Patents by Inventor Masahiko Gommori
Masahiko Gommori has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7603872Abstract: A heat-pump hot water supply apparatus, for dissolving problems of delaying in heating rise-up time when re-starting, and ill influences upon starting characteristics, due to liquid refrigerant residing in an evaporator when the operation is stepped, within a heat-pump circuit thereof, comprises a heat-pump refrigerant circuit, in which a compressor, a water/refrigerant heat exchanger, a refrigerant adjusting valve, and an evaporator, in series, through refrigerant pipes, a direct hot-water supply circuit, into which is supplied hot water heated, obtained by heating water supplied from an outside via a water pipe by means the water/refrigerant heat exchanger, and a compressor operation controller means for stopping the compressor and also closing the refrigerant adjusting valve when the compressor stops the operation thereof, and for re-starting the compressor after opening the refrigerant adjusting valve when the compressor starts the operation, again, wherein the refrigerant within the evaporator is collectType: GrantFiled: January 26, 2006Date of Patent: October 20, 2009Assignee: Hitachi Appliances, Inc.Inventors: Taichi Tanaami, Masahiko Gommori, Kazuhiro Endoh, Junichi Takagi, Kouichi Fukushima
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Patent number: 7234646Abstract: A hot-water supply system heats water through heat exchange between high-temperature refrigerant of a heat pump circuit and water of a water circulating circuit. The system is an instantaneous water heater unit for instantaneously heating, at a water heat exchanger, water supplied through a water supply pipe and supplying hot water to a using end unit. Therefore, a large-capacity hot-water storage tank is not needed. Sufficient heat of condensation to heat water can not be produced, because pressure conditions of the heat pump circuit is not stabilized just after the start of operation. Therefore, during a short period of rising time, hot water stored in a hot-water supply tank and water from the water heat exchanger are mixed and the mixture is supplied to keep the hot water at a preset temperature. Therefore, it is possible to use a smaller hot-water supply tank.Type: GrantFiled: April 4, 2005Date of Patent: June 26, 2007Assignee: Hitachi Appliances, Inc.Inventors: Kenichi Saitoh, Masahiko Gommori, Hiroshi Kogure, Haruko Ashida, Takeo Ozawa, Tetsunobu Okamura
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Publication number: 20060213209Abstract: A heat-pump hot water supply apparatus, for dissolving problems of delaying in heating rise-up time when re-starting, and ill influences upon starting characteristics, due to liquid refrigerant residing in an evaporator when the operation is stepped, within a heat-pump circuit thereof, comprises a heat-pump refrigerant circuit, in which a compressor, a water/refrigerant heat exchanger, a refrigerant adjusting valve, and an evaporator, in series, through refrigerant pipes, a direct hot-water supply circuit, into which is supplied hot water heated, obtained by heating water supplied from an outside via a water pipe by means the water/refrigerant heat exchanger, and a compressor operation controller means for stopping the compressor and also closing the refrigerant adjusting valve when the compressor stops the operation thereof, and for re-starting the compressor after opening the refrigerant adjusting valve when the compressor starts the operation, again, wherein the refrigerant within the evaporator is collectType: ApplicationFiled: January 26, 2006Publication date: September 28, 2006Inventors: Taichi Tanaami, Masahiko Gommori, Kazuhiro Endoh, Junichi Takagi, Kouichi Fukushima
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Publication number: 20050167516Abstract: A hot-water supply system heats water through heat exchange between high-temperature refrigerant of a heat pump circuit and water of a water circulating circuit. The system is an instantaneous water heater unit for instantaneously heating, at a water heat exchanger, water supplied through a water supply pipe and supplying hot water to a using end unit. Therefore, a large-capacity hot-water storage tank is not needed. Sufficient heat of condensation to heat water can not be produced, because pressure conditions of the heat pump circuit is not stabilized just after the start of operation. Therefore, during a short period of rising time, hot water stored in a hot-water supply tank and water from the water heat exchanger are mixed and the mixture is supplied to keep the hot water at a preset temperature. Therefore, it is possible to use a smaller hot-water supply tank.Type: ApplicationFiled: April 4, 2005Publication date: August 4, 2005Inventors: Kenichi Saitoh, Masahiko Gommori, Hiroshi Kogure, Haruko Ashida, Takeo Ozawa, Tetsunobu Okamura
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Patent number: 6874694Abstract: A hot-water supply system heats water through heat exchange between high-temperature refrigerant of a heat pump circuit and water of a water circulating circuit. The system is an instantaneous water heater unit for instantaneously heating, at a water heat exchanger, water supplied through a water supply pipe and supplying hot water to a using end unit. Therefore, a large-capacity hot-water storage tank is not needed. Sufficient heat of condensation to heat water can not be produced, because pressure conditions of the heat pump circuit is not stabilized just after the start of operation. Therefore, during a short period of rising time, hot water stored in a hot-water supply tank and water from the water heat exchanger are mixed and the mixture is supplied to keep the hot water at a preset temperature. Therefore, it is possible to use a smaller hot-water supply tank.Type: GrantFiled: May 6, 2004Date of Patent: April 5, 2005Assignee: Hitachi, Ltd.Inventors: Kenichi Saitoh, Masahiko Gommori, Hiroshi Kogure, Haruko Ashida, Takeo Ozawa, Tetsunobu Okamura
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Patent number: 6837443Abstract: The object of the present invention is to provide a compact lightweight heat pump hot-water supply system. The hot-water supply system heats water through heat exchange between high-temperature refrigerant of a heat pump circuit and water of a water circulating circuit. The system is an instantaneous water heater unit for instantaneously heating, at a water heat exchanger, water supplied through a water supply pipe and supplying hot water to a using end unit. In this system, therefore, large-capacity hot-water storage tank in conventional systems is no longer needed. Sufficient heat of condensation to heat water can not be produced, because pressure conditions of the heat pump circuit is not stabilized just after the start of operation. Therefore, during a short period of rising time, hot water stored in a hot-water supply tank and water from the water heat exchanger are mixed and the mixture is supplied to keep the hot water at a preset temperature.Type: GrantFiled: February 5, 2003Date of Patent: January 4, 2005Assignee: Hitachi, Ltd.Inventors: Kenichi Saitoh, Masahiko Gommori, Hiroshi Kogure, Haruko Ashida, Takeo Ozawa, Tetsunobu Okamura
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Publication number: 20040200905Abstract: A hot-water supply system heats water through heat exchange between high-temperature refrigerant of a heat pump circuit and water of a water circulating circuit. The system is an instantaneous water heater unit for instantaneously heating, at a water heat exchanger, water supplied through a water supply pipe and supplying hot water to a using end unit. Therefore, a large-capacity hot-water storage tank is not needed. Sufficient heat of condensation to heat water can not be produced, because pressure conditions of the heat pump circuit is not stabilized just after the start of operation. Therefore, during a short period of rising time, hot water stored in a hot-water supply tank and water from the water heat exchanger are mixed and the mixture is supplied to keep the hot water at a preset temperature. Therefore, it is possible to use a smaller hot-water supply tank.Type: ApplicationFiled: May 6, 2004Publication date: October 14, 2004Inventors: Kenichi Saitoh, Masahiko Gommori, Hiroshi Kogure, Haruko Ashida, Takeo Ozawa, Tetsunobu Okamura
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Publication number: 20030178498Abstract: The object of the present invention is to provide a compact lightweight heat pump hot-water supply system. The hot-water supply system heats water through heat exchange between high-temperature refrigerant of a heat pump circuit and water of a water circulating circuit.Type: ApplicationFiled: February 5, 2003Publication date: September 25, 2003Inventors: Kenichi Saitoh, Masahiko Gommori, Hiroshi Kogure, Haruko Ashida, Takeo Ozawa, Tetsunobu Okamura
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Patent number: 5553465Abstract: A lubricant composition comprising as a base oil one or more ester oils, alkylbenzene oils and mineral oils, and a glycidyl ether compound having at least two epoxy groups is miscible in hydrofluorocarbon and hydrochlorofluorocarbon refrigerants such as R134a, etc. as replacing refrigerants of R12 and provides a stable operation of refrigeration compressor for a long period of time without causing corrosion and wear of a sliding portion of the compressor.Type: GrantFiled: October 13, 1994Date of Patent: September 10, 1996Assignee: Hitachi, Ltd.Inventors: Katsumi Fukuda, Tadashi IIzuka, Reishi Naka, Hiroaki Hata, Masahiko Gommori, Yoshiharu Homma
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Patent number: 5540061Abstract: A refrigerator comprises a compressor for compressing and discharging a coolant, a first heat exchanger which performs heat exchange between the compressed coolant from the compressor and the atmosphere to cool the compressed coolant, an adiabatic expansion orifice where the compressed and cooled coolant after passing the first heat exchanger is adiabatically expanded, and a second heat exchanger which performs heat exchange between the adiabatically expanded coolant and the air in refrigerating chambers so as to cool the air in the refrigerating chambers by the coolant and to heat the coolant by the air in the refrigerating chambers.Type: GrantFiled: January 5, 1993Date of Patent: July 30, 1996Assignee: Hitachi, Ltd.Inventors: Masahiko Gommori, Katsutoshi Shinohara, Takahiro Kaneko, Hiroaki Hata, Akihiko Ishiyama
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Patent number: 5445753Abstract: A lubricant composition comprising as a base oil one or more ester oils, alkylbenzene oils and mineral oils, and a glycidyl ether compound having at least two epoxy groups is miscible in hydrofluorocarbon and hydrochlorofluorocarbon refrigerants such as R134a, etc. as replacing refrigerants of R12 and provides a stable operation of refrigeration compressor for a long period of time without causing corrosion and wear of a sliding portion of the compressor.Type: GrantFiled: March 17, 1993Date of Patent: August 29, 1995Assignee: Hitachi, Ltd.Inventors: Katsumi Fukuda, Tadashi Iizuka, Reishi Naka, Hiroaki Hata, Masahiko Gommori, Yoshiharu Homma
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Patent number: 5417872Abstract: A lubricant composition comprising as a base oil one or more ester oils, alkylbenzene oils and mineral oils, and a glycidyl ether compound having at least two epoxy groups is miscible in hydrofluorocarbon and hydrochlorofluorocarbon refrigerants such as R134a, etc. as replacing refrigerants of R12 and provides a stable operation of refrigeration compressor for a long period of time without causing corrosion and wear of a sliding portion of the compressor.Type: GrantFiled: March 17, 1993Date of Patent: May 23, 1995Assignee: Hitachi, Ltd.Inventors: Katsumi Fukuda, Tadashi Iizuka, Reishi Naka, Hiroaki Hata, Masahiko Gommori, Yoshiharu Homma