Door seal and ultra-low temperature refrigerator comprising the same

Abstract

The utility model relates to a door seal strip and including its ultra low temperature refrigerator belong to refrigeration equipment technical field. The door seal strip is equipped with a plurality, all fixed on the cabinet of refrigerator, and with the door body sealed contact connection of cabinet, and the door seal strip includes the sleeve, and the sleeve inside hollow and stored gas, and the sleeve inside still is equipped with the partition for blocking the convection of sleeve inside gas. The door seal strip passes through setting the partition in the sleeve, and the free flow of internal gas is blocked, and the heat exchange caused because of gas convection is reduced, thereby promoting the overall heat insulation performance of door seal strip, reduces the heat leakage of door body place, guarantees the ultra low temperature environment in the ultra low temperature refrigerator.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration equipment technology, specifically relating to a door seal and an ultra-low temperature refrigerator including the same. Background Technology

[0002] Ultra-low temperature freezers are specialized freezing devices used to store biological agents, vaccines, medical samples, and other special medical equipment. Combined with a cascade refrigeration system, ultra-low temperature freezers can lower their internal space to -80°C to maintain the optimal storage environment for medical samples. However, significant heat loss occurs at the door seal area of ​​ultra-low temperature freezers.

[0003] In existing technologies, the door seals of ultra-low temperature freezers are mostly two parallel rubber sleeves that wrap around the perimeter, with air in the middle to enhance insulation performance. While existing door seals can block most of the heat exchange between the outside air and the interior of the freezer, convective heat transfer also occurs within the sleeves, which reduces the insulation effectiveness of the door seal.

[0004] Therefore, how to provide a door seal with excellent thermal insulation performance is a technical problem that urgently needs to be solved. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a door seal and an ultra-low temperature refrigerator including the door seal. By setting a partition inside the sleeve, the free flow of internal gas is blocked, reducing heat exchange caused by gas convection, thereby improving the overall thermal insulation performance of the door seal.

[0006] This utility model provides a door seal strip, which is provided in multiple parts and is fixed on the refrigerator body and sealed to the door of the refrigerator body. The door seal strip includes a sleeve, which is hollow inside and stores gas. The sleeve is also provided with a baffle to block the convection of gas inside the sleeve.

[0007] This technical solution, by setting a partition inside the sleeve, blocks the free flow of internal gas, reduces heat exchange caused by gas convection, thereby improving the overall heat insulation performance of the door seal, reducing heat leakage at the door, and ensuring the ultra-low temperature environment inside the ultra-low temperature freezer.

[0008] In some embodiments, at least one partition is provided, and multiple partitions are evenly distributed inside the sleeve and arranged along the length of the sleeve.

[0009] This technical solution can systematically block the gas flow path by uniformly setting one or more partitions, effectively reducing convective heat transfer, improving the overall heat insulation uniformity, and avoiding intensified local heat exchange.

[0010] In some embodiments, the spacing between adjacent partitions is 15cm to 25cm.

[0011] This technical solution can achieve the optimal balance between thermal insulation performance and cost while ensuring sufficient blocking of gas convection and avoiding material waste or reduced structural rigidity due to excessively dense partitions.

[0012] In some embodiments, the sleeve and the partition are integrally formed.

[0013] This technical solution eliminates the thermal bridging effect at the joints, enhances the overall structure and sealing performance, and reduces production process steps, thereby lowering manufacturing costs.

[0014] In some embodiments, the sleeve and partition are made of rubber.

[0015] This technical solution can ensure flexibility to achieve a tight fit of the door while also taking into account low temperature resistance, making it suitable for ultra-low temperature environments and cost-effective.

[0016] In some of these embodiments, the partition is made with a thickness of not less than 4 mm.

[0017] This technical solution ensures that the partition has sufficient structural strength to effectively block gas flow and avoids reduced thermal insulation performance or partition deformation and failure due to insufficient thickness.

[0018] In some embodiments, the gas is an inert gas.

[0019] This technical solution can further suppress heat conduction and convection, significantly improving the thermal insulation efficiency of door seals.

[0020] Based on the aforementioned door seal, this utility model also provides an ultra-low temperature refrigerator, including the aforementioned door seal and a cabinet, the cabinet having a door, and the door seal being in sealing contact with the door.

[0021] This technical solution effectively reduces heat leakage at the connection between the door and the refrigerator body by using the aforementioned door seal with a partition structure, thus significantly improving the overall heat preservation performance of the refrigerator.

[0022] Based on the above solution, the door seal provided by this utility model, by setting a partition inside the sleeve, blocks the free flow of internal gas, reduces heat exchange caused by gas convection, thereby improving the overall heat insulation performance of the door seal, reducing heat leakage at the door, and ensuring the ultra-low temperature environment inside the ultra-low temperature refrigerator; furthermore, by adding a partition to the existing rubber sleeve structure, no complex process is required, and it can still be manufactured using conventional materials (such as rubber), keeping production costs controllable. It can directly replace existing door seals without requiring additional modifications to the refrigerator body or door. In summary, the door seal in this embodiment significantly improves the heat insulation effect of the door seal while maintaining low cost, solving the problem of heat loss caused by gas convection inside the sleeve in the prior art. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 This is a cross-sectional view of the door seal strip divided into four equal parts in an embodiment of the present utility model;

[0025] Figure 2 This is a cross-sectional view of the door seal strip divided into five equal parts in an embodiment of this utility model.

[0026] In the picture:

[0027] 1. Door seal; 101. Sleeve; 102. Partition. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] like Figures 1-2 As shown, in one embodiment of the door seal 1 and the ultra-low temperature refrigerator including the present invention, the door seal 1 is provided in multiple forms, all of which are fixed on the refrigerator body and are in sealed contact with the door of the body. The door seal 1 includes a sleeve 101, which is hollow inside and stores gas. The sleeve 101 is also provided with a partition 102 for blocking the convection of gas inside the sleeve 101.

[0032] In the above illustrative embodiment, the door seal 1 provided by this utility model, by setting a partition 102 inside the sleeve 101, blocks the free flow of internal gas, reduces heat exchange caused by gas convection, thereby improving the overall heat insulation performance of the door seal 1, reducing heat leakage at the door, and ensuring the ultra-low temperature environment inside the ultra-low temperature refrigerator; and by adding a partition 102 to the existing rubber sleeve 101 structure, no complex process is required, and it can still be manufactured using conventional materials (such as rubber), keeping production costs controllable. It can directly replace the existing door seal 1 without requiring additional modifications to the refrigerator body or door. In summary, the door seal 1 in this embodiment significantly improves the heat insulation effect of the door seal 1 while maintaining low cost, and solves the problem of heat loss caused by gas convection inside the sleeve 101 in the prior art.

[0033] In some embodiments, at least one partition 102 is provided, and multiple partitions 102 are evenly distributed inside the sleeve 101 and arranged along the length direction of the sleeve 101. By uniformly arranging one or more partitions 102, the gas flow path can be systematically blocked, effectively reducing convective heat transfer, improving the overall heat insulation uniformity, and avoiding intensified local heat exchange. As an illustrative embodiment, Figure 1 A schematic diagram showing the partitions 102 divided into four equal parts for the door seal 1. Figure 2 A schematic diagram showing the partitions 102 divided into five equal parts for the door seal 1.

[0034] In some embodiments, each door seal 1 includes at least two sleeves arranged side by side. The number of sleeves 101 can be set as needed, and theoretically, the more sleeves 101 there are, the better the thermal insulation performance of the door seal 1.

[0035] In some embodiments, such as Figure 1As shown, the spacing H between adjacent partitions 102 is 15cm to 25cm. By controlling the spacing between adjacent partitions 102 within the range of 15cm to 25cm, it is possible to ensure sufficient obstruction of gas convection while avoiding material waste or reduced structural rigidity due to excessively dense partitions 102, thus achieving the optimal balance between thermal insulation performance and cost.

[0036] In some embodiments, the sleeve 101 and the partition 102 are integrally formed. The integral forming process of the sleeve 101 and the partition 102 eliminates the thermal bridging effect at the joint, enhances the overall structure and sealing performance, and reduces the number of production steps and manufacturing costs.

[0037] In some embodiments, the sleeve 101 and the partition 102 are made of rubber. Using rubber as the material for the sleeve 101 and the partition 102 ensures flexibility for a tight fit of the door while also maintaining low-temperature resistance, making it suitable for ultra-low temperature environments and cost-effective.

[0038] In some embodiments, such as Figure 1 As shown, the thickness D of the partition 102 is not less than 4mm. By limiting the thickness of the partition 102 to not less than 4mm, it is ensured that the partition 102 has sufficient structural strength to effectively block gas flow and avoid the decrease in heat insulation performance or the deformation and failure of the partition 102 due to insufficient thickness.

[0039] In some embodiments, the gas is an inert gas. By using an inert gas instead of air to fill the sleeve 101, the lower thermal conductivity and more stable chemical properties of the inert gas further suppress heat conduction and convection, significantly improving the thermal insulation efficiency of the door seal 1.

[0040] Based on the aforementioned door seal 1, this utility model also provides an ultra-low temperature refrigerator, which includes the aforementioned door seal 1 and a cabinet, the cabinet having a door, and the door seal 1 being in a sealing contact with the door.

[0041] In the above illustrative embodiments, the ultra-low temperature refrigerator provided by this utility model effectively reduces heat leakage at the connection between the door and the cabinet by adopting the door seal 1 with the aforementioned partition 102 structure, significantly improving the overall heat preservation performance of the refrigerator. The sealed contact connection between the door seal 1 and the door ensures good airtightness, reducing cold air leakage and external hot air infiltration. Furthermore, this structural design maintains the stability of the ultra-low temperature (-80℃) storage environment without requiring complex modifications to the main structure of the refrigerator, featuring simple implementation and good compatibility. It is particularly suitable for the storage needs of medical supplies such as biological agents and vaccines that require long-term stable ultra-low temperature environments.

[0042] Through the description of several embodiments of the door seal 1 of the present invention and the ultra-low temperature refrigerator including the same, it can be seen that the door seal 1 of the present invention and the ultra-low temperature refrigerator including the same have at least one or more of the following advantages.

[0043] 1. The door seal 1 provided by this utility model, by setting a partition 102 inside the sleeve 101, blocks the free flow of internal gas, reduces heat exchange caused by gas convection, thereby improving the overall heat insulation performance of the door seal 1, reducing heat leakage at the door, and ensuring the ultra-low temperature environment inside the ultra-low temperature refrigerator.

[0044] 2. The door seal 1 provided by this utility model adds a partition 102 to the existing rubber sleeve 101 structure. It does not require complicated processes and can still be manufactured using conventional materials (such as rubber). The production cost is controllable. It can directly replace the existing door seal 1 without requiring additional modifications to the refrigerator body or door.

[0045] 3. The ultra-low temperature refrigerator provided by this utility model effectively reduces heat leakage at the connection between the door and the cabinet by adopting the door seal 1 with the above-mentioned partition 102 structure, which significantly improves the overall heat preservation performance of the refrigerator; the sealed contact connection between the door seal 1 and the door ensures good airtightness and reduces cold air leakage and external hot air infiltration.

[0046] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0047] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A door seal, characterized in that, Multiple door seals are provided, all of which are fixed on the refrigerator body and are in sealed contact with the door of the body. Each door seal includes a sleeve, which is hollow inside and stores gas. The sleeve also has a baffle inside to block the convection of gas inside the sleeve.

2. The door seal according to claim 1, characterized in that, At least one partition is provided, and multiple partitions are evenly distributed inside the sleeve and arranged along the length of the sleeve.

3. The door seal according to claim 2, characterized in that, The spacing between adjacent partitions is 15cm to 25cm.

4. The door seal according to claim 1, characterized in that, The sleeve and the partition are integrally formed.

5. The door seal according to claim 1, characterized in that, The sleeve and the partition are made of rubber.

6. The door seal according to claim 1, characterized in that, The thickness of the partition shall not be less than 4mm.

7. The door seal according to claim 1, characterized in that, The gas is an inert gas.

8. An ultra-low temperature freezer, characterized in that, The device includes a door seal as described in any one of claims 1-7, and also includes a housing, the housing having a door, and the door seal being in a sealing contact with the door.

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