A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler particles, and may be formed into structures such as tapes or composites, for example, by bonding the material between two outer layers. Advantageously, composites may be flexed, stretched, or bent without significant dusting or loss of insulating properties.

Aerogel/ptfe composite insulating material

PROBLEM TO BE SOLVED: To provide a vacuum heat insulating material and a refrigerator capable of securing reliability by reducing time degradation of heat insulating performance when the vacuum heat insulating material is used in a housing, with respect to the vacuum heat insulating material and the refrigerator using the same. SOLUTION: In this refrigerator wherein the vacuum heat insulating material 30 having a core material 31 composed of a fiber material laminated body, an outer wrapping material covering the core material 31 and composed of a plurality of layers, and an adsorbing material mounted inside of the outer wrapping material, is attached to one of an outer plate 11 and an inner plate 12 between the outer plate 11 and the inner plate 12 of a heat insulating housing to form a heat insulating part with urethane foam mounted between the outer plate 11 and the inner plate 12, the outer wrapping material has a plurality of deposited layers formed by metal deposition on a base material composed of resin in such a state that the plurality of deposited layers are overlapped and stacked to be oppositely kept into contact with each other. COPYRIGHT: (C)2006,JPO&NCIPI

Vacuum heat insulating material and refrigerator using the same

PROBLEM TO BE SOLVED: To improve heating insulating performance and planarity in a vacuum heat insulating material covering a plurality of core materials by a covering material having gas barrier performance, and positioning each core material in an independent vacuum space. SOLUTION: In the vacuum heat insulating material 5, the plurality of core materials 6 is covered by the covering material 7 with gas barrier performance, having a heat welding layer on an inner side face, and decompressed and sealed therein, and each of the plurality of core materials 6 is positioned in the mutually independent vacuum space. Since recessed parts of a recessed and projecting face formed by a core material part having the core material 6 between the covering materials 7, and a non-core material part 8 not having the core materials 6 between the covering materials 7 are filled with a heat insulating material 9, heat insulating performance in the recessed part (the non core material part 8) of the recessed and projecting face, and unevenness of a vacuum heat insulating material 5 surface are improved, heat insulating performance as the whole vacuum heat insulating material 5 is also improved, and the vacuum heat insulating material 5 with superior applicability can be provided. COPYRIGHT: (C)2007,JPO&INPIT

Vacuum heat insulating material

The invention relates to a vacuum insulation panel (16) which can be used as an insulator for a refrigerator requiring heat insulation to be provided and also to a refrigerator incorporating such a vacuum insulation panel (16). The invention particularly relates to an arrangement for preventing convection spaces from being formed where an edge of the vacuum insulation panel is folded back. The vacuum insulation panel (16) includes a core (18) which has an inner film bag (21) in which a flexible inorganic fiber laminate (20) is accommodated, and an outer barrier bag (19) which is made of gas-impermeable film such as metallic foil laminated film and which accommodates the core (18). The inner film bag (21) includes a welded portion and a ventilation portion. The outer barrier bag (19) has a depressurized interior and has been sealed by welding. An edge of the inner film bag (21) is placed in an edge of the outer barrier bag (19).

Vacuum insulation panel and refrigerator incorporating the same

A plurality of thin parts (9a) of a thermally fused layer (7) are formed in portions of a sealing part (8) where the interval between gas barrier layers (6) of one and another outer covering part (4) changes continuously. A thick part (9b) of the thermally fused layer (7) is formed on the inner peripheral side of the innermost peripheral thin part (9a) and the outer peripheral side of the outermost peripheral thin part (9a) between adjacent thin parts (9a). Superior heat insulation performance is present for a long time period because the opposing thermally fused layers (7) between two adjacent thin parts (9a) are completely fused thermally.

Vacuum heat insulation material and manufacturing method therefor

In this vacuum heat insulator, an excellent heat insulating performance is obtained even at high temperature, and this excellent heat insulating performance is maintained for a long period. The hot insulating device and electric water heater using this vacuum heat insulator exhibit an excellent hot insulating performance, and are decreased in the power consumption for hot insulation. The vacuum heat insulator includes a laminate bag, and an insulating core placed in the laminate bag, and the inside of the laminate bag is evacuated in a vacuum state. The laminate bag is made of a laminate film. The laminate film includes a support layer, a deposition layer evaporated on the surface of the support layer, a protective layer placed at the surface side of the deposition layer, and a seal layer placed at the back side of the deposition layer. The deposition layer is formed of at least one material of metal and metal oxide. In this laminate film, (i) the support layer has a plastic film having a glass transition point of 87° C. or higher, (ii) the protective layer has a plastic film having a glass transition point of 87° C. or higher, (iii) the deposition layer has a property of transmitting high frequency magnetic field, or (iv) the laminate bag has a seal portion formed by junction of the seal layer, and the laminate film further as a metal foil placed at a position excluding the seal portion.

Vacuum heat insulator, hot insulating device using vacuum heat insulator, and electric water heater

PROBLEM TO BE SOLVED: To prevent cracks in an evaporation layer even at a high temperature and heighten heat insulation performance by using a plastic film having a specified glass transition temperature as a support layer for supporting the evaporation layer where metal or a metal ozide is deposited. SOLUTION: This vacuum heat insulating material is formed by packing a heat insulating core material 5 made of silica powder with a packing material. The packing material used is a laminated film formed by an evaporation layer 2 formed by depositing metal or metal oxide on the upper surface of the support layer 3, a protective layer l for protecting the surface of the evaporation layer 2, and a thermal deposition layer 4. The support layer 3 uses a plastic film having a glass transition temperature of 88 deg.C or more. For example, two kinds of resins, polyphenylene sulfide resin 25 μm thick and polyethylene naphthalate resin. The glass transition temperature of the polyphenylene sulfide resin is 87 deg.C, and the glass transition temperature of the polyethylene naphthalate resin is 121 deg.C.

PURPOSE:To enable to efficiently dissolve heat storage material during heating by a structure wherein heating is performed by providing heating sources, one of which covers the bottom surface and the other of which is vertical to the bottom surface, at the lower part of the heat storage device in a latent heat type heat accumulator, which stores and releases heat by means of phase change. CONSTITUTION:The heat storage device A consists of the heat accumulator 1, the heat storage material 2, a heat exchanger 13 for heating and a radiator 4 for taking-out heat. The heat exchanger 131 for heating, which covers the whole bottom surface 6, and the heat exchanger 132 for heating, which is vertical to the bottom surface 6, integrally constitute the heat exchanger 13 for heating. During the initial stage of dissolution of the heat storage material, the heat storage material 12 is dissolved at the central portion of the heat accumulator 1 by means of the heat exchanger 132 for heating on a form so as to pierce the heat accumulator 1, resulting in leaving undissolved heat storage material 22 on the upper wall surface in the heat accumulator 1. The undissolved heat storage material 22 is dissolved by obtaining heat from dissolved heat storage material 12 lying in the bottom and the central portions of the heat accumulator 1 and developing the convection of the dissolved heat storage material throughout the whole portion of the heat accumulator 1.

Heat storage device

PROBLEM TO BE SOLVED: To solidify a highly efficient heat-insulating material exhibiting thermal conductivity equal to or lower than static air by a binder without deteriorating the heat-insulating property. SOLUTION: The heat-insulating material is produced by solidifying silica secondary particles 3 of an element heat-insulating material exhibiting the thermal conductivity equal to or lower than the static air with the usage of 10% to 30% of the binder 5. Thus, the heat-insulating material capable of being easily handled and exhibiting the high heat-insulating property, the solidifying method thereof and the apparatus with the usage of it can be provided. COPYRIGHT: (C)2003,JPO

Mitsuhiro Sano

Papers

Vacuum heat insulator, hot insulating device using vacuum heat insulator, and electric water heater

Vacuum heat insulating material

Heat storage device

Heat-insulating material, solidifying method therefor and apparatus using it

Vacuum thermal insulating material, insulated equipment and electric water heater using said material