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A small-sized low-noise centrifugal fan and a ventilator using the centrifugal fan

A centrifugal fan and low-noise technology, which is applied in the field of ventilators, can solve the problems of high noise of ventilators, achieve the effects of reducing noise, improving turning angle, and being easy to manufacture

Active Publication Date: 2018-04-13
SHENZHEN DYMIND BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a small-sized low-noise centrifugal fan and a ventilator using the centrifugal fan, aiming to solve the problem of high noise of the existing ventilator

Method used

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  • A small-sized low-noise centrifugal fan and a ventilator using the centrifugal fan
  • A small-sized low-noise centrifugal fan and a ventilator using the centrifugal fan
  • A small-sized low-noise centrifugal fan and a ventilator using the centrifugal fan

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0022] Such as figure 1 As shown, the small low-noise centrifugal fan provided by the present invention, which can be used for ventilators, includes a fan blade 1 , an upper volute 2 and a lower volute 3 . A motor installation cavity 5 is provided at the center of the lower volute 3, in which a DC brushless motor is installed and fixed by screw locking. A through hole 4 is provided on the shaft center of the fan blade 1, and the through hole 4 is used for locking with the protruding shaft of the motor through interference fit. The upper volute 2 and the lower volute 3 are positioned and fastened through the slot, and then assembled by screw locking.

[0023] Such as figure 2 with image 3 As shown, the small centrifugal fan involved...

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Abstract

The invention discloses a small-sized low-noise centrifugal fan and a ventilator using the centrifugal fan. The fan includes fan blades, an upper volute and a lower volute, and a motor installation cavity is arranged in the center of the lower volute, in which a DC A brushless motor is provided with a through hole on the axis of the fan blade, and the through hole is used to cooperate and lock with the extension shaft of the motor; the upper volute and the lower volute are locked and assembled, and the fan The leaf is composed of a plurality of arc-shaped short blades, a plurality of arc-shaped long blades and a base plate, the number of the arc-shaped short blades and the arc-shaped long blades is equal, and they are alternately and uniformly arranged on the base plate. The novel centrifugal blower has the advantages of high performance, low noise, small size, simple structure and easy manufacture.

Description

technical field [0001] The invention relates to a ventilator, in particular to a ventilator equipped with a small-sized low-noise centrifugal blower. Background technique [0002] Household ventilators are usually used on the bedside at night, so the requirements for noise control are very high. The fan is the power-providing component in the ventilator, and it is also the main source of noise. Generally speaking, the larger the diameter of the blades of the fan, the more advantageous it is in terms of noise. However, considering the portability and aesthetics, household ventilators will develop in the direction of miniaturization in the future, leaving less and less space for the fan. Therefore, designing a new centrifugal fan with high performance, low noise and small size is the most fundamental means to solve the problem. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] The object of the present invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/30F04D29/42F04D29/66F04D25/08
Inventor 夏聪
Owner SHENZHEN DYMIND BIOTECH
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