CN211116581U

CN211116581U - Compressor for vehicle

Info

Publication number: CN211116581U
Application number: CN201922107109.6U
Authority: CN
Inventors: 宋雪峰; 王玉强; 王智君; 李恺; 冯天浩
Original assignee: Shanghai Highly New Energy Technology Co Ltd
Current assignee: Shanghai Highly New Energy Technology Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-07-28
Anticipated expiration: 2029-11-29

Abstract

The utility model provides a compressor for vehicle, include: a housing having an accommodating space; the compressing mechanism is positioned in the accommodating space and comprises: a static scroll and a dynamic scroll; the motor mechanism is positioned in the accommodating space; oil return mechanism set up in on the compression mechanism, the UNICOM high pressure chamber reaches low pressure chamber includes: the first oil return hole is arranged on one side, facing the high-pressure cavity, of the fixed scroll disc; the first oil outlet hole is arranged on one side, back to the fixed scroll, of the movable scroll; first oil circuit, UNICOM first oil return hole with first oil outlet includes: a first sub oil passage provided to the fixed scroll; and the second sub oil path is arranged on the movable scroll, one end of the second sub oil path is communicated with the first communicating cavity, and the other end of the second sub oil path is communicated with the first oil outlet hole. The utility model provides a compressor improves lubricated effect.

Description

Compressor for vehicle

Technical Field

The utility model relates to a compressor field especially relates to an automobile-used compressor.

Background

The vehicle scroll compressor has the characteristics of wide rotating speed range and complex and changeable operating conditions in application, and has very high requirements on the service life and the reliability of the compressor. And the lubrication condition of the bearing and the friction pair is very important to the service life of the compressor. The prior art compressor adopts some technical measures for providing lubrication (for example, lubricating oil is separated from an exhaust side and is returned to an air suction side through throttling pressure reduction, or oil-gas lubrication on the air suction side is utilized), and the lubricating requirement of a bearing can be met under the common working condition. However, when the engine is subjected to more severe operating conditions such as high rotating speed, heavy load, little oil in the compressor, and the like, the abrasion failure is likely to be caused by poor lubrication due to the larger load and partial oil shortage, and a more comprehensive and reliable lubricating mechanism is required.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome the defect that above-mentioned prior art exists, provide an automobile-used electric compressor, it can provide comprehensive and reliable lubricated mechanism of compressor, improves lubricated effect.

The utility model provides a compressor for vehicle, include:

a housing having an accommodating space;

the compressing mechanism is positioned in the accommodating space and comprises:

the static vortex disc is provided with a first vortex tooth; and

the side of the fixed scroll disc, which faces away from the fixed scroll disc, forms a high-pressure cavity with the shell, and the side of the fixed scroll disc, which faces away from the fixed scroll disc, forms a low-pressure cavity with the shell;

the motor mechanism is positioned in the accommodating space;

and

oil return mechanism set up in on the compression mechanism, the UNICOM high pressure chamber reaches low pressure chamber, in order with lubricating oil in the high pressure intracavity passes through oil return mechanism flows in the oil sump, oil return mechanism includes:

the first oil return hole is arranged on one side, facing the high-pressure cavity, of the fixed scroll disc;

the first oil outlet hole is arranged on one side, back to the fixed scroll, of the movable scroll;

first oil circuit, UNICOM first oil return hole with first oil outlet includes:

the first sub oil path is arranged on the fixed scroll, one end of the first sub oil path is communicated with the first oil return hole, the other end of the first sub oil path is communicated with a first communicating cavity, and the first communicating cavity is positioned on the end surface, facing the movable scroll, of a first scroll tooth of the fixed scroll, which is connected with the shell;

and

and the second sub oil path is arranged on the movable scroll, one end of the second sub oil path is communicated with the first communicating cavity, and the other end of the second sub oil path is communicated with the first oil outlet.

In some embodiments of the present invention, the oil return mechanism further comprises:

and the annular sealing ring is positioned in the first communicating cavity to isolate the first communicating cavity and the compression cavity.

In some embodiments of the present invention, the annular seal ring comprises:

the first annular sealing body is positioned in the first communication cavity and clings to the end surface of the movable scroll disk facing the fixed scroll disk in the first communication cavity and the inner side wall of the first communication cavity; and

the first annular elastic body is located in the first communication cavity, and the first annular elastic body is tightly attached to the first annular sealing body and the inner wall of the first communication cavity.

In some embodiments of the present invention, the diameter d of the first annular seal body₁Satisfy d₁＞2×r+d₂Wherein r is the rotation eccentricity of the movable scroll disk, d₂Communicating the second sub-oil passage with the diameter of the end of the first communication cavity such that the end of the second sub-oil passage communicating with the first communication cavity is always enveloped within the inner diameter profile of the first annular seal body.

The utility model discloses an in some embodiments, the movable scroll dish dorsad one side of static scroll dish is provided with the dead eye, motor mechanism is through a crankshaft drive the movable scroll dish eccentric rotation, the bent axle is connected the one end that moves the scroll dish is located in the dead eye, first oil outlet is located in the dead eye.

In some embodiments of the present invention, the first oil outlet is located at one side of the bearing hole facing the gravity direction.

In some embodiments of the present invention, the first oil outlet is located on one side of the bearing hole facing away from the gravity direction.

In some embodiments of the present invention, the method further comprises:

the oil pool is positioned in the low-pressure cavity;

the oil pump is positioned in the low-pressure cavity and used for pumping lubricating oil in the oil pool to a friction pair of the shafting transmission mechanism for lubrication;

compared with the prior art, the utility model has the advantages of as follows:

oil circuit lubrication is realized through oil return of the high-pressure cavity, so that a comprehensive and reliable lubricating mechanism of the compressor is provided, the utilization rate of lubricating oil is improved, and the lubricating effect is improved. Furthermore, the high-pressure cavity directly returns oil to the bearing part, the sealing isolation between the oil return channel and the compression cavity is realized through the sealing ring, the lubricating effect of the bearing can be obviously improved, then the lubricating oil flows through the lubricating oil cavity and then flows back to the oil pool, and the recycling efficiency of the lubricating oil in the compressor can be improved.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 shows a cross-sectional view of a compressor according to a first embodiment of the present invention.

Fig. 2 shows a schematic view of an annular seal ring according to a first embodiment of the invention.

Fig. 3 shows a schematic view of the position of a first communication chamber according to a first embodiment of the invention.

Fig. 4 shows a cross-sectional view of a compressor according to a second embodiment of the present invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

In order to improve the defects of the prior art, the utility model provides a vehicle compressor.

Referring first to fig. 1 to 3, fig. 1 to 3 show a first embodiment of the present invention. Fig. 1 shows a cross-sectional view of a compressor according to a first embodiment of the present invention. Fig. 2 shows a schematic view of an annular seal ring according to a first embodiment of the invention. Fig. 3 shows a schematic view of the position of a first communication chamber according to a first embodiment of the invention.

In the first embodiment, the vehicular compressor includes the casing 1, the compression mechanism, the motor mechanism, the oil sump 8, the oil pump 9, and the oil return mechanism. The housing 1 has an accommodating space. The compression mechanism is positioned in the accommodating space and comprises a fixed scroll disk 2 and a movable scroll disk 3. The fixed scroll 2 is provided with a first wrap 21. The orbiting scroll 3 is provided with a second wrap 31, and a side of the orbiting scroll 3 provided with the second wrap 31 is opposite to the first wrap 21 of the fixed scroll 2. The first wrap 21 of the fixed scroll 2 and the second wrap 31 of the movable scroll 3 form a compression chamber. The side of the fixed scroll 2 facing away from the movable scroll 3 forms a high pressure chamber 4 with the housing 1. The side of the orbiting scroll 3 facing away from the fixed scroll 2 forms a low pressure chamber (chamber where the oil pool 8 is located) with the housing 1. The motor mechanism is positioned in the accommodating space and comprises a motor rotor and a motor stator, and the motor mechanism drives the movable scroll disk 3 to rotate relative to the fixed scroll disk 2 so as to compress the refrigerant in the compression cavity. An oil sump 8 is located within the low pressure chamber. And the oil pump 9 is positioned in the low-pressure cavity to pump lubricating oil in the oil pool to a friction pair of the shafting transmission mechanism for lubrication. The oil return mechanism is arranged on the compression mechanism and communicated with the high-pressure cavity 4 and the low-pressure cavity so as to enable lubricating oil in the high-pressure cavity 4 to flow into the oil pool 8 through the oil return mechanism. The oil return mechanism includes a first oil return hole 501, a first oil outlet hole 502, and a first oil passage. A first oil return hole 501 is provided at a side of the fixed scroll 2 facing the high pressure chamber 4. A first oil outlet hole 502 is provided at a side of the orbiting scroll 3 facing away from the fixed scroll 2. The first oil passage communicates the first oil return hole 501 and the first oil outlet hole 502. The first oil passage includes a first sub-oil passage 51, a second sub-oil passage 54, and a first communication chamber 52.

A first sub oil passage 51 is provided to the fixed scroll 2. One end of the first sub oil passage 51 communicates with the first oil return hole 501. The other end of the first sub oil passage 51 is communicated with the first communicating cavity 52. The first communicating chamber 52 is located at an end surface of the first wrap 21 of the fixed scroll 2 facing the orbiting scroll 2. A second sub oil passage 54 is provided in the orbiting scroll 3, one end of the second sub oil passage 54 communicates with the first communicating chamber 52, and the other end of the second sub oil passage 54 communicates with the first oil outlet 502. First communicating chamber 52 is formed by surrounding end surfaces of fixed scroll 2 and orbiting scroll 3, and the oil return mechanism further includes an annular seal ring 53 in consideration of eccentric rotation of orbiting scroll 3 with respect to fixed scroll 2. The annular seal ring 53 is located in the first communicating chamber 52 to isolate the first communicating chamber 52 from the compression chamber. In some embodiments of the present invention, the annular sealing ring 53 includes a first annular sealing body 531 and a first annular elastic body 532. The first annular sealing body 531 is located in the first communicating cavity 52, and the first annular sealing body 531 is tightly attached to the end surface 301, facing the fixed scroll 2, of the movable scroll 3 in the first communicating cavity 52 and the inner side wall of the first communicating cavity 52. The first annular elastic body 532 is located in the first communicating cavity 52 and is coaxially arranged with the first annular sealing body 531, and the first annular elastic body 532 is tightly attached to the inner side walls of the first annular sealing body 531 and the first communicating cavity 52.

In the first embodiment of the present invention, the diameter d of the first annular sealing body 531₁Satisfy d₁＞2×r+d₂Where r is a turning eccentricity of the orbiting scroll 3, d₂The diameter of the end of the second sub oil path 54 communicating with the first communicating cavity 52 is such that the end 541 of the second sub oil path 54 communicating with the first communicating cavity 52 is always enveloped within the inner diameter profile of the first annular sealing body 531. Thereby, sealing of the oil passage between the relatively moving parts is achieved.

In the first embodiment of the present invention, the first communicating chamber 52 is located at an end of the fixed scroll 2 facing the oil sump 8. One side of the movable scroll disk 3, which is opposite to the fixed scroll disk 2, is provided with a bearing hole 32, the motor mechanism drives the movable scroll disk 3 to eccentrically rotate through a crankshaft 7, one end of the crankshaft 7, which is connected with the movable scroll disk 3, is positioned in the bearing hole 32, and the first oil outlet hole 502 is positioned in the bearing hole 32. As shown in fig. 1, in the first embodiment of the present invention, the first oil outlet hole 502 is located on the side of the bearing hole 32 facing the direction of gravity.

Therefore, in the operation process of the compressor, low-pressure refrigerant steam mixed with a part of lubricating oil is compressed by a compression cavity formed by matching the driven scroll 3 and the fixed scroll 2, and a mixture of the compressed high-pressure refrigerant steam and the lubricating oil flows into the high-pressure cavity 4 through the exhaust hole of the fixed scroll 2. A first oil return hole 301 is formed in one side of the fixed scroll 2 facing the high pressure chamber 4, a first sub oil path 51 is formed in the compression mechanism (one end of the first sub oil path 51 is communicated with the first oil return hole 301), and the other end of the first sub oil path 51 is communicated with a first communication chamber 52 formed in an end surface 201 of the fixed scroll 2. The movable scroll 3 is provided with an end surface 301 facing the fixed scroll 2, a second sub oil path 54 and a bearing hole 32, one end of the second sub oil path 54 is communicated with the first communication cavity 52 through the end surface 301 of the movable scroll 3, the other end of the second sub oil path 54 is communicated with a first oil outlet hole 502 provided in the bearing hole 32, and the bearing 61 is installed in the bearing hole 32.

The annular sealing ring 53 is installed in the first communicating cavity 52, the annular sealing ring 53 comprises a first annular sealing body 531 and a first annular elastic body 532, the first annular elastic body 532 is in contact with the bottom surface of the first communicating cavity 52 and supports the first annular sealing body 531, and after assembly, a pretightening force is provided through compression deformation of the first annular elastic body 532, so that the first annular sealing body 531 is always in contact with the end surface 301 of the movable scroll 3. During the rotation of the movable scroll 1, a small clearance fit (the clearance value is not more than 0.1mm) is formed between the end surface 301 of the movable scroll 3 and the end surface 201 of the fixed scroll 2, and the second sub oil path 54 is arranged at one end of the end surface 301 and is enveloped in the inner diameter profile of the first annular sealing body 531 all the time.

Therefore, the lubricating oil separated from the high-pressure chamber 4 can be made to flow along the single path of the first oil return hole 501, the first sub oil passage 51, the first communicating chamber 52, the second sub oil passage 54, the first oil outlet hole 502, and the bearing hole 32, and the lubricating effect on the bearing 61 attached to the bearing hole 32 can be greatly improved.

In addition, the oil pump 9 located in the low pressure chamber of the compressor sucks the lubricating oil in the oil sump 8 through the oil suction hole 81 and sends the lubricating oil into the bearing hole 32 through the oil pump shaft 91 and the crankshaft oil supply hole 71, thereby further improving the lubrication of the bearing 61.

The utility model discloses a in the first embodiment, casing 1 is equipped with bearing housing hole 12, oil gallery 111, and bearing 62 is installed among bearing housing hole 12, and casing 1's bottom is equipped with lubricating oil pond 8 to casing 1 has formed lubricating oil chamber 11 with the cooperation of moving vortex dish 3, and lubricating oil chamber 11 is the UNICOM with bearing housing hole 12, bearing hole 32, and lubricating oil chamber 11 leads to lubricating oil pond 8 through oil gallery 111 UNICOM.

Therefore, the lubricating oil inside the bearing hole 32 flows into the lubricating-oil chamber 11, and the lubricating effect on the bearing 62 can be improved, and the lubricating oil flows into the lubricating-oil reservoir 8 through the oil return hole 111 after accumulating inside the lubricating-oil chamber 11.

A part of the lubricating oil in the lubricating oil pool 8 is sucked by the oil pump 9 through the oil suction hole 81, and the other part of the lubricating oil is mixed in the low-pressure refrigerant vapor and compressed again and flows into the high-pressure chamber 4.

The high-pressure cavity directly returns oil to the bearing 61, the sealing isolation between the oil return channel and the compression cavity is realized through the sealing ring 53, the lubricating effect of the bearing 61 can be obviously improved, then the lubricating oil flows through the lubricating oil cavity 11 and then flows back to the oil pool 8, and the recycling efficiency of the lubricating oil in the compressor can be improved.

The high-pressure cavity oil return lubrication mechanism and the low-pressure cavity active oil supply lubrication mechanism jointly form lubricating oil circulation in the compressor.

Further, by adjusting the position of the communication hole between the second sub oil passage 54 and the bearing hole 32 (i.e., the position where the first oil outlet hole 502 is provided), the return oil can be supplied to different positions. In the first embodiment of the present invention, the position of the first oil outlet 502 may be, for example, a position lower than the main axis for direct oil supply (see fig. 1). In other words, the first oil outlet hole 502 may be located on one side of the bearing hole 32 facing the gravity direction, so as to make the oil return path shorter and the oil return efficiency higher, and at the same time, reduce the difficulty of the oil path manufacturing process. In the second embodiment of the present invention, the position of the first oil outlet 502 can realize direct oil supply at a position higher than the main axis (see fig. 4), for example. In other words, the first oil outlet hole 502 may be located at a side of the bearing hole 32 facing away from the gravity direction, so as to lubricate the friction pair of the compressor main shaft line part.

This improves the lubricating effect on the

bearings

61 and 62, reduces the oil discharge amount of the compressor, and reduces the oil circulation rate of the air conditioning system.

the oil way lubrication is realized through the oil return and supply of the high-pressure cavity, so that a comprehensive and reliable lubricating mechanism of the compressor is provided, and the utilization rate of lubricating oil is improved. Furthermore, the high-pressure cavity directly returns oil to the bearing part, the sealing isolation between the oil return channel and the compression cavity is realized through the sealing ring, the lubricating effect of the bearing can be obviously improved, then the lubricating oil flows through the lubricating oil cavity and then flows back to the oil pool, and the recycling efficiency of the lubricating oil in the compressor can be improved.

Exemplary embodiments of the present invention have been particularly shown and described above. It is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.

Claims

1. A vehicular compressor, characterized by comprising:

a housing having an accommodating space;

the static vortex disc is provided with a first vortex tooth; and

the motor mechanism is positioned in the accommodating space; and

oil return mechanism set up in on the compression mechanism, the UNICOM high pressure chamber reaches low pressure chamber, oil return mechanism includes:

first oil circuit, UNICOM first oil return hole with first oil outlet includes:

the first sub oil path is arranged on the fixed scroll, one end of the first sub oil path is communicated with the first oil return hole, the other end of the first sub oil path is communicated with a first communicating cavity, and the first communicating cavity is positioned on the end surface, facing the movable scroll, of a first scroll tooth of the fixed scroll, which is connected with the shell; and

2. The vehicular compressor according to claim 1, wherein said oil return mechanism further comprises:

and the annular sealing ring is positioned in the first communicating cavity to isolate the first communicating cavity and a compression cavity formed between the static scroll disk and the movable scroll disk.

3. The compressor as set forth in claim 2, wherein said annular seal ring includes:

the first annular elastic body is located in the first communication cavity and clings to the first annular sealing body and the inner wall of the first communication cavity.

4. A vehicular compressor according to claim 3, wherein said first annular seal body has a diameter d₁Satisfy d₁＞2×r+d₂Wherein r is the rotation eccentricity of the movable scroll disk, d₂Communicating the second sub-oil passage with the diameter of the end of the first communication cavity such that the end of the second sub-oil passage communicating with the first communication cavity is always enveloped within the inner diameter profile of the first annular seal body.

5. The compressor for vehicle as claimed in claim 1, wherein a side of the orbiting scroll facing away from the fixed scroll is provided with a bearing hole, the motor mechanism drives the orbiting scroll to eccentrically rotate by a crankshaft, an end of the crankshaft connected to the orbiting scroll is located in the bearing hole, and the first oil outlet hole is located in the bearing hole.

6. The vehicular compressor according to claim 5, wherein said first oil outlet hole is located on a side of said bearing hole facing the direction of gravity.

7. The vehicular compressor according to claim 5, wherein said first oil outlet hole is located on a side of said bearing hole facing away from the direction of gravity.

8. The compressor for a vehicle of claim 1, further comprising:

the oil pool is positioned in the low-pressure cavity;

and the oil pump is positioned in the low-pressure cavity and used for pumping lubricating oil in the oil pool to a friction pair of the shafting transmission mechanism for lubrication.