HYBRID WATER HEATER

A heat pump water heater has a tank, a heat source, and a heat pump system. The heat pump system has a refrigerant path, at least a portion of which is in thermal communication with the water tank volume so that heat transfers from refrigerant to the water tank volume. A fan causes air to flow through a housing, and another portion of the refrigerant path includes an evaporator in the housing. Thefan is within the housing and may further be within a second housing. The first housing may comprise a baffle to direct air flow. The fan may be a variable speed fan in communication with a controller, so that the controller controls the fan speed depending on a temperature of the refrigerant. 一种热泵热水器，具有水箱、热源和热泵系统。该热泵系统具有制冷剂路径，所述制冷剂路径的至少一部分与水箱容积热连通，使得热量从制冷剂传递到水箱容积。风扇使空气流过壳体，并且制冷剂路径的另一部分包括位于壳体中的蒸发器。风扇在壳体内，而且可以进一步在第二壳体内。第一壳体可以包括导流板以引导空气流动。风扇可以是与控制器通信的变速风扇，使得控制器根据制冷剂的温度来控制风扇速度。