| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems on an additional heat exchanger additionally disposed in a piping system of a condenser in an outdoor unit of an air conditioner, that the additional heat exchanger has no effect in heating, though it has effect of reduction of power consumption only in cooling, and a heat-cut operation frequently occurs due to freezing and frost formation of the condenser of the outdoor unit, when an outside air temperature is low in winter. <P>SOLUTION: This heating switch device for the additional heat exchanger is provided to automatically switch the additional heat exchanger on the basis of difference in pressure of a refrigerant by valve switching based on combination of a check valve and a pilot valve, so that the additional heat exchanger is positioned between the condenser and an expansion valve similarly as conventional one in cooling, and positioned between an evaporator at an indoor unit side and the expansion valve in heating, and the additional heat exchanger is provided with a throttle branch pipe to take pressure balance by disposing a throttle in a branch pipe of the pipe to operate two additional heat exchangers in parallel. <P>COPYRIGHT: (C)2012,JPO&INPIT |
