| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent the deterioration of heat exchange performance during an intermediate period of a heat exchanger for a freezer such as a heat exchanger of an outdoor device for an air conditioner, and to promote the improvement of energy-saving performance (APF: annual performance factor) by reducing a total input power amount including an input power amount for a fan. <P>SOLUTION: The heat exchanger for the freezer such as the heat exchanger of the outdoor device of the air conditioner is divided into a plurality of heat exchangers including at least an upper stage side heat exchanger where a coolant does not remain and a lower stage side heat exchanger where the coolant remains with a plurality of paths of upper and lower stages as references, and each of branched pipes corresponding to the respective heat exchangers has an electronic expansion valve and a heat exchange sensor, and uses them to adjust coolant pressures corresponding to the respective heat exchange sections, and thus the deterioration of heat exchange performance during the intermediate period (intermediate load) is prevented, and the total input amount including the input power amount for the fan can be reduced to promote the improvement of energy-saving performance (APF). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
