公开(公告)号：JPH01212869A

公开(公告)日：1989-08-25

申请号：JP3818388

申请日：1988-02-19

Applicant: MATSUSHITA REFRIGERATION

Inventor： YONEDA HIROSHI ,  KINO AKIHIRO ,  YAMADA HIROYOSHI ,  HIROSE KENJI ,  OGAWA KEIJI ,  SHIBUYA HIROMI

IPC: F04B49/06 ,  F24F11/02 ,  F25B13/00

Abstract: PURPOSE:To improve control stability, energy savingness and reliability, by a method wherein a pressure detector is located in a piping (in an outdoor machine) running between an indoor machine and a 4-way valve, and based on a combination step of the frequency and the number of poles of an inverter, both being predetermined according to a detecting pressure, a capacity combination step is decided. CONSTITUTION:A pressure detector is located in a piping (in an outdoor machine) running between an indoor machine and a 4-way valve, and an operation capacity deciding means is provided for deciding a capacity combination step based on a combination step of the frequency and the number of poles of an inverted, both being predetermined according to a detecting pressure therefrom. A capacity combination step wherein a differential is produced between capacities before and after the starting and the stop of a pole varying type compressor or change of the number of poles when capacity is increased and capacity is decreased is provided. A differential is produced between total capacities of two compressors during the starting and the stop of the pole varying type compressor and change of the number of poles. This constitution causes control of capacity to always improve controllability according to an air conditioning load and a present operation state at a relatively low given interval and without frequent change of the number of poles.

公开(公告)号：JPH01202169A

公开(公告)日：1989-08-15

申请号：JP2707088

申请日：1988-02-08

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGAWA KEIJI ,  HIROSE KENJI ,  SHIBUYA HIROMI

IPC: H02M7/48 ,  H02P27/06

Abstract: PURPOSE:To suppress the vibration of a motor by switching a frequency among phases at the position of 0 degree of the phase of the output voltage of a main circuit transistor at the time of altering the frequency of the motor by a controller. CONSTITUTION:A transistor inverter is composed of a rectifying and smoothing circuit 1, a main circuit transistor group 2, a power source circuit 5, a frequency setter 6, a controller 7, a base driver 8, and further a phase detector 10. The controller 7 has a control circuit, a waveform switching unit and a ROM. The controller 7 controls the switching timing of the output frequency by a timing signal from the detector 10, and the output frequency is switched at the position of zero degree of the phase among the phases. As a result, the vibration or the like of a motor 4 can be suppressed to a minimum limit, and the frequency can be smoothly switched while suppressing the output current to a minimum.

公开(公告)号：JPS63163727A

公开(公告)日：1988-07-07

申请号：JP31231886

申请日：1986-12-26

Applicant: MATSUSHITA REFRIGERATION

Inventor： HIROSE KENJI ,  OGAWA KEIJI ,  SHIBUYA HIROMI

IPC: F24F11/02

Abstract: PURPOSE:To eliminate error in setting of a setting switch and other errors and make it possible to drive an electrically driven compressor with exact operation frequency by transmitting to an outdoor machine not only the state of ON/OFF of an indoor machine and the load to an air conditioner but also information about the capability of the indoor machine that is beforehand stored in a memory. CONSTITUTION:After judging whether or not a remote controller is ON by taking in the ON/OFF switch signal of an indoor machine, a set temperature A and indoor temperature B are taken in to calculate the temperature C=A-B. Next the horse power figure E' of the indoor machine is taken in, and signals of a remote controlled ON/OFF switch, temperature difference C, horse power figure E' of the indoor machine are sent to an outdoor machine 11'. Next, a rated frequency figure D per unit horse power is taken in and the product of D and E' is calculated to seek the operation frequency F at a standard temperature difference. The product of the temperature difference C and the F value is calculated to seek the operation frequency G of the indoor machine 1. After the same procedure is taken to seek the operation frequencies H and l of indoor machines 2 and 3, the operation frequency for all indoor machines, J=G+H+I is sought, and this is given to an inverter device 12. Thus, the inverter device 12 changes the speed of an electrically driven compressor to control its capability.

公开(公告)号：JPS6373885A

公开(公告)日：1988-04-04

申请号：JP21441786

申请日：1986-09-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： SHIBUYA HIROMI ,  OGAWA KEIJI ,  HIROSE KENJI ,  KITA TAKAHIRO

IPC: H02M7/5387

Abstract: PURPOSE:To prevent surge voltage, by providing a main circuit detection circuit and a reverse bias conversion circuit to apply reverse bias, etc., to a main circuit transistor when this transistor is turned OFF. CONSTITUTION:A drive circuit of a transistor inverter is composed of the second and third transistors 18 and 20 and a base drive signal circuit 24, while a main circuit current detection circuit 26 and a reverse bias conversion circuit 27 are provided. this reverse bias conversion circuit 27 controls the reverse bias amount between the base and emitter of a main circuit transistor 3 in turning OFF at the signal of the abovementioned current detection circuit 26. A capacitor 23 is provided, etc. side by side. Thus, the increase of turn-OFF time due to the shortage of reversebias amount can be suppressed and the occurrence of surge voltage caused by excess reverse bias amount prevented.

公开(公告)号：JPS6369468A

公开(公告)日：1988-03-29

申请号：JP20991186

申请日：1986-09-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： SHIBUYA HIROMI ,  HIROSE KENJI ,  OGAWA KEIJI ,  KITA TAKAHIRO

IPC: H02M7/48 ,  H02M7/537 ,  H02M7/5387

Abstract: PURPOSE:To improve a conversion efficiency, by a method wherein a resistance conversion circuit is installed to vary the value of base current controlling resistor according to a signal from a circuit detecting a main circuit current. CONSTITUTION:A base drive circuit of a transistor inverter to drive and control a main circuit transistor 3 is composed of second and third transistors 18, 20, a third resistor 24, a base drive signal circuit 25, a main circuit current detector 26, and a base current controlling resistance converter 27. The base current controlling resistance converter 27 is composed of a transistor and first-second base current controlling resistors. In this constitution, according to signal from the main circuit current detector 6, the base current controlling resistance converter 27 varies the resistance value and increases base current and enlarges the saturation region of the main circuit transistor 3. Voltage increase between collector and emitter is suppressed, thereby heat generation of the main circuit transistor 3 is suppressed.

公开(公告)号：JPS5915781A

公开(公告)日：1984-01-26

申请号：JP12642782

申请日：1982-07-19

Applicant: Matsushita Refrigeration

Inventor： OGAWA KEIJI

IPC: F25D11/00

公开(公告)号：JP2003185326A

公开(公告)日：2003-07-03

申请号：JP2001381321

申请日：2001-12-14

Applicant: MATSUSHITA ELECTRIC IND CO LTD ,  MATSUSHITA REFRIGERATION

Inventor： KAWAHARA TOYOKI ,  UCHIDA TOMOHIRO ,  HATTORI ATSUSHI ,  MURAMOTO EIICHI ,  NAKAMURA ATSUSHI ,  MATSUURA SATOSHI ,  OGAWA KEIJI

IPC: B65G1/137 ,  F25D23/00

Abstract: PROBLEM TO BE SOLVED: To provide a food storage capable of managing a storing position and a weight of the stored food in addition to the unique information on the stored food. SOLUTION: This food storage 100 comprises a tag sensor 208 for reading a non-contact tag 207 attached to the stored food 204 for storing the information on the food 204, a position detecting means 205 for detecting a position of the food 204, and a weight detecting means 206 for detecting a weight of the food 204, whereby not only the information on the stored food 204 can be obtained from the non-contact tag 207 storing the same, but also the storing position of the stored food 204 and the remaining amount of the stored food 204 can be recognized from the position detecting means 205 and the weight detecting means 206 to manage the same. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2001317860A

公开(公告)日：2001-11-16

申请号：JP2000135708

申请日：2000-05-09

Applicant: MATSUSHITA REFRIGERATION ,  MATSUSHITA ELECTRIC IND CO LTD

Inventor： OGAWA KEIJI ,  OKAMOTO SHINJI ,  TSUJII YASUHIRO ,  MAMEMOTO TOSHIAKI ,  OISHI HITOSHI ,  TAKAYAMA YOSHIKAZU ,  IRIMICHI TOMOAKI

IPC: F25D23/00

Abstract: PROBLEM TO BE SOLVED: To provide an inventory controller for refrigerators which can detect the residence time of foods and obtain the consumption time or quality maintaining time from the movement of the foods. SOLUTION: The inventory controller comprises racks for mounting foods, food detector having a touch panel provided at the top of the rack for detecting the existence of the food, time counter disposed on the touch panel for counting the residence time of the food, reset unit for resetting the time counter by detecting the movement of the food put on the food detector, and display for displaying the residence time of the food with the count provided by the time counter.

公开(公告)号：JP2000287459A

公开(公告)日：2000-10-13

申请号：JP8877999

申请日：1999-03-30

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGAWA KEIJI ,  HAMAOKA KOJI ,  NAKANO TOMONORI

IPC: F04B49/06 ,  F04B53/00 ,  H02M7/48

Abstract: PROBLEM TO BE SOLVED: To insulate a high-temperature of a compressor from a power controller by providing a relay terminal board which connects a power controller and the terminal board of the compressor, and also plays the role of insulating the surface temperature of the compressor. SOLUTION: In the case 5 of this apparatus, a power controller 3 and a relay terminal board 4 are housed, and the power controller 3 is directly connected to a compressor terminal board 2 through the board 4. If it is a plug-type one, it is composed of a plug which connects the board 4 to the compressor terminal board 2, a connector provided on the power controller 3, and a soft cable. Consequently, influence of the heat of the compressor at a high temperature on the power controller is removed.

公开(公告)号：JPH11103585A

公开(公告)日：1999-04-13

申请号：JP26320097

申请日：1997-09-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAMAOKA KOJI ,  OGAWA KEIJI ,  KUBOTA YOSHITAKA

IPC: H02P6/06 ,  H02P27/08 ,  H02P5/41

Abstract: PROBLEM TO BE SOLVED: To provide an inverter protector which can greatly downsize a circuit and reduce wasteful losses, and further can materialize energy saving. SOLUTION: The circuit can be greatly downsized, and further the loss by resistance can be removed, since the user is able to know the conditions of an AC power source, without providing an inverter device with a circuit for directly detecting voltage, by providing it with a rectifying circuit 2, an inverter 3, a brushless DC motor 5, a speed-detecting circuit 11 for detecting the rotational speed, a duty setting circuit 8 for adjusting the duty so that the rotational speed from the speed-detecting circuit 11 and the set speed conform with each other, a standard duty setting circuit 15 for setting the standard duty, according to the set speed, and a duty judging circuit 16 arranged so as to compare the present duty with the standard duty and stop the output of the inverter if it is outside a specified range.