Thermostat and cooling system having the same
First Claim
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1. A thermostat comprising:
- a thermostat housing having an inlet and an outlet;
an internal housing having a main valve hole and a fail-safe hole, wherein the internal housing is disposed within the thermostat housing and has a main chamber, which communicates with the inlet of the thermostat housing, inside the internal housing;
a wax housing disposed inside the internal housing and having a first wax and a second wax;
a first valve selectively opening or closing the main valve hole according to expansion or shrink of the first wax;
a second valve selectively opening or closing the fail-safe hole according to expansion or shrink of the second wax; and
a coolant passage, through which coolant flowing through the fail-safe hole flows out to the outlet of the thermostat housing, defined between the thermostat housing and the internal housing.
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Abstract
A thermostat includes: a thermostat housing having an inlet and an outlet; an internal housing having a main valve hole and a fail-safe hole, wherein the internal housing is disposed within the thermostat housing and internal housing and has a main chamber communicating with the inlet of the thermostat housing; a wax housing disposed within the internal housing and having a first wax and a second wax; a first valve selectively opening or closing the main valve hole according to expansion or shrink of the first wax; and a second valve selectively opening or closing the fail-safe hole according to expansion or shrink of the second wax.
12 Citations
12 Claims
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1. A thermostat comprising:
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a thermostat housing having an inlet and an outlet; an internal housing having a main valve hole and a fail-safe hole, wherein the internal housing is disposed within the thermostat housing and has a main chamber, which communicates with the inlet of the thermostat housing, inside the internal housing; a wax housing disposed inside the internal housing and having a first wax and a second wax; a first valve selectively opening or closing the main valve hole according to expansion or shrink of the first wax; a second valve selectively opening or closing the fail-safe hole according to expansion or shrink of the second wax; and a coolant passage, through which coolant flowing through the fail-safe hole flows out to the outlet of the thermostat housing, defined between the thermostat housing and the internal housing. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cooling system comprising:
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a coolant pump supplying a coolant to an engine; an integrated thermal management valve receiving the coolant from the engine and distributing the coolant, wherein the integrated thermal management valve has a thermostat mounted thereto; a radiator connected with the integrated thermal management valve and the coolant pump; a controller controlling operations of the integrated thermal management valve, wherein the thermostat comprises; a thermostat housing having an inlet and an outlet; an internal housing having a main valve hole and a fail-safe hole, wherein the internal housing is disposed within the thermostat housing and has a main chamber, which communicates with the inlet of the thermostat housing, therein; a wax housing disposed within the internal housing and having a first wax and a second wax; a first valve selectively opening or closing the main valve hole according to expansion or shrink of the first wax; a second valve selectively opening or closing the fail-safe hole according to expansion or shrink of the second wax; an electric heater configured to selectively expand the first wax; and a coolant passage, through which coolant flowing through the fail-safe hole flows out to the outlet of the thermostat housing, defined between the thermostat housing and the internal housing. - View Dependent Claims (9, 10, 11, 12)
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Specification