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1. 发明专利

JP2001020857A CONTROL VALVE FOR VARIABLE DISPLACEMENT TYPE COMPRESSOR 失效
公开(公告)号：JP2001020857A
公开(公告)日：2001-01-23
申请号：JP18997999
申请日：1999-07-05
申请人： TOYODA AUTOMATIC LOOM WORKS , SAGINOMIYA SEISAKUSHO INC
发明人： MIZUFUJI TAKESHI , NISHIMURA KENTA , INEJI KENJI , MATSUBARA AKIRA , KANEKO MORIO , OGAWARA ICHIRO
IPC分类号： F04B49/00 , F04B27/14 , F04B27/18
摘要： PROBLEM TO BE SOLVED: To prevent the increase of the number of parts and the number of installation processes and besides to prevent complication of passage structure. SOLUTION: A ball valve element 37 is provided to open and close communication passages 32, 34, and 33 to execute intercommunication between the suction port of a compressor and a crank chamber. The ball valve element 37 is energized in an opening direction through the spring force of a compression coil spring 44 and a bellows device 40 is provided to drive the ball valve element 37 in an opening direction resultant from application of the suction pressure of the compressor. The ball valve element 37 and the bellows device 40 are directly interconnected with the ball valve element 37 forming an automatic centripetal ball. A valve housing 31 is joined at its one end with the ball valve element 37 and a discharge pressure introduction hollow pipe body 49 is provided to directly exert the discharge pressure of the compressor in the opening direction of the ball valve element 37. A compression coil spring 50 energizes the ball valve element 37 through the discharge pressure introduction hollow pipe body 49.

2. 发明专利

JPH10318155A ELECTROMAGNETIC CONTROL VALVE 失效
公开(公告)号：JPH10318155A
公开(公告)日：1998-12-02
申请号：JP5835398
申请日：1998-03-10
申请人： TOYODA AUTOMATIC LOOM WORKS , SAGINOMIYA SEISAKUSHO INC
发明人： KAWAGUCHI MASAHIRO , MIZUFUJI TAKESHI , MURASE MASAKAZU , MORISHITA ATSUSHI , OKADA TOMOO
IPC分类号： F04B49/06 , F04B27/14 , F04B49/00 , F16K31/06
摘要： PROBLEM TO BE SOLVED: To perform accurate control with weak electromagnetic force, by detecting the difference between the inner-crankcase pressure and the suction pressure with a piston, and by operating a valve member, which controls the refrigerant flow from the high-pressure compressor delivery side to a crankcase side, using this pressure difference. SOLUTION: An electromagnetic control valve 1-1 consists of a control valve part 1a and an electromagnetic proportional controlling part 1b. A valve body 17 is divided into an upper part 17a, an intermediate part 17b, and a lower part 17c, and a valve seat 17d is formed on the upper part 17a. In the lower part 17c of the valve body, a piston 12-1a which has a pore 12-1b in its upper part and a U-shaped cross section is placed on a lower-piston space 17g which communicates with a suction side of a compressor, so that the upper part of the piston faces a guide hole 17h of the inner-crankcase pressure Pc of the valve body. The piston 12-1a detects the pressure difference between Pc and the suction pressure Ps, and the pressure difference drives a valve which controls the flow from the high-pressure side (delivery pressure Pd) to a pressure control room (Pc).

3. 发明专利

JPH09296876A ELECTROMAGNETIC CONTROL VALVE 失效
公开(公告)号：JPH09296876A
公开(公告)日：1997-11-18
申请号：JP10979796
申请日：1996-04-30
申请人： TOYODA AUTOMATIC LOOM WORKS , SAGINOMIYA SEISAKUSHO INC
发明人： KAWAGUCHI MASAHIRO , SONOBE MASANORI , MIZUFUJI TAKESHI , KUBO YUJI , OGAWARA ICHIRO , OKADA TOMOO
IPC分类号： F16K31/06 , F04B39/10 , F04B49/06
摘要： PROBLEM TO BE SOLVED: To reduce any load in the time of starting as well as to facilitate a valve characteristic variation by fully opening this valve in time of nonenergizing of a magnetic coil, making compressor discharge side pressure act on the upper and lower sides of a valve element, and altering the diameter of a compensation pin installed in space between a discharge side pressure inlet port and a pressure sensitive regulator. SOLUTION: In time of nonenergizing of a magnetic coil 15, downward energizing force of a plunger spring 4 working on a valve part 8 is smaller than the upward energizing force of a valve spring 9, so that a valve 1 is fully opened. At that time, a compressor is in a state of full-unload operation, whereby a bellows 11 is contracted, and thus the underside of a valve stem 8b separates from a compensation pin 10. When being energized with current, a connecting rod 6 goes down according to a current value and thereby the valve 1 is closed. Then, compressor discharge side pressure acts on the upper and lower sides of a valve element 8a after passing through an internal equalizing hole 17g, and the valve 1 operates irrespective of a pressure differential between the discharge side of a compressor and the inside of a room. At that time, since the compensation pin 10 makes its compensating froce work on the bellows 11, a diameter of this compensation pin 10 is clanged, thereby changing a valve characteristic.

4. 发明专利

JP2000320465A CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR 失效
公开(公告)号：JP2000320465A
公开(公告)日：2000-11-21
申请号：JP12836299
申请日：1999-05-10
申请人： SAGINOMIYA SEISAKUSHO INC , TOYODA AUTOMATIC LOOM WORKS
发明人： KANEKO MORIO , OGAWARA ICHIRO , OTA MASAKI , MIZUFUJI TAKESHI , NISHIMURA KENTA , ATAYA HIROSHI
IPC分类号： F04B49/00 , F04B27/08 , F04B27/18
摘要： PROBLEM TO BE SOLVED: To simplify structure with superior reliability in opening and closing operation of a valve element, to prevent the increase of the number of item parts and the number of assembling processes, and basides to prevent complication of passage structure, in a control valve to perform control of capacity related to outside air load. SOLUTION: A control valve for a variable displacement compressor comprises a ball valve element 38 for opening and closing an communication passage 34 to effect communication between the suction port and the crank chamber of a compressor, a spring to energize the ball valve element 38 in a closing direction, and a diaphragm device 43 to drive the ball valve element 38 in a closing direction by exerting the suction pressure of the compressor on a diaphragm chamber 49. The spring is formed of an ordinary spring material and constituted through combination of a main spring 54 to energize the ball valve element 38 in the closing direction and a correction spring 55 formed of a temperature-sensitive material, having positive characteristics to an outside air temperature and exerting a force in the direction in which the spring force of the main spring 54 is offset thereby. A spring force in a closing direction is decreased accompanying the increase in the outside air temperature representative of the outside air load.

5. 发明专利

JP2000320464A CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR 失效
公开(公告)号：JP2000320464A
公开(公告)日：2000-11-21
申请号：JP12836199
申请日：1999-05-10
申请人： SAGINOMIYA SEISAKUSHO INC , TOYODA AUTOMATIC LOOM WORKS
发明人： KANEKO MORIO , OGAWARA ICHIRO , OTA MASAKI , MIZUFUJI TAKESHI , SONOBE MASANORI , TARUYA TOMOJI
IPC分类号： F04B49/00 , F04B27/14 , F04B27/18
摘要： PROBLEM TO BE SOLVED: To perform control of capacity correlated to an outside air load by a method, wherein the problem on lowering a crank chamber pressure during a low discharge pressure is dissolved without increasing a pressure loss during a high discharge pressure and control valve characteristics are caused to match with compressor characteristics. SOLUTION: A main valve 39 to open and close a communication passage to perform intercommunication between the suction port and the crank chamber of a compressor is situated in a valve housing 31. The main valve 39 is driven by a balance relation between the spring force of a compression coil spring 52, to effect energization in a closing direction and the suction pressure of the compressor exerted on a diaphragm chamber 47. A leak flow rate control valve 53 increases a leak flow rate flowing to a crank chamber from the discharge port of the compressor, when the discharge pressure of the compressor is lower than a discharge pressure exerted on a closing direction, the control valve being situated in the valve housing 31. A correction spring 58 for energizing the main valve 39 in the opening direction is provided between the main valve 39 and the leak flow rate control valve 53. The spring load of the correction spring 58 is increased, along with the movement in the closing direction of the flow control valve 53.

6. 发明专利

JPH07189904A CLUTCHLESS HALF SIDE PISTON TYPE VARIABLE CAPACITY COMPRESSOR 失效
公开(公告)号：JPH07189904A
公开(公告)日：1995-07-28
申请号：JP33213993
申请日：1993-12-27
申请人： TOYODA AUTOMATIC LOOM WORKS , SAGINOMIYA SEISAKUSHO INC
发明人： KAWAGUCHI MASAHIRO , SONOBE MASANORI , MIZUFUJI TAKESHI , YOKONO TOMOHIKO , KANEKO MORIO , OGAWARA ICHIRO
IPC分类号： F04B27/14 , F04B27/08 , F04B35/00
摘要： PURPOSE:To provide a clutchless compressor for preventing repercussion of large load torque to a vehicle engine in small driving force condition. CONSTITUTION:A supplying port 65b on a valve housing 65 constituting a bypass opening/closing valve 64 in a discharging chamber 3b is communicated with a crank chamber 2a through a swash plate inclining angle change passage 66. A ball valve 67 is maintained in a position for normally blocking a valve hole 65c by the spring force of a reset spring 69. A first pressure chamber P1 and a second pressure chamber P2 which are partitioned by a piston 71 are communicated with each other by a clearance K. The displacement of the piston 71 is transmitted to the ball valve 67 through a displacement transmission rod 73. The first pressure chamber P1 is communicated with the discharging chamber 3b through a passing port 65e and a discharging pressure leading port 65a.

7. 发明专利

JPH10318414A ELECTROMAGNETIC CONTROL VALVE 失效
公开(公告)号：JPH10318414A
公开(公告)日：1998-12-04
申请号：JP12991297
申请日：1997-05-20
申请人： TOYODA AUTOMATIC LOOM WORKS , SAGINOMIYA SEISAKUSHO INC
发明人： KAWAGUCHI MASAHIRO , MIZUFUJI TAKESHI , NAGAI HIROYUKI , SONOBE MASANORI , OKADA TOMOO , OGAWARA ICHIRO , IKEDA TADAAKI
IPC分类号： F04B27/18 , F16K27/02 , F16K31/06
摘要： PROBLEM TO BE SOLVED: To improve control stability by lessening the hysteresis in an electromagnetic actuator part by pressing in and fixing one end of a guide pin in a hole in the center of a coil guide, and providing a guide hole in the center of a plunger in order to shift the plunger along the guide pin. SOLUTION: In an electromagnetic control valve 1-1 applied to a capacity control mechanism or the like of a capacity variable compressor, one end of a guide pin 60 is pressed and fixed in a hole 3b provided in the center of a coil guide 3 so that a plunger 5, forming a part of an electromagnetic actuator controlling the opening of a valve element 80 by a current value fed to an electromagnetic coil 15, shifts the center of a suction part 70 in keeping a clearance nonconnecting with a plunger tube 16. Then a guide hole 5a is provided in a center of the plunger 5 in order to shift the plunger 5 along the guide pin 60. With this constitution, the hysteresis in the electromagnetic actuator part decreases, whereby control stability in the electromagnetic control valve 1-1 is improved.

8. 发明专利

JP2000345961A CAPACITY CONTROL VALVE 失效
公开(公告)号：JP2000345961A
公开(公告)日：2000-12-12
申请号：JP15939599
申请日：1999-06-07
申请人： TOYODA AUTOMATIC LOOM WORKS , TOYODA AUTOMATIC LOOM WORKS , NOK CORP
发明人： MIZUFUJI TAKESHI , KAWAGUCHI MASAHIRO , OTA MASAKI , MATSUBARA AKIRA , WATANABE YOSHIKI , NISHINOSONO HIROYUKI
IPC分类号： F04B49/06 , F04B27/14 , F04B27/18 , F04B49/00 , F16K31/06
摘要： PROBLEM TO BE SOLVED: To provide a composite control valve for variable displacement type compressor with an intake valve part having a simple structure capable of providing a main air supply passage which can be opened and closed by control outside and a supplemental air supply passage for compensating shortage of blow-by gas when the main air supply passage is substantially closed. SOLUTION: An intake valve part V2 disposed between an exhaust valve part V1 and a solenoid part V3 is provided with a rod insertion passage 52 in which an operating rod 80 is disposed in a vertically movable manner. The operating rod 80 includes a valve body part 84 having an outer diameter approximating to an inner diameter d1 of the rod insertion passage 52. The rod insertion passage 52 functions as a main air supply passage when the valve body part 84 leaves the rod insertion passage 52. Although the rod insertion passage 52 is almost filled when the valve body part 84 gets into the rod insertion passage 52, a slight clearance between an internal surface of the rod insertion passage 52 and an outer surface of the valve body part 84 functions as a supplemental air supply passage.

9. 发明专利

JP2000249051A CONTROL VALVE FOR VARIABLE DISPLACEMENT SWASH PLATE TYPE COMPRESSOR 失效
公开(公告)号：JP2000249051A
公开(公告)日：2000-09-12
申请号：JP5249599
申请日：1999-03-01
申请人： TOYODA AUTOMATIC LOOM WORKS , TOYODA AUTOMATIC LOOM WORKS
发明人： MIZUFUJI TAKESHI , ATAYA HIROSHI , KURAKAKE HIROTAKA , MATSUBARA AKIRA , OTA MASAKI
IPC分类号： F04B49/00 , F04B27/14 , F04B27/18
摘要： PROBLEM TO BE SOLVED: To facilitate assembly by simplifying valve structure while employing high pressure correction structure, in the internal control valve of a variable displacement swash plate type compressor. SOLUTION: An actuating body 54 fixed at a diaphragm (a pressure-sensitive body) 57 displaceable according to a suction pressure Ps is contained in a valve housing 60. An actuating body 54 comprises a valve element part 51 formed at its tip part; a rod part 52; and a sleeve-type high pressure correction part 53 fitted externally on the rod part. The high pressure correction part 53 transmits a change of a discharge pressure Pd to the diaphragm 57. The diameter of actuating body 54 is stepwise increased from a tip part (on the valve element part 51 side) toward a base end part (on the high pressure correction part 53 side). This constitution facilitates manufacture of the actuating body 54 and assembly to a valve housing 60.

10. 发明专利

JP2000220576A CONTROL VALVE FOR VARIABLE DISPLACEMENT COMPRESSOR 失效
公开(公告)号：JP2000220576A
公开(公告)日：2000-08-08
申请号：JP2144099
申请日：1999-01-29
申请人： TOYODA AUTOMATIC LOOM WORKS , TOYODA AUTOMATIC LOOM WORKS
发明人： MIZUFUJI TAKESHI , OTA MASAKI , ATAYA HIROSHI , MATSUBARA AKIRA
IPC分类号： F04B49/00 , F04B27/14 , F04B27/18 , F16K17/06 , F16K31/06
摘要： PROBLEM TO BE SOLVED: To simplify the structure of a control valve in carrying out the OFF- side control and the ON-side control of the compressor of a variable displacement swash plate type by one control valve. SOLUTION: Inside the valve housing 51 of a control valve 51, an opening/ closing valve mechanism 60 for controlling the opening/closing of an air supply passage 28 for communicating a discharge chamber 22 with a crank chamber 5, and an adjust valve mechanism 70 for optionally adjusting the opening degree of an air extracting passage 27 for communicating a suction chamber 21 with the crank chamber 5 are incorporated to operate independently of each other. One coil 85 is shared b the first plunger 82 of the opening/closing valve mechanism and the second plunger 83 of the adjust valve mechanism. An adjust valve body 73 and a pressure sensitive member (bellows) 76 constituting the adjust valve mechanism are arranged in the same chamber 71, to which suction pressure Ps is applied.

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