Refrigerator door sealing structure and refrigerator

Abstract

The utility model provides a kind of refrigerator door sealing structure and refrigerator, wherein the refrigerator door sealing structure includes door seal strip and magnetic attraction component, door seal strip is fixedly arranged on the side of door body facing the opening of box;Magnetic attraction component is arranged inside door seal strip, and magnetic attraction component has differentiating magnetic flux density, to match the stress distribution of door body;The utility model sets up magnetic attraction component with differentiating magnetic flux density inside door seal strip, so that it matches the stress distribution of door body, to optimize the sealing performance between door seal strip and box, effectively improve the phenomenon of leakage cold.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration equipment, and more specifically, it relates to a refrigerator door sealing structure and a refrigerator. Background Technology

[0002] The insulation technology of a refrigerator has a decisive impact on its energy efficiency. With continuous upgrades in cabinet foaming technology, cabinet insulation technology has also improved significantly. Furthermore, the application of vacuum insulation panels (VIP panels) has brought about a revolutionary change in cabinet insulation. However, the door seal technology between the door and the cabinet mainly relies on the optimization of the door seal's cross-sectional structure and the improvement of its materials. Despite this, the door seal is prone to deformation after long-term stress, leading to localized cold leakage. Therefore, how to effectively improve the sealing performance between the door and the cabinet has become a key issue that urgently needs to be addressed in the industry. Utility Model Content

[0003] The purpose of this invention is to propose a refrigerator door sealing structure and a refrigerator to solve the problem of cold leakage in existing refrigerators.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] Firstly, a refrigerator door sealing structure is proposed, including:

[0006] Door seal is fixedly installed on the side of the door facing the opening of the cabinet;

[0007] A magnetic attraction component is disposed inside the door seal, and the magnetic attraction component has a differentiated magnetic flux density to match the stress distribution of the door body.

[0008] Furthermore, the magnetic attraction component includes:

[0009] The first magnetic attraction area is located at the four corners of the door.

[0010] The second magnetic attraction area is located on the hinge side of the door body near the hinge device, and not at the corner. The magnetic flux density of the second magnetic attraction area is less than that of the second magnetic attraction area.

[0011] The third magnetic attraction area is located on the free side of the door body other than the hinge side, and is not at the corner. The magnetic flux density of the third magnetic attraction area is less than that of the second magnetic attraction area.

[0012] Furthermore, the first magnetic attraction region, the second magnetic attraction region, and the third magnetic attraction region are integrated and connected through a sintering process.

[0013] Furthermore, it also includes:

[0014] The flexible pre-tightening assembly consists of a snap-fit ​​head and a snap-fit ​​seat that interlock with each other. The snap-fit ​​head is located at the end of the door body away from the hinge device, and the snap-fit ​​seat is located in the housing body and corresponds to the snap-fit ​​head.

[0015] Furthermore, the card holder is rotatably mounted on the housing.

[0016] Furthermore, it also includes:

[0017] An airbag compensation component is disposed on the door body. When the airbag compensation component is inflated, it pushes against the door seal so that the door seal is tightly attached to the opening of the box body.

[0018] Furthermore, the airbag compensation component includes:

[0019] An airbag is disposed inside the door seal and adjacent to the magnetic attraction component;

[0020] An air pump is installed on the end cover of the door body;

[0021] An air tube connects the airbag to the air pump.

[0022] Furthermore, the airbag compensation assembly also includes:

[0023] A pressure sensor is located on the side of the door seal near the enclosure.

[0024] Furthermore, the pressure sensor is a MEMS sensor.

[0025] Secondly, a refrigerator is proposed, including a cabinet, a door, and a hinge device. The hinge device is fixedly installed on the side of the cabinet where the door is located. The door is rotatably connected to the cabinet through the hinge device. The refrigerator also includes the refrigerator door sealing structure described above.

[0026] Thirdly, a method for preventing air leakage in a refrigerator is proposed, wherein the refrigerator includes the refrigerator door sealing structure described above, comprising:

[0027] Obtain the pressure value measured by the pressure sensor;

[0028] The actual gap between the door seal and the housing is determined based on the pressure value.

[0029] When the actual gap is greater than the preset gap, the air pump is turned on to inflate the airbag.

[0030] Compared with the prior art, the beneficial effects of the refrigerator door sealing structure and the refrigerator proposed in this utility model are as follows:

[0031] This invention optimizes the sealing performance between the door seal and the enclosure by incorporating a magnetically attracted component with differentiated magnetic flux density inside the door seal, matching it with the stress distribution of the door body, thereby effectively improving cold leakage. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the cross-sectional structure of the door seal of this utility model;

[0034] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the middle EE;

[0035] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0036] Figure 4 This is a schematic diagram of the cross-sectional structure of the refrigerator of this utility model;

[0037] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0038] Figure 6 for Figure 4 Enlarged structural diagram at point C;

[0039] The main markings in the attached figures are as follows:

[0040] 100. Door body;

[0041] 200. Box body;

[0042] 1. Door seal;

[0043] 2. Magnetic suction components;

[0044] 21. First magnetic attraction area;

[0045] 22. Second magnetic attraction area;

[0046] 23. Third magnetic attraction area;

[0047] 3. Flexible pre-tightening components;

[0048] 31. Card head;

[0049] 32. Booth seating;

[0050] 4. Airbag compensation component;

[0051] 41. Airbag;

[0052] 42. Air pump;

[0053] 43. Trachea;

[0054] 44. Pressure sensor. Detailed Implementation

[0055] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0056] The insulation technology of a refrigerator has a decisive impact on its energy efficiency. With the continuous upgrading of cabinet foaming technology, the insulation performance of the cabinet has also been significantly improved. In particular, the application of VIP panels has brought about a revolutionary change in cabinet insulation. However, the door seal technology between the door and the cabinet is mainly achieved through the optimization of the door seal cross-sectional structure and the improvement of materials.

[0057] The existing technology has the following main drawbacks:

[0058] 1. Uneven sealing problem: Traditional single magnetic strip seals are prone to deformation after the door is subjected to long-term stress, leading to localized cold leakage. At the same time, the shrinkage of the foam layer of the enclosure will make the door seal bonding surface uneven, which will further increase cold leakage and increase energy consumption.

[0059] 2. Door seal material limitations: Under high and low temperature environments, the door seal material ages faster and loses elasticity, resulting in poor adhesion, increased cold leakage, and even condensation on the cabinet or door, further increasing energy consumption.

[0060] In addition, while using an auxiliary electromagnet to enhance the attraction has some effect, it also has the problems of high power consumption and circuit failure.

[0061] To enhance the sealing performance of refrigerator doors, this utility model proposes a refrigerator door sealing structure and a refrigerator.

[0062] Please refer to the following: Figures 1 to 6 The refrigerator door sealing structure proposed in this utility model includes:

[0063] Door seal 1 is fixedly installed on the side of the door 100 facing the opening of the box 200;

[0064] The magnetic attraction component 2 is disposed inside the door seal 1. The magnetic attraction component 2 has a differentiated magnetic flux density to match the stress distribution of the door body 100.

[0065] This invention provides a magnetic attraction component 2 inside the door seal 1. The magnetic attraction component 2 has a differentiated magnetic flux density to match the stress distribution of the door body 100. This design can effectively improve the problem of uneven force distribution in traditional single magnetic strip seals and avoid local cold leakage caused by deformation of the door body 100 after long-term stress.

[0066] Furthermore, the differentiated magnetic flux density can be precisely matched according to the stress conditions of different parts of the door 100, making the door seal 1 and the foam layer of the box 200 fit more tightly and smoothly, greatly reducing the cold leakage caused by the shrinkage of the foam layer of the box 200, thereby reducing energy consumption.

[0067] At the same time, this design can also alleviate problems such as poor adhesion, increased cold leakage, and condensation on the cabinet 200 or door 100 caused by accelerated aging and decreased elasticity of the door seal material under high and low temperature environments, thus improving the overall sealing performance of the refrigerator door.

[0068] Understandably, the magnetic flux density of the magnetic attraction component 2 can be flexibly adjusted according to actual application requirements. For example, in practical applications, the door seal 1 has a frame-like structure and is used to tightly fit the periphery of the opening of the box 200. Based on the stress distribution of the door body 100, the door seal 1 bears the greatest stress in the area corresponding to the corner of the door body 100, the second greatest stress in the area corresponding to the hinge side of the door body 100, and the least stress in the area corresponding to the free side of the door body 100.

[0069] In this regard, the magnetic attraction component 2 includes a first magnetic attraction region 21, a second magnetic attraction region 22, and a third magnetic attraction region 23.

[0070] The first magnetic attraction area 21 is located at the four corners of the door body 100; the second magnetic attraction area 22 is located on the hinge side of the door body 100 near the hinge device, but not at the corners, and the magnetic flux density of the second magnetic attraction area is less than that of the second magnetic attraction area 22; the third magnetic attraction area 23 is located on the free side of the door body 100 other than the hinge side, but not at the corners, and the magnetic flux density of the third magnetic attraction area 23 is less than that of the second magnetic attraction area 22.

[0071] This invention optimizes the sealing performance of the refrigerator door by setting up three magnetic attraction areas with different magnetic flux densities in the magnetic attraction component 2.

[0072] Among them, the first magnetic attraction area 21, corresponding to the corner of the door 100, has the largest magnetic flux density, which effectively compensates for the stress concentration area and prevents cold leakage caused by insufficient attraction; the second magnetic attraction area 22, corresponding to the hinge side of the door 100, has a medium magnetic flux density, which provides high attraction force and prevents the door 100 from sagging; the third magnetic attraction area 23, corresponding to the free side of the door 100, has a lower magnetic flux density, which avoids deformation caused by excessive compression.

[0073] This structure not only precisely adapts to the stress distribution characteristics of various parts of the door 100, significantly improving sealing performance, but also reduces cold air leakage and lowers refrigerator energy consumption. Furthermore, the rational configuration of magnetic flux density in different magnetic attraction areas helps extend the lifespan of the refrigerator door seal 1, reducing replacement frequency and saving users operating costs.

[0074] In addition, the first magnetic attraction region 21, the second magnetic attraction region 22 and the third magnetic attraction region 23 are integrated and connected through a sintering process.

[0075] Understandably, the different magnetic flux densities of the magnetic attraction component 2 are primarily achieved through a sintering process. In this case, although the magnetic flux densities of each magnetic attraction region differ, they are not independent magnetic attraction regions. Furthermore, these different magnetic attraction regions are integrally connected through the sintering process, making the magnetic attraction component 2 a single unit.

[0076] This invention integrates the first magnetic attraction region 21, the second magnetic attraction region 22, and the third magnetic attraction region 23 through a sintering process. This not only improves the overall structural strength of the magnetic attraction component 2, ensuring that it is not prone to breakage or separation during long-term use, but also ensures the continuity and stability of the magnetic field between the magnetic attraction regions, thereby further optimizing the sealing effect of the refrigerator door.

[0077] like Figure 4 , Figure 5 As shown, the refrigerator door sealing structure proposed in this utility model further includes: a flexible pre-tightening component 3, which consists of a snap-fit ​​head 31 and a snap-fit ​​seat 32. The snap-fit ​​head 31 is located at the end of the door body 100 away from the hinge device, and the snap-fit ​​seat 32 is located on the cabinet body 200 and corresponds to the snap-fit ​​head 31. Both the snap-fit ​​head 31 and the snap-fit ​​seat 32 can be made of elastic material.

[0078] It is understandable that in the prior art, after the door 100 is closed, it remains parallel to the housing 200, and there is a gap between the end of the door 100 away from the hinge device (i.e., the far end) and the housing 200.

[0079] This invention utilizes a flexible pre-tightening component 3, where a locking head 31 is installed at the end of the door 100 furthest from the hinge device, and a locking seat 32 is positioned in the housing 200 corresponding to the locking head 31. When the door 100 is closed, the locking seat 32 and the locking head 31 engage tightly, causing the distal end of the door 100 to tilt at a certain angle towards the housing 200, thereby reducing the gap between the door 100 and the housing 200 (e.g., 3-5 mm, i.e., the compression of the door seal 1). In this way, the flexible pre-tightening component 3 provides pre-tightening force to the distal end of the door 100, giving the door seal 1 a certain amount of pre-compression, thus effectively improving the sealing performance of the door seal 1.

[0080] In practical applications, a proximal pre-tightening mechanism can be installed at the end of the door body 100 near the hinge device (i.e., the proximal end). This proximal pre-tightening mechanism can effectively meet the pre-tightening requirements of the proximal end of the door body 100, while the flexible pre-tightening component 3 can effectively meet the pre-tightening requirements of the distal end of the door body 100. By providing pre-compression to the door seal 1 from the proximal and distal ends of the door body 100 respectively, the sealing effect of the door seal 1 can be effectively improved.

[0081] Furthermore, the card holder 32 is rotatably mounted on the housing 200. The card holder 32 can be rotatably mounted and fixed on the housing 200 using a universal swivel joint. In this way, the card holder 32 can deflect within a certain angle range, making it easier for the card head 31 to be inserted into the card holder 32, realizing a flexible locking function, providing pre-compression of the door seal 1, thereby improving the sealing effect of the door seal 1.

[0082] like Figure 3 , Figure 4 , Figure 6 As shown, the refrigerator door sealing structure proposed in this utility model also includes: an airbag compensation component 4, which is disposed on the door body 100. When the airbag compensation component 4 is in the inflated state, it pushes against the door seal 1 so that the door seal 1 is tightly attached to the opening of the cabinet body 200.

[0083] This invention utilizes an airbag compensation component 4, where an inflated airbag 41 pushes against the door seal 1, ensuring it fits tightly against the opening of the refrigerator body 200. The airbag compensation component 4 can be adjusted in inflation to precisely control the pushing force against the door seal 1. This flexible adjustment mechanism not only ensures a tight fit between the door seal 1 and the opening of the refrigerator body 200 but also effectively adapts to refrigerator doors of different sizes and shapes, significantly improving the versatility and practicality of the refrigerator door sealing structure. Furthermore, the airbag compensation component 4 expands smoothly and controllably during inflation, preventing damage to the door seal 1 or the refrigerator body 200 due to over-inflation, further guaranteeing the stability and durability of the refrigerator door sealing structure.

[0084] Specifically, the airbag compensation component 4 includes at least an airbag 41, an air pump 42, and an air tube 43. The airbag 41 is located inside the door seal 1 and adjacent to the magnetic component 2. The air pump 42 is located on the end cap of the door body 100. The air tube 43 connects the airbag 41 and the air pump 42. Thus, by operating the air pump 42, gas can be injected into the airbag 41 through the air tube 43, causing the airbag 41 to expand and push against the door seal 1, ensuring a tight seal at the opening of the housing 200. Furthermore, the air pump 42 can precisely control the inflation volume according to actual needs, thereby flexibly adjusting the expansion degree of the airbag 41, achieving precise control over the pushing force of the door seal 1, and ensuring a good sealing effect under different working conditions.

[0085] In addition, the airbag compensation assembly 4 also includes a pressure sensor 44, which is located on the side of the door seal 1 near the housing 200. The pressure sensor 44 is a MEMS sensor.

[0086] In this way, the pressure sensor 44 can sense the pressure changes between the door seal 1 and the refrigerator body 200 in real time and convert the pressure signal into an electrical signal for transmission. Through this method, the pressure sensor 44 can accurately report the pressure exerted on the door seal 1, thereby inferring the gap between the door seal 1 and the refrigerator body 200, providing a reliable basis for controlling the inflation volume of the air pump 42. When the pressure sensor 44 detects insufficient pressure between the door seal 1 and the refrigerator body 200, it transmits a signal to the control system. The control system then controls the air pump 42 to increase the inflation volume, further inflating the airbag 41 and enhancing the fit between the door seal 1 and the refrigerator body 200. Conversely, when the pressure reaches a suitable range, the air pump 42 will stop or reduce inflation to avoid over-inflation from adversely affecting the door seal 1 and the refrigerator body 200, thus more effectively ensuring the sealing performance of the refrigerator door.

[0087] like Figure 4 As shown, the refrigerator proposed in this utility model includes: a cabinet 200, a door 100, and a hinge device. The hinge device is fixedly installed on the side of the cabinet 200 where the door is located. The door 100 is rotatably connected to the cabinet 200 through the hinge device. The door 100 is provided with a refrigerator door sealing structure.

[0088] Specifically, the refrigerator door sealing structure includes a door seal 1, a magnetic component 2, a flexible pre-tightening component 3, and an airbag compensation component 4.

[0089] The door seal 1 is fixedly installed on the side of the door 100 facing the opening of the box 200.

[0090] Magnetic suction components 2 are disposed inside the door seal 1. Magnetic suction components 2 include a first magnetic suction area 21, a second magnetic suction area 22, and a third magnetic suction area 23. The first magnetic suction area 21 is disposed at the four corners of the door body 100. The second magnetic suction area 22 is disposed on the hinge side of the door body 100 near the hinge device, but not at a corner, and its magnetic flux density is less than that of the second magnetic suction area 22. The third magnetic suction area 23 is disposed on the free side of the door body 100 other than the hinge side, and not at a corner, and its magnetic flux density is less than that of the second magnetic suction area 22. Simultaneously, the first magnetic suction area 21, the second magnetic suction area 22, and the third magnetic suction area 23 are integrally connected through a sintering process.

[0091] The flexible pre-tightening component 3 consists of a snap-fit ​​head 31 and a snap-fit ​​seat 32. The snap-fit ​​head 31 is located at the end of the door body 100 away from the hinge device, and the snap-fit ​​seat 32 is rotatably mounted on the housing 200 and corresponds to the snap-fit ​​head 31.

[0092] The airbag compensation assembly 4 includes an airbag 41, an air pump 42, an air tube 43, and a pressure sensor 44. The airbag 41 is located inside the door seal 1 and adjacent to the magnetic component 2. The air pump 42 is located on the end cap of the door body 100. The air tube 43 connects the airbag 41 and the air pump 42. The pressure sensor 44 is located on the side of the door seal 1 near the housing 200. The pressure sensor 44 is a MEMS sensor.

[0093] This invention utilizes the differentiated magnetic flux density of the magnetic attraction component 2 to precisely match the stress distribution pattern of various parts of the door body 100, thereby optimizing the sealing performance between the door seal 1 and the housing 200 and effectively improving cold leakage. Furthermore, this invention incorporates a flexible pre-tightening component 3, which provides a stable pre-compression force to the door seal 1 and continuously applies a rebound force in the closing direction, further enhancing the tightness of the door body 100's closure. Moreover, this invention also includes an airbag compensation component 4, which automatically inflates according to the actual closure status of the door body 100, effectively compensating for minor deformations or gaps that may occur in the door seal 1 during use, thereby improving the sealing effect of the door body 100.

[0094] Based on the aforementioned refrigerator door sealing structure, the refrigerator anti-leakage control method proposed in this utility model includes the following steps:

[0095] Obtain the pressure value measured by the pressure sensor;

[0096] Determine the actual gap between the door seal and the cabinet based on the pressure value;

[0097] When the actual gap is greater than the preset gap, the air pump is turned on to inflate the airbag.

[0098] Understandably, the preset gap can be flexibly adjusted according to actual application requirements; for example, the preset gap can be set to 0.2mm. In practical applications, a correspondence table between pressure values ​​and gaps can be established beforehand through experiments. After obtaining the pressure value, the corresponding actual gap can be determined by consulting this correspondence table. Subsequently, the actual gap is compared with the preset gap to determine whether gap compensation is needed.

[0099] This invention utilizes a pressure sensor to monitor the pressure of the door seal in real time, thereby calculating the actual gap between the door seal and the enclosure. When the actual gap exceeds the preset gap, the system will automatically activate the inflation expansion compensation mechanism to ensure that the door seal fits tightly against the enclosure, effectively preventing cold air leakage and effectively addressing sealing failures caused by factors such as door deformation, shrinkage of the enclosure's foam layer, or temperature fluctuations.

[0100] In the description of this utility model, it should be understood that, unless otherwise expressly specified and limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it may be directly connected to or indirectly connected to the other element.

[0101] Furthermore, the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0102] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0103] Furthermore, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0104] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A refrigerator door sealing structure, characterized in that, include: Door seal is fixedly installed on the side of the door facing the opening of the cabinet; A magnetic attraction component is disposed inside the door seal, and the magnetic attraction component has a differentiated magnetic flux density to match the stress distribution of the door body.

2. The refrigerator door sealing structure as described in claim 1, characterized in that, The magnetic attraction component includes: The first magnetic attraction area is located at the four corners of the door. The second magnetic attraction area is located on the hinge side of the door body near the hinge device, and not at the corner. The magnetic flux density of the second magnetic attraction area is less than that of the second magnetic attraction area. The third magnetic attraction area is located on the free side of the door body other than the hinge side, and is not at the corner. The magnetic flux density of the third magnetic attraction area is less than that of the second magnetic attraction area.

3. The refrigerator door sealing structure as described in claim 2, characterized in that, The first magnetic attraction region, the second magnetic attraction region, and the third magnetic attraction region are integrated and connected through a sintering process.

4. The refrigerator door sealing structure as described in any one of claims 1-3, characterized in that, Also includes: The flexible pre-tightening assembly consists of a snap-fit ​​head and a snap-fit ​​seat that interlock with each other. The snap-fit ​​head is located at the end of the door body away from the hinge device, and the snap-fit ​​seat is located in the housing body and corresponds to the snap-fit ​​head.

5. The refrigerator door sealing structure as described in claim 4, characterized in that, The card holder is rotatably mounted on the housing.

6. The refrigerator door sealing structure as described in claim 1, characterized in that, Also includes: An airbag compensation component is disposed on the door body. When the airbag compensation component is inflated, it pushes against the door seal so that the door seal is tightly attached to the opening of the box body.

7. The refrigerator door sealing structure as described in claim 6, characterized in that, The airbag compensation component includes: An airbag is disposed inside the door seal and adjacent to the magnetic attraction component; An air pump is installed on the end cover of the door body; An air tube connects the airbag to the air pump.

8. The refrigerator door sealing structure as described in claim 7, characterized in that, The airbag compensation component also includes: A pressure sensor is located on the side of the door seal near the enclosure.

9. The refrigerator door sealing structure as described in claim 8, characterized in that, The pressure sensor is a MEMS sensor.

10. A refrigerator, comprising a cabinet, a door, and a hinge device, wherein the hinge device is fixedly disposed on the side of the cabinet where the door is located, and the door is rotatably connected to the cabinet via the hinge device, characterized in that, It also includes the refrigerator door sealing structure as described in any one of claims 1-9.

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