초록 ▼

A heat exchanger for conducting a fluid comprises a plurality of heat transfer tubes, a plurality of fins sandwiched by the heat transfer tubes, and first and second header pipes fixedly and hermetically mounted to the heat transfer tubes. A pair of union joint devices are disposed in the first and

A heat exchanger for conducting a fluid comprises a plurality of heat transfer tubes, a plurality of fins sandwiched by the heat transfer tubes, and first and second header pipes fixedly and hermetically mounted to the heat transfer tubes. A pair of union joint devices are disposed in the first and second header pipes respectively. Each of the union joint devices comprises a brazed area wherein one end of a fluid passage disposed therein is brazed to a hole formed on the header pipe. A space is created around the brazed area for observing a condition of brazing and insuring a flux therein. Thereby, the heat exchanger has completely hermetic connections between the union joint and header pipes and is easily examined by an operator to detect any improper brazing between the union joint and the header pipes.

대표청구항 ▼

[ What is claimed is:] [1.] A heat exchanger for conducting a fluid comprising:a plurality of heat transfer tubes each having opposite first and second ends;first and second header pipes fixedly and hermetically mounted to the first and second ends, respectively; anda pair of union joint means conne

[ What is claimed is:] [1.] A heat exchanger for conducting a fluid comprising:a plurality of heat transfer tubes each having opposite first and second ends;first and second header pipes fixedly and hermetically mounted to the first and second ends, respectively; anda pair of union joint means connected to said first and second header pipes respectively for linking said heat exchanger to an external element of a fluid circuit, each of said union joint means comprising:a union element;a fluid passage member disposed in said union element;a brazed area wherein one end of said fluid passage member is brazed to a hole formed in said first and second header pipes; andwherein said union joint means has a space formed around said brazed area for observing the brazed area, said space extending substantially completely around said area where said fluid passage member is brazed to the hole formed in said header pipe, said space facilitating the flow of flux to said brazed area to effect a more secure connection.