阅读说明：本技术 一种风机安装结构及应用有该风机安装结构的吸油烟机 (Fan mounting structure and range hood with same ) 是由 刘元卉 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种风机安装结构,包括用于与外部安装基础连接固定的横梁、蜗壳支架以及紧固螺钉,所述蜗壳支架包括支架本体、设置在支架本体相对两端的第一夹持部和第二夹持部,所述第一夹持部和第二夹持部用于与风机夹紧配合或松开,所述第一夹持部、第二夹持部位于支架本体的同一侧,所述横梁则位于支架本体相对的另一侧,所述紧固螺钉穿过横梁旋紧而能推动蜗壳支架向远离横梁方向移动,所述蜗壳支架保持向横梁方向移动的趋势。与现有技术相比,本发明的优点在于：在运输过程中,可以将蜗壳的位置进行固定,防止运输中的振动导致变形,待吸油烟机安装好之后,可以与风机脱离、而避免风机的振动传递到整机产生共振异音。(The invention discloses a fan mounting structure which comprises a cross beam, a volute bracket and a fastening screw, wherein the cross beam is used for being connected and fixed with an external mounting base, the volute bracket comprises a bracket body, a first clamping part and a second clamping part, the first clamping part and the second clamping part are arranged at two opposite ends of the bracket body and are used for being clamped and matched with or loosened from a fan, the first clamping part and the second clamping part are positioned at the same side of the bracket body, the cross beam is positioned at the other opposite side of the bracket body, the fastening screw penetrates through the cross beam and is screwed to push the volute bracket to move in the direction far away from the cross beam, and the volute bracket keeps the trend of moving in the direction of the cross beam. Compared with the prior art, the invention has the advantages that: in the transportation process, the position of the volute can be fixed, the deformation caused by the vibration in the transportation process is prevented, and after the range hood is installed, the range hood can be separated from the fan, so that the vibration of the fan is prevented from being transmitted to the whole machine to generate resonance abnormal sound.)

1. The utility model provides a fan mounting structure which characterized in that: the volute casing support is characterized by comprising a cross beam (41) used for being connected and fixed with an external installation base, a volute casing support (42) and fastening screws (44), wherein the volute casing support (42) comprises a support body (421), a first clamping portion (422) and a second clamping portion (423) which are arranged at two opposite ends of the support body (421), the first clamping portion (422) and the second clamping portion (423) are used for being in clamping fit with or loosened from a fan (3), the first clamping portion (422) and the second clamping portion (423) are located on the same side of the support body (421), the cross beam (41) is located on the other opposite side of the support body (421), the fastening screws (44) penetrate through the cross beam (41) to be screwed tightly to push the volute casing support (42) to move in the direction away from the cross beam (41), and the volute casing support (42) keeps the trend of moving in the direction of the cross beam (41).

2. The blower mounting structure according to claim 1, wherein: the support limiting buckle (43) comprises a top plate (431) spanning a support body (421) and side plates (432) extending from the end portions of the top plate (431) to the direction of the cross beam (41), the top plate (431) and the cross beam (41) are located on two opposite sides of the support body (421), the side plates (432) are fixedly connected with the cross beam (41), and a return spring (45) enabling the support body (421) to keep moving trend towards the direction of the cross beam (41) is arranged between the top plate (431) and the support body (421).

3. The blower mounting structure according to claim 2, wherein: the support is characterized by further comprising a spring positioning screw (46), wherein the spring positioning screw (46) is tightly abutted to one end, far away from the support body (421), of the return spring (45).

4. The blower mounting structure according to claim 2, wherein: the support body (421) is long-strip-shaped, the first clamping part (422) and the second clamping part (423) are located at two ends of the support body (421) in the length direction, the side plates (432) are located at two sides of the support body (421) in the width direction, lugs (424) extending in the top plate (431) direction are further arranged on two opposite sides of the support body (421) in the width direction respectively, the position of each side plate (432) corresponds to the lugs (424), limiting folding edges (434) bent towards the other side plate (432) are arranged on each side plate (432) along two sides of the support body (421) in the length direction respectively, and each lug (424) is clamped between two limiting folding edges (434) on the same side plate (432).

5. The blower mounting structure according to claim 1, wherein: and an oil leakage hole (425) is formed at the joint of the support body (421) and the first clamping part (422) or the joint of the support body (421) and the second clamping part (423).

6. The blower mounting structure according to claim 1, wherein: the surface of the cross beam (41) close to the bracket body (421) is parallel to the surface of the bracket body (421) far away from the cross beam (41).

7. A range hood applying the fan mounting structure of any one of claims 1 to 6, comprising a box body (2), wherein the fan (3) is arranged in the box body (2), and the range hood is characterized in that: the box body (2) is used as an external mounting base and fixed with a cross beam (41), the fan mounting structure is located below the fan (3), and the cross beam (41) is located below the volute bracket (42).

8. The range hood of claim 7, wherein: the first clamping portion (422) is formed by bending one end of the support body (421) at an angle in a direction away from the support body (421), the second clamping portion (423) is formed by bending the other end of the support body (421) at an angle in a direction away from the support body (421), the fan (3) comprises a volute (31), the volute (31) comprises a front cover plate (311) and a rear cover plate (312), the bottom of the front cover plate (311) of the volute (31) is provided with a first clamping surface (3111) matched with the first clamping portion (422), and the bottom of the rear cover plate (312) of the volute (31) is provided with a second clamping surface (3121) matched with the second clamping portion (423).

9. The range hood of claim 8, wherein: the first clamping surface (3111) and the inner side surface of the first clamping portion (422) close to the first clamping surface (3111) form an included angle theta 1, the second clamping surface (3121) and the inner side surface of the second clamping portion (423) close to the second clamping surface (3121) form an included angle theta 2, and theta 1>2 DEG and theta 2 >2 DEG are satisfied.

10. The range hood of claim 8, wherein: the included angle between the first clamping part (422) and the bottom surface of the support body (421) is phi 1, the included angle between the second clamping part (423) and the bottom surface of the support body (421) is phi 2, and the included angle phi 1 is more than 90 degrees, and the included angle phi 2 is more than 90 degrees.

Technical Field

The invention relates to an oil fume purification device, in particular to a fan mounting structure and a range hood applying the fan mounting structure.

Background

The range hood has become one of indispensable kitchen appliances in modern families, utilizes the fluid dynamics principle to work, inhales and exhausts oil smoke through a centrifugal fan arranged in the range hood, and uses a filter screen to filter partial grease particles. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, accelerated by the fan and collected by the volute and guided to be discharged out of a room.

In the existing range hood, a volute of a fan is usually fixed on a fan frame through a support by screwing. The volute of the range hood disclosed in the chinese patent with application number 201710305856.3 includes a volute bracket installed at a position where the spiral degree of the volute is maximum, and plays a role in fixing.

When the range hood works, the vibration of the motor of the fan causes the resonance of a fan system, and the resonance can be transmitted to the fan frame through the bracket and then to the whole range hood body, so that the resonance of the whole range hood is caused. However, if the fixed support is removed, the fan system is deformed due to vibration and the like in the transportation process of the range hood, and finally the performance or structure of the range hood is abnormal. Therefore, further improvements are desired.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a fan mounting structure, which can clamp or release a fan to adapt to different transportation and installation states, in order to overcome the shortcomings of the prior art.

The second technical problem to be solved by the invention is to provide a range hood with the fan mounting structure, which ensures that the volute can be supported in the transportation process and avoids the direct contact with the fan frame to generate resonance abnormal sound after the mounting is finished.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a fan mounting structure which characterized in that: including being used for being connected fixed crossbeam, spiral case support and fastening screw with the external mounting basis, spiral case support includes the support body, sets up first clamping part and the second clamping part at the relative both ends of support body, first clamping part and second clamping part are used for pressing from both sides tight cooperation or loosen with the fan, first clamping part, second clamping part are located same one side of support body, the crossbeam then is located the opposite side that the support body is relative, fastening screw passes the crossbeam and screws and can promote spiral case support and remove to keeping away from the crossbeam direction, spiral case support keeps the trend to the crossbeam direction removal.

The spiral case support is convenient to limit the position of the spiral case support and reset, the spiral case support further comprises a support limiting buckle, the support limiting buckle comprises a top plate stretching across the support body and side plates extending from the end portion of the top plate to the direction of the cross beam, the top plate and the cross beam are located on two opposite sides of the support body, the side plates are fixedly connected with the cross beam, and a reset spring enabling the support body to keep moving towards the direction of the cross beam is arranged between the top plate and the support body.

In order to avoid the reset spring from moving, the support further comprises a spring positioning screw, and the spring positioning screw and one end, far away from the support body, of the reset spring are abutted tightly.

In order to limit the movement of the volute bracket in the direction perpendicular to the fastening screw conveniently, the bracket body is long-strip-shaped, the first clamping part and the second clamping part are located at two ends of the bracket body in the length direction, the side plates are located at two sides of the bracket body in the width direction, lugs extending in the top plate direction are further arranged on two opposite sides of the bracket body in the width direction respectively, the positions of the side plates correspond to the lugs, limiting flanges bent towards the other side plate are arranged on two sides of each side plate in the length direction of the bracket body respectively, and each lug is clamped between two limiting flanges on the same side plate.

In order to optimize the oil path after the range hood is installed, an oil leakage hole is formed in the joint of the support body and the first clamping part or the joint of the support body and the second clamping part.

In order to ensure that the force applied to the volute bracket by the fastening screw can be perpendicular to the volute bracket, so that the volute bracket is stable in the upward movement process, the surface of the cross beam close to the bracket body is parallel to the surface of the bracket body far from the cross beam.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides an be applied as above fan mounting structure's range hood, includes the box, the fan sets up in the box its characterized in that: the box body is used as an external mounting base and fixed with the cross beam, the fan mounting structure is located below the fan, and the cross beam is located below the volute support.

Preferably, for the cooperation of clamping part and fan, first clamping part is angled to the direction of keeping away from the support body by the one end of support body and is buckled and form, the second clamping part is angled to the direction of keeping away from the support body by the other end of support body and is buckled and form, the fan includes the spiral case, the spiral case includes front shroud and back shroud, the front shroud bottom of spiral case, have be used for with first clamping part complex first clamping face, the back shroud bottom of spiral case, have be used for with second clamping part complex second clamping face.

For the spiral case support can constantly increase in the fastening force of screwing in-process applied to the spiral case, an included angle theta 1 is formed between the inner side faces, close to the first clamping face, of the first clamping face and the first clamping portion, an included angle theta 2 is formed between the inner side faces, close to the second clamping face, of the second clamping face and the inner side faces, close to the second clamping face, of the second clamping portion, and theta 1>2 degrees and theta 2 >2 degrees are met.

In order to ensure the force applied to the volute bracket by the fastening screw, component forces perpendicular to the inner side of the inclined planes are arranged on the inclined planes perpendicular to the left side and the right side of the volute to play a fastening role, the included angle between the first clamping part and the bottom surface of the bracket body is phi 1, the included angle between the second clamping part and the bottom surface of the bracket body is phi 2, and the included angle phi 1 is more than 90 degrees, and phi 2 is more than 90 degrees.

Compared with the prior art, the invention has the advantages that: thereby press from both sides tightly or break away from the fan through spiral case support relative movement for in the transportation, can fix the position of spiral case, prevent that the vibration in the transportation from leading to warping, treat after the range hood is installed, can break away from with the fan, and avoid the vibration transmission of fan to the complete machine to produce resonance abnormal sound, change into oil circuit optimizing apparatus simultaneously and use.

Drawings

FIG. 1 is a schematic view of a range hood according to an embodiment of the present invention;

fig. 2 is a schematic view of the range hood according to the embodiment of the present invention in a locked state of the fan mounting structure;

fig. 3 is a schematic locking state diagram of the fan mounting structure according to the embodiment of the present invention;

FIG. 4 is a schematic view of a bracket limiting buckle of the fan mounting structure according to the embodiment of the invention;

FIG. 5 is an exploded view of a fan mounting structure according to an embodiment of the present invention;

FIG. 6 is a schematic view of the range hood according to the embodiment of the present invention in a state where the fan mounting structure is unscrewed;

FIG. 7 is a schematic view of a fan mounting structure according to an embodiment of the present invention in an unscrewed state;

FIG. 8-1 is an enlarged view of a portion I of FIG. 2;

FIG. 8-2 is an enlarged schematic view of portion II of FIG. 2;

FIG. 9-1 is an enlarged schematic view of a portion III of FIG. 6;

fig. 9-2 is an enlarged view of a portion iv of fig. 6.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 and 2, a range hood, which is a ceiling range hood, includes a fume collecting hood 1, a box body 2 disposed above the fume collecting hood 1, a fan 3 disposed in the box body 2, and a fan mounting structure 4 for mounting the fan 3 and the box body 2. The fan 3 includes a volute 31 and an impeller (not shown) disposed within the volute 31, and the volute 31 includes a front cover plate 311, a rear cover plate 312, and an annular wall 313 disposed between the front cover plate 311 and the rear cover plate 312. The fan mounting structure 4 is provided at the bottom of the scroll case 31 for coupling or decoupling the fan 3 to or from the case 2.

The fan mounting structure 4 includes a cross beam 41, a volute bracket 42, a bracket stopper catch 43, a fastening screw 44, a return spring 45, and a spring set screw 46. In this embodiment, referring to fig. 2, since the air inlet of the fan 3 faces forward, the front cover plate 311 of the volute 31 is located in front of the rear cover plate 312, the cross beam 41 extends in the left-right direction, and two ends of the cross beam 41 are respectively connected and fixed with the left side and the right side of the box 2, so as to ensure the position of the whole fan mounting structure 4 in the box 2. Alternatively, when the air inlet of the fan 3 faces to the left or right, the front cover plate 311 and the rear cover plate 312 of the volute 31 are respectively located at the left and right sides, the beam 41 extends in the front-rear direction, and two ends of the beam 41 are respectively connected and fixed with the front and rear sides of the box 2.

Referring to fig. 3-5, 8-1, and 9-1, the volute bracket 42 and the cross beam 41 are both elongated and intersect, preferably perpendicularly in this embodiment. The volute bracket 42 is provided on a side of the cross beam 41 facing the fan 3, and in the present embodiment, the volute bracket 42 is provided above the cross beam 41. The volute housing 42 includes an elongated housing body 421, a first clamping portion 422 and a second clamping portion 423. The bracket body 421 has two opposite side surfaces, wherein the first side surface 4211 is close to the cross beam 41, and the second side surface 4212 is close to the bracket limiting buckle 43. As seen in fig. 2, the first side 4211 is a bottom surface of the stent body 421, and the second side 4212 is a top surface of the stent body 421.

Wherein, the first clamping portion 422 is bent at an angle toward a direction (in this embodiment, from bottom to top) away from the support body 421 at one end (in this embodiment, the front end) in the length direction of the support body 421, the second clamping portion 423 is bent at an angle toward a direction (in this embodiment, from bottom to top to back) away from the support body 421 at the other end (in this embodiment, the rear end) in the length direction of the support body 421, and the two clamping portions and the support limit buckle 43 are located at the same side of the support body 421. In the present embodiment, it is preferable that the height of the second clamping portion 423 is greater than the height of the first clamping portion 422. The first clamping portion 422 and the second clamping portion 423 correspond to the front cover plate 311 and the rear cover plate 312 of the scroll casing 31, respectively. The holder body 421 is further provided with lugs 424 extending in the direction of the holder stopper 43 (the top plate 431 of the holder stopper 43) on the opposite sides in the width direction. The joint of the support body 421 and the first clamping portion 422 or the joint of the support body 421 and the second clamping portion 423 is provided with an oil leakage hole 425, in this embodiment, after the installation is completed, the joint of the support body 421 and the second clamping portion 423 is the lowest position of the whole volute casing support 42, and therefore, the oil leakage hole 425 is formed at the position.

The bracket limiting buckle 43 is U-shaped as a whole, and includes a top plate 431, side plates 432 located at both sides of the top plate 431 and extending toward the cross beam 41, and a fixing plate 433 extending outward at the end of the side plates 432 far from the top plate 431. The top plate 431 is disposed at an interval on a side of the bracket body 421 away from the cross beam 41, two side plates 432 of the top plate are respectively located on two sides of the bracket body 421 in the width direction, and the fixing plate 433 is connected and fixed with the cross beam 41 and can be connected and fixed with the cross beam 41 by welding. The side plates 432 are positioned corresponding to the lugs 424 of the volute housing 42, each side plate 432 is provided with a limit folding edge 434 bent toward the other side plate 432 along two sides (in this embodiment, the front side and the rear side) of the housing body 421 in the length direction, and each lug 424 is clamped between two limit folding edges 434 of the same side plate 432, so that the housing limit buckle 43 limits the position of the volute housing 42 and prevents the volute housing 42 from moving in the transverse direction (the front-rear-left-right direction) but only in the up-down direction, that is, the axial direction of the fastening screw 44.

The cross beam 41 is provided with a first screw hole 411, and the fastening screw 44 can be screwed up through the first screw hole 411 to abut against the second side surface 4212 of the bracket body 421, so as to ensure the fastening effect of the volute bracket 42 on the volute 31. The return spring 45 is arranged between the top plate 431 of the bracket limiting buckle 43 and the bracket body 421, and is used for propping against the volute bracket 42 after the blower fan mounting structure 4 is unscrewed, so that the volute bracket is restored to the initial position. The top plate 431 of the bracket limiting buckle 43 is provided with a second screw hole 435, and the spring positioning screw 46 passes through the second screw hole 435 from top to bottom and is tightly abutted against one end of the return spring 45 far away from the bracket body 421, so that the position of the return spring 44 in the horizontal direction is limited, and the return spring 44 is prevented from moving.

When the volute bracket is installed, the cross beam 41 is fixed with the box body 2 at a certain angle, the lug 424 of the volute bracket 42 is sleeved in the bracket limiting buckle 43, the bracket limiting buckle 43 is welded on the transverse direction 41 in a spot mode, and the bottom plane of the bracket body 421 of the volute bracket 42 is kept parallel to the upper plane of the cross beam 41. The return spring 45 is interposed between the volute bracket 42 and the bracket stopper 43, and the spring set screw 46 is screwed to the bracket stopper 43, thereby applying a downward force to the volute bracket 42 for returning the volute bracket 42 in the unscrewed state. Finally, the first clamping portion 422 of the volute bracket 42 is aligned with the outer side of the bottom of the front cover plate 311 of the volute 31, the second clamping portion 423 is aligned with the outer side of the bottom of the rear cover plate 312 of the volute 31, the fastening screw 44 penetrates through the cross beam 41 upwards to be screwed, an upward force is applied to the volute bracket 42, and it is ensured that the two clamping portions of the volute bracket 42 can firmly clamp the volute 31 in the screwed state, so that the volute 31 cannot deform in the transportation process.

In order to ensure that the volute bracket 42 can effectively clamp the volute, there are several angles that need to satisfy the following requirements: the bottom of the front cover plate 311 of the volute casing 31 and the first clamping surface 3111 for matching with the first clamping portion 422 are inclined and gradually inclined backwards from top to bottom, an included angle theta 1 is formed between the inner side surfaces of the first clamping surface 3111 and the first clamping portion 422 close to the first clamping surface 3111, the bottom of the rear cover plate 312 of the volute casing 31 and the second clamping surface 3121 for matching with the second clamping portion 423 are inclined and gradually inclined forwards from top to bottom, and an included angle theta 2 is formed between the inner side surfaces of the second clamping surface 3121 and the second clamping portion 423 close to the second clamping surface 3121, and theta 1>2 is satisfied; θ 2 >2 °, see fig. 2, 8-1, and 8-2. Therefore, a certain included angle is formed between the volute bracket 42 and two sides of the volute casing 31, and the fastening force applied to the volute casing 31 by the volute bracket 42 in the screwing process can be continuously increased.

The included angle between the first clamping portion 422 of the volute casing support 42 and the first side surface 4211 of the support body 421 is phi 1, the included angle between the second clamping portion 423 and the first side surface 4211 of the support body 421 is phi 2, and the included angle phi 1 is satisfied>90 degrees and phi 2 is more than 90 degrees. This ensures that the tightening screw 44 applies a force F to the volute bracket 42_{Screw thread}The inner component force perpendicular to the inclined planes can play a role in fastening when the inclined planes perpendicular to the left side and the right side of the volute are provided with the inward component force perpendicular to the inclined planes.

The surface of the cross beam 41 close to the bracket body 421 needs to be parallel to the inclination of the second side 4212 of the bracket body 421 of the volute bracket 42, so that it can be ensured that the force applied to the volute bracket 42 by the fastening screw 44 can be perpendicular to the volute bracket 42, and thus the volute bracket 42 is stable in the upward movement process. And in order to ensure that the volute bracket 42 can play a role in optimizing the oil path, the inclination angle of the bracket body 421 relative to the horizontal plane is greater than 12.5 °, and therefore the inclination angle of the upper surface of the cross beam 41 is also greater than 12.5 °.

During transportation, the fastening screw 44 is screwed up, so that the volute bracket 42 is pushed up, the first clamping portion 422 and the front cover plate 311 are clamped, the second clamping portion 423 and the rear cover plate 312 are clamped, the return spring 45 is compressed, and the fan 3 and the casing 2 are fixedly connected. After the range hood is hung on a wall and installed, the fastening screw 44 is unscrewed, and the volute bracket 42 is subjected to the reset force F of the reset spring 45_BulletFinally clings to the surface of the cross beam 41 and is separated from the volute 31, see fig. 6, fig. 7, fig. 9-1 and fig. 9-2. When the range hood works, the fan 3 can be ensured to be in a suspended state, the resonance of the fan can not be transmitted to the box body 2, and the range hood can be ensuredThe whole machine does not resonate any more, and the risk of abnormal sound is reduced.

The volute bracket 42 may now be used for oil path optimization as indicated by the arrow in figure 6. The oil at the lower end of the volute 31 is dropped on the volute bracket 42 and then flows out from the oil leakage hole 425 at the lowest part of the volute bracket 42. The position of the oil leakage hole 425 can be adjusted by adjusting the structure of the volute bracket 42, and oil can be ensured to drip to a target position.

Fastening screw 44 through with fan mounting structure 4 screws, can guarantee that spiral case 31 can obtain powerful support in the transportation, after the complete machine installation is accomplished, unscrews fan mounting structure 4's fastening screw 44, and fan 3 can get into unsettled state, avoids machine and fan 3 direct contact to produce resonance abnormal sound.