Door seal structure for a refrigeration appliance and refrigeration appliance

Abstract

This utility model discloses a door seal structure for refrigeration equipment and the refrigeration equipment itself. The door seal structure includes a door body with a door liner and a door seal strip. The door liner includes a reference surface and a protruding structure extending from the reference surface. The outer surface of the protruding structure includes a first inclined surface connecting to the reference surface. The door seal strip includes a door seal body. One side of the door seal body has an installation groove that mates with the protruding structure. The inner surface of the installation groove includes a second inclined surface that matches the first inclined surface. The door seal body also includes a first end face and a second end face connected to both sides of the inner surface of the installation groove and facing the reference surface. The height of the first end face is lower than that of the second end face. This utility model achieves a stable installation between the door seal strip and the door liner, with a convenient and quick insertion process. It also reduces cold leakage from the door body and improves the energy efficiency of the refrigeration equipment.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a door seal structure for refrigeration equipment and refrigeration equipment. Background Technology

[0002] Refrigeration equipment typically consists of a cabinet and a door that opens and closes. A door seal is installed between the cabinet and the door to provide cushioning and insulation. The design and performance of the door seal directly affect the freezer's sealing durability, overall power consumption, and performance, making it crucial for the entire refrigeration system.

[0003] Existing door seals are mainly fixed to the door body. For example, the detachable door seal in Chinese utility model CN205580083U is tightly fixed to the inner liner of the door by mounting feet. However, the mounting foot structure of the door seal requires the inner liner of the door to be recessed to form a mounting groove. The mounting groove lacks foaming material, resulting in discontinuity of the foaming layer. Since the thermal conductivity of the door seal is higher than that of the foaming material, this structure further aggravates the loss of cold air, making the cold air leakage in this area quite serious. This not only affects the refrigeration efficiency of the freezer but also increases energy consumption.

[0004] Furthermore, the mounting feet need to be inserted into the inner mounting groove of the door body, which involves a complex insertion process. Roller pressing is typically used, which can easily lead to stress concentration during assembly and deformation over long-term use. Additionally, the material required for the mounting feet on the door seal is substantial, increasing production costs.

[0005] Therefore, it is necessary to provide a door seal structure for refrigeration equipment and refrigeration equipment in order to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a door seal structure for refrigeration equipment and refrigeration equipment in order to solve the problems of complex installation and serious cold leakage of existing door seals.

[0007] To achieve the above objectives, this utility model provides a door sealing structure for refrigeration equipment, including a door body with a door liner and a door sealing strip. The door liner includes a reference surface and a protruding structure extending out of the reference surface. The outer surface of the protruding structure includes a first inclined surface connecting to the reference surface.

[0008] The door seal includes a door seal body, and a mounting groove is formed on one side of the door seal body to cooperate with the protruding structure. The inner surface of the mounting groove includes a second inclined surface that matches the first inclined surface. The door seal body also includes a first end face and a second end face that are connected to both sides of the inner surface of the mounting groove and face the reference surface. The height of the first end face is lower than that of the second end face.

[0009] In one embodiment of this utility model, the outer surface of the protruding structure includes a first bent surface that connects to the reference surface, and the inner surface of the mounting groove also includes a second bent surface that matches the first bent surface.

[0010] In one embodiment of the present invention, the outer surface of the protruding structure further includes a first horizontal surface, the first inclined surface and the first bent surface are respectively connected to the two sides of the first horizontal surface, and the inner surface of the mounting groove includes a second horizontal surface that mates with the first horizontal surface.

[0011] As one embodiment of this utility model, the door seal body includes a main airbag with a concave interior and auxiliary airbags disposed at both ends of the main airbag and cooperating with the reference surface. The concave end face of the main airbag and the side face of the auxiliary airbag are connected to each other to form the inner surface of the mounting groove.

[0012] In one embodiment of the present invention, the door liner further includes a support protrusion extending out of the reference surface, and a first limiting groove is formed between the support protrusion and the protruding structure. The auxiliary airbag includes a first snap-fit ​​airbag that engages with the first limiting groove.

[0013] In one embodiment of this utility model, the outer surface of the main airbag includes a concave surface connecting to the first buckle airbag. The concave surface matches the outer surface of the supporting protrusion.

[0014] In one embodiment of this utility model, the first bending surface extends in a stepped shape, and a second limiting groove is formed between the first bending surface and the reference surface. The auxiliary airbag includes a second snap-fit ​​airbag that engages with the second limiting groove.

[0015] In one embodiment of this utility model, the main airbag is provided with a support partition strip, which divides the main airbag into multiple sub-airbags.

[0016] In one embodiment of this utility model, the door seal further includes a sealing wing, which includes a first wing disposed on the outside of the main airbag, the first wing abutting against the outer surface of the support protrusion on the side opposite to the first buckle airbag; the sealing wing further includes a second wing disposed on the outside of the auxiliary airbag, the second wing abutting against the reference surface near the outside of the door body.

[0017] To achieve the above objectives, the present invention also provides a refrigeration device, including a box defining a storage space, and a door sealing structure for the refrigeration device as described in any of the above claims, wherein the door is sealed to the box by the door sealing strip.

[0018] The beneficial effects of this utility model are as follows: By setting a raised structure on the door liner and forming a corresponding mounting groove on one side of the door seal body, a continuous and complete insulation layer can be formed in the door liner, reducing the possibility of cold leakage from the door, improving refrigeration efficiency and reducing energy consumption, and reducing the amount of material used in the door seal body, thus lowering production costs. Simultaneously, the first inclined surface and the second inclined surface are matched and arranged, and the height of the first end face is lower than that of the second end face, allowing the door seal strip to slide smoothly laterally along the raised structure, enabling the mounting groove to be fastened and fixed around the raised structure. This reduces assembly difficulty and the risk of assembly stress concentration. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the refrigeration equipment provided in a specific embodiment of this utility model;

[0020] Figure 2 yes Figure 1 Enlarged view of the door seal structure of the refrigeration equipment;

[0021] Figure 3 yes Figure 2 Exploded structural diagram of the door liner and door seal strip in the middle door sealing structure;

[0022] Figure 4 yes Figure 3 A three-dimensional structural diagram of the central door seal;

[0023] Figure 5 yes Figure 4 Cross-sectional view of the central door seal. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Please refer to them. Figures 1 to 5 The figure shown is a preferred embodiment of the present invention.

[0025] It should be understood that, unless otherwise expressly specified and limited, in this application, the terms "upper," "lower," "front," "rear," "left," "right," etc., indicate the orientation or positional relationship based on the illustrations and are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, and at least two.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "set", "connect", "connect", "fixed" and other such terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part.

[0028] This utility model provides a door seal structure 10 for refrigeration equipment and a refrigeration equipment 100. Figures 1 to 5 A preferred embodiment according to the present invention is shown.

[0029] like Figures 1 to 3 As shown, the present invention provides a refrigeration device 100, which includes a box 20 defining a storage space and a door sealing structure 10 for the refrigeration device 100.

[0030] In this embodiment, the refrigeration equipment 100 is described using a freezer as an example. The freezer body 20 has an opening at the top, and a door sealing structure 10 is provided at the opening of the body 20 to seal the opening. It should be noted that the refrigeration equipment 100 can also be a refrigerator, a refrigerated display case, or other refrigeration equipment 100 that requires a door sealing structure 10.

[0031] Therefore, in particular, this utility model also provides a door sealing structure 10 for a refrigeration device 100. The door sealing structure 10 includes a door body 1 with a door liner 11 and a door sealing strip 2. The door body 1 can open or close the opening of the cabinet 20. The door sealing strip 2 is provided on the side of the door body 1 facing the cabinet 20, so as to seal with the edge of the cabinet 20 when the door body 1 is closed to prevent cold air leakage.

[0032] The door liner 11 includes a reference surface 12 and a protruding structure 13 extending out of the reference surface 12. The door seal 2 includes a door seal body 21, and a mounting groove 22 that mates with the protruding structure 13 is formed on one side of the door seal body 21.

[0033] This invention provides a raised structure 13 on the door liner 11 and forms a corresponding mounting groove 22 on one side of the door seal body 21, allowing foamed material to fill into the raised structure 13 of the door liner 11, thereby forming a continuous and complete insulation layer in the door liner 11. This effectively solves the problem of missing foamed material and discontinuous insulation layer in the contact area between the door body 1 and the door seal strip 2 and its surrounding area caused by the groove on the door liner 11 in the existing refrigeration equipment 100, reduces the possibility of cold leakage of the door body 1, improves the refrigeration efficiency of the refrigeration equipment 100, and reduces energy consumption.

[0034] When the door seal 2 is installed on the door body 1, the door seal 2 can be fastened and fixed around the protruding structure 13. The inner surface of the mounting groove 22 fits against the outer surface of the protruding structure 13. The matching arrangement of the protruding structure 13 and the mounting groove 22 makes it easier to align and fix the door seal 2 on the door liner 11 during the installation process.

[0035] The outer surface of the protrusion structure 13 includes a first inclined surface 131 that connects to the reference surface 12. The inner surface of the mounting groove 22 includes a second inclined surface 221 that matches the first inclined surface 131. The door seal body 21 also includes a first end face 23 and a second end face 24 that are connected to both sides of the inner surface of the mounting groove 22 and face the reference surface 12. The height of the first end face 23 is lower than that of the second end face 24.

[0036] The first inclined surface 131 and the second inclined surface 221 are matched and set together, which further optimizes the assembly process. The first inclined surface 131 can guide the door seal 2 to slide smoothly along the raised structure 13 to the preset snap-fit ​​position, reduce the insertion resistance and improve the installation efficiency.

[0037] In addition, the door seal body 21 includes a first end face 23 and a second end face 24 on both sides of the inner surface of the mounting groove 22. The first end face 23 and the second end face 24 are both facing the reference surface 12. When the seal mounting groove 22 is fastened and fixed in place around the protruding structure 13, the first end face 23 and the second end face 24 can be tightly fitted with the reference surfaces 12 on both sides of the protruding structure 13, which further enhances the sealing performance between the door seal 2 and the door liner 11.

[0038] In this embodiment, the first end face 23 is disposed on the side of the mounting groove 22 near the inside of the door body 1, that is, on the left side of the mounting groove 22 as shown in the figure; the second end face 24 is disposed on the side of the mounting groove 22 near the outside of the door body 1, that is, on the right side of the mounting groove 22 as shown in the figure.

[0039] The height of the first end face 23 is lower than that of the second end face 24. This height difference facilitates the lateral sliding installation and removal of the door seal 2 along the raised structure 13, and ensures that the door seal 2 can only be slidably assembled in one direction. It is only allowed to slide in from the lower height side, i.e., the side of the first end face 23, and form a stable clamping on the higher height side, i.e., the side of the second end face 24. This effectively prevents reverse misinstallation, avoids the decrease in sealing performance due to improper installation, and ensures the accuracy and reliability of the installation of the door seal 2.

[0040] Meanwhile, the height difference setting can also optimize the energy efficiency of the refrigeration equipment 100. Since the first end face 23 is close to the inside of the door 1, it is closer to the refrigeration area inside the cabinet 20 in the refrigeration equipment 100. The lower height of the first end face 23 can reduce the path of cold air leakage and reduce the leakage of cold energy between the door seal 2 and the door liner 11.

[0041] The second end face 24 is higher, which increases the heat dissipation area on the outer side of the door seal 2, effectively disperses the cold accumulation on the door seal 2, and reduces the condensation problem caused by local overcooling.

[0042] The outer surface of the protrusion structure 13 also includes a first bending surface 132 that connects to the reference surface 12, and the inner surface of the mounting groove 22 also includes a second bending surface 222 that matches the first bending surface 132.

[0043] When the door seal 2 is installed onto the door body 1, the first bending surface 132 and the second bending surface 222 are matched and can fit tightly against the first bending surface 132, locking each other in place. This effectively prevents the door seal 2 from loosening or falling off after installation. This not only enhances the connection strength between the raised structure 13 and the mounting groove 22, but also ensures the stability and accuracy of the door seal 2 during installation. By setting a reasonable bending angle, stress concentration during installation can also be distributed, improving the durability of the door seal 2 and the entire door body 1 structure.

[0044] The outer surface of the protruding structure 13 also includes a first horizontal surface 133, the first inclined surface 131 and the first bent surface 132 are respectively connected to the two sides of the first horizontal surface 133, and the inner surface of the mounting groove 22 includes a second horizontal surface 223 that cooperates with the first horizontal surface 133.

[0045] This allows a stable contact surface to be formed between the first horizontal surface 133 and the second horizontal surface 223 after the door seal 2 is installed on the door body 1, improving the stability of the installation, enhancing the sealing performance between the door seal 2 and the door body 1, and improving the energy efficiency and heat preservation effect of the refrigeration equipment 100.

[0046] Meanwhile, the connection between the first inclined surface 131 and the first horizontal surface 133 allows the door seal 2 to slide and assemble more smoothly and accurately during installation, thus optimizing the installation process.

[0047] During installation, the operator can first bring the first end face 23 of the door seal body 21 into contact with the outer surface of the protruding structure 13 of the door body 1, and then push it inward along the first horizontal plane 133 and the first inclined plane 131. Due to the setting of the first inclined plane 131, the door seal strip 2 can automatically adjust its position during installation until the first end face 23 is completely in contact with the reference plane 12.

[0048] At this point, the operator can further confirm that the mounting groove 22 and the protruding structure 13 are fully engaged, the second horizontal surface 223 is tightly fitted with the first horizontal surface 133, and that the second bending surface 222 is tightly locked with the first bending surface 132. The installation process is not only convenient but also significantly improves efficiency and accuracy. Operators can quickly complete the assembly of the door seal 2 without tedious adjustments, effectively reducing installation difficulty and saving installation time.

[0049] Reference Figures 3 to 5 The door seal body 21 includes a recessed main airbag 25 and auxiliary airbags 26 disposed at both ends of the main airbag 25 and cooperating with the reference surface 12. The recessed end face of the main airbag 25 and the side face of the auxiliary airbag 26 are connected to each other to form the inner surface of the mounting groove 22.

[0050] The main airbag 25 is recessed and matches the protruding structure 13 of the door body 1. The auxiliary airbag 26 is located at both ends of the main airbag 25 and fits tightly with the first inclined surface 131, the first bending surface 132 and the reference surfaces 12 on both sides of the protruding structure 13, ensuring a seamless connection between the door seal 2 and the door body 1 and improving the sealing performance.

[0051] Among them, the end face of the auxiliary airbag 26 facing the reference surface 12 is the first end face 23 and the second end face 24. The first end face 23 and the second end face 24 match the shape of the reference surface 12, ensuring that the door seal 2 can tightly wrap the edge of the door body 1 after installation, effectively preventing cold air leakage and enhancing the heat preservation performance of the refrigeration equipment 100.

[0052] The main airbag 25 acts as a buffer when the door 1 closes the housing 20, effectively reducing the impact force when the door 1 closes and preventing damage or noise caused by excessive closing force. The side of the main airbag 25 opposite to the door liner 11 contacts the end face of the housing 20 to achieve a seal. In addition, the main airbag 25 can also provide necessary support to maintain the stability and balance of the door 1.

[0053] The door liner 11 also includes a support protrusion 14 that protrudes from the reference surface 12, and a first limiting groove 15 is formed between the support protrusion 14 and the protruding structure 13. The auxiliary airbag 26 includes a first snap-fit ​​airbag 261 that engages with the first limiting groove 15.

[0054] The first limiting groove 15 formed between the supporting protrusion 14 and the protruding structure 13 provides a more accurate fixing position for the first snap-fit ​​airbag 261, enhancing the structural stability of the door seal 2 and making it less prone to falling off. The supporting protrusion 14 can also provide a certain supporting force, so that the door seal 2 can be more firmly attached to the door body 1 after installation.

[0055] Meanwhile, the snap-fit ​​setting between the first buckle airbag 261 and the first limiting groove 15 simplifies the installation process, making it easier and more accurate to install the door seal 2 in place, and further ensuring the tight fit between the door seal 2 and the door body 1, thereby improving the overall sealing effect.

[0056] The outer surface of the main airbag 25 includes a concave surface 251 that connects to the first snap-fit ​​airbag 261. The concave surface 251 matches the outer surface of the support protrusion 14. This increases the contact area between the main airbag 25 and the support protrusion 14, improves the tightness of their fit, and makes the door seal 2 less prone to displacement or loosening during use. At the same time, the concave surface 251 allows the first snap-fit ​​airbag 261 to be more smoothly inserted into the first limiting groove 15 during installation, avoiding interference, reducing installation resistance, and improving installation efficiency.

[0057] The first bending surface 132 extends in a stepped shape, and a second limiting groove 16 is formed between the first bending surface 132 and the reference surface 12. The auxiliary airbag 26 includes a second snap-fit ​​airbag 262 that engages with the second limiting groove 16.

[0058] The engagement between the second limiting groove 16 and the second snap-fit ​​airbag 262 provides another layer of protection for the fixation of the door seal 2. The stepped extension of the first bending surface 132 allows the second snap-fit ​​airbag 262 to be more firmly engaged in the second limiting groove 16, making it less likely to fall off due to external force.

[0059] Meanwhile, the cooperation between the second buckle airbag 262 and the second limiting groove 16 further improves the sealing performance between the door seal 2 and the door body 1, ensuring that the refrigeration equipment 100 can effectively isolate the flow of internal and external air during operation, thereby achieving better heat preservation and energy saving effects.

[0060] The first bending surface 132 is stepped, specifically including a first vertical section 1321, an inclined section 1322, and a second vertical section 1323; a portion of the concave end face of the main airbag 25 is connected to the side of the second buckle airbag 262 to form the second bending surface 222. The second bending surface 222 corresponds to the stepped structure of the first bending surface 132 to ensure the seal between the door seal 2 and the door body 1.

[0061] The first vertical segment 1321 has a large contact area with the main body of the seal, which can provide stronger structural support and help stretch and expand the inner surface of the mounting groove 22, so that the door seal 2 can be stably installed on the door body 1. The design of the inclined segment 1322 helps to guide the second buckle airbag 262 to smoothly snap into the second limiting groove 16. The inclined segment 1322 extends inclinedly towards the inside of the door body 1, which can provide a certain support force for the second buckle airbag 262 and further enhance the stability of the snap-fit. The second vertical segment 1323, as the end of the first bending surface 132, that is, the bottom of the second limiting groove 16, ensures that the second buckle airbag 262 is snapped in and is difficult to detach on its own, thereby maintaining a tight fit between the door seal 2 and the door body 1.

[0062] The main airbag 25 is equipped with a supporting partition strip 252, which divides the main airbag 25 into multiple sub-airbags. The supporting partition strip 252 enhances the structural strength of the main airbag 25 and allows each sub-airbag to deform accordingly to adapt to different parts of the door body 1 and the box body 20, thereby improving the sealing performance of the door sealing structure 10. At the same time, the supporting partition strip 252 is equipped with a guide channel to facilitate the uniform distribution of gas within the main airbag 25 and achieve dynamic pressure balance.

[0063] In this embodiment, the support partition 252 is S-shaped. The S-shaped support partition 252 can flexibly deform elastically when the door 1 is opened and closed, providing a better buffering effect, reducing noise and vibration, and improving the user experience.

[0064] The first snap-fit ​​airbag 261 and the second snap-fit ​​airbag 262 are also provided with a first partition strip 263 and a second partition strip 264, respectively, to enhance the structural strength of the first snap-fit ​​airbag 261 and the second snap-fit ​​airbag 262, improve the structural stability, and prevent the first snap-fit ​​airbag 261 and the second snap-fit ​​airbag 262 from deforming when they are respectively inserted into the first limiting groove 15 and the second limiting groove 16, which would affect the snap-fit ​​effect and sealing performance.

[0065] The door seal 2 also includes a sealing wing 27, which includes a first wing 271 located on the outside of the main airbag 25. The first wing 271 abuts against the outer surface of the support protrusion 14 on the side opposite to the first buckle airbag 261, thus providing auxiliary sealing treatment to the inside of the door liner 11 and effectively preventing cold air leakage.

[0066] Meanwhile, the first wing edge 271 and the first buckle airbag 261 work together to clamp the two sides of the support protrusion 14, which can improve the stability and sealing performance of the overall door seal 2 and ensure that there will be no loosening or cold leakage during use.

[0067] The sealing wing 27 also includes a second wing 272 located outside the auxiliary airbag 26. The second wing 272 abuts against the reference surface 12 near the outside of the door body 1, which can seal the outside of the door body 1, prevent cold air from being transmitted and leaked along the door liner 11, effectively block the intrusion of external hot air or moisture, and improve the sealing performance of the door seal 2.

[0068] The sealing wing 27 also includes a third wing 273 located on the side of the main airbag 25 facing the box 20. The third wing 273 abuts against the end face of the box 20, which can enhance the sealing effect between the door seal 2 and the box 20, effectively prevent cold air leakage, and improve the energy efficiency of the refrigeration equipment 100.

[0069] In summary, by utilizing the door seal structure 10 and refrigeration equipment 100 of this utility model, a continuous and complete insulation layer can be formed in the door liner 11 by setting a protruding structure 13 on the door liner and forming a corresponding mounting groove 22 on one side of the door seal body 21. This reduces the possibility of cold leakage in the door body 1, improves refrigeration efficiency, reduces energy consumption, and reduces the amount of material used in the door seal body 21, thus lowering production costs. Simultaneously, the first inclined surface 131 and the second inclined surface 221 are matched and arranged, and the height of the first end face 23 is lower than that of the second end face 24. Therefore, the door seal strip 2 can smoothly slide laterally along the protruding structure 13, allowing the mounting groove 22 to be fastened and fixed around the protruding structure 13. This reduces assembly difficulty and the risk of assembly stress concentration.

[0070] In the embodiments provided by this utility model, it should be understood that the above-described implementation of the structure is merely illustrative. For example, the division of the modules is merely a logical functional division. In actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another device, or some features may be ignored or not executed.

[0071] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A door sealing structure for refrigeration equipment, comprising a door body with a door liner and a door seal, characterized in that, The door liner includes a reference surface and a protruding structure extending out of the reference surface, the outer surface of the protruding structure including a first inclined surface connecting to the reference surface; The door seal includes a door seal body, and a mounting groove is formed on one side of the door seal body to cooperate with the protruding structure. The inner surface of the mounting groove includes a second inclined surface that matches the first inclined surface. The door seal body also includes a first end face and a second end face that are connected to both sides of the inner surface of the mounting groove and face the reference surface. The height of the first end face is lower than that of the second end face.

2. The door seal structure for refrigeration equipment according to claim 1, characterized in that, The outer surface of the protrusion structure includes a first bent surface that connects to the reference surface, and the inner surface of the mounting groove also includes a second bent surface that matches the first bent surface.

3. The door seal structure for refrigeration equipment according to claim 2, characterized in that, The outer surface of the protruding structure also includes a first horizontal surface, the first inclined surface and the first bent surface are respectively connected to the two sides of the first horizontal surface, and the inner surface of the mounting groove includes a second horizontal surface that mates with the first horizontal surface.

4. The door seal structure for refrigeration equipment according to claim 2 or 3, characterized in that, The door seal body includes a recessed main airbag and auxiliary airbags located at both ends of the main airbag and cooperating with the reference surface. The recessed end face of the main airbag and the side face of the auxiliary airbag are connected to each other to form the inner surface of the mounting groove.

5. The door seal structure for refrigeration equipment according to claim 4, characterized in that, The door liner also includes a support protrusion extending out of the reference surface, and a first limiting groove is formed between the support protrusion and the protruding structure. The auxiliary airbag includes a first snap-fit ​​airbag that engages with the first limiting groove.

6. The door seal structure for refrigeration equipment according to claim 5, characterized in that, The outer surface of the main airbag includes a concave surface that connects to the first buckle airbag, and the concave surface matches the outer surface of the support protrusion.

7. The door seal structure for refrigeration equipment according to any one of claims 4-6, characterized in that, The first bending surface extends in a stepped shape, and a second limiting groove is formed between the first bending surface and the reference surface. The auxiliary airbag includes a second snap-fit ​​airbag that engages with the second limiting groove.

8. The door seal structure for refrigeration equipment according to claim 4, characterized in that, The main airbag is provided with a support partition strip, which divides the main airbag into multiple sub-airbags.

9. The door seal structure for refrigeration equipment according to claim 5, characterized in that, The door seal also includes a sealing wing, which includes a first wing located outside the main airbag, the first wing abutting against the outer surface of the support protrusion on the side opposite to the first buckle airbag; the sealing wing also includes a second wing located outside the auxiliary airbag, the second wing abutting against the reference surface near the outside of the door body.

10. A refrigeration device, comprising a housing defining a storage space, characterized in that, It also includes a door sealing structure for refrigeration equipment as described in any one of claims 1-9, wherein the door body is sealed to the housing body by the door sealing strip.

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