阅读说明：本技术 一种滑片结构及设置其的压缩机 (Slip sheet structure and compressor with same ) 是由 李伟 陈可 余风利 廖熠 于 2020-07-16 设计创作，主要内容包括：本发明提供了一种滑片结构及设置其的压缩机,涉及压缩机技术领域,解决了现有滑片对滚子有较大冲击作用的技术问题。该滑片结构包括中层滑片和外层滑片,中层滑片的数量为N层,外层滑片的数量为N+1层,外层滑片与中层滑片依次交替设置,且N为大于等于1的正整数；其中,每个中层滑片均具有开口槽,使中层滑片与相邻两层外层滑片之间形成空腔结构。在中层滑片上设置开口槽,降低了滑片的重量,减少了工作过程中的往复惯性力,减小了对滚子的冲击作用,降低了振动及噪声；而且中层滑片与相邻两层外层滑片之间形成的空腔结构内能存储一定量的润滑油,有利于降低泵体内温度,提高压缩机容积效率,提高制冷量,提升了压缩机的综合性能。(The invention provides a sliding vane structure and a compressor with the sliding vane structure, relates to the technical field of compressors, and solves the technical problem that an existing sliding vane has a large impact effect on a roller. The sliding sheet structure comprises a middle-layer sliding sheet and outer-layer sliding sheets, wherein the number of the middle-layer sliding sheets is N, the number of the outer-layer sliding sheets is N +1, the outer-layer sliding sheets and the middle-layer sliding sheets are sequentially and alternately arranged, and N is a positive integer greater than or equal to 1; each middle-layer sliding sheet is provided with an open slot, so that a cavity structure is formed between the middle-layer sliding sheet and the two adjacent outer-layer sliding sheets. The open slot is arranged on the middle sliding sheet, so that the weight of the sliding sheet is reduced, the reciprocating inertia force in the working process is reduced, the impact effect on the roller is reduced, and the vibration and the noise are reduced; and a certain amount of lubricating oil can be stored in the cavity structure formed between the middle-layer sliding vane and the two adjacent outer-layer sliding vanes, so that the temperature in the pump body can be reduced, the volumetric efficiency of the compressor can be improved, the refrigerating capacity can be improved, and the comprehensive performance of the compressor can be improved.)

1. The sliding vane structure is characterized by comprising a middle-layer sliding vane (1) and an outer-layer sliding vane (2), wherein the number of the middle-layer sliding vane (1) is N, the number of the outer-layer sliding vane (2) is N +1, the outer-layer sliding vane (2) and the middle-layer sliding vane (1) are sequentially and alternately arranged, and N is a positive integer greater than or equal to 1; each middle-layer sliding piece (1) is provided with an open slot (11), so that a cavity structure is formed between the middle-layer sliding piece (1) and the two adjacent outer-layer sliding pieces (2).

2. The sliding blade structure according to claim 1, wherein the number of the open slots (11) is two, and the two open slots (11) divide the middle sliding blade (1) into a middle upright post (12) and two elastic cantilevers (13) at two sides.

3. The sliding sheet structure of claim 2, wherein the bottom of the open slot (11) is opened with a tail slot (111) near the elastic cantilever (13).

4. The slider structure according to claim 1, wherein the number N is 1, and the thickness of the middle slider (1) is equal to the thickness of the outer slider (2).

5. A slider structure according to claim 4, characterised in that the thickness of the middle slider (1) is not less than 1.2 mm.

6. The slider structure of claim 2, wherein the width of the resilient cantilever (13) is not less than 3 mm.

7. Sliding vane structure according to claim 1, characterized in that the open slot (11) is a rectangular slot.

8. The sliding vane structure as claimed in claim 1, wherein the head of the middle sliding vane (1) and the head of the outer sliding vane (2) are both arc-shaped.

9. The slider structure according to any of claims 1 to 8, characterized in that a resilient mechanism is provided in said open slot (11).

10. The sliding structure according to claim 9, wherein the resilient means is a bow spring (3).

11. A compressor, characterized by comprising a roller (4) and a sliding vane structure according to any of claims 1-10, the junction of the sliding vane structure and the roller (4) forming a wedge-shaped sealed space (5).

Technical Field

The invention relates to the technical field of compressors, in particular to a sliding vane structure and a compressor with the sliding vane structure.

Background

The sliding vane is an important part for forming the compressor, and the structural form of the sliding vane has great influence on the performance of the compressor.

The applicant has found that the prior art has at least the following technical problems:

in the working and running process of the compressor, the sliding sheet has a large impact effect on the roller to generate vibration and noise; meanwhile, the end face of the sliding vane is used as an important leakage channel in the compressor, so that the volumetric efficiency of the compressor is further reduced, and the comprehensive performance of the compressor is poor; and the internal temperature of the compressor is higher, so that the volumetric efficiency of the compressor is reduced, and the refrigerating capacity is reduced.

Disclosure of Invention

The invention aims to provide a sliding vane structure and a compressor with the sliding vane structure, which can at least solve the technical problem that the sliding vane has larger impact action on a roller in the prior art. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.

In order to achieve the purpose, the invention provides the following technical scheme:

the sliding vane structure comprises a middle-layer sliding vane and an outer-layer sliding vane, wherein the number of the middle-layer sliding vane is N, the number of the outer-layer sliding vane is N +1, the outer-layer sliding vane and the middle-layer sliding vane are sequentially and alternately arranged, and N is a positive integer greater than or equal to 1; each middle-layer sliding piece is provided with an open slot, so that a cavity structure is formed between the middle-layer sliding piece and the two adjacent outer-layer sliding pieces.

Optionally, the number of the open slots is two, and the two open slots divide the middle layer sliding piece into a middle upright post and two elastic cantilevers at two sides.

Optionally, a tail groove is formed at the bottom of the open groove, which is close to the elastic cantilever.

Optionally, the number N is 1, and the thickness of the middle layer slip sheet is equal to that of the outer layer slip sheet.

Optionally, the thickness of the middle layer slip sheet is not less than 1.2 mm.

Optionally, the width of the elastic cantilever is not less than 3 mm.

Optionally, the open slot is a rectangular slot.

Optionally, the head portions of the middle sliding piece and the outer sliding piece are both arc-shaped.

Optionally, an elastic mechanism is arranged in the opening groove.

Optionally, the resilient mechanism is a bow spring.

The invention provides a compressor, which comprises a roller and any sliding vane structure, wherein a wedge-shaped sealing space is formed at the joint of the sliding vane structure and the roller.

According to the sliding vane structure and the compressor with the sliding vane structure, the open slot is formed in the middle sliding vane, so that the weight of the sliding vane is reduced, the reciprocating inertia force in the working process is reduced, the impact effect on a roller is reduced, and the vibration and noise are reduced; and a certain amount of lubricating oil can be stored in the cavity structure formed between the middle-layer sliding vane and the two adjacent outer-layer sliding vanes, so that the temperature in the pump body can be reduced, the volumetric efficiency of the compressor can be improved, the refrigerating capacity can be improved, and the comprehensive performance of the compressor can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a first slider structure according to an embodiment of the present invention;

FIG. 2 is a schematic front view of the layer slip sheet structure of FIG. 1;

FIG. 3 is a schematic view of a first slide structure with a bow spring disposed in the open slot;

FIG. 4 is a schematic top view of a first slider structure;

FIG. 5 is a schematic top view of a second slider structure according to an embodiment of the present invention, which employs five layers of sliders;

FIG. 6 is a schematic structural diagram of a third sliding vane structure according to an embodiment of the present invention, in which the opening slot is a circular arc;

FIG. 7 is a schematic structural diagram of a fourth slider structure according to an embodiment of the present invention, in which the open slot is triangular;

FIG. 8 is a schematic view of a roller and vane arrangement of a compressor according to an embodiment of the present invention;

fig. 9 is a partially enlarged structural view of a portion C in fig. 8.

FIG. 1 shows a middle slide sheet; 11. an open slot; 111. a tail groove; 12. a middle upright post; 13. a flexible cantilever; 2. an outer layer sliding sheet; 3. a bow spring; 4. a roller; 5. the wedge seals the space.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

As shown in fig. 1-7, the present invention provides a sliding vane structure, which includes a middle sliding vane 1 and an outer sliding vane 2, wherein the number of the middle sliding vane 1 is N, the number of the outer sliding vane 2 is N +1, the outer sliding vane 2 and the middle sliding vane 1 are alternately arranged in sequence, and N is a positive integer greater than or equal to 1; each middle-layer sliding sheet 1 is provided with an open slot 11, so that a cavity structure is formed between the middle-layer sliding sheet 1 and the two adjacent outer-layer sliding sheets 2.

The open slot 11 is arranged on the middle sliding sheet 1, so that the weight of the sliding sheet is reduced, the reciprocating inertia force in the working process is reduced, the impact effect on the roller 4 is reduced, and the vibration and the noise are reduced; and the cavity structure that forms between middle level gleitbretter 1 and the adjacent two-layer skin gleitbretter 2 can save a certain amount of lubricating oil, is favorable to reducing the internal temperature of pump, improves compressor volumetric efficiency, improves the refrigerating output, has promoted the comprehensive properties of compressor.

When the working chamber pressure differential of gleitbretter both sides is bigger, can consider five layers, seven layers or more, outer gleitbretter 2 sets up with middle level gleitbretter 1 in turn, and the flange terminal surface forms more volume constantly changeable cavity with the gleitbretter clearance, forms labyrinth seal, and it can be better to reduce the leakage effect. And accordingly the overall thickness of the slider will increase. FIG. 5 shows a five layer slider case.

As an alternative embodiment, the number of the opening grooves 11 is two, for example, two opening grooves 11 are formed at the position where the middle layer slide sheet 1 is more than 3mm away from the upper and lower end faces and the head end face. The two open slots 11 divide the middle slide 1 into a middle upright 12 and two elastic cantilevers 13 at both sides. The elastic cantilever 13 of the middle layer slip sheet 1 can perform elastic compensation, reduce the leakage of the end face of the slip sheet, absorb partial impact energy, and further reduce vibration and noise.

As an alternative embodiment, the bottom of the open slot 11 is provided with a tail slot 111 near the elastic cantilever 13, so as to add the elastic cantilever 13. The width of the tail groove 111 is 2mm and the depth is 2 mm.

As an alternative embodiment, as shown in fig. 1, the number N is 1, that is, the slider body is composed of three layers of sliders, namely, a middle slider 1 and outer sliders 2 located at two sides of the middle slider; and the thickness of the middle layer sliding sheet 1 is equal to that of the outer layer sliding sheet 2.

As an alternative embodiment, the thickness of the middle layer slide sheet 1 and the thickness of the outer layer slide sheet 2 are the same, and are not less than 1.2 mm. The leakage was reduced by about 0.17 times when the thickness was 1.2mm compared to 1mm, and about 0.33 times when the thickness was 1.5mm compared to 1 mm.

As an alternative embodiment, the width of the elastic cantilever 13 is not less than 3 mm. The width is designed to ensure that the elastic cantilever 13 does not generate excessive leakage outside the compressor, and the space of the open slot 11 is also considered. When the width of the elastic cantilever 13 is increased, in order to control the gap, the rigidity of the spring arranged in the open slot 11 is also correspondingly improved, and the space of the spring slot is correspondingly reduced, which is not beneficial to the light weight of the sliding sheet and the storage of lubricating oil.

As an alternative embodiment, the open slot 11 is a rectangular slot, which facilitates machining.

The shape of the open slot 11 can also be circular arc, triangle, etc., as long as the width of the elastic cantilever 13 and the strength of the middle upright post 12 are ensured. The arc-shaped open grooves 11 are shown in fig. 6, and the triangular open grooves 11 are shown in fig. 7.

As an alternative embodiment, the head parts of the middle layer slide sheet 1 and the outer layer slide sheet 2 are both arc-shaped. When the arc-shaped head part of the sliding vane is matched with the roller 4, an independent wedge-shaped sealing space 5 is formed, certain oil film bearing capacity is generated, and lubrication is facilitated. See fig. 9.

As an alternative embodiment, a resilient mechanism is provided within the open slot 11. In the working process of the compressor, under the action of the elastic mechanism, the elastic cantilever 13 expands and deforms, so that the width of a gap between the end face of the slip sheet and the upper and lower flanges is reduced, and the leakage amount of the end face of the slip sheet is reduced.

As an alternative embodiment, the resilient means is a bow spring 3. The opening of the bow spring 3 is towards the side of the elastic cantilever 13, which is more stable. The resilient means may be replaced by other compression springs, such as leaf springs, helical springs, etc.

It is necessary to leave enough space in the upper portion of the center pillar 12 to engage with the spring and to ensure that the center pillar 12 does not undergo bending deformation during operation.

As shown in fig. 8, the present invention further provides a compressor, which comprises a roller 4 and any one of the above sliding vane structures, wherein a wedge-shaped sealed space 5 is formed at the joint of the sliding vane structure and the roller 4.

The sliding vane structure and the roller 4 form an independent wedge-shaped space when being matched, a certain amount of lubricating oil is stored in the space, a certain oil film bearing capacity can be generated, the lubricating effect is facilitated, the labyrinth sealing effect can be achieved, the leakage is reduced, and the comprehensive performance of the compressor is improved.

When the gas flows through the clearance between the slip sheet and the roller 4, the gas flow is subjected to the first throttling action, the pressure and the temperature are reduced, the flow velocity is increased, and then the gas flows into the wedge-shaped sealing space 5 with larger space, because the volume is suddenly increased, a strong vortex is formed, the flow velocity is greatly reduced, the kinetic energy is converted into heat, and the energy loss is caused; therefore, after the gas passes through the gap and the enlarged wedge-shaped sealing space 5, the gas is equivalent to one-time throttling and expansion, the vortex loses energy once and again, the gas pressure is continuously reduced, and the leakage is gradually reduced along with the continuous reduction of the pressure.

The overall dimensions, including thickness, length and height, of the sliding piece component with the new structure are consistent with those of the original sliding piece, and the fit clearance between the sliding piece and the sliding piece groove needs to be met; the novel structure slip sheet is totally divided into three layers, two sides of the novel structure slip sheet are respectively provided with an outer layer slip sheet 2 and a middle layer slip sheet 1, the width of an elastic cantilever 13 is reserved on the two sides of the middle layer slip sheet 1, a spring groove is formed in the width area of a middle upright post 12, the two sides of the spring groove are cut into the elastic cantilever 13, and a bow spring 3 is added in an installation time slot.

The end face leakage of the sliding vane can be regarded as fluid leakage between parallel plates, and the mass flow rate is about:

the provision of the middle layer slider 1 enables the leakage width to be reduced, but the length h of the leakage path is also controlled, i.e. the thickness of the slider, and there is also no improvement when the middle layer slider 1 is too thin. Also, this formula is used to prevent excessive leakage of the lubricant in the clearance to the working chamber. In summary, to ensure the matching with the original sliding vane slot and reduce the leakage to the maximum, the three layers of sliding vanes are preferably 1/3 of the total thickness of the original sliding vanes, and the thickness of each layer of sliding vanes is recommended to be not less than 1.2mm (1.2mm is reduced by about 0.17 times compared with 1mm in the case of leakage, and 1.5mm is reduced by about 0.33 times compared with 1mm in the case of leakage); for convenience of processing, the open slot 11 (spring slot) of the middle layer slip sheet 1 is designed in a square shape, a tail slot 111 with the width of 2mm is cut at the position close to the left corner and the right corner,cutting this forked tail can do benefit to elastic cantilever 13's deformation more, reduces the clearance of gleitbretter terminal surface to the leakage quantity is let out to the effective control gleitbretter terminal surface, improves the volume efficiency. According to the fit clearance and the elastic modulus of the sliding sheet material, the bow spring 3 with a proper stiffness coefficient is selected, so that excessive friction loss caused by excessive tension of a cantilever of the sliding sheet due to excessive elasticity of the bow spring 3 is avoided, the compressor power is too high, and the refrigerating capacity is reduced. Elastic cantilever 13 width must not be less than 3mm, both guarantee that here can not produce too big compressor and leak outward like this, design simultaneously in order to design jointly with the spring, when the width increases, for the control clearance, spring rate also correspondingly improves, but spring groove space will reduce, be unfavorable for gleitbretter lightweight and storage lubricating oil, but elastic cantilever 13 width also can cause outer leakage risk to increase when too little, simultaneously with the outer gleitbretter 2's of both sides area of contact reduction, contact stress increases, the friction that deformation and three's relative motion produced also can aggravate, also can produce negative effects to the compressor consumption.

In the embodiment, the thickness of the sliding sheet is reduced and improved to be composed of three layers of sliding sheets on the basis of the existing sliding sheet structure, wherein a spring groove is formed in each layer of sliding sheet 1, and a bow spring 3 is added. The lower part of the spring slot is provided with a tail slot 111, so that the elastic cantilevers 13 at the two sides of the middle-layer slip sheet 1 have certain flexibility and are easy to elastically deform. After the middle layer sliding sheet 1 is grooved, the structural weight is reduced, the impact force on the roller 4 is reduced during working, and the sliding sheet can elastically deform, absorb impact energy and play a role in vibration reduction and noise reduction; the space inside the sliding vane structure can store a certain amount of lubricating oil, so that the sliding vane is beneficial to lubricating in movement, meanwhile, the lubricating oil can reduce the temperature in the pump body, and the volumetric efficiency of the compressor is improved; the bow spring 3 is additionally arranged in the middle-layer sliding piece 1, the elastic cantilever 13 is expanded, the leakage of two end faces of the sliding piece can be reduced, the head of the sliding piece can form a wedge-shaped sealing space 5, a certain amount of lubricating oil is stored to be beneficial to lubrication, and meanwhile, the labyrinth sealing effect can be better played, so that the leakage of the compressor is less.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.