Electric chafing dish

Abstract

The electric chafing dish comprises a dish body and a heating device used for heating the dish body, and the center of the dish body is provided with a heat transfer table with an opening in the bottom. The heating device comprises a heating disc and a heating boss, the heating disc is matched with the bottom wall of the pot body for heat transfer, the heating boss extends into the heat transfer table from the bottom opening so as to be matched with the heat transfer table for heat transfer, the heating disc is provided with at least one first heating pipe, and the heating boss is provided with at least one second heating pipe. According to the electric cooker, three-dimensional heating can be achieved through the heating disc and the heating boss, the heating efficiency can be improved, the more uniform heating effect can be provided, and the situation that food is heated unevenly due to local overheating in the cooking process is avoided.

Description

Technical Field

[0001] This application belongs to the technical field of cooking appliances, and particularly relates to an electric hot pot. Background Art

[0002] For the cooking of hot pots, a variety of ingredients are immersed in the soup. In addition to enjoying the diversity of foods, at least one partition can be provided to separate multiple cooking chambers, and different bottom soups are placed in different cooking chambers for users to enjoy different hot pot flavors. Currently, the basic heating method of electric hot pots is to heat the pot body from the bottom, and the bottom heating is mainly based on heat conduction, with low heating efficiency. Especially for electric hot pots whose pot body is separated from the base with a heating device for easy cleaning, the heat conduction efficiency between the pot body and the heating device is further reduced. As the usage time prolongs, when local deformation occurs to the heating device and / or the pot body due to local heating problems at the contact position between the heating device and the pot body, the contact area between the two is further reduced, and the heating efficiency is even lower.

[0003] In addition, for some meat ingredients, the meat generally has not been blanched or soaked in water to remove blood before being put into the hot pot. Therefore, during the cooking and stewing of meat in the hot pot, the blood vessels, fascia, and fat remaining on the meat will produce blood foam when heated. If the hot pot simply uses the bottom heating method, the part of the bottom wall of the pot body corresponding to the heating device will boil first during the heating process, and the soup will surge and roll, causing the blood foam to disperse and adhere to the side wall of the pot body and the partition. This not only affects the user's eating, but also compared with the blood foam adhering to the side walls around the pot body, the area occupied by the partition is relatively small compared to the peripheral areas such as the side walls around the pot body. When the user scoops and skims off the blood foam on the partition, the rotation angle of the wrist increases, increasing the burden on the wrist and reducing the user experience. Summary of the Utility Model

[0004] This application provides an electric hot pot to solve the technical problem of low heating efficiency of electric hot pots in the prior art.

[0005] The technical solution adopted in this application is as follows:

[0006] An electric hot pot includes a pot body and a heating device for heating the pot body. The center of the pot body has a heat transfer platform with a bottom opening. The heating device includes a heating plate that cooperates with the bottom wall of the pot body for heat transfer, and a heating boss that extends into the heat transfer platform through the bottom opening to cooperate with the heat transfer platform for heat transfer. The heating plate is provided with at least one first heating tube, and the heating boss is provided with at least one second heating tube.

[0007] The electric hot pot in this application further includes the following additional technical features:

[0008] The second heating tube is located above the heating boss.

[0009] The heating boss includes a heat transfer wall that cooperates with the side wall of the heat transfer table, and a top wall provided at the top of the heat transfer wall; the second heating tube is provided at the connection between the heat transfer wall and the top wall, or the second heating tube is provided on the top wall and is adjacent to the outer peripheral edge of the top wall.

[0010] The projection of the second heating tube towards the heating plate is located inside the first heating tube.

[0011] The heating device further includes a heating transition part connecting the heating plate and the heating boss, and the heating transition part cooperates for heat transfer at the connection position between the bottom wall of the pot body and the heat transfer table.

[0012] The shape of the heating transition part matches the shape at the connection position between the bottom wall of the pot body and the heat transfer table.

[0013] The height H1 of the heating boss and the height H2 of the heat transfer table satisfy: H1≥1 / 2H2.

[0014] The first heating tube and the second heating tube are connected in series with each other; or, the first heating tube and the second heating tube are connected in parallel with each other.

[0015] The heating plate and the heating boss are integrally and fixedly connected.

[0016] The electric hot pot further includes a base, the heating device is provided on the base, and the pot body can be taken on and off from the base.

[0017] Due to the adoption of the above technical solutions, the beneficial effects obtained by this application are:

[0018] 1. In the present application, a heat transfer platform is provided in the center of the pot body. The presence of the heat transfer platform provides the possibility for the functional expansion of the electric hot pot in this application. For example, the electric hot pot not only has the function of stewing, but also can realize the functions of frying and grilling on the heat transfer platform, thus achieving multiple functions in one machine. The heating device in this application includes a heating plate that cooperates with the bottom wall of the pot body for heat transfer and a heating boss that cooperates with the heat transfer platform for heat transfer. Compared with the simple bottom heating in the prior art, this application can achieve three-dimensional heating through the heating plate and the heating boss, which not only helps to improve the heating efficiency, but also can provide a more uniform heating effect, avoiding uneven heating such as local overheating of food during cooking. In addition, during the operation of the heating device in this application, the part of the pot body corresponding to the bottom wall of the pot body boils, and the bubbles diffuse upward from the bottom of the pot body. The part of the pot body corresponding to the heat transfer platform also boils due to the action of the heating boss, and the bubbles diffuse from the heat transfer platform to the surrounding. As a result, the blood foam in the pot body can gather towards the circumferential side wall of the pot body under the action of the bubbles and the tumbling soup. When cleaning the blood foam on the circumferential side wall, the user can take the elbow as the center and rotate the wrist with a relatively small amplitude, and can relatively easily fish out the blood foam, improving the user experience.

[0019] 2. As a preferred embodiment of the present application, the second heating tube on the heating boss is located in the upper part of the heating boss, so as to increase the vertical distance between the first heating tube and the second heating tube. Part of the heat generated by the first heating tube is conducted upward along the heating plate and the heating boss, and part of the heat generated by the second heating tube is conducted downward along the heating boss, so that the heat transfer platform is heated more evenly, avoiding the problems of too fast local temperature rise and too high temperature, and improving the cooking effect of food.

[0020] Furthermore, using the principle of hot air rising, the second heating tube is arranged at the connection of the heat transfer wall and the top wall, or the second heating tube is arranged on the top wall and adjacent to the outer peripheral edge of the top wall, so that the heat generated by the second heating tube can be transmitted upward. Since the second heating tube is arranged on the outer periphery of the heating boss, the rising hot air can rise along the periphery of the heating boss and promote the air flow in the area above the heating boss, thus forming a convection, driving the air circulation in the area above the heating boss, and improving the heat equalization effect at the top of the heat transfer platform, which is especially suitable for evenly frying and grilling food at the heat transfer platform.

[0021] 3. As a preferred embodiment of the present application, the projection of the second heating tube towards the heating plate is located inside the first heating tube, which helps to reduce the ineffective heat conduction of the first heating tube, reduce the waste of heat, and improve the energy use efficiency. Moreover, the relative position relationship between the first heating tube and the second heating tube in this embodiment helps to form a relatively stable heat gradient from the center to the edge on the pot body, thus facilitating the achievement of a more uniform heating effect.

[0022] 4. As a preferred embodiment of the present application, the heating plate and the heating boss are connected by a heating transition part. During the operation of the heating device, part of the heat generated by the heating plate is transferred upward through the heating transition part, and part of the heat generated by the heating boss is transferred downward through the heating transition part, so that the heating transition part can be quickly heated, which helps to achieve the heat equalization effect between the heating plate and the heating boss in a short time. The connection positions between the heating transition part and the bottom wall of the pot body and the heat transfer boss cooperate for heat transfer, so that the connection positions can be quickly heated, the heating uniformity of the inner area of the pot can be improved, and the cooking effect of the food can be improved.

[0023] 5. As a preferred embodiment of the present application, the height H1 of the heating boss and the height H2 of the heat transfer boss satisfy: H1≥1 / 2H2. With such a setting, the matching area between the heating boss and the heat transfer boss can be increased, thereby further improving the heat transfer efficiency. Description of the Drawings

[0024] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0025] Figure 1 is a cross-sectional view of an electric hot pot under an embodiment of the present application;

[0026] Figure 2 is a perspective view of the base under an embodiment of the present application;

[0027] Figure 3 is a cross-sectional view of the base under an embodiment of the present application.

[0028] Among them,

[0029] 1. Pot body; 11. Heat transfer boss; 111. Top wall; 12. Bottom wall; 13. Cooking cavity;

[0030] 2. Heating device; 21. Heating plate; 211. First heating tube; 22. Heating boss; 221. Second heating tube; 222. Heat transfer wall; 223. Top wall; 23. Heating transition part;

[0031] 3. Slow heating cavity;

[0032] 4. Base. Detailed Embodiments

[0033] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail by way of examples in conjunction with the drawings of the specification.

[0034] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application may be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that, without conflict, the embodiments of the present application and the features in each embodiment may be combined with each other.

[0035] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0036] In the present application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside 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 application can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0038] As Figure 1 shown, an electric hot pot includes a pot body 1 and a heating device 2 for heating the pot body 1. The center of the pot body 1 has a heat transfer table 11 with an opening at the bottom. The heating device 2 includes a heating plate 21 that cooperates with the bottom wall 12 of the pot body 1 for heat transfer, and a heating boss 22 that extends into the heat transfer table 11 through the bottom opening to cooperate with the heat transfer table 11 for heat transfer. The heating plate 21 is provided with at least one first heating tube 211, and the heating boss 22 is provided with at least one second heating tube 221.

[0039] AsFigure 1 As shown, the pot body 1 in the present application refers to the part of the electric hot pot that has a cooking cavity 13 and a cooking area. The pot body 1 can cooperate with its own bottom wall 12, side wall, and heat transfer platform 11 to enclose the cooking cavity 13. In some functional expansions, the heat transfer platform 11 can also be used as a grilling area. The heat transfer platform 11 is provided in the center of the pot body 1 and extends upward. The bottom of the heat transfer platform 11 has a bottom opening for the heat generating boss 22 to extend into.

[0040] In the present application, the heat transfer platform 11 is provided in the center of the pot body 1. The presence of the heat transfer platform 11 provides the possibility for the functional expansion of the electric hot pot in the present application. For example, the electric hot pot not only has the function of stewing, but also can realize the grilling function on the heat transfer platform 11, thus realizing the multi - function of one machine. The heating device 2 in the present application includes a heating plate 21 that cooperates with the bottom wall 12 of the pot body 1 for heat transfer and a heat generating boss 22 that cooperates with the heat transfer platform 11 for heat transfer. Compared with the simple bottom heating in the prior art, the present application can realize three - dimensional heating through the heating plate 21 and the heat generating boss 22, which not only helps to improve the heating efficiency, but also can provide a more uniform heating effect, avoiding the situation of uneven heating such as local overheating of food during cooking. In addition, during the operation of the heating device 2 in the present application, the part of the pot body 1 corresponding to the bottom wall 12 of the pot body 1 boils, and the bubbles diffuse upward from the bottom of the pot body 1. The part of the pot body 1 corresponding to the heat transfer platform 11 also boils due to the action of the heat generating boss 22, and the bubbles diffuse from the heat transfer platform 11 to the surrounding, so that the blood foam in the pot body 1 can gather towards the circumferential side wall of the pot body 1 under the action of the bubbles and the tumbling soup. When cleaning the blood foam on the circumferential side wall, the user can use the elbow as the center and make a relatively small rotation of the wrist, and can relatively easily fish out the blood foam, improving the user experience.

[0041] The "cooperate for heat transfer" in the present application should be understood in a broad sense. Preferably, the heating plate 21 and the bottom wall 12 of the pot body 1 are in mutual contact to achieve contact heat transfer; and / or, the heat generating boss 22 and the heat transfer platform 11 are in mutual contact to achieve contact heat transfer. However, due to processing errors, assembly errors, and deformation of the pot body 1 during actual use, there may be slight gaps between some areas of the heating plate 21 and the bottom wall 12 of the pot body 1, and between some areas of the heat generating boss 22 and the heat transfer platform 11. In this case, due to the inability to fit, heat radiation heating is achieved through the micro - circulation of hot air in the gaps.

[0042] The present application does not limit the setting position of the second heating tube 221 on the heat generating boss 22. The second heating tube 221 can be wound around the lower part of the heat generating boss 22, wound around the middle part of the heat generating boss 22, or helically wound around the heat generating boss 22 in the up - down direction.

[0043] As a preferred embodiment of the present application, the second heating tube 221 is located above the heating boss 22. With such an arrangement, the vertical distance between the first heating tube 211 and the second heating tube 221 can be increased. Part of the heat generated by the first heating tube 211 is conducted upward along the heating plate 21 and the heating boss 22, and part of the heat generated by the second heating tube 221 is conducted downward along the heating boss 22, so that the heat reception of the heat transfer table 11 is more uniform, avoiding the problems of too rapid local temperature rise and too high temperature, and improving the cooking effect of food.

[0044] Of course, the present embodiment does not limit the arrangement of the second heating tube 221 above the heating boss 22. In one embodiment, the second heating tube 221 surrounds the heating boss 22 in a circumferential direction. In another embodiment, the second heating tube 221 is provided on the top wall 223 of the heating boss 22 and extends in a meandering manner.

[0045] The heating boss 22 includes a heat transfer wall 222 that cooperates with the side wall of the heat transfer table 11, and a top wall 223 provided at the top of the heat transfer wall 222. As a preferred embodiment under the present embodiment, as Figure 1 shown, using the principle of hot air rising, the second heating tube 221 is provided at the connection between the heat transfer wall 222 and the top wall 223, or the second heating tube 221 is provided on the top wall 223 and adjacent to the outer peripheral edge of the top wall 223, so that the heat generated by the second heating tube 221 can be transferred upward. Since the second heating tube 221 is provided on the outer periphery of the heating boss 22, the rising hot air can rise along the periphery of the heating boss 22 and promote the air flow in the area above the heating boss 22, thereby forming a convection, driving the air circulation in the area above the heating boss 22, and improving the heat equalization effect at the top of the heat transfer table 11, which is particularly suitable for uniformly grilling food at the heat transfer table 11.

[0046] As a preferred embodiment of the present application, as Figure 2 and Figure 3 shown, the projection of the second heating tube 221 towards the heating plate 21 is located inside the first heating tube 211, which helps to reduce the ineffective heat conduction of the first heating tube 211, reduce the waste of heat, and improve the energy use efficiency. Moreover, the relative positional relationship between the first heating tube 211 and the second heating tube 221 in the present embodiment helps to form a relatively stable heat gradient from the center to the edge on the pot body 1, thereby facilitating a more uniform heating effect.

[0047] As a preferred embodiment of the present application, as Figure 2 and Figure 3As shown, the heating device 2 further includes a heating transition part 23 connecting the heating plate 21 and the heating boss 22. The heating transition part 23 cooperates with the connection position between the bottom wall 12 of the pot body 1 and the heat transfer table 11 for heat transfer. The heating plate 21 and the heating boss 22 are connected by the heating transition part 23. During the operation of the heating device 2, part of the heat generated by the heating plate 21 is transferred upward through the heating transition part 23, and part of the heat generated by the heating boss 22 is transferred downward through the heating transition part 23, so as to form a heat exchange area at the heating transition part 23, enabling the heating transition part 23 to be heated quickly, which helps to achieve the uniform heating effect of the heating plate 21 and the heating boss 22 in a short time. And the heating transition part 23 cooperates with the connection position between the bottom wall 12 of the pot body 1 and the heat transfer boss for heat transfer, so that the connection position can be quickly heated, improving the heating uniformity of the area inside the pot and the cooking effect of the food.

[0048] Furthermore, as Figure 1 shown, the shape of the heating transition part 23 matches the shape of the connection position between the bottom wall 12 of the pot body 1 and the heat transfer table 11. With such a setting, the heating transition part 23 can be made to be as close to or even fit the connection position between the bottom wall 12 of the pot body 1 and the heat transfer table 11 as possible, achieving the heating of the connection position and avoiding the generation of a low-temperature area in the area inside the pot body 1 opposite to the connection position. Thus, it is beneficial to form a better heat gradient inside the pot body 1 and improve the cooking effect on the food ingredients.

[0049] As a preferred implementation mode of the present application, the height H1 of the heating boss 22 and the height H2 of the heat transfer table 11 satisfy: H1≥1 / 2H2. With such a setting, the cooperation area between the heating boss 22 and the heat transfer table 11 can be increased, thereby further improving the heat transfer efficiency.

[0050] Furthermore, the height H1 of the heating boss 22 and the height H2 of the heat transfer table 11 satisfy: 1 / 2H2≤H1≤3 / 4H2. With such a setting, a slow-heating cavity 3 can be formed between the top wall 223 of the heating boss 22 and the top wall 111 of the heat transfer table 11. The area opposite to the slow-heating cavity 3 is for heat radiation heat transfer. Compared with the implementation mode where the top wall 223 of the heating boss 22 is in contact with the top wall 111 of the heat transfer table 11 for heat transfer, this implementation mode can make the food heated more evenly, improve the temperature uniformity, avoid the food adhered to the corresponding position of the heat transfer table 11 from being burnt, and moreover, in the frying and roasting mode, it can avoid the upper area of the heat transfer table 11 from having too high a temperature, resulting in the food quickly dehydrating, caramelizing and solidifying, causing the phenomenon that the surface of the food ingredient is already burnt but the inside is undercooked.

[0051] The present application does not limit the electrical connection mode of the first heating tube 211 and the second heating tube 221, and it can adopt any one of the following implementation modes:

[0052] Embodiment 1: The first heating tube 211 and the second heating tube 221 are connected in series with each other. When the heating device 2 is operating, the electric hot pot works at the first heating power, thereby realizing the high-power cooking mode.

[0053] Embodiment 2: The first heating tube 211 and the second heating tube 221 are connected in parallel with each other. When the first heating tube 211 is operating, the electric hot pot works at the second heating power. When the second heating tube 221 is operating, the electric hot pot works at the third power. When the first heating tube 211 and the second heating tube 221 are operating simultaneously, the electric hot pot works at the fourth heating power. This Embodiment 2 can achieve multi-power cooking, so that it can be applicable to different cooking modes or select different cooking powers in the same cooking mode to meet the diverse needs of users and improve the applicability of the electric hot pot.

[0054] In one embodiment, the heating plate 21 and the heating boss 22 are integrally formed. In another embodiment, the heating plate 21 and the heating boss 22 are integrally fixed. On the one hand, it can save the increase of the assembly process after integral forming. On the other hand, it helps the connection position between the heating plate 21 and the heating boss 22 to have the same heat conduction coefficient and improve the heat uniformity performance.

[0055] As Figure 1 shown, the electric hot pot further includes a base 4, and the heating device 2 is arranged on the base 4. In one embodiment, the pot body 1 is fixedly connected to the base 4, that is, the pot body 1 and the base 4 are inseparable. In another embodiment, the pot body 1 can be taken on and off from the base 4, so that when the pot body 1 needs to be cleaned, the pot body 1 can be taken off from the base 4 for convenient cleaning operation. For the electric hot pot with the pot body 1 and the base 4 being separately arranged, the cooperation between the heat transfer platform 11 and the heating boss 22 can also limit the pot body 1 in the radial direction, avoiding the pot body 1 from shifting when placed on the base 4, so as to ensure that a proper position matching relationship is maintained between the pot body 1 and the heating device 2, so that during the operation of the heating device 2, a preset heat distribution is maintained among different regions of the pot body 1 to ensure the cooking effect.

[0056] What is not described in this application can be realized by adopting or referring to the existing technology.

[0057] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key points of each embodiment are the differences from other embodiments.

[0058] The above are only the embodiments of this application and are not used to limit this application. For those skilled in the art, various changes and modifications can be made to this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims

1. An electric hot pot, comprising a pot body and a heating device for heating the pot body, characterized in that, The center of the pot body has a heat transfer table with an opening at the bottom. The heating device includes a heating plate that cooperates with the bottom wall of the pot body for heat transfer, and a heating boss that extends into the heat transfer table through the bottom opening to cooperate with the heat transfer table for heat transfer. The heating plate is provided with at least one first heating tube, and the heating boss is provided with at least one second heating tube.

2. The electric hot pot according to claim 1, wherein the second heating tube is located in the upper part of the heating boss.

3. The electric hot pot according to claim 2, wherein the heating boss includes a heat transfer wall that cooperates with the side wall of the heat transfer table, and a top wall provided at the top of the heat transfer wall; the second heating tube is provided at the connection between the heat transfer wall and the top wall, or the second heating tube is provided on the top wall and is adjacent to the outer peripheral edge of the top wall.

4. The electric hot pot according to claim 1, wherein the projection of the second heating tube towards the heating plate is located inside the first heating tube.

5. The electric hot pot according to claim 1, wherein the heating device further includes a heating transition part that connects the heating plate and the heating boss, and the heating transition part cooperates with the connection position between the bottom wall of the pot body and the heat transfer table for heat transfer.

6. The electric hot pot according to claim 5, wherein the shape of the heating transition part matches the shape of the connection position between the bottom wall of the pot body and the heat transfer table.

7. The electric hot pot according to claim 1, wherein the height H1 of the heating boss and the height H2 of the heat transfer table satisfy: H1≥1 / 2H2.

8. The electric hot pot according to any one of claims 1 to 7, wherein the first heating tube and the second heating tube are connected in series with each other; or the first heating tube and the second heating tube are connected in parallel with each other.

9. The electric hot pot according to any one of claims 1 to 7, wherein the heating plate and the heating boss are integrally and fixedly connected.

10. The electric hot pot according to any one of claims 1 to 7, wherein the electric hot pot further includes a base, the heating device is provided on the base, and the pot body can be taken and placed from the base.

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