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CN-224228815-U - Sound insulation and noise reduction device for high-pressure cavity of compressor

CN224228815UCN 224228815 UCN224228815 UCN 224228815UCN-224228815-U

Abstract

The utility model relates to a sound insulation and noise reduction device for a high-pressure cavity of a compressor, which comprises an outer pipe body and an inner pipe body, wherein the outer pipe body is sleeved outside the inner pipe body, the top of the outer pipe body is higher than the top of the inner pipe body, an upper annular interlayer is arranged between the upper part of the circumferential surface of the inner pipe body and the inner wall of the outer pipe body, a lower annular interlayer is arranged between the bottom of the inner pipe body and the bottom of the outer pipe body, an annular lower cavity is formed by the outer pipe body, the inner pipe body, the upper annular interlayer and the lower annular interlayer in a jointly enclosed space, a plurality of ventilation holes are formed in the upper annular interlayer, the ventilation holes penetrate through the upper annular interlayer and are communicated with the lower cavity, the outer pipe body is provided with a pipe body air inlet corresponding to the air inlet of the high-pressure cavity, the pipe body air inlet penetrates through the side wall of the outer pipe body and is communicated with the lower cavity, the outer diameter of the outer pipe body corresponds to the inner diameter of the high-pressure cavity, and the inner diameter of the inner pipe body corresponds to the outer diameter of a screw connecting column, so that the sound insulation and noise reduction device is in interference fit with the high-pressure cavity.

Inventors

  • YUAN QINGQING
  • LI SHAOMING
  • CHEN GANG
  • LI JINGRUI
  • MENG BIGUANG

Assignees

  • 黄石东贝压缩机有限公司

Dates

Publication Date
20260512
Application Date
20250509

Claims (10)

  1. 1. The sound insulation and noise reduction device for the high-pressure cavity of the compressor is characterized by comprising an outer pipe body (1) and an inner pipe body (2), wherein the outer pipe body (1) is sleeved outside the inner pipe body (2), and the top of the outer pipe body (1) is higher than the top of the inner pipe body (2); An upper annular interlayer (3) is arranged between the upper part of the circumferential surface of the inner pipe body (2) and the inner wall of the outer pipe body (1), and a lower annular interlayer (4) is arranged between the bottom of the inner pipe body (2) and the bottom of the outer pipe body (1); the space enclosed by the outer pipe body (1), the inner pipe body (2), the upper annular interlayer (3) and the lower annular interlayer (4) together forms an annular lower chamber (5); a plurality of vent holes (6) are formed in the upper annular interlayer (3), and the vent holes (6) penetrate through the upper annular interlayer (3) and are communicated with the lower cavity (5); The outer pipe body (1) is provided with a pipe body air inlet hole (7) corresponding to the high-pressure cavity air inlet hole (10), and the pipe body air inlet hole (7) penetrates through the side wall of the outer pipe body (1) and is communicated with the lower cavity (5); The outer diameter of the outer tube body (1) corresponds to the inner diameter of the high-pressure cavity (9), and the inner diameter of the inner tube body (2) corresponds to the outer diameter of the screw connecting column (13), so that the sound insulation and noise reduction device is in interference fit with the high-pressure cavity (9).
  2. 2. Sound-and noise-reducing device according to claim 1, characterized in that all the ventilation holes (6) are distributed around the inner tube body (2).
  3. 3. A sound-insulating and noise-reducing device according to claim 2, characterized in that the ventilation holes (6) are arc-shaped holes.
  4. 4. Sound-and noise-reducing device according to claim 2, characterized in that all the ventilation holes (6) are symmetrically distributed with the central axis of the inner tube (2) as symmetry axis.
  5. 5. Sound-and noise-reducing device according to claim 1, characterized in that the area of the ventilation aperture (6) is < the area of the tube inlet aperture (7).
  6. 6. The sound insulation and noise reduction device according to claim 1, wherein the tube ventilation holes 7 are round holes.
  7. 7. Sound and noise reduction device according to claim 1, characterized in that the outer tube body (1), the inner tube body (2), the upper annular barrier (3), the lower annular barrier (4) are fixedly connected or integrally injection molded.
  8. 8. The sound and noise reduction device according to claim 1, wherein the sound and noise reduction device is made of PEEK material with good corrosion resistance, high temperature resistance and heat insulation.
  9. 9. Sound and noise reducing device according to claim 1, characterized in that the top of the inner tube (2) is higher than the top of the upper annular barrier (3).
  10. 10. The sound insulation and noise reduction device according to claim 1, wherein the connection positions of the outer pipe body (1) and the upper annular interlayer (3) and the lower annular interlayer (4) are respectively provided with radians; the connecting position between the inner pipe body (2) and the lower annular interlayer (4) is also provided with radian; the outer pipe body (1) and the inner pipe body (2) are both cylindrical.

Description

Sound insulation and noise reduction device for high-pressure cavity of compressor Technical Field The utility model relates to the field of compressors, in particular to a sound insulation and noise reduction device for a high-pressure cavity of a compressor. Background Noise is an important index for checking the quality of a compressor, and noise problems caused by exhaust pulsation are important in solving the noise of the compressor. The high-pressure cavity is designed on the cylinder seat of the compressor, and is used for connecting the exhaust end of the valve bank and the inner exhaust coil pipe 11, a screw connecting column 13 is arranged in the high-pressure cavity, the high-pressure cavity cover 12 seals the high-pressure cavity through the screw connecting column 13, a fastening screw 14 and an annular sealing gasket 15, the fastening screw 14 and the screw connecting column 13 are in threaded connection, the screw connecting column 13 is provided with an inner thread corresponding to the fastening screw 14, the sealing gasket 15 seals a gap between the high-pressure cavity cover 12 and the high-pressure cavity, the high-pressure cavity cover is additionally provided with an inner exhaust coil pipe which is communicated with the inner space of the high-pressure cavity and an external refrigerating system, and the exhaust end of the valve bank is communicated with the inner part of the high-pressure cavity through the air inlet hole 10 of the high-pressure cavity. The high-temperature and high-pressure gas from the exhaust end of the valve bank enters the high-pressure cavity 9 through the high-pressure cavity air inlet hole 10 and then expands and compresses, and then is discharged from the inner exhaust coil 11 to the refrigerating system outside the compressor. However, the high-temperature and high-pressure gas flowing in the high-pressure chamber 9 tends to be accompanied by exhaust pulsation having a large amplitude, and thus, there is a large noise. In addition, in the prior art, the high-pressure cavity 9 is used as a part of the cylinder seat, is close to the cylinder end (shown in figure I) of the cylinder seat, and the cylinder seat is made of gray iron as a main material and has good heat transfer performance. When the high-temperature high-pressure air flows through the high-pressure cavity air inlet hole 10 and enters the high-pressure cavity, the heat transfer effect in the high-pressure cavity can raise the temperature of the cylinder head of the cylinder seat, so that the suction temperature of the cylinder head can be influenced, and the suction overheat can reduce the refrigerating capacity of the compressor. In view of the regular cylindrical shape of the volume inside the high pressure chamber, the damping effect on the exhaust pulsation is not exerted to the maximum. There is no related improvement to solve the above problems. The applicant has developed that it is possible to continue to optimise the internal shape and structure, further reducing the noise problems caused by exhaust pulsations. Thereby realizing the utilization of the volume change of the high-pressure cavity to improve the noise problem caused by the pulsation of the high-temperature high-pressure air flow. And the technical scheme of reducing the exhaust pulsation by changing the internal volume of the high-pressure cavity does not exist at present, so that the sound insulation and noise reduction are realized. Disclosure of utility model In view of the above problems, the present utility model provides a sound insulation and noise reduction device for a high pressure chamber of a compressor, so as to overcome the above disadvantages of the prior art: The sound insulation and noise reduction device for the high-pressure cavity of the compressor comprises an outer pipe body and an inner pipe body, wherein the outer pipe body is sleeved outside the inner pipe body, and the top of the outer pipe body is higher than the top of the inner pipe body; an upper annular interlayer is arranged between the upper part of the circumferential surface of the inner pipe body and the inner wall of the outer pipe body, and a lower annular interlayer is arranged between the bottom of the inner pipe body and the bottom of the outer pipe body; the space enclosed by the outer pipe body, the inner pipe body, the upper annular interlayer and the lower annular interlayer together forms an annular lower chamber; The upper annular interlayer is provided with a plurality of vent holes which penetrate through the upper annular interlayer and are communicated with the lower chamber; The outer pipe body is provided with a pipe body air inlet corresponding to the air inlet of the high-pressure cavity, and the pipe body air inlet penetrates through the side wall of the outer pipe body and is communicated with the lower cavity; The outer diameter of the outer tube body corresponds to the inner diameter of the high-pressure cavity, and th