Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Heavy Industries Limited

Mitsubishi Rayon Company, Limited

Akihiro Ito

Kazuya Goto

Masateru Hayashi

Masami Taniguchi

Fumio Kondo

Kazuo Ishii

Hideo Kanno

Hidenao Kawai

Hiroshi Iokawa

Kazuhiro Tomimasu

Yasuhiko Hirao

Kouji Fujita

Souichiro Umazume

A laminated heat exchanger including an inlet header having refrigerant passages therein through which a refrigerant to be cooled is fed, an outlet header having refrigerant passages therein through which the cooled refrigerant is discharged, a radiating laminated structure located between the inlet header and the outlet header, the radiating laminated structure being formed by alternately arranging a plurality of refrigerant tubes and fins in layers, each of the refrigerant tubes having a tank section for storing a refrigerant and a passage section in which the refrigerant stored in the tank section is circulated, and a distributing member located in at least one of the refrigerant passages of the inlet header and the outlet header and used to regulate a flow of the refrigerant in the tank section.

Laminated heat exchanger having refrigerant tubes and heads

The present invention provides a propeller fan having a blade trailing edge of a sawtooth shape, in which the flows on the negative pressure side and the pressure side of a blade join gradually, so that the velocity loss is decreased in the vicinity of the trailing edge. As a result, the velocity gradient decreases and the generation of turbulence is reduced as compared with the conventional propeller fan, so that the noise is reduced and the fan efficiency is enhanced.

Propeller fan

The stacked heat exchanger of the present invention has a structure wherein grooves are brazed together to seal the external surface of the coolant passage, further grooves are brazed together to form a partition between the straight incoming and outgoing flow passages, and least one groove in the straight incoming and outgoing flow passage section which groove runs in parallel with the grooves earlier mentioned is formed on the formed plates. With this structure, drain water flows down promptly through these grooves and the splashing of the drain water into the downstream area of the heat exchanger can be prevented.

Stacked heat exchanger

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Aichi-ken, Japan

Akihiro Ito