公开(公告)号：JP2002064992A

公开(公告)日：2002-02-28

申请号：JP2000249351

申请日：2000-08-21

Applicant: MATSUSHITA REFRIGERATION

Inventor： OUCHIYAMA TOMONORI ,  HAMAOKA KOJI ,  KODA ATSUSHI ,  TANAKA HIDENAO ,  OGAWARA HIDEJI

IPC: F25D11/00 ,  H02M7/06 ,  H02M7/5387 ,  H02P6/06 ,  H02P6/08 ,  H02P6/18 ,  H02P6/182

Abstract: PROBLEM TO BE SOLVED: To maintain the better operating condition of a motor by eliminating a problem that the operating condition of a load becomes unstable when a voltage applied to the load is changed with a switch in a refrigerator. SOLUTION: When it is required to change the speed of the motor 25, the rotating speed of motor 25 is varied up to an intermediate speed which is the suitable rotating speed for changing the application voltage to a power module 24 for the load, and the voltage is changed after changing the rotating speed. Thereafter, rotating speed of motor is varied up to the target rotating speed. As a result, shortage of lubrication oil of the motor 25 can be avoided and low noise operation of motor can also be realized.

公开(公告)号：JP2002064989A

公开(公告)日：2002-02-28

申请号：JP2000249352

申请日：2000-08-21

Applicant: MATSUSHITA REFRIGERATION

Inventor： OUCHIYAMA TOMONORI ,  HAMAOKA KOJI ,  KODA ATSUSHI ,  TANAKA HIDENAO ,  OGAWARA HIDEJI

IPC: H02M7/06 ,  H02M7/12 ,  H02M7/5387 ,  H02P6/06

Abstract: PROBLEM TO BE SOLVED: To maintain better operating condition of a motor by eliminating a program that an application voltage is varied to a large extent with an irregular operation of a switch, and operating condition of a load such as a motor of a compressor is disturbed in the case where a voltage applied to a load is changed in an electric refrigerator. SOLUTION: A means for detecting an application voltage of a power module 24 for the load is provided. Accordingly, irregular operation of a motor 25 can be avoided by detecting irregular phenomenon and stopping the operation of the motor 25.

公开(公告)号：JPH10205895A

公开(公告)日：1998-08-04

申请号：JP1359797

申请日：1997-01-28

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F25B1/00

Abstract: PROBLEM TO BE SOLVED: To suppress stress and noise of a compressor by opening a valve for a short time to bring about pressure equilibrium while setting the time interval after stopping the compressor before delivering a start command within a set start waiting time before starting the compressor. SOLUTION: A freely opening/closing valve 6 is disposed at a position for bypassing the high pressure side of refrigeration cycle 5 to the low pressure side and a start waiting time setting means 12 sets a start waiting time required for starting a compressor 1 again without causing any lock after stopping thereof. A comparing means compares the start waiting time with a time interval immediately after stopping of the compressor before delivery of a stop command received from a timer count means 13. When the time interval is within the start waiting set time, the valve 6 is opened for a short time to bring about pressure equilibrium before starting the compressor 1.

公开(公告)号：JPH0984387A

公开(公告)日：1997-03-28

申请号：JP23810595

申请日：1995-09-18

Applicant: MATSUSHITA REFRIGERATION

Inventor： KURIMOTO KAZUNORI ,  OGAWA KEIJI ,  HAMAOKA KOJI ,  SHIBUYA HIROMI ,  OGAWARA HIDEJI ,  TSUJII YASUHIRO

IPC: F04B49/10 ,  H02P27/06 ,  H02P7/63 ,  H02P5/41

Abstract: PROBLEM TO BE SOLVED: To protect a circuit and a compressor from breakdown by suspending the operation thereof if lock is generated for N times continuously because if lock is generated in the compressor, stress is given to the circuit and compressor, giving thereto the breakdown in the worst case. SOLUTION: A motor controller for compressor comprises an AC power source 11, a rectifier circuit 12, an inverter circuit 13, a DC motor 14, a compressor 15, a position detecting means, a commutating means 17, a number of rotation command means 18, a lock judging means 19, a number of rotation command means 20, a lock counting means 23, a first timer count means 22, a duty setting means 23, a chopping signal generating means 24, a combining means 25 and a drive means 26. Therefore, if lock is generated for N times continuously, operation of the compressor 15 is stopped and is never started again to protect the circuit or compressor 15 from breakdown.

公开(公告)号：JPH08312538A

公开(公告)日：1996-11-26

申请号：JP11691095

申请日：1995-05-16

Applicant: MATSUSHITA REFRIGERATION

Inventor： TSUJII YASUHIRO ,  OGAWA KEIJI ,  HAMAOKA KOJI ,  SHIBUYA HIROMI ,  OGAWARA HIDEJI ,  KURIMOTO KAZUNORI

IPC: F04B49/06 ,  H02P27/06 ,  H02P7/63

Abstract: PURPOSE: To control waste power consumption by turning off a semi-conductor switch of an inverter circuit in a small load torque zone in a compressor wherein compression is made by the reciprocation of a piston. CONSTITUTION: An operation controlling device for a compressor is provided with a dc motor for activating a compressor 6, inverter circuit 5 turning on/off the voltage applied to the dc motor, position detecting means 7 for detecting a rotation position of the rotor of the dc motor, and energizing determining means 12 turning off the inverter circuit 5 by setting duty value to 0 in only the (n) zone in a suction process out of the N zone divided by the rotation pulse output by the position detecting means 7.

公开(公告)号：JPH08303926A

公开(公告)日：1996-11-22

申请号：JP11286895

申请日：1995-05-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： MORI SHIGERU ,  OGAWARA HIDEJI

IPC: F25D23/00 ,  F25D11/02 ,  H04Q9/00

Abstract: PURPOSE: To keep the cooling function of a refrigerator when the communication between a main control unit which controls the whole body of the refrigerator and a subsidiary control unit which controls a compressor becomes impossible. CONSTITUTION: When an I/F abnormality-detecting means B32 of a subsidiary control unit detects a communication abnormality, a compressor control means 31 can control the operation/stoppage of a compressor 17 by a timer 33. Also, when an I/F abnormality-detecting means A22 of a main control unit detects a communication abnormality, a display means 24 emits a warning to a user that an abnormality has happened by lighting up an LED 25.

公开(公告)号：JPH08289582A

公开(公告)日：1996-11-01

申请号：JP9067595

申请日：1995-04-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： ONISHI YASUTOMO ,  HAMAOKA KOJI ,  SHIBUYA HIROMI ,  OGAWARA HIDEJI ,  TSUJII YASUHIRO

IPC: H02P6/06

Abstract: PURPOSE: To enlarge the change width of output voltage without reducing motor efficiency by controlling the output voltage of a DC-DC converter and switching circuit with a signal to control the revolution of a motor, and putting the coil used in the DC-DC converter in common to one for use of power supply to each control part. CONSTITUTION: A revolution control means (Rc) 15 outputs control signals of frequency and output voltage for controlling the revolution of a motor 14. A RAM controller 16 controls the output voltage of a DC-DC converter (DC) 11 with the control signal of RC15. A PWM control means 17 controls a switching circuit 12 with the control signal of RC 15. A primary coil 18 is used for as a reactance inserted on the positive side between output terminals of a full wave rectification circuit 1. A transformer 19 uses the primary coil 18. Therefore, the amplitude of the pseudo sine waves and the frequency of pseudo sine waves of the switching circuit 12 can be varied with DC 11, so the change with of the output voltage can be enlarged without reducing motor efficiency.

公开(公告)号：JPH07298675A

公开(公告)日：1995-11-10

申请号：JP8454394

申请日：1994-04-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： SHIBUYA HIROMI ,  HAMAOKA KOJI ,  OGAWARA HIDEJI ,  HAYASHI HIDEO ,  TSUJII YASUHIRO

IPC: H02P6/12 ,  H02P6/06 ,  H02P6/08 ,  H02P6/18 ,  H02P6/182

Abstract: PURPOSE:To make it possible to detect the reverse rotation of a compressor due to erroneous wiring between an inverter circuit and a d.c. motor, and to stop and restart the compressor in the forward rotation. CONSTITUTION:A rotational direction detecting means A17 detects the forward/ reverse rotation of a rotary compressor 5 through compressor temperatuxre. If it is detected that the compressor 5 is operating in reverse due to erroneous wiring, the compressor 5 is stopped. Then a starting sequence control means 13 outputs commutation pulses, stored in a means 15 for storing starting sequence for correction, and chopping signals, and the compressor 5 is thereby restarted in the forward rotation.

公开(公告)号：JPH07260309A

公开(公告)日：1995-10-13

申请号：JP5028494

申请日：1994-03-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： SHIBUYA HIROMI ,  HAMAOKA KOJI ,  OGAWARA HIDEJI ,  HAYASHI HIDEO ,  TSUJII YASUHIRO

IPC: F25D11/00

Abstract: PURPOSE:To realize power saving for a refrigerator by controlling the number of revolutions of a fan motor for a compressor in response to the number of revolution of the compressor and further eliminating an operation of the motor for the compressor when a compressor temperature is low and air supply is not required even during operating of the compressor. CONSTITUTION:A compressor 7 and a fan motor 8 for the compressor are controlled for the number of revolutions according to an output voltage of a step-up type rectifier 10. When an atmospheric temperature detected by atmospheric temperature detecting means 20 is low and an input current of the compressor 7 detected by current detecting means 14 is small, it is not necessary to cool the compressor 7, and hence the motor 8 for the compressor is not operated even during operating of the compressor. Thus, unnecessary air supply to the compressor 7 can be eliminated.

公开(公告)号：JPH07145982A

公开(公告)日：1995-06-06

申请号：JP29516393

申请日：1993-11-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： TSUJII YASUHIRO ,  OGATA HIDEO ,  ONISHI YASUTOMO ,  OGAWARA HIDEJI ,  KUBOTA YOSHITAKA

IPC: F24F11/02

Abstract: PURPOSE:To suppress the uncomfortable feeling of a user to a minimum and to produce a power saving effect by a method wherein proper correction is applied on the calculated PMV value of a living area, in an air-conditioner to effect automatic control so that indoor environment is brought into a comfortable state by means of a PMV value. CONSTITUTION:An air-conditioner comprises an energy saving mode selection input means 17, a correction amount output means 18 to output a correction amount based on the input of the energy saving mode section input means 17, a PMV valve correcting means 19 to correct a PMV value, determined by a PMV value computing means 10, by means of a correction amount content decided by the correction amount output means 18, a receiving display means 20 to announce receipt of operation by the energy saving mode selection input means 17 to a user, and a cooling heating means 21 which is controlled so that a PMV value corrected by the PMV value correcting means 19 is stabilized in a range of a comfortable region. Thus, a power saving effect is produced in a range wherein an amenity of a user is not damaged.