Inflatable cold storage door

Abstract

The utility model provides an inflatable cold storage door which comprises inflatable door plates, a base is arranged on one side of each inflatable door plate, the inflatable door plates are pivoted in a door frame through hinges, the number of the inflatable door plates is two, and the two inflatable door plates are arranged to be hinged doors. The inflating door plate is provided with an inflating valve. When in use, the inflating device inflates air into the inflating door plate from the inflating valve. When the inside of the inflation door plate reaches certain pressure, the inflation device is disconnected, and the inflating valve automatically prevents gas inside the inflation door plate from escaping. After being filled with air, the two inflatable door plates extrude each other at the closed position to form flexible sealing, and loss of cooling capacity in the refrigeration house is reduced. When articles are carried into the refrigeration house, a space for people to pass through can be supported at the closed position of the two inflatable door plates, people can pass through the space quickly, and after people pass through the space, air pressure in the inflatable door plates enables the inflatable door plates to recover the closed state quickly. And the inflatable door plate is light in weight, so that the inflatable door plate can be easily and quickly opened or closed, and the leakage of cold air is reduced.

Description

Technical Field

[0001] The utility model relates to a cold storage door, in particular to an inflatable cold storage door. Background Art

[0002] Cold storage doors play a vital role in cold storage insulation. Existing cold storage doors use insulation curtains to block the escape of cold air in the cold storage and the entry of hot air from the outside. Due to structural limitations, the insulation curtains cannot provide high sealing, which easily leads to leakage of cold air from the cold storage, increasing the operating cost of the cold storage. During use, since the insulation curtains are relatively thick and heavy, it is more laborious to open and close, which brings inconvenience to personnel. During the frequent opening and closing of the insulation curtains, the alternating cold and warm air contact the surface of the insulation curtains, forming condensed water on the surface of the insulation curtains. The insulation curtains are exposed to moisture for a long time, causing the materials to absorb moisture, mold, rot and deform, reducing the insulation effect, which not only poses a health and safety hazard to the items in the warehouse, but also poses a threat to the health of personnel.

[0003] Therefore, the above situation needs to be resolved urgently. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, the utility model provides an inflatable cold storage door.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides an inflatable cold storage door, including an inflatable door panel, a base is provided on one side of the inflatable door panel, a hinge is provided on the side of the base away from the inflatable door panel, the inflatable door panel is pivotally connected to the door frame through the hinge, and there are two inflatable door panels, and the two inflatable door panels are set as double doors. An air valve is provided on the lower side of the inflatable door panel, and the air valve can be set at any position convenient for inflation, such as the lower side of the inflatable door panel. When in use, the inflatable device rushes gas into the inflatable door panel from the air valve, and the gas can be argon or krypton. When a certain pressure is reached inside the inflatable door panel, the inflatable device is disconnected, and the air valve automatically prevents the gas inside the inflatable door panel from escaping. After the two inflatable door panels are filled with air, they squeeze each other at the closed position to form a flexible seal. When carrying items into the cold storage, the inflatable door panel is light in weight, and the inflatable door panel can be easily opened or closed quickly through the hinge to reduce the leakage of cold air. When people go in and out to carry small items, they can use the elasticity of the inflatable door panels to create a space for people to pass through at the closed position of the two inflatable door panels, allowing people to pass through quickly. After the people pass through, the air pressure inside the inflatable door panels causes the inflatable door panels to quickly return to the closed state, reducing the loss of cold air inside the cold storage.

[0006] Furthermore, in the above-mentioned inflatable cold storage door, the hinge includes a first leaf, a second leaf, and a rotating shaft, and the first leaf and the second leaf are both pivotally connected to the rotating shaft. The rotating shaft sleeve is provided with a torsion spring, and the two ends of the torsion spring are respectively in contact with the first leaf and the second leaf, and the torsion spring applies a force to the first leaf and the second leaf to keep the inflatable door plate closed. When the inflatable cold storage door is opened, the torsion spring undergoes elastic deformation, and the elastic deformation of the torsion spring is converted into a force acting on the first leaf and the second leaf. When the inflatable cold storage door loses external force, the torsion spring causes the inflatable door plate to close automatically slowly and smoothly, ensuring that the inflatable door plate is closed in time, thereby improving convenience and avoiding the loss of cold caused by the long-term opening of the cold storage. In addition, the force of the torsion spring squeezes the inflatable door plate toward the door frame, and the inflatable door plate is deformed and embedded in the door frame, thereby improving the sealing of the inflatable door plate and the door frame, reducing the loss of cold in the cold storage, and reducing the operating cost of the cold storage.

[0007] Furthermore, in the above-mentioned inflatable cold storage door, a heating unit is provided on the outer surface of the inflatable door panel. The heating unit is a flexible electric heating film. A carbon fiber heating plate or a resistance wire can be attached to the surface of the inflatable door panel to provide uniform and efficient heat to avoid the generation of condensed water.

[0008] Furthermore, in the above-mentioned inflatable cold storage door, a seal is provided at the closing position of the two inflatable door panels, and the seal includes a base and a magnetic suction strip, the base is provided at the closing position of the inflatable door panels, and the magnetic suction strip is provided on the side of the base away from the inflatable door panels. The magnetic force of the magnetic suction strip can accurately reset the inflatable door panels when they are closed, and the magnetic suction strip can provide a higher sealing performance for the closing of the inflatable door panels, thereby preventing cold air from leaking out and reducing the operating cost of the cold storage.

[0009] Furthermore, in the above-mentioned inflatable cold storage door, two or more magnetic suction strips are provided. When the magnetic suction strips are attracted, a heat insulation cavity is formed. When the inflatable door panel is closed, multiple magnetic suction strips improve the sealing performance, and the magnetic suction strips and the base form a heat insulation cavity. The gas in the heat insulation cavity is in a static state, which reduces the heat exchange between the cold storage and the environment, further improves the heat preservation of the seal, and reduces the operating cost of the cold storage.

[0010] Furthermore, in the above-mentioned inflatable cold storage door, a drawstring is provided inside the inflatable door panel, the drawstring connects opposite sides of the inflatable door panel, and the drawstring divides the inside of the inflatable door panel into a plurality of grid-shaped spaces. When the inflatable door panel is filled with gas, the drawstring can fix the shape of the inflatable door panel, and the inflatable door maintains a preset shape after inflation, keeps the inflatable door panel flat and tight, and prevents the inflatable door panel from collapsing or bulging due to uneven gas pressure.

[0011] Furthermore, in the above-mentioned inflatable cold storage door, the cross section of the inflatable door plate is an ellipse. In the ellipse inner cavity, due to the small curvature at both ends of the ellipse, the tensile stress per unit area is relatively large, and the strength and flatness of the two ends of the ellipse are higher, which can reduce the contact gap of the inflatable door plate, prevent cold air from escaping, prevent warm and humid air from entering the cold storage, and reduce the possibility of ice formation at the closed part of the inflatable door plate.

[0012] Furthermore, in the above-mentioned inflatable cold storage door, the inflatable door panel material is PVC or elastic rubber.

[0013] It can be seen from the above technical scheme that the utility model has the following beneficial effects: the inflatable cold storage door of the utility model can be opened or closed quickly due to its light weight, reducing the leakage of cold air. When people go in and out to carry small items, the elasticity of the inflatable door panel can be used to support a space for people to pass through at the closed position of the two inflatable door panels, so that people can pass through quickly. After the people pass through, the air pressure inside the inflatable door panel quickly restores the inflatable door panel to a closed state, reducing the loss of cold inside the cold storage. The hinge that can be closed automatically ensures that the inflatable door panel is closed in time and that the inflatable door panel is in a closed state, avoiding the loss of cold caused by the long-term opening of the cold storage, and the hinge squeezes the inflatable door panel toward the door frame, and the inflatable door panel is deformed and embedded in the door frame, thereby improving the sealing of the inflatable door panel and the door frame, reducing the loss of cold in the cold storage, and reducing the operating cost of the cold storage. A heating unit is provided on the outer surface of the inflatable door panel to continuously heat the outer surface of the inflatable door panel to prevent the occurrence of condensation and avoid damage caused by the generation of condensed water. A seal is provided at the closing position of the two inflatable door panels, which improves the sealing of the inflatable door panels, avoids the leakage of cold air, and reduces the operating cost of the cold storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of an inflatable cold storage door of the utility model;

[0015] Figure 2 for Figure 1 A top view of

[0016] Figure 3 It is a structural schematic diagram of the hinge of the utility model;

[0017] Figure 4 This is a top view of a utility model of an inflatable cold storage door equipped with a heating unit;

[0018] Figure 5 This is a top view of a utility model of an inflatable cold storage door with a seal;

[0019] Figure 6 It is a partial enlarged view of the sealing member described in the utility model;

[0020] Figure 7 It is a cross-sectional view of the utility model with a drawstring.

[0021] In the figure: 1. Inflatable door panel, 11. Pull strap, 12. Base, 2. Hinge, 21. First page, 22. Second page, 23. Rotating shaft, 24. Torsion spring, 3. Heating unit, 4. Sealing element, 41. Base, 42. Magnetic suction strip. DETAILED DESCRIPTION

[0022] Example 1

[0023] like Figure 1-2 An inflatable cold storage door shown includes an inflatable door panel 1, a base 12 is provided on one side of the inflatable door panel 1, a hinge 2 is provided on the side of the base 12 away from the inflatable door panel 1, the inflatable door panel 1 is pivotally connected to the door frame through the hinge 2, there are two inflatable door panels 1, and the two inflatable door panels 1 are configured as double doors. An air valve is provided on the lower side of the inflatable door panel 1. When in use, gas is injected into the inflatable door panel 1 from the air valve, and the gas can be argon or krypton. When a certain pressure is reached inside the inflatable door panel 1, the inflation device is disconnected, and the air valve automatically prevents the gas from escaping. The cross-section of the inflatable door panel 1 is elliptical, and the material of the inflatable door panel 1 is PVC or elastic rubber. The inflatable door panels 1 are squeezed against each other to form a flexible seal.

[0024] like Figure 3 In the illustrated inflatable cold storage door, the hinge 2 includes a first leaf 21, a second leaf 22, and a rotating shaft 23. The first leaf 21 and the second leaf 22 are both pivotally connected to the rotating shaft 23. The rotating shaft 23 is sleeved with a torsion spring 24, and the two ends of the torsion spring 24 are respectively in contact with the first leaf 21 and the second leaf 22. The torsion spring 24 applies a force to the first leaf 21 and the second leaf 22 to keep the inflatable door plate closed.

[0025] Example 2

[0026] like Figure 4 An inflatable cold storage door shown includes an inflatable door panel 1, a base 12 is provided on one side of the inflatable door panel 1, a hinge 2 is provided on the side of the base 12 away from the inflatable door panel 1, the inflatable door panel 1 is pivotally connected to the door frame through the hinge 2, there are two inflatable door panels 1, and the two inflatable door panels 1 are configured as double doors. An air valve is provided on the lower side of the inflatable door panel 1. When in use, gas is injected into the inflatable door panel 1 from the air valve. When a certain pressure is reached inside the inflatable door panel 1, the inflatable device is disconnected, and the air valve automatically prevents gas from escaping. The cross-section of the inflatable door panel 1 is elliptical, and the material of the inflatable door panel 1 is PVC or elastic rubber. The inflatable door panels 1 are squeezed against each other to form a flexible seal. A heating unit 3 is provided on the outer surface of the inflatable door panel 1. The heating unit 3 is a flexible electric heating film. A carbon fiber heating plate or a resistance wire can be attached to the surface of the inflatable door panel 1.

[0027] Example 3

[0028] like Figure 5-6An inflatable cold storage door shown includes an inflatable door panel 1, a base 12 is provided on one side of the inflatable door panel 1, a hinge 2 is provided on the side of the base 12 away from the inflatable door panel 1, the inflatable door panel 1 is pivotally connected to the door frame through the hinge 2, there are two inflatable door panels 1, and the two inflatable door panels 1 are configured as double doors. An air valve is provided on the lower side of the inflatable door panel 1. When in use, gas is injected into the inflatable door panel 1 from the air valve. When a certain pressure is reached inside the inflatable door panel 1, the inflatable device is disconnected, and the air valve automatically prevents gas from escaping. The cross-section of the inflatable door panel 1 is elliptical, and the material of the inflatable door panel 1 is PVC or elastic rubber. A seal 4 is provided at the closing part of the two inflatable door panels 1, and the seal 4 includes a base 41 and a magnetic suction strip 42. The base 41 is provided at the closed end of the inflatable door panel 1, and the magnetic suction strip 42 is provided at the side of the base 41 away from the inflatable door panel 1. There are two or more magnetic suction strips 42, and when the magnetic suction strips 42 are attracted, they form a heat insulation cavity 421. When the inflatable door panel 1 is closed, the plurality of magnetic suction strips 42 improve the sealing performance, and the magnetic suction strips 42 and the base 41 form a heat insulation cavity 421.

[0029] Example 4

[0030] like Figure 7 An inflatable cold storage door shown includes an inflatable door panel 1, a base 12 is provided on one side of the inflatable door panel 1, a hinge 2 is provided on the side of the base 12 away from the inflatable door panel 1, the inflatable door panel 1 is pivotally connected to the door frame through the hinge 2, there are two inflatable door panels 1, and the two inflatable door panels 1 are configured as double doors. An air valve is provided on the lower side of the inflatable door panel 1. When in use, gas is rushed into the inflatable door panel 1 from the air valve, and the gas can be argon or krypton. When a certain pressure is reached inside the inflatable door panel 1, the inflation device is disconnected, and the air valve automatically prevents the gas from escaping. The cross-section of the inflatable door panel 1 is elliptical, and the material of the inflatable door panel 1 is PVC or elastic rubber. A drawstring 11 is provided inside the inflatable door panel 1, and the drawstring 11 connects the opposite sides of the inflatable door panel 1, and the drawstring 11 divides the inside of the inflatable door panel 1 into a plurality of grid-like spaces.

[0031] The above embodiments are exemplary, and their purpose is to illustrate the technical concept and features of the utility model so that people familiar with this field can understand the content of the utility model and implement it accordingly, and they cannot limit the protection scope of the utility model in turn. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An inflatable cold storage door, characterized in that: The invention comprises an inflatable door panel (1), wherein a base (12) is provided on one side of the inflatable door panel (1), a hinge (2) is provided on the side of the base (12) away from the inflatable door panel (1), the inflatable door panel (1) is pivotally connected to a door frame via the hinge (2), the inflatable door panel (1) is two, and the inflatable door panel (1) is configured as a double-leaf door; the inflatable door panel (1) is provided with an air valve.

2. The air-filled cold storage door according to claim 1, characterized in that: The hinge (2) comprises a first leaf piece (21), a second leaf piece (22), and a rotating shaft (23); the first leaf piece (21) and the second leaf piece (22) are both pivotally connected to the rotating shaft (23); a torsion spring (24) is sleeved on the rotating shaft (23); two ends of the torsion spring (24) are respectively in contact with the first leaf piece (21) and the second leaf piece (22).

3. The air-filled cold storage door according to claim 1, characterized in that: The outer surface of the inflatable door panel (1) is provided with a heating unit (3); the heating unit (3) is a flexible electric heating film.

4. The air-filled cold storage door according to claim 1, characterized in that: A sealing member (4) is provided at the closed position of the two inflatable door panels (1), and the sealing member (4) comprises a base (41) and a magnetic suction strip (42); the base (41) is provided at one closed end of the inflatable door panel (1), and the magnetic suction strip (42) is provided at a side of the base (41) away from the inflatable door panel (1).

5. The air-filled cold storage door according to claim 4, characterized in that: The magnetic suction strips (42) are provided in two or more numbers, and when the magnetic suction strips (42) are attracted together, a heat-insulating cavity (421) is formed.

6. The air-filled cold storage door according to claim 1, characterized in that: A drawstring (11) is provided inside the inflatable door panel (1), and the drawstring (11) connects opposite sides of the inflatable door panel (1); the drawstring (11) divides the inside of the inflatable door panel (1) into a plurality of grid-shaped spaces.

7. The air-filled cold storage door according to claim 1, characterized in that: The inflatable door panel (1) has an elliptical cross section.

8. The air-filled cold storage door according to claim 1, characterized in that: The material of the inflatable door panel (1) is PVC or elastic rubber.

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