公开(公告)号：JP2000220947A

公开(公告)日：2000-08-08

申请号：JP2184699

申请日：1999-01-29

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYAMOTO ICHIRO

IPC: F25D19/00 ,  F25B1/00 ,  F25B49/02 ,  F25D11/00

Abstract: PROBLEM TO BE SOLVED: To obtain a cooler employing a combustible hydrocarbon refrigerant in which serious accident, e.g. fire or explosion, is avoided when the hydrocarbon refrigerant leaks due to damage of parts. SOLUTION: A cooler includes a refrigeration cycle comprising a compressor, a condenser, a capillary tube, an evaporator, and a suction pipe coupled sequentially and circularly and encapsulated with a hydrocarbon refrigerant in which the welded parts of pipes in the refrigeration cycle are coated 17 partially or entirely.

公开(公告)号：JPH10318633A

公开(公告)日：1998-12-04

申请号：JP12663897

申请日：1997-05-16

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYAMOTO ICHIRO

IPC: F25B47/00

Abstract: PROBLEM TO BE SOLVED: To suppress the adhesion to a capillary tube of sludge such as wear powder generated in a cooling system and a polymer generated from a decomposed substance, and to prevent cooling performance from deteriorating by covering the inner surface of the capillary tube, for example, of the cooling system of a refrigerator with a material with superior mold release characteristics such as Teflon. SOLUTION: The cooling system of a refrigerator comprises a compressor, a condenser, a capillary tube 8, an evaporator, and a dryer, and a material that is effective to Teflon mold release is coated on the inner surface of the capillary tube 8. Also, two-layer structure is formed, where a tube being made of a material that is effective, for example, to the Teflon mold release is inserted onto the inner surface of the capillary tube 8, thus suppressing the adhesion of sludge to the capillary tube 8, and preventing, for example, the circulation amount of refrigerants and cooling performance from being reduced according to the reduction in the sectional area of the capillary tube 8.

公开(公告)号：JPH06117384A

公开(公告)日：1994-04-26

申请号：JP26454292

申请日：1992-10-02

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYAMOTO ICHIRO

IPC: F04C18/356 ,  F04C29/00

Abstract: PURPOSE:To prevent the abrasion between the roller and an vane of a compressor by forming a separated layer made of different material on the surface of the roller in the contact part between the roller and the vane. CONSTITUTION:A compressor is constituted of a motor-driven element, compression element, oil, cylinder 7, roller 11, vane 12, and a separated layer 27. In the separated layer 27, the outer surface fitted on the roller 11 in the contact part between the roller 11 and the vane 12 is formed to a mirror surface. Further, the abrasion of the roller 11 by the vane 12 is prevented by preventing the direct contact of the vane 12 with the surface of the roller 11, by forming the separated layer 27 on the roller 11. Accordingly, the abrasion between the separated layer 27 and the vane 12 can be reduced also by softening the abrasion resistance with the vane 12 by the separated layer 27 formed to a mirror surface.

公开(公告)号：JPH04161774A

公开(公告)日：1992-06-05

申请号：JP28751490

申请日：1990-10-24

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYAMOTO ICHIRO

IPC: F25C1/18

Abstract: PURPOSE:To enable ices having a high degree of transparency to be produced by a method wherein when water in a water supply tank is fed into an ice making pan through a water storing pan, a freezing action of one direction is carried from a surface of the water to a downward direction with cold air within a cooling chamber by a thermal insulation by a thermal insulating tank and a heating action with a heater from the lower surface. CONSTITUTION:When water temporarily stored in a water storing pan 21 from a water supply tank 18 is supplied by a water supply pump 22 into an ice making pan 33, the cold air cooled by a cooling device 8 is made to flow by a blower 9 to the ice making pan 33. In concurrent with a starting of the cooling action, a metallic plat 26 at a bottom surface is heated by a heater 28 within the thermal insulating tank 24. In addition, since the ice making pan 20 is covered by a thermal insulating material 27, a cooling action from an outer circumference is also restricted and a heat transmitting material efficiently dampens a reduction in water temperature at the bottom part of the small partition part 30 as well as heat from the heater 28, resulting in that a freezing action is progressed in one direction from up to the bottom of the ice making pan 29. As a result, as the ice is being produced, gaseous component or various impurities contained in the water are crystallized out of the ice crystal, discharged into the lower non-frozen water and so the ices having a high degree of transparency can be attained.

公开(公告)号：JPH04158010A

公开(公告)日：1992-06-01

申请号：JP28504290

申请日：1990-10-22

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYAMOTO ICHIRO

IPC: F25D23/06 ,  B29C39/10 ,  B29K105/04

Abstract: PURPOSE:To save a material and reduce the working processes by providing a skin penetrating hole on the surface of a foam body, and putting a foaming body into a plate material having a gaseous barrier property or a vessel comprised of a film, and then decompressing the inner part of the foam body. CONSTITUTION:A through hole 9 is made on the skin 6 of a foam body 4 by pressing, for example, a sharply pointed rod thereto. By providing the through hole 9, the foam body 4 can be put into a vessel 7 having a gaseous barrier property as it was without removing the skin 6 therefrom, and the inner part thereof can also be decompressed thereby. Therefore, it is not required to cut off a part of the foam body 4, and the materials and working processes can be reduced. Besides, for the vessel, anything utilizing a coated iron plate or a plastic molding has the same effect thereto.

公开(公告)号：JPH0428980A

公开(公告)日：1992-01-31

申请号：JP13397090

申请日：1990-05-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYAMOTO ICHIRO ,  TAKEUCHI WAKICHI

IPC: F25C1/18 ,  F25C1/24

Abstract: PURPOSE:To make ice of high transparence by a method wherein an ice making tray which is housed inside of a heat insulating tank provided in a cooling room, opened in an upper surface and arranged with a heater on a bottom part, and fixed to a supporting shaft at one side edge is rotated by driving the supporting shaft and water is supplied to the ice making tray. CONSTITUTION:When cool air of a cooler is supplied on the surface of water in an ice making tray 29, cooling operation is started and at the same time a metal plate 26 on a bottom part of a heat insulating tank 24 is heated by a heater 28 arranged on a bottom surface of the heat insulating tank 24. As an outer periphery of the ice making tray 29 is surrounded by a heat insulating material 27 of the heat insulating tank 24, the cooling operation from the outer periphery is restricted so that freezing proceeds only in one direction from the upward of the ice making tray 29 to the downward. Thus, if a freezing speed is set to be properly slow, for example, about 5mm/h, an in-water concentration of gaseous component solved in the water increases as generation of ice proceeds. Further the gaseous component bumps at a projection of a filling material on the surface of the ice making tray 29 to generate gas, whereby generation of bubbles inside of the produced ice is reduced. In addition, various kinds of impurities contained in the water are deposited outside a produced ice crystal and exhausted into the downward non-freezed water. As a result, extremely transparent ice is successively produced as time elapses.

公开(公告)号：JPH02134492A

公开(公告)日：1990-05-23

申请号：JP28619488

申请日：1988-11-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYAMOTO ICHIRO

IPC: F16L59/06 ,  F25D23/06

Abstract: PURPOSE:To provide decompressive heat insulation of, for ex., a refrigerator with a long durable reliability and strength for damage by forming the vessel from a metal sheet with a thickness below a specified value, filling it with continuously bubbled drafty foam having a small cell dia. below a specified value, decompressing the inside, and reducing the amount of a getter agent. CONSTITUTION:In decompressive heat insulation used as insulation of a box of refrigerator etc., three edges of a sealed vessel 9 consisting of metal foil with a thickness below 100mum are previously sealed with a fusion attachment part 10, and brazing material 12 is in advance applied to the opening 11, and a getter agent 6 and a continuously bubbled drafty foam 13 with the cell size no more than 200mum so as to shorten the mean free stroke of air, are put in the vessel 9, followed by decompression, and the brazing material 12 is melted to seal the opening 11, which will provide a decompressive heat insulation 8. As this heat insulation consists of only metal having perfect gas barrier property, there is no fear of gas intrusion from outside, which allows reduction of the getter agent 6, provides strength for damage, no fear of receiving damage at transit, and stabilizes the quality.

公开(公告)号：JPH02103386A

公开(公告)日：1990-04-16

申请号：JP25517788

申请日：1988-10-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYAMOTO ICHIRO ,  TSUDA KENJI ,  NAKADA JUNICHI

IPC: F25D23/08

Abstract: PURPOSE:To improve the heat insulating performance and make the inner casing hard to crack by using an inner casing which is formed by vacuum-molding a laminated sheet of a thin resin layer having acrylonitrile as its primary constituent and a styrene group resin layer, and a highly heat insulating material containing a foaming agent which has a strong resin melting effect. CONSTITUTION:The inner casing 4 is vacuum-molded by using a sheet which is manufactured by simultaneously extruding a styrene resin layer 6 and a copolymer resin layer 7 having a thickness of 100mm and comprising acrylonitrile. A highly heat insulating material 5 is filled in the space between the inner casing 4 and the outer casing 3 by using a foaming agent such as R-113, R-123, etc. which is superior in the heat insulating performance to R-11 but has a strong resin melting effect. This way, the heat insulating performance can be improved, and, since the resin layer 7 protects the styrene group resin layer 6 from the melting effect of the foaming agent for the highly heat insulating material 5, the inner casing 4 becomes hard to crack.

公开(公告)号：JPS6479570A

公开(公告)日：1989-03-24

申请号：JP23657287

申请日：1987-09-21

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYAMOTO ICHIRO

IPC: F16L59/06 ,  F25D23/06 ,  F25D23/08

Abstract: PURPOSE: To enhance the structural strength and the heat insulating performance of a heat insulator comprising an outer plate, an inner plate and a foam material by reducing the inner pressure and setting the rising direction of the foam material perpendicular to the thickness direction. CONSTITUTION: A foaming material 8, e.g. an open cell foaming material, is thrown into a space defined by an outer plate 3 and an inner plate 3 by inserting a nozzle 9 into an opening 11 made at the upper part of the outer plate 2. When the space is filled perpendicularly to the thickness direction A, the cells 10 of the foaming material 8 are oriented and elongated and the heat insulating performance is enhanced because a larger number of cells 10 are arranged per unit length in the thickness direction A. The space is then evacuated from the opening 11 where the foaming material 8 is provided at a part of the outer plate 2 and sealed with a gas barrier sealing material 12, e.g. an aluminum tape. Since the foaming material 8 is integrated with the outer plate 2 and the inner plate 3, excellent structural strength can be ensured.

公开(公告)号：JPS6414584A

公开(公告)日：1989-01-18

申请号：JP16806987

申请日：1987-07-06

Applicant: MATSUSHITA REFRIGERATION

Inventor： MIYAMOTO ICHIRO

IPC: F25D23/06

Abstract: PURPOSE: To enhance heat insulating performance by providing a heat insulating pack at a position shifted from a vertical extension from an injection port in the bottom to the top face thereby filling a foamable heat insulating material completely. CONSTITUTION: Heat insulating packs 11, 12 are secured through an adhesive to the back on the inside of an outer box 2 while avoiding the vertical extension connecting an injection port 7 made in the bottom 6 and the top face 10. Initial flow of a foamable heat insulating material 5 delivered from the injection port 7 flies toward the top face 10 and falls at a position appropriate for filling a space 4 completely. Subsequently, the space 4 is filled completely with the foamable heat insulating material 5.