Electric stewpot convenient for improving heating efficiency
By designing a thermal boss and a radiation through-hole structure in an electric stew pot, the heating pipe transfers heat to the thermal boss with heat radiation, and then transfers it to the ceramic inner liner with heat conduction, solving the problem of low heat transfer efficiency of existing electric stew pots , achieving more efficient heating and even heating effects of food ingredients.
Patent Information
- Application Number
- CN202323390701.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-13
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-13
AI Technical Summary
The existing electric stew pots have low heat transfer efficiency, resulting in low heating efficiency.
An electric stew pot including a pot body, a heat transfer outer pot and a ceramic inner liner is designed. The heat transfer outer pot bottom molded heat conducting boss is in close contact with the ceramic inner liner. The heating pipe transfers heat to the heat conducting boss through heat radiation. The heat conduction is transferred to the ceramic inner vessel, which avoids two thermal radiation heating and improves the heating efficiency.
It effectively improves the heating efficiency, ensures uniform heating of the ceramic inner liner, increases the uniformity of bubble generation and distribution, and improves the boiling effect.
Smart Images
Figure CN222129898U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of food processing and relates to an electric stew pot which is convenient for improving heating efficiency. Background Art
[0002] An existing electric stew pot includes a pot body, an outer pot and a ceramic liner, wherein a heating tube and a partition are arranged in the outer pot. The partition is located below the ceramic liner, the heating tube is located below the partition, the upper end of the pot body abuts against the upper end of the ceramic liner, and the upper end of the pot body supports the ceramic liner. In order to ensure effective support between the ceramic liner and the upper end of the pot body, there are two methods to achieve this. One is to set an assembly gap between the partition and the ceramic liner, so that the liner with different size tolerances can be effectively supported on the upper end of the pot body. However, at this time, since there is a gap between the partition and the heating tube, during the heat transfer process, the heating tube transfers heat to the partition in the form of thermal radiation, and the partition then transfers heat to the ceramic liner in the form of thermal radiation, and the heating efficiency is low; the other is to set the partition in a floating manner, so that it can ensure direct contact between the partition and the ceramic liner, and also ensure effective support between the ceramic liner and the upper end of the pot body. However, if the partition is set in a floating manner, a floating mechanism needs to be added, and the improvement cost is relatively large. Summary of the invention
[0003] The utility model aims to solve the problems existing in the prior art and proposes an electric stew pot which is convenient for improving the heating efficiency, so as to overcome the defect of low heat transfer efficiency of the prior electric stew pot.
[0004] The utility model is achieved in this way:
[0005] An electric stew pot for improving heating efficiency comprises a pot body, a heat transfer outer pot installed in the pot body and a ceramic inner pot placed in the heat transfer outer pot;
[0006] A heat-conducting boss is formed at the bottom of the heat-transfer outer pot, and the heat-conducting boss is integrally formed with the heat-transfer outer pot. The ceramic inner pot abuts against the heat-conducting boss so that the ceramic inner pot is supported on the bottom of the heat-transfer outer pot. The bottom of the heat-transfer outer pot has a mounting groove with an upward opening, a heating pipe is arranged in the mounting groove, a protective member is arranged above the heating pipe, and a first radiation gap is provided between the heating pipe, the heat-conducting boss and the protective member.
[0007] The heat-conducting boss integrally formed at the bottom of the heat-transfer outer pot has good structural strength and can support the ceramic inner pot. There is no need for the upper end of the pot body to support the ceramic inner pot, so that the ceramic inner pot and the heat-conducting boss can be in full and close contact. The heating pipe transfers heat to the heat-conducting boss by thermal radiation, and the heat-conducting boss then transfers heat to the ceramic inner pot by thermal conduction, thereby heating the ceramic inner pot. The heat transfer rate of thermal conduction is greater than the heat transfer rate of thermal radiation. The heating pipe of this scheme transfers heat to the ceramic inner pot through one thermal radiation and one thermal conduction, which can effectively improve the heating efficiency compared to heating through two thermal radiations. The heat-conducting boss can be stamped and formed once when manufacturing the heat-transfer outer pot, avoiding the need to set up a floating mechanism, thereby improving the heating efficiency at a lower cost. In addition, since the heat-conducting boss is integrally formed at the bottom of the heat-transfer outer pot, the heat on the heat-conducting boss that is not completely absorbed by the ceramic inner pot will also be transferred to other parts of the heat-transfer outer pot, especially the side walls of the heat-transfer outer pot. The side walls of the heat-transfer outer pot can heat the side walls of the ceramic inner pot, making the ceramic inner pot heated more evenly as a whole.
[0008] Preferably, the protective member has radiation holes so that the heating tube can directly radiate heat to the ceramic inner tank. The protective member can prevent the user from directly contacting the heating tube when the ceramic inner tank is taken out, thereby reducing the risk of scalding the user. Part of the heat of the heating tube is first transferred to the protective member in the form of thermal radiation, and then the protective member radiates the heat to the ceramic inner tank. The provision of the radiation holes enables the protective member to protect the heating tube while reducing the obstruction of the protective member to the heat transfer of the heating tube, allowing the heating tube to directly heat the ceramic inner tank through the radiation holes by thermal radiation, thereby avoiding overheating due to local concentration of heat and reducing the risk of cracking the tank under hot and cold shocks.
[0009] Preferably, the first radiation gap includes a first gap between the ceramic liner and the protective member, which can avoid the protective member from being deformed by pressure, reduce the strength requirement of the protective member, and ensure that the heat-conducting boss and the ceramic liner can be in close contact, thereby improving the heat conduction efficiency. In other optional solutions, the ceramic liner is in contact with the protective member.
[0010] Preferably, the bottom of the ceramic liner has an annular support foot, the support foot surrounds the outside of the heat-conducting boss, and the upper surface of the protective member is lower than the upper surface of the heat-conducting boss. The lower position of the protective member can give way to the support foot, the ceramic liner is thicker at the position of the support foot, and the heat-conducting boss avoids the support foot and abuts against the thinner position of the bottom of the ceramic liner, avoiding the heat conduction of the protective member from the support foot position to the ceramic liner, ensuring that the heat-conducting boss can conduct heat to the ceramic liner faster, thereby improving the heating efficiency of the food in the ceramic liner.
[0011] Preferably, the heat-conducting boss and the side wall of the heat-transfer outer pot are provided with assembly holes, and the protective member is provided with assembly feet that are passed through the assembly holes so that the protective member is fixed on the heat-transfer outer pot; before the protective member is assembled, the assembly feet are straight relative to the column of the protective member, and after the assembly feet are inserted into the assembly holes, the ends of the assembly feet are bent so that the assembly feet cannot be separated from the assembly holes, thereby achieving stable installation of the protective member.
[0012] Alternatively, the protective member is fixed to the heat transfer outer pot by screws.
[0013] Preferably, the mounting groove includes a first groove located between the heat-conducting boss and the side wall of the heat transfer outer pot, and / or a second groove located on the heat-conducting boss. When the heating pipe is arranged in the first groove, the heating pipe can heat the middle area of the bottom of the ceramic inner pot through the heat-conducting boss. The heating pipe can also perform thermal radiation heating to the outer area of the bottom of the ceramic inner pot, and at the same time radiate heat to the side wall of the ceramic inner pot, so as to form a more three-dimensional heating effect for the ceramic inner pot and heat it more evenly. Arranging the heating pipe in the second groove can improve the heating efficiency of the heat-conducting boss and improve the heating efficiency.
[0014] Preferably, the protective member includes a first protective plate located at the opening of the first sink and a second protective plate located at the opening of the second sink, and the first protective plate and the second protective plate are integrally formed or independent of each other. The protective member with an integral structure can improve the processing and assembly efficiency of the protective member.
[0015] Preferably, a heat-generating belt is provided on the side wall of the heat transfer outer pot, and a second radiation gap is provided between the side wall of the heat transfer outer pot and the ceramic inner pot. This solution adopts a dual-drive heating method to heat the ceramic inner pot. From the perspective of the heating space position, the ceramic inner pot is heated in three dimensions, thereby avoiding the problem of uneven temperature of the food materials due to the poor thermal conductivity of the ceramic material. After the three-dimensional heating of the ceramic inner pot, the temperature of the food materials is relatively uniform, so that the bubbles generated at the bottom can smoothly rise to the liquid surface, thereby improving the boiling effect. The uniformity of heating is improved, so that the bottom of the ceramic inner pot is heated more evenly, more bubbles are generated and distributed more evenly, and the floating intensity is greater, thereby achieving a better boiling effect.
[0016] Preferably, a fastener is provided between the pot body and the heat transfer outer pot, so that the heat transfer outer pot is locked downwardly on the pot body. In the process of taking out the ceramic inner pot, the heat transfer outer pot is prevented from being taken out, thereby improving the stability of the installation of the heat transfer outer pot.
[0017] Preferably, a support tube is sleeved on the fastener, the upper end of the support tube abuts against the heat-conducting boss, and the lower end of the support tube abuts against the pot body. The support tube supports the heat-conducting boss, and the pressure of the ceramic inner pot on the heat-conducting boss can be transmitted to the bottom of the pot body through the support tube, thereby improving the stability of the heat-conducting boss supporting the ceramic inner pot.
[0018] The utility model provides an electric stew pot which is convenient for improving heating efficiency. The heating tube transfers heat to the heat-conducting boss by means of thermal radiation, and the heat-conducting boss transfers heat to the ceramic inner pot by means of thermal conduction, so that the heating tube is prevented from heating the ceramic inner pot by thermal radiation twice, thereby effectively improving heating efficiency, generating more bubbles, and enhancing boiling effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of an electric stew pot;
[0020] Figure 2 for Figure 1 A magnified view of the part A in the middle;
[0021] Figure 3 A schematic diagram of the top view of the structure after the heat transfer outer pot is installed with the heating pipe and the protective member;
[0022] Figure 4 This is a schematic diagram of the structure from a first angle before the heat transfer outer pot, the heating pipe and the protective element are assembled;
[0023] Figure 5 A second angle structural schematic diagram of the heat transfer outer pot, the heating pipe and the protective element before assembly;
[0024] Figure 6 It is a partial structural schematic diagram of an electric stew pot in other embodiments.
[0025] Explanation of the accompanying drawings: 100, pot body; 200, heat transfer outer pot; 210, heat conduction boss; 220, mounting groove; 221, first sink groove; 222, second sink groove; 230, assembly hole; 240, heat-generating belt; 250, fastener; 260, second radiation gap; 300, ceramic inner liner; 310, supporting foot; 400, heating tube; 410, limiting plate; 420, first radiation gap; 500, protective member; 510, radiation through hole; 520, assembly foot; 530, first gap; 540, first protective plate; 550, second protective plate; 560, second gap. DETAILED DESCRIPTION
[0026] The following will further describe the specific implementation of the utility model in combination with the accompanying drawings of the embodiments, so that the technical solution of the utility model is easier to understand and grasp. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.
[0027] This embodiment provides an electric stew pot, such as Figure 1 As shown in Figure 5, the electric stew pot includes a pot body 100, a heat transfer outer pot 200 installed in the pot body 100, and a ceramic inner pot 300 placed in the heat transfer outer pot 200; a heat transfer boss 210 is formed at the bottom of the heat transfer outer pot 200, and the heat transfer boss 210 abuts against the bottom of the ceramic inner pot 300. The bottom of the heat transfer outer pot 200 has a mounting groove 220 with an opening facing upward, a heating pipe 400 is arranged in the mounting groove 220, a protective member 500 is arranged above the heating pipe 400, and a first radiation gap 420 is provided between the heating pipe 400, the heat transfer boss 210 and the protective member 500.
[0028] The heat-conducting boss 210 integrally formed at the bottom of the heat-transfer outer pot 200 has good structural strength and can support the ceramic inner pot 300. The upper end of the pot body 100 does not need to support the ceramic inner pot 300, so that the ceramic inner pot 300 and the heat-conducting boss 210 can be fully and closely in contact. The heating pipe 400 transfers heat to the heat-conducting boss 210 in the form of thermal radiation, and the heat-conducting boss 210 then transfers heat to the ceramic inner pot 300 in the form of thermal conduction, thereby heating the ceramic inner pot 300. The heat transfer rate of thermal conduction is greater than the heat transfer rate of thermal radiation. The heating pipe 400 of this scheme transfers heat to the ceramic inner pot 300 through one thermal radiation and one thermal conduction, which can effectively improve the heating efficiency compared to heating through two thermal radiations. The heat-conducting boss 210 can be stamped and formed once when manufacturing the heat-transfer outer pot 200, avoiding the setting of a floating mechanism, and improving the heating efficiency at a lower cost.
[0029] like Figure 3 As shown in Figure 5, the protective member 500 has a radiation through hole 510 so that the heating tube 400 can directly radiate heat to the ceramic liner 300. The protective member 500 can prevent the user from directly contacting the heating tube 400 when the ceramic liner 300 is taken out, thereby reducing the risk of scalding the user. Part of the heat of the heating tube 400 is first transferred to the protective member 500 in the form of thermal radiation, and then the protective member 500 transfers the heat to the ceramic liner 300. This heat transfer method causes the protective member 500 to block the heat transfer of the heating tube 400. The radiation through hole 510 can reduce the blocking of the protective member 500 to the heat transfer of the heating tube 400, allowing the heating tube 400 to directly heat the ceramic liner 300 through the radiation through hole 510, thereby improving the heating efficiency. In other optional embodiments, the protective member 500 may also be a component without a radiation through hole 510.
[0030] like Figure 2As shown, there is a first gap 530 between the ceramic liner 300 and the protective member 500, which can prevent the protective member 500 from being deformed by pressure, reduce the strength requirement of the protective member 500, and ensure that the heat-conducting boss 210 and the ceramic liner 300 can be in close contact, thereby improving the heat conduction efficiency. In other optional solutions, the ceramic liner 300 is in contact with the protective member 500.
[0031] like Figure 1 , 2 As shown, the bottom of the ceramic liner 300 has an annular support foot 310, and the support foot 310 surrounds the outer side of the heat-conducting boss 210, and the upper surface of the protective member 500 is lower than the upper surface of the heat-conducting boss 210. The lower position of the protective member 500 can give way to the support foot 310, so as to form a second gap 560 between the support foot 310 and the protective member 500. The ceramic liner 300 has a thicker position at the support foot 310, and the heat-conducting boss 210 avoids the support foot 310 and abuts against the thinner position at the bottom of the ceramic liner 300, so as to avoid the protective member 500 from conducting heat from the support foot 310 position to the ceramic liner 300, ensure that the heat-conducting boss 210 can be in close contact with the ceramic liner 300, ensure that the heat-conducting boss 210 can conduct heat to the ceramic liner 300 faster, and improve the heating efficiency of the food in the ceramic liner 300. In other optional embodiments, the upper surface of the protective member 500 may also be flush with the upper surface of the heat-conducting boss 210 , as long as a clearance groove is provided at a corresponding position of the supporting foot 310 .
[0032] like Figure 2 , 4 As shown in FIG. 5 , the heat-conducting boss 210 and the side wall of the heat-transfer outer pot 200 are provided with an assembly hole 230, and the protective member 500 is provided with an assembly foot 520 which is inserted into the assembly hole 230 so that the protective member 500 is fixed to the heat-transfer outer pot 200; before the protective member 500 is assembled, the assembly foot 520 is straight relative to the column of the protective member 500, and after the assembly foot 520 is inserted into the assembly hole 230, the end of the assembly foot 520 is bent so that the assembly foot 520 cannot be separated from the assembly hole 230, thereby achieving stable installation of the protective member 500. In other optional embodiments, the protective member 500 can also be fixed to the heat-transfer outer pot 200 in a detachable manner such as screws and buckles, or can also be fixed to the heat-transfer outer pot 200 in an irremovable manner such as rivets and welding.
[0033] like Figure 1 , 2As shown, the mounting groove 220 includes a first sink groove 221 located between the heat-conducting boss 210 and the side wall of the heat-transfer outer pot 200 , and the heating pipe 400 is located in the first sink groove 221 . Part of the heat of the heating tube 400 is transferred to the heat-conducting boss 210 by heat radiation, and then transferred to the bottom of the ceramic inner pot 300 by heat conduction from the heat-conducting boss 210, and the middle area of the bottom of the ceramic inner pot 300 can be heated by the heat-conducting boss 210; part of the heat of the heating tube 400 is transferred to the protective member 500 by heat radiation, and then transferred to the peripheral area of the bottom of the ceramic inner pot 300 and the side wall of the ceramic inner pot 300 by heat radiation from the protective member 500; part of the heat of the heating tube 400 is directly heated by heat radiation to the peripheral area of the bottom of the ceramic inner pot 300 and the side wall of the ceramic inner pot 300 through the radiation through hole 510; part of the heat of the heating tube 400 is transferred to the side wall of the heat transfer outer pot 200 by heat radiation, and then transferred to the side wall of the ceramic inner pot 300 by heat radiation from the side wall of the heat transfer outer pot 200. Various heat transfer methods of the heating tube 400 form a more three-dimensional heating effect on the ceramic inner pot 300, and the heating is more uniform.
[0034] like Figure 1 , 2 As shown in , 4, the two ends of the heating tube 400 are fixed on a limit plate 410, and the two ends of the heating tube 400 pass downward through the bottom wall of the first sink 221. The lead wires at both ends of the heating tube 400 are connected to the power board in the pot body 100, and the power board controls the operation of the heating tube 400. The limit plate 410 abuts against the bottom wall of the first sink 221, and the main heating part of the heating tube 400 is suspended. In other optional embodiments, the main heating part of the heating tube 400 can also be supported by a support member.
[0035] In other optional embodiments, the mounting groove 220 may also include a second groove 222 located on the heat-conducting boss 210. The heat pipe 400 is arranged in the second groove 222 to improve the heat receiving efficiency of the heat-conducting boss 210 and improve the heating efficiency. The mounting groove 220 of this embodiment only includes the first groove 221. In other optional embodiments, the mounting groove 220 may also include only the second groove 222, or include both the first groove 221 and the second groove 222.
[0036] like Figure 6 As shown, in the embodiment where the mounting groove 220 includes both the first sink groove 221 and the second sink groove 222, the protective member 500 includes a first protective plate 540 located at the opening of the first sink groove 221 and a second protective plate 550 located at the opening of the second sink groove 222. The first protective plate 540 and the second protective plate 550 are integrally formed or independent of each other. The protective member 500 with an integral structure can improve the processing and assembly efficiency of the protective member 500.
[0037] like Figure 1 , 2 As shown, a heat-generating belt 240 is provided on the side wall of the heat transfer outer pot 200, and a second radiation gap 260 is provided between the side wall of the heat transfer outer pot 200 and the ceramic inner pot 300. This solution adopts a dual-drive heating method to heat the ceramic inner pot 300. From the perspective of the heating space position, the ceramic inner pot 300 is heated in three dimensions, thereby avoiding the problem of uneven temperature of the food materials due to the poor thermal conductivity of the ceramic material. After the ceramic inner pot 300 is heated in three dimensions, the temperature of the food materials is relatively uniform, so that the bubbles generated at the bottom can smoothly rise to the liquid surface, thereby improving the boiling effect. The uniformity of heating is improved, so that the bottom of the ceramic inner pot 300 is heated more evenly, more bubbles are generated and distributed more evenly, and the floating intensity is greater, thereby achieving a better boiling effect.
[0038] like Figure 1 As shown, there is a fastener 250 between the pot body 100 and the heat transfer outer pot 200, so that the heat transfer outer pot 200 is locked downward on the pot body 100. In the process of taking out the ceramic inner pot 300, the heat transfer outer pot 200 is prevented from being taken out, and the stability of the installation of the heat transfer outer pot 200 is improved. The fastener 250 is a screw, and the heat transfer outer pot 200 is provided with a recessed groove in the middle of the heat transfer boss 210, and the nut of the screw is embedded in the recessed groove to prevent the nut from interfering with the close contact between the heat transfer boss 210 and the ceramic inner pot 300. A nut is provided at the bottom of the pot body 100, and the screw and the nut cooperate to lock the heat transfer outer pot 200 on the pot body 100.
[0039] In addition, a support tube is sleeved on the fastener 250, the upper end of the support tube abuts against the heat-conducting boss 210, and the lower end of the support tube abuts against the pot body 100. The support tube supports the heat-conducting boss 210, and the pressure of the ceramic liner 300 on the heat-conducting boss 210 can be transmitted to the bottom of the pot body 100 through the support tube, thereby improving the stability of the heat-conducting boss 210 supporting the ceramic liner 300.
[0040] In the description of the present invention, it should be understood that the terms "center", "lateral", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.
[0042] Those skilled in the art should understand that although the implementation methods disclosed in the embodiments of the present invention are as above, the contents described are only implementation methods adopted to facilitate understanding of the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Any technician in the field to which the embodiments of the present invention belong may make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the embodiments of the present invention, but the scope of patent protection of the embodiments of the present invention shall still be subject to the scope defined in the attached claims.
Claims
1. An electric stew pot for improving heating efficiency, comprising a pot body, a heat transfer outer pot installed in the pot body, and a ceramic inner pot placed in the heat transfer outer pot; Features A heat-conducting boss is formed at the bottom of the heat-transfer outer pot, and the heat-conducting boss is integrally formed with the heat-transfer outer pot. The ceramic inner pot abuts against the heat-conducting boss so that the ceramic inner pot is supported on the bottom of the heat-transfer outer pot. The bottom of the heat-transfer outer pot has a mounting groove with an upward opening, a heating pipe is arranged in the mounting groove, a protective member is arranged above the heating pipe, and a first radiation gap is provided between the heating pipe, the heat-conducting boss and the protective member.
2. The electric stew pot for improving heating efficiency according to claim 1, characterized in that: The protective member is provided with a radiation through hole so that the heating pipe can directly radiate heat to the ceramic inner container.
3. The electric stew pot for improving heating efficiency according to claim 1, characterized in that: The first radiation gap includes a first gap between the ceramic liner and the protective member, or the ceramic liner is in contact with the protective member.
4. The electric stew pot for improving heating efficiency according to claim 1, characterized in that: The bottom of the ceramic liner is provided with an annular supporting foot, and the supporting foot surrounds the outer side of the heat-conducting boss, and the upper surface of the protective element is lower than the upper surface of the heat-conducting boss.
5. The electric stew pot for improving heating efficiency according to claim 1, characterized in that: The heat-conducting boss and the side wall of the heat-conducting outer pot are provided with assembly holes, and the protective member is provided with assembly feet which penetrate through the assembly holes so as to fix the protective member on the heat-conducting outer pot; Alternatively, the protective member is fixed to the heat transfer outer pot by screws.
6. The electric stew pot for improving heating efficiency according to claim 1, characterized in that: The mounting groove includes a first sink groove located between the heat-conducting boss and the side wall of the heat-transfer outer pot, and / or a second sink groove located on the heat-conducting boss.
7. The electric stew pot for improving heating efficiency according to claim 6, characterized in that: The protective member includes a first protective plate located at the opening of the first sink groove and a second protective plate located at the opening of the second sink groove. The first protective plate and the second protective plate are integrally formed or independent of each other.
8. The electric stew pot for improving heating efficiency according to any one of claims 1 to 7, characterized in that: A heat-generating belt is arranged on the side wall of the heat-transfer outer pot, and a second radiation gap is provided between the side wall of the heat-transfer outer pot and the ceramic inner pot.
9. The electric stew pot for improving heating efficiency according to any one of claims 1 to 7, characterized in that: A fastener is provided between the pot body and the heat transfer outer pot so that the heat transfer outer pot is locked downwardly on the pot body.
10. The electric stew pot for improving heating efficiency according to claim 9, characterized in that: A support tube is sleeved on the fastener, the upper end of the support tube abuts against the heat-conducting boss, and the lower end of the support tube abuts against the pot body.