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Fan and range hood

A fan and air inlet technology, applied in the direction of oil fume removal, machines/engines, mechanical equipment, etc., can solve problems such as obstruction, loud fan noise, and loss of air flow energy

Pending Publication Date: 2019-07-16
QINGDAO HAIER WISDOM KITCHEN APPLIANCE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, because the airflow hits the top of the impeller to generate backflow, it will hinder the process of the airflow to the outside, and the kinetic energy of the airflow will also be lost to a certain extent.
[0005] Therefore, need to propose a kind of blower fan, can solve the problem that the range hood fan noise in the prior art is big

Method used

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Embodiment Construction

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0037] In this embodiment, a fan is provided, and the noise emitted by the fan is lower than that of an unimproved fan. Such as figure 1 As shown, it includes a volute 1 and an impeller 2 , wherein the impeller 2 is located in the volute 1 , and a guide grid 3 is fixedly arranged at the air inlet of the volute 1 . The guide grid 3 is specifically arranged on the outer wall of the volute 1 . An air inlet ring 5 is also arranged between the diversion grid 3 and the volute 1, and a fixing hole 51 is provided on the air inlet ring 5 for passing screws to fix the diversion grid 3 and the air inlet ring 5 together. On volute 1.

[0038] The above-mentioned diversion grid 3 has an integrated ...

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Abstract

The invention relates to the technical field of range hoods, in particular to a fan and a range hood with the fan. The fan comprises a volute and impellers, the impellers are located in the volute, and a diversion grid network used for performing oriented segmentation on air flow is fixedly arranged at an air inlet of the volute. According to the fan and the range hood with the fan, the diversiongrid network is fixedly arranged at the air inlet of the volute and can divide the whole air flow into a plurality of small shares of air flow, the small air flow is guided to fan impeller blades, andthe air flow is discharged outside the range hood through the blades. As the air flow is divided into the shares, the impact of the air flow on the impellers can be reduced, and the air flow flows more smoothly through the diversion.

Description

technical field [0001] The invention relates to the technical field of range hoods, in particular to a fan and a range hood with the fan. Background technique [0002] At present, the commonly used noise control technologies include noise elimination, sound absorption, sound insulation, vibration isolation, damping, etc., which are mainly controlled and processed in terms of noise source, noise transmission path and receiver. The commonly used noise reduction schemes are: (1) replace the ordinary AC motor with a DC variable frequency motor; (2) change the profile of the fan volute to make the gas flow more smoothly; (3) change the structure of the volute tongue to make the The impact of the airflow on the volute tongue is reduced, reducing the generation of noise; (4) Optimizing the structure of the impeller to reduce the generation of eddy current; (5) Using noise-reducing materials to weaken the noise from the sound propagation path. [0003] However, the high cost of noi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/44F04D29/66F24C15/20
CPCF04D29/441F04D29/667F24C15/20
Inventor 陈炬艾希顺牟飞朱明伟
Owner QINGDAO HAIER WISDOM KITCHEN APPLIANCE CO LTD
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