Silencing structure and compressor

Abstract

The invention provides a silencing structure and a compressor, in order to solve the problem, the silencing structure comprises a main body, a cavity is formed in the main body, a plurality of exhaust channels are formed in the main body, valves are arranged in the exhaust channels and used for opening or closing the exhaust channels, and the valve bodies are arranged in the cavity and used for opening or closing the exhaust channels. One or more valve bodies are selected to be opened according to the gas pressure in the cavity. According to the compressor, the technical problem that in the prior art, a silencer cannot dynamically adjust the through-flow state of the silencing cavity under different load conditions of the compressor, and consequently the noise reduction effect is poor can be solved.

Description

Technical Field

[0001] This invention belongs to the field of compressor technology, specifically relating to a noise reduction structure and a compressor. Background Technology

[0002] Traditional compressors generate significant airflow noise during operation, especially under high load conditions, where high exhaust velocity and pronounced turbulence exacerbate the noise problem. To address this, existing technologies typically incorporate a fixed-volume silencer chamber between the pump body and the exhaust pipe, reducing airflow velocity and thus suppressing noise by increasing the volume. However, this fixed structure leads to significant volumetric losses under low load conditions, reducing compression efficiency. Furthermore, the inability to dynamically adjust the flow capacity of the silencer chamber based on actual operating conditions prevents the compressor from achieving a balanced optimization of high efficiency and low noise under varying operating conditions. Therefore, dynamically adjusting the flow state of the silencer chamber under different load conditions has become a key technical challenge for improving the overall performance of compressors.

[0003] Since existing silencers cannot dynamically adjust the flow state of the silencer chamber under different compressor load conditions, resulting in poor noise reduction performance, this invention studies and designs a silencer structure and compressor. Summary of the Invention

[0004] Therefore, the present invention provides a silencing structure and a compressor that can solve the technical problem in the prior art that the silencer cannot dynamically adjust the flow state of the silencing chamber under different compressor load conditions, resulting in poor noise reduction effect.

[0005] To address the aforementioned problems, the present invention provides a noise reduction structure, comprising: a main body having a chamber therein, a plurality of exhaust channels provided on the main body, a valve body provided within each exhaust channel, the valve body being used to open or close the exhaust channel, and one or more of the plurality of valve bodies being selected to open according to the magnitude of the gas pressure within the chamber.

[0006] In some embodiments, the valve body is a pressure check valve, and each valve body has a different threshold.

[0007] In some embodiments, the valve body is an electronic valve, and the opening degree of the valve body can be varied according to the gas pressure in the chamber and the frequency of the noise.

[0008] In some embodiments, the main body is provided with a plurality of exhaust pipes, which are connected to the chamber and form the exhaust channel inside the exhaust pipes.

[0009] The present invention also provides a compressor that includes the aforementioned noise reduction structure.

[0010] In some embodiments, the compressor includes a pump body, the main body is disposed on the pump body, and the exhaust port of the pump body is connected to the chamber.

[0011] In some embodiments, with the longitudinal section of the pump body as the projection plane, the main body is U-shaped, the opening of the main body faces the pump body, and the main body and the pump body enclose a cavity.

[0012] In some embodiments, the main body is provided with a plurality of protrusions, each protrusion having a through hole that communicates with the chamber and forms the exhaust passage, with one end of the exhaust passage facing away from the main body facing the exhaust pipe of the compressor.

[0013] The present invention also provides a compressor that includes the aforementioned noise reduction structure.

[0014] The noise reduction structure and compressor provided by this invention have the following beneficial effects: When the silencing structure of the present invention is installed on the compressor, one or more of the valve bodies can be opened according to the gas pressure in the chamber. The number of exhaust channels of the silencing chamber to be opened can be determined according to the exhaust pressure generated by the compressor under the current operating conditions. This achieves synergistic optimization of the compressor's high efficiency and low noise performance under different operating conditions, thereby improving the overall operating quality and energy efficiency. Attached Figure Description

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a compressor using existing technology. Figure 1 ; Figure 2 This is a structural diagram of a compressor using existing technology. Figure 2 ; Figure 3 This is a schematic diagram of the noise reduction structure of the present invention.

[0017] The attached figures are labeled as follows: 1. Pump body; 2. Main body; 3. Chamber; 4. Exhaust passage; 5. Valve body. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0020] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0021] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0022] See also Figure 2As shown, according to an embodiment of the present invention, a silencing structure is provided, comprising: a main body 2, wherein the main body 2 has a chamber 3, and a plurality of exhaust channels 4 are provided on the main body 2. A valve body 5 is provided within each exhaust channel 4, and the valve body 5 is used to open or close the exhaust channel 4. Furthermore, one or more of the plurality of valve bodies 5 are selected to open based on the gas pressure within the chamber 3. In this technical solution, when the silencing structure of the present invention is installed on a compressor, by selecting one or more of the plurality of valve bodies 5 to open based on the gas pressure within the chamber 3, the number of silencing chamber exhaust channels 4 to be opened can be determined based on the exhaust pressure generated by the compressor under its current operating conditions. This achieves synergistic optimization of the compressor's high efficiency and low noise performance under different operating conditions, improving overall operating quality and energy efficiency.

[0023] In some embodiments, the valve body 5 is a pressure check valve, and each valve body 5 has a different threshold.

[0024] In this technical solution, the pressure check valves determine their opening and closing based on pressure limits. Each pressure check valve has a different limit, which can be individually set according to the compressor's requirements. By changing the number of valves that are open, the exhaust flow rate of the silencer chamber is altered, allowing the silencer to reduce noise according to different exhaust pressures.

[0025] In some implementations, the opening threshold of pressure check valve 1 is set to be the lowest, followed by pressure check valve 2 and pressure check valve N. Under low-load conditions, such as when the compressor is operating at partial load, the discharge pressure generated by the compressor can only reach the lowest threshold. At this time, only pressure check valve 1 is opened to maintain basic noise reduction function, while reducing ineffective volume and improving compression efficiency. Under high-load conditions, such as when running at full load, the generated discharge pressure is also high. At this time, depending on whether the pressure reaches the threshold, pressure check valve 1, pressure check valve 2, and even pressure check valve N will be opened simultaneously to increase the discharge flow area and reduce the airflow velocity through each channel per unit time, thereby effectively suppressing turbulence noise and improving operational stability.

[0026] When the compressor undergoes refrigeration performance testing under different operating conditions (see table below), the load is lighter under normal operating conditions than under T3 conditions. If a conventional silencer is used, its exhaust port is fixed and cannot accommodate both conditions. However, using the silencing structure of this invention, when testing under normal operating conditions (exhaust pressure Pd < 3.401), only pressure check valve 1 is open. When testing under T3 conditions (exhaust pressure 3.401 < Pd < x), the opening requirement for pressure check valve 2 is met, but the opening requirement for pressure check valve 3 is not met. In other words, only pressure check valves 1 and 2 are open simultaneously, increasing the silencing chamber and flow area.

[0027]

[0028] In some embodiments, the valve body 5 is an electronic valve, and the opening degree of the valve body 5 can be varied according to the gas pressure in the chamber 3 and the frequency of the noise.

[0029] In this technical solution, the electronic valve in the silencing structure of the present invention is an electromagnetically driven automatic regulating valve. The control system dynamically adjusts the opening degree of each channel according to the real-time detected exhaust pressure fluctuations and noise signals, rather than just fully opening or fully closing.

[0030] Of course, in the silencing structure of the present invention, the valve body 5 can also be other controllable valves.

[0031] In the silencing structure of this invention, valve opening is controlled by setting valve limits. When the exhaust pressure is greater than or equal to the limits of certain valves, these valves will open. The valves are connected in parallel. For example, when the compressor is running under no-load, only the opening pressure requirement of valve 1 is met, so only valve 1 is open. When the compressor is running under full load, the opening requirement of the maximum limit valve N is reached, so valves 1, 2...N are all open.

[0032] In some embodiments, the main body 2 is provided with a plurality of exhaust pipes, which are connected to the chamber 3, and the exhaust channel 4 is formed inside the exhaust pipe.

[0033] In this technical solution, the exhaust pipe provides installation space for the valve body 5, which facilitates the assembly of the valve body 5 and allows the silenced airflow in the chamber 3 to be discharged quickly.

[0034] The silencing structure of this invention is applicable to compressors of various structures, such as refrigeration compressors and air compressors, and features simple structure, flexible control, and strong adaptability. By rationally designing the number of silencing chamber channels and the opening threshold of the pressure check valve, the performance of the compressor under different operating conditions can be further optimized.

[0035] The silencing structure of this invention can solve the problems of large volume loss and low efficiency caused by fixed silencing chambers in traditional compressors under low load conditions, and excessive noise caused by excessive airflow velocity in traditional compressors under high load conditions. By dynamically adjusting the number of silencing chambers involved in the operation through the opening and closing of valves, the synergistic optimization of high efficiency and low noise performance of the compressor under different operating conditions can be achieved, thereby improving the overall operating quality and energy efficiency.

[0036] The present invention also provides a compressor including the above-described silencing structure.

[0037] The compressor of the present invention is preferably a rotary compressor, but of course, other types of compressors are also acceptable.

[0038] In some embodiments, the compressor includes a pump body 1, the main body 2 is disposed on the pump body 1, and the exhaust port of the pump body 1 is connected to the chamber 3.

[0039] In this technical solution, the high-pressure gas discharged from the pump body 1 flows into the chamber 3 and then is discharged from the exhaust channel 4. Furthermore, the number of exhaust channels 4 to be opened is adjusted according to the different pressures of the high-pressure gas discharged from the pump body 1, thereby meeting the noise reduction requirements of the compressor under different operating conditions, realizing the synergistic optimization of high efficiency and low noise performance of the compressor under different operating conditions, and improving the overall operating quality and energy efficiency level.

[0040] In some embodiments, with the longitudinal section of the pump body 1 as the projection plane, the main body 2 is U-shaped, the opening of the main body 2 faces the pump body 1, and the main body 2 and the pump body 1 enclose a chamber 3.

[0041] In this technical solution, the main body 2 is U-shaped. Of course, the main body 2 can also be a cover structure. The main body 2 covers the pump body 1, and the compressor exhaust port is located inside the pump body, so that the high-pressure gas discharged from the pump body 1 flows into the main body 1 quickly.

[0042] In some embodiments, the main body 2 is provided with a plurality of protrusions, and the protrusions are provided with through holes. The through holes are connected to the chamber 3 and form the exhaust channel 4. The end of the exhaust channel 4 facing away from the main body 2 is directed toward the exhaust pipe of the compressor.

[0043] In this technical solution, a protrusion is provided on the main body 1, and a through hole is provided on the protrusion, so that the valve body 5 has an installation space. The compressor of the present invention has multiple independent and controllable silencer channels between the compressor cylinder and the exhaust pipe; each silencer channel is equipped with a controllable valve to realize the opening and closing control of the channel; the number of silencer channels opened is dynamically adjusted according to the compressor operating conditions to achieve the synergy of efficiency and noise.

[0044] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A noise-absorbing structure, characterized in that: include: The main body (2) has a chamber (3) and multiple exhaust channels (4) are provided on the main body (2). A valve body (5) is provided in the exhaust channel (4). The valve body (5) is used to open or close the exhaust channel (4). The multiple valve bodies (5) are selected to open one or more according to the gas pressure in the chamber (3).

2. The noise-absorbing structure according to claim 1, characterized in that: The valve body (5) is a pressure check valve, and the threshold of each valve body (5) is different.

3. The noise-absorbing structure according to claim 1, characterized in that: 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 frequency of the noise.

4. The noise-absorbing structure according to claim 1, characterized in that: The main body (2) is provided with multiple exhaust pipes, which are connected to the chamber (3), and the exhaust channel (4) is formed inside the exhaust pipe.

5. A compressor, characterized in that, The noise-reducing structure includes any one of claims 1 to 4.

6. The compressor according to claim 5, characterized in that: The compressor includes a pump body (1), the main body (2) is disposed on the pump body (1), and the exhaust port of the pump body (1) is connected to the chamber (3).

7. The compressor according to claim 6, characterized in that: With the longitudinal section of the pump body (1) as the projection plane, the main body (2) is U-shaped, the opening of the main body (2) faces the pump body (1), and the main body (2) and the pump body (1) enclose a chamber (3).

8. The compressor according to claim 6, characterized in that: The main body (2) is provided with a plurality of protrusions, and the protrusions are provided with through holes. The through holes are connected to the chamber (3) and form the exhaust channel (4). The end of the exhaust channel (4) facing away from the main body (2) is directed toward the exhaust pipe of the compressor.

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