Hydraulic heater valve
First Claim
Patent Images
1. A valve assembly including:
- a housing having an inlet for receiving fluid and first and second outlets for delivering the fluid from the valve assembly;
thermal and priority valve members shiftable in the housing; and
a sleeve disposed in the housing that guides the thermal and priority valve members;
wherein the thermal valve member is shiftable by first and second springs between a first position permitting fluid flow from the inlet to the priority valve member and a second position blocking fluid flow, at least one of the springs being responsive to temperature changes of fluid flowing through the housing,wherein the priority valve member is shiftable against a biasing force by pressure at the inlet above a predetermined pressure, the priority valve member being shiftable between a first position blocking flow from the inlet to the second outlet and a second position permitting flow, andwherein the sleeve includes a first opening for receiving fluid from the thermal valve member when the thermal valve member is in the first position, a second opening communicating with the first opening, a third opening communicating with the second opening, and an annulus communicating with the first and second openings.
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Accused Products
Abstract
Provided is a valve assembly having a thermal valve member and a priority valve member that are shiftable to first and second positions in response to a temperature and pressure of a fluid flowing through the valve assembly. Consequently, the valve can provide for flow through a heating orifice under low temperature, high pressure conditions so that pressure drops in fluid lines coupled to the valve assembly may be prevented or reduced, allowing fluid lines with small diameters to be used in an aircraft or other fluid flow system, thereby reducing the weight of the aircraft or fluid flow system.
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Citations
16 Claims
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1. A valve assembly including:
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a housing having an inlet for receiving fluid and first and second outlets for delivering the fluid from the valve assembly; thermal and priority valve members shiftable in the housing; and a sleeve disposed in the housing that guides the thermal and priority valve members; wherein the thermal valve member is shiftable by first and second springs between a first position permitting fluid flow from the inlet to the priority valve member and a second position blocking fluid flow, at least one of the springs being responsive to temperature changes of fluid flowing through the housing, wherein the priority valve member is shiftable against a biasing force by pressure at the inlet above a predetermined pressure, the priority valve member being shiftable between a first position blocking flow from the inlet to the second outlet and a second position permitting flow, and wherein the sleeve includes a first opening for receiving fluid from the thermal valve member when the thermal valve member is in the first position, a second opening communicating with the first opening, a third opening communicating with the second opening, and an annulus communicating with the first and second openings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification