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CN-122014614-A - Variable-capacity compressor and air conditioner

CN122014614ACN 122014614 ACN122014614 ACN 122014614ACN-122014614-A

Abstract

The invention provides a variable-volume compressor and an air conditioner, wherein the variable-volume compressor comprises a second cylinder and a second flange, a pin hole is formed in the second flange, a first pin valve is arranged in the pin hole, one end of the pin hole is connected with a variable-volume cavity, a first pressure relief channel and a pin valve mounting hole are formed in the first pin valve, the first pressure relief channel is communicated with the variable-volume cavity, the second pin valve is arranged in the pin valve mounting hole, one end of the second pin valve is relatively communicated with the first pressure relief channel so as to bear the pressure in the variable-volume cavity, the other end of the second pin valve can be introduced into the shell cavity of the compressor to serve as back pressure, a second pressure relief channel is formed in the second flange, one end of the second pressure relief channel is communicated with the shell cavity of the compressor, and the other end of the second pressure relief channel can be communicated with the variable-volume cavity through the pin valve mounting hole and the first pressure relief channel so as to relieve the pressure in the variable-volume cavity. According to the invention, the problems of noise, vibration and the like generated when the variable-capacity compressor is started after standing for a long time at a low temperature can be solved.

Inventors

  • QUE PEIZHEN
  • HU YANJUN
  • NIU YUTING
  • HUANG YAN

Assignees

  • 珠海凌达压缩机有限公司

Dates

Publication Date
20260512
Application Date
20260225

Claims (11)

  1. 1. A variable capacity compressor is characterized by comprising: A second air cylinder (2) and a second flange (29), wherein a second sliding sheet (4) and a variable-volume cavity (5) are arranged on the second air cylinder (2), the tail part of the second sliding sheet (4) is communicated with the variable-volume cavity (5), The second flange (29) with the axial one end of second cylinder (2) is linked together, be provided with pinhole (7) on second flange (29), be provided with first round pin valve (10) and second round pin valve (14) in pinhole (7), the one end of pinhole (7) with the pressure in variable volume chamber (5) meets, the inside of first round pin valve (10) has first pressure release passageway (6) and round pin valve mounting hole (24), first pressure release passageway (6) with variable volume chamber (5) intercommunication, second round pin valve (14) set up in round pin valve mounting hole (24), the one end of second round pin valve (14) with first pressure release passageway (6) relatively communicate in order to bear the pressure in the variable volume chamber (5), the other end of second round pin valve (14) can introduce the pressure in the shell cavity (9) of compressor as pressure, be provided with second passageway (8) on second flange (29), second passageway (8) can be through pressure release passageway (8) and the other end of second round pin valve (6) can be to the variable volume chamber (5).
  2. 2. The variable capacity compressor as claimed in claim 1, wherein: The first pressure relief channel (6) extends towards the inside of first round pin valve (10) from the one end of first round pin valve (10), second pressure relief channel (8) follow the peripheral wall of second flange (29) towards the inside of second flange (29) extend to with pinhole (7) intercommunication, be provided with side relief hole (31) on first round pin valve (10), the radially inner of side relief hole (31) with round pin valve mounting hole (24) are relative and intercommunication, the radially outer end of side relief hole (31) can with second pressure relief channel (8) are relative and intercommunication.
  3. 3. The variable capacity compressor as claimed in claim 2, wherein: The first pin valve (10) is of a columnar structure, the first pressure relief channel (6) extends along the axial direction of the first pin valve (10), the lateral pressure relief holes (31) extend along the radial direction of the first pin valve (10), the lateral pressure relief holes (31) are multiple, and the lateral pressure relief holes (31) are arranged at intervals along the circumferential direction of the first pin valve (10); The outer peripheral wall of the first pin valve (10) is also provided with an annular groove (32), and the annular groove (32) is connected and communicated with the radial outer ends of the lateral pressure relief holes (31).
  4. 4. The variable capacity compressor as claimed in claim 2, wherein: When second round pin valve (14) move to with side direction relief hole (31) when being relative, can shelter from side direction relief hole (31) so that first relief passage (6) with second relief passage (8) disconnection communicates, when second round pin valve (14) move to not with side direction relief hole (31) when being relative, second round pin valve (14) do not shelter from side direction relief hole (31) so that varactor cavity (5) with first relief passage (6) pin valve mounting hole (24) lateral direction relief hole (31) and second relief passage (8) can communicate in proper order, with fluid pressure release in varactor cavity (5) is in shell cavity (9) of compressor.
  5. 5. The variable capacity compressor as claimed in claim 4, wherein: The device further comprises a cover plate (34), wherein a back pressure channel (13) is arranged on the cover plate (34), the second pin valve (14) comprises a first end (11) and a second end (12) which are opposite, the first end (11) is opposite to the first pressure release channel (6) so as to bear the pressure of the variable volume cavity (5), and the second end (12) is opposite to the back pressure channel (13) so as to bear the pressure of the shell cavity (9); one end of the back pressure channel (13) is communicated with the pin valve mounting hole (24), and the other end of the back pressure channel (13) is communicated with the shell chamber (9) so that the pressure introduced into the shell chamber (9) can enter the pin valve mounting hole (24) and act on the second end (12) of the second pin valve (14).
  6. 6. The variable capacity compressor as claimed in claim 5, wherein: The second pin valve (14) is provided with an elastic element mounting hole (37) towards one side end face of the cover plate (34), a first elastic element (25) can be arranged in the elastic element mounting hole (37), one end of the first elastic element (25) is arranged in the elastic element mounting hole (37), the other end of the first elastic element (25) is abutted to the cover plate (34), and the first elastic element (25) can apply elastic force towards the direction of the first pressure relief channel (6) to the second pin valve (14).
  7. 7. The variable capacity compressor as claimed in claim 6, wherein: The pin valve mounting hole (24) is connected with the first pressure relief channel (6) along the axial direction of the first pin valve (10), the inner diameter of the pin valve mounting hole (24) is larger than the inner diameter of the first pressure relief channel (6) so as to form a first step surface (33) at the joint of the pin valve mounting hole and the first pressure relief channel, When the second pin valve (14) moves to be in contact with the first step surface (33), the first pressure relief channel (6) and the pin valve mounting hole (24) are disconnected, and when the second pin valve (14) moves to be not in contact with the first step surface (33), the first pressure relief channel (6) and the pin valve mounting hole (24) can be communicated.
  8. 8. The variable capacity compressor as claimed in claim 7, wherein: The second cylinder (2) is located at the upper end of the second flange (29), the upper end of the second pin valve (14) is the first end (11) so as to bear downward pressure F1 on the second cylinder in the variable volume cavity (5), the lower end of the second pin valve (14) is the second end (12), the second end (12) can bear upward pressure F2 on the second cylinder in the back pressure channel (13), the pressure in the back pressure channel (13) is equal to the pressure in the shell cavity (9), and the second pin valve (14) also bears upward elastic force G exerted on the second pin valve by the first elastic element (25); When the force exerted by the second pin valve (14) is F1< F2+G, the second pin valve (14) can move upwards to be connected with the first step surface (33) and close the communication between the variable volume cavity (5) and the shell cavity (9) through the second pin valve (14), and when the force exerted by the second pin valve (14) is F1> F2+G, the second pin valve (14) can move downwards to be communicated with the pin valve mounting hole (24) and the lateral pressure relief hole (31) oppositely, and the communication between the variable volume cavity (5) and the shell cavity (9) is opened through the second pin valve (14), so that the variable volume cavity (5) can relieve fluid into the shell cavity (9) through the first pressure relief channel (6), the pin valve mounting hole (24), the lateral pressure relief hole (31) and the second pressure relief channel (8).
  9. 9. The variable capacity compressor as claimed in claim 5, wherein: the first pin valve (10) comprises a first shaft section and a second shaft section, the outer diameter of the first shaft section is smaller than that of the second shaft section, a second step surface (35) is formed at the joint position of the outer periphery of the first shaft section and the outer periphery of the second shaft section, the first shaft section is close to the second cylinder (2) relative to the second shaft section, a second elastic element (26) is sleeved on the outer periphery of the first shaft section, one end of the second elastic element (26) is connected with the second step surface (35), the pin hole (7) comprises a first section hole and a second section hole which are connected along the axial direction of the pin hole, the inner diameter of the first section hole is smaller than that of the second section hole relative to the second section hole, a third step surface (36) is formed at the joint position of the first shaft section and the second shaft section, and the other end of the second elastic element (26) is connected with the third step surface (36), and the second elastic element (26) can exert elastic force on the first pin valve (10) towards the cover plate.
  10. 10. The variable capacity compressor as claimed in claim 1, wherein: The second cylinder (2) is further provided with a variable volume opening (16) and a communication channel (17), the variable volume opening (16) is formed in the direction from the radial outer end of the second cylinder (2) to the inside, the variable volume opening (16) and the variable volume cavity (5) are located at different circumferential positions on the second cylinder (2), the variable volume opening (16) and the variable volume cavity (5) are communicated through the communication channel (17), the variable volume opening (16) can be connected into fluids with different pressures outside the variable volume compressor, so that the second pin valve (14) is used for closing the communication between the first pressure relief channel (6) and the second pressure relief channel (8), at the moment, the second sliding vane (4) is not connected with the second roller (18), or the second pin valve (14) is used for opening the communication between the first pressure relief channel (6) and the second pressure relief channel (8) so as to enable the second sliding vane (4) to be connected with the second roller (8).
  11. 11. An air conditioner comprising the variable capacity compressor as claimed in any one of claims 1 to 10.

Description

Variable-capacity compressor and air conditioner Technical Field The invention belongs to the technical field of compressors, and particularly relates to a variable-capacity compressor and an air conditioner. Background The rolling rotor type compressor has the outstanding advantages of small volume, simple structure and the like, and is widely applied to the fields of household air conditioners, household multi-split air conditioners and the like. Under the application scene of the household multi-split air conditioner, 1 external machine is simultaneously connected with a plurality of internal machines. When the internal machines are all started, the external machines are required to run at full load, and when the internal machines are all started, the internal machines are required to run at low load. Based on the characteristics that the load change is large when the domestic multi-split air conditioner operates, the frequency conversion technology can meet the use requirement to a certain extent, but when the internal air conditioner is smaller, the problem that the cooling capacity supply is larger than the cooling capacity supply required still occurs when the compressor operates to the lower frequency limit, and the compressor is frequently started and stopped at the moment, so that the indoor environment temperature fluctuation is large, and the power consumption of a unit is increased. On the basis of using a variable frequency technology in a rolling rotor type compressor, a selectively working variable-volume cylinder is arranged on a pump body, when the small load operation is required, the variable-volume cylinder does not work, when the large load operation is required, the variable-volume cylinder works, the minimum load of a unit is greatly reduced, and the problem of frequent start-up and shutdown of the unit under the operation condition of small load such as single-start 1 internal unit is solved. Pressure pulsation in the variable volume cavity has no influence on operation stability under most operation conditions of the household multi-split air conditioner. However, when the outdoor unit is placed at a low temperature for a long time, the refrigerant in the unit is changed from a gaseous state to a liquid state. After the unit is started, a large amount of liquid refrigerant is sucked into the compressor and is guided to the variable-volume cavity through the variable-volume opening, and as the liquid refrigerant has incompressible characteristics, the pressure in the variable-volume cavity changes rapidly along with the reciprocating motion of the second sliding vane, so that the compressor shakes severely and noise is generated, and the operation safety of the unit and the use comfort of the unit are seriously affected. Because the variable-capacity compressor in the prior art has the technical problems of easy noise, shake and the like when being started after standing for a long time at low temperature, the invention designs the variable-capacity compressor and the air conditioner. Disclosure of Invention Therefore, the invention provides a variable-capacity compressor and an air conditioner, which can solve the technical problems that the variable-capacity compressor in the prior art is easy to generate noise and shake when being started after standing for a long time at low temperature. In order to solve the above problems, the present invention provides a variable capacity compressor comprising: The second cylinder and the second flange are provided with a second sliding vane and a variable-volume cavity, the tail part of the second sliding vane is communicated with the variable-volume cavity, The second flange is connected with one axial end of the second cylinder, a pin hole is formed in the second flange, a first pin valve is arranged in the pin hole, one end of the pin hole is connected with the variable volume cavity, a first pressure relief channel and a pin valve mounting hole are formed in the first pin valve, the first pressure relief channel is communicated with the variable volume cavity, the second pin valve is arranged in the pin valve mounting hole, one end of the second pin valve is relatively communicated with the first pressure relief channel to bear the pressure in the variable volume cavity, the other end of the second pin valve can be used for introducing the pressure in a shell cavity of the compressor to serve as back pressure, a second pressure relief channel is arranged on the second flange, one end of the second pressure relief channel is communicated with the shell cavity of the compressor, and the other end of the second pressure relief channel can be communicated with the variable volume cavity through the pin valve mounting hole and the first pressure relief channel to relieve the pressure in the variable volume cavity. In some embodiments of the present invention, in some embodiments, The first pressure release channel is followed the one end of f