US 12,449,048 B2
Rotary valve
Koichi Maruyama, Kariya (JP)
Assigned to AISIN CORPORATION, Aichi (JP)
Appl. No. 18/555,283
Filed by AISIN CORPORATION, Aichi (JP)
PCT Filed Jun. 6, 2022, PCT No. PCT/JP2022/022798
§ 371(c)(1), (2) Date Oct. 13, 2023,
PCT Pub. No. WO2022/260006, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 2021-095072 (JP), filed on Jun. 7, 2021.
Prior Publication US 2024/0191806 A1, Jun. 13, 2024
Int. Cl. F16K 11/16 (2006.01); F16K 31/04 (2006.01)
CPC F16K 11/165 (2013.01) [F16K 31/043 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A rotary valve comprising:
a housing including a plurality of supply ports to which fluid is supplied and a plurality of discharge ports from which fluid is sent;
a plurality of rotors housed in the housing so as to be rotatable about a rotation axis, and each configured to rotate to cause the fluid from the plurality of supply ports to flow into a corresponding one of the plurality of discharge ports;
a linkage mechanism configured to cause the plurality of rotors to rotate in conjunction with each other; and
an electric actuator configured to drive and rotate the plurality of rotors, wherein
the plurality of rotors includes a drive rotor to which a driving rotational force of the electric actuator is transmitted and a driven rotor to which the driving rotational force is transmitted from the drive rotor via the linkage mechanism,
the linkage mechanism includes a contact portion formed in the drive rotor and a contacted portion formed in the driven rotor, and is configured to select between a transmission mode and a non-transmission mode by selecting a rotational direction of the drive rotor, the transmission mode being a mode in which the contact portion is in contact with the contacted portion so as to transmit the driving rotational force to the driven rotor, and the non-transmission mode being a mode in which the contact portion is separated from the contacted portion so as not to transmit the driving rotational force to the driven rotor,
the drive rotor and the driven rotor are in such a positional relationship that the drive rotor and the driven rotor are located next to each other in a direction along the rotation axis, and
each of the contact portion and the contacted portion is located on a circumference of an imaginary circle about the rotation axis, either or both of the number of the contact portions and the number of the contacted portions are two or more, and either or both of the two or more contact portions and the two or more contacted portions are located at positions separated from each other in a circumferential direction of the imaginary circle.