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    HEAT-INSULATING BOX
    21.
    发明专利
    HEAT-INSULATING BOX 失效

    公开(公告)号：JPH07242765A

    公开(公告)日：1995-09-19

    申请号：JP3568394

    申请日：1994-03-07

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： TSUJITA HIROSHI ,  SHIMABARA KAZUO ,  OBATA SHINGO ,  MORIKIYO KAZUHIRO ,  NAKADA JUNICHI

    IPC: F25D23/06 ,  C08G18/62 ,  C08J9/14 ,  C08L25/00 ,  C08L25/02 ,  C08L33/00 ,  C08L33/04 ,  C08L33/08 ,  C08L51/00 ,  C08L51/04

    Abstract: PURPOSE:To obtain a heat-insulating box in which the inner box is firmly bonded to the heat-insulating material made by using HCFC 123 or HCFC 141b as the blowing agent, the inner box does not discolor during molding, and the inner box does not suffer from cracking due to the above blowing agent by using a specified resin composition as the material for the constituent inner resin box. CONSTITUTION:The inner resin box of the heat-insulating box is made from a composition obtained by mixing a graft copolymer obtained by polymerizing a monomer mixture comprising 35-52wt.% vinyl cyanide compound and 48-65wt.% aromatic vinyl compound in the presence of a conjugated diene synthetic rubber with a copolymer comprising 35-52wt.% vinyl cyanide compound and 48-65wt.% aromatic vinyl compound, an n-propyl acrylate/n-butyl acrylate/ sec-butyl acrylate copolymer coated with a copolymer comprising 35-52wt.% vinyl cyanide compound and an aromatic vinyl oligomer.

    HEAT INSULATING DOOR
    23.
    发明专利
    HEAT INSULATING DOOR 失效

    公开(公告)号：JPH0674649A

    公开(公告)日：1994-03-18

    申请号：JP22692292

    申请日：1992-08-26

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： MATSUMOTO TAKUYA ,  MURONO YOSHIRO ,  NAKADA JUNICHI ,  TSUJITA HIROSHI ,  KOTORII TOSHIO ,  OHASHI NOBUO ,  MORIKIYO KAZUHIRO ,  OBATA SHINGO ,  SHIMABARA KAZUO

    IPC: F25D21/04 ,  F25D23/02

    Abstract: PURPOSE:To prevent degradation of a heat transfer rate of a foamed heat insulating material and dew condensation on surfaces of a refrigerator by providing a constitution which comprises an outer shell of a synthetic resin, an inner shell, a foamed heat insulating material filled in a space surrounded by the outer shell and the inner shell and an aluminum foil applied to a rear surface of the outer shell. CONSTITUTION:A heat insulating door comprises an outer shell 1 of a synthetic resin, an inner shell 2 of a synthetic resin combined with the outer shell 1, a foamed heat insulating material 3 filled in a space defined by the outer shell 1, the inner shell 2 and a frame member and closely attached to the outer shell 1 and the inner shell 2, and an aluminum foil 4 applied to a rear surface of the outer shell 1. With this arrangement, moisture outside of a chamber of a refrigerator will not pass through the outer shell 1 to accumulate in the foamed heat insulating material 3 in the form of water, so that a heat transfer rate of the foamed heat insulating material 3 is not degraded thus enabling prevention of dew condensation on a surface of a door of a refrigerator. Also, it is not necessary to enlarge a wall thickness of the door with the result that it is possible to reduce the material cost of the foamed heat insulating material 3 in manufacture of doors and enhance a volume efficiency of a chamber of a refrigerator.

    24.
    发明专利
    失效

    公开(公告)号：JPH05288461A

    公开(公告)日：1993-11-02

    申请号：JP9048292

    申请日：1992-04-10

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： TSUJITA HIROSHI ,  SHIMABARA KAZUO ,  NAKADA JUNICHI ,  MURONO YOSHIRO ,  KOTORII TOSHIO ,  OHASHI NOBUO ,  MORIKIYO KAZUHIRO ,  MATSUMOTO TAKUYA ,  OBATA SHINGO

    IPC: F25D23/06 ,  F25D23/08

    Abstract: PURPOSE:To charge a foamable heat insulator in a uniform density over an entire heat insulation box by charging the insulator in a space between an inner box and an outer box, and mounting a vacuum heat insulation panel at a position which avoids a passage of stock solution of the state before the insulator is foamed at the side of the outer box in the space. CONSTITUTION:A heat insulation box 1 for a refrigerator, etc., has an inner box 2 made of plastic, and an outer box 3 made of iron. A foamable heat insulator 4 such as hard polyurethane foam, etc., is charged in a space between the boxes 2 and 3 through an inlet 6, and a vacuum heat insulation panel 5 is provided on an inner surface of the box 3 in the space. In this case, the panel 5 is mounted at a position which avoids a passage 11 of stock solution 7 of the state before the insulator 4 to be poured from the inlet 6 is foamed. Thus, a flow of the solution 7 is not interrupted by the panel 5, and the insulator 4 can be also charged sufficiently in uniform density above the panel 5.

    HEAT EXCHANGER
    25.
    发明专利
    HEAT EXCHANGER 失效

    公开(公告)号：JPH02251378A

    公开(公告)日：1990-10-09

    申请号：JP6973189

    申请日：1989-03-22

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： DOMOTO HIDEAKI ,  TSUJITA HIROSHI ,  HIKASA HAJIME ,  ITO TAKEMICHI

    IPC: F25B39/02 ,  B23K11/00

    Abstract: PURPOSE:To secure refrigerant passages having strength at the time of manufacturing the heat exchanger by welding the outermost peripheral end faces of two plates and providing intermittent weld zones on the refrigerant passages and forming the shape of swellings on bends of a straight line part and circular arc parts in opposition to each other. CONSTITUTION:A first weld zone which is TIG-welded is formed on the outermost peripheral end faces of the two plates 2 and 3 mainly composed of iron leaving an outlet and an inlet of the refrigerant passages 4 and the passage waveform bottoms and a flat plate part are formed of second weld zones 8 which are spot-welded. In addition, the second weld zones 8 form the refrigerant passages 4 combining rectilinear arrangement and orthogonal arrangement. By this method, the strength of the refrigerant passages is improved and the initial refrigerant passages are ensured.

    MANUFACTURE OF PLATE TYPE HEAT EXCHANGER
    26.
    发明专利
    MANUFACTURE OF PLATE TYPE HEAT EXCHANGER 失效

    公开(公告)号：JPS63203279A

    公开(公告)日：1988-08-23

    申请号：JP3506487

    申请日：1987-02-18

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： DOMOTO HIDEAKI ,  TSUJITA HIROSHI ,  ITO TAKEMICHI

    IPC: F28F3/14 ,  B21D53/04 ,  B23K9/00 ,  B23K15/00 ,  B23K26/21

    Abstract: PURPOSE:To improve the quality of a product by welding the most outside peripheral parts and unswelling parts of two or plural superposed unformed metal plates by a proper method and then, pressing-in a proper fluid from opening parts of the metal plates to swell and form the others except the unswelling parts. CONSTITUTION:The two metal plates 12 are superposed while these are unformed and the most outside peripheral surfaces 13 are welded leaving the opening parts 14. Next, the unswelling parts 15 are welded. Afterward, after the metal plates 12 are fixed on forming metallic molds 19 and 20, the proper fluid is pressed-in from the opening parts 14 to swell swelling parts 22. By this method, the product with the stable quality can be effectively manufactured.

    REFRIGERANT DRAWING OUT DEVICE
    30.
    发明专利
    REFRIGERANT DRAWING OUT DEVICE 审中-公开

    公开(公告)号：JP2003148836A

    公开(公告)日：2003-05-21

    申请号：JP2001341675

    申请日：2001-11-07

    Applicant: MATSUSHITA REFRIGERATION ,  MATSUSHITA ELECTRIC IND CO LTD

    Inventor： TSUTSUMI TSUNEKATA ,  TOMIZAKI OSAMU ,  DOMOTO HIDEAKI ,  TSUJITA HIROSHI

    IPC: F25B45/00

    Abstract: PROBLEM TO BE SOLVED: To provide a refrigerant drawing out device improving the refrigerant recovering efficiency in recovering the refrigerant from a refrigerator waste. SOLUTION: In this refrigerant drawing out device 11 for recovering the refrigerant from a pipe part 28 by moving a needle member 16 to form a hole on a refrigerant distribution pipe, a cut face 27 of the needle member 16 is provided with angles of plural stages, and an angle α of the first cut face 27a is more than an angle βof the second cut face 27b, whereby the clogging caused by the tube wall is prevented, and the refrigerant recovering efficiency is improved.

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