Eagle Industry Co., Ltd.

Other

Kabushiki Kaisha Toyota Jidoshokki

Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Nok Corporation

Hideki Higashidozono

Masahiro Hayama

Kohei Fukudome

Keigo Shirafuji

Norio Uemura

Daichi Kurihara

Toshinori Kanzaki

Masahiro Kawaguchi

Naoki Nishimura

Ichiro Hirata

Masayuki Futakuchi

Masaki Ota

Kazuya Kimura

Koji Watanabe

Ryo Matsubara

Noriyuki Shintoku

Kazuhiko Minami

Kouji Watanabe

Hiroshi Uneyama

Takuya Kudo

Provided is a fluid control valve that is less likely to malfunction due to contamination. The fluid control valve includes a valve housing which includes an inflow passage and a discharge passage; a valve seat which is disposed between the inflow passage and the discharge passage, and a valve body which includes a guide portion guided by an inner surface of the valve housing and a seal portion brought into contact with and separated from the valve seat, the guide portion of the valve body includes a flat surface and a tapered surface tapered toward a side of the seal portion.

Fluid control valve

Provided is a fluid control valve capable of stabilizing fluid control characteristics. In a fluid control valve including: a valve housing and a valve seat member which include an inflow passage and a discharge passage, and a valve body that is configured to be brought into contact with and separated from the valve seat member and that forms an inner seal portion and an outer seal portion together with the valve seat member. At least one convex portion which projects into a space inside the valve housing formed between the inner seal portion and the outer seal portion.

Provided is a valve capable of reliably blocking a gap between a valve body and a valve seat at least in a valve closed state. A valve includes a valve seat and a valve body, wherein the valve body and the valve seat are apart from each other at a radial gap and are arranged to be relatively movable in a reciprocating manner and an elastically deformable annular sealing body extends from one of the valve body and the valve seat so as to seal the gap.

Valve

A fluid control valve having extremely high responsiveness not only when a pressure of a working fluid of a first flow path is high but also when the pressure of the working fluid of the first flow path is low includes: a valve seat; a valve body contacting and separating from the valve seat; a first biasing member biasing the valve body in a valve closing direction; and a second biasing member having a spring force lower than that of the first biasing member, wherein the valve body is axially divided into a base portion biased by the first biasing member and an opening and closing portion contacting and separating from the valve seat, and the second biasing member is disposed so that the base portion and the opening and closing portion are axially separable from each other.

A capacity control valve includes: a valve body having first communication passages, second communication passages, third communication passages, and a main valve seat; a valve element having an intermediate communication passage, a main valve portion and an auxiliary valve portion; a pressure-sensitive element disposed in the valve body; a solenoid that drives a rod; 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 opening direction of the main valve portion, wherein the rod moves relative to the valve element to press the pressure-sensitive element. The capacity control valve can efficiently discharge a liquid refrigerant and can decrease a driving force of a compressor during a liquid refrigerant discharge operation.

Capacity control valve and capacity control valve control method

A capacity control valve is provided with a throttle valve portion having a communication hole and a second valve hole. The communication hole is provided between a second valve portion and a third valve portion and makes an intermediate communication passage communicate with a third valve chamber. The second valve hole is provided between a second valve chamber and the third valve chamber. An amount of narrowing of the throttle valve portion in relation to a stroke of a valve element is set larger when the second valve portion initially opens by separating from a second valve seat face, and then becomes narrower after the initial opening of the valve. The capacity control valve is capable of shortening a start-up time and improving the operating efficiency of a variable capacity compressor.

Capacity control valve having a throttle valve portion with a communication hole

In an exemplary embodiment, a capacity control valve includes: a valve main bodyhaving a first valve chamberthrough which a fluid at control pressure passes and which has a first valve seat surfaceA, and an interior spacethrough which a fluid at suction pressure passes; and a valve bodyhaving an intermediate communication passagefor communicating the first valve chamberand the interior space, and a first valve partC for opening and closing the intermediate communication passageadjacent to the first valve seat surfaceA, wherein an opening area of the first valve partC is smaller than that of the intermediate communication passage. The capacity control valve is capable of simultaneously achieving reduction of a start-up time of the variable capacity compressor and improvement of responsiveness of capacity control at the time of control.

Capacity control valve

A capacity control valve includes: a valve body () having first communication passages (), second communication passages (), third communication passages (), and a main valve seat (); a valve element () having an intermediate communication passage (), a main valve portion () and an auxiliary valve portion (); a pressure-sensitive element () disposed in the valve body (); a solenoid () that drives a rod (); 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 opening direction of the main valve portion (), wherein the rod () moves relative to the valve element () to press the pressure-sensitive element (). The capacity control valve can efficiently discharge a liquid refrigerant and can decrease a driving force of a compressor during a liquid refrigerant discharge operation.

Provided is a displacement control valve capable of quickly reducing pressure in a control chamber to a level of pressure kept during continuous driving, at the time of the startup of a variable displacement compressor. The valve housing is provided with a through hole constituting a part of a first communicating passage that communicates with a pressure chamber at one end thereof and that is communicable with a second valve chest at the other end thereof.

Displacement control valve

A displacement control valve is provided for discharging liquid refrigerant in a control chamber at startup and achieves a reduction in startup time and an improvement in operating efficiency during control of a variable displacement compressor simultaneously. The opening area between communicating holes in a third valve section and a third valve seat surface in a control area to control the flow rate or pressure in a working control chamber is set smaller than the area of auxiliary communicating passages.

A displacement control valve improved in the function of discharging a liquid refrigerant in a control chamber at startup achieves a reduction in startup time and an improvement in operating efficiency during control of a variable displacement compressor simultaneously. An opening area between a third valve section and a third valve seat surface in a control area to control the flow rate or pressure in a working control chamber is set smaller than an area of an auxiliary communicating passage, thereby reducing the minimum area of a Pc-Ps flow path in the control area.

The inflow of an external fluid into a mounting hole of a displacement control valve can be prevented, and accumulated gas in the mounting hole due to the permeation leakage of high-pressure gas can be discharged to the outside. A displacement control valveinserted and fitted in a mounting holeprovided in a casing of a device controlled in displacement includes a sealing lip. The sealing lipis fitted in a fitting sectionat an outer peripheral portion of the displacement control valveon a side close to an entrance of the mounting hole. The sealing liphas a lip portionabutting on an inner peripheral surface of the mounting hole

A displacement control valve includes a valve housing, a valve element fitted in a guide passage of the valve housing, and a solenoid for driving the valve element to open and close it, a tapered portion is provided at one of an outer peripheral surface of the valve element and a guide surface of the guide passage, and a spiral groove is provided in the other, wherein the tapered portion is set such that a gap between the valve element and the guide passage is larger toward the low-pressure side than on the high-pressure side, and the tapered portion and the spiral groove are provided such that a starting point of the tapered portion is located within the region of the spiral groove in the entire range between the starting point and the ending point of the stroke of the valve element.

A control valve for discharging a liquid refrigerant in a control chamber at the time of start-up of a variable capacity compressor has a movable a center post for increasing the area of a passage for discharging the liquid refrigerant when discharging the liquid refrigerant.

A capacity control valve includes: intake-side passages connecting an intake chamber that takes in fluid and a control chamber; a pressure-sensitive chamber formed midway along the intake-side passages; a liquid-refrigerant discharge valve that receives the pressure of the control chamber to open and close the intake-side passages; a pressure-sensitive body placed in the pressure-sensitive chamber, which extends to apply a biasing force to the liquid-refrigerant discharge valve in the direction of closing the valve, while contracting as the ambient pressure increases; and a solenoid that applies an electromagnetic drive force to control the main valve; wherein the pressure-sensitive body is supported on one side by the driving rod of the solenoid in a manner permitting relative motion, while connected on the other side to the liquid-refrigerant discharge valve, wherein the discharge valve structure and discharge flow passages for discharging liquid refrigerant are simplified.

Growing community of inventors

Tokyo, Japan

Hideki Higashidozono