Vacuum heat insulating material, heat insulating box using vacuum heat insulating material, refrigerator, refrigerating/air-conditioning apparatus, water heater, equipments, and manufacturing method of vacuum heat insulating material
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A47B-096/04
B32B-023/00
B29D-023/00
F16L-059/065
출원번호
US-0161234
(2011-06-15)
등록번호
US-9074717
(2015-07-07)
우선권정보
JP-2008-332904 (2008-12-26)
발명자
/ 주소
Nomura, Kyoko
Iwata, Syuichi
Nakashima, Hiroshi
출원인 / 주소
MITSUBISHI ELECTRIC CORPORATION
대리인 / 주소
Buchanan Ingersoll & Rooney PC
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
A highly reliable vacuum heat insulating material having excellent processability, usability and heat insulating performance and a heat insulating box using the vacuum heat insulating material are provided. A vacuum heat insulating material related to the present invention includes: a core material
A highly reliable vacuum heat insulating material having excellent processability, usability and heat insulating performance and a heat insulating box using the vacuum heat insulating material are provided. A vacuum heat insulating material related to the present invention includes: a core material structured by a laminated structure of an organic fiber assembly formed by forming an organic fiber into a sheet shape and cutting an end face with a predetermined length, and having a core material opening portion formed by a through hole or a notch with cutting; a gas-barrier outer cover material containing the core material inside, having a sealing portion for sealing surrounding of the sheet-shaped organic fiber assembly and surrounding of the core material opening portion, and hermetically sealing an inside with almost vacuum status by sealing the sealing portion; and an outer cover material opening portion provided at the outer cover material under a status in which the sealing portion provided at the surrounding of the sheet-shaped organic fiber assembly and the surrounding of the core material opening portion is sealed, being a through hole or a notch which is smaller than the core material opening portion with a sealed amount, and a long fiber being equal to or longer than a length of the sheet is used for the organic fiber.
대표청구항▼
1. A vacuum heat insulating material comprising: a core material structured by a laminated structure of an organic fiber assembly made by forming an organic fiber into a sheet, having a cutting portion where an end face is cut so as to be a predetermined length; anda gas-barrier outer cover material
1. A vacuum heat insulating material comprising: a core material structured by a laminated structure of an organic fiber assembly made by forming an organic fiber into a sheet, having a cutting portion where an end face is cut so as to be a predetermined length; anda gas-barrier outer cover material containing the core material inside, and having a sealing portion for sealing surrounding the cutting portion in a range being larger than the cutting portion of the core material with an amount of sealing length,wherein an inside of the outer cover material is hermetically sealed to substantially a vacuum by sealing the sealing portion of the outer cover material, andwherein at least one long fiber, each at least one long fiber being equal to or longer than a length of the core material, is used for the organic fiber. 2. The vacuum heat insulating material of claim 1, wherein a thickness of the organic fiber assembly is, when the organic fiber assembly is sealed inside of the gas-barrier outer cover material, at least 3 times and no more than 18 times of a diameter of the organic fiber. 3. The vacuum heat insulating material of claim 1, wherein the organic fiber assembly is formed in a sheet by applying heat deposition on continuous organic fiber, andwherein an area of the heat deposited portion is made no more than 20% of an area of the sheet. 4. The vacuum heat insulating material of claim 3, wherein the heat deposited portion is provided with a through hole or a concave portion which is smaller than a size of the heat deposited portion. 5. The vacuum heat insulating material of claim 1, wherein the organic fiber assembly is formed in a sheet by applying heat deposition on continuous organic fiber,wherein a fabric weight of a non-woven cloth which is the organic fiber assembly is at least 4.7 g/m2 and no more than 70 g/m2, andwherein the heat deposited portion is made to penetrate from a front surface to a rear surface of the organic fiber assembly. 6. The vacuum heat insulating material of claim 1, wherein the organic fiber assembly is formed in a sheet by applying heat deposition on continuous organic fiber,wherein a fabric weight of a non-woven cloth which is the organic fiber assembly is at least 4.7 g/m2 and no more than 100 g/m2, andwherein the heat deposited portion is made not to penetrate from a front surface to a rear surface of the organic fiber assembly. 7. The vacuum heat insulating material of claim 1, wherein a fabric weight of a non-woven cloth which is the organic fiber assembly is at least 85 g/m2 and no more than 198 g/m2. 8. The vacuum heat insulating material of claim 1, wherein a cross sectional shape of a fiber forming the organic fiber assembly is made a modified cross sectional shape. 9. The vacuum heat insulating material of claim 1, wherein a plurality of types of core material having different fabric weights are mixed and laminated. 10. The vacuum heat insulating material of claim 1, wherein the core material is formed by a first organic fiber assembly folded and laminated and a second organic fiber assembly folded and laminated, andwherein the first organic fiber assembly and the second organic fiber assembly are folded so as to intersect each other. 11. The vacuum heat insulating material of claim 1, wherein the organic fiber is continuous in a length direction or a width direction of the organic fiber assembly. 12. The vacuum heat insulating material of claim 1, wherein an organic fiber of the organic fiber assembly is one of polyester, polystyrene, polypropylene, polylactate, aramid, and liquid crystalline polymer. 13. A heat insulating box comprising: an external box; andan internal box arranged inside of the external box,wherein the vacuum heat insulating material of claim 1 is provided at either of a gap on a surface of the external box between the external box and the internal box, a gap on a surface of the external box between the external box and the internal box, and a gap on a surface of the internal box between the external box and the internal box. 14. The heat insulating box of claim 13, wherein a spacer is provided between the external box and the vacuum heat insulating material. 15. A refrigerator provided with the vacuum heat insulating material of claim 1 on a storage room door or a heat insulating wall between a machine room containing a compressor and a cooler room containing a cooler generating cold air. 16. The refrigerator of claim 15, wherein the vacuum heat insulating material is provided with an opening portion, andwherein the opening portion is arranged at a position of a piping connecting the compressor and the cooler so that the piping passes through the vacuum heat insulating material. 17. A refrigerating/air-conditioning apparatus comprising: an outdoor unit having a cabinet having an almost rectangular cubic shape, a partition wall for partitioning inside of the cabinet into a fan room containing a fan and a machine room containing a compressor, and the vacuum heat insulating material of claim 1 provided at least a part of an inside or an outside of the machine room. 18. A water heater comprising: a cabinet having a rectangular cubic shape or a cylindrical shape; anda hot water tank having a cylindrical shape, for reserving water or hot water, and contained in the cabinet,wherein all or at least a part of inside wall of the cabinet is provided with the vacuum heat insulating material of claim 1. 19. An equipment comprising: a cylindrical container,wherein surrounding of the container is provided with the vacuum heat insulating material of claim 1 in which a long fibered organic fiber having a length being equal to or longer than a length of the core material is used. 20. An equipment displaying an overall view or a partial view of the equipment on a rear surface or a side surface of a body of the equipment, and further displaying a provided position of the vacuum heat insulating material of claim 1 in either of the overall view or the partial view. 21. The vacuum heat insulating material of claim 1, wherein the organic fiber assembly is formed in a sheet by applying heat deposition on continuous organic fiber,wherein a fabric weight of a non-woven cloth which is the organic fiber assembly is at least 140 g/m2 and no more than 198 g/m2, andwherein the heat deposited portion is made to penetrate from a front surface to a rear surface of the organic fiber assembly. 22. A vacuum heat insulating material comprising: a core material structured by a laminated structure of an organic fiber assembly made by forming an organic fiber into a sheet and cutting an end face with a predetermined length, or structured by after laminating the organic fiber assembly made by the organic fiber formed into the sheet, cutting the end face with the predetermined length, and having a core material opening portion formed by a through hole or a notch provided by cutting;a gas-barrier outer cover material containing the core material inside, having a sealing portion for sealing surrounding of the core material structured by the laminated structure of the organic fiber assembly sheet and surrounding of the core material opening portion, and hermetically sealing an inside to substantially a vacuum by sealing the sealing portion; andan outer cover material opening portion provided at the outer cover material under a status in which the sealing portion provided at the surrounding of the core material and the surrounding of the core material opening portion is sealed, being a through hole or a notch which is smaller than the core material opening portion with a sealed amount,wherein at least one long fiber, each at least one long fiber being equal to or longer than a length of the core material, is used for the organic fiber. 23. A vacuum heat insulating material comprising: a core material structured by a laminated structure of an organic fiber assembly formed by forming an organic fiber into a sheet and heat deposition applied, and having a cutting portion where an end face is cut so as to be a predetermined length; anda gas-barrier outer cover material containing the core material inside, and having a sealing portion for sealing surrounding of the cutting portion in a range being larger than the cutting portion of the core material with an amount of sealing length,wherein an inside of the outer cover material is hermetically sealed to substantially a vacuum by sealing the sealing portion of the outer cover material, andwherein a thickness of the organic fiber assembly is at least 3 times and no more than 18 times of an average fiber diameter of the organic fiber, a fabric weight of the organic fiber assembly is at least 4.7 g/m2 and no more than 70 g/m2, and a range in which the organic fiber assembly is provided with a heat deposited portion is no more than 20% of an area of the organic fiber assembly sheet wherein at least one long fiber, each at least one long fiber being equal to or longer than a length of the core material, is used for the organic fiber.
Fujimori, Yosuke; Nakano, Hideaki; Yamamoto, Nobuo; Abiko, Syohei; Hanaki, Takayuki, Vacuum thermal insulating material and method of manufacturing the same, and thermal insulating box having the vacuum thermal insulating material.
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