CN117189585A

CN117189585A - Compressor

Info

Publication number: CN117189585A
Application number: CN202211733182.4A
Authority: CN
Inventors: 司玉宝; 请求不公布姓名
Original assignee: Hangzhou Lvneng New Energy Auto Parts Co ltd
Current assignee: Hangzhou Lvneng New Energy Auto Parts Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-12-08

Abstract

The application provides a compressor, which comprises a fixed scroll, wherein the fixed scroll comprises a fixed end plate, the fixed end plate is provided with a communication hole, the communication hole penetrates through the fixed end plate along the thickness direction, the compressor is provided with a compression cavity and a discharge cavity, the communication hole is communicated with the compression cavity, and the communication hole can be communicated with the discharge cavity; the compressor further has an enthalpy-increasing passage that is capable of communicating with the communication hole. According to the compressor provided by the application, the enthalpy increasing channel is communicated with the communication hole for communicating the compression cavity and the exhaust cavity, and the holes are not required to be specially formed in the fixed end plate for the enthalpy increasing channel, so that the structure is simple, the number of the holes of the fixed end plate is reduced, and the hole forming process of the fixed end plate is reduced.

Description

Compressor

Technical Field

The application belongs to the field of refrigerant compression, and particularly relates to a compressor.

Background

The compressor is one of the important components of the air conditioning system. When the compressor operates at a low evaporation temperature, the problems of increased air suction specific volume, increased pressure ratio, rapid exhaust temperature rise and the like can occur, so that the performance of the refrigeration compressor is rapidly reduced, the heating capacity is insufficient and the refrigeration compressor is difficult to operate, the problem can be solved by adopting an air supplementing enthalpy increasing technology, however, in the related technology, the static plate is provided with an air exhaust hole and an enthalpy increasing hole, the air exhaust hole and an enthalpy increasing channel are distributed and provided with different openings, namely the air exhaust hole and the enthalpy increasing hole are not shared, the number of open holes on the static plate end plate is increased, the processing procedure is increased, and the structural strength of the static plate end plate is reduced.

Disclosure of Invention

The technical problem to be solved by the application is to provide the compressor, so that the enthalpy-increasing channel and the communication hole share holes, and the number of holes of the fixed end plate is reduced.

The application provides a compressor, which comprises a fixed scroll, wherein the fixed scroll comprises a fixed end plate, the fixed end plate is provided with a communication hole, the communication hole penetrates through the fixed end plate along the thickness direction, the compressor is provided with a compression cavity and a discharge cavity, the communication hole is communicated with the compression cavity, and the communication hole can be communicated with the discharge cavity;

the compressor further has an enthalpy-increasing passage that is capable of communicating with the communication hole.

The compressor provided by the application has the advantages that the communication hole is formed in the fixed end plate and is communicated with the compression cavity, the communication hole can be communicated with the exhaust cavity, the enthalpy increasing channel can be communicated with the communication hole, so that the communication hole can be communicated with the compression cavity and the exhaust cavity, and can also be communicated with the enthalpy increasing channel, the separation increasing channel and the communication hole which is used for communicating the compression cavity with the exhaust cavity, namely the unloading hole, are shared, the structure is simple, and the number of holes of the fixed end plate is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a perspective view of a compressor according to an embodiment of the present application;

FIG. 2 is an exploded view of a compressor according to an embodiment of the present application;

FIG. 3 is a cross-sectional view of a compressor according to an embodiment of the present application;

FIG. 4 is a diagram showing the fit of a fixed scroll to an orbiting scroll in one state in accordance with an embodiment of the present application;

FIG. 5 is an enlarged view of circle A of FIG. 3;

FIG. 6 is a cross-sectional view taken in the direction D of FIG. 3;

FIG. 7 is a block diagram of a wear plate and pump mount in a separated condition in an embodiment of the present application;

FIG. 8 is an exploded view of an oil pump according to an embodiment of the present application;

FIG. 9 is a diagram showing a construction of an oil pump having an oil suction pipe according to an embodiment of the present application;

FIG. 10 is an enlarged view of circle E of FIG. 3;

FIG. 11 is a diagram showing a structure in which an oil passing through hole is provided in an orbiting scroll in an embodiment of the present application;

FIG. 12 is a partial cross-sectional view of a compressor provided by an embodiment of the present application;

fig. 13 is a perspective view of an orbiting scroll in an embodiment of the present application;

FIG. 14 is a distribution diagram of the oil passage in the movable end plate according to an embodiment of the present application;

FIG. 15 is an enlarged view of circle F of FIG. 12;

FIG. 16 is a cross-sectional view of a compressor according to an embodiment of the present application from another perspective;

fig. 17 is a structural view of an orbiting scroll in an embodiment of the present application;

FIG. 18 is a block diagram of a main bearing housing in an embodiment of the application;

FIG. 19 is a cross-sectional view of a further view of a compressor according to an embodiment of the present application;

FIG. 20 is a block diagram of a hydrocarbon screen in an embodiment of the application;

FIG. 21 is a cross-sectional view of a hydrocarbon screen in an embodiment of the application;

FIG. 22 is another partial cross-sectional view of a compressor provided in accordance with an embodiment of the present application;

FIG. 23 is a cross-sectional view of a movable end plate in an embodiment of the application;

FIG. 24 is an exploded view of a check valve and a cover according to an embodiment of the present application;

fig. 25 is a perspective view of an orbiting scroll in an embodiment of the present application;

FIG. 26 is a view showing the fit of the fixed scroll and the orbiting scroll in another state according to an embodiment of the present application;

FIG. 27 is a further partial cross-sectional view of a compressor provided in accordance with an embodiment of the present application;

FIG. 28 is a diagram showing the structure of an exhaust valve and an orbiting scroll in an exploded state according to an embodiment of the present application;

FIG. 29a is a side view of a lift limiter in an embodiment of the present application;

FIG. 29b is a block diagram of a lift limiter in an embodiment of the present application;

FIG. 30 is a cross-sectional view of a muffler in an embodiment of the present application;

FIG. 31 is another cross-sectional view of a muffler in an embodiment of the present application;

Fig. 32 is an enlarged view of circle B in fig. 19.

Detailed Description

For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.

It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

As shown in fig. 1 to 3, the present embodiment provides a compressor, including a compressor housing, a supporting member, a compression mechanism, a driving mechanism 9 and a rotating shaft assembly, where the compressor housing includes a casing 1 and a cover 7, the compression mechanism, the driving mechanism 9 and the rotating shaft are all located in the whole compressor housing, and the supporting member is at least partially located in the casing 1, i.e. the supporting member may be all located in the casing 1, and the casing 1 and the cover 7 are directly connected at this time; the supporting member may be partially located in the casing 1, and partially located outside the casing 1, where the casing 1, the supporting member, and the cover 7 are connected, and the supporting member is partially located between the casing 1 and the cover 7.

The compression mechanism comprises a movable scroll 4 and a fixed scroll 5, the movable scroll 4 is supported by a supporting piece and is contacted with the supporting piece, the driving mechanism 9 is connected with a rotating shaft assembly, the rotating shaft assembly is connected with the movable scroll 4 in a matching way, the rotating shaft assembly comprises a rotating shaft 3, the rotating shaft 3 is mounted in a matching way with the supporting piece, the compression mechanism is at least partially positioned between the supporting piece and a cover body 7, and in particular, the fixed scroll 5 is connected with the cover body 7. The movable scroll 4 includes a movable end plate 41 and a movable scroll 42, the movable scroll 42 being located on one side of the movable end plate 41 in the thickness direction; the fixed scroll 5 includes a fixed end plate 51 and a fixed scroll 52, the fixed scroll 52 is located at one side of the fixed end plate 51 in the thickness direction, the fixed scroll 52 is engaged with the movable scroll 42, the compressor has a compression chamber V, the compression chamber V is located at least partially between the movable scroll 4 and the fixed scroll 5, specifically, the compression chamber V is located at least partially between the movable end plate 41 and the fixed end plate 51, and the compression chamber V is located between the fixed scroll 52 and the movable scroll 42, in other words, the movable scroll 4 and the fixed scroll 5 cooperate to form the compression chamber V, and the compression mechanism is engaged with the movable scroll 42 in the process of compressing the refrigerant to drive the refrigerant to gradually push the refrigerant to the center in the compression chamber V. The compressor supports the movable scroll 4 during compression of the refrigerant, and the end surface of the movable end plate 41 on the side away from the movable scroll 42 is in sliding contact engagement at least partially with the support, which includes the main bearing housing 6.

The compression mechanism is provided with a suction cavity S and an oil storage cavity C3, the suction cavity S is positioned at the periphery of the compression cavity V, and at least part of the suction cavity S is positioned between the cover body 7 and the fixed scroll 5; the oil storage cavity C3 is positioned in the shell 1, and the oil storage cavity C3 is arranged close to the bottom plate of the shell 1.

In compressors, lubrication not only reduces friction and wear on the machine, but also serves to seal, cool and reduce operating noise. In the related art, metal scraps can be adsorbed by arranging a magnet on a filter screen of an oil tank, the filter screen is positioned outside the oil pump, but metal powder generated in the operation process of the oil pump still enters an inner cavity of the oil pump, and then the metal powder enters parts such as a bearing and a motor along with lubricating oil to influence the parts such as the bearing and the motor. For this purpose, the compressor provided in this embodiment includes an oil pump 2, the oil pump 2 is located in the casing 1, and lubricating oil is pumped to a required portion in the casing 1 by the oil pump 2 for lubrication. As a key technical matter of the present embodiment, referring to fig. 5 to 9 again, the oil pump 2 has an oil pump cavity 20, the oil pump 2 includes an absorbing member 21, and the absorbing member 21 is at least partially located in the oil pump cavity 20. In this embodiment, the suction member 21 may be located in the oil pump cavity 20 entirely, or may be located in part of the oil pump cavity 20, and be located in part outside the oil pump cavity 20 (for example, located in part outside the oil pump 2), where the oil pump 2 is used as a power device to suck the lubricating oil into the oil pump cavity 20 and then discharge the lubricating oil, and in the process of pumping the lubricating oil, the lubricating oil is conveyed by means of the movement of the action component. The adsorbing member 21 has an adsorbing performance and is capable of adsorbing a part of substances in the lubricating oil to damage and destroy the components in the compressor. In some embodiments, the absorbing member 21 is a magnet, which has magnetism, and can absorb the metal powder or metal particles in the lubricating oil, so that the metal powder or metal particles cannot enter the required position in the compressor along with the lubricating oil, and damage of the metal powder or metal particles to the bearing, the magnetic steel on the driving mechanism 9 and other parts can be greatly reduced or even avoided.

If the suction member 21 is arranged outside the oil pump 2, the suction member 21 can suck metal powder or metal particles contained in the lubricating oil outside the oil pump 2, but the action component is usually in the oil pump 2, and generally in the oil pump cavity 20, the action component can be ground with other parts of the oil pump 2 in the moving process to generate metal powder or metal particles, so that the metal powder or metal particles enter the oil pump cavity 20, and the suction member 21 is arranged in the oil pump cavity 20, so that the metal powder or metal particles generated by the action component of the oil pump 2 in the moving process can be sucked by the suction member 21 in time, and can be prevented from flowing to other parts of the compressor along with the lubricating oil.

Further, referring again to fig. 7 and 8, the oil pump 2 includes an oil pump housing 22, an oil pump cavity 20 is located in the oil pump housing 22, and an oil pump rotor 23 is located in the oil pump cavity 20. The oil pump rotor 23 serves as an action part of the oil pump, and the oil pump 2 provides kinetic energy by the oil pump rotor 23 in the process of pumping oil, so that the transmission of lubricating oil is realized.

The oil pump inner cavity 20 comprises a first cavity 20a and a second cavity 20b, the shell 1 is provided with an oil storage cavity C3, the oil storage cavity C3 is positioned outside the oil pump 2, the oil storage cavity C3 is communicated with the first cavity 20a, and the oil pump rotor 23 is positioned in the first cavity 20 a; the suction member 21 is located in the second chamber 20b, and the first chamber 20a and the second chamber 20b communicate. The compressor comprises a rotating shaft 3, the rotating shaft 3 is movably connected with an oil pump rotor 23, the rotating shaft 3 is provided with an oil supply through hole 30, and the oil supply through hole 30 is communicated with a second cavity 20 b. In the rotating process of the rotating shaft 3, the oil pump rotor 23 is driven to act in the first cavity 20a, lubricating oil in the oil storage cavity C3 is sucked into the first cavity 20a and then discharged into the second cavity 20b with the suction part 21, and metal powder or metal particles contained in the lubricating oil passing through the second cavity 20b are sucked by the suction part 21, so that the metal powder or metal particles are reduced or prevented from entering the oil supply through hole 30 of the rotating shaft 3, and damage to other parts (particularly moving parts) in the compressor can be avoided due to certain hardness of the metal powder or metal particles, so that the compressor has a protection effect.

Further, the oil pump housing 22 includes a pump seat 221, the pump seat 221 is provided with a flat shoulder 22a, the bottom surface of the oil pump rotor 23 contacts with the flat shoulder 22a, specifically, the bottom surface of the oil pump rotor 23 contacts with the top surface of the flat shoulder 22a, in other words, the first cavity 20a and the second cavity 20b are located at two sides of the top surface of the Ping Jianbu a, and the second cavity 20b is closer to the bottom plate of the casing 1 than the first cavity 20a, i.e. the suction member 21 is closer to the inner bottom surface of the oil pump cavity 20 than the oil pump rotor 23. In addition, the oil pump housing 22 further includes a wear plate 222, the wear plate 222 is connected with the pump seat 221, the oil pump rotor 23 is located between the wear plate 222 and the flat shoulder 22a, the top surface of the oil pump rotor 23 contacts with the wear plate 222, specifically, the top surface of the oil pump rotor 23 contacts with the bottom surface of the wear plate 222, and at least one of the oil pump rotor 23, the wear plate 222 and the pump seat 221 is made of metal. In this embodiment, the wear-resistant plate 222 not only plays a role of a cover plate of the oil pump 2, but also plays a role of wear resistance, and the oil pump rotor 23, the wear-resistant plate 222 and the pump seat 221 are all made of metal materials. The wear plate 222 and the flat shoulder 22a limit the oil pump rotor 23 in the thickness direction thereof, and when the oil pump rotor 23 is in operation, the wear plate 222 and the flat shoulder 22a are worn in, so that metal powder or metal particles are generated, and the generated metal powder and the like can be adsorbed in time by arranging the adsorption member 21.

In this embodiment, the wear plate 222, the flat shoulder 22a and the peripheral wall of the pump seat 221 jointly enclose the first cavity 20a, so that the first cavity 20a becomes a relatively closed cavity, and thus the volume of the first cavity 20a changes during the operation of the oil pump rotor 23, thereby achieving the purposes of oil absorption and oil discharge.

Referring again to fig. 6 and 7, the oil pump 2 includes an engagement portion 24, and the oil pump rotor 23 is engaged with the pump seat 221 through the engagement portion 24. In the process of the action of the oil pump rotor 23, the oil pump rotor is always meshed with the pump seat 221 through the meshing part 24, and the outer wall of the oil pump rotor 23 is contacted with the inner wall of the first cavity 20a, so that the first cavity 20a is divided into two cavities, namely, the first cavity 20a comprises an oil inlet cavity 20a1 and an oil outlet cavity 20a2, the volume of the oil inlet cavity 20a1 can be increased and decreased repeatedly, the volume of the oil outlet cavity 20a2 can be decreased and increased repeatedly, and when the volume of the oil inlet cavity 20a1 is increased, the volume of the oil outlet cavity 20a2 is decreased; when the volume of the oil feed chamber 20a1 is reduced, the volume of the oil discharge chamber 20a2 is increased. When the volume of the oil inlet chamber 20a1 is gradually increased from small to large, a vacuum is formed, the lubricant in the oil storage chamber C3 is sucked into the oil inlet chamber 20a1, the volume of the oil outlet chamber 20a2 is gradually decreased from large, the lubricant is extruded to have a pressure increased, and the lubricant enters the second chamber 20b from the oil outlet chamber 20a 2. In this embodiment, the oil pump 2 has an oil inlet channel 2b and an oil outlet channel 2C, the oil inlet channel 2b communicates with the oil inlet cavity 20a1 and the oil storage cavity C3, the oil outlet channel 2C communicates with the oil outlet cavity 20a2 and the second cavity 20b, the oil inlet channel 2b and the oil outlet channel 2C are located at two sides of the engagement portion 24, that is, during the operation of the oil pump rotor 23, the lubricating oil in the oil storage cavity C3 enters the oil inlet cavity 20a1 through the oil inlet channel 2b, and the lubricating oil in the oil outlet cavity 20a2 enters the second cavity 20b through the oil outlet channel 2C. The opening size of the oil outlet passage 2c can be set according to the requirement, so that the pressure of the lubricating oil entering the second cavity 20b meets the requirement. Wherein the oil outlet channel 2c extends outwards from the inner wall of the second cavity 20 b.

Referring to fig. 3 and 8 again, the second cavity 20b includes a counterbore 20b1, the absorbing member 21 is at least partially installed in the counterbore 20b1, and a space is provided between the top surface of the absorbing member 21 and the end surface of the rotating shaft 3 (the end surface of the matching section of the rotating shaft 3 and the rotor of the oil pump), so that lubricating oil can smoothly enter the oil supply through hole 30 from the second cavity 20b, and a space is reserved for absorbing generated metal powder or metal particles.

In addition, the rotating shaft 3 is usually a metal member, in order to prevent the absorbing member 21 from slipping out of the counter bore 20b1 to absorb the rotating shaft 3, and thus the inlet of the oil supply through hole 30 is blocked, and therefore, the oil pump 2 includes a limiting portion 25, please refer to the limiting portion 25 connected to the pump seat 221, and the limiting portion 25 is used for limiting the direction of the absorbing member 21 toward the rotating shaft 3. In this embodiment, the structure of the limiting portion 25 is not specifically limited, and the limiting ring may cover the edge portion of the absorbing member 21, and the limiting ring may be connected (e.g. screwed) with the pump seat 221, or the opening portion of the inner wall of the counterbore 20b1 may be provided with a flange, which may be a continuous circle or a discontinuous circle, and the absorbing member 21 may be limited by providing the flange after being mounted in the counterbore 20b 1.

Referring again to fig. 6 and 7, the pump seat 221 is provided with a recess 20c, the recess 20c extends outwardly from the inner wall of the first cavity 20a, and the recess 20c communicates with the first cavity 20a and the oil inlet passage 2b. The oil inlet channel 2b can be always communicated with the oil inlet cavity 20a1 of the first cavity 20a in the action process of the oil pump rotor 23, the condition that the oil pump rotor 23 covers the oil inlet channel 2b can not be avoided, and continuous conveying of lubricating oil is ensured.

Referring to fig. 6 and 7, in some embodiments, the engagement portion 24 includes a protrusion 24a and a groove 24b, the protrusion 24a is at least partially located in the groove 24b, one of the protrusion 24a and the groove 24b is located in the pump seat 221, and the other is located in the pump rotor 23. During the operation of the oil pump rotor 23, the outer peripheral wall of the projection 24a can be engaged with the peripheral wall of the recess 24b, so that the oil inlet passage 2b and the oil outlet passage 2c can be prevented from communicating.

Referring to fig. 8, in the present embodiment, the oil pump rotor 23 has a mounting hole 230, the rotating shaft 3 is in clearance fit with the mounting hole 230, and the compressor includes a driving mechanism 9, the driving mechanism 9 is connected with the rotating shaft 3, and a center line of a section of the rotating shaft 3 matched with the driving mechanism 9 and a center line of a section of the rotating shaft 3 matched with the oil pump rotor 23 are eccentrically arranged. The driving mechanism 9 drives the rotating shaft 3 to rotate, and because the rotating shaft 3 and the mounting hole 230 adopt clearance fit, the rotating shaft 3 can not drive the oil pump rotor 23 to rotate synchronously, and because of eccentric arrangement, the rotating shaft 3 can provide power for the oil pump rotor 23, so that the oil pump rotor can act in the first cavity 20a and be meshed with the inner wall of the first cavity 20a, and oil pumping work is realized.

Referring to fig. 2, 3 and 5 again, in the present embodiment, the compressor includes a sub bearing seat 11, the sub bearing seat 11 is located in the casing 1, the sub bearing seat 11 is connected with the casing 1, and the pump seat 221 is connected with the sub bearing seat 11; the wear plate 222 is located between the pump mount 221 and the sub-bearing mount 11. In some embodiments, the pump seat 221 and the auxiliary bearing seat 11 are detachably connected, so that metal powder or particles adsorbed by the adsorbing member 21 can be cleaned conveniently, threaded holes are formed in the auxiliary bearing seat 11, bolt holes are formed in the pump seat 221 and the wear-resisting plate 222, bolts sequentially penetrate through the bolt holes in the pump seat 221 and the wear-resisting plate 222 and then are in threaded engagement with the threaded holes in the auxiliary bearing seat 11, the wear-resisting plate 222 is pressed between the pump seat 221 and the auxiliary bearing seat 11, and the bolt holes in the pump seat 221 and the wear-resisting plate 222 can be round holes or non-closed holes, as shown in fig. 7 and 8. When the threaded connection mode is adopted, the oil pump 2 can be at least partially accommodated in the auxiliary bearing seat 11, namely, a pump seat mounting hole is formed in the bottom of the auxiliary bearing seat 11, and the pump seat 221 is at least partially arranged in the pump seat mounting hole, as shown in fig. 5, so that the overall volume and weight of the oil pump 2 can be reduced; the oil pump 2 and the sub-bearing 11 may be distributed along the axial direction of the rotating shaft 3, which is not shown in the drawings. The pump mount 221 and the sub-bearing mount 11 may be connected by a snap-fit connection or the like.

Referring to fig. 5, in the present embodiment, the compressor includes a secondary bearing 12, and the rotating shaft 3 is cooperatively connected with the secondary bearing seat 11 through the secondary bearing 12; the auxiliary bearing seat 11 is positioned in the shell 1, and the auxiliary bearing seat 11 is connected with the shell 1. In this embodiment, the sub-bearing 12 is a sliding bearing. The auxiliary bearing 12 also needs to be lubricated in the working process, when the lubricating oil in the oil storage cavity C3 is insufficient to be less than the bottom of the auxiliary bearing 12, the clearance fit adopted by the rotating shaft 3 and the mounting hole 230 can also enable part of the lubricating oil to enter the position where the auxiliary bearing 12 is positioned through the fit clearance between the rotating shaft 3 and the mounting hole 230 for lubrication.

Referring to fig. 2 and 3 again, the oil pump 2 is installed at the bottom of the sub-bearing seat 11, and for convenient disassembly and cleaning or maintenance, the casing 1 includes a cylinder 13 and a bottom plate 14, and the bottom plate 14 is connected with the bottom end of the cylinder 13; in addition, the compressor comprises a seal 15, the seal 15 being at least partially located between the cylinder 13 and the bottom plate 14. When the cleaning oil pump 2, the maintenance oil pump 2, or the like needs to be detached, the operation can be performed by detaching the bottom plate 14. In addition, the compressor includes the connection arm 111, the auxiliary bearing housing 11 is connected with the inner wall of the cylinder 13 through the connection arm 111, the connection arm 111 is arranged at intervals, a large-area oil passing area is arranged between the adjacent connection arms 111, and oil supply passes through without blocking.

Referring to fig. 6 again, the side wall of the cylinder 13 is provided with an oil viewing window 16, so that the condition of the amount of lubricating oil can be known for timely replenishment.

Referring to fig. 2 and 9, in order to avoid the situation that the oil in the oil storage chamber C3 is insufficient to reach the pump seat 221 and cannot absorb oil, the oil pump 2 of the present embodiment further includes an oil suction pipe 26, wherein the oil suction pipe 26 is mounted on the pump seat 221, the oil suction pipe 26 has an oil inlet channel 2b, and the oil suction pipe 26 extends toward the bottom plate 14 of the casing 1. Further, the end of the oil suction pipe 26 facing the bottom plate of the casing 1 is provided with a through groove 26a, the through groove 26a penetrates through the peripheral side wall of the oil suction pipe 26, the through groove 26a is communicated with the oil inlet channel 2b, and the side of the through groove 26a facing the bottom plate of the casing 1 is open.

Referring again to fig. 3 and 5, the compressor includes a filter screen 27, the filter screen 27 is connected with at least one of the oil pump housing 22 and the sub-bearing 11, the filter screen 27 has a filter screen inner cavity 27a, and the oil suction pipe 26 is located in the filter screen inner cavity 27 a. Since more components in the compressor are in an operating state, such as a rotating shaft, a bearing, a movable vortex piece and the like, friction is generated between the components and other components to generate powder or particles, the substances enter the oil storage cavity C3 along with lubricating oil, and the filtering is performed through the filter screen 27, so that the powder or particles in the oil storage cavity C3 can be reduced or prevented from entering the oil pump cavity 20, and the cleanliness of the lubricating oil entering the oil pump cavity 20 is improved. In addition, through setting up the adsorption part 21 to the adsorption part 21 is located oil pump inner chamber 20 at least partially, can guarantee that the metal powder or the metal particle thing that oil pump self produced in the operation in-process can be adsorbed by adsorption part 21, has guaranteed the cleanliness of the lubricating oil that enters into in the pivot 3 oil feed through hole 30, prevents that lubricating oil from carrying to the part department that other running parts were located in the compressor, causes the damage of running parts and its cooperation part, improves the guard action.

Referring to fig. 3 and 10, and referring to fig. 11, in this embodiment, the movable scroll 4 is connected to an end portion of the rotating shaft 3, specifically, the movable scroll 4 includes an assembling portion 44, the assembling portion 44 is located on a side of the movable end plate 41 away from the movable scroll 42, the assembling portion 44 is provided with an assembling hole 44a, the compressor includes a bearing member 43, the rotating shaft 3 is cooperatively connected with the assembling hole 44a through the bearing member 43, a center line of the assembling hole 44a and a center line of a section of the rotating shaft 3, where the driving mechanism 9 cooperates with each other, are eccentrically arranged, and the rotating shaft 3 drives the movable scroll 4 to translate during rotation, so that the movable scroll 42 is meshed with the fixed scroll 52, and the refrigerant is continuously compressed under the meshing motion of the movable scroll 42 and the fixed scroll 52. More specifically, the compressor includes an eccentric portion 31, the eccentric portion 31 being connected to an end of the rotating shaft 3, the eccentric portion 31 being coupled to the fitting hole 44a through a bearing member 43. In this embodiment, the eccentric portion 31, the bearing member 43, etc. are located in the bearing housing cavity 60 of the main bearing housing 6.

In the process of compressing the refrigerant, the movable scroll 4, the bearing member 43, the eccentric portion 31, the rotating shaft 3 and the like are in a state of high-speed operation, and these parts need to be lubricated, so that friction and abrasion are reduced, and noise is reduced. Referring to fig. 11, in the first embodiment, the fitting portion 44 has the oil passing through hole 40, and the oil passing through hole 40 communicates with the outlet of the oil supply through hole 30. The lubricating oil pumped by the oil pump 2 enters the oil supply through hole 30, and then enters the fitting hole 44a from the outlet of the oil supply through hole 30, and lubricates the bearing member 43, the rotating shaft portion, the eccentric portion 31, and the like in the fitting hole 44 a. The number of the oil passing through holes 40 is not particularly limited in this embodiment, and may be designed according to the need.

In the second embodiment, therefore, the lubricant flowing out of the oil supply through hole 30 can enter the movable end plate 41 of the movable scroll 4, and in the process of compressing the refrigerant, the temperature of the lubricant flowing out of the oil supply through hole 30 is lower than the temperature of the movable end plate 41, and in the process of flowing out of the lubricant from the movable end plate 41, part of heat in the movable end plate 41 is transferred to the lubricant, and the lubricant is taken out of the movable end plate 41, and the specific design is as follows: referring to fig. 10 in combination with fig. 12 to 14, the movable end plate 41 is provided with a through oil passage 4a, the through oil passage 4a is at least partially located inside the movable end plate 41, the movable end plate 41 is provided with an oil inlet 4a1 and an oil outlet 4a2, the through oil passage 4a is communicated with the oil inlet 4a1, the through oil passage 4a is communicated with the oil outlet 4a2, and the oil inlet 4a1 and the oil outlet 4a2 penetrate through the end surface of the movable end plate 41 facing away from the movable scroll 42. Through setting up logical oil circuit 4a, lubricating oil can flow in logical oil circuit 4a, and the heat part that the compressor concentrated in the centre in the compression process can be taken away through the lubricating oil in logical oil circuit 4a, avoids the too high condition that leads to part inflation and wearing and tearing to aggravate of temperature. In the related art, an oil way is arranged on the end face of the movable vortex plate or penetrates through the side wall of the movable vortex plate, so that the lubricating effect is usually achieved, and the heat dissipation effect is poor; in this embodiment, inlet port and oil outlet link up the terminal surface that moves the end plate and deviate from the vortex body for lubricating oil can move the end plate and move the terminal surface dorsal surface that the vortex body meets and flow, thereby reach and move the end plate of vortex dish and carry out radiating purpose, simultaneously, lubricating oil can not flow from the lateral wall of driven end plate, guaranteed that lubricating oil can not appear entering into the condition that the chamber of breathing in and then enter into the compression chamber in a large number, avoided lubricating oil to enter into the compression chamber in the radiating of vortex dish in the time of reaching, help improving air inlet efficiency, and then improve the compression efficiency of compressor.

Referring to fig. 14 again, in the present embodiment, the number of the oil passages 4a is plural, each oil passage 4a extends along a direction perpendicular to the thickness of the movable end plate 41, the oil inlet 4a1 is located at the center of the movable end plate 41, one end of each oil passage 4a is communicated with the oil inlet 4a1, each oil passage 4a is respectively communicated with at least one oil outlet 4a2, in other words, the oil passages 4a share the same oil inlet 4a1, and each oil passage 4a is configured with at least one oil outlet 4a2; the oil supply through hole 30 communicates with the oil inlet hole 4a 1. By providing a plurality of oil passages 4a, the heat radiation performance of the opposite end plate 41 is improved. Specifically, the plurality of oil passages 4a are radially distributed, and the plurality of oil passages 4a are uniformly distributed on the movable end plate 41, so that a uniform heat dissipation effect can be achieved.

In order to facilitate the processing of the oil passage 4a, one end of each oil passage 4a far away from the oil inlet hole 4a1 penetrates through the peripheral side surface of the movable end plate 41, and the peripheral side surface of the driven end plate 41 is subjected to hole processing, so that the compressor is quick and effective.

Also for convenience of processing, the oil inlet holes 4a1 and the oil outlet holes 4a2 are each provided along the thickness direction of the movable end plate 41. The sections of the oil passage 4a, the oil inlet hole 4a1 and the oil outlet hole 4a2 are all circular, in other words, the oil passage 4a, the oil inlet hole 4a1 and the oil outlet hole 4a2 are all circular holes, and since each oil passage 4a is communicated with the oil inlet hole 4a1, the aperture of the oil inlet hole 4a1 is larger than that of the oil passage 4 a.

Further, referring again to fig. 12 in combination with fig. 15, the end surface of the movable end plate 41 facing away from the movable scroll 42 has a first plane 41a, and the first plane 41a is at least partially in contact with the main bearing housing 6, and the main bearing housing 6 provides support for the movable scroll 4, and the movable scroll 4 is in sliding contact with the main bearing housing 6 during operation. In this embodiment, the contact may be a direct contact; it is also possible that the contact is indirect, e.g. the compressor comprises a wear part 46, and at least one of the first plane 41a and/or the end surfaces of the main bearing housing 6 that are in contact with the first plane 41a is provided with a wear part 46, the wear part 46 having wear properties such that the orbiting scroll 4 is not in direct contact with the main bearing housing 6, contributing to an extended service life of the orbiting scroll 4 and the main bearing housing 6.

Further, the end surface of the movable end plate 41 facing away from the movable vortex body 42 is provided with a second plane 41b, the outlet end of the oil outlet hole 4a2 penetrates through the second plane 41b, and a first gap CL1 is formed between the second plane 41b and the end surface of the main bearing seat 6, so that the outlet of the oil outlet hole 4a2 can be kept smooth all the time and is not blocked by the end surface of the bearing seat 6 in the action process of the movable vortex disk 4, lubricating oil can smoothly flow and be discharged, and the heat dissipation effect of the movable vortex disk 4 can be improved. In addition, the outlet end of the oil outlet hole 4a2 is close to the first plane 41a, so that the lubricating oil flowing out from the outlet of the oil outlet hole 4a2 can flow to the surface of the wear-resistant portion 46 for lubrication during the planar movement of the orbiting scroll 4. In addition, the compressor includes an anti-rotation part 800, as shown in fig. 16, the anti-rotation part 800 is connected between the orbiting scroll 4 and the main bearing housing 6, the anti-rotation part 800 includes a pin 801 and a pin ring 802, one of the pin 801 and the pin ring 802 is located on the orbiting scroll 4, the other is located on the main bearing housing 6, and the pin 801 is in clearance fit with the pin ring 802; the center hole of the pin ring 802 communicates with the first clearance CL1, and the lubricating oil flowing out from the outlet of the oil outlet 4a2 can enter the pin ring 802 through the first clearance, thereby lubricating both the pin shaft 801 and the pin ring 802.

Referring to fig. 10 again, the end surface of the movable end plate 41 facing away from the movable scroll 42 has a third plane 41c, the oil inlet hole 4a1 penetrates the third plane 41c, a second gap CL2 is formed between the third plane 41c and the bearing member 43, a third gap CL3 is formed between the outlet of the oil supply through hole 30 and the inlet of the oil inlet hole 4a1, and the second gap CL2 is communicated with the third gap CL3, so that part of the lubricating oil flowing out from the outlet of the oil supply through hole 30 can enter the second gap CL2 from the third gap CL3, and further enter the position of the bearing member 43, wherein the bearing member 43 is a sliding bearing, and the lubricating oil can lubricate the matching position between the bearing member 43 and the rotating shaft 3 and/or the matching position between the bearing member 43 and the assembling portion 44. In the present embodiment, the third plane 41c, the second plane 41b, and the first plane 41a are distributed from inside to outside along the radial direction of the movable end plate 41.

Referring again to fig. 10, the inner wall of the assembly hole 44a is provided with a limiting shoulder 44b, and the top surface of the bearing member 43 abuts against the limiting shoulder 44 b.

Referring again to fig. 12 to 14, the compressor further has an oil introduction hole 4a4, the oil introduction hole 4a4 penetrating through the end surface of the movable end plate 41 toward the movable scroll 42, the oil introduction hole 4a4 communicating with the oil passage 4 a; the compressor has a compression chamber V, and the oil introduction hole 4a4 can communicate with the compression chamber V. By providing the oil introduction hole 4a4, in the process of meshing the movable scroll 42 with the fixed scroll 52, the oil introduction hole 4a4 is intermittently communicated with the compression chamber V, and part of lubricating oil in the oil passage 4a can enter the compression chamber V through the oil introduction hole 4a4 during communication to lubricate the matching part of the movable scroll 4 and the fixed scroll 5. In this embodiment, the aperture of the oil introduction hole 4a4 is smaller than the aperture of the oil passage 4a, so that excessive lubricating oil is prevented from entering the compression chamber V, and the compression efficiency is reduced. When the number of the oil introduction holes 4a4 is at least one, the plurality of oil introduction holes 4a4 may communicate with the same oil passage 4a or may communicate with different oil passages 4 a.

In this embodiment, the compression mechanism has a main discharge port 510, specifically, the fixed end plate 51 has a main discharge port 510, a plane perpendicular to the thickness direction of the fixed end plate 51 is defined as a projection plane, the projection of the movable scroll 42 on the projection plane includes a movable scroll inner line 421 and a movable scroll outer line 422, please refer to fig. 4 and 13 in combination with fig. 17, the movable scroll inner line 421 includes a free end O1 and a line start O2, the line start O2 is closer to the main discharge port 510 than the free end O1, and the oil introduction hole 4a4 is closer to the free end O1 than the line start O2. Likewise, the fixed scroll inner profile 521 is closer to the main discharge port 510 than the fixed scroll outer profile 522. In this embodiment, "closer" means closer along a line distance along the line than closer to the line distance. The oil guiding hole 4a4 is arranged closer to the free end O1, so that in the process of meshing the fixed scroll 52 and the movable scroll 42, the position of the oil guiding hole 4a4 is a low-pressure area of the compression cavity, lubricating oil can smoothly enter the compression cavity to effectively lubricate a matching part between the fixed scroll 5 and the movable scroll 4, and the phenomenon that the lubricating oil cannot smoothly enter the compression cavity V due to the influence of relative high pressure in the compression cavity V on the oil guiding hole 4a4 is avoided.

In the process of compressing the refrigerant, the fixed scroll 52 and the movable scroll 42 are meshed to drive the refrigerant to be pushed to the center gradually in the compression cavity V to be compressed, the pressure is increased gradually, when the pressure is high to a certain degree but the exhaust pressure is not reached, the fixed scroll 5 and the movable scroll 4 are separated, so that pressure leakage is caused, and the compression efficiency of the compressor is greatly reduced. For this purpose, referring to fig. 13, the compressor of the present embodiment includes a movable disk tip seal 45, wherein the movable disk tip seal 45 is disposed at an end of the movable scroll 42 facing the fixed end plate 51, and the movable scroll 42 is in sealing contact with the fixed end plate 51 through the movable disk tip seal 45; the compressor includes a fixed-disc tip seal 53, the fixed-disc tip seal 53 is provided at one end of the fixed scroll 52 facing the movable end plate 41, and the fixed scroll 52 is in sealing contact with the movable end plate 41 via the fixed-disc tip seal 53. The sealing abutment is an abutment in the thickness direction of the fixed end plate 51. Because the movable disc top sealing element 45 and the fixed disc top sealing element 53 have elasticity, when the vortex body and the end plate are separated when the fixed vortex disc 5 and the movable vortex disc 4 are subjected to the pressure of compressed refrigerant, the elastic action of the movable disc top sealing element 45 and the fixed disc top sealing element 53 can still be kept in sealing connection with the end plate, the sealing performance of a compression cavity is ensured, and the compression performance of a compressor is improved.

In both the first embodiment and the second embodiment, the lubricating oil flows through the bearing seat inner cavity 60 of the bearing seat in the supporting piece in the oil return process, so that each part in the bearing seat inner cavity 60, including the eccentric part, the bearing piece, the matching part of the movable vortex disk 4 and the supporting piece, and the like, can be lubricated, the abrasion is reduced, and the service life of each part is prolonged; and the supporting member is provided with an oil return path L, the lubricating oil flowing through the bearing seat inner cavity 60 returns to the oil storage cavity C3 in the shell 1 through the oil return path L, and then the lubricating oil is pumped by the oil pump 2, so that the continuous circulation of the lubricating oil in the process of compressing the refrigerant of the compressor is realized. In the above embodiment, the main bearing housing 6 is provided with the gas supply passage 6a, and the refrigerant enters the suction chamber from the gas supply passage 6a, and then enters the compression chamber from the suction chamber for compression. In the related art, an isolation cover is provided between the motor and the working fluid suction port for preventing heat generated by the motor serving as a driving mechanism from being transferred to the sucked refrigerant, and although the isolation cover plays a role of isolating heat transfer and preventing the sucked refrigerant from being heated, the sucked refrigerant is affected by lubricating oil of return oil, so that refrigerant gas carries a large amount of lubricating oil from the gas supply channel 6a into the gas suction cavity, the refrigerant entering the compression cavity carries a large amount of lubricating oil, resulting in low volumetric efficiency and reduced compression efficiency of the compressor, and for this reason, in the embodiment, the compressor comprises the oil-gas isolation cover 8, the oil-gas isolation cover 8 is located in the casing 1, and the oil-gas isolation cover 8 is located at least partially between the gas supply channel 6a and the oil return channel L. Wherein, oil gas cage 8 is connected with main bearing housing 6, and the center of oil gas cage 8 has the centre bore that is used for the installation. The oil-gas isolation cover 8 is arranged to enable the oil returned from the oil return channel 6a and the oil return channel L to be separated, so that the situation that lubricating oil returned from the oil return channel is mixed into refrigerant gas flowing to the oil supply channel can be greatly reduced, the oil carrying amount of the refrigerant entering the air suction cavity from the oil supply channel 6a is reduced, the problem that the volume rate is reduced due to the fact that a large amount of lubricating oil is sucked into the compression cavity is solved, and the compression efficiency of the compressor is improved.

Further, referring to fig. 2, 3, 16 and 18, the casing 1 has an air inlet 10, an air supply channel 6a communicates with the air inlet 10, an air suction chamber S communicates with the air supply channel 6a, an oil return path L communicates with the oil storage chamber C3, and an oil-gas isolation cover 8 is provided between the air inlet 10 and the oil return path L. The suction chamber S and the oil storage chamber C3 are respectively located at opposite sides of the oil-gas separation cover 8, specifically, the suction chamber S and the oil storage chamber C3 are respectively located at opposite sides of the oil-gas separation cover 8 along the axial direction of the rotating shaft 3, so that the refrigerant enters the casing 1 from the air inlet 10 and flows upwards, i.e. towards the main bearing seat 6, while the lubricating oil flows downwards from the bearing seat cavity 60 towards the bottom plate of the casing 1, the flowing direction of the refrigerant is opposite to the flowing direction of the lubricating oil, and the oil-gas separation cover 8 is located between the flow paths of the refrigerant and the lubricating oil, thereby reducing or even avoiding the lubricating oil entering the suction chamber S to a great extent. In this embodiment, the plurality of air supply channels 6a are provided, the plurality of air supply channels 6a are distributed in a circumferential array with the center line of the main bearing seat 6 as the center, and the phases of the movable scroll 42 and the fixed scroll 52 are 180 degrees different, so that the crescent compression cavities are formed into two pairs after the movable scroll 42 and the fixed scroll 52 are meshed, and the plurality of air supply channels 6a are uniformly distributed, so that refrigerant gas is uniformly and fully sucked into the compression cavities to be compressed, and the volume ratio is improved.

Referring again to fig. 19, the compressor has a casing cavity C, the casing cavity C includes a first cavity C1 and a second cavity C2, and the first cavity C1 communicates with the second cavity C2; the first cavity C1 is closer to the support than the second cavity C2, the first cavity C1 comprising a first subchamber C11 and a second subchamber C12, the hydrocarbon-insulated housing 8 being located between the first subchamber C11 and the second subchamber C12; the air inlet 10 and the air supply channel 6a are both communicated with the first subchamber C11, the oil return path L is communicated with the second subchamber C12, the first subchamber C11 and the second subchamber C12 are both communicated with the second inner chamber C2, in other words, the first subchamber C11 is the peripheral space of the oil-gas isolation cover 8, the second subchamber C12 is the inner peripheral space of the oil-gas isolation cover 8, the second chamber C2 comprises an oil storage chamber C3, and the oil storage chamber C3 is located at the bottom of the second chamber C2. The refrigerant enters the first subchamber C11 (i.e., the outer peripheral space of the oil-gas barrier 8) from the intake port 10, then enters the suction chamber S from the gas supply passage 6a, and the oil returned from the bearing housing inner chamber 60 to the oil reservoir chamber C3 enters the second subchamber C12 (i.e., the inner peripheral space of the oil-gas barrier 8) through the oil return passage L, and then flows toward the oil reservoir chamber C3. Further, the casing 1 comprises a bottom plate 14, the air inlet 10 comprises an opening 101 positioned on the inner wall surface of the casing 1, the vertical distance l1 from the bottom end surface of the oil-gas isolation cover 8 to the inner end surface of the bottom plate 14 is smaller than the minimum vertical distance l2 from the opening 101 to the inner end surface of the bottom plate 14, in other words, the bottom end surface of the oil-gas isolation cover 8 is closer to the bottom plate 14 than the opening 101, so that the refrigerant entering from the opening 101 can flow towards the direction of the air supply channel 6a under the separation blocking effect of the oil-gas isolation cover 8.

Referring to fig. 20 and 21, the oil-gas separator 8 has an air inlet 84 and an air outlet 85, the air inlet 84 is opposite to the opening 101, the air inlet 84 is communicated with the first subchamber C11 and the second subchamber C12, the air outlet 85 is communicated with the first subchamber C11 and the second subchamber C12, and the air outlet 85 is spaced from the air inlet 84 along the circumferential direction of the oil-gas separator 8, so that the refrigerant gas has a certain flow stroke from the air inlet 84 to the air outlet 85. Some of the refrigerant entering from the opening 101 enters the inner peripheral space (i.e., the second subchamber C12) of the oil-gas separation cover 8 through the air inlet hole 84, and the refrigerant gas can dissipate heat and cool the lubricating oil returned in the second subchamber C12 in the process of flowing in the second subchamber C12, and when the refrigerant flows to the air outlet hole 85, part of the refrigerant can flow from the air outlet hole 85 to the outer peripheral space (i.e., the first subchamber C11) of the oil-gas separation cover 8, and then enters the suction cavity from the air supply channel 6 a. According to the embodiment, the oil-gas separation effect is achieved through the oil-gas isolation cover 8, a large amount of lubricating oil is prevented from entering the compression cavity, the risk of liquid impact can be reduced, and in addition, the lubricating oil for oil return can be cooled and radiated. .

Referring to fig. 19 again, a gap CL is formed between the end of the oil-gas isolating cover 8 away from the main bearing seat 6 and the inner wall of the casing 1, and the gap CL is communicated with the oil storage chamber C3, and a space is formed between the air inlet 10 and the air supply channel 6a, specifically, a space is formed between the opening 101 and the air supply channel 6 a. When the refrigerant gas flowing in from the gas inlet 10 contains liquid (such as liquid refrigerant, liquid lubricant, etc.), the liquid mixed in the refrigerant gas enters the interior of the casing 1, and because a certain distance exists between the opening 101 and the gas supply channel 6a, the liquid gathers and flows from the gap CL to the oil storage chamber C3 under the action of gravity, so that the liquid entering into the compression chamber is reduced or avoided, and the risk of liquid impact is reduced. In addition, the liquid also receives the resistance of the oil-gas isolation cover 8, is hung on the outer wall of the oil-gas isolation cover 8, and flows to the oil storage cavity C3 along the outer wall of the oil-gas isolation cover 8.

Referring to fig. 20 and 21 again, in the present embodiment, the oil-gas isolation cover 8 has an annular structure, the oil-gas isolation cover 8 includes a connecting portion 81 and an extending portion 82, the extending portion 82 is connected with the connecting portion 81, and the connecting portion 81 is connected with the main bearing seat 6. In order to enable the liquid hanging on the outer wall of the oil and gas isolation cover 8 to smoothly flow to the oil storage cavity C3, the diameter of at least part of the extension portion 82 is increased in the direction from the main bearing seat 6 to the bottom plate 14, and the increase can be incremental or stepwise, so that the accumulation of the liquid on the outer wall of the oil and gas isolation cover 8 is reduced. The extension 82 has a distal bent portion 83, and the distal bent portion 83 extends toward the driving mechanism 9, so that the lubricating oil flowing along the wall surface of the oil-gas separator 8 can flow to the driving mechanism 9 to lubricate and cool the driving mechanism 9.

The driving mechanism 9 is provided with an oil passing channel 90, the oil passing channel 90 is communicated with the oil storage cavity C3, and lubricating oil flows out from the oil return channel L, passes through the second subchamber C12, then enters the driving mechanism 9 positioned in the second cavity C2, passes through the driving mechanism 9 and returns to the oil storage cavity C3. Referring to fig. 16, the driving mechanism 9 is a motor, and includes a stator assembly 91 and a rotor assembly 92, the stator assembly 91 is matched with the rotor assembly 92, the rotor assembly 92 is connected with the rotating shaft 3, when the driving mechanism 9 is powered on, a magnetic field generated by the stator assembly 91 interacts with a magnetic field generated by the rotor assembly 92, and the rotor assembly 92 keeps rotating to drive the rotating shaft 3 to rotate. In the present embodiment, the oil passage 90 includes a first oil passage 90a penetrating the rotor assembly 92 in a direction from the main bearing housing 6 toward the bottom plate 14, and a second oil passage 90b penetrating the stator assembly 91 in a direction from the main bearing housing 6 toward the bottom plate 14, and the second oil passage 90b is provided near the inner wall of the casing 1. Through setting up the oil passage to deciding, rotor subassembly, lubricating oil can cool off and dispel the heat when passing through actuating mechanism 9 through the oil passage.

Referring again to fig. 19, in this embodiment, the support further includes a main bearing 61, and the rotating shaft 3 is mounted in cooperation with the main bearing housing 6 through the main bearing 61; at least one of the main bearing housing 6 and the main bearing 61 has an oil return L that communicates with the housing inner chamber 60 and the second subchamber C12. The oil return path L comprises a pore path L1, the pore path L1 is positioned on the main bearing seat 6, and the pore path L1 is communicated with the bearing seat inner cavity 60 and the second subchamber C12; the plurality of pore canals L1 are arranged in a circumferential array with the center line of the main bearing seat 6 as the center; the duct L1 is positioned on the outer side of the main bearing 61 along the radial direction of the rotating shaft 3; the main bearing 61 is a rolling bearing, and the oil return path L further includes a gap L2 between rolling elements in the main bearing 61. The compressor rotates the rotary shaft 3 during compression of the refrigerant, and the rolling elements in the main bearing 61 are operated at high speed, and although there is a gap between the rolling elements, during operation of the main bearing 61, the rolling elements may throw up the lubricating oil flowing through the gap between the rolling elements, causing liquid impact, and damaging the movable disk, the main bearing housing 6, the eccentric portion 31, and the like, and therefore, the main bearing housing 6 is provided with the duct L1, and the duct L1 is located radially outside the main bearing 61. Thus, the lubricating oil in the bearing seat inner cavity 60, especially the lubricating oil flowing out from the oil passage 4a of the driven end plate 41 in the above embodiment, can reach the duct L1 first, return oil to the oil storage cavity C3 through the duct L1, so as to reduce the situation that a large amount of lubricating oil approaches the main bearing 61 and causes liquid impact, and a small amount of lubricating oil enters between the rolling bodies of the main bearing 61 to play a role in lubrication, so as to prolong the service life of the main bearing 61.

When the scroll compressor operates at a low evaporation temperature, problems such as increased specific volume of suction air, increased pressure ratio, rapid increase of exhaust temperature and the like can occur, so that the performance of the refrigeration compressor is rapidly reduced, the heating capacity is insufficient and the operation is difficult, and in order to solve the problem, the compressor in the embodiment is provided with an enthalpy-increasing channel 100, the compression mechanism can realize mixed cooling of the injection refrigerant while compressing the refrigerant through the enthalpy-increasing channel 100, and the exhaust capacity of the compressor is improved. Referring to fig. 22 to 23 in combination, the enthalpy increasing channel 100 includes a cover channel 101 and a fixed scroll channel 102, the cover channel 101 and the fixed scroll channel 102 can be communicated, the cover channel 101 is located on the cover 7, the compressor has an enthalpy increasing channel inlet 70a and at least one cover channel outlet 70b, the cover channel 101 communicates the enthalpy increasing channel inlet 70a and the cover channel outlet 70b, the fixed scroll channel 102 is located on the fixed end plate 51, and at least part of the fixed scroll channel 102 has an included angle θ with the thickness direction of the fixed end plate 51, wherein the included angle θ is greater than 0 ° and less than 180 °, in other words, at least part of the fixed scroll channel 102 is arranged in a non-vertical manner.

In this embodiment, at least one cover passage outlet 70b is provided, and 1 cover passage outlet 70b is used in the following embodiments. Specifically, referring to fig. 16, 22 and 23, the fixed end plate 51 has a stationary disc passage inlet 50a and an enthalpy-increasing passage outlet 50b, the fixed scroll passage 102 communicates with the stationary disc passage inlet 50a and the enthalpy-increasing passage outlet 50b, the cover passage outlet 70b and the stationary disc passage inlet 50a can communicate, and the enthalpy-increasing passage outlet 50b communicates with the compression chamber V. In the process of compressing the refrigerant, the enthalpy-increasing channel 100 is used for receiving the refrigerant outside the compressor, in this embodiment, the refrigerant gas enters the cover channel 101 from the enthalpy-increasing channel inlet 70a, then flows out of the cover channel 101 from the cover channel outlet 70b, then can enter the fixed scroll channel 102 from the fixed scroll channel inlet 50a, then flows out of the fixed scroll channel 102 from the enthalpy-increasing channel outlet 50b and enters the compression cavity V, so as to realize mixed cooling of the refrigerant gas while compressing and improving the exhaust capacity of the compressor.

Further, the stationary disc channel inlet 50a and the enthalpy-increasing channel outlet 50b are respectively located at two sides of the fixed end plate 51 along the thickness direction, a plane perpendicular to the thickness direction of the fixed end plate 51 is defined as a projection plane, and projections of the stationary disc channel inlet 50a and the enthalpy-increasing channel outlet 50b on the projection plane are at least partially non-overlapping. In other words, the stationary plate passage inlet 50a and the enthalpy increasing passage outlet 50b are not in the same through hole provided in the thickness direction of the fixed end plate 51. Referring again to fig. 23, in the present embodiment, the fixed end plate 51 has the main discharge port 510, the enthalpy increasing passage outlet 50b is located on the outer side of the main discharge port 510 in the radial direction, and the main discharge port 510 communicates with the compression chamber V, in other words, the enthalpy increasing passage outlet 50b and the main discharge port 510 do not communicate with the same compression chamber. In addition, since the crescent-shaped compression chambers are usually two pairs, the fixed scroll passage 102 and the enthalpy-increasing passage outlet 50b are two, and each fixed scroll passage 102 is respectively communicated with one enthalpy-increasing passage outlet 50b, that is, the refrigerant for increasing enthalpy flowing out from the cover passage outlet 70b is divided into two air flows to enter the corresponding fixed scroll passage 102, and then enters the two pairs of compression chambers for supplementing air and increasing enthalpy.

Further, referring to fig. 22 in combination with fig. 16, the fixed scroll passage 102 includes a first passage section 102a, the first passage section 102a is located in the fixed end plate 51, and the first passage section 102a is at least partially disposed in a direction perpendicular to a thickness of the fixed end plate 51, in other words, the first passage section 102a is at least partially disposed in the fixed end plate 51 in a horizontal direction.

In the process of compressing the refrigerant by the compressor, the precision requirements of the movable scroll 4 and the fixed scroll 5 are very high due to the characteristic of mutual vortex engagement of the fixed scroll 52 and the movable scroll 42, machining is generally adopted, at least one end of the first channel section 102a extends out of the peripheral side wall of the fixed end plate 51 for facilitating machining of the first channel section 102a, the compressor comprises a sealing head 54, one end of the first channel section 102a, which is close to the outer wall surface of the fixed end plate 51, is provided with the sealing head 54, namely the first channel section 102a is drilled from the peripheral side wall of the fixed end plate 51, and then is plugged by the sealing head 54. Further, the fixed scroll passage 102 includes a second passage section 102b, the second passage section 102b communicating the first passage section 102a and the fixed scroll passage inlet 50a, the second passage section 102b being provided along the thickness direction of the fixed end plate 51; the fixed scroll passage 102 further includes a third passage section 102c, the third passage section 102c communicating the first passage section 102a and the enthalpy-increasing passage outlet 50b, the third passage section 102c being provided along the thickness direction of the fixed end plate 51. The second channel section 102b and the third channel section 102c are all arranged in the vertical direction, so that the processing is convenient, and the refrigerant for increasing enthalpy is sprayed into the compression cavity from the enthalpy increasing channel outlet 50b after sequentially passing through the second channel section 102b, the first channel section 102a and the third channel section 102c from the stationary disc channel inlet 50 a. In this embodiment, the first channel section 102a is communicated with the second channel section 102b, an included angle is formed between the first channel section 102a and the second channel section 102b, the second channel section 102b is communicated with the cover body channel outlet 70b, and the second channel section 102b is arranged along the thickness direction of the fixed end plate 51, so that the drill bit of the second channel section of the fixed scroll channel communicated with the cover body channel outlet can be processed forward relative to the fixed end plate in the processing process, and the processing is convenient. In the non-air-supplementing state, the enthalpy-increasing channel 100 corresponds to a clearance volume, which tends to reduce the volumetric efficiency of the compressor, and in order to reduce the clearance volume of the compressor, referring to fig. 22 in combination with fig. 24 and 25, the compressor includes a check valve 200, where the check valve 200 is at least partially located in the enthalpy-increasing channel 100, and the check valve 200 can conduct the enthalpy-increasing channel 100 from the enthalpy-increasing channel inlet 70a to the enthalpy-increasing channel outlet 50b, and can close from the enthalpy-increasing channel outlet 50b to the enthalpy-increasing channel inlet 70a, so as to reduce the clearance brought by the enthalpy-increasing channel 100 and ensure the volumetric efficiency of the compressor.

Referring again to fig. 22 and 24, in some embodiments, the check valve 200 includes a valve plate 201, a stopper 202, and a fastener 203, where the valve plate 201 and the stopper 202 are connected to the cover 7 by the fastener 203, the valve plate 201 is located between the surface of the cover channel outlet 70b and the stopper 202, and a lift gap is provided between the surface of the stopper 202 and the surface of the cover channel outlet 70 b. In order to facilitate the installation of the check valve 200, the enthalpy-increasing channel 100 further includes a connecting cavity 103, the connecting cavity 103 is located between the cover 7 and the fixed scroll 5, the cover channel outlet 70b can be communicated with the connecting cavity 103 through the check valve 200, the static disc channel inlet 50a is communicated with the connecting cavity 103, the check valve 200 is located in the connecting cavity 103, and the check valve 200 is fixed on the cover 7. In the air-make-up state, refrigerant gas introduced from the system circuit outside the compressor enters the fixed scroll passage 102 from the enthalpy-increasing passage inlet 70a, and when the pressure of the refrigerant gas increases to a certain extent, the refrigerant gas pushes up the valve plate 201 and enters the connecting cavity 103, then enters the fixed scroll passage 102 from the fixed scroll passage inlet 50a, and finally enters the compression cavity from the enthalpy-increasing passage outlet 50 b. In the present embodiment, the cover 7 has the annular groove 70c, and the annular groove 70c is located outside the cover passage outlet 70b, and by providing the annular groove 70c, the influence of the end surface unevenness on the closing tightness of the valve sheet 201 is reduced.

Referring to fig. 24 and 25, the compressor has a discharge chamber 300, and the discharge chamber 300 is at least partially located between the cover 7 and the compression mechanism, specifically, the discharge chamber 300 is at least partially located between the cover 7 and the fixed scroll 5, and the main discharge port 510 can directly communicate with the discharge chamber 300, and in this embodiment, the discharge chamber 300 is located between the cover 7 and the fixed scroll 5. Since the exhaust cavity 300 and the connecting cavity 103 are both located between the cover body 7 and the fixed scroll 5, in order to ensure that the exhaust cavity 300 and the connecting cavity 103 are not communicated, the compressor comprises a sealing member, the exhaust cavity 300 and the connecting cavity 103 are isolated through the sealing member, and the situation that high-pressure refrigerant gas in the exhaust cavity 300 is mixed with refrigerant gas used for supplementing gas in the connecting cavity 103 is avoided. The sealing member comprises a sealing ring 400, the sealing ring 400 is positioned between the cover body 7 and the fixed scroll 5, one side of the sealing ring 400 along the thickness direction of the fixed end plate 51 is in sealing abutting joint with the fixed end plate 51, and the other side of the sealing ring 400 along the thickness direction of the fixed end plate 51 is in sealing abutting joint with the cover body 7; the seal ring 400 includes an outer seal portion 401 and a blocking portion 402, the outer seal portion 401 being located at the outer periphery of the exhaust chamber 300 and the connection chamber 103, and the blocking portion 402 being located between the exhaust chamber 300 and the connection chamber 103. In other words, the seal ring 400 is a special-shaped seal ring, and has an overall 8-shaped structure. Of course, in other embodiments, two sealing rings may be used in combination to seal the vent chamber 300 and the connecting chamber 103, respectively.

In order to facilitate the installation of the seal ring 400, the cover 7 has a first planar portion 71, the fixed scroll 5 has a second planar portion 55, the first planar portion 71 and the second planar portion 55 are disposed opposite to each other in the thickness direction of the fixed end plate 51, at least one of the first planar portion 71 and the second planar portion 55 is provided with a seal groove 403, and the seal ring 400 is at least partially located in the seal groove 403. By arranging the sealing groove 403, the sealing ring 400 is firstly installed in the sealing groove 403 in the process of assembling the compressor, so that the problem that the sealing failure is caused by dislocation of the sealing ring 400 due to the fact that the sealing ring 400 slips out of the sealing groove is prevented.

The sealing member is capable of isolating the air suction cavity S from the air discharge cavity 300 and isolating the air suction cavity S from the air discharge cavity 300, i.e., the sealing member is at least partially located between the air discharge cavity 300 and the air suction cavity S and the sealing member is at least partially located between the connecting cavity 103 and the air suction cavity S. Wherein the compressor includes a housing wall 72, the housing wall 72 is located at an outer peripheral side of an outer wall of the fixed scroll 5, and a suction chamber S is located at least partially between the housing wall 72 and the outer wall of the fixed scroll 5. In this embodiment, the housing wall 72 is a part of the cover 7, or the housing wall 72 and the cover 7 are in a separate structure, and are connected.

In addition, the seal includes a sealing gasket 500, the sealing gasket 500 being located between the first planar portion 71 and the second planar portion 55, the sealing gasket 500 being located at the periphery of the seal ring 400. The sealing performance between the cover 7 and the fixed scroll 5 is further enhanced by the sealing gasket 500, and the suction chamber S is prevented from communicating with the discharge chamber 300 and the connection chamber 103.

In the related art, the fixed disc is provided with the exhaust hole and the enthalpy-increasing hole, the exhaust hole and the enthalpy-increasing channel are distributed and provided with different openings, namely the exhaust hole and the enthalpy-increasing hole are not shared, so that the number of the openings on the end plate of the fixed disc is increased, the processing procedure of the fixed vortex disc is increased, and the structural strength of the fixed vortex disc is reduced. Therefore, referring again to fig. 16, 22 and 23, in the present embodiment, the fixed end plate 51 has the communication hole 512, the communication hole 512 penetrates the fixed end plate 51 in the thickness direction, the communication hole 512 communicates with the compression chamber V, the communication hole 512 can communicate with the exhaust chamber 300, and in addition, the communication hole 512 can also communicate with the enthalpy increasing channel 100, that is, the communication hole can communicate with both the compression chamber and the exhaust chamber, and also can communicate with the enthalpy increasing channel, so that the enthalpy increasing channel and the communication hole communicating the compression chamber and the exhaust chamber, that is, the unloading hole, are shared, the structure is simple, and the number of openings of the fixed end plate is reduced. In this embodiment, the communication hole 512 has a distance from the main discharge port 510, in other words, the communication hole 512 is not the same hole as the main discharge port 510. The embodiment communicates the compression chamber V and the exhaust chamber 300 through the communication hole 512, can meet the auxiliary exhaust effect of the compressor for unloading adjustment in the process of compressing the refrigerant, and also can communicate the enthalpy-increasing channel 100 and the compression chamber V, so that the air-supplementing enthalpy-increasing hole and the auxiliary unloading hole share the hole, the situation that the hole needs to be additionally formed in the fixed end plate 51 is avoided, the structural damage to the fixed end plate 51 is reduced, the structural strength of the fixed end plate 51 is improved, the processing procedure of the hole is reduced, and the processing efficiency of the fixed scroll 5 is improved.

In the present embodiment, since the communication hole 512 can communicate with the enthalpy increasing passage 100, the bypass port 512a is opened in the wall of the communication hole 512, and the bypass port 512a communicates with the enthalpy increasing passage 100.

In the air-supplementing state, the intermediate pressure air is supplemented to the compressor compression intermediate chamber, and therefore, the position of the communication hole 512 cannot be the high pressure chamber. Referring to fig. 4 again, a plane perpendicular to the thickness direction of the fixed end plate 51 is defined as a projection plane, and the projection of the fixed scroll 52 on the projection plane includes a fixed scroll inner line 521 and a fixed scroll outer line 522; the projection of the orbiting scroll 42 on the projection surface includes an orbiting scroll inner line 421 and an orbiting scroll outer line 422, and when the free end O1 of the orbiting scroll inner line 421 contacts the fixed scroll outer line 522, the orbiting scroll inner line 421 and the fixed scroll outer line 522 have a plurality of contact points (P1, P2 … …) in a line direction from the free end O1 to the line start O2, and the projection of the communication hole 512 on the projection surface approaches the second contact point P2, and at this time, the free end O1 coincides with the first contact point P1. When the free end O1 of the inner moving scroll line 421 contacts the outer fixed scroll line 522, the volume of the compression chamber is the largest, and the outermost compression chamber in the largest volume is just formed, and the pressure in the outermost compression chamber is equal to the pressure in the suction chamber S, so that the projection of the communication hole 512 on the projection surface is designed close to the second contact point P2, and the communication hole 512 is ensured to be at the middle-low pressure position of the compression chamber. Wherein the line start O2 is closer to the main discharge port 510 than the free end O1.

When the movable scroll 42 is further engaged with the fixed scroll 52, the volume of the outermost compression chamber starts to decrease and the pressure starts to gradually increase, and if the free end O of the movable scroll inner line 421 is in contact with the fixed scroll outer line 522, the communication hole 512 is exposed to the outermost compression chamber, and when the air is supplied to the compression chamber through the enthalpy increasing passage 100, since a part of the air sucked into the outermost compression chamber due to the air supply of the movable scroll 4 is pushed out of the compression chamber and returned to the suction chamber by the enthalpy increasing passage 100, the discharge amount and the compression efficiency of the compressor are reduced, and therefore, when the free end O1 of the movable scroll inner line 421 away from the main discharge port 510 is in contact with the fixed scroll outer line 522, the projection of the communication hole 512 on the projection surface is covered by the movable scroll 42, as shown in fig. 4, and thus, only after the movable scroll 42 is further engaged with the fixed scroll 52, the communication hole 512 is exposed to the outermost compression chamber, as shown in fig. 26, and even if the enthalpy increasing passage 100 is supplied to the compression chamber, the air is sucked into the compression chamber, the air is discharged from the outermost compression chamber, the air is not sucked into the compression chamber, and the air is not increased in the enthalpy increasing passage, and the discharge amount is reduced, and the air is discharged from the whole compression chamber, and the air is discharged from the compression chamber, and the compression efficiency is reduced. In this embodiment, the projection of the communication hole 512 on the projection surface is closer to the fixed scroll inner line 521 than the fixed scroll outer line 522, which contributes to the service time of the communication hole 512 during the engagement of the movable scroll 42 and the fixed scroll 52.

In addition, when the compressor just starts to compress the refrigerant, if the liquid exists in the compression cavity, the liquid can be timely discharged to the exhaust cavity 300 through the communication hole 512, so that the liquid impact condition is reduced, the problem that the structural strength is reduced due to high-pressure liquid impact in the subsequent process of compressing the refrigerant by the movable scroll 4 and the fixed scroll 5 is avoided, and the functions of air supplementing, enthalpy increasing, auxiliary unloading and liquid impact prevention can be realized through the communication hole 512.

Referring to fig. 16 and 26, in the present embodiment, the fixed end plate 51 further has a sub-discharge port 511, the sub-discharge port 511 communicates with the compression chamber V, the sub-discharge port 511 is located radially outside the main discharge port 510, and the sub-discharge port 511 is located between the main discharge port 510 and the communication hole 512, in other words, on the projection surface, a distance L1 from the projection center of the communication hole 512 to the projection center of the main discharge port 510 is larger than a distance L2 from the projection center of the sub-discharge port 511 to the projection center of the main discharge port 510, and the sub-discharge port 511 penetrates the fixed end plate 51 in the thickness direction of the fixed end plate 51. Further, the center of the auxiliary discharge port 511 on the projection surface and the center of the communication hole 512 on the projection surface are positioned on the same straight line, and the processing of the communication hole 512 and the auxiliary discharge port 511 is facilitated, repeated positioning is not needed, and the processing efficiency of the fixed scroll 5 is improved. In the present embodiment, the number of the communication holes 512 and the sub-discharge holes 511 is two, the crescent-shaped compression chambers are formed in two pairs, one communication hole 512 of the two communication holes 512 communicates with one compression chamber of the two pairs, the other communicates with the communication hole 512 and the other compression chamber of the two pairs, and similarly, one sub-discharge hole 511 of the sub-discharge holes 511 communicates with one compression chamber of the two pairs, and the other sub-discharge hole 511 communicates with the other compression chamber of the two pairs.

Referring to fig. 22 in combination with fig. 27, in the present embodiment, the enthalpy increasing channel 100 includes a fixed scroll channel 102, the fixed scroll channel 102 is located in the fixed end plate 51, the fixed scroll channel 102 is at least partially disposed along a direction perpendicular to a thickness of the fixed end plate 51, the fixed scroll channel 102 includes a first channel segment 102a, and at least one end of the first channel segment 102a extends out of an outer wall surface of the fixed end plate 51, i.e. at least one end of the first channel segment 102a penetrates through the outer wall surface of the fixed end plate 51. In this embodiment, the number of the communication holes 512 and the fixed scroll passage 102 is two, and each communication hole 512 is respectively communicated with one fixed scroll passage 102.

In one embodiment, the enthalpy increasing channel 100 includes a cover channel 101, the cover channel 101 is located on the cover 7, the enthalpy increasing channel 100 further includes a connecting cavity 103, the connecting cavity 103 is located between the cover 7 and the fixed scroll 5, the cover channel 101 and the fixed scroll channel 102 are both communicated with the connecting cavity 103, the compressor has an enthalpy increasing channel inlet 70a, and the cover channel 101 is communicated with the enthalpy increasing channel inlet 70 a. The enthalpy-increasing channel inlet 70a is positioned on the top wall of the cover body 7, and the connecting cavity 103 is positioned between the end surface of the fixed end plate 51, which is far away from the compression cavity V, and the cover body 7; the fixed scroll passage 102 includes a first passage section 102a, the first passage section 102a is at least partially disposed along a direction perpendicular to a thickness of the fixed end plate 51, at least one end of the first passage section 102a extends out of a peripheral side wall of the fixed end plate 51, the compressor includes a seal head 54, and one end of the first passage section 102a, which is close to the peripheral side wall of the fixed end plate 51, is provided with the seal head 54; the fixed scroll passage 102 includes a second passage section 102b, the second passage section 102b communicating the first passage section 102a and the connection chamber 103, the second passage section 102b being provided along the thickness direction of the fixed end plate 51. And the compressor includes a check valve 200, the check valve 200 being at least partially located in the enthalpy increasing passage 100, the check valve 200 being capable of conducting the enthalpy increasing passage 100 in a direction from the enthalpy increasing passage inlet 70a to the communication hole 512. In this embodiment, the arrangement of the enthalpy increasing passage 100, the arrangement of the check valve 200, and the arrangement of the sealing member are the same as those of the embodiment shown in fig. 22, and the opening of the communication hole 512 toward the compression chamber in this embodiment is the enthalpy increasing passage outlet 50b, which will not be described in detail.

In another embodiment, please refer to fig. 27, which differs from the previous embodiment in that: the enthalpy increasing passage inlet 70a is located at the peripheral side wall of the cover 7, and the connecting chamber 103 is located between the peripheral side wall of the fixed end plate 51 and the cover 7. In the air-supplementing state, air is supplemented from the enthalpy-increasing passage inlet 70a into the connecting chamber 103 between the peripheral side wall of the fixed end plate 51 and the cover 7, then from the fixed scroll passage 102 into the communication hole 512, and into the compression chamber through the communication hole 512. The first channel section 102a includes a first channel 102d and a second channel 102e, the first channel 102d communicates with the second channel 102e and the communication hole 512, the second channel 102e communicates with the first channel 102d and the connection cavity 103, the cross-sectional area of the first channel 102d is smaller than the cross-sectional area of the second channel 102e, and the cross-sectional area is defined as the area obtained by cutting off the respective channels on a plane perpendicular to the direction of the center line of the respective channels. By reducing the cross-sectional area of the first flow passage 102d, a throttling effect is achieved. In this embodiment, a sealing member is also provided, and the sealing member is located between the cover 7 and the fixed scroll 5, not shown in the drawing, and a sealing member is provided between the connection chamber 103 and the discharge chamber 300, and a sealing member is provided between the suction chamber S and the connection chamber 103, and the connection chamber 103 and the suction chamber S are isolated by the sealing member, so that the air supply for enthalpy increase is prevented from being mixed with the discharge chamber 300 and the suction chamber S.

Referring to fig. 16 and 25 again, and referring to fig. 28, 29a and 29b, in the present embodiment, the compressor includes a valve member 700c, the valve member 700c is mounted on the fixed end plate 51, and the valve member 700c is at least partially located in the exhaust chamber 300, and the valve member 700c can cover the communication hole 512; in addition, the compressor further includes a main discharge valve 700a, the main discharge valve 700a is mounted to the fixed end plate 51, and the main discharge valve 700a is at least partially located in the discharge chamber 300, and the valve member 700c can cover the main discharge port 510; the valve member 700c is at least partially integrally formed with the main exhaust valve 700a, and in addition, the compressor includes an auxiliary exhaust valve 700b, the auxiliary exhaust valve 700b is mounted to the fixed end plate 51, and the auxiliary exhaust valve 700b is at least partially located in the exhaust chamber 300, and the auxiliary exhaust valve 700b can cover the auxiliary exhaust port 511; the secondary exhaust valve 700b is at least partially of unitary construction with the primary exhaust valve 700 a.

In the above embodiment, the valve member 700c, the main exhaust valve 700a, and the auxiliary exhaust valve 700b may share the same exhaust valve 700, and the exhaust valve 700 is located in the exhaust chamber 300, as shown in fig. 25 and 28; or may be independent of each other. The exhaust valve 700 comprises a lift limiter 701, an elastic valve plate 702 and a valve seat, wherein the elastic valve plate 702 is positioned between the lift limiter 701 and the valve seat, the lift limiter 701 is at least partially a powder metallurgy part, and the valve seat is positioned on the fixed scroll 5 in the embodiment. Further, the lift limiter 701 is made of metal powder and is manufactured by a powder metallurgy process. The embodiment also provides a lift limiter processing technology, which comprises the following steps: providing metal powder and a mold; filling metal powder into a mould; pressing the metal powder into a part in the shape of a lift limiter; sintering the product in a closed furnace. The mold has a contour shape of the lift limiter, and comprises a limiting surface forming surface for forming the limiting surface 705, wherein one surface opposite to the limiting surface forming surface is of an open structure, so that metal powder is conveniently filled and pressed, after the pressing is finished, one surface, close to the open surface, of the metal powder is formed into a flush plane, and after sintering, the limiter end surface 708 of the planar structure is obtained. The powder metallurgy process can be used for pressing into a pressed compact with a final size, one-step forming is realized, secondary processing is not needed or is rarely needed, the process is simple and convenient, the processing time and the processing cost are saved, the metal materials can be greatly saved, and the cost of products is reduced.

In this embodiment, the exhaust valve further includes a positioning member 708, the lift limiter 701 and the elastic valve plate 702 are both provided with a perforation 709, the valve seat is provided with a positioning hole 710, the positioning member 708 passes through the perforation 709 and then is connected with the valve seat, and the positioning member 708 is connected with the positioning hole 710 in a matching manner. Wherein, the positioning piece 708 is a screw, the positioning hole 710 is a threaded counter bore, and the positioning piece 708 is in threaded fit with the positioning hole 710.

Further, the lift limiter 701 includes a fixing portion 703 and at least one limiting portion 704, and the limiting portion 704 is integrally formed with the fixing portion 703. The limiting portion 704 has a limiting surface 705, the limiting surface 705 is disposed towards the elastic valve plate 702, a valve gap circulation gap 706 is provided between the limiting surface 705 and the valve seat, when the pressure in the compression chamber reaches a certain pressure, the elastic valve plate 702 is propped open, and the refrigerant gas in the compression chamber enters the exhaust chamber 300 from the valve gap circulation gap 706. Further, the thickness of the limiting portion 704 decreases in a direction away from the fixing portion 703, and the limiting portion 704 includes a head portion 707, and the head portion 707 is located at an end of the limiting portion 704 away from the fixing portion 703; the curvature radius of the limiting surface 705 at the part of the head 707 is more than or equal to 40mm, the limiting surface 705 adopts an arc design with the curvature radius of more than or equal to 40mm, so that the elastic valve plate 702 has better motion characteristics, is suitable for the motion law when the elastic valve plate 702 moves to strike the lift limiter 701, has small contact stress, and has long service life, so that the elastic valve plate 702 is in a normal working state in the process of compressing the refrigerant by the compressor, keeps to be opened timely and closed timely, ensures the volumetric efficiency of the compressor, and further improves the economy and reliability of the compressor.

Further, the lift limiter 701 includes a limiter end surface 708, the limiter end surface 708 being a plane, the limiter end surface 708 and the limit surface 705 being opposite sides of the lift limiter 701 in the thickness direction, respectively. In this embodiment, the limiter end surface 708 is designed to be a plane, which is convenient to process, and at the same time, increases the thickness of the fixing portion 703, and increases the structural strength of the lift limiter 701 on the side close to the fixing portion 703.

Further, the valve member 700c, the main exhaust valve 700a, and the auxiliary exhaust valve 700b are integrally formed with lift limiters, specifically, the limiting portion 704 includes a first limiting portion 704a, a plane perpendicular to the thickness direction of the fixed end plate 51 is defined as a projection plane, and the projection of the first limiting portion 704a on the projection plane covers the projection of the main exhaust port 510 on the projection plane; the stopper 704 includes a second stopper 704b, and the projection of the second stopper 704b onto the projection surface covers the projection of the sub-discharge port 511 onto the projection surface; the stopper 704 includes a third stopper 704c, and the projection of the third stopper 704c onto the projection surface covers the projection of the communication hole 512 onto the projection surface.

Similarly, the valve member 700c, the main exhaust valve 700a, and the auxiliary exhaust valve 700b are also integrally formed, and the elastic valve member 702 includes a first elastic member 702a, where the first elastic member 702a is located between the first limiting portion 704a and the fixed end plate 51, and the projection of the first limiting portion 704a on the projection plane covers the projection of the main exhaust port 510 on the projection plane. The elastic valve plate 702 includes a second elastic piece 702b, the second elastic piece 702b is located between the second limiting portion 704b and the fixed end plate 51, and the projection of the second elastic piece 702b on the projection surface covers the projection of the auxiliary exhaust outlet 511 on the projection surface; the elastic valve plate 702 further includes a third elastic piece 702c, where the third elastic piece 702c is located between the third limiting portion 704c and the fixed end plate 51, and a projection of the third elastic piece 702c on the projection surface covers a projection of the communication hole 512 on the projection surface.

Through designing the lift limiter of valve member 700c, main discharge valve 700a, vice discharge valve 700b as an organic whole structure, with valve member 700c, main discharge valve 700a, the elastic valve piece of vice discharge valve 700b design as an organic whole structure, the equipment of discharge valve has been made things convenient for, the discharge valve of three only needs to share same group locating hole, avoided seting up the condition of too much locating hole on fixed end plate 51, equipment convenient and fast has reduced the structural failure to fixed end plate 51 simultaneously, guaranteed the overall structural strength of fixed end plate 51.

In the present embodiment, on the projection surface, the projection center of the sub discharge port 511 and the projection center of the communication hole 512 are on the same straight line L, the projection center of the main discharge port 510 has a distance L3 from the straight line L, and the projection center of the main discharge port 510 is farther from the fixing portion 703 than the projection center of the sub discharge port 511. The main exhaust port 510 is used as a main exhaust port, the valve clearance flowing gap 706 at the position of the main exhaust port 510 directly influences the exhaust pressure loss degree, if the projection center of the main exhaust port 510 is on the straight line l, the valve clearance flowing gap 706 at the position of the main exhaust port 510 is small, the valve clearance flowing area is small, the pressure loss is large, and the valve clearance flowing gap 706 can be ensured by designing the length of the first limiting part 704a to be long, so that the pressure loss is reduced.

In addition, in order to avoid the influence of the unevenness of the end surface of the fixed end plate 51, and prevent the elastic valve plate from being ejected without reaching a certain pressure due to the protrusion of the end surface, in this embodiment, the fixed end plate 51 is provided with the annular groove 51a on the end surface facing the lift limiter 701, and the annular groove 51a is provided on the radial outer sides of the main discharge port 510, the auxiliary discharge port 511, and the communication hole 512, which helps to improve the closing degree of the elastic valve plate and ensure the volume ratio of the compressor.

The air conditioning system provided by the embodiment can be used for various occasions, such as an automobile air conditioning system and the like. NVH (Noise, vibration, harshness) refers to the short for noise vibration comfort, is a key index for measuring the comfort in a vehicle, and is increasingly valued by private car owners and car enterprises. The compressor is a core component of an automotive air conditioning system and is a non-negligible source of noise and vibration when the compressor is on. The problem of exhaust pulsation of the scroll compressor is remarkable, and particularly in a low-rotation-speed high-load state, the problem of idle NVH of the vehicle is often caused by exhaust pulsation, and air flow pulsation is a main cause of noise of the scroll compressor. In the related art, a muffler is provided in the compressor, but the muffler is installed by introducing other components to be fixed, resulting in complicated installation, and in order to improve the convenience of installation, please refer to fig. 3 and 19, and fig. 30 to 32, the muffler 600 is provided in the cover 7, the cover 7 has the exhaust hole 73, the muffler 600 is partially located in the exhaust chamber 300, the muffler 600 has the muffler chamber 601, the muffler chamber 601 is communicated with the exhaust hole 73, and the muffler chamber 601 is communicated with the exhaust chamber 300. Specifically, muffler 600 has at least one vent 602, vent 602 communicating between muffler chamber 601 and exhaust chamber 300. In the present embodiment, the refrigerant gas discharged from the main discharge port 510 directly enters the discharge chamber 300, and the oil separation process is not required because the refrigerant gas mixed oil amount in this portion is small, so that the compressor does not need to provide an oil separation chamber. In this embodiment, by installing the muffler 600 in the exhaust chamber 300, when the high-pressure refrigerant flow discharged from the compression chamber to the exhaust chamber 300 passes through the muffler 600, acoustic impedance changes, a part of acoustic energy is reflected back to the sound source, thus transmitting acoustic energy is reduced, sound wave transmission of some frequencies is prevented, exhaust pulsation noise is reduced to a great extent by installing the muffler, and driving comfort is improved.

Further, the muffler 600 has at least one vent 602, and the vent 602 communicates between the muffler chamber 601 and the exhaust chamber 300. In this embodiment, the sum of the cross-sectional areas of the vent holes 602 is equal to or greater than the cross-sectional area of the muffler cavity 601, wherein the cross-sectional area is defined as the area obtained by cutting off the respective holes from a plane perpendicular to the center line direction of the respective holes, and the muffler cavity 601 and the vent holes 602 are circular holes. Muffler 600 and exhaust chamber 300 form a built-in helmholtz muffler.

Further, the discharge valve 700 is located between the main discharge port 510 and the vent hole 602, and the high-pressure refrigerant gas discharged from the main discharge port 510 passes through the discharge valve 700, enters the discharge chamber 300, and then enters the muffler chamber 601 through the vent hole 602.

In this embodiment, the vent 602 is located in a wall portion of the muffler 600. At least one vent 602 is located in an end wall of muffler 600 and/or at least one vent 602 is located in a peripheral wall of muffler 600. In some embodiments, the ventilation holes 602 are located on the end wall of the muffler 600, as shown in fig. 3 and 30, at this time, in order to ensure that the sum of the cross-sectional areas of the ventilation holes 602 is equal to or greater than the cross-sectional area of the muffler cavity 601, the number of ventilation holes 602 is one, and the aperture of the ventilation holes 602 is the aperture of the muffler cavity 601, and air flows enter the muffler cavity 601 from the ventilation holes 602, and the air flows interact in the cavity, so that exhaust noise is reduced. In other embodiments, the peripheral wall of the muffler 600 has a plurality of ventilation holes 602, or both the peripheral wall and the end wall of the muffler 600 have ventilation holes 602, as shown in fig. 19 and 31, the hole diameter of the ventilation holes 602 is much smaller than that of the muffler chamber 601, and the muffler 600 itself forms a perforated muffler, and when the air flows through the ventilation holes 602, the air flows inside the small holes, dispersing air resistance, and reducing noise.

In order to facilitate the installation of the muffler 600, in this embodiment, one end of the exhaust hole 73 penetrates through the outer wall of the cover 7, and the other end of the exhaust hole 73 penetrates through the cavity wall of the exhaust cavity 300, in other words, before the muffler 600 is installed, the exhaust hole 73 is communicated with the exhaust cavity 300, when the muffler 600 is installed, the muffler 600 is pressed into the muffler from the outer opening of the exhaust hole 73, and after the muffler 600 is installed, the center line of the exhaust hole 73 coincides with the center line of the muffler 600. To facilitate the fixing of the muffler 600, at least a portion of the muffler 600 is interference-fitted with the exhaust hole 73, so that a tight coupling between the muffler 600 and the cover 7 is obtained by the interference fit. To facilitate the limiting of the muffler 600 during assembly so that it is installed in place, the inner wall of the exhaust hole 73 has a shoulder 731, and the muffler 600 includes a body portion 604 and a boss portion 605, with the boss portion 605 abutting the shoulder 731. When the muffler 600 is assembled, the end of the body 604 away from the boss 605 is pressed in from the outer opening of the exhaust hole 73, and when the boss 605 abuts against the shoulder 731, the muffler is mounted in place, so that the problems of insufficient assembly and excessive assembly are avoided.

Further, one end of the body portion 604 is connected to the boss portion 605, the body portion 604 extends to the exhaust chamber 300, and a chamfer 603 is provided on the outer periphery of one end of the body portion 604 away from the boss portion 605. In this embodiment, the chamfer 603 is provided, so that the condition that the end of the body 604 interferes with the outer opening of the exhaust hole 73 to prevent the body 604 from being pressed in during the assembly of the muffler 600 is avoided, which is helpful for improving the assembly efficiency of the muffler 600, and in this embodiment, the chamfer 603 may be a chamfer or a chamfer.

In this embodiment, one end of the air vent 73 penetrates through the outer side wall of the cover 7, the center line of the air vent 73 is perpendicular to the center line of the main air vent 510, in other words, the center line of the muffler 600 is horizontally arranged, so that the horizontal space of the air vent cavity 300 can be fully utilized, the installation requirement of the muffler 600 can be met without increasing the size of the cover 7 in the transverse direction, i.e., the horizontal direction, and the structure is compact. Of course, in other embodiments, one end of the exhaust hole 73 may extend through the top wall of the cover 7, that is, the center line of the exhaust hole 73 and the center line of the main exhaust port 510 are parallel or collinear, in other words, the center line of the muffler 600 is disposed vertically.

In this embodiment, the compressor is disposed vertically as a whole, that is, the axial direction of the rotating shaft is along the vertical direction, since the lubricant mostly circulates in the space of the casing on the back side of the movable scroll 4, only a small part of the lubricant enters the compression chamber on the front side of the movable scroll 4 to lubricate the mating part between the movable scroll 4 and the fixed scroll 5, and thus the problem of oil is not required to be considered, so that the compressor provided in this embodiment does not need to provide an oil separator to separate the lubricant from the refrigerant gas.

The compressor discharges high-pressure refrigerant gas from the exhaust hole 73, and for convenience of connection with an external part (such as a connection pipe connected with a heat exchanger, etc.), the compressor includes a discharge switching part 74, the discharge switching part 74 includes a connection pipe part 741 and a pressing plate part 742, the connection pipe part 741 is at least partially located in the exhaust hole 73, the compressor includes a sealing part 75, the sealing part 75 is located between an outer wall of the connection pipe part 741 and an inner wall of the exhaust hole 73, and the pressing plate part 742 is connected with an outer wall of the cover 7. The connection method in this embodiment is not particularly limited, and may be one or a combination of several of welding, fastening, clamping, bonding, and the like.

Some of the technical implementations in the above embodiments may be combined or replaced.

The technical principles of the present application have been described above in connection with specific embodiments, but it should be noted that the above descriptions are only for explaining the principles of the present application and should not be construed as limiting the scope of the present application in any way. Other embodiments of the application, or equivalents thereof, will suggest themselves to those skilled in the art without undue burden from the present disclosure, based on the explanations herein.

Claims

1. A compressor, characterized in that: the compressor comprises a fixed scroll, wherein the fixed scroll comprises a fixed end plate, the fixed end plate is provided with a communication hole, the communication hole penetrates through the fixed end plate along the thickness direction, the compressor is provided with a compression cavity and a discharge cavity, the communication hole is communicated with the compression cavity, and the communication hole can be communicated with the discharge cavity;

2. The compressor as set forth in claim 1, wherein: a bypass port is formed in the hole wall of the communication hole, and the bypass port is communicated with the enthalpy increasing channel;

The enthalpy increasing channel comprises a fixed scroll channel, the fixed scroll channel is positioned in the fixed end plate, and the fixed scroll channel is at least partially arranged along the direction perpendicular to the thickness of the fixed end plate;

the number of the communication holes and the fixed vortex disc channels is two, and each communication hole is communicated with one fixed vortex disc channel;

the exhaust cavity is at least partially located between the cover body and the fixed scroll, the compressor includes a valve member mounted to the fixed end plate, and the valve member is at least partially located in the exhaust cavity, and the valve member can cover the communication hole.

3. The compressor as set forth in claim 2, wherein: the fixed vortex plate comprises a fixed vortex body, a plane perpendicular to the thickness direction of the fixed end plate is defined as a projection plane, and the projection of the fixed vortex body on the projection plane comprises a fixed vortex inner molded line and a fixed vortex outer molded line;

the compressor comprises an orbiting scroll, the compression cavity is at least partially positioned between the orbiting scroll and a fixed scroll, the orbiting scroll comprises an orbiting end plate and an orbiting scroll body, the projection of the orbiting scroll body on a projection surface comprises an orbiting scroll inner molded line and an orbiting scroll outer molded line, when the free tail end of the orbiting scroll inner molded line is in contact with the fixed scroll outer molded line, the orbiting scroll inner molded line and the fixed scroll outer molded line are provided with a plurality of contact points in the line direction from the free tail end to a molded line starting end, and the projection of the communication hole on the projection surface is close to a second contact point.

4. A compressor as claimed in claim 3, wherein: when the inner molded line of the movable vortex is far away from the free end of the main discharge port and is in contact with the outer molded line of the fixed vortex, the projection of the communication hole on the projection surface is covered by the projection of the movable vortex body on the projection surface;

compared with the fixed vortex outer molded line, the projection of the communication hole on the projection surface is close to the fixed vortex inner molded line;

the fixed end plate is provided with a main discharge port, and the communication hole is spaced from the main discharge port; the molded line start end is closer to the main discharge port than the free end, and the main discharge port penetrates through the fixed end plate along the thickness direction of the fixed end plate;

the compressor comprises a main exhaust valve, the main exhaust valve is arranged on the fixed end plate, the main exhaust valve is at least partially positioned in an exhaust cavity, and the valve element can cover the main exhaust port; the valve member is at least partially of unitary construction with the main exhaust valve.

5. The compressor as set forth in claim 4, wherein: the fixed end plate is also provided with an auxiliary exhaust port, the auxiliary exhaust port is positioned between the main exhaust port and the communication hole, and the auxiliary exhaust port penetrates through the fixed end plate along the thickness direction of the fixed end plate;

The center of the auxiliary discharge port on the projection surface and the center of the communication hole on the projection surface are positioned on the same straight line;

the compressor comprises an auxiliary exhaust valve, the auxiliary exhaust valve is arranged on the fixed end plate, the auxiliary exhaust valve is at least partially positioned in an exhaust cavity, and the auxiliary exhaust valve can cover the auxiliary exhaust port; the auxiliary exhaust valve and the main exhaust valve are at least partially of an integrated structure.

6. The compressor as set forth in claim 2, wherein: the compressor comprises a cover body, the enthalpy increasing channel comprises a cover body channel, the cover body channel is located the cover body, the enthalpy increasing channel further comprises a connecting cavity, the connecting cavity is located between the cover body and the fixed vortex plate, the cover body channel and the fixed vortex plate channel are communicated with the connecting cavity, the compressor is provided with an enthalpy increasing channel inlet, and the cover body channel is communicated with the enthalpy increasing channel inlet.

7. The compressor as set forth in claim 6, wherein: the enthalpy-increasing channel inlet is positioned on the top wall of the cover body, and the connecting cavity is positioned between the end surface of the fixed end plate, which is far away from the compression cavity, and the cover body; the fixed scroll channel comprises a first channel section, wherein the first channel section is at least partially arranged along the direction perpendicular to the thickness of the fixed end plate, at least one end of the first channel section extends out of the peripheral side wall of the fixed end plate, the compressor comprises a sealing head, and one end, close to the peripheral side wall of the fixed end plate, of the first channel section is provided with the sealing head;

The fixed scroll channel comprises a second channel section, the second channel section is communicated with the first channel section and the connecting cavity, and the second channel section is arranged along the thickness direction of the fixed end plate.

8. The compressor of claim 7, wherein: the compressor comprises a one-way valve, wherein the one-way valve is at least partially positioned in the enthalpy-increasing channel, and the one-way valve can conduct the direction of the enthalpy-increasing channel from the enthalpy-increasing channel inlet to the communication hole;

the check valve is arranged in the connecting cavity and comprises a valve plate, a limiter and a fastener, wherein the valve plate and the limiter are connected with the cover body through the fastener, the valve plate is arranged between the surface of the outlet of the cover body channel and the limiter, and a lift gap is arranged between the surface of the limiter and the surface of the outlet of the cover body channel.

9. The compressor as set forth in claim 6, wherein: the enthalpy-increasing channel inlet is positioned on the peripheral side wall of the cover body, and the connecting cavity is positioned between the peripheral side wall of the fixed end plate and the cover body;

the first channel section comprises a first flow channel and a second flow channel, the first flow channel is communicated with the second flow channel and the communication hole, the second flow channel is communicated with the first flow channel and the connecting cavity, the cross-sectional area of the first flow channel is smaller than that of the second flow channel, and the cross-sectional area is defined as the area obtained by cutting off the flow channels of the first flow channel from a plane perpendicular to the central line direction of the flow channels of the second flow channel.

10. The compressor as set forth in claim 6, wherein: the compressor comprises a sealing element, wherein the sealing element is positioned between the cover body and the fixed scroll, and the sealing element is arranged between the connecting cavity and the exhaust cavity;

the compressor is provided with a suction cavity, the suction cavity is at least partially positioned between the cover body and the fixed scroll, and the sealing element is arranged between the suction cavity and the connecting cavity.