Powerless Portable Fresh-keeping and Refrigerating Device

Abstract

The present invention relates to the field of fresh-keeping refrigeration, specifically a non-powered portable fresh-keeping refrigeration device, which includes a partitioned housing assembly, a recompression closing assembly, and a separable refrigeration assembly. The recompression closing assembly is arranged above the partitioned housing assembly, and the separable refrigeration assembly is arranged inside the partitioned housing assembly; the partitioned housing assembly includes a metal outer shell, a ceramic inner shell, a heat-insulating lining, a metal partition cylinder, and a partition plate. By arranging multiple groups of inorganic phase change blocks in the heat-conducting metal pore cages inside the separable refrigeration assembly, the inorganic phase change blocks can be placed in the refrigeration device for energy charging, which can effectively make the volume of the refrigeration container smaller and does not require power supply. Moreover, the multiple groups of inorganic phase change blocks are respectively arranged in four heat-conducting metal pore cages, and the four heat-conducting metal pore cages can be fully opened through a hinged base, which can effectively make it more convenient and fast to place the inorganic phase change blocks inside the refrigeration device for energy charging.

Description

Technical Field

[0001] The present invention relates to the field of fresh-keeping refrigeration, and specifically to a non-powered portable fresh-keeping refrigeration device. Background Art

[0002] A fresh-keeping refrigeration device is a container for keeping warm and cold the items that need to be fresh-kept and refrigerated. However, most of the existing heat-insulating refrigeration devices on the market are based on semiconductor and compressor refrigeration for refrigeration preservation, resulting in the existing refrigeration containers being too large in volume and requiring power supply, and unable to meet the scenarios of non-powered use such as portability. Moreover, when the cover plate of the existing heat-insulating refrigeration device is closed with the box body, most of them are directly hinged and closed directly. When the cover plate is not completely closed with the opening of the box body or the cover plate is opened due to bumps during transportation, the cold air or warm air inside the box body will leak out along the gap between the cover plate and the box body, thereby reducing the heat-insulating effect of the fresh-keeping refrigeration device. Summary of the Invention

[0003] In view of the problems in the prior art, the present invention provides a non-powered portable fresh-keeping refrigeration device.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a non-powered portable fresh-keeping refrigeration device, including a partitioned housing assembly, a double-pressure closing assembly, and a separable refrigeration assembly. The double-pressure closing assembly is arranged above the partitioned housing assembly, and the separable refrigeration assembly is arranged inside the partitioned housing assembly;

[0005] The partitioned housing assembly includes a metal outer shell, a ceramic inner shell, a heat-insulating lining, a metal partition cylinder, and a partition plate. The ceramic inner shell is arranged inside the metal outer shell, and a heat-insulating lining is arranged between the metal outer shell and the ceramic inner shell. A metal partition cylinder is fixedly bonded at the central position inside the ceramic inner shell. Partition plates are fixedly connected to the outer cylinder walls around the metal partition cylinder. The metal partition cylinder and the partition plates can effectively divide the ceramic inner shell into a refrigeration cavity at the central position and four storage cavities of the same size;

[0006] The double-pressure closing assembly includes four metal outer cover plates, which are respectively arranged directly above the four storage cavities. A ceramic heat-insulating cover plate is arranged below the metal outer cover plates. First grooves adapted to the metal partition cylinder are respectively formed at one ends of the metal outer cover plates and the ceramic heat-insulating cover plates close to the metal partition cylinder. A first rotating shaft is rotatably inserted at one end of the metal outer cover plate, and the end of the first rotating shaft extending out of the metal outer cover plate is rotatably inserted into the inner wall of the metal outer shell;

[0007] A plurality of fixing rods are slidably inserted into the bottom of each of the ceramic heat-insulating cover plates. One end of the fixing rod passing through the ceramic heat-insulating cover plate is fixedly connected to the metal outer cover plate. A limiting block is fixedly connected to the bottom of the fixing rod, and a second groove adapted to the limiting block is formed in the bottom of the ceramic heat-insulating cover plate. A spring is sleeved on the rod wall of one end of the fixing rod located inside the second groove;

[0008] A coronal rotating cylinder is rotatably connected to the top of each of the ceramic heat-insulating cover plates. A plurality of first meshing teeth are equidistantly arranged at one end of the coronal rotating cylinder away from the ceramic heat-insulating cover plate. A coronal pressing cylinder is arranged above the coronal rotating cylinder. A plurality of second meshing teeth adapted to the first meshing teeth are formed in the bottom of the coronal pressing cylinder. The first meshing teeth are meshed with the second meshing teeth. A meshing fixing cylinder is arranged above the coronal pressing cylinder. A third groove adapted to the meshing fixing cylinder is formed through the top of the metal outer cover plate. A fixing sleeve is arranged above the third groove. The fixing sleeve is fixedly bonded to the top of the metal outer cover plate. The meshing fixing cylinder is fixedly connected to the inner cylinder wall of the fixing sleeve;

[0009] A plurality of wedge-shaped teeth are equidistantly and fixedly connected to the outer wall of one end of the coronal rotating cylinder extending out of the ceramic heat-insulating cover plate;

[0010] A plurality of guiding teeth are equidistantly and fixedly connected to the outer wall of the coronal pressing cylinder;

[0011] A plurality of reset grooves are equidistantly formed through the outer cylinder wall of the bottom of the meshing fixing cylinder. The reset grooves are arranged in a matching manner with the wedge-shaped teeth. A plurality of meshing grooves are equidistantly formed in the bottom of the meshing fixing cylinder. A guiding groove is formed in the inner wall of one end of the meshing groove away from the reset groove. The guiding groove is arranged in a matching manner with the guiding teeth;

[0012] The split refrigeration assembly includes two articulated bases. The two articulated bases are articulated with each other. Two symmetrically arranged heat-conducting metal pore cages are arranged above each of the articulated bases. An inorganic phase change block is fixedly connected inside each of the four heat-conducting metal pore cages. Fixing plates are fixedly connected to both ends of the top of the articulated base. A second rotating shaft is fixedly connected to the outer wall of the heat-conducting metal pore cage at a position corresponding to the adjacent fixing plate. One end of the second rotating shaft away from the heat-conducting metal pore cage is rotatably inserted into the plate wall of the fixing plate. A bundling cover cylinder is arranged above the heat-conducting metal pore cage. The bundling cover cylinder is sleeved on the outer wall of the heat-conducting metal pore cage, and the bundling cover cylinder is inserted into the inner top of the metal partition cylinder.

[0013] Specifically, the heat-insulating inner lining is made of rigid polyurethane foam, and the ceramic inner shell is made of ceramic material.

[0014] Specifically, a pressing column is fixedly connected to the inner top of the coronal pressing cylinder, and the other end of the pressing column sequentially passes through the meshing fixing cylinder and the fixing sleeve.

[0015] Specifically, a plurality of through holes are equidistantly penetrated through the outer wall of the heat-conducting metal hole cage.

[0016] Specifically, the top of the bundling cover cylinder extends out of the metal separating cylinder and is fixedly connected with an end cover, and the diameter of the end cover is larger than the inner diameter of the metal separating cylinder.

[0017] Specifically, convex blocks are fixedly connected to the inner walls on both sides of the bundling cover cylinder, and the convex blocks are arranged to match the through holes.

[0018] Advantages of the present invention:

[0019] The structure of the non-powered portable fresh-keeping and refrigerating device of the present invention is simple and easy to use;

[0020] By adopting a separable refrigeration component, the refrigeration component is directly inserted into the metal separating cylinder inside the partitioned housing component, which can maximize the refrigeration effect;

[0021] Through the ceramic inner shell inside the partitioned housing component, four storage cavities and a refrigeration cavity are separated from the center position and separated by a partition board made of heat-insulating material, so that different substances can be classified and insulated;

[0022] By arranging multiple groups of inorganic phase change blocks in the heat-conducting metal hole cage inside the separable refrigeration component, the inorganic phase change blocks can be charged by simply placing them in the refrigeration device. This can effectively make the volume of the refrigeration container smaller and does not require power supply. Moreover, the multiple groups of inorganic phase change blocks are respectively arranged in four heat-conducting metal hole cages, and the four heat-conducting metal hole cages can be completely opened through the articulated base, which can effectively make it more convenient and fast to place the inorganic phase change blocks inside the refrigeration device for charging;

[0023] When the partitioned housing component is closed by the set double-pressure closing component, pressing the pressing column downward can make the ceramic heat-insulating cover plate located inside the storage cavity and limit the metal outer cover plate through the fixing rod, which can effectively avoid the problem that the metal outer cover plate automatically flips upward along the first rotating shaft during transportation, resulting in heat or cold air loss inside the box body, and making the fresh-keeping and refrigerating effect of the device better. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 1 It is a schematic structural diagram of the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0026] Figure 2 Cross-sectional view of the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0027] Figure 3 Exploded view of the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0028] Figure 4 Schematic structural diagram of the metal outer shell in the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0029] Figure 5 Schematic structural diagram of the ceramic inner shell in the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0030] Figure 6 Schematic structural diagram of the heat-insulating inner lining in the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0031] Figure 7 Schematic structural diagram of the metal partition cylinder in the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0032] Figure 8 For the non-powered portable fresh-keeping and refrigerating device provided by the present invention Figure 2 Partial enlarged view of part A;

[0033] Figure 9 Schematic diagram of the double-pressure closing assembly in the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0034] Figure 10 Partial exploded view of the double-pressure closing assembly in the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0035] Figure 11 Schematic structural diagram of the coronal rotating cylinder, coronal pressing cylinder and meshing fixing cylinder in the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0036] Figure 12 Schematic structural diagram when the heat-conducting metal hole cage in the non-powered portable fresh-keeping and refrigerating device is closed;

[0037] Figure 13 Schematic structural diagram of the articulated base in the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0038] Figure 14 Schematic structural diagram of the bundling cover cylinder in the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0039] Figure 15 Schematic structural diagram during the opening process of the heat-conducting metal hole cage in the non-powered portable fresh-keeping and refrigerating device provided by the present invention;

[0040] Figure 16 This is a schematic diagram of the structure of the heat-conducting metal hole cage after it is completely opened in the power-free portable fresh-keeping and refrigerating device provided by the present invention.

[0041] In the figure: 1. Compartmentalized housing assembly; 11. Metal outer shell; 12. Ceramic inner shell; 13. Thermal insulation lining; 14. Metal partition cylinder; 15. Partition board; 2. Re-pressing type closing assembly; 21. Metal outer cover plate; 22. First rotating shaft; 23. Ceramic heat-insulating cover plate; 24. First groove; 25. Fixed rod; 26. Limit block; 27. Second groove; 28. Spring; 29. Coronary rotating cylinder; 210. First meshing tooth; 211. Coronary pressing cylinder; 212. Second meshing tooth; 213. Pressing column; 214. Meshing fixing cylinder; 215. Wedge tooth; 216. Guide tooth; 217. Reset groove; 218. Meshing groove; 219. Guide groove; 220. Third groove; 221. Fixed sleeve; 3. Separate refrigeration assembly; 31. Hinged base; 32. Heat-conducting metal hole cage; 33. Through hole; 34. Fixed plate; 35. Second rotating shaft; 36. Gathering cover cylinder; 37. Protrusion; 38. End cover; 39. Inorganic phase change block. Detailed implementation manners

[0042] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0043] As Figures 1 - 16 shown, the power-free portable fresh-keeping and refrigerating device of the present invention includes a compartmentalized housing assembly 1, a re-pressing type closing assembly 2 and a separate refrigeration assembly 3. The re-pressing type closing assembly 2 is arranged above the compartmentalized housing assembly 1, and the separate refrigeration assembly 3 is arranged inside the compartmentalized housing assembly 1;

[0044] The compartmentalized housing assembly 1 includes a metal outer shell 11, a ceramic inner shell 12, a thermal insulation lining 13, a metal partition cylinder 14 and a partition board 15. A ceramic inner shell 12 is arranged inside the metal outer shell 11, and a thermal insulation lining 13 is arranged between the metal outer shell 11 and the ceramic inner shell 12. A metal partition cylinder 14 is fixedly bonded at the central position inside the ceramic inner shell 12. Partition boards 15 are fixedly connected to the outer cylinder walls around the metal partition cylinder 14. The metal partition cylinder 14 and the partition boards 15 can effectively divide the ceramic inner shell 12 into a refrigeration cavity at the central position and four storage cavities of the same size;

[0045] The compound pressure closing assembly 2 includes a metal outer cover plate 21. There are four metal outer cover plates 21, and the four metal outer cover plates 21 are respectively arranged directly above the four storage cavities. A ceramic heat insulation cover plate 23 is arranged below the metal outer cover plate 21. At one end of the metal outer cover plate 21 and the ceramic heat insulation cover plate 23 close to the metal separator cylinder 14, first grooves 24 adapted to the metal separator cylinder 14 are respectively provided. One end of the metal outer cover plate 21 is rotatably inserted with a first rotating shaft 22, and the end of the first rotating shaft 22 extending out of the metal outer cover plate 21 is rotatably inserted into the inner wall of the metal housing 11;

[0046] A plurality of fixing rods 25 are slidably inserted into the bottom of each ceramic heat insulation cover plate 23. One end of the fixing rod 25 passing through the ceramic heat insulation cover plate 23 is fixedly connected to the metal outer cover plate 21. A limiting block 26 is fixedly connected to the bottom of the fixing rod 25. A second groove 27 adapted to the limiting block 26 is provided at the bottom of the ceramic heat insulation cover plate 23. A spring 28 is sleeved on the rod wall of one end of the fixing rod 25 located inside the second groove 27;

[0047] A coronal rotating cylinder 29 is rotatably connected to the top of each ceramic heat insulation cover plate 23. A plurality of first meshing teeth 210 are equidistantly provided at one end of the coronal rotating cylinder 29 away from the ceramic heat insulation cover plate 23. A coronal pressing cylinder 211 is arranged above the coronal rotating cylinder 29. A plurality of second meshing teeth 212 adapted to the first meshing teeth 210 are provided at the bottom of the coronal pressing cylinder 211. The first meshing teeth 210 are meshed with the second meshing teeth 212. A meshing fixing cylinder 214 is arranged above the coronal pressing cylinder 211. A third groove 220 adapted to the meshing fixing cylinder 214 is penetrated through the top of the metal outer cover plate 21. A fixing sleeve 221 is arranged above the third groove 220. The fixing sleeve 221 is fixedly adhered to the top of the metal outer cover plate 21. The meshing fixing cylinder 214 is fixedly connected to the inner cylinder wall of the fixing sleeve 221;

[0048] A plurality of wedge-shaped teeth 215 are equidistantly and fixedly connected to the outer wall of one end of the coronal rotating cylinder 29 extending out of the ceramic heat insulation cover plate 23;

[0049] A plurality of guiding teeth 216 are equidistantly and fixedly connected to the outer wall of the coronal pressing cylinder 211;

[0050] A plurality of reset grooves 217 are equidistantly penetrated through the outer cylinder wall at the bottom of the meshing fixing cylinder 214. The reset grooves 217 are arranged in a matching manner with the wedge-shaped teeth 215. A plurality of meshing grooves 218 are equidistantly provided at the bottom of the meshing fixing cylinder 214. A guiding groove 219 is provided on the inner wall of one end of the meshing groove 218 away from the reset groove 217. The guiding groove 219 is arranged in a matching manner with the guiding teeth 216;

[0051] The split refrigeration assembly 3 includes two articulated bases 31 which are articulated with each other. Above each of the articulated bases 31, there are provided two symmetrically arranged heat-conducting metal pore cages 32. Inside each of the four heat-conducting metal pore cages 32, there is fixedly connected an inorganic phase change block 39. At both ends of the top of the articulated base 31, there are fixedly connected fixing plates 34. At the positions corresponding to the adjacent fixing plates 34 on the outer wall of the heat-conducting metal pore cage 32, there is fixedly connected a second rotating shaft 35. The end of the second rotating shaft 35 away from the heat-conducting metal pore cage 32 is rotatably inserted into the wall of the fixing plate 34. Above the heat-conducting metal pore cage 32, there is provided a bundling cover cylinder 36 which is sleeved on the outer wall of the heat-conducting metal pore cage 32, and the bundling cover cylinder 36 is inserted into the inner top of the metal partition cylinder 14.

[0052] The heat-insulating inner lining 13 is made of rigid polyurethane foam, and the ceramic inner shell 12 is made of ceramic material. Rigid polyurethane foam has excellent properties such as light weight, low thermal conductivity, good heat resistance, aging resistance, easy adhesion to other substrates, and no molten droplets generated during combustion. The ceramic inner shell 12 made of ceramic also has a good heat-insulating effect.

[0053] At the inner top of the coronal pressing cylinder 211, there is fixedly connected a pressing column 213. The other end of the pressing column 213 sequentially passes through the meshing fixing cylinder 214 and the fixing sleeve 221. The pressing column 213 can make the coronal pressing cylinder 211 more convenient to press.

[0054] On the outer wall of the heat-conducting metal pore cage 32, there are equidistantly penetrated and opened with a plurality of through holes 33. The penetrated through holes 33 can effectively ensure that the inorganic phase change block 39 inside the heat-conducting metal pore cage 32 can effectively absorb heat and refrigerate through the through holes 33.

[0055] The top of the bundling cover cylinder 36 extends out of the metal partition cylinder 14 and is fixedly connected with an end cover 38. The diameter of the end cover 38 is larger than the inner diameter of the metal partition cylinder 14. The end cover 38 can effectively make it more convenient to take out the bundling cover cylinder 36.

[0056] On the inner walls of both sides of the bundling cover cylinder 36, there are fixedly connected convex blocks 37, and the convex blocks 37 are arranged to match the through holes 33. The convex blocks 37 made of rubber material can effectively make the bundling cover cylinder 36 stably sleeved on the top of the heat-conducting metal pore cage 32.

[0057] When the double-pressure closing component 2 is opened, press down the pressing column 213 extending out of the fixed sleeve 221. When the pressing column 213 is pressed, it can drive the coronal rotating cylinder 29 and the ceramic heat insulation cover plate 23 to move downward through the coronal pressing cylinder 211. When the ceramic heat insulation cover plate 23 and the coronal rotating cylinder 29 move downward, they will be subjected to the elastic force of the spring 28. The elastic force of the spring 28 can apply an upward thrust to the coronal rotating cylinder 29, so that the wedge-shaped teeth 215 on the outer wall of the coronal rotating cylinder 29 will rotate 30° along the engagement groove 218 on the engagement fixed cylinder 214 and be inserted into the internal reset groove 217, so that the distance between the ceramic heat insulation cover plate 23 and the metal outer cover plate 21 is reduced and they are attached under the action of the elastic force of the spring 28. At this time, the horizontal plane of the ceramic heat insulation cover plate 23 is above the horizontal plane of the partition plate 15, so that the metal outer cover plate 21 can rotate upward around the first rotating shaft 22 to open the cover plate of the box body, and the items to be transported for fresh-keeping and refrigeration can be placed in the storage cavity separated by the partition plate 15 inside the heat preservation lining 13;

[0058] When closing the cover plate, reversely turn the metal outer cover plate 21 downward around the first rotating shaft 22 until the top of the metal outer cover plate 21 is flush with the top of the metal shell 11, as shown in the attached Figure 1 figure. Press down the pressing column 213 again. The pressing column 213 drives the coronal pressing cylinder 211 to push the coronal rotating cylinder 29 and the ceramic heat insulation cover plate 23 to move downward again. Similarly, under the action of the elastic force of the spring 28, the wedge-shaped teeth 215 will be separated from the inside of the reset groove 217, rotate 30° after separation and slide along the wedge-shaped surface into the engagement groove 218. At this time, the distance between the ceramic heat insulation cover plate 23 and the metal outer cover plate 21 increases, and the ceramic heat insulation cover plate 23 is located inside the storage cavity. The ceramic heat insulation cover plate 23 cannot be turned over, and the metal outer cover plate 21 cannot be turned over through the fixed rod 25 either, which is the locked state. It can effectively avoid the problem that the metal outer cover plate 21 automatically rotates upward and opens along the first rotating shaft 22 during transportation, resulting in heat or cold air loss inside the box body, and can make the fresh-keeping and refrigeration effect of the device better;

[0059] The detachable refrigeration component 3 is directly plugged into the metal cylinder 14 inside the partitioned housing component 1 after refrigeration. The inorganic phase change block 39 in the heat-conducting metal hole cage 32 of the detachable refrigeration component 3 can refrigerate and convey cold air along the through hole 33 and the metal cylinder 14 to the inside of the storage cavity to preserve and refrigerate items, which can maximize the refrigeration effect. The detachable refrigeration component 3 can be energized by being placed in the refrigeration device, which can effectively make the volume of the refrigeration container smaller and does not require power supply. Moreover, multiple groups of inorganic phase change blocks 39 are respectively arranged in the four heat-conducting metal hole cages 32, and the four heat-conducting metal hole cages 32 can be completely opened through the articulated base 31, which can effectively make it more convenient and fast to place the inorganic phase change block 39 inside the refrigeration device for energization.

[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 by the above embodiments. The above-described embodiments and the descriptions in the specification are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. Portable fresh-keeping and refrigerating device without power supply, characterized in that, it includes a partitioned housing assembly (1), a double-pressure closing assembly (2) and a separable refrigeration assembly (3). The double-pressure closing assembly (2) is arranged above the partitioned housing assembly (1), and the separable refrigeration assembly (3) is arranged inside the partitioned housing assembly (1); The partitioned housing assembly (1) includes a metal outer shell (11), a ceramic inner shell (12), a heat-insulating lining (13), a metal partition cylinder (14) and a partition board (15). The ceramic inner shell (12) is arranged inside the metal outer shell (11), and a heat-insulating lining (13) is arranged between the metal outer shell (11) and the ceramic inner shell (12). A metal partition cylinder (14) is fixedly bonded at the central position inside the ceramic inner shell (12). Partition boards (15) are fixedly connected to the outer cylinder walls around the metal partition cylinder (14). The metal partition cylinder (14) and the partition boards (15) can effectively divide the ceramic inner shell (12) into a refrigeration chamber at the central position and four storage chambers of the same size; The double-pressure closing assembly (2) includes metal outer cover plates (21). There are four metal outer cover plates (21), and the four metal outer cover plates (21) are respectively arranged directly above the four storage chambers. A ceramic heat-insulating cover plate (23) is arranged below the metal outer cover plate (21). First grooves (24) adapted to the metal partition cylinder (14) are respectively formed at one ends of the metal outer cover plate (21) and the ceramic heat-insulating cover plate (23) close to the metal partition cylinder (14). A first rotating shaft (22) is rotatably inserted at one end of the metal outer cover plate (21), and the end of the first rotating shaft (22) extending out of the metal outer cover plate (21) is rotatably inserted into the inner wall of the metal outer shell (11); A number of fixing rods (25) are slidably inserted at the bottom of each ceramic heat-insulating cover plate (23). One end of the fixing rod (25) passing through the ceramic heat-insulating cover plate (23) is fixedly connected to the metal outer cover plate (21). A limiting block (26) is fixedly connected to the bottom of the fixing rod (25). A second groove (27) adapted to the limiting block (26) is formed at the bottom of the ceramic heat-insulating cover plate (23). A spring (28) is sleeved on the rod wall of one end of the fixing rod (25) located inside the second groove (27); A coronal rotating cylinder (29) is rotatably connected to the top of each of the ceramic heat-insulating cover plates (23). A plurality of first engaging teeth (210) are equidistantly formed at one end of the coronal rotating cylinder (29) away from the ceramic heat-insulating cover plate (23). A coronal pressing cylinder (211) is arranged above the coronal rotating cylinder (29). A plurality of second engaging teeth (212) adapted to the first engaging teeth (210) are formed at the bottom of the coronal pressing cylinder (211). The first engaging teeth (210) are engaged with the second engaging teeth (212). An engaging fixing cylinder (214) is arranged above the coronal pressing cylinder (211). A third groove (220) adapted to the engaging fixing cylinder (214) is penetratingly formed at the top of the metal outer cover plate (21). A fixing sleeve (221) is arranged above the third groove (220). The fixing sleeve (221) is fixedly adhered to the top of the metal outer cover plate (21). The engaging fixing cylinder (214) is fixedly connected to the inner cylinder wall of the fixing sleeve (221); A plurality of wedge-shaped teeth (215) are equidistantly and fixedly connected to the outer wall of one end of the coronal rotating cylinder (29) extending out of the ceramic heat-insulating cover plate (23); A plurality of guiding teeth (216) are equidistantly and fixedly connected to the outer wall of the coronal pressing cylinder (211); A plurality of reset grooves (217) are penetratingly formed at equal intervals on the outer cylinder wall of the bottom of the engaging fixing cylinder (214). The reset grooves (217) are arranged in a matching manner with the wedge-shaped teeth (215). A plurality of engaging grooves (218) are formed at equal intervals at the bottom of the engaging fixing cylinder (214). A guiding groove (219) is formed on the inner wall of one end of the engaging groove (218) away from the reset groove (217). The guiding groove (219) is arranged in a matching manner with the guiding teeth (216); The split refrigeration assembly (3) includes two articulated bases (31). The two articulated bases (31) are articulated to each other. Two symmetrically arranged heat-conducting metal pore cages (32) are arranged above each of the articulated bases (31). An inorganic phase change block (39) is fixedly connected to the inside of each of the four heat-conducting metal pore cages (32). Fixing plates (34) are fixedly connected to both ends of the top of the articulated base (31). A second rotating shaft (35) is fixedly connected to the outer wall of the heat-conducting metal pore cage (32) corresponding to the position of the adjacent fixing plate (34). One end of the second rotating shaft (35) away from the heat-conducting metal pore cage (32) is rotatably inserted into the plate wall of the fixing plate (34). A bundling cover cylinder (36) is arranged above the heat-conducting metal pore cage (32). The bundling cover cylinder (36) is sleeved on the outer wall of the heat-conducting metal pore cage (32), and the bundling cover cylinder (36) is inserted into the inner top of the metal partition cylinder (14).

2. The non-powered portable fresh-keeping and refrigerating device according to claim 1, wherein: The heat-insulating inner lining (13) is made of rigid polyurethane foam, and the ceramic inner shell (12) is made of ceramic material.

3. The non-powered portable fresh-keeping and refrigerating device according to claim 1, It is characterized in that: A pressing column (213) is fixedly connected to the inner top of the coronal pressing cylinder (211), and the other end of the pressing column (213) sequentially passes through the meshing fixed cylinder (214) and the fixed sleeve (221).

4. The non-powered portable fresh-keeping and refrigerating device according to claim 1, It is characterized in that: A plurality of through holes (33) are equidistantly penetrated through the outer wall of the heat-conducting metal hole cage (32).

5. The non-powered portable fresh-keeping and refrigerating device according to claim 1, It is characterized in that: The top of the bundling cover cylinder (36) extends out of the metal partition cylinder (14) and is fixedly connected with an end cover (38), and the diameter of the end cover (38) is larger than the inner diameter of the metal partition cylinder (14).

6. The non-powered portable fresh-keeping and refrigerating device according to claim 1, It is characterized in that: Convex blocks (37) are fixedly connected to the inner walls on both sides of the bundling cover cylinder (36), and the convex blocks (37) are arranged to be matched with the through holes (33).

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