Waterproof electric stewpot

Abstract

The utility model provides a waterproof electric stewpot, comprising: a pot body comprising a water container, a shell and a base, the water container is internally provided with a water containing cavity, the water container is provided with a container side wall and a container bottom wall, and the container bottom wall is provided with a peripheral edge area close to the container side wall; the stewing cup is located in the water containing cavity; the PTC heating piece is used for directly heating water in the water containing cavity, and the PTC heating piece is arranged in the peripheral edge area and is close to the rear side of the shell; and the operation panel is arranged on the shell and is close to the front side of the shell. According to the technical scheme, the PTC heating piece is arranged on the peripheral edge of the bottom wall of the container. The waterproof electric stewpot has the advantages of being low in noise and suitable for a long-time cooking scene.

Description

Technical Field

[0001] The present application belongs to the technical field of kitchen appliances, and in particular relates to a water-proof electric stew pot. Background Art

[0002] At present, electric stew pots are mainly used to make soups, porridges, complementary foods, etc., and users mostly use them at night, which can not only meet the needs of long-term stewing but also make full use of leisure time without taking up precious working time, so as to reduce waiting and get delicious and nutritious food the next morning. However, nighttime is people's rest time, and existing electric stew pots make gurgling noises during operation, which affects people's sleep and has a poor user experience.

[0003] For example, Chinese patent CN202060584U discloses a low-noise water-proof electric stew pot. By arranging the heating element at the bottom of the water container, and the heating element is located on the edge and / or outside of the stew pot's positive projection on the bracket, the noise pollution of the water-proof stew pot is reduced, making it suitable for nighttime use. However, the heating element of the above scheme is an annular heating element, such as an annular electric heating coil or an annular electric heating tube. The cost of using the above heating element is relatively high, which is not suitable for the current market pricing of products, and is prone to the risk of dry heating. Because the electric heating coil and the electric heating tube are ordinary resistive heating elements, there is no temperature limit during their own working process. If the liquid in the water container evaporates completely, if the heating element does not have closed-loop control of a temperature sensor (if a sensor is used to achieve closed-loop control, the cost will be further increased), it is easy to burn the machine. Therefore, it is not suitable for long-term cooking scenarios. Utility Model Content

[0004] The present application provides a water-proof electric stew pot to solve the above-mentioned technical problems of high noise and unsuitability for long-term cooking scenarios.

[0005] On the one hand, the technical solution adopted in one embodiment of the present application is:

[0006] A water-proof electric stew pot, comprising:

[0007] The pot body includes a water container, an outer shell and a base, wherein a water cavity is formed inside the water container, the water container has a container side wall and a container bottom wall, and the container bottom wall has a peripheral edge area close to the container side wall;

[0008] a stewing pot, the stewing pot being located in the water holding cavity;

[0009] a PTC heating element for directly heating water in the water holding chamber, the PTC heating element being disposed in the peripheral edge region and close to the rear side of the housing;

[0010] The operation panel is arranged on the shell and close to the front side of the shell.

[0011] In the above-mentioned water-proof electric stew pot, there is a first gap and a second gap between the side wall of the container and the side wall of the stewing pot. The width of the first gap is greater than the width of the second gap. At least part of the PTC heating element is located in the area of the peripheral edge area corresponding to the first gap, and the second gap is set close to the operation panel.

[0012] In the above-mentioned water-proof electric stew pot, the water-proof electric stew pot further includes a limiting structure, and the stew pot is placed on the limiting structure, so that the limiting structure limits the placement position of the stew pot.

[0013] In the above-mentioned water-proof electric stew pot, the side wall of the container is arranged to protrude backwards corresponding to the front side portion of the operation panel.

[0014] In the above-mentioned water-proof electric stew pot, the bottom wall of the container is provided with a limiting boss protruding into the water cavity, the limiting boss is in contact with the bottom wall of the stew pot, and the PTC heating element is located outside the projection of the limiting boss onto the bottom wall of the container.

[0015] In the above-mentioned water-proof electric stew pot, the limiting boss is arranged away from the center of the bottom wall of the container and close to the operation panel.

[0016] In the above-mentioned water-proof electric stew pot, the bottom wall of the stew pot is provided with supporting ribs, and the bottom wall of the stew pot includes an inner side of the bottom wall located inside the supporting ribs and an outer side of the bottom wall located between the supporting ribs and the side wall of the stew pot. The limiting boss is fitted with the inner side of the bottom wall, and the PTC heating element is located on the outer side of the projection of the supporting ribs onto the bottom wall of the container.

[0017] In the above-mentioned water-proof electric stew pot, the PTC heating element is in the shape of an elongated strip, and a circuit board corresponding to the operation panel is further provided on the shell. The length direction of the PTC heating element extends along the length direction of the circuit board projected toward the bottom wall of the container.

[0018] In the above-mentioned water-proof electric stew pot, the stew pot has a stew pot side wall and a stew pot bottom wall, and a peripheral space is provided between the stew pot side wall and the container side wall, and at least part of the peripheral edge area forms the bottom wall of the peripheral space.

[0019] In the above-mentioned water-proof electric stew pot, the portion of the bottom wall of the container located in the peripheral edge area is provided with a heating trough, the PTC heating element constitutes the bottom wall of the heating trough, and the bottom wall of the heating trough is lower than the upper surface of the bottom wall of the container.

[0020] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0021] 1. The bottom wall of the container has a peripheral edge area close to the side wall of the container, and the PTC heater is used to directly heat the water in the water holding cavity. The PTC heater is arranged in the peripheral edge area and close to the rear side of the shell. Such a design can make the PTC heater as far away from the center of the water holding cavity as possible in the water holding container. When the stewing pot is placed in the water holding container, the shielding of the PTC heater by the bottom wall of the stewing pot can be minimized. In this way, after the PTC heater heats the water in the water holding cavity and boils, the bubbles generated will be as far away from the bottom wall of the stewing pot as possible, thereby avoiding the bottom wall of the stewing pot hindering the bubbles from floating up quickly, so that the bubbles generated can float quickly to the water surface and pass through the air outlet of the pot lid and The air is discharged in a timely manner, which solves the problem that in the cooking process of the existing water-proof electric stew pot, the bottom wall of the stew pot blocks the bubbles, causing small bubbles to gather into large bubbles, resulting in violent surges of the liquid surface and easy emission of large noise. In addition, since the operation panel is arranged on the shell and close to the front side of the shell, and the PTC heating element is arranged close to the back side of the shell, the noise source can be kept as far away from the operation panel as possible, thereby reducing the user's perception of noise during operation and improving the user experience. Finally, as the temperature of the PTC heating element increases, the material resistance will increase, and it has the characteristic of automatic constant temperature after thermal equilibrium, so it is more suitable for scenarios that require long cooking times, making the entire cooking process safer and more reliable.

[0022] 2. A first gap and a second gap are defined between the sidewall of the container and the sidewall of the stew pot. The width of the first gap is greater than the width of the second gap. At least a portion of the PTC heater is located within the peripheral edge region corresponding to the first gap, and the second gap is positioned closer to the operating panel. This design allows a larger amount of bubbles to emerge from the first gap, while a smaller amount emerges from the second gap. This reduces the impact of the bubbles on the water in the second gap, thereby reducing noise from the front side and further minimizing the user's perception of noise during operation.

[0023] 3. The waterproof electric stew pot also includes a limiting structure, on which the stew pot is placed, so that the limiting structure restricts the placement of the stew pot. This design, by limiting the placement of the stew pot by the limiting structure, ensures that when the stew pot is placed in the water chamber, the second gap between the front side wall of the container and the front side wall of the stew pot is smaller than the first gap between the rear side wall of the container and the rear side wall of the stew pot, thereby ensuring a noise reduction effect.

[0024] 4. The side wall of the container is designed to protrude backwards from the front of the operating panel. This design can reduce the fluctuation of water on the side of the operating panel during heating, thereby detecting noise on the front side.

[0025] 5. The bottom wall of the container is equipped with a limiting boss that protrudes into the water chamber. The limiting boss is in contact with the bottom wall of the stewing pot, and the PTC heater is located outside the projection of the limiting boss onto the bottom wall of the container. The contact of the limiting boss with the bottom wall of the stewing pot effectively blocks water from flowing forward from the bottom wall of the stewing pot, forcing water to flow forward from the surrounding side. This prevents bubbles from entering the bottom of the stewing pot and causing impact noise, thus facilitating quiet cooking. It also prevents large fluctuations in the liquid surface, thereby reducing noise. Finally, the blocking of the limiting boss prevents bubbles from continuing to move inward, thus preventing small bubbles from merging into larger ones. After a short period of time on the outside of the projection, the bubbles rise to the liquid surface, thereby reducing noise.

[0026] 6. The limiting boss is positioned offset from the center of the bottom wall of the container and closer to the operating panel. This design allows the gap between the front sidewall of the container and the front sidewall of the stewing pot to be smaller than the gap between the rear sidewall of the container and the rear sidewall of the stewing pot. This allows a large amount of bubbles to emerge from the gap between the rear sidewall of the container and the rear sidewall of the stewing pot, while a small amount of bubbles emerge from the gap between the front sidewall of the container and the front sidewall of the stewing pot. This reduces the impact of bubbles on the water in the gap between the front sidewall of the container and the front sidewall of the stewing pot, thereby reducing noise on the front side and further alleviating the user's perception of noise during operation.

[0027] 7. The bottom wall of the stewing pot is equipped with support ribs. The bottom wall includes an inner side located within the support ribs and an outer side located between the support ribs and the side walls of the stewing pot. The limiting boss is in contact with the inner side of the bottom wall, and the PTC heater is located outside the projection of the support ribs onto the bottom wall of the container. This design allows the left and right, front and back positions of the stewing pot to be limited by the support ribs. When the stewing pot is placed, the PTC heater is not obstructed as much as possible, thereby reducing noise.

[0028] 8. The PTC heater is in the form of an elongated strip, and a circuit board corresponding to the operating panel is mounted on the outer shell. The length of the PTC heater extends along the length of the circuit board projected toward the bottom wall of the container. This design not only facilitates extrusion molding of the PTC heater, allowing for mass production and reducing production costs, but also increases the heating efficiency of the PTC heater by maximizing its length while minimizing obstruction by the bottom wall of the stew pot, given the limited radial dimensions of the peripheral edge area.

[0029] 9. A heating trough is located within the peripheral edge of the container's bottom wall. The PTC heater forms the bottom wall of the heating trough, which is lower than the upper surface of the container's bottom wall. This design makes it the lowest point of the water container. Therefore, during normal cooking, regardless of the amount of water in the container, sufficient water can flow into the heating trough, ensuring that there is always water in the heating trough and reducing the risk of the heater drying out. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 A longitudinal cross-sectional view of a water-proof electric stew pot provided in an embodiment of the present application;

[0032] Figure 2 A top view of the water-proof electric stew pot provided in an embodiment of the present application;

[0033] Figure 3 A cross-sectional view of the stew pot structure provided in an embodiment of the present application;

[0034] Figure 4 A cross-sectional view of a heating element provided in an embodiment of the present application;

[0035] Figure 5 A cross-sectional view of another heating element provided in an embodiment of the present application;

[0036] Figure 6 A partially enlarged schematic diagram provided in an embodiment of the present application;

[0037] Figure 7 A three-dimensional diagram provided for an embodiment of the present application;

[0038] Figure 8 This is a transverse cross-sectional view of the water-proof electric stew pot provided in an embodiment of the present application.

[0039] in,

[0040] 100, pot body; 200, stew pot; 300, pot lid;

[0041] 101. Housing; 102. Water container; 103. Base; 104. Water chamber; 105. Heating element; 106. Operation panel; 107. Mounting chamber; 108. Heating area; 109. Circuit board;

[0042] 1021, container side wall; 1022, container bottom wall; 1023, first area; 1024, second area; 1025, fourth area; 221, limiting boss;

[0043] 1051, heat conducting element; 1052, insulation layer; 1053, PTC heating element; 1054, fixing cavity; 1055, heat transfer surface; 1081, heating trough; 1082, sealing ring; 1083, cover plate; 1084, insulation layer; 1085, heat dissipation hole; 1086, first fixing position; 1031, second fixing position; 1087, fixing column; 1088, limiting rib; 1089, power cord slot;

[0044] 551, core heating area; 552, peripheral heat transfer area;

[0045] 110. peripheral edge area; 120. peripheral spacing space;

[0046] 201, bottom wall of stewing pot; 202, side wall of stewing pot;

[0047] 2011, supporting ribs; 2012, inner side of bottom wall; 2013, outer side of bottom wall; 2014, arc-shaped transition portion. DETAILED DESCRIPTION

[0048] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0049] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0050] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application 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. Therefore, they cannot be understood as limitations on the present application.

[0051] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0053] The present application proposes a water-proof electric stew pot, which heats the food in the stew pot through water bath heating, so that the food in the stew pot is heated evenly, so as to cook delicious, soft, nutritious and healthy soups, porridges, stews, beauty-enhancing foods, complementary foods or foods for mothers and babies.

[0054] refer to Figure 1 The water-proof electric stew pot comprises a pot body 100, a stewing pot 200 placed in the pot body 100, and a pot lid 300 covering the pot body 100. The pot body 100 includes a water container 102, an outer shell 101 and a base 103. The side of the outer shell 101 is provided with an operation panel 106. A water cavity 104 is formed inside the water container 102. The stewing pot 200 is located in the water cavity 104. When in use, a certain amount of water is added to the water cavity 104 so that the stewing pot is submerged in the water. A heating element 105 is provided on the water container 102. The heat of the heating element 105 is transferred to the water in the water cavity 104. The heat of the water in the water cavity 104 is then transferred to the ingredients in the stewing pot, thereby achieving water-proof stewing.

[0055] The stewing pot is made of ceramic and fired at high temperature. The ceramic stewing container has a small specific heat capacity, so the heat required to increase the temperature by 1°C is small, so a smaller power heating element can be used to heat it. Moreover, due to its poor thermal conductivity, the absorbed heat is easily accumulated in the container body, achieving long-term high temperature, which can provide a long-term high-temperature cooking environment for the food in the container. In summary, the water-proof electric stew pot has the advantages of low requirements for the form of heating elements and simple appliance structure, so it is low in price and can cook some recipes whose taste cannot even be matched by pressure cookers, so it is deeply loved by users. In addition, another feature of the waterproof electric stew pot is that the stew pot is placed in the water container 102, and the heating element 105 heats the water in the water container 102 instead of directly heating the stew pot. The stew pot absorbs the heat from the boiling water and then heats the ingredients in the stew pot. Since the water temperature has an upper limit, when the water in the water chamber 104 boils, the temperature remains stable, so that the heating temperature of the stew pot is close to the boiling point of water. As long as there is water, the temperature can be close to the boiling point, so that the stew pot is heated very evenly. It is particularly suitable for making porridge and other foods that require slow cooking, which can fully lock in nutrients and prevent the pot from getting sticky.

[0056] One problem brought about by the characteristics of water-bath stewing is that it makes too much noise. Since the stewing time is long and porridge is mostly a breakfast recipe, water-bath electric stew pots are often used in the leisure time at night to cook. During the cooking process, the bubbles generated by the boiling water in the water chamber 104 are likely to generate noise, affecting sleep and giving people a bad experience. The main reason for the noise is that the bubbles gather at the bottom of the stew pot and cannot float to the water surface in time, thus gathering into large bubbles, and then rising to the liquid surface, pushing a large amount of water to surge and make noise.

[0057] To solve this technical problem, the present application further adopts the following technical solutions:

[0058] like Figure 1 、 2 As shown in FIG. 3 , the water container 102 has a container side wall 1021 and a container bottom wall 1022. The container bottom wall 1022 has a peripheral edge area 110 close to the container side wall 1021. The heating element 105 is arranged in the peripheral edge area 110. A peripheral spacing space 120 is provided between the stewing pot side wall 202 of the stewing pot 200 and the container side wall 1021. At least a portion of the peripheral edge area 110 forms the bottom wall of the peripheral spacing space 120. Through the above arrangement, the position of the heating element 105 in the water container 102 is roughly the edge of the area projected from the stewing pot bottom wall 201 of the stewing pot 200 onto the container bottom wall 1022, that is, from Figure 2From the perspective of perspective, the bottom wall 201 of the stewing pot 200 should minimize the obstruction of the heating element 105. In this way, after the heating element 105 heats the water in the water holding chamber 104 and boils it, the bubbles generated will be as far away from the bottom wall 201 of the stewing pot 200 as possible, thereby avoiding the bottom wall 201 of the stewing pot 200 hindering the bubbles from quickly floating up, so that the generated bubbles can quickly float to the water surface and be discharged in time through the air outlet of the pot cover 300, solving the problem of the existing water-proof electric stew pot cooking process, due to the obstruction of the bubbles by the bottom wall 201 of the stewing pot, which causes small bubbles to gather into large bubbles, causing the liquid surface to surge violently and easily emitting loud noises.

[0059] The heating element 105 of the present application uses a PTC heater (positive temperature coefficient thermistor). As the temperature rises, the resistance of the material increases, and after thermal equilibrium, the PTC heater has the characteristic of automatically maintaining a constant temperature. Therefore, it is more suitable for scenarios requiring long cooking times, making the entire cooking process safer and more reliable. The PTC heater is located within the peripheral edge area 110 on the bottom wall 1022 of the container. In some existing electric stew pots, the heating element is located on the side wall of the container, and the internal heating is provided through the side wall of the container. Since the water in the water chamber of the waterproof electric stew pot easily evaporates during cooking, the liquid level will gradually drop. If the heating element is located on the side wall of the container, it will easily dry out, causing damage to the appliance and posing a safety risk. Side wall heating is suitable for metal water containers. The water container of the waterproof electric stew pot in this embodiment is made of plastic. In some alternative embodiments, the water container can be made of metal.

[0060] In order to achieve a good heating effect, in this embodiment, Figure 1 、 2As shown in Figures 6 and 7, the heating element 105 is arranged in the installation cavity 107 between the water container 102 and the shell 101 or the base 103. For this purpose, a heating area 108 is provided at the edge of the bottom wall 1022 of the container. The heating area 108 is located in the peripheral edge area 110. The heating area 108 is away from the center of the water cavity 104, so that after the stewing pot 200 is placed in the water container 102, the heating area 108 can be located as much as possible at the edge of the bottom wall 201 of the stewing pot, rather than in the center of the bottom wall 201 of the stewing pot. The heating element 105 is arranged in the heating zone 108, and the PTC heating element contacts the liquid in the water chamber 104 through the heating zone 108, thereby heating the liquid in the water container 102; the heating zone 108 is set on the bottom wall 1022 of the container, so that the actual effective heating area of the heating element 105 is limited to the area where the heating zone is located. For this reason, it is only necessary to design the position and shape of the heating zone to effectively reduce the noise. As for the shape and structure of the heating element itself, it can be selected or designed according to actual conditions. For this reason, the limited space or area of the peripheral edge can be effectively utilized to achieve a better noise reduction effect; in this embodiment, other area parts outside the area where the heating zone is located are areas that cannot be effectively heated.

[0061] In this embodiment, the heating zone 108 is arranged to penetrate along the thickness direction of the container bottom wall 1022, so that the heating element 105 installed on the outer surface side of the container bottom wall 1022 is exposed, so as to facilitate the heating element to directly heat the liquid in the water container 102; the heating element is installed on the outer surface side of the container bottom wall 1022, that is, in the installation cavity 107 between the water container 102 and the outer shell 101 or the base 103, which can ensure electrical safety, ensure the safety of users' electricity use, and facilitate wiring for easy installation.

[0062] In this embodiment, Figure 6 As shown, the bottom wall 1022 of the container forms a heating trough 1081 in the heating area 108, and the PTC heating element constitutes the bottom wall of the heating trough, so that the bottom wall of the heating trough 1081 is lower than the upper surface of the bottom wall 1022 of the container, making it the lowest point of the water container 102. Therefore, during normal cooking, no matter how much water is in the water container 102, it can be fully guaranteed that the water in the water container 102 can flow into the heating trough 1081, so as to ensure that there is water in the heating trough 1081 at all times, reducing the risk of dry burning of the heating element.

[0063] like Figure 4 、 5 As shown, in this embodiment, the PTC heating element adopts a flat-plate heating element, which includes a heat-conducting element 1051, an insulating layer 1052 and a PTC heating plate 1053. The heat-conducting element 1051 has a fixed cavity 1054. The PTC heating plate 1053 is wrapped with the insulating layer 1052 and installed in the fixed cavity 1054 to achieve insulation from the heat-conducting element 1051, and the wire is exposed from one end of the fixed cavity 1054.

[0064] In one specific embodiment, the heat conductor 1051 is an aluminum profile manufactured by extrusion. Due to the limitations of the extrusion molding process, the fixed cavity 1054 cannot be formed into other curved shapes such as arcs. Therefore, the fixed cavity 1054 is an elongated cavity with two open ends. The elongated shape of the fixed cavity 1054 makes the core heating area of the entire PTC heater distributed in an elongated strip shape, that is, the entire heater may be elongated. To improve heat transfer efficiency, the entire core heating area is set within the heating zone. To this end, the shape of the heating zone 108 can be set to be elongated.

[0065] Specifically, such as Figure 1 、 2 As shown, the circumferential space 120 has a width direction WD from the center of the container bottom wall 1022 to the container side wall 1021, and a circumferential direction RD extending circumferentially along the container side wall 1021. The shape of the heating zone 108 projected onto the container bottom wall is an elongated strip, and the length direction L of the heating zone 108 extends toward the circumferential direction RD of the circumferential space 120, thereby making full use of the limited edge space to install the elongated PTC heating element, thereby ensuring that the core heating area of the PTC heating element in the heating zone 108 is located in the heating zone 108, achieving higher heating efficiency. It should be understood that not only the circular container side wall contour has a circumferential direction RD, but other contour shapes also have a circumferential direction, that is, the circumferential direction can be a straight line or an arc. Specifically, the shape of the container side wall 1021 of the water container 102 in the top view direction can be various and is not necessarily a strict circle or rectangle. For example, it can be as shown in FIG. Figure 2 The generally square structure shown in FIG is relatively rounded and generally square, but has many arcs in the circumferential direction. It should also be understood that the longitudinal direction L of the heating zone 108 extends toward the circumferential direction RD of the circumferential side spacing space 120, which does not mean that the longitudinal direction L of the heating zone 108 extends parallel to the circumferential direction RD of the circumferential side spacing space 120. Figure 2 As shown, the length direction L of the heating zone 108 extends approximately toward the circumferential direction RD at an angle, that is, the length direction of the heating zone extends toward the outside of the first area or the second area, and further, the length direction of the heating element extends toward the outside of the first area or the second area.

[0066] The width direction W of the heating zone 108 extends along the width direction WD of the peripheral space 120. The length of the heating zone 108 is greater than its width. This prevents the heating zone from being excessively obscured by the bottom wall of the stew pot, which helps reduce noise. In some variations of this embodiment, the heating zone can also be configured in other shapes, such as a sector or a circle.

[0067] like Figure 4 、 5 As shown, the heat transfer member 1051 of the PTC heating element includes a heat transfer surface 1055, which is arranged toward the heating zone 108. The heat transfer surface 1055 includes at least a core heating zone 551, which is arranged corresponding to the fixed cavity 1054. Thus, the heat generated by the heating plate in the fixed cavity 1054 can be quickly transferred to the core heating zone 551 through the heat transfer member 1051. The heat transfer surface 1055 of some heat transfer members 1051 also has a peripheral heat transfer zone 552, which is arranged corresponding to the outside of the core heating zone 551. The heat of the core heating zone 551 needs to be transferred to the peripheral heat transfer zone 552 through the heat transfer member before the peripheral heat transfer zone 552 can be heated. At least part or all of the heating element is arranged at the location of the heating zone. In some embodiments, only the core heating zone 551 is provided. In some embodiments, both the core heating zone 551 and the peripheral heat transfer zone 552 are provided. The heating element located at the heating zone can be any part of the core heating zone and the peripheral heat transfer zone. In this embodiment, the core heating area is located in the heating area.

[0068] In some specific embodiments of the present application, the heat transfer surface 1055 located at the heating zone 108 is the core heating zone 551, thereby improving heating efficiency, quickly boiling the water in the water container 102, and promptly transferring heat to the water in the water container 102 to maintain the boiling of the water in the container. In some alternative embodiments, the heat transfer surface 1055 located toward the heating zone 108 includes both the core heating zone 551 and the peripheral heat transfer zone 552, or only the peripheral heat transfer zone 552.

[0069] In some specific embodiments of the present application, Figure 2As shown, the bottom wall 1022 of the container has a first area 1023 and a second area 1024. The projection area of the stewing pot 200 toward the bottom wall 1022 of the container forms the first area 1023, and the projection area of the bottom wall 201 of the stewing pot toward the bottom wall 1022 of the container forms the second area 1024. The area of the second area 1024 is smaller than the area of the first area 1023. The projection area of the heating zone 108 toward the bottom wall of the container partially overlaps with the first area 1023 or the second area 1024. The overlapping setting means that the heating zone 108 or the heating element arranged in the peripheral edge area 110 is partially located in the first area 1023 or the second area 1024, and there is partial obstruction in the positive projection direction. In this case, it is also one of the noise reduction schemes. Specifically, the overlapping part is roughly the outer side of the bottom wall of the stewing pot and the projection area of the side wall of the stewing pot, that is, the area demarcated by the edge line of the first area 1023 or the second area 1024 to the edge line of the heating zone 108; further, in order to achieve the noise reduction effect, it can be selected The first area 1023 is not overlapped with the second area 1024 because the second area 1024 is roughly the range of the bottom wall 201 of the stewing pot, which has a greater impact on the noise reduction effect. Therefore, it is selected not to overlap with the second area 1024; the first area 1023 is likely to overlap with the heating area 108 because, due to the limitations of the manufacturing process, the side wall 202 of the stewing pot generally has a certain draft angle, so the side wall 202 of the stewing pot is not set straight up and down in the vertical direction. For this reason, the maximum diameter of the stewing pot 200 is often larger than the maximum diameter of the bottom wall. The larger diameter makes the second region 1024 smaller than the first region 1023. The draft angle of the stewing pot sidewall 202 causes its diameter to gradually increase from the bottom to the top of the stewing pot bottom wall 201, and is arranged to be inclined outward. Because the draft angle is not too large, the outward inclination of the stewing pot sidewall 202, which blocks the heating element or heating area, does not significantly hinder the rapid rise of bubbles. Therefore, the heating area 108 can overlap with the first region 1023 without significantly affecting the noise reduction effect. In this embodiment, the heating area 108 partially overlaps with both the first region 1023 and the second region 1024.

[0070] In some specific embodiments of the present application, Figure 3 As shown, a support rib 2011 is provided on the bottom wall 201 of the stewing pot. The bottom wall 201 of the stewing pot is divided into an inner side 2012 of the bottom wall located inside the support rib 2011 and an outer side 2013 of the bottom wall located between the support rib 2011 and the side wall 202 of the stewing pot. The outer side 2013 of the bottom wall includes an arc-shaped transition portion 2014. The projection of the arc-shaped transition portion 2014 and the outer side 2013 of the bottom wall to the side of the bottom wall 1022 of the container is a third area. The third area is Figure 2The annular area between the fourth region 1025 and the second region 1024 is the projection of the support ribs 2011 and the inner side of the bottom wall 2012 onto the container bottom wall 1022. The heating zone 108 partially overlaps the third region, so the heating element located on the heating zone 108 is located below the third region, that is, outside the projection of the support ribs onto the container bottom wall. By locating the heating zone or a portion of the heating element within the third region below the area between the support ribs 2011 and the side wall 202 of the stewing pot, rising bubbles generated by the heating element will only collide with the outer side of the bottom wall 2013 or the curved transition portion 2014. The bubbles are blocked by the support ribs 2011 and prevented from continuing to move toward the inner side of the bottom wall 2012. This prevents small bubbles from merging into larger ones. After a short pause on the outer side of the bottom wall 2013 or the curved transition portion 2014, the bubbles will rise to the liquid surface, thereby reducing noise.

[0071] Of course, in some specific embodiments of the present application, the heating zone below the area between the stewing pot side wall 202 and the support rib 2011 is very small, and most of the heating zone is located outside the projection of the stewing pot bottom wall 201 downwardly toward the container bottom wall 1022. This prevents bubbles generated in the heating zone from colliding with the stewing pot, thereby reducing noise.

[0072] like Figure 1 As shown, the housing 101 is provided with an operation panel 106. In this application, the side provided with the operation panel 106 is defined as the front side, and the side opposite to the side provided with the operation panel 106 is defined as the rear side. The heating area or PTC heating element provided in the peripheral edge area 110 is arranged close to the rear side, so that the noise source is as far away from the front side as possible, that is, away from the operation panel 106, thereby reducing the user's perception of noise during operation and improving the user experience.

[0073] like Figure 8As shown, the PTC heater in this embodiment is in the form of an elongated strip. A circuit board 109 corresponding to the operating panel 106 is also provided on the housing 101. The circuit board 109 is disposed within the mounting cavity 107 between the water container 102 and the housing 101. The operating panel 106 is located outside the circuit board 109 and is used to trigger the circuit board 109. The length direction of the circuit board 109 projected onto the container bottom wall 1022 extends along the left-right direction of the housing 101, while the length direction L of the PTC heater extends along the length direction of the circuit board 109 projected onto the container bottom wall 1022. That is, the length direction L of the PTC heater extends along the left-right direction of the housing 101. This design not only facilitates the extrusion molding of the PTC heater, enabling mass production and reducing production costs, but also increases the heating efficiency of the PTC heater by maximizing the length L of the PTC heater while minimizing obstruction by the stew pot bottom wall 201, given the limited radial dimension of the peripheral edge region 110 (the width direction WD of the peripheral spacing space 120).

[0074] In addition, in this embodiment, there is a first gap and a second gap between the container side wall 1021 and the stewing pot 200. The first gap is the gap on the side where the PCT heating element is provided, such as the gap or width D1 of the peripheral space 120 on the rear side; the second gap is the gap on the side where no heating area or heating element is provided, such as the gap or width D2 of the peripheral space 120 on the front side; Figure 1 As shown, the width of the first gap D1 is greater than the width of the second gap D2, and at least part of the PTC heating element is located in the area of the peripheral edge area 110 corresponding to the first gap, while the second gap is arranged close to the operation panel 106. Since the second gap is smaller, a large number of bubbles can be emitted from the first gap, while a small number of bubbles can be emitted from the second gap, thereby reducing the fluctuation of the water in the second gap caused by the bubbles, thereby reducing the noise on the front side and further reducing the user's perception of noise during operation. In addition, the thickness of the water around the stewing pot is reduced, which is conducive to the water in the water cavity 104 to quickly heat up and maintain boiling, thereby making the water temperature around the side wall 202 of the stewing pot more uniform, and the stewing pot is surrounded by high-temperature water, which can improve the cooking effect.

[0075] In order to ensure that the heating zone is not blocked as much as possible each time the stewing pot 200 is taken out and placed, and to ensure that the above-mentioned first gap and second gap are formed between the side wall 1021 of the container and the stewing pot 200 after the stewing pot 200 is placed, the water-proof electric stew pot in this embodiment further includes a limiting structure. The stewing pot 200 is placed on the limiting structure. The limiting structure ensures that the placement position of the stewing pot 200 is guaranteed when the user places the stewing pot 200 into the water container 102, thereby ensuring that the second gap between the front side wall of the container and the front side wall of the stewing pot is smaller than the first gap between the rear side wall of the container and the rear side wall of the stewing pot, and that the heating zone 108 can be located as far as possible on the outside of the projection of the bottom wall 201 of the stewing pot onto the bottom wall 1022 of the container.

[0076] In this embodiment, the limiting structure is provided on the water container 102. In a specific embodiment, as shown in FIG. Figure 1 、 2 As shown, the limiting structure is a limiting boss 221 on the bottom wall 201 of the stewing pot. The limiting boss 221 is protruding into the water holding chamber 104, and the limiting boss 221 is set away from the center of the bottom wall of the container and close to the operation panel 106. The support rib 2011 is sleeved on the outside of the limiting boss 221, and the inner side 2012 of the bottom wall of the stewing pot 200 is in contact with the limiting boss 221. The outer side 2013 of the bottom wall is located outside the limiting boss 221, so that the support rib 2011 is used to complete the left and right, front and back limiting of the stewing pot 200, so that after the stewing pot 200 is placed, the second gap D2 is smaller than the first gap D1, so as not to block the heating area as much as possible, and the PTC heating element is located outside the projection of the support rib 2011 onto the bottom wall 1022 of the container. When the user takes or places the stewing pot 200, the limiting function of the limiting boss 221 ensures that the stewing pot 200 can block the heating element or heating area on the bottom wall 1022 of the container as little as possible each time, and ensures that the lateral spacing space 120 between the stewing pot side wall 202 and the container side wall 1021 is large enough to reduce noise. In the embodiment of the present application, the limiting structure is integrally formed with the water container 102. This integrally formed limiting structure reduces the number of accessories and eases cleaning difficulty within the water container 102, offering the advantages of a simple structure, ease of cleaning, and low cost. Furthermore, when the bottom of the stewing pot is in contact with the limiting boss 221, it effectively blocks water from flowing forward from the bottom wall 201 of the stewing pot, forcing water to flow forward from the surrounding area. This prevents bubbles from entering the bottom of the stewing pot and causing impact noise, thereby facilitating quiet cooking. Furthermore, it also prevents significant fluctuations in the liquid surface, thereby reducing noise. Finally, the limiting boss 221 blocks bubbles from continuing to move inward, preventing small bubbles from merging into larger ones. Instead, the bubbles remain outside the projection for a short time before rising to the liquid surface, thereby reducing noise. This prevents bubbles from entering the bottom of the stewing pot and causing impact noise, thereby facilitating quiet cooking.

[0077] Furthermore, in order to further reduce the second gap between the front side wall of the container and the front side wall of the stew pot, the container side wall 1021 is protruded backwards corresponding to the front side of the operation panel 106. This design can reduce the fluctuation of water on the side of the operation panel 106 during heating, thereby detecting noise on the front side.

[0078] In some alternative embodiments of the present application, the supporting ribs can be omitted, and the top surface of the limiting boss is provided with a positioning groove, and the bottom wall of the stewing pot is provided with a positioning block inserted into the positioning groove. Such a design can also achieve the fitting of the limiting boss and the bottom wall of the stewing pot while ensuring that the stewing pot is placed accurately.

[0079] In some alternative embodiments of the present application, when the limiting boss is centrally arranged on the bottom wall of the container and the stewing pot is centered and restricted in the water holding chamber, the front part of the operating panel corresponding to the side wall of the container can be protruded backward so that the second gap between the front side wall of the container and the front side wall of the stewing pot is smaller than the first gap between the rear side wall of the container and the rear side wall of the stewing pot, thereby achieving a noise reduction effect.

[0080] Of course, in another embodiment of the present application, a removable support member is provided within the water container. The support member is placed directly within the water container, with the lower side of the support member contacting the bottom wall of the container and the upper side supporting the stewing pot. A limiting structure is provided on the support member, and the limiting structure on the support member limits the stewing pot to a certain range, thereby minimizing the stewing pot from blocking the heating zone. Of course, the projection of the support member onto the side of the container bottom wall is also located outside the heating zone, thereby preventing the bracket from blocking the heating zone. In some embodiments, the support member can partially block the heating zone, or be provided with a drainage surface, an air outlet window, etc., which can also reduce noise.

[0081] In some embodiments of the present application, a scalding ring is provided at the rim of the water container, and the stew pot is mounted on the ring, making it easier for the user to remove and place the stew pot and preventing burns. A retaining structure is provided on the ring to limit the position of the stew pot within the water container, thereby reducing the area of the heating zone obscured by the stew pot. In some embodiments, the bottom wall of the stew pot is spaced apart from the bottom wall of the container, allowing the bottom wall of the stew pot to be submerged in the high-temperature water, thereby heating the stew pot from all directions and improving the cooking effect.

[0082] In some embodiments of the present application, the width of the circumferential space 120 at different positions in the circumferential direction RD is different, that is, the width between the stewing pot side wall 202 and the container side wall 1021 in the width direction WD of the circumferential space 120 is different.

[0083] In some alternative embodiments of the present application, multiple stewing pots may be provided, with the PTC heating element positioned near the sidewall edge of the water container. Multiple stewing pots are placed in the center of the water chamber, thereby achieving silent heating. In this case, the first area is formed by the projections of the multiple stewing pots toward the bottom wall of the container; the second area is formed by the projections of the multiple stewing pots' bottom walls toward the bottom wall of the container.

[0084] In some alternative embodiments of the present application, the water container can be elliptical, the stewing pot can be circular, and the heating zones can be arranged at both ends of the long axis of the ellipse; the water container can be rectangular, the stewing pot can be circular, and the heating zone can be arranged near one side of the rectangle. Of course, the water container can also be of other shapes.

[0085] In some embodiments of the present application, Figure 6As shown, the heating element 105 is sealed with the water container 102, and a sealing ring 1082 is provided between the heating element 105 and the water container 102 to prevent water leakage in the heating area. The sealing ring 1082 is made of silicone material and can withstand high temperatures without sealing failure.

[0086] In order to achieve a good seal between the heating element and the heating area, a cover plate 1083 is further provided. The heating element 105 is fixed to the water container 102 through the cover plate 1083. The water container 102 has a screw column and the cover plate 1083 has a screw hole, so that the cover plate 1083 can be screwed. An insulating layer 1084 is provided between the heating element 105 and the cover plate 1083. The insulating layer 1084 and the sealing ring 1082 are integrally formed and are both silicone parts. The provision of the insulating layer 1084 can reduce the risk of the cover plate 1083 being melted by the heating element 105. Further, as Figure 7 As shown, the cover plate 1083 is provided with heat dissipation holes 1085 to facilitate heat dissipation from the heating element. The provision of heat dissipation holes 1085 and heat insulation layer 1084 can prevent the water container 102 and the cover plate 1083 from burning or melting due to excessive temperatures, thereby preventing the resulting seal failure and water leakage. In some alternative embodiments of the present application, either heat dissipation holes 1085 or heat insulation layer 1084 can be provided.

[0087] In order to facilitate the fixing of the base 103, as Figure 6 、 7 As shown, a first fixing position 1086 is further provided on the cover 1083, and a second fixing position 1031 is provided on the base 103. The first fixing position 1086 and the second fixing position 1031 are fixedly connected, and the fixed connection can be fixed by screws, thereby realizing the fixed connection between the base 103 and the water container 102; the first fixing position 1086 has a fixing column 1087 and a limiting rib 1088, and a power cord slot 1089 is provided between the fixing column 1087 and the limiting rib 1088, and the limiting rib 1088 is provided around the fixing column 1087, so that the power cord slot 1089 is surrounded by the fixing column 1087, and the power cord slot 1089 is open on one side of the shell 101; after the power cord is clamped in the power cord slot 1089, it is led out from the shell 101, so that the fixing column 1087 can be used to improve the pulling performance of the power cord and increase the service life of the power cord.

[0088] In this way, the cover 1083 not only achieves the limited fixation of the heating element, but also achieves the sealing of the heating element, and also achieves the fixed connection of the base 103, and improves the pulling performance of the power cord; this greatly improves the utilization efficiency of the structure, making the product structure simple and the installation efficient. It should be understood that the fixing column connecting the base 103 and the water container 102 also includes other fixing columns directly provided on the water container 102. For example, the fixing column on the cover 1083 can be defined as the first fixing column, and the fixing column on the water container 102 can be defined as the second fixing column. There are two second fixing columns and one first fixing column, which are distributed at a 120-degree angle to each other. In this way, by providing multiple fixing columns, the base 103 and the water container 102 can be securely fixed.

[0089] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0090] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0091] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A water-proof electric stew pot, characterized in that: include: The pot body comprises a water container, an outer shell and a base, wherein the water container forms a water cavity therein, the water container has a container side wall and a container bottom wall, and the container bottom wall has a peripheral edge area close to the container side wall; the stewing pot is located in the water cavity; a PTC heating element for directly heating water in the water holding chamber, the PTC heating element being disposed in the peripheral edge region and close to the rear side of the housing; The operation panel is arranged on the shell and close to the front side of the shell.

2. The water-proof electric stew pot according to claim 1, characterized in that: There is a first gap and a second gap between the side wall of the container and the side wall of the stewing pot. The width of the first gap is greater than the width of the second gap. At least part of the PTC heating element is located in the area of the peripheral edge area corresponding to the first gap, and the second gap is set close to the operation panel.

3. The water-proof electric stew pot according to claim 2, characterized in that: The water-proof electric stew pot further comprises a limiting structure, and the stew pot is placed on the limiting structure so that the limiting structure limits the placement position of the stew pot.

4. The water-proof electric stew pot according to claim 1, characterized in that: The side wall of the container is arranged to protrude rearward corresponding to the front side portion of the operation panel.

5. The water-proof electric stew pot according to claim 1, characterized in that: The bottom wall of the container is provided with a limiting boss protruding into the water cavity, the limiting boss is in contact with the bottom wall of the stew pot, and the PTC heating element is located outside the projection of the limiting boss onto the bottom wall of the container.

6. The water-proof electric stew pot according to claim 5, characterized in that: The limiting boss is arranged away from the center of the bottom wall of the container and close to the operation panel.

7. The water-proof electric stew pot according to claim 5, characterized in that: The bottom wall of the stewing pot is provided with supporting ribs, and the bottom wall of the stewing pot includes an inner side of the bottom wall located inside the supporting ribs and an outer side of the bottom wall located between the supporting ribs and the side wall of the stewing pot. The limiting boss is fitted with the inner side of the bottom wall, and the PTC heating element is located outside the projection of the supporting ribs onto the bottom wall of the container.

8. The water-proof electric stew pot according to claim 1, characterized in that: The PTC heating element is in the shape of an elongated strip. A circuit board corresponding to the operation panel is further provided on the housing. The length direction of the PTC heating element extends along the length direction of the circuit board projected toward the bottom wall of the container.

9. The water-proof electric stew pot according to claim 1, characterized in that: The stewing pot comprises a stewing pot side wall and a stewing pot bottom wall. A peripheral space is defined between the stewing pot side wall and the container side wall. At least a portion of the peripheral edge region forms the bottom wall of the peripheral space.

10. The water-proof electric stew pot according to claim 1, characterized in that: A heating trough is provided on the portion of the bottom wall of the container located within the peripheral edge area. The PTC heating element constitutes the bottom wall of the heating trough, and the bottom wall of the heating trough is lower than the upper surface of the bottom wall of the container.

Images