阅读说明：本技术 过滤结构主体和用于从原始流体流中分离杂质的过滤模块 (Filter structure body and filter module for separating impurities from a raw fluid flow ) 是由 奥利弗·赛博特 于 2019-08-09 设计创作，主要内容包括：本发明涉及一种用于从包含杂质的原始气流中分离杂质的过滤模块(100),该过滤模块包括至少一个三维的过滤结构主体(10),原始气流可被引导穿过该过滤结构主体,以及外部框架(110),其用于将过滤结构主体(10)容纳在原料侧开口(112)与提纯侧开口(114)之间。三维的过滤结构主体(10)包括至少一个支撑结构(40)和布置在其上的过滤层(12)。支撑结构(40)包括至少一个梳状设计的区段(42),其具有基座(44),在基座(44)的纵向方向(45)上彼此相隔的尖齿(46、47)远离基座地共同立在一个方向(90)上。过滤层(12)的放置方向在基座(44)的纵向方向(45)上延伸。本发明还涉及一种过滤结构主体(10)、一种套件以及一种用于制造过滤结构主体(10)的方法。(The invention relates to a filter module (100) for separating impurities from a raw gas flow containing impurities, comprising at least one three-dimensional filter structure body (10) through which the raw gas flow can be guided, and an outer frame (110) for receiving the filter structure body (10) between a feed-side opening (112) and a purification-side opening (114). The three-dimensional filter structure body (10) comprises at least one support structure (40) and a filter layer (12) arranged thereon. The support structure (40) comprises at least one comb-shaped section (42) having a base (44), the tines (46, 47) spaced apart from one another in the longitudinal direction (45) of the base (44) jointly standing in one direction (90) away from the base. The placement direction of the filter layer (12) extends in the longitudinal direction (45) of the base (44). The invention also relates to a filter construction body (10), a kit and a method for producing a filter construction body (10).)

1. A filtration module (100) for separating impurities from a raw gas stream containing impurities, the filtration module comprising:

at least one three-dimensional filter construction body (10) through which the primary air flow can be guided, and

an outer frame (110) for accommodating the filter structure body (10) between a raw side opening (112) and a purification side opening (114),

wherein the at least one three-dimensional filter structure body (10) comprises a support structure (40) and a filter layer (12) arranged thereon, which has an inflow side (18) and an outflow side (22),

wherein the support structure (40) comprises at least one comb-designed section (42) having a base (44), the tines (46, 47) spaced apart from one another in the longitudinal direction (45) of the base (44) jointly standing in one direction (90) away from the base,

wherein the placement direction of the filter layer (12) extends in the longitudinal direction (45) of the base (44), and

wherein an inflow region (20) of the inflow surface (18) is arranged on one side of the filter layer (12) and an outflow region (24) of the outflow surface (22) is arranged on the opposite side of the filter layer (12), which extend along the tines (46, 47), respectively, between the base (44) of the tines and the end (48) of the tines (46, 47) remote from the base.

2. A filter module according to claim 1, wherein the filter layer (12) is secured in the support structure (40) by at least one securing structure (70) comprising at least one securing element (72).

3. A filter module as claimed in claim 1 or 2, characterized in that the base (44) is designed in one piece.

4. A filtration module according to any preceding claim, wherein the tines (46, 47) taper from the base (44).

5. A filtration module according to any one of the preceding claims, wherein the filtration layer (12) comprises one or more filtration mats (12, 14).

6. The filtration module according to one of the preceding claims, wherein the filter construction body (10) is fixed without a connecting medium within the outer frame (110), in particular wherein the filter construction body (10) is fixed with a form fit within the outer frame (110).

7. A filter module according to any one of the preceding claims, wherein along the base (44) of at least one section (42) of the support structure (40) the filter layer (12) is designed wave-like, in particular wherein at the beginning and at the end of the filter layer (12) projections (34) are foreseen beyond the support structure (40).

8. The filtration module according to one of the preceding claims, wherein a coarse separator (200) is arranged in the frame (110), followed by a fine filtration stage (250), in particular wherein the coarse separator (200) serves for the inertial separation of components contained in a fluid flowing past, in particular paint particles and/or paint agglomerates, in particular wherein the coarse separator (200) has at least one acceleration section (212) for the fluid on the input side, in which the fluid is accelerated in the throughflow direction (91), and downstream of which acceleration section (212) a first impact surface (223) for components contained in the fluid is connected.

9. A filtration module according to any one of the preceding claims, wherein the expansion section of the acceleration section (212) between the bottom part (216) and the top cover part (218) of the coarse separator (200) is transverse, in particular perpendicular, to the wave orientation of the filter layer (12) of the fine filter stage (250).

10. A filtering structural body (10) suitable for a filtering module (100) for separating impurities from an original gas flow containing impurities, in particular according to any one of the preceding claims, comprising:

a support structure (40) and a filter layer (12) arranged thereon, the filter layer having an inflow side (18) and an outflow side (22),

wherein the support structure (40) comprises at least one comb-designed section (42) having a base (44), spaced-apart tines (46, 47) jointly standing in one direction (90) away from the base,

wherein the placement direction of the filter layer (12) extends in the longitudinal direction (45) of the base (44), and

wherein an inflow region (20) of the inflow surface (18) is arranged on one side of the filter layer (12) and an outflow region (24) of the outflow surface (22) is arranged on the opposite side of the filter layer (12), which extend along the tines (46, 47), respectively, between a base (44) and an end (48) of the tines (46, 47) remote from the base.

11. The filter construction body according to claim 10, characterised in that the filter layer (12) is fixed in the support structure (40) by at least one fixing structure (70) comprising at least one fixing element (72).

12. The filter construction body according to claim 10 or 11, characterized in that the base (44) is designed to be coherent.

13. The filter construction body according to any of claims 10-12, wherein the tines (46, 47) taper from the base (44).

14. The filter construction body according to any one of claims 10 to 13, characterized in that the support structure (40) contacts the filter layer (12) substantially linearly with respect to an expansion section of the filter layer (12) in flow cross section.

15. The filter construction body according to any one of claims 10 to 14, characterised in that the filter layer (12) projects on its ends out of the support structure (40) along the base (44) and/or on its sides transversely to the base (44).

16. A kit for manufacturing a filter construction body (10) suitable for a filter module (100) for separating impurities from an original gas flow containing impurities, in particular according to any one of claims 1 to 9, wherein the filter construction body (10) has a support structure (40),

wherein

The support structure (40) can be composed of components (42, 50, 52, 54) which can be derived from pre-pressed and/or pre-stamped blanks, in particular pre-pressed and/or pre-stamped blanks of cardboard and/or corrugated cardboard and/or fiber profiles and/or deep-drawn parts made of plastic.

17. A kit according to claim 16, characterized in that the components (72, 74) for one or more fixation structures (70) are included in the blank.

18. A method for manufacturing a filter construction body (10), in particular according to any one of claims 10 to 15, comprising a support structure (40) and being suitable for a filter module (100) for separating impurities from an original gas flow containing impurities, in particular according to any one of claims 1 to 9, the method comprising:

a support structure (40) is formed by inserting (S100) the comb-shaped section (42) and the connecting element (50);

a fixing structure (70) is formed by inserting (S102) a fixing element (72) and a connecting element (74);

-placing (S104) a filter layer (12) with its support surface along the base (44) and the tines (46, 47) of the support structure (40);

fixing (S106) the filter layer (12) on the support structure (40) by inserting at least one fixing structure (70) into the interspaces of the inserted filter layer (12).

19. Method according to claim 18, wherein the plugging (S100) of the support structure (40) is carried out in a mounting device (300) comprising a first receptacle (302) for the insertion of a connection element (50) and a second receptacle (304) elongated perpendicularly thereto for the insertion of a comb structure (42).

20. The method according to claim 18 or 19, wherein in the assembly device (300) the filter layer (12) is placed (S104) and fixed (S106) in the support structure (40).

21. Method for manufacturing a filter module (100) for separating impurities from a raw gas flow containing impurities, in particular according to any of claims 1 to 9, with a filter construction body (10) comprising a support structure (40), in particular according to any of claims 10 to 15, wherein the filter construction body (40) is introduced into a frame (110) in a frame fitting device (310), wherein the frame (110) is pushed onto a shelf (316) in the frame fitting device (310), and the introduction (S110) of the filter construction body (40) up to the shelf (316) into the frame (110) is effected.

Technical Field

The invention relates to a filter structure body for a filter module for separating impurities from a raw fluid flow containing impurities, in particular for use in a painting installation for painting workpieces, in particular vehicle bodies, to a filter module comprising a filter structure body and to a method for producing a filter structure body.

Background

DE 102011050915 a1 discloses a core filter module comprising an outer frame and a three-dimensional core filter arranged therein, wherein spacers are arranged between individual sections of the three-dimensional core filter. The use of a paper core filter enlarges the effective area of the filter module or paint mist separation module.

Furthermore, a paper core filtration module is disclosed, comprising an outer frame and a three-dimensionally arranged paper core filter in the form of a multiply folded web. In this case, the core filter is fixed to the frame in the region of the inflection points of the multiply folded web (i.e. in the so-called bow). In this embodiment, too, by using a core filter, an enlargement of the effective area of the filter module is achieved.

In order to ensure the distance between the sides of the multiply folded core filter web facing each other, no spacers are required, rather, this distance is achieved by fixing the core filter web to the frame at regular distances by suitable fixing means within the range of the bow produced upon folding.

Disclosure of Invention

One object of the invention is to provide a filter module which is simpler to produce and can be transported in a space-saving manner.

Another object is to provide a filter construction body for such a filter module.

Another object is to provide a method for manufacturing a filter construction body for such a filter module.

These objects are achieved by the features of the independent claims. Advantageous embodiments and advantages of the invention emerge from the further claims, the description and the figures.

According to one aspect of the invention, a filter module for separating impurities from a raw fluid flow containing impurities is proposed, which comprises at least one three-dimensional filter construction body through which the raw fluid flow can be guided, and an outer frame for accommodating the filter construction body between a raw gas side opening and a clean gas side opening. The three-dimensional filter structure body comprises a support structure and a filter layer arranged thereon, which filter layer has an inflow side and an outflow side. The support structure comprises at least one section of comb-like design having a base, the tines spaced apart from each other in the longitudinal direction of the base jointly standing in one direction away from the base. The placement direction of the filter layer extends in the longitudinal direction of the base.

On one side of the filter layer, an inflow region of the inflow surface is arranged, while on the opposite side of the filter layer, an outflow region of the outflow surface is arranged. An inflow region or outflow region extends along the outer edges of the tines between the base and the ends of the tines remote from the base, respectively.

The support structure is preferably arranged on only one side of the filter layer. For example, the support structure may be arranged on the inflow side of the filter layer. By the comb-like design of the particularly flat section of the support structure, it is possible to avoid covering the partial filter and thus reducing the flow-in and flow-out surfaces that can flow through.

Advantageously, such a filter module can be used in the industrial coating sector and/or in automotive body coatings.

The support structure may advantageously be constructed as a type of dimensionally stable stent. For this purpose, a plurality of comb segments can be arranged superimposed, parallel to one another and connected to connecting elements arranged orthogonally thereto. The support makes it possible to form a three-dimensional negative contour in the form of a wave, which is predetermined by the filter layer, by means of a punctiform or linear support surface, into which the filter layer can be easily inserted. Thereby, the stability of the filter structure body is improved. Even in the case of a high loading of the filter module, bending of the filter layer and the resulting leakage in the filter module can be avoided.

Advantageously, due to the comb-like structure of the segments, the filter layer can be designed wave-like along the segments. Preferably, the segments may be preset at equal intervals.

Advantageously, the comb-shaped section of the support structure may be configured by perforations in the face, so that it is possible for separated coating to run off downwards inside the filter when the holding device is oriented with the waves vertical. When the retaining device is oriented with the waves horizontal, it is possible for air to flow horizontally in the wave gap.

By means of the stable support structure, a reduction of the receiving capacity of the filter module can be prevented. It is possible to avoid bulging of the filter layer on the primary gas side and a resulting reduction in the inflow gas. The reduction in the inflow gas may lead to undesirable early clogging of the filter layer by, for example, paint particles.

For the three-dimensional filter structure body of the filter module, any filter layer can be held and fixed in a wave-like manner. The filter layer is placed into a three-dimensionally shaped support structure. The filter layer can be fixed to the support structure by means of a fixing structure, for example by means of a clamping wedge. Whether vertical or horizontal wave orientation, it is possible to apply the filtering structure body in use. Likewise, angular positions therein are also possible.

In order to accommodate the filter construction body, a cuboid frame is advantageous, which has an inflow opening on the raw gas side and an outflow opening on the clean gas side on the opposite side. The frame may advantageously be formed from corrugated cardboard.

Advantageously, the filter layer may be placed only on the support structure. The filter layer may be connected to the support structure, for example by clamping forces.

Advantageously, the filter layer may be arranged between the support structure and the fixation structure, in particular sandwiched therebetween.

The fastening element in the form of a clamping wedge can be rounded on its narrow side in order to make easy insertion into the wave gap possible and to minimize the risk of damage to the filter layer. For filter layers of different thickness, fixing elements with different widths can be used to ensure a firm clamping of the filter layer.

The clamping wedge of the fastening structure can likewise be designed in the form of a bracket and dimensioned such that, after the filter layer has been inserted, it can be pushed into the free trough and press the filter layer in a punctiform or linear manner onto the support structure. The clamping wedges can be superimposed, arranged parallel and connected by connecting elements. The clamping wedge can be designed, for example, as a trapezoid or a triangle and preferably corresponds to the shape of the free cross section of the recess of the filter layer inserted.

The filter structure body allows a reliable seal between the filter layer or the support structure and the frame.

Preferably, the flow direction of the filter construction body is selected such that the support structure is located in front of the filter layer on the raw gas side, while the fastening structure is arranged on the clean gas side. In the described arrangement of the connection elements, this has the advantage that the connection elements are not located in the inflow openings into the wave gap, but are arranged centrally in front of the end face (wave crest). This results in a beneficial flow guidance into the wave gap and at the same time prevents premature blocking of the inflow opening due to coating adhering to the connecting element. In addition, the connecting element provides an impact surface for the coating material in front of the filter layer, thereby additionally increasing the durability.

In the primary gas side arrangement of the support structure, it may be advantageous to form the connecting element elongated in front of the waves of the filter layer, so that it acts as a guiding element to promote improved flow guidance into the wave voids. In particular, it can be advantageous if the connecting element, which acts as a guide element, completely covers the wave crest, viewed in the inflow direction, and reduces the free inflow cross section into the wave gap, so that an increased acceleration of the inflowing fluid flow (in particular the air flow) is produced.

By this acceleration, the air including the contained paint particles enters deeper into the wave gap, so that it loads the paint from the rear forward against the flow direction, whereby the receiving capacity of the filter module rises.

The support structure may advantageously be composed of a plurality of comb-shaped sections arranged parallel to each other. Advantageously, the support structure may be formed by elements that are plugged together. This facilitates the assembly of the filter module and the filter construction body.

The filter layer may be formed, for example, from a slotted paper web. In addition to paper, polyester nonwoven or glass fiber materials may also be used. Alternatively, other filter nonwovens, filter cloths, filter papers, and mats made of other fibrous materials, such as coconut shell fibers, are also possible.

The filter layer can be designed as a single layer. Alternatively, the filter layer can be designed as a multilayer. For example, a finer layer, such as a nonwoven mat made of polyester, for example, can be laid on a coarser layer, such as made of grooved paper. A coarser layer may have a high storage capacity, while a finer layer may have a smaller storage volume than it.

Advantageously, the filter layer may be designed as a flexible mat. Thereupon, the filter layer can be stored, for example in the form of a roll. If the filter layer is designed as a multilayer, different layers of the filter layer can optionally be introduced into the support structure one after the other. It is not necessary to connect the layers of the filter layer to each other before being installed in the support structure. This simplifies assembly of the filter module and saves costs.

Alternatively, different layers of the filter layer may be loosely stacked on top of each other and placed and fixed in the support structure.

Alternatively, the layers can be connected before introduction into the support structure, which eliminates the orientation of the individual layers.

If the filter layer is placed onto at least one comb-shaped section of the support structure, the filter layer may, for example, be elongated undulatedly along the base of the support structure. The wavy end may be disposed on the base and the next wavy end may be disposed on the end of the tine distal from the base.

A plurality of filter construction bodies may be arranged in a common frame in sequence or side by side.

Advantageously, a plurality of filter construction bodies can also be inserted in succession into the respective frame. By using different filter layers, the coarse and fine separations can be separated from one another in this way.

This allows the loaded filter stages to be replaced independently of each other. In addition to this, by using various coarse filter layers and various fine filter layers, a multiplicity of combination possibilities are obtained which allow the filter combination to be adapted to various paints and coating processes as required.

According to an advantageous embodiment of the filter module, the filter layer can be fixed in the support structure by a fixing structure comprising at least one fixing element. Advantageously, the fixing element can be incorporated on the side of the filter layer opposite the support structure. If the filter layer is designed in a wave-like manner along the base, the fixing element can be a component of a fixing structure comprising a plurality of fixing elements. As fixing element, a clamping wedge with an at least approximately trapezoidal or triangular shape is advantageous.

Advantageously, the support structure and the fastening structure cooperate, wherein the fastening structure projects into the free space of the support structure and the fastening structure projects into the free space of the support structure, wherein the filter layer is arranged between the support structure and the fastening structure. Thereby enabling the filter layer to be stably secured to the support structure.

Advantageously, the elements of the support structure and/or the fixing structure may be implemented as flat pieces.

According to an advantageous embodiment of the filter module, the base can be designed in one piece. The base may be designed as a kind of slat. Alternatively, the base may consist of a single base section, which is held together by the connecting element and/or the filter layer.

According to an advantageous design of the filter module, the tines can taper from the base. Thereby, the filter layer can be introduced into the interstices of adjacent tines with greater ease.

In addition, the distance between the peaks on the raw gas side can thus be wider than the distance on the clean gas side of the filter module. This increases the durability, since the "inflow gas" gradually incorporates the coating on the raw gas side.

According to an advantageous embodiment of the filter module, the filter layer can comprise a filter mat, which can in particular be a flexible filter mat. Advantageously, the filter layer may have sufficient inherent stability such that it is soft enough to enable the filter layer to be inserted into the interstices of the tines without problems, however, when it is inserted into the support structure, the inflow region of the inflow face is stably tensioned.

According to an advantageous embodiment of the filter module, the filter structure body can be fixed in the outer frame without a connecting medium. In particular, the filter construction body can be fixed in the outer frame substantially in a form-fitting manner.

According to an advantageous embodiment of the filter module, the filter layer can be corrugated along the base of at least one section of the support structure. This allows to advantageously configure the filtering structure body when the support structure co-acts with the fixing structure. Alternatively, the projections beyond the support structure may be preset at the open end and at the end of the filter layer. The protrusion may advantageously be used to seal the filter construction body with respect to the frame. Alternatively, projections of the longitudinal sides of the filter layer protruding from the support structure can be provided. This improves the tightness of the filter construction body with respect to the surrounding frame.

According to one advantageous embodiment, a coarse separator and then a fine filter stage can be arranged in the frame. The fine filter stage is formed by the filter construction body according to the invention. The coarse separator can be provided in particular for the inertial separation of components contained in the fluid flowing through, in particular coating material particles and/or coating material aggregates. In particular, the coarse separator can have at least one acceleration section for the fluid on the input side, in which the fluid is accelerated in the throughflow direction, and downstream of the acceleration section a first impact surface for the components contained in the fluid is connected.

According to an advantageous embodiment, the expansion section of the acceleration section between the bottom part and the top cover part of the coarse separator can be oriented transversely (in particular perpendicularly) to the waves of the filter layer of the fine filter stage. This orientation of the waves makes possible a horizontal flow in the wave voids of the filter layer. If the coarse separator is tilted, for example, about the x-axis, then advantageously a relative orientation of the waves of the filter layers of the fine filter stage transverse to the expansion section of the acceleration section is obtained.

According to another aspect of the invention, a filter construction body for a filter module according to the invention for separating impurities from a raw fluid flow containing impurities is proposed. The filter structure body includes a support structure and a filter layer disposed thereon, the filter layer having an inflow face and an outflow face. The support structure comprises at least one section of comb-like design having a base, the tines spaced apart from each other in the longitudinal direction of the base jointly standing in a direction away from the base, wherein the placement direction of the filter layer extends in the longitudinal direction of the base.

An inflow region of the inflow surface is arranged on one side of the filter layer and an outflow region of the outflow surface is arranged on the opposite side of the filter layer, which respectively extend along the tines between the base and the ends of the tines remote from the base.

The filter structure body can be used, for example, as a fine filter stage, which comprises, for example, a fine filter mat made of a polyester nonwoven or a glass fiber material as a filter layer. The fine filter stage can be used as a fine filter, for example downstream of a coarse separator operating on the inertial principle.

Alternatively, the filter structure body can be used, for example, as a combined separator, wherein a multi-layer filter layer can be used, for example with a coarse filter mat as a pre-separation mat before a fine filter mat, for the pre-separation. As a pre-separation mat, the use of a multi-layer filter mat made of a slotted paper web can be considered in particular. The advantage is that a high storage capacity can be combined with a good fine separation, in particular with a high separation efficiency.

Alternatively, similar advantages can also be achieved by using (only) one filter layer made of a fine filter mat, which itself has a three-dimensionally shaped surface on the inflow side in order to increase the storage volume. In this way, a larger surface is available for depositing the separated coating, so that the filter layer is not clogged this quickly. This variant can offer further advantages, such as lower material costs, lower assembly expenditure for the filter module (since only one filter layer has to be inserted), increased separation efficiency and storage capacity in the case of certain applications, in particular when the coating particles are relatively dry.

It is also possible to form the filter layer by a plurality of layers, at least the layer on the raw gas side being so three-dimensionally structured.

The support structure can be connected to the coarse separator structure or be an integral part of the coarse separator structure, when the filter structure body is applied in a common frame after the coarse separator.

An advantageous coarse separator can comprise at least one separation section which, on the input side of the coarse separator, comprises at least one acceleration section for the fluid, in which the fluid is accelerated in the throughflow direction, and in which a first impact surface for a component contained in the fluid is connected downstream of the acceleration section.

The first impact surface may comprise an impact zone and a curved section following immediately in the flow direction for turning the direction of the fluid by at least 45 °, preferably by at least 180 °, relative to the flow direction of the fluid through the acceleration section.

In particular, the first impact surface may be designed to be through-going along the curved section.

Advantageously, a flow-technically optimized geometry for inertial separation, in particular a flow path of the advantageous labyrinth type through which the fluid flows, can be realized in the separation stage. As large a free-flow cross-section as possible can be provided along the impingement surface to be considered for the adhesion of the main coating thereon. Although there is a conflict between high separation efficiency and low pressure loss with the aim of being limited in itself by the principle, as high a separation efficiency as possible can be achieved with as low a pressure loss as possible by means of a flow-technically optimized separation structure. Preferably, transversely to the output end of the acceleration section, an impact surface is arranged which comprises the impact section.

Likewise, optionally, a high storage capacity for the separated coating material can be achieved by suitable and adapted shaping and arrangement of the acceleration section and the impact surface. This is synonymous with the throughflow resistance of the separation stage, which rises only slightly due to the increased paint loading.

In particular, the separation stages may be assigned an x-axis, a y-axis and a z-axis, respectively, which are perpendicular to each other.

The main flow direction of the fluid in the acceleration portion can be understood as an imaginary straight-line connection between the input side and the output side of the acceleration portion, wherein the fluid enters the acceleration portion on the input side and exits again on the output side opposite the input side, irrespective of whether one or more direction diversions are implemented inside the acceleration portion.

The x-axis corresponds to the main flow direction.

The free flow cross section at the entrance of the fluid entry acceleration section is arranged along the y-axis between the inflow faces of the separation stages.

For example, the x-axis may correspond to the longitudinal axis of the acceleration section, the z-axis corresponds to the vertical axis, and the y-axis corresponds to the horizontal axis.

Advantageously, the accelerator section is designed as a nozzle which has a large free-flow cross section at the entry of the fluid into the accelerator section, which free-flow cross section tapers in the throughflow direction. The free flow cross-section at the entrance of the fluid into the acceleration section is parallel to the y-axis and z-axis.

According to an advantageous embodiment of the filter structure body, the filter layer can be fixed in the support structure by a fixing structure comprising at least one fixing element. Advantageously, the fixing element can be incorporated on the side of the filter layer opposite the support structure. If the filter layer is designed in a wave-like manner along the base, the fixing element can be a component of a fixing structure comprising a plurality of fixing elements.

Advantageously, the support structure and the fastening structure cooperate, wherein the fastening structure projects into the free space of the support structure and the fastening structure projects into the free space of the support structure, wherein the filter layer is arranged between the support structure and the fastening structure. Thereby enabling the filter layer to be stably secured to the support structure.

Advantageously, the elements of the support structure and/or the fixing structure may be implemented as flat pieces.

According to an advantageous embodiment of the filter structure body, the base can be designed in one piece. The base may be designed as a kind of slat. Alternatively, the base may consist of a single base section, which is held together by the connecting element and/or the filter layer.

According to an advantageous embodiment of the filter construction body, the tines can taper from the base. Thereby, the filter layer can be introduced into the interstices of adjacent tines with greater ease.

According to an advantageous embodiment of the filter structure body, the support structure can contact the filter layer substantially linearly in comparison to the extension of the filter layer in the flow cross section. The cross-section of the filter layer that can flow through remains virtually unaffected by the support structure. Alternatively, the fixing structure may be implemented such that the fixing structure contacts the filter layer substantially linearly with respect to an expansion section of the filter layer in the flow cross section. The cross-section of the filter layer that can flow through remains virtually unaffected by the fixing structure.

According to an advantageous embodiment of the filter structure body, projections beyond the support structure can be provided at the ends and ends of the filter layer. The protrusion may advantageously be used to seal the filter construction body with respect to the frame. Alternatively, projections of the longitudinal sides of the filter layer protruding from the support structure can be provided. This improves the tightness of the filter construction body with respect to the surrounding frame.

According to another aspect of the invention, a kit for manufacturing a filter construction body according to the invention is proposed, which is suitable for a filter module according to the invention for separating impurities from a raw fluid flow containing impurities. The filter construction body comprises a support structure, wherein the support structure can consist of parts which can be obtained from pre-pressed and/or pre-stamped blanks, in particular pre-pressed and/or pre-stamped blanks of cardboard and/or corrugated cardboard and/or fiber shaped parts and/or deep-stamped parts made of plastic.

Advantageously, the filter construction body can be constructed with a small number of operations. The filter construction body can be transported in the form of a blank, space-saving and cost-effective, and can only be constructed on site. The filter layer can also be transported in the form of a mat, saving space and costs.

Worldwide, it is possible to produce the components for the supporting structure and the fastening structure in the form of stampings, in particular corrugated cardboard stampings, cost-effectively. These components require minimal raw material usage compared to other filter configurations. The assembly of the support structure and the fixing structure and the insertion of the filter layer are simple and advantageously possible directly at the point of use.

The filter construction body can be used for any filtration process.

Due to the material properties, the implementation of a support structure, in particular made of corrugated cardboard, is suitable above all for separating solid or sticky particles from an air flow.

The use for separating a coating mist from a coating process, in particular a wet coating, is advantageous. The fields of use can be various coating processes, from small manual coating stands in the general industry to fully automatic equipment for large-scale coating in the automotive field. In particular, use in a separate system can be envisaged in which the filter module is connected to the painting booth in a movable trolley, so that filter replacement during a continuous painting operation is possible.

The assembly of the components is intuitive and can be done quickly. The assembly is simplified in particular by the dimensionally stable support structure simultaneously serving as a construction aid.

According to one advantageous embodiment, for assembly, a mounting device for the construction of the filter structure body can be used, and for the introduction of the filter structure body into the frame, a frame mounting device can be used. Parts of the support structure may be incorporated into the assembly device to hold it in place.

By means of the frame assembly device, the filter construction body can be positioned in the frame exactly matched.

The components for the filter construction body have a very low transport volume, since they are flat stampings which can be stacked in a space-saving manner. The filter layers to be inserted into the support structure can be supplied separately, for example as a roll, likewise in a space-saving manner. The required storage surface is correspondingly small.

According to an advantageous embodiment of the kit, a component for fixing one or more fixing elements of the structure can be included in the blank. It can be pre-stamped or pre-pressed and separated from the blank in order to build up the filter construction body.

The kit for producing a holding device consisting of a support structure and a fixing structure may preferably comprise a plurality of only three different corrugated cardboard components (planar blanks), namely a comb-shaped section of the support structure, a substantially trapezoidal planar element as a clamping wedge of the fixing structure, and a connecting element, wherein the connecting elements for the support structure and the fixing structure may be identical.

Alternatively, a kit for producing a filter module according to the invention can be provided, which comprises a filter construction body according to the invention, which is suitable for a filter module according to the invention for separating impurities from a raw gas flow containing impurities. The filter construction body comprises a support structure, wherein the support structure can consist of parts which can be obtained from pre-pressed and/or pre-stamped blanks, in particular pre-pressed and/or pre-stamped blanks of cardboard and/or corrugated cardboard and/or fiber shaped parts and/or deep-stamped parts made of plastic. Likewise, the frame can be derived from a pre-stamped blank, in particular a pre-stamped and/or pre-stamped blank of cardboard and/or corrugated cardboard and/or a fiber shaped part and/or a deep-drawn part made of plastic.

According to another aspect of the invention, a method is proposed for manufacturing a filter construction body according to the invention, which comprises a support structure, which is intended for a filter module according to the invention for separating impurities from a raw gas flow containing impurities.

The method comprises the following steps: the comb-shaped sections and the connecting elements are inserted to form a supporting structure; the fixing structure is formed by inserting the fixing element and the connecting element; placing the filter layer with its support surface along the base and tines of the support structure; the filter layer is fixed to the support structure by inserting at least one fixing structure into the interstices of the inserted filter layer.

Advantageously, the insertion of the support structure is carried out in a mounting device comprising a first receptacle for the insertion of the connecting element and a second receptacle, which is elongated perpendicularly thereto, for the insertion of the comb structure.

The mounting device can also be used for plugging in of fixed structures.

Advantageously, the placing and fixing of the filter layer in the support structure can be achieved in the assembly device.

In the frame assembly device, the filter construction body can be introduced into the frame, wherein the frame is pushed onto the shelf in the frame assembly device and the introduction of the filter construction body up to the shelf into the frame is effected. Thereby, the filter construction body is located in the correct position within the frame so that it can be closed.

It will be appreciated that in this way also a combination of coarse separator and fine filter stage can be introduced into the frame with an exact match.

Drawings

Other advantages result from the following description of the figures. Embodiments of the invention are shown in the drawings. The figures, description and claims contain a large number of combined features. It will be appreciated by those skilled in the art that features may be viewed individually and combined into other useful combinations as appropriate.

The figures show by way of example:

fig. 1 shows a top view of the inlet side opening of a filter module according to an embodiment of the invention;

fig. 2 shows a support structure according to an embodiment of the invention, which is formed by a plurality of comb-shaped segments arranged parallel to one another being plugged together;

fig. 3 shows a comb-shaped section of the support structure according to fig. 2, comprising a wave-like base;

fig. 4 shows a connecting element for connecting comb-shaped sections of the support structure according to fig. 2;

FIG. 5 illustrates an alternative comb-shaped section of a support structure according to an embodiment of the invention, including a rectilinear base;

FIG. 6 shows a filter construction body according to an embodiment of the invention, comprising a filter layer which is placed into a support structure and clamped therein by means of fixing elements;

FIG. 7 shows a fixing element made of a plurality of parts, including a plurality of conical elements and connecting elements, which are plugged together;

fig. 8 shows a conical element of the fixing element according to fig. 7;

fig. 9 shows a connecting element of the fixing element according to fig. 7;

FIG. 10 illustrates a filtration module comprising a filtration structure body and an outer frame, wherein the filtration structure body is encased in the outer frame;

fig. 11 shows an advantageous coarse separator operating on the principle of inertia;

fig. 12 shows a cross section through the coarse separator according to fig. 11;

FIG. 13 schematically shows a series connection of a coarse separator and a fine filtration stage;

FIG. 14 shows comb sections for a fine filtering stage;

FIG. 15 shows a filter layer having an undulating surface in side view;

FIG. 16 shows a filter layer having a network structure on a surface in a top view;

fig. 17 shows an assembly device for constructing a support structure and a fixing structure of a filter construction body according to the invention;

figure 18 schematically shows a support structure fitted in the fitting device according to figure 17;

FIG. 19 illustrates in side view an assembly apparatus for loading a filter construction body into a frame configured to encase a paperboard;

fig. 20 shows a perspective view of the mounting device for mounting the filter construction body according to fig. 19;

fig. 21 shows the fitting device according to fig. 19 in a side view, with a built-in covering cardboard;

FIG. 22 illustrates a flow chart of one advantageous method for constructing a filter module.

Detailed Description

In the drawings, the same reference numerals are used to designate the same or functionally equivalent elements. The drawings illustrate only embodiments and are not to be construed as limiting.

Directional terms used hereinafter with concepts such as "left", "right", "upper", "lower", "front", "rear", etc., are used only for better understanding of the drawings, and do not show a limitation of generality in any way. The components and elements shown, as well as their design and use, may be varied under the trade-offs of those skilled in the art and may be adapted to the respective application.

Fig. 1 shows a top view of the inlet side opening 112 of a filter module 100 according to an embodiment of the invention. The raw gas flows into the filter module 100 through the inlet side opening 112. The inlet side opening 112 thus forms the raw gas side opening 112.

The filtration module 100 is used to separate impurities from a raw gas stream containing the impurities. The filter module 100 comprises a three-dimensional filter construction body 10 through which the original air flow can be guided; and an outer frame 110 for accommodating the filter construction body 10 between the raw gas side opening 112 and a clean gas side opening which, in this design, is, for example, opposite the clean gas side opening 112 and is not visible. The main throughflow direction is directed from the raw gas side opening 112 to the clean gas side opening.

In the top view shown, the filter layer 12 is arranged in a wave-like manner, having three wave crests at the primary gas side opening 112 of the filter module 100 and three wave troughs at the opposite end of the filter module 100.

The three-dimensional filter structure body 10 comprises a support structure 40 and a filter layer 12 arranged thereon, which has an inflow surface 18 and an outflow surface 22 (see fig. 6) opposite thereto, wherein the fluid on the raw gas side enters the filter layer 12 via the inflow surface, and the filtered fluid exits the filter layer 12 via the outflow surface.

The support structure 40 comprises at least one (in this embodiment four) comb-designed section 42. Hereinafter, the support structure 40 is described in detail.

It has been shown that adjusting the ratio of the inflow surface 18 to the raw gas-side flow cross section can advantageously influence the filter durability. The raw gas side opening 112 in front of the filter construction body 10 represents the raw gas side flow cross section. The adjustment of the ratio of the inflow surface 18 to the raw gas-side flow cross section can advantageously be effected as a function of the nature of the impurities and/or particles to be filtered and thus, for example, as a function of the type of coating material atomized when used in the coating installation and/or the coating used and/or the prevailing air conditions.

It is therefore advantageous in the filter module 100 according to the invention to be able to adapt this ratio to the properties of the particles to be separated as simply as possible. It is also advantageous that the configuration, type and number of filter layers 12 used can be adapted as simply as possible to the properties of the particles to be separated.

Fig. 2 shows a support structure 40 according to an embodiment of the invention, which is formed by a plurality of comb segments 42 arranged parallel to one another being plugged together. Fig. 3 shows a single comb-shaped section 42 of support structure 40, while fig. 4 shows a single connecting element 50 of support structure 40. Fig. 5 shows a variant of the comb section 42.

The comb section 42 is flat and has a thickness that is significantly smaller than its length or width. By a small thickness, an extremely narrow (line-like) contact surface with the filter layer 12 (fig. 1) is advantageously obtained.

The support structure 40 is three-dimensional and comprises a plurality of comb segments 42, which are arranged in a superimposed manner parallel to one another and are connected on their front and rear sides to the connecting elements 50. The support structure 40 forms a type of three-dimensional support for the filter layer 12 (fig. 1).

The connecting element 50 is inserted into a slot 52 on the outer edge of the base 44 and into a slot 52 on the end of the tines 46, 47 remote from the base. As can be seen in fig. 4, the connecting element 50 likewise has a slot 56 for this purpose.

Each comb section 42 has a coherent base 44 along a longitudinal extension 45, with spaced tines 46, 47 co-standing away from the base in a direction 90. The direction 90 may, for example, correspond to the main flow direction of the filter module 100 (fig. 1).

As the distance from the base 44 increases, the inner tines 46 and outer tines 47 taper in their width such that the spacing between the tines 46, 47 on the base is narrower than the spacing between the tines 46, 47 at the end 48 remote from the base.

Along its longitudinal extension in direction 90, the inner tines 46 have perforations not labeled in detail. If the support structure 40 is arranged on the raw gas side of the filter module 100 (fig. 1), the perforations allow impurities (e.g., paint particles) separated from the fluid to flow out under the force of gravity when the waves of the filter layer 12 (fig. 1) are oriented vertically in the operating state. In this example, the outer tines 47 do not have any such perforations. Alternatively, however, perforations can also be provided here.

Alternatively, it can be provided that the outer tines 47 have outer edges that are parallel to each other.

The perforations allow for horizontal flow of fluid in the wave gap if the waves are oriented horizontally in the operating state.

If the filter layer 12 (FIG. 1) is placed into the support structure 40, it extends wavelike along the longitudinal direction 45 of the base 44. The filter layer 12 (FIG. 1) is disposed in a longitudinal direction 45 of the bed 44.

Fig. 3 shows a variant of the comb segment, in which the outer edge of the base 44 is designed in a wave-like manner. If in the operating state the waves of the filter construction body 10 are oriented vertically, the separated coating material is allowed to flow out downwards inside the filter.

Fig. 5 shows a variant of the section 42, in which the straight outer edge of the seat 44 is included.

Preferably, the connecting element 50 of the support structure 40 is arranged centrally in front of each wave crest and in each wave trough, respectively, so that here the line runs parallel to the wave-directing support filter layer 12 (fig. 1).

Additionally, the connecting elements 50 can be preset on both sides of the outer tines 47 parallel to the elongation of the waves, which makes it possible to clamp the filter layer 12 linearly with respect to the corresponding inner side of the frame 110. This clamping facilitates securing the filter layer 12 (FIG. 1) and facilitates sealing between the filter layer 12 and the frame 100.

Fig. 6 shows a perspective view of a filter construction body 10 according to an embodiment of the invention, comprising a filter layer 12 which is inserted into a support structure 40 and clamped therein by means of three fixing structures 70. Fig. 7, 8 and 9 illustrate details of the fastening structure 70, wherein fig. 7 shows the fastening structure 70 from a plurality of components which are plugged together, fig. 8 shows the wedge-shaped fastening elements 72 of the fastening structure 70, and fig. 9 shows the connecting elements 74 of the fastening structure 70 according to fig. 7.

Each of the securing structures 70 in fig. 6 has four securing elements 72 and is preferably constructed in a bracket-like manner similar to the bracket-like support structure 40 (fig. 2). In fig. 6, only the front fixing element 72 is designated by a reference numeral. The fastening arrangement 70 has fastening elements 72 in the form of clamping wedges arranged in superimposed parallel to one another, which are connected to one another at respective free ends of the fastening elements 72 by means of connecting elements 74. The connecting element 74 preferably has equidistant grooves 78 that are inserted into the grooves 76 of the connecting element 74.

As can be seen particularly easily in fig. 6, the fixing elements 72 are preferably designed as wedges, for example as triangular or trapezoidal flat elements, the shape of which corresponds to the free cross-sectional area of the interspace of the filter layer 12 in which they are placed, including the orthogonally arranged connecting elements 50.

The filter layer 12 is sandwiched between the support structure 40 and the fixing structure 70 and elongates wavelike along the longitudinal extension 45 of the base 44 of the support structure 40, wherein peaks 30 are formed at the base 44 and valleys 32 are formed at the opposite side of the filter structure body 10 through the filter layer 12 as viewed from the base 44.

The filter layer 12 may be a single layer or may be formed of a plurality of layers placed in sequence. In fig. 6 two layers are shown, namely a front layer 13 and a further layer 14, which flow through first.

In special cases, a choice of two or more layers is made depending on the process requirements, wherein the best possible compromise between separation efficiency and storage capacity can always be sought.

In particular, the process requirements are derived from the characteristics of the overspray particles to be separated, rheological characteristics such as particle size distribution, viscosity and surface tension, as well as the overspray concentration in the raw fluid (especially raw gas), and the purity requirements for the clean fluid (especially clean gas).

The use of a multi-layer filter layer 12, which is made of a slotted paper web, a polyester nonwoven or a glass fiber material, is specifically provided for overspray separation. Alternatively, other filtering nonwovens, filter cloths, filter papers, and mats made of other fibrous materials, such as coconut shell fibers, are also possible, if desired.

For the arrangement of the layers arranged one behind the other, materials with different degrees of roughness can be considered in particular. Preferably, a filter mat with a relatively low separation efficiency is used as the front layer which flows through first, which however provides a large storage volume for the separated coating material. After which a fine filter mat can be arranged, which has a higher separation efficiency but usually also provides a small storage volume.

One side of the filter layer 12 represents an inflow surface 18 and the opposite side of the filter layer 12 represents an outflow surface 22.

The inflow region 20 of the inflow surface 18 is formed along the outer edges of the tines 46, 47 from the base 44 to the ends 48 of the tines 46, 47 remote from the base. On the side of the filter layer 12 opposite thereto, the outflow regions 24 of the outflow face 22 extend correspondingly along the outer edges of the tines 46, 47, respectively, and are fixed by means of the fixing elements 72. Advantageously, the fixing element 72 rests with its outer edge on the filter layer 12, where also the outer edges of the tines 46, 47 rest against the inflow 18.

The filter layer 12 to be inserted can preferably be present in one piece. Alternatively, the filter layer 12 may also be assembled from a plurality of segments that are placed side-by-side into the support structure 40, particularly along the length of the bed 44. In this case, care is taken that the segments overlap sufficiently to ensure a coherent closure of the inflow surface 18 and/or outflow surface 22.

The overall length of the filter layer 12 is preferably determined so that the wave profile in the support structure 40 can be completely covered and a sufficient length remains at both ends so that the filter layer 12 has protrusions 34 on both sides. The projection 34 can be turned over on the outer tines 47 of the support structure 40 so that it is firmly clamped between the filter structure body 10 and the inner wall of the frame 110 when pushed into the frame 110 (fig. 1).

The width of the filter layer 12 is preferably dimensioned such that it projects beyond the support structure 40 on both sides on its longitudinal sides. When pushed into the frame 110, the projections 36 (fig. 6) can be pressed against two opposite inner sides of the frame 110, so that a seal between the filter construction body 10 and the frame 110 is achieved. The beneficial protrusion 36 is about 1cm to 10cm, preferably about 5 cm.

In this way, the filter structure body 10 can be fixed in the outer frame 110 without a connection medium. In particular, the filter structure body 10 can be fixed in the outer frame 110 in a form-fitting manner.

The filter structure body 10 may advantageously be made of a kit.

The kit may preferably comprise a plurality of only three different components, in particular corrugated cardboard components, as planar blanks, namely comb-shaped sections 42 for the support structure 40 (fig. 2, 3, 4 and 5), substantially trapezoidal planar fixing elements 72 and connecting elements 50, 74 (fig. 7, 8, 9), wherein the connecting elements for the support structure 40 and the fixing structure 70 may preferably be identical.

The kit for two preferred embodiments (examples 1 and 2) for example comprises the following components:

in example 1, a filter construction body 10 comprising a support structure 40 and a fixing structure 70 with an exemplary inflow surface of about 0.5m x 0.5m and a depth of about 0.5m (distance between inflow opening 112 and outflow opening) is provided for such a filter construction body:

four comb-shaped sections 42, twelve substantially trapezoidal fixing elements 72 for three fixing structures 70 (each comprising four clamping wedges, respectively), thirteen identical connecting elements 50, 74, i.e. seven for the support structure 40 and a set of two for three fixing structures 70, respectively.

The connecting elements 50, 74 for the support structure 40 and the fixing structure 70 are identical.

Advantageously, the filtering structure body 10 may be formed of corrugated cardboard, and is introduced into a substantially cubic-shaped wrapping cardboard as the frame 110, the edge length of which is about 0.5 m.

The filter construction body 10 is configured such that three complete wave crests 30 (fig. 6) are formed by the interposed filter layer 12, such that the available inflow surface 18, which represents the available filter area, is thus approximately 1.5m²Each 0.25m in the case of six undulating side walls²。

Advantageously, the kit is constructed from corrugated cardboard stampings, preferably 5 to 8mm thick.

In example 2, the filter construction body 10 comprises a support structure 40 and a fixing structure 70, with an exemplary inflow surface of about 0.5m x 0.5m and a depth of about 0.3m (distance between the inflow opening 112 and the outflow opening), for which a filter construction body is provided:

three comb-shaped sections 42, fifteen substantially trapezoidal fixing elements 72 for three fixing structures 70 (each fixing structure comprising five clamping wedges, respectively), thirteen identical connecting elements 50, 74, i.e. seven for the supporting structure 40 and two sets for three fixing structures 70, respectively.

The connecting elements 50, 74 for the support structure 40 and the fixing structure 70 are identical.

Advantageously, the filter construction body 10 can be formed from corrugated cardboard and introduced into a covering cardboard as a frame 110, which has a substantially square inflow surface, an edge length of about 0.5m and a depth (measured in the direction of flow) of substantially 0.3 m.

The filter construction body 10 is configured such that three complete wave crests 30 are formed by the filter layer 12 placed in such a way that the available inflow surface 18 is therefore approximately 0.9m²Each 0.15m in the case of six undulating side walls²。

Advantageously, the kit is constructed from corrugated cardboard stampings, preferably 5 to 8mm thick.

In one application case, the filter construction body 10 can be used, for example, as a coarse separator, which comprises, for example, a multi-layer filter layer made of slotted paper.

Preferably, the support body 40 and the fixing structure 70 are formed according to example 2. As a filter layer 12, a multi-layer paper web made of paper slotted to different degrees is placed into a support structure 40. The filter layer 12 preferably comprises five to ten, in particular eight, layers of slotted paper, wherein preferably two to three layers, respectively, which are directly next to one another have identical slots.

The coarse separator thus constructed is used before the fine filtration stage, which can preferably be constructed in a similar manner, but with a correspondingly finer filtration layer 12.

In another application, the filter structure body 10 can be used, for example, as a fine filter stage, which comprises, for example, a fine filter mat made of a polyester nonwoven or a glass fiber material as a filter layer. The fine filter stage can be used as a fine filter, for example downstream of a coarse separator operating on the inertial principle.

Preferably, the support body 40 and the fixing structure 70 are formed according to example 2. As the filter layer 12, a filter nonwoven fabric or a glass fiber mat is put into the support structure 40. Preferably, this is a nonwoven fabric having a honeycomb-like recess portion to enlarge the accommodation capacity.

The fine separator thus constructed, in particular as a second filtration stage, is pre-arranged downstream of the coarse separator, which can be designed as described above, wherein the filter structure body 10 has, for example, a multi-layer filter layer 12 made of slotted paper, and the support body 40 and the fixing structure 70 are preferably formed according to example 2.

Alternatively, a coarse separator can be provided in particular, which operates on the principle of inertia by specifically accelerating the gas flow at the impact surface, the flow being deflected by at least 180 ° along the impact surface and subsequently deflected by at least 180 ° rearward along the guide contour.

In this alternative application scenario, a filtering structure body 10 is used, preferably comprising horizontally oriented waves, to achieve horizontal flow in the wave voids.

Unlike the embodiment according to example 2, the fine filter stage can also be arranged together with the coarse separator in a common covering cardboard as a frame.

In another application, a combination of a coarse separator and a fine separator may be used. Advantageously, the support structure 40 and the fixing structure 70 are formed according to example 1, wherein in the support structure 40, a multi-layer paper web made of paper slotted to different degrees is inserted for coarse separation, and directly thereafter a fine filter mat made of polyester nonwoven is inserted for fine separation.

An advantageous method for producing the filter structure body 10 preferably comprises a process which is indicated in fig. 10 in the final stage of assembly, wherein the filter structure body 10 is inserted into a frame 110 which is designed, for example, as a sheathing cardboard. Along the longitudinal and transverse sides of the support structure 40, the filter structure body 10 has projections 36, 34, respectively. The filter construction body 10 is pushed through an inlet opening of the frame 110, wherein the inlet opening is released by the cover plates 116, 118 drawn in the open state and which closes the frame 110 after installation of the filter construction body 10.

In a first step, the support structure 40 is formed by the comb segments 42 and the connecting elements 50.

In a further step, the fastening structure 70 is plugged by the trapezoidal fastening element 72 and the connecting element 74.

In another step, a support structure 40 having an upwardly undulating negative profile is provided.

In another step, the filter layer 12 is placed into the undulating negative contour of the support structure 40. In the case of multiple filter layers, these layers may be placed in sequence. The filter layer 12 is placed such that at the open end and at the ends of the filter layer 12, there remain protrusions 34 that protrude from the support structure 40.

In a further step, the fastening means 70 are inserted into the recesses of the inserted filter layer 12.

In a further step, the projections 34 projecting beyond the front and rear ends of the filter layer 12 are folded over and the filter construction body 10 with the inserted filter layer 12 is pushed into the frame 110.

In another step, the frame 110 is closed. To this end, the cover plates 116, 118 are closed.

The filter module 100 according to the invention and the filter construction body 10 according to the invention have a number of advantages.

Due to the dimensionally stable support structure 40 and the fastening structure 70, the construction is extremely rigid, so that even in the case of a high paint loading of the filter layer 12, bending or collapse of the wave structure is reliably avoided.

A sufficient utilization of the inflow surface 18 and/or outflow surface 22 is achieved, since it is only covered linearly and not planarly by the support structure 40 and the fastening structure 70.

Since there are no members arranged parallel to the waves to reduce the net width of the openings, premature plugging of the inflow openings into the wave gap can be avoided. Thereby, an improved deep loading is achieved. The inflow surface 18 and the outflow surface 22 do not bulge. Improved flow guidance into the wave gap is achieved.

The support structure 40 provides an impact surface in front of the filter layer 12, particularly in the form of the attachment elements 50 (fig. 6), the base of the support structure 40, and the tines 46, 47 of the comb section 42, on which coating can settle without clogging the filter layer 12.

Advantageously, improved separation efficiency and flexibility of use result. By circumferentially clamping the filter layer 12 between the support structure 40 and the frame 110, slipping within the frame 110 surrounding the at least one filter structure can be reliably avoided.

Any filter material may be used for the single or multiple filter layers 12, such as a paper core web, a polyester nonwoven, a fine filter nonwoven, a glass fiber mat. The filter module 100 can be adapted very simply to various application situations.

Fig. 11 shows an advantageous coarse separator 200, which operates on the principle of inertia by specifically accelerating the gas flow at the impact surface. Fig. 12 shows the mode of action according to a cross section through the coarse separator 200.

The coarse separator 200 operates on the principle of inertia by specifically accelerating the gas flow at the impact surface, wherein the flow is deflected by 180 ° along the impact surface and subsequently deflected at least 180 ° backwards along the guide contour.

The coarse separator 200 comprises on the input side an inflow surface 220 and an acceleration section 212 (e.g. a nozzle) directed in the depth direction of the coarse separator 200, followed by a first impact surface 223 comprising a fluid flow diversion on a first curved section 239. The flow entry surface 220 forms a cross-section in front of the accelerator section 212.

For orientation, coordinate axes x, y are given. The x-axis corresponds to the longitudinal axis, which is preferably the main flow direction 91 of the accelerator section 212. In this example, the y-axis corresponds to a transverse axis along which the free-flow cross-section of the inlet face 220 and the inlet of the fluid into the accelerator section 212 are arranged. The z-axis is directed perpendicular to the plane of projection and corresponds in this example to the vertical axis of the coarse separator 200. In the y-axis direction, the acceleration section 212 is designed as a slot extending between a bottom piece 216 and a top cover piece 218 of the coarse separator 200.

In this embodiment, the coarse separator 200 is formed from a single separation section. Alternatively, two or more separation sections can be provided side by side, each having an acceleration section 212 and an inflow surface 220.

It will be appreciated by those skilled in the art that if the separation stage 100 is rotated 90, for example, about the x-axis, then the y-axis forms a vertical axis and the z-axis forms a horizontal axis.

The cross-sectional area can be understood as the cross-sectional area of the separating section perpendicular to the main flow direction 91.

The main flow direction 91 can be understood as an imaginary straight-line connection between the input side and the output side of the coarse separator 200. The fluid flow enters the coarse separator 200 on the input side and exits again on the output side, which in this example is opposite the input side, irrespective of whether one or more directional turns are achieved inside the coarse separator 200.

The flow inlet surface 220 turns into the wall of the accelerator section 212. The accelerator section 212 is aligned with its open end 226 with an impact region 224 of the first impact surface 223 arranged transversely thereto at a distance. The impact zone is shown here as flat. Optionally, the impingement zone may also have a tip 240 directed toward the acceleration section 212, as indicated in fig. 11 by the dashed line in the top cover 218 of the coarse separator 200.

Following the bend section 230 of the first impingement surface 223 is a second impingement surface 238 that includes a reverse fluid flow diversion over another bend section 232 that is reversed relative to the first bend section. The fluid flow is indicated by the thick straight and rounded arrows.

Fluid (e.g., air from a painting installation and a mixture of paint particles and paint agglomerates) contacts the inflow surface 220 and enters the acceleration section 212 of the coarse separator 200 in the flow direction in the x-axis direction. It is simply ignored here that since the acceleration section 212 runs rounded at the entrance of the fluid into the acceleration section 212, the portion of the fluid that contacts the intake surface 220 experiences a deflection into the acceleration section 212.

Symmetrically with respect to the longitudinal direction of the acceleration section 212, the incoming fluid flow is divided in the transverse direction from both sides into two partial flows flowing oppositely away from each other and deflected outwards from the end 226 of the acceleration section 212. After the flat impact zone 224, which is shown in this example with respect to the acceleration section 212, on both sides are sections 230 of the first impact surface 223 that are uniformly curved with a certain radius.

The end edge of the first curved section 230 is directed towards a second impact surface 232 also having a curved section. Advantageously, the second impact surface 232 is formed by the outer side of the accelerator section 212.

The inflowing fluid is accelerated in the acceleration section 212 and after the impact zone 224, on the left side of the figure, turns clockwise corresponding to the bending of the bending section 230 and on the opposite right side turns counterclockwise. The deflection is at least 45 °, preferably more than 180 °, in this case 270 °, relative to the flow direction. A turn of more than 180 ° increases the probability of wall contact of particles in the fluid flow, thereby improving separation efficiency.

The fluid flow continues to turn at the second impingement surface 238, which is arranged with the entrance area transverse to the first bend section 230. The curved section of the second impact surface 238 curves opposite to the first curved section 230 of the first impact surface 223. The fluid flow continues to turn counterclockwise on the left side of the drawing and clockwise on the right side of the drawing, so that the fluid flow at the beginning of the impact surface flows counter to the original flow direction in the acceleration portion 212 and finally continues to turn in the direction of the x axis at the dividing wall 222. These two partial flows leave the coarse separator 200 in the original throughflow direction 91.

By controlling the centrifugal force of the turning at the curved sections 230, 232, particles from the fluid can be easily deposited on the curved sections 230, 232. Particles in the fluid flow that are located away from the first impact surface 223 after the first diversion thereof inevitably reach the vicinity of the second impact surface 238 during the second diversion at the second impact surface 238 and are easily deposited there and are thus removed from the fluid flow.

Upstream of the slot-like acceleration section 212, the coarse separator has a guide element 214 which can be detachably preset. The guide element 214 extends from the bottom part 216 to the top cover part 218 along the vertical axis z in the plane of symmetry of the free flow cross-section at the entrance of the fluid into the acceleration section 212. In this example, the guide element 214 has an expansion section parallel to the z-axis.

In this example, the guide element 214 is designed to taper towards the direction of flow, having a V-shaped cross-section, for example. The guide elements 214 may be used to minimize noise as it flows through the coarse separator 200. The guide elements 214 influence the through-flow, so that noise development can be reduced or suppressed as far as possible.

By suitable positioning and/or shaping of the guide element 214, the guide element can induce turbulence in the incoming fluid (e.g., incoming air) and/or reflections of sound generated after the acceleration section 212.

The coarse separator 200 can likewise be constructed entirely from stamped parts, which are transported compactly and only assembled into the coarse separator 200 on site.

In fig. 13, an embodiment of a modular filter module 100 is shown, which comprises a coarse separator 200 according to fig. 11 followed by a fine filter stage 250, of which only the frame 110 is indicated.

The filter construction body 10 serves as a fine filter stage 250 downstream of the coarse separator 200, which comprises a filter layer 12, for example a fine filter mat made of a polyester nonwoven or a glass fiber material or the like.

The filter construction body 10 is arranged directly downstream of the coarse separator 200 and may be arranged in a common frame 110, for example in a coated cardboard. The comb-shaped section 42 of the support structure 40 at the same time facilitates the structure of the coarse separator 200. The support structure 40 is supported on the outlet side of the coarse separator 200 by the base 44 of the comb structure 42.

In this case, a filter structure body 10 is preferably used, wherein the waves of the filter layer 12 are oriented horizontally, i.e. parallel to the y-axis, which in the drawing is perpendicular to the drawing plane. This orientation of the waves enables horizontal flow in the wave voids of the filter layer 12. Thus, the waves of the filter layer 12 are transverse (in particular perpendicular) to the slot-like expansion section of the acceleration section 212 of the coarse separator 200 (fig. 11).

If the coarse separator 200 is tilted, for example, about the x-axis, then advantageously a relative orientation of the waves of the filter layer 12 of the fine filter stage 250 transversely to the expansion section of the acceleration section 212 is obtained.

Preferably, the filter structure body 10 is sized so as to be fineThe filter stage 250 saturates as quickly as the coarse separator 200. Specifically, a coarse separator 200 about 300mm deep may be about 0.7m deep with a coarse separator 200 about 200mm deep²The filter structure body 10 of filter area. Both can be arranged in a common 500mm deep coated cardboard as the frame 110.

Unlike the embodiment in fig. 1, no connecting element 50 is arranged on the support structure 40 in front of the wave crest 30, whereby the smallest possible distance to the coarse separation stage 200 (fig. 11) is possible. Instead, the connecting elements 50 between the comb sections 42 are arranged in the valleys, as can be seen at the comb sections 42 in fig. 14. This is possible here because, due to the pre-separation in the coarse separator 200, it is not necessary to take into account the premature blocking of the wave trough due to excessive paint adhesion on the connecting element 50.

In a manner similar to example 2, the support structure 40 and the fixing structure 70 are formed. In particular, the support structure 40 may be formed such that three complete peaks 30 are formed by the interposed filter layer 12 (e.g., filter mat). The dimensions of the inflow face are about 0.5m x 0.5m and the support structure 40 comprises three comb-like sections 42.

In addition to the comb segments 42, the support structure 40 may additionally comprise wedge-shaped (preferably substantially trapezoidal) stiffening elements, not shown separately, which are each arranged centrally, viewed in the y-axis direction, between two comb segments 42 in a trough. It facilitates additional support of the filter layer 12, such as a filter mat, when the waves are oriented horizontally, and thereby prevents these waves from "sagging" as the paint load increases. The advantages of using these stiffening elements instead of the additional comb sections 42 are: the stiffening element does not impede the horizontal flow in the wave gap too much.

Preferably, the depth of the filter structure body 10 is determined based on the spacing between the feed side opening 112 and the purification side opening 114 of the frame 110 (fig. 10) such that the fine filter stage 250 occupies only half the distance together with the filter structure body 10. The depth of the filter construction body 10, viewed in the x-axis direction, is, for example, only about 200 mm.

The shown series connection of the coarse separator 200 and the filter layer 12 of the fine filter stage 250 allows to combine a high storage capacity with a good fine separation, i.e. with a high separation efficiency.

Advantageously, a kit made of corrugated cardboard stampings for the supporting structure 40, corresponding to every third comb section 42, comprises four additional, substantially trapezoidal stiffening elements, respectively.

The advantage of a high separation efficiency can also be achieved by using (only) one filter layer 12 made of a fine filter mat, which itself comprises a three-dimensionally shaped surface on the inflow side in order to increase the storage volume. In this manner, a larger surface is available for depositing the separated coating so as not to clog the filter layer 12 as quickly. This variant can offer further advantages, such as lower material costs, lower assembly expenditure for the filter module (since only one filter layer has to be inserted), increased separation efficiency and storage capacity in the case of certain applications, in particular when the coating particles are relatively dry.

To this end, fig. 15 and 16 show an advantageous filter layer 12 with a three-dimensionally structured surface, which can be configured in the form of a filter mat.

In fig. 15, the filter layer 12 is shown in a side view, which is waved and three-dimensionally structured at least on one surface. Thus, the filter layer 12 provides an enlarged surface. Fig. 16 shows a top view of a filter layer 12 having a reticulated or honeycomb-like structured surface.

The three-dimensional surface structure of the filter layer 12 can be produced in various ways. By way of example, the filter layer 12 can have different material thicknesses, so that a surface with highest points and lowest points is produced, for example, in a wave-like design (fig. 15).

Alternatively, the filter layer (fig. 16) may be built up from two connected layers, wherein the upper layer (the layer on the raw gas side) is reticulated and has openings ("pores") such that the surface of the filter layer 12 has corresponding recesses. The openings in the upper layer can be produced here, for example, by cutting in the longitudinal direction of the layer and stretching the layer in the longitudinal direction orthogonal thereto. In this way, honeycomb-like openings or recesses are produced in the filter layer 12. The two layers can be made of the same filter nonwoven or of different filter materials, which can be distinguished, for example, by their fiber diameter or other material properties. The upper layer is preferably slightly rougher than the lower layer.

Two variants of the filter layer 12 can be used on the one hand for the fine filter stage in combination with an upstream coarse separator 200 as shown in fig. 13.

On the other hand, such a filter layer 12 can also be considered as the only separator due to the combination of high storage capacity and high separation efficiency.

Alternatively, a plurality of three-dimensionally structured layers according to fig. 15 and/or 16 can also be combined to form a filter layer 12, wherein the individual layers, however, do not have to be connected. Of the two or more layers, at least the layer on the raw gas side has a three-dimensionally structured surface, in particular a surface comprising openings. However, a plurality of layers including openings may be used in sequence.

Fig. 17 to 21 show a mounting device 300, 310 for assembling the filter structure body 40 and the filter module 100.

Fig. 17 shows an assembly device 300 for constructing a support structure 40 and a fixing structure 70 of a filter construction body according to the invention, while fig. 18 schematically shows the support structure 40 assembled in the assembly device 300 according to fig. 17.

Parts of the support structure 40 may be incorporated into the assembly apparatus 300 to hold it in place. For example, a tray with intersecting grooves 302, 304 elongated perpendicular to each other may be used as the mounting device 300.

Fig. 19 to 21 show a mounting device 310 for inserting a filter construction body into a frame 110, wherein the frame can be configured, for example, to cover a cardboard.

Fig. 19 shows a side view of the mounting device 310, fig. 20 shows the mounting device 302 in a perspective view, and fig. 21 shows the mounting device 310 in a side view, in which the frame 110 in the form of a sheathing cardboard is inserted and which comprises an open upper cover plate 116 and a lower cover plate 118.

The mounting device 310 has four side walls 312, 314 which are bent outwardly at their free ends. Wherein two opposing sidewalls 312 occupy the entire width of the mounting device 310 and the other two opposing sidewalls 314 have a smaller width. Within the side walls 312, 314, a table-like shelf 318 is arranged on the bottom surface 316 of the mounting device (fig. 19, 20).

A table-like shelf 318 is spaced from the side walls 312, 314 so that the covering carton (frame 110) with the cover 118 open can be pushed onto the shelf. The cover plate 118 abuts the bottom surface 216. The height of the shelf 318 is set such that, when placed on the shelf 318 and in the correct position relative to the frame 110, the filtering structure body 10 (fig. 10) or the coarse separator 200 together with the fine filter stage 250 is pushed into the frame 110, whereby the cover plates 116, 118 can be closed.

In this state, the raw side opening 112 and the purification side opening 114 in the frame 110 are also suitably closed (fig. 10), and the openings may be characterized in particular by perforations that can be simply broken in order to use the filtration module.

FIG. 22 illustrates a flow chart of one advantageous method for constructing a filter module.

In step S100, the support structure 40 is plugged from the comb segments 42 and the connecting elements 50.

In step S102, the fixing structure 70 is inserted from the fixing element 72 and the connecting element 74.

The plugging of the support structure 40 in step S100 can be realized in a mounting device 300 (fig. 16) which comprises a first receptacle 302 for the insertion of the connecting element 50 and a second receptacle 304 which is elongated perpendicularly thereto for the insertion of the comb structure 42.

In step S104, the filter layer 12 is placed with its support surface along the base 44 and tines 46, 47 of the support structure 40 in a wavy fashion into the support structure 40.

In step S106, the filter layer 12 is secured to the support structure 40 by inserting at least one securing structure 70 into the interstices of the inserted filter layer 12.

Advantageously, in the assembly device 300, the filter layer 12 can be inserted into the support structure 40 in a step S104 and the filter layer 12 can be fixed in the support structure 40 in a step S106.

In step S110, the filter structure body 40 is introduced into the frame 110. Advantageously, the introduction can be effected in the frame assembly device 310, wherein the frame 110 is pushed onto the shelf 316 in the frame assembly device 310 and the introduction of the filter construction body 40 up to the shelf 316 into the frame 110 is effected.

Reference numerals

10 Filter structure body

12 Filter layer

13 first layer

14 second layer

18 inflow surface

20 inflow region

22 outflow surface

24 outflow region

30 wave crest

32 wave trough

34 projection

36 projection

40 support structure

42 comb-shaped section

44 base

45 longitudinal direction

46 tine

47 tine

48 end remote from the base

50 connecting element

52 accommodating part

54 accommodating part

56 accommodating part

58 perforation

70 fixed structure

72 fixing element

74 connecting element

76 receiving part

78 accommodating part

80 stiffening element

90 direction

91 main flow direction

100 filtration module

110 frame

112 side opening of raw material side

114 purification side opening

116 cover plate

118 cover plate

200 coarse separator

212 acceleration section

214 guide element

216 bottom part

218 Top cover

220 inflow surface

222 boundary wall

223 first impact surface

224 impact zone

226 acceleration section end

238 second impact surface

230 first curved section

232 reversely bent section

240 tip

250 fine filtration stage

300 assembling device

302 slot

304 slot

310 assembling device

312 side plate

314 side plate

316 shelf

318, and a bottom surface.