Cold storage heat preservation door

Abstract

The utility model discloses a cold storage heat preservation door, and relates to the field of heat preservation doors, the cold storage heat preservation door comprises a core heat preservation material, a door plate with the interior being vacuumized and a door frame hinged to the outer side of the door plate, a sealing strip used for ensuring tight attachment between the door plate and the door frame is fixedly arranged on the inner ring of the door frame, and a door lock mechanism is arranged in the middle of the door plate; an exhaust mechanism is arranged at the lower end of the door plate; the door frame is filled with the polyurethane foam, the heat conductivity coefficient is low, heat transfer can be effectively prevented, the heat preservation performance is improved, the energy consumption of the refrigeration house is effectively reduced, meanwhile, the material has high strength and elasticity, cracking and deformation are not likely to happen, the long-term stable heat preservation effect can be ensured, and the service life is prolonged; the production process and the use process of the device both meet the environmental protection requirement, sustainable development is promoted, the device effectively prevents cold air from leaking out through the exhaust mechanism, and meanwhile invasion of external hot air is also prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of thermal insulation doors, in particular to a cold storage thermal insulation door. BACKGROUND

[0002] The cold storage thermal insulation door is a door commonly used in cold storage equipment, freezer rooms and other refrigeration environment equipment, which plays a role of thermal insulation and sealing. Its main function is to ensure the stability of the temperature inside the cold storage, prevent energy loss caused by the exchange of cold and hot air, and meet the needs of goods entering and exiting and personnel passing through.

[0003] Traditional cold storage thermal insulation doors are mostly filled with polystyrene foam, but the thermal insulation performance is limited. The thermal conductivity of polystyrene foam is relatively high, which is difficult to meet the thermal insulation needs of ultra-low temperature cold storage. The durability is poor. After long-term use, the polyurethane foam is prone to aging, cracking and other problems, resulting in a decrease in thermal insulation performance. The environmental protection is poor. The production and use of polystyrene foam will release harmful substances and pollute the environment. CONTENT OF THE INVENTION

[0004] In order to improve the problems of limited thermal insulation performance, poor durability and poor environmental protection of the thermal insulation door, the present application provides a cold storage thermal insulation door.

[0005] The cold storage thermal insulation door provided by the present application adopts the following technical scheme:

[0006] A cold storage thermal insulation door, comprising a door panel with a core thermal insulation material inside which is vacuumized, and a door frame hinged to the outside of the door panel, a sealing strip is fixedly arranged on the inner ring of the door frame to ensure the close fit between the door panel and the door frame, a door lock mechanism is arranged in the middle of the door panel, and an exhaust mechanism is arranged at the lower end of the door panel.

[0007] Through the above technical scheme, the cold storage thermal insulation door is designed with core thermal insulation material, door frame and sealing strip, etc., to ensure the sealing and thermal insulation effect of the thermal insulation door.

[0008] Preferably, the door lock mechanism comprises a fixed plate fixed to the middle of the side of the door panel facing the cold storage, and a straight gear one rotatably arranged in the middle of the inner side of the fixed plate, one end of the straight gear one is fixedly provided with a rotating handle penetrating through the door panel, and the rotating handle can realize the opening or closing of the door panel and the door frame through the rotating action.

[0009] Through the above technical scheme, the door lock mechanism rotates the straight gear one through the rotating handle, to realize the rapid opening or closing function of the door panel and the door frame.

[0010] Preferably, the upper and lower ends of the straight gear one are engaged with a straight gear two rotating on the surface of the fixed plate, and a toothed plate engaged with the straight gear two is slidingly arranged on the inner side of the fixed plate.

[0011] By adopting the technical scheme, the straight gear one and the straight gear two mesh and rotate, and the sliding effect of the toothed plate inside the fixed plate is realized.

[0012] Preferably, the whole of the toothed plate is in the shape of "U", and a plug in the shape of "concave" is fixedly arranged on the side of the toothed plate close to the door frame, and a slot is fixedly arranged on the middle of the side of the door frame close to the plug.

[0013] By adopting the technical scheme, the plug is inserted into or separated from the slot when the toothed plate slides, and the quick locking or unlocking of the door plate and the door frame is realized.

[0014] Preferably, the air exhaust mechanism comprises a shell and a driving motor fixedly arranged in the middle of the shell, and a fan blade is fixed to one end of an output shaft of the driving motor.

[0015] By adopting the technical scheme, the driving motor drives the fan blade to rotate, the direction of the airflow is changed, the natural wind power is generated, and the air exhaust function is realized.

[0016] Preferably, a plurality of air exhaust holes are arranged on the side of the door plate close to the door lock mechanism, the plurality of air exhaust holes are matched with the side edges of the door frame, a tapered slot for air guiding is arranged on the lower end of the door plate at the shell, a circular hole is arranged in the middle of the tapered slot, and a supply pipe is fixedly arranged in the inside of the door frame and penetrates the circular hole and the air exhaust hole.

[0017] By adopting the technical scheme, the air exhaust mechanism is used to guide and exhaust the airflow, an air wall for blocking the cold air leakage and the hot air invasion can be formed, and the heat preservation effect is further improved.

[0018] Preferably, a rubber pad for blocking the cold air leakage is fixed to one end of the output shaft of the driving motor close to the door plate, and the rubber pad is made of elastic rubber material.

[0019] By adopting the technical scheme, the rubber pad made of elastic material can ensure the close fit with the door plate, and the heat preservation effect is improved.

[0020] Preferably, a plurality of hinges for hingedly connecting the door plate and the door frame are fixedly arranged on one side of the connection between the door plate and the door frame, and a vacuum valve for vacuumizing the material inside the door plate is embedded in the top end of the door frame.

[0021] By adopting the technical scheme, the vacuum pump regularly vacuums the material inside the door plate through the vacuum valve, the vacuum state of the material inside the door plate is ensured, and the overall heat preservation performance is further improved.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. By filling the inside of the door frame with polyurethane foam, which has a low thermal conductivity, heat transfer can be effectively prevented, thus improving the insulation performance and reducing the energy consumption of the cold storage. At the same time, the material has high strength and elasticity, is not easy to crack or deform, and can ensure long-term stable insulation effect and extend service life. In addition, the production and use of this device meet environmental protection requirements and promote sustainable development.

[0024] 2. By driving the first spur gear to rotate through the turntable handle, the second spur gear drives the toothed plate to slide inside the fixed plate, thereby allowing the insert block to be quickly inserted into or detached from the slot cavity. This enables the heat preservation door to open and close rapidly, improving the convenience and efficiency of the heat preservation door opening and closing operation, reducing the loss of cold or hot air, and further improving the heat preservation performance of the heat preservation door.

[0025] 3. By connecting the exhaust mechanism to the power supply, the fan blades rotate with the drive motor to generate natural wind. The airflow flows into the air supply duct through the circular hole. When the door panel and the door frame are at a 90-degree angle, the airflow discharged from the exhaust hole quickly diffuses in the space and forms a stable air wall, effectively blocking the leakage of cold air and preventing the intrusion of hot air from the outside. This helps to maintain the stability of the internal environment of the cold storage and protect the quality of the stored goods. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the right axonometric projection of this application;

[0027] Figure 2 This is a frontal axonometric schematic diagram of this application;

[0028] Figure 3 This is a schematic diagram of the door lock mechanism in this application;

[0029] Figure 4 This is a rear-view axonometric schematic diagram of this application;

[0030] Figure 5 This is a schematic diagram of the ventilation mechanism in this application;

[0031] Figure 6 This is a schematic diagram of the internal structure of the door panel in this application.

[0032] Attached reference numerals: 1. Door panel; 2. Door lock mechanism; 3. Ventilation mechanism; 4. Door handle; 5. Hinge; 6. Vacuum valve; 7. Door frame; 8. Sealing strip;

[0033] 201. Turntable handle; 202. Fixing plate; 203. Gear plate; 204. Spur gear one; 205. Spur gear two; 206. Insert block; 207. Slot;

[0034] 301. Exhaust vent; 302. Conical groove; 303. Circular hole; 304. Rubber pad; 305. Housing; 306. Drive motor; 307. Fan blade; 308. Air supply duct. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1 - Figure 6 This application will be described in further detail.

[0036] This application discloses a cold storage insulated door.

[0037] Reference Figure 1 A cold storage insulated door includes a door panel 1 and a hinged door frame 7 on the outer side of the door panel 1. The door panel 1 uses a vacuum insulation board as the core insulation material. The vacuum insulation board is composed of a porous core material and a high-barrier film. The interior is vacuum-sealed, resulting in extremely low thermal conductivity, which can effectively block heat transfer. The vacuum insulation board is cut to the required size and its surface is treated to improve its bonding strength with the door panel 1. The treated vacuum insulation board is then bonded to the door panel 1 to form a composite door panel 1. The door frame 7 uses a thermally broken aluminum alloy profile, and the profile is filled with polyurethane foam to further improve the insulation performance. The composite door panel 1 is assembled with the door frame 7, and polyurethane foam is filled inside the door frame 7. A sealing strip 8 is fixedly installed on the inner ring of the door frame 7. The sealing strip 8 is made of EPDM rubber, which has good elasticity and low-temperature resistance, ensuring the sealing between the door and the door frame 7. After the sealing strip 8 is installed, the above components are tested as a whole to ensure that the performance indicators of the insulated door meet the requirements.

[0038] Reference Figure 2 - Figure 3 The door lock mechanism 2 is located in the middle of the door panel 1. The door lock mechanism 2 includes a fixed plate 202 fixed in the middle of the side of the door panel 1 facing the cold storage, and a spur gear 204 rotatably located in the middle of the inner side of the fixed plate 202. The spur gear 204 is rotatably connected to the fixed plate 202 through a bushing, so that the spur gear 204 can rotate smoothly and steadily on the fixed plate 202. A turntable handle 201 is fixedly installed on the side of the spur gear 204 near the door panel 1. One end of the turntable handle 201 passes through the door panel 1 and the fixed plate 202. By rotating the turntable handle 201, the door panel 1 and the door frame 7 can be opened or closed.

[0039] Two spur gears 205 are rotatably mounted on fixed plates 202 located above and below spur gear 204 via bushings. The teeth at opposite ends of the two spur gears 205 mesh with spur gear 204. Two rectangular sliding grooves are provided on the inner top and bottom surfaces of the fixed plates 202. The upper and lower ends of the toothed plate 203 slide on the inner side of the fixed plates 202, and the rack of the inner ring of the toothed plate 203 meshes with the teeth on the opposite side of the two spur gears 205. The toothed plate 203 is U-shaped. The insert 206 is fixed on the side of the toothed plate 203 near the door frame 7. The insert 206 is U-shaped. The slot 207 is fixed in the middle of the side of the door frame 7 near the insert 206. The inner cavity shape of the slot 207 matches the protrusion of the insert 206. The insert 206 and the slot 207 are made of stainless steel, which is sturdy, durable, rust-proof and corrosion-proof.

[0040] When the heat preservation door needs to be opened, rotating the turntable handle 201 drives the spur gear 204 to rotate, causing the two spur gears 205 to drive the toothed plate 203 to slide inside the fixed plate 202. At this time, the insert 206 fixed to the toothed plate 203 disengages from the slot 207, allowing the heat preservation door to open quickly. By rotating the turntable handle 201 in the opposite direction, the insert 206 is driven to re-insert into the inner cavity of the slot 207, allowing the heat preservation door to close quickly.

[0041] Reference Figure 4 - Figure 6 The exhaust mechanism 3 is fixed to the lower end of the door panel 1 on the side away from the cold storage. The exhaust mechanism 3 includes a housing 305 and a drive motor 306 fixed in the middle of the housing 305. The middle part of the fan blade 307 is fixed on the output shaft of the drive motor 306. Multiple exhaust holes 301 are opened on the side of the door panel 1 near the door lock mechanism 2. The exhaust holes 301 are small holes inclined at 45 degrees. A conical groove 302 is opened at the lower end of the door panel 1 at the housing 305. The conical groove 302 is conical in shape. A circular hole 303 is opened in the... At the tip of the conical groove 302, a HEPA filter is fixed to the surface of the circular hole 303, which can remove particulate matter in the air and ensure that the air entering the room is clean and safe. The two ends of the air supply duct 308 are respectively fixed to one end of the exhaust hole 301 and one end of the circular hole 303. One end of the rubber pad 304 is located inside the air supply duct 308 and is in contact with the inner wall of the door panel 1. The other end of the rubber pad 304 is fixed to the end of the output shaft of the drive motor 306 near the door panel 1. The overall shape of the rubber pad 304 is as follows: Figure 5 As shown, the rubber pad 304 is a rubber material with a certain degree of elasticity. The diameter of the end of the rubber pad 304 located inside the air supply duct 308 is larger than the diameter of the circular hole 303.

[0042] When goods need to be moved in the cold storage, the exhaust mechanism 3 is powered on. The output shaft of the drive motor 306 drives the fan blades 307 to rotate, generating natural wind. The airflow is guided by the conical groove 302 to the circular hole 303. The rubber pad 304 inside the air supply duct 308 is stretched and separated from the inner wall of the door panel 1. At this time, the airflow can flow through the circular hole 303 into the air supply duct 308 and then be discharged through the exhaust hole 301. When the door panel 1 and the door frame 7 are at a 90-degree angle, the airflow discharged from the exhaust hole 301 and the door frame 7 form a 45-degree air wall to achieve an air seal, which can effectively reduce the leakage of cold air and the intrusion of hot air. When the door panel 1 and the door frame 7 are closed, the power supply of the exhaust mechanism 3 is disconnected. At this time, the drive motor 306 stops rotating, and the rubber pad 304 inside the air supply duct 308 rebounds and adheres to the inner wall of the door panel 1, further blocking the leakage of cold air and the intrusion of hot air.

[0043] Multiple hinges 5 are fixed at the connection between one side of the door panel 1 and the other side of the door frame 7. The hinges 5 are used to connect the door panel 1 and the door frame 7 and allow them to rotate relative to each other. The door handle 4 is fixed on the side of the door panel 1 away from the hinges 5. The vacuum valve 6 is embedded in the top of the door frame 7. The vacuum valve 6 uses a VV262-NPT vacuum nozzle produced by Langfang Juhui Lian Fluid Technology Co., Ltd. The vacuum valve 6 is used to control the connection and disconnection between the vacuum pump and the door panel 1, and can effectively isolate the material inside the door panel 1 from the external environment, preventing external air or other gases from entering the material inside the door panel 1, thereby protecting the vacuum state of the material inside the door panel 1. Before using this device, the hinges 5 need to be installed on the side of the door panel 1 connected to the door frame 7, and the sealing strip 8 needs to be installed on the inside of the door frame 7. The vacuum pump is used to extract the air from the material inside the door panel 1 through the vacuum valve 6.

[0044] The implementation principle of a cold storage insulated door according to an embodiment of this application is as follows: Before use, the door panel 1 is connected and fixed to the door frame 7 by hinge 5. A sealing strip 8 is installed on the inside of the door frame 7. A vacuum pump is used to extract the air from the material inside the door panel 1 through the vacuum valve 6. When goods need to be moved in the cold storage, the rotary handle 201 of the door lock mechanism 2 is rotated, and the insert 206 is disengaged from the slot 207 through gear transmission, allowing the insulated door to open quickly. At the same time, the power is turned on to start the exhaust mechanism 3, and the drive motor 306 drives the fan blades 307 to rotate to generate natural wind. The airflow is guided through the conical groove 302 to the circular hole 30. 3. At the same time, the rubber pad 304 inside the air supply duct 308 is stretched and separated from the inner wall of the door panel 1, allowing airflow to enter the air supply duct 308 through the circular hole 303 and then be discharged through the exhaust hole. When the door panel 1 is opened to a 90-degree angle with the door frame 7, the airflow discharged from the exhaust hole 301 forms a 45-degree air wall with the door frame 7. When the handling stops, the turntable handle 201 is rotated in the opposite direction to make the insert 206 re-insert into the inner cavity of the slot 207, the heat preservation door closes quickly, the power supply of the exhaust mechanism 3 is disconnected, the drive motor 306 stops rotating, the rubber pad 304 rebounds and sticks to the inner wall of the door panel 1 again, further blocking the exchange of hot and cold airflow.

[0045] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A cold storage insulated door, characterized in that: The door panel (1) with a vacuum inside is made of core insulation material and a door frame (7) hinged to the outside of the door panel (1). The inner ring of the door frame (7) is fixedly provided with a sealing strip (8) to ensure a tight fit between the door panel (1) and the door frame (7). The door panel (1) is provided with a door lock mechanism (2) in the middle and a ventilation mechanism (3) at the lower end of the door panel (1).

2. The cold storage insulation door according to claim 1, characterized in that: The door lock mechanism (2) includes a fixed plate (202) fixed in the middle of the side of the door panel (1) facing the cold storage, and a spur gear (204) rotatably disposed in the middle of the inner side of the fixed plate (202). A turntable handle (201) with one end penetrating the door panel (1) is fixedly disposed on the side of the spur gear (204) near the door panel (1). The turntable handle (201) can realize the opening or closing of the door panel (1) and the door frame (7) by rotating.

3. A cold storage insulation door according to claim 2, characterized in that: Both ends of the first spur gear (204) are meshed with the second spur gear (205) that rotates with the surface of the fixed plate (202), and the inner side of the fixed plate (202) is slidably provided with a toothed plate (203) that meshes with the second spur gear (205).

4. A cold storage insulation door according to claim 3, characterized in that: The toothed plate (203) is U-shaped. A U-shaped insert (206) is fixedly provided on the side of the toothed plate (203) near the door frame (7). A slot (207) is fixedly provided in the middle of the side of the door frame (7) near the insert (206).

5. A cold storage insulation door according to claim 1, characterized in that: The exhaust mechanism (3) includes a housing (305) and a drive motor (306) fixedly disposed in the middle of the housing (305). One end of the output shaft of the drive motor (306) is fixed with a fan blade (307).

6. A cold storage insulation door according to claim 1, characterized in that: The door panel (1) has several ventilation holes (301) on the side near the door lock mechanism (2). The ventilation holes (301) match the side of the door frame. The lower end of the door panel (1) is provided with a conical groove (302) for air guidance at the outer shell (305). A circular hole (303) is provided in the middle of the conical groove (302). An air supply pipe (308) communicating with the circular hole (303) and the ventilation holes (301) is fixedly installed inside the door frame (7).

7. A cold storage insulation door according to claim 5, characterized in that: The output shaft of the drive motor (306) near the door panel (1) is fixedly provided with a rubber pad (304) for preventing cold air leakage. The rubber pad (304) is made of elastic rubber.

8. A cold storage insulation door according to claim 1, characterized in that: Multiple hinges (5) for hinged connection between the door panel (1) and the door frame (7) are fixedly provided on one side. A vacuum valve (6) for vacuuming the material inside the door panel (1) is embedded in the top of the door frame (7).

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