Control valve
AssigneeTgk Co., Ltd.
InventorTakeshi Kaneko
Life of this patent
Estimating the term…
Abstract
An expansion valve includes a shaft one end side of which connects to a power element and the other end side of which connects to a valve element, the shaft transmitting the drive force, generated by the power element in a direction of axis line, to the valve element, and a sliding mechanism that applies a sliding resistance to the actuation of the valve element. The sliding mechanism is configured such that the magnitude of the sliding resistance affected to the valve element is varied by the position of the valve element in the direction of axis line in the body.
Claims17
A control valve, provided in a refrigeration cycle, for controlling a flow of refrigerant, the control valve comprising:
- a body having a lead-in port through which the refrigerant is led in, a lead-out port through which the refrigerant is led out, and a valve hole formed in a refrigerant passage joining the lead-in port to the lead-out port;
- a valve element that opens and closes a valve section by moving toward and away from the valve hole;
- a drive section that generates a drive force used to open and close the valve section;
- a shaft one end side of which connects to a movable member of the drive section and another end side of which connects to the valve element, the shaft transmitting the drive force, generated by the drive section in a direction of axis line, to the valve element, wherein the shaft is so provided as to run through an insertion hole formed in the body;
- and
- a sliding mechanism that directly or indirectly applies a sliding resistance to an actuation of the valve element,
- wherein the sliding mechanism is configured such that a magnitude of the sliding resistance affected to the valve element is varied by a position of the valve element in the direction of axis line in the body.
Dependencies are inferred from the claim text.