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公开(公告)号：JPH11132634A
公开(公告)日：1999-05-21
申请号：JP30016797
申请日：1997-10-31
Applicant: MATSUSHITA REFRIGERATION
Inventor： KANEOKA SHINICHI , ASAKAWA OSAMU
Abstract: PROBLEM TO BE SOLVED: To quickly complete defrosting of an evaporator by shutting off a refrigerant control valve through a control of a refrigerant control valve during defrosting after a preset time is elapsed and leaving the refrigerant control valve opened when defrosting is started. SOLUTION: A microcomputer 7 stops a compressor 1, turns on a defrosting heater 6, detects a refrigerator ambient temperature by a refrigerator ambient temperature sensor 13, and decides a delay time before a refrigerant control valve 5 is closed according to a correlation between a refrigerator ambient temperature and an optimum refrigerant inflow time. Then, the microcomputer 7 starts counting of a timer, judges whether only a preset time has passed so as to determine only a prescribed time has passed, and closes the refrigerant control valve 5. As a result, it is possible to adjust a refrigerant holding amount in an evaporator during defrosting to an optimum amount and complete defrosting of the evaporator quickly.
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公开(公告)号：JPH1047826A
公开(公告)日：1998-02-20
申请号：JP20679696
申请日：1996-08-06
Applicant: MATSUSHITA REFRIGERATION
Inventor： HYODO AKIRA , ASAKAWA OSAMU , FUJIMOTO SHINJI , KIMURA YOSHITO , KAWADA YOSHINORI
Abstract: PROBLEM TO BE SOLVED: To improve a food preserving condition of a freezing refrigerator having a freezing chamber and a refrigerating chamber by elevating a humidity of the refrigerating chamber while elevating a cold-air blow-off temperature of the refrigerator. SOLUTION: A freezing refrigerator comprises a refrigerating cycle for refrigerating, a refrigerating cycle for freezing, and switching means which switches these two cycles, wherein the refrigerating cycle for refrigerating is formed by connecting a compressor 27, a condenser 28, a first throttling device 29, an evaporator 25 for refrigerating, a second throttling device 30, and an evaporator 22 for freezing in series, while the refrigerating cycle for freezing is formed by connecting the compressor 27, the condenser 28, a third throttling device 31, and the evaporator 22 in series. Due to such a construction, during a freezing chamber refrigerating operation, the refrigerating is carried out using the refrigerating cycle for freezing so as to refrigerate at a low evaporating temperature, while during the refrigerating chamber refrigerating operation, the refrigerating is carried out using the refrigerating cycle for refrigerating so as to operate at a high evaporating temperature so that a blow-off cold-air temperature is elevated and a humidity in the refrigerating chamber is held high even if an amount of food accommodated in the refrigerating chamber is small.
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公开(公告)号：JPH09236372A
公开(公告)日：1997-09-09
申请号：JP6535296
申请日：1996-02-26
Applicant: MATSUSHITA REFRIGERATION
Inventor： KAWADA YOSHINORI , ASAKAWA OSAMU , KIMURA YOSHITO , HYODO AKIRA
Abstract: PROBLEM TO BE SOLVED: To maintain the temperature in a room in a predetermined temperature range by preventing the temperature of a freezer chamber and a refrigeration chamber from rising due to the heat generated by a defrosting heater means. SOLUTION: A freezer chamber blowoff port 6 for feeding cold air to a freezer chamber 2 and a refrigeration chamber blowoff port 7 for feeding cold air to a refrigeration chamber 3 are formed in a cooler chamber 4 housing an evaporator 8, and at the start of a freezing cycle operation after the completion of a defrosting operation, the freezer chamber blowoff port 6 and refrigeration chamber blowoff port 7 are kept in an open state by means of a blowoff port switching means 14 until the temperature of the cooler chamber becomes a predetermined temperature to prevent heated air from flowing into the refrigeration chamber 3.
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公开(公告)号：JPH09229532A
公开(公告)日：1997-09-05
申请号：JP6215196
申请日：1996-02-23
Applicant: MATSUSHITA REFRIGERATION
Inventor： KIMURA YOSHITO , ASAKAWA OSAMU , FUJIMOTO MASATSUGU , HYODO AKIRA , KAWADA YOSHINORI
Abstract: PROBLEM TO BE SOLVED: To prevent foodstuffs in a refrigerator chamber from being frozen or icing within the refrigerator chamber, reduce drying in the refrigerator chamber and improve keeping a freshness of the foodstuffs in the refrigerator at a low cost. SOLUTION: One evaporator 19 is partitioned by a partition member 20 into a first evaporator region 21 and a second evaporator region 22. A cooling air passage 23 of a freezing chamber includes a first evaporator region 21 and a freezing chamber cold air circulating means 24. With such an arrangement as above, air in the freezing chamber and air in the refrigerator chamber are cooled independently from each other and each of suitable temperatures of the discharged air can be attained, so that the temperature within each of the chambers can be made uniform at a low cost.
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公开(公告)号：JPH0989435A
公开(公告)日：1997-04-04
申请号：JP24904295
申请日：1995-09-27
Applicant: MATSUSHITA REFRIGERATION
Inventor： ASAKAWA OSAMU , KIMURA YOSHITO , YAMAMOTO HIDEO
Abstract: PROBLEM TO BE SOLVED: To improve the efficiency by providing pressure reducing means for alternately switching the dampers of chambers during operating of a compressor to vary the evaporating temperature of an evaporator at the time of cooling the chambers, and a variable condenser having variable number of revolutions and a variable cooler fan. SOLUTION: The cold storage damper 5a of a cold storage chamber 3 is opened, the pressure reducing amount of pressure reducing means is simultaneously switched, and the evaporating temperature of an evaporator 7 is raised to the vicinity of the cold storage temperature. Thus, the suction pressure is raised, the refrigerant circulating amount of a compressor 6 becomes twice to three times as compared with the evaporating temperature at the time of cooling a deep freezing chamber 2, and the freezing capacity is increased. The pressure reducing amount of the pressure reducing means is switched, and the number of revolutions of the variable condenser fan 16 of a condenser 12 and the variable cooler fan 17 of an evaporator 7 are simultaneously increased. The number of revolutions is increased to increase the heat exchanger capacities of the condenser 12 and evaporator 7, and the refrigerating capacity meeting the increased refrigerant circulating amount can be effectively drawn.
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Patent Agency Ranking
公开(公告)号：JPH07190590A
公开(公告)日：1995-07-28
申请号：JP32850993
申请日：1993-12-24
Applicant: MATSUSHITA REFRIGERATION
Inventor： ASAKAWA OSAMU
Abstract: PURPOSE:To eliminate the possibility of an breakout of fire or explosion by a method wherein only a heat exchanging portion of an evaporating part is exposed within an inner box, an evaporating pipe part of an evaporator, a welded part or another welded part between the evaporating pipe, a suction pipe and a capillary tube are stored in a thermal insulating material. CONSTITUTION:Pressure of refrigerant is reduced by a capillary tube 11, the refrigerant is evaporated by an evaporating pipe 17 of an evaporator 8, the refrigerant is heat exchanged with air in an inner box 4 at a heat exchanging part 16 so as to cool an inside part of the inner box 4. The evaporated and gasified refrigerant passes through a suction pipe 12 and returns to a compressor 9. During such a normal operation as described above, in the case that either the evaporating pipe 17 or the welding part 18 is damaged due to either an inner cause or an outer cause and then ignitable refrigerant in a freezing cycle flows out, the flowed-out refrigerant is discharged out of a space part 19 into a surrounding atmosphere through the outer box 2, resulting in that the refrigerant does not advance into the inner box 4. Accordingly, even if there is a source of ignitable item such as a refrigerator temperature control means 13 or a door switch 15 within the inner box 4, possibility of ignition of fire or explosion is approximately zero.
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公开(公告)号：JPH07120114A
公开(公告)日：1995-05-12
申请号：JP27043593
申请日：1993-10-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： NODA TOSHINORI , ASAKAWA OSAMU , KINO AKIHIRO , MASATOKI YOSHIBUMI , KANEOKA SHINICHI
Abstract: PURPOSE:To provide cooling system for a refrigeration cold storage box in which refrigerant is forcibly retained in an evaporator at the time of defrosting and which can be effectively and efficiently defrosted in a short time at any time. CONSTITUTION:The refrigeration cold storage box comprises defrosting means 6 for heating and defrosting an evaporator 3, and refrigerant circulation control means 17 for controlling circulation of refrigerant to an outlet of the evaporator 3, wherein the means 17 is driven immediately before entering defrosting to control shut-OFF of a refrigerant channel.
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公开(公告)号：JPH055482A
公开(公告)日：1993-01-14
申请号：JP15853191
申请日：1991-06-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： YAMAMOTO HIDEO , ASAKAWA OSAMU
Abstract: PURPOSE:To prevent no-load operation by outputting a cutwater signal, when a water amount in a tank is decreased to a predetermined amount or less set larger than a fixed supply water amount by a fixed supply water means, so as to inhibit a pump and a valve to be turned on even when a supply water switch is on, in a supply water device for a tea dispenser or the like. CONSTITUTION:When an amount of water in a tank 19 is decreased to a predetermined value or less set larger than a fixed supply water amount by a fixed quantity supply water means 28, this amount of water in the tank is detected by a float switch 23. Then, a cutwater signal is output to a supply water inhibiting means 30 by a cutwater detecting means 29. The supply water inhibiting means 30 receives this cutwater signal to control the fixed amount supply water means 28 so that a pump 18 and a valve 20 are prevented from being turned on even when a supply water switch 22 is turned on.
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公开(公告)号：JPH04300510A
公开(公告)日：1992-10-23
申请号：JP6440191
申请日：1991-03-28
Applicant: MATSUSHITA REFRIGERATION
Inventor： MASATOKI YOSHIBUMI , ASAKAWA OSAMU
IPC: A47J31/00
Abstract: PURPOSE:To offer the tea leaves supply device which can supply surely tea leaves to a tea strainer filter by vibrating it at the time of opening a shutter by a simple structure, with regard to the tea leaves supply device of an automatic tea supply machine for green tea, black tea, etc. CONSTITUTION:The tea leaves supply device consists of a tea canister 1, a casing 2, auger 4 and a shutter 9, and an opening/closing operation of the shutter 9 is executed by a sector disk 6 provided on a shaft 5 fixed to the auger 4 and a rugged part 7 provided on the sector disk 6, a circular arc-like engaging part 11 of a shutter 8 joined to the sector disk 6 and a projecting part 12 provided on the engaging part 11.
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公开(公告)号：JPH03231618A
公开(公告)日：1991-10-15
申请号：JP2652790
申请日：1990-02-06
Applicant: MATSUSHITA REFRIGERATION
Inventor： YAMAMOTO HIDEO , ASAKAWA OSAMU , ODA MASATAKA
Abstract: PURPOSE:To prevent the title apparatus from being heated without water at the time when an electric current is continuously applied to a heater because of a thermal detector trouble or the like by providing a temperature rise- protecting means whereby the heater is forcibly turned off when a boiling signal from a boiling detector is continued beyond a definite time. CONSTITUTION:A thermal detector 12 is fixed in a hot water tank 2, and a boiling detector 13 is closely fixed on the outer wall of an overflow pipe 15, of which the one end is open at the upper part of the side face of the tank 2 and the other end is open at a drain tank 14. A control device 16 has a temperature-retaining control means 20 whereby a thermal signal from the thermal detector 12 is compared with a first criterion for the thermal signal and when the thermal signal is higher than the criterion, a heater is turned off, and a boiling control means 21 whereby when a boiling signal is inputted from a boiling detector 13, the heater is turned off in a time of A, and a temperature rise-protecting control means 22 whereby when the boiling signal is continued for a time of B longer than the time of A, the heater is turned off.
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