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CN-122014557-A - Energy adjusting device of refrigeration compressor

CN122014557ACN 122014557 ACN122014557 ACN 122014557ACN-122014557-A

Abstract

The invention relates to the technical field of compressor energy regulation, and discloses a refrigerating compressor energy regulating device, wherein the compressor is provided with a plurality of groups of cylinder covers, the energy regulating device is arranged on the cylinder covers of the compressor and comprises an electromagnetic valve body and a control piston, an air suction channel is arranged between an air suction cavity and a compression cavity of the compressor, the control piston is controlled by the electromagnetic valve to switch the air suction channel into an open state, an orifice is arranged on the control piston, the air suction channel is in an open state when the compressor is in a full-load running state, and the air suction channel on the corresponding cylinder cover is closed by the control piston when the compressor is in a partial-load running state, and the compressor piston runs in an idle state under the condition of no gas compression. The invention realizes the optimization of cooling and lubrication, and the low-pressure gas circulation can effectively take away the friction heat and residual heat of the cylinder, ensure the proper temperature of the cylinder, maintain the optimal state of oil film lubrication and avoid lubrication failure and abrasion increase caused by thinning, evaporation or carbonization of lubricating oil.

Inventors

  • LIANG XIN
  • YU YOUFA
  • SHEN HONG
  • WANG JIEFENG
  • LI JIAQIN

Assignees

  • 浙江博莱特制冷设备有限公司

Dates

Publication Date
20260512
Application Date
20260302

Claims (10)

  1. 1. A refrigerating compressor energy conditioning device, the compressor having a plurality of groups of cylinder heads (1), the energy conditioning device being mounted on the cylinder heads (1) of the compressor, characterized in that it comprises: An air suction channel (17) is arranged between an air suction cavity (5) and a compression cavity of the compressor, the control piston (9) is controlled by an electromagnetic valve to switch the air suction channel (17) in an open-closed state, and an orifice (10) is arranged on the control piston (9); When the compressor is in a full-load operation state, the air suction channel (17) is in an open state, and when the compressor is in a partial-load operation state, the air suction channel (17) on the corresponding cylinder cover (1) is closed by the control piston (9), and the compressor piston (3) runs in an idle state under the condition of no gas compression.
  2. 2. A refrigerating compressor energy regulating device according to claim 1, characterized in that the solenoid valve body (8) is mounted on the cylinder head (1), the solenoid valve body (8) comprising a valve seat, a solenoid valve coil (6) and a solenoid valve spool (7), the solenoid valve body (8) controlling the movement of the control piston (9) through the solenoid valve coil (6).
  3. 3. A refrigerating compressor energy regulating device according to claim 2, characterized in that the valve plate (2) is arranged inside the cylinder of the compressor, and that the valve plate (2) and the suction channel (17) are simultaneously in an open state when the compressor is in a full-load operating state.
  4. 4. A refrigerating compressor energy regulating device according to claim 1, characterized in that the cross-sectional shape of the throttle hole (10) on the control piston (9) is L-shaped, the inner diameter of the throttle hole (10) being 1.5mm-2.5mm.
  5. 5. A refrigerating compressor energy regulating device according to claim 2, characterized in that the cylinder head (1) is provided with a sliding sleeve (14) for controlling the movable mounting of the piston (9), and a return spring (11) for controlling the return of the piston (9) is provided in the sliding sleeve (14).
  6. 6. The energy adjusting device of a refrigeration compressor according to claim 5, wherein a movable cavity (16) is arranged in the sliding sleeve (14), a first communication cavity (12) and a second communication cavity (13) are arranged between the exhaust cavity (4) and the movable cavity (16), and the solenoid valve core (7) is arranged at the joint of the first communication cavity (12) and the second communication cavity (13).
  7. 7. A refrigerating compressor energy regulating device according to claim 6, characterized in that when the control piston (9) is in the closed state, the first communication channel (12) and the second communication channel (13) are in the communication state, and the gas of the discharge chamber (4) provides a pressing force to the control piston (9) through the first communication channel (12) and the second communication channel (13).
  8. 8. A refrigerating compressor energy regulating device according to claim 1, characterized by comprising a controller for controlling the operation of the compressor and the solenoid valve body (8), said controller being adapted to determine whether the compressor is in a full-load operating state and to output a control signal to the solenoid valve body (8).
  9. 9. A refrigerating compressor energy regulating device according to claim 1, characterized in that the cylinder head (1) is provided with an internally threaded hole, and the solenoid valve body (8) is mounted on the solenoid valve body (8) by means of a mounting bolt (15) cooperating with the internally threaded hole.
  10. 10. A refrigerating compressor energy conditioning apparatus according to claim 9, characterized in that the compressor comprises a suction chamber (5) and a discharge chamber (4), a suction channel (17) being provided between the suction chamber (5) and the discharge chamber (4).

Description

Energy adjusting device of refrigeration compressor Technical Field The invention relates to the technical field of compressor energy adjustment, in particular to an energy adjustment device of a refrigeration compressor. Background The working principle of the piston compressor is that a rotor which rotates is used for replacing a piston which reciprocates, and a sliding vane fixed on a cylinder is added to form a working cavity which changes periodically so as to realize gas compression. The piston compressor works to adapt to the load change of the refrigerating system, and needs to have certain energy adjusting capacity, and the common energy adjusting mode is to adjust the pressure in the cylinder by adjusting the opening and closing of a valve plate at the end part of the cylinder. The prior art provides a cylinder energy adjusting device of compressor, application number is CN201210496441.6, including vertical cylinder, horizontal pneumatic cylinder and valve block of breathing in, the cylinder body outer wall rotation of cylinder is connected the swivel becket, the swivel becket has the chute, connect the ejector pin in the chute, ejector pin fixed connection the valve block of breathing in. The hydraulic cylinder comprises a cylinder body and a piston, wherein the cylinder body is connected with the piston by means of a spring, the piston is fixedly connected with a push rod, the push rod is connected with a rotating rod, and the rotating rod is fixedly connected with the rotating ring. The invention has the advantages of simple structure, reliable operation, flexible control and simple operation compared with the traditional energy adjusting device of the piston compressor. However, the prior art, in particular this solution, still has the following problems: The energy adjustment is carried out by a piston push rod mechanism connected with a horizontal hydraulic cylinder and a spring, the hydraulic system possibly has leakage risk, the response speed is slower, the adjustment precision is affected by a mechanical clearance, the fine partial load operation is not facilitated, meanwhile, the cylinder cannot be effectively cooled by low-pressure gas in the prior art during the partial load, the temperature of the cylinder is easily increased, and a lubricating oil film is easily deteriorated, so that the overall reliability and the service life of the compressor are affected. Disclosure of Invention The invention aims to provide a technical scheme, wherein the opening and closing states of the air suction channel are controlled by controlling the piston, so that the problems in the prior art are solved. In order to achieve the above purpose, the invention adopts the following technical scheme: A refrigerant compressor energy conditioner having a plurality of cylinder heads, the energy conditioner being mounted to the cylinder heads of the compressor, comprising: The control piston is controlled by the electromagnetic valve to switch the open-close state of the air suction channel, and the control piston is provided with an orifice; when the compressor is in a full-load operation state, the air suction channel is in an open state, and when the compressor is in a partial-load operation state, the air suction channel on the corresponding cylinder cover is closed by the control piston, and the compressor piston runs in an idle state under the condition of no gas compression. Preferably, the electromagnetic valve body is arranged on the cylinder cover, and comprises a valve seat, an electromagnetic valve coil and an electromagnetic valve core, and the electromagnetic valve body is used for controlling the movement of the control piston through the electromagnetic valve coil. Preferably, a valve plate is arranged in the cylinder of the compressor, and when the compressor is in a full-load running state, the valve plate and the air suction channel are simultaneously in an open state. Preferably, the cross section of the throttle hole on the control piston is L-shaped, and the inner diameter of the throttle hole is 1.5mm-2.5mm. Preferably, a sliding sleeve for controlling the movable installation of the piston is arranged on the cylinder cover, and a reset spring for controlling the reset of the piston is arranged in the sliding sleeve. Preferably, a movable cavity is arranged in the sliding sleeve, a first communication cavity channel and a second communication cavity channel are arranged between the exhaust cavity and the movable cavity, and the valve core of the electromagnetic valve is arranged at the joint of the first communication cavity channel and the second communication cavity channel. Preferably, when the control piston is in the closed state, the first communicating channel and the second communicating channel are in the communicating state, and the gas in the exhaust cavity provides a downward pressure for the control piston through the first communicating channel and the second communicating