Hitachi, Ltd.

Hitachi Chemical Company, Ltd.

Osaka Gas Company Limited

Toho Gas Co., Ltd.

Toshio Hatada

Takahiro Daikoku

Kenichi Kasai

Takao Ohba

Akira Yamagiwa

Hitoshi Matsushima

Noriyuki Ashiwake

Susumu Iwai

Toshiki Iino

Tadakatsu Nakajima

Shigeo Ohashi

Hiroshi Inouye

Takayuki Atarashi

Takao Senshu

Hideyuki Kimura

Shigeyuki Sasaki

Tetsuya Tanaka

Motohiro Sato

Atsuo Nishihara

Heikichi Kuwahara

Akio Idei

Yuji Shirai

Akira Arai

Yoshifumi Kunugi

Tomihisa Oouchi

Toshihiro Komatsu

Yoshihiro Kondou

Sumiyoshi Takeda

Shinji Tanaka

Kanji Otsuka

Yoshihiro Kondo

Fumiyuki Kobayashi

Kensaku Oguni

Shizuo Zushi

Shigeo Sugimoto

Hiromu Yasuda

Tamotsu Tsukaguchi

Masaaki Itoh

Atsushi Matsuzaki

Kyoji Kohno

Fumio Harada

Minetoshi Izushi

Takeo Tanaka

Yutaka Imaizumi

Naoto Katsumata

Minoru Sato

Yasuo Ohsone

Hajime Futawatari

Junichi Kobayashi

Akira Tanaka

Kazuo Sato

Hiroshi Yamada

Yukio Honda

Yutaka Watanabe

Kazuji Yamada

Hiroshi Inoue

Takeshi Harada

Masatsugu Arai

Toshihiko Fukushima

Hiroshi Ito

Munehisa Kishimoto

Yoshihiro Takada

Kenta Kumagai

Akiomi Kohno

Mitsuo Miyamoto

Michiharu Honda

Akihiro Takanashi

Hirokiyo Terada

Katsumi Matsubara

Hiroichi Shinohara

Shinichi Shimode

Kenzi Machizawa

Junichi Kaneko

Yoshihiko Mochizuki

Keizou Kawamura

Kyuhei Ishibane

Yuuji Shirai

Nobuo Kawasaki

Tatsuya Sugiyama

Michihito Watarai

Akiyoshi Iida

Kazuo Morita

Taketoshi Mochizuki

Akira Atsumi

Shigeaki Kuroda

Makoto Nagai

Toshio Hatsuda

Hitoshi Yoshidome

Naoki Shikazono

Masao Imanari

Mitsuhiro Shikida

Yoshito Hayashi

Yutaka Hayashi

Hironobu Ueda

Satomi Kobayashi

Keizo Kawamura

Tamio Shimizu

Hiromi Tsuji

Sigeo Sugimoto

An ice thermal storage type air-conditioner and an ice thermal storage tank, in which unused portions in the ice thermal storage tank is reduced to enhance an ice filling rate in the ice thermal storage tank or to prevent excessive icing from damaging a heat transfer unit. An ice thermal storage type air-conditioner in which heat exchangers are installed in the ice thermal storage tank 1, the heat exchangers having a heightwise size extending from a bottom of the ice thermal storage tank 1 to near a top of a container, and comprising a plurality of flat-shaped plate-type heat transfer units 14 arranged therein in layered manner in a thicknesswise direction

Ice thermal storage type air-conditioner and ice thermal storage tank

A heat exchanger composed by overlapping a plurality of heat exchanger units each of which is formed by inserting a plurality of fins over one or a plurality of heat transfer tubes. The fins are worked so that a pair of opposed fins of the overlapped heat exchanger units are brought into contact with each other at one or more points. This heat exchanger constitutes an air conditioner when the heat exchanger units are overlapped in a direction of gravity.

Heat exchanger and air conditioner using same

There is disclosed a liquid-cooled electronic device. Semiconductor devices are mounted on a substrate of a semiconductor module immersed in a cooling liquid. A wire-like member is provided in the vicinity of a cooling medium ejection port of each cooling medium supply member which cools a respective one of the semiconductor devices by a jet of the cooling liquid. With this arrangement, the flow of the cooling liquid downstream of the wire-like member is disturbed to promote the boiling over the entire surface of the semiconductor device, and when the semiconductor device is to be cooled, a transient temperature rise is reduced at the time of starting the energization of the semiconductor device, thereby stabilizing the temperature of the semiconductor device.

Liquid-cooled electronic device

A highly reliable electronic apparatus free from condensation in the cabinet of the apparatus. The electronic apparatus has printed circuit boards on which heat emitting semiconductor devices are mounted and a fan. The electronic apparatus further comprises a hygrometer for measuring the relative humidity and dew-point temperature of the cooling air that is introduced into the cabinet through an opening, a surface temperature sensor for sensing the temperature of the surface of the semiconductor devices, an internal temperature sensor for sensing the internal temperature of the semiconductor device, dehumidifier and heater means made up of a heat pump and an outdoor unit, and a controller for controlling the dehumidifier means and the heater means so that the relative humidity is less than 100% and the dew-point temperature is less than the surface temperature of the semiconductor devices.

Air-cooled electronic apparatus with condensation prevention

An air-cooled information processing apparatus has a plurality of units and a casing accommodating the units. At least one cooling air supply section and at least one cooling air discharge section are provided in the casing, for supplying cooling air into the apparatus and for discharging the air therefrom. A partition member divides the space inside the casing so as to define at least two cooling air flow channels between the cooling air supply section and the cooling air discharge section. At least one main fan unit is disposed in each of the cooling air flow channels. The cooling air flow channels include at least one first cooling air flow channel in which at least two units from among the plurality of units are disposed in parallel with each other with respect to the direction of flow of cooling air, and at least one second cooling air flow channel in which at least two units from among the plurality of units are arranged in series to each other along the flow of cooling air. This cooling arrangement ensures optimum cooling for different types of units in the apparatus, without being accompanied by rise in the noise level, rate of discharge of air, power consumption and production cost.

Air-cooled information processing apparatus having cooling air fan,

Semiconductor devices are fixed on a substrate by solder and a semiconductor module having an enclosed structure is formed by the substrate, flanges and a housing. Two groups of heat conducting members, each having fins respectively in contract with the semiconductor devices and an inner wall of the housing are attached to the semiconductors. A fin thickness of each fin of the two groups of heat conducting members is comparatively thick, a fin height is low and the respective fins of the respective opposed heat conducting members have with very small clearances therebetween. A liquid as a heat conducting medium is enclosed in the semiconductor module. The liquid level of the semiconductor module is controlled such that it contacts a uppermost semiconductor device in the semiconductor module in a vertical arrangement. Further, valve mechanisms for introducing and removing a cooling fluid are provided at a top face and a bottom face of a space formed in the semiconductor module. The mass production capability of the heat conducting members is improved by providing such highly rigid fins, and improved cooling function is provided by firmly introducing the cooling medium to the respective fins while permitting the module to be reduced in size.

Low thermal resistant, fluid-cooled semiconductor module

Heat generated at heat generating components is efficiently transported to a wall of a metal box serving as a heat dissipation section to cool the heat generating components even in an apparatus, in which box the heat generating components together with other components are mounted. The heat generating components and the heat dissipation section are connected to each other through a thermal transport device having a flexible structure. The heat generating components and the box are readily connected to each other irrespective of the arrangement of components, and heat is efficiently transported by driving the liquid. In the heat dissipation section, because the heat generating components and the wall of the metal box are thermally connected to each other, a high heat dissipation capacity is obtained as heat is diffused extensively into the wall due to a high thermal conductivity of the metal box.

Cooling unit for electronic equipment

The disclosed invention aims at providing a semiconductor module structure which has a high ability of absorbing thermal deformation, is excellent in radiating ability and enables an easy maintenance operation. To this end, in the semiconductor module of the invention thermal conductor members are provided, each of which has an area of contact with a semiconductor device or an inner surface of a housing and has opposed heat transfer surfaces. A radiator is formed integrally on the housing. With this structure, large thermal deformation resulting from a high heat production density design can be absorbed, and at the same time heat from semiconductor devices can be efficiently radiated.

Semiconductor module

A flat shaped header having a heat receiving side is attached to a semiconductor element mounted on a circuit board. The header having the heat receiving side is connected to another header having a heat receiving side attached to a plurality of heat radiating fins so as to form a heat exchanging radiator which heat radiating fins are installed at a peripheral portion of a body of electronic equipment. The heat generated by the semiconductor element is transmitted by liquid moving between the headers via flexible tubes and then to the heat radiating fins, which heat is discharged outside of the body of equipment. Since the flat shaped header and the flexible tubes are employed, a high heat generating semiconductor element and the heat radiating fins are thermally connected with ease without being influenced by the configurational condition in the equipment even when many semiconductor elements are mounted inside a small space.

Electronic equipment and lap-top type electronic equipment

An electronic apparatus having a plurality of semiconductor devices which produce heat during operation, with a heat sink having a plurality of tabular or pin-type fins is provided on each semiconductor device. Nozzles are associated with the heat sinks so as to supply a cooling fluid into the heat sinks. The heat sinks are so arranged that all these heat sinks guide and discharge the cooling fluid in the same direction. A breadth of the respective nozzles, as measured in the direction (x-direction) of the flow and discharge of the cooling fluid determined by the heat sink is less than that of the associated heat sink. A width of the nozzle, as measured in the direction (y-direction) perpendicular to the x-direction is smaller than that of the associated heat sink. A space between adjacent nozzles provide a discharge passage of an ample cross-section which reduces resistance encountered by the heated cooling medium to be discharged therethrough.

Electronic apparatus

A forced air cooling apparatus having a blower for blowing air taken in from an intake surface or inlet of the blower to be blown against an electronic device in an installation wherein the blower is mounted for operation on a casing or a rack, and in which the apparatus has a flow regulating plate vertically intersecting the intake surface that is installed immediately before the intake surface. With this construction, eddy air current flow in the vicinity of the intake surface is prevented and the cooling ability obtained from the blower is optimized to thereby attain the effect that the electronic devices can be efficiently cooled without requiring the same separation distance between an intake surface of the blower and a wall surface of the frame or casing in which the blower is installed, as compared with a conventional installation of the same equipment in the same casing without the flow regulating plate.

Forced air cooling apparatus having blower and air current regulating

An electronic equipment has a cooling structure in which air discharged from heat sinks can be recovered without any leakage and compact blow ducts and discharge ducts are disposed in a narrow space. A supply opening and a discharge opening for cooling air are independently formed in a heat sink. A plurality of supply branched ducts and discharge branched ducts are combined in a comb-like shape along the axis of the ducts. Ejection openings for cooling air are formed on each of the supply branched ducts in positions corresponding to each of the heat sinks. Such ejection openings are closely connected to the supply openings for cooling air of the heat sinks. On the other hand, recovery openings for cooling air are formed on each of the refrigerant discharge ducts in a position corresponding to each of the heat sinks. Such recovery openings are closely connected to the discharge openings for gas refrigerant of the heat sinks.

Cooling apparatus for electronic equipment

An electronic computer cooling system having a cooling apparatus to cool an electronic computer and cooling members for thermally connecting semiconductor devices whose operating speeds are raised by cooling to a low temperature source of the cooling apparatus. Circuit boards onto which the semiconductor devices and the like constructing the electronic computer are mounted and the cooling apparatus such as a refrigerating apparatus and the like are compactly enclosed in a single casing. Or, the circuit boards and the cooling apparatus are compactly enclosed in separate detachable casings, respectively. Thus, a structure in which desired semiconductor devices can be certainly cooled by using the cooling members is obtained.

Cooling system of electronic computer using flexible members in contact

A cooling device according to the present invention, in which a space is formed by means of flat electrodes and side plates disposed on the ends of the flat electrodes, and a flexible film fastened in that space in a shape of the letter S, is fixed to a semiconductor package so that one of the flat electrodes is fitted on the semiconductor package. The respective flat electrodes are alternately powered to move the S shaped section of the flexible film.

Cooling device for semiconductor packages, having flexible film heat

A cooling apparatus for electronic equipment for improving the reliability of the equipment by making uniform the temperature distribution of heat generating devices mounted on the electronic equipment, more particularly on a computer and for reducing the working process required at the time of performing a maintenance of a printed circuit board in the electronic equipment by stacking, in a frame, the electronic printed circuit boards on which the heat generating devices, such as a CPU and memories, are mounted at predetermined intervals. The cooling apparatus has a fan fastened to one wall surface of a chamber and a plurality of jet cooling devices formed on the surface opposing the wall surface. The jet cooling devices are formed in parallel to the printed circuit boards. The jet cooling devices are slits, or nozzles or jet stream ducts extending among the printed circuit boards and are so formed as to supply cooling air in a jet stream state to each heat generating device. Therefore, the cooling air can be concentrated to locally cool the printed circuit board including the device that generates heat of a large heating value. Hence, the temperature rise in the heat generating devices can be made uniform.

Jet cooling apparatus for cooling electronic equipment and computer

Growing community of inventors

Tsuchiura, Japan

Toshio Hatada