| 摘要 |
PURPOSE:To contrive to achieve dehumidifying even in defrosting operation period by a method wherein the first and second reversible type refrigerant cycle heat exchangers are arranged mutually in parallel on an air passage, the air flowed through the first and second heat exchanger is mixed and blowed-off. CONSTITUTION:A refrigerant discharged from a compressor 5 is flowed through a four-way valve 12, condensed in the first heat exchanger 6, evaporated in the second heat exchanger 7 after reducing of pressure in a throttling device 13, then sucked into the compressor 5 through again the four-way valve 12. By the action of a refrigerating cycle, the air A flowed into the first heat exchanger 6 is heated by exchanging the heat with the refrigerant, then changed to the air B by reducing the relative humidity. Meanwhile, the air A flowed into the second heat exchanger 7 is cooled and reduced the humidity by heat exchanging with the refrigerant, then changed to the air C by reducing the absolute humidity. The air B and air C are sucked to a blower 11, changed to the air D after mixing, finally, blowed-off from a blow-off opening 4.
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