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发明公开
CN108369039A 制冷循环装置及制冷循环装置的控制方法 有权

制冷循环装置及制冷循环装置的控制方法
摘要：
制冷循环装置包括压缩机(10)、第一及第二热交换器(20、40)、膨胀阀(30)、四通阀(91)以及控制装置(100)。四通阀(91)能够在第一方向与第二方向之间切换制冷剂流动的方向，该第一方向是制冷剂从压缩机(10)向第一热交换器(20)供给并且制冷剂从第二热交换器(40)向压缩机(10)返回的方向，该第二方向是制冷剂从压缩机(10)向第二热交换器(40)供给并且制冷剂从第一热交换器(20)向压缩机(10)返回的方向。控制装置(100)为了从制冷剂沿第二方向流动的除霜运转切换为制冷剂沿第一方向流动的制热运转而控制四通阀(91)，并且执行了使从第二热交换器(20)向压缩机(10)输出的制冷剂的过热度上升的制热准备控制之后，开始制热运转。
摘要（英）：

A refrigeration cycle device that includes a compressor (10), first and second heat exchangers (20, 40), an expansion valve (30), a four-way valve (91), and a control device (100). The four-way valve(91) is configured to be able to switch the flow direction of a refrigerant between a first direction, in which the refrigerant is supplied from the compressor (10) to the first heat exchanger (20) and returned to the compressor (10) from the second heat exchanger (40), and a second direction, in which the refrigerant is supplied from the compressor (10) to the second heat exchanger (40) and returned to the compressor (10) from the first heat exchanger (20). After controlling the four-way valve (91) to switch from a defrost operation, during which the refrigerant flows in the second direction,to a heating operation, during which the refrigerant flows in the first direction, and performing heating preparation control that increases the degree of superheat of the refrigerant outputted fromthe second heat exchanger (40) to the compressor (10), the control device (100) initiates the heating operation.

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