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Fresh air purifier with noise reducing function

A technology of purifiers and noise reducers, which is applied in the fields of noise suppression, ventilation systems, space heating and ventilation, etc., and can solve the problems of increased product appearance and size

Inactive Publication Date: 2018-05-11
SUZHOU GLANCETECH PHOTOELECTRIC SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For fresh air fans, since the fan rotates to generate air volume circulation, the noise problem is also accompanied. In order to increase the air volume, it is often necessary to increase the motor speed. Increase the size of the product

Method used

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  • Fresh air purifier with noise reducing function
  • Fresh air purifier with noise reducing function
  • Fresh air purifier with noise reducing function

Examples

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Effect test

Embodiment 1

[0021] An embodiment of the fresh air purifier of the present invention, the structure is as Figure 1-3 As shown, its structure includes: casing 1, the interior of above-mentioned casing 1 is air duct 101, is provided with fan 2 in above-mentioned air duct 101, and above-mentioned fan 2 is the noise source of purifier, and the open end of above-mentioned air duct 101 is The air outlet 102 is provided with at least one noise reducer 3 between the air outlet 102 and the fan 2 , and the placement direction of the noise reducer 3 is parallel to the air outlet direction.

[0022] The distance between the above-mentioned noise reducer 3 and the above-mentioned fan 2 is 3-10 cm, and the above-mentioned noise reducer 3 includes a signal microphone and a HIFI speaker. Wherein, the signal microphone is arranged near the fan end, and the HIFI speaker is arranged near the air outlet. The cross-sectional area of ​​the noise reducer near the fan end is smaller than the cross-sectional are...

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Abstract

The invention discloses a fresh air purifier with a noise reducing function. The fresh air purifier comprises a shell; the internal of the shell is an air way; a fan is arranged in the air way; an opening end of the air way is an exhaust port; at least one noise reducer is arranged between the exhaust port and the fan; the noise reducers are arranged at the bottom of a filter screen; and the filter screen is arranged in the exhaust port. At least one noise reducer is arranged in the air way; the noise reducers are placed behind the fan which serves as a noise source; in a position from the back end of the fan by 3-10 cm, the front surfaces of the noise reducers are signal microphones; the signal microphones are towards the noise source for collecting and analyzing the phase and the vibration amplitude of the noise; the reverse surfaces of the noise reducers are HIFI horns; the HIFI horns emit sound waves with opposite phases and identical vibration amplitudes with wind noise; the placing directions of the noise reducers are parallel to the exhaust direction; and reverse sound waves generated by the noise reducers are neutralized with forward sound waves generated by self rotation of the fan to finally reduce the sound to achieve the noise lowering effect.

Description

technical field [0001] The invention relates to the field of fresh air purification devices, in particular to a fresh air purifier with a noise reduction function. Background technique [0002] The fresh air draws in fresh air from the outside, and is matched with the preset filter in the whole machine to achieve the purpose of indoor filtration and increase the oxygen content. For fresh air fans, since the fan rotates to generate air volume circulation, the noise problem is also accompanied. In order to increase the air volume, it is often necessary to increase the motor speed. Increase the appearance size of the product. Therefore, it is necessary to reduce the noise at the technical level of the fresh air purifier. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a fresh air purifier with a noise reduction function. A sound processor is added to the fresh air purifier. Partially neutralizes and ultimately re...

Claims

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Application Information

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IPC IPC(8): F24F7/007F24F13/06F24F13/24F24F13/28
CPCF24F7/007F24F13/06F24F13/24F24F13/28
Inventor 余辉林佳源
Owner SUZHOU GLANCETECH PHOTOELECTRIC SCI & TECH CO LTD
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