Air conditioner
AssigneeMitsubishi Electric Corporation
InventorSangmu Lee
Life of this patent
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Abstract
To increase a heat exchange capacity of an indoor heat exchanger without increasing a pressure loss inside tubes of an outdoor heat exchanger. A heat exchanger is constituted by an indoor machine equipped with an indoor heat exchanger 10 constituted by a plurality of heat transfer tubes 12A, which have a spiral grooves 13A formed with a predetermined lead angle Ra on inner faces of the tubes and are made to pierce a plurality of fins 11, and an outdoor machine equipped with an outdoor heat exchanger 20 constituted by a plurality of heat transfer tubes 22A which have a lead angle Rb of spiral grooves 23A smaller than that of a heat transfer tubes 10A used for the indoor heat exchanger 10 and are made to pierce a plurality of fins 11.
Claims9
An air conditioner comprising:
- an indoor machine equipped with an indoor heat exchanger constituted by a plurality of heat transfer tubes which pierce a plurality of fins, and
- an outdoor machine equipped with an outdoor heat exchanger constituted by a plurality of heat transfer tubes which pierce a plurality of fins, wherein
- in the indoor heat exchanger, the heat transfer tubes and the fins are joined together by expanding the heat transfer tubes and
- a tube expansion rate for expanding the heat transfer tubes is 105.5 to 106.5%.
Dependencies are inferred from the claim text.