在热泵系统四通换向阀后的排气管上加旁通毛细管和在气液分离器中加过冷管。
A by-pass capillary tube was added on the discharge pipe behind the four-way valve and a tube was added in an accumulator in a heat pump system to solve the problem.
该阀一般安装在气缸与换向阀之间靠近气缸的管路上，使气缸的排气不经换向阀直接排出，达到气缸快速换向的目的。
General installed in the valve cylinder and the cylinder valve between the tube close to the road, so that the exhaust cylinder without a valve directly into to the cylinder for the purpose of rapid.
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