Patent application number | Description | Published |
20120134854 | Differential pressure control valve and variable displacement compressor having the differential pressure control valve - A differential pressure control valve has a valve seat made of magnetic material, a valve body having a lid made of magnetic material, and a guiding member. Fluid passes through a valve hole formed in the seat. The body on the downstream side of the seat separates from or is seated on the seat in accordance with the pressure difference between the upstream and downstream sides to selectively open and close the hole. The guiding member fixed to the seat guides the body. The lid is seated on the seat to close the hole. A guided member is made of nonmagnetic material. One of the seat and the lid has a permanent magnet. The body is urged in the direction approaching the seat by the force of the magnet located at a position outside the area where the body is seated on the seat. | 05-31-2012 |
20120247319 | SWASH PLATE TYPE VARIABLE DISPLACEMENT COMPRESSOR - A housing has a peripheral wall that surrounds a crank chamber. The peripheral wall has a valve chamber that is recessed radially inward from an outer surface of the peripheral wall with respect to the axis. A bimetal member, which deforms in correspondence with the temperature in the crank chamber, is arranged in the valve chamber. A valve body, which is supported by the bimetal member, is arranged in the valve chamber. The peripheral wall has a first oil discharge passage and allows communication between the crank chamber and the valve chamber, and a second oil discharge passage through which the valve chamber and a suction chamber communicate with each other. When the temperature in the crank chamber exceeds a predetermined value and deforms the bimetal member to move the valve body, communication between the first and second oil discharge passage is permitted through the valve chamber. | 10-04-2012 |
20120251347 | COMPRESSOR WITH TRANSMISSION - A compressor with a transmission includes a clutch that varies the rotational speed of an output shaft between two different speeds. The clutch includes a friction layer, which secures a ring roller by movement of the ring roller in a first direction (securing direction), a first control chamber, a first control piston accommodated in the first control chamber and movable in the direction of an input shaft axis, a first thrust bearing between the first control piston and the ring roller, a second control chamber facing the first control chamber, a second control piston accommodated in the second control chamber and movable in the direction of the axis), a second thrust bearing between the second control piston and the ring roller, and a pressure control mechanism, which controls a first control pressure supplied to the first control chamber and a second control pressure supplied to the second control chamber. | 10-04-2012 |
20130236342 | COMPRESSOR - A compressor has suction reed valves each of which includes a fixation portion fixed to the valve base plate, a basal portion that extends from the fixation portion and is separable from the plate, and a valve flap extending from the basal portion toward the distal end to selectively open and close the suction port. Each suction port has a shape elongated in the width direction, which is orthogonal to the longitudinal direction. The width of the basal portion is greater than that of the suction port. Each valve flap includes an opening-closing portion facing the corresponding suction port and stoppers, which project from the ends in the width direction. The side edges in the width direction are continuous from the stoppers to the basal portion to gradually approach the suction port. The cylinder block has pairs of recessed retainers. The stoppers contact the retainers. | 09-12-2013 |
20140127041 | SWASH PLATE TYPE VARIABLE DISPLACEMENT COMPRESSOR - A compressor includes an actuator. The actuator is arranged in a swash plate chamber, while being rotational integrally with a drive shaft. With reference to the swash plate, the actuator is located in a region in which a first cylinder bore is located. The actuator includes a rotation body fixed to the drive shaft, a movable body, and a control pressure chamber. A link mechanism is located between the drive shaft and the swash plate. As the inclination angle of the swash plate is changed, the link mechanism moves the top dead center position of a first head by a greater amount than the top dead center position of a second head. | 05-08-2014 |
20140127042 | SWASH PLATE TYPE VARIABLE DISPLACEMENT COMPRESSOR - In a compressor, a link mechanism, which allows change of the inclination angle of the swash plate, is arranged between the drive shaft and the swash plate. An actuator is arranged in a swash plate chamber, while being rotational integrally with a drive shaft. The actuator includes a rotation body, a movable body, and a control pressure chamber. The swash plate has a fulcrum, which is coupled to the link mechanism, and a point of application, which is coupled to the movable body. The drive shaft is located between the fulcrum and the point of application. | 05-08-2014 |
20140127043 | SWASH PLATE TYPE VARIABLE DISPLACEMENT COMPRESSOR - A compressor includes an actuator. The actuator is arranged in a swash plate chamber, while being rotational integrally with a drive shaft. The actuator includes a rotation body, a movable body, and a control pressure chamber. A control mechanism is provided that changes the pressure in the control pressure chamber to move the movable body. The movable body is arranged such that, when the pressure in the control pressure chamber is raised, the movable body pulls the swash plate to increase the inclination angle of the swash plate. | 05-08-2014 |
20140127044 | SWASH PLATE TYPE VARIABLE DISPLACEMENT COMPRESSOR - In a compressor according to the present invention, an actuator is arranged in a swash plate chamber in a manner rotatable integrally with a drive shaft. The actuator includes a rotation body, a movable body, and a control pressure chamber. A control mechanism includes a bleed passage, a supply passage, and a control valve. The control mechanism is capable of changing the pressure in the control pressure chamber to move the movable body. The movable body opposes the lug arm with a swash plate arranged between the movable body and the lug arm. | 05-08-2014 |
20140127045 | SWASH PLATE TYPE VARIABLE DISPLACEMENT COMPRESSOR - In a compressor according to the present invention, an actuator is arranged in a swash plate chamber in a manner rotatable integrally with a drive shaft. The actuator includes a rotation body, a movable body, and a control pressure chamber. A control mechanism includes a bleed passage, a supply passage, and a control valve. The control mechanism is capable of changing the pressure in the control pressure chamber to move the movable body. When the pressure in the control pressure chamber exceeds the pressure in the swash plate chamber, the inclination angle of the swash plate with respect to the rotation axis of the drive shaft increases. | 05-08-2014 |
20140294611 | VARIABLE DISPLACEMENT SWASH PLATE COMPRESSOR - A variable displacement swash plate compressor includes a housing, drive shaft, first and second radial bearings, swash plate, and actuator. The actuator includes a movable body and fixed body. The movable body includes a main portion and circumferential wall. The main portion includes an insertion hole. The housing includes an accommodation wall. A first clearance exists between the circumferential wall and fixed body. A second clearance exists between the drive shaft and wall of the insertion hole. A third clearance exists between the circumferential wall and accommodation wall. A fourth clearance exists between the drive shaft and first radial bearing. A fifth clearance exists between the drive shaft and second radial bearing. The first and second clearances differ in size. The sum of the third clearance and the smaller one of the first and second clearances is larger than the fourth and fifth clearances. | 10-02-2014 |
20140294612 | VARIABLE DISPLACEMENT SWASH PLATE COMPRESSOR - A variable displacement swash plate compressor is provided with a housing, a drive shaft, a swash plate, a link mechanism, a piston, a conversion mechanism, an actuator, and a control mechanism. The housing includes a suction chamber, a discharge chamber, a swash plate chamber, and a cylinder bore. The actuator includes a movable body coupled to the swash plate, a fixed body fixed to the drive shaft, and a control pressure chamber defined by the movable body and the fixed body. The movable body includes a circumferential wall extending in a direction along a rotational axis and surrounding the fixed body, which includes a guide portion projecting in an axial direction along an inner surface of the circumferential wall. The movable body contacts the guide portion to restrict inclination of the movable body relative to the drive shaft that is greater than or equal to a predetermined amount. | 10-02-2014 |
20140294613 | VARIABLE DISPLACEMENT SWASH PLATE COMPRESSOR - A variable displacement swash plate compressor that includes a cylinder bore, a swash plate chamber, a swash plate, and a double head piston, which defines first and second compression chambers in the cylinder bore. First and second suction chambers are in communication with the first and second compression chambers, respectively. The displacement of the top dead center of the piston in the first compression chamber is greater than the displacement of the top dead center of the piston in the second compression chamber. A first suction passage extends from a suction port to the first suction chamber without passing through the second suction chamber and the swash plate chamber. A second suction passage extends from the first suction chamber to the second suction chamber. | 10-02-2014 |
20140294614 | DOUBLE-HEADED PISTON SWASH PLATE TYPE COMPRESSOR - A double-headed piston swash plate type compressor includes a rotary shaft, a drive force transmitting member, a tiltable swash plate, a movable body that changes the inclination angle of the swash plate, and a control pressure chamber defined by the movable body and the drive force transmitting member, which are arranged on one side with respect to the swash plate in the axial direction of the rotary shaft. The movable body includes a bottom portion, through which the rotary shaft extends, and a cylindrical portion, which extends from the bottom portion in the axial direction of the rotary shaft to surround the rotary shaft. The cylindrical portion is permitted to move in the axial direction while sliding along a part of the drive force transmitting member, so that the inclination angle of the swash plate is changed in accordance with the internal pressure of the control pressure chamber. | 10-02-2014 |
20140294616 | VARIABLE DISPLACEMENT SWASH PLATE TYPE COMPRESSOR - A variable displacement swash plate type compressor includes a rotary shaft, a tiltable swash plate, a movable body that is coupled to the swash plate and changes the inclination angle of the swash plate, a link mechanism that permits the inclination angle of the swash plate to be changed, a first support portion provided to the movable body, a second support portion provided to the swash plate, and a first coupling member that couples the first and second support potions to each other. The second support portion is pivotally supported by the first coupling member. The swash plate has top and bottom dead center associated parts for positioning each piston at top and bottom dead centers, respectively. The top and bottom dead center associated parts are arranged with the rotary shaft in between. The second support portion is arranged between the top and bottom dead center associated parts. | 10-02-2014 |
20140369862 | DOUBLE-HEADED PISTON TYPE SWASH PLATE COMPRESSOR - A double-headed piston type swash plate compressor includes a swash plate, a double-headed piston, a control pressure chamber, a discharge pressure region, a suction pressure region, a supplying passage, which extends from the discharge pressure region to the control pressure chamber, a narrowing portion, which narrows an opening degree of the supplying passage, and a displacement control valve. The displacement control valve controls a pressure in the control pressure chamber. The displacement control valve includes a driving force transmission rod, a valve chamber, a guide wall, and a back pressure chamber. The back pressure chamber is in communication with the valve chamber through a clearance between the guide wall and the driving force transmission rod. The narrowing portion has a passage cross-sectional area that is larger than a passage cross-sectional area of the clearance. | 12-18-2014 |
20140377088 | VARIABLE DISPLACEMENT SWASH PLATE TYPE COMPRESSOR - A variable displacement swash plate type compressor having high controllability and capable of exhibiting high mounting performance and securing sufficient compression capacity is provided. | 12-25-2014 |
20150023810 | DOUBLE-HEADED PISTON TYPE SWASH PLATE COMPRESSOR - A double-headed piston type swash plate compressor includes first and second cylinder blocks, a rotation shaft, a double-headed piston, a crank chamber, a drive force transmission member, a swash plate, a movable body, a control pressure chamber, and a support. The control pressure chamber is defined by the movable body in the housing. The control pressure chamber moves the movable body in the axial direction of the rotation shaft. The support is located on the swash plate and supported by the rotation shaft. The drive force transmission member and the movable body are located at a first side of the swash plate in the axial direction of the rotation shaft, and the support is located at a second side of the swash plate. The drive force transmission member, the movable body, and the support set the inclination angle of the swash plate relative to the rotation shaft. | 01-22-2015 |
20150044065 | VARIABLE DISPLACEMENT SWASH PLATE TYPE COMPRESSOR - A variable displacement swash plate type compressor includes a displacement control valve. The displacement control valve includes a drive force transmitting member, a valve member having a first valve body, a valve chamber, which accommodates the first valve body, an accommodating chamber, which communicates with a control pressure chamber, a pressure sensing mechanism, which adjusts the valve opening degree of the first valve body, a communicating chamber, which is located on the opposite side of the pressure sensing mechanism from the valve chamber, and a second valve body, which is located in the pressure sensing mechanism and selectively opens and closes the communicating chamber. When the current supply to the electromagnetic solenoid is stopped and the pressure in the suction pressure zone in the communicating chamber is higher than a predetermined pressure, the pressure sensing mechanism contracts to open the second valve body. | 02-12-2015 |