CN212562994U - Heat-insulating material structure and heat-insulating heat-preserving door body - Google Patents
Heat-insulating material structure and heat-insulating heat-preserving door body Download PDFInfo
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- CN212562994U CN212562994U CN202020887134.0U CN202020887134U CN212562994U CN 212562994 U CN212562994 U CN 212562994U CN 202020887134 U CN202020887134 U CN 202020887134U CN 212562994 U CN212562994 U CN 212562994U
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Abstract
The utility model discloses a heat insulating material structure and adiabatic heat preservation door body belongs to adiabatic energy-conserving technical field, including the combined together two-layer above insulating material layer, adjacent two-layer between the insulating material layer and/or partial cloth has the support particle in the insulating material layer. To vacuum insulation panels evacuation inefficiency among the prior art, keep the poor technical problem of high vacuum stability, the utility model provides a heat-insulating material structure and adiabatic heat preservation door body, it can be in the efficiency that improves the evacuation, and can be long-time the state of keeping high vacuum.
Description
Technical Field
The utility model relates to an adiabatic energy-conserving technical field, concretely relates to heat-insulating material structure and adiabatic heat preservation door body.
Background
High vacuum insulation, generally requiring 1.33X 10 of insulation space-2Vacuum degree under Pa and leakage and deflation rate less than or equal to 5.0 multiplied by 10-7Pa.m3And/s, so that the convection heat transfer of the gas and the heat conduction of most residual gas can be eliminated, and a good heat insulation effect is achieved. High vacuum multilayer insulation typically uses tens of high reflectivity metal films as reflective layers and low thermal conductivity spacer materials as spacer layers in alternating combinations. The vacuum jacket and the multiple layers of heat insulating materials therein form a complete high-vacuum multiple-layer heat insulating structure, and can limit heat transfer through three ways of heat conduction, convection and radiation to the maximum extent. When the interior of the door body is drawn to 1.33 multiplied by 10-2High vacuum degree of Pa or better, leakage and air release rate less than or equal to 5.0 multiplied by 10-7Pa.m3And/s, and the thermal insulation material is reasonably perforated (slit), the heat transfer by convection is almost zero, and the multi-layer thermal insulation structure is mainly used for inhibiting the heat transfer by two ways of conduction and radiation.
In the existing vacuum metal heat insulation door body, a plurality of groups of metal supports are arranged in a jacket or the jacket is made of foam polystyrene. The vacuum door body made of metal supports well prevents deformation in the door body after vacuumizing, but has large heat conduction, heavy weight and poor heat insulation performance; the door body made of the foam polystyrene material has light weight, but large volume, needs to be made of the foam material with thick thickness and general heat insulation performance.
Meanwhile, in order to improve the heat preservation and insulation effect, for example, chinese patent No. CN209026391U, published 2019, 06, 25, discloses a composite vacuum insulation apparatus panel, which comprises a metal plate, a vacuum insulation panel and a vacuum valve, wherein the vacuum insulation panel is provided with an inner layer filling core material and an outer layer filling core material, and has the heat preservation and insulation effect. However, in the above patent, the inner layer filling core material and the outer layer filling core material are easily adhered to each other, so that gas between the two and the material itself cannot be rapidly removed, and the gas cannot be completely removed, thereby affecting the degree of vacuum inside the heat insulation device panel.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
To vacuum insulation panels evacuation inefficiency among the prior art, keep the poor technical problem of high vacuum stability, the utility model provides a heat-insulating material structure and adiabatic heat preservation door body, it can be in the efficiency that improves the evacuation, and can be long-time the state of keeping high vacuum.
2. Technical scheme
In order to solve the above problem, the utility model provides a technical scheme does:
the heat insulating material structure comprises more than two heat insulating material layers which are combined together, wherein support particles are distributed between every two adjacent heat insulating material layers and/or in the heat insulating material layers, and the support particles are made of materials with heat conductivity coefficient not more than 0.2W/m.K.
The utility model adopts the design of multiple layers of heat insulation material layers to improve the heat insulation performance, and adopts the arrangement mode of the support particles, so that the heat insulation door body can keep a high vacuum state for a long time, thereby ensuring the heat insulation performance of the heat insulation door body, and simultaneously the support particles can reduce the direct contact area of the adjacent two layers of heat insulation material layers, reduce the contact transfer of heat and ensure that the heat insulation material structure has good heat insulation effect; the material with lower heat conductivity coefficient can effectively reduce the heat transfer efficiency of the two heat insulation material layers 1 in an interval state.
Optionally, the heat insulating material layer includes a first reflective layer, a second reflective and flame retardant layer, which are sequentially combined together. The first reflecting layer and the second reflecting layer are matched so that almost no temperature gradient exists in the space of the heat insulation and preservation door body, the radiation heat exchange is reduced, and the flame-retardant layer plays a role in heat insulation and flame retardance.
Optionally, two or more of the layers of insulating material combined together are stitched together by a plurality of fire-blocking threads. A plurality of fire lines play a role in fixing a plurality of layers of heat-insulating material layers and can effectively prevent support particles from being accumulated between two layers of heat-insulating material layers.
Optionally, the edge of the thermal insulation material layer is covered by a fireproof edge. When the fireproof edge plays a role in fixing the edge of the heat insulation material layer, the support particles are prevented from falling down between the two heat insulation material layers.
The heat insulation door body comprises two metal door plates which are arranged oppositely, the heat insulation material structure which is arranged between the two metal door plates in a clamping mode, and a supporting assembly used for limiting the deformation of the metal door plates. The heat-insulating material structure and the supporting component are matched to support the metal door plate, so that a better supporting effect on a vacuum-formed heat-insulating door body is achieved, and the door body is effectively prevented from being deformed due to the reduction of the internal pressure after vacuum pumping.
Optionally, the support assembly includes a plurality of supporting seats arranged on the metal door panel, the supporting seats include an inner supporting portion, an outer supporting portion and a connecting rod for connecting the inner supporting portion and the outer supporting portion, and the metal door panel is provided with a fixing hole matched with the connecting rod. The metal door plate is simultaneously supported by the inner and outer supporting parts, and the supporting effect is better than that of a single supporting part; the arrangement of a plurality of supporting seats enables all parts of the metal door plate to be evenly stressed, and local deformation can be effectively avoided.
Optionally, the inner supporting portion is a hollow ring body sleeved at one end of the connecting rod. Compare integrated into one piece's structure, adopt above-mentioned mosaic structure to help reducing the difficult and easy degree that the supporting seat installed to the metal door plant.
Optionally, a heat insulation structure for reducing the contact area is arranged on the supporting seat. The heat insulation structure has the purposes of reducing the contact area and increasing the contact thermal resistance, so that the support seat 1 and the heat insulation material structure have good heat insulation performance, and the heat transfer through the transfer heat is reduced as much as possible
Optionally, a diversion trench is arranged on the support seat. When the vacuum state is pumped, the gas in the heat insulation and heat preservation door body can be discharged outwards quickly through the diversion trench, so that the gas discharge efficiency is improved.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the multiple layers of heat insulation material layers can greatly reduce the heat leakage of the heat insulation structure and improve the heat insulation performance.
(2) The arrangement of the supporting particles enables adjacent two layers of the heat insulation material layers to have certain gaps, so that the heat insulation material layers cannot be attached together, the contact transfer of heat is avoided, and the heat insulation material structure has a good heat insulation effect.
(3) The arrangement of the supporting particles enables gas between two adjacent layers of heat insulation material layers to be discharged more easily, so that the heat insulation performance of the heat insulation door body is guaranteed.
(4) The heat is reflected for many times by the first reflecting layer and the second reflecting layer and is absorbed by the multilayer heat-insulating material little, so that the temperature gradient is hardly existed in the space of the heat-insulating heat-preserving door body, and the radiation heat exchange is reduced.
(5) The supporting assembly is matched with the heat insulating material structure to support the left end and the right end of the heat insulating door body, the upper part and the lower part of the heat insulating door body are supported, and the door body is effectively prevented from deforming due to overlarge internal pressure after vacuumizing.
Drawings
FIG. 1 is a schematic structural view of a thermal insulation material structure according to the present invention;
FIG. 2 is a schematic view of the layer structure of the thermal insulation material layer according to the present invention;
FIG. 3 is a side view of a heat insulating door body according to the present invention;
FIG. 4 is a front view of a heat insulation door body in the present invention;
fig. 5 is a schematic sectional view of a heat insulation door body in the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at A;
1. a layer of thermal insulation material; 11. a first reflective layer; 12. a second reflection; 13. a flame retardant layer; 2. supporting the particles; 3. a fire line; 4. fireproof edges; 5. a metal door panel; 51. a fixing hole; 6. a support assembly; 61. a supporting seat; 611. an inner support portion; 612. An outer support portion; 613. a connecting rod; 614. and a diversion trench.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings 1-5 and the accompanying examples.
Example 1
With reference to fig. 1 and 2, the thermal insulation material structure of this embodiment includes two or more thermal insulation material layers 1 combined together, and support particles 2 are distributed between two adjacent thermal insulation material layers 1 and inside the thermal insulation material layers 1, and in other embodiments, the support particles 2 may be only disposed between two adjacent thermal insulation material layers 1 or only disposed inside the thermal insulation material layers 1.
Regarding the concept of the outgassing rate, any solid material can dissolve and adsorb some gases in the atmospheric environment, and when the material is placed in a vacuum, the outgassing will be caused by dissolution and desorption, for general vacuum equipment, the outgassing of the material is the most important gas source of a vacuum system, the low outgassing rate is the most important gas source for releasing relatively less gas at the same time to reduce the influence on the vacuum state, and the low outgassing rate is common knowledge in the art, and therefore, the details are not repeated here.
The heat leakage of the heat insulation structure can be greatly slowed down through the arrangement of the multiple layers of heat insulation material layers, and the heat insulation performance is improved; the arrangement of the supporting particles 2 ensures that a certain gap is formed between two adjacent heat-insulating material layers 1 so as not to be attached together, and the gap can reduce the direct contact area of the two adjacent heat-insulating material layers 1 in a vacuum state, reduce the contact transfer of heat and ensure that the heat-insulating material structure has a good heat-insulating effect; the arrangement of the supporting particles 2 increases the gap between two adjacent layers of the heat insulation material layers 1 and the gap inside the heat insulation material layers 1, so that gas between the heat insulation material layers 1 and inside the heat insulation material layers 1 is released more efficiently and thoroughly during vacuumizing, and when the heat insulation material structure with low gas content is applied to a heat insulation door body, the heat insulation door body can be kept in a high vacuum state for a long time, thereby ensuring the heat insulation performance of the heat insulation door body; the support particles 2 are made of materials, so that during the vacuumizing action, less gas is released by the support particles 2, the vacuumizing time can be shortened, and the internal gas is quickly exhausted; meanwhile, the support particles 2 can be prevented from releasing a large amount of gas to influence the high vacuum state in the heat insulation door body, and the high vacuum state can be kept for a long time; when the heat-insulating material structure is subjected to vacuum drying at 120 ℃ for pretreatment, the arrangement of the supporting particles 2 enables the water adsorbed in the processing process of the heat-insulating material layer 1 and other wrapped gases to be discharged more efficiently and thoroughly.
Example 2
With reference to fig. 1 and 2, in the structure of the thermal insulation material according to the present embodiment, compared with embodiment 1, the support particles 2 are made of a material having a thermal conductivity of not more than 0.2W/m · K.
The material with the heat conductivity coefficient not more than 0.2W/m.K has poor heat conductivity, and when the support particles 2 made of the material are contacted with the heat-insulating material layer 1, the heat transfer efficiency of the two heat-insulating material layers 1 in an interval state can be effectively reduced; in this embodiment, the support particles 2 are bead-shaped particles made of glass material with a diameter of 0.2-1mm, and the glass material has a low outgassing rate in a vacuum state, so that the heat conduction efficiency is reduced and the influence on the vacuum state is reduced, and the heat conduction coefficient of the glass is less than 0.2W/m.K, so that the glass has a poor heat conduction effect and is resistant to high temperature; in other embodiments, the support particles 2 can be made of one of polycarbonate, calcium carbonate glass and organic glass PMMA, the support particles 2 made of multiple materials can be mixed for use, when the support particles 2 are bead-shaped particles, the surfaces of the bead-shaped particles are more round than those of particles in other shapes, the support particles 2 and the heat insulation material layer 1 can be prevented from being damaged due to extrusion of the heat insulation material layer 1 when the support particles 2 are vacuumized, and meanwhile, the heat insulation structure formed by combining the multiple heat insulation material layers 1 has a good support effect; in other embodiments, the shape of the support particles 2 is not limited, and may be circular, three-dimensional, or irregular particles, and the like, and may play a supporting role.
Example 3
With reference to fig. 1 and 2, in the structure of the thermal insulation material according to the present embodiment, compared with embodiment 1 or 2, the thermal insulation material layer 1 includes a first reflective layer 11, a second reflective layer 12, and a flame retardant layer 13, which are sequentially combined together.
In a vacuum environment, the number of gas molecules is reduced, the collision among molecules is reduced, the heat exchange among the molecules is reduced, namely the number of the gas molecules with migration energy is small, the heat is reflected for multiple times by the first reflecting layer 11 and the second reflecting layer 12, and the great part of the heat is absorbed by the heat insulating material layer 1, so that the temperature gradient is hardly existed in the space of the heat insulating door body, the radiation heat exchange is greatly reduced, and the flame retardant layer 13 plays a role in heat insulation and flame retardance; in an alternative embodiment, the first reflective layer 11 is an aluminum foil, the second reflective layer 12 is a metal film, and the flame retardant layer 13 is a flame retardant fiberglass paper; in another alternative embodiment, the first reflective layer 11 is a metal film, the second reflective layer 12 is an aluminum foil, and the flame retardant layer 13 is a flame retardant fiberglass paper.
In this embodiment, the supporting particles 2 are sandwiched between the first reflective layer 11, the second reflective layer 12 and the flame retardant layer 13, so that the thermal insulation performance inside the thermal insulation material layer 1 is improved, and the thermal insulation material layer is easier to maintain in a high vacuum state than before.
Example 4
With reference to fig. 1 and 2, compared with any one of embodiments 1-3, the heat insulating material structure of this embodiment is obtained by sewing two or more layers of the heat insulating material 1, which are combined together, together through a plurality of fire-proof lines 3, in this embodiment, the fire-proof lines 3 are glass fiber lines, and the two fire-proof lines 3 are distributed at a distance of 200mm and 300mm, and may be 200mm, 300mm, 220mm, or 280mm, and the like in specific applications, and may be selected as required and sewn according to the style of fig. 2.
The multiple layers of heat-insulating material layers 1 are sewn together through the fire lines 3 distributed at equal intervals, gaps for fixing the support particles 2 are formed in the heating material layers 1 between the two connected fire lines 3, the support particles 2 are filled in the gaps, the support particles 2 can be prevented from being stacked between the two layers of heat-insulating material layers 1, and the support particles 2 are stably and uniformly distributed between the two adjacent layers of heat-insulating material layers 1; the optional embodiment is, many fireproof line 3 equidistant distribution, adopts above-mentioned distribution mode, and the interval between two adjacent fireproof line 3 does not have too big difference to can support even subregion of granule 2, avoid supporting the inhomogeneous adiabatic effect that influences of piling up of granule 2.
Example 5
With reference to fig. 1 and 2, in the structure of the thermal insulation material of the present embodiment, compared with any one of embodiments 1 to 4, the edge of the thermal insulation material layer 1 is covered by the fireproof edge 4; in this embodiment, the fireproof edge 4 is made of glass fiber cloth, the edges of the multiple layers of heat insulating material layers 4 are wrapped with the glass fiber cloth in half, and the glass fiber threads are used to wrap the edges in zigzag.
Example 6
With reference to fig. 1 to 6, the heat insulation door body of the present embodiment includes two metal door panels 5 disposed opposite to each other, the heat insulation material structure according to any one of embodiments 1 to 5 sandwiched between the two metal door panels 5, and a support assembly 6 for limiting deformation of the metal door panels 5.
In this embodiment, the metal door panel 5 is made of a stainless steel mirror-surface thin plate with small blackness coefficient, high single-surface smoothness and low temperature resistance, and in a vacuum state, heat conduction mainly takes radiation as a main part, most of the heat radiated to the metal door panel 5 is reflected, and only a few of the heat is absorbed by the metal door panel 5; after the heat-insulating material structure is adopted, the heat-insulating door body has good heat-insulating performance; the heat insulation material structure plays a role in supporting the upper end and the lower end of the heat insulation door body at the moment when the heat insulation door body is pumped to a vacuum state, so that the shape of the heat insulation door body is preliminarily fixed, meanwhile, the supporting components 6 are matched with the heat insulation material structure to support the left end and the right end of the heat insulation door body, the upper end, the lower end, the left end and the right end of the heat insulation door body are supported, the door body is effectively prevented from deforming due to the fact that the internal pressure is too small after vacuumizing, meanwhile, the reaction force of the supporting components 6 on the two sides is applied to the heat insulation material structure to play a good role in fixing and supporting the heat insulation material structure, the two metal; the heat insulation door body adopting the heat insulation material structure has small volume, thereby having wider application field.
Example 7
With reference to fig. 1-6, compared with embodiment 6, the heat insulation door body of the present embodiment includes a plurality of supporting seats 61 disposed on the metal door panel 5, where each supporting seat 61 includes an inner supporting portion 611, an outer supporting portion 612, and a connecting rod 613 for connecting the inner supporting portion 611 and the outer supporting portion 612, and the metal door panel 5 is provided with a fixing hole 51 matched with the connecting rod 613.
The inner supporting part 611 and the outer supporting part 612 simultaneously support the inner side and the outer side of the metal door panel 5, the inner side of the inner supporting part 611 supports the heat insulation material structure, when the two metal door panels 5 are pumped to a vacuum state, the metal door panel 5 deforms inwards in a concave manner under the action of vacuum, the inner supporting part 611 supports the metal door panel 5 and the heat insulation material structure to limit the inward deformation of the metal door panel 5, and the metal door panel 5 is simultaneously supported by the inner supporting part and the outer supporting part, so that the supporting effect is better compared with a single supporting part; the arrangement of a plurality of supporting seats 61 makes each part of metal door panel 5 evenly atress, can effectively avoid local deformation.
Example 8
With reference to fig. 1-6, compared with embodiment 6 or 7, the heat insulation door body of the present embodiment has an inner support portion 611 formed as a hollow ring body sleeved on one end of the connecting rod 613.
The inner support portion 611 is a hollow ring body, which is sleeved at one end of the connecting rod 613 opposite to the outer support portion 612, when being installed, the connecting rod 613 firstly passes through the fixing hole 51 from the outer side of the metal door panel 5 and enables the outer support portion 612 to abut against the outer side of the metal door panel 5, and at this time, the inner support portion 611 is sleeved at the connecting rod 613 at the inner side end of the metal door panel 5, so that the installation and fixation of the support seat 61 can be completed.
Example 9
With reference to fig. 1 to 6, in the heat insulation door body according to the present embodiment, compared with any one of embodiments 6 to 8, the supporting seat 61 is provided with a heat insulation structure for reducing a contact area.
In this example, the heat insulation structure is a rough surface on the contact surface of the support seat 61 and the heat insulation material structure, and the rough surface has low smoothness, so that when the support seat 61 is in contact with the end surface of the heat insulation material structure, particles on the rough surface of the support seat 61 are preferentially abutted against the end surface of the heat insulation material structure, and the rough surface plays a role in reducing the contact area and increasing the contact thermal resistance, so that the support seat 61 and the heat insulation material structure have good heat insulation performance, and the heat transfer through the heat transfer is reduced as much as possible; in other embodiments, the heat insulation structure may be a granular protrusion integrally formed on the contact surface of the support base 61 and the heat insulation material structure or a groove formed by inward recession on the contact surface of the support base 61 and the heat insulation material structure.
Example 10
With reference to fig. 1 to 6, compared with any one of embodiments 6 to 9, in the heat insulation door body according to this embodiment, a diversion trench 614 is disposed on the support seat 61.
In this embodiment, the guiding gutter is for running through the cylindrical through-hole of seting up on supporting seat 61, and when supporting seat 61 installed on metal door plant 5, this cylindrical through-hole was the horizontal mode setting, was taking out when vacuum state this moment, and the inside gaseous accessible guiding gutter 614 of the thermal insulation heat preservation door body outwards discharges fast to improve gaseous exhaust efficiency.
Example 11
The adiabatic heat preservation door body shaping mode that this embodiment provided includes: placing the multi-layer heat-insulating material layer structure between the processed metal door plates 5, placing the whole door body in a high vacuum obtaining device, and when the inside of the device is coveredPumping to 1.33X 10-2Pa high vacuum or better vacuum degree, high vacuum sealing in the door body, excellent heat insulation and heat preservation performance of the door body, heat transfer of convection and conduction is reduced, radiation heat exchange is greatly reduced, and the door body can be widely applied to the fields of refrigerator heat preservation, fruit and vegetable fresh keeping, food storage and the like.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (9)
1. A thermally insulating material structure, characterized by: the heat insulation material comprises more than two heat insulation material layers which are combined together, support particles are distributed between every two adjacent heat insulation material layers and/or in the heat insulation material layers, and the support particles are made of materials with heat conductivity coefficient not more than 0.2W/m.K.
2. A thermal insulation material structure as claimed in claim 1, wherein: the heat insulating material layer includes a first reflective layer, a second reflective and flame retardant layer, which are sequentially combined together.
3. A thermal insulation material structure as claimed in claim 1, wherein: the combined more than two layers of the heat-insulating material layers are sewn together through a plurality of fireproof threads.
4. A thermal insulation material structure as claimed in claim 1, wherein: the edges of the heat insulating material layer are covered by fireproof edges.
5. A heat insulation door body is characterized in that: the heat insulation material structure comprises two metal door plates which are oppositely arranged, the heat insulation material structure as claimed in any one of claims 1 to 4 which is clamped between the two metal door plates, and a supporting component for limiting the deformation of the metal door plates.
6. The heat insulation door body according to claim 5, characterized in that: the supporting component comprises a plurality of supporting seats arranged on the metal door plate, each supporting seat comprises an inner supporting part, an outer supporting part and a connecting rod used for connecting the inner supporting part and the outer supporting part, and the metal door plate is provided with a fixing hole matched with the connecting rod.
7. The heat insulation door body according to claim 6, characterized in that: the inner supporting part is a hollow ring body sleeved at one end of the connecting rod.
8. The heat insulation door body according to claim 6, characterized in that: and a heat insulation structure for reducing the contact area is arranged on the supporting seat.
9. The heat insulation door body according to claim 6, characterized in that: and a diversion trench is arranged on the supporting seat.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020887134.0U CN212562994U (en) | 2020-05-22 | 2020-05-22 | Heat-insulating material structure and heat-insulating heat-preserving door body |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020887134.0U CN212562994U (en) | 2020-05-22 | 2020-05-22 | Heat-insulating material structure and heat-insulating heat-preserving door body |
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| CN212562994U true CN212562994U (en) | 2021-02-19 |
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