CN104912768B

CN104912768B - Variable displacement swash plate type compressor

Info

Publication number: CN104912768B
Application number: CN201510100477.1A
Authority: CN
Inventors: 山本真也; 榊原健吾; 山崎佑介; 仲井间裕之
Original assignee: Toyoda Automatic Loom Works Ltd
Current assignee: Toyota Industries Corp
Priority date: 2014-03-14
Filing date: 2015-03-06
Publication date: 2017-05-24
Anticipated expiration: 2035-03-06
Also published as: CN104912768A; JP2015175269A; EP2918832A1; KR101729076B1; KR20150107618A; EP2918832B1; JP6217474B2; US20150260175A1

Abstract

The present invention provides a variable displacement swash plate type compressor with high performance and low fabricating cost for a long time. In the variable displacement swash plate type compressor provided by the invention, an orifice is formed in a connect portion (133) and extends from a control pressure chamber (13b) towards the inner of the outer sliding portion (51c). In the compressor, when pressure of the control pressure chamber (13b) is regulated, except the corresponding opening regulation of a high pressure channel (15b) and a low pressure control valve (15c), refrigerant gas is ejected from the control pressure chamber (13b) to a cantboard chamber (25) via the orifice (57). Lubricant and refrigerant gas are ejected from the orifice (57). Thereby, the lubricant is less prone to the control pressure chamber (13b), and deficiency of lubricant in the cantboard chamber (25) is not easy to happen.

Description

Variable displacement type tilted-plate compressor

Technical field

The present invention relates to variable displacement type tilted-plate compressor.

Background technology

Japanese patent application discloses No.H8-105384 and discloses conventional variable displacement type tilted-plate compressor (below In be referred to as compressor).In the compressor, suction chamber, discharge room, swash plate room, centre bore and multiple are formed with the housing Cylinder holes.Swash plate room and centre bore communicate with each other.In the housing, drive shaft is rotatably supported.In swash plate room, if It is equipped with the swash plate that can be rotated by the rotation of drive shaft.Linkage is provided between drive shaft and swash plate.Connecting rod machine Structure allows the change at the inclination angle of swash plate.Herein, inclination angle refers to swash plate relative to orthogonal with the driving axis of drive shaft The angle in direction.In corresponding cylinder holes, piston is housed in a reciprocation manner.For the piston shoes that each piston is arranged in pairs (shoe) as switching mechanism cause corresponding piston by the rotation of swash plate with the stroke corresponding with inclination angle in cylinder holes Move back and forth.Actuator changes the inclination angle.Controlling organization controls the actuator.

Actuator includes the first movable body, the second movable body and control pressure room.Drive shaft is inserted through first can Moving body and the second movable body, first movable body are aligned with the second movable body and can be in the axial directions of drive shaft Side moves up.First movable body is located in centre bore.In addition, being set between the first movable body and the second movable body There is thrust bearing.Swash plate is engaged so as to change inclination angle with the second movable body.Control pressure room is made by internal pressure First movable body and the second movable body are moved.

Controlling organization performs the connection control between control pressure room and suction chamber, and performs control pressure room with discharge Connection control between room, so as to adjust the pressure of the refrigerant in control pressure room.In addition, controlling organization include O-ring and A pair of sealing rings.O-ring and corresponding sealing ring are located at the outer peripheral surface of the first movable body and the inner circumferential table of centre bore Between face.Control pressure room and swash plate room are sealed relative to each other by O-ring and corresponding sealing ring.

In the compressor, be incorporated into the refrigerant discharged in room in control pressure room by controlling organization, thus, control pressure Pressure in power room rises.Therefore, the first movable body is moved along the axial direction of drive shaft in centre bore and makes second Movable body is in axial direction moved.Second movable body increases the inclination angle of swash plate by linkage.Therefore, in the pressure In contracting machine, the discharge capacity that drive shaft often rotates a circle can be increased.

In conventional compressor, during discharge capacity is changed, controlling organization is in control pressure room and swash plate room Controlled come in adjusting control pressure room by the connection between suction chamber and discharge room and control pressure room while sealed against one another Pressure.Therefore, in the compressor, processing method or device for preventing refrigerant from being leaked from control pressure room are necessary 's.Therefore, increase manufacturing cost.

In addition, in the compressor, when the refrigerant in discharging room is introduced in control pressure room, lubricant and system Cryogen is flowed into control pressure room together.The lubricant being flowed into control pressure room is resided in control pressure room.Therefore, In the compressor, the lubricant in swash plate room tends to lacking.In swash plate room, the lubrication of thrust bearing etc. tends to not enough.Cause This, in the compressor, it is difficult to maintain performance in a long time.

In view of conventional situation and design the present invention, and problem to be solved by this invention is to provide one kind and uses Actuator discharges the compressor of capacity to change, and the compressor is realized being manufactured into simultaneously can in a long time to embody high-performance The variable displacement type tilted-plate compressor of this reduction.

The content of the invention

Variable displacement type tilted-plate compressor of the invention includes：Housing, is formed with suction chamber, discharge in the housing Room, swash plate room and cylinder holes；Drive shaft, the drive shaft is rotatably supported by housing；Swash plate, the swash plate being capable of basis The rotation of drive shaft and in swash plate room rotate；Linkage, the linkage is arranged between drive shaft and swash plate and structure Cause to allow swash plate to change relative to the inclination angle with the direction of the axis vertical take-off of drive shaft；Piston, the piston holds in cylinder holes Being set to reciprocally to move；Switching mechanism, the switching mechanism be configured to the rotation for making piston according to swash plate in cylinder holes and with The stroke corresponding with inclination angle is reciprocally moved；Actuator, the actuator can change inclination angle；And controlling organization, The controlling organization is configured to be controlled actuator.

Swash plate room connects with suction chamber.

Actuator includes：Body is limited, the restriction body is set on the driving shaft in swash plate room；Movable body, this may move Body can be in swash plate room along the axial direction movement of drive shaft；And control pressure room, the control pressure room by limit body and Movable body limits and is configured to move movable body by the internal pressure in control pressure room.

Controlling organization includes：Feed path, the feed path is connected with discharge room and control pressure room, and will discharge room In refrigerant be incorporated into control pressure room；And leakage path, the leakage path connects with control pressure room and swash plate room, And by the discharge refrigerant in control pressure room to swash plate room.

Leakage path includes communication path, and the communication path is formed at movable body and limits at least one of body simultaneously And lubricant is emitted into swash plate room together with refrigerant from control pressure room.

The illustration illustrated in implementation method, text disclosed in reference to the accompanying drawings and thought of the invention, it is of the invention Other aspects and advantage will be apparent.

Brief description of the drawings

Fig. 1 is the sectional view of the maximum capacity in the compressor of implementation method 1.

Fig. 2 is the schematic diagram of the controlling organization for showing the compressor in implementation method 1.

Fig. 3 is the amplification sectional view of the major part of the actuator for showing the compressor in implementation method 1.

Fig. 4 is the sectional view of the minimum capacity state in the compressor of implementation method 1.

Fig. 5 is the amplification sectional view of the major part of the actuator for showing the compressor in implementation method 2.

Fig. 6 is the amplification sectional view of the major part of the actuator for showing the compressor in implementation method 3.

Fig. 7 is the amplification sectional view of the major part of the actuator for showing the compressor in implementation method 4.

Fig. 8 is the sectional view of the maximum capacity in the compressor of implementation method 5.

Fig. 9 is the schematic diagram of the controlling organization for showing the compressor in implementation method 5.

Figure 10 is the amplification sectional view of the major part of the actuator for showing the compressor in implementation method 5.

Figure 11 is the sectional view of the minimum capacity state in the compressor of implementation method 5.

Figure 12 is the amplification sectional view of the major part of the actuator for showing the compressor in implementation method 6.

Specific embodiment

Illustrated to implementing embodiments of the present invention 1 to implementation method 6 referring to the drawings.Implementation method 1 is to reality It is variable displacement type single head tilted-plate compressor to apply the compressor in mode 4.On the other hand, in implementation method 5 and implementation method 6 Compressor be variable displacement type double end tilted-plate compressor.The compressor is all arranged on vehicle and is configured to vehicle Air-conditioning equipment refrigerating circuit.

(implementation method 1)

As shown in fig. 1, the compressor in implementation method 1 includes housing 1, drive shaft 3, swash plate 5, linkage 7, multiple Controlling organization 15 shown in piston 9, a pair of piston shoes 11a and 11b, actuator 13 and Fig. 2.

As shown in fig. 1, housing 1 is including the procapsid 17 in the front portion of compressor, in the rear portion of compressor Back casing 19, cylinder body 21 and valve forming board 23 between procapsid 17 and back casing 19.

There is procapsid antetheca 17a and circumference wall 17b, antetheca 17a to extend along the above-below direction of compressor in front side, circumferential Wall 17b and antetheca 17a is integral and extends towards rear side from the front side of compressor.Procapsid 17 passes through antetheca 17a and circumference Wall 17b is formed as the substantially cylindrical shape with bottom.In addition, being formed in procapsid 17 tiltedly by antetheca 17a and circumference wall 17b Plate room 25.

In antetheca 17a, boss 17c prominent forward is formed with.In boss 17c, the inside for ensuring housing 1 is provided with The shaft sealer 27 of the hermetic seal between outside.In addition, in boss 17c, being formed with along the fore-and-aft direction of compressor The the first axis hole 17d for extending.The first sliding bearing 29a is provided with the first axis hole 17d.First sliding bearing 29a receives work For the radial load in drive shaft 3.First sliding bearing 29a corresponds to the journal bearing in the present invention.Furthermore it is possible to using rolling Dynamic bearing substitutes the first sliding bearing 29a.

In circumferential wall 17b, the entrance 250 connected with swash plate room 25 is formed with.Swash plate room 25 is connected to by entrance 250 Unshowned evaporator.Therefore, the low pressure refrigerant gas through evaporator are flowed into swash plate room 25 by entrance 250.Cause This, the pressure in swash plate room 25 is less than the pressure in following discharge rooms 35.

In back casing 19, a part for controlling organization 15 is provided with.In addition, in back casing 19, being formed with the first pressure Power regulation room 31a, suction chamber 33 and discharge room 35.First pressure regulation room 31a is positioned in the core of back casing 19. Discharge room 35 circlewise is positioned at the outer circumferential sides of back casing 19.In addition, in back casing 19 the circlewise landform of suction chamber 33 Into between first pressure regulation room 31a and discharge room 35.Discharge room 35 is connected to unshowned outlet.

In cylinder body 21, circumferentially direction is being equally angularly spaced the cylinder holes 21a being provided with piston 9 as many.Cylinder The front of hole 21a connects with swash plate room 25.In addition, in cylinder body 21, being formed with and the maximum of following inhalation reed valve 41a being opened The retention groove 21b that mouth is adjusted.

In addition, in cylinder body 21, be provided with the way of running through along the fore-and-aft direction of compressor extend simultaneously with swash plate room Second axis hole 21c of 25 connections.The second sliding bearing 29b is provided with the second axis hole 21c.It is noted that can be using rolling Dynamic bearing substitutes the second sliding bearing 29b.

Additionally, in cylinder body 21, being formed with spring housing 21d.Spring housing 21d be located at the axis hole 21c of swash plate room 25 and second it Between.Back-moving spring 37 is provided with spring housing 21d.Back-moving spring 37 is urged with minimal tilt angle towards the front of swash plate room 25 Inclined swash plate 5.In cylinder body 21, the suction passage 39 connected with swash plate room 25 is formed with.

Valve forming board 23 is arranged between back casing 19 and cylinder body 21.Valve forming board 23 include valve plate 40, suction valve plate 41, Discharge valve plate 43 and holding plate 45.

In valve plate 40, discharge valve plate 43 and holding plate 45, the suction inlet 40a as many with cylinder holes 21a is formed with.In valve In plate 40 and suction valve plate 41, the outlet 40b as many with cylinder holes 21a is formed with.Corresponding cylinder holes 21a is by corresponding suction Entrance 40a and connected with suction chamber 33 and by corresponding outlet 40b with discharge room 35 connect.In addition, in valve plate 40th, in suction valve plate 41, discharge valve plate 43 and holding plate 45, it is formed with the first intercommunicating pore 40c and the second intercommunicating pore 40d.Suction Room 33 is communicated with each other with suction passage 39 by the first intercommunicating pore 40c.Therefore, swash plate room 25 and suction chamber 33 communicate with each other.

Suction valve plate 41 is arranged on the preceding surface of valve plate 40.At suction valve plate 41, multiple inhalation reed valves are formed with 41a, multiple inhalation reed valve 41a can open and close suction inlet 40a by elastic deformation.In addition, discharge valve plate 43 sets Put on the rear surface of valve plate 40.At discharge valve plate 43, multiple discharge leaf valve 43a, multiple discharge leaf valve 43a are formed with Outlet 40b can be opened and closed by elastic deformation.Holding plate 45 is arranged on the rear surface of discharge valve plate 43.Keep The maximum opening of the regulation discharge leaf valve of plate 45 43a.

Drive shaft 3 is inserted from boss 17c sides towards the rear side of housing 1.The front of drive shaft 3 is inserted through boss 17c In shaft sealer 27, and axially supported by the first sliding bearing 29a in the first axis hole 17d.In addition, drive shaft 3 Rear end side axially supported by the second sliding bearing 29b in the second axis hole 21c.In this way, drive shaft 3 is relative to housing 1 in the way of driving axis O1 rotations by can support.In the second axis hole 21c, by the rear end of drive shaft 3 in the second axle Second pressure regulation room 31b is limited in the 21c of hole.Second pressure regulation room 31b is adjusted by the second intercommunicating pore 40d with first pressure Room 31a is connected.First pressure regulation room 31a and second pressure regulation room 31b forms stilling chamber 31.

The rear end of drive shaft 3 is provided with O-ring 49a and 49b.Therefore, O-ring 49a and 49b be located at drive shaft 3 with Sealing the space between swash plate room 25 and stilling chamber 31 between second axis hole 21c.

In addition, drive shaft 3 is attached with linkage 7, swash plate 5 and actuator 13.Linkage 7 includes projecting plate 51, shape Into a pair of the protruded arms 53 in projecting plate 51 and a pair of swash plate arm 5e being formed in swash plate 5.In the compressor, dash forward Ejecting plate 51 forms linkage 7 and as the restriction body in the present invention.It is noted that in Fig. 1, illustrate only a protrusion Arm 53 and a swash plate arm 5e.Same situation is also applied for Fig. 4.

Projecting plate 51 is shaped generally as annular shape and is arranged on the front of swash plate 5.As shown in Figure 3, projecting plate 51 Including fixed part 51a, fixed flange part 51b and outer sliding part 51c.Fixed part 51a is located at the center of projecting plate 51.In fixation In portion 51a, patchhole 51d is provided with the way of running through.Drive shaft 3 is press-fitted in patchhole 51d.Therefore, projecting plate 51 are fixed to drive shaft 3 and can integrally be rotated with drive shaft 3.

Fixed flange part 51b is located at the front end of projecting plate 51 and extends radially outward direction from fixed part 51a. Outer sliding part 51c is located at the outer circumferential side of fixed part 51a, from the end of fixed flange part 51b along the driving axis as drive shaft 3 Axial direction O1 extend and be formed as the cylindrical shape concentric with axial direction O1.The inner side of outer sliding part 51c with it is oblique Plate room 25 connect and be swash plate room 25 a part.In addition, being provided with thrust bearing between projecting plate 51 and antetheca 17a 55.Thrust bearing 55 receives to act on the thrust in drive shaft 3.Thrust bearing 55 corresponds to the thrust bearing in the present invention.

Protruded arm 53 extends back from outer sliding part 51c.In outer sliding part 51c, in the position between protruded arm 53 Install and be equipped with guidance surface 51e.Guidance surface 51e is formed as being sloped downwardly to the back-end from front.

As shown in fig. 1, swash plate 5 is formed as annular flat shape and including surface 5b after preceding surface 5a.On preceding surface On 5a, the counterweight part 5c that the front of oriented swash plate 5 protrudes is formed.When the inclination angle of swash plate 5 is maximum, counterweight part 5c and projecting plate 51 are in contact.Patchhole 5d is centrally formed with swash plate 5.In addition, drive shaft 3 is inserted through patchhole 5d.

Swash plate arm 5e is formed on preceding surface 5a.Swash plate arm 5e the past surface 5a extend forward.In addition, in swash plate 5, Approximately hemispheric convex portion 5g is provided with preceding surface 5a in a projecting manner.Convex portion 5g is located between swash plate arm 5e.

In the compressor, swash plate arm 5e is inserted between protruded arm 53, projecting plate 51 is connected with swash plate 5. Therefore, swash plate 5 can rotate together with projecting plate 51 in swash plate room 25.Projecting plate 51 and swash plate 5 are connected in this way, by This, in swash plate arm 5e, the end side of swash plate arm 5e is in contact with guidance surface 51e.Swash plate arm 5e is sliding on guidance surface 51e It is dynamic, thus, swash plate 5 can make swash plate 5 relative to the direction orthogonal with axial direction O1 inclination angle from Fig. 1 shown in maximum incline Oblique angle changes the minimal tilt angle shown in Fig. 4, while generally remaining top dead center position T.

Actuator 13 includes projecting plate 51, movable body 13a and control pressure room 13b.

As shown in Figure 3, drive shaft 3 is inserted through movable body 13a.Movable body 13a can be moved in axial direction O1 It is dynamic to be slided in contact with drive shaft 3 simultaneously.Movable body 13a is formed as the cylindrical shape coaxial with drive shaft 3.It is removable Body 13a includes the first cylindrical portion 131, the second cylindrical portion 132 and connecting portion 133.First cylindrical portion 131 is in movable body 13a It is positioned adjacent to swash plate 5 and is set in the way of it can slide relative to drive shaft 3.In the inner circumferential of the first cylindrical portion 131 O-ring 49c is provided with surface.

Service portion 134 has been integrally formed into the rear end of the first cylindrical portion 131.As shown in fig. 1, service portion 134 Vertically extend and be in contact with convex portion 5g from the top dead center position T for being positioned against swash plate 5 near axial direction O1.Cause This, movable body 13a can integrally rotate with projecting plate 51 and swash plate 5.

As shown in Figure 3, the second cylindrical portion 132 is positioned in the front portion of movable body 13a.Second cylindrical portion 132 is formed It is the diameter bigger than the diameter of the first cylindrical portion 131.O-ring is provided with the outer peripheral surface of the second cylindrical portion 132 49d.Connecting portion 133 is located between the first cylindrical portion 131 and the second cylindrical portion 132, and from before the rear direction of movable body 13a Diameter gradually increases Fang Yanshen simultaneously.The rear end of connecting portion 133 is connected with the first cylindrical portion 131, and before connecting portion 133 End is connected with the second cylindrical portion 132.

The outer sliding part 51c of projecting plate 51 enters outer sliding part 51c's by making the second cylindrical portion 132 and connecting portion 133 Inner side surround movable body 13a.Second cylindrical portion 132 and connecting portion 133 can be contained in its inner side by outer sliding part 51c. Therefore, the second cylindrical portion 132 can be slided in outer sliding part 51c, i.e. be slided on the inwall 510 of outer sliding part 51c.

Control pressure room 13b is by the second cylindrical portion 132 in outer sliding part 51c, connecting portion 133 and the shape of drive shaft 3 Separate into and with swash plate room 25.Control pressure room 13b is sealed by O-ring 49c and 49d relative to swash plate room 25.

Throttle orifice 57 is the front in connecting portion 133 --- i.e., near the second cylindrical portion 132 in connecting portion 133 That side --- formed through drilling.Throttle orifice 57 corresponds to the communication path in the present invention.

Throttle orifice 57 is extended into connecting portion 133 and inclined on the side to the back-end from front.More specifically, throttle orifice 57 Extend into so that together with refrigerant gas from throttle orifice 57 discharge lubricant be supplied to positioned at the second cylindrical portion 132 with it is outer Slipper between the inwall 510 of sliding part 51c.As noted previously, as the inner side of outer sliding part 51c connects with swash plate room 25 Lead to, therefore control pressure room 13b is communicated with each other with swash plate room 25 by throttle orifice 57.It is noted that the throttle orifice 57 can be with It is formed in the second cylindrical portion 132.

As shown in fig. 1, in drive shaft 3, it is formed with what in axial direction O1 extended from the rear end of drive shaft 3 to front end Axial path 3a and extended in a radial direction from the front end of axial path 3a and lead to the outer peripheral surface of drive shaft 3 Radial path 3b.Stilling chamber 31 is led in the rear end of axial path 3a.On the other hand, radial path 3b leads to control pressure Room 13b.Stilling chamber 31 is communicated with each other with control pressure room 13b by axial path 3a and radial path 3b.

Drive shaft 3 is connected to pulley or electromagnetic clutch not shown in figure by being formed at the threaded portion 3e of end.

Each piston 9 is respectively contained in corresponding cylinder holes 21a and can reciprocally be moved in corresponding cylinder holes 21a. Discharge chambe 59 is limited in corresponding cylinder holes 21a by corresponding piston 9 and valve forming board 23.

In piston 9, junction surface 9a is recessed.In the 9a of junction surface, be respectively arranged with hemispheric piston shoes 11a and 11b.Piston shoes 11a and 11b is by the reciprocating motion for being converted into piston 9 of swash plate 5.Piston shoes 11a and 11b correspond in the present invention Switching mechanism.Therefore, piston 9 can reciprocally be moved in cylinder holes 21a with the stroke corresponding with the inclination angle of swash plate 5.

As shown in Figure 2, controlling organization 15 is voltage-controlled by low-pressure channel 15a, high-pressure channel 15b, low-pressure control valve 15c, height Valve 15d processed, axial path 3a, radial path 3b and throttle orifice as described above 57 are constituted.

Low-pressure channel 15a is connected to stilling chamber 31 and suction chamber 33.Therefore, control pressure room 13b, stilling chamber 31 and suction chamber 33 communicated with each other by low-pressure channel 15a, axial path 3a and radial path 3b.Releasing in the present invention is logical Road is formed by low-pressure channel 15a, axial path 3a, radial path 3b and throttle orifice 57.

High-pressure channel 15b is connected to stilling chamber 31 and discharge room 35.Control pressure room 13b, the and of stilling chamber 31 Discharge room 35 is communicated with each other by high-pressure channel 15b, axial path 3a and radial path 3b.Feed path in the present invention by High-pressure channel 15b, axial path 3a and radial path 3b are formed.

Low-pressure control valve 15c is provided with low-pressure channel 15a.Low-pressure control valve 15c can be based in suction chamber 33 Pressure adjusts the aperture of low-pressure channel 15a.In addition, being provided with high pressure control valve 15d in high-pressure channel 15b.High voltage control Valve 15d can adjust the aperture of high-pressure channel 15b based on the pressure in suction chamber 33.

In the compressor, it is connected to the pipe of evaporator and is connected with the entrance 250 shown in Fig. 1.It is connected to condenser Pipe be connected with outlet.Condenser is connected to evaporator via pipe and expansion valve.For the refrigeration of the air-conditioning equipment of vehicle Compressors, evaporator, expansion valve, condenser etc. is returned to constitute.It is noted that evaporator, expansion valve, condenser and corresponding The diagram of pipe be omitted.

In the compressor of construction as described above, drive shaft 3 rotates, and thus, swash plate 5 rotates and corresponding piston 9 exists Reciprocally moved in corresponding cylinder holes 21a.Therefore, discharge chambe 59 changes capacity according to piston stroke.Therefore, by entrance 250 refrigerant gas being drawn into swash plate room 25 from evaporator pass to suction chamber 33 and in discharge chambe 59 via suction passage 39 It is middle to be compressed.The refrigerant gas compressed in discharge chambe 59 are discharged to discharge room 35 and are expelled to condensation from outlet Device.

In the compressor, can be by with the row at the inclination angle of the change swash plate 5 of actuator 13 and increase or reduction piston 9 Journey changes discharge capacity.

Specifically, in the compressor, in controlling organization 15, the high pressure control valve 15d regulation high pressures shown in Fig. 2 are led to The aperture of road 15b, the pressure in stilling chamber 31 is increased from there through the refrigerant gas in discharge room 35 and and then is increased Pressure in big control pressure room 13b.In addition, the regulation of the aperture of low-pressure channel 15a is performed by low-pressure control valve 15c, by This reduces the pressure in the 13b of control pressure room.

In addition, in the compressor, the refrigerant gas in the 13b of control pressure room are discharged to outer cunning via throttle orifice 57 The inner side of dynamic portion 51c, and further it is discharged to swash plate room 25.In this way, in the compressor, by logical to high pressure The corresponding aperture regulation of road 15b and low-pressure control valve 15c and eject regulation via the refrigerant gas of throttle orifice 57 Pressure in the 13b of control pressure room.

If high pressure control valve 15d makes, and the aperture of high-pressure channel 15b reduces or low-pressure control valve 15c makes low-pressure channel The aperture increase of 15a, then the pressure in the 13b of control pressure room reduces.In this case, as described above, control pressure room Refrigerant gas in 13b are discharged to swash plate room 25 via throttle orifice 57.Therefore, control pressure room 13b and swash plate room 25 Between pressure differential reduce.Therefore, as shown in fig. 1, in actuator 13, by acting on the piston compression stress on swash plate 5, In axial direction O1 is slided movable body 13a from the projecting plate 51 that is positioned against near swash plate 5 in outer sliding part 51c.

Meanwhile, in the compressor, swash plate arm 5e slides to move away axial direction O1 on guidance surface 51e.Cause This, in swash plate 5, lower dead center side pivots while generally remaining top dead center position T along clockwise direction.In this way, in the pressure In contracting machine, inclination angle increase of the swash plate 5 relative to the axial direction O1 of drive shaft 3.Therefore, in the compressor, the row of piston 9 Cheng Zeng great, and the discharge capacity increase that drive shaft 3 often rotates a circle.It is noted that the inclination angle of the swash plate 5 shown in Fig. 1 It is the allowable angle of inclination in the compressor.

On the other hand, if high pressure control valve 15d shown in Fig. 2 makes the aperture of high-pressure channel 15b increase or low pressure control Valve 15c processed reduces the aperture of low-pressure channel 15a, then the pressure increase in the 13b of control pressure room.Therefore, control pressure room Pressure differential increase between 13b and swash plate room 25.In this case, refrigerant gas are discharged to tiltedly via throttle orifice 57 Plate room 25.Therefore, as shown in Figure 4, in axial direction O1 is slided movable body 13a towards swash plate 5 in outer sliding part 51c, Move away from projecting plate 51 simultaneously.

Therefore, in the compressor, rear crush lobes 5g of the service portion 134 towards swash plate room 25.Therefore, swash plate arm 5e Slide to approach axial direction O1 on guidance surface 51e.Therefore, in swash plate 5, lower dead center side pivots in the counterclockwise direction, Generally remain top dead center position T simultaneously.In this way, in the compressor, axial direction O1 of the swash plate 5 relative to drive shaft 3 Inclination angle reduce.Therefore, in the compressor, the stroke of piston 9 reduces, and the discharge that drive shaft 3 often rotates a circle is held Amount reduces.It is noted that the inclination angle of the swash plate 5 shown in Fig. 4 is the minimal tilt angle in the compressor.

As described above, in the compressor, when the pressure in adjusting control pressure room 13b, except high-pressure channel 15b and Outside the corresponding aperture regulation of low-pressure control valve 15c, refrigerant gas by from inside the 13b of control pressure room via throttle orifice 57 It is expelled to swash plate room 25.Therefore, in the compressor, when the pressure in adjusting control pressure room 13b, it is not necessary to fully seal Control pressure room 13b.Only just it is enough to seal control pressure room 13b by O-ring 49c and 49d.

Throttle orifice 57 makes lubricant be expelled to swash plate room 25 from inside the 13b of control pressure room together with refrigerant gas.Cause This, in the compressor, even if when lubricant is introduced in the 13b of control pressure room in the refrigerant gas in discharging room 35 In the case of being flowed into together with refrigerant gas in the 13b of control pressure room, lubricant remain to together with refrigerant gas by from Inside the 13b of control pressure room swash plate room 25 is expelled to via throttle orifice 57.

In the compressor, throttle orifice 57 is formed in connecting portion 133.Therefore, in the compressor, can be by can Produced centrifugal force when moving body 13a rotates and lubricant is flowed out from throttle orifice 57.Therefore, in the compressor In, lubricant is less prone to reside in the 13b of control pressure room.The situation of the lubricant starvation in swash plate room 25 is less prone to out It is existing.

Herein, in the compressor, throttle orifice 57 is extended into and caused together with refrigerant gas from the discharge of throttle orifice 57 Lubricant is supplied to the slipper between the inwall 510 of the second cylindrical portion 132 and outer sliding part 51c.Therefore, in the compression In machine, when the inclination angle of swash plate 5 reduces from maximum rating, i.e. when movable body 13a is square vertically in outer sliding part 51c To O1 towards swash plate 5 slide when, by the lubricant discharged from throttle orifice 57 to the second cylindrical portion 132 with outer sliding part 51c's Slipper between inwall 510 is suitably lubricated.Therefore, in the compressor, the second cylindrical portion 132 can be slided outside Suitably slided on the inwall 510 of dynamic portion 51c.Therefore, in the compressor, drive shaft can be suitably changed in a long time The 3 discharge capacity for often rotating a circle.

Therefore, according to the compressor of implementation method 1, in the compressor for changing discharge capacity using actuator 13, compression Machine embodies high-performance in a long time, while realizing the reduction of manufacturing cost.

(implementation method 2)

As shown in Figure 5, in the compressor in implementation method 2, the pressure that throttle orifice 61 comes in alternate embodiments 1 is set Throttle orifice 57 in contracting machine.Throttle orifice 61 is formed in the fixed flange part 51b of projecting plate 51.Throttle orifice 61 is from control pressure room 13b extends towards antetheca 17a so that the lubricant from the discharge of throttle orifice 61 together with refrigerant gas is supplied to thrust bearing 55.Throttle orifice 61 is open near thrust bearing 55.Therefore, control pressure room 13b and swash plate room 25 are connected each other by throttle orifice 61 It is logical.In addition, in the compressor, leakage path in the present invention by low-pressure channel 15a, axial path 3a, radial path 3b and Throttle orifice 61 is formed.It is noted that throttle orifice 61 can be formed in fixed part 51a.Miscellaneous part and reality in the compressor The part for applying compressor in mode 1 is identical.Identical part is by identical reference and symbol logo.Omit on described The detailed description of part.

In the compressor, when the pressure in adjusting control pressure room 13b, except high-pressure channel 15b and low voltage control Outside the regulation of the corresponding aperture of valve 15c, refrigerant gas are arranged via throttle orifice 61 from the inside of control pressure room 13b Go out to swash plate room 25.Herein, in the compressor, throttle orifice 61 is formed in fixed flange part 51b so that with refrigerant gas The lubricant from the discharge of throttle orifice 61 is supplied to thrust bearing 55 together.Therefore, in the compressor, can be with from throttle orifice 61 The lubricant of discharge is lubricated to thrust bearing 55.Therefore, in the compressor, it is less prone to be sent out in thrust bearing 55 Life stings glutinous, and can improve durability.In the compressor in other kinds of effect and implementation method 1 in the compressor Effect is identical.

(implementation method 3)

As shown in Figure 6, in the compressor in implementation method 3, the compression in the alternate embodiments 1 of throttle orifice 63 is set Throttle orifice 57 in machine.Throttle orifice 63 is formed in the fixed flange part 51b of projecting plate 51.Throttle orifice 63 is from control pressure room 13b extends towards drive shaft 3 so that the lubricant from the discharge of throttle orifice 63 together with refrigerant gas is supplied to the first slip Bearing 29a.Therefore, control pressure room 13b and swash plate room 25 are communicated with each other by throttle orifice 63.In the compressor, the present invention In leakage path formed by low-pressure channel 15a, axial path 3a, radial path 3b and throttle orifice 63.It is noted that throttle orifice 63 can be formed in fixed part 51a.Miscellaneous part in the compressor is identical with the part of the compressor in implementation method 1.

In the compressor, when the pressure in adjusting control pressure room 13b, except high-pressure channel 15b and low voltage control Outside the regulation of the corresponding aperture of valve 15c, refrigerant gas are arranged via throttle orifice 63 from the inside of control pressure room 13b Go out to swash plate room 25.Herein, in the compressor, throttle orifice 63 is formed in fixed flange part 51b so that with refrigerant gas The lubricant from the discharge of throttle orifice 63 is supplied to the first sliding bearing 29a together.Therefore, in the compressor, can be with from section The lubricant of the discharge of discharge orifice 63 is lubricated to the first sliding bearing 29a.Therefore, in the compressor, it is less prone to driving Sting glutinous between the sliding bearing 29a of moving axis 3 and first, and durability can be improved.It is other kinds of in the compressor Effect is identical with the effect in the compressor in implementation method 1.

(implementation method 4)

As shown in Figure 7, in the compressor in implementation method 4, in partly changing the compressor in implementation method 1 Procapsid 17 and projecting plate 51 shape and change the setting of the sliding bearing 29a of shaft sealer 27 and first.Specifically Ground, in the compressor, compared with the compressor in implementation method 1, first axis hole 17d is formed as diameter expansion in procapsid 17 Greatly, thus shaft sealer 27 is arranged in the first axis hole 17d.Therefore, shaft sealer 27 faces swash plate room 25.In the pressure In contracting machine, compared with the compressor in implementation method 1, projecting plate 51 extends forwards, and thus, the first sliding bearing 29a is set Between antetheca 17a and fixed flange part 51b.

In the compressor, the throttle orifice 57 in the compressor in the alternate embodiments 1 of throttle orifice 65 is set.Throttle orifice 65 It is formed in the fixed flange part 51b of projecting plate 51.Throttle orifice 65 from control pressure room 13b towards procapsid 17 extend cause with Lubricant of the refrigerant gas together from the discharge of throttle orifice 65 is supplied to shaft sealer 27.Therefore, control pressure room 13b with Swash plate room 25 is communicated with each other by throttle orifice 65.In the compressor, the leakage path in the present invention is by low-pressure channel 15a, axle Formed to path 3a, radial path 3b and throttle orifice 65.Compressor in miscellaneous part in the compressor and implementation method 1 Part is identical.

In the compressor, when the pressure in adjusting control pressure room 13b, except high-pressure channel 15b and low voltage control Outside the regulation of the corresponding aperture of valve 15c, refrigerant gas are arranged via throttle orifice 65 from the inside of control pressure room 13b Go out to swash plate room 25.Herein, in the compressor, throttle orifice 65 is formed in fixed flange part 51b so that with refrigerant gas The lubricant from the discharge of throttle orifice 65 is supplied to shaft sealer 27 together.Therefore, in the compressor, can be with from throttle orifice The lubricants of 65 discharges are lubricated to shaft sealer 27.Therefore, in the compressor, shaft sealer 27 and drive shaft Space between 3 is suitably lubricated.

In the compressor, the first sliding bearing 29a is arranged between antetheca 17a and fixed flange part 51b, and axle is close Seal apparatus 27 are arranged in the first axis hole 17d.Therefore, in the compressor, compared with the compressor in implementation method 1, can be by Shaft sealer 27 is close to projecting plate 51 and sets each other.The length of boss 17c can be reduced.Therefore, in the compressor, with reality The compressor applied in mode 1 is compared, and can reduce the size of the compressor.Other kinds of effect and implementation method in the compressor The effect in compressor in 1 is identical.

(implementation method 5)

As shown in Figure 8, the compressor in implementation method 5 include housing 10, drive shaft 30, swash plate 50, linkage 70, Controlling organization 150 shown in multiple pistons 90, a pair of piston shoes 110a and 110b, actuator 160 and Fig. 9.

As shown in Figure 8, housing 10 includes procapsid 117, the rear portion positioned at compressor in the front portion of compressor In back casing 119, the first cylinder body 121 between procapsid 117 and back casing 119 and the second cylinder body 123 and first The valve forming board 141 of valve forming board 139 and second.

In procapsid 117, boss 117a prominent forward is formed with.In boss 117a, being provided with ensures housing 10 Inside and outside between hermetic seal shaft sealer 125.In addition, in procapsid 117, being formed with the first suction chamber 127a and first discharge chamber 129a.First suction chamber 127a is located at radially in procapsid 117 relative to first discharge chamber 129a Inner side.First discharge chamber 129a is formed as tubular shape and the footpath positioned at the first suction chamber 127a in procapsid 117 is outside Side.

In addition, in procapsid 117, communication path 118a before being formed with first.The front end of communication path 118a before first Side connects with first discharge chamber 129a.The rear end side of communication path 118a leads to the rear end of procapsid 117 before first.

In back casing 119, a part for controlling organization 150 is provided with.In back casing 119, the second suction is formed with Room 127b, the second discharge room 129b and stilling chamber 131.Stilling chamber 131 is positioned at the core of back casing 119 In.Second suction chamber 127b be formed as tubular shape and be positioned in back casing 119 stilling chamber 131 footpath it is outside Side.Second discharge room 129b is again formed as tubular shape and the radial direction of the second suction chamber 127b is positioned in back casing 119 Outside.

In addition, in back casing 119, communication path 120a after being formed with first.The rear end of communication path 120a after first Side connects with the second discharge room 129b.The front end of back casing 119 is led in the front of communication path 120a after first.

Swash plate room 330 is formed between the first cylinder body 121 and the second cylinder body 123.

In the first cylinder body 121, multiple first cylinder holes 121a circumferentially direction being equally angularly spaced in parallel with each other Formed.In addition, in the first cylinder body 121, being formed with the first axis hole 121b, drive shaft 30 is inserted through first axis hole 121b. In the first axis hole 121b, the first sliding bearing 122a is provided with.

In addition, in the first cylinder body 121, being formed with and be connected with the first axis hole 121b and coaxial with the first axis hole 121b The first recess 121c.First recess 121c connected with swash plate room 330 and be swash plate room 330 a part.First stops Thrust bearing 135a is arranged at the front end of the first recess 121c.In addition, in the first cylinder body 121, being formed with permission swash plate room 330 and first the first communication path 137a that communicate with each other of suction chamber 127a.In addition, in the first cylinder body 121, to as described below The first retention groove 121e that is adjusted of maximum opening of corresponding first inhalation reed valve 691a be concave type.

In addition, in the first cylinder body 121, communication path 118b before being formed with second.Before second before communication path 118b The front of the first cylinder body 121 is led at end.The rear end side of the first cylinder body 121 is led in the rear end of communication path 118b before second.

In the second cylinder body 123, as in the first cylinder body 121, multiple second cylinder holes 123a are formed with.Accordingly Second cylinder holes 123a is formed in couples with before and after corresponding first cylinder holes 121a.

In addition, in the second cylinder body 123, being formed with the second axis hole 123b, drive shaft 3 is inserted through second axis hole 123b.The rear end of the second axis hole 123b connects with stilling chamber 131.In addition, in the second axis hole 123b, being provided with the second cunning Dynamic bearing 122b.It is noted that rolling bearing can be respectively provided with to substitute the first sliding bearing 122a and the second sliding bearing 122b。

In addition, in the second cylinder body 123, being formed with and connected with the second axis hole 123b and coaxial with the second axis hole 123b Second recess 123c.Second recess 123c also connected with swash plate room 330 and be swash plate room 330 a part.Second Thrust bearing 135b is arranged on the rear end of the second recess 123c.Second thrust bearing 135b corresponds to the thrust shaft in the present invention Hold.In addition, in the second cylinder body 123, being formed with allow swash plate room 330 to be communicated with each other with the second suction chamber 127b second and connecting Path 137b.In addition, in the second cylinder body 123, the maximum opening to the second inhalation reed valve 711a as described below is adjusted The corresponding second retention groove 123e of section is concave type.

In the second cylinder body 123, be formed with outlet 126, converge discharge room the 128, the 3rd before after communication path 118c, second Communication path 120b and entrance 330a.Outlet 126 communicates with each other with discharge room 128 is converged.Converge discharge room 128 via outlet 126 condensers for being connected to unshowned composition pipeline.

The front end of the second cylinder body 123 is led in the front of communication path 118c before 3rd.Communication path 118c before 3rd Rear end side is connected with discharge room 128 is converged.When the first cylinder body 121 and the second cylinder body 123 is coupled, communication path 118c before the 3rd Rear end side with communication path 118b before second is connected.

Entrance 330a is connected with the evaporator of unshowned composition pipeline.Therefore, swash plate room 330 and evaporator are via entering Mouthful 330a and be connected.

First valve forming board 139 is arranged between the cylinder body 121 of procapsid 117 and first.In addition, the second valve forming board 141 It is arranged between the cylinder body 123 of back casing 119 and second.

First valve forming board 139 includes that the first valve plate 690, first sucks the discharge valve plate 692 of valve plate 691, first and the One holding plate 693.In the first valve plate 690, first discharges the holding plate 693 of valve plate 692 and first, it is formed with and the first cylinder holes 121a the first inlet hole 690a as many.In addition, in the first valve plate 690 and the first suction valve plate 691, being formed with and first Cylinder holes 121a the first tap 690b as many.In addition, sucking valve plate 691, the first dump valve in the first valve plate 690, first In the holding plate 693 of plate 692 and first, the first suction intercommunicating pore 690c is formed with.In addition, in the first valve plate 690 and the first suction In valve plate 691, the first discharge intercommunicating pore 690d is formed with.

First cylinder holes 121a is connected by the first inlet hole 690a with the first suction chamber 127a.First cylinder holes 121a is by the One tap 690b is connected with first discharge chamber 129a.First suction chamber 127a and the first communication path 137a is by the first suction Intercommunicating pore 690c communicates with each other.Communication path 118b discharges intercommunicating pore by first before communication path 118a and second before first 690d communicates with each other.

First suction valve plate 691 is arranged on the rear surface of the first valve plate 690.At the first suction valve plate 691, it is formed with Multiple first inhalation reed valve 691a, the multiple first inhalation reed valve 691a can be opened and closed by elastic deformation Corresponding first inlet hole 690a.In addition, the first discharge valve plate 692 is arranged on the preceding surface of the first valve plate 690.In first row Go out at valve plate 692, be formed with multiple first and discharge leaf valve 692a, the multiple first discharge leaf valve 692a can be by bullet Property deformation and open and close corresponding first tap 690b.Before first holding plate 693 is arranged on the first discharge valve plate 692 On surface.First holding plate 693 adjusts the maximum opening of corresponding first discharge leaf valve 692a.

Second valve forming board 141 includes that the second valve plate 710, second sucks the discharge valve plate 712 and second of valve plate 711, second Holding plate 713.In the second valve plate 710, second discharges the holding plate 713 of valve plate 712 and second, it is formed with and the second cylinder holes 123a The second inlet hole 710a as many.In addition, in the second valve plate 710 and the second suction valve plate 711, being formed with and the second cylinder holes 123a the second tap 710b as many.In addition, sucking the discharge valve plate 712 of valve plate 711, second in the second valve plate 710, second In the second holding plate 713, the second suction intercommunicating pore 710c is formed with.In addition, in the second valve plate 710 and the second suction valve plate In 711, the second discharge intercommunicating pore 710d is formed with.

Corresponding second cylinder holes 123a is connected by corresponding second inlet hole 710a with the second suction chamber 127b.Separately Outward, corresponding second cylinder holes 123a is connected by corresponding second tap 710b with the second discharge room 129b.Second inhales The 127b and the second communication path 137b that enters the room is communicated with each other by the second suction intercommunicating pore 710c.Communication path 120a after first With second after communication path 120b by second discharge intercommunicating pore 710d and communicate with each other.

Second suction valve plate 711 is arranged on the preceding surface of the second valve plate 710.At the second suction valve plate 711, it is formed with Multiple second inhalation reed valve 711a, the multiple second inhalation reed valve 711a can be opened and closed by elastic deformation Corresponding second inlet hole 710a.In addition, the second discharge valve plate 712 is arranged on the rear surface of the second valve plate 710.In second row Go out at valve plate 712, be formed with multiple second and discharge leaf valve 712a, the multiple second discharge leaf valve 712a can be by bullet Property deformation and open and close corresponding second tap 710b.After second holding plate 713 is arranged on the second discharge valve plate 712 On surface.Second holding plate 713 adjusts the maximum opening of corresponding second discharge leaf valve 712a.

In the compressor, the first discharge communication path 118 is by communication path 118a, the first discharge intercommunicating pore before first Communication path 118c is formed before communication path 118b and the 3rd before 690d, second.In addition, the second discharge communication path 120 is by the Communication path 120b is formed after communication path 120a, the second discharge intercommunicating pore 710d and second after one.

In addition, in the compressor, the first suction chamber 127a passes through the first communication path 137a and first with swash plate room 330 Suck intercommunicating pore 690c and communicate with each other, the second suction chamber 127b passes through the second communication path 137b and second with swash plate room 330 Suck intercommunicating pore 710c and communicate with each other.Therefore, the pressure in the first suction chamber 127a and the second suction chamber 127b and swash plate room Pressure in 330 is substantially identical.In addition, the low pressure refrigerant gas through evaporator are flowed into swash plate room via entrance 330a In 330.Therefore, it is corresponding in corresponding pressure in swash plate room 330 and the first suction chamber 127a and the second suction chamber 127b Pressure less than first discharge chamber 129a and second discharge room 129b in corresponding pressure.

Drive shaft 30 is made up of drive shaft main body 300, the first supporting member 143a and the second supporting member 143b.Drive shaft Main body 300 extends to rear side and from boss 117a is inserted through the first sliding bearing 122a and the backward from the front side of housing 10 Two sliding bearing 122b.Therefore, drive shaft main body 300 and and then drive shaft 30 is that be axially supported to by housing 10 can Around driving axial direction O2 rotations.The front end of drive shaft main body 300 is located in boss 117a.The rear end of drive shaft main body 300 In projecting to stilling chamber 131.

In addition, in drive shaft main body 300, being provided with swash plate 50, linkage 70 and actuator 160.Swash plate 50, company Linkage 70 and actuator 160 are separately positioned in swash plate room 330.

First supporting member 143a is press fit upon the front of drive shaft main body 300 and positioned at the first axis hole 121b In.In addition, in the first supporting member 143a, being formed with the flange 430 being in contact with the first thrust bearing 135a.At first In bearing member 143a, attachment (not shown) is formed with, the second pin 147b as described below is inserted through the attachment.Separately Outward, the front end of (the first back-moving spring 144a is fixed to the first supporting member 143a.(the first back-moving spring 144a in axial direction O2 Extend towards swash plate room 330 from the first supporting member 143a.

As shown in Figure 10, the second supporting member 143b is press fit upon the rear end side of drive shaft main body 300 and is located at In second axis hole 123b.The flange being in contact with the second thrust bearing 135b is formed with the front end of the second supporting member 143b 431.In addition, being provided with O-ring 73a and 73b in the second supporting member 143b.

As shown in Figure 8, swash plate 50 is formed as annular flat shape, and including preceding surface 50a and rear surface 50b. Preceding surface 50a is towards the front of compressor in swash plate room 330.In addition, surface 50b is towards compressor after in swash plate room 330 Rear.

Swash plate 50 is fixed to ring flat-plate 145.Ring flat-plate 145 is formed as annular flat shape.The shape in the core of ring flat-plate 145 Into there is patchhole 145a.Drive shaft main body 300 is inserted through patchhole 145a in swash plate room 330, thus that swash plate 50 is attached It is connected to drive shaft 30.

Linkage 70 includes protruded arm 149.Protruded arm 149 is arranged to be located further forward simultaneously than swash plate 50 in swash plate room 330 And between the supporting member 143a of swash plate 50 and first.Protruded arm 149 is formed as with generally L-shaped from front to rear end side Shape.Counterweight part 149a is formed with the rear end side of protruded arm 149.Counterweight part 149a is in the circumferential direction along actuator 160 Extend on nearly half circumference.It is noted that the shape of counterweight part 149a can be designed as needed.

The rear end side of protruded arm 149 is connected to a side of ring flat-plate 145 by the first pin 147a.Therefore, protruded arm 149 Rear end side is relative to ring flat-plate 145 --- i.e., swash plate 50 --- a side by using can be around the axis as the first pin 147a First pivot axis M1 is pivotally supported.First pivot axis M1 is along the direction orthogonal with the axial direction O2 of drive shaft 30 Extend.

The front of protruded arm 149 is connected to the first supporting member 143a by the second pin 147b.Therefore, protruded arm 149 Front relative to the first supporting member 143a --- i.e., drive shaft 30 --- by using can around as second pin 147b axle Second pivot axis M2 of line is pivotally supported.Second pivot axis M2 prolongs in the way of parallel to the first pivot axis M1 Stretch.Linkage 70 is sold the pins of 147a and second 147b by protruded arm 149 and first and constituted.

Counterweight part 149a is arranged at the rear end side of protruded arm 149, i.e. pivoted with second relative to the first pivot axis M1 Axis M2 opposite side.Therefore, because protruded arm 149 is supported on ring flat-plate 145 by the first pin 147a, therefore counterweight Portion 149a is positioned rearward by the groove portion 145b of ring flat-plate 145 relative to ring flat-plate 145, i.e. be positioned at the rear surface 50b of swash plate 50 Rear.The centrifugal force produced by rotation due to swash plate 50 around axial direction O2 also acts on the rear surface in swash plate 50 On counterweight part 149a at the rear side of 50b.

In the compressor, swash plate 50 and drive shaft 30 connect, thus, swash plate 50 and drive shaft by linkage 70 30 can rotate together.In addition, the two ends of protruded arm 149 pivot rotating around the first pivot axis M1 and the second pivot axis M2, Thus, swash plate 50 can change inclination angle.

Corresponding piston 90 includes the first head 90a positioned at front and including the second head positioned at rear end side 90b.Corresponding first head 90a is housed into and can reciprocally moved in corresponding first cylinder holes 121a.Corresponding first pressure Contracting room 121d is defined in corresponding first cylinder holes 121a by corresponding first head 90a and corresponding first valve forming board 139. Corresponding second head 90b is housed into and can reciprocally moved in corresponding second cylinder holes 123a.Corresponding second discharge chambe 123d is defined in corresponding second cylinder holes 123a by corresponding second head 90b and corresponding second valve forming board 141.

In addition, being formed with junction surface 90c at the middle part of corresponding piston 90.Half is provided with corresponding junction surface 90c Spherical piston shoes 110a and 110b.The rotation of swash plate 50 is converted into the reciprocating motion of piston 90 by piston shoes 110a and 110b.It is sliding Boots 110a and 110b correspond to the switching mechanism in the present invention.In this way, in the compressor, corresponding first head 90a With the second head 90b can with the stroke that the inclination angle of swash plate 50 is corresponding in corresponding first cylinder holes 121a and the second cylinder holes Reciprocally moved in 123a.As shown in Figure 11, in the compressor, when the inclination angle of swash plate 50 reduces, the second head 90b Top dead center position compared to the first head 90a top dead center position movement it is more.

Actuator 160 is arranged in swash plate room 330.Actuator 160 is positioned at rear and can enter relative to swash plate 50 Enter the inner side of the second recess 123c.As shown in Figure 10, actuator 160 includes movable body 160a, limits body 160b and control Pressing pressure room 160c.Control pressure room 160c is formed between movable body 160a and restriction body 160b.

Movable body 160a includes interior sliding part 161, bottom wall 162, periphery wall 163 and connection part 164.Interior sliding part 161 Positioned at the rear end of movable body 160a.Drive shaft main body 300 is inserted through interior sliding part 161.Therefore, interior sliding part 161 with It is slidably disposed in drive shaft main body 300.O-ring 73c is provided with interior sliding part 161.Bottom wall 162 is removable The rear end of kinetoplast 160a extends from the rear end of periphery wall 163 towards drive shaft main body 300.Bottom wall 162 and the phase of interior sliding part 161 Connection.In axial direction O2 extends periphery wall 163 from the end of bottom wall 162 towards front end.Therefore, periphery wall 163 be formed as with Axial direction O2 concentric cylindrical shape.As shown in Figure 8, connection part 164 is formed at the front end of periphery wall 163.

As shown in Figure 10, the disk that body 160b is formed as having the diameter roughly the same with the internal diameter of periphery wall 163 is limited Shape shape.The central side for limiting body 160b is provided with fixed part 165.Drive shaft main body 300 is press-fitted in fixed part 165 In, thus fixed part 165 is fixed together with drive shaft 30.In addition, being provided with O in the outer peripheral surface for limiting body 160b Type circle 73d.It is noted that limit body 160b can be can be arranged in drive shaft 30 in the way of in axial direction O2 is moved.

If Fig. 8 is as shown in, be provided with second back-moving spring 144b between body 160b and ring flat-plate 145 limiting.Specifically, The rear end of second back-moving spring 144b is fixed to restriction body 160b.The front end of second back-moving spring 144b is fixed to ring flat-plate 145 Another side.

Drive shaft main body 300 is inserted through sliding part 161 and fixed part 165 in as described above, thus in movable body In the state of 160a is placed in the second recess 123c, movable body 160a is disposed over swash plate 50 and and linkage 70 is relative.On the other hand, body 160b is limited to be arranged in movable body 160a than swash plate 50 more posteriorly.Limit the outer of body 160b Peripheral surface is surround by periphery wall 163.Therefore, control pressure room 160c be formed at movable body 160a with limit body 160b it Between.Control pressure room 160c is separated by movable body 160a and restriction body 160b with swash plate room 330.

As shown in Figure 10, it is formed with throttle orifice 75 in restriction body 160b.Throttle orifice 75 is from control pressure room 160c directions Swash plate room 330 extends.More specifically, throttle orifice 75 is extended into being inclined upwardly towards swash plate room 330 from control pressure room 160c, make Obtain the inwall 163a and restriction body for being supplied to periphery wall 163 from the lubricant of the discharge of throttle orifice 75 together with refrigerant gas Slipper between 160b.Control pressure room 160c is communicated with each other with swash plate room 330 by throttle orifice 75.

As shown in Figure 8, the another side of ring flat-plate 145 is connected to the connection part of movable body 160a by the 3rd pin 147c 164.Therefore, ring flat-plate 145 --- i.e., swash plate 50 --- another side by movable body 160a by using can be around as The effect axis M3 of the axis of three pin 147c is pivotally supported.Effect axis M3 is with parallel to the first pivot axis M1 and the The mode of two pivot axis M2 extends.In this way, movable body 160a is connected to swash plate 50.

In addition, in drive shaft main body 300, be formed with axial direction O2 from rear end towards the axially extending path in front 30a and radially extend from the front end of axial path 30a and lead to drive shaft main body 300 outer peripheral surface footpath To path 30b.Stilling chamber 131 is led in the rear end of axial path 30a.On the other hand, radial path 30b leads to control pressure Room 160c.Therefore, control pressure room 160c is connected by radial path 30b and axial path 30a with stilling chamber 131.

Threaded portion 30d is formed with the top end of drive shaft main body 300.Drive shaft 30 is connected to via threaded portion 30d Pulley or electromagnetic clutch not shown in figure.

As shown in Figure 9, controlling organization 150 is by low-pressure channel 150a, high-pressure channel 150b, low-pressure control valve 150c, height Pressure control valve 150d, axial path 30a, radial path 30b and throttle orifice 75 as described above are constituted.

Low-pressure channel 150a is connected to the suction chamber 127b of stilling chamber 131 and second.Therefore, control pressure room 160c, The suction chamber 127b of stilling chamber 131 and second by low-pressure channel 150a, axial path 30a and radial path 30b each other Connection.Leakage path in the present invention is formed by low-pressure channel 150a, axial path 30a, radial path 30b and throttle orifice 75.

High-pressure channel 150b is connected to the discharge of stilling chamber 131 and second room 129b.Control pressure room 160c, pressure are adjusted Discharge room 129b in section room 131 and second is communicated with each other by high-pressure channel 150b, axial path 30a and radial path 30b.This Feed path in invention is formed by high-pressure channel 150b, axial path 30a and radial path 30b.

Low-pressure control valve 150c is provided with low-pressure channel 150a.Low-pressure control valve 150c can be based on the second suction chamber Pressure in 127b adjusts the aperture of low-pressure channel 150a.In addition, being provided with high pressure control valve in high-pressure channel 150b 150d.High pressure control valve 150d can adjust the aperture of high-pressure channel 150b based on the pressure in the second suction chamber 127b.

In the compressor, it is connected to the pipe of evaporator and is connected with the entrance 330a shown in Fig. 8.It is connected to condenser Pipe 126 be connected with outlet.Condenser is connected to evaporator via pipe and expansion valve.

In the compressor of construction as described above, drive shaft 30 rotates, and thus, swash plate 50 rotates and piston 90 is first Reciprocally moved in cylinder holes 121a and the second cylinder holes 123a.Therefore, according to piston stroke in the first discharge chambe 121d and second There is capacity in discharge chambe 123d to change.Therefore, compressor is repeatedly carried out for refrigerant gas to be drawn into the first compression Suction stroke in room 121d and the second discharge chambe 123d, for being compressed in the first discharge chambe 121d and the second discharge chambe 123d The compression travel of refrigerant gas, the refrigerant gas for that will compress are expelled to the discharges of first discharge chamber 129a and second room Discharge stroke of 129b etc..

The refrigerant gas for being discharged to first discharge chamber 129a converge discharge by the first discharge arrival of communication path 118 Room 128.Similarly, the refrigerant gas for being discharged to the second discharge room 129b reach remittance by the second discharge communication path 120 Close discharge room 128.The refrigerant gas that arrival converges discharge room 128 are expelled to condenser from outlet 126.

When suction stroke etc. is performed, the piston compression force that the inclination angle for making swash plate 50 reduces is in including swash plate 50th, ring flat-plate 145, protruded arm 149 and first sell 147a on interior rotary body.In addition, in the compressor, as in the above It is the same in described compressor, in the case where the inclination angle of swash plate 50 changes, can be by increase and the stroke of reduction piston 90 To perform volume controlled.

Specifically, in controlling organization 150, the high pressure control valve 150d shown in Fig. 9 performs opening for high-pressure channel 150b Degree regulation, the pressure in stilling chamber 131 is increased from there through the refrigerant gas in the second discharge room 129b, and and then Pressure in increase control pressure room 160c.In addition, the aperture regulation of low-pressure channel 150a is performed by low-pressure control valve 150c, Thus reduce the pressure in the 160c of control pressure room.

In addition, in the compressor, as in the above compressor, the refrigerant in the 160c of control pressure room Gas is discharged to swash plate room 330 via throttle orifice 75.In this way, in the compressor, by high-pressure channel 150b and low The corresponding aperture regulation of pressure control valve 150c and eject regulation control pressure via the refrigerant gas of throttle orifice 75 Pressure in the 160c of room.

Herein, if high pressure control valve 150d make high-pressure channel 150b aperture reduce or low-pressure control valve 150c make it is low The aperture increase of pressure passageway 150a, then the pressure in the 160c of control pressure room reduces.In this case, as described above, control Refrigerant gas in the 160c of pressing pressure room are discharged to swash plate room 330 via throttle orifice 75.Therefore, control pressure room 160c In pressure reduce, and pressure differential between control pressure room 160c and swash plate room 330 reduces.Therefore, as shown in Figure 11, In actuator 160, by acting on the piston compression stress on swash plate 50, movable body 160a courts in the second recess 123c Move forwards.

Therefore, the another side of the another side of ring flat-plate 145, i.e. swash plate 50 is pivoted along clockwise direction around effect axis M3 The urgent pressure of second back-moving spring 144b is resisted simultaneously.In addition, the rear end of protruded arm 149 around the first pivot axis M1 along clockwise Direction pivots.The front end of protruded arm 149 pivots in the counterclockwise direction around the second pivot axis M2.Therefore, protruded arm 149 is close to The flange 430 of one supporting member 143a.Therefore, swash plate 50 is to act on axis M3 as application point and with the first pivot axis M1 as fulcrum in the case of pivot.Therefore, inclination angle of the swash plate 50 relative to the axial direction O2 of drive shaft 30 reduces.Piston 90 stroke reduces.Therefore, in the compressor, the discharge capacity that drive shaft 30 often rotates a circle reduces.It is noted that Figure 11 Shown in the inclination angle of swash plate 50 be minimal tilt angle in the compressor.

Herein, in the compressor, act on the centrifugal force on counterweight part 149a and be also applied to swash plate 50.Therefore, exist In the compressor, swash plate 50 is easy to be shifted along the direction for reducing the inclination angle of swash plate 50.

In addition, the inclination angle of swash plate 50 reduces, thus, ring flat-plate 145 is in contact with the rear end of (the first back-moving spring 144a.Cause This, is resiliently deformed (the first back-moving spring 144a.The rear end of (the first back-moving spring 144a is close to the first supporting member 143a.

Herein, in the compressor, the inclination angle of swash plate 50 reduces and the stroke of piston 90 reduces, thus, second The top dead center position of portion 90b moves away from the second valve forming board 141.Therefore, in the compressor, when the inclination corner connection of swash plate 50 During nearly zero degree, squeeze operation is slightly performed in the first discharge chambe 121d.On the other hand, do not held in the second discharge chambe 123d Row squeeze operation.

On the other hand, if the high pressure control valve 150d shown in Fig. 9 makes the aperture of high-pressure channel 150b increase or low Pressure control valve 150c reduces the aperture of low-pressure channel 150a, then the pressure increase in the 160c of control pressure room.Control pressure Pressure differential increase between room 160c and swash plate room 330.In this case, as described above, refrigeration in the 160c of control pressure room Agent gas is discharged to swash plate room 330 via throttle orifice 75.Therefore, as shown in Figure 8, in actuator 160, movable body 160a is moved in the second recess 123c while resistant function is in piston compression stress on swash plate 50 towards rear.

Therefore, it is interior to rear dragging swash plate in swash plate room 330 by connection part 164 along effect axis M3, movable body 160a 50 another side.Therefore, the another side of swash plate 50 is pivoted in the counterclockwise direction around effect axis M3.In addition, protruded arm 149 Rear end pivoted in the counterclockwise direction around the first pivot axis M1.The front end of protruded arm 149 is around the second pivot axis M2 along up time Pin direction pivots.Therefore, protruded arm 149 is separated with the flange 430 of the first supporting member 143a.Therefore, swash plate 50 is respectively Using act on axis M3 and the first pivot axis M1 as in the case of application point and fulcrum along in opposite direction with what inclination angle reduced Direction pivot.Therefore, the stroke of inclination angle increase of the swash plate 50 relative to the axial direction O2 of drive shaft 30 and piston 90 Increase.Therefore, the discharge capacity increase that drive shaft 30 often rotates a circle.It is noted that the inclination angle of the swash plate 50 shown in Fig. 8 It is the allowable angle of inclination in the compressor.

As described above, in the compressor, when the pressure in adjusting control pressure room 160c, except high-pressure channel 150b Outside the corresponding aperture regulation of low-pressure control valve 150c, refrigerant gas by from the inside of control pressure room 160c via section Discharge orifice 75 is expelled to swash plate room 330.Therefore, in the compressor, when the pressure in adjusting control pressure room 160c, it is not necessary to complete Control pressure room 160c is sealed entirely.Only just it is enough to seal control pressure room 160c by O-ring 73c and 73d.

In addition, in the compressor, even if the refrigerant gas in lubricant in the second discharge room 129b are introduced into In the case of being flowed into together with refrigerant gas when in the 160c of control pressure room in the 160c of control pressure room, lubricant remain to Refrigerant gas are expelled to swash plate room 330 from the inside of control pressure room 160c via throttle orifice 75 together.Therefore, as The same in compressor in implementation method 1, in the compressor, lubricant is less prone to reside in the 160c of control pressure room. The situation of the lubricant starvation in swash plate room 330 is less prone to be occurred.

Herein, as shown in Figure 10, in the compressor, throttle orifice 75 is extended into from control pressure room 160c towards swash plate Room 330 is inclined upwardly so that the lubricant from the discharge of throttle orifice 75 together with refrigerant gas is supplied in periphery wall 163 Slipper between wall 163a and restriction body 160b.Therefore, in the compressor, when the inclination angle of swash plate 50 is from minimum state During increase, i.e. when movable body 160a is moved rearwards by the second recess 123c, from throttle orifice together with refrigerant gas The lubricant of 75 outflows is lubricated to the inner side of periphery wall 163.Herein, in periphery wall 163, limit the front side of body 160b with Swash plate room 330 connects.In the compressor, the inwall 163a of periphery wall 163 is suitably lubricated by lubricant.Cause This, periphery wall 163 can suitably be slided in the outer peripheral surface for limiting body 160b.Therefore, in the compressor, Neng Gou Suitably change the discharge capacity that drive shaft 30 often rotates a circle in for a long time.

(implementation method 6)

As shown in Figure 12, in the compressor in implementation method 6, the pressure in the alternate embodiments 5 of throttle orifice 77 is set Throttle orifice 75 in contracting machine.Throttle orifice 77 is formed in the bottom wall 162 in movable body 160a.Throttle orifice 77 is from control pressure room 160c extends towards the second thrust bearing 135b so that the lubricant from the discharge of throttle orifice 77 together with refrigerant gas is supplied to To the second thrust bearing 135b.Therefore, control pressure room 160c and swash plate room 330 are communicated with each other by throttle orifice 77.At this In compressor, the leakage path in the present invention is by low-pressure channel 150a, axial path 30a, radial path 30b and the shape of throttle orifice 77 Into.Miscellaneous part in the compressor is identical with the part in the compressor in implementation method 5.

In the compressor, when the pressure in adjusting control pressure room 160c, except high-pressure channel 150b and low pressure control Outside the corresponding aperture regulation of valve 150c processed, refrigerant gas by from the inside of control pressure room 160c via the row of throttle orifice 77 Go out to swash plate room 330.Herein, in the compressor, throttle orifice 77 is from control pressure room 160c towards the second thrust bearing 135b Extend and cause that the lubricant from the discharge of throttle orifice 77 together with refrigerant gas is supplied to the second thrust bearing 135b.Therefore, In the compressor, when movable body 160a is moved rearwards by the second recess 123c, the profit in the 160c of control pressure room Lubrication prescription is discharged from throttle orifice 77 together with refrigerant gas towards the second thrust bearing 135b.Herein, in the compressor, can Moving body 160a is moved rearwards by the second recess 123c, and thus, movable body 160a and the second thrust bearing 135b are gradually Approach.Therefore, in the compressor, second thrust bearing 135b can be entered by the lubricant discharged from throttle orifice 77 Row suitably lubricates.Therefore, in the compressor, it is less prone to sting glutinous in the second thrust bearing 135b, and can Improve durability.Other kinds of effect is identical with the effect in the compressor in implementation method 5 in the compressor.

Above according to implementation method 1 to implementation method 6, the present invention is described.However, the invention is not restricted to implement Mode 1 is to implementation method 6.Self-evidently, can change as needed in the case of without departing substantially from idea of the invention with And the application present invention.

For example, compressor can be combined to structure as desired by the compressor in implementation method 1 to implementation method 4 Make.In addition, compressor can be combined to structure by the compressor in the compressor in implementation method 5 and implementation method 6 Make.

Furthermore it is possible to substitute low-pressure control valve 15c and 150c and high pressure control valve 15d and 150d using triple valve. In this case, triple valve corresponds to the control valve in the present invention.High pressure control valve 15d and 150d can be provided only on high pressure In passage 15b and 150b.

In addition, in compressor in implementation method 5 and implementation method 6, compressor may be configured so that discharge chambe only It is formed in one of the first cylinder body 121 and the second cylinder body 123.

Claims

1. a kind of variable displacement type tilted-plate compressor, including：

Housing, is formed with suction chamber, discharge room, swash plate room and cylinder holes in the housing；

Drive shaft, the drive shaft is rotatably supported by the housing；

Swash plate, the swash plate can rotate according to the rotation of the drive shaft in the swash plate room；

Linkage, the linkage is arranged between the drive shaft and the swash plate and is configured to allow for the swash plate Relative to the change with the inclination angle in the direction of the axis vertical take-off of the drive shaft；

Piston, the piston is housed into the cylinder holes can reciprocally be moved；

Switching mechanism, the switching mechanism be configured to according to the rotation of the swash plate make the piston in the cylinder holes with The stroke corresponding with the inclination angle is reciprocally moved；

Actuator, the actuator can change the inclination angle；And

Controlling organization, the controlling organization is configured to be controlled the actuator, wherein, the swash plate room with it is described Suction chamber is connected,

The actuator includes：

Body is limited, the restriction body is arranged in the drive shaft in the swash plate room；

Movable body, the axial direction that the movable body can be along the drive shaft in the swash plate room is moved；And

Control pressure room, the control pressure room limits body and the movable body limits and is configured to pass through by described Internal pressure in the control pressure room moves the movable body,

The variable displacement type tilted-plate compressor is characterised by that the controlling organization includes：

Feed path, the feed path is connected with the discharge room and the control pressure room, and by the discharge room Refrigerant be incorporated into the control pressure room；And

Leakage path, the leakage path is connected with the control pressure room and the swash plate room, and by the control pressure The refrigerant in room is expelled to the swash plate room,

The leakage path includes：

Communication path, the communication path is formed at least one of the movable body and the restriction body, also, institute State communication path and lubricant is expelled to the swash plate room together with the refrigerant from the control pressure room.

2. variable displacement type tilted-plate compressor according to claim 1, wherein,

The restriction body includes outer sliding part, and the outer sliding part extends and with can along the axial direction of the drive shaft The mode of slip is around the movable body；

The movable body includes：

First cylindrical portion, first cylindrical portion is set around the drive shaft near the swash plate；

Second cylindrical portion, second cylindrical portion is formed as enlarged-diameter into the bigger cylinder of the diameter than first cylindrical portion Shape shape；And

Connecting portion, the connecting portion connects first cylindrical portion and second cylindrical portion, and

The communication path is formed in second cylindrical portion or the connecting portion so that from described together with the refrigerant The lubricant of communication path discharge is supplied to the slipper between the movable body and the outer sliding part.

3. variable displacement type tilted-plate compressor according to claim 1, wherein,

The restriction body is fixed to the drive shaft,

Thrust bearing is provided between the restriction body and the housing, the thrust bearing receives to act on the drive shaft On thrust,

Journal bearing is provided between the housing and the drive shaft, the journal bearing receives to act on the drive shaft On radial load,

Shaft sealer is provided between the housing and the drive shaft, the shaft sealer ensures the interior of the housing Sealing between portion and outside, and

The communication path is formed in the restriction body so that from the institute of communication path discharge together with the refrigerant State lubricant and be supplied to the thrust bearing, the journal bearing or the shaft sealer.

4. variable displacement type tilted-plate compressor according to claim 1, wherein,

The movable body include periphery wall and bottom wall, the periphery wall along the drive shaft the axial direction extend and Around the restriction body while being slided relative to the restriction body, the bottom wall is from the periphery wall towards the drive shaft Extend, and

The communication path is formed in the restriction body so that from the institute of communication path discharge together with the refrigerant State the slipper that lubricant is supplied between the periphery wall and the restriction body.

5. variable displacement type tilted-plate compressor according to claim 1, wherein,

The movable body include periphery wall and bottom wall, the periphery wall along the drive shaft the axial direction extend and Around the restriction body while being slided relative to the restriction body, the bottom wall is from the periphery wall towards the drive shaft Extend,

Thrust bearing is provided between the movable body and the housing, the thrust bearing receives to act on the driving Thrust on axle, and

The communication path is formed in the movable body so that from communication path discharge together with the refrigerant The lubricant is supplied to the thrust bearing.