CN219366400U - Shell with noise reduction function and range hood - Google Patents

Abstract

The utility model relates to the technical field of oil smoke purification, in particular to a shell with a noise reduction function and a range hood. The shell with the noise reduction function comprises a shell component, an upper end cover component and a lower end cover component, wherein the shell component comprises a shell and a first noise reduction component which is arranged in the shell and surrounds the periphery of an impeller of the fan, the shell is of a shell-shaped structure with two open ends, the upper end cover component and the lower end cover component are detachably connected to the upper end opening and the lower end opening of the shell, the first noise reduction component comprises a first pore plate and first noise reduction cotton which is adhered to the first pore plate, the pore plate can serve as an installation supporting foundation of the noise reduction cotton, and can guide flowing air to improve the noise reduction effect by matching with the noise reduction cotton so as to meet the noise reduction requirement of a user and improve user experience.

Description

Shell with noise reduction function and range hood

Technical Field

The utility model relates to the technical field of oil smoke purification, in particular to a shell with a noise reduction function and a range hood.

Background

A large amount of oil smoke is usually generated during cooking, and particularly when people eat hot pot or barbecue, the cooking environment and dining environment of people are seriously affected by the large amount of oil smoke. The range hood is used as an important electrical appliance for improving the environment in a kitchen or a restaurant, and achieves the function of purifying indoor air by sucking and exhausting cooking fume in the kitchen.

The range hood generally comprises a shell and a fan, wherein the fan is arranged in the shell, and negative pressure can be generated in the shell when the fan works, so that the effect of sucking indoor lampblack is achieved. However, the fan produces loud sounds when in operation, so that the environment in a kitchen or a restaurant is noisy, and the cooking and dining experience of a user is affected.

In the prior art, in order to reduce the noise of fan during operation, can set up the guide plate in the casing of range hood generally, utilize the guide plate to lead the oil smoke of fan suction, can reduce the noise of range hood to a certain extent. However, the noise reduction effect of the baffle is general and cannot meet the noise reduction requirement of the user.

Therefore, there is a need for a housing with noise reduction function to solve the above problems.

Disclosure of Invention

The first object of the present utility model is to provide a housing with noise reduction function, which can improve the noise reduction effect on a range hood, meet the noise reduction requirement of a user, and improve the user experience.

The second object of the present utility model is to provide a range hood, which can meet the noise reduction requirement of a user and improve the user experience by applying the housing with the noise reduction function.

In order to achieve the above object, the following technical scheme is provided:

in a first aspect, a housing with noise reduction function is provided for a range hood, the range hood including a fan, the housing with noise reduction function including:

the shell assembly comprises a shell and a first noise reduction assembly, the shell is of a shell-shaped structure with two open ends, the first noise reduction assembly comprises a first pore plate and first noise reduction cotton attached to the first pore plate, and the first noise reduction assembly is arranged on the inner side wall of the shell and surrounds the periphery of an impeller of the fan;

the upper end cover assembly is covered on the first end opening of the shell;

and the lower end cover assembly is covered on the second end opening of the shell.

As an alternative scheme of the shell with the noise reduction function, the upper end cover assembly comprises an upper grille cover, an upper cover and a second noise reduction assembly, the upper grille cover is detachably covered on the first end opening of the shell, the upper cover is detachably fixed on the upper grille cover, and the second noise reduction assembly is arranged between the upper grille cover and the upper cover.

As an alternative scheme of the shell with the noise reduction function, the upper grille cover comprises a grille area and a mounting area, mounting protrusions are arranged in the mounting area, and mounting holes matched with the mounting protrusions are formed in the upper grille cover.

As an alternative scheme of the shell with the noise reduction function, a first avoidance hole for the installation protrusion to pass through is formed in the second noise reduction assembly.

As an alternative scheme of the shell with the noise reduction function, a positioning protrusion is arranged on one surface of the upper grille cover facing the shell, and a notch matched with the positioning protrusion is arranged on the first noise reduction component.

As the alternative scheme of the shell with the noise reduction function, the lower end cover assembly comprises a lower grille cover and a third noise reduction assembly, a limiting end face is arranged in the shell, the lower grille cover is detachably arranged on the limiting end face, and the third noise reduction assembly is arranged between the lower grille cover and the limiting end face.

As the alternative scheme of the shell with the noise reduction function, the lower end cover assembly further comprises a guide cover, the guide cover is arranged between the third noise reduction assembly and the lower grille cover, the guide cover is detachably arranged on the limiting end face, and the lower grille cover is detachably arranged on the guide cover.

As the alternative scheme of the casing with the noise reduction function, the air guide sleeve is provided with a groove component, the groove component comprises an arc-shaped groove and a clamping groove arranged at the end part of the arc-shaped groove, the lower grille cover is provided with a turnbuckle, and the turnbuckle can penetrate through the arc-shaped groove and rotate along the arc-shaped groove, so that the hook part of the turnbuckle can be clamped into the clamping groove.

As an alternative to the housing having the noise reduction function, the second noise reduction assembly includes a second orifice plate and a second noise reduction cotton attached to the second orifice plate.

As an alternative to the housing having the noise reduction function, the third noise reduction assembly includes a third orifice plate and third noise reduction cotton attached to the third orifice plate.

In a second aspect, a range hood is provided, including the housing with noise reduction function.

Compared with the prior art, the utility model has the beneficial effects that:

the shell with the noise reduction function comprises a shell component, an upper end cover component and a lower end cover component, wherein the shell component comprises a shell and a first noise reduction component which is arranged in the shell and surrounds the periphery of an impeller of a fan, the shell is of a shell-shaped structure with two open ends, the upper end cover component and the lower end cover component are detachably connected to the upper end opening and the lower end opening of the shell, the first noise reduction component comprises a first pore plate and first noise reduction cotton attached to the first pore plate, the pore plate can serve as an installation support foundation of the noise reduction cotton, and can guide flowing air to improve noise reduction effect by matching with the noise reduction cotton, so that noise reduction requirements of users are met, and user experience is improved.

According to the range hood provided by the utility model, the noise reduction requirement of a user can be met and the user experience is improved by applying the shell with the noise reduction function.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic cross-sectional view of a range hood according to an embodiment of the present utility model;

fig. 2 is an exploded schematic view of a range hood according to an embodiment of the present utility model;

FIG. 3 is a schematic structural view of an upper end cap assembly according to an embodiment of the present utility model;

FIG. 4 is an exploded view of an upper end cap assembly according to an embodiment of the present utility model;

FIG. 5 is an exploded view of a lower end cap assembly provided in an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a view angle of a pod according to an embodiment of the present utility model;

fig. 7 is a schematic structural view of a lower grille cover according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of an assembled lower grille cover and a pod according to an embodiment of the present utility model;

FIG. 9 is a schematic view of another view of a pod according to an embodiment of the present utility model;

fig. 10 is a schematic cross-sectional view of a range hood according to an embodiment of the present utility model.

Reference numerals:

100. a blower; 101. a motor; 102. an impeller; 10. an orifice plate; 20. noise reduction cotton;

1. a housing assembly; 11. a housing; 111. a limiting end face; 112. inserting the bulge; 113. an arc-shaped plate; 12. a first noise reduction assembly; 121. a notch;

2. an upper end cap assembly; 21. an upper grill cover; 211. mounting the bulge; 212. positioning the bulge; 213. a plug-in groove; 22. an upper cover; 221. a mounting hole; 222. a lifting rope column; 23. a second noise reduction assembly; 231. a first avoidance hole;

3. a lower end cap assembly; 31. a lower grill cover; 311. rotating buckle; 312. rib plates; 313. a grip portion; 32. a guide cover; 321. an arc-shaped groove; 322. a clamping groove; 323. sealing grooves; 324. an outer rib plate; 325. a connecting column; 33. a third noise reduction assembly; 331. a second avoidance hole;

4. a filter;

5. a composite filter element.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, the terms "upper," "lower," "left," "right," and the like are used for convenience of description and simplicity of operation based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Kitchen ventilators are commonly used to remove cooking fumes from a cooking or dining environment, providing a user with a good cooking and dining environment.

Fig. 1 shows a schematic cross-sectional view of a range hood according to an embodiment of the present utility model. As shown in fig. 1, the range hood comprises a shell and a fan 100, the fan 100 is installed in the shell, the fan 100 comprises a motor 101 and an impeller 102, the motor 101 is fixed on the shell, and the impeller 102 can rotate under the driving of the motor 101, so that negative pressure can be generated in the shell, and the effect of sucking indoor oil fume is realized.

When the fan 100 is in operation, the rotation of the impeller 102 easily generates noise, so that the cooking environment or dining environment is noisy, and the user experience is affected. In order to solve the above problem, a noise reduction structure may be disposed in the housing, and noise reduction processing for noise generated by rotation of the impeller 102 may be implemented by the noise reduction structure. Optionally, the noise reduction structure includes a hole plate 10 and noise reduction cotton 20, where the hole plate 10 can be used as a mounting support base of the noise reduction cotton 20, and can guide flowing air, and the noise reduction cotton 20 is matched for use, so as to improve noise reduction effect. Illustratively, the noise reduction cotton 20 may be selected from polyester fiber soundproof cotton, high density egg noodles, glass fiber soundproof cotton, and the like.

Continuing to show in fig. 1, the casing includes shell subassembly 1, upper end cover subassembly 2 and lower end cover subassembly 3, and the upper end and the lower extreme of shell subassembly 1 all are equipped with the opening, and upper end cover subassembly 2 and lower end cover subassembly 3 detachably connect in the upper end opening and the lower extreme opening part of shell subassembly 1. In fig. 1, the housing assembly 1 includes a first noise reduction assembly 12, where the first noise reduction assembly 12 is disposed around the impeller 102 of the fan 100; the upper end cover assembly 2 comprises a second noise reduction assembly 23, and the second noise reduction assembly 23 is arranged above the impeller 102 of the fan 100; the lower end cap assembly 3 includes a third noise reduction assembly 33, the third noise reduction assembly 33 being disposed below the impeller 102 of the fan 100. Through the arrangement of the first noise reduction assembly 12, the second noise reduction assembly 23 and the third noise reduction assembly 33, the noise generated during the operation of the fan 100 can be effectively reduced, and the user experience is improved. Of course, in other embodiments, it is also possible to provide only the first noise reduction assembly 12 in the housing assembly 1, or only the second noise reduction assembly 23 in the upper end cap assembly 2, or only the third noise reduction assembly 33 in the lower end cap assembly 3; it is also possible to provide the first noise reduction component 12 and the second noise reduction component 23, or provide the first noise reduction component 12 and the third noise reduction component 33, or provide the second noise reduction component 23 and the third noise reduction component 33, which may be specifically designed according to the structure of the housing and the noise reduction requirement, and will not be illustrated herein.

The first noise reduction assembly 12 comprises a first pore plate and first noise reduction cotton attached to the first pore plate; the second noise reduction assembly 23 comprises a second pore plate and second noise reduction cotton attached to the second pore plate; the third noise reduction assembly 33 includes a third orifice plate and a third noise reduction cotton attached to the third orifice plate.

Fig. 2 shows an exploded view of the range hood provided by the present utility model. As shown in fig. 2 in combination with fig. 1, the housing assembly 1 further includes a housing 11, where the housing 11 is a shell-shaped structure with two open ends, and the first noise reduction assembly 12 is installed on an inner sidewall of the housing 11 and is enclosed on a peripheral side of the impeller 102 of the fan 100. The housing 11 serves as both an exterior housing structure of the range hood and a mounting base for the first noise reduction assembly 12. Preferably, an arc plate 113 is formed in the housing 11, the arc plate 113 is arranged around the periphery of the impeller 102 to form an air duct, and the first noise reduction assembly 12 is fixed on the arc plate 113. The arcuate plate 113 has a guiding effect on the air flow, and can improve the noise reduction effect in cooperation with the first noise reduction assembly 12.

Fig. 3 shows a schematic structural view of the upper end cap assembly 2 according to the embodiment of the present utility model. Fig. 4 shows an exploded view of the upper end cap assembly 2 provided by the present utility model. As shown in fig. 3-4, the upper end cover assembly 2 further includes an upper grill cover 21 and an upper cover 22, the upper grill cover 21 is detachably disposed on the first end opening of the housing 11, the upper cover 22 is detachably fixed on the upper grill cover 21, and the second noise reduction assembly 23 is disposed between the upper grill cover 21 and the upper cover 22. The upper end cover assembly 2 is designed to clamp the second noise reduction assembly 23 by the upper grille cover 21 and the upper cover 22, so that the second noise reduction assembly 23 is convenient to install and position, the upper end cover assembly 2 is convenient to detachably connect with the shell 11, and the upper end cover assembly 2 is fixed on an indoor ceiling or other installation structures through a lifting rope.

As shown in fig. 3 in combination with fig. 2, in order to facilitate the detachable connection between the upper end cover assembly 2 and the housing 11, an inward concave insertion groove 213 is formed on the peripheral side wall of the upper grille cover 21, an insertion protrusion 112 matched with the insertion groove 213 is formed on the inner wall of the housing 11, and the detachable connection between the upper grille cover 21 and the housing 11 is realized through the insertion engagement of the insertion groove 213 and the insertion protrusion 112. Alternatively, the number of the insertion grooves 213 and the insertion protrusions 112 may be the same, which is not limited. Illustratively, 6 insertion grooves 213 are provided on the peripheral side wall of the upper grill cover 21, and 6 insertion protrusions 112 are provided on the inner wall of the housing 11. Of course, in other embodiments, the number of mating grooves 213 and mating projections 112 may be any number from 2 to 18.

As shown in fig. 3 and fig. 2, a positioning protrusion 212 is disposed on a surface of the upper grille cover 21 facing the housing 11, and a notch 121 matching with the positioning protrusion 212 is disposed on the first noise reduction assembly 12. Through the positioning cooperation of the positioning protrusion 212 and the notch 121, the positioning function can be achieved on the first noise reduction assembly 12, and the first noise reduction assembly 12 is prevented from being misplaced under the influence of noise vibration.

As shown in fig. 4, the upper grill cover 21 includes a grill area and a mounting area, and the grill area is provided with grill holes, which can be used as an air outlet of the housing; the mounting region is provided with a mounting protrusion 211 therein, and the upper cover 22 is provided with a mounting hole 221 fitted with the mounting protrusion 211. The mounting protrusion 211 is provided with a threaded hole, and after the upper cover 22 is covered on the mounting area of the upper grille cover 21, the mounting protrusion 211 passes through the mounting hole 221 and is then in threaded connection with the threaded hole through a bolt matching gasket, so that the upper cover 22 and the upper grille cover 21 can be detachably and fixedly connected. Illustratively, the number of mounting projections 211 on the upper grill cover 21 is 6, and the number of mounting holes 221 on the upper cover 22 is 6. In other embodiments, the number of mounting projections 211 and mounting holes 221 may be any number from 2-18.

Illustratively, in fig. 4, the connection portion of the grille region and the mounting region is connected in a stepped manner, the mounting region is sunk toward the inside of the housing 11 with respect to the grille region, and the second noise reduction assembly 23 and the upper cover 22 are both mounted in the mounting region.

In order to avoid the dislocation of the second noise reduction assembly 23 due to noise vibration, the second noise reduction assembly 23 is provided with a first avoidance hole 231 through which the mounting protrusion 211 passes. Through the alternate cooperation of the mounting protrusion 211 and the first avoiding hole 231, the positioning and mounting of the second noise reduction assembly 23 are realized.

In order to facilitate the installation of the range hood on the indoor ceiling or other installation structure, the upper cover 22 is provided with a hanging rope column 222, and the hanging rope column 222 is connected with the hanging rope and then fixedly connected with the indoor ceiling or other installation structure through the hanging rope. In fig. 4, the number of the hoist rope columns 222 is 4, however, the number of the hoist rope columns 222 is not limited to 4, and may be any number of 3 to 9, which is not limited herein.

Fig. 5 shows an exploded view of the lower end cap assembly 3 provided by the present utility model. As shown in fig. 5, the lower end cover assembly 3 includes a lower grille cover 31, and the lower grille cover 31 is provided with grille holes, which can be used as an air inlet of the housing. The housing 11 is provided with a limiting end surface 111, the lower grille cover 31 is detachably mounted on the limiting end surface 111, and the third noise reduction assembly 33 is arranged between the lower grille cover 31 and the limiting end surface 111.

The lower end cover assembly 3 further comprises a guide cover 32, the guide cover 32 is arranged between the third noise reduction assembly 33 and the lower grille cover 31, the guide cover 32 is detachably mounted on the limiting end face 111, and the lower grille cover 31 is detachably mounted on the guide cover 32. Namely, the whole lower end cover assembly 3 is detachably connected with the shell 11 through the air guide sleeve 32, so that the whole lower end cover assembly 3 is dismounted; the lower grille cover 31 is detachably connected with the air guide sleeve 32, so that the lower grille cover 31 in the lower end cover assembly 3 is independently dismounted. So set up, be convenient for dismouting lower end cover assembly 3's whole as required, still only dismouting lower grille cover 31 to the washing and the maintenance of casing are convenient for.

Optionally, the lower grille cover 31 is detachably connected with the air guide sleeve 32 through a rotary buckle. The lower grill cover 31 is provided with a grip portion 313 on a side facing away from the pod 32. The grip 313 facilitates the user to rotate the lower grill cover 31, thereby realizing the rotation and disassembly of the lower grill cover 31. Illustratively, the grip portion 313 is a straight protrusion protruding from a middle position of the lower grill cover 31. Of course, in other embodiments, the holding portion 313 may have other shapes, as long as the user can rotate the lower grill cover 31, which is not illustrated herein. Of course, the lower grille cover 31 may also be detachably fixed to the pod 32 by magnetic attraction.

Fig. 6 shows a schematic view of an angle of the pod 32 according to an embodiment of the present utility model. Fig. 7 shows a schematic structural view of the lower grill cover 31 according to the embodiment of the present utility model. Fig. 8 is a schematic structural diagram of the pod 32 and the lower grille cover 31 according to the embodiment of the present utility model after assembly. As shown in fig. 6-8, the air guide sleeve 32 is provided with a slot assembly, the slot assembly includes an arc slot 321 and a clamping slot 322 arranged at the end of the arc slot 321, the lower grille cover 31 is provided with a turnbuckle 311, and the turnbuckle 311 can pass through the arc slot 321 and rotate along the arc slot 321, so that the hook part of the turnbuckle 311 can be clamped into the clamping slot 322. Illustratively, the number of the groove assemblies and the turnbuckles 311 is 3, 3 groove assemblies are arranged at intervals along the circumference of the air guide sleeve 32, and 3 turnbuckles 311 are arranged at intervals along the circumference of the lower grille cover 31. Of course, in other embodiments, the number of groove assemblies and turnbuckles 311 may be any other number, such as any number between 2-12, without limitation. It should be noted that, the clamping groove 322 is disposed at an end portion of the arc groove 321 in the extending direction, and the clamping groove 322 may be disposed at two ends of the arc groove 321, so that the clamping connection between the turnbuckle 311 and the clamping groove 322 may be realized no matter the lower grille cover 31 is rotated clockwise or counterclockwise. Of course, a clamping groove 322 may be disposed at one end of the arc-shaped groove 321, which will not be described herein.

The turnbuckle 311 comprises a first connecting part, a second connecting part and a hook part, wherein the first connecting part is connected to the lower grille cover 31 and extends towards the direction perpendicular to the surface where the lower grille cover 31 is positioned, the second connecting part is approximately perpendicular to the first connecting part, and the hook part is connected to the second connecting part and extends towards the lower grille cover 31. When the lower grille cover 31 and the air guide sleeve 32 are installed, the turnbuckle 311 firstly penetrates through the arc-shaped groove 321, then the lower grille cover 31 is rotated until the lower grille cover 31 is rotated to be motionless, at the moment, the lower grille cover 31 is opened, and the lower grille cover 31 can move downwards under the action of self gravity, so that the hook part of the turnbuckle 311 is clamped into the clamping groove 322, and the detachable fixed connection of the lower grille cover 31 and the air guide sleeve 32 is realized. When the lower grille cover 31 needs to be detached, the lower grille cover 31 can be pulled up to enable the hook part of the turnbuckle 311 on the lower grille cover 31 to be separated from the clamping groove 322 of the air guide sleeve 32, and then the lower grille cover 31 is rotated until the turnbuckle 311 of the lower grille cover 31 can be taken out, so that the lower grille cover 31 is detached. The turnbuckle 311 is matched with the arc groove 321 and the clamping groove 322, so that the lower grille cover 31 can be conveniently disassembled and assembled, the influence of oil accumulation on the matched part of the turnbuckle 311 and the clamping groove 322 can be reduced, and the stability of detachable connection is ensured.

In order to facilitate the detachable connection of the air guide sleeve 32 and the housing 11, the air guide sleeve 32 is provided with a connecting post 325, the connecting post 325 is provided with a threaded hole, and the housing 11 is provided with a connecting hole in clearance fit with the connecting post 325. Illustratively, the housing 11 is provided with a limiting end surface 111, the limiting end surface 111 is provided with a connecting hole, and the connecting post 325 of the air guide sleeve 32 is inserted into the connecting hole of the limiting end surface 111. The third noise reduction assembly 33 is provided with a second avoidance hole 331 through which the connection post 325 passes.

In order to ensure the tightness of the connection part of the air guide sleeve 32 and the shell 11, an outer rib plate 324 extending towards the shell 11 is arranged on the periphery of the air guide sleeve 32, the outer rib plate 324 can be abutted with the limiting end face 111 of the shell 11, a closed cavity is formed, the sealing effect on the arc-shaped groove 321 and the clamping groove 322 is realized, and the arc-shaped groove 321 and the clamping groove 322 are prevented from being blocked due to greasy dirt deposition. Preferably, the shell 11 is provided with a groove for the outer rib plate 324 to be inserted, and the sealing effect can be further improved through the limit fit between the outer rib plate 324 and the groove. During installation, the outer rib plate 324 of the air guide sleeve 32 is inserted into the groove of the shell 11, the connecting column 325 of the air guide sleeve 32 is inserted into the connecting hole of the shell 11, and then the air guide sleeve 32 is fixed on the shell 11 by using the bolt to match with the gasket.

Fig. 9 shows a schematic view of another angle of the pod 32 according to an embodiment of the present utility model. As shown in fig. 9 and 7, in order to ensure the tightness of the connection part between the lower grill cover 31 and the guide cover 32, a sealing groove 323 is formed on the surface of the guide cover 32 facing the lower grill cover 31, and a groove assembly is formed on the groove bottom surface of the sealing groove 323; a rib plate 312 is arranged on one surface of the lower grille cover 31 facing the air guide sleeve 32, the turnbuckle 311 is arranged on the rib plate 312, and at least part of the rib plate 312 can be inserted into the sealing groove 323. By matching the sealing groove 323 with the rib plate 312, on one hand, the arc-shaped groove 321 and the clamping groove 322 can be sealed, and the arc-shaped groove 321 and the clamping groove 322 are prevented from being blocked by greasy dirt deposition; on the other hand, grease dirt is prevented from accumulating in the seal groove 323, and the stability of the cooperation of the turnbuckle 311 and the groove component is ensured.

When the lower grille cover 31 and the air guide sleeve 32 are installed, the rib plate 312 and the turnbuckle 311 on the lower grille cover 31 are inserted into the sealing groove 323; by rotating the lower grill cover 31 clockwise or counterclockwise so that the turnbuckle 311 is engaged with the arc-shaped groove 321, the turnbuckle 311 passes through the arc-shaped groove 321; then, the lower grille cover 31 is rotated clockwise or anticlockwise until the lower grille cover 31 cannot rotate, at the moment, the hook part of the turnbuckle 311 is positioned right above the clamping groove 322, the lower grille cover 31 is loosened, and the lower grille cover 31 moves downwards under the action of gravity, so that the hook part of the turnbuckle 311 is clamped into the clamping groove 322, and the installation of the lower grille cover 31 and the guide cover 32 is realized.

Illustratively, the seal groove 323 is annular and the rib 312 is annular. Specifically, the seal groove 323 is a continuous annular groove, and the rib 312 is a continuous annular thin plate. Preferably, the rib 312 is in clearance fit with the seal groove 323, and it is preferable to ensure that the rib 312 can just be inserted into the seal groove 323. Of course, in consideration of processing and assembly errors, the groove width of the sealing groove 323 is slightly larger than the thickness of the rib plate 312, so that the rib plate 312 can rotate relative to the sealing groove 323 while the rib plate 312 is matched with the sealing groove 323.

Referring to fig. 9, the lower end cap assembly 3 further includes a filter element 4, and the filter element 4 is connected to and covers the air inlet. When the whole lower end cover assembly 3 is disassembled, the filter element 4 can be conveniently disassembled and replaced. By additionally arranging the filter element 4, the oil smoke can be subjected to preliminary filtration, and the cleaning frequency of the composite filter element 5 in the shell is prolonged. Illustratively, a plurality of clamping convex assemblies are arranged on the periphery of the air inlet on the air guide cover 32, each clamping convex assembly comprises an upper clamping convex and a lower clamping convex, and the filter element 4 is detachably clamped between the upper clamping convex and the lower clamping convex. Of course, the filter element 4 may be connected to the air inlet of the pod 32 by other removable connection methods.

Fig. 10 is a schematic cross-sectional view illustrating an operating state of a range hood according to an embodiment of the present utility model. As shown in fig. 10, when the range hood provided in this embodiment works, the motor 101 drives the impeller 102 to rotate, and the air flow sequentially passes through the grid holes of the lower grid cover 31 and the filter element 4 at the air inlet of the air guide cover 32, enters the housing, then flows upwards after being filtered by the composite filter element 5 at the outer periphery side of the impeller 102, and is discharged from the grid holes of the upper grid cover 21. The secondary filtration of the filter element 4 and the composite filter element 5 realizes the purification of indoor air.

Note that in the description of this specification, a description referring to the terms "one embodiment," "in other embodiments," and the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description is only of the preferred embodiments of the utility model and the technical principles employed. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. A housing with noise reduction function for a range hood, the range hood comprising a fan (100), characterized in that the housing with noise reduction function comprises:

the shell assembly (1) comprises a shell (11) and a first noise reduction assembly (12), wherein the shell (11) is of a shell-shaped structure with openings at two ends, the first noise reduction assembly (12) comprises a first pore plate and first noise reduction cotton attached to the first pore plate, and the first noise reduction assembly (12) is mounted on the inner side wall of the shell (11) and is arranged on the periphery of an impeller (102) of the fan (100) in a surrounding mode;

an upper end cover assembly (2) which is covered on the first end opening of the shell (11);

and the lower end cover assembly (3) is covered on the second end opening of the shell (11).

2. The housing with noise reduction function according to claim 1, wherein the upper end cover assembly (2) comprises an upper grille cover (21), an upper cover (22) and a second noise reduction assembly (23), the upper grille cover (21) is detachably covered on the first end opening of the housing (11), the upper cover (22) is detachably fixed on the upper grille cover (21), and the second noise reduction assembly (23) is arranged between the upper grille cover (21) and the upper cover (22).

3. The housing with noise reduction function according to claim 2, wherein the upper grille cover (21) comprises a grille region and a mounting region, wherein a mounting projection (211) is provided in the mounting region, and wherein the upper cover (22) is provided with a mounting hole (221) which is matched with the mounting projection (211).

4. A housing with noise reduction function according to claim 3, characterized in that the second noise reduction assembly (23) is provided with a first avoidance hole (231) through which the mounting protrusion (211) passes.

5. The housing with the noise reduction function according to claim 2, wherein a positioning protrusion (212) is arranged on one surface of the upper grille cover (21) facing the housing (11), and a notch (121) matched with the positioning protrusion (212) is arranged on the first noise reduction component (12).

6. The housing with noise reduction function according to any one of claims 2-5, wherein the lower end cover assembly (3) comprises a lower grille cover (31) and a third noise reduction assembly (33), a limiting end surface (111) is arranged in the housing (11), the lower grille cover (31) is detachably mounted on the limiting end surface (111), and the third noise reduction assembly (33) is arranged between the lower grille cover (31) and the limiting end surface (111).

7. The housing with noise reduction function according to claim 6, wherein the lower end cover assembly (3) further comprises a guide cover (32), the guide cover (32) is arranged between the third noise reduction assembly (33) and the lower grille cover (31), the guide cover (32) is detachably mounted on the limiting end face (111), and the lower grille cover (31) is detachably mounted on the guide cover (32).

8. The housing with the noise reduction function according to claim 7, wherein the air guide sleeve (32) is provided with a groove assembly, the groove assembly comprises an arc-shaped groove (321) and a clamping groove (322) arranged at the end part of the arc-shaped groove (321), the lower grille cover (31) is provided with a turnbuckle (311), and the turnbuckle (311) can pass through the arc-shaped groove (321) and rotate along the arc-shaped groove (321) so that a hook part of the turnbuckle (311) can be clamped into the clamping groove (322).

9. The housing with noise reduction function according to claim 6, wherein the second noise reduction assembly (23) comprises a second orifice plate and a second noise reduction cotton attached to the second orifice plate; and/or

The third noise reduction assembly (33) comprises a third pore plate and third noise reduction cotton attached to the third pore plate.

10. A range hood comprising a housing having a noise reduction function as claimed in any one of claims 1 to 9.