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US 10,704,697 B2Granted
Bypass valve for expansion machine
AssigneeRobert Bosch GmbH
InventorsPeter Schwaderer, Benjamin Schweizer, Frank Scholz
Life of this patent
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AssigneeRobert Bosch GmbH
InventorsPeter Schwaderer, Benjamin Schweizer, Frank Scholz
Estimating the term…
The invention relates to a bypass valve (1), in particular for an expansion machine (104) of a waste heat recovery system (100). The bypass valve (1) has a housing (2) with a valve chamber (9) formed therein. An inlet (3), an expander outlet (4) and a bypass outlet (5) are formed in the housing (2), which feed into the valve chamber (9). A closing element (6) is moveably arranged in the valve chamber (9). A valve seat (11) is formed on the housing (2). The closing element (6) cooperates with the valve seat (11) in order to open and close a first hydraulic connection from the inlet (3) to the expander outlet (4). A control valve (8) opens and closes a second hydraulic connection from the inlet (3) to the bypass outlet (5). The control valve (8) forms a first throttle point (21) in an open position. A second throttle point (22) is arranged between the valve chamber (9) and the bypass outlet (5). The control valve (8), the second throttle point (22) and the closing element (6) border a control chamber (9a). The first throttle point (21) has a greater flow cross-section than the second throttle point (22).
A bypass valve (1), comprising a housing (2) with a valve chamber (9) formed therein, wherein an inlet (3), an expander outlet (4) and a bypass outlet (5) are formed in the housing (2) and open into the valve chamber (9), wherein a closing body (6) is movably arranged in the valve chamber (9), wherein a valve seat (11) is formed in the housing (2), wherein the closing body (6) interacts with the valve seat (11) for the opening and closing of a first hydraulic connection from the inlet (3) to the expander outlet (4), wherein a control valve (8) opens and closes a second hydraulic connection from the inlet (3) to the bypass outlet (5), wherein in an open position the control valve (8) forms a first restriction point (21), wherein a second restriction point (22) is arranged between the valve chamber (9) and the bypass outlet (5), wherein the control valve (8), the second restriction point (22) and the closing body (6) delimit a control chamber (9a), and wherein the first restriction point (21) has a larger flow passage cross section than a flow passage cross section of the second restriction point (22).
Dependencies are inferred from the claim text.