Eagle Industry Co., Ltd.

Mahle International Gmbh

Daichi Kurihara

Kohei Fukudome

Keigo Shirafuji

Masahiro Hayama

Wataru Takahashi

Takahiro Ejima

Yoshihiro Ogawa

Hideki Higashidozono

Akihiro Hashiguchi

Toshinori Kanzaki

Ernesto Jose Gutierrez

Matthew R Warren

Hiroyuki Nishinosono

Kenshiro Furukawa

Keichi Urushiyama

An expansion valve having a high valve opening adjustment accuracy includes: a valve housing which is provided with an inlet port allowing a refrigerant from a condenser to pass therethrough and an outlet port allowing a refrigerant toward an evaporator to pass therethrough; a valve body which is driven by a solenoid; a valve seat on which the valve body sits; and an urging member configured to urge the valve body in a valve closing direction, a space is formed on a valve opening direction side of the valve body, and the refrigerant on the valve closing direction side in relation to the valve body flows into the space.

Expansion valve

A valve includes: a housing having a primary pressure space and a secondary pressure space; a valve seat disposed between the primary pressure space and the secondary pressure space; a valve body that is driven in an axial direction by a driving source to be seated on or separate from the valve seat; and a communication passage that provides communication between a back space adjacent to one of the primary pressure space and the secondary pressure space and remaining one of the primary pressure space and the secondary pressure space. A partition member is disposed between the valve housing and the valve body, and the back space and the one of the primary pressure space and the secondary pressure space are partioned off from each other in a sealed state by the partition member.

Valve

Disclosed is a capacity control valve includes a valve housing. A main valve including a valve body is driven by a solenoid, and a main valve seat which is between a discharge port and a control port and with which the valve body can contact, a pressure sensitive valve member forms a pressure sensitive valve, together with a pressure sensitive body disposed in a pressure sensitive chamber. The control port and a suction port communicate with each other through an intermediate communication passage by opening and closing of the pressure sensitive valve. The pressure sensitive valve member has a through-hole communicating with the intermediate communication passage, and has an opening and closing member attached thereto such that the opening and closing member is restricted in movement with respect to the valve housing by restriction device and slides relative to the pressure sensitive valve member to open and close the through-hole.

Capacity control valve

A capacity control valve includes a valve housing. A main valve including a valve body is driven by a solenoid, and a main valve seat which is provided between a discharge port and a control port and with which the valve bodyis allowed to contact. A pressure sensitive valve member forming a pressure sensitive valve with a pressure sensitive body is disposed in a pressure sensitive chamber. The control port and a suction port communicate through an intermediate communication passage by opening the pressure sensitive valve. A slide valve body slides relative to the pressure sensitive valve member to open and close a through-hole communicating with the intermediate communication passage. The slide valve body partitions the pressure sensitive chamber into a Pd side space and a Pc side space, and a Pd-Pc flow passage providing communication between two spaces and is formed in the slide valve body.

A capacity control valve includes a valve housing; a main valve including a valve body driven by a solenoid, and a main valve seat between a discharge port and a control port and with which the valve body is contactable; and a pressure sensitive valve member disposed in a pressure sensitive chamber and forming a pressure sensitive valve, together with a pressure sensitive body. The control port and a suction port communicate with each other through an intermediate communication passage by opening the pressure sensitive valve. The pressure sensitive valve member has a through-hole communicating with the intermediate communication passage and has a slide valve body attached thereto such that the slide valve body slides relative to the pressure sensitive valve member to open and close the through-hole. A biasing device is provided on a radially outer side of the slide valve body.

A capacity control valve includes a valve housing formed with a discharge port, a suction port, and first and second control ports, a rod movably arranged in the valve housing and driven by a solenoid, a CS valve configured to control a fluid flow between the first control port and the suction port in accordance with a movement of the rod, and a DC valve configured to control a fluid flow between the second control port and the discharge port in accordance with the movement of the rod. In a non-energization state, the CS valve is closed and the DC valve is closed. As the energization of the solenoid becomes larger, the CS valve transitions from a closed state to an open state and the DC valve transitions from a closed state to an open state.

A capacity control valve includes a valve housing provided with a discharge port, suction ports, a control port allowing a control fluid of a control pressure Pc to pass therethrough and a primary valve including a primary valve seat and a primary valve body driven by a solenoid and opening and closing a communication between the discharge port and the control port by the movement of the primary valve body. The capacity control valve further includes a CS valve which includes a CS valve body, a first spring urging the CS valve body in a closing direction, and a second spring urging the CS valve body in an opening direction, the control port and the suction port being opened at a valve closed position of the primary valve body, the control port and the suction port being closed at a valve opened position of the primary valve body.

A capacity control valve includes a valve housing formed with a discharge port, a suction port, and first and second control ports, a rod driven by a solenoid, a CS valve configured to control a fluid flow between the first control port and the suction port in accordance with a movement of the rod, and a DC valve configured to control a fluid flow between the second control port and the discharge port in accordance with a movement of the rod.

A capacity control valve for controlling a capacity of a fluid includes: a valve housing; a main valve closing and opening a communication between a Pc port and a Pd port when a main valve portion of a main valve element driven by a drive force of a solenoid comes into contact with and separates from a main valve seat; a pressure-sensitive valve which is opened by an ambient pressure; a hollow tube member which forms a part of the pressure-sensitive valve and allows the Pc port to communicate with a Ps port through a hollow communication path formed therein when the pressure-sensitive valve is opened; and an auxiliary communication path allows the Pc port to communicate with the Ps port independently of the pressure-sensitive valve, and the auxiliary communication path is configured to be able to increase a flow path cross-sectional area after the main valve is closed.

A capacity control valve includes a valve housing provided with a discharge port, suction ports, and a control port and a primary valve including a primary valve seat and a primary valve body driven by a solenoid, the primary valve being configured to open and close a communication between the discharge port and the control port in accordance with a movement of the primary valve body. The capacity control valve further includes a differential CS valve which is openable and closable by a pressure difference between the control pressure Pc and the suction pressure Ps and an electromagnetic CS valve that is openable and closable so as to close the control port and the suction port in a non-energized state of the solenoidin accordance with the movement of the primary valve body.

A capacity control valve includes: a valve body () including first communication passages (), second communication passages (), third communication passages (), and a main valve seat (); a valve element () including an intermediate communication passage (), a main valve portion (), and an auxiliary valve portion; a solenoid () that drives a rod () provided with an auxiliary valve seat (); a first biasing member () that biases in a valve closing direction of the main valve portion (); and a second biasing member () that biases in a valve closing direction of the auxiliary valve portion (), wherein the rod () moves relative to the valve element () to open and close the auxiliary valve portion (). The capacity control valve allows a liquid refrigerant to be efficiently discharged and allows a driving force of a compressor to be decreased.

Capacity control valve and method for controlling capacity control valve

A capacity control valve includes a CS valve which opens and closes a communication between the control fluid and the suction fluid by the movement of rods and an urging member configured to urge the primary valve body and the rods in opposite directions and the primary valve body and the rods are disposed so as to be relatively movable in an axial direction.

An electromagnetic valve has a valve housing; a valve body disposed inside the valve housing and movable in a reciprocating manner; an urging member configured to urge the valve body in one direction; and a drive device which is connected to the valve housing and applies a drive force to the valve body. A drive rod of the drive device includes a guide portion which faces an inner peripheral surface of a fixed iron core such that a movement of the drive rod is guided in an axial direction and a groove portion which is recessed in an inward radial direction from the guide portion and the groove portion is continuously formed from an inside of the valve housing to an inside of a movable iron core.

Electromagnetic valve

The purpose of the present invention is to provide a capacity control valve with which it is possible to efficiently discharge a liquid refrigerant irrespective of the pressure of a suction chamber. A capacity control valve () includes: a valve main body () having a first communication passage (), a second communication passage (), a third communication passage (), and a main valve seat (); a valve body () having an intermediate communication passage (), a main valve part (), and an auxiliary valve part (); and a solenoid () equipped with a first plunger () having a first rod (), and a second plunger () having a second rod (), the first rod () opens and closes the main valve part (), and the second rod () opens and closes the auxiliary valve part ().

Capacity control valve and method for controlling same

A capacity control valve, which can efficiently discharge a liquid refrigerant and reduce the driving force of a compressor, includes: a valve main body () including a first communication passage (), a second communication passage (), a third communication passage () and a main valve seat (); a valve body () including an intermediate communication passage (), a main valve part () and an auxiliary valve part (); a solenoid () which drives a rod () having an auxiliary valve seat (); a first biasing member () which biases the main valve part () in the valve closing direction thereof; and a second biasing member () which biases the main valve part () in the valve opening direction thereof, and the rod () relatively moves to the valve body (), and opens and closes the auxiliary valve part ().

Growing community of inventors

Tokyo, Japan

Daichi Kurihara