A pump body silencing assembly, a compressor exhaust structure and a compressor
Patent Information
- Application Number
- CN202522026774.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-09-22
AI Technical Summary
[0004]本实用新型的目的在于提供一种泵体消音组件、压缩机排气结构及压缩机，以解决现有技术中存在的泵体结构采用在上排气阀座和下排气阀座之间设置空腔结构，空腔结构会受到多次激励，极易共振，易产生较大噪声的技术问题
[0020]本实用新型的有益效果是：本实用新型提供的泵体消音组件、压缩机排气结构及压缩机，包括上排气阀座、下排气阀座以及中间层板，所述中间层板设置在所述上排气阀座和所述下排气阀座之间，所述中间层板与所述上排气阀座之间以及所述中间层板与所述下排气阀座之间均设置有消声流道，且所述中间层板两侧的所述消声流道分别连通上气缸排气口和下气缸排气口，以使所述中间层板两侧的所述消声流道能够分别用于上气缸排气和下气缸排气，从而确保所述中间层板两侧的所述消声流道不会持续收到激励，避免共振产生较大噪声的问题。
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Figure CN224664807U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressor technology, and in particular to a pump body silencing component, a compressor exhaust structure, and a compressor. Background Technology
[0002] In existing technologies, rotary compressors have significant advantages such as small size and simple structure, and are widely used in the commercial air conditioning field. Commercial air conditioning systems typically use large-displacement compressors, generally employing a dual-cylinder or higher structure with at least two or more exhaust ports. The refrigerant gas is compressed in the cylinders and discharged through exhaust valves, then enters the casing after passing through complex flow channels and cavities. This multi-exhaust port configuration creates multiple exhaust noise sources. Furthermore, the high-pressure gas flowing through different cavities and flow paths generates aerodynamic and pulsating noise, and is prone to resonance, further exacerbating the noise.
[0003] Figure 1 The diagram shows a current pump body structure, including an upper cylinder 100, an upper exhaust valve seat 200, a lower exhaust valve seat 300, and a lower cylinder 400. The upper exhaust valve seat 200 is used for exhaust from the upper cylinder, and the lower exhaust valve seat 300 is used for exhaust from the lower cylinder. Both the upper and lower cylinder exhaust gases are discharged into the cavity structure formed between the upper exhaust valve seat 200 and the lower exhaust valve seat 300, and then discharged from the pump body through a flow channel. The upper and lower cylinder exhaust gases are 180° out of phase. Therefore, the cavity structure formed between the upper exhaust valve seat 200 and the lower exhaust valve seat 300 is subjected to multiple excitations, making it prone to resonance and generating significant noise without silencing components. Utility Model Content
[0004] The purpose of this invention is to provide a pump body silencing component, a compressor exhaust structure, and a compressor, to solve the technical problem in the prior art where the pump body structure uses a cavity structure between the upper and lower exhaust valve seats. This cavity structure is subject to multiple excitations, making it prone to resonance and generating significant noise. The various technical effects of the preferred solutions provided by this invention are detailed below.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] The pump body silencing assembly provided by this utility model includes an upper exhaust valve seat, a lower exhaust valve seat, and an intermediate layer plate, wherein the intermediate layer plate is disposed between the upper exhaust valve seat and the lower exhaust valve seat;
[0007] A silencer channel is provided between the intermediate layer plate and the upper exhaust valve seat, and between the intermediate layer plate and the lower exhaust valve seat; and the silencer channels on both sides of the intermediate layer plate are respectively connected to the upper cylinder exhaust port and the lower cylinder exhaust port.
[0008] The intermediate layer plate is also provided with a connecting channel that connects the two noise-absorbing channels.
[0009] As an optional implementation, the flow channel is a through hole provided on the intermediate layer plate.
[0010] As an optional implementation, a guide arm is provided on the through hole, and the guide arm extends into the silencer channel toward the upper exhaust valve seat and / or the lower exhaust valve seat.
[0011] As an optional implementation, the flow channel is a plurality of micropores disposed on the intermediate layer plate.
[0012] As an optional implementation, both the upper exhaust valve seat and the lower exhaust valve seat are provided with exhaust chambers on the side facing the intermediate layer plate, so that the noise-absorbing flow channel is formed between the intermediate layer plate and the upper exhaust valve seat, and between the intermediate layer plate and the lower exhaust valve seat.
[0013] As an optional implementation, the exhaust chamber includes multiple silencing chambers, with adjacent silencing chambers connected by a silencing channel, the silencing channel having a different cross-sectional size than the silencing chamber.
[0014] As an optional implementation, the cross-sectional dimension of the anechoic chamber is D2, and the cross-sectional dimension of the anechoic channel is D1, where 1 < D1 / D2 < 3.
[0015] As an alternative implementation, the cross-sectional area or length of the plurality of anechoic chambers may be the same or different.
[0016] As an optional implementation, the upper exhaust valve seat is provided with an upper air inlet, and the lower exhaust valve seat is provided with a lower air inlet. The upper air inlet and the lower air inlet are respectively used to connect the silencer channels on both sides of the intermediate layer plate with the upper cylinder exhaust port and the lower cylinder exhaust port, respectively.
[0017] As an optional implementation, the upper exhaust valve seat is provided with an exhaust port.
[0018] A compressor exhaust structure includes an upper cylinder, a lower cylinder, and a pump body silencer assembly as described above disposed between the upper cylinder and the lower cylinder.
[0019] A compressor includes an upper cylinder, a lower cylinder, and a pump body silencing assembly as described above disposed between the upper cylinder and the lower cylinder.
[0020] The beneficial effects of this utility model are as follows: The pump body silencing assembly, compressor exhaust structure, and compressor provided by this utility model include an upper exhaust valve seat, a lower exhaust valve seat, and an intermediate layer plate. The intermediate layer plate is disposed between the upper exhaust valve seat and the lower exhaust valve seat. Silencing channels are provided between the intermediate layer plate and the upper exhaust valve seat, and between the intermediate layer plate and the lower exhaust valve seat. The silencer channels on both sides of the intermediate layer plate are respectively connected to the upper cylinder exhaust port and the lower cylinder exhaust port, so that the silencer channels on both sides of the intermediate layer plate can be used for upper cylinder exhaust and lower cylinder exhaust respectively, thereby ensuring that the silencer channels on both sides of the intermediate layer plate will not be continuously excited, avoiding the problem of resonance generating large noise. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the existing pump body structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the pump body silencing assembly of this utility model;
[0024] Figure 3 This is a schematic diagram of the structure of the upper exhaust valve seat of this utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the lower exhaust valve seat of this utility model;
[0026] Figure 5 This is a schematic diagram of the structure of the intermediate layer plate of this utility model (I);
[0027] Figure 6 This is a schematic diagram (II) of the structure of the intermediate layer plate of this utility model;
[0028] Figure 7 This is a schematic diagram of the intermediate layer structure of Embodiment 3 of this utility model;
[0029] Figure 8 This is a schematic diagram of the noise reduction principle of this utility model.
[0030] In the picture:
[0031] 100. Install the cylinder;
[0032] 200. Upper exhaust valve seat;
[0033] 300. Lower exhaust valve seat;
[0034] 400. Lower cylinder;
[0035] 500, Intermediate layer;
[0036] 600. Exhaust chamber;
[0037] 700, central shaft hole;
[0038] 800, screw hole;
[0039] 210. Upper air intake;
[0040] 220. Discharge outlet;
[0041] 310. Lower air intake;
[0042] 510. Through hole;
[0043] 520. Micropores;
[0044] 530. Flow guide arm;
[0045] 610. Anechoic chamber;
[0046] 620. Noise reduction channel. Detailed Implementation
[0047] Please refer to the attached diagram below. Figures 1 to 8 This document explains the content of this utility model and its differences from existing technologies. The technical solutions (including preferred solutions) of this utility model are further described in detail below through accompanying drawings and examples of optional embodiments. It should be noted that any technical feature or solution in this embodiment is one or more of a variety of optional technical features or solutions. For the sake of brevity, this document cannot exhaustively list all alternative technical features and solutions of this utility model, nor is it convenient to emphasize that each implementation of a technical feature is one of multiple optional implementations. Therefore, those skilled in the art should understand that any technical means provided by this utility model can be replaced, or any two or more technical means or features provided by this utility model can be combined to obtain a new technical solution. No technical feature or solution in this embodiment limits the scope of protection of this utility model. The scope of protection of this utility model should include any alternative technical solutions that can be conceived by those skilled in the art without creative effort, as well as new technical solutions obtained by combining any two or more technical means or features provided by this utility model.
[0048] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0049] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0050] This utility model provides a pump body silencing component, compressor exhaust structure, and compressor that reduce resonance and noise.
[0051] The following is combined Figures 1 to 8 The technical solution provided by this utility model will be described in more detail.
[0052] This utility model provides a pump body silencing assembly, including an upper exhaust valve seat 200, a lower exhaust valve seat 300, and an intermediate layer plate 500, wherein the intermediate layer plate 500 is disposed between the upper exhaust valve seat 200 and the lower exhaust valve seat 300.
[0053] A sound-absorbing channel is provided between the intermediate layer plate 500 and the upper exhaust valve seat 200, and between the intermediate layer plate 500 and the lower exhaust valve seat 300.
[0054] Furthermore, the noise reduction channels on both sides of the intermediate layer plate 500 are respectively connected to the exhaust port of the upper cylinder 100 and the exhaust port of the lower cylinder 400.
[0055] The pump body silencing assembly provided by this utility model includes an upper exhaust valve seat 200, a lower exhaust valve seat 300, and an intermediate layer plate 500. The intermediate layer plate 500 is disposed between the upper exhaust valve seat 200 and the lower exhaust valve seat 300. Silencing channels are provided between the intermediate layer plate 500 and the upper exhaust valve seat 200, and between the intermediate layer plate 500 and the lower exhaust valve seat 300. The silencer channels on both sides of the intermediate layer plate 500 are respectively connected to the exhaust port of the upper cylinder 100 and the exhaust port of the lower cylinder 400, so that the silencer channels on both sides of the intermediate layer plate 500 can be used for exhaust from the upper cylinder 100 and the lower cylinder 400, respectively. This ensures that the silencer channels on both sides of the intermediate layer plate 500 are not continuously excited, avoiding the problem of resonance generating large noise.
[0056] It is understandable that, due to the 180° phase difference between the exhaust from the upper cylinder 100 and the exhaust from the lower cylinder 400, when the upper cylinder 100 is exhausting, the lower cylinder 400 is closed; and when the lower cylinder 400 is exhausting, the upper cylinder 100 is closed. In this invention, by providing an intermediate layer plate 500, and by providing silencing channels between the intermediate layer plate 500 and the upper exhaust valve seat 200, and between the intermediate layer plate 500 and the lower exhaust valve seat 300, it is ensured that the silencing channels on both sides of the intermediate layer plate 500 can be used for the exhaust from the upper cylinder 100 and the lower cylinder 400 respectively. This prevents the silencing channels on both sides of the intermediate layer plate 500 from being continuously excited, thus solving the technical problem that using a cavity structure between the upper exhaust valve seat 200 and the lower exhaust valve seat 300 results in the cavity structure being subjected to multiple excitations, easily resonating, and generating significant noise.
[0057] It should be noted that the silencing channels on both sides of the intermediate layer 500 are connected by a conductive channel. The silencing channel below the intermediate layer 500 is equivalent to the resonant cavity of the silencing channel above the intermediate layer 500. The silencing is achieved by utilizing the exhaust time difference between the two silencing channels.
[0058] Furthermore, the upper exhaust valve seat 200, the lower exhaust valve seat 300, and the intermediate layer plate 500 are all provided with a central shaft hole 700, which are used to assemble the same shaft. In addition, a number of screw holes 800 are provided in the circumference of the upper exhaust valve seat 200, the lower exhaust valve seat 300, and the intermediate layer plate 500, which are used to lock the assembly with screws, thereby forming a sealed silencer flow channel on both sides of the intermediate layer plate 500.
[0059] In some embodiments of this utility model, the intermediate layer plate 500 is further provided with a connecting channel that connects the two noise-absorbing channels.
[0060] In some of the embodiments of this utility model described above, by providing a guide channel on the intermediate layer plate 500, the guide channel can connect the two silencer channels. Since the exhaust of the upper cylinder 100 and the exhaust of the lower cylinder 400 are 180° out of phase, the exhaust in the two silencer channels can flow to each other through the guide channel, thereby achieving flow splitting and multi-stage silencing, and further optimizing exhaust noise.
[0061] Understandably, when the exhaust of the upper cylinder 100 is opened, the exhaust of the lower cylinder 400 is closed. The exhaust of the upper cylinder 100 enters the silencer channel above the intermediate layer 500 to complete the first stage of silencer. The exhaust in the silencer channel can enter the silencer channel below the intermediate layer 500 through the guide channel to achieve high-pressure gas diversion. At the same time, the diverted gas can also pass through the silencer channel below the intermediate layer 500 to complete the second stage of silencer, thus achieving multi-stage silencer.
[0062] In some embodiments of this utility model, the guiding channel is a guiding hole 510 disposed on the intermediate layer plate 500.
[0063] In some of the embodiments of this utility model described above, by providing a through hole 510 on the intermediate layer plate 500, the through hole 510 can realize the diversion of high pressure gas, so that the diverted gas can also pass through the silencing channel of the lower layer of the intermediate layer plate 500 to complete the second stage of silencing, thereby realizing multi-stage silencing.
[0064] Specifically, the through hole 510 is located in the middle of the intermediate layer plate 500, near the central shaft hole; of course, it can also be located in other positions of the intermediate layer plate 500.
[0065] In some embodiments of this utility model, a guide arm 530 is provided on the through hole 510, and the guide arm 530 extends into the silencer channel in the direction of the upper exhaust valve seat 200 and / or the lower exhaust valve seat 300.
[0066] In some of the embodiments of this utility model described above, the guide arm 530 is disposed on the through hole 510, and the guide arm 530 extends into the silencing channels on both sides. By changing the size of the guide arm 530, the silencing frequency can be freely selected.
[0067] Specifically, the guide arm 530 is disposed on the inner wall of the through hole 510. By changing the length or thickness of the guide arm 530, the size of the through channel can be adjusted.
[0068] It is understood that the conductive channel is used to connect the two silencing channels, and the silencing channel below the intermediate layer 500 is equivalent to the resonant cavity of the silencing channel above the intermediate layer 500, and its silencing frequency fr satisfies:
[0069]
[0070] The meanings of each term in the formula are as follows:
[0071] c r The speed of sound is expressed in m / s.
[0072] s represents the cross-sectional area of the guide arm 530, m 2 ;
[0073] V0 represents the volume of the sound-absorbing channel below the intermediate layer plate 500, in meters. 3 ;
[0074] l0 indicates the length of the guide arm 530, in meters.
[0075] In some embodiments of this utility model, the guiding channel is a plurality of microholes 520 disposed on the intermediate layer plate 500.
[0076] In some of the embodiments of this utility model described above, the guiding channel is a plurality of microholes 520 disposed on the intermediate layer plate 500. The high-pressure airflow is reflected and rubbed through the microholes 520, converting sound energy into heat energy, thereby playing a role in noise reduction.
[0077] In some embodiments of this utility model, both the upper exhaust valve seat 200 and the lower exhaust valve seat 300 are provided with an exhaust chamber 600 on the side facing the intermediate layer plate 500, so that the noise reduction channel is formed between the intermediate layer plate 500 and the upper exhaust valve seat 200 and between the intermediate layer plate 500 and the lower exhaust valve seat 300.
[0078] In some embodiments of this utility model described above, exhaust chambers 600 are respectively provided on the side of the upper exhaust valve seat 200 and the lower exhaust valve seat 300 facing the intermediate layer plate 500, thereby forming silencing channels between the intermediate layer plate 500 and the upper exhaust valve seat 200 and between the intermediate layer plate 500 and the lower exhaust valve seat 300. This allows the silencing channels on both sides of the intermediate layer plate 500 to be used for exhaust from the upper cylinder 100 and the lower cylinder 400, respectively, thereby ensuring that the silencing channels on both sides of the intermediate layer plate 500 are not continuously excited, avoiding the problem of resonance generating large noise.
[0079] It should be noted that in some embodiments, exhaust chambers 600 may also be provided on both sides of the intermediate layer plate 500, and the exhaust chambers 600 on both sides of the intermediate layer plate 500 form a sound-absorbing flow channel with the upper exhaust valve seat 200 and the lower exhaust valve seat 300 respectively.
[0080] Alternatively, exhaust chambers 600 may be provided on both sides of the intermediate layer plate 500 and on the upper exhaust valve seat 200 and the lower exhaust valve seat 300.
[0081] In some embodiments of this utility model, the exhaust chamber 600 includes a plurality of silencing chambers 610, and two adjacent silencing chambers 610 are connected by a silencing channel 620, wherein the silencing channel 620 has a different cross-sectional size than the silencing chamber 610.
[0082] In some embodiments of the present invention described above, the exhaust chamber 600 includes a plurality of silencing chambers 610. Two adjacent silencing chambers 610 are connected by a silencing channel 620. The silencing channel 620 and the silencing chamber 610 have different cross-sectional dimensions, so that the exhaust chamber 600 forms a cavity with a larger cross-section and a cavity with a smaller cross-section. The high-pressure gas first enters the cavity with a larger cross-section, then passes through the cavity with a suddenly smaller cross-section, and then flows into the cavity with a larger cross-section again... After passing through a series of variable cross-section flow channels, the acoustic impedance changes due to the change in cross-section, thereby achieving a silencing effect. The silencing high-pressure gas is finally discharged from the pump body.
[0083] It is understandable that the exhaust chamber 600 utilizes the abrupt change in acoustic impedance due to the sudden change in cross-sectional area within the channel to generate emission and interference, thereby achieving noise reduction. Noise reduction can be achieved without using sound-absorbing materials.
[0084] In some specific embodiments of this utility model, the cross-sectional dimension of the anechoic chamber 610 is D2, and the cross-sectional dimension of the anechoic channel 620 is D1, where 1 < D1 / D2 < 3.
[0085] In some embodiments of this utility model, the cross-sectional area or length of the plurality of anechoic chambers 610 may be the same or different.
[0086] In some of the embodiments of this utility model described above, the cross-sectional area or length of the plurality of silencing chambers 610 are set to be the same or different, so as to better improve the noise performance of the compressor during exhaust.
[0087] In some embodiments of this utility model, the upper exhaust valve seat 200 is provided with an upper air inlet 210, and the lower exhaust valve seat 300 is provided with a lower air inlet 310. The upper air inlet 210 and the lower air inlet 310 are respectively used to connect the silencer channels on both sides of the intermediate layer plate 500 with the exhaust ports of the upper cylinder 100 and the lower cylinder 400, respectively.
[0088] In some embodiments of the present invention described above, the upper air inlet 210 is used to allow the high-pressure gas from the exhaust port of the upper cylinder 100 to enter the silencing channel above the intermediate layer plate 500, and the lower air inlet 310 is used to allow the high-pressure gas from the exhaust port of the lower cylinder 400 to enter the silencing channel below the intermediate layer plate 500. This ensures that the exhaust gas from the upper cylinder 100 and the exhaust gas from the lower cylinder 400 are discharged through the silencing channels on both sides of the intermediate layer plate 500, thereby ensuring that the silencing channels on both sides of the intermediate layer plate 500 are not continuously excited, thus avoiding the problem of resonance generating large noise.
[0089] It should be noted that valve plate baffles and valve plates are also provided on the upper exhaust valve seat 200 and the lower exhaust valve seat 300.
[0090] In some embodiments of this utility model, the upper exhaust valve seat 200 is provided with an exhaust port 220.
[0091] In some embodiments of the present invention described above, when the upper cylinder 100 is opened for exhaust, the lower cylinder 400 is closed for exhaust. The exhaust from the upper cylinder 100 enters the silencer channel above the intermediate layer plate 500 to complete the first stage of silencing, and finally exits the pump body through the outlet 220. The exhaust in the silencer channel can enter the silencer channel below the intermediate layer plate 500 through the guide channel to achieve high-pressure gas diversion. At the same time, the diverted gas can also complete the second stage of silencing through the silencer channel below the intermediate layer plate 500, and finally exit through the outlet 220, thereby achieving multi-stage silencing.
[0092] Similarly, when the exhaust of cylinder 400 is opened, the exhaust of cylinder 100 is closed. The exhaust of cylinder 400 enters the silencer channel below the intermediate layer plate 500 to complete the first stage of silencer, and finally exits the pump body through the outlet 220. The exhaust in the silencer channel can enter the silencer channel above the intermediate layer plate 500 through the guide channel to achieve high-pressure gas diversion. At the same time, the diverted gas can also complete the second stage of silencer through the silencer channel on the upper layer of the intermediate layer plate 500, and finally exit through the outlet 220, thus achieving multi-stage silencer.
[0093] This utility model also provides a compressor exhaust structure, including an upper cylinder 100, a lower cylinder 400, and a pump body silencing assembly as described above disposed between the upper cylinder 100 and the lower cylinder 400.
[0094] This utility model also provides a compressor, including an upper cylinder 100, a lower cylinder 400, and a pump body silencing assembly as described above disposed between the upper cylinder 100 and the lower cylinder 400.
[0095] Example 1:
[0096] The pump body silencing assembly provided by this utility model includes an upper exhaust valve seat 200, a lower exhaust valve seat 300, and an intermediate layer plate 500, wherein the intermediate layer plate 500 is disposed between the upper exhaust valve seat 200 and the lower exhaust valve seat 300.
[0097] Both the upper exhaust valve seat 200 and the lower exhaust valve seat 300 have exhaust chambers 600 on the side facing the intermediate layer plate 500, so that a noise-absorbing flow channel is formed between the intermediate layer plate 500 and the upper exhaust valve seat 200 and between the intermediate layer plate 500 and the lower exhaust valve seat 300. The intermediate layer plate 500 is provided with a through hole 510 connecting the two noise-absorbing flow channels.
[0098] Furthermore, the upper exhaust valve seat 200 is provided with an upper air inlet 210 and an exhaust outlet 220, and the lower exhaust valve seat 300 is provided with a lower air inlet 310. The upper air inlet 210 and the lower air inlet 310 are respectively used to connect the silencer channels on both sides of the intermediate layer plate 500 with the exhaust outlet of the upper cylinder 100 and the exhaust outlet of the lower cylinder 400.
[0099] This allows the silencing channels on both sides of the intermediate layer plate 500 to connect to the exhaust ports of the upper cylinder 100 and the lower cylinder 400, respectively, so that the silencing channels on both sides of the intermediate layer plate 500 can be used for exhausting the upper cylinder 100 and the lower cylinder 400, respectively. This ensures that the silencing channels on both sides of the intermediate layer plate 500 will not be continuously excited, thus avoiding the problem of resonance generating large noise.
[0100] Furthermore, the exhaust chamber 600 includes a plurality of silencing chambers 610, and two adjacent silencing chambers 610 are connected by a silencing channel 620, wherein the silencing channel 620 has a different cross-sectional size than the silencing chamber 610.
[0101] Specifically, the cross-sectional dimension of the anechoic chamber 610 is D2, and the cross-sectional dimension of the anechoic channel 620 is D1, where 1 < D1 / D2 < 3.
[0102] This utility model also provides a compressor exhaust structure, including an upper cylinder 100, a lower cylinder 400, and a pump body silencing assembly as described above disposed between the upper cylinder 100 and the lower cylinder 400.
[0103] This utility model also provides a compressor, including an upper cylinder 100, a lower cylinder 400, and a pump body silencing assembly as described above disposed between the upper cylinder 100 and the lower cylinder 400.
[0104] Example 2:
[0105] The difference between this embodiment 2 and embodiment 1 is that the intermediate layer plate 500 is further provided with a number of microholes 520 that connect the two sound-absorbing channels.
[0106] Example 3:
[0107] The difference between this embodiment 3 and embodiment 1 is that: a guide arm 530 is provided on the through hole 510, and the guide arm 530 extends toward the upper exhaust valve seat 200 and the lower exhaust valve seat 300 into the silencer channels on both sides.
[0108] The guide arm 530 is disposed on the through hole 510. The guide arm 530 extends into the silencing channels on both sides. By changing the size of the guide arm 530, the silencing frequency can be freely selected.
[0109] Specifically, the guide arm 530 is disposed on the inner wall of the through hole 510. By changing the size of the through hole 510 and the length or thickness of the guide arm 530, the size of the flow channel can be adjusted.
[0110] It is understood that the conductive channel is used to connect the two silencing channels, and the silencing channel below the intermediate layer 500 is equivalent to the resonant cavity of the silencing channel above the intermediate layer 500, and its silencing frequency fr satisfies:
[0111]
[0112] The meanings of each term in the formula are as follows:
[0113] c r The speed of sound is expressed in m / s.
[0114] s represents the cross-sectional area of the guide arm 530, m 2 ;
[0115] V0 represents the volume of the sound-absorbing channel below the intermediate layer plate 500, in meters. 3 ;
[0116] l0 indicates the length of the guide arm 530, in meters.
[0117] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0118] Of course, this invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.
Claims
1. A pump body noise reduction assembly, characterized in that, It includes an upper exhaust valve seat, a lower exhaust valve seat, and an intermediate layer plate, wherein the intermediate layer plate is disposed between the upper exhaust valve seat and the lower exhaust valve seat; A silencer channel is provided between the intermediate layer plate and the upper exhaust valve seat, and between the intermediate layer plate and the lower exhaust valve seat; and the silencer channels on both sides of the intermediate layer plate are respectively connected to the upper cylinder exhaust port and the lower cylinder exhaust port. The intermediate layer plate is also provided with a connecting channel that connects the two noise-absorbing channels.
2. The pump body silencing assembly according to claim 1, characterized in that, The flow channel is a through hole provided on the intermediate layer plate.
3. The pump body silencing assembly according to claim 2, characterized in that, A guide arm is provided on the through hole, and the guide arm extends into the silencer channel toward the upper exhaust valve seat and / or the lower exhaust valve seat.
4. The pump body silencing assembly according to claim 1, characterized in that, The flow channel is a number of micropores disposed on the intermediate layer plate.
5. The pump body silencing assembly according to any one of claims 1-4, characterized in that, Both the upper exhaust valve seat and the lower exhaust valve seat have exhaust chambers on the side facing the intermediate layer plate, so that the silencer flow channel is formed between the intermediate layer plate and the upper exhaust valve seat, and between the intermediate layer plate and the lower exhaust valve seat.
6. The pump body silencing assembly according to claim 5, characterized in that, The exhaust chamber includes multiple silencing chambers, and two adjacent silencing chambers are connected by a silencing channel, the cross-sectional dimensions of which are different from those of the silencing chambers.
7. The pump body silencing assembly according to claim 6, characterized in that, The cross-sectional dimension of the anechoic chamber is D2, and the cross-sectional dimension of the anechoic channel is D1, where 1 < D1 / D2 < 3.
8. The pump body silencing assembly according to claim 6, characterized in that, The cross-sectional areas or lengths of the multiple anechoic chambers may be the same or different.
9. The pump body silencing assembly according to claim 5, characterized in that, The upper exhaust valve seat is provided with an upper air inlet, and the lower exhaust valve seat is provided with a lower air inlet. The upper air inlet and the lower air inlet are respectively used to connect the silencer channels on both sides of the intermediate layer plate with the upper cylinder exhaust port and the lower cylinder exhaust port, respectively.
10. The pump body silencing assembly according to claim 5, characterized in that, The upper exhaust valve seat is provided with an exhaust port.
11. A compressor exhaust structure, characterized in that, It includes an upper cylinder, a lower cylinder, and a pump body silencer assembly as described in any one of claims 1-10, disposed between the upper cylinder and the lower cylinder.
12. A compressor, characterized in that, It includes an upper cylinder, a lower cylinder, and a pump body silencer assembly as described in any one of claims 1-10, disposed between the upper cylinder and the lower cylinder.