US 12,078,253 B2
Valve device
Shingo Sato, Kariya (JP); Yuto Sato, Kariya (JP); Masato Ichikawa, Kariya (JP); Akihiko Goto, Kariya (JP); Tadashi Ikemoto, Kariya (JP); Ryo Nomura, Kariya (JP); Ryuki Tsuji, Kariya (JP); Takahito Suzuki, Kariya (JP); and Shogo Kanzaki, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Aug. 31, 2023, as Appl. No. 18/240,390.
Application 17/718,407 is a division of application No. 17/105,878, filed on Nov. 27, 2020, granted, now 11,333,258, issued on May 17, 2022.
Application 18/240,390 is a continuation of application No. 18/081,982, filed on Dec. 15, 2022, granted, now 11,788,634.
Application 18/081,982 is a continuation of application No. 17/718,407, filed on Apr. 12, 2022, granted, now 11,560,958, issued on Jan. 24, 2023.
Application 17/105,878 is a continuation of application No. PCT/JP2019/021179, filed on May 29, 2019.
Claims priority of application No. 2018-105458 (JP), filed on May 31, 2018; and application No. 2018-233919 (JP), filed on Dec. 13, 2018.
Prior Publication US 2023/0407977 A1, Dec. 21, 2023
Int. Cl. F16K 11/07 (2006.01); F01P 3/02 (2006.01); F01P 5/10 (2006.01); F01P 7/14 (2006.01); F16K 11/076 (2006.01); F16K 27/04 (2006.01)
CPC F16K 11/076 (2013.01) [F16K 27/041 (2013.01); F01P 3/02 (2013.01); F01P 5/10 (2013.01); F01P 7/14 (2013.01); F01P 2007/146 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A valve device configured to control coolant water of a heating element of a vehicle, the valve device comprising:
a housing having an internal space, a radiator port connected to the internal space and connected to a radiator of the vehicle, a heater port connected to the internal space and connected to a heater of the vehicle, and a device port connected to the internal space and connected to a device of the vehicle;
a valve having a valve body rotatable about a rotation axis inside the internal space, the valve being configured to open and close the radiator port, the heater port, or the device port in accordance with a rotation position of the valve body;
a drive unit configured to drive the valve body to rotate; and
a control unit configured to control a flow of the coolant water between the radiator port and the radiator, between the heater port and the heater, and between the device port and the device by controlling an operation of the drive unit and controlling rotational drive of the valve body, wherein
the control unit is further configured to control the drive unit and the valve body in accordance with the rotational drive of the valve body rotating to one side in a rotation direction such that the heater port and the device port are closed and an opening degree of only the radiator port reaches a predetermined opening degree after all opening degrees of the radiator port, the heater port, and the device port reached the predetermined opening degree.