公开(公告)号：JP2001118138A

公开(公告)日：2001-04-27

申请号：JP29506699

申请日：1999-10-18

Applicant: MATSUSHITA REFRIGERATION

Inventor： ONISHI YASUTOMO ,  KUBOTA YOSHITAKA ,  NOJIMA HAJIME

IPC: G07F9/10 ,  G07F11/70

Abstract: PROBLEM TO BE SOLVED: To precisely control temperature without regard to the primary temperature and heat capacity of a container housing a beverage by rapidly heating the beverage in the container. SOLUTION: This heater of a beverage in a container is provided with a container holding means 7, which is in the form of a bottomed cylinder for making. warm water and a beverage container 6 in contact with each other by the opening part of a side face and holds the container 6 within a tank 2 so that the top surface part of the container 6 may be projected on the surface of the hot water within the tank, a rotation means mainly comprising a motor 18 for rotating and moving the means 7 holding the container 6, an infrared sensor 21 for detecting infrared rays irradiated upward from the top surface of the container 6 and a beverage heating controlling means which stops driving of the motor 18 at the time of detecting that the temperature of the beverage becomes a heating target temperature based on the detecting result of the sensor 21 and buzzing to report the finish of heating. Thus, the beverage in the container 6 is heated rapidly, thereby temperature control is precisely executed without regard to the primary temperature and heat capacity of the container 6.

公开(公告)号：JPH11108522A

公开(公告)日：1999-04-23

申请号：JP27235797

申请日：1997-10-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： KUBOTA YOSHITAKA ,  OGAWA KEIJI

IPC: F25D11/00

Abstract: PROBLEM TO BE SOLVED: To achieve a lowering of the level of a terminal voltage as noise and a power as noise by providing a gate circuit between a synthesizing means and an inverter circuit to relax a rising characteristic when turning off a semiconductor switch. SOLUTION: A gate circuit 4 is constituted of a diode 4a1 and resistances 4b1, 4b2 and 4c and transmits a semiconductor switch control pulse from an inverter control circuit 5 separately to six semiconductor switches 3a-3f of an inverter circuit 3. The use of the gate circuit, allows changing of a gate resistance value in the pulse rising or falling of the semiconductor switch 3b. Thus, the pulse falling time of the semiconductor switch 3b can be delayed to relax changes in the output current and the output voltage thereby lowering a noise terminal voltage and a noise power.

公开(公告)号：JPH10205950A

公开(公告)日：1998-08-04

申请号：JP598597

申请日：1997-01-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGATA HIDEO ,  OGAWA KEIJI ,  HAMAOKA KOJI ,  OGAWARA HIDEJI ,  YOSHIDA IZUMI ,  KUBOTA YOSHITAKA ,  KURIMOTO KAZUNORI

IPC: F25D11/00

Abstract: PROBLEM TO BE SOLVED: To provide an operation control device for a refrigerator in which the number of failures in starting a DC electric motor is reduced by a method wherein an energization of the DC electric motor is avoided in the case that a high load torque is applied to the DC electric motor at the time of starting energization of it. SOLUTION: Whether or not a freezing cycle 2 is made stable from a time just after stopping of a DC electric motor 7 to a state in which a compressor 5 can be energized is discriminated by a first freezing cycle stabilization discriminating means 17 on the basis of data attained from a discharged gas pressure sensor 16. In the case that it is not in a stable state, the compressor 5 is not energized even if an output signal of a refrigerator temperature control means 15 is produced and at the same time a refrigerator fan 6 is operated at a high speed. With such an arrangement as above, it is possible to avoid an energization of the DC electric motor 7 in the case that a high load is applied to the DC electric motor and so the number of failures in starting the DC electric motor becomes less.

公开(公告)号：JPH09303927A

公开(公告)日：1997-11-28

申请号：JP11871896

申请日：1996-05-14

Applicant: MATSUSHITA REFRIGERATION

Inventor： KUBOTA YOSHITAKA ,  OGAWA KEIJI ,  HAMAOKA KOJI ,  OGAWARA HIDEJI

IPC: F25D11/00 ,  F25B1/00

Abstract: PROBLEM TO BE SOLVED: To obtain an operation controller for refrigerator, which reduces the number of times of faulty starting of a DC motor, by avoiding the starting of the DC motor in a case when a load torque, applied on the DC motor upon starting, is large. SOLUTION: A motor controller 7 for compressor, which drives a DC motor 6 so as to keep the internal temperature of a refrigerator in constant based on temperature data detected by an internal temperature sensor 12 of the refrigerator, and a waiting time determining means for starting are provided to determine a time, immediately after the stopping of the DC motor 6 until a refrigerating cycle 2 is stabilized into a condition that the compressor can be started next time, and count the waiting time for starting by a timer count means 17 whereby the starting of the DC motor in a case when a load torque, applied on the DC motor 6 upon starting, is large can be avoided and an operation controller for a refrigerator, which reduces the number of times of faulty starting of the DC motor, can be obtained.

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：JPH0968200A

公开(公告)日：1997-03-11

申请号：JP22093495

申请日：1995-08-29

Applicant: MATSUSHITA ELECTRIC WORKS LTD ,  MATSUSHITA REFRIGERATION

Inventor： MIZUSHIMA TAKEFUMI ,  FUKUNAGA HIDEO ,  NODA TOSHINORI ,  SUZUKI SOUZOU ,  HAMANO YASUKI ,  KUBOTA YOSHITAKA

IPC: F04D29/38

Abstract: PROBLEM TO BE SOLVED: To provide a propeller fan which can reduce generation of noise when the fan is rotated. SOLUTION: A propeller fan is formed by radially providing a plurality of sheets of blades 1. R1 is assumed for the center in a circumferential direction in a root part 2 of the blade 1, and R2 is assumed for the center in a circumferential direction in a peripheral part of the blade 1. When O is assumed for the center of rotation of the blade 1, an angle formed between a line connecting O to R1 and a line connecting O to R2 is 18 to 22 deg., a line P connecting R1 to R2 is tilted to a suction side at an angle of 22 to 27 deg. to a surface S vertical to a rotary shaft passing through R1 , and a curved point 4 is provided in a blade section, in a sectional shape in a circumferential direction of the blade 1. The blade 1 is formed so that a delivery side is a protrusive surface into a protrusive shape from a leading edge in a rotational direction of the blade 1 to the curved point 4 and the delivery side is a recessed surface into a recessed shape from the curved point 4 to a trailing edge in a rotational direction of the blade 1.

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.