CN-121976952-A - Silencing structure and compressor

Abstract

The present invention provides a silencing structure and a compressor, for solving the above problems, wherein the silencing structure comprises: the main body is internally provided with a cavity, the main body is provided with a plurality of exhaust channels, the exhaust channels are internally provided with valve bodies, the valve bodies are used for opening or closing the exhaust channels, and the valve bodies are used for selecting one or a plurality of openings according to the gas pressure in the cavity. According to the invention, the technical problem that the noise reduction effect is poor because the silencer in the prior art can not dynamically adjust the through-flow state of the silencing cavity under different load conditions of the compressor can be solved.

Inventors

• XU YUGE
• Tang Yunqian

Assignees

• 珠海凌达压缩机有限公司
• 珠海格力电器股份有限公司

Dates

Publication Date

20260505

Application Date

20251231

Claims (8)

1. 1. The silencing structure is characterized by comprising a main body (2), wherein a cavity (3) is formed in the main body (2), a plurality of exhaust channels (4) are formed in the main body (2), a valve body (5) is arranged in each exhaust channel (4), the valve body (5) is used for opening or closing each exhaust channel (4), and one or more valve bodies (5) are selected to be opened according to the gas pressure in the cavity (3).
2. 2. The silencing structure as claimed in claim 1, wherein the valve bodies (5) are pressure check valves, and the threshold value of each valve body (5) is different.
3. 3. The silencing structure according to claim 1, wherein the valve body (5) is an electronic valve, and the opening degree of the valve body (5) can be changed according to the gas pressure in the chamber (3) and the noise frequency.
4. 4. The silencer structure according to claim 1, wherein a plurality of exhaust pipes are provided in the main body (2), the exhaust pipes being in communication with the chamber (3), and the exhaust passages (4) being formed in the exhaust pipes.
5. 5. A compressor comprising the sound deadening structure according to any one of claims 1 to 4.
6. 6. The compressor as set forth in claim 5, wherein the compressor includes a pump body (1), the main body (2) is provided on the pump body (1), and an exhaust port of the pump body (1) communicates with the chamber (3).
7. 7. The compressor of claim 6, wherein the longitudinal section of the pump body (1) is taken as a projection plane, the main body (2) is U-shaped, an opening of the main body (2) faces the pump body (1), and a cavity (3) is formed by enclosing the main body (2) and the pump body (1).
8. 8. The compressor according to claim 6, wherein a plurality of protrusions are arranged on the main body (2), through holes are arranged on the protrusions, the through holes are communicated with the chamber (3), the through holes form the exhaust passage (4), and one end of the exhaust passage (4) facing away from the main body (2) faces towards an exhaust pipe of the compressor.

Description

Silencing structure and compressor Technical Field The invention belongs to the technical field of compressors, and particularly relates to a silencing structure and a compressor. Background In the operation process of the traditional compressor, larger airflow noise can be generated when the pump body exhausts, and particularly under the high-load working condition, the noise problem is outstanding because of high exhaust flow speed and obvious turbulence effect. In order to solve this problem, in the prior art, a fixed volume silencing chamber is usually provided between the pump body and the exhaust pipe, and the volume is enlarged to reduce the air flow velocity, thereby suppressing noise. However, such a fixed structure may cause a large volume loss at a low load condition, reducing compression efficiency. In addition, the through-flow capacity of the silencing cavity cannot be dynamically adjusted according to the actual running state, so that the compressor cannot realize high-efficiency and low-noise collaborative optimization under different working conditions. Therefore, how to dynamically adjust the through-flow state of the silencing cavity under different load conditions becomes a key technical problem for improving the comprehensive performance of the compressor. Because the silencer in the prior art can not dynamically adjust the through-flow state of the silencing cavity under different load conditions of the compressor, the technical problem of poor noise reduction effect exists, and therefore the invention designs a silencing structure and the compressor. Disclosure of Invention Therefore, the invention provides a silencing structure and a compressor, which can solve the technical problem that the noise reduction effect is poor because the silencer in the prior art cannot dynamically adjust the flow state of a silencing cavity under different load conditions of the compressor. In order to solve the problems, the invention provides a silencing structure, which comprises a main body, wherein a cavity is formed in the main body, a plurality of exhaust channels are formed in the main body, a valve body is arranged in each exhaust channel and used for opening or closing the exhaust channel, and one or more valve bodies are selected to be opened according to the gas pressure in the cavity. In some embodiments, the valve bodies employ pressure check valves, each of which has a different threshold value. In some embodiments, the valve body adopts an electronic valve, and the opening degree of the valve body can be changed according to the gas pressure in the chamber and the frequency of noise. In some embodiments, a plurality of exhaust pipes are provided on the main body, the exhaust pipes being in communication with the chamber, the exhaust pipes forming the exhaust passage therein. The invention also provides a compressor which comprises the silencing structure. In some embodiments, the compressor includes a pump body, the body is disposed on the pump body, and an exhaust port of the pump body is in communication with the chamber. In some embodiments, the longitudinal section of the pump body is taken as a projection plane, the main body is in a U shape, the opening of the main body faces the pump body, and a cavity is formed by enclosing the main body and the pump body. In some embodiments, the main body is provided with a plurality of protrusions, the protrusions are provided with through holes, the through holes are communicated with the cavity, the through holes form the exhaust passage, and one end of the exhaust passage, which is away from the main body, faces towards the exhaust pipe of the compressor. The invention also provides a compressor which comprises the silencing structure. The silencing structure and the compressor provided by the invention have the following beneficial effects: When the silencing structure is arranged on the compressor, one or more valves are selected to be opened according to the gas pressure in the cavity, so that the number of silencing cavity exhaust channels to be opened can be judged according to the exhaust pressure generated by the current operation working condition of the compressor, the high-efficiency and low-noise performance collaborative optimization of the compressor in different operation states is realized, and the overall operation quality and the energy efficiency level are improved. Drawings In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. The drawings in the following description are merely exemplary and other implementations drawings may be derived from the drawings provided without inventive effort for a person skilled in the art. FIG. 1 is a schematic view of a prior art compressor; FIG. 2 is a schematic diagram of a prior art compressor; fig. 3 is a schematic