US 12,298,048 B2
Expansion valve
Kohei Fukudome, Tokyo (JP); Toshinori Kanzaki, Tokyo (JP); Keigo Shirafuji, Tokyo (JP); Keichi Urushiyama, Tokyo (JP); Takahiro Ejima, Tokyo (JP); Kenshiro Furukawa, Tokyo (JP); Akihiro Hashiguchi, Tokyo (JP); and Daichi Kurihara, Tokyo (JP)
Assigned to EAGLE INDUSTRY CO., LTD., Tokyo (JP)
Appl. No. 18/019,057
Filed by EAGLE INDUSTRY CO., LTD., Tokyo (JP)
PCT Filed Jul. 27, 2021, PCT No. PCT/JP2021/027772
§ 371(c)(1), (2) Date Jan. 31, 2023,
PCT Pub. No. WO2022/030315, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 2020-132545 (JP), filed on Aug. 4, 2020.
Prior Publication US 2023/0280075 A1, Sep. 7, 2023
Int. Cl. F25B 41/345 (2021.01); F25B 41/32 (2021.01)
CPC F25B 41/345 (2021.01) [F25B 41/32 (2021.01); F25B 2341/06 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An expansion valve, comprising:
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,
wherein a space is formed on a valve opening direction side of the valve body,
the refrigerant on the valve closing direction side in relation to the valve body flows into the space through a communication path, and
the space is closed except for a communication through the communication path.