US 12,234,923 B2
Electric valve
Tatsuya Yoshida, Tokyo (JP); Yuta Matsubara, Tokyo (JP); and Yusuke Arai, Tokyo (JP)
Assigned to FUJIKOKI CORPORATION, Tokyo (JP)
Appl. No. 18/272,958
Filed by FUJIKOKI CORPORATION, Tokyo (JP)
PCT Filed Jan. 24, 2022, PCT No. PCT/JP2022/002381
§ 371(c)(1), (2) Date Jul. 18, 2023,
PCT Pub. No. WO2022/168651, PCT Pub. Date Aug. 11, 2022.
Claims priority of application No. 2021-018392 (JP), filed on Feb. 8, 2021.
Prior Publication US 2024/0084914 A1, Mar. 14, 2024
Int. Cl. F16K 31/04 (2006.01); F16K 27/02 (2006.01); F16K 37/00 (2006.01); H02K 11/215 (2016.01); H02K 11/33 (2016.01)
CPC F16K 31/04 (2013.01) [F16K 27/029 (2013.01); F16K 37/0033 (2013.01); H02K 11/215 (2016.01); H02K 11/33 (2016.01)] 9 Claims
OG exemplary drawing
 
1. An electric valve comprising:
a valve body;
a can that is bonded to the valve body;
a magnet rotor that is disposed inside the can; and
a stator unit that includes an inner space in which the can is disposed,
wherein the stator unit includes a housing, a stator in a circular cylindrical shape that is housed in the housing, a main circuit board in a flat plate-like shape, a sub circuit board in a flat plate-like shape, and a magnetic sensor that is mounted on the sub circuit board,
wherein the housing includes a sub circuit board space that is located laterally adjacent to the inner space,
wherein a first end of the sub circuit board is connected to the main circuit board via a circuit board terminal,
wherein a second end of the sub circuit board is located near the inner space in the sub circuit board space, and
wherein the magnetic sensor is located closer to the inner space than the circuit board terminal is,
wherein the housing includes a partition wall that separates the sub circuit board space from the inner space, the partition being disposed laterally between the sub circuit board space and the inner space,
wherein the main circuit board is disposed parallel to a direction of an axis of the stator, and
wherein the sub circuit board is disposed at a right angle to the main circuit board.