CN106662087B - Compressor - Google Patents

Abstract

A kind of compressor is provided, the drain passageway being connect with the space in the downstream side of check valve can be readily formed if even if the compressor is there are the limitation of suction passage.Compressor (100) includes suction chamber (141),Cylinder bore (101a),Tap (103b),It is configured at the discharge room (142) of the radially inner side of suction chamber (141),Drain passageway (104d) and check valve (200),And compressed refrigerant is discharged from drain passageway (104d),The compressor includes zoning component (160),The zoning component is chimeric along the inner peripheral surface (104f) for the peripheral wall (104b) for forming discharge room (142),And discharge room (142) is divided into two in the short transverse of peripheral wall (104b),Zoning is the second space (142b) in the first space (142a) being connect with tap (103b) and the bottom wall (104a) towards discharge room (142),Drain passageway (104d) is connect with second space (142b),In the case of P1 < P2,Check valve (200) will make the closure of openings of interconnecting part that the first space is connected to second space.

Description

Compressor

Technical field

Make piston reciprocating movement with the compressor of the reciprocating motion type compressed to refrigerant the present invention relates to a kind of, especially It is related to a kind of compressor for the check valve for having and preventing refrigerant adverse current.

Background technology

As the compressor of reciprocating motion type used in existing air conditioning system for vehicle, there are following compressor, the pressures Contracting machine has：Suction chamber, the suction chamber are configured circlewise centered on the one end of drive shaft, and are flowed into for refrigerant；It is more A cylinder bore, these cylinder bores are arranged in a manner of surrounding drive shaft；And discharge room, discharge room configuration are inside in the diameter of suction chamber Side.

As this compressor, for example, as it is known that there is a kind of compressor described in Patent Document 1.In 1 institute of above patent document In the compressor of record, refrigerant is made to be flowed into suction chamber via suction passage, wherein the suction passage will be with external refrigeration The connectivity port (suction side connectivity port) of agent circuit (low pressure side loop) connection is connected to suction chamber.In addition, in the compression In machine, the piston reciprocating in cylinder bore is made to move, to press being drawn into the refrigerant in cylinder bore via inlet hole from suction chamber Contracting, and the compressed refrigerant is returned via tap, discharge room and drain passageway to the high-pressure side of external refrigerant circuit Road is discharged.

Here, due in this compressor, the high pressure side loop in external refrigerant circuit is in the outside of compressor case It is connected to the connectivity port (discharge side connectivity port) of the one end to form drain passageway, thus, for example, the work in compressor stops When only, there are the refrigerant of the high pressure in high pressure side loop via drain passageway to the case where room side adverse current is discharged.

Thus, for example, in compressor recorded in patent document 1, by using the discharge room of the bottom wall in discharge room The recess portion being connected to drain passageway, and the structure by check valve receiving in this recess are formed at radial central portion, to prevent Refrigerant is from drain passageway to the adverse current of discharge room.

Existing technical literature

Patent document

Patent document 1：Japanese Patent Laid-Open 2014-74365 bulletins

Invention content

The technical problems to be solved by the invention

However, in this compressor, due to be formed in the discharge side connectivity port on the outside of compressor case position and The direction of drain passageway is restricted because of the compressor of vehicle side installing space and layout etc., therefore, it is impossible in compressor side Freely determine the position of discharge side connectivity port and the direction of drain passageway.

But in the compressor recorded in patent document 1, due to check valve configuration with the outer diameter of check valve suitably It is formed in the recess portion of the small internal diameter at the discharge room radial direction central portion of the bottom wall of discharge room, drain passageway is in the small recess portion Bottom surface on the mode that is open be attached, therefore, the discharge side connectivity port being restricted by layout of vehicle side etc. The direction of position and drain passageway, can exist can not be readily formed drain passageway so that drain passageway becomes as complexity Situation.That is, in compressor recorded in patent document 1, because of the layout etc. of vehicle both sides, possibly can not be readily formed The drain passageway being connect with the space in the downstream side of check valve, so as to cause compressors such as the cylinder caps for being used to form drain passageway outside The manufacturing cost of shell increases.

Make currently invention addresses the above problem, its purpose is to provide a kind of compressors, even if the compressor is being arranged Go out side connectivity port position and drain passageway direction exist limitation in the case of, can also be readily formed under check valve Swim the drain passageway of the space connection of side.

Technical scheme applied to solve the technical problem

To achieve the goals above, compressor of the invention includes：Suction chamber, the suction chamber are with the one end of drive shaft Center configuration circlewise, and is flowed into for refrigerant；Multiple cylinder bores, multiple cylinder bores are arranged in a manner of surrounding the drive shaft Row；Tap, the tap are correspondingly arranged with each cylinder bore；Room is discharged, which configures the radial direction in the suction chamber Inside；Drain passageway, the drain passageway are connect with the discharge room；And check valve, the check valve prevent refrigerant from described Drain passageway adverse current, the compressor makes the piston reciprocating in the cylinder bore move by the rotation of the drive shaft, with right The refrigerant being drawn into the cylinder bore from the suction chamber is compressed, and by the compressed refrigerant via the row Portal and room is discharged and be discharged from the drain passageway, wherein the compressor includes zoning component, and the zoning component is along formation institute The inner peripheral surface for stating the peripheral wall of discharge room is chimeric, and the discharge room is divided into two in the short transverse of the peripheral wall, zoning For the first space for being connect with the tap and the second space of the bottom wall towards the discharge room, the drain passageway and institute Second space connection is stated, and the pressure hour of the second space described in the pressure ratio in first space, the check valve will pass through Wear the zoning component and the closure of openings of the interconnecting part that makes first space be connected to the second space.

Invention effect

Compressor according to the present invention, since the inner peripheral surface by making zoning component edge form the peripheral wall that room is discharged is fitted into, To which discharge room be divided into two in the short transverse of peripheral wall, zoning is the first space being connect with tap and towards the row Go out the second space of the bottom wall of room, therefore, the first space can be set as to substantive discharge room, and under the discharge room of the essence It swims side and configures the second space bigger than the diameter of the recess portion of existing compressor.

In addition, compressor according to the present invention, due to by drain passageway with it is described bigger than existing recess portion diameter by second Space connects, and check valve is arranged, which will pass through area in the pressure hour of the pressure ratio second space in the first space It draws component and the closure of openings for the interconnecting part that the first space is connected to the second space is made therefore to hold by the check valve Changing places prevents refrigerant from second space to the adverse current in the first space, in addition, can by drain passageway easily under check valve The second space in the space, i.e. major diameter of swimming side connects.

Thus, compressor according to the present invention, in existing compressor, even if in limitations such as layouts by vehicle side The position of discharge side connectivity port and the direction of drain passageway in, also can be easily in the case that drain passageway becomes complexity Form drain passageway.

In such manner, it is possible to a kind of compressor be provided, even if position or drain passageway of the compressor in discharge side connectivity port Direction exist limitation in the case of, can also be readily formed the drain passageway being connect with the space in the downstream side of check valve.

Description of the drawings

Fig. 1 is the sectional view of the compressor of first embodiment of the invention.

Fig. 2 is the figure of the cylinder cap of the above embodiment from the opening end surface side (valve plate side) of cylinder cap.

Fig. 3 is that the dump valve of the above embodiment forms the vertical view of body.

Fig. 4 is that the guard ring of the above embodiment forms the vertical view of body.

Fig. 5 is the partial sectional view for bleeding off pressure access for including the above embodiment.

Fig. 6 is the major part enlarged cross-sectional view for including zoning component and check valve of the compressor of the above embodiment.

Fig. 7 is the zoning component of the above embodiment and the sectional view of check valve.

Fig. 8 is the figure of the cylinder cap of the compressor of second embodiment of the invention from the opening end surface side of cylinder cap.

Fig. 9 is the major part enlarged cross-sectional view of the compressor of third embodiment of the invention.

Figure 10 is the major part enlarged cross-sectional view of the compressor of four embodiment of the invention.

Specific implementation mode

Hereinafter, with reference to the accompanying drawings, detailed description of embodiments of the present invention.

Fig. 1 be first embodiment of the invention compressor, i.e. ramp type variable displacement compressor (hereinafter referred to as " pressure Contracting machine ") 100 sectional view.Fig. 2 is the aftermentioned cylinder cap 104 of the compressor 100 from the opening end surface side of cylinder cap 104.

The compressor 100 is the compressor of no-clutch, connect, makes more with the external refrigerant circuit that the illustration is omitted A piston 136 is moved back and forth so that the refrigerant sucked from external refrigerant circuit is compressed and is discharged.In present embodiment In, compressor 100 is using compressor used in air conditioning system for vehicle.

As shown in Figure 1, compressor 100 includes：Cylinder body 101, the cylinder body 101 are formed with the cylinder bore for plunger 136 101a；Front casing 102, the front casing 102 are set to one end of cylinder body 101；And cylinder cap 104, the cylinder cap 104 is across valve plate 103 Deng the other end set on cylinder body 101.

By cylinder body 101 and front casing 102, the crank chamber at 136 back side of piston is formed.To cross in the crank chamber 140 Mode be equipped with drive shaft 110, which is supported to and can be rotated by aftermentioned each bearing (131~134).Cylinder bore 101a is arranged in cylinder body 101 in a manner of surrounding drive shaft 110 multiple.

It is configured with inclined plate 111 around the axial middle section of drive shaft 110.It is formed in the central portion of inclined plate 111 Through-hole 111b.Drive shaft 110 inserts through-hole 111b.Inclined plate 111 is connect via link mechanism 120 with rotor 112, and in crank chamber It is rotated together with drive shaft 110 and rotor 112 in 140, wherein the rotor 112 is fixed on drive shaft 110 and and drive shaft 110 rotate integrally.Specifically, inclined plate 111 via link mechanism 120 the central axis O relative to drive shaft 110 can be made The variable mode in angle of inclination connect with drive shaft 110 and rotor 112.

Link mechanism 120 includes：First arm 112a, first arm 112a are provided projectingly on rotor 112；Second arm 111a, Second arm 111a is provided projectingly on inclined plate 111；And link arm 121, one end of the link arm 121 pass through the first connecting pin 122 are connect in a manner of it can rotate with the first arm 112a, the other end the second connecting pin 123 in a manner of it can rotate with second Arm 111a connections.

The through-hole 111b of inclined plate 111 is formed to incline in the range of allowable angle of inclination to minimal tilt angle for inclined plate 111 The shape tiltedly moved.Be formed with minimal tilt angle limiting unit in through-hole 111b, the minimal tilt angle limiting unit by with drive shaft 110 abut limited to the inclination angular displacement (banking motion) in the direction for making inclination angle reduce inclined plate 111.For example, In the case that the inclination angle of inclined plate 111 of the inclined plate 111 when orthogonal with drive shaft 110 is set as 0 degree, above-mentioned minimal tilt angle limitation Portion be formed as allow inclined plate 111 inclination angle become substantially 0 degree until inclination angular displacement (banking motion).In addition, by oblique Plate 111 is abutted with rotor 112, come limit inclined plate 111 to the inclination angular displacement (banking motion) for making the increased direction in inclination angle. Thus, the inclination angle of inclined plate 111 is allowable angle of inclination when inclined plate 111 is abutted with rotor 112.

Inclination angle is installed in a manner of clipping inclined plate 111 in drive shaft 110 and reduces spring 114 and inclination angle increase bullet Spring 115, wherein the inclination angle reduces spring 114 along making the direction that inclination angle reduces exert a force inclined plate 111, the inclination angle Increase spring 115 along make the increased direction in inclination angle to inclined plate 111 exert a force.It is mounted on specifically, inclination angle reduces spring 114 Between inclined plate 111 and rotor 112, inclination angle increases spring 115 and is mounted on inclined plate 111 and is set to the spring-loaded of drive shaft 110 Between component 116.

Here, being set to when the inclination angle of inclined plate 111 is minimal tilt angle, the force that inclination angle increases spring 115 is big Reduce the force of spring 114 in inclination angle.Thus, when drive shaft 110 does not rotate, i.e., when compressor 100 stops, inclined plate 111 are located at inclination angle (the > minimums for the force balance for making the force of inclination angle reduction spring 114 increase spring 115 with inclination angle Inclination angle).

One end of drive shaft 110 runs through the protruding portion 102a of front casing 102 and extends to the outside of front casing 102, and with Power transmission connection (not shown) with no-clutch mechanism.In addition, interleaving in drive shaft 110 and protruding portion 102a Enter to have shaft sealer 130, the inside of crank chamber 140 and exterior space are blocked.

Drive shaft 110 and the connector of rotor 112 are supported by journal bearing 131,132 in radial directions, in thrust side It is supported upwards by thrust bearing 133, thrust plate 134.In addition, end by 134 side of thrust plate and the thrust plate of drive shaft 110 Gap between 134 is adjusted by adjusting screw 135.In addition, drive shaft 110 is passed because of the power from external drive source (not shown) Be handed to the power transmission, and with the power transmission synchronous rotary.

Piston 136 is configured in cylinder bore 101a, in the inside towards 140 side of crank chamber end outstanding of piston 136 In space, the peripheral part of inclined plate 111 is contained, inclined plate 111 is interlocked via a pair of of crawler shoe 137 with piston 136.Pass through the crawler shoe 137, the rotary motion of inclined plate 111 is converted to the reciprocating motion of piston 136, to keep piston 136 reciprocal in cylinder bore 101a It is mobile.

In the present embodiment, following switching mechanism with this configuration, which includes inclined plate 111, this is tiltedly Plate 111 rotates in crank chamber 140 with drive shaft 110 together, and the inclination angle of the central axis O relative to the drive shaft 110 Variable, the rotary motion of inclined plate 111 is converted to the reciprocating motion of piston 136 by the switching mechanism.In addition, in present embodiment In, the switching mechanism constituted in a manner of including inclined plate 111, rotor 112, link mechanism 120 and crawler shoe 137 is equivalent to the present invention " switching mechanism ".

104 zoning of cylinder cap is formed with suction chamber 141 and discharge room 142, wherein the suction chamber 141 is with drive shaft 110 It configures centered on one end circlewise and is flowed into for refrigerant, radially inner side of the discharge room 142 configuration in suction chamber 141.

For example, as depicted in figs. 1 and 2, diameter of the suction chamber 141 in peripheral wall 104b in a manner of surrounding and room 142 is discharged is outside Side is formed as cyclic annular, wherein the peripheral wall 104b is provided projectingly from the bottom wall 104a of cylinder cap 104, and annularly towards 101 side of cylinder body Extend.

Discharge room 142 configures the radial central portion in such as cylinder cap 104, and by bottom wall 104a and peripheral wall 104b zoning shapes At.

Peripheral wall 104b is for example formed as cyclic annular centered on the central axis O of drive shaft 110, specifically, such as Fig. 2 institutes Show, position in the circumferential direction of peripheral wall 104b, corresponding with aftermentioned each tap 103b is made radially to swell in outside, and it is whole Be formed as cyclic annular.It is formed in addition, the upper end (end of 101 side of cylinder body) of the ridge in peripheral wall 104b is stepped Relief portion, so as to accommodate aftermentioned guard ring 150a.Short transverse (in other words, the extension side of central axis O of peripheral wall 104b To) the inner peripheral surface 104f at intermediate position is formed to have the internal diameter more slightly larger than the outer diameter of aftermentioned zoning component 160, and become area Draw the fitting portion of component 160.The inner peripheral surface 104f ' of the base end part of peripheral wall 104b is formed to have the outer diameter than zoning component 160 Slightly smaller internal diameter.By as the inner peripheral surface 104f ' connections of the inner peripheral surface 104f of above-mentioned fitting portion and base end part, and with bottom wall 104a Parallel face becomes aftermentioned limitation face 104h (with reference to aftermentioned Fig. 6).

Suction chamber 141 via inlet hole 103a (referring to Fig.1) and as inlet valve needle spring plate valve (not shown) and and cylinder Thorax 101a connections, wherein above-mentioned inlet hole 103a and each cylinder bore 101a is accordingly formed in valve plate 103, above-mentioned needle spring plate valve shape Body (not shown) is formed at the inlet valve in sheet.The configuration of the valve plate 103 is in the cylinder body 101 for being used to form cylinder bore 101a and week Between the end face (the opening end face of cylinder cap 104) of wall 104b.Inlet valve forms body configuration and leans on 101 side of cylinder body in valve plate 103. In addition, for example, when the pressure in the pressure ratio cylinder bore 101a in suction chamber 141 is big, the needle spring plate valve as inlet valve can be sent out The shape that changes and make inlet hole 103a be open, when the pressure in suction chamber 141 be cylinder bore 101a in pressure below when, eliminate needle spring The deformation of plate valve and make inlet hole 103a close.

On the other hand, discharge room 142 via needle spring plate valve 138a (with reference to Fig. 3) and the tap 103b as dump valve and It is connected to cylinder bore 101a, wherein the dump valve that the needle spring plate valve 138a is formed in sheet forms body 138, the tap 103b and each cylinder bore 101a is accordingly formed in valve plate 103.Dump valve forms the configuration of body 138 and leans on cylinder cap 104 1 in valve plate 103 Side.In addition, for example when the pressure in pressure ratio discharge room 142 (specifically, aftermentioned first space 142a) in cylinder bore 101a When power is big, the needle spring plate valve 138a as tap can deform and tap 103b is made to be open, the pressure in cylinder bore 101a When power is the pressure being discharged in room 142 or less, eliminates the deformation of needle spring plate valve 138a and close tap 103b.

In addition, in the present embodiment, each tap 103b is assembled in by valve plate 103 between cylinder cap 104 and cylinder body 101 In the state of, the distance difference of the central axis O away from drive shaft 110 is equal, and is being driven in a manner of separating roughly equal interval It is arranged in the circumferential direction of moving axis 110.The ingate 161c of aftermentioned interconnecting part is formed as the central shaft for making hole center and drive shaft 110 Line O is consistent.Thus, in other words, the distance difference at hole centers of each tap 103b away from aftermentioned ingate 161c is equal, and with Separated mode arranges in the circumferential direction of ingate 161c.

As shown in figure 3, dump valve, which forms body 138, has multiple needle spring plate valve 138a and needle spring plate valve interconnecting piece 138b, and And it is formed in such a way that needle spring plate valve 138a radially extends along the radial direction of discharge room 142.

Needle spring plate valve 138a is arranged respectively at the tap shape with valve plate 103 for example in aftermentioned first space 142a At circumferentially apart multiple positions corresponding at position, in the first space 142a, and along the radial direction of the first space 142a Extend, corresponding tap 103b is opened or closed.Needle spring plate valve interconnecting piece 138b is for example each needle spring plate valve 138a's Radially inner side connects the base end part of each needle spring plate valve 138a.

The maximum opening of needle spring plate valve 138a as dump valve is limited by retainer plate 150, and (not shown) as suction The maximum opening for entering the needle spring plate valve of valve is limited by the recess portion for the end face for being formed in cylinder bore 101a.In addition, in present embodiment In, the retainer plate 150 is equivalent to " the guard ring formation body " of the present invention.

As shown in figure 4, retainer plate 150 is the component limited for the maximum opening to needle spring plate valve 138a, have Multiple guard ring 150a and guard ring interconnecting piece 150b, and in a manner of radial the radially extending of room 142 along discharge of guard ring 150a It is formed.In addition, the configuration of above-mentioned retainer plate 150 leans on 104 side of cylinder cap in dump valve formation body 138.

Each guard ring 150a is for example configured in a manner of corresponding with each allocation position of needle spring plate valve 138a respectively, and along One space 142a's radially extends, to limit the maximum opening of corresponding needle spring plate valve 138a.Guard ring interconnecting piece 150b for example connects the base end part of each guard ring 150a in the radially inner side of each guard ring 150a.

Fig. 1 is returned to, inlet valve forms body (not shown), valve plate 103, dump valve and forms body 138 (with reference to Fig. 3), retainer plate 150 are fastened by fastening member 151 by said sequence from 101 side of cylinder body and are integrated.Fastening member 151 for example by bolt, Nut and gasket are constituted.

In the present embodiment, compressor 100 is constituted through the above way utilize drive shaft in the compressor 100 110 rotation makes piston reciprocating move, to the system being drawn into from suction chamber 141 via inlet hole 103a etc. in cylinder bore 101a Cryogen is compressed, and by the compressed refrigerant via tap 103b, needle spring plate valve 138a and discharge room 142 from aftermentioned Drain passageway 104d to the high pressure side loop of external refrigerant circuit be discharged.

Here, front casing 102, central washer (not shown), cylinder body 101, cylinder washer (not shown), valve plate 103, Cover Gasket circle (not shown) and cylinder cap 104 pass sequentially through multiple fastened through bolt 105 and form compressor case.In addition, though Cover Gasket circle Configuration is between valve plate 103 and cylinder cap 104, but part corresponding with discharge room 142 and inlet hole 103a is formed as being open.Cause And room 142 is discharged towards valve plate 103.

As shown in Fig. 2, on cylinder cap 104, the suction passage 104c with suction side connectivity port 104c ', such as formed To be opened on suction chamber 141 through the periphery wall of cylinder cap 104.Above-mentioned suction side connectivity port 104c ' and the car air-conditioner system The low pressure side loop in the external refrigerant circuit of system connects.Thereby, refrigerant flows into suction chamber 141 from suction passage 104c.

In addition, on cylinder cap 104, the drain passageway 104d with discharge side connectivity port 104d ' is formed through cylinder cap 104 periphery wall and with discharge room 142 connect.The high-pressure side of above-mentioned discharge side connectivity port 104d ' and external refrigerant circuit Circuit connects.Thereby, refrigerant is discharged from drain passageway 104d to high pressure side loop.

In addition, will be carried out below about the connecting object of drain passageway 104d and the detailed content in extended direction Explanation.

Here, discharge room 142 is divided into two by zoning component 160 in the short transverse of peripheral wall 104b, and by area Divide the second space 142b of the first space 142a being connect with tap 103b and the bottom wall 104a towards discharge room 142 into.

Specifically, the first space 142a be by zoning component 160, the peripheral wall 104b of cylinder cap 104 and valve plate 103 surround and At space, body 138 and retainer plate 150 are formed to dump valve and accommodated.Second space 142b is by zoning component 160, cylinder Space made of the bottom wall 104a and peripheral wall 104b of lid 104 are surrounded.

The check valve 200 for preventing refrigerant from 104 adverse current of drain passageway is integrally formed on zoning component 160.

The check valve 200 is by according to the pressure difference between the first space 142a and second space 142b, will pass through zoning Component 160 prevents refrigerant to open or close the first space 142a with the opening of the second space 142b interconnecting parts being connected to From second space 142b to the first space 142a adverse currents, to prevent refrigerant from drain passageway 104d substantially to discharge room (the first space 142a) adverse current.In addition, about the structure of zoning component 160, the structure of check valve 200 and action and above-mentioned Interconnecting part will describe in detail below.

Control valve 300 is additionally provided on cylinder cap 104.

Control valve 300 is clipped on the pressure supply passageway for being connected to the first space 142a that room 142 is discharged with crank chamber 140 145, the aperture of pressure supply passageway 145 is adjusted, to the refrigerant gas from the first space 142a to crank chamber 140 Body (discharge gas) import volume is controlled.In addition, refrigerant gas in crank chamber 104 is via by crank chamber 140 and sucking The access 146 that bleeds off pressure that room 141 is connected to flows to suction chamber 141.It is equipped in bleeding off pressure access 146 on access 146 in described bleed off pressure The aperture that the flow of the fluid of circulation is limited.

Specifically, for example, such as Fig. 2 and shown in the major part enlarged cross-sectional view of the Section A-A including Fig. 2, i.e. Fig. 5, Access 146 is bled off pressure via the inserting hole for being inserted through bolt 105, crank chamber 140 is connected to suction chamber 141.For example, being formed Above-mentioned aperture is constituted in the slot 104e of the open end of cylinder cap 104.In addition, as shown in Fig. 2, pressure supply passageway 145 is via confession Another inserting hole inserted through bolt 105, the first space 142a is connected to crank chamber 140.

In the present embodiment, control valve 300 is formed through the above way, and the control valve 300 is to pressure supply passageway 145 Aperture be adjusted such that the pressure change of crank chamber 140, and the inclination angle of inclined plate 111 is changed according to the pressure change Become, is controlled with the stroke amount to piston 16.

More specifically, control valve 300 is when air-conditioning system works, under the working condition of compressor 100, based on outside Solenoidal turn on angle built in signal opposite direction is adjusted, and carries out variable control to discharge capacity so that via with sucking The pressure that the pressure importing access 147 that room 141 connects imported into the suction chamber 141 of the pressure-sensitive room of control valve 300 becomes specified value. In addition, when air-conditioning system stops, under the off working state of compressor 100, by blocking (disconnection) to solenoidal energization, Thus by 145 positive opening of pressure supply passageway, by the discharge volume controlled of variable displacement compressor 100 at minimum.

Then, with reference to Fig. 2, Fig. 6 and Fig. 7, the structure of zoning component 160 is described in detail.Fig. 6 be include Fig. 2 institutes The B-B direction shown regards the major part enlarged cross-sectional view of the zoning component 160 in section and the compressor 100 of check valve 200.Fig. 7 is The sectional view of zoning component 160 and check valve 200.

Zoning component 160 is the inner peripheral surface 104f at position among the short transverse of peripheral wall 104b for forming discharge room 142 It is chimeric, and discharge room 142 is divided into two in the short transverse of peripheral wall 104b in the manner previously described, it is and row with zoning Portal 103b connections the first space 142a and towards discharge room 142 bottom wall 104a second space 142b component.In addition, As long as the position among the short transverse of peripheral wall 104b between the upper end and base end part of position peripheral wall 104b.

Specifically, zoning component 160 includes：Disk-shaped zoning portion 161, height of the zoning portion 161 along peripheral wall 104 The inner peripheral surface 104f at position is chimeric among direction；Protrusion 162, the protrusion 162 depend on the first space 142a from zoning portion 161 The end face of side is prominent and extends to 103 side of valve plate, and above-mentioned zoning component 160 is formed such as the metal material by brass, aluminium.

Zoning portion 161 for example with can with inner peripheral surface 104f the chimeric and outer diameter cylinder more slightly smaller than the internal diameter of inner peripheral surface 104f Peripheral surface 161a.It is formed with endless groove on cylinder peripheral surface 161a.Configured with as flexible in the endless groove The O-ring 163 of containment member.O-ring 163 is clipped in it between inner peripheral surface 104f by zoning component 160, in a manner of it can assemble and disassemble Inner peripheral surface 104f along peripheral wall 104b is chimeric.In this way, zoning component 160 is configured to can be along the central axis O's of drive shaft 110 The mode of extending direction movement is chimeric with inner peripheral surface 104f.

Specifically, protrusion 162 is in the assembling chimeric with inner peripheral surface 104f of zoning portion 161, with can be adjacent to each other The mode that valve plate 103 is pressed between each guard ring 150a adjacent to each other between each needle spring plate valve 138a, in for example cylindric Ground is provided projectingly at circumferentially apart multiple positions in zoning portion 161.In addition, each protrusion 162 is with by each protrusion 162 The center of the set of protrusions of the composition mode roughly the same with the radial center in zoning portion 161 is provided projectingly.

In addition, forming restricted face 104h on peripheral wall 104b, limitation face 104h will be in the short transverse of peripheral wall 104b Between the inner peripheral surface 104f at position connect with the inner peripheral surface 104f ' at the base end part of peripheral wall 104b, and it is parallel with bottom wall 104a.In area Draw portion 161 it is chimeric along inner peripheral surface 104f when, above-mentioned limitation face 104h and the peripheral part of the second space side end face in zoning portion 161 are supported It connects, and zoning component 160 is limited to the movement of the sides bottom wall 104a.

When the peripheral part of the second space side end face in zoning portion 161 is abutted with limitation face 104h, the end face of protrusion 162 It is opposite in the mode with small gap between 162a and valve plate 103.It is supported by the end face 162a and valve plate 103 of protrusion 162 It connects, to be limited to the movement of 103 side of valve plate zoning component 160.

In this way, zoning component 160 by clip O-ring 163 and it is mobile in a manner of with discharge room 142 peripheral wall 104b (in detail It is inner peripheral surface 104f for thin) it is chimeric, and above-mentioned movement is limited by valve plate 103 and limitation face 104h, to prevent zoning Component 160 falls off.

In addition, zoning component 160 is by rotation limiting structure, to determine its circumferential position relative to cylinder cap 104.Example As shown in fig. 7, rotation limiting structure is made of protrusion 161b and recess portion 104g, wherein the protrusion 161b is in zoning portion 161 Second space side end face peripheral part, be provided projectingly to second space side at suitable position in circumferential direction, the recess portion The prominent position of 104g and raised part 161b correspondingly forms the limitation face 104h in cylinder cap 104.Zoning portion 161 is will be convex In the state that portion 161b is chimeric with recess portion 104g, it is fitted along inner peripheral surface 104f.Thereby, the circumferential rotation of zoning component 160 It is restricted.

As described above, by keeping zoning portion 161 chimeric along inner peripheral surface 104f, to make discharge room 142 peripheral wall 104b's It is divided into two in short transverse, and zoning is the first space 142a being connect with tap 103b and towards bottom wall 104a Two space 142b.In addition, the first space 142a is set as substantive discharge room, and configured in the downstream side of the discharge room of the essence Diameter is than previous big second space 142b.

Then, referring to Fig.1, Fig. 2, connecting object and extended direction to drain passageway 104d are described in detail.

Drain passageway 104d is connect with second space 142b.

Above-mentioned drain passageway 104d is for example through the periphery wall of cylinder cap 104, and with the side of a part for crosscutting suction chamber 141 Formula is linearly extended towards discharge 142 side of room, and is opened on second space 142b.In the present embodiment, such as Fig. 2 Shown, drain passageway 104d is extended from the specified position of the periphery of cylinder cap 104 to the diametrically substantially center of discharge room 142. Although not shown, but by vehicle side it is limited, the extended direction of drain passageway 104d can also be set as substantially deviateing sometimes The direction of the radial center of room 142 is discharged.Even in this case, due to the connecting object of drain passageway 104d, i.e. second Space 142b is configured to major diameter, therefore, drain passageway 104d can be linearly formed by an access, so that drain passageway 104d is connect with the first space 142b.

Then, referring to Fig.1, Fig. 6 and Fig. 7, structure and previously described interconnecting part to check valve 200 carry out specifically It is bright.

Check valve 200 is arranged in second space 142b, and in the first space 142a pressure P1 than second space 142b's In the case that pressure P2 is small (P1 < P2), zoning component 160 is will pass through so that the first space 142a to be connected to second space 142b Interconnecting part closure of openings.

In addition, being rule in pressure differential Δ Ps of the pressure P1 than pressure P2 between big and the first space 142a and second space 142b In the case of fixed valve opening pressure difference Po or more (P1 > P2, Δ P >=Po), check valve 200 opens the opening of interconnecting part, is pressing Power P1 is more than pressure P2 and pressure differential Δ P is less than in the case of valve opening differential pressure value Po (P1 > P2, Δ P < Po), by interconnecting part Closure of openings.

Specifically, check valve 200 includes ingate 161c, the valve seat of the first space side opening as interconnecting part 161d, spool 201, compression helical spring 202, the receiving component 203 that spool 201 is accommodated and as the second of interconnecting part The outlet opening 203a1 of space side opening.

Ingate 161c is for example formed in a manner of the radial central portion through zoning portion 161, and is configured in discharge room 142 Radial center.

Valve seat 161d is the component for contacting or separating with spool 201, the opening week from the second space side of ingate 161c Edge is annularly prominent to be formed.

The end face of spool 201 is contacted or is separated with valve seat 161d, has cylinder peripheral surface, and by such as resin material shape At.When spool 201 is abutted with valve seat 161d, ingate 161c is by one end face closure of spool 201, and outlet opening 203a1 By the cylinder periphery face closure of spool 201.

Compression helical spring 202 is the component constituted by spool 201 to the valve seat 161d force application elements to exert a force.

Receiving component 203 is to be located at second space 142b, and in spool 201 and compression helical spring 202 be housed in Portion, and be formed as by such as resin material the component of tubular.Specifically, receiving component 203 includes in a manner of slidable pair Peripheral wall 203a that the cylinder peripheral surface of spool 201 is supported and by the closed bottom wall 203b in one end of peripheral wall 203a, to shape As bottomed tube.Connected with ingate 161c by the space by the sides valve seat 161d in the receiving component 203 of 201 zoning of spool It is logical, and be connected to outlet opening 203a1.Thereby, it constitutes via ingate 161c, the interconnecting part of valve chamber and outlet opening 203a1.

Outlet opening 203a1 is accommodating direction at component 203, specifically circumferentially apart multiple positions of peripheral wall 203a Inner peripheral surface 104f ' the openings of second space 142b.

In the present embodiment, since ingate 161c and valve seat 161d are integrally formed at zoning portion 161, component is accommodated 203 open end is chimeric with the peripheral surface of valve seat 161d, therefore, check valve 200 is fixed on zoning portion 161.In this way, unidirectional Valve 200 is integrally formed at the radial central portion of zoning component 160 with zoning component 160.

In addition, though spool 201 and receiving component 203 are formed by resin material, but not limited to this, it can also be by metal Material is formed.In this case, zoning component 160 can also be formed by resin material.

By the space by 203 side of bottom in the receiving component 203 of 201 zoning of spool via being formed in bottom 203b Intercommunicating pore 203b1 and be connected to second space 142b.Thereby, the pressure P1 of the first space 142a is acted on via ingate 161c In the end face of spool 201, the pressure P2 of second space 142b acts on the other end of spool 201 via intercommunicating pore 203b1. In addition, spool 201 contacted with valve seat 161b according to the first space 142a and the pressure differential Δ P between second space 142b or point It opens, the opening area from ingate 161c to the interconnecting part of outlet opening 203a1 is adjusted.The opening area of above-mentioned interconnecting part Refer in such as outlet opening 203a1, not by the area of the closed part of cylinder peripheral surface of spool 201.

Then, referring to Fig.1, Fig. 6, the action of check valve 200 is illustrated.

In the case of P1 > P2, when Δ P be by compression helical spring 202 force setting valve opening pressure difference Po with When upper, the spool 201 of check valve 200 can leave from valve seat 161d, to open ingate 161c.In addition, in P1 > P2 and Δ P In the case of >=Po, Δ P increases, then the spool 201 of check valve 200 is farther away from valve seat 161d, to make interconnecting part Opening area increases, and Δ P reduces, and the opening area of interconnecting part is smaller.

In addition, as P1 > P2 and Δ P < Po, the spool 201 of check valve 200 can be abutted with valve seat 161d, to enter Oral pore 161c and outlet opening 203a1 closings.

In addition, in P1 < P2, the spool 201 of check valve 200 is abutted with valve seat 161d, to by ingate 161c and go out Oral pore 203a1 closing, to prevent refrigerant from second space 142b to the first space 142a adverse currents.

Then, referring to Fig.1 and Fig. 6, the action of the compressor 100 of present embodiment is illustrated.

For example, when air-conditioning system switches to working condition (connection) from off working state (disconnection), it is based on external signal The solenoid of control valve 300 is set to be powered.At this point, making pressure supply passageway 145 close by control valve 300, in crank chamber Gas blowby (the Japanese generated in the compression section of piston 136 is only flowed into 140：ブローバイガス).It is put due to being configured at The aperture 104e of pressure access 146 has the flow path cross sectional area for being enough to make the blowby gas flows, and therefore, the pressure of crank chamber 140 can drop It is low.Thereby, the stroke amount of piston 136 increases, to which the discharge capacity being discharged from discharge room 142 increases from minimum state.

In addition, the pressure P1 as the first space 142a increases because of compressed action, it is single when becoming P1 > P2 and Δ P >=Po It opens to valve 200, is returned to flow to external refrigerant via second space 142b, drain passageway 104d by compressed refrigerant The high pressure side loop on road flows.At this point, zoning component 160 is by power corresponding with Δ P.In addition, when power corresponding with Δ P When size is more than the size of the stiction generated by O-ring 163, the peripheral part meeting of the second space side end face in zoning portion 161 It is abutted with limitation face 104h, to which zoning component 160 is positioned.

In addition, when air-conditioning system switches to off working state (disconnection) from working condition (connection), to control valve 300 Solenoidal energization will disconnect.At this point, since pressure supply passageway 145 by control valve 300 is open into maximum, first The discharge gas moment of space 142a flows into crank chamber 140.Thereby, make the pressure rise of crank chamber 140.As a result, living The stroke amount of plug 136 reduces, and the discharge capacity being discharged from discharge room 142 becomes minimum.Meanwhile P1 is reduced, and becomes P1 < P2, it is single Valve is closed to valve 200.At this point, due to P1 < P2, zoning component 160 by with want to make zoning component 160 towards valve plate 103 The corresponding power of pressure difference (Δ P) of side movement.In addition, being generated by O-ring 163 when the size of corresponding with Δ P power is more than When the size of stiction, the end face 162a of protrusion 162 can be abutted with valve plate 103, so that zoning component 160 is determined Position.That is, in the case of P1 < P2, the end face 162a of protrusion 162 presses valve plate 103 according to Δ P.

In this way, compressor 100 according to the present embodiment, due to by making zoning component 160 along the height of peripheral wall 104b The inner peripheral surface 104f at position is fitted among direction, to which discharge room 142 is divided into two in the short transverse of peripheral wall 104b, Zoning is the first space 142a being connect with tap 103b and the second space 142b towards bottom wall 104 therefore can be by first Space 142a is set as substantive discharge room 142, and the downstream side configuration in the discharge room of the essence is more recessed than existing compressor The big second space 142b of portion's diameter.Further, since using the structure for being provided with check valve 200, wherein the check valve 200 are connecting drain passageway 104d with the above-mentioned second space 142b bigger than existing recess portion diameter, and P1 < P2's In the case of, the closure of openings of the first space 142a and the second space 142b interconnecting parts being connected to will be made, therefore, above-mentioned list can be passed through Refrigerant is easily prevented from from second space 142b to the first space 142a adverse currents, in addition, can be by drain passageway 104d to valve 200 Easily it is connect with the second space 142b in the space in the downstream side of check valve 200, i.e. major diameter.

Thereby, in existing compressor, even if in the discharge side connecting pin being restricted by layout of vehicle side etc. In the position of mouth 104d ' and the direction of drain passageway 104d, in the case that drain passageway 104d becomes complexity, it can also be easy landform At drain passageway 104d.For example, as in the present embodiment, in discharge side connectivity port 104d ' due tos layout of vehicle side etc. It, can be from the outer lateral discharge room of discharge side connectivity port 104d ' in the case of the specified position for being configured at the peripheral surface of cylinder cap 104 The space in the downstream side of the check valve 200 of radial central portion is linearly readily formed drain passageway by an access 104d。

In such manner, it is possible to provide a kind of compressor, though discharge side connectivity port position and drain passageway direction by In the case of limitation, it can also be readily formed the drain passageway being connect with the space in the downstream side of check valve.

In addition, the first space 142a can be set as to substantive discharge room, and under the discharge room (142a) by the essence The space of the downstream side setting major diameter of trip side, in other words check valve 200.Thus, discharge pressure fluctuation can be efficiently reduced.

In the present embodiment, using such as lower structure, that is, tap 103b is formed in valve plate 103, and zoning component 160 wraps Include the end of the first space side along disk-shaped zoning portion 161 chimeric the inner peripheral surface 104f of peripheral wall 104b and from zoning portion 161 Face is prominent and to the protrusion 162 that valve plate side extends, and in the case of P1 < P2, the end face 162a of protrusion 162 is according to P pairs of Δ Valve plate 103 is pressed.Thereby, even if interconnecting part is closed and makes to act on zoning component by the excessive power that Δ P is generated 160, since the power is accepted by valve plate 103, the chimerism of the zoning component 160 and inner peripheral surface 104f of discharge room 142 is not Unfavorable condition can occur.It thus, can be in the case where being not provided with anticreep component, steadily by zoning component 160 and check valve 200 It is maintained in discharge room 142.

In the present embodiment, the structure pressed valve plate 103 by the end face 162a of protrusion 162 is used. Thereby, valve can be reliably undertaken in by the end face 162a of protrusion 162 by acting on the power of zoning component 160 generated by Δ P Plate 103.

In the present embodiment, it uses such as lower structure, that is, flexible containment member (O-ring 163) is clipped in area It draws component 160 and is discharged between the inner peripheral surface 140f of room 142, so that inner peripheral surface 104f quilt of the zoning component 160 along peripheral wall 104b It is chimeric.Thereby, zoning component 160 can be kept steady in the case where making zoning component 160 not loosened in discharge room 142 It is fixed, in addition, the degree of freedom of the configuration of protrusion 160 can be improved.In addition, even if becoming that if P1 < P2 refrigeration can be reliably prevented Leakage of the agent from second space 142b to the first space 142a, wherein the second space 142b is via the inner circumferential that room 142 is discharged Between face 104f and the cylinder peripheral surface 161a in zoning portion 161.

In the present embodiment, include by the tap 103b multiple needle spring plate valve 138a opened or closed and to corresponding Multiple guard ring 150a that the maximum opening of needle spring plate valve 138a is limited, protrusion 162 is with can be in each needle spring adjacent to each other The mode pressed valve plate 103 between plate valve 138a and between each guard ring 150a adjacent to each other is provided projectingly in zoning portion 161 Circumferentially apart multiple positions.In this way, since protrusion 162 is configured in each needle spring plate valve adjacent to each other and each guard ring Between 150a, therefore, can not to dump valve 138a and guard ring 150a arrangement and design specification impact in the case of, by area It draws component 160 and is configured at zoning component 160.

In the present embodiment, the radial direction at the center and zoning portion 161 of the set of protrusions being made of each protrusion 162 is used Roughly the same structure in center.Thereby, it can be incited somebody to action via multiple protrusions 162 if even if excessive power acts on zoning component 160 Above-mentioned power is steadily undertaken in valve plate 103.

In the present embodiment, it uses such as lower structure, that is, check valve 200 includes：As the first space side of interconnecting part The ingate 161c of opening；As the outlet opening 203a1 of the second space side opening of interconnecting part；And it is located at second space 142b And the receiving component 203 of the tubular accommodated to spool 201, outlet opening 203a1 are circumferentially apart receiving component 203 Towards the inner peripheral surface 104f ' openings of second space 142b at multiple positions.Thereby, due to outlet opening 203a1 and second space 142b Inner peripheral surface 104f ' relatively, therefore, the bottom wall 104a of discharge room 142 can be made close to the bottom of check valve 200.Thus, it can inhibit Increase because by the physique of the configuration of check valve 200 compressor 100 caused by being discharged in room 142.

In the present embodiment, it uses such as lower structure, that is, check valve 200 includes ingate 161c and valve seat 161d, is entered Oral pore 161c is formed in a manner of through zoning component 160, and valve seat 161d leans on the sides second space 142b from ingate 161c's Opening peripheral part annularly prominent formed.In this way, since ingate 161c and valve seat 161d are integrally formed at zoning component 160, therefore, even if setting zoning component 160, will not increase component count on the basis of existing check valve.In addition, entrance Hole 161c and valve seat 161d is not limited to be formed in the structure of zoning component 160, can also be formed in different from zoning component 160 valve seat forms component, and valve seat formation component is fixed on zoning component 160.

In the present embodiment, the case where variable displacement compressor of so-called ramp type being suitable for compressor 100 It is illustrated, the variable displacement compressor of the ramp type makes the first space 142a and song by control valve 300 to adjust The aperture for the pressure supply passageway 145 that handle room 140 is connected to so that the pressure change of crank chamber 140, and according to the pressure change come The inclination angle for changing inclined plate 111, to control the stroke amount of piston 136.In this compressor, due to that will control When valve 300 is opened, the pressure of the first space 142a can reduce, and zoning component is acted on by the excessive power that pressure differential Δ P is generated 160 frequency is got higher, and therefore, it is more suitable to be applicable in the present invention.

Here, in the first embodiment, being formed as columned situation to each protrusion 162 and being illustrated, but not It is confined to this, such as second embodiment that can also be as described below is such, is formed as wall-like.

Fig. 8 is the Local map of the cylinder cap 104 of the compressor 100 of open end surface side observation second embodiment of the invention.It is right Identical symbol is marked in element same as the first embodiment, and is omitted the description, only different parts is illustrated.

In the present embodiment, side of each protrusion 162 ' to extend from the radial center side in zoning portion 16 towards peripheral surface side Formula is formed between each needle spring plate valve 138a and between each guard ring 150a.

Specifically, as shown in figure 8, each protrusion 162 ' is formed as peripheral wall 104b of the one end close to discharge room 142, it is another Hold the wall-like extended to the radial center of discharge room 142.

Thereby, the peripheral wall portion of discharge room 142 that can be by protrusion 162 ' adjacent to each other and between protrusion 162 ' 104b, by the region of the front end side of needle spring plate valve 138a and guard ring 150a and adjacent another needle spring plate valve 138a and guard ring 150a The region zoning of front end side come.Thus, the system being discharged from a tap 103b can be inhibited by the protrusion 162 ' The case where cryogen stream is interfered with the refrigerant stream being discharged from another tap 106b.That is, protrusion 162 ' can be made Play the role of reducing the zoning wall of the pressure oscillation in discharge room 142.

Although in addition, in first embodiment and second embodiment, that are arranged respectively to protrusion 162,162 ' The case where between this adjacent guard ring 150a and needle spring plate valve 138a, is illustrated, and however, it is not limited to this, can also be such as Third embodiment described below is such, is configured to be only capable of pressing guard ring interconnecting piece 150b.

Fig. 9 is the major part enlarged cross-sectional view of the compressor 100 of third embodiment of the invention.For implementing with first The identical element of mode marks identical symbol, and omits the description, and is only illustrated to different parts.

In the present embodiment, protrusion 162 " be with can be abutted with guard ring interconnecting piece 150b come to valve plate 103 carry out by The mode of pressure is provided projectingly on the structure in zoning portion 161.That is, protrusion 162 " can also be configured to end face and guard ring Interconnecting piece 150b is abutted, and is pressed valve plate 103 via needle spring plate valve interconnecting piece 138b.

Specifically, as shown in figure 9, protrusion 162 ' from the ingate 161c for being formed in zoning portion 161 by leaning on first The opening peripheral part of space side is annularly prominent and is constituted towards the peripheral wall of 103 side of valve plate extension.Above-mentioned protrusion 162 " it is interior Portion space is connected to ingate 161c, and is connected to the first space 142a via the 162 " a of opening for being formed in peripheral wall.This Sample, since protrusion 162 " is configured to be only capable of pressing guard ring interconnecting piece 150b, can not to dump valve 138a and In the case that the arrangement of guard ring 150a and design specification impact, zoning component 160 is configured at discharge room 142.In addition, by It is set as cyclic annular in protrusion 162 ", therefore, even if excessive power can steadily accept the power if acting on zoning component 160 In valve plate 103.

In addition, in first embodiment and second embodiment, to only making protrusion 162,162 ' from zoning portion 161 The case where first space side end face is provided projectingly is illustrated, but not limited to this, it can also such as described below Four embodiments are such, are also provided projectingly oily separatory ring-type perisporium 164.

Figure 10 is the major part enlarged cross-sectional view of the compressor 100 of four embodiment of the invention.For with it is first real It applies the identical element of mode and marks identical symbol, and omit the description, only different parts is illustrated.

In the present embodiment, zoning component 160 has a ring-type perisporium 164, and the ring-type perisporium 164 is from interconnecting part by the The opening peripheral part in one space side is annularly prominent to be formed, and positioned at the radially inner side of protrusion 162.

Specifically, ring-type perisporium 164 is with annularly prominent from the first space side end face in zoning portion 161 and to valve plate The mode that 103 sides extend is formed in around the radially inner side and ingate 161c of protrusion 162.Ring-type perisporium 164 is to fastening It is covered around the front end of component 151.The front end of ring-type perisporium 164 is opposite with retainer plate 150.Ring-type perisporium 164 There is gap, and the gap becomes the flow path of refrigerant between front end and retainer plate 150.Alternatively, it is also possible in ring-type perisporium 164 Front end form the groove portion that extends radially through, and the groove portion is set as to the flow path of above-mentioned refrigerant.

By constituting as described above, the refrigerant being discharged from tap 103b and the peripheral surface of ring-type perisporium 164 is made to occur Collision, so that the oil contained by the refrigerant is attached to the peripheral surface of ring-type perisporium 164.Thereby, ring-type perisporium 164 plays oily separation The effect of device can inhibit the oil contained by refrigerant to be flowed out from the first space 142a to second space 142b.As a result, flowing out to The oil mass in external refrigerant circuit is reduced, so as to promote the refrigeration performance of air-conditioning system.

In addition, in this second embodiment, the diameter that can also be provided projectingly ring-type perisporium 164 in protrusion 162 ' is inside Around the ingate 161c of side.In addition, being played in the same manner as the protrusion 162 " of third embodiment and above-mentioned ring-type perisporium 164 The effect of oil eliminator.In addition, under the action of the power generated by Δ P, zoning component 160 can be only by with inner peripheral surface 104f's It is chimeric just can it is fully fixed in the case of, protrusion (162,162 ', 162 ") can not also be set.At this point, can also only will be upper It states ring-type perisporium 164 and is set to zoning portion 161.

In addition, in various embodiments, being configured to the rotation limiting structure by being made of protrusion 161b and recess portion 104g Come the structure limited the circumferential rotation of zoning component 160, wherein the protrusion 161b is the second of zoning portion 161 Be provided projectingly towards second space side at the circumferential suitable position of the peripheral part of space side end face, the recess portion 104g with it is described convex The limitation face 104h for being provided projectingly position and being accordingly formed in cylinder cap 104 of portion 161b.Thereby, cylinder cap 104 can reliably be positioned Check valve 200 and protrusion 162 position, and reliably the rotation of zoning component 160 can be limited.

In addition, the structure of rotation limiting structure is not limited thereto, structure appropriate can be used.For example, real first It applies in mode, such as lower structure can also be used, that is, abutted with the side of guard ring 150a by the side of protrusion 162, to right The rotation of zoning component 160 is limited.It thereby, can be in the case where being not provided with special rotation restriction element, to zoning structure The rotation of part 160 is limited, and structure can be made to simplify.

In addition, in various embodiments, using the protrusion being provided projectingly from the first space side end face in zoning portion 161 (162,162 ', 162 ") structure of radially inner side is more leaned in configuration in the front end than guard ring 150a, and however, it is not limited to this.Though not scheming Show, the protrusion in zoning portion 161 can also annularly be formed in the front end than guard ring 150a and more lean on radial outside, and be configured to It can be chimeric with the discharge inner peripheral surface of peripheral wall 104b of room 142.In this case, by the upper end and height side in peripheral wall 104b Be formed as more slightly smaller than the outer diameter of cricoid protrusion and coplanar to the internal diameter of the inner peripheral surface at intermediate position.In addition, in above structure In, when as P1 < P2, when protrusion presses valve plate 103, as long as preventing from making by above-mentioned press section (abutting part) Leakage of the cryogen from second space 142b to the first space 142a is then not necessarily to the containment members such as the O-ring for preventing refrigerant from leaking. In addition, in said structure, if include the force application elements such as the compression helical spring that zoning component 160 exerts a force towards valve plate side i.e. It can.In addition, in said structure, although can also be arranged prevents refrigerant from being leaked from second space 142b towards the first space 142a Containment member, but in this case, cricoid protrusion can also be configured discontinuously in the circumferential.

In addition, in various embodiments, to drain passageway 104d being said the case where radially extending along cylinder cap 104 Bright, however, it is not limited to this, in the case that in discharge side connectivity port, 104d ' is configured at the bottom wall 104a to form discharge room 142, It can also be formed in a manner of extending through bottom wall 104a and to second space 142b.Although in addition, such as to drain passageway 104d It is only illustrated via the case where formation in cylinder cap 104 shown in Fig. 1, but be not limited to that this.Drain passageway 104 can also It is formed across other casing components (such as cylinder body).Even if in the case that it is above-mentioned these, due to the connection pair of drain passageway 104 As, i.e. second space 142b forms bigger than existing diameter, therefore, drain passageway 104d can be more easily formed than existing.

In addition, in various embodiments, as the compressor of the present invention, by taking the variable displacement compressor of ramp type as an example into It has gone explanation, but has been not limited to ramp type, the variable displacement compressor of oscillation plate type can also be used.In addition, the present invention Compressor uses the variable displacement compressor of no-clutch, but is not limited to no-clutch, such as can also use and be equipped with The variable displacement compressor of electromagnetic clutch.In addition, the compressor of the present invention is not limited to variable displacement compressor, as long as Reciprocating motion type then can be suitably used for fixed-capacity compressor, by all compressors such as motor-driven motor compressor.

More than, present disclosure is illustrated with reference to preferred embodiment, but for art technology For personnel, basic technological thought according to the present invention and enlightenment use various embodiments, this point is self-evident.

(symbol description)

100 ... compressors (variable displacement compressor)；

101a ... cylinder bores；

103 ... valve plates；

103a ... inlet holes；

103b ... taps；

104 ... cylinder caps；

104a ... bottom walls；

104b ... peripheral walls；

104d ... drain passageways；

104f ... inner peripheral surfaces；

104f ' ... inner peripheral surfaces；

110 ... drive shafts；

111 ... inclined plates；

112 ... rotors；

120 ... connecting elements (link mechanism)；

136 ... pistons；

137 ... crawler shoes；

138 ... needle spring plate valves form body (dump valve formation body)；

138a ... needle spring plate valves；

138b ... needle spring plate valve interconnecting pieces；

140 ... crank chambers；

141 ... suction chambers；

142 ... discharge rooms；

The first spaces 142a ...；

142b ... second spaces；

145 ... pressure supply passageways；

150 ... guard rings form body (retainer plate)；

150a ... guard rings；

150b ... guard ring interconnecting pieces；

160 ... zoning components；

161 ... zoning portions；

The ingates 161c ...；

161d ... valve seats；

162,162 ', 162 " ... protrusions；

The end faces 162a ...；

163 ... containment members；

164 ... ring-type perisporiums；

200 ... check valves；

201 ... spools；

203 ... receiving components；

203a1 ... outlet openings；

300 ... control valves；

Po ... valve opening differential pressure values；

The pressure in the first spaces P1 ...；

The pressure of P2 ... second spaces；

The pressure difference in Δ P ... the first space and second space.

Claims (8)

1. a kind of compressor, including：Suction chamber, the suction chamber are configured circlewise centered on the one end of drive shaft, and for system Cryogen flows into；Multiple cylinder bores, multiple cylinder bores are arranged in a manner of surrounding the drive shaft；Tap, the tap with it is each The cylinder bore is correspondingly arranged；Room is discharged, which configures the radially inner side in the suction chamber；Drain passageway, the discharge are logical Road is connect with the discharge room；And check valve, the check valve prevent refrigerant from the drain passageway adverse current,

The compressor makes the piston reciprocating in the cylinder bore move by the rotation of the drive shaft, with to from the sucking The refrigerant that room is drawn into the cylinder bore is compressed, and by the compressed refrigerant via the tap and discharge Room is discharged from the drain passageway, and the compressor is characterized in that,

Including zoning component, the zoning component is chimeric along the inner peripheral surface for the peripheral wall for forming the discharge room, and in the drive shaft Central axis extending direction on the discharge room is divided into two, zoning be the first space being connect with the tap and The second space of bottom wall towards the discharge room,

The drain passageway is connect with the second space,

The pressure hour of second space described in the pressure ratio in first space, the check valve will pass through the zoning component And make the closure of openings for the interconnecting part that first space is connected to the second space,

The tap is formed in valve plate, valve plate configuration the end face of the cylinder body that is used to form the cylinder bore and the peripheral wall it Between,

The zoning component includes：Disk-shaped zoning portion, the zoning portion are chimeric along the inner peripheral surface；And protrusion, this is prominent The end face by the first space side in the portion of rising from the zoning portion is prominent and extends towards valve plate side,

In the case that the pressure of second space described in the pressure ratio in first space is small, the end face of the protrusion is according to institute The pressure difference between the pressure in the first space and the pressure of the second space is stated, the valve plate is pressed.

2. compressor as described in claim 1, which is characterized in that

Flexible containment member is clipped between the zoning component and the inner peripheral surface of the discharge room, so that described Zoning component is chimeric along the inner peripheral surface of the peripheral wall.

3. compressor as claimed in claim 1 or 2, which is characterized in that further include：

Multiple needle spring plate valves, multiple needle spring plate valves are arranged respectively at the tap with the valve plate in first space Forming position is corresponding, at circumferentially apart multiple positions in first space, and along the diameter in first space To extension, to which the corresponding tap be opened or closed；And

Multiple guard rings, multiple guard rings are configured in a manner of corresponding with each allocation position of needle spring plate valve respectively, and The maximum opening of the corresponding needle spring plate valve is limited,

The protrusion between each needle spring plate valve adjacent to each other and between each guard ring adjacent to each other can press the valve plate Mode is provided projectingly at circumferentially apart multiple positions in the zoning portion.

4. compressor as described in claim 1, which is characterized in that

The zoning component has ring-type perisporium, opening periphery by first space side of the ring-type perisporium from the interconnecting part Portion is annularly prominent to be formed, and positioned at the radially inner side of the protrusion.

5. compressor as claimed in claim 1 or 2, which is characterized in that further include：

Needle spring plate valve forms body, which, which forms body, has multiple needle spring plate valves and needle spring plate valve interconnecting piece, wherein multiple The needle spring plate valve is arranged respectively at corresponding with the tap forming position of the valve plate, described in first space At circumferentially apart multiple positions in one space, and radially extending along first space, by the corresponding discharge Hole opens or closes, multiple needle spring plate valve interconnecting pieces each needle spring plate valve radially inner side by the base of each needle spring plate valve End connects；And

Guard ring formed body, the guard ring formed body have multiple guard rings and guard ring interconnecting piece, wherein multiple guard rings with each institute The corresponding mode of allocation position for stating needle spring plate valve configures, and radially extending along first space, with to corresponding institute The maximum opening for stating needle spring plate valve is limited, the guard ring interconnecting piece each guard ring radially inner side by the base of each guard ring End connects,

The protrusion is provided projectingly on institute in a manner of being pressed the valve plate can be abutted with the guard ring interconnecting piece State zoning portion.

6. compressor as described in claim 1, which is characterized in that

The check valve includes：Ingate, the ingate become the first space side opening of the interconnecting part；Outlet opening, this goes out Oral pore becomes the second space side opening of the interconnecting part；And the receiving component of tubular, the receiving component are located at described second Space and spool is accommodated,

The outlet opening is at circumferentially apart multiple positions of the receiving component, to the inner circumferential of the second space Face is open.

7. compressor as claimed in claim 6, which is characterized in that

The check valve also has the valve seat for contacting or leaving with the spool,

The ingate is formed in a manner of through the zoning component,

The opening peripheral part by second space side of the valve seat from the ingate is annularly prominent to be formed.

8. compressor as described in claim 1, which is characterized in that further include：

Crank chamber, the crank chamber are formed in the back side of the piston；

Pressure supply passageway, the pressure supply passageway make first space be connected to the crank chamber；

Switching mechanism, the switching mechanism have inclined plate, the inclined plate rotation and phase together with the drive shaft in the crank chamber For the angle of inclination of the central axis of the drive shaft, the rotary motion of the inclined plate is converted to institute by the switching mechanism State the reciprocating motion of piston；And

Control valve, the control valve are adjusted such that the aperture of the pressure supply passageway pressure change of the crank chamber, And change the inclination angle of the inclined plate by the pressure change, it is controlled with the stroke amount to the piston.