Mitsubishi Denki Kabushiki Kaisha

Kiyoshi Sakuma

Takayuki Yoshida

Yu Seshimo

Yoshiaki Tanimura

Kaoru Yamamoto

Satoru Kotoh

Masao Fujii

Kunio Matsushita

Shin'ichi Suzuki

Katuyuki Aoki

Hiromi Sano

Kenichi Unno

Tomoko Oguma

Hideaki Koizumi

Makoto Yamada

Hiroyuki Umemura

Ikuo Tsukamoto

Masao Hujii

Naoki Tanaka

Hitoshi Iijima

Akio Fukushima

Fumio Matsuoka

Kisuke Yamazaki

Yasuo Nakashima

Mitsuo Umehara

Yasuo Sato

Katsuyuki Aoki

Tetsuji Okada

Ken Morinushi

Yasuo Sone

Tomohumi Tezuka

Hiroshi Kasagi

Kazuhiro Maruyama

Takao Komai

Yuichi Akiyama

Junji Tamari

Isamu Nakazima

Tetuo Sugiyama

Hiroki Adachi

Minoru Shibata

A mechanism for controlling the flow of air from an air-conditioning unit includes a row of guide vanes which are pivotally held by an outlet nozzle. The guide vanes are located at the lower end of an air course which has been formed within a body of the air-conditioning unit. The guide vanes control the flow of air in both left and right directions. This new design is characterized in that the angle of inclination of each guide vane progressively changes toward the end of the row. The air flow is controlled accurately in both the left and right directions so that the air flow reaches the desired location.

Air-direction adjusting apparatus for air-conditioning equipment

In an apparatus in which a blow-out nozzle is provided at a lower end of an air course formed in the inside of a body of the air-conditioning equipment and blown air passed through the air course is blown out of a blow-outlet while guided in the left/right direction by a plurality of parallel guide vanes pivotally held by the blow-out nozzle, wherein each vane has a C-shaped annular pivotal bearing and a sleeve fitted into the bearing, a shaft extending from an inner wall of the nozzle being inserted into the sleeve, the shaft having claws which project from the upper end portion of the shaft so as to retain the sleeve.

Air-direction adjusting apparatus in air-conditioning equipment

A fin-and-tube heat exchanger comprises a fin plate, a heat exchanger tube having portions extending through the fin plate, a plurality of fin collars formed in the plate, wherein louvers are provided so as to surround the tube portions except areas nearest to the collars, the louvers are in parallel with one another and project from alternately both surfaces of the plate, the louver which is located at the trailing edge side and at a position near to a central line of the tube bank is longitudinally extended so as to be along the collars and has opposite rising ends extending from the plate slanted toward the corresponding tube portions at an angle of 35 deg or below to the flow direction of the fluid, and the louver which is located at a position nearer to the trailing edge is also longitudinally extended and has opposite rising ends extending from the plate slanted toward the corresponding tube portions at an angle of 35 deg or above to the flow direction of the fluid so that the angle between the rising ends slanted at an angle of 35 deg or above and the rising ends slanted at an angle of 35 or below is 35 deg or below.

Heat exchanger

A heat exchanger tube for evaporation or condensation, comprising:

Heat exchanger tube for evaporation or condensation

Heat radiation plate

A heat exchanger comprises a plurality of regularly corrugated fins placed one over another in layers at regular pitches in a back-to-back arrangement so as to form alternate wide and narrow fluid passage between the adjacent corrugated fins, and each having a plurality of small through holes, a plurality of collars formed in a staggered arrangement, and an annular area not having any small through hole and formed so as to surround the root of each collar; and pipes for passing a secondary fluid therethrough, each inserted through the collars of the layers of the corrugated fins. The height of the collar from the lower surface of the annular area corresponds to the pitch between the adjacent corrugated fins, and thereby the corrugated fins can be assembled at regular pitches simply by placing one over another. The pipes are expanded after being inserted through the collars so that the pipes are firmly and closely joined to the collars for satisfactory heat transmission between the fins and the pipes.

Heat exchanger for an air-conditioning apparatus

A multiroom air conditioner has a plurality of indoor heat exchangers connected to a single outdoor heat exchanger. A reversible expansion valve is installed on a liquid-side branch pipe for each of the indoor heat exchangers, and a solenoid valve is installed on a gas-side branch pipe for each indoor heat exchanger. Temperature sensors are provided on the liquid-side branch pipes, on the gas-side branch pipes, and on the outlet side during cooling of the outdoor heat exchanger. A pressure sensor or a temperature sensor detects the saturation temperature on the high-pressure side of the compressor. Based on the saturation temperature on the high-pressure side of the compressor, the temperature on the outlet side during cooling of the outdoor heat exchanger, and the temperatures in the liquidside branch pipes, a controller controls the expansion valves so as to obtain a target degree of subcooling during cooling and heating. The controller can also control the expansion valves so that the temperatures in each of the branch pipes are approximately equal to one another.

Multiroom air conditioner

A heat exchanger comprises a plurality of perforated and regularly corrugated heat transfer plates arranged in a ridge-to-ridge and furrow-to-furrow arrangement, so as to form primary fluid passages each consisting of alternate expanded sections and narrowed sections arranged along the direction of flow of a primary fluid, and a plurality of pipes for passing a secondary fluid therethrough, the pipes penetrating through and across the heat transfer plates. Oblique guide grooves are formed in the surfaces of each heat transfer plates to facilitate the downward flow of the condensate condensed over the surfaces of the heat transfer plates, the grooves being inclined closer to the vertical than to the horizontal to facilitate downward flow of any vapor condensed on the plates from the primary fluid whereby the heat transfer plates dry quickly for efficient heat exchange between the primary and secondary fluids.

Heat exchanger with corrugated heat transfer plates

A refrigeration cycle system includes a compressor 1, a condenser 2, an expansion device 3 and an evaporator 5 connected in series with each other, and charged with a heteroazeotropic refrigerant mixture comprising R12 and R13. A fractionating vessel 6 and an electromagnetic valve 7 are provided in predetermined portions of the system for separating the R12 and R13 refrigerant components during an ordinary freezing mode and for mixing them during a rapid freezing mode.

Dual refrigerant cooling system

Growing community of inventors

Shizuoka, Japan

Kiyoshi Sakuma