Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Mitsushita Denki Kabushiki Kaisha

Nobuaki Miyake

Yuji Nakahara

Akira Hashimoto

Hiroyuki Akita

Yasuyuki Nakanishi

Wataru Suzuki

Keisuke Hokazono

Hiroki Okazawa

Akio Matsui

Masahiro Yuya

Masaya Motohashi

Satoru Akutsu

Junichi Ono

Hiroshi Kinoshita

Takuya Ogura

Akio Murata

Yukinobu Karata

Takashi Anamura

Kazuyoshi Takayama

Ken-Ichi Azuma

Yoshihiko Satake

Hiroshi Ito

Toshinori Tanaka

Takashi Nakajima

Hiroshi Yamaguchi

Kazuhiko Baba

Akihiro Daikoku

Takashi Kato

Kyouhei Yamamoto

Tomohiko Takahashi

Hironori Yabuuchi

Yudai Morikawa

Ryuichi Ikeda

Hironori Kuriki

Yukihiko Kawanori

Tomoki Hayashi

Naoki Hashiguchi

Kazuhiro Miya

Fumiaki Tsuchiya

Hirofumi Ouchi

Haruyuki Hasegawa

Yuudai Morikawa

Ryoichi Ikeda

Naoki Kajita

Hiroaki Nishino

Kazuya Omura

Hitoshi Tamayama

Yutaka Ono

Masakatsu Sato

Takenori Aomi

Ryoko Komaki

Keiji Takai

Fumihiko Kusano

Kazunari Tomita

Naoki Kawasugi

Atsushi Terano

Toshimichi Baba

Yusuke Yamaoka

A fin manufacturing method and apparatus includes: a first inter-row slit device that forms, by forming in a thin metal plate having a plurality of openings a plurality of slits extending in a longitudinal direction of the thin metal plate while leaving an uncut portion between the plurality of slits, metal strips partially coupled to each other in a transverse direction; a feed roller and a feeding device that convey, in the longitudinal direction, the metal strips in which the plurality of slits is formed by the first inter-row slit device; and a stacking device that (i) forms fins by cutting the uncut portion via which the metal strips are coupled to each other, to separate the metal strips and by cutting the metal strips at regular length intervals and (ii) stacks the formed fins.

Apparatus for manufacturing fin and method for manufacturing fin

A fin manufacturing apparatus includes: a progressive pressing device that forms, by forming in a metal plate having thermal conductivity a plurality of openings for tube-insertion and a plurality of slits while leaving uncut portions, strips that each have openings along a longitudinal direction of the strip and are partially coupled to each other in a width direction; an inter-row cutting device that separates, by cutting the portions via which the strips are coupled to each other, the strips such that each strip has a width of the fin; a cutoff device that cuts the separated strips to a predetermined length; and a guiding device between the inter-row cutting device and an inter-row slit device that guides and supplies, to the inter-row cutting device, the strips that are partially coupled to each other in the width direction, are arranged in the width direction, and are conveyed in the longitudinal direction.

Device for manufacturing fins and method for manufacturing fins

A heat exchanger includes a flat tube and a plurality of fins. The plurality of fins are arranged on the flat tube and inclined with respect to a longitudinal direction of a cross section perpendicular to an axis of the flat tube. The plurality of fins may be inclined at different angles with respect to the axis of the flat tube. The flat tube may include a straight portion on which the plurality of fins are arranged, and a bend on which at least one fin other than the plurality of fins is arranged. The at least one fin extends perpendicularly to the axis of the flat tube.

Heat exchanger, air conditioner, and apparatus for manufacturing heat exchanger

A refrigerant pipe is provided to be capable of preventing a change in a length by which the refrigerant pipe is inserted after the refrigerant pipe is inserted. The refrigerant pipe includes a heat-exchanger-side pipe having a pipe component insertion flare formed at an end portion of the heat-exchanger-side pipe and at least one protrusion formed on an inner peripheral portion of the pipe component insertion flare, and a pipe component having a smaller outer diameter than an inner diameter of the pipe component insertion flare. A height of the at least one protrusion is greater than a dimension of a clearance defined on the basis of a difference between the inner diameter of the pipe component insertion flare and the outer diameter of the pipe component. The pipe component is inserted into the pipe component insertion flare, and the pipe component has a groove formed by the at least one protrusion.

Refrigerant pipe, method of manufacturing the refrigerant pipe, and heat exchanger including the refrigerant pipe

A refrigerant distributor includes an inflow portion made of aluminum into which refrigerant flows through an inflow pipe, and a distributing portion made of aluminum that distributes incoming refrigerant to a plurality of outflow pipes. The distributing portion includes a main body portion connected to the inflow portion, and a plurality of outflow portions connected to the outflow pipes. The outflow portions are protruded from the main body portion, and are formed integrally with the main body portion.

Refrigerant distributor, and heat pump device having the refrigerant distributor

A sacrifice positive electrode layer is formed conveniently, efficiently, and accurately on the surface of a refrigerant distributor having a complicated shape. Further, during the formation of the sacrifice positive electrode layer, the strength in the surroundings of joined parts is prevented from being lowered by excessive heating. Included are: an applying step of applying flux to remove an aluminum oxide to a surface of a plurality of outflow sections and a distributing section; an alloy disposing step of disposing a zinc-containing aluminum-silicon alloy on the surface to which the flux is applied; a forming step of forming the sacrifice positive electrode layer on the surface by heating the disposed zinc-containing aluminum-silicon alloy; a brazing material disposing step of inserting a plurality of outflow pipes into the plurality of outflow sections, respectively, and disposing an aluminum-silicon alloy brazing material on the surface of the outflow sections; and a brazing step of brazing the plurality of outflow sections with the plurality of outflow pipes, respectively, by heating the aluminum-silicon alloy brazing material.

Method for manufacturing refrigerant distributor, refrigerant distributor manufacturing apparatus, refrigerant distributor, heat exchanger, and air-conditioning device

The motor includes a motor body to rotate a shaft by generating a rotating magnetic field; a bearing supporting the shaft; and a bracket being electrically non-conductive, surrounding an outer periphery of the bearing, and supporting the bearing, wherein the bracket is not in contact with any member formed of conductive material at an outer periphery of the bracket.

Motor and air-conditioning apparatus

Fin-plate for heat exchanger

Heat exchanger tube

Provided is a method for fabricating a molded stator of a rotary electric machine, the method comprising: a lamination step of laminating a plurality of core sheets each having a plurality of core pieces connected to one joining portion via bridge portions, thereby forming a divided-laminated-core group structure; a winding step of winding a coil on a teeth portion of each divided laminated core of the divided-laminated-core group structure; a cutting step of cutting the bridge portions, thereby separating the divided laminated cores wound with the coils; a temporary fixing step of temporarily fixing the divided laminated cores circularly arranged to form a stator; and a molding step of placing, in a mold, the stator into which a mold mandrel is inserted along the inner circumferential surface, and molding an outer circumferential surface of the stator with resin.

Method for fabricating molded stator of rotary electric machine

A laminated core block includes a plurality of core members made of magnetic sheets stacked one on top of another, the plurality of core members including first and second core members which adjoin in a laminating direction, and a thermoplastic resin strand placed between the first and second core members. The thermoplastic resin strand is arranged to pass along one side surface of the first core member, between the first and second core members and along a side surface of the second core member on a side opposite to the aforementioned side surface of the first core member in this order. The first and second core members are bonded to each other by melting and curing the thermoplastic resin strand.

Apparatus for manufacturing laminated core block

Laminated core, method and apparatus for manufacturing laminated core, and stator

The present invention relates to a structure of a stacked stator core formed when rotary motors are manufactured and to a method of manufacturing the stacked stator core. It is possible to improve the workability in the winding process and the productivity of the stator and the rotary motor because the stacked stator core includes a plurality of stator cores, each of which is made up of a prescribed number of stacked sheet magnetic materials, a plurality of yoke membersforming each stator core, a bendable bent portionprovided between the yoke members, and an interconnecting portionfor connecting the plurality of stator coresone another while providing a difference in level, by connecting the top end of one stator core with the bottom end of the other stator core.

Stacked stator core and method of manufacturing thereof, and rotary motor and method of manufacturing thereof

The present invention relates to a structure of a stacked stator core formed when rotary motors are manufactured and to a method of manufacturing the stacked stator core. It is possible to improve the workability in the winding process and the productivity of the stator and the rotary motor because the stacked stator core includes a plurality of stator cores , each of which is made up of a prescribed number of stacked sheet magnetic materials, a plurality of yoke members forming each stator core, a bendable bent portion provided between the yoke members, and an interconnecting portion for connecting the plurality of stator cores one another while providing a difference in level, by connecting the top end of one stator core with the bottom end of the other stator core.

Growing community of inventors

Tokyo, Japan

Nobuaki Miyake