Loading patent…
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsYouichi Hisamori, Mitunori Kurachi, Masaaki Taniguchi, Tutomu Noma, Masao Kohashi, Yoshihiro Sumida
Estimating the term…
To eliminate a fear of electrolytic corrosion even in the case where a heat exchanger to be connected to the outside of the plate-type heat exchanger has a copper piping, and to prevent any damage from being given to the brazed portions of the plate-type heat exchanger at the time of joining pipes and to prevent faults from being generated in joined portions. An intermediate pipe made of a material in which the value of polarization potential becomes lower than that generated between a body of the plate-type heat exchanger and the copper piping is interposed between the plate-type heat exchanger body and the copper piping. Further, the plate-type heat exchanger body is disposed in a position out of a vertical line of a joined portion between the copper piping and the intermediate pipe. Further, a joint constituted by an intermediate pipe and a copper pipe joined in advance through brazing or welding at a temperature higher than a temperature of brazing of the plate-type heat exchanger body is brazed at the same time of brazing of the plate-type heat exchanger body under the condition that the joint is arranged so that the intermediate pipe side of the joint is joined with the end plate of the heat exchanger body.
A plate-type head exchanger comprising:
In a piping joint structure of a plate-type heat exchanger which connects an indoor machine of an air conditioner having a copper piping with a plate-type heat exchanger comprising a first end plate body having a first fluid inlet and a second fluid outlet, a first intermediate plate body having a first fluid communication passage through-hole formed to communicate with said first fluid inlet so as to constitute said first fluid communication passage and a first through-hole formed to communicate with said second fluid outlet, a second end plate body having a first fluid outlet and a second fluid inlet, a second intermediate plate body having a second through-hole formed to communicate with said first fluid outlet and a second fluid communication passage through-hole formed to communicate with said second fluid inlet so as to constitute said second fluid communication passage, a heat exchange plate body having a third through-hole formed to communicate with said first fluid communication passage through-hole and said second through-hole and a fourth through-hole formed to communicate with said second fluid communication passage through-hole and said first through-hole, said heat exchange plate body being interposed between said first and second intermediate plate bodies so as to perform heat exchange between said first and second fluids, said first and second end plate bodies, said first and second intermediate plate bodies, and said heat exchange plate body being stacked on one another so as to be integrated with each other,
Dependencies are inferred from the claim text.