US 12,253,180 B2
Valve device
Hiroyuki Kawarai, Kanagawa (JP); Yasuhiro Tochigi, Kanagawa (JP); and Toshiaki Fujitani, Kanagawa (JP)
Assigned to MIKUNI CORPORATION, Tokyo (JP)
Filed by MIKUNI CORPORATION, Tokyo (JP)
Filed on Jun. 1, 2023, as Appl. No. 18/327,084.
Claims priority of application No. 2022-118479 (JP), filed on Jul. 26, 2022.
Prior Publication US 2024/0035579 A1, Feb. 1, 2024
Int. Cl. F16K 11/085 (2006.01); F16K 5/04 (2006.01)
CPC F16K 11/0853 (2013.01) [F16K 5/0407 (2013.01); F16K 5/0471 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A valve device comprising:
a housing defining: a main flow port through which a fluid passes; a first flow port and a second flow port which are opened apart in a circumferential direction at an inner peripheral surface centered on a predetermined axis to allow the fluid to pass therethrough and respectively have a first opening width and a second opening width in the circumferential direction; and an accommodation chamber; and
a valve body in a cylindrical shape which is arranged in the accommodation chamber and is capable of rotating around the axis to open and close the first flow port and the second flow port, wherein
the valve body comprises: an internal passage which communicates with the main flow port when the first flow port communicates with a first communication port and the second flow port communicates with a second communication port; the first communication port which expands in one direction in the circumferential direction continuously with a region facing the first flow port to allow communication between the internal passage and the first flow port, and has an opening width larger than the first opening width; and the second communication port which expands in the other direction in the circumferential direction continuously with a region facing the second flow port to allow communication between the internal passage and the second flow port, and has an opening width larger than the second opening width.