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Rectifying and noise lowering exhaust hood

A technology of a range hood and a fairing, which is applied in the field of range hoods, can solve the problems of high cost and complicated manufacturing process, and achieve the effects of low cost, noise reduction and smooth airflow.

Pending Publication Date: 2018-02-23
HANGZHOU ROBAM APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to reduce noise, sound-absorbing and shock-absorbing methods are mainly used in the market, and even active noise reduction is used. The production process is complicated and the cost is high.

Method used

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  • Rectifying and noise lowering exhaust hood
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  • Rectifying and noise lowering exhaust hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: This rectifying and noise-reducing range hood mainly includes a check valve 1, an air duct 2, a housing assembly 4, an oil screen 7 and a smoke collection hood 8, and the oil screen 7 is located at the center of the smoke collection hood 8. The upper part of the smoke collecting hood 8 and the oil screen 7 is connected with the shell assembly 4, the air duct 2 is located in the shell assembly 4, the top of the air duct 2 is provided with a check valve 1, the air duct 2 is provided with an impeller 5 and a motor 6, and the impeller The two sides of 5 are provided with air inlet ring 9, and the air inlets on both sides of the inside of air duct 2 are provided with fairing 3, and the motor adopts an inner rotor motor, which is convenient for the assembly of fairing, and the motor shaft is fixedly connected with the wheel disc of the impeller , the fairing extends close to the wheel disc to achieve a more comprehensive fairing effect.

[0030] When the hood is...

Embodiment 2

[0031] Embodiment 2: On the basis of Embodiment 1, the fairing 3 and the air inlet ring 9 are integrally installed on the front panel or the rear panel of the air duct 2 or separately. The fairing 3 is located inside the air duct 2, and covers the front end of the air inlet of the impeller 5, which can protect the impeller, avoid damage to the impeller 5 by flames, foreign objects, oil stains, etc., improve the life of the hood, and keep the impeller 5 clean.

Embodiment 3

[0032] Embodiment 3: On the basis of Embodiment 2, the fairing 3 is conical or cylindrical, and the structure is gradually closed from the outside to the inside. The angle α between the section of the fairing 3 and the axial direction of the motor 6 is 0-60 To rectify and guide the airflow between degrees, the fairing 3 is in the form of holes on both sides or openings on one side.

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Abstract

The invention discloses a rectifying and noise lowering exhaust hood. The rectifying and noise lowering exhaust hood mainly comprises a non-return valve, an air duct, a shell assembly, an oil net anda smoke collecting hood; the oil net is located on the center portion of the smoke collecting hood; the shell assembly is connected above the smoke collecting hood and the oil net; the air duct is located in the shell assembly; the non-return valve is arranged above the air duct; an impeller and a motor are arranged in the air duct; air inflow rings are arranged on the two sides of the impeller; and the positions of air inlets in the air duct are provided with a rectifying cover. According to the rectifying and noise lowering exhaust hood, due to the fact that the rectifying cover is arrangedat the positions of the air inlets of the air duct, local vortexes are reduced, air flow is made smooth, and the overall performance of a smoke machine is improved.

Description

technical field [0001] The invention relates to a range hood structure, in particular to a rectification and noise reduction range hood. Background technique [0002] Range hoods have become one of the necessary kitchen appliances for modern families. However, in the process of the development of range hoods, some users still have very acute pain points. Problems such as excessive noise and difficult cleaning of range hoods still plague users. With the improvement of the quality of life, people have put forward higher requirements for the noise, environmental protection, and easy cleaning of the range hood. [0003] In order to reduce noise, sound absorption and shock absorption are mainly used in the market, and even active noise reduction is used. The production process is complicated and the cost is high. It is rare to reduce noise through rectification, especially at the air inlet of the air duct. Contents of the invention [0004] In view of the above problems, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20
CPCF24C15/2035F24C15/2071
Inventor 任富佳余国成郑桐福孟君杜鹏飞
Owner HANGZHOU ROBAM APPLIANCES CO LTD
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