Automatic defrosting freezer door

Abstract

The utility model discloses an automatic defrosting formula refrigeration house door belongs to refrigeration house door technical field, including the door board, the upper and lower of door board outer wall all are established with the sliding slot, the left end of door board upper sliding slot is established with the first square groove, and the fixedly connected with servo motor in square groove, and the output fixedly connected with double thread bar of servo motor, and double thread bar is located in the sliding slot and is rotatably connected, and the both ends of double thread bar are all threadedly connected with the sliding block, and the both ends of sliding block bottom are all fixedly connected with the vertical board, and the both ends of vertical board inner wall are all fixedly connected with the fixed plate, and the middle part of fixed plate far from the outer wall of vertical board one side is established with the rectangular groove, and the spring is uniformly fixedly connected in rectangular groove, and the outer end fixedly connected with scraper of spring. This automatic defrosting formula refrigeration house door moves through double thread bar and drives sliding block and vertical board, and spring makes scraper always adhere to door board, and effectively shovels frost layer and ice layer, and the cleaning brush on vertical board moves with it, and secondary cleaning residual frost, avoid frost again, prolong life.

Description

Technical Field

[0001] This utility model relates to the field of cold storage door technology, specifically to an automatic defrosting cold storage door. Background Technology

[0002] Cold storage doors are a core component of cold chain systems, specifically designed for low-temperature storage. They feature excellent insulation, tight sealing, safety, durability, and intelligent operation. Utilizing high-density polyurethane foam core material or environmentally friendly insulation layers, combined with magnetic sealing strips and heating / anti-freeze devices, they effectively prevent cold air loss and frost buildup, ensuring stable operation under extreme temperature variations. The door structure is impact-resistant and corrosion-resistant, supporting multiple opening methods such as electric lifting, sliding, or high-speed rolling. Integrating intelligent technologies like infrared sensing and IoT control enhances ease of operation and safety. Furthermore, their energy-saving design reduces energy consumption by over 20%, meeting environmental standards. Cold storage doors are widely used in food cold chain, pharmaceutical warehousing, industrial refrigeration, and logistics centers. They are crucial equipment for ensuring product quality and improving cold chain efficiency. When selecting a cold storage door, it's essential to consider the cold storage's size, temperature requirements, and usage frequency, while also taking into account wind pressure resistance, ease of cleaning, and system compatibility to provide reliable protection for low-temperature storage.

[0003] For example, patent CN218029819U discloses a heat-insulating cold storage door, including a cold storage door, which is installed on the surface of the cold storage wall. Door bolts are movably installed on the front of the cold storage door and on both sides of the door push rod. Raised plates are fixedly installed on the front of the door push rod and at the top and bottom of the door push rod. Support plates are fixedly installed on the surface of the raised plates. A sliding plate is fixedly installed on the end of the support plate away from the raised plates. An insulation board is fixedly installed inside the cold storage door. A sealing plate is fixedly installed on the back of the cold storage door. However, when using existing equipment, frost on the surface of the cold storage door will further condense into an ice layer when the temperature is low. The ice layer is hard and more difficult to remove than ordinary frost, requiring longer processing time and higher energy consumption, yet it is difficult to achieve the ideal de-icing effect. The ice residue will further affect the sealing performance and normal opening and closing of the cold storage door. Furthermore, since the cold storage door is located at the interface between the cold storage and the outside world, the temperature in its vicinity is constantly dropping. This makes it very easy for the surface of the cold storage door to quickly re-frost during or after defrosting, forming a continuous frost cycle. This leads to untimely defrosting and continuous accumulation of frost, which not only increases the burden on the refrigeration system but also seriously affects the service life of the cold storage door and the overall operating efficiency of the cold storage.

[0004] Therefore, in order to solve this problem, we propose an automatic defrosting cold storage door. Utility Model Content

[0005] The purpose of this invention is to provide an automatic defrosting cold storage door to solve the problem mentioned in the background art. When the frost on the surface of the cold storage door is at a low temperature, it will further condense into an ice layer. The ice layer is hard and more difficult to remove than ordinary frost, requiring longer processing time and higher energy consumption, yet it is difficult to achieve the ideal defrosting effect. The ice residue will further affect the sealing performance and normal opening and closing of the cold storage door. Furthermore, since the cold storage door is located at the interface between the cold storage and the outside world, the temperature in its vicinity is constantly dropping. This makes it very easy for the surface of the cold storage door to quickly frost again during or after defrosting, forming a continuous frost cycle. This leads to untimely defrosting and continuous accumulation of frost, which not only increases the burden on the refrigeration system but also seriously affects the service life of the cold storage door and the overall operating efficiency of the cold storage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic defrosting cold storage door, including a door panel, with sliding grooves on both the upper and lower sides of the outer wall of the door panel. A first square groove is formed at the left end of the upper sliding groove of the door panel. A servo motor is fixedly connected in the square groove. A double threaded rod is fixedly connected to the output end of the servo motor. The double threaded rod is rotatably connected within the sliding groove. A slider is threaded to both ends of the double threaded rod. A vertical plate is fixedly connected to both ends of the bottom of the slider. A fixing plate is fixedly connected to both ends of the inner wall of the vertical plate. A rectangular groove is formed in the middle of the outer wall of the fixing plate on the side away from the vertical plate. Springs are uniformly fixedly connected in the rectangular groove. A scraper is fixedly connected to the outer end of the spring. The side of the scraper away from the spring abuts against the outer wall of the door panel.

[0007] Furthermore, fixing components are symmetrically arranged on both sides of the upper and lower central axis of the inner wall of the upright plate, and rotating rods are rotatably connected to the fixing components, with cleaning brushes fixedly connected to the rotating rods.

[0008] Furthermore, the top and bottom of the scraper are fixedly connected to support blocks, and a guide rod is fixedly connected to the outer wall of the support block near the fixed plate, and the guide rod passes through the top and bottom of the fixed plate.

[0009] Furthermore, sealing sponges are fixedly connected to the top and bottom of the inner wall of the sliding groove on the door panel, and the sealing sponges penetrate through the top and bottom of the slider.

[0010] Furthermore, the door panel has an internal mounting groove located between the upper and lower sliding grooves of the door panel. A second square groove is provided on the left side of the lower sliding groove of the door panel. A heating element is fixedly connected in the second square groove. A heating wire is fixedly connected to the output end of the heating element, and the heating wire is located in the mounting groove. The heating wire and the mounting groove are S-shaped.

[0011] Furthermore, a handle is fixedly connected to the left side of the front outer wall of the door panel, a display screen is fixedly connected to the upper part of the outer wall of the handle, and a control panel is fixedly connected to the lower part of the outer wall of the handle.

[0012] Compared with the prior art, the beneficial effects of this utility model are: an automatic defrosting cold storage door, adopting a novel structural design, the specific details of which are as follows:

[0013] (1) The automatic defrosting cold storage door is driven by a servo motor to rotate the double threaded rod, which in turn moves the slider and the upright plate, so that the scraper is in close contact with the outer wall of the door panel. The elasticity of the spring ensures that the scraper is always in contact with the door panel, which can effectively remove the frost layer and hard ice layer, solving the problem of incomplete defrosting and ice layer residue affecting the seal in traditional methods. The cleaning brush on the upright plate moves with the upright plate and can perform secondary cleaning on the surface of the door panel, remove the frost residue left by the scraper, improve the cleanliness of the door panel, and prevent frost residue from accumulating and frosting again. The scraper passes through the fixed plate through the guide rod connected by the support block, which restricts the movement direction of the scraper, prevents it from deviating during the defrosting process, ensures the stability of the defrosting trajectory, and extends the service life of the components.

[0014] (2) The automatic defrosting cold storage door has an S-shaped heating wire in the mounting groove inside the door panel that matches the shape of the mounting groove. The heating wire is powered by the heating element in the second square groove below the door panel and generates heat. The S-shaped heating wire can maximize the contact area with the inside of the door panel, so that the heat can be evenly transferred to the entire outer wall surface of the door panel through heat conduction, effectively raising the surface temperature of the door panel to a level higher than the dew point.

[0015] Furthermore, the sealing sponge inside the chute penetrates the slider, filling the gap between the slider and the chute, reducing the exchange of hot and cold air inside and outside the cold storage, reducing energy consumption, and preventing frost buildup inside the chute from affecting the slider's movement. The control panel on the handle can control components such as the servo motor and heating elements, and the display screen can provide feedback on the operating status, enabling intelligent operation and improving ease of use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the upright plate of this utility model;

[0019] Figure 4 This is an exploded view of the upright plate of this utility model;

[0020] Figure 5 This is an exploded view of the fixing plate of this utility model;

[0021] Figure 6 For the present utility model Figure 5 Enlarged view of point A in the middle;

[0022] Figure 7 This is a three-dimensional cross-sectional view of the door panel of this utility model.

[0023] In the diagram: 1. Door panel; 11. Double threaded rod; 12. Slider; 13. Vertical plate; 14. Fixing component; 141. Cleaning brush; 15. Fixing plate; 151. Spring; 152. Scraper; 16. Support block; 17. Sealing sponge; 2. Mounting groove; 21. Heating element; 22. Heating wire; 3. Handle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides the following technical solution: an automatic defrosting cold storage door.

[0026] Example 1: An automatic defrosting cold storage door uses a double-threaded rod 11 connected to a slider 12 to adjust the horizontal position of the upright plate 13. This allows a scraper 152 to remove frost and ice from the outer wall of the door panel 1. A cleaning brush 141 then cleans the crystals on the outer wall of the door panel 1. A sealing sponge 17 seals the sliding track to prevent cold air from leaking from the inside of the cold storage to the outer wall. This prevents frost on the door surface from condensing into ice at lower temperatures. Ice is harder to remove than ordinary frost, requiring longer processing time and higher energy consumption, yet still failing to achieve the desired defrosting effect. The remaining ice can further affect the sealing performance and normal opening and closing of the cold storage door. Figure 1 - Figure 6As shown, an automatic defrosting cold storage door includes a door panel 1. The upper and lower sides of the outer wall of the door panel 1 are provided with sliding grooves. A first square groove is formed at the left end of the upper sliding groove of the door panel 1. A servo motor is fixedly connected within the square groove. A double-threaded rod 11 is fixedly connected to the output end of the servo motor. The double-threaded rod 11 is rotatably connected within the sliding groove. Slider blocks 12 are threadedly connected to both ends of the double-threaded rod 11. Vertical plates 13 are fixedly connected to both ends of the bottom of the sliders 12. Fixed plates 15 are fixedly connected to both ends of the inner wall of the vertical plates 13. A rectangular groove is formed in the middle of the outer wall of the fixed plate 15 on the side away from the vertical plates 13. Springs 151 are uniformly fixedly connected within the rectangular groove. A scraper 152 is fixedly connected to the outer end of the door panel 1. The side of the scraper 152 away from the spring 151 abuts against the outer wall of the door panel 1. Fixing members 14 are symmetrically arranged on both sides of the upper and lower central axis of the inner wall of the vertical plate 13. A rotating rod is rotatably connected to the fixing member 14. A cleaning brush 141 is fixedly connected to the rotating rod. A support block 16 is fixedly connected to the top and bottom of the scraper 152. A guide rod is fixedly connected to the outer wall of the support block 16 near the fixing plate 15. The guide rod passes through the top and bottom of the fixing plate 15. A sealing sponge 17 is fixedly connected to the top and bottom of the inner wall of the sliding groove on the door panel 1. The sealing sponge 17 passes through the top and bottom of the slider 12.

[0027] When the defrosting program is started, the servo motor in the first square groove above the door panel 1 operates, driving the double threaded rod 11 to rotate in the slide. Since the threads at both ends of the double threaded rod 11 are opposite, the sliders 12 at both ends will move horizontally in opposite directions along the slide according to the forward and reverse rotation of the motor, thereby driving the upright plate 13 at the bottom of the slider 12 to move synchronously. When the upright plate 13 moves, the fixed plate 15 pushes the scraper 152 to fit against the outer wall of the door panel 1 through the spring 151. As the upright plate 13 moves, it scrapes off the frost and ice layer on the surface. The guide rod restricts the scraper 152 to extend and retract only in the direction perpendicular to the door panel 1 through the support block 16 to ensure a stable scraping trajectory. At the same time, the cleaning brush 141 on the upright plate 13 rotates with the upright plate 13. Due to friction with the surface of the door panel 1, it cleans the surface of the door panel 1 after scraping.

[0028] Example 2: Unlike Example 1, heating element 21 is used to heat the heating wire 22 inside the door panel 1, and then heat is transferred to the door panel 1 through heat conduction. This prevents the door from being constantly cooled due to its location at the interface between the cold storage and the outside environment. This prevents the door surface from easily and quickly re-frostting during or after defrosting, creating a continuous frost cycle. This leads to delayed defrosting, continuous frost accumulation, increased burden on the refrigeration system, and serious impacts on the lifespan of the cold storage door and the overall operating efficiency of the cold storage. Figure 7As shown, a mounting groove 2 is provided inside the door panel 1, and the mounting groove 2 is located between the upper and lower sliding grooves of the door panel 1. A second square groove is provided on the left side of the lower sliding groove of the door panel 1. A heating element 21 is fixedly connected in the second square groove. A heating wire 22 is fixedly connected to the output end of the heating element 21, and the heating wire 22 is located in the mounting groove 2. The heating wire 22 and the mounting groove 2 are S-shaped. A handle 3 is fixedly connected to the left side of the front outer wall of the door panel 1. A display screen is fixedly connected to the upper part of the outer wall of the handle 3, and a control panel is fixedly connected to the lower part of the outer wall of the handle 3.

[0029] During or after defrosting, the heating element 21 can be activated via the control panel. The heating element 21 supplies power to the S-shaped heating wire 22 in the mounting groove 2. The S-shaped structure increases the contact area between the heating wire 22 and the door panel 1, uniformly raising the temperature of the door panel 1 so that the surface temperature is higher than the dew point, preventing water vapor from condensing into frost. When the slider 12 moves, the sealing sponge 17 in the groove always adheres to the upper and lower surfaces of the slider 12, blocking the airflow inside and outside the cold storage. At the same time, the elastic compensation of the spring 151 ensures that the scraper 152 can still make close contact when the surface of the door panel 1 is uneven, ensuring the defrosting effect.

[0030] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic defrosting cold storage door, comprising a door panel (1), characterized in that: The door panel (1) has a sliding groove on both the top and bottom of its outer wall. The left end of the upper sliding groove of the door panel (1) has a first square groove. A servo motor is fixedly connected in the square groove. A double threaded rod (11) is fixedly connected to the output end of the servo motor. The double threaded rod (11) is rotatably connected in the sliding groove. Both ends of the double threaded rod (11) are threadedly connected to sliders (12). Both ends of the bottom of the slider (12) are fixedly connected to upright plates (13). Both ends of the inner wall of the upright plate (13) are fixedly connected to fixing plates (15). A rectangular groove is opened in the middle of the outer wall of the side of the fixing plate (15) away from the upright plate (13). Springs (151) are evenly fixedly connected in the rectangular groove. A scraper (152) is fixedly connected to the outer end of the spring (151). The side of the scraper (152) away from the spring (151) abuts against the outer wall of the door panel (1).

2. The automatic defrosting cold storage door according to claim 1, characterized in that: Fixing members (14) are symmetrically arranged on both sides of the upper and lower central axis of the inner wall of the upright plate (13). A rotating rod is rotatably connected to the fixing member (14), and a cleaning brush (141) is fixedly connected to the rotating rod.

3. The automatic defrosting cold storage door according to claim 1, characterized in that: The top and bottom of the scraper (152) are fixedly connected to a support block (16). A guide rod is fixedly connected to the outer wall of the support block (16) near the fixed plate (15), and the guide rod passes through the top and bottom of the fixed plate (15).

4. The automatic defrosting cold storage door according to claim 1, characterized in that: The top and bottom of the inner wall of the sliding groove on the door panel (1) are fixedly connected with sealing sponges (17), and the sealing sponges (17) penetrate the top and bottom of the slider.

5. The automatic defrosting cold storage door according to claim 1, characterized in that: The door panel (1) has an installation groove (2) inside, and the installation groove (2) is located between the upper and lower sliding grooves of the door panel (1). A second square groove is provided on the left side of the lower sliding groove of the door panel (1). A heating element (21) is fixedly connected in the second square groove. A heating wire (22) is fixedly connected to the output end of the heating element (21). The heating wire (22) is located in the installation groove (2), and the heating wire (22) and the installation groove (2) are S-shaped.

6. The automatic defrosting cold storage door according to claim 1, characterized in that: A handle (3) is fixedly connected to the left side of the front outer wall of the door panel (1), a display screen is fixedly connected to the upper part of the outer wall of the handle (3), and a control panel is fixedly connected to the lower part of the outer wall of the handle (3).

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