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Range hood, and double-fan system and negative-pressure drainage structure thereof

A technology of negative pressure drainage and double blowers, which is applied in the direction of oil fume removal, machines/engines, mechanical equipment, etc., can solve the problems of not considering the airflow direction of the two blowers, and the smoking effect of the double blower system is poor, so as to achieve good smoking effect, Optimize the effect of smoking and increase the effect of exhaust air volume

Inactive Publication Date: 2019-03-05
BSH ELECTRICAL APPLIANCES JIANGSU +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the design of the dual-fan structure of the existing range hood does not take into account the airflow direction between the two fans, and unreasonable structural design will lead to poor smoking effect of the entire dual-fan system

Method used

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  • Range hood, and double-fan system and negative-pressure drainage structure thereof
  • Range hood, and double-fan system and negative-pressure drainage structure thereof
  • Range hood, and double-fan system and negative-pressure drainage structure thereof

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Embodiment Construction

[0051] Those skilled in the art understand that, as mentioned in the background art, existing range hoods gradually adopt a double fan structure in order to obtain greater exhaust air volume and optimize the smoking effect of the range hood. For example, in the existing dual-fan system, both the upper fan and the lower fan of the dual-fan system can use centrifugal fans; For another example, the upper fan of the dual fan system may be a centrifugal fan, and the lower fan may be a cross-flow fan; for another example, the dual fan system may also be a centrifugal fan and a cross-flow fan sharing one motor.

[0052] However, these dual-fan systems adopted in the prior art do not consider the airflow direction between the two fans, and unreasonable structural design is likely to cause the smoking effect of the entire system to deteriorate. Smoking effects negatively.

[0053] In order to solve the above technical problems, the technical solution of the embodiment of the present i...

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Abstract

The invention provides a range hood, and a double-fan system and a negative-pressure drainage structure thereof. The double-fan system comprises a first fan and a second fan, wherein the air inlet ofthe first fan communicates with the inlet of the range hood; the air outlet of the second fan communicates with the outlet of the range hood; the double-fan system also comprises the negative-pressuredrainage structure; the air flow flowing out from the air outlet of the first fan passes through the negative-pressure drainage structure to flow into the air inlet of the second fan; the negative-pressure drainage structure comprises a negative-pressure pressurizing part and a static-pressure forming part; the outlet of the negative-pressure pressurizing part communicates with the inlet of the static-pressure forming part; the air flow flowing out from the air outlet of the first fan flows into the negative-pressure pressurizing part; and the air flow flowing out from the static-pressure forming part enters the air inlet of the second fan. Thus, the range hood provided by the invention has the advantages of good smoke-absorbing effect, low energy consumption and small noise, and can effectively reduce the loss of the air flow during circulation of the air flow between two fans.

Description

technical field [0001] The invention relates to the technical field of range hoods, in particular to a range hood, a dual fan system, and a negative pressure drainage structure. Background technique [0002] In order to increase the displacement, more and more range hoods begin to adopt a double fan structure. However, the design of the dual fan structure of the existing range hood does not consider the direction of the airflow between the two fans, and unreasonable structural design will lead to the deterioration of the smoking effect of the entire dual fan system. Contents of the invention [0003] The technical problem solved by the embodiments of the present invention is how to optimize the air flow channel between the two fans in the dual fan system, so as to improve the smoking effect of the range hood. [0004] In order to solve the above technical problems, the present invention provides a dual fan system for range hoods, including a first fan and a second fan, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20F04D29/28
CPCF04D29/281F24C15/20
Inventor 邹庆强王慧姚庆辉
Owner BSH ELECTRICAL APPLIANCES JIANGSU
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