An improved large cold storage with defrosting function

Abstract

The present invention relates to the field of cold storage, and in particular to an improved large-scale cold storage with a defrosting function, including a cold storage, wherein the cold storage includes an outer wall, an inner wall is arranged inside the outer wall, and an insulation layer is arranged between the outer wall and the inner wall. A plurality of evaporators are installed on the upper part of the cold storage, and a defroster is installed on the bottom of each evaporator. The evaporator is connected to a compressor, the compressor is connected to a condenser, and the condenser is connected to a liquid reservoir and a throttling device. The defroster includes a wall breaking component, a defrosting component and a defrosting component; the wall breaking component includes a receiving frame. The present invention breaks through the traditional defrosting mode, effectively avoids the problem of sudden temperature difference caused by direct contact between the evaporating tube and the external high-temperature gas, controls the temperature difference between the inside and outside of the evaporating tube within a safety threshold, significantly improves its structural strength and service life, and is particularly suitable for professional cold storage environments with extremely high requirements for temperature stability.

Description

Technical Field

[0001] The present invention relates to the field of cold storage, in particular to an improved large-scale cold storage with a defrosting function. Background Art

[0002] In the cold chain logistics and food storage industries, the efficient operation of large cold storage facilities is crucial to ensuring product quality. However, frost on the evaporator surface can significantly reduce heat exchange efficiency, increase energy consumption, and even cause equipment failure. Currently, traditional defrosting technologies mainly use electric heating or hot fluorine defrosting. Although defrosting can be achieved, they have disadvantages such as high energy consumption, easy damage to the evaporator tube due to temperature difference stress, and the need for downtime, which affects the continuous use of the cold storage. Although mechanical defrosting methods can be performed online, a single purge or scraping method is difficult to completely remove the stubborn frost layer and is prone to damage the surface of the evaporator tube. In addition, the existing defrosting system lacks an effective treatment mechanism for defrost water, and the accumulated water residue is prone to breed bacteria and corrode the equipment. With the increasing demand for intelligent and energy-saving cold storage, the development of a new defrosting technology that takes into account efficient defrosting, equipment protection, and energy saving and consumption reduction has become an urgent problem to be solved in the industry. Therefore, we propose an improved large cold storage with defrosting function to solve the above-mentioned problems. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an improved large-scale cold storage with a defrosting function.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an improved large-scale cold storage with a defrosting function, comprising a cold storage, wherein the cold storage comprises an outer wall, an inner wall is arranged inside the outer wall, an insulation layer is arranged between the outer wall and the inner wall, a plurality of evaporators are installed in the upper part of the cold storage, a defroster is installed at the bottom of each evaporator, the evaporator is connected to a compressor, the compressor is connected to a condenser, the condenser is connected to a liquid reservoir and a throttling device, and the defroster comprises a wall breaking component, a defrosting component and a defrosting component;

[0005] The wall breaking assembly includes a receiving frame, wherein the receiving frames are sleeved on the outer periphery of the evaporator tube inside the evaporator in the cold storage, the top of the receiving frame is installed on the top of the cold storage, the inside of the receiving frame is installed with a heating wire, the two sides of the receiving frame are fixedly connected to a fixed ring seat, the bottom of the outer periphery of the fixed ring seat is provided with a through opening, the inside of the through opening is installed with a valve body, the inner side of the fixed ring seat is rotatably connected to a rotating ring, one side of the rotating ring on both sides is installed with a hollow motor, the inner side of the rotating part of the hollow motor is fixedly connected to a cross pipe, the middle part of the upper and lower sides of the outer periphery of the cross pipe is fixedly connected to a fixing rod, the middle part of the outer periphery of the fixing rod is rotatably connected to a rotating sleeve, the outer periphery of the rotating sleeve is fixedly connected to evenly distributed impeller two and a crushing wheel, and the crushing wheel is arranged on one side of impeller two;

[0006] The defrost assembly includes a horizontal tube, the upper and lower parts of the horizontal tube are penetrated by evenly distributed through holes, the upper and lower parts of the outer circumference of the horizontal tube are fixedly connected with evenly distributed guide plates, the guide plates are arranged on one side of the through holes, and the impeller two are arranged on one side of the guide plate end, the horizontal tube is connected with the interior of the rotating ring, the interior of the rotating ring is connected with the interior of the fixed ring seat, the end of the rotating ring away from the rotating ring is installed and connected with a conduit, the end of the conduit away from the rotating ring passes through the inner wall, and the end of the conduit on one side is fixedly connected with a connecting pipe, the conduit is connected to the interior of the connecting pipe, the end of the connecting pipe is installed with a pump body, the input end of the pump body is connected with a ventilation sleeve, and the ventilation sleeve is sleeved on the outer circumference of the end of the evaporation tube of the evaporator. When the gas is ejected through the through hole, under the guidance of the guide plate, the airflow will encounter the impeller two, and the impeller two can drive the rotating sleeve to rotate, and the crushing wheel installed on the rotating sleeve can realize the crushing of frost on the outer periphery of the evaporation tube that is in contact with it.

[0007] Preferably, one end of the swivel away from the cross tube is fixedly connected to a gear ring, the lower portion of the outer circumference of the gear ring is meshed with a gear, and a wheel bin is provided on one side of the gear away from the swivel.

[0008] Preferably, the bottom of the wheel house is connected to the inside of the conduit.

[0009] Preferably, the defrost assembly includes a fixed shaft, which is fixedly connected to both sides of the inside of the transverse tube, and the middle part of the outer periphery of the fixed shaft is rotatably connected with a cam and impeller three, and the impeller three is arranged at the upper and lower parts of the cam, and both sides of the outer periphery of the cam are slidably connected with guide rods, and the end of the guide rod away from the cam is fixedly connected to a scraper.

[0010] Preferably, the middle portion of the gear is fixedly connected to a rotating shaft, the middle portion of the outer periphery of the rotating shaft is fixedly connected to an impeller 1, and the impeller 1 is arranged inside the wheel chamber.

[0011] Preferably, through pipes are installed and connected on both sides of the wheel house, and one end of the through pipe away from the wheel house is fixedly connected to a side pipe, and the end portions of the side pipes are connected to the inside of the swivel.

[0012] Preferably, the ends of the scraper racks all pass through the side walls of the transverse tube, and the ends of the guide rods all pass through the side walls of the transverse tube.

[0013] Preferably, the guide rod and the scraper are both slidably connected to the transverse tube, and the outer periphery of one end of the guide rod close to the convex disc is fixedly connected to a limiting ring.

[0014] Preferably, a return spring is provided on the side of the limiting ring away from the convex disc, and the return spring is sleeved on one side of the outer circumference of the guide rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention adopts an innovatively designed intelligent defrosting system, which accurately extracts the peripheral air of the end of the evaporator tube through the pump body, and pre-cools the evaporator tube through the insulation layer and the ventilation sleeve, thereby constructing a unique air pre-cooling circulation path. After being transported to the rotating ring, the fixed ring seat and the cross pipe through the connecting pipe and the duct, the cold air is blown directionally through the through hole at a controllable flow rate to the frost layer on the surface of the evaporator tube, thereby achieving efficient defrosting. This technology breaks through the traditional defrosting mode, effectively avoids the problem of sudden temperature difference caused by direct contact between the evaporator tube and the external high-temperature gas, controls the temperature difference between the inside and outside of the evaporator tube within the safety threshold, significantly improves its structural strength and service life, and can defrost without shutting down the evaporator. It is particularly suitable for professional cold storage environments with extremely high requirements for temperature stability.

[0017] 2. The present invention adopts the integrated design of self-circulating defrost and heat dissipation, and utilizes the original receiving frame to integrate electric defrost and diversion heat dissipation functions. When the frost naturally falls off to the receiving frame, the built-in heating wire starts quickly to melt the frost rapidly; the synchronously opened port valve body guides the melted water to be discharged through the thermal insulation layer to avoid residual water accumulation. The auxiliary airflow formed by the through holes on both sides of the horizontal pipe not only accelerates the melting and discharge of frost, but also can accurately carry away the excess heat generated by the heating wire, forming a closed-loop system of "defrost-heat dissipation-protection", which not only ensures the stable operation of the evaporator tube, but also reduces energy consumption and optimizes the overall operating efficiency of the equipment.

[0018] 3. The present invention has the dual functions of airflow guidance and protection: the innovatively designed guide plate has the dual functions of airflow guidance and through-hole protection. On the one hand, through the scientifically designed guide surface, the airflow is accurately guided to blow to the frost layer fracture after the crushing wheel is processed, thereby accelerating the peeling of frost blocks; on the other hand, the guide plate builds a physical protection barrier to effectively intercept falling frost and ice, prevent the through-hole from being blocked, ensure the stable output of the defrost airflow, and provide reliable protection for the continuous and efficient operation of the defrost system.

[0019] 4. The present invention realizes the efficient conversion of airflow energy and mechanical energy through the breakthrough gas-driven mechanical transmission design. After the gas enters the duct, the branch drives the impeller 1 in the wheel compartment, which drives the rotating ring and the cross tube to rotate around the evaporator tube through the rotating shaft, gears, and gear ring transmission chain, realizing 360° all-round defrosting; the airflow ejected from the through hole drives the impeller 2, which rotates the sleeve and the crushing wheel in conjunction to break the frost layer into small pieces that are easy to fall off; the hollow motor at the end of the cross tube and the impeller 3, the cam, the guide rod, and the scraper constitute a dynamic scraping mechanism. During the rotation of the cross tube, the scraper is periodically driven to extend and retract by the cam, forming a multi-dimensional coordinated defrosting mode of "rotational blowing-mechanical crushing-dynamic scraping", which greatly improves the defrosting efficiency and quality, and lays a solid foundation for the subsequent efficient heat absorption of the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a structural schematic diagram of an improved large-scale cold storage with a defrosting function according to the present invention;

[0021] Figure 2 This is a partial structural diagram of a defroster of an improved large-scale cold storage with a defrosting function according to the present invention;

[0022] Figure 3 This is a schematic diagram of the partial structure of the evaporation pipe of an improved large-scale cold storage with a defrosting function according to the present invention;

[0023] Figure 4 This is a partial structural diagram of a receiving frame of an improved large-scale cold storage with a defrosting function according to the present invention;

[0024] Figure 5 This is a schematic diagram of the partial structure of a conduit of an improved large-scale cold storage with a defrosting function according to the present invention;

[0025] Figure 6 This is a partial structural diagram of a fixed ring seat of an improved large-scale cold storage with a defrosting function according to the present invention;

[0026] Figure 7 This is a partial structural diagram of a horizontal pipe of an improved large-scale cold storage with a defrosting function according to the present invention;

[0027] Figure 8 The figure is a partial structural diagram of the convex plate of an improved large-scale cold storage with a defrosting function according to the present invention.

[0028] 1. Cold storage; 101. Exterior wall; 102. Interior wall; 103. Insulation layer; 2. Evaporator; 3. Defroster; 301. Frame; 302. Pump body; 303. Connecting pipe; 304. Conduit; 305. Swivel; 306. Fixed ring seat; 307. Horizontal pipe; 308. Gear ring; 309. Through pipe; 310. Wheel house; 311. Rotating shaft; 312. Side pipe; 313. 3. Gear; 314. Scraper; 315. Guide plate; 316. Guide rod; 317. Impeller 1; 318. Fixed rod; 319. Crushing wheel; 320. Rotating sleeve; 321. Impeller 2; 322. Through hole; 323. Return spring; 324. Limiting ring; 325. Boss; 326. Impeller 3; 327. Fixed shaft; 328. Through port; 4. Compressor; 5. Condenser. DETAILED DESCRIPTION

[0029] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0030] like Figures 1-8An improved large-scale cold storage with a defrosting function is shown, comprising a cold storage 1, the cold storage 1 comprising an outer wall 101, an inner wall 102 being arranged inside the outer wall 101, an insulation layer 103 being arranged between the outer wall 101 and the inner wall 102, a plurality of evaporators 2 being installed at the upper part of the cold storage 1, a defroster 3 being installed at the bottom of each evaporator 2, the evaporator 2 being connected to a compressor 4, the compressor 4 being connected to a condenser 5, the condenser 5 being connected to a liquid reservoir and a throttling device as well as refrigeration system-related equipment such as an expansion valve, a pressure controller, a dryer, and an oil separator to ensure that the refrigeration system can operate smoothly, the above-mentioned equipment being installed inside the equipment compartment of the cold storage 1, the defroster 3 comprising a wall breaking component, a defrosting component, and a defrosting component;

[0031] Furthermore, in specific implementation, when the cold storage is in operation, frost on the surface of the evaporator 2 will reduce the heat exchange efficiency due to low temperature. At this time, the control system triggers the defroster 3 to start, and the pump body 302 draws air from the insulation layer 103 through the ventilation sleeve, and transports it to the rotating ring 305 and the fixed ring seat 306 through the connecting pipe 303 and the conduit 304, and then enters the cross pipe 307, and finally sprays to the surface of the evaporation tube of the evaporator 2 through the through hole 322 to achieve defrosting. At the same time, the high-temperature airflow drives the movement of each component to complete auxiliary defrosting actions such as wall breaking and frost scraping.

[0032] The defrost assembly includes a transverse tube 307, and the upper and lower parts of the transverse tube 307 are penetrated by evenly distributed through holes 322. The upper and lower parts of the outer periphery of the transverse tube 307 are fixedly connected with evenly distributed guide plates 315, and the guide plates 315 are arranged on one side of the through holes 322. The impeller 2 321 is arranged on one side of the end of the guide plate 315. The transverse tube 307 is connected with the interior of the rotating ring 305, and the interior of the rotating ring 305 is connected with the interior of the fixed ring seat 306. The end of the rotating ring 305 away from the transverse tube 307 is fixedly connected with a gear ring 308, and the lower part of the outer periphery of the gear ring 308 is meshed with a gear 313. The gear 313 is provided with a wheel bin 310 on the side away from the rotating ring 305. The middle part of the gear 313 is fixedly connected to the rotating shaft 311, and the middle part of the outer periphery of the rotating shaft 311 is fixedly connected to the impeller 1 3 17. The impellers 317 are all arranged inside the wheel compartment 310. Through pipes 309 are installed on both sides of the wheel compartment 310 and are in communication with each other. The ends of the through pipes 309 away from the wheel compartment 310 are fixedly connected to side pipes 312. The ends of the side pipes 312 are in communication with the interior of the swivel 305. The ends of the swivel 305 away from each other are installed and in communication with a conduit 304. The bottom of the wheel compartment 310 is in communication with the interior of the conduit 304. The ends of the conduits 304 away from the swivel 305 pass through the inner wall 102. The ends of the conduits 304 on one side are fixedly connected to connecting pipes 303. The conduits 304 are in communication with the interior of the connecting pipes 303. The ends of the connecting pipes 303 are installed with pump bodies 302. The input ends of the pump bodies 302 are in communication with ventilation sleeves. The ventilation sleeves are sleeved around the outer periphery of the ends of the evaporating tubes of the evaporator 2.

[0033] The air in the air jacket 303 is then blown away by the heat of the refrigerator 200. The coolant 305 is then blown away by the heat of the refrigerator 200. The coolant 305 is then blown away by the heat of the refrigerator 200. The fallen frost is received, and then the heating wire inside the receiving frame 301 will start working, so that the internal frost can be melted quickly. At the same time, the valve body in the through port 328 is opened, and the melted ice water will flow out through the through ports 328 on both sides into the insulation layer 103 and be further discharged. By providing through holes 322 on both sides of the horizontal tube 307, part of the gas can be blown to the fallen frost, thereby effectively accelerating the melting and outflow of the frost, and at the same time, the heat generated by the heating wire inside the receiving frame 301 can be dissipated to prevent it from affecting the evaporation tube. The airflow can be guided by the setting of the guide plate 315, so that the airflow can be blown to the fracture after the crushing wheel 319 is broken, thereby accelerating the peeling of frost blocks on the evaporation tube, which is beneficial to defrosting. At the same time, the guide plate 315 can protect the through hole 322 to prevent frost from falling on the through hole 322 and blocking the through hole 322, which is not conducive to defrosting.

[0034] The defrost assembly includes a fixed shaft 327, which is fixedly connected to both sides of the cross tube 307, and the middle part of the outer circumference of the fixed shaft 327 is rotatably connected to a flange 325 and an impeller 326. The impeller 326 is arranged at the upper and lower parts of the flange 325, and the outer circumference of the flange 325 is slidably connected to a guide rod 316. The end of the guide rod 316 away from the flange 325 is fixedly connected to a scraper 314, and the end of the scraper 314 passes through the side wall of the cross tube 307. The end of the guide rod 316 passes through the side wall of the cross tube 307. The guide rod 316 and the scraper 314 are slidably connected to the cross tube 307. The outer circumference of the end of the guide rod 316 close to the flange 325 is fixedly connected to a limit ring 324. The side of the limit ring 324 away from the flange 325 is provided with a return spring 323, and the return spring 323 is sleeved on one side of the outer circumference of the guide rod 316.

[0035] Furthermore, in a specific implementation, during the defrosting process, the hollow motor at the end of the transverse tube 307 can drive the transverse tube 307 to rotate slowly. During this process, when the gas passes through the transverse tube 307, the gas will encounter the impeller three 326, thereby driving the impeller three 326 and the convex disc 325 to rotate. During the contact process of the convex disc 325, the convex disc 325 can drive the contacting guide rod 316 to move, thereby driving the scraper 314 to extend outward. During this process, the reset spring 323 can be used to reset the scraper 314, so that the scraper 314 can continuously contract and expand, thereby effectively improving the efficiency of breaking and stripping the frost on the evaporator tube, which is beneficial for practical use.

[0036] Among them, the wall breaking component includes a support frame 301, the support frame 301 is sleeved on the outer periphery of the evaporator 2 in the cold storage 1, the top of the support frame 301 is installed on the top of the cold storage 1, the inside of the support frame 301 is installed with a heating wire, the inside of the support frame 301 is fixedly connected with a fixed ring seat 306, the bottom of the outer periphery of the fixed ring seat 306 is provided with a through hole 328, the inside of the through hole 328 is installed with a valve body, and the inside of the fixed ring seat 306 is rotatably connected A rotating ring 305 is connected, and a hollow motor is installed on one side of the rotating ring 305 on both sides. The inner side of the rotating part of the hollow motor is fixedly connected to a horizontal tube 307. The middle part of the upper and lower sides of the outer periphery of the horizontal tube 307 is fixedly connected to a fixed rod 318. The middle part of the outer periphery of the fixed rod 318 is rotatably connected to a rotating sleeve 320. The outer periphery of the rotating sleeve 320 is fixedly connected to evenly distributed impellers 321 and crushing wheels 319. The crushing wheels 319 are all arranged on one side of the impeller 321.

[0037] Furthermore, in a specific implementation, after the gas enters the conduit 304, part of the gas will enter the wheel chamber 310, thereby driving the impeller 317 inside the wheel chamber 310 to rotate, and the impeller 317 can drive the rotating shaft 311 and the gear 313 fixed thereto to rotate, and the gear 313 can drive the rotating ring 305 to rotate through the gear ring 308 engaged therewith, and the rotating ring 305 can drive the cross tube 307 to rotate around the evaporation tube of the evaporator 2, thereby The periphery of the evaporator tube is defrosted together, which is beneficial to the subsequent cooling and heat absorption work of the evaporator tube. When the gas is ejected through the through hole 322, under the guidance of the guide plate 315, the airflow will encounter the impeller 2 321, and the impeller 2 321 can drive the rotating sleeve 320 to rotate. The crushing wheel 319 installed on the rotating sleeve 320 can break the frost on the periphery of the evaporator tube that it contacts, so that the complete frost shell can be broken, effectively accelerating the frost shedding, facilitating the subsequent defrosting work, and further in actual use.

[0038] Working principle:

[0039] During actual use, the defroster 3 can be started, and the air around the end of the evaporation tube on the evaporator 2 can be extracted through the pump body 302. The air inside the insulation layer 103 will enter the ventilation sleeve and contact the evaporation tube. The air inside the ventilation sleeve can be preliminarily cooled through the evaporation tube. The gas will then enter the inside of the conduit 304 through the connecting pipe 303, and be transported to the rotating ring 305 and the fixed ring seat 306 through the connecting pipe 303 and the conduit 304, and then enter the inside of the cross pipe 307. Finally, the gas will be sprayed to the surface of the evaporation tube of the evaporator 2 through the through hole 322, so that the frosted part on the surface of the evaporation tube can be blown away, so that while achieving defrosting, the evaporation tube can be prevented from directly contacting the high-temperature gas outside, resulting in an excessive temperature difference between the inside and outside of the evaporation tube. The frost that falls can be caught by the receiving frame 301, and then the electric heating wire inside the receiving frame 301 starts to work, so that the frost inside can be melted quickly. At the same time, the valve body in the through port 328 opens, and the melted ice water flows out through the through ports 328 on both sides into the interior of the thermal insulation layer 103 and is further discharged. By providing through holes 322 on both sides of the transverse tube 307, part of the gas can be blown to the fallen frost, so that the melting and outflow of the frost can be effectively accelerated, and at the same time, the heat generated by the electric heating wire inside the receiving frame 301 can be dissipated to avoid its influence on the evaporation tube, which is beneficial to actual use. The setting of the guide plate 315 can guide the airflow, so that the airflow can be blown to the fracture of the crushing wheel 319, thereby accelerating the peeling of frost blocks on the evaporation tube, which is beneficial to defrosting. At the same time, the guide plate 315 can protect the through hole 322 to prevent frost and ice from falling and blocking the through hole 322, which is not conducive to defrosting. At the same time, in actual use, after the gas enters the inside of the conduit 304, part of the gas will enter the inside of the wheel bin 310, thereby driving the impeller 317 inside the wheel bin 310 to rotate, and the impeller 317 can drive the rotating shaft 311 and the gear 313 fixed thereto to rotate, and the gear 313 can drive the rotating ring 305 to rotate through the gear ring 308 engaged therewith. The rotating ring 305 can drive the horizontal tube 307 to rotate around the evaporation tube of the evaporator 2, so that the periphery of the evaporation tube can be defrosted together, which is beneficial to the subsequent cooling and heat absorption work of the evaporation tube. When the gas is ejected through the through hole 322, under the guidance of the guide plate 315, the airflow will encounter the second impeller 321, and the second impeller 321 can drive the rotating sleeve 320 to rotate. The crushing wheel 319 installed on the rotating sleeve 320 can break the frost on the periphery of the evaporation tube that is in contact with it, so that the complete frost shell can be broken, effectively accelerating the frost shedding, and facilitating the subsequent defrosting work. Furthermore, in actual use, during the defrosting process, the hollow motor at the end of the horizontal tube 307 can drive the horizontal tube 307 to rotate slowly.During this process, as the gas passes through the horizontal pipe 307, it encounters the third impeller 326, which drives the third impeller 326 and the flange 325 to rotate. During the contact between the flange 325 and the guide rod 316, the flange 325 drives the contacting guide rod 316 to move, thereby driving the scraper 314 to extend outward. During this process, the return spring 323 can reset the scraper 314, allowing the scraper 314 to continuously contract and expand, thereby effectively improving the efficiency of breaking and removing frost from the evaporator tube, which is beneficial for practical use.

[0040] The above shows and describes 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 above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved large cold storage with a defrosting function, comprising a cold storage (1), characterized in that: The cold storage (1) comprises an outer wall (101), an inner wall (102) is provided inside the outer wall (101), a thermal insulation layer (103) is provided between the outer wall (101) and the inner wall (102), a plurality of evaporators (2) are installed at the upper part of the cold storage (1), a defroster (3) is installed at the bottom of each of the evaporators (2), the evaporators (2) are connected to a compressor (4), the compressor (4) is connected to a condenser (5), the condenser (5) is connected to a liquid reservoir and a throttling device, and the defroster (3) comprises a wall breaking component, a defrosting component and a defrosting component; The wall breaking assembly comprises a receiving frame (301), the receiving frame (301) is sleeved on the outer periphery of the evaporation tube of the evaporator (2) inside the cold storage (1), the top of the receiving frame (301) is installed on the top of the cold storage (1), the receiving frame (301) is installed with a heating wire, the receiving frame (301) is fixedly connected to a fixed ring seat (306) on both sides, the outer periphery bottom of the fixed ring seat (306) is provided with a through hole (328), the through hole (328) is installed with a valve body, and the inside of the fixed ring seat (306) is rotated. A rotating ring (305) is connected, and a hollow motor is installed on one side of the rotating ring (305) on both sides. The inner side of the rotating part of the hollow motor is fixedly connected to a transverse tube (307). The middle parts of the upper and lower sides of the outer periphery of the transverse tube (307) are fixedly connected to a fixed rod (318). The middle part of the outer periphery of the fixed rod (318) is rotatably connected to a rotating sleeve (320). The outer periphery of the rotating sleeve (320) is fixedly connected to evenly distributed impellers (321) and crushing wheels (319). The crushing wheels (319) are arranged on one side of the impeller (321). The defrosting assembly includes a transverse tube (307), the upper and lower parts of the transverse tube (307) are penetrated by uniformly distributed through holes (322), the upper and lower parts of the outer periphery of the transverse tube (307) are fixedly connected with uniformly distributed guide plates (315), the guide plates (315) are arranged on one side of the through holes (322), the impellers (321) are arranged on one side of the end of the guide plates (315), the transverse tube (307) is connected to the inside of the rotating ring (305), the inside of the rotating ring (305) is connected to the inside of the fixed ring seat (306), the end of the rotating ring (305) away from the rotating ring (305) is installed and connected with a conduit (304), and the end of the conduit (304) away from the rotating ring (305) is penetrated by the inner wall (102 ), the ends of the conduits (304) on one side are fixedly connected to the connecting pipes (303), the conduits (304) are communicated with the inside of the connecting pipes (303), the ends of the connecting pipes (303) are installed with pump bodies (302), the input ends of the pump bodies (302) are communicated with ventilation sleeves, the ventilation sleeves are sleeved on the outer periphery of the ends of the evaporating tubes of the evaporator (2), when the gas is ejected through the through hole (322), under the guidance of the guide plate (315), the airflow will encounter the second impeller (321), and the second impeller (321) can drive the rotating sleeve (320) to rotate, and the crushing wheel (319) installed on the rotating sleeve (320) can realize the crushing of frost on the outer periphery of the evaporating tube that is in contact.

2. The improved large-scale cold storage with defrosting function according to claim 1, characterized in that: One end of the rotating ring (305) away from the transverse tube (307) is fixedly connected to a gear ring (308), the lower portion of the outer periphery of the gear ring (308) is meshedly connected to a gear (313), and a wheel house (310) is provided on one side of the gear (313) away from the rotating ring (305).

3. The improved large-scale cold storage with defrosting function according to claim 2, characterized in that: The bottom of the wheel chamber (310) is communicated with the interior of the conduit (304).

4. The improved large-scale cold storage with defrosting function according to claim 1, characterized in that: The defrost assembly includes a fixed shaft (327), the fixed shaft (327) is fixedly connected to both sides of the interior of the transverse tube (307), the middle part of the outer periphery of the fixed shaft (327) is rotatably connected to a convex disc (325) and an impeller three (326), the impeller three (326) is arranged at the upper and lower parts of the convex disc (325), the outer periphery of the convex disc (325) is slidably connected to a guide rod (316), and the end of the guide rod (316) away from the convex disc (325) is fixedly connected to a scraper (314).

5. The improved large-scale cold storage with defrosting function according to claim 2, characterized in that: The middle of the gear (313) is fixedly connected to the rotating shaft (311), and the middle of the outer periphery of the rotating shaft (311) is fixedly connected to the impeller 1 (317), and the impeller 1 (317) is arranged inside the wheel chamber (310).

6. The improved large-scale cold storage with defrosting function according to claim 5, characterized in that: Through pipes (309) are installed and connected to both sides of the wheel house (310), and one end of the through pipe (309) away from the wheel house (310) is fixedly connected to a side pipe (312), and the ends of the side pipe (312) are connected to the inside of the rotating ring (305).

7. The improved large-scale cold storage with defrosting function according to claim 4, characterized in that: The ends of the scraper (314) both penetrate the side wall of the transverse tube (307), and the ends of the guide rods (316) both penetrate the side wall of the transverse tube (307).

8. The improved large-scale cold storage with defrosting function according to claim 7, characterized in that: The guide rod (316) and the scraper (314) are both slidably connected to the transverse tube (307), and the outer periphery of one end of the guide rod (316) close to the convex disc (325) is fixedly connected to a limiting ring (324).

9. The improved large-scale cold storage with defrosting function according to claim 8, characterized in that: A return spring (323) is provided on one side of the limiting ring (324) away from the convex disc (325), and the return spring (323) is sleeved on one side of the outer periphery of the guide rod (316).

Images