Silencing and noise reduction air cabinet and range hood

Abstract

The noise reduction air cabinet comprises an air cabinet body, a decorative surrounding plate, a noise reduction cover plate, a fan and a check valve, the air cabinet body comprises a front opening and a hollow motor base, and an acute included angle is formed between the motor base and the horizontal plane of the rear portion; the side wall plates and the rear wall plate of the air cabinet body are provided with cabinet noise reduction areas integrally formed with the side wall plates and the rear wall plate. The draught fan comprises a front volute plate, a rear volute plate, a surrounding plate, a motor and a centrifugal wind wheel. The check valve comprises a valve body, a valve element and an air outlet connector. The fan is fixed on the motor base, the noise reduction cover plate is buckled with the front opening and is detachable, the check valve is arranged on the top plate of the air cabinet body and is communicated with an air outlet of the fan, and the decorative coaming wraps a front wall plate and side wall plates of the air cabinet body. The silencing and noise reduction cover plate and the cabinet silencing and noise reduction area on the wall board of the air cabinet body are integrally formed, and compared with the prior art, the structure is simplified, and assembling is convenient.

Description

Technical Field

[0001] This invention relates to a range hood. Background Technology

[0002] The existing technology, Chinese invention patent application 202210411395.9, describes a low-noise range hood, including a range hood body and a fan cabinet mounted on the range hood body. A sound-absorbing volute is fixedly installed inside the fan cabinet. The sound-absorbing volute includes a volute body and a damping layer on the inner wall of the volute body. Multiple baffles are mounted on the volute body, and these baffles are rotatably connected to the volute body via connecting components. A noise-reducing plate is installed inside the fan cabinet. A smoke exhaust pipe is connected to the air outlet extending from the volute body to the outside of the fan cabinet, and an oil fume filter plate is installed inside the smoke exhaust pipe. The fan cabinet (2) is fixedly connected around its perimeter by four panels (21) with screws. Each panel (21) has a noise-reducing plate (22) fixed on its side closest to the volute body (34), and the noise-reducing plate (22) has multiple noise-reducing holes (23). The problem is that the structure is complex and the cost is high.

[0003] Chinese Patent 201921111593.3 discloses a noise-reducing range hood. The main body of the range hood includes a blower assembly, a volute assembly, and a noise-reducing component for actively eliminating noise. The blower assembly is installed in the main body of the range hood, and the volute assembly is located inside the blower assembly. The volute assembly has an air inlet. The noise-reducing component is located inside the blower assembly and faces the air inlet of the volute assembly. The blower assembly has a front sealing plate located on the front of the blower assembly. The noise-reducing component is located on the side opposite the front sealing plate of the volute assembly. The noise-reducing component includes sound-absorbing cotton and a sound-absorbing plate. The sound-absorbing plate is fixedly connected to the front sealing plate of the blower assembly, and the sound-absorbing cotton is located between the front sealing plate and the sound-absorbing plate. Summary of the Invention

[0004] The purpose of this invention is to provide a noise-reducing fan cabinet that is simple in structure, easy to manufacture, and has the characteristics of noise reduction.

[0005] This invention is implemented as follows: a noise-reducing fan cabinet, characterized in that it includes a fan cabinet body, a decorative enclosure, a noise-reducing cover, a fan, and a check valve.

[0006] The blower unit body includes a front opening and a hollow motor base, with the motor base forming an acute angle with the rear horizontal plane; the side and rear walls of the blower unit body are equipped with integrated sound-absorbing and noise-reducing zones.

[0007] The fan includes a front worm gear, a rear worm gear, a surrounding plate, a motor, and a centrifugal impeller;

[0008] The check valve includes a valve body, a valve core, and an air outlet.

[0009] The fan is fixed on the motor base, the sound reduction cover is detachably buckled with the front opening, and the check valve is arranged on the top plate of the air cabinet body and communicates with the air outlet of the fan.

[0010] The sound reduction cover is made of sound reduction cotton or glass fiber.

[0011] The sound reduction cover comprises a metal base plate and a cover sound reduction area arranged on the metal base plate, and the cover sound reduction area is composed of uniformly distributed concave-convex structures.

[0012] The sound reduction cover comprises a metal base plate and a cover sound reduction area arranged on the metal base plate, and the cover sound reduction area is composed of uniformly distributed concave-convex structures.

[0013] The sound reduction cover comprises a metal base plate and a cover sound reduction area arranged on the metal base plate, and the cover sound reduction area is composed of uniformly distributed concave-convex structures.

[0014] The sound reduction cover comprises a metal base plate and a cover sound reduction area arranged on the metal base plate, and the cover sound reduction area is composed of uniformly distributed concave-convex structures.

[0015] The sound reduction cover comprises a metal base plate and a cover sound reduction area arranged on the metal base plate, and the cover sound reduction area is composed of uniformly distributed concave-convex structures.

[0016] The sound reduction cover comprises a metal base plate and a cover sound reduction area arranged on the metal base plate, and the cover sound reduction area is composed of uniformly distributed concave-convex structures.

[0017] The sound reduction cover comprises a metal base plate and a cover sound reduction area arranged on the metal base plate, and the cover sound reduction area is composed of uniformly distributed concave-convex structures. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a sectional view of the present application.

[0019] Figure 2 is the A-A view of Figure 1

[0020] Figure 3 is one of the exploded perspective views of the present application.

[0021] Figure 4 is the second exploded perspective view of the present application.

[0022] Figure 5 ​is a third perspective exploded view of the present application.

[0023] Figure 6 is a perspective view of the fan of the present application.

[0024] Figure 7 is a sectional view of the check valve of the present application.

[0025] Figure 8 is a perspective exploded view of the check valve of the present application.

[0026] Figure 9 is a perspective view of the check valve of the present application.

[0027] Figure 10 is a perspective view of the range hood of the present application. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below with reference to the attached drawings, wherein the same or like reference numerals are used to represent the same or similar elements throughout the several views. The embodiments described below are exemplary, and are not intended to be limiting of the present application.

[0029] In the description of the present application, it is necessary to point out that, unless explicitly defined and limited otherwise, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] Example 1

[0031] As shown in Figure 1 , Figure 2 , a sound-attenuating and noise-reducing air cabinet 1, comprising an air cabinet body 2, a decorative coaming 3, a sound-attenuating and noise-reducing cover plate 4, a fan 5 and a check valve 6,

[0032] The air cabinet body 2 comprises a front opening and a hollow motor seat 21, the motor seat 21 has an acute angle with the horizontal plane at the rear, the motor seat is fixed with the front wall plate of the air cabinet body, and the front opening and the motor seat 21 are in communication; the side wall plate and the rear wall plate of the air cabinet body 2 are provided with a cabinet sound-attenuating and noise-reducing area 22 integrally formed thereon,

[0033] The fan 5 comprises a front volute plate (not labeled), a rear volute plate, a coaming 51, a motor and a centrifugal fan wheel, the structure of the fan is a known technology, and only a brief description is made;

[0034] The check valve 6 comprises a valve body 61, a valve core 62 and an air outlet interface 63, the valve core 62 comprises a rotating shaft 621 and a semicircular core plate 622, which is a known technology disclosed in Chinese Patent 201820042694.9 with the title of a check valve and a smoke pipe assembly of a range hood;

[0035] The fan 5 is fixed on the motor base 21, the sound-absorbing and noise-reducing cover plate 4 is buckled with the front opening and can be detached, the check valve 6 is arranged on the top plate of the air cabinet body 2 and communicates with the air outlet of the fan 5, and the decorative coaming 3 wraps the front wall plate and the side wall plate of the air cabinet body 2.

[0036] As a further improvement of the present application: the sound-absorbing and noise-reducing cover plate 4 is made of sound-absorbing cotton or glass fiber.

[0037] The present application can also be implemented in the following way: the sound-absorbing and noise-reducing cover plate 4 comprises a metal base plate and a cover sound-absorbing and noise-reducing area arranged on the metal base plate, and the cover sound-absorbing and noise-reducing area is composed of uniformly distributed concave-convex structures.

[0038] As a further improvement of the present application: the side wall plate and the rear wall plate of the air cabinet body 2 are provided with sound-absorbing cavities 23 which are convex to the inner surface and have openings on the outer side, and the cabinet sound-absorbing and noise-reducing area 22 is arranged on the bottom plate of the sound-absorbing cavity 23 and is composed of uniformly distributed concave-convex structures. The decorative coaming 3 covers the sound-absorbing cavities 23 on the side wall plate, and the sound-absorbing cavities 23 of the rear wall plate are opposite to the wall.

[0039] As a further improvement of the present application: as shown in Figure 2 、 Figure 3 、 Figure 6 The coaming 51 of the fan 5 is provided with a flow guide sound-absorbing protrusion 511 which is convex from the outer surface to the inner surface.

[0040] As shown in Figure 7 、 Figure 8 、 Figure 9 The air outlet interface 63 comprises a connecting cavity part 631, an interface part 632 and a sound-absorbing cylinder 633 arranged in the interface part, the diameter of the connecting cavity part 632 is larger than that of the interface part 632, and the gap between the sound-absorbing cylinder 633 and the interface part 632 forms a smoke pipe insertion slot 634; as shown in Figure 7 During operation, the left valve core 62 rotates clockwise and the right valve core 62 rotates counterclockwise, the semicircular core plate extends into the sound-absorbing cylinder 633, and the semicircular core plate 622 and the sound-absorbing cylinder 633 jointly realize sound absorption and noise reduction.

[0041] As a further improvement of the present application: the upper part of the sound-absorbing cylinder 633 is closed and in a wavy shape; or the sound-absorbing cylinder 633 is in a spherical curved surface, the upper end is closed and in a wavy shape.

[0042] Embodiment 2

[0043] As shown in Figure 9As shown, a range hood comprises a casing 7 and the sound-attenuating and noise-reducing air cabinet 1 as described above.

[0044] Although embodiments of the present application have been shown and described, it would be appreciated by those skilled in the art that changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A sound attenuating and noise reducing fume cupboard characterised in that: The air cabinet body, the decorative fence, the sound-absorbing cover, the fan and the check valve, The air cabinet body includes a front opening and a hollow motor seat, and the motor seat has an acute angle with the horizontal plane at the rear part; the side wall plate and the rear wall plate of the air cabinet body are provided with a cabinet sound-absorbing area integrally formed thereon, The fan includes a front volute plate, a rear volute plate, a fence, a motor and a centrifugal fan wheel; The check valve includes a valve body, a valve core and an air outlet interface; The fan is fixed on the motor seat, the sound-absorbing cover is detachably buckled with the front opening, the check valve is arranged on the top plate of the air cabinet body and communicates with the air outlet of the fan, and the decorative fence wraps the front wall plate and the side wall plate of the air cabinet body.

2. The sound attenuation and noise reduction air cabinet according to claim 1, wherein: The sound-absorbing cover is made of sound-absorbing cotton or glass fiber.

3. The sound attenuation and noise reduction air cabinet according to claim 1, wherein: The sound-absorbing cover includes a metal base plate and a cover sound-absorbing area arranged on the metal base plate, and the cover sound-absorbing area is formed by uniformly distributed concave-convex structures.

4. The sound attenuation and noise reduction air cabinet according to claim 1, wherein: The side wall plate and the rear wall plate of the air cabinet body are provided with sound-absorbing cavities which are convex to the inner surface and have outer openings, and the cabinet sound-absorbing area is arranged on the bottom plate of the sound-absorbing cavities and is formed by uniformly distributed concave-convex structures.

5. The sound attenuating and noise reducing air cabinet according to claim 1, wherein: The fence of the fan is provided with a flow guide sound-absorbing convex structure which is convex from the outer surface to the inner surface.

6. The sound attenuating and noise reducing air cabinet of claim 1, wherein: The air outlet interface includes a connecting cavity, an interface and a sound-absorbing cylinder arranged in the interface, the diameter of the connecting cavity is larger than that of the interface, and the gap between the sound-absorbing cylinder and the interface forms a smoke pipe insertion slot.

7. The sound attenuating and noise reducing air cabinet according to claim 6, wherein: The upper part of the sound-absorbing cylinder is closed and in a wave shape.

8. A range hood characterized by: The sound-absorbing and noise-reducing air cabinet includes the sound-absorbing and noise-reducing air cabinet according to any one of claims 1-7.

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