| 摘要 |
PROBLEM TO BE SOLVED: To provide a throttle valve device suppressing the occurrence of a refrigerant friction sound when performing throttling operation, reducing noises, adapting to various conditions when performing dehumidifying operation, and dispensing with a soundproofing measure with a soundproof material and having excellent silence property. SOLUTION: Filter elements 24, 25, a restriction element 26, and a filter element 27 are arranged in a passage communicating and connecting a first inlet and outlet port 12 with a second inlet and outlet port 13 in a valve close condition of a valve element 20, and an annular fluid injection flow passage 28A along an inner peripheral face of the passage is formed on the most downstream side. COPYRIGHT: (C)2005,JPO&NCIPI
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