KR101750683B1

KR101750683B1 - Compressor

Info

Publication number: KR101750683B1
Application number: KR1020150137268A
Authority: KR
Inventors: 츠바사 미츠이
Original assignee: 가부시키가이샤 도요다 지도숏키
Priority date: 2014-09-30
Filing date: 2015-09-30
Publication date: 2017-06-26
Also published as: CN105464993A; KR20160038841A; CN105464993B; JP2016070185A; JP6036781B2

Abstract

The compressor includes a cylindrical shell having a peripheral wall having an inner peripheral surface. The peripheral wall has a suction port for suction of the refrigerant gas. The check valve is disposed in the inner radial direction of the peripheral wall to prevent the refrigerant gas from flowing out of the compressor through the suction port. A part of the inner circumferential surface of the peripheral wall around the suction port is formed as an arc-shaped surface. The check valve includes a valve body movable so as to approach and away from the inner circumferential surface of the shell. The valve body includes an opposed surface facing the suction port. The opposite surface has a seal portion formed by a surface of arc-like shape. The seal portion can contact a part of the inner circumferential surface of the shell. The seal portion formed by the arc-shaped surface is formed along the inner circumferential surface formed by the arc-shaped surface, thereby preventing the refrigerant gas from flowing out of the compressor through the suction port when the check valve is closed.

Description

COMPRESSOR

The present invention relates to a compressor having a check valve for preventing a refrigerant gas from flowing out through a suction port of a compressor.

Patent Document 1 discloses a vane type compressor. The vane type compressor includes a housing having a cylinder block therein. The rotating shaft is rotatably supported in the housing and extends through the cylinder block. The rotor is fixedly mounted on the rotary shaft so as to rotate together with the rotary shaft in the cylinder block. The rotor has a plurality of slots therein, generally radially extending and open at the outer peripheral surface of the rotor. Each slot accommodates a vane slidably therein. In the cylinder block, a plurality of compression chambers are formed by the outer peripheral surface of the rotor, the inner peripheral surface of the cylinder block, the side plate, and the vane.

The housing has therein a suction chamber communicable with the compression chamber. The housing includes a shell having a cylindrical shape. The shell has a suction port penetrating the peripheral wall and communicating with the suction chamber. A check valve is disposed in the suction port. The check valve is opened during the compression operation of the compressor. When the check valve is opened, the refrigerant gas flowing through the suction port flows into the compression chamber through the suction chamber. When the vane type compressor stops the compression operation, the check valve is closed. While the vane-type compressor is at rest, the closing of the check valve prevents the refrigerant gas from flowing out of the compression chamber to the outside of the vane-type compressor (or into the evaporator) through the suction chamber and the suction port.

The shell of the housing includes a joint portion extending outwardly from the suction port and connected to the suction pipe. In the compressor in which the check valve is disposed in the suction port, a space in the suction port is required for installation of the check valve. The provision of such a space causes the joint portion to protrude out of the outline of the shell, and the protruding length of the joint portion can be increased, resulting in a larger size of the vane-type compressor.

As a countermeasure to such a problem, it may be considered to arrange the check valve in the inner radial direction of the shell so that the protrusion of the joint portion is limited from the outline of the shell. In this case, the seal portion of the check valve is set to contact the peripheral surface of the shell around the suction port. Generally, the seal portion of the check valve is formed flat. In order to ensure good sealing of the check valve, a part of the inner circumferential surface of the shell to which the seal part is in contact needs to be worked flat. This complicates the manufacture of the shell.

Japanese Laid-Open Patent Publication No. 9-250472

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a compressor capable of ensuring an excellent sealing performance of a seal portion of a check valve without complicating the manufacture of a shell of the compressor.

According to one aspect of the present invention, there is provided a compressor including a cylindrical shell having a peripheral wall having an inner peripheral surface. The peripheral wall has a suction port for suction of the refrigerant gas. The check valve is disposed in the inner radial direction of the peripheral wall to prevent the refrigerant gas from flowing out of the compressor through the suction port. A part of the inner circumferential surface of the peripheral wall around the suction port is formed as an arc-shaped surface. The check valve includes a valve body movable so as to approach and away from the inner circumferential surface of the shell. The valve body includes an opposed surface facing the suction port. The opposite surface has a seal portion formed by a surface of arc-like shape. The seal portion can contact a part of the inner circumferential surface of the shell. The seal portion formed by the arc-shaped surface is formed along the inner circumferential surface formed by the arc-shaped surface, thereby preventing the refrigerant gas from flowing out of the compressor through the suction port when the check valve is closed.

Other aspects and advantages of the present invention will become apparent from the following description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS The invention, together with objects and advantages thereof, may best be understood by reference to the following description of the preferred embodiments together with the accompanying drawings.
1 is a longitudinal sectional view of a vane type compressor according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of a vane-type compressor taken along line 1-1 of Figure 1;
3 is a cross-sectional view of a vane-type compressor taken along line 2-2 of Fig.
4 is a perspective view of a check valve of the vane type compressor of Fig. 1;
5 is an enlarged cross-sectional view of the check valve of FIG. 4 and its periphery.
FIG. 6 is an exemplary sectional view showing a state in which the check valve of FIG. 4 is opened.
FIG. 7 is an enlarged cross-sectional view of a check valve and its vicinity of a vane type compressor according to another embodiment of the present invention.
8 is an enlarged cross-sectional view showing a seal member and its periphery of a vane type compressor according to another embodiment of the present invention.
FIG. 9 is an enlarged cross-sectional view of a check valve and its vicinity of a vane type compressor according to another embodiment of the present invention.

An embodiment of the present invention will be described with reference to Figs. 1 to 6. Fig. The vane type compressor according to the present invention is suitable for use in a vehicle air conditioner.

Referring to FIG. 1, a planetary compressor, generally designated 10, includes a housing 11. The housing (11) includes a rear housing (12) and a front housing (13) which are cylindrical shells. The rear housing 12 has a peripheral wall 12A. The front housing 13 is connected to the front end surface (i.e., one end surface) of the rear housing 12. [ In the present embodiment, the front housing 13 includes a cylindrical cylinder block 14. The cylinder block 14 is integrally formed with the front housing 13 and disposed in the rear housing 12. [

A side plate 15 is disposed on the rear housing 12 and a front end of the side plate 15 is joined to a rear end surface of the cylinder block 14. [ The rotary shaft 16 extends through the cylinder block 14 and is rotatably supported by the front housing 13 and the side plate 15. [ A lip type sealing device 17A is interposed between the front housing 13 and the rotary shaft 16. The sealing device 17A seals the rotating shaft 16 and prevents the refrigerant gas from leaking along the peripheral surface of the rotating shaft 16. [ A cylindrical rotor 18 is fixedly mounted on the rotating shaft 16 so as to rotate together with the rotating shaft 16. The rotor 18 is disposed on the cylinder block 14 such that its front end faces the end surface of the front housing 13 and its rear end faces the side plate 15. [

As shown in Figs. 2 and 3, the inner circumferential surface of the cylinder block 14 is formed in an elliptical shape. The rotor 18 is provided with a plurality of slots 18A that extend in a generally radial direction and are open at the outer circumferential surface of the rotor 18. [ In each slot 18A, a vane 19 is slidably received and supplied with lubricating oil.

When the rotary shaft 16 and the rotor 18 rotate together and the outer ends of the vane 19 come into contact with the inner peripheral surface of the cylinder block 14 while the vane type compressor 10 is operating, The inner wall of the cylinder block 14, the vane 19, the front housing 13, and the side plate 15 form a plurality of compression chambers 21 in cooperation with each other. In the vane type compressor 10, the volume of the compression chamber 21 is enlarged in the suction stroke, and the volume of the compression chamber 21 is reduced in the compression stroke.

As shown in Fig. 1, the rear housing 12 has a suction port 22 passing through the peripheral wall 12A. The rear housing 12 has a joint portion 24 extending from the suction port 22 to the outside of the housing 11. The joint portion 24 is connected to a suction pipe 25 extending from the outside of the vane type compressor (i.e., from the evaporator in the external refrigerant circuit).

On the outer circumference of the cylinder block 14, a recess 14A extending over the entire circumference of the cylinder block 14 is formed. The concave portion 14A forms a suction chamber 20 communicating with the suction port 22. The cylinder block 14 is a partitioning member of the present invention which cooperates with the inner circumferential surface of the rear housing 12 to form the suction chamber 20. [

2, the suction chamber 20 is formed between the cylinder block 14 and the rear housing 12 and extends in the circumferential direction of the rotary shaft 16. As shown in Fig. A part of the inner circumferential surface of the circumferential wall 12A of the rear housing 12 surrounding the opening of the suction port 22 is curved or formed into the same arc-shaped surface as the other inner circumferential surface of the circumferential wall 12A. The suction chamber 20 and the suction port 22 are arranged overlapping with the compression chamber 21 in the radial direction of the rotary shaft 16. A pair of suction ports 23 are formed in the cylinder block 14 and a pair of suction ports 23 are communicable with the suction chamber 20. [ In the suction stroke, the suction chamber (20) communicates with the compression chamber (21) through the suction port (23).

3, a pair of recesses 14B is provided on the outer circumference of the cylinder block 14 at a position on the opposite side of the cylinder block 14 with respect to the rotary shaft 16. [ Each recess 14B has a surface 141B extending radially inward from the outer periphery of the cylinder block 14 and a valve mounting surface 142B extending from the surface 141B to the outer periphery of the cylinder block 14 . The surface 141B and the valve mounting surface 142B of the concave portion 14B and the inner circumferential surface of the rear housing 12 define a pair of discharge chambers 30. [ That is, each of the discharge chambers 30 is formed between the cylinder block 14 and the rear housing 12 in the radial direction of the rotary shaft 16.

The cylinder block 14 is provided with a discharge port 31 having an opening in each valve mounting surface 142B. In the compression stroke, the discharge chamber (30) is communicable with the compression chamber (21) through the discharge port (31). Each discharge port 31 is opened and closed by a discharge valve 32 mounted on the valve mounting surface 142B. The refrigerant gas compressed in the compression chamber 21 is pushed out of the discharge valve 32 and discharged to the discharge chamber 30 through the discharge port 31.

As shown in Fig. 1, the rear housing 12 has a discharge port 34 passing through the peripheral wall 12A. The rear housing 12 has a joint portion 38 extending from the discharge port 34 to the outside of the housing 11. The joint portion 38 is connected to a discharge pipe 39 extending to the outside of the vane type compressor (i.e., to a condenser in an external refrigerant circuit).

A discharge pressure region (35) is formed in the rear housing (12) at the rear side of the side plate (15). In the discharge pressure region 35, an oil separator 36 for separating lubricant oil from the refrigerant gas is disposed. The oil separator 36 includes a bottomed cylindrical case 36A having an opening on its upper side. A cylindrical oil separation cylinder 36B is fixed to the opening of the case 36A. An oil passage 36C communicating with the inside of the case 36A and the bottom of the discharge pressure region 35 is formed through the bottom of the case 36A. The side plate 15 and the case 36A are formed with a communication passage 37 for providing fluid communication between the discharge chamber 30 and the inside of the case 36A. The side plate 15 is provided with an oil supply passage 15D for guiding the lubricating oil stored in the bottom of the discharge pressure region 35 to the slot 18A. A check valve (40) is disposed in the suction chamber (20).

4 and 5, the check valve 40 includes a valve body 41 which is movable so as to approach and away from the inner circumferential surface of the rear housing 12, And a guide member 43 for guiding the movement of the valve body 41 toward and away from the inner circumferential surface of the rear housing 12. As shown in Fig. The spring 42 corresponds to an urging member of the present invention. The valve body 41 and the guide member 43 are made of resin.

The valve body 41 has a plate shape elongated when seen in plan view. The valve body 41 has an opposed surface 41A facing the suction port 22. [ The opposite surface 41A extends along the arc-shaped surface of the rear housing 12. [ The seal portion 41S formed to protrude from the opposed surface 41A extends along the entire circumference of the opposed surface 41A. The seal portion 41S is formed as a arc-shaped surface. In the present embodiment, the seal portion 41S is integrally formed with the valve body 41. [ The seal portion 41S extends along the inner peripheral surface of the rear housing 12. A portion or an area around the suction port 22 on the inner peripheral surface of the rear housing 12 functions as a seat 12E. The seal portion 41S is capable of abutting against the sheet 12E.

The valve element 41 has a cylindrical portion 41C which protrudes inward linearly from the inner surface 41B of the valve element 41 opposite to the opposing surface 41A. The cylindrical portion 41C is formed in the central portion of the inner surface 41B in the circumferential direction of the rear housing 12. [ The valve body 41 has a pair of engaging plates 41D extending downward linearly from opposite ends of the valve body 41 which is the short side of the elongated plate-like valve body 41. The tip end of each engaging plate 41D is formed in a hook shape extending from the short side of the engaging plate 41D to the outside of the edge of the valve body 41. [

The guide member 43 includes a base 43A having an elongated plate shape as seen in plan view. The base portion 43A has an end face 43B facing the valve body 41. As shown in Fig. The guide member 43 further includes a cylindrical guide portion 44 which is arranged at a central portion of the base portion 43A and extends linearly upward from the base portion 43A toward the inner surface 41B of the valve body 41. [ The upper portion of the cylindrical guide portion 44 is inserted into the cylindrical portion 41C of the valve body 41. [ That is, the cylindrical guide portion 44 is disposed at the center portion of the valve body 41 in the circumferential direction of the rear housing 12.

The cylindrical portion 41C of the valve body 41 is guided along the outer peripheral surface of the cylindrical guide portion 44. [ Therefore, the valve body 41 moves while being guided so as to approach and separate from the inner circumferential surface of the rear housing 12.

The opposite end portions on the side of the short side of the elongated plate-shaped base portion 43A are located outside the opposite end portions on the side of the short side of the valve body 41. [ The base 43A has a pair of catches 43D extending upward from the opposite end of the end face 43B of the base 43A perpendicular to the end face 43B of the base 43A. The tip end of the latch 43D is formed in a hook shape protruding inward along the longitudinal direction to engage with the hook of the engaging plate 41D of the valve body 41. [ The engagement of the engagement plate 41D and the hook of the latch 43D prevents the valve body 41 from being detached from the guide member 43. [ That is, the engaging plate 41D and the latch 43D correspond to the "mechanism for preventing the valve body from being detached from the guide member" of the present invention.

Two springs 42 are disposed between the valve body 41 and the guide member 43 and a cylindrical portion 41C and a guide portion 44 are interposed between the two springs 42. [ That is, the spring 42 is disposed on the opposite side with the central portion of the valve body 41 interposed therebetween in the circumferential direction of the rear housing 12.

A concave portion 14C is formed on the outer circumferential surface of the cylinder block 14 to accommodate the base portion 43A of the guide member 43. [ The base member 43A of the guide member 43 is engaged with or fitted to the recess 14C so that the guide member 43 can be supported by the cylinder block 14 and accurately positioned in the suction chamber 20 Can be determined.

In assembling the check valve 40 into the suction chamber 20, the base portion 43A of the guide member 43 is placed in the recessed portion 14C. The cylinder block 14 is mounted in the rear housing 12 in a state in which the valve body 41 is pressed against the guide member 43 against the urging force of the spring 42. [ The pressing force of the spring 42 presses the valve body 41 toward the inner peripheral surface of the rear housing 12 by the cylinder block 14 mounted in the rear housing 12, Is disposed in the suction chamber (20) between the housing (12) and the cylinder block (14).

Next, the operation of the vane type compressor 10 according to the present embodiment will be described. Referring to Figures 1, 2, 3 and 6, while the vane-type compressor 10 is operating, when the rotor 18 with the vane 19 is driven to rotate by the rotary shaft 16, The gas flows from the evaporator (not shown) through the suction pipe 25 into the suction port 22. The valve body 41 is moved away from the inner circumferential surface of the rear housing 12 against the urging force of the spring 42 so that the suction pressure of the refrigerant gas acts on the opposed surface 41A of the valve body 41, And the check valve 40 is opened so that the refrigerant gas flows into the suction chamber 20 through the suction port 22. The refrigerant gas introduced into the suction chamber 20 flows into the compression chamber 21 through the suction port 23 in the suction stroke. The refrigerant gas in each compression chamber 21 is compressed by the volume reduction of the compression chamber 21 in the compression stroke and the compressed refrigerant gas is discharged to the discharge chamber 30 through the discharge port 31.

The compressed refrigerant gas in the discharge chamber 30 flows into the case 36A through the communication passage 37 where the refrigerant gas hits the outer circumferential surface of the oil separation cylinder 36B and circulates around the oil separation cylinder 36B And is guided toward the lower portion of the case 36A. Then, the lubricating oil contained in the refrigerant gas is separated from the refrigerant gas by centrifugal separation. The lubricating oil separated from the refrigerant gas flows to the bottom of the case 36A and then flows to the bottom of the discharge pressure region 35 through the oil passage 36A and is stored in the bottom portion of the discharge pressure region 35. [ A part of the lubricating oil stored at the bottom of the discharge pressure region 35 is guided to the slot 18A through the oil supply passage 15D and presses the vane 19 radially outward as a back pressure. The compression chamber 21 is defined by any two adjacent vanes 19 which are urged against the inner peripheral surface of the cylinder block 14 by back pressure. The sliding surfaces of the vane 19 and the slot 18A are lubricated by the lubricating oil guided into the slot 18A. The refrigerant gas from which the lubricating oil has been separated flows upward from the oil separation cylinder 36B and is discharged to the condenser (not shown) through the discharge port 34 and the discharge pipe 39.

On the other hand, when the rotation of the rotary shaft 16 is stopped, the compression operation of the vane type compressor 10 is stopped. As a result, the valve body 41 is moved so as to be in contact with the inner peripheral surface of the rear housing 12 while being guided by the guide portion 44 by the urging force of the spring 42, as shown in Fig. At the same time, the seal portion 41S comes into contact with the sheet 12E. The seal portion 41S having an arc-shaped surface when viewed from the cross section of the compressor 10 is also formed along the inner circumferential surface of the rear housing 12 having an arc-shaped surface. As a result, even when the compressor 10 is in the stopped state, the refrigerant gas is sucked from the compression chamber 21 through the suction chamber 20 and the suction port 22 to the suction pipe 22. Therefore, the check valve 40 is placed in the closed position, (25).

The above-described embodiments of the present invention provide the following advantageous effects.

(1) The sealing portion 41S formed in the shape of an arc when viewed from the cross section of the compressor is formed along the arc-shaped surface of the inner circumferential surface of the rear housing 12, is arranged along the inner circumferential surface of the rear housing 12, Thereby preventing the refrigerant gas from flowing back while the valve 40 is closed. Therefore, as compared with the structure in which the seal portion is formed flat, the seal portion 41S can be more intimately contacted with the area of the inner circumferential surface of the rear housing 12 around the suction port 22. It is not necessary to form a part of the inner peripheral surface of the rear housing 12 in contact with the sealing portion 41S so that the sealing performance of the sealing portion 41S of the check valve 40 is ensured, Can be easily processed.

(2) The seal portion 41S protrudes outward from the opposed surface 41A and is formed so as to extend along the entire circumference of the opposed surface 41A of the valve body 41. Unevenness formed by machining such as a burr protruding from the edge of the suction port 22 toward the valve body 41 is formed around the suction port 22 in the vicinity of the inner peripheral surface of the rear housing 12, The sealing performance of the seal portion 41S is not affected by such unevenness.

(3) The guide portion 44 is arranged so as to correspond to the central portion of the valve body 41 in the circumferential direction of the rear housing 12. This structure is different from the structure in which the guide portion 44 is disposed at a position offset from the center portion of the valve body 41 in the circumferential direction of the rear housing 12, 44 can be made longer. Therefore, the valve body 41 can be moved stably, and the operation of the check valve 40 can be improved.

(4) The structure in which the guide member 43 is supported by the cylinder block 14 makes it possible to arrange the check valve 40 in the suction chamber 20, which is a space where the check valve 40 is present, The size of the vane-type compressor 10 can be reduced without providing additional space for the vane-type compressor 10.

(5) The engaging plate 41D of the valve body 41 and the latch 43D of the guide member 43 serve as a mechanism for preventing separation between the valve body 41 and the guide member 43. That is, when the check valve 40 is assembled with the cylinder block 14, the valve body 41 is prevented from being detached from the guide member 43 by the engagement of the engaging plate 41D and the latch 43D. Therefore, the installation workability of the check valve 40 can be improved.

(6) Two springs 42 are disposed on the opposite sides of the central portion of the valve body 41 in the circumferential direction of the rear housing 12, so as to press the valve body 41. The valve body 41 pressurized by the two springs 42 can be prevented from being displaced from the inclined position to the inner circumferential surface of the rear housing 12 As shown in Fig.

(7) The space for mounting the vane type compressor in the engine compartment of the vehicle is limited, and the extending direction of the joint portion 24 may be limited. However, according to the check valve 40 of the present embodiment, as long as the suction port 22 is in the region of the opposed surface 41A of the valve body 41 extending along the inner peripheral surface of the rear housing 12, 22 may be located at any position along the desired direction of the joint portion 24. [ Thus, the degree of design freedom for forming the joint portion 24 can be increased.

(8) The opposed surface 41A of the valve body 41 is formed as a curved or arcuate surface along the inner circumferential surface of the rear housing 12 as viewed from the cross section of the compressor 10. This structure allows the refrigerant gas flowing from the suction port 22 to the suction chamber 20 along the curved opposed surface 41A of the valve body 41 to flow in the circumferential direction when the check valve 40 is opened , Thereby helping to increase the suction efficiency of the compressor (10).

(9) The refrigerant gas flowing from the joint portion 24 can be obliquely struck against the opposed surface 41A of the valve body 41. [ Since the seal portion 41S having the arc-shaped surface is disposed along the inner circumferential surface of the rear housing 12 having the arc-shaped surface to be complemented, the seal portion 41S, which permits stable operation of the valve body 41, The permissible alignment error range between the rear housing 12 and the rear housing 12 can be set to be larger.

The present invention can be variously practiced as exemplified below within the scope of the present invention. A single spring 42 may be disposed inside the guide portion 44 as shown in Fig. Specifically, the spring 42 may be disposed at the center portion of the valve body 41 in the circumferential direction of the rear housing 12. This structure is advantageous in that the valve body 41 is arranged in the peripheral portion of the rear housing 12 in the circumferential direction of the rear housing 12 as compared with a structure in which the spring 42 is disposed at the end portion in the valve body 41 in the circumferential direction of the rear housing 12. [ Direction to be made smaller. As a result, the size of the check valve 40 can be made smaller.

As shown in Fig. 8, the seal portion 41S and the valve body 41 may be formed separately. Further, the seal portion 41S may be made of an elastic material such as rubber. The elastic sealing portion 41S can be improved in sealing performance as compared with the sealing portion 41S made of resin. The structure in which the seal portion 41S and the valve body 41 are formed separately is different from the structure in which the seal portion 41S and the valve body 41 are integrally formed so that the valve body 41 is more easily manufactured I will.

9, the guide member 43 may be formed to have a contact portion 43E capable of coming into contact with the inner circumferential surface of the rear housing 12. As shown in Fig. In the structure shown in Fig. 9, the contact portion 43E is formed to have a long, linear plate shape and is formed at the upper end of the latch 43D. The upper surface (top) of the contact portion 43E is contactable with the inner peripheral surface of the rear housing 12. This structure ensures that the guide member 43 is stably positioned between the inner circumferential surface of the rear housing 12 and the cylinder block 14.

According to the present invention, the radius of curvature of the arc-shaped surface of the seal portion 41S may be the same as or different from the radius of curvature of the inner circumferential surface of the rear housing 12. The opposing face 41A may be formed flat.

According to the present invention, the guide portion 44 may be disposed at a position spaced apart from the central portion of the valve body 41 in the circumferential direction of the rear housing 12. The seal portion 41S does not necessarily have to be formed so as to protrude from the opposed surface 41A. For example, the opposing face 41A may be provided to act as the seal portion 41S.

According to the present invention, the engaging plate 41D and the latch 43D may be omitted. The guide member 43 may also be omitted. For example, the guide member may be provided on the bottom surface of the concave portion 14A of the cylinder block 14. [ Further, the cylinder block 14 may be formed to have a lock portion that locks the upper surface of the engagement plate 41D serving as a part of the departure-avoidance mechanism.

According to the present invention, the suction chamber 20 and the suction port 22 do not need to be arranged so as to overlap with the compression chamber 21 in the radial direction of the rotary shaft 16 of the compressor 10. For example, the suction chamber 20 and the suction port 22 may be formed at the front position of the cylinder block 14. [ For example, the suction chamber 20, which can communicate with the suction port 22, can be partitioned by the inner surfaces of the front housing 13 and the rear housing 12. In this case, the front housing 13 corresponds to the partition member that defines the suction chamber 20 together with the rear housing 12. [

According to the present invention, the cylinder block 14 and the front housing 13 may be formed separately. The vane-type compressor 10 may also be used in an air conditioner other than the vehicle air conditioner.

According to the present invention, the compressor may be other types such as a scroll-type, a swash-plate type, and a roots-type in addition to the vane type.

Claims

A circumferential wall having a peripheral wall having an inner circumferential surface, the circumferential wall having a suction port for suction of the refrigerant gas, wherein a part of the inner circumferential surface of the circumferential wall around the suction port has an arc- ;
And a check valve disposed in an inner radial direction of the peripheral wall to prevent refrigerant gas from flowing out of the compressor through the suction port, wherein the check valve includes a valve body that is movable toward and away from the inner peripheral surface of the shell, wherein the valve body includes a valve body, the valve body includes an opposed surface facing the suction port, the opposed surface having a seal portion formed of an arc-shaped surface, And the seal portion is formed along the inner circumferential surface formed by the arc-shaped surface, thereby preventing the refrigerant gas from flowing out of the compressor through the suction port when the check valve is closed compressor.

The method according to claim 1,
And the seal portion is formed to protrude from the opposed surface over the entire circumference of the opposed surface.

The method according to claim 1,
And the check valve includes a guide member having a guide portion for guiding movement of the valve body, wherein the guide portion is provided on the valve body so as to be opposed to the inner peripheral surface of the shell, And is disposed at a position corresponding to a central portion of the valve body in the circumferential direction of the shell.

The method according to claim 1,
A partition member is disposed in the shell and defines a suction chamber communicating with the suction port together with the inner peripheral surface of the shell, and the check valve includes a guide member having a guide portion for guiding movement of the valve member, And the guide member is supported by the partition member.

5. The method of claim 4,
Wherein the guide member and the valve body have a mechanism for preventing the valve body from being detached from the guide member.

5. The method of claim 4,
Wherein the guide member is formed to have a contact portion capable of contacting the inner circumferential surface of the shell.

The method according to claim 1,
Wherein the check valve includes an urging member for urging the valve body toward the inner peripheral surface of the shell, and the urging member is disposed at a central portion of the valve body in the circumferential direction of the shell compressor.

The method according to claim 1,
The check valve includes a pair of pressing members for pressing the valve body toward the inner peripheral surface of the shell, and the pressing member is disposed on the opposite side of the central portion of the valve body in the circumferential direction of the shell Lt; / RTI >

The method according to claim 1,
Wherein the seal portion is made of an elastic material.

10. The method of claim 9,
Wherein the seal portion and the valve body are formed separately.