CN220269468U - Range hood capable of reducing noise - Google Patents

Abstract

The utility model discloses a range hood capable of reducing noise, which comprises a shell and a fan assembly arranged in the shell, wherein the fan assembly comprises a volute and a wind wheel arranged in the volute, and the volute is provided with an air outlet part; the back side of the shell is provided with a back side air outlet communicated with the air outlet part, and a backing plate for sealing the back side air outlet is detachably fixed at the back side air outlet; the top surface of shell is provided with the top surface air outlet with air-out portion intercommunication, top surface air outlet department is detachably fixed with the apron, be provided with the opening that runs through on the apron, the detachable volute tongue board that is used for guiding the air current to the opening flow that is provided with in the air-out portion. The utility model can reduce the noise of the top surface air outlet during air outlet and improve the air quantity.

Description

Range hood capable of reducing noise

Technical Field

The utility model relates to the technical field of range hoods, in particular to a range hood capable of reducing noise.

Background

The thin type range hood sold in North America mainly has two air outlets, one is provided with a back side air outlet at the back side of the shell, and the other is provided with a top surface air outlet at the top surface of the shell. In order to enhance the adaptability, the conventional thin type range hood is provided with two air outlets, but the top air outlet has larger noise and insufficient air quantity when the air is discharged due to different air duct structures.

Disclosure of Invention

The utility model provides a range hood capable of reducing noise, which can reduce noise when an air outlet of a top surface air outlet is provided, and improve air quantity.

In order to solve the problems, the utility model adopts the following technical scheme:

the embodiment of the utility model provides a range hood capable of reducing noise, which comprises a shell and a fan assembly arranged in the shell, wherein the fan assembly comprises a volute and a wind wheel arranged in the volute, and the volute is provided with an air outlet part; the back side of the shell is provided with a back side air outlet communicated with the air outlet part, and a backing plate for sealing the back side air outlet is detachably fixed at the back side air outlet; the top surface of shell is provided with the top surface air outlet with air-out portion intercommunication, top surface air outlet department is detachably fixed with the apron, be provided with the opening that runs through on the apron, the detachable volute tongue board that is used for guiding the air current to the opening flow that is provided with in the air-out portion.

In some embodiments, the volute tongue plate includes a first guide and a second guide; the first guide part is in butt joint with an arc-shaped surface formed by the inner side surface of the volute, and an extension surface of the arc-shaped surface is formed; the second guide part is used for guiding airflow to flow towards the opening.

In some embodiments, the opening is circular, and the second guide portion is arc-shaped and is adapted to the circular structure of the opening.

In some embodiments, the backing plate includes a base plate detachably secured to the inner sidewall of the housing and a tab connected to the base plate, the tab being inserted into the air outlet.

In some embodiments, the volute tongue plate is removably secured to the backing plate.

In some embodiments, both ends of the volute tongue plate are detachably fixed on the backing plate through screws.

In some embodiments, the opening is rectangular.

In some embodiments, a cannula is provided on the cover plate, the cannula interfacing with the opening.

The utility model has at least the following beneficial effects: the utility model is characterized in that a backing plate for sealing a back air outlet is detachably fixed at the back air outlet, a cover plate is detachably fixed at the top air outlet, a through opening is arranged on the cover plate, and a volute tongue plate for guiding air flow to flow towards the opening is detachably arranged in the air outlet; when a user needs to use the top surface air outlet, the base plate and the volute tongue plate are reserved, the base plate can greatly reduce leakage of air flow from the back side air outlet, the volute tongue plate guides the air flow to flow towards the opening, the air flow is smoother, and therefore noise during air outlet of the top surface air outlet can be reduced, and air quantity is improved.

Drawings

Fig. 1 is a schematic structural view of a range hood with a cover plate separated from a casing according to an embodiment of the present utility model;

fig. 2 is a schematic view of a range hood with a part of a casing removed according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a range hood with a back side air outlet according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the structure of a backing plate and a volute tongue plate according to an embodiment of the utility model;

fig. 5 is a schematic structural view of a range hood with a circular top surface air outlet according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a range hood with a rectangular top air outlet according to an embodiment of the utility model.

Wherein, the reference numerals are as follows:

a housing 100, a top outlet 110, a back outlet 120;

fan assembly 200, volute 210, air outlet 211, wind wheel 220;

cover plate 310, opening 311, cannula 312, check valve 313, backing plate 320, base plate 321, tab 322, volute tongue 330, first guide 331, and second guide 332.

Detailed Description

The following description is provided with reference to the accompanying drawings to assist in a comprehensive understanding of various embodiments of the utility model as defined in the claims and their equivalents. The description includes various specific details to aid in understanding, but these details should be regarded as merely exemplary. Accordingly, those skilled in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the utility model.

In the description of the present utility model, references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

It will be understood that when an element (e.g., a first element) is "connected" to another element (e.g., a second element), the element can be directly connected to the other element or there can be intervening elements (e.g., a third element) between the element and the other element.

Embodiments of the present utility model provide a range hood capable of reducing noise, as shown in fig. 1, 2 and 6, comprising a housing 100 and a fan assembly 200 disposed in the housing 100, wherein the fan assembly 200 comprises a volute 210 and a wind wheel 220 disposed in the volute 210, and the fan assembly 200 naturally further comprises a driver connected to the wind wheel 220, and the driver drives the wind wheel 220 to rotate so as to generate air flow. A part of the scroll casing 210 forms an air outlet portion 211, and the air flow inside the scroll casing 210 is blown toward the air outlet portion 211. The back side of the housing 100 is provided with a back side air outlet 120 communicated with the air outlet 211, and air flow generated by the wind wheel 220 can be blown out from the back side air outlet 120, and a backing plate 320 for sealing the back side air outlet 120 is detachably fixed at the back side air outlet 120 so as to block the back side air outlet 120 and prevent oil smoke from being discharged from the back side air outlet 120. The top surface of the housing 100 is provided with a top surface air outlet 110 communicating with the air outlet 211, and the air flow generated by the wind wheel 220 can be blown out from the top surface air outlet 110.

The top surface air outlet 110 is detachably fixed with a cover plate 310, and the cover plate 310 is provided with an opening 311 penetrating through, and air flow in the air outlet part can be discharged through the opening 311. For different cover plates 310, the size and shape of the opening 311 on the cover plate 310 can be different, and for smoke exhaust pipes with different shapes and sizes, as the cover plate 310 is detachable, the cover plate 310 matched with the smoke exhaust pipe can be replaced, so that the smoke exhaust pipe can be in butt joint with the opening 311 on the cover plate 310, the adaptability of the whole range hood can be further improved, and the range hood can be flexibly matched with various installation environments.

The air outlet 211 is detachably provided with a volute tongue plate 330 for guiding the airflow to flow to the opening 311, and since the volute tongue plate 330 is detachable, the volute tongue plate 330 can be detached when the back air outlet is used, so that the airflow to the back air outlet is not affected.

When the user needs to use the top surface air outlet 110, the pad 320 and the volute tongue plate 330 are reserved, the pad 320 can greatly reduce leakage of air flow from the back side air outlet 120, and the volute tongue plate 330 guides the air flow to the opening 311, so that the air flow is smoother, noise generated when the top surface air outlet 110 is in air outlet can be reduced, and the air quantity is improved. When the user needs to use the back side air outlet 120, as shown in fig. 3, the pad and the volute tongue plate can be detached, and the cover plate 310 without the opening is replaced, so that the cover plate 310 covers the top surface air outlet, and the air flow only flows to the back side air outlet 120.

In some embodiments, the volute tongue 330 includes a first guide 331 and a second guide 332; the first guiding portion 331 is abutted with the arc surface formed by the inner side surface of the volute 310 and forms an extension surface of the arc surface, if the arc surface formed by the inner side surface of the volute 310 is extended, the inner side surface of the first guiding portion 331 forms a part of the arc surface, and the curvature radius of the inner side surface of the first guiding portion 331 and the curvature radius of the inner side surface of the volute 310 can be the same, which is equivalent to extending the length of the volute tongue of the volute 310, so that the air flow blows toward the second guiding portion 332, and the second guiding portion 332 guides the air flow to flow toward the opening 311.

Further, as shown in fig. 2, 4 and 5, the opening is circular, the second guiding portion 332 is arc-shaped and is adapted to the circular structure of the opening, specifically, the center of the arc formed by the second guiding portion 3320 and the center of the opening can be coaxial, and the radius of the arc formed by the second guiding portion 3320 and the radius of the opening can be similar. In this way, the air flow moving along the surface of the second guiding portion 332 can directly blow to the opening, so that the air flow can smoothly flow out of the opening, which is helpful for increasing the air volume.

In some embodiments, as shown in fig. 2 and 5, the base plate 320 includes a base plate 321 and a protrusion 322 connected to the base plate 321, the base plate 321 is detachably fixed on the inner sidewall of the casing 100 to fix the whole base plate 320, and the protrusion 322 is embedded in the air outlet 211, which is equivalent to increasing the thickness of the base plate 320 covering the air outlet on the back side, so as to enhance the sealing performance and reduce the leakage.

In some embodiments, the volute tongue 330 is detachably fixed on the backing plate 320, so that the air duct structure of the volute 210 is not damaged, and smooth airflow is ensured. Specifically, the volute tongue 330 is detachably fixed on the bump 322.

Further, both ends of the tongue plate 330 may be fixed to the backing plate 320 by screws. The screws pass through the backing plate 320 and are then secured into the threaded holes reserved in the lugs 322.

In some embodiments, as shown in fig. 6, the opening 311 is rectangular, such that a rectangular smoke exhaust tube may be used to interface with the opening 311.

In some embodiments, as shown in fig. 5 and 6, a cannula 312 is provided on the cover 310, the cannula 312 interfaces with the opening 311, and the smoke evacuation tube may be directly inserted over the cannula 312 to interface with the opening 311. Furthermore, a check valve 313 may be disposed on the inner side of the cannula 312 to prevent air flow from flowing backward, and also has a certain dustproof protection effect.

In some embodiments, the cover plate 310 may be detachably fixed to the top surface of the case 100 by screws, and the pad 320 may be detachably fixed to the back side surface of the case 100 by screws.

The terms and words used in the above description and claims are not limited to literal meanings but are only used by the applicant to enable a clear and consistent understanding of the utility model. Accordingly, it will be apparent to those skilled in the art that the foregoing description of the various embodiments of the utility model has been provided for illustration only and not for the purpose of limiting the utility model as defined by the appended claims and their equivalents.

Claims (8)

1. A range hood capable of reducing noise is characterized in that: the air conditioner comprises a shell and a fan assembly arranged in the shell, wherein the fan assembly comprises a volute and a wind wheel arranged in the volute, and the volute is provided with an air outlet part; the back side of the shell is provided with a back side air outlet communicated with the air outlet part, and a backing plate for sealing the back side air outlet is detachably fixed at the back side air outlet; the top surface of shell is provided with the top surface air outlet with air-out portion intercommunication, top surface air outlet department is detachably fixed with the apron, be provided with the opening that runs through on the apron, the detachable volute tongue board that is used for guiding the air current to the opening flow that is provided with in the air-out portion.

2. The noise-reducing range hood of claim 1, wherein: the volute tongue plate comprises a first guide part and a second guide part; the first guide part is in butt joint with an arc-shaped surface formed by the inner side surface of the volute, and an extension surface of the arc-shaped surface is formed; the second guide part is used for guiding airflow to flow towards the opening.

3. The noise-reducing range hood according to claim 2, wherein: the opening is circular, and the second guide part is arc-shaped and is matched with the circular structure of the opening.

4. The noise-reducing range hood of claim 1, wherein: the backing plate comprises a bottom plate and a lug connected with the bottom plate, wherein the bottom plate is detachably fixed on the inner side wall of the shell, and the lug is embedded in the air outlet part.

5. The noise-reducing range hood of claim 1, wherein: the volute tongue plate is detachably fixed on the backing plate.

6. The noise-reducing range hood of claim 5, wherein: both ends of the volute tongue plate are detachably fixed on the backing plate through screws.

7. The noise-reducing extractor hood of any of claims 1-6, wherein: the opening is rectangular.

8. The noise-reducing extractor hood of any of claims 1-6, wherein: and the cover plate is provided with an insertion pipe, and the insertion pipe is in butt joint with the opening.