US 11,939,981 B2
Rotary disc valve
Thomas Chapman, Templeton, MA (US)
Assigned to Robert Bosch LLC, Farmington Hills, MI (US); and Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Dec. 16, 2021, as Appl. No. 17/553,131.
Prior Publication US 2023/0193906 A1, Jun. 22, 2023
Int. Cl. F04D 15/00 (2006.01); F04B 1/0421 (2020.01); F02M 41/10 (2006.01); F04B 49/12 (2006.01)
CPC F04D 15/0038 (2013.01) [F04B 1/0421 (2013.01); F02M 41/10 (2013.01); F04B 49/128 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A valve including a housing, a diverter, and a seal assembly, the housing comprising: a valve body, valve body including a sidewall, and a base that closes one end of the sidewall, a lid that closes an open end of the valve body, the sidewall, the base and the lid cooperating to define a chamber therebetween, and valve ports, each valve port communicating with the chamber; and the diverter having a disc shape and being disposed in the chamber, the diverter being rotatable relative to the valve body about a rotational axis, the diverter configured to control fluid flow through the valve body based on a rotational orientation of the diverter relative to the valve body, the seal assembly being disposed in the chamber and providing a fluid-tight seal between the diverter and the valve body, wherein the diverter, the valve body and the seal assembly cooperate to define a fluid passageway that passes through the seal assembly, and portions of the fluid passageway defined by each of the diverter, the valve body and the seal assembly are coaxial with the rotational axis;
wherein the diverter includes a diverter inner surface that faces toward the base, a diverter outer surface that is opposed to the diverter inner surface and faces away from the base, diverter through openings that extend between the diverter inner surface and the diverter outer surface, and a shaft that protrudes from the diverter in a direction perpendicular to the diverter outer surface and is concentric with the rotational axis, the shaft configured to be driven to rotate about the rotational axis;
wherein the diverter through openings include a first diverter through opening that is coincident with the rotational axis, and a second diverter through opening that is disposed between the rotational axis and a side surface of the diverter;
wherein the first diverter through opening includes: a first portion that is coincident with the rotational axis; and a second portion that is disposed between the first portion and the side surface of the diverter, the second portion being contiguous with the first portion, and the diverter includes a dome that overlies the first and second portions of the first diverter through opening, the dome preventing fluid communication between the first diverter through opening and the second diverter through opening.