CN114941767A - Vacuum heat-insulating plate and heat-insulating product - Google Patents
Vacuum heat-insulating plate and heat-insulating product Download PDFInfo
- Publication number
- CN114941767A CN114941767A CN202210396152.2A CN202210396152A CN114941767A CN 114941767 A CN114941767 A CN 114941767A CN 202210396152 A CN202210396152 A CN 202210396152A CN 114941767 A CN114941767 A CN 114941767A
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- Prior art keywords
- edge
- heat
- core material
- insulation panel
- vacuum insulation
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Compositions for or methods of fixing a thermally insulating material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/08—Means for preventing radiation, e.g. with metal foil
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/12—Insulation with respect to heat using an insulating packing material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/242—Slab shaped vacuum insulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/10—Insulation, e.g. vacuum or aerogel insulation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermal Insulation (AREA)
Abstract
The invention provides a vacuum insulation panel, comprising: an upper film, a lower film and a core material; the core material is provided with two first edges arranged oppositely and two second edges arranged oppositely; the upper film and the lower film are wrapped on the outer side of the core material, and a circle of hot edge sealing is formed on the outer side of the core material along the circumferential direction; wherein the first heat-sealed edge positioned at the outer side of the first edge of the core material and the second heat-sealed edge positioned at the outer side of the second edge of the core material are not in the same plane; the length of the lower film in the direction of extension of the first edge is greater than the length of the upper film in the direction of extension of the first edge, so that after heat sealing of the lower film and the upper film, the upper film forms at least one redundant portion on the first heat-sealed edge.
Description
Technical Field
The invention relates to a heat insulation material, in particular to a vacuum heat insulation plate.
Background
The vacuum insulation panel (VIP panel) is one of vacuum insulation materials, is formed by compounding a filling core material and a vacuum protection surface layer, and effectively avoids heat transfer caused by air convection, so that the heat conductivity coefficient can be greatly reduced to 0.002-0.004 w/m.k, which is 1/10 of the heat conductivity coefficient of the traditional insulation material.
The vacuum insulation consists of core insulation, gas adsorbent, desiccant and barrier membrane. The core material and the barrier film are vacuumized, and the heat transfer of gas in the heat insulation plate is reduced, so that the heat insulation effect is achieved.
The existing manufacturing process of the vacuum insulation panel mainly adopts the steps that firstly, a barrier film is manufactured into a bag with an opening on one side, then a core material made of glass fiber is put into the bag, the whole body is put into a vacuum chamber for vacuumizing, and after the required vacuum degree is reached, the edge sealing is heated and sealed.
The prior art has the following disadvantages:
1. the vacuum pumping is difficult: in order to obtain a vacuum insulation panel with a smaller thermal conductivity coefficient, the inside of the barrier film must be vacuumized to a lower vacuum degree, and after the vacuum insulation panel is vacuumized to a certain vacuum degree, gas comes out of the bag randomly through the free movement of gas molecules (rather than flowing out through pressure difference). The folded edge damages the structure of the barrier film, so that the barrier film is easy to leak; the barrier film is vacuumized and packaged by the prior art, an edge seal is inevitably formed in the middle of the periphery of the vacuum insulation panel, and the vacuum insulation panel needs to be attached to the surface of a refrigerator shell or other refrigeration equipment in the use process of the vacuum insulation panel, so that the edge seal needs to be folded to the surface of the insulation panel to form a regular shape. The barrier film has certain hardness, and in the production process, irregular film shrinkage can be generated under the action of atmospheric pressure when the barrier film is exposed to the atmosphere, so that the barrier film can form a plurality of tiny air holes in the process of disordered folding of the barrier film, so that external air enters, and the service life of the vacuum insulation panel is greatly influenced. Even when a relatively large leak rate is formed, the heat insulation plate can enter a large amount of gas, and the heat conductivity coefficient is greatly increased, so that the heat insulation plate directly fails.
2. Overlong edge sealing: because the core material made of the glass fiber has higher filling power, in order to meet the bagging process, the bag needs to be made larger, the core material can be put into the bag, and the bag is inevitably subjected to vacuum-pumping compression to form a longer edge sealing. Such a manufacturing process also results in waste of barrier film material.
Disclosure of Invention
The invention aims to solve the main technical problem of providing a vacuum heat-insulating plate with a small thermal bridge effect.
The invention provides a vacuum insulation panel, which comprises: an upper film, a lower film and a core material; the core material is provided with two first edges arranged oppositely and two second edges arranged oppositely;
the upper film and the lower film are wrapped on the outer side of the core material, and a circle of hot edge sealing is formed on the outer side of the core material along the circumferential direction; wherein the first heat-sealed edge positioned at the outer side of the first edge of the core material and the second heat-sealed edge positioned at the outer side of the second edge of the core material are not in the same plane;
the length of the lower film in the direction of extension of the first edge is greater than the length of the upper film in the direction of extension of the first edge, so that after heat sealing of the lower film and the upper film, the upper film forms at least one redundant portion on the first heat-sealed edge.
In a preferred embodiment: the one first heat-seal edges are correspondingly formed with two redundant parts, and the redundant parts are correspondingly arranged at the connecting part of the first edge and the second edge of the core material.
In a preferred embodiment: the redundant part is folded outwards along the length direction of the first edge.
In a preferred embodiment: the redundant portion is folded inward along the length of the first edge.
In a preferred embodiment: the folding directions of the redundant parts on the same hot-sealing edge are the same or different.
In a preferred embodiment: the redundant part of the different heat sealing edges is folded in the same direction or different directions.
In a preferred embodiment: the second heat-seal edge is positioned outside the upper surface of the core material, and the first heat-seal edge is positioned outside the side surface of the core material.
In a preferred embodiment: and the first heat-sealed edge is connected with the second heat-sealed edge through a transitional heat-sealed edge.
In a preferred embodiment: the transition heat sealing edge is an inclined surface.
The invention also provides a heat insulation product, and the vacuum heat insulation plate is applied to the heat insulation product.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the continuous automatic production is convenient, the manual carrying is reduced, and the adverse effect caused by human factors in the production process is reduced.
2. This product is in process of production, when exposing in the atmosphere, and barrier film contracts the back, and it is comparatively regular to warp, is difficult to appear the hidden danger point that acute angle etc. easily caused gas leakage and barrier film damage.
3. When the upper film and the lower film are made of different materials, the longer film can be an aluminum-free film with a smaller heat bridge, and the shorter film is an aluminum film. Compared with VIP with traditional structure, the same heat bridge reducing effect of yin and yang membranes can be achieved. And because the proportion of the aluminum film on the side wall of the VIP board is reduced, the thermal bridge effect can be further reduced.
4. Need to use the occasion behind the VIP hem, the product production process of this structure exposes behind the atmosphere, contracts under the effect of atmospheric pressure, and the shrink is out of shape comparatively regularly, can simplify the hem process, is favorable to automatic implementation to behind the hem, it is less to the barrier film damage, is favorable to prolonging VIP's life.
Drawings
FIG. 1 is a perspective view of the preferred embodiment 1 of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a perspective view of the preferred embodiment 2 of the present invention;
fig. 4 is a partially enlarged view of fig. 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like, should be construed broadly, such as "connected," which may be wall-mounted, detachable, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements.
Example 1
Referring to fig. 1-2, the present invention provides a vacuum insulation panel comprising: an upper film, a lower film 1 and a core material; the core material is provided with two first edges arranged oppositely and two second edges arranged oppositely;
the upper film and the lower film 1 are wrapped on the outer side of the core material, and a circle of hot edge sealing is formed on the outer side of the core material along the circumferential direction; the first heat sealing edge 2 positioned on the outer side of the first edge of the core material and the second heat sealing edge 3 positioned on the outer side of the second edge of the core material are not in the same plane; and the first thermal sealing edge 2 is connected with the second thermal sealing edge 3 through a transition thermal sealing edge 4 with an inclined surface. So that the second heat seal edge 3 is located outside the upper surface of the core material and the first heat seal edge 2 is located outside the side surfaces of the core material.
The length of the lower film 1 in the direction of elongation of the first edge is greater than the length of the upper film in the direction of elongation of the first edge, so that after heat sealing of the lower film 1 and the upper film, the upper film forms at least one redundant portion 5 on the first heat seal edge 2.
In this embodiment, two redundant portions 5 are correspondingly formed on the one first heat seal edge 2, and the redundant portions 5 correspond to the connection position of the first edge and the second edge of the core material. And, the redundant part 5 is folded outwardly along the length direction of the first side.
Example 2
Referring to fig. 3 to 4, the present embodiment is different from embodiment 1 in that: the redundant part 5 is folded inwards along the length direction of the first edge.
The folding directions of the respective redundant parts 5 in the embodiment 1 and the embodiment 2 are the same, and as a simple alternative, the folding directions of the redundant parts 5 on the same heat-sealed side may be different. Or the folding direction of the redundant part 5 on different heat seal edges can be different.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (10)
1. A vacuum insulation panel, comprising: an upper film, a lower film and a core material; the core material is provided with two first edges arranged oppositely and two second edges arranged oppositely;
the upper film and the lower film are wrapped on the outer side of the core material, and a circle of hot edge sealing is formed on the outer side of the core material along the circumferential direction; wherein the first heat-sealed edge positioned at the outer side of the first edge of the core material and the second heat-sealed edge positioned at the outer side of the second edge of the core material are not in the same plane;
the length of the lower film in the direction of extension of the first edge is greater than the length of the upper film in the direction of extension of the first edge, so that after heat sealing of the lower film and the upper film, the upper film forms at least one redundant portion on the first heat-sealed edge.
2. A vacuum insulation panel according to claim 1 wherein: the one first heat-seal edges are correspondingly formed with two redundant parts, and the redundant parts are correspondingly arranged at the connecting part of the first edge and the second edge of the core material.
3. A vacuum insulation panel according to claim 1 wherein: the redundant part is folded outwards along the length direction of the first edge.
4. A vacuum insulation panel according to claim 1 wherein: the redundant portion is folded inward along the length of the first edge.
5. A vacuum insulation panel according to claim 3 or 4 wherein: the folding directions of the redundant parts on the same hot-sealing edge are the same or different.
6. A vacuum insulation panel according to claim 3 or 4 wherein: the redundant part of the different heat sealing edges is folded in the same direction or different directions.
7. A vacuum insulation panel according to claim 1 wherein: the second heat-seal edge is positioned outside the upper surface of the core material, and the first heat-seal edge is positioned outside the side surface of the core material.
8. A vacuum insulation panel according to claim 1 wherein: and the first heat-sealed edge is connected with the second heat-sealed edge through a transitional heat-sealed edge.
9. A vacuum insulation panel according to claim 8 wherein: the transition heat sealing edge is an inclined surface.
10. An insulation product characterized by the use of a vacuum insulation panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210396152.2A CN114941767B (en) | 2022-04-15 | 2022-04-15 | Vacuum insulation panel and thermal insulation product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210396152.2A CN114941767B (en) | 2022-04-15 | 2022-04-15 | Vacuum insulation panel and thermal insulation product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114941767A true CN114941767A (en) | 2022-08-26 |
| CN114941767B CN114941767B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210396152.2A Active CN114941767B (en) | 2022-04-15 | 2022-04-15 | Vacuum insulation panel and thermal insulation product |
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| Country | Link |
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| CN (1) | CN114941767B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119217727A (en) * | 2024-11-29 | 2024-12-31 | 安徽赛特新材有限公司 | Edge sealing device and method for processing vacuum insulation panels |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172120A (en) * | 2003-12-10 | 2005-06-30 | Sanyo Electric Co Ltd | Vacuum heat insulating panel |
| JP2007155135A (en) * | 2005-04-27 | 2007-06-21 | Nisshinbo Ind Inc | Vacuum heat insulating material and manufacturing method thereof |
| DE202007008842U1 (en) * | 2007-06-18 | 2007-09-20 | The Vac Company Gmbh | Thermal insulation panel |
| CN101963267A (en) * | 2010-10-09 | 2011-02-02 | 上海海事大学 | Air insulating structure of vacuum insulation panel and packaging method thereof |
| CN202708481U (en) * | 2012-08-15 | 2013-01-30 | 苏州宏久航空防热材料科技有限公司 | Arc package bag for arc vacuum heat-insulating board core material |
| CN203641772U (en) * | 2013-12-27 | 2014-06-11 | 常州山由帝武节能新材料制造有限公司 | Roll-type vacuum insulated panel |
| US20150330071A1 (en) * | 2012-12-13 | 2015-11-19 | Oxford Brookes University | A thermal insulation panel |
| CN215862359U (en) * | 2021-05-19 | 2022-02-18 | 四川零零昊科技有限公司 | Vacuum insulation panel edge sealing structure and vacuum insulation panel |
| CN217977987U (en) * | 2022-04-15 | 2022-12-06 | 福建赛特新材股份有限公司 | Vacuum insulation panel and insulation product |
-
2022
- 2022-04-15 CN CN202210396152.2A patent/CN114941767B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172120A (en) * | 2003-12-10 | 2005-06-30 | Sanyo Electric Co Ltd | Vacuum heat insulating panel |
| JP2007155135A (en) * | 2005-04-27 | 2007-06-21 | Nisshinbo Ind Inc | Vacuum heat insulating material and manufacturing method thereof |
| DE202007008842U1 (en) * | 2007-06-18 | 2007-09-20 | The Vac Company Gmbh | Thermal insulation panel |
| CN101963267A (en) * | 2010-10-09 | 2011-02-02 | 上海海事大学 | Air insulating structure of vacuum insulation panel and packaging method thereof |
| CN202708481U (en) * | 2012-08-15 | 2013-01-30 | 苏州宏久航空防热材料科技有限公司 | Arc package bag for arc vacuum heat-insulating board core material |
| US20150330071A1 (en) * | 2012-12-13 | 2015-11-19 | Oxford Brookes University | A thermal insulation panel |
| CN203641772U (en) * | 2013-12-27 | 2014-06-11 | 常州山由帝武节能新材料制造有限公司 | Roll-type vacuum insulated panel |
| CN215862359U (en) * | 2021-05-19 | 2022-02-18 | 四川零零昊科技有限公司 | Vacuum insulation panel edge sealing structure and vacuum insulation panel |
| CN217977987U (en) * | 2022-04-15 | 2022-12-06 | 福建赛特新材股份有限公司 | Vacuum insulation panel and insulation product |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119217727A (en) * | 2024-11-29 | 2024-12-31 | 安徽赛特新材有限公司 | Edge sealing device and method for processing vacuum insulation panels |
| CN119217727B (en) * | 2024-11-29 | 2025-03-18 | 安徽赛特新材有限公司 | Edge sealing device and method for processing vacuum insulation panels |
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| Publication number | Publication date |
|---|---|
| CN114941767B (en) | 2024-05-10 |
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