公开(公告)号：JPH06313658A

公开(公告)日：1994-11-08

申请号：JP10239093

申请日：1993-04-28

Applicant: MATSUSHITA REFRIGERATION

Inventor： YAMAMOTO OSAMU ,  MURAKAMI YASUHISA ,  MORI SHIGERU ,  TANAKA MASAYUKI

IPC: F25C1/10

Abstract: PURPOSE:To provide an automatic icemaker in which a water supply pipe is defrosted by a heater attached to it while a motor and a water supply pump motor are not operated so that icemaking can be always stably continued. CONSTITUTION:A water supply pipe and a pipe heater 16 attached to the pipe are interrupted to drive the heater 16 during driving of a motor 7. A control is provided to interrupt driving of the heater 16 during driving of a water supply pump motor 5.

公开(公告)号：JPH04158180A

公开(公告)日：1992-06-01

申请号：JP28504490

申请日：1990-10-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： MURAKAMI YASUHISA ,  SUDA JUNICHI

IPC: F25D11/00 ,  F25D21/08 ,  G08B21/00

Abstract: PURPOSE:To prevent foods from being decayed by a method wherein a case in which a time of a defrosting timer when a temperature higher than a set temperature is detected is shorter than a set time is alarmed by an alarm means after confirmation of the set times under a control of a control means. CONSTITUTION:A control means 18 for a micro-computer or the like has an operation timer 15 for counting an operating time of a compressor 9 in it, a defrosting timer 19 for counting an electrical energization time of a defrosting heater 10, and a counter 20 for counting the number of times in which the defrosting time 19 reaches a set time. The control means 18 has a temperature sensing means 8 and a defrosting temperature sensing means 11 as inputs thereto. Driving means 13 and 14 and an alarm means 17 are connected to its output. A counter is operated in concurrent with an electrical energization of the defrosting heater 10 after the compressor 9 is calculated for a predetermined time and then an electrical energization time of the defrosting heater 10 is measured. A temperature of a defrosting temperature sensing means 11 is higher than a set value, an electrical energization for the defrosting heater 10 is stopped and at the same time a time in the counter is read and after confirmation of a predetermined number of times for a case in which the time is shorter than the set value, it is judged that the defrosting temperature sensing means 11 is inferior and this is informed to a user with an alarm means 17.

公开(公告)号：JPH063034A

公开(公告)日：1994-01-11

申请号：JP15656792

申请日：1992-06-16

Applicant: MATSUSHITA REFRIGERATION

Inventor： MURAKAMI YASUHISA

IPC: F25D21/04 ,  F25D23/02

Abstract: PURPOSE:To obtain a door apparatus which enables the prevention of dew formation and an excessive temperature rise on the surface of a partition body by allowing the keeping of the surface temperature of the partition body at a proper value even when it is employed for a refrigerating chamber with a low internal temperature concerning the door apparatus for a freezer/ refrigerator. CONSTITUTION:This apparatus is made up of an outside air temperature detection means 29 to detect an outside air temperature, a control means 30 comprising a microcomputer or the like to fetch an input signal from the outside air temperature detection means 29, a drive means 27 which works by an output signal from the control means 30 and a sweating prevention heater 13 to be operated by the drive means 27. An operation factor of the sweating prevention heaer 13 is changed according to the outside air temperature.

公开(公告)号：JPH0428984A

公开(公告)日：1992-01-31

申请号：JP13396990

申请日：1990-05-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： MURAKAMI YASUHISA ,  SUDA JUNICHI

IPC: F25D23/12 ,  F25D11/02

Abstract: PURPOSE:To prevent abnormal buzzing of a defrosting buzzer due to noises or the like by a method wherein a buzzer timer for calculating buzzing time period of the defrosting buzzer is provided and designed so that when the buzzer timer calculates a prescribed time period, a defrosting controller is returned to an initial state of power source closing. CONSTITUTION:When an emergency occurs in data of a RAM 18 due to noises or the like during a defrosting control, setting of a buzzing time period of a defrosting buzzer 24 becomes unlimited. At this time, when ON is set on a memory state of the defrosting buzzer 24 even if a defrosting switch 20 is OFF, the memory state of the defrosting buzzer 24 is output. Further, as the defrosting buzzer 24 is ON and the buzzing time period is set unlimited, a transistor 25 is turned ON to make the defrosting buzzer 24 buzz over a prescribed time period. Next, as the defrosting buzzer 24 is ON, a buzzer time 28 is turned ON to calculate a buzzing time period of the defrosting buzzer 24. When the buzzing time period reaches a set time period, a defrosting controller 27 returns to an initial state to clear the data of the RAM 18, latches normal data, starts again a normal defrosting control, and prevents the defrosting buzzer 24 from buzzing continuously without limit.

公开(公告)号：JPH07305926A

公开(公告)日：1995-11-21

申请号：JP9727394

申请日：1994-05-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： MURAKAMI YASUHISA

IPC: F25C1/10

Abstract: PURPOSE:To always continue stable icemaking by receiving excessive cold gas from a blower by icemaking temperature detecting means by continuously operating a compressor and the blower for a long period, and so sufficiently increasing an icemaking cooling time as not to complete the icemaking in an unfrozen state when it becomes impossible to follow up a water temperature in an icemaking vessel. CONSTITUTION:The automatic icemaker comprises control means 25 having a compressor continuous operation timer 27 for counting the operating time of a compressor 21, a timer 16, a water supply timer 15, a microcomputer, etc., which input from temperature detecting means 2, position detecting means 9, horizontal position detecting means 10 and outputs from driving means 13, 14, 26 for moving a motor 7, a water supply pump motor 5 and the compressor 21.

公开(公告)号：JPH06300422A

公开(公告)日：1994-10-28

申请号：JP8714193

申请日：1993-04-14

Applicant: MATSUSHITA REFRIGERATION

Inventor： MURAKAMI YASUHISA

IPC: F25D21/04 ,  F25D23/02

Abstract: PURPOSE:To provide a door device capable of preventing vapor deposition, and excessive temperature rise of a partition member by keeping the surface of the partition member at an appropriate temperature even when the door device is used for a freezing chamber of a low inside temperature and the like. CONSTITUTION:The title device is provided with a temperature detecting means 21 for detecting the surface temperature of partition member, a control means 22 comprising a microcomputer and the like to which input signals are inputted by the temperature detecting means 21, a driving means 23 operated by output signals from the control means 22, and a sweat prevention heater 19 operated by the driving means 23.

公开(公告)号：JPH0755317A

公开(公告)日：1995-03-03

申请号：JP19706093

申请日：1993-08-09

Applicant: MATSUSHITA REFRIGERATION

Inventor： MURAKAMI YASUHISA ,  YAMAMOTO OSAMU ,  SUDA JUNICHI ,  MAEDA MUNEKAZU

IPC: F25D11/02 ,  F25D17/08 ,  G05D23/00

Abstract: PURPOSE:To prevent a loss in a temperature control function in a refrigerator when the refrigerator continues its operating state which is 'higher' or 'lower' than its specified value for a definite time. CONSTITUTION:There are provided a temperature detection means 10, which detects the temperature of a refrigerator and a control means 14 which comprises a timer 15 or a microcomputer which takes in an inlet signal from the temperature detection means 10 and estimates time, and a driving means 13 which operates based on an output signal from the control means 14 and a motor driven damper 12 which is operated with the driving means 13.

公开(公告)号：JPH063035A

公开(公告)日：1994-01-11

申请号：JP15657892

申请日：1992-06-16

Applicant: MATSUSHITA REFRIGERATION

Inventor： MURAKAMI YASUHISA

IPC: F25D21/04 ,  F25D23/02

Abstract: PURPOSE:To obtain a door apparatus which enables the prevention of dew formation and an excessive temperature rise on the surface of a partition body by allowing the keeping the surface temperature of the partition body at a proper temperature even when it is employed for a refrigerating chamber or the like with a low internal temperature concerning the door apparatus for the freezer/refrigerator. CONSTITUTION:This apparatus is made up of an outside air temperature detection means 30 to detect an outside air temperature, a partition body surface temperature detection means 31 to detect the surface temperature of a partition body, a control means 32 comprising a microcomputer or the like to fetch input signals from the outside temperature detection means 30 and the partition body temperature detection means 31, a drive means 27 which works by an output signal from the control means 32 and a sweating prevention heater 13 to be operated by the drive means 27. The temperature of the partition body is controlled to equal the outside air temperature.

公开(公告)号：JPH0593577A

公开(公告)日：1993-04-16

申请号：JP25505991

申请日：1991-10-02

Applicant: MATSUSHITA REFRIGERATION

Inventor： MURAKAMI YASUHISA

IPC: F25D21/04 ,  F25D23/02 ,  F25D29/00

Abstract: PURPOSE:To obtain a door device, capable of preventing the surface of a partitioning body from dewing and excessive temperature rise, by a method wherein the door device for a freezing refrigerator is permitted to maintain the surface temperature of the partitioning body at the optimum temperature even when the same device is employed for a freezing chamber and the like, whose inside temperature is low. CONSTITUTION:The title door device is constituted of a temperature detecting means 29, detecting the surface temperature of a partitioning body, a control means 30, consisting of a microcomputer and the like inputting an input signal from the temperature detecting means 29, a driving means 27, operated by an output signal from the control means 30, and a perspiration preventing heater 13, operated by the driving means 27.

公开(公告)号：JPH04217772A

公开(公告)日：1992-08-07

申请号：JP40263990

申请日：1990-12-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： MURAKAMI YASUHISA ,  SUDA JUNICHI

IPC: F25D23/00

Abstract: PURPOSE:To prevent continuance of operation of an alarming device due to noise during closing of a door by a method wherein, when, after when an open- door alarming device is operated, an operating time is counted, a count value amounts to a set time, a door release alarm control device is initialized. CONSTITUTION:A control circuit 13 is provided with an alarming device stop timer 14 to count a time, in which an alarming device 7 is operated, for a given time in addition to door timers A11 and B12 to integrate a door opening time. For example, when data of an RAM 9 is brought into abnormality due to noise and data indicating the state of a door detector 1 or 2 is changed into data indicating a door-open state despite of a door being closed, a control circuit 13 operates the alarming device 7 through an oscillating circuit 6 and turns ON an alarming device stop timer 14. When a count value amounts to a given time, data of the RAM 9 are all cleared, initializing is effected, and normal data is inputted, whereby continuance of announcement of an open-door alarm is prevented from occurring.