Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Heavy Industries Limited

Mitsubishi Electric Corporation

Ihi Corporation

Mitsubishi Denki K.k.

Yoshihiro Tanabe

Hiroaki Makino

Yoshihiro Sumida

Kazuhiro Ishida

Hideaki Nagatomo

Takashi Ikeda

Tomohiro Numajiri

Yasuhiro Wada

Tadashi Saito

Yutaka Kodama

Hidenori Ishioka

Toshiyuki Kubono

Hiroyuki Jinnai

Kouichi Nakagawa

Tsukasa Takagi

Satoshi Hirakuni

Atushi Mochiduki

Hidetomo Nakagawa

Kazuaki Isono

Koutarou Inose

Tetsuya Mochizuki

Fumio Matsuoka

Kunihiro Morishita

Kenta Kawahara

Kisuke Yamazaki

Yasuo Imaki

Tomofumi Tezuka

Makoto Yoshihashi

Shigeki Onishi

Tatsuya Mochizuki

Kengo Hyoma

Shigeki Oonishi

Hajime Hiraoka

Tukasa Takagi

Two welding wires whose current values are individually variable are placed along a groove of steel plates, and two operations are repeated, the first operation including: passing substantially the same current through both welding wires; generating a cathode spot in front of a molten pool by one welding wire's arc on a welding-direction forward side; and cleaning the steel plates' surfaces by the arc, and the second operation including: passing a pulse current having a higher value than that of the welding wire through the other welding wire, so that a cathode spot is generated in the molten pool by each welding wire's arc to newly form a molten pool; and advancing both welding wires in the welding direction to move the cathode spot to the newly-formed molten pool, and at the same time performing welding within an area where oxides on the steel plates' surfaces are removed.

MIG welding method and MIG welding device

A compressor-impeller fixing nut has a tubular shape, and includes: a curved-surface shaped portion disposed in a first range from a first end side in an axial direction, the curved-surface shaped portion having an outer diameter which increases toward a second end side in the axial direction and including an outer peripheral surface having a curved shape which protrudes outward in a radial direction in a cross section along the axial direction; and a nut portion disposed in a second range closer to the second end side from the first range in the axial direction, the nut portion having an outer peripheral surface with a nut shape. An expression (Dmax&#x2212;Dmin)/2&#x3c;L is satisfied, where L is a length of the first range in the axial direction, and Dmax is a maximum value and Dmin is a minimum value of the outer diameter of the curved-surface shaped portion in the first range.

Compressor-impeller fixing nut, impeller assembly, and supercharger

An outdoor unit includes a casing having a bottom plate and is configured such that at least a part thereof is made of metal, a compressor provided within the casing to compress a flammable refrigerant, an outdoor heat exchanger provided within the casing to exchange heat between the refrigerant and outside air, and an electric heater provided on an upper surface of the bottom plate. The power consumption of the electric heater is 250 W or less.

Outdoor unit and air-conditioning apparatus

If blades have been struck by wind that has reached a power reduction start wind speed that is lower than a conventional cut-out wind speed at which torque acting on a main shaft reaches the torque limit, a wind turbine generator performs torque reduction control for causing the change in the torque when wind speed is higher than the power reduction start wind speed to be different from change in the torque when wind speed is lower than the power reduction start wind speed so as to prevent the torque from exceeding the torque limit at the conventional cut-out wind speed. For example, if the wind striking the blades reaches the power reduction start wind speed, the wind turbine generator sets the slope of change in torque lower than that before the power reduction start wind speed is reached. Accordingly, the wind turbine generator can reduce the load acting on a device and suppress a reduction in power even if the blades are struck by strong wind.

Controller for wind turbine generator, wind turbine generator, and method of controlling wind turbine generator

A mark is displayed to a manually scrapped component capable of being disassembled manually without disassembling or crushing by machine at the time of discard or recovery of an electric appliance after use, and the manually scrapped component is manually scrapped from a product, and in the case of crushing by machine thereafter, the mark display is a mark capable of separation into plural kinds of substance on which a cost burden is imposed and valuable substance after recovery, and scrapping can be performed easily at low cost.

Recovery method of electric appliance

Recovery method for an electric appliance

In a refrigerating cycle incorporating a second flow controller having a throttle section, which is composed of an inlet noise eliminating space, an inlet side porous permeable member communicating in a refrigerant flow direction, an orifice, an outlet side foamed metal, and an outlet noise eliminating space, and a multi-directional valve, a gas/liquid two-phase refrigerant is caused to pass through the throttle section.

Refrigerating cycle device, air conditioner, choke, and flow rate controller

In a refrigerating cycle incorporating a second flow controller having a throttle section, which is composed of an inlet noise eliminating space, an inlet side porous permeable membercommunicating in a refrigerant flow direction, an orifice, an outlet side foamed metal, and an outlet noise eliminating space, and a multi-directional valve, a gas/liquid two-phase refrigerant is caused to pass through the throttle section.

Refrigerating cycle apparatus, air conditioning apparatus, throttle device and flow controller

To obtain an air conditioning apparatus which provides a favorable atmosphere to the ear and saves energy even if the suction resistance of the impeller becomes high due to such as dust in the air conditioning apparatus. The air conditioning apparatus is provided with an impeller which is formed by a plurality of vanes and a ring for supporting the plurality of vanes, and includes a nozzle portion formed by a stabilizer and an air outlet, a cross flow fan formed by a guide wall, and a heat exchanger. The ratio H/&phgr;D of the outside diameter &phgr; D of the impeller to the height H of the air conditioning apparatus is 2.2 or above and 3.0 or below.

Air conditioner

A refrigerating cycle apparatus including an inverter driven compressor with controllable speed of rotation, a four-way valve, an indoor heat exchanger, a pressure reducing device, outdoor heat exchanger, a defrosting condition detector for detecting a frosting state of the outdoor heat exchanger in a heating operation, a defrosting operation controller for carrying out a defrosting operation based on a detection signal from the defrosting condition detector and having a minimum operable frequency controller for controlling a minimum operable frequency for the compressor on restarting after completion of the defrosting operation and/or a starting speed controller for controlling a starting speed for the compressor based on a detection signal from the defrosting condition detector on restarting after completion of the defrosting operation in order to provide proper lubrication after a defrost operation.

Refrigerating cycle apparatus

The invention concerns a reversible rotary compressor which can compress refrigerant in either of the forward and reverse directions, without providing a valve mechanism in a closed container. In a reversible rotary compressor including a cylinder, a rolling piston, and a slide vane, two inlet/outlet ports are formed in a space between the outer surface of the rolling piston and the inner surface of the cylinder in a state that the two inlet/outlet ports are disposed on both sides of the slide vane. The two inlet/outlet ports are closed by the rolling piston when the rolling piston is positioned at the top dead center and fully opened when the rolling piston is positioned at the bottom dead center. Two refrigerant pipes, coupled with the inlet/outlet ports, are provided in the side wall of the cylinder. The two refrigerant pipes are closed by the rolling piston when the rolling piston when the rolling piston is positioned at the top dead center and fully opened when the rolling piston is positioned at the bottom dead center.

Reversible rotary compressor and reversible refrigerating cycle

Growing community of inventors

Tokyo, Japan

Yoshihiro Tanabe