Hitachi, Ltd.

Hitachi Rail Limited

Takeo Takagi

Hiromi Kobayashi

Haruo Miura

Hideo Nishida

Koji Nakagawa

Yoshiaki Abe

Haruki Sakai

Junichi Kobayashi

Kazuo Kobayashi

Hiroshi Mitsumaki

Katsumi Ishikawa

Ryo Miyake

Takao Terayama

Kiyoshi Nakata

Yasuo Fukushima

Akira Koide

Yasushi Nomura

Masakatsu Hayashi

Toshiyuki Aoki

Masakatsu Sakamoto

Takao Konno

Hiroaki Yoda

Noriyoshi Urushiwara

Tsutomu Hasegawa

Yoshiyuki Takamura

Eiji Sato

Kazutoshi Ogawa

Kento Mochizuki

Tomomi Kanazawa

Shuichi Terakado

Tomoo Hayashi

Takashi Mizumori

Junichi Kaneko

Koichi Tsuzuki

Takeshi Shinomiya

Kuniaki Otsuka

Takafumi Karino

Naoki Kunihiro

Syosaku Watanabe

Daisuke Akimaru

Tomoaki Taguchi

Akihiro Hishida

Hiroshi Miyashiro

Junichi Yazu

Kouichi Takashima

Shigeki Kunii

Hiroyuki Shirata

Masayuki Wada

Yuta Oura

This three-phase AC motor drive device is provided with: a load; an inverter devicefor driving the load; an MCOK_A_connected between the inverter deviceand the load and electrically connecting or disconnecting the inverter deviceto or from the load; a voltage detectorhaving terminals respectively connected to the circuits of at least two phases to detect the voltages between the three phases; and a current detectorfor detecting the currents of the three phases. In the connection from the inverter deviceto the load, the inverter device, the MCOK_A_, the voltage detector, the current detector, and the load are aligned in this order.

Three-phase AC motor drive device, rail vehicle equipped with same, and three-phase AC motor drive method

A chemically analyzing apparatus includes a plurality of reaction containers, a reaction container holder for holding the plurality of reaction containers and for supplying a sample and reagent at predetermined positions, a plurality of reagent containers for holding reagent adapted to be supplied into the reaction containers, a reagent container holder provided above the reaction container holder, for holding the plurality of reagent containers, a measuring part for measuring physical properties of the sample, a liquid feed mechanism provided in a lower part of each of the plurality of reagent containers, for supplying a predetermined quantity of reagent from each of the reagent container into the associated reaction containers by means of the liquid feed mechanism. With this arrangement, it is possible to provide a chemically analyzing apparatus incorporating a reagent supply mechanism which can prevent reagent from being uselessly consumed, which does not substantially require washing liquid, which does not require periodical disassembly and washing, and which can easily change the feed quantity of reagent.

Chemical analysis apparatus

A discarded industrial product recycling system capable of acquiring pertinent data required for processings of discarded industrial products such as discarders, reception dates, persons responsible for disposal, disposal dates and so forth for selecting proper disposal for each of the discarded industrial products while automatizing the article data acquisition to a possible maximum for enhancing the enhance disposal rate. An electronic tag (radio-frequency identifier tag) is attached to each of discarded industrial products to allow data required for the processing to be written and read by readers/writers. At a time point and a place where a discarded industrial product is received, basic data required for the processing of that article is written in the electronic tag. Pertinent processing route for each of the manufactured articles is decided by reading the data from the electronic tag while writing additional data in the tag as occasion requires. Properties of plastic material are measured, results of which are written in the electronic tag. Classification of component parts resulting from disassembling is carried out by affixing an electronic tag to each palette, reading the data from the electronic tag attached to the discarded industrial product and writing a code of assortment destination for the parts carried by the palette in the electronic tag affixed thereto on the basis of the data read from the electronic tag attached to the discarded industrial product.

Method and system for recycling discarded industrial products

Purification apparatus

A compressor is disclosed are disposed in which a diffuser flow passage is curved to a radial direction in the vicinity of an outlet of a mixed-flow impeller, and guide vanes are disposed in which each is of a height (projecting into the diffuser flow passage in a direction substantially transverse to the direction of flow) that is less than the meridional flow passage width such that the minimum inlet radius is larger than a maximum radius at the outlet of the mixed-flow impeller and are arranged in the form of a circular cascade at the curved portion on a flow passage surface of the diffuser plate located on a shroud side. Thus, it is possible to keep uniform the flow within the diffuser and to enhance the performance of the compressor. In addition, the axial length of the compressor may be shortened to thereby make the compressor compact in size.

Mixed flow compressor

A centrifugal compressor has diffusers which convert a high velocity, low pressure stream of fluid which flows out of an impeller to a high-velocity high-pressure flow due to the action of a purality of stator blades disposed near the outer periphery of the impeller. In this compressor, the portion of the stator blade or of an auxiliary blade which is provided in the diffuser located on the side of a front shroud is disposed closer to the impeller than the portion thereof located on the side of a main shroud, and the leading edge of the stator blade is thus inclined from the portion thereof located on the side of the main shroud to the portion thereof located on the side of the front shroud. The configuration of the front edge of a stator blade or of an auxiliary blade which is provided in the diffuser is so improved as to restrict back flow which occurs on the side of the front shroud when the flow rate is small and to lower the minimum flow rate. Furthermore, an auxiliary blade and an intermediate blade are disposed between the adjacent stator blades, and the leading edge of the auxiliary blade is so improved as to enlarge the operation range of the diffuser and to improve volume control greatly.

Centrifugal compressor

A single-shaft multi-staged turbo compressor capable of compressing a gas at a large flow rate and with a high pressure ratio has a first impeller group composed of at least one oblique-flow impeller and a second impeller group composed of at least one centrifugal impeller. The impellers of the first and second groups are mounted on a common impeller shaft in a back-to-back relation.

Turbo compressor

A diffuser centrifugal compressor of a comprising a plurality of stator blades provided outside an impeller thereof, and which converts kinetic energy of fluid from the impeller into pressure energy by operation of the stator blade. The diffuser is provided with sub-blades near the inner ends of the stator blades, and intermediate blades near outer ends of and between the stator blades.

Diffuser for centrifugal compressor

A capsule having a cylindrical shell for containing goods to be transported, and a cover member adaped to be fitted over one end of the shell. The cover member is made from a flexible material and is provided on the leading end of the shell. The provision of the cover member of a flexible material avoids damage to or deformation of the capsule which would otherwise be caused by collision against the preceding or the next following capsule, and reduces the resistance offered to the movement of the capsule by the tubular passageway through which the capsule is moved.

Hydraulically transported capsule

Growing community of inventors

Tsukuba, Japan

Takeo Takagi