HEAT EXCHANGER
First Claim
Patent Images
1. A heat exchanger for use in a refrigeration unit, said heat exchanger comprising:
- a metal plate having a first face and a second face; and
a metal tube for containing refrigerant attached to said first face of said metal plate by a plurality of spot welds,wherein said spot welds are laser spot welds and said welds extend through only a portion of the thickness of said plate.
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Accused Products
Abstract
A heat exchanger (102) for use in a refrigeration unit (101), comprising a metal plate (201) and a metal tube (202) for containing refrigerant (203). The metal plate (201) has a first face (204) and a second face (205), and the tube (202) is attached to said first face (204) of the metal plate by a plurality of spot welds (405,406). The spot welds are laser spot welds and said welds extend through only a portion of the thickness of the plate (201), such that the second face (205) of the plate is undisturbed by the welds.
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Citations
20 Claims
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1. A heat exchanger for use in a refrigeration unit, said heat exchanger comprising:
- a metal plate having a first face and a second face; and
a metal tube for containing refrigerant attached to said first face of said metal plate by a plurality of spot welds, wherein said spot welds are laser spot welds and said welds extend through only a portion of the thickness of said plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- a metal plate having a first face and a second face; and
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14. A method of manufacturing a heat exchanger for a refrigeration unit, comprising the steps of:
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obtaining a metal plate having a first face and a second face; and attaching a metal tube for containing refrigerant to said first face of said metal plate by a plurality of spot welds, wherein said spot welds are made by a laser and said welds extend through only a portion of the thickness of said plate.
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15. A refrigeration unit having a heat exchanger, said heat exchanger comprising:
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a metal plate having a first face and a second face; and a metal tube for containing refrigerant attached to said first face of said metal plate by a plurality of laser spot welds. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification