Box body heat insulation structure of heat preservation box
By using two layers of vacuum insulation panels arranged in a staggered manner in the insulated box, the splicing gap path is extended, which solves the problems of thermal bridging effect and splicing gap of vacuum insulation panels on small equipment, and achieves the effects of high-efficiency insulation performance and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 益库(青岛)电子机械有限公司
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-28
AI Technical Summary
When vacuum insulation panels are used in small equipment, the thermal bridging effect of the external aluminum foil and the difficulty in completely fitting the splicing gaps result in poor insulation performance and high manufacturing costs.
The insulated box uses two layers of vacuum insulation panels, which are staggered longitudinally on the left and right sides and laterally on the top and bottom sides. A labyrinthine splicing gap path is formed between the inner liner and the polyurethane foam layer. By bonding the inner and outer vacuum insulation panels with the inner liner and the polyurethane foam layer, the bonding path is extended to reduce the thermal bridging effect.
It improves the thermal insulation performance of the insulated box, reduces the thermal bridging effect, simplifies the splicing process of the vacuum insulation panels, and reduces the manufacturing cost.
Smart Images
Figure CN224171399U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of insulated boxes, specifically to an insulated box body insulation structure. Background Technology
[0002] In the field of thermal insulation box technology, most of the materials currently used for insulation are polyurethane foam. This material has excellent insulation performance, but when encountering products with higher requirements for insulation performance, the thickness of the polyurethane foam layer can only be increased, which affects the space utilization rate of the product.
[0003] To address this issue, a new type of material, VIP board (vacuum insulation board), has emerged on the market. This material offers approximately 10 times better insulation than polyurethane foam. While this vacuum insulation board is highly advantageous for large-scale insulation equipment, its application in smaller equipment presents certain challenges.
[0004] Vacuum insulation panels have an outer layer of aluminum foil, meaning they are encapsulated with aluminum foil. While the material itself provides excellent insulation, the edges of the outer encapsulating aluminum foil create a thermal bridge effect, which is detrimental to heat preservation. During application, simply attaching the panels around the perimeter makes it difficult to completely seal the gaps between the panels. This may not have a significant impact on large equipment, but it is particularly noticeable on smaller equipment. Furthermore, if a single, integrated VIP panel were to be made, the manufacturing cost and the process would be greatly increased.
[0005] Therefore, how to use vacuum insulation panels in insulated boxes to both utilize the insulation properties of the material itself and avoid the adverse effects of gaps in the joints has become an urgent issue to be addressed. Utility Model Content
[0006] To overcome the above-mentioned defects, this utility model provides an insulated box body insulation structure with excellent heat insulation effect, which will be advantageous.
[0007] To achieve the above objectives, this utility model provides a thermal insulation structure for an insulated box, comprising an outer shell, an inner liner, and a polyurethane foam layer located between the outer shell and the inner liner. It also includes two layers of vacuum insulation panels arranged from the inside out between the inner liner and the polyurethane foam layer. Each vacuum insulation panel includes vacuum insulation panels on the left and right sides and vacuum insulation panels on the top and bottom sides. In each vacuum insulation panel, the left and right sides are longitudinally staggered, and the top and bottom sides are laterally staggered. The upper surface of the upper vacuum insulation panel is flush with the upper end face of one of the left and right vacuum insulation panels, and the lower surface of the lower vacuum insulation panel is flush with the lower end face of the other of the left and right vacuum insulation panels.
[0008] In this invention, by arranging two layers of vacuum insulation panels as a thermal supplement to the polyurethane foam layer, the thermal insulation performance of the insulated box is further improved; by staggering the longitudinal and transverse directions of each layer of vacuum insulation panels, the path of the splicing gap between the vacuum insulation panels, i.e. the bonding path, is extended, which can effectively block heat conduction and reduce the thermal bridging effect.
[0009] Furthermore, the two-layer vacuum insulation panel includes an inner vacuum insulation panel and an outer vacuum insulation panel. The vacuum insulation panels on the left and right sides of the inner vacuum insulation panel are attached to the outer surfaces of the left and right sides of the inner liner on the inside, and the vacuum insulation panels on the upper and lower sides of the inner vacuum insulation panel are attached to the outer surfaces of the upper and lower sides of the inner liner on the inside. Thus, the inner vacuum insulation panel is constructed as a first frame-type vacuum insulation panel layer with the same shape as the inner liner.
[0010] With the above structural arrangement, a first frame-type vacuum insulation panel layer with the same shape as the inner liner is surrounded on the outside of the inner liner, which facilitates the layout of the outer vacuum insulation panel while ensuring that the bonding path of this layer is extended.
[0011] Furthermore, the vacuum insulation panels on the left and right sides of the outer vacuum insulation panel are attached to the outer surfaces of the first frame-type vacuum insulation panel layer on the inside and to the left and right sides of the polyurethane foam layer on the outside. The vacuum insulation panels on the top and bottom sides of the outer vacuum insulation panel are attached to the outer surfaces of the first frame-type vacuum insulation panel layer on the inside and to the top and bottom sides of the polyurethane foam layer on the outside. Thus, the outer vacuum insulation panel is constructed as a second frame-type vacuum insulation panel layer with the same shape as the first frame-type vacuum insulation panel layer.
[0012] With the above structural arrangement, the outer side of the first frame-type vacuum insulation panel is surrounded by a second frame-type vacuum insulation panel with the same shape, which facilitates the layout of the outer vacuum insulation panel relative to the polyurethane foam layer while ensuring that the bonding path of the layer is extended.
[0013] Furthermore, in each layer of vacuum insulation panels, the upper surface of the upper vacuum insulation panel is flush with the upper end face of the right vacuum insulation panel in the left and right vacuum insulation panels, and the lower surface of the lower vacuum insulation panel is flush with the lower end face of the left vacuum insulation panel in the left and right vacuum insulation panels.
[0014] This structural arrangement ensures that each layer of vacuum insulation panels encloses the shape of the inner liner, with the vacuum insulation panels on the left and right sides arranged longitudinally and the vacuum insulation panels on the top and bottom sides arranged laterally, thus extending the bonding path of each layer.
[0015] Furthermore, at each corner of the inner liner, a maze-like path is ultimately formed by the splicing gaps between the two layers of vacuum insulation panels.
[0016] This setting extends the fitting path.
[0017] Furthermore, the maze-like path extends outwards in a stepped pattern from the corners of the inner liner.
[0018] These and other aspects of the present invention will be more clearly illustrated by referring to the embodiments described below. Attached Figure Description
[0019] The structure of this utility model, as well as its further objectives and advantages, will be better understood from the following description taken in conjunction with the accompanying drawings, wherein like reference numerals identify like elements:
[0020] Figure 1 This is a cross-sectional structural diagram of the thermal insulation structure of the insulated box body according to a specific embodiment of the present utility model.
[0021] Figure 2 yes Figure 1 A partially enlarged view of part E of the insulation structure of the insulated box shown. Detailed Implementation
[0022] The specific embodiments of this utility model will now be described in conjunction with the accompanying drawings.
[0023] In this document, the directional representations used to explain the structure and / or operation of the various parts of the disclosed embodiments, such as "up," "down," "inner," "outer," "left," and "right," are not absolute but relative. These representations are appropriate when the various parts of the disclosed embodiments are located in the positions shown in the figures, and if the position or reference frame of the disclosed embodiments changes, these representations must also change accordingly.
[0024] like Figure 1 and Figure 2As shown, a thermal insulation structure 100 for an insulated box according to a specific embodiment of the present invention includes an outer shell 1, an inner liner 5, and a polyurethane foam layer 2 located between the outer shell 1 and the inner liner 5. It also includes two vacuum insulation panels 3 arranged from the inside out between the inner liner 5 and the polyurethane foam layer 2, namely an inner vacuum insulation panel and an outer vacuum insulation panel. Each vacuum insulation panel 3 includes vacuum insulation panels located on the left and right sides, namely a vacuum insulation panel 31 on the left and a vacuum insulation panel 33 on the right, and vacuum insulation panels located on the upper and lower sides, namely a vacuum insulation panel 32 on the upper side and a vacuum insulation panel 34 on the lower side. In each layer of vacuum insulation panel 3, the left vacuum insulation panel 31 and the right vacuum insulation panel 33 are arranged longitudinally and staggered, while the upper vacuum insulation panel 32 and the lower vacuum insulation panel 34 are arranged laterally and staggered, such that the upper surface 320 of the upper vacuum insulation panel 32 is flush with the upper end surface 330 of the right vacuum insulation panel 33, and the lower surface 340 of the lower vacuum insulation panel 34 is flush with the lower end surface 310 of the left vacuum insulation panel 31.
[0025] In this invention, by arranging two layers of vacuum insulation panels 3 as a thermal insulation supplement to the polyurethane foam layer 2, the thermal insulation performance of the insulation structure 100 of the insulated box is further improved; by staggering the longitudinal and transverse arrangement of the four vacuum insulation panels in each layer of vacuum insulation panels 3, the path of the splicing gap between the vacuum insulation panels, i.e. the bonding path, is extended, thereby reducing heat conduction.
[0026] like Figure 1 and Figure 2 As shown, in this embodiment, the vacuum insulation board 31 on the left and the vacuum insulation board 33 on the right of the inner vacuum insulation board 3 are attached to the outer surfaces of the left and right sides of the inner liner 5 on the inner side, and the vacuum insulation board 32 on the upper side and the vacuum insulation board 34 on the lower side of the inner vacuum insulation board 3 are attached to the outer surfaces of the upper and lower sides of the inner liner 5 on the inner side, so that the inner vacuum insulation board is constructed into a first frame-type vacuum insulation board layer with the same shape as the inner liner 5.
[0027] Similarly, in this embodiment, the vacuum insulation board 31 on the left and the vacuum insulation board 33 on the right of the outer vacuum insulation board 3 are attached to the outer surfaces of the left and right sides of the first frame-type vacuum insulation board layer on the inside and to the left and right sides of the polyurethane foam layer 2 on the outside. The vacuum insulation board 32 on the upper side and the vacuum insulation board 34 on the lower side of the outer vacuum insulation board are attached to the outer surfaces of the upper and lower sides of the first frame-type vacuum insulation board layer on the inside and to the upper and lower sides of the polyurethane foam layer 2 on the outside. Thus, the outer vacuum insulation board 3 is constructed as a second frame-type vacuum insulation board layer with the same shape as the first frame-type vacuum insulation board layer.
[0028] It should be understood that, in addition to Figure 1In another embodiment of the arrangement shown, in each layer of vacuum insulation panel 3, the upper surface of the upper vacuum insulation panel 32 can be flush with the upper end face of the left vacuum insulation panel 31, and the lower surface of the lower vacuum insulation panel 34 can be flush with the lower end face of the right vacuum insulation panel 33. As long as the vacuum insulation panels on the left and right sides are arranged longitudinally and the vacuum insulation panels on the upper and lower sides are arranged laterally, the bonding path can be extended.
[0029] like Figure 2 As shown, and with reference Figure 1 In this embodiment, at each corner of the inner liner 5, a maze-like path is ultimately formed by the splicing gap between two adjacent vacuum insulation panels 3. This maze-like path (as shown by the arrow) extends outward in a stepped manner from the corner of the inner liner 5.
[0030] The technical content and features of this utility model have been disclosed above. However, it is understood that, under the inventive concept of this utility model, those skilled in the art can make various changes and improvements to the above structure, including combinations of the technical features disclosed or claimed herein, as well as other combinations that explicitly include these features. All such modifications and / or combinations fall within the technical field to which this utility model pertains and are within the protection scope of the claims of this utility model.
Claims
1. A thermal insulation structure for an insulated box, comprising an outer shell, an inner liner, and a polyurethane foam layer located between the outer shell and the inner liner, characterized in that it further comprises two layers of vacuum insulation panels arranged from the inside out between the inner liner and the polyurethane foam layer, each vacuum insulation panel comprising vacuum insulation panels located on the left and right sides and vacuum insulation panels located on the top and bottom sides, wherein, In each layer of vacuum insulation panels, the vacuum insulation panels on the left and right sides are arranged longitudinally and staggered, and the vacuum insulation panels on the top and bottom sides are arranged laterally. The upper surface of the upper vacuum insulation panel on the top and bottom sides is flush with the upper end surface of one of the vacuum insulation panels on the left and right sides, and the lower surface of the lower vacuum insulation panel on the top and bottom sides is flush with the lower end surface of the other vacuum insulation panel on the left and right sides.
2. The thermal insulation structure of the insulated box body as described in claim 1, characterized in that, The two-layer vacuum insulation panel includes an inner vacuum insulation panel and an outer vacuum insulation panel. The vacuum insulation panels on the left and right sides of the inner vacuum insulation panel are attached to the outer surfaces of the left and right sides of the inner liner on the inside, and the vacuum insulation panels on the top and bottom sides of the inner vacuum insulation panel are attached to the outer surfaces of the top and bottom sides of the inner liner on the inside. Thus, the inner vacuum insulation panel is constructed as a first frame-type vacuum insulation panel layer with the same shape as the inner liner.
3. The thermal insulation structure of the insulated box body as described in claim 2, characterized in that, The vacuum insulation panels on the left and right sides of the outer vacuum insulation panel are attached to the outer surfaces of the left and right sides of the first frame-type vacuum insulation panel layer on the inside and to the left and right sides of the polyurethane foam layer on the outside. The vacuum insulation panels on the upper and lower sides of the outer vacuum insulation panel are attached to the outer surfaces of the upper and lower sides of the first frame-type vacuum insulation panel layer on the inside and to the upper and lower sides of the polyurethane foam layer on the outside. Thus, the outer vacuum insulation panel is constructed as a second frame-type vacuum insulation panel layer with the same shape as the first frame-type vacuum insulation panel layer.
4. The thermal insulation structure of the insulated box body as described in any one of claims 1 to 3, characterized in that, In each layer of vacuum insulation panels, the upper surface of the upper vacuum insulation panel is flush with the upper end face of the right vacuum insulation panel among the left and right vacuum insulation panels, and the lower surface of the lower vacuum insulation panel is flush with the lower end face of the left vacuum insulation panel among the left and right vacuum insulation panels.
5. The thermal insulation structure of the insulated box body as described in any one of claims 1 to 3, characterized in that, At each corner of the inner liner, a maze-like path is ultimately formed by the splicing gaps between the two layers of vacuum insulation panels.
6. The thermal insulation structure of the insulated box body as described in claim 5, characterized in that, The maze-like path extends outward in a stepped manner from the corners of the inner liner.