Mitsubishi Denki Kabushiki Kaisha

Eiichi Ozaki

Kazushige Nakao

Tsuneo Yumikura

Masaki Ikeuchi

Tetsurou Ogushi

Takashi Kobayashi

Hiroaki Ishikawa

Manabu Hasegawa

Mihoko Shimoji

Akira Yao

Koichi Hirao

Jiro Yoshizawa

A communication device includes a communication circuit mounted on a printed substrate and having a heat generating element; a shield casing covering the communication circuit and shielding electromagnetic waves; a housing accommodating the shield casing and the printed substrate; a heat diffusing member mounted along an inner wall of the shield casing diffusing heat in a planar direction; and a heat insulating layer disposed between the shield casing and an inner wall of the housing.

Cooling structure of communication device

Inner peripheral grooves for transporting a liquid of a working fluid in the longitudinal direction of a first wick are provided along the first wick which transports the liquid contained in the evaporator to a heating portion in the evaporator by capillary force, and a liquid supply portion for supplying the liquid of the working fluid is further provided to the inner peripheral grooves. Therefore, the liquid of the working fluid can be efficiently supplied to the inner peripheral surface of the first wick with a simple structure, so that a loop type heat pipe which can be constantly stably operated can be obtained.

Loop type heat pipe

A heat and mass transfer device for transmitting heat between a fluid flowing within a pipe and a solution flowing on the outside of the pipe. The device comprises at least one vertically upright tubular pipe and a U-shaped folded metal fin strip twisted helically around the periphery of the pipe. The spacing of the fins on the pipe is such that a pulsating flow of the solution flowing on the outside of the pipe is achieved.

Heat and mass transfer device

An improved mass transfer heat exchanger in which heat transmission surfaces are more effectively used and having excellent mass transmission characteristics. Heat transmission pipes are arranged vertically in a tank, extending through a partition board dividing the tank into upper and lower chambers. A solution lead-in pipe supplies a high-density solution to be subjected to heat exchange to the upper chamber, and a pump draws a low-density solution obtained by mass exchange out of the lower chamber and delivers a part thereof to the upper chamber. The upper and lower chambers are communicated through a return pipe which delivers to the lower chamber an intermediate-density solution obtained by mixing the high-density solution and a surplus of the low-density solution in the upper chamber. A vapor lead-in pipe supplies vapor to the lower chamber. The intermediate-density solution flows down the heat transmission pipes, passing through gaps between the partition boards and heat transmission pipes.

Mass transfer heat exchanger

A steam generating and condensing apparatus having a steam generating chamber in which a diluted solution flowing from an absorption device and containing a refrigerant absorbed therein flows outside of the pipes of a steam generating heat exchanger to evaporate the refrigerant from the diluted solution with a hot fluid flowing through the pipes of the steam generating heat exchanger, and a steam condensing chamber in which the refrigerant steam supplied through a partition from the steam generating chamber is condensed by a steam condensing heat exchanger. A double-cylinder assembly is provided composed of outer and inner cylinders, with the inner cylinder being divided by a dispersing end plate into upper and lower chambers serving as a dispersing diluted solution chamber and the steam generating chamber, respectively. The inner and outer cylinders jointly define a space in which the steam condensing chamber is disposed. The partition has eliminators on an upper portion thereof. The dispersing diluted solution pool is provided with a diluted solution inlet pipe. The steam generating chamber has a concentrated solution outlet pipe in a lower portion thereof.

Growing community of inventors

Tokyo, Japan

Eiichi Ozaki