WO2009150959A1 - 可変容量圧縮機 - Google Patents
可変容量圧縮機 Download PDFInfo
- Publication number
- WO2009150959A1 WO2009150959A1 PCT/JP2009/060036 JP2009060036W WO2009150959A1 WO 2009150959 A1 WO2009150959 A1 WO 2009150959A1 JP 2009060036 W JP2009060036 W JP 2009060036W WO 2009150959 A1 WO2009150959 A1 WO 2009150959A1
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- WO
- WIPO (PCT)
- Prior art keywords
- swash plate
- urging
- variable capacity
- capacity compressor
- inclination angle
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/14—Control
- F04B27/16—Control of pumps with stationary cylinders
- F04B27/18—Control of pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
- F04B27/1804—Controlled by crankcase pressure
Definitions
- the present invention relates to a swash plate type variable displacement compressor, and more particularly to a variable displacement compressor suitable for use in a vehicle air conditioner or the like having an improved structure of an urging means for urging the swash plate in the direction of increasing the tilt angle.
- a swash plate type variable capacity compressor in order to easily increase the discharge capacity of the swash plate by returning the tilt angle of the swash plate to the increasing direction from when the swash plate is in the minimum tilt state, the swash plate is located near the minimum tilt position
- an urging means an inclination increasing spring or a return spring for urging in an inclination increasing direction
- the inclination-increasing spring is originally intended to return the capacity from the minimum inclination, but for example, with the advent of a clutchless compressor, the biasing force of the inclination-increasing spring has stopped the operation of the compressor ( Since the power consumption in the vicinity of the minimum inclination angle is also affected, the adjustment of the urging force is important.
- an inclination increasing spring (in particular, an inclination increasing spring such as the return spring 27 of Patent Document 1) has a biasing force that changes proportionally (linearly) in accordance with the amount of bending, and therefore, The biasing force of the tilt-increasing spring to the swash plate changes proportionally according to the tilt angle, but fine adjustment of the biasing force according to the tilt angle of the swash plate can be made only by changing this biasing force proportionally. Have difficulty.
- the object of the present invention is to pay attention to the above-mentioned problems in the prior art, expand the degree of freedom of adjustment of the urging force of the swash plate inclination increasing urging means with a simple structure, and according to the inclination angle of the swash plate. It is an object of the present invention to provide a variable capacity compressor capable of finely adjusting the urging force.
- a variable capacity compressor includes a housing in which a discharge chamber, a suction chamber, a crank chamber, and a cylinder bore are defined, a piston disposed in the cylinder bore, A drive shaft rotatably supported in the housing; and a conversion mechanism including a variable tilt swash plate that converts the rotation of the drive shaft into a reciprocating motion of the piston, and the pressure between the crank chamber and the suction chamber
- a variable capacity compressor that adjusts the stroke of the piston by changing the difference and compresses the fluid sucked into the cylinder bore from the suction chamber and discharges the fluid into the discharge chamber, one end abuts the swash plate
- a plurality of urging means for urging the swash plate in the direction of increasing the inclination angle are provided, and the plurality of urging means are configured such that the urging number increases as the inclination angle of the swash plate decreases. It consists those characterized by being.
- the urging force of the urging means can be increased as the inclination angle of the swash plate decreases, and the urging force against the swash plate can be increased, and the urging force corresponding to the inclination angle of the swash plate can be increased.
- the degree of freedom of adjustment is expanded.
- the adjustment of the urging force of the urging means for urging the swash plate in the direction of increasing the inclination angle can be optimized.
- the individual urging means may have a simple configuration, so that the plurality of urging means as a whole should be configured in a simple structure. Is possible.
- the length of the urging means in the compressor axial direction can be shortened, and by providing a plurality of urging means, the length in the compressor axial direction can be reduced. Is not increased.
- the plurality of urging means are configured such that the urging force increases proportionally as the inclination angle of the swash plate decreases.
- the gradient of the urging force increase by the plurality of urging means can be increased.
- the urging force increases in proportion, it is easy to adjust the urging force.
- the gradient of the increase of the urging force can be increased as the number of urgings increases, the urging force can be finely adjusted.
- connection means which connects the said several biasing means integrally.
- the connecting means since the plurality of urging means are integrally connected by the connecting means, it is possible to handle them as one integrated member, which facilitates assembly and improves productivity. To do.
- a positioning structure for positioning the connecting means in the axial direction of the drive shaft is formed on the connecting means and the drive shaft, and at least two of the plurality of biasing means have an axial height from the connecting means. It can also be set as the structure set so that may differ. In such a configuration, the axial position of the connecting means is determined by the positioning structure, and the axial height of at least two urging means among the plurality of urging means is different based on the positioned connecting means. The urging number of the urging means can be changed more accurately and reliably according to the inclination angle of the swash plate.
- the plurality of urging means include, for example, a leaf spring, and the leaf spring is formed by press molding from a leaf spring forming material that forms the leaf spring, and the rest of the leaf spring forming material other than the leaf spring is It can also be set as the structure by which the connection means is formed.
- the leaf spring and the connecting means can be formed from a single member, the leaf spring and the connecting means can be formed substantially simultaneously by pressing, which facilitates manufacture and contributes to cost reduction. Can do.
- the connecting means and the plurality of urging means are formed so as to surround the drive shaft, and the plurality of urging means urge the tip of the swash plate in a direction of increasing the inclination at a predetermined interval.
- the base end portion may be integrally connected to the connecting means.
- the connecting means is formed so as to surround the drive shaft, and a plurality of urging means can be arranged around the drive shaft at a predetermined interval. It becomes possible to arrange compactly. Therefore, the entire biasing means portion can be reduced in size and the structure can be simplified.
- At least two of the plurality of biasing means may be configured to have different spring constants.
- this configuration is applied to a case where a plurality of urging means are made of leaf springs, the degree of freedom in adjusting the spring characteristics of the leaf springs is expanded, and the adjustment of the urging force can be optimized more easily. .
- the minimum inclination defining means for defining the mechanical minimum inclination of the swash plate, and the minimum inclination defining means is integrally connected to the connecting means.
- the urging force of the urging means can be managed on the basis of the minimum inclination angle, and variation in the urging force between the urging means can be reduced.
- the minimum tilt angle defining means can also serve as a regulating means for regulating excessive deflection of the urging means, it is possible to prevent excessive stress from acting on the urging means, and the reliance of the urging means. It can contribute to ensuring the safety.
- variable capacity compressor according to the present invention is particularly suitable when the fluid to be compressed is made of a refrigerant, and is particularly suitable as a compressor used in a vehicle air conditioner.
- variable capacity compressor of the present invention a plurality of urging means for urging the swash plate in the direction of increasing the inclination angle are provided, and the urging number is increased as the inclination angle of the swash plate is decreased.
- the degree of freedom in adjusting the biasing force of the biasing means for increasing the swash plate tilt angle can be increased, and fine adjustment of the biasing force can be made according to the tilt angle of the swash plate.
- the adjustment of the urging force of the urging means for urging the swash plate in the inclination increasing direction can be optimized, and the swash plate can perform a desired operation near the minimum inclination angle.
- FIG. 1 (A) It is a longitudinal cross-sectional view (FIG. 1 (A)) of the variable capacity compressor which concerns on one embodiment of this invention, and sectional drawing (FIG. 1 (B)) of the capacity
- FIG. 1 (B) It is a longitudinal cross-sectional view of the capacity control valve shown in FIG.
- plate spring in the variable capacity compressor of FIG. 1 is shown
- FIG. 3 (A) is a front view of a leaf
- FIG.3 (B) is a side view of FIG. 3 (A).
- FIG. 3 (A) It is a partial expanded sectional view of the variable capacity compressor of FIG. 1 which shows the state which the swash plate is contacting the stopper.
- FIG. 1 (A) The leaf
- FIG. 3 (A) is a front view of a leaf
- FIG.3 (B) is a side
- FIG. 4 is a relationship diagram between a spring displacement amount and a spring force of the leaf spring of FIG. 3.
- FIG. 4 is a relationship diagram between a resultant force of a coil spring and a leaf spring and a swash plate inclination angle when the leaf spring of FIG. 3 is used. It is a related figure of the resultant force of a coil spring and a leaf
- FIG. 1 shows a variable capacity compressor (FIG. 1A) and a capacity control valve (FIG. 1B) for controlling the capacity according to an embodiment of the present invention.
- a variable capacity swash plate compressor 100 as a variable capacity compressor includes a cylinder block 101 having a plurality of cylinder bores 101a, a front housing 102 provided at one end of the cylinder block 101, and a valve plate 103. And a rear housing 104 provided at the other end of the cylinder block 101.
- a drive shaft 106 is disposed across the crank chamber 105 defined by the cylinder block 101 and the front housing 102.
- the drive shaft 106 is inserted through the swash plate 107.
- the swash plate 107 is coupled to a rotor 108 fixed to the drive shaft 106 via a connecting portion 109, and is supported so as to be able to rotate together with the drive shaft 106 and to change the tilt angle with respect to the drive shaft 106.
- a coil spring 110 is disposed between the rotor 108 and the swash plate 107 to urge the swash plate 107 in the direction of decreasing the tilt angle.
- a plate spring 111 for urging the swash plate 107 in the minimum tilt state in the direction of increasing the tilt angle is disposed.
- the plate spring 111 is configured as a member having a plurality of plate spring portions 111a1, 111a2, and 111a3 as urging means for urging the swash plate 107 in the direction of increasing the inclination angle in the present invention.
- One end of the drive shaft 106 extends to the outside of the housing through the boss portion 102a of the front housing 102, and is connected to a drive source such as a vehicle engine (not shown) via a belt or the like via a power transmission device (not shown). ing.
- a shaft seal device 112 is disposed between the drive shaft 106 and the boss portion 102a.
- the drive shaft 106 is supported in the radial direction and the thrust direction by bearings 113, 114, 115, and 116.
- a piston 117 is disposed in the cylinder bore 101a, and a pair of shoes 118 housed in a recess 117a at one end of the piston 117 sandwich the outer peripheral portion of the swash plate 107 so as to be slidable relative to each other.
- the rotation of the drive shaft 106 is converted into a reciprocating motion of the piston 117 via the swash plate 107 and the shoe 118.
- a suction chamber 119 and a discharge chamber 120 are formed in the rear housing 104.
- the suction chamber 119 communicates with the cylinder bore 101a via a suction hole 103a formed in the valve plate 103 and a suction valve (not shown), and the discharge chamber 120 includes a discharge valve (not shown) and a discharge hole 103b formed in the valve plate 103. Is communicated with the cylinder bore 101a.
- the suction chamber 119 is connected to an evaporator of a vehicle air conditioner (not shown) through a suction port 104a.
- Front housing 102, cylinder block 101, valve plate 103, and rear housing 104 cooperate to drive shaft 106, rotor 108, connecting portion 109, swash plate 107, shoe 118, piston 117, cylinder bore 101a, intake valve, discharge valve.
- a housing for accommodating a compression mechanism formed by a valve or the like is formed.
- a muffler 121 is disposed outside the cylinder block 101.
- the muffler 121 is formed by joining a bottomed cylindrical lid member 122 separate from the cylinder block 101 to a cylindrical wall 101b erected on the outer surface of the cylinder block 101 via a seal member.
- a discharge port 122 a is formed in the lid member 122.
- the discharge port 122a is connected to a condenser of a vehicle air conditioner (not shown).
- a communication passage 123 that allows the muffler 121 to communicate with the discharge chamber 120 is formed across the cylinder block 101, the valve plate 103, and the rear housing 104.
- the muffler 121 and the communication passage 123 form a discharge passage extending between the discharge chamber 120 and the discharge port 122a, and the muffler 121 forms an expansion space arranged in the middle of the discharge passage. Yes.
- a check valve 200 for opening and closing the inlet of the muffler 121 is disposed in the muffler 121.
- the front housing 102, the cylinder block 101, the valve plate 103, and the rear housing 104 are adjacent to each other via a gasket (not shown), and are integrally assembled using a plurality of through bolts.
- the capacity control valve 300 is attached to the rear housing 104.
- the capacity control valve 300 adjusts the opening of the communication passage 124 between the discharge chamber 120 and the crank chamber 105, and controls the amount of refrigerant gas discharged into the crank chamber 105.
- the refrigerant gas in the crank chamber 105 is sucked through a gap between the bearings 115 and 116 and the drive shaft 106, a space 125 formed in the cylinder block 101, and an orifice hole 103 c formed in the valve plate 103. Flows into chamber 119.
- the capacity control valve 300 adjusts the energization amount to the built-in solenoid based on the external signal, and the internal pressure of the suction chamber 119 introduced into the pressure sensing chamber of the capacity control valve 300 via the communication path 126 becomes a predetermined value.
- the discharge capacity of the variable capacity swash plate compressor 100 is variably controlled, and the communication path 124 is forcibly opened by turning off the energization of the built-in solenoid. Control to the minimum.
- the capacity control valve 300 can optimally control the suction pressure according to the external environment.
- the capacity control valve 300 is formed in the valve housing 301 and has a first pressure sensing chamber 302 communicating with the crank chamber 105 through the communication hole 301 a, and one end opened to the first pressure sensing chamber 302.
- the valve hole 301c having the other end opened to the valve chamber 303 communicating with the discharge chamber 120 through the communication hole 301b, one end disposed in the valve chamber 303 opens and closes the valve hole 301c, and the other end is a support hole.
- a cylindrical valve body 304 slidably supported by 301d and the first pressure sensing chamber 302 are disposed, and the crank chamber pressure is received through the communication hole 301a, the inside is evacuated, and a spring is disposed.
- a bellows assembly 305 that functions as a pressure-sensitive means, a connection portion 306 in which the bellows assembly 305 is detachably connected to one end and the other end is fixed to one end of the valve body 304, and the other end of the valve body 304 is Through the communication hole 301e It includes a second pressure sensing chamber 307 which communicates with the suction chamber 119, a.
- the valve housing 301 is formed with a support hole 301d that slidably supports the other end portion of the valve body 304, and the valve body 304 is supported by the support hole 301d so as to be slidable with a minute gap. The other end is blocked from the valve chamber 303.
- the displacement control valve 300 further includes a solenoid rod 304a integrally formed with the valve body 304 and having a movable iron core 308 press-fitted and fixed to an end portion separated from the valve body 304, and the solenoid rod 304a inserted therein, and the movable iron core is separated by a predetermined gap.
- a fixed iron core 309 disposed opposite to the 308, a spring 310 disposed between the fixed iron core 309 and the movable iron core 308 and biasing the movable iron core 308 in the valve opening direction, and the fixed iron core 309 and the movable iron core 308 are connected to each other.
- a cylindrical member 312 made of a non-magnetic material that is inserted and fixed to the solenoid case 311, and an electromagnetic coil 313 that surrounds the cylindrical member 312 and is accommodated in the solenoid case 311.
- the suction chamber pressure Ps when the suction chamber pressure Ps is lower than the value represented by the above equation (1), the bellows 305a is extended, the valve body 304 is separated from the valve seat, and the valve hole 301c is opened.
- the first pressure sensing chamber 302 and the valve chamber 303 are communicated with each other through the valve hole 301c, and the communication passage 124 between the discharge chamber 120 and the crank chamber 105 is opened.
- the refrigerant in the discharge chamber 120 is supplied to the crank chamber 105 through the communication path 124, the crank chamber pressure increases, the inclination angle of the swash plate 107 decreases, the discharge capacity of the variable capacity compressor 100 decreases, and the suction chamber pressure.
- the suction chamber pressure Ps when the suction chamber pressure Ps is lower than the value represented by the above equation (1), the bellows 305a is extended, the valve body 304 is separated from the valve seat, and the valve hole 301c is opened.
- the first pressure sensing chamber 302 and the valve chamber 303
- the bellows of the bellows assembly 305 contracts, the valve body 304 comes into contact with the valve seat, closes the valve hole 301c, and the first pressure sensing chamber 302 is closed.
- the communication passage 124 between the discharge chamber 120 and the crank chamber 105 is closed by blocking communication between the valve chamber 303 and the valve chamber 303 via the valve hole 301c.
- the refrigerant gas in the crank chamber 105 is sucked through the gaps between the bearings 115 and 116 and the drive shaft 106, the space 125 formed in the cylinder block 101, and the orifice hole 103 c formed in the valve plate 103.
- a pressure-sensitive mechanism constituted by the bellows assembly 305, the connecting portion 306, and the valve body 304 autonomously controls the suction chamber pressure to a value represented by the formula (1).
- the electromagnetic actuator composed of the solenoid rod 304a, the movable iron core 308, the fixed iron core 309, the spring 310, the solenoid case 311, the cylindrical member 312 and the electromagnetic coil 313 is operated in accordance with the current value i flowing through the electromagnetic coil 313. Change the operating point.
- the capacity control valve 300 a control characteristic is obtained in which the suction chamber pressure decreases as the energization amount i to the electromagnetic coil 313 increases.
- the pressure sensing mechanism and the electromagnetic actuator drive the valve body 304. Since the capacity control valve 300 has a pressure sensing mechanism, the control accuracy of the suction chamber pressure is improved, and by having an electromagnetic actuator that changes the operating point of the pressure sensing mechanism, the control current i is uniquely controlled. It becomes possible to determine the suction chamber pressure.
- valve body 304 opens the valve hole 301c by the biasing force of the spring 310, and the refrigerant in the discharge chamber 120 is supplied to the crank chamber 105 through the communication passage 124, and the crank chamber pressure is increased. Increases, the inclination angle of the swash plate 107 decreases, and the discharge capacity of the variable capacity compressor 100 is minimized.
- the leaf spring 111 includes three leaf spring portions 111a1, 111a2, 111a3, three stoppers 111b and three leaf spring portions 111a1, 111a2 in the circumferential direction. , 111a3 and an annularly formed connecting portion 111c that connects the three stoppers 111b are integrally connected. That is, the leaf spring 111 is composed of three leaf spring portions 111 a 1, 111 a 2, 111 a 3 as a plurality of urging means for urging the swash plate 107 in the inclination increasing direction according to the present invention, and the swash plate 107 mechanically.
- Three stoppers 111b as minimum inclination defining means for defining the minimum inclination angle are configured as a member integrally connected by a connecting portion 111c as a connecting means.
- the plate spring 111 is formed by press molding from a plate spring forming material (plate spring forming plate), and a stopper 111b and a connecting portion 111c are formed on the remaining portions other than the plate spring portions 111a1, 111a2, and 111a3. Note that the three leaf spring portions 111 a 1, 111 a 2, and 111 a 3 are arranged at substantially equal intervals around the drive shaft 106.
- the leaf spring 111 is inserted into the drive shaft 106 through the inner diameter side portion 111 d (shown in FIG. 3A) of the connecting portion 111 c and abuts against a step formed on the drive shaft 106. It is positioned in the axial direction and fixed by a snap ring 150.
- the minimum inclination angle ( ⁇ min) of the swash plate 107 that is mechanically regulated is defined. For example, as shown in FIG.
- the minimum inclination angle ( ⁇ min) is approximately 0 ° (an angle near 0 °) when the state in which the surface of the swash plate 107 is orthogonal to the axis of the drive shaft 106 is 0 °.
- the heights of the three stoppers 111b are set aiming at the minimum inclination angle ( ⁇ min).
- the urging force for urging the swash plate 107 in the direction of increasing the inclination acts by the front end side of each of the leaf spring portions 111a1, 111a2, 111a3 coming into contact with the swash plate 107, but the leaf spring portions 111a1, 111a2, 111a3
- the inclination angle of the swash plate 107 whose front end abuts on the swash plate 107 is set to be different depending on each plate spring. As shown in FIG. 3B, this can be reliably achieved by setting the axial heights of the tips of the leaf spring portions 111a1, 111a2, and 111a3 from the connecting portion 111c to be different (h1> h2). > H3).
- the tip of the stopper 111b is also managed by the height from the connecting portion 111c, variation in the urging force of the leaf spring 111 from the minimum inclination angle is reduced. Since the stopper 111b also serves as a restricting means for restricting excessive bending of the leaf spring portions 111a1, 111a2, and 111a3, excessive stress is not applied to the leaf spring portions 111a1, 111a2, and 111a3.
- the urging force of the leaf spring 111 is, for example, as shown in FIG.
- the leaf spring 111 is pressed by a pressing body having a pressing surface equal to or larger than the outer diameter of the leaf spring 111 (when the pressing body abuts on the leaf spring portion 111a1, the displacement is 0).
- the leaf spring portion 111a1 functions as a spring and the urging force increases proportionally.
- the leaf spring portion 111a2 also abuts and the urging force of the leaf spring portion 111a2 is applied, and the inclination of the urging force increase ( (Gradient) increases.
- the leaf spring portion 111a3 is also brought into contact and the urging force of the leaf spring portion 111a3 is applied, and the gradient of the urging force increase is further increased. That is, there is a characteristic that the spring constant increases stepwise as the number of biases by the leaf spring portion increases. Therefore, by setting x1 and x2 to appropriate positions, the load characteristics can be adjusted and the urging force can be optimized.
- ⁇ 1 When the swash plate 107 becomes smaller than a predetermined angle ⁇ 1 , the swash plate 107 is sandwiched between the coil spring 110 and the plate spring 111, and the resultant force of both springs is as shown in FIG. 6, during the ⁇ 1 ⁇ ⁇ 2 are only leaf springs 111a1 functions as a spring, between the theta 2 ⁇ theta 3 acts leaf springs 111a1 and 111a2 as a spring, between theta 3 ⁇ .theta.min is All the leaf springs 111a1, 111a2, and 111a3 function as springs.
- ⁇ 4 is an angle at which the resultant force of both springs becomes zero.
- the leaf spring portions 111a1, 111a2, and 111a3 having different heights from the connecting portion 111c are sequentially brought into contact with the swash plate 107, and the urging number is sequentially increased.
- a biasing force that biases the swash plate 107 in the direction of increasing the tilt angle it is possible to have desirable characteristics that are finely adjusted.
- each leaf spring portion is set to be different, but the height of each leaf spring portion is set to be the same and a step is provided on the swash plate side where each leaf spring portion abuts.
- the number of biases may be increased sequentially as the inclination angle of the swash plate decreases. If it does in this way, formation of a leaf spring part will become easy.
- FIG. 7 shows an example of a spring resultant force characteristic when there are two urging means
- FIG. 8 shows an example of the spring resultant force characteristic when there are four urging means, and the urging number is determined in consideration of optimization of the urging force adjustment. do it.
- the plurality of biasing means are not limited to leaf springs.
- a compression coil spring may be disposed around the drive shaft, one end may be brought into contact with the swash plate, and the other end may be connected by a connecting portion.
- the drive shaft may be inserted into a plurality of concentric compression coil springs, one end abutted against the swash plate, and the other end connected by a connecting portion.
- the plurality of leaf spring portions 111a1, 111a2, and 111a3 are formed in the circumferential direction of the drive shaft as shown in FIG. It is not limited.
- the tip of each leaf spring may be formed so as to face the axis of the drive shaft, or may be formed away from the drive shaft.
- a rotation prevention structure should be provided so that the leaf spring 111 does not rotate with respect to the drive shaft 106.
- the swash plate support is biased by the leaf spring portions 111a1, 111a2, and 111a3. It can also be.
- the present invention can be applied to a variable capacity compressor or a clutchless compressor equipped with an electromagnetic clutch, or a variable capacity compressor driven by a motor, for example, a variable capacity compressor with a built-in motor. You can also
- the fluid to be compressed is a refrigerant
- other fluids to be compressed may be used.
- the type of refrigerant as the fluid to be compressed is not particularly limited, and the present invention is commonly applied to variable capacity compressors corresponding to carbon dioxide and other new refrigerants in addition to the case of using R134a as the refrigerant. Is possible.
- variable capacity compressor can be applied to any compressor having a swash plate with a variable tilt angle, and is particularly suitable as a variable capacity compressor used in a vehicle air conditioner.
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Abstract
Description
図1は、本発明の一実施態様に係る可変容量圧縮機(図1(A))と、その容量を制御するための容量制御弁(図1(B))を示している。図1において、可変容量圧縮機としての可変容量斜板式圧縮機100は、複数のシリンダボア101aを備えたシリンダブロック101と、シリンダブロック101の一端に設けられたフロントハウジング102と、バルブプレート103を介してシリンダブロック101の他端に設けられたリアハウジング104とを備えている。
Ps=〔-(1/Sb)・F(i)+(F+f)/Sb〕・・・(1)
ここで、
Ps:吸入室の圧力
Sb:ベローズ有効面積(=弁体に作用するクランク室の圧力受圧面積(Sv)=弁体に作用する吸入室の圧力受圧面積(Sr))
f:ばね310の付勢力
F:ベローズ付勢力
F(i):電磁力
である。
本実施態様では、板バネ111は、図3、図4に示すように、周方向に3箇所の板バネ部111a1、111a2、111a3、3箇所のストッパ111bおよび3箇所の板バネ部111a1、111a2、111a3と3箇所のストッパ111bを連結する環状に形成された連結部111cが一体に連結されたものである。すなわち、この板バネ111は、本発明における、斜板107を傾角増大方向に付勢する複数の付勢手段としての3箇所の板バネ部111a1、111a2、111a3と、斜板107の機械的な最小傾角を規定する最小傾角規定手段としての3箇所のストッパ111bとを、連結手段としての連結部111cにより一体に連結した部材として構成されている。この板バネ111は、板バネ形成材(板バネ形成板)からプレス成形によって形成され、各板バネ部111a1、111a2、111a3以外の残部にストッパ111bと連結部111cが形成されている。なお、3箇所の板バネ部111a1、111a2、111a3は駆動軸106の周囲にほぼ等間隔に配置されている。
101 シリンダブロック
101a シリンダボア
102 フロントハウジング
103 バルブプレート
104 リアハウジング
105 クランク室
106 駆動軸
107 斜板
108 ロータ
109 連結部
110 コイルバネ
111 複数の付勢手段を有する板バネ
111a1、111a2、111a3 斜板を傾角増大方向に付勢する付勢手段としての板バネ部
111b 斜板の機械的な最小傾角を規定する最小傾角規定手段としてのストッパ
111c 最小傾角規定手段と付勢手段との連結手段としての連結部
111d 連結部の内径側部分
117 ピストン
118 シュー
119 吸入室
120 吐出室
121 マフラ
122 蓋部材
123 連通路
150 スナップリング
200 逆止弁
300 容量制御弁
301 バルブハウジング
302 第1感圧室
303 弁室
304 弁体
304a ソレノイドロッド
305 ベローズ組立体
307 第2感圧室
308 可動鉄心
309 固定鉄心
311 ソレノイドケース
313 電磁コイル
Claims (11)
- 内部に吐出室、吸入室、クランク室およびシリンダボアが区画形成されたハウジングと、前記シリンダボア内に配設されたピストンと、前記ハウジング内に回転可能に支持された駆動軸と、前記駆動軸の回転を前記ピストンの往復運動に変換する傾角可変の斜板を含む変換機構とを備え、前記クランク室と前記吸入室との圧力差を変化させることにより前記ピストンのストロークを調整して前記吸入室から前記シリンダボアに吸入された流体を圧縮して前記吐出室に吐出する可変容量圧縮機において、前記斜板に一端が当接し、前記斜板を傾角増大方向に付勢する複数の付勢手段を具備し、前記複数の付勢手段は前記斜板の傾角が小さくなるに従い付勢数が増加するように構成されていることを特徴とする可変容量圧縮機。
- 前記複数の付勢手段は、それぞれ、前記斜板の傾角が小さくなるに従い比例的に付勢力が増大するように構成されており、前記付勢数が増加することにより、前記複数の付勢手段による付勢力の増大の勾配が大きくなる、請求項1に記載の可変容量圧縮機。
- 前記複数の付勢手段を一体に連結する連結手段を具備している、請求項1に記載の可変容量圧縮機。
- 前記連結手段を前記駆動軸の軸方向に位置決めする位置決め構造が前記連結手段および前記駆動軸に形成され、前記複数の付勢手段のうち少なくとも2つは前記連結手段からの軸方向高さが異なるように設定されている、請求項3に記載の可変容量圧縮機。
- 前記複数の付勢手段が板バネからなり、該板バネは該板バネを形成する板バネ形成材からプレス成形によって形成され、前記板バネ形成材の前記板バネ以外の残部に前記連結手段が形成されている、請求項3に記載の可変容量圧縮機。
- 前記複数の付勢手段のうち少なくとも2つはバネ定数が異なるように設定されている、請求項5に記載の可変容量圧縮機。
- 前記連結手段および前記複数の付勢手段は前記駆動軸を取り囲むように形成され、前記複数の付勢手段は所定の間隔を隔ててそれぞれ先端部が前記斜板を傾角増大方向に付勢するとともに、基端部は前記連結手段と一体に連結されている、請求項3に記載の可変容量圧縮機。
- 前記複数の付勢手段のうち少なくとも2つはバネ定数が異なるように設定されている、請求項7に記載の可変容量圧縮機。
- 前記斜板の機械的な最小傾角を規定する最小傾角規定手段を具備し、前記最小傾角規定手段は前記連結手段と一体連結されている、請求項3に記載の可変容量圧縮機。
- 被圧縮流体が冷媒からなる、請求項1に記載の可変容量圧縮機。
- 車両用空調装置に用いられる、請求項1に記載の可変容量圧縮機。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/997,244 US20110091334A1 (en) | 2008-06-11 | 2009-06-02 | Variable Displacement Compressor |
DE112009001435T DE112009001435T5 (de) | 2008-06-11 | 2009-06-02 | Kompressor variabler Verdrängung |
CN2009801223907A CN102057161A (zh) | 2008-06-11 | 2009-06-02 | 可变容量压缩机 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-152521 | 2008-06-11 | ||
JP2008152521A JP5222447B2 (ja) | 2008-06-11 | 2008-06-11 | 可変容量圧縮機 |
Publications (1)
Publication Number | Publication Date |
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WO2009150959A1 true WO2009150959A1 (ja) | 2009-12-17 |
Family
ID=41416670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2009/060036 WO2009150959A1 (ja) | 2008-06-11 | 2009-06-02 | 可変容量圧縮機 |
Country Status (5)
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US (1) | US20110091334A1 (ja) |
JP (1) | JP5222447B2 (ja) |
CN (1) | CN102057161A (ja) |
DE (1) | DE112009001435T5 (ja) |
WO (1) | WO2009150959A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102792025B (zh) * | 2010-03-16 | 2015-03-04 | 伊格尔工业股份有限公司 | 容量控制阀 |
JP5697022B2 (ja) * | 2010-12-14 | 2015-04-08 | サンデン株式会社 | 可変容量圧縮機 |
JP5907432B2 (ja) * | 2011-06-15 | 2016-04-26 | イーグル工業株式会社 | 容量制御弁 |
JP6495634B2 (ja) * | 2014-12-02 | 2019-04-03 | サンデンホールディングス株式会社 | 可変容量圧縮機 |
EP3604806B1 (en) | 2017-03-28 | 2022-05-25 | Eagle Industry Co., Ltd. | Capacity control valve |
US11536389B2 (en) | 2017-08-28 | 2022-12-27 | Eagle Industry Co., Ltd. | Electromagnetic valve |
WO2020204132A1 (ja) | 2019-04-03 | 2020-10-08 | イーグル工業株式会社 | 容量制御弁 |
EP4234997A3 (en) * | 2019-04-03 | 2023-10-11 | Eagle Industry Co., Ltd. | Capacity control valve |
CN113661322B (zh) | 2019-04-03 | 2023-06-23 | 伊格尔工业股份有限公司 | 容量控制阀 |
KR102634942B1 (ko) | 2019-04-24 | 2024-02-08 | 이구루코교 가부시기가이샤 | 용량 제어 밸브 |
US12031531B2 (en) | 2019-04-24 | 2024-07-09 | Eagle Industry Co., Ltd. | Capacity control valve |
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2008
- 2008-06-11 JP JP2008152521A patent/JP5222447B2/ja not_active Expired - Fee Related
-
2009
- 2009-06-02 WO PCT/JP2009/060036 patent/WO2009150959A1/ja active Application Filing
- 2009-06-02 DE DE112009001435T patent/DE112009001435T5/de not_active Ceased
- 2009-06-02 CN CN2009801223907A patent/CN102057161A/zh active Pending
- 2009-06-02 US US12/997,244 patent/US20110091334A1/en not_active Abandoned
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JPS631774A (ja) * | 1986-06-20 | 1988-01-06 | Toyota Autom Loom Works Ltd | 揺動斜板型圧縮機における吸入弁の自励振動防止機構 |
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JPH08159023A (ja) * | 1994-12-07 | 1996-06-18 | Toyota Autom Loom Works Ltd | クラッチレス可変容量型圧縮機 |
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Also Published As
Publication number | Publication date |
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JP5222447B2 (ja) | 2013-06-26 |
US20110091334A1 (en) | 2011-04-21 |
JP2009299516A (ja) | 2009-12-24 |
DE112009001435T5 (de) | 2011-05-05 |
CN102057161A (zh) | 2011-05-11 |
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