Low-temperature green fresh-keeping storage device

Abstract

The application relates to the technical field of cold storage, in particular to a low-temperature green fresh-keeping storage device; the device comprises a pipe-type cold storage; the pipe-type cold storage further comprises a cold storage body, a copper pipe is fixedly installed in the cold storage body; a door is arranged on one side of the cold storage body; a condensing system is installed outside the cold storage body; the copper pipe is communicated with the condensing system; a screw rod is arranged above the copper pipe; through the arrangement of the scraper, the scraper can enter between the two fins under the drive of the telescopic unit, the scraper can defrost the two sides of the fins, the frost on the two sides of the fins is removed, the refrigerating capacity of the fins is improved, the defrosting can be carried out without stopping the work of the evaporator, the cold storage environment in the cold storage is avoided from being affected, manual defrosting is avoided, the labor intensity of the workers is reduced, the labor efficiency of the workers is improved, and the use of the application is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of cold storage technology, specifically a low-temperature green preservation storage device. Background Technology

[0002] Cold storage, also known as cold storage warehouse, is a warehouse that uses cooling facilities to create suitable humidity and low temperature conditions. It is a device with certain thermal insulation properties for storing and preserving fresh agricultural products. Cold storage can overcome the influence of climate and extend the storage period of various products to regulate market supply. The basic components of a cold storage include a refrigeration system, electrical control devices, and a thermal insulation structure for the outer layer of the warehouse. The refrigeration system, as the heart of the cold storage, generates cold energy to ensure the supply of cold source within the warehouse. The refrigeration system includes various refrigeration equipment.

[0003] In cold storage refrigeration equipment, pipe racks and air coolers are the main cold energy output devices. Cold storage facilities using pipe racks as refrigeration equipment are called pipe rack cold storage facilities, while those using air coolers are called air cooler cold storage facilities. Although air cooler cold storage facilities have the advantages of larger cooling capacity and faster cooling speed compared to pipe rack cold storage facilities, when storing fruits and vegetables, they are prone to severe moisture loss, causing the fruits and vegetables to dry out and shrivel. This not only greatly reduces the weight of the fruits and vegetables but also affects their taste, thus significantly reducing the economic profit of the products. In contrast, cold storage facilities using pipe racks for evaporators have advantages such as high heat transfer efficiency, uniform cooling, less refrigerant consumption, and energy saving. Therefore, in my country, pipe rack cold storage facilities are often chosen as the main refrigeration equipment for the preservation and storage of green fruits and vegetables.

[0004] However, when the temperature in existing pipe-type cold storage drops below zero, the moisture in the air will condense into frost, which adheres to the cooling pipes, increasing the resistance to heat exchange between the cooling capacity inside the pipes and the surrounding air, thus worsening the heat transfer effect. Common defrosting methods for pipe-type cold storage include: manual defrosting, electric defrosting, water spray defrosting, and hot air defrosting. Compared with manual defrosting, the other three defrosting methods require the cooling system to be shut down and the goods in the cold storage to be moved out before defrosting. Manual defrosting, on the other hand, involves workers using professional defrosting tools to enter the cold storage and defrost the cooling pipes without stopping the evaporator, thus not affecting the cooling of the cold storage and without needing to move the goods out of the cold storage. However, its defrosting speed is slow and the labor intensity of the workers is high.

[0005] In view of this, in order to overcome the above-mentioned technical problems, the present invention proposes a low-temperature green preservation and storage device, which solves the above-mentioned technical problems. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention proposes a low-temperature green preservation storage device. This invention utilizes a scraper that, driven by a telescopic unit, enters between two fins to defrost both sides of the fins, thereby removing frost and increasing the fins' cooling capacity. This defrosting can be performed without stopping the evaporator, thus avoiding disruption to the cold storage environment. Furthermore, it eliminates the need for manual defrosting, reducing labor intensity and increasing worker efficiency, thus effectively enhancing the usability of this invention.

[0007] The technical solution adopted by this invention to solve its technical problem is: a low-temperature green preservation storage device according to this invention, comprising a pipe-type cold storage; the pipe-type cold storage further comprises:

[0008] A cold storage unit includes a copper pipe assembly fixedly installed inside; a door is located on one side of the unit; a condensation system is installed on the outside of the unit; the copper pipe assembly is connected to the condensation system; a screw is located above the copper pipe assembly; the screw is slidably and sealingly connected to the unit; a servo motor is fixedly connected to the outer wall of the unit; the output end of the servo motor is fixedly connected to the screw; a slider is helically connected to the screw; the slider slides in contact with the upper wall of the unit; a scraper is located below the slider; the scraper is fixedly connected to the lower end of the slider via a telescopic unit; the telescopic unit is used to drive the scraper to rise and fall; fins are fixedly connected to the surface of the copper pipe assembly.

[0009] A barrier module is located between the copper busbar and the scraper; the barrier module is used to block the upward spread of cold air from below;

[0010] A controller is used to control the automatic operation of the entire pipe-type cold storage.

[0011] Preferably, the telescopic unit includes a fixed rod; the fixed rod is fixedly connected to the lower end of the slider; an installation groove is provided at the end of the fixed rod away from the slider; a telescopic rod is slidably connected in the installation groove; the scraper is installed at the end of the telescopic rod away from the installation groove; and an electromagnet is embedded in the bottom of the installation groove.

[0012] Preferably, a pressure block is fixedly connected to the lower end of the telescopic rod; a groove is formed on the surface of the pressure block; the scraper is slidably connected in the groove; and the scraper is fixedly connected to the bottom of the groove by a connecting spring.

[0013] Preferably, the groove is provided with three scrapers; the scrapers near the upper and lower end walls of the groove are triangular.

[0014] Preferably, a push spring is fixedly connected to the bottom of the mounting groove.

[0015] Preferably, the barrier module includes:

[0016] The cold storage unit has two baffles; through grooves are provided on both sides of the cold storage unit; the baffles are slidably and sealingly connected to the through grooves; both sides of the baffles are slidably and sealingly connected to the inner wall of the cold storage unit; a push plate is fixedly installed at one end of each baffle that is close to the other; a heating element is installed on the upper end of the push plate.

[0017] A drive unit is installed in a through slot; the drive unit is used to drive the barrier plates to move away from each other.

[0018] Preferably, the drive unit includes a spur gear; the spur gear is rotatably connected in a through slot; racks are fixedly connected to both sides of the baffle plate; the racks mesh with the spur gear; a drive motor is installed inside the cold storage body; the output shaft of the drive motor is fixedly connected to the spur gear.

[0019] Preferably, a storage groove is formed at the upper end of the two push plates that are close to each other; a sealing airbag is fixedly installed in the storage groove; the heating element is located inside the sealing airbag; the heating element is fixedly connected to the push plate; a tension spring is installed inside the sealing airbag; one end of the tension spring is fixedly connected to the push plate and the other end is fixedly connected to the sealing airbag; an electromagnetic plate is fixedly connected to the inner wall of the sealing airbag away from the push plate; and an exhaust port is formed at the upper end of the sealing airbag.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The present invention, through the design of the scraper, allows the scraper to enter between two fins under the drive of the telescopic unit, enabling the scraper to defrost both sides of the fins, thereby removing frost and increasing the cooling capacity of the fins. This not only allows defrosting without stopping the evaporator, thus avoiding impact on the refrigeration environment inside the cold storage, but also eliminates the need for manual defrosting, reducing the labor intensity of workers and improving their efficiency, thus effectively enhancing the use of the present invention.

[0022] 2. By incorporating a connecting spring, this invention enables the scraper to press tightly against the sidewall of the fin, thereby increasing the scraping force of the scraper on the frost condensed on the sidewall of the fin. This improves the scraping effect of the scraper on the frost condensed on both sides of the fin. Furthermore, when the scraper collides with the upper end of the fin under the action of the pressure block, the frost on the fin surface will break under the vibration. This not only causes the frost condensed on the upper end of the fin to break and fall off, but also causes the frost on the sidewall of the fin to break under the vibration. This reduces the adhesion between the frost and the fin, making it easier for the scraper to scrape off the frost, thus effectively improving the scraping effect of the scraper.

[0023] 3. By incorporating a heating element, the controller heats the push block before de-icing, melting the frost at the lower end of the push block and preventing the frost from sticking the two push plates together. This facilitates the drive unit in pulling the two barrier plates away from each other. Furthermore, the heating element is located above the push plates, allowing it to heat the space above the barrier plates, thereby melting the frost debris condensed on the surface of the telescopic rod. This reduces the accumulation of frost debris on the telescopic rod's surface, ensuring its normal operation and effectively improving the practical application effect of the invention. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a perspective view of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the present invention;

[0027] Figure 3 yes Figure 2 Sectional view at point AA;

[0028] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0029] Figure 5 yes Figure 3 Enlarged view of point C in the middle;

[0030] In the diagram: 1. Cold storage unit body; 11. Copper pipe; 111. Fin; 12. Door; 13. Through groove; 2. Screw; 21. Servo motor; 22. Slider; 23. Scraper; 24. Fixing rod; 241. Mounting groove; 242. Telescopic rod; 243. Electromagnet; 244. Push spring; 25. Pressure block; 251. Groove; 252. Connecting spring; 3. Baffle plate; 31. Push plate; 311. Heating element; 312. Storage tank; 32. Spur gear; 33. Rack; 34. Drive motor; 35. Sealing airbag; 351. Tension spring; 352. Electromagnetic plate; 353. Exhaust port. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figures 1 to 5 As shown, the low-temperature green preservation storage device of the present invention includes a pipe-type cold storage; the pipe-type cold storage further includes:

[0033] A cold storage unit 1 has a copper pipe 11 fixedly installed inside it. A door 12 is provided on one side of the cold storage unit 1. A condensation system is installed on the outside of the cold storage unit 1. The copper pipe 11 is connected to the condensation system. A screw 2 is provided above the copper pipe 11. The screw 2 is slidably and sealingly connected to the cold storage unit 1. A servo motor 21 is fixedly connected to the outer wall of the cold storage unit 1. The output end of the servo motor 21 is fixedly connected to the screw 2. A slider 22 is spirally connected to the screw 2. The slider 22 slides in contact with the upper wall of the cold storage unit 1. A scraper 23 is provided below the slider 22. The scraper 23 is fixedly connected to the lower end of the slider 22 via a telescopic unit. The telescopic unit is used to drive the scraper 23 to rise and fall. Fins 111 are fixedly connected to the surface of the copper pipe 11.

[0034] A blocking module is located between the copper pipe 11 and the scraper 23; the blocking module is used to block the upward spread of cold air below;

[0035] Controller, the controller is used to control the automatic operation of the entire pipe-type cold storage;

[0036] In existing technologies, when the temperature of a pipe-type cold storage unit drops below zero, the moisture in the air condenses into frost, which adheres to the cooling pipes, increasing the resistance to heat exchange between the cooling capacity inside the pipes and the surrounding air, thus worsening the heat transfer effect. Common defrosting methods for pipe-type cold storage units include: manual defrosting, electric defrosting, water spray defrosting, and hot air defrosting. Compared to manual defrosting, the other three defrosting methods require shutting down the cooling system and removing the goods from the cold storage unit before defrosting. Manual defrosting, on the other hand, involves workers using specialized defrosting tools to enter the cold storage unit and defrost the cooling pipes without stopping the evaporator, thus not affecting the cooling of the cold storage unit and without needing to remove the goods from the cold storage unit. However, its defrosting speed is slow, and the labor intensity of the workers is high.

[0037] During operation, the staff first turns on the condensation system to pre-cool the cold storage unit 1. After pre-cooling, the door 12 is opened, and goods are placed inside the cold storage unit 1. At this time, the staff sets the defrosting time through the controller, such as defrosting the copper pipes 11 inside the cold storage every five days. Because the fins 111 can accelerate the heat dissipation of the copper pipes 11, the frost formed by the condensation of moisture in the air is mainly concentrated on the surface of the fins 111. During defrosting, the controller controls the barrier module to open. At this time, the barrier module no longer obstructs the scraper 23, causing the controller to control the telescopic unit to push the scraper 23 down, so that the scraper 23 passes between the opened barrier modules, so that the scraper 23 is located between two adjacent copper pipes 11, and the scraper 23 is located at one end of the fins 111. At this time, as the scraper 23 moves downward, the scraper 23 pushes the frost condensed on the surface of the two copper pipes 11 downward. Since the height of the scraper 23 is greater than the height of the fins 111, when the lower end of the scraper 23 passes over the fins 111, the frost will fall down. When the scraper 23 is at its lower end, its upper end is still above the fins 111. At this time, the controller controls the servo motor 21 to run. Initially, the slider 22 is located on one side of the cold storage unit 1. Therefore, when the servo motor 21 drives the screw 2 to rotate, the screw 2 drives the slider 22 to move to the other side of the cold storage unit 1, causing the slider 22 to drive the scraper 23 to move to the other side of the cold storage unit 1. This causes the scraper 23 to move along the surface of the two copper busbars 11 to the other end of the two copper busbars 11, thus causing the scraper 23 to move along the surface of the two copper busbars 11 to the other end of the two copper busbars 11. 23 scrapes off the frost on both sides of the fins 111 of the two copper tubes 11 until the scraper 23 moves to the other end of the fins 111, at which point the frost on both sides of the fins 111 is completely scraped off. At this time, the controller controls the telescopic unit to retract, so that the telescopic unit drives the scraper 23 to rise above the barrier module. At this time, the controller controls the barrier module to close. Similarly, the next time defrosting occurs, the servo motor 21 rotates in the opposite direction, so that the servo motor 21 can drive the scraper 23 to scrape off the frost on the surface of the fins 111 in the opposite direction.

[0038] The present invention, through the arrangement of the scraper 23, allows the scraper 23 to enter between the two fins 111 under the drive of the telescopic unit, enabling the scraper 23 to defrost both sides of the fins 111, thereby removing the frost on both sides of the fins 111 and increasing the cooling capacity of the fins 111. Not only can defrosting be performed without stopping the operation of the evaporator, thus avoiding affecting the refrigeration environment in the cold storage, but it also avoids the need for manual entry for defrosting, reducing the labor intensity of workers and improving their work efficiency, thereby effectively improving the use of the present invention.

[0039] In one embodiment of the present invention, the telescopic unit includes a fixed rod 24; the fixed rod 24 is fixedly connected to the lower end of the slider 22; a mounting groove 241 is provided at the end of the fixed rod 24 away from the slider 22; a telescopic rod 242 is slidably connected in the mounting groove 241; a scraper 23 is installed at the end of the telescopic rod 242 away from the mounting groove 241; an electromagnet 243 is embedded in the bottom of the mounting groove 241.

[0040] During operation, initially, electromagnet 243 is energized, attracting telescopic rod 242 into mounting slot 241, causing the telescopic rod 242 to move scraper 23 above the barrier module. When the barrier module opens, the controller de-energizes electromagnet 243, causing the telescopic rod 242 to extend out of mounting slot 241 under its own weight. This allows the telescopic rod 242 to move scraper 23 through the opened barrier module to above copper busbar 11, until the telescopic rod 242 reaches its maximum extension. At this point, the lower end of scraper 23 passes over the lower end face of fin 111, and scraper 23 is positioned above fin 111. As the servo motor 21 rotates, it drives the slider 22 via the screw 2 and moves the fixed rod 24 to the other end of the fin 111. The fixed rod 24 then drives the scraper 23 to move along both sides of the fin 111 to the other end via the telescopic rod 242. The scraper 23 scrapes off the frost on the surface of the fin 111. When the scraper 23 is at the other end of the fin 111, the controller controls the electromagnet 243 to be energized. At this time, the electromagnet 243 attracts the telescopic rod 242 into the mounting groove 241 until the telescopic rod 242 contacts the bottom of the mounting groove 241. At this time, the controller controls the blocking module to close.

[0041] In one embodiment of the present invention, a pressure block 25 is fixedly connected to the lower end of the telescopic rod 242; a groove 251 is formed on the surface of the pressure block 25; the scraper 23 is slidably connected in the groove 251; the scraper 23 and the bottom of the groove 251 are fixedly connected by a connecting spring 252.

[0042] During operation, when the electromagnet 243 is de-energized, the telescopic rod 242, under its own weight, moves the pressure block 25 closer to the copper busbar 11 until the pressure block 25 passes between the two copper busbars 11. At this time, the pressure block 25 causes the scraper 23 to contact the upper end of the fin 111. The lower end of the scraper 23 then impacts the upper end of the fin 111. Since the lower end of the scraper 23 is sloped, after the scraper 23 impacts the upper end of the fin 111, the fin 111 obstructs the lower end surface of the scraper 23. As the scraper 23 continues to move downward under the action of the pressure block 25, the upper end surface of the fin 111... The scraper 23 is blocked and pushed into the groove 251 by the inclined surface of the scraper 23. At this time, the upper end face of the fin 111 slides in contact with the inclined surface of the scraper 23. The scraper 23 squeezes the connecting spring 252 and continuously enters the groove 251 until the side of the scraper 23 away from the groove 251 contacts the side wall of the fin 111. At this time, the scraper 23 is tightly attached to the side wall of the fin 111 under the pushing force of the connecting spring 252. As the telescopic rod 242 drives the scraper 23 to move to the other end of the fin 111, the scraper 23 can scrape off the frost on the side wall of the fin 111.

[0043] By incorporating a connecting spring 252, this invention enables the scraper 23 to press tightly against the sidewall of the fin 111, thereby increasing the scraping force of the scraper 23 on the frost condensed on the sidewall of the fin 111. This improves the scraping effect of the scraper 23 on the frost condensed on both sides of the fin 111. Furthermore, when the scraper 23 collides with the upper end of the fin 111 under the action of the pressure block 25, the frost on the surface of the fin 111 will break under the vibration. This not only causes the frost condensed on the upper end of the fin 111 to break and fall off, but also causes the frost on the sidewall of the fin 111 to break under the vibration. This reduces the adhesion between the frost and the fin 111, making it easier for the scraper 23 to scrape off the frost, thus effectively improving the scraping effect of the scraper 23.

[0044] In one embodiment of the present invention, three scrapers 23 are provided in the groove 251; the scrapers 23 near the upper and lower end walls of the groove 251 are triangular.

[0045] During operation, when the pressure block 25 drives the scraper 23 to contact the upper end of the fin 111, the scraper 23 near the lower end wall of the groove 251 contacts the upper end of the fin 111. Since the scrapers 23 on the upper and lower end walls of the groove 251 are triangular, and the two inclined surfaces of the scraper 23, which are far from each other, are close to the side wall of the groove 251, the scraper 23 near the lower end wall of the groove 251 collides with the upper end of the fin 111 through its inclined surface. This knocks off the frost that has condensed at the collision point on the upper end of the fin 111, causing the upper end of the fin 111 to press against the inclined surface of the scraper 23 and push the scraper 23 into the groove 251. At this time, the tip of the scraper 23 away from the groove 251 contacts the scraper 23. The scraper 23 in the middle has an arc surface at its lower end. When the scraper 23 located in the center of the groove 251 contacts the fin 111, the fin 111 pushes the arc surface of the scraper 23 located in the center of the groove 251, causing the scraper 23 located in the center of the groove 251 to enter the groove. The scraper 23, located in the center of the groove 251, extends until the side of the scraper 23 furthest from the groove 251 contacts the sidewall of the fin 111. When the lower scraper 23 passes over the fin 111, the connecting spring 252 pushes the scraper 23 out of the groove 251, causing the scraper 23 to scrape off the frost at the lower end of the fin 111 through its tip. At this time, the lower end of the upper scraper 23 contacts the upper end of the fin 111. As the telescopic rod 242 moves the scraper 23 through the pressure block 25, the scraper 23 continues to move. 3. Move to the other end of fin 111 so that telescopic rod 242 can push the upper and lower triangular scrapers 23 to scrape off the frost condensed on the upper and lower ends of fin 111, while the scraper 23 located in the center of groove 251 scrapes off the frost condensed on the side wall of fin 111, thereby reducing the frost condensed on the surface of fin 111, improving the cleaning effect of scraper 23 on the surface of fin 111, and thus effectively improving the practical application effect of the present invention.

[0046] In one embodiment of the present invention, a push spring 244 is fixedly connected to the bottom of the mounting groove 241;

[0047] During operation, initially, the electromagnet 243 attracts the telescopic rod 242 into the mounting slot 241. Under the magnetic attraction, the telescopic rod 242 compresses and pushes the spring 244 into the mounting slot 241. When the electromagnet 243 is de-energized, the spring 244, under its own restoring force, pushes the telescopic rod 242 out of the mounting slot 241. This causes the telescopic rod 242 to push the pressure block 25, which in turn drives the scraper 23, to quickly approach the copper tube 11. The pressure block 25, under the combined effect of its own weight and the pushing force of the spring 244, increases the impact force of the pressure block 25 and the scraper 23 on the upper end of the fin 111, thus increasing the breaking effect of frost condensed on the surface of the fin 111 and accelerating the surface cracking process. Frost removal: During prolonged use, frost debris easily adheres to the surface of the telescopic rod 242. As the telescopic rod 242 enters the mounting groove 241, the frost debris is blocked by the fixing rod 24 and accumulates at the opening of the mounting groove 241. This causes the frost debris at the opening of the mounting groove 241 to bond the telescopic rod 242 and the fixing rod 24 together. Therefore, by setting the spring 244, the telescopic rod 242 extends out of the mounting groove 241 under the push of the spring, preventing the adhesion force of frost debris on the telescopic rod 242 and the fixing rod 24 from exceeding the weight of the telescopic rod 242 and the pressure block 25, thereby ensuring the normal use of the telescopic rod 242 and effectively improving the practical application effect of the invention.

[0048] In one embodiment of the present invention, the blocking module includes:

[0049] The cold storage unit 1 has two baffle plates 3. The two side walls of the cold storage unit 1 are provided with through grooves 13. The baffle plates 3 are slidably and sealingly connected within the through grooves 13. The two sides of the baffle plates 3 are slidably and sealingly connected to the inner walls of the cold storage unit 1. A push plate 31 is fixedly installed at one end of each baffle plate 3 that is close to the other. A heating element 311 is installed on the upper end of the push plate 31.

[0050] A drive unit is installed in the through slot 13; the drive unit is used to drive the barrier plates 3 to move away from each other.

[0051] During operation, before pre-cooling, the operator controls the drive unit via the controller, causing the drive unit to move the two baffle plates 3 closer together. This, in turn, causes the two baffle plates 3 to move the push plates 31 closer together until they contact each other. At this point, the operator controls the refrigeration system via the controller, pre-cooling the interior of the cold storage unit 1. Because the baffle plates 3 and the through-slot 13 are in a sliding seal connection, cold air inside the cold storage unit 1 will not flow out from the through-slot 13, thus ensuring the refrigeration effect inside the cold storage unit 1. Furthermore, the two push plates 31 are in close contact, and there is also a sliding seal connection between the push plates 31 and the inner wall of the cold storage unit 1, further reducing the upward spread of cold air between the two push plates 31, thereby reducing the amount of frost condensation on the surface of the telescopic rod 242, ensuring the proper cooling of goods. During the storage process, frost will condense on the lower ends of the two push plates 31, causing them to stick together and affecting the opening of the two barrier plates 3. Therefore, this invention uses a heating element 311 to heat the push block before de-icing, melting the frost on the lower end of the push block and preventing the frost from sticking the two push plates 31 together. This makes it easier for the drive unit to pull the two barrier plates 3 away from each other. The heating element 311 is located on the upper end of the push plate 31, allowing it to heat the space above the barrier plates 3, thereby melting the frost debris condensed on the surface of the telescopic rod 242, reducing the accumulation of frost debris on the surface of the telescopic rod 242, ensuring the normal use of the telescopic rod 242, and effectively improving the practical application effect of this invention.

[0052] In one embodiment of the present invention, the drive unit includes a spur gear 32; the spur gear 32 is rotatably connected in the through groove 13; racks 33 are fixedly connected to both sides of the baffle plate 3; the racks 33 mesh with the spur gear 32; a drive motor 34 is installed inside the cold storage body 1; the output shaft of the drive motor 34 is fixedly connected to the spur gear 32.

[0053] During operation, when defrosting is required inside the cold storage unit 1, the controller controls the drive motor 34 to operate, causing the drive motor 34 to drive the spur gear 32 to rotate. This causes the spur gear 32 to mesh with the rack 33. Since the rack 33 is fixed to both sides of the baffle plate 3, during the meshing process between the teeth of the spur gear 32 and the tooth grooves of the rack 33, the teeth of the spur gear 32 can push the inner wall of the rack 33, causing the two baffle plates 3 to move away from each other. Because the baffle plate 3 and the cold storage unit 1 are in a sliding seal connection, and the push plate 31 is also in a sliding seal connection with the cold storage unit 1, a space is created between the baffle plate 3, the push plate 31, and the side wall of the cold storage unit 1, isolating the interior of the cold storage unit 1 and preventing cold air from entering. This not only allows cold air to escape to the outside, but also prevents frost from condensing between the spur gear 32 and the rack 33, thus ensuring the transmission meshing between the spur gear 32 and the rack 33, reducing wear between them, and improving their service life. The spur gear 32 and rack 33 are installed on both sides of the baffle plate 3, allowing both sides of the baffle plate 3 to bear force synchronously. This not only improves the strength of the baffle plate 3 and accelerates the separation of the baffle plates 3 from each other, but also ensures uniform force on both sides of the baffle plate 3, preventing uneven force on the baffle plate 3 from causing it to tilt and creating gaps between it and the cold storage unit 1. This ensures a smooth sliding seal between the baffle plate 3 and the cold storage unit 1, effectively improving the practical application effect of the invention.

[0054] In one embodiment of the present invention, a storage groove 312 is provided at the upper end of the two push plates 31 that are close to each other; a sealing airbag 35 is fixedly installed in the storage groove 312; a heating element 311 is located inside the sealing airbag 35; the heating element 311 is fixedly connected to the push plate 31; a tension spring 351 is installed inside the sealing airbag 35; one end of the tension spring 351 is fixedly connected to the push plate 31, and the other end is fixedly connected to the sealing airbag 35; an electromagnetic plate 352 is fixedly connected to the inner wall of the sealing airbag 35 away from the push plate 31; and an exhaust port 353 is provided at the upper end of the sealing airbag 35.

[0055] During operation, the magnetic poles of the two electromagnetic plates 352 are opposite. Before pre-cooling, the controller controls the drive motor 34 to drive the two baffle plates 3 closer together, causing the baffle plates 3 to drive the push plate 31 closer together, and causing the two sealing airbags 35 to come into contact until they press against each other, allowing the gas to escape through the exhaust port 353. At this time, the tension spring 351 inside the sealing airbag 35 contracts under the pressure of the sealing airbag 35 until the two push plates 31 come into contact. At this time, one of the electromagnetic plates 352 attracts the push plate 31 and drives the sealing airbag 35 to press the tension spring 351 closer to the push plate 31. Meanwhile, the other sealing airbag 35 extends under the restoring force of the tension spring 351 and enters the storage slot 312 of the energized electromagnetic plate 352, so that the sealing airbag 35 can block the gap between the two baffle plates 3, preventing cold air from escaping. The cold air spreads through the gap between the two barrier plates 3. During defrosting, the controller electromagnetic plate 352 is de-energized, and the two barrier plates 3 are moved away from each other, causing the two sealing airbags 35 to extend under the action of the tension spring 351. The extended airbags still block the cold air from spreading up from below the barrier plates 3 until the two barrier plates 3 are fully open. The controller then energizes the electromagnetic plate 352, causing the two airbags to retract into the storage tank 312. At this time, the telescopic rod 242 drives the scraper 23 to descend, thereby reducing the connection time between the space above and below the barrier plates 3, reducing the amount of cold air spreading upward from below, and reducing the temperature change inside the cold storage unit 1 below the barrier plates 3. This ensures the cold storage environment for fruits and vegetables. Furthermore, by setting the heating plate 311 inside the sealing airbags 35, the two sealing airbags 35 are prevented from freezing and sticking together, ensuring that the two airbags can be separated. This further improves the practical application effect of the invention.

[0056] The specific workflow is as follows:

[0057] During operation, the staff first turns on the condensation system to pre-cool the cold storage unit 1. After pre-cooling, the door 12 is opened, and goods are placed inside the cold storage unit 1. At this time, the staff sets the defrosting time through the controller, such as defrosting the copper pipes 11 inside the cold storage every five days. Because the fins 111 can accelerate the heat dissipation of the copper pipes 11, the frost formed by the condensation of moisture in the air is mainly concentrated on the surface of the fins 111. During defrosting, the controller controls the barrier module to open. At this time, the barrier module no longer obstructs the scraper 23, causing the controller to control the telescopic unit to push the scraper 23 down, so that the scraper 23 passes between the opened barrier modules, so that the scraper 23 is located between two adjacent copper pipes 11, and the scraper 23 is located at one end of the fins 111. At this time, as the scraper 23 moves downward, the scraper 23 pushes the frost condensed on the surface of the two copper pipes 11 downward. Since the height of the scraper 23 is greater than the height of the fins 111, when the lower end of the scraper 23 passes over the fins 111, the frost will fall down. When the scraper 23 is at its lower end, its upper end is still above the fins 111. At this time, the controller controls the servo motor 21 to run. Initially, the slider 22 is located on one side of the cold storage unit 1. Therefore, when the servo motor 21 drives the screw 2 to rotate, the screw 2 drives the slider 22 to move to the other side of the cold storage unit 1, causing the slider 22 to drive the scraper 23 to move to the other side of the cold storage unit 1. This causes the scraper 23 to move along the surface of the two copper busbars 11 to the other end of the two copper busbars 11, thus causing the scraper 23 to move along the surface of the two copper busbars 11 to the other end of the two copper busbars 11. 23 scrapes off the frost on both sides of the fins 111 of the two copper tubes 11 until the scraper 23 moves to the other end of the fins 111, at which point the frost on both sides of the fins 111 is completely scraped off. At this time, the controller controls the telescopic unit to retract, so that the telescopic unit drives the scraper 23 to rise above the barrier module. At this time, the controller controls the barrier module to close. Similarly, the next time defrosting occurs, the servo motor 21 rotates in the opposite direction, so that the servo motor 21 can drive the scraper 23 to scrape off the frost on the surface of the fins 111 in the opposite direction.

[0058] Initially, electromagnet 243 is energized, attracting telescopic rod 242 into mounting slot 241, causing the telescopic rod 242 to move scraper 23 above the barrier module. When the barrier module opens, the controller de-energizes electromagnet 243, causing telescopic rod 242 to extend out of mounting slot 241 under its own weight. This allows the telescopic rod 242 to move scraper 23 through the opened barrier module to above copper busbar 11, until the telescopic rod 242 reaches its maximum extension. At this point, the lower end of scraper 23 passes over the lower end face of fin 111, and scraper 23 is positioned above the barrier module. As the servo motor 21 rotates at one end of the fin 111, the servo motor 21 drives the slider 22 via the screw 2, which in turn moves the fixed rod 24 to the other end of the fin 111. This causes the fixed rod 24 to move the scraper 23 along both sides of the fin 111 towards the other end via the telescopic rod 242, thus scraping off the frost on the surface of the fin 111. When the scraper 23 is at the other end of the fin 111, the controller energizes the electromagnet 243. At this time, the electromagnet 243 attracts the telescopic rod 242 into the mounting groove 241 until the telescopic rod 242 contacts the bottom of the mounting groove 241. When the electromagnet 243 is de-energized, the telescopic rod 242, under its own weight, moves the pressure block 25 closer to the copper tube 11 until the pressure block 25 passes between the two copper tubes 11. At this time, the pressure block 25 moves the scraper 23 to contact the upper end of the fin 111. The lower end of the scraper 23 then impacts the upper end of the fin 111. The lower end of the scraper 23 is set to be inclined, so that after the scraper 23 impacts the upper end of the fin 111, the fin 111 blocks the lower end of the scraper 23. As the scraper 23 continues to move downward under the action of the pressure block 25, the fin 111... The upper end face of 11 blocks and pushes the inclined surface of scraper 23 to drive scraper 23 into groove 251. At this time, the upper end face of fin 111 slides in contact with the inclined surface of scraper 23. At this time, scraper 23 squeezes the connecting spring 252 and continuously enters groove 251 until the side of scraper 23 away from groove 251 contacts the side wall of fin 111. At this time, scraper 23 is tightly attached to the side wall of fin 111 under the pushing force of connecting spring 252. As telescopic rod 242 drives scraper 23 to move to the other end of fin 111, scraper 23 can scrape off the frost on the side wall of fin 111.When the pressure block 25 drives the scraper 23 to contact the upper end of the fin 111, the scraper 23 near the lower end wall of the groove 251 contacts the upper end of the fin 111. Since the scrapers 23 on the upper and lower end walls of the groove 251 are triangular, and the two inclined surfaces that are far away from each other are close to the side wall of the groove 251, the scraper 23 near the lower end wall of the groove 251 collides with the upper end of the fin 111 through the inclined surface, knocking off the frost that has condensed at the collision part of the upper end of the fin 111. This causes the upper end of the fin 111 to press the inclined surface of the scraper 23 and push the scraper 23 into the groove 251. At this time, the tip of the scraper 23 away from the groove 251 contacts the scraper 23. The scraper 23 located in the middle 3. The lower end has an arc surface. When the scraper 23 located in the center of the groove 251 contacts the fin 111, the fin 111 pushes the scraper 23 located in the center of the groove 251 to enter the groove 251 by pushing the arc surface of the scraper 23 located in the center of the groove 251 until the side of the scraper 23 located in the center of the groove 251 away from the groove 251 contacts the side wall of the fin 111. When the scraper 23 at the lower end passes the fin 111, the connecting spring 252 pushes the scraper 23 to extend out of the groove 251, so that the scraper 23 scrapes off the frost at the lower end of the fin 111 through its tip. At this time, the lower end face of the scraper 23 located at the upper end contacts the upper end of the fin 111. As the telescopic rod 242 passes through the pressure block 25 drives the scraper 23 to move towards the other end of the fin 111, so that the telescopic rod 242 can push the upper and lower triangular scrapers 23 to scrape off the frost condensed at the upper and lower ends of the fin 111, while the scraper 23 located in the center of the groove 251 scrapes off the frost condensed on the side wall of the fin 111; in the initial state, the electromagnet 243 attracts the telescopic rod 242 into the mounting groove 241, so that the telescopic rod 242 squeezes the push spring 244 into the mounting groove 241 under the action of the magnetic attraction force. When the electromagnet 243 is de-energized, the push spring 244 pushes the telescopic rod 242 out of the mounting groove 241 under the action of its own restoring force, so that the telescopic rod 242 pushes the pressure block 25 to move. The scraper 23 quickly approaches the copper tube 11, causing the pressure block 25 to be subjected to the combined action of its own weight and the pushing force of the push spring 244. This increases the impact force of the pressure block 25 and the scraper 23 on the upper end of the fin 111, increasing the breaking effect of the frost condensed on the surface of the fin 111, thereby accelerating the removal of frost from the surface of the fin 111. During long-term use, frost debris easily adheres to the surface of the telescopic rod 242. As the telescopic rod 242 enters the mounting groove 241, the frost debris is blocked by the fixing rod 24 and accumulates at the opening of the mounting groove 241. This causes the frost debris at the opening of the mounting groove 241 to bond the telescopic rod 242 and the fixing rod 24 together.Before pre-cooling, the operator controls the drive unit via the controller, causing the drive unit to move the two baffle plates 3 closer together. This, in turn, causes the two baffle plates 3 to move the push plates 31 closer together until they contact each other. At this point, the operator controls the refrigeration system via the controller to pre-cool the interior of the cold storage unit 1. Because the baffle plates 3 and the through-slot 13 are connected by a sliding seal, the cold air inside the cold storage unit 1 will not flow out of the through-slot 13, thus ensuring the refrigeration effect inside the cold storage unit 1. Furthermore, the two push plates 31... The push plate 31 is in close contact with the inner wall of the cold storage unit 1, and the connection is also a sliding seal. This reduces the upward spread of cold air between the two push plates 31, thereby reducing the amount of frost condensation on the surface of the telescopic rod 242. During the refrigeration of goods, frost will condense on the lower ends of the two push plates 31, causing them to stick together and affecting the opening of the two barrier plates 3. Therefore, this invention uses the heating element 311 to heat the push block before de-icing, so that the frost on the lower end of the push block melts and prevents frost from forming. The two push plates 31 are bonded together, making it easier for the drive unit to pull the two barrier plates 3 away from each other. The heating element 311 is located at the upper end of the push plate 31, so that the heating element 311 can heat the space above the barrier plate 3. When defrosting is required inside the cold storage unit 1, the controller controls the drive motor 34 to run, so that the drive motor 34 can drive the spur gear 32 to rotate. When the spur gear 32 meshes with the rack 33, since the rack 33 is fixed to both sides of the barrier plate 3, the teeth on the spur gear 32 mesh with the grooves on the rack 33. During the transmission meshing process, the teeth on the spur gear 32 can push the inner wall of the rack 33 on the rack 33 to drive the two baffle plates 3 away from each other. Since the baffle plate 3 is slidably sealed to the cold storage body 1, and the push plate 31 is slidably sealed to the cold storage body 1, a space is created between the baffle plate 3, the push plate 31 and the side wall of the cold storage body 1 to isolate the interior of the cold storage body 1, thereby preventing cold air from entering. Not only does the cold air dissipate to the outside, but it also prevents frost from condensing between the spur gear 32 and the rack 33, thus ensuring the transmission meshing between the spur gear 32 and the rack 33.Before pre-cooling, the controller controls the drive motor 34 to drive the two baffle plates 3 closer together, causing the baffle plates 3 to drive the push plate 31 closer together, and causing the two sealing airbags 35 to come into contact until they are in contact. This causes the two sealing airbags 35 to compress each other, allowing gas to escape through the exhaust port 353. At this time, the tension spring 351 inside the sealing airbag 35 contracts under the compression of the sealing airbag 35 until the two push plates 31 come into contact. Then, one of the electromagnetic plates 352 attracts the push plate 31 and causes the sealing airbag 35 to compress the tension spring 351 and move closer to the push plate 31. At this point, the other sealing airbag... The airbag 35 extends under the restoring force of the tension spring 351 and enters the storage groove 312 of the energized electromagnetic plate 352, allowing the sealing airbag 35 to block the gap between the two barrier plates 3, preventing cold air from spreading through the gap. During defrosting, the controller electromagnetic plate 352 is de-energized, and the two barrier plates 3 are moved away from each other, causing the two sealing airbags 35 to extend under the action of the tension spring 351. The extended airbags continue to block the cold air from spreading up from below the barrier plates 3 until the two barrier plates 3 are fully open. At this point, the controller energizes the electromagnetic plate 352, causing the two airbags to retract into the storage groove 312.

[0059] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature green preservation storage device, characterized in that: Including pipe-type cold storage; the pipe-type cold storage also includes: A cold storage unit (1) is provided, with copper pipes (11) fixedly installed inside; a door (12) is provided on one side of the cold storage unit (1); a condensation system is installed on the outside of the cold storage unit (1); the copper pipes (11) are connected to the condensation system; a screw (2) is provided above the copper pipes (11); the screw (2) is slidably sealed to the cold storage unit (1); a servo motor (21) is fixedly connected to the outer wall of the cold storage unit (1); the... The output end of the servo motor (21) is fixedly connected to the screw (2); a slider (22) is spirally connected to the screw (2); the slider (22) slides in contact with the upper wall of the cold storage body (1); a scraper (23) is provided below the slider (22); the scraper (23) is fixedly connected to the lower end of the slider (22) through a telescopic unit; the telescopic unit is used to drive the scraper (23) to rise and fall; fins (111) are fixedly connected to the surface of the copper pipe (11); A barrier module is located between the copper pipe (11) and the scraper (23); the barrier module serves to block the upward spread of cold air below; Controller, the controller is used to control the automatic operation of the entire pipe-type cold storage; The telescopic unit includes a fixed rod (24); the fixed rod (24) is fixedly connected to the lower end of the slider (22); an installation groove (241) is provided at the end of the fixed rod (24) away from the slider (22); a telescopic rod (242) is slidably connected in the installation groove (241); a scraper (23) is installed at the end of the telescopic rod (242) away from the installation groove (241); an electromagnet (243) is embedded in the bottom of the installation groove (241); The lower end of the telescopic rod (242) is fixedly connected to a pressure block (25); the surface of the pressure block (25) is provided with a groove (251); the scraper (23) is slidably connected in the groove (251); the scraper (23) and the bottom of the groove (251) are fixedly connected by a connecting spring (252); The blocking module includes: The barrier plate (3) has two sides; the cold storage body (1) has through grooves (13) on both sides; the barrier plate (3) is slidably and sealed in the through groove (13); the two sides of the barrier plate (3) are slidably and sealed to the inner wall of the cold storage body (1); a push plate (31) is fixedly installed at the end of each of the two barrier plates (3) that are close to each other; a heating element (311) is installed on the upper end of the push plate (31); A drive unit is installed in the through slot (13); the drive unit is used to drive the barrier plates (3) to move away from each other; The drive unit includes a spur gear (32); the spur gear (32) is rotatably connected in a through groove (13); racks (33) are fixedly connected to both sides of the baffle plate (3); the racks (33) mesh with the spur gear (32); a drive motor (34) is installed inside the cold storage body (1); the output shaft of the drive motor (34) is fixedly connected to the spur gear (32); Storage slots (312) are provided at the upper ends of the two push plates (31) that are close to each other; a sealing airbag (35) is fixedly installed in the storage slot (312); a heating element (311) is located inside the sealing airbag (35); the heating element (311) is fixedly connected to the push plate (31); a tension spring (351) is installed inside the sealing airbag (35); one end of the tension spring (351) is fixedly connected to the push plate (31), and the other end is fixedly connected to the sealing airbag (35); an electromagnetic plate (352) is fixedly connected to the inner wall of the sealing airbag (35) away from the push plate (31); an exhaust port (353) is provided at the upper end of the sealing airbag (35).

2. The low-temperature green preservation storage device according to claim 1, characterized in that: The groove (251) is provided with three scrapers (23); the scrapers (23) near the upper and lower end walls of the groove (251) are triangular.

3. The low-temperature green preservation storage device according to claim 2, characterized in that: A push spring (244) is fixedly connected to the bottom of the mounting groove (241).

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