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公开(公告)号：EP1180653A4
公开(公告)日：2003-07-16
申请号：EP00927765
申请日：2000-05-15
Applicant: MATSUSHITA REFRIGERATION
Inventor： TANAKA MASAAKI , SHIMIZU TAKESHI , NISHIMURA KOICHI
CPC classification number: F25D29/006 , F25B2400/12 , F25D21/08 , F25D2400/24
Abstract: A refrigerator using an inflammable refrigerant capable of reducing the risk of fire which may occur when defrosting is performed under the environment that the inflammable refrigerant leaks, comprising an evaporator (10) of a refrigerating cycle using inflammable refrigerant and defrosting means (18) defrosting the evaporator (10), wherein the temperature of the defrosting means (18) is maintained at less than the ignition temperature of the inflammable refrigerant.
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公开(公告)号：JP2002206849A
公开(公告)日：2002-07-26
申请号：JP2001368287
申请日：2001-12-03
Applicant: MATSUSHITA REFRIGERATION
Inventor： TANAKA MASAAKI , SHIMIZU TAKESHI , NISHIMURA KOICHI
Abstract: PROBLEM TO BE SOLVED: To reduce a danger of igniting a combustible refrigerant which may occur when defrosting is carried out under an environment with the leakage thereof at a refrigerator using the combustible refrigerant. SOLUTION: In a refrigerating cycle with a cooler 36 of a refrigerator compartment and a cooler 38 of a freezer compartment using the combustible refrigerant, a defrosting means 18 for the cooler 38 of the freezer compartment is provided and the temperature of the defrosting means 18 is set less than that causing the ignition of the combustible refrigerant thereby reducing the danger of igniting the combustible refrigerant.
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公开(公告)号：JP2001201235A
公开(公告)日：2001-07-27
申请号：JP2000005530
申请日：2000-01-14
Applicant: MATSUSHITA REFRIGERATION
Inventor： NISHIMURA KOICHI , KINO AKIHIRO
Abstract: PROBLEM TO BE SOLVED: To achieve high efficiency by a wide ranging capacity control concerning a refrigerator-freezer, using a double-stage compression system. SOLUTION: There are arranged a refrigerator-freezer body having a freezer compartment and a refrigerator compartment, low stage side compressor 10, high stage side compressor 12, condenser 5, low-stage side capillary 6, low-stage side flow rate adjuster 14 which is provided between the condenser 5 and the low stage side capillary 6 for adjusting the flow rate of a refrigerant to the low-stage side capillary 6, low-stage side evaporator 8 for cooling the freezer compartment, low-stage side suction tube 11 provided between the low-stage side evaporator 8 and the low-stage side compressor 10, high-stage side capillary 7, high-stage side flow rate adjuster 15 which is provided between the condenser 5 and the high-stage side capillary 7 for adjusting the flow rate of the refrigerant to the high-stage side capillary 7, high-stage side evaporator 9 for cooling the refrigerator compartment, and high-stage side suction tube 13 provided between the high stage side evaporator 9 and the high-stage side compressor 12.
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公开(公告)号：JP2001091139A
公开(公告)日：2001-04-06
申请号：JP26863099
申请日：1999-09-22
Applicant: MATSUSHITA REFRIGERATION
Inventor： SHIMIZU TAKESHI , TANAKA MASAAKI , NISHIMURA KOICHI , YONEMURA MINORU
Abstract: PROBLEM TO BE SOLVED: To reduce the danger caused by ignition when defrosting is performed under such environment that a combustible refrigerant has leaked, in a refrigerator using a combustible refrigerant. SOLUTION: This refrigerator is equipped with a compressor 9, a refrigeration cycle of evaporator 10 using a combustible refrigerant, a defrosting means 18 for defrosting the evaporator 10, and an inverter means 22 for varying the capacity of the said compressor 19, and this operates the defrosting means 18 by the inverter means 22, so this refrigerator can reduce the danger caused by the ignition of the combustible refrigerant because the temperature of the defrosting means 18 is under the ignition temperature of the combustible refrigerant.
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公开(公告)号：JP2000121237A
公开(公告)日：2000-04-28
申请号：JP29826598
申请日：1998-10-20
Applicant: MATSUSHITA REFRIGERATION
Inventor： TANAKA MASAAKI , SHIMIZU TAKESHI , NISHIMURA KOICHI , KAMISAKO TOYOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a refrigerator using an ignitable refrigerating in which explosion is prohibited when a defrosting operation is carried out under an environment where ignitable refrigerant is leaked out of the refrigerator. SOLUTION: There is provided a cooling chamber 19 having an evaporator 10 of a freezing cycle where an ignitable refrigerant is applied and having a defrosting means 18 for defrosting the evaporator 10. Since the defrosting means 18 is mounted near the lower-most pipe 20 of the evaporator 10, defrosting operation caused by a thermo-siphon of the ignitable refrigerant can be promoted, disaster of explosion caused by ignition of the ignitable refrigerant can be prevented and then the non-refrigerated state caused by residual frost can be prevented.
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Patent Agency Ranking
公开(公告)号：JP2000121232A
公开(公告)日：2000-04-28
申请号：JP29826298
申请日：1998-10-20
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAMISAKO TOYOSHI , SHIMIZU TAKESHI , TANAKA MASAAKI , NISHIMURA KOICHI
Abstract: PROBLEM TO BE SOLVED: To provide a refrigerator having a defrosting system in which a safety characteristic at the time of using ignitable refrigerant can be improved and a storing space of the refrigerator can be expanded. SOLUTION: This refrigerator is comprised of a cooling circuit 36 including a compressor 29, a condenser 31, a first flow passage control means 34 for use in feeding refrigerant to either one of a first pressure reducing means 32 or second pressure reducing means 33, a first evaporator 25 for evaporating and gasifying liquefied refrigerant fed from the pressure reducing means, a second evaporator 27 and a second flow passage control means 35 installed after the second evaporator 27; and a defrosting circuit 38 constructed by a third flow passage control means 37 for use in flowing high temperature gas to the second evaporator 27 during a defrosting operation.
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公开(公告)号：JPH11304340A
公开(公告)日：1999-11-05
申请号：JP11467698
申请日：1998-04-24
Applicant: MATSUSHITA REFRIGERATION
Inventor： NISHIMURA KOICHI , SHIMIZU TAKESHI , TANAKA MASAAKI
IPC: F25D19/00
Abstract: PROBLEM TO BE SOLVED: To raise the heat radiation efficiency of a condenser, by equipping it with a cooling duct where either space above or below a condenser is widened on the suction side of the condenser and the opposite space from the suction side is widened on the discharge side of the condenser and besides where both spaces above and below it are wide in the middle. SOLUTION: This refrigerator is composed of a condenser 5, a cooling fan 3 for cooling the condenser 5, and a cooling duct 7 where either space above or below the condenser 5 is widened on the suction side of the condenser 5 and the opposite space from the suction side is widened on the discharge side of the condenser 5 and besides where both spaces above and below it are wide in the middle. Then, in the section where the space between such condenser 5 and the cooling duct 7 is wide, a cooling wind, which was flowing in the condenser 5 up to now, is let flow to a new space, and a cooling wind, which was flowing in the space up to now, is let flow to the condenser 5. Hereby, the temperature difference between the condenser 5 and the cooling wind can be enlarged, and the heat radiation efficiency of the condenser 5 can be raised.
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公开(公告)号：JPH10292976A
公开(公告)日：1998-11-04
申请号：JP10139597
申请日：1997-04-18
Applicant: MATSUSHITA REFRIGERATION
Inventor： NISHIMURA KOICHI , SHIMIZU TAKESHI , TANAKA MASAAKI
Abstract: PROBLEM TO BE SOLVED: To prevent lowering of the efficiency of a refrigerator and to remove dust adhered to a condenser completely by passing cooling air in the direction on the side of condenser efficiently by providing with fins protruding in the direction of the condenser inside an evaporation pan and crossing the direction of the cooling air-flow from a cooling fan. SOLUTION: Fins 9 are arranged protruding in the direction of the condenser inside the evaporation pan. The outer air is taken inside a machine room driven by the cooling fan from an intake hole, cools the condenser and a compressor, and is discharged from exhaust hole. When the cooling air passes through the evaporator, the cooling, air tends to pass through the inside of the evaporation pan 6 with less pressure loss. The cooling air collides fins 9 erected inside the evaporation pan 6 towards the condenser, is pushed back towards the condenser and cools the condenser. Therefore, the cooling air passes through the condenser becomes more than that in the case without the fins 9 and the condenser can be cooled efficiently. Therefore, the cooling air is prevented from passing on the side of the evaporating pan 6.
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公开(公告)号：JPH10131854A
公开(公告)日：1998-05-19
申请号：JP28637396
申请日：1996-10-29
Applicant: MATSUSHITA REFRIGERATION
Inventor： NISHIMURA KOICHI , MORITA ICHIRO , KOBAYASHI MASANORI , KATAYAMA MAKOTO
IPC: F04B35/04
Abstract: PROBLEM TO BE SOLVED: To prevent the excessive movement of the top dead center of a piston in case of the pressure condition of a compressor being changed in the oscillating compressor used for a refrigerating cycle or the like. SOLUTION: A low pressure side back pressure chamber 13 and a high pressure side back pressure chamber 14 are provided on the anti-compression- chamber 10 side of a piston 5 and communicated with a system low pressure part 12a and a system high pressure part 11a respectively by a low pressure side communicating passage 16 and a high pressure side communicating passage 17. The top dead center position change of the piston 5 caused by the change of operating pressure is thereby prevented so as to prevent the damage and noise of the piston 5 and a cylinder head 7 caused by the collision of the piston 5 against the cylinder head 7, and lowering of refrigerating capacity and efficiency caused by the increase of reexpansion displacement in the compression chamber.
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公开(公告)号：JP2003090615A
公开(公告)日：2003-03-28
申请号：JP2001287608
申请日：2001-09-20
Applicant: MATSUSHITA ELECTRIC IND CO LTD , MATSUSHITA REFRIGERATION
Inventor： NISHIMURA KOICHI , MIYAUCHI SHINJI , NAKAMURA AKINARI
Abstract: PROBLEM TO BE SOLVED: To prevent the useable and valid amount of a high temperature heat medium from lowering owing to the destruction of a temperature layer of the heat medium in a hot water storage tank in a fuel cell cogeneration system. SOLUTION: There are provided a hot water storage discharge pipe 16 in a hot water storage tank 5 which is capable of varying the direction of a suction hole 16a, a hot water storage discharge system 17 coupled with the hot water storage discharge pipe 16 and employing a heat medium stored in the hot water storage tank 5, a temperature distribution detection means 18 for detecting a temperature distribution in the hot water storage tank 5, and hot water storage temperature control means 19 for controlling the direction of the suction hole 16a of the hot water storage discharge pipe 16 to the direction of the temperature layer of the heat medium desired to be used with the aid of the temperature distribution detected by the temperature distribution detection means 18.
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