Fluid handling – Systems – Multi-way valve unit
Patent
1981-02-26
1982-11-30
Rosenthal, Arnold
Fluid handling
Systems
Multi-way valve unit
251305, 251 615, 237 8A, 165 35, F16K 122
Patent
active
043611702
ABSTRACT:
A passenger vehicle heater core fluid flow system and bypass valve (10) therefor is disclosed having a butterfly valve member (24) rotatably mounted in a primary fluid passageway (14) and intermediate first (20) and second (21) fluid ports which fluidly communicate with the primary passage. Third (22) and fourth (19) ports are in fluid communication with the primary passageway and spaced at each end thereof. The first and third ports are connected to high and low pressure locations on the engine cooling system respectively. The fourth port is connected to the heater core inlet and the second port is connected to the heater core outlet. When the valve is in an open position, a pair of isolated parallel flow paths are defined by flow through the first and fourth ports and by flow through the second and third ports. In the closed position flow enters the first port and immediately exhausts from the third port without entering the heater core flow path, thereby preventing heat transfer to the heater core.
REFERENCES:
patent: 2105193 (1938-01-01), Kysor
patent: 2113775 (1938-04-01), Vulpen
patent: 2526923 (1950-10-01), Alessandro
patent: 3052445 (1962-09-01), Kessler
patent: 3779307 (1973-12-01), Weiss et al.
Eaton Corporation
Grace C. H.
Rosenthal Arnold
Sajovec F. M.
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