| 摘要 |
PURPOSE: A coolant pressure controller for project type displayer is provided to effectively control coolant pressure by preventing the entrance of outer vapor into the coolant and the leakage of the coolant due to the volume expansion of the coolant according to the temperature increase. CONSTITUTION: The present invention discloses a coolant pressure controller for project type displayer comprising: a housing(26) having an air room(22) and plural holes(26a); a thermal elastic member(21) deformed according to thermal change; a valve member(23) opening and closing the fluid passage between the air room and the coolant by opening and closing the holes; a guiding member(24) guiding the valve member; and an elastic member(25) applying recovery force toward the valve member.
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