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公开(公告)号：JPH08313135A
公开(公告)日：1996-11-29
申请号：JP11552595
申请日：1995-05-15
Applicant: MATSUSHITA REFRIGERATION
Inventor： NODA TOSHINORI , ONISHI YASUTOMO , YAMAMOTO HARUYOSHI , HAMANO YASUKI , KANEOKA SHINICHI , MORISHITA KENICHI , KUBOTA YOSHITAKA
Abstract: PURPOSE: To obtain energy saving effect by stopping the operation of an oil cooler when the temperature of a compressor is low. CONSTITUTION: The delivery route 2 of refrigerant from a compressor 1 is branched into first and second delivery routes 15, 16 while the first delivery route 15 is connected to an oil cooler 6 and the oil cooler 6 is connected to a main condenser 7. The second delivery route 16 is connected to the main condenser 7 through a bypass valve without passing through the oil cooler 6. A compressor oil temperature detecting means 11 is provided and when the temperature of the compressor 1 becomes low, the discharged refrigerant from the compressor 1 is sent to the main condenser 7 through the bypass valve without passing through the oil cooler 6 by opening the bypass valve whereby the excessive reduction in the temperature of the compressor 1 is prevented and energy saving effect can be obtained.
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公开(公告)号：JPH08296945A
公开(公告)日：1996-11-12
申请号：JP9830795
申请日：1995-04-24
Applicant: MATSUSHITA REFRIGERATION
Inventor： KUBOTA YOSHITAKA , NODA TOSHINORI , ONISHI YASUTOMO , YAMAMOTO HARUYOSHI , HAMANO YASUKI , KANEOKA SHINICHI , MORISHITA KENICHI
Abstract: PURPOSE: To prevent a heat exchanging characteristic of a condenser arranged at a main body of a refrigerator from being deteriorated. CONSTITUTION: This refrigerator is provided with a condenser 1 wherein one straight pipe comprising a thermal radiation plate 20 thermally contacted with a metallic pipe 19 is bent a plurality of times on the same plane, and the pipe is installed at a mounting plate 7 forming a machine chamber 3 defined at a lower rear part of a main body 2 of the refrigerator such that the thermal radiation plate 20 and the mounting plate 7 may become substantially perpendicular to each other.
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公开(公告)号：JPH08285424A
公开(公告)日：1996-11-01
申请号：JP9332395
申请日：1995-04-19
Applicant: MATSUSHITA REFRIGERATION
Inventor： KANEOKA SHINICHI , NODA TOSHINORI , YAMAMOTO HARUYOSHI , HAMANO YASUKI , MORISHITA KENICHI , ONISHI YASUTOMO , KUBOTA YOSHITAKA
Abstract: PURPOSE: To prevent refrigerant from being decomposed under an abnormal high temperature of the refrigerant and to perform a forced convection cooling of a compressor by a method wherein when a temperature of discharged gas is detected and this detected gas temperature keeps an abnormal temperature of the discharged gas for a specified period of time, the compressor is stopped in its operation and a blower is electrically energized and driven subsequently even after the compressor is stopped in its operation. CONSTITUTION: If a temperature of a discharging pipe of a compressor is increased and a temperature detected by a discharged gas sensing means 6 keeps a higher temperature than an abnormal temperature of the discharged gas for a specified period of time, for example, 5 seconds, the operation is transferred to a discharged gas abnormal mode. Then, a compressor 1 is turned off by a relay 11 and is stopped in its operation for a predetermined period of time. However, a fan motor 4 is electrically energized and driven as it is after elapsing a specified period of time. Then, after elapsing a specified period of time, the relay 11 is turned on by a control circuit 13, the compressor 1 is again electrically energized and driven to start a cooling operation. At this time, the fan motor 4 is subsequently electrically energized and driven. With such an arrangement as above, a recovering of the compressor 1 is rapidly carried out, an inner side of a refrigerator is cooled again to enable a foodstuff in the refrigerator to be prevented from being decayed.
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公开(公告)号：JPH08261995A
公开(公告)日：1996-10-11
申请号：JP6615795
申请日：1995-03-24
Applicant: MATSUSHITA REFRIGERATION
Inventor： UMEOKA IKUTOMO , KAMITSUJI TOSHIO , HAMANO YASUKI , MORISHITA KENICHI
Abstract: PURPOSE: To accurately quantify the damage degree of a slide section without disassembling a machine by detecting the vibration wave-form generated from the slide section, removing noises from a voltage signal, converting the voltage signal into a digital signal, then wave-form-processing the feature of the signal. CONSTITUTION: The vibration component generated from the slide section of a rotary machine such as a compressor 1 used for a refrigerating device is detected by a sensor 3 installed at one position of a four-point weld section 2, converted into the voltage signal, amplified, and recorded in a wave-form recording device 5. The noise component is removed from the voltage signal by a BPF 6, and the voltage signal is converted 7 into the digital signal and inputted to a wave-form processor 8. The amplitude size and fluctuation degree of a shock wave indicating the damage degree of the slide section are quantified by DSP in the wave-form processor 8, the damage degree of each slide section is judged based on the data base showing the correspondence between the calculated result and damage degree, and the judged result is displayed 9 and recorded 10. The damage degree of the machine slide section can be quantitatively grasped while the compressor 1 is not disassembled.
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公开(公告)号：JPH08247076A
公开(公告)日：1996-09-24
申请号：JP5431195
申请日：1995-03-14
Applicant: MATSUSHITA REFRIGERATION
Inventor： UMEOKA IKUTOMO , MORISHITA KENICHI
Abstract: PURPOSE: To provide a performance degradation diagnosing device of a compressor to judge a performance degradation degree of the compressor in accordance with an oscillatory waveform of the compressor and to efficiently and precisely judge compression performance, especially refrigerating capacity by determining an unsteady component with fluid oscillation of the compressor as its exciting source. CONSTITUTION: This device is constituted by furnishing a sensor 4, an amplifier 5, a waveform recorder 6, a filter 7, an A/D converter 8, a waveform processor 9, an indicator 10, a recorder 11 and a quantifying means of an unsteady component of an oscillatory waveform in the waveform processor 9.
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Patent Agency Ranking
公开(公告)号：JPH10318154A
公开(公告)日：1998-12-02
申请号：JP13077197
申请日：1997-05-21
Applicant: MATSUSHITA REFRIGERATION
Inventor： MORISHITA KENICHI , KAMITSUJI TOSHIO
IPC: F04B49/06 , F16K31/04 , F16K31/524
Abstract: PROBLEM TO BE SOLVED: To reduce starting torque, by always opening a delivery valve during the starting of a compressor and stopping the delivery valve from being always opened at a set time. SOLUTION: A top 20a of a cam 20 which is connected with a motor through a shaft 21, when the top 20a is positioned on a delivery lead 7 side, presses the delivery lead 7 onto the side opposite to a piston 3 to open the delivery lead 7, and a delivery valve 5 is always closed. When its bottom point 20b is positioned on the delivery lead 7 side, the bottom point 20b separates from the delivery lead 7 to close the lead 7, and the delivery valve 5 is turned to the normal condition. A timer carries a current to a motor by instruction from a compressor starting/detecting means, and the motor stops by rotating a cam 22 to position the top 20a to the delivery lead 7 side. After the set time reaches that close to time when the compressor arrives at steady rotational frequency after its starting, the timer carries the current to the motor again, and the motor stops by rotating a cam 22 to position the bottom point 20b to the delivery lead 7 side.
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公开(公告)号：JPH09113087A
公开(公告)日：1997-05-02
申请号：JP27268395
申请日：1995-10-20
Applicant: MATSUSHITA REFRIGERATION
Inventor： MORISHITA KENICHI , ODA MASATAKA , KURIMOTO KAZUNORI , HAMANO YASUKI , NODA TOSHINORI , KUBOTA YOSHITAKA , ENDO KATSUMI , KANEOKA SHINICHI , KAMITSUJI TOSHIO
Abstract: PROBLEM TO BE SOLVED: To reduce the thermal load of a compressor by so controlling to vary the number of revolutions of a fan motor for cooling the compressor when the temperature of a discharge tube rises. SOLUTION: The indoor temperature input to control means 12 is compared with a set temperature, and the number of revolutions of a fan motor for cooling a compressor is decided. Then, the output of discharge tube temperature detecting means 11 is input by the input terminal 15 of the control means 12. Whether the discharge tube temperature is a predetermined value or not is judged, and if it is the predetermined value or more, the number of revolutions of the motor for cooling the compressor is altered, while if it is less than the predetermined value, the alteration of the number of revolutions of the motor for cooling the compressor is released. Then, the decided number of revolutions of the motor for cooling the compressor is output, and then whether the defrosting operation is started or not is judged. If the defrosting operation is started, the output of a compressor rotation command from the output terminal 01 is set to '0' rotation, and the rotation command of the motor for cooling the compressor from the output terminal 01 is set to '0' rotation. A relay 8 is turned ON to supply a current to a heater 9.
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公开(公告)号：JPH0979699A
公开(公告)日：1997-03-28
申请号：JP23946795
申请日：1995-09-19
Applicant: MATSUSHITA REFRIGERATION
Inventor： UMEOKA IKUTOMO , MORISHITA KENICHI
Abstract: PROBLEM TO BE SOLVED: To suppress piping resonance sounds generated when a muffler for use in a cooling system for refrigerators and the like is provided, thereby effectively reducing noises generated from a refrigerator. SOLUTION: Both ends of a muffler 6 are reduced in diameter to be made substantially conical-shaped to form pipe connections 17, an inlet bent pipe portion 15a is provided on a cooling medium inlet pipe 15 of the muffler 6 for a cooling system, and an outlet bent pipe portion 16a is provided on a cooling medium outlet pipe 16, so that a cooling system is obtained, in which an increase in noises caused by piping resonance is suppressed.
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公开(公告)号：JPH08285426A
公开(公告)日：1996-11-01
申请号：JP8813195
申请日：1995-04-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： MORISHITA KENICHI , NODA TOSHINORI , ONISHI YASUTOMO , YAMAMOTO HARUYOSHI , HAMANO YASUKI , KANEOKA SHINICHI , KUBOTA YOSHITAKA
Abstract: PURPOSE: To reduce a consumption power of a refrigerator by a method wherein a flow rate of refrigerant is adjusted in such a way that a requisite minimum flow rate of refrigerant required for preventing dew formation may be flowed so as not, to provide heating more than that required for a condenser to prevent dew formation of a refrigerator. CONSTITUTION: This refrigerator is comprised of a bypass pipe 6 for bypassing a dew formation preventing condenser 2b, a pressure sensing device for sensing a pressure within the dew formation preventing condenser 2b and a refrigerant flow rate distributing device 7 for distributing a flow rate of refrigerant flowing in the bypass pipe 6 in response to an output of the pressure sensing device.
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公开(公告)号：JPH08247077A
公开(公告)日：1996-09-24
申请号：JP5431795
申请日：1995-03-14
Applicant: MATSUSHITA REFRIGERATION
Inventor： MORISHITA KENICHI , UMEOKA IKUTOMO
Abstract: PURPOSE: To judge a fluid compression component and a metallic contact component by providing a judgement part to carry out frequency separation in addition to a conventional hydraulic compression diagnostic device concerning a diagnostic device to judge the hydraulic compression component and the metallic contact component from an oscillation signal peak waveform caused by hydraulic compression of a compressor. CONSTITUTION: Oscillation of a compressor 1 is detected by a sensor 2 constituted of a piezoelectric element, amplified by an amplifier 3, taken off of a waveform by a trigger device 4, separated in frequency by a frequency separation device 5, detected in envelope by an envelope detection device 6, converted in A/D by an A/D converter 7, judged in hydraulic compression component and metallic contact component by a judgement part, output by an output device 9 and recorded by a recorder 10.
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