Cooler bypass assembly
First Claim
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1. A cooler bypass apparatus comprising:
- a housing adapted to be secured to a structure having a fluid to be cooled;
first and second inlet ports and first and second outlet ports carried on the housing, the housing having a second fluid passageway in communication with the first inlet port and the first outlet port, a first fluid passageway in communication with the second inlet port and the second outlet port, and a transverse fluid passageway extending between the first and second fluid passageways;
a first fluid pressure responsive valve disposed in the transverse fluid passageway to insure one way flow of fluid between a portion of the second fluid passageway and a portion of the first fluid passageway; and
a second valve and a thermal actuator coupled to the second valve, the second valve and the thermal actuator disposed in the second fluid passageway, the thermal actuator moving the second valve to a fluid flow allowing position in the second fluid passageway allowing fluid flow through the second fluid passageway when the temperature of fluid in the second passageway exceeds a threshold temperature; and
whereinthe thermal actuator allows a movable valve member of the second valve to close the second fluid passageway to block fluid flow through the first outlet when the temperature of the fluid in the second fluid passageway is below the threshold temperature, the blocked fluid flow creates a pressure differential between the second passageway and the first passageway, the pressure differential causing the first valve to move to a position in the transverse fluid passageway allowing exclusive flow of fluid from the second passageway to the first passageway through the transverse passageway.
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Abstract
A cooler bypass apparatus housing has a first fluid passageway connecting a first inlet and a first outlet port, and a second fluid passageway connecting a second inlet port and outlet port. A transverse passageway extends between the first and second fluid passageway. A first valve is disposed in the transverse passageway for one-way fluid flow from the first to the second passageway. A second valve and a thermal actuator coupled to the second valve are disposed in the second passageway. The thermal actuator moves the second valve to fluid flow blocking or fluid flow allowing positions dependent upon fluid temperature.
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Citations
7 Claims
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1. A cooler bypass apparatus comprising:
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a housing adapted to be secured to a structure having a fluid to be cooled;
first and second inlet ports and first and second outlet ports carried on the housing, the housing having a second fluid passageway in communication with the first inlet port and the first outlet port, a first fluid passageway in communication with the second inlet port and the second outlet port, and a transverse fluid passageway extending between the first and second fluid passageways;a first fluid pressure responsive valve disposed in the transverse fluid passageway to insure one way flow of fluid between a portion of the second fluid passageway and a portion of the first fluid passageway; and a second valve and a thermal actuator coupled to the second valve, the second valve and the thermal actuator disposed in the second fluid passageway, the thermal actuator moving the second valve to a fluid flow allowing position in the second fluid passageway allowing fluid flow through the second fluid passageway when the temperature of fluid in the second passageway exceeds a threshold temperature; and
whereinthe thermal actuator allows a movable valve member of the second valve to close the second fluid passageway to block fluid flow through the first outlet when the temperature of the fluid in the second fluid passageway is below the threshold temperature, the blocked fluid flow creates a pressure differential between the second passageway and the first passageway, the pressure differential causing the first valve to move to a position in the transverse fluid passageway allowing exclusive flow of fluid from the second passageway to the first passageway through the transverse passageway. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification