Hitachi, Ltd.

Hitachi Automotive Systems, Ltd.

Hitachi High-tech Corporation

Mitsuhiro Matsuzawa

Tadashi Sano

Yuichi Iwase

Nobuaki Kobayashi

Eiji Ishii

Takahiro Saito

Kazuki Yoshimura

Akihiro Yamazaki

Sachio Sekiya

Hiroshi Kusumoto

Shigenori Togashi

Masafumi Miyake

Takushi Miyakawa

Haruyoshi Yamamoto

Yoko Kokugan

Michiharu Watanabe

Mariko Miyazaki

Shinji Hasebe

A solid-liquid separating method and system for separating a processing object into solid and liquid, is simplified by using fewer devices. A solid-liquid separating system includes a processing tank that houses a processing object, a first and a second heat exchanger, a material A supplying means, a collecting tank, a closed system including the first and second heat exchangers, a compressor, and an expansion valve, and a material B that circulates while a state is changed in this system. A material A that is gaseous at normal temperature and normal pressure, can dissolve oil when liquefied, and does not dissolve water is gasified in the first heat exchanger while being separated from the oil, is liquefied in the second heat exchanger, and the liquefied material A is supplied to the processing tank by the material A supplying means. The oil is collected in the tank from the first heat exchanger.

Solid-liquid separating system and solid-liquid separating method

A fuel injection valve includes a valve seat, a valve element, and a plurality of swirl fuel injection passages. The plurality of swirl fuel injection passages are divided into a first swirl fuel injection passage group that forms a first spray and a second swirl fuel injection passage group that forms a second spray that is oriented in a direction different from a first direction.

Fuel injection valve

Provided is a fuel injection valve which can be easily processed and can realize sufficient atomization while suppressing spreading of spray. In the fuel injection valve according to the present invention, when a nozzle plateand a first direction-in which fuel is sprayed are projected onto a virtual plane perpendicular to a central axis line of the fuel injection valve along an opening and closing valve direction of a valve body and a first orthogonal coordinate system having an Xpassing through a center Oof the nozzle plateand along the first direction-and a Yaxis passing through the center Oof the nozzle plateand perpendicular to the Xaxis is virtualized on the virtual plane, an introduction passage-is inclined so that a straight line segment-connecting between a central point-of an upstream side end portion and a center Oa-of an inlet opening surface of a fuel injection hole-is positioned on the Yaxis side with respect to a straight line-passing through the central point-and the center Oof the nozzle plate

A solid-liquid separation device performs dehydration or deoiling from a treated object using a substance A that is a gas at normal temperature and pressure and is capable of dissolving water and oil when liquefied. The separation device includes a substance B that circulates while generating phase change in a closed system, a compressor that compresses the substance B, a first heat exchanger that condenses substance B and evaporates of the substance A, an expansion valve that decompresses the condensed substance B, a second heat exchanger that evaporates substance B and condenses substance A, and a treatment tank wherein substance A is mixed with the treated object, substance A is evaporated while separated from the liquid in the first heat exchanger, and condensed in the second heat exchanger. The center of gravity of the first heat exchanger is lower than the second heat exchanger in a vertical direction.

Solid-liquid separation device

The purpose of the present invention is to provide a fuel injection valve that can achieve sufficient atomization even if the spray angle is narrow. The present invention is a fuel injection valve, in which fuel flowing in from a fuel passage sectionis made to flow so as to diffuse from the center of a fuel diffusion chamberB toward the outer circumference and to flow into a nozzle hole, wherein: the nozzle holecomprises a first nozzle hole, and a second nozzle holeand a third nozzle holethat neighbor the first nozzle holeand are separated therefrom in the circumferential direction of the fuel diffusion chamberB; and, if the distance Lbetween the center of the entry-side opening of the first nozzle holeand the center of the entry-side opening of the second nozzle holeis greater than the adistance Lbetween the center of the entry-side opening of the first nozzle holeand the center of the entry-side opening of the third nozzle hole, the exit-side opening of the first nozzle holeis disposed on the inside of an arrangement circleand on the second nozzle holeside of a line segment

A solid-liquid separation device performs dehydration/deoiling from a mixture of water and/or oil and a solid. Substance A is capable of dissolving water and oil. The device includes substance B circulated while generating phase change in a closed system; a compressor; a first heat exchanger exchanging condensation heat of substance B and evaporation heat of substance A; a second heat exchanger exchanging evaporation heat of substance B and condensation heat of substance A; and a treatment tank for mixing substance A with an object to be treated; substance A having been evaporated while separated from the water or the oil in the first heat exchanger, and condensed in the second heat exchanger. The first heat exchanger is lower than the treatment tank in a vertical direction, and a connection port of the first heat exchanger and a lower portion of the treatment tank are connected with a flow path.

To provide a solid-liquid separation system in which a stable operation can be continuously conducted and the introduction cost and the running cost can be suppressed, in cases where moisture or oil are separated from a substance containing moisture or oil by using changes in phase of a working fluid having a nature of dissolving moisture or oil in a liquid phase. Provided is a solid-liquid separation system in which a working fluid that dissolves moisture or oil in a liquid phase is liquefied and brought into contact with a solid substance to thereby allow the working fluid to contain moisture or oil that has been contained in the solid substance, and then the working fluid is vaporized to precipitate the moisture or oil, characterized in that the solid-liquid separation system is provided with a fluid circuit in which a high-temperature-side heat exchanger that vaporizes the working fluid by a refrigerant, a low-temperature-side heat exchanger that liquefies the working fluid by the refrigerant are connected to circulate the working fluid, and a refrigerating cycle in which a compressor, a condenser that exchanges heat with a heat source other than the working fluid, the high-temperature-side heat exchanger, an expansion mechanism, and the low-temperature-side heat exchanger are sequentially connected to circulate the refrigerant, and that the solid-liquid separation system includes a recovery operation mode in which the working fluid in a filling tank is vaporized, besides the solid-liquid separation. For performing the recovery operation mode, a second expansion mechanism is provided between the condenser and the high-temperature-side heat exchanger. The system is also characterized in that the fluid circuit is provided with a heating unit that does not use the refrigerant as a heat source.

Solid-liquid separation system

In a heating device having a microwave generator for generating microwaves, a waveguide for propagating the microwaves, a matching element for adjusting the impedance inside the waveguide and a flow pipe for passing a substance to be heated, an outer pipe of low dielectric constant is arranged to circulate a heat transfer medium for heat exchange around the flow pipe adapted to pass the heated substance and a circulation constant temperature bath is provided for adjusting the temperature of the heat transfer medium for heat exchange and for circulating it, so that microwaves are irradiated while adjusting the temperature of the heat transfer medium for heat exchange to a desired value by means of the circulation constant bath and circulating the heat transfer medium around the flow pipe.

Growing community of inventors

Tokyo, Japan

Mitsuhiro Matsuzawa