| 摘要 |
A heat pump water heater includes a compressor, a water storage tank, a heat exchanger, an expansion device, and an evaporator. The water storage tank has an exterior surface and an interior volume. The heat exchanger includes an external section and an internal section. The heat exchanger is secured to the water storage tank such that the exterior section is in contact with the exterior surface in a heat exchange relationship and the internal section is positioned within the interior volume and is configured to exchange heat with water in the water storage tank. The compressor, the heat exchanger, the expansion device, and the evaporator are connected in series. The external section is configured to receive refrigerant from the compressor, the internal section is configured to supply refrigerant to the expansion device, and the external section is connected in series with the internal section. |
