公开(公告)号：JP2000220932A

公开(公告)日：2000-08-08

申请号：JP2184499

申请日：1999-01-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGATA HIDEO ,  OUCHIYAMA TOMONORI ,  ARAKAWA TOSHIKAZU

IPC: F25D11/00 ,  F25B21/02

Abstract: PROBLEM TO BE SOLVED: To provide a wine cellar in which a specified temperature level can be sustained with a small temperature difference while suppressing vibration. SOLUTION: A thermoelectric wine cellar comprises a power supply 13 for supplying a thermoelectric element 5 with a driving voltage, an inner temperature detector 10, an outer air temperature detector 11, an inner temperature setter 12, and a controller 16. Driving voltage of the thermoelectric element 5 is preset for each set temperature depending on the outer air temperature, high and low level temperatures are set around the set temperature, the driving voltage is elevated by a predetermined level when the inner temperature exceeds the high level and further elevated by a predetermined level every time when the high level is exceeded for a predetermined time. On the contrally, the driving voltage is lowered by a predetermined level when the inner temperature drops below the low level and further lowered by a predetermined level every time when the inner temperature drops below the low level for a predetermined time thus preserving wine under good conditions where the temperature difference is suppressed.

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：JPH10191651A

公开(公告)日：1998-07-21

申请号：JP34300196

申请日：1996-12-24

Applicant: MATSUSHITA REFRIGERATION

Inventor： YOSHIDA IZUMI ,  OGATA HIDEO ,  ARIKI MASATO

IPC: H02M7/48 ,  H02M7/537

Abstract: PROBLEM TO BE SOLVED: To control the dead time correction to prevent in advance the case where hunting is induced by errors, etc., when the dead time correction of an inverter to be mounted on an air conditioner is performed by detecting the current of only one phase. SOLUTION: A dead time correction control device comprises an inverter 1 to convert the DC to the AC of variable frequency, a compressor 2 to be driven by the inverter 1, a motor current detection part 3 to detect the current flowing in a motor build in the compressor 2, a zero-cross phase detection part 4 to detect the mean value of the phase of the zero-cross of the motor current from the output of the motor current detection part 3, and a waveform operating part 6 which operates the PWM waveform taking into consideration the dead time correction from the output of the zero-cross phase detection part 4, the output frequency command value, and the dead time correction set value, and drives the inverter 1. Induction and expansion of the hunting can be effectively prevented in advance by using the mean value of the zero- cross phase to the value of the zero-cross phase of the motor current to correct the dead time.

公开(公告)号：JPH10131859A

公开(公告)日：1998-05-19

申请号：JP28486096

申请日：1996-10-28

Applicant: MATSUSHITA REFRIGERATION

Inventor： YOSHIDA IZUMI ,  OGATA HIDEO

IPC: F04B39/00 ,  F24F11/02 ,  H02P27/06 ,  H02P7/63

Abstract: PROBLEM TO BE SOLVED: To reduce vibration generated during operation of a compressor mounted on an air conditioner. SOLUTION: A vibration reducing device is provided with a power converter 5 for converting DC voltage from a DC power part 4 into AC power of variable frequency, an induction motor 1 of an air conditioner controlled in rotating speed by the power converter 5, a voltage fluctuation detecting part 6 for converting the change of energy, exchanged between the DC power part 4 and the power converter 5, into voltage change, a voltage fluctuation portion detecting part 10 taking out only an alternating component of the voltage fluctuation detecting part 6 and comparing it with average voltage to output pulse corresponding to a large part and a small part, and a waveform computing part 15 increasing or decreasing the basic frequency command value if necessary according to the length of pulse outputted from the voltage fluctuation portion detecting part 10 and its timing and outputting the output value to the power converter 5. Vibration of a compressor during operation in the air conditioner can thereby be reduced.

公开(公告)号：JPH1023765A

公开(公告)日：1998-01-23

申请号：JP17607596

申请日：1996-07-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGATA HIDEO ,  YOSHIDA IZUMI ,  WATAKABE SHUSAKU

IPC: H02M7/48 ,  H02M7/537 ,  H02P27/08 ,  H02P7/63

Abstract: PROBLEM TO BE SOLVED: To eliminate the occurrence of output current distortion caused by on-delay time, by computing a PWM waveform taking on-delay compensation into consideration from the output signal of an on-delay compensation timing computing section and outputting the computed waveform to a power inverter. SOLUTION: A frequency analyzer section 6 detects a frequency component which is twice or odd number times as high as an operation command frequency and an on-delay compensation timing computing section 7 changes the on-delay compensation timing with the zero-crossing point as the center, so that the frequency component can become the minimum after the change directions of the detecting levels of both frequency components are confirmed. Then, a waveform computing section 8 drives an induction motor with a PWM waveform, taking the on-delay compensation timing into consideration. Therefore, a stable, smooth, and highly efficient voltage PWM inverter which is not affected by impair, such as the noise, etc., and less in current distortion is obtained.

公开(公告)号：JPH09113038A

公开(公告)日：1997-05-02

申请号：JP26672895

申请日：1995-10-16

Applicant: MATSUSHITA REFRIGERATION ,  MATSUSHITA ELECTRIC IND CO LTD

Inventor： OGATA HIDEO ,  YOSHIDA IZUMI ,  WATAKABE SHUSAKU ,  TSUCHIYAMA YOSHIRO ,  MATSUI KEIZO ,  ITO YOSHITERU ,  YOSHIOKA KANEHARU

IPC: F25B1/00

Abstract: PROBLEM TO BE SOLVED: To provide an inverter controller for air conditioning having high efficiency by holding the dissipation power or motor current minimum without varying the number of revolutions of an air conditioning compressor. SOLUTION: The inverter controller for an air conditioner comporises outlet pressure detecting means 13 of a compressor, means 15 for frequency- discriminating the change component of the detected pressure, command frequency control means 19 for so controlling the driving frequency as to coincide with the frequency to become a target value by compensating the slip of a compressor motor 1 based on the discriminated frequency, motor current detecting means 3 and DC unit current detecting means 15 for the inverter. Command voltage control means 20 including the minimizing control means 11 for so retrieving the command voltage that the DC unit current value becomes minimum if the motor current is the preset limit current value or less is provided to attempt to minimize the power. The power minimizing control is switched to the current minimizing control as required to provide the operation which makes it possible to operate to the capacity of the maximum limit with high efficiency.

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.