公开(公告)号：JPH02122177A

公开(公告)日：1990-05-09

申请号：JP27490688

申请日：1988-10-31

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMAMOTO OSAMU

IPC: F25C1/18

Abstract: PURPOSE:To surely produce transparent ice by a method wherein forced pre- cooling is immediately halted when ice making is started during forced pre- cooling operation, and water is rapidly cooled continuously only by a cooling plate during cooling period in which water reaches 0 deg.C. CONSTITUTION:When an ice making switch 20 is turned on by a user during defrosting operation, 'H' signal is input to a timer 43, and 'H' signal is output from 'd' output for a time period t'1, causing a transistor 30 to be turned ON and a relay contact 23 to be closed, so that a compressor 21 and a fan 6 are brought into continuous operation. During this period, the water in an ice making tray 15 is rapidly cooled without heating by a heating plate 12, and reaches 0 deg.C in a short time period. Next, when time period t'1 has elapsed, 'H' output is output from 'e' output of a timer 37 for a time period t'0 during which a transistor 36 is turned ON and a relay contact 24 is closed, so that a heater 11 is turned ON. Thereby, the heating plate 12 above the surface of water in the ice making tray 15 is heated so as not to freeze the surface first but to gradually cool and freeze the water from a cooling plate 13 on the bottom towards the surface. Then, transparent ice is made after a time period t'2 since output is changed to 'e' output.

公开(公告)号：JPH01208681A

公开(公告)日：1989-08-22

申请号：JP3427988

申请日：1988-02-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMAMOTO OSAMU ,  OHASHI YOSHINORI

IPC: F25C1/18

Abstract: PURPOSE:To prevent the elongation of an ice making time due to the opening and/or closing of a door and obtain transparent ice blocks stably, by a method wherein heating is stopped for a given period of time during opening or after closing the door while the time of stopping the heating after closing the door is changed especially in accordance with the time of opening the door, when the opening and closing of the door for a cooling chamber are effected during ice making. CONSTITUTION:The conduction of a heater 11 is stopped during a time (TX+T1) or a time (TX+T2), in which the time Tx during opening of a door is added with given times T1, T2 after closing the door 18 being opened. External high-temperature air invades into a refrigerating chamber by the opening and/or closing of the door and the temperature of a cooling plate or a heating plate 10 show increasing tendency, however, the conduction of the heater is stopped simultaneously, therefore, the temperature of the heating plate is reduced rapidly and the temperature of the cooling plate is also reduced by the affection of the temperature reduction of the heating plate. Then, the temperature condition in the refrigerating chamber is corrected substantially to a condition proximated to a case wherein the opening and/or closing of the door are not effected. Accordingly, the connecting speed of ice blocks will never be deteriorated so much and an ice making time (t2) will never be elongated so much compared with the ice making time when the door is not opened or closed.

公开(公告)号：JPS6365266A

公开(公告)日：1988-03-23

申请号：JP20991986

申请日：1986-09-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMAMOTO OSAMU

IPC: F25D11/02

公开(公告)号：JP2589740B2

公开(公告)日：1997-03-12

申请号：JP4526188

申请日：1988-02-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMAMOTO OSAMU ,  OOHASHI YOSHINORI ,  OONISHI KENJI

IPC: F25C1/18

公开(公告)号：JP2589734B2

公开(公告)日：1997-03-12

申请号：JP3427988

申请日：1988-02-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMAMOTO OSAMU ,  OOHASHI YOSHINORI

IPC: F25C1/18

公开(公告)号：JPH08271109A

公开(公告)日：1996-10-18

申请号：JP7168595

申请日：1995-03-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMAMOTO OSAMU

IPC: F25D23/00 ,  F25D11/02

Abstract: PURPOSE: To perform a low speed rotation of a compressor and to prevent a foodstuf from being decayed under poor cooling due to a seizure of a winding held in a compressor by a method wherein an operation of the compressor is performed under a low speed rotation in the case that a blower for the compressor can not be operated due to trouble or cutting of wire or the like. CONSTITUTION: A control device for refrigerator is provided with a blower 7 for a compressor and a rotation sensing means 12. When the blower for the compressor is not operated, a compressor 6 is operated under a low speed rotation with a compressor rotating means 24. When the blower for the compressor is not operated, this state is indicated by an alarm means to an alarm device.

公开(公告)号：JPH08261623A

公开(公告)日：1996-10-11

申请号：JP6775495

申请日：1995-03-27

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMAMOTO OSAMU

IPC: F25D11/02

Abstract: PURPOSE: To protect foodstuffs from being excessively cooled or non-cooled and spoiled by driving a compressor or a fan at a temperature of an ice making temperature detection means attached with an automatic ice maker when a temperature detection means in a freezer compartment fails due to breaking of wire. CONSTITUTION: There are provided an interior temperature detection means 10 and an ice making detection means 13 and a failure detection means 30 which detects an operational failure of the interior temperature detection means 10. When the interior temperature detection means 10 is deviated from a preliminarily determined temperature range, a control means 29 is so designed that a compressor 11 and a fan 9 may be driven or halted according to the temperature of the ice making detection means 13.

公开(公告)号：JPH07218064A

公开(公告)日：1995-08-18

申请号：JP1095494

申请日：1994-02-02

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMAMOTO OSAMU

IPC: F25C1/10

Abstract: PURPOSE:To prevent wasteful consumption of electric power by stopping in an icemaking complete state when a switch for unnecessary time of ice is pressed, reducing a current flow rate of a heater for melting frost adhered to a feed water pipe, and returning to an original current flow rate at the time of resuming icemaking in an automatic icemaker for automatically making ice. CONSTITUTION:This automatic icemaker comprises icemaking stopping means 12, a heater 6, current flow rate control means 20, and control means 19 for so reducing a current flow rate by the means 20 as to decrease energization of the heater 6 at the time of stopping icemaking.

公开(公告)号：JPH0763465A

公开(公告)日：1995-03-10

申请号：JP21165593

申请日：1993-08-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： TANAKA MASAYUKI ,  YAMAMOTO OSAMU ,  SUDA JUNICHI

IPC: F25D11/00 ,  F25D11/02 ,  F25D21/06

Abstract: PURPOSE:To improve convenience and prevent any food from being rotten owing to continuation of defrosting by automatically completing the defrosting even if the defrosting is started with a defrosting switch. CONSTITUTION:There is provided a control circuit 26 in which a temperature detector 3 and a defrosting switch 4 are connected to an input of control means 27 such as a microcomputer, and driving means 6 for actuating a heater 5 is connected to an output of the control means 27.

公开(公告)号：JPH05215453A

公开(公告)日：1993-08-24

申请号：JP1598192

申请日：1992-01-31

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMAMOTO OSAMU ,  YAMAUCHI TAKASHI

IPC: F25D11/02 ,  F25D17/06 ,  F25D29/00

Abstract: PURPOSE:To obtain a stabilized inside temperature at all times by a method wherein the time of opened condition of a damper for a refrigerating chamber is counted to change a temperature whereat the high-speed rotation of a fan is started. CONSTITUTION:The opening and/or closing of a damper 8 are controlled in accordance with the detecting temperature of a refrigerating chamber temperature detecting means 10 detecting a temperature in a refrigerating chamber 3 and a time during the opened condition of the damper 8 is counted by a timer 26 to change the rotating number of a fan 6 by a rotating number control means 22. When a temperature in a freezing chamber 2 is increased and becomes higher than a set value, the fan 6 is operated with an usual rotation and a compressor 4 is also operated. In this case, a period of time of the timer 26 which counts the opening time of the damper 8 is longer than a predetermined period of time, a temperature whereat the high-speed rotation of the fan 6 is started is lowered slightly to bring the fan into the high-speed operation thereof quickly. Thus, the temperature of a freezing chamber 2 upon a high load can be moved to a range of a set temperature quickly in a short period of time even when a cooler 5 is clogged.