Draught fan outdoor noise lowering device
A fan room and fan technology, applied in space heating and ventilation, household heating, lighting and heating equipment, etc., can solve the problem of increased sound energy and achieve the effect of reducing fan noise
Pending Publication Date: 2018-04-06
重庆丰望环保科技有限公司
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Problems solved by technology
The rear of the outdoor unit of the air conditioner is generally a smooth cement wall, and the outer surface of the smooth inner wall reflects most of the incident sound waves emitted by the noise source to a large extent, resulting in the re-superposition of the reflected sound waves and the incident sound waves resulting in reverberation with increased sound energy noise formation
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[0019] Hereinafter, embodiments of the fan outdoor noise reducing device of the present invention will be described with reference to the accompanying drawings.
[0020] The examples described here are specific specific implementations of the present invention, and are used to illustrate the concept of the present invention. They are all explanatory and exemplary, and should not be construed as limiting the implementation of the present invention and the scope of the present invention. In addition to the embodiments described here, those skilled in the art can also adopt other obvious technical solutions based on the claims of the application and the contents disclosed in the description, and these technical solutions include adopting any obvious changes made to the embodiments described here. Replacement and modified technical solutions.
[0021] The accompanying drawings in this specification are schematic diagrams, which assist in explaining the concept of the present inven...
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The invention discloses a draught fan outdoor noise lowering device. A draught fan comprises an air inlet and an air outlet, and the draught fan is arranged on the top of a building structure. The noise lowering device comprises a silencing wall, a silencer, a silencing top plate and an air inlet silencing inclined plate. The silencing wall is arranged around the draught fan, and a noise loweringarea with the closed periphery is formed around the draught fan. The silencer comprises an air inlet, an air guiding cavity and an air outlet. The silencer is arranged at the upper portion of the airoutlet of the draught fan. The silencing top plate is connected between the silencing wall and the silencer. The air inlet silencing inclined plate is arranged on an opening of the silencing wall andcorresponds to the position of the air inlet. According to the draught fan outdoor noise lowering device, the draught fan is completely surrounded in the relatively-sealed controllable space, and noise generated by the draught fan is prevented from uncontrollably overflowing; the silencing wall is provided with the air inlet silencing inclined plate so that the inclined air inlet can be formed, and the noise of the draught fan is prevented from overflowing at the position of the air inlet; and through the arrangement of the silencer, the noise of the draught fan is further lowered.
Description
technical field [0001] The invention belongs to the technical field of noise processing equipment, and in particular relates to an outdoor noise reduction device for a fan. Background technique [0002] Air conditioning noise is the noise emitted by the air conditioning system when it is working. The noise of the fan system body mainly includes fan rotation noise, electromagnetic noise formed by coils, and cyclone eddy current noise formed by airflow movement. The rear of the outdoor unit of the air conditioner is generally a smooth cement wall, and the outer surface of the smooth inner wall reflects most of the incident sound waves from the noise source to a large extent, resulting in the re-superposition of the reflected sound waves and the incident sound waves, resulting in reverberation with increased sound energy Noise formation. If there is a situation where fans are installed side by side, each unit of the same type does not have a corresponding sound insulation cove...
Claims
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IPC IPC(8): F24F1/40
CPCF24F1/40
Inventor 张远堂朱江周建
Owner 重庆丰望环保科技有限公司