| 摘要 |
PROBLEM TO BE SOLVED: To prevent a thermal short circuit in connection piping of a four-way selector valve. SOLUTION: Partition plates 31 formed of a heat insulating material are provided between an intake pipe 2b and gas pipes 2c, 2f connected to the four-way selector valve 23. A discharge pipe 2a, the intake pipe 2b, and the gas pipes 2c, 2f connected to the four-way selector valve 23 are wrapped together in one heat insulating sheet 32, and the discharge pipe 2a and the like are individually sealed. Heat transfer by air is thereby intercepted between the discharge pipe 2a and the intake pipe 2b or the like. COPYRIGHT: (C)2008,JPO&INPIT
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