Heating disc structure and electric cooker

Abstract

The utility model discloses a heating disc structure and an electric cooker, and relates to the technical field of life electric appliances, and the heating disc structure comprises a heating disc, an electric heating pipe and a water guide pipe; the electric heating tube is embedded in the heating disc; the water guide pipe is embedded in the heating disc, and heat generated by the electric heating pipe can be transmitted to the water guide pipe so that water flowing through the water guide pipe can be heated to generate steam. Compared with the prior art, the technical scheme provided by the utility model has the advantages that the operating power of the heating disc can be set to be higher, the heat provided in unit time is larger, and the cooking time can be greatly shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly relates to a heating plate structure and a rice cooker. Background Art

[0002] Traditional cooking appliances such as rice cookers include a hot plate structure. The hot plate operates to generate heat, and the heat is radiated into the cooking cavity to heat food, ultimately achieving the purpose of cooking the food. Considering the limitation of the hot plate's own material, the maximum power of the hot plate is generally limited. If the power is too large, situations such as melting the plate may occur. Moreover, if the heat conducted to the food through heat transfer at the bottom of the cooking cavity by the hot plate is too concentrated, there will also be a situation where the food is burnt. Therefore, generally, the power of the hot plate is not set too large. Under the condition of limited power, it takes a long time to complete the entire cooking process, and the cooking time is relatively long. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose a heating plate structure and a rice cooker, aiming to improve the heating power that the hot plate can withstand and shorten the cooking time.

[0004] To achieve the above purpose, a heating plate structure proposed by the utility model includes:

[0005] A heating plate;

[0006] An electric heating tube, embedded in the heating plate;

[0007] A water guide pipe, embedded in the heating plate, and the heat generated by the electric heating tube can be transferred to the water guide pipe so that the water flowing through the water guide pipe is heated to generate steam.

[0008] In an embodiment, the distance L between the water guide pipe and the electric heating tube satisfies: L≤20mm.

[0009] In an embodiment, the water guide pipe includes an inlet section, an outlet section, and a steam generation section, and both the inlet section and the outlet section are connected to both ends of the steam generation section through bending sections.

[0010] In an embodiment, defining the pipe diameter of the water guide pipe as D1, then it satisfies: D1≥6mm.

[0011] In an embodiment, defining the diameter of the circle formed by the bending section as D2, then it satisfies: D2 / D1≥1.

[0012] In an embodiment, the steam generation section is annular.

[0013] In an embodiment, the electric heating tube includes a heating section and power-on terminals connected to both ends of the heating section, at least part of the heating section is annular, and the steam generation section is arranged on the periphery of the heating section.

[0014] In one embodiment, the surface of the heating plate facing the food ingredients is a concave surface, and the center lines of the steam generating section and the heating section are located on a reference arc surface, and the bending direction of the reference arc surface is the same as the bending direction of the concave surface of the heating plate.

[0015] In one embodiment, both the inlet section and the outlet section extend along the axial direction of the circle formed by the steam generating section.

[0016] In one embodiment, the power of the electric heating tube is 800W - 2500W.

[0017] In one embodiment, a heat conducting member is further provided in the heating plate, and the heat conducting member covers the electric heating tube and / or the water guiding pipe.

[0018] In one embodiment, the heat conducting member is an aluminum member.

[0019] To achieve the above object, the present invention further provides a rice cooker, including a cooker body and the heating plate structure as described above. The heating plate structure is disposed in the cooker body, and the outlet of the water guiding pipe can be communicated with the inner pot cavity in the cooker body.

[0020] The technical solution of the present invention adds a water guiding pipe in the heating plate, so that the heating plate can operate at a higher power. Part of the heat of the heating plate can be conducted to the food through heat transfer at the bottom of the cooking cavity, and the other part can be transferred to the water in the water guiding pipe. The water is heated to form steam, and the steam is transported to the cooking cavity to heat the food. It is equivalent to that the heat of the heating plate is quickly transferred out through two ways to act on the food. Therefore, even if the operating power of the heating plate is relatively high, there will be no situation of bottom burning or melting of the plate. For the entire cooking appliance, a relatively high heating power can shorten the cooking time to a certain extent.

[0021] In addition, there is no need to design a separate steam generating device, so there is no need to set an additional space in the rice cooker to accommodate the steam generator device, which can effectively reduce the volume of the rice cooker and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0023] Figure 1 Structural schematic diagram of an embodiment of the heating plate structure provided by the present invention;

[0024] Figure 2 The bottom view of an embodiment of the heating plate structure provided by the present utility model;

[0025] Figure 3 The cross-sectional view of an embodiment of the heating plate structure provided by the present utility model;

[0026] Figure 4 The structural schematic diagram of the electric heating tube and the water guide tube in an embodiment of the heating plate structure provided by the present utility model;

[0027] Figure 5 The bottom view of the electric heating tube and the water guide tube in an embodiment of the heating plate structure provided by the present utility model;

[0028] Figure 6 The side view of the water guide tube in an embodiment of the heating plate structure provided by the present utility model.

[0029] Explanation of the attached drawing reference numerals:

[0030] Label Name Label Name 10 Heating plate structure 131 Inlet section 11 Heating plate 132 Outlet section 12 Electric heating tube 133 Steam generation section 121 Heating section 134 Bending section 122 Power-on terminal 14 Heat conducting part 13 Water conduit

[0031] The realization of the purpose, functional characteristics and advantages of the present utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, such descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] Traditional cooking appliances such as rice cookers include a hot plate structure. The hot plate operates to generate heat, and the heat is radiated into the cooking cavity to heat the food, ultimately achieving the purpose of cooking the food. Considering the limitations of the hot plate's own material, the maximum power of the hot plate is generally limited. If the power is too large, situations such as melting the plate may occur. Moreover, if the heat conducted to the food through the bottom heat transfer of the cooking cavity by the hot plate is too concentrated, there will also be a situation where the food is burnt. Therefore, the power of the general hot plate is not set too large. Under the condition of limited power, it takes a relatively long time to complete the entire cooking process, and the cooking time is relatively long.

[0036] Based on the above problems, the present utility model proposes a hot plate structure 10, which can be applied to devices such as rice cookers, air fryers, electric kettles, and electric pressure cookers. In some cases, the hot plate structure 10 is applied to a rice cooker, aiming to increase the heating power that the hot plate can withstand and shorten the cooking time. It can be understood that the rice cooker includes a base, an outer pot, a hot plate structure 10, and an inner pot. The outer pot is disposed on the base, the hot plate structure 10 is disposed inside the outer pot, the inner pot is disposed inside the outer pot, and the hot plate structure 10 is located below the inner pot. When the electric heating tube 12 of the hot plate structure 10 works, the generated heat can, on the one hand, heat and cook the food in the inner pot cavity through the hot plate 11, and on the other hand, it can also be transferred to the water guide pipe 13, so that the water flowing through the water guide pipe 13 is heated to generate steam, and the steam can be introduced into the inner pot cavity through the outlet of the water guide pipe 13. The structure of the present hot plate structure 10 will be described below by way of embodiments.

[0037] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, the hot plate structure 10 includes a hot plate 11, an electric heating tube 12, and a water guide pipe 13; the electric heating tube 12 is embedded in the hot plate 11; the water guide pipe 13 is embedded in the hot plate 11, and the heat generated by the electric heating tube 12 can be transferred to the water guide pipe 13, so that the water flowing through the water guide pipe 13 is heated to generate steam.

[0038] In some cases, such as when the heating plate structure 10 is applied to an electric rice cooker, the outlet of the water conduit 13 can be connected to the inner pot cavity of the electric rice cooker, thereby allowing steam to be transported into the inner pot cavity.

[0039] It is understandable that the heating plate 11 can be a disc-shaped structure, with a cavity formed inside, which is used to install other structures such as the electric heating pipe 12 and the water pipe 13. In order to ensure the structural strength, high temperature resistance and thermal conductivity of the heating plate 11, the heating plate 11 can be made of sheet metal. In practical applications, the heating plate 11 can be an integrally formed structure, or it can be a split structure divided into two, three or more structural parts. When the heating plate 11 is an integrally formed structure, the electric heating pipe 12 and the water pipe 13 can be formed in the heating plate 11 in an integrally formed manner. For example, the molten material used to form the heating plate 11 flows around the electric heating pipe 12 and the water pipe 13, and after cooling, the electric heating pipe 12 and the water pipe 13 can be embedded in the heating plate 11. Of course, in order to facilitate the installation of other structures such as the electric heating pipe 12 and the water pipe 13, the heating plate 11 can preferably be divided into two split structures that cover each other.

[0040] In actual application, the electric heating tube 12 can be completely embedded in the interior of the heating disk 11, or the heating part of the electric heating tube 12 can be embedded in the interior of the heating disk 11, and the power-on terminal 122 of the electric heating tube 12 can be extended outside the heating disk 11, so as to facilitate the connection between the power-on terminal 122 and the power-on structure. In addition, the water pipe 13 can be completely embedded in the interior of the heating disk 11, or the steam-generating part of the water pipe 13 can be embedded in the interior of the heating disk 11, and the inlet and outlet ends of the water pipe 13 can be extended outside the heating disk 11, so as to facilitate the connection between the inlet and outlet ends and the transfer pipe. The steam-generating part of the water pipe 13 mentioned here refers to the pipe section in the water pipe 13 that can receive the heat transferred from the heating disk 11 when the electric heating tube 12 is working, and the water flowing through this part can be heated to form steam.

[0041] In this embodiment, when the heating plate structure 10 is applied to an electric rice cooker, a first through hole and a second through hole can be opened on the outer pot of the electric rice cooker, wherein the power terminal 122 of the electric heating tube 12 can extend out of the outer pot through the first through hole to facilitate the connection between the power terminal 122 and the power structure; the inlet and outlet ends of the water pipe 13 (including the inlet section 131 and the outlet section 132) can extend out of the outer pot through the second through hole, so that it is not only convenient to achieve the connection between the inlet and outlet ends and the transfer pipe, but also it can avoid the water in the water pipe 13 from being sprayed into the gap between the heating plate 11 and the outer pot to cause a short circuit after the transfer pipe connected to the inlet and outlet ends is disconnected and fails, and it can also avoid the transfer pipe being too close to the outer pot to cause high-temperature deformation.

[0042] In practical applications, the shape of the electric heating tube 12 can be annular, spiral tubular, straight tubular, wavy tubular, arc tubular, etc.; and the shape of the water guide pipe 13 can also be annular, spiral tubular, straight tubular, wavy tubular, arc tubular, etc. As long as the heat generated by the electric heating tube 12 can be transferred to the water guide pipe 13 so that the water flowing through the water guide pipe 13 is heated to generate steam.

[0043] In summary, the technical solution of the present utility model adds a water guide pipe 13 in the heating plate 11, so that the heating plate 11 can operate at a higher power. A part of the heat of the heating plate 11 can be conducted to the food by heat transfer at the bottom of the cooking cavity, and the other part can be transferred to the water in the water guide pipe 13. The water is heated to form steam, and the steam is transported to the cooking cavity to heat the food. It is equivalent to that the heat of the heating plate 11 is quickly transferred out through two ways to act on the food. Therefore, even if the operating power of the heating plate 11 is relatively high, there will be no situation of bottom burning or melting of the plate. For the entire cooking appliance, a relatively high heating power can shorten the cooking time to a certain extent.

[0044] In addition, there is no need to design a separate steam generating device, so there is no need to set extra space in the rice cooker to accommodate the steam generator device, which can effectively reduce the volume of the rice cooker and reduce the cost.

[0045] In some embodiments, the heating plate 11 has a virtual plane passing through its center and perpendicular to the plate surface. This virtual plane divides the heating plate 11 into a first region and a second region. Among them, the energized terminal 122 of the electric heating tube 12 is located in the first region, and the inlet section 131 and the outlet section 132 of the water guide pipe 13 are located in the second region. That is, the first region is the energized region, and the second region is the non-energized region. In this way, the energized terminal 122 of the electric heating tube 12 can be set far away from the inlet section 131 and the outlet section 132 of the water guide pipe 13, and the design of separating water and electricity can be realized to improve the safety protection effect.

[0046] Optionally, the energized terminal 122 of the electric heating tube 12 is arranged at the first end of the first region farthest from the second region, and the inlet section 131 and the outlet section 132 of the water guide pipe 13 are arranged at the second end of the second region farthest from the first region. In this way, the energized terminal 122 of the electric heating tube 12 and the inlet section 131 and the outlet section 132 of the water guide pipe 13 can be distributed at the farthest distance on the heating plate 11 to fully ensure the effect of separating water and electricity.

[0047] Optionally, both the inlet section 131 and the outlet section 132 of the water guide pipe 13 are provided with adapter pipes, and the openings of the adapter pipes do not point to the first region. That is, the openings of the adapter pipes do not point to the energized region. In this way, it can be avoided that after the hose connected to the adapter pipe is detached, water and steam are sprayed onto the first region, resulting in a short circuit.

[0048] Optionally, the opening of the adapter pipe is set horizontally or inclined downward. In this way, it can be ensured that after the hose connected to the adapter pipe is detached, the water is directly sprayed onto the base of the rice cooker instead of the outer pot, which can reduce the risk of short circuit.

[0049] Please refer to Figures 4 to 6 , in an embodiment of the present invention, the water guide pipe 13 includes an inlet section 131, an outlet section 132, and a steam generation section 133. Both the inlet section 131 and the outlet section 132 are connected to both ends of the steam generation section 133 through a bending section 134.

[0050] With such a setting, since the chamber space inside the heating plate 11 is limited, by using the bending section 134 to connect the inlet section 131 and the outlet section 132 to the steam generation section 133, the water guide pipe 13 can better match the chamber inside the heating plate 11. At the same time, the design of the bending section 134 can smoothly lead out the inlet section 131 and the outlet section 132 from the heating plate 11.

[0051] In this embodiment, the inlet section 131, the bending section 134, the steam generation section 133, the bending section 134, and the outlet section 132 are sequentially connected to form the water guide pipe 13.

[0052] In actual application, the adjacent two sections among the inlet section 131, the bending section 134, the steam generation section 133, the bending section 134, and the outlet section 132 can be of an integrally formed structure or a split structure connected later by means such as bonding.

[0053] Among them, in order to ensure that the water flowing through the water guide pipe 13 can form steam in the steam generation section 133, the shape of the steam generation section 133 can be appropriately adjusted to extend the length of the steam generation section 133 so that the water can fully absorb heat. The steam generation section 133 can specifically be annular, wavy, spiral, etc.

[0054] It should be noted that when the pipe diameter of the water guide pipe 13 is too small, the water flowing through the water guide pipe 13 does not have enough space to form steam after being heated, which will affect the effect of generating steam in the water guide pipe 13.

[0055] Based on this, please refer to Figures 4 to 6 , in an embodiment of the present invention, the pipe diameter of the water guide pipe 13 is defined as D1, and by satisfying: D1≥6mm, in this way, it can be ensured that the water flowing through the water guide pipe 13 has enough space to form steam after being heated, which is more conducive to generating steam.

[0056] As some examples, the pipe diameter D1 of the water guide pipe 13 can specifically be 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, etc.

[0057] It should be noted that when the ratio of the diameter of the circle formed by the bent section 134 to the pipe diameter of the water guide pipe 13 is too small, a large loss of steam will occur when the steam flows through the bent section 134, affecting the amount of steam.

[0058] Based on this, please refer to Figure 6 , in an embodiment of the present invention, the diameter of the circle formed by the bent section 134 is defined as D2, and by satisfying: D2 / D1≥1, in this way, it is possible to avoid a large loss of steam when the steam flows through the bent section 134, so as to ensure that a sufficient amount of steam is introduced into the inner pot cavity of the rice cooker.

[0059] As some examples, the ratio D2 / D1 of the diameter of the circle formed by the bent section 134 to the pipe diameter of the water guide pipe 13 can specifically be 1, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 3, and so on.

[0060] Please refer to Figure 4 , Figure 5 , in an embodiment of the present invention, the steam generating section 133 is annular.

[0061] With such a setting, the annular steam generating section 133 can better extend the length of the steam generating section 133, so that the water flowing through the water guide pipe 13 can fully absorb heat, which is more conducive to forming steam in the steam generating section 133.

[0062] In actual application, the steam generating section 133 can be a closed annular structure, that is, the two ends of the steam generating section 133 are in contact; or, the steam generating section 133 can also be an open annular structure, that is, the two ends of the steam generating section 133 are spaced apart.

[0063] In actual application, the water guide pipe 13 can be located outside the electric heating pipe 12, or inside the electric heating pipe 12, or above or below the electric heating pipe 12, as long as the heat generated by the electric heating pipe 12 can be transferred to the water guide pipe 13.

[0064] And, the inlet section 131 and the outlet section 132 can extend along the axial direction of the circle formed by the steam generating section 133, or along the radial direction of the circle formed by the steam generating section 133, or extend in other directions, which are not specifically limited here.

[0065] Please refer to Figure 4 , Figure 5 , in an embodiment of the present invention, the electric heating pipe 12 includes a heating section 121 and power supply terminals 122 connected to both ends of the heating section 121, at least part of the heating section 121 is annular, and the steam generating section 133 is arranged outside the heating section 121.

[0066] With such a setting, by making the heating section 121 of the electric heating tube 12 also annular and arranging the steam generating section 133 on the periphery of the heating section 121, the length of the steam generating section 133 can be made longer, so that the water flowing through the water guide pipe 13 can absorb more heat, which is more conducive to forming steam in the steam generating section 133.

[0067] In practical applications, the heating section 121 can be a closed annular structure, that is, the two ends of the heating section 121 are in contact; or, the heating section 121 can also be an open annular structure, that is, the two ends of the heating section 121 are spaced apart; or, the heating section 121 overlaps in the circumferential direction to form a heating strong area (equivalent to the two ends of the heating section 121 overlapping), and in the radial direction of the heating plate 11, the steam generating section 133 overlaps with the heating strong area. Such a design can enable the heat in the heating strong area to be better received by the liquid in the water guide pipe 13, improving the heat utilization rate. It should be noted that when the heating plate 11 is non-standard circular, the above-mentioned radial direction refers to the direction from the center of the heating plate 11 to the outer edge.

[0068] Moreover, in some embodiments, the surface of the heating plate 11 facing the food is a concave surface, or it can be said that the surface of the heating plate 11 facing the inner container is a concave surface. For such a heating plate 11, when there is less food in the inner container, the thickness of the food near the center position of the heating plate 11 is generally relatively large and requires more heat absorption. Arranging the steam generating section 133 on the outer periphery of the heating section 121 can, to a certain extent, ensure that the heating plate 11 can transfer enough heat to the food near the center position and also ensure that steam can be formed in the steam generating section 133.

[0069] Optionally, the surface of the heating plate 11 facing the food is a concave surface, and the center line of the steam generating section 133 and the center line of the heating section 121 are located on a reference arc surface, and the bending direction of the reference arc surface is the same as the bending direction of the concave surface of the heating plate 11. This can make the distance between the steam generating section 133 and the concave surface closer to the distance between the heating section 121 and the concave surface as much as possible.

[0070] Please refer to Figure 4 , in an embodiment of the present invention, both the inlet section 131 and the outlet section 132 extend along the axial direction of the circle formed by the steam generating section 133.

[0071] With such a setting, both the inlet section 131 and the outlet section 132 can extend along the axial direction of the circle formed by the steam generating section 133, which is more convenient for connecting the inlet section 131 and the outlet section 132 to the external adapter pipe.

[0072] Please refer to Figures 1 to 3, in an embodiment of the present utility model, by setting the power of the electric heating tube 12 to be 800W - 2500W, in this way, it can be ensured that while the electric heating tube 12 can generate sufficient heat, it can also avoid problems such as stopping continuous heating or even melting the pan due to excessive temperature. When the power of the electric heating tube 12 is within this range, it can not only generate sufficient heat, with a part of the heat directly conducted to the food through the heating plate 11 and another part of the heat acting on the food through the steam in the water guide pipe 13, providing more heat to the food per unit time, but also avoid the situation of stopping continuous heating or even melting the pan due to excessive temperature.

[0073] As some examples, the power of the electric heating tube 12 can specifically be 800W, 900W, 1000W, 1100W, 1200W, 1300W, 1400W, 1500W, 1600W, 1700W, 1800W, 1900W, 2000W, 2100W, 2200W, 2300W, 2400W, 2500W, etc.

[0074] It should be noted that when the distance between the water guide pipe 13 and the electric heating tube 12 is too large, the heat transfer efficiency from the electric heating tube 12 to the water guide pipe 13 is low, and it takes a long time for the water guide pipe 13 to generate steam or even it cannot generate steam; in order to improve the heat transfer efficiency, the power of the electric heating tube 12 needs to be increased, but too large a power of the electric heating tube 12 will cause the temperature of the entire heating plate 11 to be too high, and being too high easily reaches the dry - burning protection and stops continuous heating, and even more seriously, it will melt the pan; and in order to avoid the temperature of the heating plate 11 being too high, the thickness of the heating plate 11 needs to be increased to avoid overheating, which will cause the entire heating plate structure 10 to become larger and heavier, increasing the cost. All in all, the distance between this water guide pipe 13 and the electric heating tube 12 will seriously affect the size, weight, power of the heating plate 11, and the quality of the generated steam.

[0075] Based on this, please refer to Figure 3 , in an embodiment of the present utility model, by making the distance L between the water guide pipe 13 and the electric heating tube 12 satisfy L ≤ 20mm, in this way, it can ensure the size, weight, power of the heating plate 11, and the quality of the generated steam. As Figure 3 shown, the distance L here refers to the spacing between the outer peripheral surface of the water guide pipe 13 and the outer peripheral surface of the electric heating tube 12.

[0076] As some examples, the distance L between the water guide pipe 13 and the electric heating tube 12 can specifically be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, etc.

[0077] Please refer to Figure 3, in an embodiment of the present utility model, a heat conducting member 14 is further provided inside the heating plate 11, and the heat conducting member 14 covers the electric heating tube 12 and / or the water guide pipe 13.

[0078] With such a setting, the heat generated by the electric heating tube 12 can be transferred to the water guide pipe 13 through the heat conducting member 14. Compared with the air transfer method, this heat transfer method is more efficient and has less heat loss.

[0079] In actual application, the heat conducting member 14 can cover only the electric heating tube 12, or only the water guide pipe 13, or can cover both the electric heating tube 12 and the water guide pipe 13 at the same time.

[0080] The material of the heat conducting member 14 can be graphene, heat conducting silica gel, aluminum, etc.

[0081] Please refer to Figure 3 , in an embodiment of the present utility model, the heat conducting member 14 is an aluminum member. With such a setting, by selecting aluminum as the heat conducting member 14, not only the heat conducting effect is good, but also the cost is lower. Molten aluminum is filled around the electric heating tube 12 and / or the water guide pipe 13, and after cooling, it forms the heat conducting member 14, which plays a role in heat conduction.

[0082] The present utility model also proposes an electric rice cooker, which includes a cooker body and a heating plate structure 10. The specific structure of the heating plate structure 10 refers to the above-mentioned embodiment. Since this electric rice cooker adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated one by one here.

[0083] Among them, the heating plate structure 10 is arranged in the cooker body, and the outlet of the water guide pipe 13 can be communicated with the inner pot cavity in the cooker body, so that after the water flowing through the water guide pipe is heated to generate steam, it can be introduced into the inner pot cavity through the outlet of the water guide pipe. There is no need to design a separate steam generating device, so there is no need to set an additional space in the electric rice cooker to accommodate the steam generator device, which can effectively reduce the volume of the electric rice cooker and reduce the cost. Compared with the electric heating tube in the traditional heating plate, the electric heating tube 12 of the heating plate 11 in each embodiment of the present application can be set to have a higher operating power. The heat generated by the heating plate 11 acts on the food in two ways, improving the heat obtained by the food per unit time and accelerating the cooking speed and shortening the cooking time.

[0084] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model accordingly. All equivalent structural transformations made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present utility model.

Claims

1. A heating plate structure, characterized in that, Comprising: A heating plate; An electric heating tube, embedded in the heating plate; A water guide pipe, embedded in the heating plate, and the heat generated by the electric heating tube can be transferred to the water guide pipe so that the water flowing through the water guide pipe is heated to generate steam.

2. The heating plate structure according to claim 1, wherein The distance L between the water guide pipe and the electric heating tube satisfies L≤20mm.

3. The heating plate structure according to claim 1, characterized in that, The water guide pipe includes an inlet section, an outlet section and a steam generating section, and both the inlet section and the outlet section are connected to both ends of the steam generating section through bending sections.

4. The heating plate structure according to claim 3, wherein, Defining the pipe diameter of the water guide pipe as D1, then it satisfies: D1≥6mm.

5. The heating plate structure according to claim 4, wherein Defining the diameter of the circle formed by the bending section as D2, then it satisfies: D2 / D1≥1.

6. The heating plate structure according to claim 3, wherein The steam generating section is annular.

7. The heating plate structure according to claim 6, wherein The electric heating tube includes a heating section and energizing terminals connected to both ends of the heating section, at least part of the heating section is annular, and the steam generating section is arranged on the periphery of the heating section.

8. The heating plate structure according to claim 7, wherein, The surface of the heating plate facing the food is a concave surface, the center line of the steam generating section and the center line of the heating section are located on a reference arc surface, and the bending direction of the reference arc surface is the same as the bending direction of the concave surface of the heating plate.

9. The heating plate structure according to claim 6, wherein, Both the inlet section and the outlet section extend along the axis of the circle defined by the steam generating section.

10. The heating plate structure according to any one of claims 1 to 9, characterized in that, The power of the electric heating tube is 800W - 2500W.

11. The heating plate structure according to any one of claims 1 to 9, characterized in that, A heat conducting member is further provided in the heating plate, and the heat conducting member covers the electric heating tube and / or the water guide pipe.

12. The heating plate structure according to claim 11, characterized in that, The heat conducting member is an aluminum member.

13. An electric rice cooker, characterized in that, Comprising a pot body and a heating plate structure according to any one of claims 1 to 12, the heating plate structure is arranged in the pot body, and the outlet of the water guide pipe can communicate with the inner pot cavity in the pot body.

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