| 摘要 |
<p>A thermostat apparatus is disclosed. The thermostat apparatus according to an embodiment of the present invention comprises a cover 36 including a high-temperature coolant inlet port 32, a high-temperature coolant outlet port 34, and a temperature sensitive chamber 30 disposed between the high-temperature coolant inlet port and the high-temperature coolant outlet port; a first housing 42 including a valve seat 38 at a lower part thereof; a second housing 50 including a heater connection port 46 at one lateral side thereof and a low-temperature coolant outlet port 48 at the other lateral side; a temperature sensitive driving unit 52 including a piston shaft 60 extended downward passing through a plug 58; and a valve shaft 70 disposed perpendicularly to the piston shaft 60 of the temperature sensitive driving unit 52 and mounted with a valve 72 elastically supported by a spring 76 and thereby brought into close contact with the valve seat 38 of the first housing 42, so as to control temperature of the engine 78 by supplying low- temperature coolant cooled in the radiator 80 by an opening and closing operation of the valve 72 to the engine. According to this, since the temperature sensitive driving unit 52 is statically mounted in the temperature sensitive chamber 30 formed between the high-temperature coolant inlet port 32 and the high-temperature coolant outlet port 34 of the cover 36 such that the whole surface of the temperature sensitive driving unit 52 is exposed to the high-temperature coolant flowing from the high-temperature coolant inlet port 32 to the high-temperature coolant outlet port 34, the temperature sensitive driving unit 52 is capable of operating the valve shaft 70 by detecting the varied temperature of the high-temperature coolant flowing from the engine 78.</p> |
