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

IPC: F25D21/06 ,  F25D21/08

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.

公开(公告)号：JPH10300323A

公开(公告)日：1998-11-13

申请号：JP10559697

申请日：1997-04-23

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAMANO YASUKI ,  NODA TOSHINORI ,  KANEOKA SHINICHI

IPC: F25D23/00

Abstract: PROBLEM TO BE SOLVED: To prevent condensation and reduce humidifying amount and decrease amount of frost on a cooler by keeping humidity distribution in a refrigerator constant. SOLUTION: By installing a humidifier 8 in the downstream side of a cooler 6a in cooling air flow a required humidity is obtained in a vicinity of a cold air outlet part 20 and a uniform humidity is kept within a refrigerator chamber and supplied moisture can be used for uniformly humidifying the interior of the refrigerator so that condensation is prevented from occurring and humidifying amount is decreased and amount of frost on the cooling device can be decreased.

公开(公告)号：JPH09178322A

公开(公告)日：1997-07-11

申请号：JP33457295

申请日：1995-12-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAMITSUJI TOSHIO ,  NODA TOSHINORI ,  ENDO KATSUMI ,  ODA MASATAKA ,  MORISHITA KENICHI ,  HAMANO YASUKI ,  KANEOKA SHINICHI ,  KUBOTA YOSHITAKA ,  KURIMOTO KAZUNORI

IPC: F25D11/02 ,  F25B1/00

Abstract: PROBLEM TO BE SOLVED: To save the energy of a refrigerator by realizing appropriate number of revolution of a compressor and appropriate flow rate of an electric-driven expansion valve to cope with the change in the temperature of a cooler associated with opening/closing of an air passage control damper of the refrigerator on which an inverter is mounted to improve the operational efficiency and the cooling system efficiency of the refrigerator. SOLUTION: The number of revolutions of a compressor and the flow rate of an electric-driven expansion valve are determined by the number of revolutions and a flow rate operating means 25 using the output of an in-freezer differential temperature operating means 24, the number of revolutions and the flow passage resistance value are corrected by a number of revolutions and a flow rate correcting means 41 using the output from a cooler temperature detecting means 42, the number of revolutions of the compressor is controlled by an inverter circuit 26 by the command from the number of revolutions and the flow rate correcting means 41, and the flow rate is controlled by an electrically driven expansion valve control circuit 45.

公开(公告)号：JPH09138053A

公开(公告)日：1997-05-27

申请号：JP29674495

申请日：1995-11-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAMANO YASUKI ,  KUBOTA YOSHITAKA ,  ODA MASATAKA ,  NODA TOSHINORI ,  ENDO KATSUMI ,  KAMITSUJI TOSHIO ,  MORISHITA KENICHI ,  KANEOKA SHINICHI ,  KURIMOTO KAZUNORI

IPC: F25D21/06 ,  F25B47/02

Abstract: PROBLEM TO BE SOLVED: To increase the efficiency of defrosting, save energy, and to contrive freshness of a food at a high value by a method wherein defrosting is executed by operating a compressor through superlow rotation. SOLUTION: When the operation time of a number of revolution variable type (capacity variable type) compressor 17 attains a specified time by a defrosting timer 11, the number of revolutions variable type (capacity variable type) compressor 17 is operated at low rotation and cold air feed means 10 is stopped. When the number of revolutions variable type (capacity variable type) compressor 17 is operated at low rotation, the vaporization temperature of a refrigerant is increased to at least 0 deg.C being temperature at which frost is molten, and the temperature of a vaporizer 3 becomes also at last 0 deg.C. Frost adhered to the vaporizer 3 is defrosted through direct heat-exchange with the vaporizer 3 the temperature of which is at least 0 deg.C. This constitution improves the efficiency of defrosting, saves energy, and maintains freshness of a food at a high value.

公开(公告)号：JPH09138048A

公开(公告)日：1997-05-27

申请号：JP29674095

申请日：1995-11-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： ENDO KATSUMI ,  KUBOTA YOSHITAKA ,  HAMANO YASUKI ,  NODA TOSHINORI ,  MORISHITA KENICHI ,  KAMITSUJI TOSHIO ,  KANEOKA SHINICHI ,  ODA MASATAKA ,  KURIMOTO KAZUNORI

IPC: F25D11/02

Abstract: PROBLEM TO BE SOLVED: To perform hihgly efficient operation control by a method wherein the number of revolutions of a compressor is controlled by a temperature differ ence between the temperature of a cooler and a set temperature. SOLUTION: A refrigerating chamber temperature is detected by a refrigerating chamber temperature detecting means 21, a set temperature is detected by a refrigerating chamber temperature setting means, and on/off of a compressor 17 are determined by a temperature difference therebetween. The temperature of a cooler 13 is detected by a cooler temperature detecting means 42 and the number of revolutions of a compressor 17 is decided by a number of revolutions computing means 25 by means of a temperature difference between a cooler temperature and a cooler set temperature. By controlling the number of revolutions of the compressor by an inverter circuit 26, a cooler temperature is not reduced more than necessary to cool a chamber, and high-efficient operation is performed.

公开(公告)号：JPH09138045A

公开(公告)日：1997-05-27

申请号：JP29673595

申请日：1995-11-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： ODA MASATAKA ,  KANEOKA SHINICHI ,  MORISHITA KENICHI ,  HAMANO YASUKI ,  NODA TOSHINORI ,  KUBOTA YOSHITAKA ,  ENDO KATSUMI ,  KURIMOTO KAZUNORI ,  KAMITSUJI TOSHIO

IPC: F25D17/06 ,  F25D11/00 ,  F25D21/06

Abstract: PROBLEM TO BE SOLVED: To maintain freshness of a food by a method wherein the number of revolutions of a refrigerator fan is reduced to a minimum and the increase of a refrigerator temperature is suppressed to a minimum, in operation right after defrosting of a refrigerator on which an inverter is mounted. SOLUTION: By detecting a defrosting completion signal from a defrosting completion detecting means 10, an output is fed to a number of revolutions of fan correcting means 12. The minimum number of revolutions is selected in getting priority over the number of revolutions decided by a temperature difference between a refrigerator temperature and a set temperature. Cooling air has the efficiency of heat-exchange being improved in such a away that the number of revolutions of a refrigerator fan 8 is suppressed by being delayed by a time in which operation of a timer 13 is completed or temperature by a vaporiser temperature detecting means attains a given value and an airflow is reduced, and the cooling air is fed. Thereafter, the number of revolutions is increased to a value decided by a temperature difference between the refrigerator temperature and the set temperature and a cooling airflow is increased.

公开(公告)号：JPH08285431A

公开(公告)日：1996-11-01

申请号：JP8812795

申请日：1995-04-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： ONISHI YASUTOMO ,  NODA TOSHINORI ,  YAMAMOTO HARUYOSHI ,  HAMANO YASUKI ,  KANEOKA SHINICHI ,  KUBOTA YOSHITAKA ,  MORISHITA KENICHI

IPC: F25D11/02

Abstract: PURPOSE: To provide a controller for a refrigerator capable of setting in-chamber desired temperatures in a time zone of low frequency in use during the night and the like to a level higher than preset temperatures and reducing power consumption. CONSTITUTION: A controller for a refrigerator comprises an in-chamber temperature detecting means 1 for detecting temperatures in a freezing chamber and a refrigerating chamber, an in-chamber temperature setting means 4 for setting in-chamber desired temperatures, an in-chamber temperature regulating means 14 for regulating in-chamber temperatures to desired temperatures, a low use frequency time zone determining means 8 for determining a time zone of low frequency in use during the night and the like, and a preset temperature changing means 11 for changing the desired temperatures in the time zone determined by the low use frequency time zone determining means 8 to a level higher than the in-chamber desired temperatures set by the in-chamber temperature setting means 4.

公开(公告)号：JPH08247620A

公开(公告)日：1996-09-27

申请号：JP5432595

申请日：1995-03-14

Applicant: MATSUSHITA REFRIGERATION

Inventor： NAKANO AKIRA ,  NODA TOSHINORI ,  SHIMOMURA NOBUO ,  HAMANO YASUKI ,  KANEOKA SHINICHI ,  KUBOTA YOSHITAKA

IPC: F25D19/00 ,  F25D23/00

Abstract: PURPOSE: To secure high heat exchange characteristic of a condenser provided in a machine chamber of a refrigerator body and high heat dissipation property of a compressor. CONSTITUTION: A refrigerator includes in a rear and lower part of a refrigerator body a machine chamber 2 including a condenser 5, a compressor 6, an impeller 7 of a crossflow fan, an outer box 3 for partitioning the refrigerator body and the machine chamber 2, and a bottoms plate on which the condenser 5 and the compressor 6 are provided parallely. In the refrigerator, the outer box 3 is configured into a smooth curved surface bulged to the side of the refrigerator body and the side of an air intake in a bottom plate is brought into close contact with the impeller 7 and folded downward by 90 degree.

公开(公告)号：JPH08189750A

公开(公告)日：1996-07-23

申请号：JP419695

申请日：1995-01-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： KANEOKA SHINICHI ,  NODA TOSHINORI ,  SHIMOMURA NOBUO ,  HAMANO YASUKI ,  KUBOTA YOSHITAKA

IPC: F25D19/00 ,  F25D21/14 ,  F25D23/00

Abstract: PURPOSE: To increase the heat-exchanging efficiency of a condenser without enlarging a machine chamber by a method wherein the condenser, a blower, compressor and evaporation tray are arranged in the machine chamber which is partitioned at a lower rear part of a refrigerator main body, and the blower is arranged on the air flow upstream side of the condenser. CONSTITUTION: A machine chamber is formed at a lower rear part of a refrigerator main body 1 for which a heat insulating material is inserted between an external box and internal box. Then, the machine chamber 2 is constituted of an external box bottom plate 3, condenser 4, blower 5 which is arranged on the air flow upstream side of the condenser 4, and mounting plate 7 on which a compressor 6 is mounted, and a tilted surface part is provided on the external box bottom plate 3. Then, a front side air inlet 9 is provided on the external box bottom plate 3 of the refrigerator main body 1, and a slit cover 18 to prevent mouse from entering is provided. Then, on a machine chamber cover 8, a plurality of slit-form rear side air inlets 10, and a plurality of slit-form air discharging ports 11 are provided, and the inside of the machine chamber is partitioned into right and left two chambers by a partitioning plate 12. Then, a bell-mouth 12a is provided on the partitioning plate 12, and an evaporation tray 13 to receive defrosting water is arranged directly above the compressor 6.

公开(公告)号：JPH08189749A

公开(公告)日：1996-07-23

申请号：JP420695

申请日：1995-01-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAMANO YASUKI ,  NODA TOSHINORI ,  SHIMOMURA NOBUO ,  KANEOKA SHINICHI ,  KUBOTA YOSHITAKA

IPC: F25D19/00

Abstract: PURPOSE: To ensure the high heat-exchanging property of a condenser, and reduce noises by preventing an air convection from short-circuiting. CONSTITUTION: At a lower rear part of a refrigerator main body 1, a machine chamber 2 is partitioned with an external box bottom plate and mounting plate. Then, on the mounting plate, a condenser 4, blower 5 which is equipped with a partitioning plate 11 with a bell-mouth 12, compressor 6 and evaporation tray are provided. On a machine chamber cover 8, a rear side air inlet 8a and air discharging port 8b are provided, and a front side air inlet 9 is provided on the tilted surface part of the external box bottom plate at a front part of the machine chamber 2. Then, on the bottom of the mounting plate, a shielding plate 15 which hangs to a floor surface, extending to the total width of the refrigerator main body, is provided.