VIP refrigerator door structure
By using a combination of four-sided vacuum insulation panels and edgeless vacuum insulation panels on the refrigerator door, along with self-developed door seals, the problems of high energy consumption and condensation in refrigerators have been solved, resulting in a thinner door and better insulation.
Patent Information
- Application Number
- CN202520443656.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Existing refrigerator door structures suffer from high energy consumption and condensation, and the door thickness is relatively thick, making it difficult to reduce the thickness without compromising insulation performance.
It adopts a combination structure of four-sided sealed vacuum insulation panels and edgeless vacuum insulation panels, combined with self-developed door seals, to form an embedded assembly structure. It eliminates traditional PU foam material and utilizes the high heat insulation performance of VIP panels to enhance the heat insulation effect and reduce the thickness of the door body.
It significantly reduces the overall energy consumption of the refrigerator, avoids condensation, and achieves a thinner door, improving the refrigerator's insulation performance and storage space.
Smart Images
Figure CN223610448U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a refrigerator door structure technical field especially a VIP refrigerator door structure. BACKGROUND
[0002] Vacuum insulation panel (Vacuum Insulation Panel, alias: VIP board) is a kind of vacuum heat-insulating material, it is by filling core material and vacuum protection surface layer composite, it effectively avoids the heat transfer caused by air convection, therefore heat transfer coefficient can greatly reduce, can reach 0.002-0.004w / m.k, it is 1 / 10 of the heat transfer coefficient of traditional heat-insulating material.Vacuum insulation panel with glass fiber core material lower heat transfer coefficient, mainly applied to refrigerator, freezer, energy-saving insulation of refrigerator car.
[0003] The existing refrigerator door adopts the combination structure of PU (polyurethane foam) and VIP board (vacuum insulation panel), that is, a VIP board is attached to the inner surface of the refrigerator door body, and PU is injected to fill the gap, thereby obtaining a refrigerator door body containing VIP.This design is mainly to improve the heat preservation performance of the refrigerator, while minimizing the thickness of the door body.However, this combination structure also has some potential drawbacks, which leads to the energy consumption of the refrigerator machine and the condensation phenomenon of the refrigerator door body.
[0004] As shown in Figure 1, it is a bag type VIP-PU foaming refrigerator door, the box body 91 and the door body 93 are connected through the door seal 92, wherein the door body 93 is composed of PU material 931 and VIP board 932, and there are mainly four heat transfer paths, T1 at the door seal 92, T2 at the VIP board 932, T3 at the joint of PU material 931 and VIP board 932, and T4 at the PU material 931. Figure 1 Among them, T3 and T4, due to the limitation of the poor thermal insulation performance of PU material 931 itself, heat transfer is more serious, and condensation phenomenon is more likely to occur, which requires more energy consumption of the refrigerator to maintain the constant temperature in the refrigerator cavity.
[0005] Therefore, the present inventors have made further research and developed a VIP refrigerator door structure, which gives rise to the present case. CONTENT OF THE UTILITY MODEL
[0006] The technical problem to be solved by the utility model is to provide a VIP refrigerator door structure, which can not only significantly reduce the energy consumption of the refrigerator machine and avoid the possible condensation phenomenon, but also has a thinner door body thickness than the prior art under the same heat preservation effect.
[0007] To solve the above technical problems, the technical solution of the utility model is:
[0008] A VIP refrigerator door structure includes a four-sided vacuum insulation panel, a door seal, and a borderless vacuum insulation panel. The door seal has a groove, the edge of the four-sided vacuum insulation panel is embedded in the groove of the door seal, the door seal abuts against the perimeter of the four-sided vacuum insulation panel, the side of the four-sided vacuum insulation panel with the edge is attached to the borderless vacuum insulation panel, and the vertical projections of the four-sided vacuum insulation panel and the door seal are located within the vertical projection of the borderless vacuum insulation panel.
[0009] Furthermore, the edge sealing width of the four-sided vacuum insulation panel is less than 20 mm.
[0010] Furthermore, the four-sided sealed vacuum insulation panel includes a high-barrier membrane, a desiccant, a getter, a core material, and a bottom shell. The desiccant and getter are placed in the core material, which is placed in the vacuum cavity formed by the high-barrier membrane and the bottom shell.
[0011] Furthermore, the bottom shell is molded as a single piece.
[0012] Furthermore, the edgeless vacuum insulation panel includes an upper shell, a gas extraction and guiding component, a getter, a desiccant, a core material, a high-barrier adhesive, and a lower shell. The gas extraction and guiding component, the getter, and the desiccant are embedded in the core material. The high-barrier adhesive is placed between the upper shell and the lower shell. The core material is placed in the vacuum cavity formed by the upper shell and the lower shell being fastened together.
[0013] Furthermore, the upper shell has a bottom edge that covers the lower shell and extends towards the inner wall of the lower shell.
[0014] Furthermore, a polyethylene coating is applied to the bottom edge, and the polyethylene coating is heat-sealed to the lower shell.
[0015] Furthermore, it also includes a perforated vacuum patch, with the upper housing having an air extraction hole, and the perforated vacuum patch covering the air extraction hole.
[0016] Furthermore, the upper shell has an upper top and an upper side, with the upper side perpendicular to the upper top, and the lower shell has a lower bottom and a lower side, with the lower side forming an obtuse angle with the lower bottom.
[0017] Furthermore, the upper and lower shells are molded as a single piece.
[0018] This utility model has the following advantages:
[0019] 1. It adopts two layers of VIP board stacking, and the self-developed door seal is an embedded assembly structure, which does not require the existing technology of refrigerator door blister liner, and has stronger structural stability, is not easy to fall off, and has better heat insulation effect.
[0020] 2. Using full VIP as insulation material provides better thermal insulation performance. When this product is applied to the refrigerator door, it can reduce the overall energy consumption of the refrigerator.
[0021] 3. The full VIP is used as the thermal insulation material, and the PU foaming material is removed, so that the same thermal insulation effect of the refrigerator can be realized only by using a thinner door body compared with the prior art, the refrigerator is lightened, and more storage space can be obtained under the condition that the peripheral size of the refrigerator is consistent. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 is a temperature distribution schematic diagram of the existing refrigerator door body when working;
[0023] Figure 2 is a structural schematic diagram of the utility model;
[0024] Figure 3 is Figure 2 is an enlarged schematic diagram of A of the utility model;
[0025] Figure 4 is a structural schematic diagram of the door sealing strip of the utility model;
[0026] Figure 5 is a structural schematic diagram of the four-edge sealing vacuum heat insulation plate of the utility model;
[0027] Figure 6 is a structural schematic diagram of the first embodiment of the utility model of the no-edge sealing vacuum heat insulation plate;
[0028] Figure 7 is a local structural schematic diagram of the first embodiment of the utility model of the no-edge sealing vacuum heat insulation plate;
[0029] Figure 8 is a structural schematic diagram of the second embodiment of the utility model of the no-edge sealing vacuum heat insulation plate;
[0030] Figure 9 is a local structural schematic diagram of the second embodiment of the utility model of the no-edge sealing vacuum heat insulation plate;
[0031] Figure 10 is a temperature distribution schematic diagram of the refrigerator door body when working.
[0032] REFERENCE SIGNS
[0033] four-edge sealing vacuum heat insulation plate 1 sealing edge 11 high-barrier film 12 drying agent 13
[0034] getter 14 core material 15 bottom shell 16 door sealing strip 2 groove 21
[0035] no-edge sealing vacuum heat insulation plate 3 upper shell 31 bottom edge 311 upper top 312
[0036] upper side edge 313 air flow guide workpiece 32 high-barrier adhesive 33
[0037] Lower shell 34 inner wall 341 lower bottom 342 lower side 343
[0038] Open hole vacuum patch 35
[0039] Box 91 door seal 92 door body 93 PU material 931 VIP plate 932 DETAILED DESCRIPTION
[0040] The utility model will be further described in connection with the drawings and specific embodiments. It needs to be explained here that the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.
[0041] The utility model discloses a VIP refrigerator door structure, like Figure 2 As shown in the preferred embodiment of the utility model, it comprises a four-edge sealed vacuum heat insulation plate 1, a door seal strip 2 and an edgeless sealed vacuum heat insulation plate 3.
[0042] As shown in the preferred embodiment of the utility model, it comprises a four-edge sealed vacuum heat insulation plate 1, a door seal strip 2 and an edgeless sealed vacuum heat insulation plate 3. Figure 3 And Figure 4 As shown in the preferred embodiment of the utility model, it comprises a four-edge sealed vacuum heat insulation plate 1, a door seal strip 2 and an edgeless sealed vacuum heat insulation plate 3.
[0043] The vertical projection area of the four-edge sealed vacuum heat insulation plate 1 and the door seal strip 2 is less than or equal to the vertical projection area of the edgeless sealed vacuum heat insulation plate 3. Since the door seal strip 2 is directly embedded and fixed to the position of the sealing edge 11 of the four-edge sealed vacuum heat insulation plate 1, there is no heat insulation effect at the position of the sealing edge 11, and the edgeless sealed vacuum heat insulation plate 3 mainly covers the outer normal temperature side of the four-edge sealed vacuum heat insulation plate 1 and the door seal strip 2, thereby providing heat insulation effect for the door seal strip 2 and the sealing edge of the four-edge sealed vacuum heat insulation plate 1. The utility model adopts a self-developed door seal strip in an embedded assembly structure, without the refrigerator door suction plastic inner container in the prior art, and has stronger structural stability, is not easy to fall off, has better heat insulation effect, and also saves the inner container mold opening cost and material cost of the refrigerator door.
[0044] Further, the width of the sealing edge 11 of the four-edge sealed vacuum heat insulation plate 1 is less than 20 mm, which can meet the requirements of the fixation of the door seal strip 2 and avoid the sealing edge 11 being too wide, thereby causing the area without heat insulation effect at the position of the sealing edge 11 to become larger.
[0045] Further, the thickness of the four-edge sealed vacuum heat insulation plate 1 is greater than the thickness of the edgeless sealed vacuum heat insulation plate 3.
[0046] As shown in the preferred embodiment of the utility model, it comprises a four-edge sealed vacuum heat insulation plate 1, a door seal strip 2 and an edgeless sealed vacuum heat insulation plate 3. Figure 5As shown, the four-side sealed vacuum insulation panel 1 includes a high-barrier film 12, a desiccant 13, a getter 14, a core material 15, and a bottom shell 16. The desiccant 13 and the getter 14 are placed in the core material 15, and the core material 15 is placed in a vacuum cavity formed by the high-barrier film 12 and the bottom shell 16. The high-barrier film 12 is used for heat sealing and adhering at the edge sealing position 11 of the bottom shell 16. The desiccant 13 is used for absorbing water vapor in the environment of the VIP to improve the barrier property. The getter 14 is used for absorbing special gases in the environment of the VIP to improve the barrier property. The core material 15 is a thermal insulation material, which provides the thermal insulation performance of the integrated door. The bottom shell 16 is integrally formed. Specifically, the bottom shell 16 is integrally formed by stamping or vacuum molding or injection molding. After surface treatment, the material of the bottom shell has high barrier property.
[0047] As shown in Figure 6 and Figure 7 The edgeless sealed vacuum insulation panel 3 includes an upper shell 31, an air flow guide workpiece 32, a getter 14, a desiccant 13, a core material 15, a high-barrier glue 33, and a lower shell 34. The air flow guide workpiece 32, the getter 14, and the desiccant 13 are built-in in the core material 15. The high-barrier glue 33 is placed between the upper shell 31 and the lower shell 34. The core material 15 is placed in a vacuum cavity formed by the upper shell 31 and the lower shell 34 being buckled together.
[0048] The upper shell 31 is used for compressing the core material 15 and is bonded with the lower shell 34 to form an edgeless sealed VIP. The air flow guide workpiece 32 is built-in in the middle of the core material 15, which is used for increasing the flow guide and improving the efficiency of hole pumping under the atmosphere. The desiccant 13 is used for absorbing water vapor in the environment of the VIP to improve the barrier property. The getter 14 is used for absorbing special gases in the environment of the VIP to improve the barrier property. The core material 15 is a thermal insulation material, which provides the thermal insulation performance of the refrigerator door. The high-barrier glue 33 is a sealing material, which is used for filling and bonding the upper shell 31 and the lower shell 34 to ensure the sealing property. Further, the upper shell 31 and the lower shell 34 are integrally formed. In this embodiment, the upper shell 31 and the lower shell 34 are integrally formed by stamping or vacuum molding or injection molding.
[0049] In this embodiment, the upper shell 31 and the lower shell 34 need to be continuously pressed during production, and then the high-barrier glue 33 is injected. The hole pumping and vacuumizing can be performed after the high-barrier glue 33 is solidified. During the process, continuous pressure is needed to avoid the separation of the upper shell 31 and the lower shell 34 caused by the expansion of the core material 15.
[0050] As shown in Figure 8 and Figure 9As shown in another embodiment of the present application, the edgeless vacuum insulation panel 3 comprises an upper shell 31, an air extraction flow guide 32, a getter 14, a desiccant 13, a core material 15, a high barrier glue 33 and a lower shell 34, the air extraction flow guide 32, the getter 14 and the desiccant 13 are built in the core material 15, the high barrier glue 33 is disposed between the upper shell 31 and the lower shell 34, the core material 15 is disposed in a vacuum cavity formed by the upper shell 31 and the lower shell 34 being buckled together, and the upper shell 31 has a bottom edge 311 covering the lower shell 34 and extending towards the inner wall 341 of the lower shell 34.
[0051] Further, the bottom edge 311 is coated with a polyethylene coating, and the polyethylene coating is heat-sealed and bonded to the lower shell 34.
[0052] Further, it further comprises a perforated vacuum extraction patch 35 for plugging the vacuum air extraction port, and the perforated vacuum extraction patch 35 covers the air extraction hole of the upper shell 31 to maintain the vacuum degree of the door body.
[0053] Further, the upper shell 31 has an upper top 312 and an upper side edge 313, and the upper side edge 313 is perpendicular to the upper top 312, and the lower shell 34 has a lower bottom 342 and a lower side edge 343, and the lower side edge 343 forms an obtuse angle with the lower bottom 342.
[0054] In this embodiment, when manufacturing, the upper shell 31 is pressed and compresses the core material 15. After the compression is completed, the upper shell 31 and the lower shell 34 are in contact with each other, and the lower shell 34 is heated to melt the polyethylene (PE) of the bottom edge 311, thereby bonding the upper shell 31 and the lower shell 34. At this time, the external pressure can be removed. Then, the high barrier glue 33 is injected, and after the high barrier glue 33 is solidified, the vacuum can be extracted from the perforated hole.
[0055] When using the present application, as shown in the figure, Figure 10 T5 is the temperature of the outside world, T6 is the temperature near the VIP, T7 is the temperature at the VIP plate and the door seal, and T8 is the temperature near the cold source. Thanks to the high heat insulation performance of the VIP plate and the full range of covering the inner cavity of the refrigerator, the heat leakage phenomenon will be significantly improved compared with the prior art, especially T7≈T8, which will significantly reduce the condensation possibility at the door plate of the refrigerator.
[0056] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application, so any changes or modifications made according to the claims and description of the present application shall be within the scope of the present application.
Claims
1. A VIP refrigerator door structure, characterized by: The four-side sealed vacuum insulation panel, the door seal and the no-side sealed vacuum insulation panel; the door seal has a groove, the edge of the four-side sealed vacuum insulation panel is embedded in the groove of the door seal, the door seal abuts against the four-side sealed vacuum insulation panel, the side of the four-side sealed vacuum insulation panel with the edge is attached to the no-side sealed vacuum insulation panel, the vertical projection of the four-side sealed vacuum insulation panel and the door seal is in the vertical projection of the no-side sealed vacuum insulation panel.
2. The VIP refrigerator door structure of claim 1, wherein: The edge width of the four-side sealed vacuum insulation panel is less than 20mm.
3. The VIP refrigerator door structure of claim 1, wherein: The four-side sealed vacuum insulation panel comprises a high barrier film, a desiccant, a getter, a core material and a bottom shell, the desiccant and the getter are in the core material, the core material is in the vacuum cavity formed by the high barrier film and the bottom shell.
4. The VIP refrigerator door structure of claim 3, wherein: The bottom shell is integrally formed.
5. The VIP refrigerator door structure of claim 1, wherein: The no-side sealed vacuum insulation panel comprises an upper shell, a getter flow guide workpiece, a getter, a desiccant, a core material, a high barrier adhesive and a lower shell, the getter flow guide workpiece, the getter and the desiccant are in the core material, the high barrier adhesive is between the upper shell and the lower shell, the core material is in the vacuum cavity formed by the upper shell and the lower shell.
6. The VIP refrigerator door structure of claim 5, wherein: The upper shell has a bottom edge, the bottom edge covers the lower shell and extends to the inner wall of the lower shell.
7. The VIP refrigerator door structure of claim 6, wherein: The bottom edge is coated with a polyethylene coating, and the polyethylene coating is heat-sealed and bonded to the lower shell.
8. The VIP refrigerator door structure of claim 5, wherein: It also includes a perforated vacuum patch, the upper shell has a getter hole, and the perforated vacuum patch covers the getter hole.
9. The VIP refrigerator door structure of claim 5, wherein: The upper shell has an upper top and an upper side, the upper side is perpendicular to the upper top, the lower shell has a lower bottom and a lower side, and the lower side is at an obtuse angle to the lower bottom.
10. The VIP refrigerator door structure of claim 5, wherein: The upper shell and the lower shell are integrally formed.