Heat exchanger plate
A heat exchanger plate which has a plate body formed from at least two plate elements and at least one connecting piece for a cooling fluid. The plate body and connecting piece are joined together using soldering. The connecting piece has a joining portion which is joined in a receiving portion of the plate body formed between the plate elements. A solder resist limits the flow of solder when producing the solder connection. The solder resist is able to be formed by a sealing metal, which is arranged on the joining portion of the connecting piece in front of and/behind a solder material applied to the joining portion. The solder resist is able to be formed by an annular bead resting on the end face of the receiving portion.
1 . A heat exchanger plate, comprising:
a plate body comprising at least two plate elements; and
at least one connecting piece for a cooling fluid, wherein
the at least one connecting piece is joined to the at least two plate elements by a solder connection,
the at least one connecting piece comprises a joining portion which is joined in a receiving portion of the plate body between the at least two plate elements,
the joining portion comprises thereon a solder resist, and
the solder resist comprises a sealing metal with a higher melting temperature than a solder material of the solder connection.
2 . The heat exchanger plate according to claim 1 , wherein the solder resist is, in a longitudinal direction of the joining portion, adjacent to the solder connection on the joining portion.
3 . The heat exchanger plate according to claim 1 , wherein the solder resist comprises an annular bead on an end face of the receiving portion.
4 . The heat exchanger plate according to claim 3 , wherein the annular bead is integrally formed with the at least one connecting piece.
5 . The heat exchanger plate according to claim 1 , wherein the joining portion comprises a circular cross-section.
6 . The heat exchanger plate according to claim 1 , wherein the joining portion comprises an elliptical cross-section.
7 . The heat exchanger plate according to claim 1 , wherein the joining portion comprises a rectangular cross-section with rounded corners.
8 . The heat exchanger plate according to claim 1 , wherein the joining portion and the receiving portion each comprise two longitudinal portions with different cross-sections.
9 . The heat exchanger plate according to claim 1 , wherein the at least one connecting piece comprises a coupling portion on an opening side and configured to connect a cooling fluid line.
10 . The heat exchanger plate according to claim 9 , wherein the at least one connecting piece further comprises an abutment body which is an annular bead in the coupling portion.
11 . The heat exchanger plate according to claim 1 , wherein, in a longitudinal direction of the joining portion, the solder connection is between the solder resist and the plate body.
12 . The heat exchanger plate according to claim 1 , wherein, in a longitudinal direction of the joining portion, the solder resist is between the solder connection and the plate body.
13 . The heat exchanger plate according to claim 1 , wherein
the joining portion comprises thereon a further solder resist, and
in a longitudinal direction of the joining portion, the solder connection is between the solder resist and the further solder resist.
14 . The heat exchanger plate according to claim 1 , wherein
the at least one connecting piece further comprises an annular bead on an end face of the receiving portion, and
in a longitudinal direction of the joining portion, the solder connection is between the solder resist and the annular bead.
15 . The heat exchanger plate according to claim 1 , wherein
the at least one connecting piece further comprises an annular bead on an end face of the receiving portion, and
in a longitudinal direction of the joining portion, the solder resist is between the solder connection and the annular bead.