Rotary compressor silencing low-noise double-layer silencer and pump

Abstract

The utility model relates to a silencing low-noise double-layer silencer of a rotary compressor and a pump, and belongs to the technical field of compressors, the silencing low-noise double-layer silencer comprises an upper support and a silencer body, the silencer body comprises an upper layer silencer body and a lower layer silencer body which are sequentially arranged on the upper support in a sleeving mode from top to bottom, and a semicircular silencing channel is formed in the lower layer silencer body; a plurality of sets of annular baffles are arranged in the silencing channel at intervals, and an independent silencing cavity is formed between every two adjacent sets of annular baffles. According to the silencer, the two layers of silencers are arranged, the semicircular silencing channel is arranged on the lower layer of silencer, the multiple sets of annular baffles are arranged in the silencing channel, and the silencing cavities are formed between the annular baffles, so that gas is blocked by the silencing cavities between the annular baffles to flow slowly, and therefore the gas spraying speed and pressure are reduced; and the sound pressure and the flow velocity of gas are weakened, so that the effects of silencing and low noise are achieved.

Description

Technical Field

[0001] This disclosure belongs to the field of compressor technology, specifically relating to a rotary compressor silencing and low-noise double-layer silencer and pump. Background Technology

[0002] The statements herein provide only background information in relation to this disclosure and do not necessarily constitute prior art.

[0003] During high-speed operation, the pump of a rotary compressor rotates under the drive of a motor. The vibration and noise generated during this high-speed operation are primarily due to the continuous intake and exhaust actions of the pump during this high-speed rotation. In this process, the pump compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant. The sound pressure effect generated by the high-speed movement of the gaseous refrigerant, along with the impact of the valve plates striking the valve seat, contributes to the noise. Therefore, a silencer is needed to mask the sound pressure effect generated by the high-speed movement of the gaseous refrigerant and the impact noise from the valve plates striking the valve seat. However, existing silencers are mostly single-layer designs, with relatively poor sound wave reflection and shielding performance, and relatively short gas exhaust paths. Utility Model Content

[0004] The purpose of this disclosure is to provide a rotary compressor silencer and pump with low noise double layer, which can at least solve one of the above-mentioned technical problems.

[0005] In the first aspect, the technical solution of this utility model provides a rotary compressor silencing and low-noise double-layer silencer, including an upper support and a silencer. The silencer includes an upper silencer and a lower silencer that are sequentially fitted onto the upper support from top to bottom. The lower silencer is provided with a semi-circular silencing channel. Multiple sets of annular baffles are spaced apart in the silencing channel, and each set of adjacent annular baffles forms an independent silencing chamber.

[0006] Furthermore, the upper support includes a mounting base and a mounting shaft, the mounting shaft being vertically disposed at the center of the mounting base, and the upper muffler and the lower muffler being coaxially disposed on the mounting shaft.

[0007] Furthermore, one end of the silencing channel is provided with a spherical chamber for gas to enter, and the other end is provided with an exhaust outlet for gas to enter the upper silencer.

[0008] Furthermore, the annular baffle inside the silencing channel is inclined to the rotation axis of the channel.

[0009] Furthermore, the annular baffle is configured in the shape of a frustum, with the upper base of the frustum facing the direction of the spherical cavity.

[0010] Furthermore, a gas chamber is formed by stamping on the upper muffler, which forms a sealed cavity with the lower muffler.

[0011] Furthermore, the opening of the spherical chamber on the lower silencer faces the surface of the mounting base.

[0012] Furthermore, the upper muffler is connected to the lower muffler and mounting base by bolts.

[0013] Furthermore, seals are provided between the contact surfaces of the upper and lower mufflers, as well as between the contact surface of the lower muffler and the mounting base.

[0014] Secondly, the present invention provides a rotary compressor pump, including a rotary compressor noise reduction and low-noise double-layer silencer as described in the first aspect.

[0015] The beneficial effects of one or more of the above technical solutions are as follows:

[0016] This disclosure uses a double-layered silencer. The lower silencer has a semi-circular silencing channel and multiple sets of annular baffles inside the silencing channel. Each set of annular baffles forms a silencing chamber, which slows down the flow of gas by blocking it in each silencing chamber between the annular baffles. This reduces the speed and pressure of the ejected gas, weakens the sound pressure and flow velocity of the gas, and thus achieves the effect of noise reduction. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the combination of the double-layer silencer and the upper support in one or more embodiments of this disclosure;

[0019] Figure 2 This is an exploded view of the double-layer silencer and upper support in one or more embodiments of this disclosure;

[0020] Figure 3 This is a top-view perspective view of the lower muffler in one or more embodiments of this disclosure;

[0021] Figure 4 This is a perspective view of the lower muffler in one or more embodiments of this disclosure, viewed from below.

[0022] Figure 5 This is a perspective view of the upper silencer in one or more embodiments of this disclosure, viewed from below.

[0023] In the diagram, 1 is the upper support; 2 is the upper silencer; 3 is the lower silencer; 4 is the silencer channel; 5 is the annular baffle; 6 is the silencer chamber; 7 is the gas chamber; 8 is the mounting base; and 9 is the mounting shaft. Detailed Implementation

[0024] like Figures 1-5 As shown, this embodiment provides a rotary compressor noise reduction dual-layer muffler, including an upper support 1 and a muffler. The upper support 1 includes a mounting base 8 and a mounting shaft 9. The mounting shaft 9 is vertically arranged at the center of the mounting base 8. The muffler includes an upper muffler 2 and a lower muffler 3, which are sequentially fitted onto the mounting shaft 9 of the upper support 1 from top to bottom.

[0025] like Figure 1 and Figure 2 As shown, the upper muffler 2 and the lower muffler 3 are coaxially arranged. Seals are provided between the contact surfaces of the upper muffler 2 and the lower muffler 3, as well as between the contact surface of the lower muffler 3 and the mounting base 8. The upper muffler 2 is connected to the lower muffler 3 and the mounting base 8 by bolts. The seals can effectively fill the tiny gaps between the contact surfaces, thereby ensuring that the sealing and sound insulation performance of the entire muffler system reaches the optimal state.

[0026] like Figure 3 and Figure 4 As shown, a semi-circular silencing channel 4 is provided on the lower silencer 3. Multiple sets of annular baffles 5 are spaced apart inside the silencing channel 4, and an independent silencing chamber 6 is formed between each adjacent set of annular baffles 5. One end of the silencing channel 4 is provided with a spherical chamber for gas to enter, and the opening of the spherical chamber is set towards the mounting base 8. The other end is provided with an exhaust outlet for gas to enter the upper silencer 2. The annular baffles 5 inside the silencing channel 4 are inclined to the rotation axis of the silencing channel 4. The annular baffles 5 themselves are set with a frustum-shaped structure, and the upper bottom of the frustum faces the direction of the spherical chamber.

[0027] Specifically, the high-temperature and high-pressure gas discharged by the pump due to rotary compression will not be directly discharged to the silencer. Instead, it will first pass through the lower silencer 3 with the silencer channel 4. The annular baffle 5 in the silencer channel 4 forces the gas to flow slowly by being blocked by each silencer chamber 6 between the annular baffles 5, thereby reducing the speed and pressure of the gas ejection. Finally, the gaseous refrigerant whose gas sound pressure and flow rate have been weakened by the silencer will be discharged normally to the silencer. As a result, the noise source will be greatly reduced, and the effect of noise reduction will be achieved.

[0028] like Figure 2 and Figure 5 As shown, a gas chamber 7 is formed by stamping on the upper silencer 2. After the upper silencer 2 and the lower silencer 3 come into contact and connect, a sealed cavity is formed, which is used to further slow down the flow of gas passing through the silencing channel 4 of the lower silencer 3.

[0029] In one typical embodiment of this utility model, this embodiment discloses a rotary compressor pump, including the above-mentioned rotary compressor noise reduction and low-noise double-layer silencer.

[0030] The working principle of this utility model:

[0031] When the rotary compressor is powered on, the pump rotates under the drive of the motor. During the high-speed rotation, the pump compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant. Noise is generated under the sound pressure of the high-speed gas and the action of the valve plate striking the valve seat. The gas passes through the silencing channel 4 set on the lower silencer 3, which forces the gas to be blocked by the silencing chamber 6 formed between the adjacent annular baffles 5 in the silencing channel 4, thereby reducing the speed and pressure of the gas ejection. Then, the gas flow is further slowed down by the gas chamber 7 set on the upper silencer 2. Finally, the gaseous refrigerant, whose sound pressure and flow rate have been weakened by the silencer, will be discharged back to the silencer normally. Thus, the noise source is greatly reduced, achieving the effect of silencing and reducing noise.

[0032] While the specific embodiments of this disclosure have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this disclosure. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this disclosure are still within the scope of protection of this disclosure.

Claims

1. A rotary compressor noise reduction double-layer silencer, characterized in that, It includes an upper support and a muffler. The muffler includes an upper muffler and a lower muffler that are sequentially fitted onto the upper support from top to bottom. The lower muffler is provided with a semi-circular silencing channel. Multiple sets of annular baffles are arranged at intervals in the silencing channel, and each set of adjacent annular baffles forms an independent silencing chamber.

2. The rotary compressor noise reduction double-layer silencer according to claim 1, characterized in that, The upper support includes a mounting base and a mounting shaft. The mounting shaft is vertically disposed at the center of the mounting base, and the upper muffler and the lower muffler are coaxially disposed on the mounting shaft.

3. The rotary compressor noise reduction double-layer silencer according to claim 1, characterized in that, One end of the silencing channel is provided with a spherical chamber for gas to enter, and the other end is provided with an exhaust outlet for gas to enter the upper silencer.

4. The rotary compressor noise reduction double-layer silencer according to claim 1, characterized in that, The annular baffle inside the silencing channel is inclined to the axis of rotation of the channel.

5. A rotary compressor noise reduction double-layer silencer according to claim 1, characterized in that, The annular baffle is shaped like a frustum, with the upper base of the frustum facing the spherical chamber.

6. A rotary compressor noise reduction double-layer silencer according to claim 1, characterized in that, The upper muffler has a gas chamber formed by stamping, which together with the lower muffler forms a sealed cavity.

7. A rotary compressor noise reduction double-layer silencer according to claim 1, characterized in that, The opening of the spherical chamber on the lower silencer faces the surface of the mounting base.

8. A rotary compressor noise reduction double-layer silencer according to claim 1, characterized in that, The upper silencer is connected to the lower silencer and mounting base by bolts.

9. A rotary compressor noise reduction double-layer silencer according to claim 1, characterized in that, A sealing element is provided between the contact surfaces of the upper and lower mufflers, as well as between the contact surface of the lower muffler and the mounting base.

10. A rotary compressor pump, characterized in that, The rotary compressor uses a low-noise double-layer silencer as described in any one of claims 1-9.

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