| 摘要 |
Heat pump/air conditioning converter apparatus for directing a refrigerant from a compressor to a first heat exchanger located within a building and a second heat exchanger located outside the building for selectively cooling and heating the first heat exchanger. The apparatus has a housing within which a reversing valve, a liquid refrigerant flow control valve system, an expansion valve and an accumulator tank is incorporated. The housing has a number of cavities for receiving the various components of the valves and tank, and a number of passageways for directing the refrigerant to the components to minimize the number of external connections. The reversing valve incorporates an axially slideable rod having a large main piston positioned centrally thereon and a pair of smaller valve opening/closing piston members at each end, one end controlling the hot high pressure gaseous refrigerant and the other end controlling the low pressure relatively cool gaseous refrigerant. The liquid refrigerant flow control valve includes a ball valve moved by high pressure fluid and a pair of check valves in the low pressure liquid path from the expansion valve. The accumulator is disposed between the gaseous portion of the apparatus and the liquid portion of the apparatus and includes accessible filter elements in the liquid and the gaseous path.
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