Air conditioner
AssigneeDaikin Industries, Ltd.
InventorsHiroyuki NAKANO, Shouta AGOU
Life of this patent
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Abstract
An air conditioner includes an outdoor unit including a first heat exchanger and an indoor unit including a second heat exchanger. The first heat exchanger includes a first heat transfer tube and a plurality of first fins. The second heat exchanger includes a second heat transfer tube and a plurality of second fins. The first heat transfer tube, the first fins, the second heat transfer tube, and the second fins are made of aluminum or an aluminum alloy. A first sacrificial layer is provided on a surface of the first heat transfer tube. The first sacrificial layer is lower in potential than a base material of the first heat transfer tube and lower in potential than the first fins. A fin pitch of the first fins is larger than a fin pitch of the second fins.
Claims20
An air conditioner comprising:
- an outdoor unit including a first heat exchanger having
- a first heat transfer tube made of aluminum or an aluminum alloy, and
- a plurality of first fins made of aluminum or an aluminum alloy;
- and
- an indoor unit including a second heat exchanger having
- a second heat transfer tube made of aluminum or an aluminum alloy, and
- a plurality of second fins made of aluminum or an aluminum alloy, wherein
- a first sacrificial layer that is lower in potential than a base material of the first heat transfer tube and lower in potential than the first fins is provided on a surface of the first heat transfer tube, and
- a fin pitch of the first fins is larger than a fin pitch of the second fins.
Dependencies are inferred from the claim text.