| 摘要 |
An improved engine driven air conditioning apparatus for heating and cooling an enclosed space is disclosed. The apparatus includes a compressor linked to a reversing valve. The reversing valve is further linked to a pair of interior heat exchangers disposed in heat exchanging contact with an enclosed space, and a pair of exterior heat exchangers disposed in air passageways linked to the external environment. The reversing valve controls the direction of flow of fluid in the circuit. In one position, fluid flows from the compressor through the reversing valve to the exterior heat exchanger, to the interior heat exchanger and then back to the compressor to cool the enclosed environment. In a second position, the flow is reversed to heat the enclosed environment. The apparatus also includes an engine to drive the compressor, and a cooling circuit associated with the engine. The cooling circuit includes a pair of radiators radiating the heat from the coolant. The radiators are disposed in the air passageways adjacent to the exterior heat exchangers. Each exterior heat exchanger is disposed adjacent one radiator, and both the exterior heat exchangers and the radiators extend substantially throughout the entire cross-sectional area of the air passageways.
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