Double curtain thermal roller shutter door

Abstract

The application provides a double-curtain thermal insulation roller shutter door, which comprises a door frame, a thermal insulation door curtain and a quick door curtain; the door frame comprises two vertical columns which are arranged at intervals in the horizontal direction, and the thermal insulation door curtain and the quick door curtain are arranged between the two vertical columns; the top end of the vertical column is provided with a driving device connected with the thermal insulation door curtain and the quick door curtain; the thermal insulation door curtain comprises a thermal insulation inner container layer and an outer protective layer, and the thermal insulation inner container layer is arranged between the two outer protective layers. The double-curtain thermal insulation roller shutter door has excellent thermal insulation and sealing properties, can provide high and efficient thermal insulation, and blocks heat transfer. The double-curtain thermal insulation roller shutter door integrates double curtains, has small occupation area and is convenient to use. The failure rate is low, and the later maintenance is also very convenient. The thermal insulation door curtain is used to replace the thick and heavy cold storage door sliding door. Compared with the door body made of metal material, the thermal insulation door curtain is not easy to freeze. Moreover, the thermal insulation door curtain is light in weight, and personnel in the cold storage can manually lift and open the thermal insulation door curtain to escape. In addition, the thermal insulation door curtain can be damaged by manpower, so that even if the thermal insulation door curtain cannot be opened, the personnel can still escape by damaging the thermal insulation door curtain.

Description

Technical Field

[0001] This application relates to the field of cold storage door technology, and more particularly to a double-curtain insulated roller shutter door. Background Technology

[0002] Cold storage doors are doors installed in cold storage equipment, freezer rooms, and other refrigerated environments to provide insulation and airtightness. Their main function is to maintain a low-temperature environment within the cold storage, preventing the temperature from rising and ensuring that stored items remain at a constant low temperature.

[0003] Sliding cold storage doors are a common type of cold storage door, opening and closing in a sliding manner, and are suitable for large cold storage facilities. These doors typically use stainless steel frames and bodies to ensure strength and durability. The interior is filled with insulation materials such as polyurethane to enhance insulation performance. For cold chain logistics, since logistics vehicles frequently enter and exit cold storage, high-speed lifting doors are often added to the outside of the cold storage doors to accommodate rapid opening and closing. For example, Chinese utility model patent CN219160746U proposes a two-in-one cold storage door that combines a sliding door and a high-speed lifting door into one unit, satisfying the need for rapid opening and closing while reducing the space occupied by the cold storage door within the cold storage area.

[0004] However, cold storage sliding doors mostly use metal door frames and metal edging. Metal has good thermal conductivity, so the joints between the door and the door frame are very prone to freezing. Once the cold storage door is frozen, it becomes difficult to open. Moreover, the door is thick and sturdy, so if people are trapped inside the cold storage, they cannot escape by breaking or opening the door. Summary of the Invention

[0005] This application provides a double-curtain insulated roller shutter door, including a door frame, an insulated door curtain, and a high-speed door curtain;

[0006] The door frame includes two columns spaced apart in the horizontal direction, and the heat-insulating door curtain and the high-speed door curtain are both arranged between the two columns;

[0007] The top of the column is provided with a drive device that is connected to the heat-insulating door curtain and the high-speed door curtain;

[0008] The insulated door curtain includes an insulated inner layer and an outer protective layer, with the insulated inner layer disposed between the two outer protective layers.

[0009] The double-curtain insulated roller shutter door provided in this application replaces the heavy sliding door of a cold storage room with an insulated curtain. Compared to the metal door body, the insulated curtain is less prone to freezing. Furthermore, the insulated curtain is lightweight, allowing people inside the cold storage to escape by manually lifting and opening it. Moreover, the insulated curtain can be manually damaged; even if it cannot be opened, escape can still be achieved by breaking the curtain.

[0010] In one possible implementation, the double-curtain insulated roller shutter door provided in this application embodiment has a column including a track, and the side end of the insulated door curtain is slidably disposed in the guide groove of the track.

[0011] In one possible implementation, the double-curtain insulated roller shutter door provided in this application embodiment has two cavities in the track, the cavities extending along the length of the track, heating wires provided in the cavities, and the insulated door curtain located between the two cavities.

[0012] In one possible implementation, the double-curtain insulated roller shutter door provided in this application embodiment has two cavities symmetrically distributed on opposite sides of the guide groove, and the cavities are close to the opening of the guide groove.

[0013] In one possible implementation, the double-curtain insulated roller shutter door provided in this application embodiment has a door curtain seal in the guide groove, and the door curtain seal extends along the length direction of the track;

[0014] The opposite ends of the door curtain seal are respectively connected to the inner walls of the opposite sides of the guide groove, and the side end of the door curtain seal has a receiving groove, and the side end of the heat-insulating door curtain is located in the receiving groove.

[0015] In one possible implementation, the double-curtain insulated roller shutter door provided in this application embodiment has a column including a slide rail, the high-speed door curtain being slidably installed in the slide rail groove, and two track sealing strips symmetrically provided on opposite sides of the groove opening, with the ends of the two track sealing strips respectively resting on opposite sides of the high-speed door curtain.

[0016] In one possible implementation, the double-curtain insulated roller shutter door provided in this application embodiment further includes a door opening sealing module, wherein the door opening sealing module is provided between the insulated door curtain and the high-speed door curtain;

[0017] The door opening sealing module includes two vertical sealing strips and one horizontal partition strip. The two vertical sealing strips are respectively disposed on the side ends of the two columns. The horizontal partition strip is disposed at the top of the vertical sealing strips, and the two ends of the horizontal partition strip are respectively connected to the two columns.

[0018] In one possible implementation, the double-curtain insulated roller shutter door provided in this application embodiment includes a vertical sealing strip comprising a sponge sealing bracket, a sealing sponge strip, and a sealing rubber sheet. The sealing sponge strip is embedded in the mounting groove of the sponge sealing bracket, and the sealing rubber sheet wraps around the outside of the sealing sponge strip. The opposite ends of the sealing rubber sheet are connected to the sponge sealing bracket.

[0019] In one possible implementation, the double-curtain insulated roller shutter door provided in this application embodiment has the door opening sealing module provided on the side of the insulated door curtain away from the fast door curtain.

[0020] In one possible implementation, the double-curtain insulated roller shutter door provided in this application embodiment has an inner insulated liner made of flexible thermal insulation material.

[0021] Beneficial Effects: The double-curtain insulated roller shutter door provided in this application embodiment has excellent thermal insulation and sealing properties, providing high-efficiency thermal insulation and blocking heat transfer. This double-curtain insulated roller shutter door integrates two curtains into one unit, occupying little space and being easy to use. It has a low failure rate and is very convenient for later maintenance. The insulated curtain replaces the heavy sliding door of the cold storage. Compared to metal doors, the insulated curtain is less prone to freezing. Furthermore, the insulated curtain is lightweight, allowing people inside the cold storage to escape by manually lifting and opening it. Moreover, the insulated curtain can be manually damaged; even if it cannot be opened, escape can still be achieved by breaking the curtain. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the double-curtain insulated roller shutter door provided in the embodiments of this application. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the double-curtain insulated roller shutter door provided in the embodiments of this application. Figure 2 ;

[0025] Figure 3 This is a bottom schematic diagram of the double-curtain insulated roller shutter door provided in the embodiments of this application;

[0026] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a side view of a double-curtain insulated roller shutter door provided in an embodiment of this application;

[0028] Figure 6 yes Figure 5 Enlarged diagram of point B in the middle.

[0029] Explanation of reference numerals in the attached figures

[0030] 100 - Door frame;

[0031] 10-Columns;

[0032] 11-orbit;

[0033] 11a - Guide groove;

[0034] 11b - Cavity;

[0035] 12-Slide rail;

[0036] 12a - Cavity;

[0037] 13-Door curtain seal;

[0038] 14-Rail sealing strip;

[0039] 20-Insulated door curtain;

[0040] 30-High-speed door curtain;

[0041] 40 - Drive unit;

[0042] 50 - Heating wire;

[0043] 60 - Doorway sealing module;

[0044] 61-Vertical sealing strip;

[0045] 611-Sponge Sealing Bracket;

[0046] 612 - Sealing sponge strip;

[0047] 613 - Sealing rubber sheet;

[0048] 62 - Horizontal partition strip. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0050] Figure 1 This is a schematic diagram of the structure of the double-curtain insulated roller shutter door provided in the embodiments of this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the double-curtain insulated roller shutter door provided in the embodiments of this application. Figure 2 ; Figure 3 This is a bottom schematic diagram of the double-curtain insulated roller shutter door provided in the embodiments of this application; Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0051] Figure 5 This is a side view of a double-curtain insulated roller shutter door provided in an embodiment of this application; Figure 6 yes Figure 5 Enlarged diagram of point B in the middle.

[0052] See Figures 1-4 As shown, this application embodiment provides a double-curtain insulated roller shutter door, which adopts a double-door structure and mainly includes a door frame 100, an insulated door curtain 20, and a high-speed door curtain 30, wherein:

[0053] The door frame 100 includes two columns 10 spaced apart in the horizontal direction, and an insulated door curtain 20 and a high-speed door curtain 30 are disposed between the two columns 10. The insulated door curtain 20 is disposed near the inside of the cold storage, and the high-speed door curtain 30 is disposed near the outside of the cold storage.

[0054] The top of the column 10 is equipped with a drive device 40 that is connected to the insulated curtain 20 and the high-speed curtain 30. The drive device 40 is used to drive the insulated curtain 20 and the high-speed curtain 30 to lift or lower, thereby opening or closing the cold storage.

[0055] The insulated door curtain 20 has a multi-layer structure, including outer protective layers on the front and back sides and an inner insulated liner layer placed between the two outer protective layers. The outer protective layers are made of flexible polymer materials, such as PVC. The inner insulated liner layer is made of flexible heat-insulating material, which enables the insulated door curtain 20 to have good heat insulation properties, excellent heat preservation performance, and good material stability. Moreover, the insulated door curtain 20 is made of flexible material and can be bent, so it can be used with most drive devices 40 of lifting doors and roller shutters.

[0056] In daily use, the insulated door curtain 20 is typically either normally closed or normally open. It is opened at the start of the workday and closed at the end. The high-speed door curtain 30 opens and closes automatically during operation; it opens when a material cart needs to pass through the cold storage door and closes afterward. It can be used in conjunction with a radar sensor to detect objects near the cold storage door, thus enabling automatic opening and closing of the high-speed door, making it very convenient to use.

[0057] The double-curtain insulated roller shutter door provided in this application embodiment uses an insulated door curtain 20 to replace the heavy sliding door of the cold storage. Compared with the metal door body, the insulated door curtain 20 is less prone to freezing. Moreover, the insulated door curtain 20 is lightweight, allowing people inside the cold storage to escape by manually lifting and opening it. Furthermore, the insulated door curtain 20 can be manually destroyed; even if it cannot be opened, escape can still be achieved by breaking it. It also has a low failure rate and is very convenient for later maintenance.

[0058] Specifically, the support column 10 includes a track 11 and a slide rail 12. The side end of the insulated door curtain 20 is slidably mounted in the guide groove 11a of the track 11, and the high-speed door curtain 30 is slidably mounted in the slide groove of the slide rail 12. The insulated door curtain 20 and the high-speed door curtain 30 slide in the guide groove 11a and the slide groove when they are in motion.

[0059] See Figure 4 As shown in this embodiment, the track 11 has two cavities 11b extending along the length of the track 11. Heating wires 50 are installed inside each cavity 11b, and the insulated curtain 20 is located between the two cavities 11b. The two cavities 11b are symmetrically distributed on opposite sides of the guide groove 11a, and are close to the opening of the guide groove 11a. The heating wires 50 can heat the front and rear sides of the insulated curtain 20 and maintain a constant temperature, preventing ice formation on the sides of the insulated curtain 20. Additionally, heating wires 50 can be pre-embedded below the ground surface below the insulated curtain 20 to prevent ice formation at the bottom. Furthermore, this structure effectively provides heat insulation and improves insulation performance.

[0060] See Figure 4As shown, a curtain seal 13 is provided within the guide groove 11a, extending along the length of the track 11. The opposite ends of the curtain seal 13 are connected to the inner walls of opposite sides of the guide groove 11a, and the side end of the curtain seal 13 has a receiving groove, within which the side end of the insulated curtain 20 is located. The curtain seal 13 is made of heat-insulating material, effectively isolating the guide groove 11a from the cold storage, reducing heat exchange within the guide groove 11a, providing effective heat insulation, and further improving heat preservation performance.

[0061] The slide rail 12 is made of heat-insulating material. Two track 11 sealing strips are symmetrically arranged on opposite sides of the slide groove opening. The ends of the two track 11 sealing strips respectively overlap the opposite sides of the high-speed door curtain 30. This isolates the slide rail from the cold storage and reduces heat exchange within the slide rail.

[0062] Similarly, cavities 12a are symmetrically provided on both sides of the groove opening of the slide rail 12, extending along the length of the slide rail 12. Heating wires 50 are also provided within the cavities 12a. The heating wires 50 heat the front and rear sides of the high-speed curtain 30 and maintain a constant temperature, preventing ice formation on the sides of the high-speed curtain 3. Additionally, heating wires 50 can be pre-embedded below the ground surface beneath the high-speed curtain 3 to prevent ice formation at the bottom. Furthermore, this structure effectively provides heat insulation and improves thermal insulation performance.

[0063] See Figures 4-6 As shown in the embodiment of this application, the double-curtain insulated roller shutter door also includes a door opening sealing module 60, which is provided between the insulated door curtain 20 and the high-speed door curtain 30. Specifically, the door opening sealing module 60 includes two vertical sealing strips 61 and a horizontal partition strip 62. The two vertical sealing strips 61 are respectively disposed on the side ends of the two columns 10, and are used to form a partition between the insulating track 11 and the slide rail 12 to reduce heat transfer. The horizontal partition strip 62 is disposed at the top of the vertical sealing strips 61, and its two ends are respectively connected to the two columns 10. The horizontal partition strip 62 is used to form a partition between the insulated door curtain 20 and the high-speed door curtain 30 to prevent heat transfer between the area between the insulated door curtain 20 and the high-speed door curtain 30 and the area where the top drive device 40 of the door frame 100 is located. See also Figure 2 As shown, a door opening sealing module 60 is provided on the side of the insulated door curtain 20 away from the high-speed door curtain 30. This door opening sealing module 60 is located to block heat transfer in the area between the insulated door curtain 20 and the wall. The door opening sealing module 60 can provide high-efficiency insulation and improve the insulation performance of the double-curtain insulated roller shutter door.

[0064] See Figure 4As shown, specifically, the vertical sealing strip 61 includes a sponge sealing bracket 611, a sealing sponge strip 612, and a sealing rubber sheet 613. The sealing sponge strip 612 is made of a material with low thermal conductivity. The sealing sponge strip 612 is embedded in the mounting groove of the sponge sealing bracket 611. The sealing rubber sheet 613 wraps around the outside of the sealing sponge strip 612, and the opposite ends of the sealing rubber sheet 613 are connected to the sponge sealing bracket 611. The elasticity of the sealing rubber sheet 613 fixes the sealing sponge strip 612 in the mounting groove, preventing it from falling off.

[0065] In the description of the embodiments of this application, it should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection or an indirect connection through an intermediate medium, or 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 application according to the specific circumstances. The terms "upper," "lower," "front," "rear," "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, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "multiple" means two or more, unless otherwise precisely specified.

[0066] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. For example, they can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A double-curtain insulated roller shutter door, characterized in that, Includes door frames, insulated door curtains, and high-speed door curtains; The door frame includes two columns spaced apart in the horizontal direction, and the heat-insulating door curtain and the high-speed door curtain are both arranged between the two columns; The top of the column is provided with a drive device that is connected to the heat-insulating door curtain and the high-speed door curtain; The insulated door curtain includes an insulated inner layer and an outer protective layer, wherein the insulated inner layer is disposed between the two outer protective layers; The column includes a track, and the side end of the heat-insulating door curtain is slidably installed in the guide groove of the track; The track has two cavities that extend along the length of the track. Heating wires are installed in the cavities, and the heat-insulating curtain is located between the two cavities. The guide groove is provided with a door curtain seal, which extends along the length of the track; The opposite ends of the door curtain seal are respectively connected to the inner walls of the opposite sides of the guide groove, and the side end of the door curtain seal has a receiving groove, and the side end of the heat-insulating door curtain is located in the receiving groove. The column includes a slide rail, and the high-speed door curtain slides in the slide rail groove. Two track sealing strips are symmetrically provided on opposite sides of the groove opening, and the ends of the two track sealing strips rest on opposite sides of the high-speed door curtain respectively. The double-curtain insulated roller shutter door also includes a door opening sealing module, and the door opening sealing module is provided between the insulated door curtain and the high-speed door curtain; The door opening sealing module includes two vertical sealing strips and one horizontal partition strip. The two vertical sealing strips are respectively disposed on the side ends of the two columns. The horizontal partition strip is disposed at the top of the vertical sealing strips, and the two ends of the horizontal partition strip are respectively connected to the two columns.

2. The double-curtain insulated roller shutter door according to claim 1, characterized in that, The two cavities are symmetrically distributed on opposite sides of the guide groove, and the cavities are close to the opening of the guide groove.

3. The double-curtain insulated roller shutter door according to claim 1, characterized in that, The vertical sealing strip includes a sponge sealing bracket, a sealing sponge strip, and a sealing rubber sheet. The sealing sponge strip is embedded in the mounting groove of the sponge sealing bracket, and the sealing rubber sheet wraps around the outside of the sealing sponge strip. The opposite ends of the sealing rubber sheet are connected to the sponge sealing bracket.

4. The double-curtain insulated roller shutter door according to claim 1, characterized in that, The door opening sealing module is provided on the side of the insulated door curtain away from the fast door curtain.

5. The double-curtain insulated roller shutter door according to claim 1, characterized in that, The inner heat-insulating layer is made of flexible heat-insulating material.

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