Tdk Corporation

Hitachi, Ltd.

Hitachi-johnson Controls Air Conditioning, Inc.

501 Tdk Corporation

Tatsuo Fujii

Kimio Tanaka

Yoko Kokugan

Shuji Higashi

Satoshi Miyake

Haruo Shiba

Takateru Satoh

Nobuyuki Takeda

Akira Nishioka

Katsumi Mabuchi

Tomihisa Ohuchi

Sachio Sekiya

Hiroaki Matsushima

Hiroshi Kusumoto

Noboru Uemura

Kazuhiro Endoh

Hirotsugu Kuroume

Koji Sasagawa

Maya Tomisawa

Shigetomo Takeda

Atsushi Shitara

Toshikuni Ohashi

Mitsuharu Matsubara

Takehiro Sato

Hiroyuki Nakajima

Toshiaki Inuma

Yusuke Kiritoshi

Akiko Iizuka

Yuji Ichimura

A performance diagnosis device performs data collection of operation data of an air conditioner, and a model database indicates performance corresponding to each operating condition of the air conditioner. The device uses the operation data and the model database to obtain reference data that is a combination of a plurality of operating conditions and a reference value. A performance evaluation unit compares the reference data and evaluation data that is to be evaluated, and evaluates the performance of the air conditioner. A reference data update unit compares the reference data and the evaluation data when the operating conditions match with each other, and updates the reference data. As a result, the deterioration diagnosis technology can update unique reference values that reflect the dimensional errors of each device, differences in installation conditions, and differences in operating conditions to appropriate values with respect to the deterioration of the performance of air conditioners.

Performance diagnosis device and performance diagnosis method for air conditioner

A performance diagnosis device for an air conditioner includes: a data collection unit that collects and records operation data on the air conditioner; an equipment characteristic database that is a data group covering operation conditions meeting the specifications of the air conditioner; a reference data creation unit that calculates individual characteristic curved surface data by using the operation data possessed by the data collection unit and the equipment characteristic database; and a performance evaluation unit that compares part of the operation data possessed by the data collection unit with the individual characteristic curved surface data to evaluate the performance of the air conditioner, in which the individual characteristic curved surface data is corrected with respect to the equipment characteristic database so as to correspond to the operation data possessed by the data collection unit. Thus, it is possible to detect the performance deterioration of the air conditioner regardless of the magnitude of the air conditioning load and to clarify the necessity of the maintenance work for the air conditioner.

Provided is a working medium of the present invention for absorption refrigerators is a mixture that is to contact a carbon steel or a copper alloy that is a structural material of any one of the absorption refrigerators, and includes water and 1,4-dioxane, and further includes a corrosion inhibitor. The corrosion inhibitor includes one or more selected from the group consisting of respective hydroxides of any alkali metal and any alkaline earth metal, and respective oxoates. Thus, corrosion of the structural material of the absorption refrigerator can be restrained.

Working medium for absorption refrigerators, and absorption refrigerator using the same

A discharged warm/cold heat of a refrigerant circuit is effectively utilized in order to attain high energy efficiency. Appropriate operation control is executed when a hot-water supplying operation and an air cooling operation are simultaneously performed, whereby high energy efficiency is attained. When an air cooling operation by an air temperature adjusting refrigerant circuit and a hot-water supplying operation by a hot-water supplying refrigerant circuit are executed, the air temperature adjusting refrigerant circuit, and the hot-water supplying refrigerant circuit are controlled such that a target evaporation temperature of the hot-water supplying refrigerant circuit or a target condensation temperature of the air temperature adjusting refrigerant circuit is attained, the target evaporation temperature or the target condensation temperature being set based upon an air cooling capacity and an evaporation temperature of the air temperature adjusting refrigerant circuit and a hot-water supplying capacity and a condensation temperature of the hot-water supplying refrigerant circuit.

Air-conditioning hot-water supply system, and heat pump unit

An isothermal transportation container comprises an insulating container and a lid that can seal this insulating container. The insulating container has a plurality of insulating materials arranged overlapped on the inner peripheral face of the insulating container. A thermal conductive member is arranged in a space of the insulating container formed by the insulating materials. The thermal conductive member can accommodate a plurality of laminated packaging containers, each of which accommodates a thermal storage medium and a transported article. The heat in the thermal storage medium in one packaging container can be transmitted to the other packaging container through the thermal conductive member.

Isothermal transportation container

A two-stage absorption refrigerating apparatus includes an integrated drum in which a low-pressure evaporator and a low-pressure absorber are arranged in an upper part and a high-pressure evaporator and a high-pressure absorber are arranged in a lower part. Uncondensed gas resulted in a high-temperature generator and elsewhere successively moves toward a low-pressure side along with a circulation of refrigerant and solution. The uncondensed gas deposited in the high-pressure absorber is extracted by bleeding device, and the uncondensed gas deposited in the low-pressure absorber is extracted by an ejector. The extracted uncondensed gas is stored into a gas storage tank via a gas-liquid separator. A valve is provided on the gas storage tank.

Two-stage absorption refrigerating apparatus

A liquid distributor, a falling film heat exchanger and an absorption refrigerating machine, which are inexpensive and favorably ensure uniform distribution of a liquid even in the case where the liquid distributor is installed in oblique position and foreign matters such as metal particles or the like are mixed in the liquid. The liquid distributor comprise a primary distribution duct of box-shaped cross section having an opening serving as a liquid inlet, and distribution holes serving as liquid outlets and formed on side surfaces of the primary distribution duct, and a group of box-shaped secondary distribution trays spaced from outer side surface and lower side surface of the primary distribution duct, and formed to be compartmented into a plurality of regions in a longitudinal direction of the primary distribution duct. Liquid dripping holes, through which the liquid is dropped, are formed in bottom surfaces of the secondary distribution trays. The liquid distributor is incorporated in falling film heat exchangers or absorption refrigerating machines.

Liquid distributor, falling film heat exchanger and absorption refrigeration

The present invention provides a superior light-storing printed article, which includes a light-storing printed layer comprising 50-80 wt % of light-storing pigment having D50=22-35 .mu.m and D90=58-80 .mu.m based on the total amount of the light-storing pigment and the binder, and the thickness of the printed layer being 50-150 .mu.m.

Printed articiles having light-storing printed layers

A film-wrapped article consisting of a rectangular product wrapped with a heat-shrinkable plastic film in intimate contact therewith, the upper and under edge portions of the film being overlapped and sealed together along the body of the wrap to form a seal. A part of the seal on one side of the article is formed as a weakly joined zone whose adhesion strength increases by continuous or stepwise gradations from an opening zone where the adhesion strength is the lowest toward the both ends of the article. The weakly joined zone is made up of joined and unjoined regions extending along the interface between the upper and under edge portions, in a repetitive pattern of the regions varying in adhesion strength with changes in the area ratio of the joined and unjoined regions. The wrap has a cut for unwrapping use made in the opening or neighboring zone of the upper edge portion.

Film-wrapped articles with improved opening properties

A method for making plastic case blanks is disclosed. A molten plastic material is passed through a nip of a first, preforming pair of molding cylinders to form a semi-solidified sheet having a first thickness, The semi-solidified sheet is then molded to form a final sheet having a second, uniform thickness less than the first thickness and the final sheet is scored to form folding scores and cut to form a plurality of the blanks. The molding, scoring and cutting are simultaneously performed by passing the semi-solidified sheet through a nip of a second pair of cylinders. One of the second pair of cylinders has scoring means for forming the folding scores in the final sheet and cutting means for cutting the final sheet to form the plurality of the blanks and the other of the second pair of cylinders has recess means complementary to the cutting means for receiving the cutting means and effectuating the cutting.

Method for manufacturing plastic case

An easy opening film package for wrapping cubic or rectangular shaped articles is prepared from a film having a printed portion containing ink and a compatible thermoplastic resin on one surface of the film. The film is wrapped around the article and heat sealed in the area of overlap of the film ends. The printed portion extends to the ends of the film and across the film over a width substantially coextensive with the width of the face of the article on which the seal is to be located.

Easy opening film package and a method of preparing the same

A casing for receiving a magnetic tape cassette comprises a transparent or semi-transparent casing main body 1 adapted to receive therein a magnetic tape cassette and a cover 3 pivotally supported by the casing main body by way of hinges 2, wherein a rib 10 for restricting the movement of the magnetic tape cassette in the direction of thickness of the casing main body 1 and a rib 9 for restricting the movement of the cassette in the longer side direction of the casing main body 1 are formed in the inner wall at a corner portion of the cover member.

Casing for receiving a magnetic tape cassette

A casing for magnetic recording medium has a laminated structure in which a printed plastic film is bonded on one surface of a raw plastic sheet.

Process of preparing a casing for magnetic recording medium

Casing for magnetic recording medium and preparation thereof

A package comprising a case which comprises a bottom member and a cover member, and a plurality of disk-form magnetic recording mediums, each having a central hole, which are contained in the case in a stacked state one on another while an upright pillar standing on the center of the bottom member is relatively inserted into the central holes of the disk-form magnetic recording mediums. The package may be tied from the outside by binding means or may be wrapped by a plastic film by means of a vacuum packing. The disk-form magnetic recording mediums packed in the case are protected from the dust and the moisture perfectly, and the damage of the recording mediums caused by the rubbing therebetween by vibrations or the like during the transit can be prevented by the upright pillar inserted into the holes of the recording mediums.

Growing community of inventors

Tokyo, Japan

Tatsuo Fujii