| 摘要 |
PROBLEM TO BE SOLVED: To provide a low heat loss type four-way valve improved in switching operability, and a heat pump device including the same.SOLUTION: A high-pressure three-way valve 10 is constituted of: a cylindrical body 12 including a high-pressure inlet 14; a valve seat 20 including outlets 16, 18 at two portions; pistons 22a, 22b; and a slide valve 26 for switching a communication state between the high-pressure inlet 14 and the outlets. A low-pressure three-way valve 30 is constituted of a check valve formed of a cylindrical body 32, a valve seat 40 including inlets 36, 38 at two portions and including a low-pressure outlet 34 between the inlets, cylindrical guides 42a, 42b, and a valve element 46 for connecting two valve portions 44a, 44b, and switching a communication state between the low-pressure outlet 34 and the inlets 36, 38a. The one outlet 18 of the high-pressure three-way valve 10 is communicated with the one inlet 38 of the low-pressure three-way valve 30 while the other outlet 16 of the high-pressure three-way valve 10 is communicated with the other inlet 36 of the low-pressure three-way valve 30. |
