Breathing machine and blower fan noise reduction device thereof

A ventilator and blower technology, applied in the field of ventilators, can solve the problems of high noise, achieve low wind resistance, reduce friction noise and impact noise, and facilitate assembly

Pending Publication Date: 2018-05-22
深圳市大雅医疗技术有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a ventilator fan noise reduction device an

Method used

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  • Breathing machine and blower fan noise reduction device thereof
  • Breathing machine and blower fan noise reduction device thereof
  • Breathing machine and blower fan noise reduction device thereof

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[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] Such as figure 1 As shown, the fan noise reduction device that can be used in a ventilator provided by the present invention includes an upper shell 1, a fan shock-absorbing sleeve 3, a lower shell 4 and an air outlet rectifying device 5. The centrifugal fan 2 of the ventilator is installed in the fan shock-absorbing sleeve 3, the fan shock-absorbing sleeve 3 is clamped between the upper shell 1 and the lower shell 4, and the air outlet rectifying device 5 is installed on the upper shell 1 and The air outlet formed by the cooperation of the lower shell 4 is positioned by a slot and locked by a screw. The fan shock-absorbing sleeve 3 is arranged between the upper shell 1 and the lower shell 4 to isolate the cavity formed by the up...

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Abstract

The invention discloses a breathing machine and a blower fan noise reduction device thereof. The breathing machine comprises an upper housing, a blower fan damping sleeve, a lower housing, and an airoutlet rectifying device. A centrifugal fan of the breathing machine is arranged in the blower fan damping sleeve. The blower fan damping sleeve is clamped between the upper housing and the lower housing. The air outlet rectifying device is arranged on an air outlet of the centrifugal fan. The blower fan damping sleeve is arranged between the upper housing and the lower housing and divides a cavity formed by the upper housing and the lower housing into an upper cavity and a lower cavity. The upper cavity is a first static pressure cavity. The lower cavity is a second static pressure cavity. The noise reduction device can reduce about 8 dB(A) noise of the centrifugal fan, and is characterized by low windage resistance, easy mold opening, convenient assembly, high reliability, and good shockabsorption effect.

Description

technical field [0001] The invention relates to a ventilator, in particular to a ventilator and a fan noise reduction device thereof. Background technique [0002] Noise is an important indicator of the ventilator. The lower the noise of the ventilator, the more conducive it is for the user to fall asleep at night. The fan is the only power component in the ventilator, and it is also the main source of noise. It can be seen that it is very necessary to design an effective fan noise reduction device. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] The object of the present invention is to provide a ventilator blower fan noise reduction device and a ventilator using the device, aiming to solve the problem of high noise in the existing ventilator. [0005] Technical scheme of the present invention is as follows: [0006] A fan noise reduction device for a ventilator, which includes an upper shell, a fan shock ...

Claims

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Application Information

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IPC IPC(8): F04D29/66F04D29/42F04D29/44F04D29/02
CPCF04D29/663F04D29/023F04D29/4226F04D29/441F04D29/665F04D29/667F04D29/668
Inventor 夏聪
Owner 深圳市大雅医疗技术有限公司
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