| CPC F25B 41/40 (2021.01) | 9 Claims |
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1. A plate refrigerant pipe comprising:
a first plate made of stainless steel;
a second plate made of stainless steel, wherein the first plate and the second plate are joined at a joining surface to form a refrigerant flow path; and
a coupling pipe, made of copper or copper alloy, attached to one or both of the first plate and the second plate, wherein
the coupling pipe is connected to a refrigerant pipe at a connecting surface of refrigerant pipe,
a material of the coupling pipe is identical to a material of the connecting surface of the refrigerant pipe,
the plate refrigerant pipe further comprises a brazing material that joins the connecting surface of the refrigerant pipe and the coupling pipe to each other,
one or both of the first plate and the second plate have a cylindrical portion,
the coupling pipe is attached to an inner peripheral surface of the cylindrical portion,
an outer peripheral surface of the coupling pipe comprises a first projection that contacts an axial end of the cylindrical portion and sets a position of the coupling pipe in a pipe axis direction of the coupling pipe with respect to the cylindrical portion,
an inner peripheral surface of the coupling pipe comprises a second projection that contacts an end of the refrigerant pipe in a pipe axis direction of the refrigerant pipe and sets a position of the refrigerant pipe in the pipe axis direction of the refrigerant pipe with respect to the coupling pipe,
the first projection is disposed farther from the joining surface than the second projection is, and
the second projection is integrally formed with the coupling pipe such that the second projection blocks the brazing material flowing downward between the inner peripheral surface of the coupling pipe and the connecting surface of the refrigerant pipe.
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