Abstract: Provided is a variable-capacity compressor control valve that can effectively reduce sliding resistance while preventing Pd-Ps leakage and the inclination of a valve element, thus increasing controllability and operation stability, and can also avoid operation failures or troubles caused by foreign matter. A sliding portion of a main valve element that is slidably fitted and inserted into a guide hole provided in a valve body includes an upper small-clearance portion and a lower small-clearance portion in the opposite ends in a vertical direction thereof and a large-clearance portion between the upper small-clearance portion and the lower small-clearance portion. The upper small-clearance portion and the lower small-clearance portion each has a diameter Dx and a vertical length that is equal to or larger than a predetermined length. The large-clearance portion has a diameter Dy that is smaller than the Dx and a vertical length of 1 mm or larger.

Abstract: A variable-capacity compressor control valve that can efficiently cancel the influence of the refrigerant pressure acting on a main valve element and avoid increase in complexity of the structure and size of the control valve is provided. A pressure equalizing passage is provided which is adapted to guide a suction pressure Ps acting on the upper end of a main valve element to a Ps introduction chamber provided at the lower end of the main valve element so that the suction pressure Ps acts on the lower end of the main valve element. When an electromagnetic actuator or a solenoid portion thereof is not supplied with current i.e., when a valve orifice is fully open, the introduction of a pressure Pc in a crank chamber from Pc inlet/outlet ports into the Ps introduction chamber is stopped, and the suction pressure Ps is introduced into the Ps introduction chamber via the pressure equalizing passage so that the suction pressure Ps acts on the upper and lower ends of the main valve element.

Abstract: Provided is a variable-capacity compressor control valve that can cancel the influence of the refrigerant pressure acting on a main valve element without increasing the size of a valve body. A main valve element is provided with a suction pressure passage adapted to guide a suction pressure Ps acting on the upper end of the main valve element to a Ps introduction chamber provided at the lower end of the main valve element so that the suction pressure Ps acts on the lower end of the main valve element. A cross-sectional area Ab of a lower fit-inserted portion of the main valve element, an effective opening area Ac of a valve orifice, and a cross-sectional area Ad of an upper fit-inserted portion are equal to one another.

Abstract: Provided is a variable-capacity compressor control valve that is compact and is capable of suppressing the influence of the pressure difference between the crank chamber pressure Pc, the suction pressure Ps, and the like. A valve body includes an in-valve release passage for releasing a pressure Pc in a crank chamber to a suction chamber of a compressor via a Ps inlet/outlet port. A sub valve element adapted to open or close the in-valve release passage along with movement of the plunger is provided.

Abstract: A variable-capacity compressor control valve that can efficiently cancel the influence of the refrigerant pressure acting on a main valve element and avoid increase in complexity of the structure and size of the control valve is provided. A pressure equalizing passage is provided which is adapted to guide a pressure Pc in a crank chamber acting on the lower end of a main valve element to a pressure-sensitive chamber so that the pressure Pc in the crank chamber acts on the upper end of the main valve element. When an electromagnetic actuator or a solenoid portion thereof is not supplied with current i.e., when a valve orifice is fully open, the introduction of a suction pressure Ps from Ps inlet/outlet ports Ps inlet/outlet chamber into the pressure-sensitive chamber is stopped, and the pressure Pc in the crank chamber is introduced into the pressure-sensitive chamber via the pressure equalizing passage so that the pressure Pc in the crank chamber acts on the upper and lower ends of the main valve element.

Abstract: Provided is a variable-capacity compressor control valve with a reduced number of components and thus with a reduced cost, and also with stabilized controllability. A pushrod is disposed between a bellows device, which is a pressure-sensitive reaction member, and a sub valve element, and a plunger spring (i.e., an urging member) adapted to urge the sub valve element and the pushrod in directions away from each other is disposed between the sub valve element and the pushrod so as to urge the sub valve element in the direction to close the in-valve release passage and hold the bellows device within the pressure-sensitive chamber via the pushrod.

Abstract: Provided is a variable-capacity compressor control valve that can secure the attraction force of an electromagnetic actuator and can improve the actuation property without increasing the body size. A sub valve element or a cylindrical upper end portion thereof, which is a magnetic body made of the same magnetic material as or a different magnetic material from that of a plunger, is fixed to the inner periphery of the upper end portion of the plunger that is opposite an attractor.

Abstract: Provided is a variable-capacity compressor control valve with a simple configuration that can increase the attraction force of an electromagnetic actuator and thus can reduce the size of the control valve. A sub valve element that is a magnetic body made of the same magnetic material as or a different magnetic material from that of a plunger, which is adapted to move a main valve element in the direction to open or close the valve orifice, is fitted in and fixed to the plunger.

Abstract: Provided is a variable-capacity compressor control valve that can suppress a decrease in the efficiency by reducing the amount of leakage in the valve without requiring severe accuracy of the components, avoid possible operation failures, and suppress the influence on the sliding resistance as well as the influence on the control characteristics. A main valve element of a valve element or a valve body is provided with a flexible or elastic sealing member. The sealing member is adapted to, when the valve orifice is closed by the main valve element, abut an end portion on the higher pressure side in a gap between sliding surfaces that is formed between the main valve element and a guide hole into which the main valve element is adapted to be slidably fitted and inserted, and thus seal the gap between the sliding surfaces.

Abstract: Provided are a variable-capacity compressor control valve with a reduced number of component machining steps, a reduced machining cost, a reduced number of components, and a reduced number of assembly steps as well as reduced sizes of components, and with a simple configuration that can adjust the bellows attachment length and can secure airtightness, and a method for assembling such a control valve. A closure member, which is adapted to close an upper-portion opening of a cylindrical stator on the side opposite to an attractor, is press-fitted into the upper-portion opening and welded therein.

Abstract: Provided is a variable-capacity compressor control valve with a simple configuration that can secure the size of a sub valve element portion of a sub valve element, which is adapted to open or close an in-valve release passage, and can improve the actuation property and reduce the size of the control valve. The sub valve element (17) is integrated with the plunger (37) for moving the main valve element (15) in the direction to open or close a valve orifice so that the sub valve element (17) always moves together with the plunger (37). The sub valve element (17) is securely inserted in the plunger (37).

Abstract: Provided is a variable-capacity compressor control valve with a simple configuration that can increase the attraction force of an electromagnetic actuator and thus can reduce the size of the control valve. A sub valve element that is a magnetic body made of the same magnetic material as or a different magnetic material from that of a plunger, which is adapted to move a main valve element in the direction to open or close the valve orifice, is fitted in and fixed to the plunger.

Abstract: Provided is a variable-capacity compressor control valve that is compact and is capable of suppressing the influence of the pressure difference between the crank chamber pressure Pc, the suction pressure Ps, and the like. A valve body includes an in-valve release passage for releasing a pressure Pc in a crank chamber to a suction chamber of a compressor via a Ps inlet/outlet port. A sub valve element adapted to open or close the in-valve release passage along with movement of the plunger is provided.

Abstract: Provided is a variable-capacity compressor control valve that can secure the attraction force of an electromagnetic actuator and can improve the actuation property without increasing the body size. A sub valve element or a cylindrical upper end portion thereof, which is a magnetic body made of the same magnetic material as or a different magnetic material from that of a plunger, is fixed to the inner periphery of the upper end portion of the plunger that is opposite an attractor.

Abstract: Disclosed is a login method for controlling user access into a restricted access environment requiring a login device, which may be a wearable device, to effectuate a login process.

Abstract: Provided is a pilot type solenoid valve (100) providing a good operation even within a wide temperature specification range. The A pilot type solenoid valve (100) is configured such that a main valve body (40) made of aluminum is slidably housed in a suction element (80) made of a magnetic material. Then, an alumite treatment layer is formed on a sliding surface in the main valve body (40) along which the suction element (80) slides by applying an alumite treatment to the sliding surface. Thereby, a linear expansion coefficient of the main valve body (40) is brought close to a linear expansion coefficient of the suction element (80).

Abstract: Disclosed is a login method for controlling user access into a restricted access environment requiring a login device, which may be a wearable device, to effectuate a login process.

Abstract: Provided is a variable-capacity compressor control valve where a valve body can be easily machined and the machining time and machining cost can be reduced without a decrease in the valve closing property or a decrease in the slidability of the valve element due to shaft misalignment. The valve body includes a support member having formed therein a valve orifice and a guide hole into which the valve element is adapted to be slidably fitted and inserted; and a body member having formed therein a Ps inlet/outlet port, a Pd introduction port, and a Pc inlet/outlet port. The support member is fixedly inserted into a recess hole provided in the body member. In addition, a chip sealing portion (pocket portion) for sealing chips of the body member and/or the support member is provided between the body member and the support member.

Abstract: Provided is a variable-capacity compressor control valve that can suppress a decrease in the efficiency by reducing the amount of leakage in the valve without requiring severe accuracy of the components, avoid possible operation failures, and suppress the influence on the sliding resistance as well as the influence on the control characteristics. A main valve element of a valve element or a valve body is provided with a flexible or elastic sealing member. The sealing member is adapted to, when the valve orifice is closed by the main valve element, abut an end portion on the higher pressure side in a gap between sliding surfaces that is formed between the main valve element and a guide hole into which the main valve element is adapted to be slidably fitted and inserted, and thus seal the gap between the sliding surfaces.