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] The invention relates to a range hood. Background Art

[0002] At present, the prior art, Chinese invention patent application 202210411395.9, a low-noise range hood, includes a range hood body and a wind cabinet arranged on the range hood body, a muffler volute is fixedly installed in the wind cabinet, the muffler volute includes a volute body and a damping layer arranged on the inner wall of the volute body, a plurality of baffles are arranged on the volute body, and the plurality of baffles are rotatably connected to the volute body through a connecting assembly, a noise reduction plate is arranged in the wind cabinet, and the volute body is connected to a smoke exhaust pipe at the air outlet extending to the outside of the wind cabinet, and a smoke filter plate is arranged in the smoke exhaust pipe. The wind cabinet (2) is fixedly connected by four panels (21) by screws, and a noise reduction plate (22) is fixed on one side of each panel (21) close to the volute body (34), and a plurality of noise reduction holes (23) are opened on the noise reduction plate (22). The problems are: complex structure and high cost.

[0003] Chinese Patent 201921111593.3, a noise reduction range hood, the range hood body is provided with a wind cabinet assembly, a volute assembly and a silencer assembly for actively eliminating noise, the wind cabinet assembly is assembled on the range hood body, the volute assembly is arranged in the wind cabinet assembly, the volute assembly is provided with an air inlet, the silencer assembly is arranged in the wind cabinet assembly and faces the air inlet of the volute assembly, the wind cabinet assembly is provided with a wind cabinet front sealing plate, the wind cabinet front sealing plate is arranged on the front of the wind cabinet assembly, the silencer assembly is arranged on the side opposite to the wind cabinet front sealing plate and the volute assembly, the silencer assembly is provided with silencer cotton and a silencer plate, the silencer plate is fixedly connected to the wind cabinet front sealing plate, and the silencer cotton is located between the wind cabinet front sealing plate and the silencer plate. Summary of the invention

[0004] The purpose of the present invention is to provide a sound-absorbing and noise-reducing wind cabinet, which has the characteristics of simple structure, convenient manufacture and sound-absorbing and noise-reducing.

[0005] The present invention is implemented as follows: a sound-absorbing and noise-reducing wind cabinet, which is special in that it includes a wind cabinet body, a decorative enclosure, a sound-absorbing and noise-reducing cover plate, a fan and a check valve,

[0006] The wind 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; the side wall panels and the rear wall panels of the wind cabinet body are provided with cabinet sound-absorbing and noise-reducing areas integrally formed therewith.

[0007] The fan includes a front volute, a rear volute, a shroud, a motor and a centrifugal wind wheel;

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

[0009] The fan is fixed on the motor base, the silencer and noise reduction cover is snap-fitted with the front opening and is detachable, the check valve is arranged on the top plate of the wind cabinet body and is connected with the air outlet of the fan, and the decorative enclosure wraps the front wall plate and the side wall plate of the wind cabinet body.

[0010] The special feature of the sound-absorbing and noise-reducing wind cabinet is that the sound-absorbing and noise-reducing cover plate is made of sound-absorbing cotton or glass fiber.

[0011] The special feature of the sound-absorbing and noise-reducing wind cabinet is that the sound-absorbing and noise-reducing cover plate 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 evenly distributed concave and convex surfaces.

[0012] The special feature of the sound-absorbing and noise-reducing wind cabinet is that a sound-absorbing cavity convex to the inner surface and having an outer opening is provided on the side wall plate and the rear wall plate of the wind cabinet body, and the sound-absorbing and noise-reducing area of ​​the cabinet is provided on the bottom plate of the sound-absorbing cavity and is composed of evenly distributed concave and convex surfaces.

[0013] The special feature of the sound-absorbing and noise-reducing wind cabinet is that a flow-guiding and sound-absorbing protrusion which is convex from the outer surface to the inner surface is provided on the fan enclosure.

[0014] The special feature of the sound-absorbing and noise-reducing wind cabinet is that the air outlet interface includes a connecting cavity, an interface portion and a silencer tube arranged in the interface portion, the diameter of the connecting cavity portion is larger than the diameter of the interface portion, and the gap between the silencer tube and the interface portion constitutes a smoke pipe insertion groove.

[0015] The special feature of the sound-absorbing and noise-reducing wind cabinet is that the upper part of the silencer tube is closed and wave-shaped.

[0016] A range hood is special in that it comprises the above-mentioned sound-absorbing and noise-reducing wind cabinet.

[0017] The invention discloses a sound-absorbing and noise-reducing wind cabinet, which adopts a sound-absorbing and noise-reducing cover plate, and arranges a sound-absorbing and noise-reducing cabinet area on a wind cabinet body wall plate and is integrally formed. Compared with the prior art, the structure is simplified and the assembly is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the present invention.

[0019] Figure 2 yes Figure 1 A-A view of.

[0020] Figure 3 It is one of the three-dimensional exploded views of the present invention.

[0021] Figure 4 It is the second of the three-dimensional exploded diagrams of the present invention.

[0022] Figure 5It is three-dimensional exploded view of the present invention.

[0023] Figure 6 It is a three-dimensional diagram of the fan of the present invention.

[0024] Figure 7 It is a cross-sectional view of the check valve of the present invention.

[0025] Figure 8 It is a three-dimensional exploded view of the check valve of the present invention.

[0026] Fig. 9 It is a three-dimensional diagram of the check valve of the present invention.

[0027] Fig.10 It is a three-dimensional diagram of the range hood of the present invention. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example 1

[0031] like Figure 1 , Figure 2 As shown, a sound-absorbing and noise-reducing wind cabinet 1 comprises a wind cabinet body 2, a decorative panel 3, a sound-absorbing and noise-reducing cover plate 4, a fan 5 and a check valve 6.

[0032] The wind cabinet body 2 includes 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 to the front wall of the wind cabinet body, and the front opening is connected to the motor seat 21. The side wall and rear wall of the wind cabinet body 2 are provided with a cabinet silencing and noise reduction area 22 integrally formed therewith.

[0033] The fan 5 includes a front volute (not marked), a rear volute, a shroud 51, a motor and a centrifugal wind wheel. The structure of the fan is a well-known technology and is only briefly described.

[0034] The check valve 6 includes a valve body 61, a valve core 62 and an air outlet interface 63, and the valve core 62 includes a rotating shaft 621 and a semicircular core plate 622, which is a known technology, and is disclosed in Chinese Patent 201820042694.9, Invention Name: A Check Valve and Smoke Pipe Assembly for a Range Hood;

[0035] The fan 5 is fixed on the motor base 21, the sound-absorbing and noise-reducing cover plate 4 is snap-fitted with the front opening and is detachable, the check valve 6 is arranged on the top plate of the wind cabinet body 2 and is connected with the air outlet of the fan 5, and the decorative enclosure 3 wraps the front wall plate and the side wall plate of the wind cabinet body 2.

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

[0037] The present invention can also be implemented as follows: the sound-absorbing and noise-reducing cover plate 4 includes a metal substrate and a cover sound-absorbing and noise-reducing area arranged on the metal substrate, and the cover sound-absorbing and noise-reducing area is composed of evenly distributed concavities and convexities.

[0038] As a further improvement of the present invention: the side wall and rear wall of the wind cabinet body 2 are provided with a muffler cavity 23 which is convex to the inner surface and has an outer opening, and the cabinet muffler and noise reduction area 22 is provided on the bottom plate of the muffler cavity 23 and is composed of evenly distributed concave and convex surfaces. The decorative enclosure 3 covers the muffler cavity 23 on the side wall, and the muffler cavity 23 on the rear wall is opposite to the wall;

[0039] As a further improvement of the present invention: Figure 2 , Figure 3 , Figure 6 As shown, the enclosure 51 of the fan 5 is provided with a flow-guiding and silencer protrusion 511 which is convex from the outer surface to the inner surface.

[0040] like Figure 7 , Figure 8 , Fig. 9 As shown, the air outlet interface 63 includes a connecting cavity 631, an interface portion 632 and a silencer 633 disposed in the interface portion. The diameter of the connecting cavity 632 is larger than the diameter of the interface portion 632. The gap between the silencer 633 and the interface portion 632 constitutes a smoke pipe insertion groove 634. When working, Figure 7 As shown, the valve core 62 on the left rotates clockwise, and the valve core 62 on the right rotates counterclockwise, and the semicircular core plate extends into the silencer 633. The semicircular core plate 622 and the silencer 633 work together to achieve sound insulation and noise reduction.

[0041] As a further improvement of the present invention: the upper portion of the silencer 633 is closed and wavy; or the silencer 633 is a spherical curved surface with a closed upper end and a wavy shape.

[0042] Example 2

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

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

Claims

1. A sound-absorbing and noise-reducing wind cabinet, characterized in that: It includes the wind cabinet body, decorative panels, noise reduction cover, fan and check valve. The wind 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; the side wall panels and the rear wall panels of the wind cabinet body are provided with cabinet sound-absorbing and noise-reducing areas integrally formed therewith. The fan includes a front volute, a rear volute, a shroud, a motor and a centrifugal wind wheel; The check valve includes a valve body, a valve core and an air outlet interface; The fan is fixed on the motor base, the silencer and noise reduction cover is snap-fitted with the front opening and is detachable, the check valve is arranged on the top plate of the wind cabinet body and is connected with the air outlet of the fan, and the decorative enclosure wraps the front wall plate and the side wall plate of the wind cabinet body.

2. The sound-absorbing and noise-reducing wind cabinet according to claim 1, characterized in that: The sound-absorbing and noise-reducing cover plate is made of sound-absorbing cotton or glass fiber.

3. The sound-absorbing and noise-reducing wind cabinet according to claim 1, characterized in that: The sound-absorbing and noise-reducing cover plate comprises a metal substrate and a cover sound-absorbing and noise-reducing area arranged on the metal substrate, and the cover sound-absorbing and noise-reducing area is composed of evenly distributed concavities and convexities.

4. The sound-absorbing and noise-reducing wind cabinet according to claim 1, characterized in that: The side wall panels and the rear wall panels of the wind cabinet body are provided with a silencer cavity which is convex to the inner surface and has an outer opening; the cabinet silencer and noise reduction area is provided on the bottom plate of the silencer cavity and is composed of evenly distributed concave and convex surfaces.

5. The sound-absorbing and noise-reducing wind cabinet according to claim 1, characterized in that: The fan enclosure is provided with a flow-guiding and sound-absorbing protrusion which is convex from the outer surface to the inner surface.

6. The sound-absorbing and noise-reducing wind cabinet according to claim 1, characterized in that: The air outlet interface comprises a connecting cavity, an interface portion and a silencer arranged in the interface portion. The diameter of the connecting cavity is larger than the diameter of the interface portion, and the gap between the silencer and the interface portion constitutes a smoke pipe insertion groove.

7. The sound-absorbing and noise-reducing wind cabinet according to claim 6, characterized in that: The upper part of the silencer is closed and wave-shaped.

8. A range hood, characterized in that: It comprises a sound-absorbing and noise-reducing wind cabinet as described in any one of claims 1 to 7.

Images