CN-117052659-B - Scroll compressor having a rotor with a rotor shaft having a rotor shaft with a

CN117052659BCN 117052659 BCN117052659 BCN 117052659BCN-117052659-B

Abstract

The application relates to a scroll compressor, which comprises a fixed disc, a movable disc, a machine body and a crankshaft, wherein the fixed disc and the machine body are respectively arranged on two sides of the movable disc, the fixed disc and the movable disc jointly define a compression cavity, the crankshaft is arranged on the machine body and connected with the movable disc to drive the movable disc to translate relative to the fixed disc, and an air injection enthalpy increasing channel is arranged on the machine body and is used for inputting refrigerant from the outside. According to the scroll compressor, the jet enthalpy-increasing channel of the scroll compressor is arranged on the machine body and is positioned in the low-temperature area of the scroll compressor, so that the heating of the enthalpy-increasing gas by the high temperature inside the scroll compressor can be avoided, and the air supplementing effect can be improved.

Inventors

DONG MINGZHU
HU YUSHENG
WEI HUIJUN
LIU YUN
SHI QINGQING
ZHOU DAN

Assignees

珠海格力电器股份有限公司

Dates

Publication Date: 20260508
Application Date: 20230828

Claims (9)

1. A scroll compressor, comprising: The device comprises a fixed disc, a movable disc, a machine body and a crankshaft, wherein the fixed disc and the machine body are respectively arranged on two sides of the movable disc, the fixed disc and the movable disc jointly define a compression cavity, the crankshaft is arranged on the machine body and connected with the movable disc to drive the movable disc to translate relative to the fixed disc, an air injection enthalpy-increasing channel is arranged on the machine body and is communicated with the compression cavity, and the air injection enthalpy-increasing channel is used for inputting a refrigerant from the outside; a first air supplementing channel is arranged on the fixed disc or the movable disc, and the air injection enthalpy increasing channel, the first air supplementing channel and the compression cavity are sequentially communicated; the jet enthalpy increasing channel comprises a second air supplementing channel and an air supplementing check cavity, and the second air supplementing channel, the air supplementing check cavity and the first air supplementing channel are sequentially communicated; The machine body is also provided with a medium-pressure cavity, the medium-pressure cavity is communicated with the air supplementing check cavity through a second conduction channel, the medium-pressure cavity is used for accommodating medium-pressure back pressure, and the medium-pressure cavity and the air supplementing check cavity are of the same pressure and are of air supplementing medium-pressure.
2. The scroll compressor of claim 1, wherein, The enhanced vapor injection channel comprises an inlet end, wherein the inlet end is used for inputting the refrigerant from the outside, a gas supplementing check valve is arranged in the enhanced vapor injection channel and comprises a movable part, and at least one part of the movable part is configured to be selectively moved towards the inlet end to close the enhanced vapor injection channel or move away from the inlet end to conduct the enhanced vapor injection channel.
3. The scroll compressor of claim 2, wherein, The air supplementing check valve comprises a limiting part, a movable part and an elastic part, wherein two ends of the elastic part are respectively connected with the movable part and the machine body, the limiting part is arranged on one side, close to the inlet end, of the movable part, the elastic part is deformable, and the movable part can move to a position where the limiting part is stopped and a position where the limiting part is spaced.
4. The scroll compressor of claim 2, wherein the second air make-up passage defines the inlet end, the air make-up check valve being provided at an inlet of the air make-up check chamber.
5. The scroll compressor of claim 4, wherein, The jet enthalpy-increasing channel further comprises a gas-supplementing buffer cavity, and the second gas-supplementing channel, the gas-supplementing buffer cavity, the gas-supplementing check cavity and the first gas-supplementing channel are sequentially communicated.
6. The scroll compressor of claim 5, wherein, The air supplementing buffer cavities comprise a plurality of air supplementing buffer cavities which are adjacent to each other and communicated through a first conducting channel, and the air supplementing check cavity is at least communicated with one air supplementing buffer cavity through the air supplementing check valve.
7. The scroll compressor of claim 5, wherein, The air supplementing check valve comprises a limit baffle, a fixing part and a movable part, wherein the fixing part is connected with the limit baffle, the movable part is connected with the machine body, the limit baffle is used for blocking an inlet of the air supplementing check cavity, a third conduction channel is arranged on the limit baffle, the movable part is arranged in the air supplementing check cavity, the movable part is provided with a first position abutted to the limit baffle and a second position at least spaced with a part of the limit baffle, the movable part is located at the first position and shields the third conduction channel, and the movable part is located at the second position and shields the third conduction channel.
8. The scroll compressor of any one of claims 4 to 7, wherein, The machine body is provided with a mounting groove, a support cover plate is arranged in the mounting groove, one side of the support cover plate is in butt joint with the movable disc, a low-pressure throttling channel is arranged on the support cover plate, a high-pressure throttling channel is arranged on the fixed disc, and the low-pressure throttling channel is communicated with the high-pressure throttling channel.
9. The scroll compressor of claim 1, wherein, The medium-pressure cavity is one or more, the medium-pressure cavity and the air supplementing check cavity are arranged at intervals, and when the medium-pressure cavity is a plurality of medium-pressure cavities, the medium-pressure cavities are communicated through a fourth conduction channel.

Description

Scroll compressor having a rotor with a rotor shaft having a rotor shaft with a Technical Field The application relates to the technical field of scroll compressors, in particular to a scroll compressor. Background In order to improve the heat supply capacity of a heat pump system in a low-temperature environment and realize ultra-low-temperature rapid heating, an enthalpy-increasing scroll compressor is widely applied to various heat pump systems such as a multi-connected system, refrigeration and refrigeration systems, vehicle-mounted air conditioners and the like. Along with the improvement of people on energy conservation and environmental protection consciousness, the efficient heat pump system gradually becomes a dominant part of the market. As a quasi-two-stage compression enthalpy-increasing vortex compressor technology, medium-pressure refrigerant directly enters a compression cavity through an enthalpy-increasing pipeline and is mixed with high-temperature refrigerant in the compression cavity for compression, so that the cooling effect on the compressor cavity is realized. The scheme adopted in the prior art is that an enthalpy-increasing channel is arranged on the side of a compressor fixed disc, and because the enthalpy-increasing channel of the compressor is arranged on the high-temperature side of exhaust gas of the compressor, the enthalpy-increasing gas can be heated by the high temperature of the exhaust gas when passing through the enthalpy-increasing channel, and the air supplementing effect is affected. Disclosure of Invention The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the vortex compressor, wherein the jet enthalpy increasing channel of the vortex compressor is arranged on the engine body and is positioned in the low-temperature area of the vortex compressor, so that the heating of the enthalpy increasing gas by the internal high temperature of the vortex compressor can be avoided, and the air supplementing effect can be improved. The vortex compressor comprises a fixed disc, a movable disc, a machine body and a crankshaft, wherein the fixed disc and the machine body are respectively arranged on two sides of the movable disc, the fixed disc and the movable disc jointly define a compression cavity, the crankshaft is arranged on the machine body and connected with the movable disc to drive the movable disc to translate relative to the fixed disc, an air injection enthalpy increasing channel is arranged on the machine body and is communicated with the compression cavity, and the air injection enthalpy increasing channel is used for inputting refrigerant from the outside. According to the scroll compressor of the present invention, the enhanced vapor injection passage includes an inlet port for externally inputting the refrigerant, and a gas-supplementing check valve is provided in the enhanced vapor injection passage, and the gas-supplementing check valve includes a movable portion, at least a part of which is configured to be selectively movable toward the inlet port to close the enhanced vapor injection passage or away from the inlet port to conduct the enhanced vapor injection passage. According to the scroll compressor disclosed by the invention, the air supplementing check valve comprises the limiting part, the movable part and the elastic part, wherein the two ends of the elastic part are respectively connected with the movable part and the machine body, the limiting part is arranged on one side, close to the inlet end, of the movable part, the elastic part can deform, and the movable part can move to a position for abutting against the limiting part and a position for spacing. According to the scroll compressor disclosed by the invention, the fixed disc or the movable disc is provided with the first air supplementing channel, and the air injection enthalpy increasing channel, the first air supplementing channel and the compression cavity are sequentially communicated. Optionally, the jet enthalpy increasing channel comprises a second air supplementing channel and an air supplementing check cavity, the second air supplementing channel, the air supplementing check cavity and the first air supplementing channel are sequentially communicated, the second air supplementing channel defines the inlet end, and the air supplementing check valve is arranged at the inlet of the air supplementing check cavity. Optionally, the jet enthalpy-increasing channel further comprises a gas-supplementing buffer cavity, and the second gas-supplementing channel, the gas-supplementing buffer cavity, the gas-supplementing check cavity and the first gas-supplementing channel are sequentially communicated. Optionally, the air-supplementing buffer cavities include a plurality of air-supplementing buffer cavities adjacent to each other are communicated through a first conduction channel, and the air-supplementing check c