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公开(公告)号：JPH0313744A
公开(公告)日：1991-01-22
申请号：JP14902989
申请日：1989-06-12
Applicant: MATSUSHITA REFRIGERATION
Inventor： SHIMOMURA NOBUO , NODA TOSHINORI , KITAYAMA HIROSHI
Abstract: PURPOSE:To remove an unpleasant sensation felt when warm wind blows against the face of an office worker in heating and improve the comfortability of a thermal environment by forming a ventilating duct communicating with a conditioned air supply and having a highly heat conductive upper portion and providing a chair with the opening of the ventilating duct behind the lower portion of the back of the chair on a floor surface under a desk. CONSTITUTION:A ventilating duct 9 is formed which communicates with a conditioned air supply and has a highly heat conductive upper portion on a floor surface under a desk. An opening 10 for ventilating the conditioned air is formed behind the lower portion of the back of a chair. When the heating air blowout opening 10 and the ventilating duct 9 are opened and a cooling air blowout opening 6 is closed in heating, the conditioned air from a wind path 2 is blown out from the heating air blowout opening 10 via the ventilating duct 9 without flowing in a wind path 3. At the same time, the heating air warms the upper portion 11 of the highly heat conductive duct forming the ventilating duct 9. A radiant heat from the upper portion 11 of the duct 9 acts as a floor heater to conduct a foot heating in a working area. Thus, a comfortable heating condition is formed without warm wind blowing against the face of an office worker as conventional to enable the comfortability of a thermal environment to be improved.
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公开(公告)号：JPH0282057A
公开(公告)日：1990-03-22
申请号：JP23395688
申请日：1988-09-19
Applicant: MATSUSHITA REFRIGERATION
Inventor： HATTA HIROSHI , SHIMOMURA NOBUO
Abstract: PURPOSE:To prevent a refrigerating machine oil from being discharged into a refrigerating cycle from an oil separator by installing a flow rate control valve to an oil return pipe which connects said oil separator with an suction pipe of a compressor and setting the opening of said flow rate valve so that its opening may be increased when the compressor comes to a halt. CONSTITUTION:Whether a compressor 1 is under operation or under suspension is decided by the step 30 when an oil return flow rate control means 21 detects a signal transmitted from a frequency control means 20. When the compressor is under suspension, the opening of an oil return flow rate control valve indicated in the step 34 is made full by an oil return flow rate control valve opening increment means 22. When it is under operation, a compressor operation frequency is detected in the step 31 while an oil return flow rate control valve opening is calculated based on the aforesaid data in the step 32, and an oil return flow rate control valve opening control is carried out in the step 32 as well. As described above, a refrigeration machine oil remaining in an oil separator can be easily returned to the compressor. It is, therefore, possible to prevent the refrigerating machine oil from being discharged into a cooling cycle from the oil separator when the compressor is called for to start again.
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公开(公告)号：JPH01302072A
公开(公告)日：1989-12-06
申请号：JP13187088
申请日：1988-05-30
Applicant: MATSUSHITA REFRIGERATION
Inventor： HATTA HIROSHI , SHIMOMURA NOBUO
Abstract: PURPOSE:To improve the reliability of a compressor by largely setting the opening of a flow control valve provided in a refrigerant tube for connecting an oil separator to the compressor for a predetermined period of time when an oil level in the compressor becomes lower than a predetermined value. CONSTITUTION:Refrigerator oil discharged together with refrigerant from a compressor 1 is separated by an oil separator 2, reduced under pressure through a refrigerant tube 12 b y a flow control valve 8, introduced to a suction tube 11 through a refrigerant tube 13, and returned to the compressor 1. An oil level detection sensor provided in the compressor 1 detects the oil level of the compressor 1, detects the operating frequency of the compressor 1 if it is a predetermined level or more, calculates the opening of the valve 8 on the basis of this frequency, and controls the valve to a determined opening. If it is the predetermined level or less, the opening of the valve is once set to fully open, the the valve 8 is then controlled. Thus, the oil level in the compressor 1 can be held at the predetermined level or more even in any operating condition.
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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
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.
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公开(公告)号：JP2000172882A
公开(公告)日：2000-06-23
申请号：JP34285798
申请日：1998-12-02
Applicant: MATSUSHITA REFRIGERATION
Inventor： SHIMOMURA NOBUO , NAKANO AKIRA , KAMISAKO TOYOSHI
Abstract: PROBLEM TO BE SOLVED: To obtain high-accuracy analyzed results from a fluid simulator which simulates a fluid flowing around an object by improving the grid generating efficiency and actually calculating efficiency of the simulator. SOLUTION: A fluid simulator is provided with an I/F section 2 which transforms the external size data of an object into a prescribed data format of the UCD format, etc., with a 3D-CAD 1 as the central figure, an analytical data generating section 3 which automatically generates such a Descartes grid that its width becomes narrower stepwise at arbitrary intervals as the grid approaches the object in a space in an object to be analyzed based on the classification information of the 3D-CAD 1 by using the external size data of the object, and an analyzing section 4 which performs numerical analysis in a local collocation procedure at grid points in a prescribed region near the object by using grid data and the other analytical data and in a Descartes grid local collocation procedure using a differential method at the other grid points. The simulator is also provided with a displaying section 5 which visualizes the analyzed results. Thereby, the simulator can make grid generation and actual calculation in a short time and, at the same time, provides highly accurate analyzed result and can cope with the problem about the viscosity of a simulated fluid.
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Patent Agency Ranking
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
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.
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公开(公告)号：JPH08247620A
公开(公告)日：1996-09-27
申请号：JP5432595
申请日：1995-03-14
Applicant: MATSUSHITA REFRIGERATION
Inventor： NAKANO AKIRA , NODA TOSHINORI , SHIMOMURA NOBUO , HAMANO YASUKI , KANEOKA SHINICHI , KUBOTA YOSHITAKA
Abstract: PURPOSE: To secure high heat exchange characteristic of a condenser provided in a machine chamber of a refrigerator body and high heat dissipation property of a compressor. CONSTITUTION: A refrigerator includes in a rear and lower part of a refrigerator body a machine chamber 2 including a condenser 5, a compressor 6, an impeller 7 of a crossflow fan, an outer box 3 for partitioning the refrigerator body and the machine chamber 2, and a bottoms plate on which the condenser 5 and the compressor 6 are provided parallely. In the refrigerator, the outer box 3 is configured into a smooth curved surface bulged to the side of the refrigerator body and the side of an air intake in a bottom plate is brought into close contact with the impeller 7 and folded downward by 90 degree.
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公开(公告)号：JPH08189750A
公开(公告)日：1996-07-23
申请号：JP419695
申请日：1995-01-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： KANEOKA SHINICHI , NODA TOSHINORI , SHIMOMURA NOBUO , HAMANO YASUKI , KUBOTA YOSHITAKA
Abstract: PURPOSE: To increase the heat-exchanging efficiency of a condenser without enlarging a machine chamber by a method wherein the condenser, a blower, compressor and evaporation tray are arranged in the machine chamber which is partitioned at a lower rear part of a refrigerator main body, and the blower is arranged on the air flow upstream side of the condenser. CONSTITUTION: A machine chamber is formed at a lower rear part of a refrigerator main body 1 for which a heat insulating material is inserted between an external box and internal box. Then, the machine chamber 2 is constituted of an external box bottom plate 3, condenser 4, blower 5 which is arranged on the air flow upstream side of the condenser 4, and mounting plate 7 on which a compressor 6 is mounted, and a tilted surface part is provided on the external box bottom plate 3. Then, a front side air inlet 9 is provided on the external box bottom plate 3 of the refrigerator main body 1, and a slit cover 18 to prevent mouse from entering is provided. Then, on a machine chamber cover 8, a plurality of slit-form rear side air inlets 10, and a plurality of slit-form air discharging ports 11 are provided, and the inside of the machine chamber is partitioned into right and left two chambers by a partitioning plate 12. Then, a bell-mouth 12a is provided on the partitioning plate 12, and an evaporation tray 13 to receive defrosting water is arranged directly above the compressor 6.
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公开(公告)号：JPH08189749A
公开(公告)日：1996-07-23
申请号：JP420695
申请日：1995-01-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： HAMANO YASUKI , NODA TOSHINORI , SHIMOMURA NOBUO , KANEOKA SHINICHI , KUBOTA YOSHITAKA
IPC: F25D19/00
Abstract: PURPOSE: To ensure the high heat-exchanging property of a condenser, and reduce noises by preventing an air convection from short-circuiting. CONSTITUTION: At a lower rear part of a refrigerator main body 1, a machine chamber 2 is partitioned with an external box bottom plate and mounting plate. Then, on the mounting plate, a condenser 4, blower 5 which is equipped with a partitioning plate 11 with a bell-mouth 12, compressor 6 and evaporation tray are provided. On a machine chamber cover 8, a rear side air inlet 8a and air discharging port 8b are provided, and a front side air inlet 9 is provided on the tilted surface part of the external box bottom plate at a front part of the machine chamber 2. Then, on the bottom of the mounting plate, a shielding plate 15 which hangs to a floor surface, extending to the total width of the refrigerator main body, is provided.
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公开(公告)号：JPH08189748A
公开(公告)日：1996-07-23
申请号：JP419795
申请日：1995-01-13
Applicant: MATSUSHITA REFRIGERATION
Inventor： KUBOTA YOSHITAKA , NODA TOSHINORI , SHIMOMURA NOBUO , HAMANO YASUKI , KANEOKA SHINICHI
IPC: F25D19/00
Abstract: PURPOSE: To increase 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. Then, on the mounting plate, a condenser 4, a condenser 5 which is located on the upstream side of the condenser 4, compressor 6 and an evaporation tray are arranged. On the machine cover 8, air discharging ports 11, 19 and rear side air inlet 10 are provided. Then, on the tilted surface part of the external box bottom plate 3, a front side air inlet 9 is provided. The air discharging port 11 is opened between the condenser 4 and compressor 6.
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