Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Mitsubishi Electric Home Appliance Co., Ltd.

Kunihiko Kaga

Satoru Kotoh

Akira Ishibashi

Shoji Yamada

Masaru Kanaoka

Shuji Ogawa

Katsuhisa Ootsuta

Hiroyuki Akita

Shinichi Wakamoto

Takayuki Yoshida

Hideharu Tanaka

Tadashi Saito

Hiroki Murakami

Hidemoto Arai

Tomoko Suzuki

Sakuo Sugawara

Tetsurou Ogushi

Shinji Nakadeguchi

Akira Doi

Tatsuo Seki

Hiroyuki Sakaiya

Eriko Kumekawa

Toshinori Ohte

Masahiro Arinaga

Goro Yamanaka

Takeshi Mori

Takashi Matsumoto

Shinichi Suzuki

Tetsuya Takahashi

Hiroshi Yoshikawa

Hitoshi Kikuchi

Masaru Takada

Tomoya Fukui

Mitsuhiro Shirota

Kenichi Sakoda

Yasuaki Kato

Satoshi Michihata

Hajime Sotokawa

Shigetoshi Ippoushi

Akira Takamori

Toshihisa Imai

Takanori Imai

Yoshinori Tanikawa

Yoichi Sugiyama

Yasuyoshi Makino

Youichi Sugiyama

Yoshimi Iwamura

Kazuyoshi Toya

Takuya Mukoyama

Fumiharu Yabunaka

Hiroaki Tsukahara

Riichi Kondou

Shinji Nakamoto

Tadashi Fukushima

Eiji Kogure

Takao Oshima

Toru Murai

Takuya Mukouyama

An indoor unit includes a heat exchanger provided on the downstream side of a fan and formed with a plurality of lower end portions in a vertical cross section from the front side to the back side of a casing, a plurality of drain pans provided below the lower end portions of the heat exchanger and configured to collect drain water occurring on the heat exchanger, and a drain channel provided between the drain pans and configured to be a flow channel of the drain, and a connecting port to which a drain hose configured to drain the drain water collected by the drain pans to the outside of the casing, and one of the drain pans is arranged to a level equal to or higher than the level of the other drain pan, and the drain channel is provided on the drain pan arranged on the back side of the casing.

Indoor unit of air-conditioning apparatus and air-conditioning apparatus

A heat exchanger including plate fins stacked at respective intervals relative to one another, and heat exchanger tubes penetrating the fins in. The heat exchanger exchanges heat between first and second fluids flowing, respectively, inside and outside the heat exchanger tubes. Each of the fins includes a substantially planar main body and cut-raised portions extending from the main body and disposed at an upstream side of flow of the second fluid. Each of the cut-raised portions corresponds to a respective heat exchanger tube and includes first and second opposed side ends connected to the main body of the fin. The first side end is nearer to the corresponding heat exchanger tube than is the second side end, the first side end is longer than the second side end, and the first side end is disposed at a downstream side of the flow of the second fluid, facing the corresponding heat exchanger tube.

Heat exchanger of plate fin and tube type

A blower that can reduce noise and enhance efficiency by improving a blade structure of the blower used for, for example, an outdoor equipment of an air conditioner. An impeller includes plural blades attached to a peripheral surface of a boss at intervals in a peripheral direction, and a trailing edge of the blade has a protrusion-shaped part in which its central part in a radial direction is curved to expand to a suction side. With such a structure, a discharge velocity of air can be made uniform along the radial direction of the blade, and it becomes possible to reduce noise and to enhance efficiency.

Blower including blades attached to a boss

A cooling apparatus with high strength and good heat radiation characteristics. In the cooling apparatus, a heat exchanger is joined to an evaporator disposed on the lower side in a face to face manner; a containing unit of the heat exchanger includes a heat exchanger high temperature liquid outlet, and a two-phase fluid inlet in a joint portion with the evaporator; an outlet header of the heat exchanger includes an intermediate liquid outlet at a joint portion with the evaporator; and the evaporator includes a two-phase fluid outlet in the joint portion with the heat exchanger in opposition to the two-phase fluid inlet of the containing unit, and including an intermediate liquid inlet at the joint portion with the heat exchanger in opposition to the intermediate liquid outlet of the outlet header.

Cooling apparatus and power converter

A heat exchanger includes fins arranged in parallel with each other with a predetermined spacing along the rotational axis direction of a blower. Heat exchanger tubes are inserted into the fins to form rows along a longitudinal direction of the fins connected to each other along the airflow direction, to form refrigerant channels. A branch portion is provided to connection portions of the heat exchanger tubes to increase or decrease the number of paths in the refrigerant channels. Refrigerant flows through each of the refrigerant channels passing through paths mutually different at least at one portion between the refrigerant inlet and the refrigerant outlets, flows along one direction from the windward-side row to the leeward-side row, or from the leeward-side row to the windward-side row in the airflow direction, in sequence between rows. One-path portion is provided in the most windward-side row heat exchanger tubes. The fins are in close contact with a refrigerant outlet case when the heat exchanger is operated as a condenser, and a connection piping are thermally separated by separation means.

Air conditioner and manufacturing method therefor

A heat exchanger including plate fins and, the tubes fins being stacked at respective intervals relative to one another, and heat exchanger tubes penetrating the fins in a fin-stacking direction. The heat exchanger exchanges heat between fluids flowing, respectively, inside and outside the heat exchanger tubes, through the heat exchanger tubes and the fins. Each of the fins includes cut-raised portions with a bridge shape having leg and beam segments. The cut-raised portions associated with each of the heat exchanger tubes are located substantially only in a region of the fin satisfying(1&#x2212;&#x3c6;)&#x3c6;&#x3e;0.5,where Ws is spread width of the cut-raised portions in a direction (column direction) extending along an end of the fin on the upstream side of the second fluid, and D is outer diameter of the heat exchanger tube. Dp is alignment pitch of the heat exchanger tubes in the column direction.

A blower includes: an impeller on which there are arranged axial flow bladesmounted at circumferential intervals to an outer peripheral surface of a boss; a case surrounding the impeller; and a bell mouth cylindrically constricted to guide gas into the case, wherein an inner diameter of the bell mouth is smaller than an outer diameter of the impeller. Further, each blade has, in the radial direction, a sweepforward wing portion situated on the boss side and exhibiting a positive advance ratio value, and a sweepback wing portion situated on the outer peripheral side of the blade and exhibiting a negative advance ratio value, with the arc length of each blade increasing from the boss side toward the outer peripheral side. Therefore, it is possible to achieve an improvement in ventilation efficiently, through an increase in static pressure and to achieve a reduction in noise.

Blower

Device for radiating heat generating electronic parts, an electronic equipment having a heat radiating construction, and an electronic apparatus

Electronic apparatus and electronic equipment used therefor

A machining head of a laser machining apparatus comprises a main assist gas nozzle at the center portion of the machining head for supplying a main assist gas and one or more annular sub assist gas nozzles surrounding the main assist gas nozzle, whose jet outlet of the innermost diameter is larger or equal to the jet outlet of main assist gas. The jet outlet of the main assist gas nozzle is positioned at upstream of said jet outlets of the respective sub assist gas nozzle. According to the above construction, the jet gas pressure and the jet gas velocity vary continuously at the assist gas jet outlet and the jet gas pressure and flow velocity fluctuation of the main assist gas are increased.

Machining head and laser machining apparatus

An air outlet has a plurality of vertical vortex generating structures,in a triangular shape arranged so as to be oriented at an angle &thgr; with respect to diffused air.

Device for controlling diffused air

An air outlet has a plurality of vertical vortex generating structures 21 in a triangular shape arranged so as to be oriented at an angle .theta. with respect to diffused air.

An opposed flow heat exchanger comprising partitions including a corrugated portion for forming passages in a wavefront direction, and flat portions for taking in or out air flows from a predetermined direction at opposite ends of the corrugated portion in the wavefront direction; and flat shape holding plates having a length in a direction of the passages which is not longer than a length of the partitions; wherein the partitions and the shape holding plates are alternately layered so that the corrugated portion of each of the partitions and the shape holding plates contact together, and the flat portion of each of the partitions faces to the flat portion of a partition adjacent thereto, thereby independently forming the passages through the partitions.

Opposed flow heat exchanger

A heat exchanger, in which an alternating flow of supply air and exhaust air are supplied in opposite directions between a plurality of stacked heat exchanging members, is characterized in that the heat exchanging members each is composed of a first paper member having a moisture permeability and corrugated in the width direction and having flat portions at the longitudinally opposite ends flattened under pressure, and a pair of second paper members having one end joined to the flat portions and the other end side extending flatly in the longitudinal direction to define a header defining portion for defining a header portion, so that the number of the parts can be decreased and the assembly can be made easier, whereby a heat exchanger with an improved productivity can be provided. A method for manufacturing a heat exchanger is also disclosed.

Heat exchanger and method of manufacturing a heat exchanging member of a

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Tokyo, Japan

Kunihiko Kaga