Silencer and vehicle-mounted air conditioner silencing system

A muffler and muffler cavity technology, applied in vehicle parts, noise suppression, air treatment equipment, etc., can solve problems such as poor muffling effect, affecting user experience, complex structure, etc.

CN112406460AInactive Publication Date: 2021-02-26EVERGRANDE NEW ENERGY AUTOMOTIVE INVESTMENT HLDG GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2021-02-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a silencer and a vehicle-mounted air conditioner silencing system, in the using process, fluid is introduced into an input pipe, such as a refrigerant in a vehicle-mounted airconditioner. The introduced fluid flows into a first insertion pipe from the input pipe, and then flows into a silencing cavity through the first insertion pipe. Due to the fact that the first insertion pipe is located in the silencing cavity, the cross section between the first insertion pipe and the silencing cavity changes suddenly to cause acoustic impedance changes, and an expansion type silencing structure is formed. Then, the fluid flowing into the silencing cavity sequentially flows through all split cavities through flow guide holes in partition plates; and finally, the fluid flows into an output pipe from the last split cavity and flows out of the output pipe. Due to the fact that silencing holes are formed in the partition plates, the silencing holes and the split cavities in the two sides of the silencing holes form a resonance type sound absorption structure, and noise in the silencing cavity is further weakened. Meanwhile, the silencer has the advantages of being simplein structure, low in manufacturing cost, convenient to use and the like, and large-scale application and popularization of the silencer are facilitated.
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Description

technical field

[0001] The invention relates to the technical field of automobile construction, in particular to a muffler and a vehicle-mounted air-conditioning muffler system. Background technique

[0002] As people's requirements for car driving comfort are getting higher and higher, car air conditioners are used more and more frequently, and their operating noise has been criticized by users. When the car is running at a low speed on a flat road, the contribution of the air conditioning system to the noise inside the car is the main part. The traditional noise reduction method for the vehicle air conditioning system usually adds a muffler to the air conditioning pipeline to reduce the amount of noise inside the vehicle. However, the traditional muffler is limited by its own structural characteristics. Either the noise reduction effect is poor, or the structure is complex and the production cost is high. It cannot be widely used in vehicle air-conditioning systems, which...

Examples

Embodiment Construction

[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0023] In one example, please refer to figure 1 and figure 2 , a muffler 100, the muffler 100 includes: a shell 110 and a partition plate 160. The housing 110 is provided with a muffler cavity 111 . A first insertion tube 140 is provided on the wall of the muffler chamber 111 . The h...