Resin heat exchanger unit, method for manufacturing the resin heat exchanger unit, and heat exchanger
AssigneeRP Topla Limited
InventorsMinoru Ojiro, Yaushiko Hata, Hiroyuki Minezaki, Tomoyoshi Sakamoto, Hiroki Katagiri
Life of this patent
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Abstract
In a resin heat exchanger unit, a resin pipe having straight portions and curved portions and a plurality of resin fins are integrally molded and there can be realized high reliability, high heat exchange efficiency, and a simple manufacturing process. The resin heat exchanger unit includes a resin pipe (1), which has straight portions (2) and curved portions (3) provided alternatively and continuously, and a plurality of resin fins (4) connected to the pipe (1), the pipe (1) and the fins (4) being integrally injection-molded.
Claims7
A method for manufacturing a resin heat exchanger unit, comprising:
- injecting a molten resin into a pipe cavity of a mold, the pipe cavity having on its one end a pressure port provided with a floating core and on its other end and outlet;
- pressure-injecting a pressurized fluid through the pressure port after the injection of the molten resin;
- and
- moving the floating core to the outlet side, and, at the same time, extruding the molten resin from the outlet, so as to obtain the resin heat exchanger unit, wherein
- the resin heat exchanger unit comprises:
- a pipe formed of the resin and having straight portions and curved portions provided alternatively and continuously;
- and
- a plurality of fins formed of the resin and connected to the pipe, the pipe and the plurality of fins being integrally injection-molded.
Dependencies are inferred from the claim text.