Mitsubishi Heavy Industries Limited

Shin Watabe

Atsushi Suzuki

Koji Nakado

Minoru Kawada

Ryuhei Tanigaki

Masashi Inoue

Yoshinori Watanabe

Akira Yoshikoshi

Hiroshi Iokawa

Kiyoto Yasui

Hiroyuki Kotou

The present invention relates to an electromagnetic clutch device for a compressor used for air conditioners in vehicles and so forth. The object of the present invention is to provide an electromagnetic clutch device whose pulley can be downsized regardless of the outer diameter of a coil even when the so-called alignment is small. In order to achieve this object, an electromagnetic clutch device according to the present invention comprises a drive shaft forming a part of a compressor mechanism which is accommodated in a housing of the compressor and projecting through a nose of the housing; a drive rotor accommodating a coil for the electromagnetic clutch and rotatably supported on the circumference of the nose by means of a clutch bearing; an armature plate opposing the coil and connected to a projecting end of the drive shaft so as to rotate with the drive shaft; and a pulley fixedly attached to the drive rotor, wherein the pulley is arranged between the housing and the coil.

Electromagnetic clutch device for a compressor

A heat exchanger is constructed by tubes, corrugated fins and head pipes, which are assembled together. Herein, the tube is constructed by bending a flat plate whose surfaces are clad with brazing material to form a first wall and a second wall, which are arranged opposite to each other with a prescribed interval of distance therebetween to provide a refrigerant passage. Before bending, a number of swelling portions are formed to swell from an interior surface of the flat plate by press. By bending, the swelling portions are correspondingly paired in elevation between the first and second walls, so their top portions are brought into contact with each other to form columns each having a prescribed sectional shape corresponding to an elliptical shape or an elongated circular shape each defined by a short length and a long length. The columns are arranged to align long lengths thereof in a length direction of the tube corresponding to a refrigerant flow direction such that obliquely adjacent columns, which are arranged adjacent to each other obliquely with respect to the length direction of the tube, are arranged at different locations and are partly overlapped with each other with long lengths thereof in view of a width direction perpendicular to the length direction of the tube. The tubes, corrugated fins and head pipes are assembled together and are then placed into a heating furnace to heat for a prescribed time.

Heat exchanger

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Nishikasugai-gun, Japan

Shin Watabe