Patents by Inventor Yoshitoshi Noda
Yoshitoshi Noda 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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Publication number: 20090249827Abstract: To provide a refrigeration apparatus and a heat exchanger used for the refrigeration apparatus capable of exhibiting the cooling capacity of the same level even if an alternate refrigerant is used without largely changing constituent parts of a refrigeration cycle. In the refrigeration apparatus according to the present invention, a ratio of the number of tubes of the supercooling section (17) to the total number of tubes (20) of the condensing section (16) and the supercooling section (17) is set such that cooling capacity obtained by an increased enthalpy difference with the same flow rate of refrigerant by the supercooling section (17) becomes equal to cooling capacity of a refrigeration cycle of the HFC134a refrigerant.Type: ApplicationFiled: April 9, 2008Publication date: October 8, 2009Inventors: Chieko Ujiie, Yoshitoshi Noda
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Publication number: 20060080977Abstract: A variable capacitance compressor is provided in a refrigeration cycle of a vehicular air conditioning system. The variable capacitance compressor controls discharge capacity of refrigerant by an external control pulse signal, and can substantially estimate compressor suction side pressure by the external control pulse signal and compressor discharge side pressure. A compressor torque calculator is provided to calculate torque based on evaporator upstream and downstream temperature difference data ?t, which is a temperature difference between inlet side air temperature of an evaporator and outlet side air temperature of the evaporator, compressor discharge side pressure data Pd, duty ratio data of a control pulse signal, and compressor's number of revolution data.Type: ApplicationFiled: October 14, 2005Publication date: April 20, 2006Inventor: Yoshitoshi Noda
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Patent number: 6742355Abstract: The invention relates to a receiver-drier for use in an air conditioning system. This receiver-drier has (a) a lower portion defining a lower chamber in the receiver-drier; (b) an upper portion defining an upper chamber in the receiver-drier; and (c) a strainer for removing foreign particles from the refrigerant. The lower portion has an inlet for allowing the refrigerant to flow into the lower chamber and an outlet for allowing the refrigerant to flow out of the lower chamber. Each of the inlet and the outlet is formed at a bottom of the lower portion. The upper chamber is on top of the lower chamber and is charged with a desiccant for removing moisture from the refrigerant. The strainer is disposed at a position in a flow of the refrigerant from the inlet to the outlet.Type: GrantFiled: December 28, 2001Date of Patent: June 1, 2004Assignees: Calsonic Kansei Corporation, Calsonic Products, Inc.Inventors: Nobuo Ichimura, Yoshikazu Takamatsu, Yoshitoshi Noda, Akira Tsukamoto, Mitsutoshi Sugano, Yoshihiro Nakamura
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Patent number: 6604576Abstract: An air conditioning system for a vehicle has a first cycle including a compressor, a first condenser, a second condenser, a liquid tank, an expansion valve and an evaporator which are connected through pipes to form a first refrigerant circulation circuit through which a refrigerant flows from an outlet of the compressor to an inlet of the compressor while changing the phase. The first cycle causes the evaporator to act as a cooler when operated. The system further has a second cycle including the compressor, the second condenser, the liquid tank, the evaporator and the evaporator which are connected through pipes to form a second refrigerant circulation circuit through which the refrigerant flows from the outlet of the compressor to the inlet of the compressor while changing the phase. The second cycle causes the condenser to act as a heater and the evaporator to act as a cooler when operated. The first and second cycles are switched by switch means.Type: GrantFiled: November 12, 1997Date of Patent: August 12, 2003Assignee: Calsonic Kansei CorporationInventors: Yoshitoshi Noda, Hiroyuki Yamaguchi, Tadayoshi Tajima, Hiroki Yoshioka, Toshio Ohashi, Kenichi Abe
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Publication number: 20030121278Abstract: The invention relates to a receiver-drier for use in an air conditioning system. This receiver-drier has (a) a lower portion defining a lower chamber in the receiver-drier; (b) an upper portion defining an upper chamber in the receiver-drier; and (c) a strainer for removing foreign particles from the refrigerant. The lower portion has an inlet for allowing the refrigerant to flow into the lower chamber and an outlet for allowing the refrigerant to flow out of the lower chamber. Each of the inlet and the outlet is formed at a bottom of the lower portion. The upper chamber is on top of the lower chamber and is charged with a desiccant for removing moisture from the refrigerant. The strainer is disposed at a position in a flow of the refrigerant from the inlet to the outlet.Type: ApplicationFiled: December 28, 2001Publication date: July 3, 2003Applicant: CALSONIC KANSEI CORPORATIONInventors: Nobuo Ichimura, Yoshikazu Takamatsu, Yoshitoshi Noda, Akira Tsukamoto, Mitsutoshi Sugano, Yoshihiro Nakamura
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Patent number: 6478083Abstract: An air conditioning unit is provided comprising a casing including an air flow passage, an evaporator and a heater arranged in the air flow passage, and an air flow control door for controlling an air amount flowing in a heater-passing passage. A water guide groove is provided at a bottom surface of the casing with a slanted bottom. A triangular projection is formed on the bottom surface of the casing, the triangular projection being oriented so that one apex of the projection is directed toward the front wall of the casing.Type: GrantFiled: November 22, 2000Date of Patent: November 12, 2002Assignee: Calsonic Kansei CorporationInventors: Yoshiaki Nanba, Morihiro Takasaki, Kenichiro Sawano, Osamu Kato, Yoshitoshi Noda
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Publication number: 20020005268Abstract: An air conditioning system for a vehicle has a first cycle including a compressor, a first condenser, a second condenser, a liquid tank, an expansion valve and an evaporator which are connected through pipes to form a first refrigerant circulation circuit through which a refrigerant flows from an outlet of the compressor to an inlet of the compressor while changing the phase. The first cycle causes the evaporator to act as a cooler when operated. The system further has a second cycle including the compressor, the second condenser, the liquid tank, the evaporator and the evaporator which are connected through pipes to form a second refrigerant circulation circuit through which the refrigerant flows from the outlet of the compressor to the inlet of the compressor while changing the phase. The second cycle causes the condenser to act as a heater and the evaporator to act as a cooler when operated. The first and second cycles are switched by switch means.Type: ApplicationFiled: November 12, 1997Publication date: January 17, 2002Inventors: YOSHITOSHI NODA, HIROYUKI YAMAGUCHI, TADAYOSHI TAJIMA, HIROKI YOSHIOKA, TOSHIO OHASHI, KENICHI ABE
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Patent number: 6334322Abstract: A refrigerating cycle has a condenser, an evaporator, a variable displacement compressor, and an expansion valve. The variable displacement compressor is connected between the condenser and the evaporator to form the refrigerating cycle, and includes a control valve designed to provide a control valve characteristic sloping downward with increase in a discharge pressure. The expansion valve is connected between the condenser and the evaporator, to return a refrigerant from the condenser through the evaporator to the variable displacement compressor, and designed to provide an open valve characteristic whose slope is approximately equal to the downward slope of the control valve characteristic.Type: GrantFiled: April 19, 2001Date of Patent: January 1, 2002Assignee: Calsonic Kansei CorporationInventors: Atsushi Kubota, Nobuo Ichimura, Yoshitoshi Noda, Katsunori Fujiura
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Publication number: 20010035017Abstract: A refrigerating cycle has a condenser, an evaporator, a variable displacement compressor, and an expansion valve. The variable displacement compressor is connected between the condenser and the evaporator to form the refrigerating cycle, and includes a control valve designed to provide a control valve characteristic sloping downward with increase in a discharge pressure. The expansion valve is connected between the condenser and the evaporator, to return a refrigerant from the condenser through the evaporator to the variable displacement compressor, and designed to provide an open valve characteristic whose slope is approximately equal to the downward slope of the control valve characteristic.Type: ApplicationFiled: April 19, 2001Publication date: November 1, 2001Applicant: CALSONIC KANSEI CORPORATIONInventors: Atsushi Kubota, Nobuo Ichimura, Yoshitoshi Noda, Katsunori Fujiura
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Patent number: 6230505Abstract: A heat pump type air conditioning system (A) for an automotive vehicle. The heat type air conditioning system (A) comprises a first unit (10) including a heater core (11) through which an engine coolant of an engine flows, and a first heat exchanger (12) which forms part of a refrigeration cycle including a compressor (1) and a first condenser (3), in which a refrigerant circulates in the refrigeration cycle. A second unit (20) is provided including a second condenser (21) and a second heat exchanger (22) which are fluidly connected in parallel with the first heat exchanger (12). A valve (V2) is fluidly connected in series with the second condenser (21) and disposed such that a part of the refrigerant is introduced through the valve into the second condenser (21) and the second heat exchanger (22).Type: GrantFiled: January 10, 2000Date of Patent: May 15, 2001Assignee: Calsonic Kansei CorporationInventors: Yoshitoshi Noda, Hiroyuki Yamaguchi, Toshio Ohashi, Kaoru Kamiyama, Tadayoshi Tajima, Toshiharu Watanabe, Yasuhito Okawara, Hiroki Yoshioka
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Patent number: 6125643Abstract: A heat pump type air conditioning system (A) for an automotive vehicle. The heat type air conditioning system (A) comprises a first unit (10) including a heater core (11) through which an engine coolant of an engine flows, and a first heat exchanger (12) which forms part of a refrigeration cycle including a compressor (1) and a first condenser (3), in which a refrigerant circulates in the refrigeration cycle. A second unit (20) is provided including a second condenser (21) and a second heat exchanger (22) which are fluidly connected in parallel with the first heat exchanger (12). A valve (V2) is fluidly connected in series with the second condenser (21) and disposed such that a part of the refrigerant is introduced through the valve into the second condenser (21) and the second heat exchanger (22).Type: GrantFiled: November 14, 1997Date of Patent: October 3, 2000Assignee: Calsonic CorporationInventors: Yoshitoshi Noda, Hiroyuki Yamaguchi, Toshio Ohashi, Kaoru Kamiyama, Tadayoshi Tajima, Toshiharu Watanabe, Yasuhito Okawara, Hiroki Yoshioka
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Patent number: 5910157Abstract: An air conditioning system for a motor vehicle powered by an internal combustion engine has a first system for carrying out a first cycle, which includes a compressor driven by the engine, a main condenser, a first sub-condenser and an evaporator which are connected through pipes to form a first refrigerant circulation circuit through which a refrigerant flows from an outlet of the compressor to an inlet of the same while changing its phase, the first cycle causing the first sub-condenser as a heater and the evaporator as a cooler when operated. The air conditioning system has further a second system for carrying out a second cycle, which includes the compressor and a second sub-condenser which are connected through pipes to form a second refrigerant circulation circuit through which the refrigerant flows from the outlet of the compressor to the inlet of the same while changing its phase, the second cycle causing the second sub-condenser as a heater when operated.Type: GrantFiled: December 3, 1997Date of Patent: June 8, 1999Assignee: Calsonic CorporationInventor: Yoshitoshi Noda
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Patent number: 5899086Abstract: A heat pump type air conditioning system (A) for air-conditioning a passenger compartment of an automotive vehicle. The air conditioning system comprises first and second units (10, 20). The first unit includes a heater core (12) and a first evaporator (13) while the second unit includes a second condenser (22) and a second evaporator (23). A compressor (2) and a first condenser (3) are disposed outside the first and second units which constitute a refrigeration cycle including the first evaporator (13). A circuit change-over valve (4) is provided to cause flow of the refrigerant discharged from the compressor (2) to be changed over between a refrigeration operation refrigerant circuit including the first condenser and a heating operation refrigerant circuit including a bypass passage for allowing the refrigerant to flow bypassing the first condenser. A third evaporator (30) is disposed outside the first and second units (10, 20).Type: GrantFiled: October 30, 1997Date of Patent: May 4, 1999Assignee: Calsonic CorporationInventors: Yoshitoshi Noda, Hiroyuki Yamaguchi, Toshio Ohashi, Tadayoshi Tajima, Kaoru Kamiyama