公开(公告)号：JPH10285983A

公开(公告)日：1998-10-23

申请号：JP8912497

申请日：1997-04-08

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGAWARA HIDEJI ,  OGAWA KEIJI ,  HAMAOKA KOJI

IPC: H02P6/18 ,  H02P6/06 ,  H02P6/08 ,  H02P6/182 ,  H02P6/21

Abstract: PROBLEM TO BE SOLVED: To prevent step out during transition from the synchronous operation mode to the position detecting operation mode, by checking whether the pattern of a rotor position detection signal is normal, and, if the pattern is not normal, sustaining the forced commutating motion mode until a normal rotor position detection signal is inputted corresponding to a commutation signal. SOLUTION: Rotor position detection signals 6X-6Z are taken into a commutation signal generating means 9, and logical operation is performed to generate commutation signals 9U+-9W-. The transistors in a semiconductor switching element group 2 are switched by these commutation signals, and rotational torque is continuously produced in a brushless motor 3. When the brushless motor 3 is at rest, meanwhile, induced voltage is not produced in an armature winding 4. For the reason, at start-up, the controller is placed in the synchronous operation mode and commutation signals 9U+-W- are supplied at low frequency to forcedly rotate the brushless motor 3. Induced voltage is produced in the armature winding 4 due to this rotation, and the induced voltage is converted to obtain the rotor position detection signals 6X-6Z.

公开(公告)号：JPH10220882A

公开(公告)日：1998-08-21

申请号：JP2117397

申请日：1997-02-04

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F25B1/00

Abstract: PROBLEM TO BE SOLVED: To enable an influence of failure of energization in the case that a load torque is high to be reduced by a method wherein a load torque of a DC electric motor at the time of energization is detected by a torque-up means in reference to a temperature at an upper part of a cooler device and the energization is carried out in response to an energization sequence pattern corresponding to the load torque from the beginning in operation. SOLUTION: When a refrigerator 30 is energized, an energization sequence control means 13 and a synthesizing means 21 are connected by an operation mode changing-over means 20, an energization sequence pattern A stored in an energization sequence pattern memory means 14 is outputted to the energization sequence control means 13 from the torque-up means 18 and then a compressor 5 is operated under an energization sequence pattern showing the most lowest output torque. Then, it is judged by a lock sensing means 17 whether or not the compressor 5 is locked and in the case that the locked state is found, the energization sequence pattern B stored in the memory means 15 is outputted to the energization sequence control means 13 by the torque-up means 18 and then the compressor 5 is operated under an energization sequence pattern having a larger output torque.

公开(公告)号：JPH10205952A

公开(公告)日：1998-08-04

申请号：JP1216597

申请日：1997-01-27

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F25D11/00 ,  F25B1/00

Abstract: PROBLEM TO BE SOLVED: To avoid the starting of a refrigerator under a condition that a load torque is big by a method wherein the refrigerator is equipped with a pressure condition deciding means, driving the compressor by the pressure condition of a refrigerating cycle, and a compressor start waiting time determining means, determining a period of time until the stabilized pressure of the refrigerating cycle is achieved. SOLUTION: When a power supply is turned on the temperature T1 of an evaporator 4 for a refrigerating cycle 2 is detected by an evaporator temperature sensor 15 to input it into a pressure condition deciding means 16 and compare the operation of change of the temperature T1 per time. When it is equal, the pressure condition of the refrigerating cycle 2 is judged that it is stabilized and a compressor 5 is driven, however, when a pressure difference is big and the pressure condition is unstable, the ambient temperature T2 of a refrigerator is detected by an ambient temperature sensor 17, a period of time until the condition of high and low pressure of the refrigerating cycle becomes stable at the temperature T2 is determined by a start waiting time determining means 18 and the operation mode of the compressor is changed into a mode, in which the compressor 5 is not started. During this period, a waiting time lamp 20 is lighted by a timer count means 19 and the stabilized driving of the compressor is effected by a motor controller 7 for compressor after finishing the waiting time while these operations are repeated thereafter.

公开(公告)号：JPH09163784A

公开(公告)日：1997-06-20

申请号：JP31418395

申请日：1995-12-01

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGAWARA HIDEJI ,  OGAWA KEIJI ,  HAMAOKA KOJI

IPC: H02M7/48 ,  H02P6/06 ,  H02P6/10

Abstract: PROBLEM TO BE SOLVED: To reduce current leakage for restraining electric shock in an inverter which drives an d.c. motor. SOLUTION: This inverter is operated with a plurality of ON duties combined within one turn of an d.c. motor 4, and is capable of being controlled so that the average of a plurality of ON duties may be a desired ON duty value. This inverter is also provided with a duty operating device 12 which makes classification into a plurality of types of duty ratios so that the average may be equal to the desired duty value without ON duty ratios being used within a range of 40% to 60%, thus it is possible to reduce current leakage.

公开(公告)号：JPH08285432A

公开(公告)日：1996-11-01

申请号：JP9066995

申请日：1995-04-17

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F25D11/02 ,  F25D21/08

Abstract: PURPOSE: To retain a cooling function of a refrigerator even in the case where communications between a main controlling unit for controlling the whole refrigerator and a sub-controlling unit for controlling a compressor have become defective in the refrigerator for cooling and storing foodstuffs. CONSTITUTION: A controller for a refrigerator comprises an I/F abnormality detecting means for detecting the abnormality of communications, a compressor operation condition determining means 66 for detecting indirectly the operational. condition of a compressor, a compressor controlling means 42, a timer 82 for starting/stopping the operation of the compressor and an integrating counter 71 for integrating an operation time. When communications are abnormal, in-chamber temperatures are controlled, the compressor is cooled and an evaporator 13 is defrosted.

公开(公告)号：JPH07264889A

公开(公告)日：1995-10-13

申请号：JP5028294

申请日：1994-03-22

Applicant: MATSUSHITA REFRIGERATION

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

IPC: H02P6/06

Abstract: PURPOSE:To provide a controller for power source circuit which can improve the efficiency of a DC motor and can reduce the switching loss of an inverter section. CONSTITUTION:A controller for power source circuit is constituted of a rectifier circuit 1, DC-DC converter 11 which boosts a rectified DC voltage, boosting circuit 17 which improves the power factor on a power source circuit by controlling the output voltage of the converter 11, DC brushless motor 13 which is driven by the output of the inverter 12, and rotating speed controlling means 14 which controls the rotating speed of the motor 13 and boosting circuit 17.

公开(公告)号：JPH07174385A

公开(公告)日：1995-07-14

申请号：JP31965493

申请日：1993-12-20

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F24F11/02

Abstract: PURPOSE:To improve the accuracy of input factors themselves inexpensively as well as the accuracy of a PMV value obtained in a living space through a PMV operating means by a method wherein a humidity or an input value employed upon operating PMV is estimated in an air-conditioning machine, controlling indoor atmosphere automatically so as to become comfortable in the value of PMV. CONSTITUTION:An air-conditioning machine is provided with a PMV value operating means 1, obtaining the values of PMV sequentially through operation, an indoor temperature detecting means 2, detecting a room temperature, a humidity reasoning means 3, an initial humidity setting means 4, a radiation temperature detecting means 5, an air speed setting means 6, an amount of activity setting means 7, an amount of clothes setting means 8, a cooling and heating means 17 and a cooling and heating control means 18.

公开(公告)号：JPH0783480A

公开(公告)日：1995-03-28

申请号：JP22856793

申请日：1993-09-14

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F24F11/02

Abstract: PURPOSE:To enable control of an indoor environment to be comfortable to a dweller by controlling a cooling-heating means so that PMV (average preestimated declared feeling of warmth and coolness) value be made stable within a comfortable area and a temperature within a set area. CONSTITUTION:When it is assumed that the quantity of air is set 'large' the amount of activity 'small' and the amount of clothing 'winter wear' and that a PMV value determined by a PMV value computing means 1 is -1.5 in these conditions, for instance, the PMV value deviates onto the negative side from a comfortable state in these conditions, and therefore a cooling-heating means 9 executes a heating operation, whereby the PMV value becomes large gradually and approaches the comfortable area. On the occasion, a comfortableness sign 11 is extinguished. When the PMV value enters the comfortable area, the comfortableness sign 11 is lighted, the cooling-heating means 9 repeats an operation/ stop and the PMV value becomes stable at neutral. In the meantime, a user can correct the PMV value by a warmth feeling input means 8 and a warmth feeling monitor 20. According to this constitution, an indoor environment can be controlled to be comfortable to a dweller.

公开(公告)号：JPH0763393A

公开(公告)日：1995-03-07

申请号：JP21165893

申请日：1993-08-26

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F24F11/02

Abstract: PURPOSE:To eliminate large loss of comfortableness even if a user inputs for an excess temperature feel by inputting a PMV (predicted mean hot or cold feeling report) value after being corrected and a control target value, and so controlling cooling and heating means that the PMV value is stabilized at a control target value. CONSTITUTION:When a user feels discomfort due to his favorite, operating amount change, etc., for a PMV value obtained by PMV value calculating means 1, an optimum temperature feeling input is input by temperature feel input means 8. Temperature feel input memory means 11 stores a temperature feeling input value with relation with a cause such as a room temperature, an atmospheric temperature at that time, and the PMV value obtained by the means 1 is corrected by PMV value correcting means 12 in response to an input of the means 8. Simultaneously, when similar environmental conditions are obtained at the time of next operation, the PMV value is automatically corrected in response to the input stored in the means 11, and the corrected PMV value is so limited by PMV value correction control means 12 as not to exceed it at a predetermined range. Accordingly, even if excess temperature feed input is erroneously input, comfortableness is not largely impaired.

公开(公告)号：JPH074715A

公开(公告)日：1995-01-10

申请号：JP14461693

申请日：1993-06-16

Applicant: MATSUSHITA REFRIGERATION

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

IPC: F24F11/02

Abstract: PURPOSE:To provide an air conditioner which, without the need of the user's troublesome control, can be controlled in a manner of having the indoor PMV value at the neutrality in accordance with the season. CONSTITUTION:There are provided a cooling/heating means 11 for indoor cooling or heating, a room temperature detecting means 2 to detect the room temperature, an outdoor temperature detecting means 8 to detect the outdoor temperature, a means of storing the previous operation hysteresis 7 for storing detection information at the time of previous operation, a season-judging means 6 for inferring the season of the operation from the room temperature of the living space, outdoor temperature, and previous operation for calculating the PMV value of the living space in accordance with the season, and a means of controlling the PMV cooling/heating 10 for controlling the cooling/heating means 11 in a manner of having the PMV value of the living space at the neutrality. As a result, without being restricted as regards the location of installation of detective means and without the need of troublesome control and for an inexpensive constitution an air conditioner can be controlled in a manner of having the PMV value at the neutrality in accordance with the season in which it is operated.