公开(公告)号：JPH08285438A

公开(公告)日：1996-11-01

申请号：JP9067395

申请日：1995-04-17

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAMANO YASUKI ,  NODA TOSHINORI ,  ONISHI YASUTOMO ,  YAMAMOTO HARUYOSHI ,  MORISHITA KENICHI ,  KANEOKA SHINICHI ,  KUBOTA YOSHITAKA

IPC: F25D19/00 ,  F25D23/00 ,  F25D23/10

Abstract: PURPOSE: To prevent the short-circuit of air convection and secure the high heat-exchanging characteristics of a condenser. CONSTITUTION: A machine chamber 2 is divided by an outer case bottom plate and a mounting plate at a lower rear portion of a refrigerator main body 1, and an aft air inlet port 8a and air outlet ports 8b are provided through a cover 8 of the machine chamber 2. A shielding plate 15, which is suspended to a floor face in a widthwise direction of the refrigerator main body 1 from the end of the mounting plate on the side of the air outlet ports 8b to the end of a fore air inlet port 9, is provided on the mounting plate side at the abutment part of the outer case bottom plate against the mounting plate, while a member, which is suspended to the floor face from the forward and backward direction of the mounting plate on the upstream side of the air outlet ports 8b and which abuts against the shielding plate 15, is provided on the mounting plate.

公开(公告)号：JPH08189751A

公开(公告)日：1996-07-23

申请号：JP420395

申请日：1995-01-13

Applicant: MATSUSHITA REFRIGERATION

Inventor： SHIMOMURA NOBUO ,  NODA TOSHINORI ,  HAMANO YASUKI ,  KANEOKA SHINICHI ,  KUBOTA YOSHITAKA

IPC: F25D19/00 ,  F25B39/04 ,  F25D11/00 ,  F25D23/00

Abstract: PURPOSE: To improve the heat-exchanging property of a condenser which is provided in a refrigerator main body. CONSTITUTION: At a lower rear part of a refrigerator main body 1, a machine chamber 2 is partitioned with an external box bottom plate 3, mounting plate and machine chamber cover 8. On the mounting plate, a condenser 4, blower 5 which is arranged on the upstream side of the condenser 4, compressor 6 and evaporation tray are provided. Then, on the machine chamber cover 8, an air discharging port 11 and rear side air inlet 10 are provided, and a front side air inlet 9 is provided on the tilted surface part of the external box bottom plate 3. Then, an excitation means 19 is provided on the condenser 4, and the condenser 4 is shaken by the excitation means 19.

公开(公告)号：JPH08128398A

公开(公告)日：1996-05-21

申请号：JP26866894

申请日：1994-11-01

Applicant: MATSUSHITA REFRIGERATION

Inventor： MORISHITA KENICHI ,  KAMITSUJI TOSHIO ,  UMEOKA IKUTOMO ,  HAMANO YASUKI

IPC: F04C28/28 ,  G01N29/14 ,  F04C29/10

Abstract: PURPOSE: To enable the liquid compression diagnosis of a compressor without needing any prototype by envelope detection of a piezo-electric signal from a piezo-electric element mounted on the external appearance part of the compressor. CONSTITUTION: A sensor 2 consisting of a piezo-electric element mounted on a compressor 1 detects a signal caused by the liquid compression of the compressor 1, and the detected signal is subjected to envelope detection by an envelope detection apparatus 3 and indicated on an output apparatus 4. Then, the outputted signal has the same wave form as the actual pressure waveform in timing and form of the peak waveform. Thus, a liquid compression phenomenon can be judged from a threshold line corresponding to the highest pressure line in the normal running and the liquid compression can be confirmed when a peak value of the signal peak waveform exceeds the threshold line.

公开(公告)号：JP2001349658A

公开(公告)日：2001-12-21

申请号：JP2000167274

申请日：2000-06-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAITO TETSUYA ,  HAMANO YASUKI

IPC: F25D19/00 ,  F25D11/02 ,  F25D21/04

Abstract: PROBLEM TO BE SOLVED: To reliably remove frost adhered to an electric motor operated valve and to prevent drying of foods in a refrigerating chamber. SOLUTION: By installing an electronic expansion valve 23 in a freezing chamber 14, since the freezing chamber 14 is lower in humidity compared with a refrigerating chamber 13, an amount of frost adhered to an electronic expansion valve 23 can be suppressed and, during defrosting, frost adhered to the electronic expansion valve 23 can be reliably removed. Further, since moisture in the refrigerating chamber 13 forms frost which is adhered to the electronic expansion valve 23 and not removed, the interior of the refrigerating chamber 13 can be kept in high humidity and drying of foods can be suppressed.

公开(公告)号：JP2000346526A

公开(公告)日：2000-12-15

申请号：JP16329699

申请日：1999-06-10

Applicant: MATSUSHITA REFRIGERATION

Inventor： SAITO TETSUYA ,  KIMURA YOSHITO ,  HAMANO YASUKI ,  SHIMOMURA NOBUO

IPC: F25D11/02 ,  F25B1/00 ,  F25B5/02

Abstract: PROBLEM TO BE SOLVED: To reduce the amount of refrigerant in a cooling system and improve its efficiency by opening a channel of a first channel control means after closing first and second channel control valves for a predetermined period of time when the refrigerant flow is switched so that the refrigerant flows into a first evaporator. SOLUTION: A compressor 1, a condenser 2, and a first motor-operated valve 10 and a second motor-operated valve 11 serving as channel control means, are disposed in a machine house 15 in order to reduce connecting portions of piping in a refrigerator box 20. When refrigerant flow is switched from a freezer compartment 6 cooling state in which the valve 10 is closed and the refrigerant is flowed into a second evaporator 5 which opens the valve 11, to a cold storage compartment 4 cooling state in which the valve 10 is opened and the refrigerant is flowed into a first evaporator 3 which closes the valve 11, the valve 10 and the valve 11 are closed for a predetermined period of time, and thereafter the valve 11 is opened to operate the compressor 1.

公开(公告)号：JP2000121178A

公开(公告)日：2000-04-28

申请号：JP29350698

申请日：1998-10-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： KIMURA YOSHITO ,  SHIMOMURA NOBUO ,  HAMANO YASUKI ,  SAITO TETSUYA

IPC: F25D11/02 ,  F25B1/00 ,  F25B5/02

Abstract: PROBLEM TO BE SOLVED: To reduce a refrigerant amount and to enhance safety at the time of using by connecting a second pressure reducing means and a second evaporator parallelly to a first pressure reducing means and a first evaporator, arranging a channel control means at inlet sides of the first and second pressure reducing means, and sealing a combustible refrigerant as a refrigerant. SOLUTION: A closed loop is formed of a low pressure container type capability variable compressor 12, a condenser 2, a capillary 7 of a first pressure reducing means and a first evaporator 3. Simultaneously, a capillary 8 of a second pressure reducing means and a second evaporator 5 are connected parallelly to the capillary 7 and the evaporator 3. A motor driven three-way valve 13 of a channel control means is provided at inlet sides of the capillaries 7, 8. As a refrigerant, for example, a combustible refrigerant of HC refrigerant (propane, isobutane) is sealed. Thus, a piping capacity of a cooling system can be reduced, and a refrigerant amount can be decreased.

公开(公告)号：JPH10300323A

公开(公告)日：1998-11-13

申请号：JP10559697

申请日：1997-04-23

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAMANO YASUKI ,  NODA TOSHINORI ,  KANEOKA SHINICHI

IPC: F25D23/00

Abstract: PROBLEM TO BE SOLVED: To prevent condensation and reduce humidifying amount and decrease amount of frost on a cooler by keeping humidity distribution in a refrigerator constant. SOLUTION: By installing a humidifier 8 in the downstream side of a cooler 6a in cooling air flow a required humidity is obtained in a vicinity of a cold air outlet part 20 and a uniform humidity is kept within a refrigerator chamber and supplied moisture can be used for uniformly humidifying the interior of the refrigerator so that condensation is prevented from occurring and humidifying amount is decreased and amount of frost on the cooling device can be decreased.

公开(公告)号：JPH09178322A

公开(公告)日：1997-07-11

申请号：JP33457295

申请日：1995-12-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： KAMITSUJI TOSHIO ,  NODA TOSHINORI ,  ENDO KATSUMI ,  ODA MASATAKA ,  MORISHITA KENICHI ,  HAMANO YASUKI ,  KANEOKA SHINICHI ,  KUBOTA YOSHITAKA ,  KURIMOTO KAZUNORI

IPC: F25D11/02 ,  F25B1/00

Abstract: PROBLEM TO BE SOLVED: To save the energy of a refrigerator by realizing appropriate number of revolution of a compressor and appropriate flow rate of an electric-driven expansion valve to cope with the change in the temperature of a cooler associated with opening/closing of an air passage control damper of the refrigerator on which an inverter is mounted to improve the operational efficiency and the cooling system efficiency of the refrigerator. SOLUTION: The number of revolutions of a compressor and the flow rate of an electric-driven expansion valve are determined by the number of revolutions and a flow rate operating means 25 using the output of an in-freezer differential temperature operating means 24, the number of revolutions and the flow passage resistance value are corrected by a number of revolutions and a flow rate correcting means 41 using the output from a cooler temperature detecting means 42, the number of revolutions of the compressor is controlled by an inverter circuit 26 by the command from the number of revolutions and the flow rate correcting means 41, and the flow rate is controlled by an electrically driven expansion valve control circuit 45.

公开(公告)号：JPH09138053A

公开(公告)日：1997-05-27

申请号：JP29674495

申请日：1995-11-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： HAMANO YASUKI ,  KUBOTA YOSHITAKA ,  ODA MASATAKA ,  NODA TOSHINORI ,  ENDO KATSUMI ,  KAMITSUJI TOSHIO ,  MORISHITA KENICHI ,  KANEOKA SHINICHI ,  KURIMOTO KAZUNORI

IPC: F25D21/06 ,  F25B47/02

Abstract: PROBLEM TO BE SOLVED: To increase the efficiency of defrosting, save energy, and to contrive freshness of a food at a high value by a method wherein defrosting is executed by operating a compressor through superlow rotation. SOLUTION: When the operation time of a number of revolution variable type (capacity variable type) compressor 17 attains a specified time by a defrosting timer 11, the number of revolutions variable type (capacity variable type) compressor 17 is operated at low rotation and cold air feed means 10 is stopped. When the number of revolutions variable type (capacity variable type) compressor 17 is operated at low rotation, the vaporization temperature of a refrigerant is increased to at least 0 deg.C being temperature at which frost is molten, and the temperature of a vaporizer 3 becomes also at last 0 deg.C. Frost adhered to the vaporizer 3 is defrosted through direct heat-exchange with the vaporizer 3 the temperature of which is at least 0 deg.C. This constitution improves the efficiency of defrosting, saves energy, and maintains freshness of a food at a high value.

公开(公告)号：JPH09138048A

公开(公告)日：1997-05-27

申请号：JP29674095

申请日：1995-11-15

Applicant: MATSUSHITA REFRIGERATION

Inventor： ENDO KATSUMI ,  KUBOTA YOSHITAKA ,  HAMANO YASUKI ,  NODA TOSHINORI ,  MORISHITA KENICHI ,  KAMITSUJI TOSHIO ,  KANEOKA SHINICHI ,  ODA MASATAKA ,  KURIMOTO KAZUNORI

IPC: F25D11/02

Abstract: PROBLEM TO BE SOLVED: To perform hihgly efficient operation control by a method wherein the number of revolutions of a compressor is controlled by a temperature differ ence between the temperature of a cooler and a set temperature. SOLUTION: A refrigerating chamber temperature is detected by a refrigerating chamber temperature detecting means 21, a set temperature is detected by a refrigerating chamber temperature setting means, and on/off of a compressor 17 are determined by a temperature difference therebetween. The temperature of a cooler 13 is detected by a cooler temperature detecting means 42 and the number of revolutions of a compressor 17 is decided by a number of revolutions computing means 25 by means of a temperature difference between a cooler temperature and a cooler set temperature. By controlling the number of revolutions of the compressor by an inverter circuit 26, a cooler temperature is not reduced more than necessary to cool a chamber, and high-efficient operation is performed.