Magnetic type double-layer heat insulation door seal structure and door body assembly thereof

Abstract

The utility model discloses a magnetic attraction type double-layer heat insulation door seal structure and a door body assembly thereof, and belongs to the technical field of refrigeration equipment, the magnetic attraction type double-layer heat insulation door seal structure comprises a main air bag, one side of the main air bag is provided with an outer magnetic strip bag and an inner magnetic strip bag, and a connecting air bag is arranged between the outer magnetic strip bag and the inner magnetic strip bag; a clamping cavity is formed in the other side of the main air bag, and a second auxiliary wing edge is arranged on the right side wall of the inner magnetic strip bag; the door body assembly comprises a door seal structure, the door seal structure is arranged on the opening side of a door shell, a door lining is arranged on the inner side of the door shell, the clamping cavity is formed in a mounting groove of the door lining, a U-shaped shell is arranged on the opposite side of the door shell, and an inner container is arranged on the inner side of the U-shaped shell. The multi-magnetic-strip door seal technology is adopted, and the multi-dimensional performance is improved by optimizing the door body and the door seal structure; the sealing performance is enhanced, the refrigerating efficiency is improved, the temperature is kept stable, gap changes are adapted, the thermal resistance of the door seal is improved, the heat insulation effect is enhanced, and the energy consumption of the refrigerator is reduced.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a magnetic double-layer insulated door sealing structure and its door assembly. Background Technology

[0002] Traditional refrigerators and freezers generally use a single magnetic strip door seal as the primary sealing solution. This technology forms a sealed interface through the magnetic attraction between a magnetic rubber strip and the metal door frame. However, in practical applications, the existing single magnetic strip structure is limited by the anisotropy of the magnetic material and the cross-sectional shape. The magnetic field strength in the door seal edge area exhibits a significant gradient change, resulting in uneven distribution of contact pressure at the sealing interface. This easily creates weak areas at the door edge, leading to poor sealing. Secondly, frequent opening and closing causes mechanical stress relaxation and material creep, which accelerates the deformation of the magnetic strip structure, causing a decrease in sealing pressure. These dual effects lead to seal failure and increased energy consumption. Furthermore, due to space constraints and cost limitations, there is an urgent need for technological breakthroughs through material system innovation and structural optimization to solve the problems of sealing and insulation. Utility Model Content

[0003] The purpose of this invention is to provide a magnetic double-layer insulated door sealing structure and its door assembly, which solves the problems of uneven sealing and low-temperature failure in single magnetic strip sealing structures.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a magnetic double-layer insulated door sealing structure, including a main airbag. One side of the main airbag is provided with an outer magnetic stripe bag for installing an outer magnetic stripe and an inner magnetic stripe bag for installing an inner magnetic stripe. A connecting airbag is provided between the outer magnetic stripe bag and the inner magnetic stripe bag. A clamping chamber is provided on the other side of the main airbag. A second auxiliary wing is provided on the right side wall of the inner magnetic stripe bag, extending away from the connecting airbag.

[0006] Furthermore, a second groove is provided at the connection between the second auxiliary wing and the inner magnetic stripe.

[0007] Furthermore, a first auxiliary wing is inclinedly provided on the lower part of the right side wall of the inner magnetic stripe bag.

[0008] Furthermore, a first groove is provided at the connection between the first auxiliary wing and the inner magnetic stripe.

[0009] Furthermore, an inner support rib is provided on the inner side of the main airbag. The inner support rib is in the shape of a zigzag line, and a sealing wing is provided on the inner support rib near the zigzag point of the mounting chamber.

[0010] Furthermore, the outer wall of the card-mounting chamber away from the main airbag is provided with inverted fins, and a door sealing groove sealing fin is provided on the outer side of the inverted fins.

[0011] Furthermore, the connecting rib between the main airbag and the mounting chamber is provided with a cover wing extending to the left.

[0012] Furthermore, an auxiliary airbag is provided at the end of the second auxiliary wing that is away from the inner magnetic stripe bag.

[0013] A door assembly includes a magnetic double-layer insulated door seal structure as described above. The door seal structure is disposed on the opening side of the door shell. A door liner is disposed on the inner side of the door shell. A snap-fit ​​chamber is disposed in the mounting groove of the door liner. A U-shell is disposed on the opposite side of the door shell. An inner liner is disposed on the inner side of the U-shell. A suction element is disposed on the inner side of the inner liner at a position corresponding to the inner magnetic strip.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] The multi-magnetic strip door seal technology adopted in this utility model improves the sealing performance of the refrigerator through structural innovation. (1) The double magnetic strip arrangement increases the sealing contact area compared with the traditional single magnetic strip structure, making the door seal fit the cabinet better, effectively blocking the exchange of internal and external air, and dynamically compensating for assembly tolerances. (2) The multi-airbag composite structure forms multiple independent air chambers, improving the overall thermal resistance of the door seal. The design of the auxiliary airbag further seals the cold air leakage, achieving multi-layer heat insulation protection. (3) This magnetic double-layer insulated door seal structure can maintain a stable elastic modulus in the temperature range of -30℃ to 70℃, improves anti-aging performance, reduces the internal temperature fluctuation range, and reduces refrigerator energy consumption. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the magnetic double-layer insulated door sealing structure according to Embodiment 1 of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a door assembly of the present invention equipped with the door seal structure described in Embodiment 1;

[0019] Figure 3 This is a schematic diagram of the magnetic double-layer insulated door sealing structure according to Embodiment 2 of this utility model;

[0020] Figure 4 This is a schematic diagram of the door assembly of the present invention equipped with the door seal structure described in Embodiment 2; (unclosed state)

[0021] Figure 5This is a schematic diagram of the door assembly of the present invention equipped with the door seal structure described in Embodiment 2. (Closed state)

[0022] Explanation of reference numerals in the attached drawings: 1. Outer magnetic stripe bag; 2. Inner magnetic stripe bag; 3. Connecting air bag; 4. Main air bag; 5. First auxiliary wing edge; 5-1. First groove; 6. Inner support rib; 6-1. Sealing wing; 7. Snap-fit ​​chamber; 8. Inverted wing; 9. Door sealing groove sealing wing; 10. Cover liner long wing; 11. Second auxiliary wing edge; 11-1. Second groove; 12. Auxiliary air bag; 13. U-shell; 14. Inner liner; 15. Door shell; 16. Door liner; 17. Outer magnetic stripe; 18. Inner magnetic stripe; 19. Suction component. Detailed Implementation

[0023] Example 1

[0024] like Figure 1 As shown, a magnetic double-layer insulated door sealing structure includes a main airbag 4. One side of the main airbag 4 is connected to an outer magnetic stripe 1 for installing an outer magnetic stripe 17 and an inner magnetic stripe 2 for installing an inner magnetic stripe 18. A connecting airbag 3 connects the outer magnetic stripe 1 and the inner magnetic stripe 2. The other side of the main airbag 4 is connected to a snap-fit ​​chamber 7. A second auxiliary wing 11 extending away from the connecting airbag 3 is connected to the right side wall of the inner magnetic stripe 2. The second auxiliary wing 11 is flush with the upper edge of the inner magnetic stripe 2. When the door is closed with the cabinet, the second auxiliary wing 11 can fit tightly with the door liner 14 on the door, improving the heat insulation and sealing performance. A second groove 11-1 is provided at the connection between the second auxiliary wing 11 and the inner magnetic stripe 2.

[0025] The lower part of the right side wall of the inner magnetic strip bladder 2 is inclinedly connected to a first auxiliary wing 5, and a first groove 5-1 is provided at the connection between the first auxiliary wing 5 and the inner magnetic strip bladder 2; the first auxiliary wing 5 is used to cover the corner of the door liner 16 to improve the sealing effect.

[0026] The inner side of the main airbag 4 is connected to an inner support rib 6, which is zigzag in shape. A sealing wing 6-1 is connected to the inner support rib 6 near the bend of the mounting chamber 7.

[0027] Two inverted wings 8 are connected to the outer wall of the mounting chamber 7 on the side away from the main airbag 4. The two inverted wings 8 are symmetrically arranged on both sides of the mounting chamber 7. The bottom of the inverted wing 8 on the outer side is connected to an arc-shaped door sealing groove sealing wing 9.

[0028] A cover wing 10 extending to the left is connected to the connecting rib between the main airbag 4 and the mounting chamber 7. The cover wing 10 is used to cover the outside of the door shell 15 to improve the sealing effect of the door seal.

[0029] Based on the above, Figure 1 The door sealing structure shown in this embodiment also includes a door body component, such as... Figure 2 As shown, the door assembly includes a magnetic double-layer insulated door seal structure as described above. The door seal structure is located on the opening side of the door shell 15. A door liner 16 is installed on the inner side of the door shell 15. The snap-fit ​​chamber 7 is installed in the mounting groove of the door liner 16. The mounting groove is an inverted Ω shape. The diameter at the maximum position of the cross-section of the snap-fit ​​chamber 7 is larger than the opening diameter of the mounting groove. When the snap-fit ​​chamber 7 is inserted into the mounting groove through its own elastic deformation, it can be firmly snapped into the mounting groove. A U-shell 13 is provided on the opposite side of the door shell 15. An inner liner 14 is installed on the inner side of the U-shell 13. A suction member 19 is provided on the inner side of the inner liner 14 at a position corresponding to the inner magnetic strip 18. The suction member 19 is a magnetic strip or an iron strip. The inner liner 14 can be made of PS material. At this time, a limiting groove is designed on the back of the inner liner 14. The suction member 19 is placed in the limiting groove and fixed with tape. The suction member 19 is attracted to the inner magnetic strip 18.

[0030] Both the U-shell 13 and the door shell 15 are made of PCM material, the outer magnetic strip 17 can be attracted to the U-shell 13, and the door liner 16 is made of PS material.

[0031] Example 2

[0032] like Figure 3 As shown, this embodiment improves the door sealing structure based on embodiment one. The length of the second auxiliary wing 11 is extended, and the end of the second auxiliary wing 11 away from the inner magnetic strip 2 is connected to an auxiliary airbag 12. When the door is closed with the box, the second auxiliary wing 11 is in contact with the inner liner 14, the upper side of the auxiliary airbag 12 is arc-shaped, and the rightmost end of the auxiliary airbag 12 is in contact with the door liner 16.

[0033] Based on the above, Figure 3 The door sealing structure shown in this embodiment also includes a door body component, such as... Figure 4-5 The door assembly includes the door sealing structure described above. When the door is closed with the cabinet, the door sealing structure forms a sealing structure on the left side of the auxiliary airbag 12. The auxiliary airbag 12 is located between the inner liner 14 and the door liner 16, forming another sealing structure. Together with the first auxiliary wing 5, it blocks the cold air outlet of the refrigerator. The two sealing structures further improve the heat insulation performance.

[0034] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A magnetic double-leaf thermal door closure structure, characterized in that: The main airbag (4) includes an outer magnetic stripe bag (1) for installing an outer magnetic stripe (17) and an inner magnetic stripe bag (2) for installing an inner magnetic stripe (18) on one side of the main airbag (4). A connecting airbag (3) is provided between the outer magnetic stripe bag (1) and the inner magnetic stripe bag (2). A clamping chamber (7) is provided on the other side of the main airbag (4). A second auxiliary wing (11) extending away from the connecting airbag (3) is provided on the right side wall of the inner magnetic stripe bag (2).

2. The magnetic dual-layer thermal door seal structure of claim 1, wherein: A second groove (11-1) is provided at the connection between the second auxiliary wing edge (11) and the inner magnetic strip bag (2).

3. The magnetic dual layer thermal door closure of claim 1, wherein: The lower part of the right side wall of the inner magnetic stripe bag (2) is provided with a first auxiliary wing (5) at an angle.

4. The magnetic dual-layer thermal door seal structure of claim 3, wherein: A first groove (5-1) is provided at the connection between the first auxiliary wing edge (5) and the inner magnetic strip bag (2).

5. The magnetic dual layer thermal door closure of claim 1, wherein: The inner side of the main airbag (4) is provided with an inner support rib (6), which is in the shape of a zigzag line. A sealing wing (6-1) is provided on the inner support rib (6) near the fold point of the mounting chamber (7).

6. The magnetic dual layer thermal door closure of claim 1, wherein: The outer wall of the card chamber (7) away from the main airbag (4) is provided with an inverted wing (8), and a door sealing groove sealing wing (9) is provided on the outer side of the inverted wing (8).

7. The magnetic dual layer thermal door closure of claim 1, wherein: A cover wing (10) extending to the left is provided on the connecting rib between the main airbag (4) and the mounting chamber (7). 8.The magnetic dual-layer thermal door sealing structure of claim 1, wherein: An auxiliary airbag (12) is provided at the end of the second auxiliary wing edge (11) away from the inner magnetic strip bag (2).

9. A door assembly, characterized by: The magnetic double-layer insulated door sealing structure as described in any one of claims 1-8 is provided on the opening side of the door shell (15), a door liner (16) is provided on the inner side of the door shell (15), the snap-fit ​​chamber (7) is provided in the mounting groove of the door liner (16), a U-shell (13) is provided on the opposite side of the door shell (15), an inner liner (14) is provided on the inner side of the U-shell (13), and a suction member (19) is provided on the inner side of the inner liner (14) at a position corresponding to the inner magnetic strip (18).

Images