Double-barrelled thermos

Abstract

The application discloses a double-barrel heat preserver, which comprises a heat preserver main body and a cover assembly. A semiconductor refrigeration sheet and a heat dissipation assembly are arranged at the bottom of a cold-conducting outer barrel of the heat preserver main body. An inner barrel is detachably inserted into the accommodating cavity of the cold-conducting outer barrel. The heat preserver main body is provided with an air duct, an air inlet and an air outlet. The cover assembly is arranged on the heat preserver main body in an openable and closable mode. A disc seal and a sealing ring are concentrically arranged at the bottom of the cover assembly. The inner ring diameter of the sealing ring is larger than the outer ring diameter of the disc seal. When the cover assembly is closed on the heat preserver main body, the disc seal is sealingly matched with the inner barrel, and the sealing ring is sealingly matched with the annular convex part. The inner barrel is hingedly provided with a handle. The bottom of the annular convex part is inwardly bent to form a support step. When the inner barrel is arranged in the accommodating cavity, the annular convex part and the inner barrel are limited to define a receiving space for the handle above the support step. The heat preserver has the effects of improving the sealing performance and cold insulation performance of the heat preserver by using double sealing, being more convenient to operate, saving energy and being environment-friendly.

Description

Technical Field

[0001] This invention relates to the field of thermal insulation equipment technology, and in particular to a double-barrel thermal insulation device. Background Technology

[0002] A Chinese patent with publication number CN213536047U discloses a refrigerated and corrosion-resistant trash can, including an outer bucket with a top cover, a refrigeration device, and an inner bucket. The outer bucket has an insulation layer, and the inner bucket is placed inside the outer bucket. The top cover has an insulation layer. A refrigeration device is provided at the bottom of the outer bucket where it contacts the inner bucket. The inner bucket is made of a heat-conducting material.

[0003] However, the above-mentioned trash can has the following drawbacks: like most refrigeration equipment on the market, the lid of this trash can is placed directly on top of the outer bin, and the odor in the inner bin will diffuse into the cavity of the outer bin. Some odor will escape through the gap between the lid and the outer bin, resulting in poor sealing and easy loss of cooling capacity and diffusion of odors, which urgently needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a double-barrel insulator that improves the sealing and cold-keeping performance of the insulator by utilizing double sealing, makes operation more convenient, and is energy-saving and environmentally friendly.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a double-barrel heat preservation device, comprising a heat preservation device body and a cover assembly, wherein the heat preservation device body comprises a cooling outer liner, an inner liner and a semiconductor cooling chip for cooling the cooling outer liner, the cooling outer liner having an upwardly opening receiving cavity, the inner liner being detachably inserted into the receiving cavity, and the outer wall of the inner liner contacting the inner wall of the receiving cavity for cooling; The semiconductor cooling chip has a cooling end and a heating end. The bottom of the cooling outer shell is fixedly connected to a cooling component by several fasteners. The cooling end cools the cooling outer shell through the cooling component. The heating end is connected to a heat dissipation component. The main body of the heat insulator is provided with an air duct and an air inlet and an air outlet connected to both ends of the air duct. The heat dissipation component is located inside the air duct. The main body of the heat insulator includes an annular protrusion surrounding the edge of the opening of the receiving cavity. A disc seal and a sealing ring are concentrically installed at the bottom of the cover assembly. The inner diameter of the sealing ring is larger than the outer diameter of the disc seal. When the cover assembly is closed on the main body of the heat insulator, the disc seal is sealed with the inner liner, and the sealing ring is sealed with the annular protrusion. The inner liner is hinged with a handle, and the bottom of the annular protrusion is bent inward to form a support step. When the inner liner is placed in the receiving cavity, the annular protrusion and the inner liner define a storage space for accommodating the handle in the area above the support step.

[0006] By adopting the above technical solution, during use, the cooling end of the semiconductor cooling chip cools the outer cooling liner through the cooling conductor, and the outer cooling liner then cools the inner liner, achieving the purpose of keeping the food or waste in the inner liner cold. The cooling conductor increases the distance between the bottom of the outer cooling liner and the heating end of the semiconductor cooling chip, effectively reducing the impact of the heat generated by the heating end on the temperature of the outer cooling liner. At the same time, the heat generated by the heating end of the semiconductor cooling chip exchanges heat with the airflow in the air duct through the heat dissipation component, realizing the release of heat from the heating end. When the cover assembly is placed on the main body of the insulator, the disc seal on the inner side of the cover assembly seals with the inner liner, and the sealing ring on the outer side of the cover assembly seals with the annular protrusion. Utilizing the double sealing effect of the disc seal and the sealing ring, odor leakage can be effectively prevented, and cold air can be firmly locked in the main body of the insulator, reducing the amount of cold air leakage. At the same time, it can also effectively improve the heat preservation and cold preservation effect of the present invention, thereby achieving energy saving and environmental protection. The purpose of this invention is to improve the space utilization and compactness of the invention in the height direction when the inner liner is built into the receiving cavity of the cooling outer liner. The handle on the inner liner can be hidden in the storage space of the main body of the insulator without interfering with the cover assembly. When it is necessary to transfer the items in the inner liner, the operator can use the handle to lift the inner liner from the cooling outer liner, making the operation more convenient. Especially when it is necessary to put a plastic bag in the inner liner and then put refrigerated items in the plastic bag, the user can carry the plastic bag containing the refrigerated items to the destination while transporting the refrigerated items. After arriving at the destination, the plastic bag containing the refrigerated items can be taken out of the inner liner. This effectively avoids the plastic bag from breaking when transporting it by directly lifting it because the refrigerated items are too heavy or there are sharp objects. It has the effects of improving the sealing and cold preservation performance of the insulator by using double sealing, making the operation more convenient, and being energy-saving and environmentally friendly.

[0007] A further feature of the present invention is that the cover assembly includes an upper cover and a lower cover, which are fixedly connected by a snap-fit ​​structure. A U-shaped heat-insulating cavity is formed between the upper cover and the lower cover. The heat-insulating cavity includes a cover heat-insulating area and a side heat-insulating area surrounding the bottom edge of the cover heat-insulating area. The edge of the cover heat-insulating area communicates with the upper end of the side heat-insulating area, and both the cover heat-insulating area and the heat-insulating area are filled with upper heat-insulating cotton.

[0008] By adopting the above technical solution, the enclosed insulation structure of the cover insulation zone and the side insulation zone is used to achieve full-enclosed insulation of the upper surface and outer periphery of the annular protrusion, thereby improving the cold insulation performance of the cover assembly for the main body of the insulator.

[0009] A further feature of the present invention is that the middle part of the handle is bent outward to form an extraction part, and the annular protrusion has an avoidance groove for receiving the extraction part. When the cover assembly is placed on the body of the heat preservation device, the upper end face of the extraction part abuts and seals with the lower end face of the sealing ring.

[0010] By adopting the above technical solution, when the handle is stored in the corresponding storage space, the extraction part of the handle will be stored in the relief groove. At this time, the lower end face of the sealing ring abuts and seals with the upper end face of the extraction part, which can effectively reduce the leakage of cold air and odors in the relief groove.

[0011] A further configuration of the present invention is as follows: the main body of the heat insulator includes an outer shell and a base, the air inlet is opened on the base, a partition is provided on the base, an installation cavity is opened in the middle of the partition, the heat dissipation component is installed on the partition through the installation cavity, and a lower heat insulation layer is filled between the partition, the inner side of the outer shell and the outer wall of the cooling outer liner.

[0012] By adopting the above technical solution, the heat dissipation components can be accurately and securely installed in the air duct through the partition, while the lower insulation layer can improve the heat preservation effect of the heat-conducting outer shell.

[0013] A further configuration of the present invention is as follows: the outer shell includes a front panel, a rear panel, and two side panels. The rear panel and the two side panels are each provided with an air outlet. The air outlet on the rear panel includes a plurality of upper air outlets and lower air outlets. The upper air outlets are distributed above the horizontal plane where the partition is located. The lower air outlets and the air outlets on the two side panels are distributed below the horizontal plane where the partition is located. An air passage gap is formed between the rear panel and the partition. An exhaust duct is formed between the rear panel and the lower insulation layer. The upper air outlets are connected to the air duct in sequence through the exhaust duct and the air passage gap.

[0014] By adopting the above technical solution, the airflow in the duct exchanges heat with the heat dissipation components to generate hot air. Part of the hot air is discharged directly through the air outlets on the two side panels, and the other part of the hot air is discharged from the lower air outlet at the bottom of the rear panel. When the hot airflow in the duct is large, the excess hot air can also be discharged from the upper air outlet after passing through the exhaust duct and the air gap, thereby reducing the airflow speed of the hot air and reducing the airflow noise.

[0015] A further configuration of the present invention is as follows: the heat dissipation assembly includes heat dissipation fins and a heat dissipation fan disposed in the air duct, the heat dissipation fins include a heat-conducting plate and a plurality of heat dissipation fins integrally disposed on the heat-conducting plate, a heat dissipation gap is formed between adjacent heat dissipation fins, the heat-conducting plate is attached to the bottom of the heating end, the heat dissipation fan is disposed below the heat dissipation fins, and the heat dissipation gap is correspondingly disposed to the air inlet or air outlet of the heat dissipation fan.

[0016] By adopting the above technical solution, the heat-conducting plate absorbs the heat generated by the heating end of the semiconductor cooling chip and transfers it to the heat sink. The cooling fan can draw the cold air from the air inlet into the air duct. When the cold air passes through the heat dissipation gap, it comes into large-area contact with the heat sink to achieve heat exchange, thereby cooling the heat sink.

[0017] A further feature of the present invention is that: the cooling conductor has lugs on both sides, and the heat dissipation fins are fixedly connected to the lugs by bolts made of heat insulation material, so that the semiconductor cooling chip is clamped and fixed between the heat dissipation fins and the cooling conductor. The semiconductor cooling chip is surrounded by heat insulation cotton, which is used to isolate the heat transfer between the cooling end and the heating end. The bolts pass through the heat insulation cotton.

[0018] By adopting the above technical solution, the addition of the lug can effectively avoid the bolt and the thermoelectric cooler. The bolt made of heat insulation material can effectively prevent the heat from the heat sink fins from being transferred to the heat conduction component, thus affecting the heat conduction effect of the heat conduction component. In addition, the connection method of the bolt can keep the entire cooling end of the thermoelectric cooler and the bottom surface of the heat conduction component in close contact, thereby improving the heat transfer efficiency between the thermoelectric cooler and the heat conduction component.

[0019] A further feature of the present invention is that: a mounting hole is provided through the heat-conducting plate, a mounting sleeve is inserted into the mounting hole, a through hole is provided in the mounting sleeve corresponding to the bolt, the bolt is inserted into the through hole, and the axis of the through hole is eccentrically set with respect to the axis of the mounting sleeve.

[0020] By adopting the above technical solution, the eccentrically designed through hole can prevent the mounting sleeve from rotating unexpectedly when the bolt is turned.

[0021] A further feature of the present invention is that the bottom of the cover assembly is recessed inward to form a cavity, and a snap-fit ​​post is provided at the bottom of the cavity. The disc seal is provided with a snap-fit ​​sleeve corresponding to the snap-fit ​​post. The snap-fit ​​sleeve is made of an elastic polymer material. The snap-fit ​​post and the snap-fit ​​sleeve are inserted and engaged, so that the disc seal can be detachably installed at the bottom of the cover assembly.

[0022] By adopting the above technical solution, the snap-fit ​​post is hidden at the bottom of the cavity, which reduces the area occupied by the snap-fit ​​post on the inner liner's refrigeration space, thereby increasing the refrigeration volume of the inner liner.

[0023] A further configuration of the present invention is as follows: a handle is provided on the side of the disc seal away from the snap-fit ​​sleeve; an annular positioning part is provided vertically on the upper and lower sides of the edge of the disc seal; an annular groove is provided on the cover assembly corresponding to the annular positioning part; the disc seal engages with the annular groove through the annular positioning part on one side; and the disc seal is inserted and sealed with the inner liner through the annular positioning part on the other side.

[0024] By adopting the above technical solution, the operator can quickly install the disc seal on the cover assembly using the handle, and improve the installation stability of the disc seal at the bottom of the cover assembly by using the snap-fit ​​action of the annular positioning part and the annular groove. Alternatively, the operator can quickly remove the disc seal from the bottom of the cover assembly using the handle, and then flip the disc seal horizontally and cover it on the inner liner for sealing.

[0025] In summary, the present invention has the following beneficial effects: This device employs a semiconductor cooling chip and heat dissipation assembly installed at the bottom of the cooling-conducting outer liner of the insulator body. A removable inner liner is inserted into the cavity of the outer liner, and a handle is provided on the inner liner. A cover assembly is also installed on the insulator body, with a disc seal and sealing ring concentrically mounted at the bottom of the cover assembly. During use, the cooling end of the semiconductor cooling chip cools the cooling-conducting outer liner through the cooling conductor, which in turn cools the inner liner, achieving the purpose of keeping food or waste in the inner liner cold. The cooling conductor increases the connection between the bottom of the cooling-conducting outer liner and the semiconductor cooling chip. The distance between the heating elements effectively reduces the impact of heat generated at the heating elements on the temperature of the cooling outer liner. Simultaneously, the heat generated at the heating element of the semiconductor cooling chip is released through heat exchange between the heat dissipation component and the airflow within the duct. When the cover assembly is placed on the main body of the insulator, the inner disc seal of the cover assembly seals against the inner liner, while the outer sealing ring seals against the annular protrusion. This dual sealing effect of the disc seal and the sealing ring effectively prevents odor leakage and securely locks in the cold air. The main body of the insulator reduces cold air leakage and effectively improves the heat preservation and cold retention effect, thereby achieving the purpose of energy saving and environmental protection. In addition, when the inner liner is built into the receiving cavity of the cold-conducting outer liner, the handle on the inner liner can be hidden in the storage space of the main body of the insulator without interfering with the cover assembly. This can improve the space utilization and compactness of the invention in the height direction. When it is necessary to transfer items in the inner liner, the operator can use the handle to lift the inner liner from the cold-conducting outer liner, making the operation more convenient. Especially when it is necessary to put a plastic bag in the inner liner and then put refrigerated items in the plastic bag, when transporting refrigerated items, the user can carry the plastic bag containing refrigerated items along with the inner liner to the predetermined location. After arriving at the destination, the plastic bag containing refrigerated items can be removed from the inner liner. This effectively avoids the plastic bag from breaking when transporting it directly by carrying it because the refrigerated items are too heavy or contain sharp objects. It has the effects of improving the sealing and cold retention performance of the insulator by using double sealing, making the operation more convenient, and saving energy and protecting the environment. Attached Figure Description

[0026] Figure 1 This is an overall structural diagram of the present invention, with the cover assembly open relative to the main body of the heat insulator.

[0027] Figure 2 This is a schematic diagram of the inner liner of the present invention being removed separately from the cooling outer liner, with the disc seal covering the inner liner.

[0028] Figure 3 This is a cross-sectional view of the cover assembly of the present invention in the closed state relative to the main body of the heat insulator.

[0029] Figure 4 This is the present invention. Figure 3 A magnified view of a portion of region A in the middle.

[0030] Figure 5 This is the present invention. Figure 3 A magnified view of a portion of region B in the middle.

[0031] Figure 6 This is a view showing the disc seal and sealing ring of the present invention separated from the cover assembly.

[0032] Figure 7 This is an exploded view of the present invention.

[0033] Figure 8 This is the present invention. Figure 7 A magnified view of a portion of region C.

[0034] Figure 9 This is a longitudinal sectional view of the rotating shaft portion of the present invention.

[0035] Figure 10 This is the present invention. Figure 9 A magnified view of a portion of region D.

[0036] Figure 11 This is an exploded view of the front fixing bracket and unlocking button of the present invention.

[0037] Figure 12 This is a schematic diagram showing the connection of the cooling outer shell, cooling component, semiconductor cooling chip and heat dissipation assembly of the present invention.

[0038] Figure 13 This is the present invention. Figure 12 A longitudinal sectional view.

[0039] Figure 14 This is the present invention. Figure 13 A magnified view of a portion of region E in the middle.

[0040] Figure 15 This is an exploded view of the semiconductor cooling chip, the cooling conductor, and the heat sink fins of the present invention.

[0041] Figure 16 This is a longitudinal sectional view of the main body of the heat preservation device of the present invention.

[0042] Figure 17 This is the present invention. Figure 16 A magnified view of a portion of region F in the middle.

[0043] In the diagram: 1. Main body of the insulator; 101. Air duct; 102. Air inlet; 103. Air outlet; 104. Storage space; 11. Cooling outer liner; 111. Receiving cavity; 112. Fastener; 113. Temperature detector; 12. Semiconductor cooling chip; 121. Cooling end; 122. Heating end; 13. Insulation cotton; 14. Cooling component; 141. Lug; 15. Bolt; 16. Inner liner; 161. Handle mounting part; 1611. Handle; 1612. Lifting part; 162. Storage part; 17. Lower insulation layer; 2. Outer shell; 2 0. Clearance hole; 201. Upper opening area; 202. Side opening area; 21. Front panel; 211. Switch button; 212. Electronic control board; 213. Unlock button; 2131. Rotating shaft; 2132. Locking tongue; 2133. Reset part; 2134. Pressing part; 214. Front fixing bracket; 2140. Pin hole; 2141. Locking spring; 22. Rear panel; 220. Exhaust duct; 221. Upper air outlet; 222. Lower air outlet; 223. Hanging lug; 2231. Positioning post; 2232. Anti-rotation groove; 224. 1. Hinge shaft; 2241, positioning hole; 2242, anti-rotation block; 225, torsion spring; 23, side panel; 24, annular protrusion; 241, clearance groove; 25, support step; 3. Base; 31, partition plate; 311, horizontal isolation part; 3111, mounting cavity; 3112, air passage gap; 312, vertical isolation part; 3121, main control board; 4. Heat dissipation assembly; 41, heat dissipation fins; 410, positioning groove; 411, heat conduction plate; 4111, mounting hole; 4112, mounting sleeve; 41121, through hole; 412, heat dissipation fins; 4121. Heat dissipation gap; 42. Heat dissipation fan; 5. Cover assembly; 50. Insulation cavity; 501. Cover insulation area; 502. Side insulation area; 51. Upper cover; 52. Lower cover; 521. Recessed cavity; 522. Snap-fit ​​post; 523. Annular groove; 524. Rotating connection part; 5241. Mounting cover; 525. Locking mating part; 5251. Locking hole; 526. Snap-fit ​​groove; 53. Upper insulation cotton; 6. Disc seal; 61. Snap-fit ​​sleeve; 62. Handle; 63. Annular positioning part; 7. Sealing ring; 71. Snap-fit ​​part. Detailed Implementation

[0044] The invention will now be further described with reference to the accompanying drawings.

[0045] A type of double-barrel insulator, such as Figures 1-17As shown, the device includes a heat exchanger body 1 and a cover assembly 5. The heat exchanger body 1 includes a cooling outer liner 11, an inner liner 16, and a semiconductor cooling chip 12 for cooling the cooling outer liner 11. The cooling outer liner 11 has an upward-opening receiving cavity 111. The inner liner 16 is detachably inserted into the receiving cavity 111, and the outer wall of the inner liner 16 contacts the inner wall of the receiving cavity 111 for heat conduction. A temperature detector 113 is provided on the top outer wall of the cooling outer liner 11. The temperature detector 113 is electrically connected to the main control board 3121 and is used to detect the temperature of the cooling outer liner 11 in real time. The semiconductor cooling chip 12... The device has a cooling end 121 and a heating end 122. The bottom of the cooling outer liner 11 is fixedly connected to a cooling element 14 by several fasteners 112. In this embodiment, the fasteners 112 are screws. The cooling end 121 cools the cooling outer liner 11 through the cooling element 14. The heating end 122 is connected to a heat dissipation assembly 4. The heat preservation body 1 is provided with an air duct 101 and an air inlet 102 and an air outlet 103 communicating with both ends of the air duct 101. The heat dissipation assembly 4 is located inside the air duct 101. The heat preservation body 1 includes an annular protrusion 24 surrounding the edge of the opening of the receiving cavity 111. A disc seal is concentrically installed at the bottom of the cover assembly 5. The sealing ring 7 and the sealing element 6 are used. The inner diameter of the sealing ring 7 is larger than the outer diameter of the disc seal 6. When the cover assembly 5 is closed on the heat preservation body 1, the disc seal 6 is sealed with the inner liner 16, and the sealing ring 7 is sealed with the annular protrusion 24. In this embodiment, the upper end face of the annular protrusion 24 is set as a plane. The bottom of the sealing ring 7 contacts and seals with the upper end plane of the annular protrusion 24. The side wall of the sealing ring 7 is integrally provided with a snap-fit ​​part 71. The cover assembly 5 is provided with a snap-fit ​​groove 526 corresponding to the snap-fit ​​part 71. The snap-fit ​​part 71 and the corresponding snap-fit ​​groove 526 are engaged to realize the sealing ring 7 in the cover assembly 5. The bottom is detachable; the inner liner 16 includes a handle mounting portion 161 for mounting handles 1611 and a storage portion 162 located below the handle mounting portion 161. The handle mounting portion 161 has a straight cylindrical structure, and the diameter of the storage portion 162 gradually decreases from top to bottom. The inner liner 16 has two handles 1611 hinged to the outer wall of the handle mounting portion 161. The bottom of the annular protrusion 24 is bent inward to form a support step 25. When the inner liner 16 is placed in the receiving cavity 111, the annular protrusion 24 and the inner liner 16 define a storage space 104 for accommodating the handles 1611 in the area above the support step 25.

[0046] like Figures 3-8As shown, the cover assembly 5 includes an upper cover 51 and a lower cover 52, which are fixedly connected by a snap-fit ​​structure. A U-shaped insulation cavity 50 is formed between the upper cover 51 and the lower cover 52. The insulation cavity 50 includes a cover insulation area 501 and a side insulation area 502 surrounding the bottom edge of the cover insulation area 501. The edge of the cover insulation area 501 communicates with the upper end of the side insulation area 502. Both the cover insulation area 501 and the insulation area are filled with upper insulation cotton 53. Utilizing the wrap-around insulation structure of the cover insulation area 501 and the side insulation area 502, a fully enclosed insulation is achieved for the upper surface and outer periphery of the annular protrusion 24. The handle 1611 is bent outward in the middle to form an extraction part 1612. The annular protrusion 24 has a relief groove 241 for receiving the extraction part 1612. When the cover assembly 5 is placed on the heat preservation body 1, the upper end face of the extraction part 1612 abuts and seals with the lower end face of the sealing ring 7. When the handle 1611 is stored in the corresponding storage space 104, the extraction part 1612 of the handle 1611 will be stored in the relief groove 241. At this time, the lower end face of the sealing ring 7 abuts and seals with the upper end face of the extraction part 1612, which can effectively reduce the leakage of cold air and odor at the relief groove 241.

[0047] like Figures 1-3 and Figure 7As shown, the main body 1 of the heat exchanger includes an outer shell 2 and a base 3. An air inlet 102 is opened on the base 3. A partition 31 is provided on the base 3. An installation cavity 3111 is opened in the middle of the partition 31. The heat dissipation component 4 is installed on the partition 31 through the installation cavity 3111. A lower insulation layer 17 is filled between the upper part of the partition 31, the inner side of the outer shell 2 and the outer wall of the cooling outer liner 11, so that the heat dissipation component 4 can be accurately and firmly installed in the air duct 101 through the partition 31. At the same time, the lower insulation layer 17 is filled between the partition 31 and the inner side of the outer shell 2 and the outer wall of the cooling outer liner 11. Layer 17 can improve the cold insulation effect of the cooling outer shell 11; the outer shell 2 includes a front panel 21, a rear panel 22 and two side panels 23. The rear panel 22 and the two side panels 23 are all provided with air outlets 103. The air outlets 103 on the rear panel 22 include several upper air outlets 221 and lower air outlets 222. The upper air outlets 221 are distributed above the horizontal plane where the partition 31 is located. The lower air outlets 222 and the air outlets 103 on the two side panels 23 are all distributed on the partition. Below the horizontal plane where 31 is located, a gap 3112 is formed between the rear panel 22 and the partition 31, and an exhaust duct 220 is formed between the rear panel 22 and the lower insulation layer 17. The upper air outlet 221 is connected to the air duct 101 through the exhaust duct 220 and the gap 3112 in sequence. The airflow in the air duct 101 generates hot air after exchanging heat with the heat dissipation component 4. Part of the hot air is directly discharged through the air outlets 103 on the two side panels 23, and the other part of the hot air is discharged from the lower air outlet 222 at the bottom of the rear panel 22. When the hot airflow in the air duct 101 is large, the excess hot air can also be discharged through the exhaust duct 220 and the gap 3112 and then through the upper air outlet 221 to reduce the airflow speed and reduce the airflow noise. In other embodiments, the air inlet 102 can also be opened on the side panel 23, and the air outlet 103 is correspondingly opened on the base 3, with the corresponding airflow direction being opposite to the airflow direction in the air duct.

[0048] like Figures 3-15As shown, the heat dissipation assembly 4 includes heat dissipation fins 41 and a heat dissipation fan 42 disposed within the air duct 101. The top of the heat dissipation fins 41 has a positioning groove 410 corresponding to the thermoelectric cooler 12. The bottom of the thermoelectric cooler 12 is inserted into and positioned within the positioning groove 410. The heat dissipation fins 41 include a heat-conducting plate 411 and several heat dissipation fins 412 integrally disposed on the heat-conducting plate 411. A heat dissipation gap 4121 is formed between adjacent heat dissipation fins 412. The heat-conducting plate 411 is attached to the bottom of the heating end 122. The heat dissipation fan 42 is disposed below the heat dissipation fins 412, and the air inlet of the heat dissipation fan 42 is correspondingly arranged with the air inlet 102. In this embodiment, the air outlet of the heat dissipation fan 42 is connected to the heat dissipation fins 412. A corresponding heat-conducting plate 411 is provided to absorb the heat generated by the heating end 122 of the semiconductor cooling chip 12 and transfer it to the heat sink 412. A cooling fan 42 can draw cold air from the air inlet 102 into the air duct 101. When the cold air passes through the heat dissipation gap 4121, it comes into large-area contact with the heat sink 412 to achieve heat exchange, thereby cooling the heat sink 412. In other embodiments, the air inlet of the cooling fan 42 can also be aligned with the heat dissipation gap 4121 for heat dissipation. Lugs 141 are provided on both sides of the cooling component 14. The heat dissipation fins 41 and the lugs 141 are fixedly connected by bolts 15 made of insulating material. The thermoelectric cooler 12 is clamped and fixed between the heat sink fins 41 and the heat conductor 14. In this embodiment, the bolt 15 can be made of PC or other polymer materials with heat insulation properties. A heat insulation cotton 13 is provided around the thermoelectric cooler 12 to isolate heat transfer between the cooling end 121 and the heating end 122. The bolt 15 passes through the heat insulation cotton 13. The addition of the lug 141 allows for effective avoidance between the bolt 15 and the thermoelectric cooler 12. The heat insulation material of the bolt 15 effectively prevents heat from the heat sink fins 41 from being transferred to the heat conductor 14, thus affecting the heat conduction effect of the heat conductor 14. Furthermore, the connection of the bolt 15... This method allows the entire surface of the cooling end 121 of the thermoelectric cooler 12 to be in close contact with the bottom surface of the heat-conducting component 14, thereby improving the heat transfer efficiency between the thermoelectric cooler 12 and the heat-conducting component 14. A mounting hole 4111 is provided through the heat-conducting plate 411, and a mounting sleeve 4112 is inserted into the mounting hole 4111. A through hole 41121 is provided in the mounting sleeve 4112 corresponding to the bolt 15. The bolt 15 passes through the through hole 41121, and the axis of the through hole 41121 is eccentrically set with the axis of the mounting sleeve 4112. The eccentrically set through hole 41121 can prevent the mounting sleeve 4112 from rotating accidentally when the bolt 15 is turned.In this embodiment, the partition 31 includes a horizontal isolation section 311 and a vertical isolation section 312. The heat preservation unit body 1 is provided with a switch button 211 and an electronic control board 212 electrically connected to the switch button 211. The electronic control board 212 is installed on the inner wall of the front panel 21 facing the air duct 101. A main control board 3121 is installed on the side wall of the vertical isolation section 312. The cooling fan 42, the electronic control board 212, and the semiconductor cooling chip 12 are all electrically connected to the main control board 3121.

[0049] like Figures 1-6 As shown, the bottom of the cover assembly 5 is recessed inward to form a cavity 521. A snap-fit ​​post 522 is provided at the bottom of the cavity 521. The disc seal 6 is provided with a snap-fit ​​sleeve 61 corresponding to the snap-fit ​​post 522. The snap-fit ​​sleeve 61 is made of elastic polymer material. The snap-fit ​​post 522 and the snap-fit ​​sleeve 61 are inserted and matched, so that the disc seal 6 can be detachably installed at the bottom of the cover assembly 5. This allows the snap-fit ​​post 522 to be hidden at the bottom of the cavity 521, reducing the area occupied by the snap-fit ​​post 522 on the refrigeration space of the inner liner 16, thereby increasing the refrigeration volume of the inner liner 16. A handle 62 is provided on the side of the disc seal 6 away from the snap-fit ​​sleeve 61. The edge of the disc seal 6 is vertically provided with rings on both the upper and lower sides. The cover assembly 5 has an annular groove 523 corresponding to the annular positioning part 63. The disc seal 6 is engaged with the annular groove 523 through the annular positioning part 63 on one side, and the disc seal 6 is inserted and sealed with the inner liner 16 through the annular positioning part 63 on the other side. The operator can quickly install the disc seal 6 on the cover assembly 5 through the handle 62, and improve the installation stability of the disc seal 6 at the bottom of the cover assembly 5 by utilizing the engagement action of the annular positioning part 63 and the annular groove 523. Alternatively, the operator can quickly remove the disc seal 6 from the bottom of the cover assembly 5 through the handle 62, and then flip the disc seal 6 horizontally and cover the inner liner 16 for sealing.

[0050] like Figure 3 and Figures 7-11As shown, the rear panel 22 of the heat preservation body 1 is symmetrically provided with two hanging ears 223 at the top, and a hinge shaft 224 is connected between the two hanging ears 223. The lower cover 52 is provided with a rotating connection part 524 corresponding to the hinge shaft 224. An installation cover 5241 is detachably installed above the rotating connection part 524 through a snap-fit ​​structure. A rotating cavity for the hinge shaft 224 to rotate is formed between the rotating connection part 524 and the installation cover 5241. A torsion spring 225 is sleeved on the hinge shaft 224 and is located in the rotating cavity. The torsion spring 225 is connected between the cover assembly 5 and the heat preservation body 1 and assists the cover assembly 5 to move relative to the heat preservation body 1 in the opening direction. In this embodiment, the hanging ears 223 face the hinge. A positioning post 2231 protrudes from the end face of the connecting shaft 224. The lug 223 has anti-rotation grooves 2232 on both sides of the positioning post 2231. The hinge shaft 224 has a positioning hole 2241 corresponding to the positioning post 2231. Anti-rotation blocks 2242 are provided on both sides of the positioning hole 2241 on the hinge shaft 2244. The positioning post 2231 and the positioning hole 2241 are positioned and engaged, and the anti-rotation blocks 2242 and the anti-rotation grooves 2232 are engaged to prevent rotation. The main body 1 of the heat preservation unit is equipped with an unlocking button 213. A front fixing bracket 214 is installed on the inner wall of the front panel 21. Rotating shafts 2131 are symmetrically arranged on both sides of the unlocking button 213. The rotating shafts 2131 are rotatably connected to corresponding pin holes 2140 on the front fixing bracket 214. The upper part of the shell 2 has a clearance hole 20 that allows the unlock button 213 to be exposed. The cover assembly 5 and the unlock button 213 are locked together by a locking structure. The locking structure includes a locking tongue 2132 on the button and a locking engagement part 525 at the bottom of the lower cover 52. The locking tongue 2132 is located on the button. The button also includes a reset part 2133 and a pressing part 2134. The locking tongue 2132 and the reset part 2133 are located on the upper and lower sides of the pivot part 2131, respectively. The pressing part 2134 is located between the reset part 2133 and the locking tongue 2132 and is exposed on the surface of the shell 2 through the clearance hole 20. The user can press the button by pressing the pressing part 2134. The movement causes the locking tongue 2132 and the locking engagement part 525 to move away from each other to unlock. In addition, a locking spring 2141 is provided between the reset part 2133 and the front fixed bracket 214. When the locking tongue 2132 and the locking engagement part 525 are locked together, the locking spring 2141 has an elastic tendency to push the reset part 2133 to rotate in the locking direction, and drives the locking tongue 2132 of the button and the lock hole 5251 on the locking engagement part 525 to remain in a stable locked state. In addition, the clearance hole 20 in this embodiment includes an upper opening area 201 and a side opening area 202 that are interconnected. The upper opening area 201 extends upward through the support step 25, and the side opening area 202 extends through the side wall of the outer shell 2.

[0051] The basic working principle of this invention is as follows: A semiconductor cooling chip 12 and a heat dissipation assembly 4 are arranged at the bottom of the cooling outer liner 11 of the heat insulator body 1. An inner liner 16 is detachably inserted into the receiving cavity 111 of the cooling outer liner 11. A handle 1611 is provided on the inner liner 16. At the same time, a cover assembly 5 is provided on the heat insulator body 1 for opening and closing. A disc sealing element 6 and a sealing ring 7 are concentrically installed at the bottom of the cover assembly 5. In use, the cooling end 121 of the semiconductor cooling chip 12 cools the cooling outer liner 11 through the cooling conductor 14. The cooling outer liner 11 then cools the inner liner 16, thereby achieving the purpose of keeping the food or waste in the inner liner 16 cold. 14. The increased distance between the bottom of the cooling outer liner 11 and the heating end 122 of the semiconductor cooling chip 12 effectively reduces the impact of the heat generated by the heating end 122 on the temperature of the cooling outer liner 11. Simultaneously, the heat generated by the heating end 122 of the semiconductor cooling chip 12 is exchanged with the airflow in the air duct 101 through the heat dissipation component 4, releasing the heat from the heating end 122. When the cover assembly 5 is placed on the heat preservation body 1, the disc seal 6 on the inner side of the cover assembly 5 seals against the inner liner 16, and the sealing ring 7 on the outer side of the cover assembly 5 seals against the annular protrusion 24, utilizing the double seal of the disc seal 6 and the sealing ring 7. This design effectively prevents odor leakage and securely locks cold air within the insulator body 1, reducing cold air leakage and improving the insulation effect, thus achieving energy conservation and environmental protection. Furthermore, when the inner liner 16 is housed within the receiving cavity 111 of the cooling outer liner 11, the handle 1611 on the inner liner 16 can be concealed within the storage space 104 of the insulator body 1, without interfering with the cover assembly 5. This improves the space utilization and compactness in the height direction. When items need to be moved from the inner liner 16, the operator can use the handle 1611 to move the inner liner. 16. Lifting it upwards from the cooling outer liner 11 makes operation more convenient, especially when a plastic bag needs to be placed inside the inner liner 16, and then refrigerated items are placed inside the plastic bag. When transporting refrigerated items, users can carry the plastic bag containing the refrigerated items along with the inner liner 16 to the predetermined location. After arriving at the destination, the plastic bag containing the refrigerated items can be removed from the inner liner 16. This effectively avoids the plastic bag from breaking when transporting it by directly lifting it because the refrigerated items are too heavy or contain sharp objects. It has the effects of improving the sealing and cold preservation performance of the insulator by using double sealing, making operation more convenient, and being energy-saving and environmentally friendly.

[0052] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A double-barrel heat preservation device, comprising a heat preservation device body (1) and a cover assembly (5), characterized in that: The heat preservation body (1) includes a cooling outer liner (11), an inner liner (16), and a semiconductor cooling chip (12) for cooling the cooling outer liner (11). The cooling outer liner (11) has an upward-opening receiving cavity (111). The inner liner (16) is detachably inserted into the receiving cavity (111), and the outer wall of the inner liner (16) contacts the inner wall of the receiving cavity (111) for cooling. The semiconductor cooling chip (12) has a cooling end (121) and a heating end (122). The bottom of the cooling outer shell (11) is fixedly connected to a cooling component (14) by several fasteners (112). The cooling end (121) cools the cooling outer shell (11) through the cooling component (14). The heating end (122) is connected to a heat dissipation component (4). The heat preservation body (1) is provided with an air duct (101) and an air inlet (102) and an air outlet (103) connected to both ends of the air duct (101). The heat dissipation component (4) is located inside the air duct (101). The heat preservation body (1) includes an annular protrusion (24) surrounding the edge of the opening of the receiving cavity (111). The bottom of the cover assembly (5) is concentrically equipped with a disc seal (6) and a sealing ring (7). The inner diameter of the sealing ring (7) is larger than the outer diameter of the disc seal (6). When the cover assembly (5) is closed on the heat preservation body (1), the disc seal (6) is sealed with the inner liner (16), and the sealing ring (7) is sealed with the annular protrusion (24). The inner liner (16) is hinged with a handle (1611), and the bottom of the annular protrusion (24) is bent inward to form a support step (25). When the inner liner (16) is placed in the receiving cavity (111), the annular protrusion (24) and the inner liner (16) define a storage space (104) for accommodating the handle (1611) in the area above the support step (25).

2. The double-barrel heat preservation device according to claim 1, characterized in that: The cover assembly (5) includes an upper cover (51) and a lower cover (52). The upper cover (51) and the lower cover (52) are fixedly connected by a snap-fit ​​structure. A U-shaped heat-insulating cavity (50) is formed between the upper cover (51) and the lower cover (52). The heat-insulating cavity (50) includes a cover heat-insulating area (501) and a side heat-insulating area (502) surrounding the bottom edge of the cover heat-insulating area (501). The edge of the cover heat-insulating area (501) is connected to the upper end of the side heat-insulating area (502). Both the cover heat-insulating area (501) and the heat-insulating area are filled with upper heat-insulating cotton (53).

3. A double-barrel heat preservation device according to claim 1, characterized in that: The handle (1611) is bent outward in the middle to form an extraction part (1612). The annular protrusion (24) has a relief groove (241) for receiving the extraction part (1612). When the cover assembly (5) is placed on the heat preservation body (1), the upper end face of the extraction part (1612) abuts and seals with the lower end face of the sealing ring (7).

4. A double-barrel heat preservation device according to claim 1, characterized in that: The main body (1) of the heat insulator includes an outer shell (2) and a base (3). The air inlet (102) is opened on the base (3). A partition (31) is provided on the base (3). An installation cavity (3111) is opened in the middle of the partition (31). The heat dissipation component (4) is installed on the partition (31) through the installation cavity (3111). A lower heat insulation layer (17) is filled between the upper part of the partition (31), the inner side of the outer shell (2) and the outer wall of the cooling outer liner (11).

5. A double-barrel heat preservation device according to claim 4, characterized in that: The outer casing (2) includes a front panel (21), a rear panel (22), and two side panels (23). The rear panel (22) and the two side panels (23) are each provided with an air outlet (103). The air outlet (103) on the rear panel (22) includes several upper air outlets (221) and lower air outlets (222). The upper air outlets (221) are located above the horizontal plane where the partition (31) is located. The lower air outlets (222) and the two side panels (23) are... The air outlets (103) on the side panel (23) are all located below the horizontal plane where the partition (31) is located. A gap (3112) is formed between the rear panel (22) and the partition (31). An exhaust duct (220) is formed between the rear panel (22) and the lower insulation layer (17). The upper air outlet (221) is connected to the air duct (101) in sequence through the exhaust duct (220) and the gap (3112).

6. A double-barrel insulator according to claim 1, characterized in that: The heat dissipation assembly (4) includes heat dissipation fins (41) and a heat dissipation fan (42) disposed in the air duct (101). The heat dissipation fins (41) include a heat-conducting plate (411) and a plurality of heat dissipation fins (412) integrally disposed on the heat-conducting plate (411). A heat dissipation gap (4121) is formed between adjacent heat dissipation fins (412). The heat-conducting plate (411) is attached to the bottom of the heating end (122). The heat dissipation fan (42) is disposed below the heat dissipation fins (412), and the heat dissipation gap (4121) is correspondingly disposed to the air inlet or air outlet of the heat dissipation fan (42).

7. A double-barrel insulator according to claim 6, characterized in that: The cooling component (14) has lugs (141) on both sides. The heat dissipation fins (41) and the lugs (141) are fixedly connected by bolts (15) made of heat insulation material, so that the semiconductor cooling chip (12) is clamped and fixed between the heat dissipation fins (41) and the cooling component (14). The semiconductor cooling chip (12) is surrounded by heat insulation cotton (13), which is used to isolate the heat transfer between the cooling end (121) and the heating end (122). The bolts (15) penetrate the heat insulation cotton (13).

8. A double-barrel heat preservation device according to claim 7, characterized in that: The heat-conducting plate (411) has a through hole (4111) and a mounting sleeve (4112) is inserted into the mounting hole (4111). The mounting sleeve (4112) has a through hole (41121) corresponding to the bolt (15). The bolt (15) passes through the through hole (41121) and the axis of the through hole (41121) is eccentrically set with respect to the axis of the mounting sleeve (4112).

9. A double-barrel heat preservation device according to claim 1, characterized in that: The bottom of the cover assembly (5) is recessed inward to form a cavity (521). The bottom of the cavity (521) is provided with a snap-fit ​​post (522) protruding downward. The disc seal (6) is provided with a snap-fit ​​sleeve (61) corresponding to the snap-fit ​​post (522). The snap-fit ​​sleeve (61) is made of elastic polymer material. The snap-fit ​​post (522) and the snap-fit ​​sleeve (61) are inserted and matched, so that the disc seal (6) can be detachably installed at the bottom of the cover assembly (5).

10. A double-barrel heat preservation device according to claim 9, characterized in that: The disc seal (6) has a handle (62) on the side away from the snap sleeve (61). The edge of the disc seal (6) has an annular positioning part (63) vertically facing up and down. The cover assembly (5) has an annular groove (523) corresponding to the annular positioning part (63). The disc seal (6) engages with the annular groove (523) through the annular positioning part (63) on one side. The disc seal (6) is inserted and sealed with the inner liner (16) through the annular positioning part (63) on the other side.

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