Fail safety coolant control valve
First Claim
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1. A fail-safe coolant control valve, comprising:
- a valve housing provided on an outer surface thereof with at least two ports, the valve housing having therein an internal space communicating with the ports;
a valve member rotatably installed in the internal space of the valve housing;
an actuator rotating the valve member; and
a fail-safe unit rotating the valve member depending on a temperature of a coolant in the valve housing when a failure occurs,wherein the fail-safe unit comprises;
a thermostat including wax contracting or expanding depending on the temperature of coolant drawn into the internal space of the valve housing, and a temperature responding cylinder linearly moved upward or downward by the contraction or expansion of the wax; and
a rotating conversion part integrally formed on a portion of the valve member, the rotating conversion part converting the upward or downward linear movement of the temperature responding cylinder into rotation of the valve member,wherein the rotating conversion part has a first inclined surface capable of making contact with a lower end of the temperature responding cylinder when the temperature responding cylinder is linearly moved by the expansion of the wax, the first inclined surface including a first top dead point and a first bottom dead point disposed below the first top dead point, and, as the lower end of the temperature responding cylinder linearly moves along the first inclined surface between the first top dead point and the first bottom dead point, the valve member is rotated,wherein the valve member includes a partition formed in a horizontal direction intersecting a longitudinal direction of a valve shaft provided in a medial portion of the valve member, an internal space of the valve member being partitioned into a first hollow space and a second hollow space by the partition,wherein the rotating conversion part is provided on an upper surface of the partition, andwherein the thermostat is provided in the first hollow space, the first hollow space disposed above the second hollow space in a direction parallel with the valve shaft.
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Abstract
Disclosed herein is a fail-safe coolant control valve. The fail-safe coolant control valve includes a valve housing, a valve member, an actuator, and a fail-safe unit. The valve housing is provided on an outer surface thereof with at least two ports. The valve housing has therein an internal space communicating with the ports. The valve member is rotatably installed in the internal space of the valve housing and rotates via an actuator. The fail-safe unit rotates the valve member depending on a temperature of a coolant in the valve housing when a failure occurs.
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Citations
7 Claims
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1. A fail-safe coolant control valve, comprising:
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a valve housing provided on an outer surface thereof with at least two ports, the valve housing having therein an internal space communicating with the ports; a valve member rotatably installed in the internal space of the valve housing; an actuator rotating the valve member; and a fail-safe unit rotating the valve member depending on a temperature of a coolant in the valve housing when a failure occurs, wherein the fail-safe unit comprises; a thermostat including wax contracting or expanding depending on the temperature of coolant drawn into the internal space of the valve housing, and a temperature responding cylinder linearly moved upward or downward by the contraction or expansion of the wax; and a rotating conversion part integrally formed on a portion of the valve member, the rotating conversion part converting the upward or downward linear movement of the temperature responding cylinder into rotation of the valve member, wherein the rotating conversion part has a first inclined surface capable of making contact with a lower end of the temperature responding cylinder when the temperature responding cylinder is linearly moved by the expansion of the wax, the first inclined surface including a first top dead point and a first bottom dead point disposed below the first top dead point, and, as the lower end of the temperature responding cylinder linearly moves along the first inclined surface between the first top dead point and the first bottom dead point, the valve member is rotated, wherein the valve member includes a partition formed in a horizontal direction intersecting a longitudinal direction of a valve shaft provided in a medial portion of the valve member, an internal space of the valve member being partitioned into a first hollow space and a second hollow space by the partition, wherein the rotating conversion part is provided on an upper surface of the partition, and wherein the thermostat is provided in the first hollow space, the first hollow space disposed above the second hollow space in a direction parallel with the valve shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification