CN-224214375-U - Oil content structure of exhaust cover of scroll compressor

CN224214375UCN 224214375 UCN224214375 UCN 224214375UCN-224214375-U

Abstract

The utility model discloses an oil content structure of an exhaust cover of a scroll compressor, which comprises an exhaust cover main body, wherein an exhaust channel is arranged in the middle of the inner side of the exhaust cover main body, an exhaust small hole is formed in the exhaust cover main body above the exhaust channel, an oil return cavity is formed in the bottom of the exhaust channel, the inner wall of one end, close to the oil return cavity, of the exhaust channel is a conical surface, and an oil content insertion pipe is arranged above the inner part of the exhaust channel. According to the oil content cannula, the bottom of the oil content cannula is provided with the four inclined slots, the slotting direction of the inclined slots is the same as the rotation direction of the oil-gas mixture, and the center line of the oil content cannula is not simple, because the density of refrigerant is smaller, part of refrigerant can enter the oil content cannula in advance along with the chute, and the frozen oil can enter the oil return cavity along with the wall surface of the oil return channel under the action of centrifugal force, gravity and surface tension due to the larger density, so that a better oil content effect is realized.

Inventors

He Chunpei
HUANG XIAOLAN
CAO LIANJIE
YANG YANG
XU TAOTAO
Gan Jiechao
WU JIEJUN
ZHANG JING
LAN QI

Assignees

浙江威乐新能源压缩机有限公司

Dates

Publication Date: 20260508
Application Date: 20250523

Claims (4)

1. The oil component structure of the exhaust cover of the scroll compressor comprises an exhaust cover main body (1) and is characterized in that an exhaust channel (2) is arranged in the middle of the inner side of the exhaust cover main body (1), an exhaust small hole (3) is formed in the upper part of the exhaust channel (2) in the exhaust cover main body (1), an oil return cavity (4) is formed in the bottom of the exhaust channel (2), a conical surface (5) is arranged on the inner wall of one end, close to the oil return cavity (4), of the exhaust channel (2), and an oil component insertion pipe (6) is arranged above the inner part of the exhaust channel (2); The oil content intubate (6) includes intubate main part (61), the top of intubate main part (61) is provided with fitting surface (62), the middle part of intubate main part (61) is provided with oil content face (64), be provided with Bezier curve transition surface (63) between fitting surface (62) and oil content face (64), a plurality of oblique slots (65) have been seted up to the bottom circumference of intubate main part (61).
2. A scroll compressor discharge cover oil structure according to claim 1, wherein the discharge passage (2) communicates with the oil return chamber (4) at a tip end portion of the conical surface (5).
3. A scroll compressor discharge cover oil structure according to claim 1, wherein the grooving direction of the plurality of chute slits (65) is the same as the rotation direction of the oil-gas mixture.
4. A scroll compressor discharge cover oil structure according to claim 1, characterized in that the discharge direction of the discharge orifice (3) is tangential to the inner wall of the discharge channel (2).

Description

Oil content structure of exhaust cover of scroll compressor Technical Field The utility model relates to the technical field of scroll compressors, in particular to an oil structure of an exhaust cover of a scroll compressor. Background The scroll compressor is used as one of the most critical equipment in the automobile air conditioning system of the new energy compressor, and the oil return capacity determines the oil content, the friction loss among the scroll plates and the refrigerating capacity in the air conditioning system. In the operation process of the scroll compressor, the refrigerant is generally mixed with the refrigerant and enters the exhaust cover through the static disc exhaust hole, so that an oil component mechanism is required to be arranged in the exhaust cover to separate the two substances, the refrigerant flows back to the static disc for circulating lubrication, and the refrigerant is discharged from the exhaust cover. Centrifugal oil structures are currently most widely used in scroll compressors. During operation, the mixture is discharged from the exhaust port of the static disc and enters the exhaust cover cavity, then enters the exhaust channel along a tangent line through the exhaust small hole, rotates at a high speed along the axial direction of the oil content insertion pipe in the annular flow channel between the exhaust channel and the oil content insertion pipe and moves towards the bottom, in the process, heavy frozen oil moves towards the bottom along the wall of the exhaust channel and enters the oil return cavity due to the difference of the mass of the frozen oil, and light frozen oil weakens due to centrifugal force in the moving process and enters a low-pressure area near the axial line, so that the light frozen oil is taken out of the exhaust cover through the inside of the oil content insertion pipe. The structure is simple, the oil content efficiency is higher, but the problems that 1, the position matching of the exhaust small hole in the exhaust cover and the outer wall surface of the oil content insertion pipe is poor, the flow resistance is larger, the top ash ring phenomenon can be caused when the exhaust cover is used, the exhaust pressure pulsation is increased rapidly, the mixed fluid is closer to the wall surface of the separator by improving the aspect ratio of the exhaust small hole, the rotating radius of the air flow is increased indirectly to improve the centrifugal force, and the oil content efficiency is improved are solved, but when the aspect ratio of the exhaust small hole is changed, the casting mould of the exhaust cover is required to be changed, the original mould is scrapped, and the transformation cost is higher; 2. the short-circuit flow is a secondary flow phenomenon, and mainly shows that particles do not enter the bottom as expected, but are discharged out of the compressor along with gas, and when the oil-gas mixture passes through the bottom of the oil component insertion pipe, part of frozen oil can be discharged out of the compressor along with refrigerant due to the short-circuit flow phenomenon, so that the oil component efficiency is influenced, and the oil content in an air conditioning system is increased; 3. The discharge channel is generally cylindrical in shape, and as the flow losses along the channel, the centrifugal force is weaker nearer to the bottom of the channel, so that part of the frozen oil is sucked into the inside of the oil insertion tube by the bottom and discharged out of the compressor, thus having room for further improvement. Disclosure of utility model The present utility model aims to solve at least one of the technical problems in the prior art, and the problems are solved by providing an oil structure of an exhaust cover of a scroll compressor. In order to achieve the above purpose, the oil content structure of the exhaust cover of the scroll compressor comprises an exhaust cover main body, wherein an exhaust channel is arranged in the middle of the inner side of the exhaust cover main body, an exhaust small hole is formed in the exhaust cover main body above the exhaust channel, an oil return cavity is formed in the bottom of the exhaust channel, the inner wall of one end, close to the oil return cavity, of the exhaust channel is a conical surface, and an oil content insertion pipe is arranged above the inner side of the exhaust channel; The oil content intubate includes the intubate main part, the top of intubate main part is provided with the fitting surface, the middle part of intubate main part is provided with the oil content face, be provided with Bezier curve transition surface between fitting surface and the oil content face, a plurality of oblique slots have been seted up to the bottom circumference of intubate main part. According to the oil component structure of the exhaust cover of the scroll compressor, the exhaust channel is communicated with the oil return cavity at the tip end p