Electric stewpot

Abstract

The utility model discloses an electric stewpot which comprises an outer pot with a water storage cavity and an inner container, a heating device is arranged below the inner container, the electric stewpot further comprises a flow guide piece arranged between the inner container and the heating device, a plurality of flow guide blades are arranged on the lower side of the flow guide piece, and the flow guide blades are arranged around the axis of the flow guide piece in a bent mode. Each guide vane comprises a first extending section and a second extending section located on the outer side, a first overflowing gap is formed between every two adjacent first extending sections, a second overflowing gap is formed between every two adjacent second extending sections, and the first overflowing gaps are smaller than the second overflowing gaps. And the overflowing gap of the first extension section is small, so that the diversion of water flow and the extrusion effect on bubbles can be improved, and the bubbles are more dispersed. The second overflowing gap is large, on the basis of restraining bubbles, water flow is made to generate rotational flow, the bubbles can be accelerated to be dispersed into a plurality of small bubbles, flowing of the water flow can be accelerated, the small bubbles are rapidly discharged out of the water surface before being gathered into large bubbles, and the noise reduction effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and particularly relates to an electric slow cooker. Background Art

[0002] Water bath stewing is a cooking method in which raw materials are placed in an inner pot, covered, and then the inner pot is placed in an outer pot filled with water and heated with a low fire for a long time to stew the raw materials until they are cooked. The cooking method of water bath stewing can keep the original color of the dishes, the soup is clear, the soup is delicious, and the meat is tender and rotten, so it is more and more popular among cooks. Based on this, the water bath slow cooker has gradually become one of the most popular cooking utensils.

[0003] At present, the water bath slow cooker on the market has a noise problem during the boiling maintenance stage. The noise mainly comes from the water inside the outer pot being heated to generate bubbles. When the bubbles accumulate to a certain extent, large bubbles are formed and float upward, impacting the inner pot to form vibrations, and the bursting sound generated when the large-volume bubbles burst themselves. The current mainstream technology is to reduce the impact force of the bubbles and the bursting sound of the bubbles by reducing the boiling degree. However, this method reduces the heating power of the heating device, thereby lengthening the stewing time and reducing the stewing effect.

[0004] Chinese Patent CN204561811U discloses an electric stewing pot, which is provided with a bubble-breaking component between the heating plate and the inner pot. The lower side of the bubble-breaking component includes a plurality of fan blades arranged at intervals. The bubbles generated on the heating plate move upward along the gaps between the fan blades. When the bubbles approach the plate body, the bubbles move out of the bubble-breaking component from the side of the gaps between the fan blades, so as to achieve the effect of decomposing the bubbles and inhibiting the bubbles from increasing.

[0005] However, in the above solution, the fan blades are only arranged on the outer ring of the plate body. When the heating device heats, the water at the center of the plate body has a higher heating efficiency, and more bubbles are generated at the center of the plate body. Then the water and bubbles flow outward. Since the boiling of the water area at the center of the plate body is more intense, the bursting and impact force of the bubbles are also stronger. Although some bubbles can be dispersed by the fan blades during the outward flow of the water, the bubble-breaking effect is not ideal in the area where the bubbles are more concentrated at the center of the plate body, so the noise reduction effect is poor.

[0006] In addition, the gaps between the fan blades in the above solution are uniform. Although the bubbles can be broken by the extrusion of the fan blades, the guiding effect of the fan blades on the water flow is poor, and an orderly flowing water flow cannot be formed. Furthermore, after the bubbles are dispersed through the gaps between the fan blades, they will gather again to form large bubbles and finally burst to generate noise. And along with the collision sound generated by the irregular flow of the water, the overall noise reduction effect of the water bath slow cooker is not ideal. Content of the Utility Model

[0007] The present utility model provides an electric slow cooker to solve the problems that the position of the fan blades of the existing bubble-breaking component is single, the gaps between the fan blades are uniform, the bubble-breaking area and the bubble-breaking effect are limited, and with the irregular flow of water, the noise reduction effect is not good.

[0008] The technical solution adopted by the present utility model is as follows:

[0009] An electric slow cooker includes an outer pot having a water storage cavity and an inner pot placed in the water storage cavity. A heating device is arranged below the inner pot. The electric slow cooker further includes a guiding member arranged between the inner pot and the heating device. A plurality of guiding vanes are arranged on one side of the guiding member facing the bottom wall of the water storage cavity. The guiding vanes are arranged at intervals along the circumferential direction of the water storage cavity, and the guiding vanes are bent around the axis of the guiding member. Along the radial direction of the guiding member, the guiding vane includes a first extension section and a second extension section located outside the first extension section. A first flow-through gap is provided between adjacent first extension sections, and a second flow-through gap is provided between adjacent second extension sections. The first flow-through gap is smaller than the second flow-through gap.

[0010] The electric slow cooker of the present utility model further has the following additional technical features:

[0011] The first extension section and the second extension section are of an integrally formed structure, and the distance between adjacent two guiding vanes gradually increases along the radial direction of the guiding member.

[0012] The first extension section and the second extension section are of a split structure, and the first flow-through gap and the second flow-through gap are arranged corresponding or offset along the radial direction of the guiding member.

[0013] In the radial direction of the guiding member, the guiding vane is bent towards the first direction; in the axial direction of the guiding member, the guiding vane is bent towards the second direction, and the second direction is the same as or opposite to the first direction.

[0014] The bending angle of the first extension section towards the second direction is smaller than the bending angle of the second extension section towards the second direction.

[0015] One side of the guiding member facing the bottom wall of the water storage cavity has a central region and an edge region surrounding the outer periphery of the central region. The position height of the central region is lower than the position height of the edge region to form a guiding transition surface on the lower side of the guiding member.

[0016] The center of the guiding member is sunk relative to the inner pot to form a guiding transition surface on the lower side of the guiding member and a mating concave surface on the upper side of the guiding member. The gap between the central region of the bottom wall of the inner pot and the mating concave surface is greater than the gap between the edge region of the bottom wall of the inner pot and the mating concave surface.

[0017] A support structure is provided on the rim of the outer pot or the side wall of the water storage cavity, and the inner pot is placed on the support structure so that a flow gap is formed between the bottom wall of the inner pot and the flow guide member; alternatively, support ribs are provided between the bottom wall of the inner pot and the flow guide member, and the inner pot is placed on the support ribs so that a flow gap is formed between the bottom wall of the inner pot and the flow guide member.

[0018] There is a water flow gap between the outer peripheral side of the flow guide member and the side wall of the water storage cavity, and there is a water storage space between the side wall of the inner pot and the water storage cavity. The projection of the water flow gap upward is located within the water storage space.

[0019] An air bubble blocking portion protruding upward is provided at the edge of the flow guide member.

[0020] Due to the adoption of the above technical solutions, the beneficial effects obtained by the present utility model are as follows:

[0021] 1. In the present utility model, a flow guide vane is provided on the lower side of the flow guide member between the inner pot and the heating device. The flow guide vane sequentially includes a first extension section and a second extension section along the radial direction from the inside to the outside, so that the flow guide vane completely covers the central water area and the peripheral water area below the flow guide member. Whether the air bubbles are in the central water area or in the peripheral water area, they can be squeezed by the flow guide vane and thus burst. Therefore, during the process from the generation of the air bubbles to reaching above the flow guide member, the flow guide vane can play the role of decomposing air bubbles and inhibiting the generation of air bubbles. Thus, the action time of the flow guide vane is lengthened, and the bubble breaking effect is improved. At the same time, the first flow gap between adjacent first extension sections is smaller than the second flow gap between adjacent second extension sections, so that the structure of the flow guide vane conforms to the flow paths of the water flow and the air bubbles. During the heating process, the heat of the heating device is concentrated in the central water area below the flow guide member. Therefore, the water here boils more violently, and air bubbles are concentratedly generated. Then, the water flow with a higher temperature carries the air bubbles and spreads around, flowing into the peripheral water area. The flow gap of the corresponding first extension section is smaller, and the blades are distributed more densely, so that the diversion of the water flow and the extrusion of the air bubbles can be improved, making the air bubbles more dispersed and unable to gather into larger air bubbles. As the water flow and the air bubbles flow outward to the water area corresponding to the second extension section, the second flow gap is larger, which improves the guiding effect on the water flow on the basis of ensuring the dispersion and inhibition of air bubbles, and makes the water flow generate a swirl.

[0022] In addition, the flow guiding vanes are bent, making the flow path between two adjacent flow guiding vanes more tortuous. As a result, when water flows from the central water area to the peripheral water area, the water flow will be guided to rotate, thus forming a swirling flow. This can not only accelerate the dispersion of bubbles into multiple small bubbles, but also accelerate the water flow, enabling the small bubbles to quickly discharge from the water surface before converging into large bubbles. Moreover, under the action of centrifugal force, the bubbles can also be accelerated to be thrown out of the water surface, improving the noise reduction effect. And the rotating water flow is more regular and orderly, which can not only effectively reduce the collision noise generated by the irregular water flow, but also accelerate the discharge of small bubbles from the water surface, preventing the bubbles from re-converging after leaving the flow guiding vanes.

[0023] 2. As a preferred embodiment of the present utility model, the first extension section and the second extension section are of an integrally formed structure. Along the radial direction of the flow guiding member, the distance between the two flow guiding vanes gradually increases. The flow guiding vanes are of a complete blade structure, extending from the central area of the flow guiding member to the periphery, and each flow guiding vane is arranged at intervals along the axial direction of the flow guiding member, so that the inner part of the flow guiding vane constitutes the first extension section, and the outer part constitutes the second extension section. Since the arc lengths corresponding to the same angle of circles with different radii are different, the distance between two adjacent flow guiding vanes gradually increases in the radial direction of the flow guiding member. The integrally formed flow guiding vanes are simpler and more convenient to process, saving production costs.

[0024] 3. As a preferred embodiment of the present utility model, in the radial direction of the flow guiding member, the flow guiding vanes are bent in the first direction; in the axial direction of the flow guiding member, the flow guiding vanes are bent in the second direction, and the second direction is the same as or opposite to the first direction. The flow guiding vanes are bent in both directions. The bending in the first direction can guide the water flow to rotate during the process of flowing from the center to the outside, thus forming a rotating water flow, while the bending in the second direction can guide the water flow to form a vortex. With the cooperation of these two rotating effects, a rotating vortex is formed in the water flow below the flow guiding member. On the one hand, it improves the extrusion and crushing effect on the bubbles, makes the water flow swirl orderly, reduces the noise generated by bubble rupture and water flow collision, and on the other hand, it can accelerate the cold and hot water exchange in the water storage cavity, making the heat distribution in the water storage cavity more uniform and improving the heating uniformity of the inner tank. Among them, when the first direction and the second direction are the same, it can promote the formation of the rotating vortex and shorten the formation time of the rotating vortex. When the first direction and the second direction are opposite, it can better disturb the water flow, increase the extrusion force between multiple water flows when forming the rotating vortex, and thus accelerate the bubble rupture.

[0025] 4. As a preferred embodiment of the present utility model, the bending angle of the first extension section towards the second direction is smaller than that of the second extension section towards the second direction. The first extension section corresponds to the water area in the central region below the flow guide member. Its bending angle towards the second direction is relatively small, and the guiding effect on the water flow is relatively poor. Since the boiling of the water flow in this water area is more intense and there are relatively irregular tumbling and flowing, reducing the bending angle of the first extension section can avoid making the water flow more irregular while ensuring the effect of dispersing bubbles. For the second extension section corresponding to the peripheral water area, the bending angle is larger. Since the water flow in this water area is relatively gentle, the guiding effect of the second extension section can be improved to accelerate the formation of an orderly rotating eddy current of the water flow.

[0026] 5. As a preferred embodiment of the present utility model, a bubble blocking portion protruding upwards is provided at the edge of the flow guide member. Due to the blocking of the bubble blocking portion, bubbles and steam will not enter the water area at the center below the inner tank when reaching the water area above the flow guide member, thereby reducing the situation where a large number of bubbles accumulate in the inner side area at the bottom of the inner tank, greatly reducing the vibration of the inner tank caused by the pushing of bubbles and steam and the water flow convection between the central and peripheral areas of the inner tank, thus effectively reducing the noise generated during cooking and improving the use experience. Description of the Drawings

[0027] The drawings described herein are used to provide a further understanding of the present utility model, and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0028] Figure 1 It is a cross-sectional view of an electric slow cooker under an embodiment of the present utility model;

[0029] Figure 2 It is a cross-sectional view of the inner tank and the flow guide member under an embodiment of the present utility model;

[0030] Figure 3 It is a front view of the inner tank and the flow guide member under an embodiment of the present utility model;

[0031] Figure 4 It is a structural schematic diagram of the flow guide member under an embodiment of the present utility model;

[0032] Figure 5 It is Figure 4 The bottom view of the flow guide member in

[0033] Figure 6 It is a front view of the flow guide member under an embodiment of the present utility model;

[0034] Figure 7 It isFigure 6 Cross-sectional view of the middle flow guide member;

[0035] Figure 8 Schematic structural diagram of the flow guide member under another embodiment of the present invention.

[0036] Wherein:

[0037] 1 outer pot; 11 water storage cavity; 12 water storage space;

[0038] 2 inner pot; 21 flow gap;

[0039] 3 flow guide member; 31 flow guide vane; 311 first extension section; 312 second extension section; 313 first flow passage gap; 314 second flow passage gap; 32 flow guide transition surface; 33 mating concave surface; 34 disk body; 35 water flow gap; 36 bubble blocking portion;

[0040] 4 heating device. Specific embodiments

[0041] In order to more clearly illustrate the overall concept of the present invention, the following will be described in detail by way of examples in conjunction with the accompanying drawings of the specification.

[0042] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0043] In addition, in the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0044] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean 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 terms such as "embodiment", "example", "an example", "example" or "specific example" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic description 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 a suitable manner in any one or more embodiments or examples.

[0046] As Figure 1 , Figure 4 shown, an electric slow cooker includes an outer pot 1 having a water storage cavity 11 and an inner pot 2 placed in the water storage cavity 11. A heating device 4 is provided below the inner pot 2. The electric slow cooker further includes a flow guiding member 3 disposed between the inner pot 2 and the heating device 4. A plurality of flow guiding vanes 31 are provided on one side of the flow guiding member 3 facing the bottom wall of the water storage cavity 11. The flow guiding vanes 31 are arranged at intervals along the circumferential direction of the water storage cavity 11. The flow guiding vanes 31 are bent around the axis of the flow guiding member 3. Along the radial direction of the flow guiding member 3, the flow guiding vane 31 includes a first extension section 311 and a second extension section 312 located outside the first extension section 311. A first flow passage gap 313 is provided between adjacent first extension sections 311, and a second flow passage gap 314 is provided between adjacent second extension sections 312. The first flow passage gap 313 is smaller than the second flow passage gap 314.

[0047] Preferably, the heating device 4 is coaxially arranged with the inner pot 2. The heating device 4 is at least located in the central water area below the flow guiding member 3, or the heating area of the heating device 4 can be increased so that it simultaneously heats the central water area and the peripheral water area below the flow guiding member 3. That is, the heating device 4 corresponds to the first extension section 311, or the heating device 4 corresponds to the first extension section 311 and the second extension section 312.

[0048] In the present utility model, a flow guiding vane 31 is provided on the lower side of a flow guiding member 3 between an inner container 2 and a heating device 4. The flow guiding vane 31 sequentially includes a first extension section 311 and a second extension section 312 from the inside to the outside in the radial direction, so that the flow guiding vane 31 completely covers the central water area and the peripheral water area below the flow guiding member 3. Whether the bubbles are in the central water area or the peripheral water area, they can be squeezed by the flow guiding vane 31 and thus burst. Therefore, during the process from the generation of the bubbles to reaching above the flow guiding member 3, the flow guiding vane 31 can play a role in decomposing the bubbles and inhibiting the generation of bubbles. Thus, the acting time of the flow guiding vane 31 is prolonged, and the bubble breaking effect is improved. At the same time, a first flow passage gap 313 between adjacent first extension sections 311 is smaller than a second flow passage gap 314 between adjacent second extension sections 312, so that the structure of the flow guiding vane 31 conforms to the flow paths of the water flow and the bubbles. During the heating process, the heat of the heating device 4 is concentrated in the central water area below the flow guiding member 3. Therefore, the water boils more violently here, and the bubbles are concentratedly generated. Then, the water flow with a higher temperature carries the bubbles and spreads around to flow into the peripheral water area. The flow passage gap of the corresponding first extension section 311 is smaller, and the blades are distributed more densely. Thus, the diversion of the water flow and the extrusion effect on the bubbles can be improved, so that the bubbles are more dispersed and cannot gather into larger bubbles. As the water flow and the bubbles flow to the water area corresponding to the second extension section 312 on the outside, the second flow passage gap 314 is larger. On the basis of ensuring the dispersion and inhibition of the bubbles, the guiding effect on the water flow is improved, and the water flow generates a swirl.

[0049] In addition, the flow guiding vane 31 is bent, so that the flow passage between adjacent two flow guiding vanes 31 is more tortuous. Furthermore, during the process of the water flow flowing from the central water area to the peripheral water area, the water flow will be guided to rotate to form a swirl, which can not only accelerate the dispersion of the bubbles into multiple small bubbles, but also accelerate the flow of the water flow, so that the small bubbles are quickly discharged out of the water surface before converging into larger bubbles, and can also be accelerated to be thrown out of the water surface under the action of the centrifugal force, improving the noise reduction effect. And the rotating water flow is more regular and orderly, which can not only effectively reduce the collision sound generated by the irregular flow of the water flow, but also accelerate the discharge of the small bubbles out of the water surface, and avoid the re-convergence of the bubbles after leaving the flow guiding vane 31.

[0050] Preferably, as Figure 4 shown, the flow guiding member 3 is in an overall disc shape, and the flow guiding member 3 further includes a disc body 34. The first extension section 311 and the second extension section 312 are both formed or fixed on the lower side of the disc body 34. Of course, the flow guiding member 3 can also be in other shapes, such as square, polygon, etc., which are not limited herein. It should be noted that the present utility model does not limit the forming manner of the first extension section 311 and the second extension section 312, and it can be one of the following implementation manners:

[0051] Embodiment 1: In this embodiment, asFigure 4 , Figure 5 , Figure 6 As shown in Figure 6 , the first extension section 311 and the second extension section 312 are integrally formed structures, and the distance between two adjacent flow guiding vanes 31 gradually increases along the radial direction of the flow guiding member 3.

[0052] The flow guiding vane 31 is a complete vane structure, which extends radially from the central area of the flow guiding member 3 to the periphery, and the flow guiding vanes 31 are arranged at intervals along the axial direction of the flow guiding member 3, so that the inner part of the flow guiding vane 31 constitutes the first extension section 311, and the outer part constitutes the second extension section 312. The arc lengths corresponding to the same angle of circles with different radii are different. Therefore, along the radial direction of the flow guiding member 3, the distance between two adjacent flow guiding vanes 31 gradually increases. The integrally formed flow guiding vane 31 is simpler and more convenient to process, saving production costs.

[0053] Embodiment 2: In this embodiment, the first extension section 311 and the second extension section 312 are split structures.

[0054] In this embodiment, the first extension section 311 and the second extension section 312 are two independent groups of vanes. The first extension section 311 is arranged on the inner ring of the disc body 34, and the second extension section 312 is arranged on the outer ring of the disc body 34, so that the positions of the first extension section 311 and the second extension section 312 can be set more flexibly.

[0055] Furthermore, along the radial direction of the flow guiding member 3, the first flow passage gap 313 and the second flow passage gap 314 are arranged corresponding to or offset from each other.

[0056] Among them, when the first flow passage gap 313 and the second flow passage gap 314 are arranged corresponding to each other along the radial direction of the flow guiding member 3, when the water flow in the first flow passage gap flows outward, it can directly enter the second flow passage gap 314, thereby reducing the obstruction of the flow guiding vane 31 to the water flow, accelerating the heat exchange between cold and hot water flows, and enabling the hot water to surge above the flow guiding member 3, improving the heating efficiency and heating uniformity.

[0057] When the first flow passage gap 313 and the second flow passage gap 314 are arranged offset from each other along the radial direction of the flow guiding member 3, when the water flow in the first flow passage gap flows outward, it will be blocked by the second extension section 312. After the second extension section 312 shunts the water flow flowing out of the first flow passage gap 313, the two water flows respectively enter the second flow passage gaps 314 on both sides. This process can improve the cutting and dispersion effects on the bubbles in the water, disperse the large bubbles into small bubbles, and accelerate the premature rupture of the small bubbles, thereby improving the noise reduction effect.

[0058] It should be noted that in this embodiment, in the radial direction of the flow guide member 3, the first extension section 311 and the second extension section 312 can be arranged adjacent to each other, that is, when the water flows from the center to the surroundings, after flowing out from the first flow-through gap 313, it directly reaches the second extension section 312 and enters the second flow-through gap 314. Of course, the first extension section 311 and the second extension section 312 can also be arranged at intervals, that is, there is a slow-flow area between them. After the water flows out from the first extension section 311, it enters the slow-flow area and continues to flow outward for a certain distance before reaching the second extension section 312 and entering the second flow-through gap 314.

[0059] As a preferred embodiment of the present invention, as Figure 4 、 Figure 6 shown, in the radial direction of the flow guide member 3, the flow guide vane 31 is bent towards the first direction; in the axial direction of the flow guide member 3, the flow guide vane 31 is bent towards the second direction, and the second direction is the same as or opposite to the first direction.

[0060] The flow guide vane 31 is bent in both directions. The bending in the first direction can guide the water to rotate during the process of flowing from the center to the outside, thereby forming a rotating water flow, while the bending in the second direction can guide the water to form a vortex. With the cooperation of these two rotating effects, the water flow below the flow guide member 3 forms a rotating vortex. On the one hand, it improves the extrusion and crushing effect on the bubbles, and also makes the water flow swirl orderly, reducing the noise generated by the bubble rupture and the water flow collision. On the other hand, it can accelerate the cold and hot water exchange in the water storage cavity 11, make the heat distribution in the water storage cavity 11 more uniform, and improve the heating uniformity of the inner liner 2.

[0061] Among them, when the first direction and the second direction are the same, it can promote the formation of the rotating vortex and shorten the formation time of the rotating vortex. When the first direction and the second direction are opposite, it can better disturb the water flow, improve the extrusion force between multiple water flows when forming the rotating vortex, and thus accelerate the bubble rupture.

[0062] For example, in a specific embodiment, as Figure 5 shown, both the first direction and the second direction are the clockwise direction, that is, Figure 5 in the bottom view shown in Figure 4 the flow guide vane 31 bends and extends in the clockwise direction from the inside to the outside, and

[0063] in the structural schematic diagram shown in Figure 4 、 Figure 6 shown, the flow guide vane 31 also bends and extends in the clockwise direction from the bottom to the top. Of course, the determination of the first direction and the second direction can be different according to the selection of the perspective and direction.

[0064] The first extension section 311 corresponds to the water area in the central region below the flow guide member 3. Its bending angle towards the second direction is relatively small, and the guiding effect on the water flow is relatively poor. Since the boiling of the water flow in this water area is more intense and there are relatively irregular tumbling and flowing, reducing the bending angle of the first extension section 311 can avoid the water flow becoming more irregular while ensuring the effect of dispersing bubbles. The second extension section 312 corresponding to the peripheral water area has a larger bending angle. Since the water flow in this water area is relatively gentle, the guiding effect of the second extension section 312 can be improved to accelerate the formation of an orderly rotating eddy current of the water flow.

[0065] Preferably, as Figure 4 shown, the bending angle of the flow guide vane 3 towards the second direction gradually increases from the inside to the outside.

[0066] In a preferred embodiment, as Figure 2 、 Figure 7 shown, one side of the flow guide member 3 facing the bottom wall of the water storage cavity 11 has a central region and an edge region surrounding the outer peripheral side of the central region. The position height of the central region is lower than the position height of the edge region to form a flow guiding transition surface 32 on the lower side of the flow guide member 3.

[0067] The hot water in the water area below the flow guide member 3 flows from the center to the periphery and enters the upper water area from the outer edge of the flow guide member 3. The setting of the flow guiding transition surface 32 can improve the guiding effect on the water flow in the water area below the flow guide member 3, making it flow outward along the flow guiding transition surface 32 and surge into the water area above the flow guide member 3.

[0068] Among them, the flow guide member 3 can be set to have a flat upper side structure, and only the flow guiding transition surface 32 is provided on the lower side to guide the water flow in the lower water area. As a preference, as Figure 2 、 Figure 7 、 Figure 8 shown, the center of the flow guide member 3 is set to sink relative to the inner tank 2 to form a flow guiding transition surface 32 on the lower side of the flow guide member 3 and a mating concave surface 33 on the upper side of the flow guide member 3. The gap between the central region of the bottom wall of the inner tank 2 and the mating concave surface 33 is larger than the gap between the edge region of the bottom wall of the inner tank 2 and the mating concave surface 33.

[0069] Since the flow guide member 3 is bent upward from the center to the periphery as a whole, both the upper and lower surfaces of the flow guide member 3 are curved surfaces with the center lower and the periphery higher, so that the water flow on both the upper and lower sides can be guided. The water in the water area above the flow guide member 3 can flow towards the center under the guidance of the mating concave surface 33, thereby accelerating the convection of the inner and outer water, making the heat distribution more uniform inside and outside, and improving the heating uniformity of the inner tank 2.

[0070] In addition, since the gap between the edge area of the bottom wall of the inner container 2 and the mating concave surface 33 is small, the water pressure here is high. Therefore, it is more difficult for the upwardly surging bubbles on the outer side to reach the center below the inner container 2 through this gap, avoiding the collision of the bubbles with the center of the bottom of the inner container 2 and causing the inner container 2 to shake. At the same time, the water flow at the center of the bottom of the inner container 2 can flow outward under the action of the overall swirl, and then exchange heat with the water in the outer water area, improving the heat exchange efficiency.

[0071] Preferably, as Figure 2 , Figure 7 shown, both the flow guiding transition surface 32 and the mating concave surface 33 are arc surfaces. Of course, the two can also be inclined surfaces, or irregular curved surfaces, etc., as long as they can guide the water flow, and no limitation is made here.

[0072] It should be noted that the present utility model does not limit the positional relationship between the inner container 2 and the flow guiding member 3, and it can be one of the following embodiments:

[0073] Embodiment 1: As Figure 2 shown, there is a flow gap 21 between the bottom of the inner container 2 and the flow guiding member 3. So that the water area outside the bottom of the inner container 2 and the water area at the center of the bottom are connected, and the water flow can freely flow between the two water areas, thereby accelerating the cold and hot water exchange and making the heat distribution more uniform.

[0074] In an embodiment of this embodiment, a support structure is provided on the rim of the outer pot 1 or the side wall of the water storage cavity 11, and the inner container 2 is placed on the support structure so that a flow gap 21 is formed between the bottom wall of the inner container 2 and the flow guiding member 3.

[0075] In another embodiment of this embodiment, a support rib is provided between the bottom wall of the inner container 2 and the flow guiding member 3, and the inner container 2 is placed on the support rib so that a flow gap 21 is formed between the bottom wall of the inner container 2 and the flow guiding member 3. In this embodiment, as Figure 1 shown, the support rib can be provided on the bottom wall of the inner container 2 and protrude downward to abut against the flow guiding member 3 to form a support. It can also be provided on the upper surface of the flow guiding member 3 and protrude upward for abutting and supporting the bottom wall of the inner container 2.

[0076] Embodiment 2: In this embodiment, as Figure 3 shown, the bottom of the inner container 2 is in contact with the flow guiding member 3. So that it is more difficult for the water flow above the flow guiding member 3 to reach the center of the bottom of the inner container 2, and it can only flow on the outer peripheral side of the inner container 2. Furthermore, the situation where a large number of bubbles gather in the inner area of the bottom of the inner container 2 is reduced, and the situation where the inner container 2 vibrates due to the pushing of the bubbles and steam and the water flow convection between the center and the outer peripheral area of the inner container 2 is reduced, thereby effectively reducing the noise generated during cooking and improving the use experience.

[0077] Among them, the inner container 2 and the flow guide member 3 can be of a split structure. During use, the user places the inner container 2 on the flow guide member 3, and the flow guide member 3 supports the inner container 2 and contacts the bottom of the inner container 2. Of course, the inner container 2 and the flow guide member 3 can also be integrally formed, thereby reducing the number of components of the electric slow cooker.

[0078] Preferably, as Figure 1 shown, there is a water flow gap 35 between the outer peripheral side of the flow guide member 3 and the side wall of the water storage cavity 11, and there is a water storage space 12 between the side wall of the inner container 2 and the water storage cavity 11. The projection of the water flow gap 35 upward is located within the water storage space 12.

[0079] The water flow gap 35 is provided corresponding to the water storage space 12, so that the water and bubbles below the flow guide member 3 directly rush upward into the water storage space 12 after reaching the upper water area of the flow guide member 3. Therefore, during the rising process of the bubbles and steam, they will not directly impact the bottom of the inner container 2, and thus the inner container 2 will not vibrate.

[0080] Furthermore, as Figure 2 、 Figure 8 shown, a bubble blocking portion 36 protruding upward is provided at the edge of the flow guide member 3.

[0081] Due to the blocking of the bubble blocking portion 36, it is difficult for the bubbles and steam to enter the water area at the center below the inner container 2 when reaching the upper water area of the flow guide member 3. Furthermore, the situation where a large number of bubbles accumulate in the inner area at the bottom of the inner container 2 is reduced, and the situation where the inner container 2 vibrates due to the pushing of the bubbles and steam and the water flow convection between the center and the outer peripheral area of the inner container 2 is greatly reduced, thereby effectively reducing the noise generated during cooking and improving the use experience. However, the bubble blocking portion 36 does not completely isolate the central water area and the outer water area below the inner container 2, and the water flow can still occur convective heat transfer between the two sides. For example, the two water areas communicate above the bubble blocking portion 36. Since the kinetic energy of the bubbles is reduced at this time, it is more difficult to converge at the bottom of the inner container 2 and no large noise will be generated.

[0082] What is not described in the present utility model can be realized by adopting or referring to the existing technology.

[0083] Each embodiment in this specification is described in a progressive manner. The same or similar parts between the embodiments can be referred to each other, and the key points of each embodiment are the differences from other embodiments.

[0084] The above are only the embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.

Claims

1. An electric slow cooker, comprising an outer pot having a water storage cavity and an inner pot placed in the water storage cavity, a heating device being arranged below the inner pot, and characterized in that, the electric slow cooker further comprises a flow guiding member arranged between the inner pot and the heating device, a plurality of flow guiding vanes being arranged on a side of the flow guiding member facing the bottom wall of the water storage cavity, the flow guiding vanes being arranged at intervals along the circumferential direction of the water storage cavity, the flow guiding vanes being bent around the axis of the flow guiding member; in the radial direction of the flow guiding member, the flow guiding vane comprises a first extension section and a second extension section located outside the first extension section, a first flow passage gap being formed between adjacent first extension sections, a second flow passage gap being formed between adjacent second extension sections, and the first flow passage gap being smaller than the second flow passage gap.

2. The electric slow cooker according to claim 1, characterized in that, the first extension section and the second extension section are of an integrally formed structure, and the distance between adjacent two of the flow guiding vanes gradually increases along the radial direction of the flow guiding member.

3. The electric slow cooker according to claim 1, characterized in that, the first extension section and the second extension section are of a split structure, and the first flow passage gap and the second flow passage gap are arranged corresponding to or offset from each other along the radial direction of the flow guiding member.

4. The electric slow cooker according to claim 1, characterized in that, in the radial direction of the flow guiding member, the flow guiding vane is bent in a first direction; in the axial direction of the flow guiding member, the flow guiding vane is bent in a second direction, and the second direction is the same as or opposite to the first direction.

5. The electric slow cooker according to claim 4, characterized in that, the bending angle of the first extension section in the second direction is smaller than the bending angle of the second extension section in the second direction.

6. The electric slow cooker according to claim 1, characterized in that, a side of the flow guiding member facing the bottom wall of the water storage cavity has a central region and an edge region surrounding the outer periphery of the central region, and the position height of the central region is lower than the position height of the edge region, so as to form a flow guiding transition surface on the lower side of the flow guiding member.

7. The electric slow cooker according to claim 6, characterized in that, the center of the flow guiding member is sunken relative to the inner pot, so as to form the flow guiding transition surface on the lower side of the flow guiding member and a mating concave surface on the upper side of the flow guiding member, and the gap between the central region of the bottom wall of the inner pot and the mating concave surface is greater than the gap between the edge region of the bottom wall of the inner pot and the mating concave surface.

8. The electric slow cooker according to claim 1, characterized in that, a support structure is arranged at the rim of the outer pot or the side wall of the water storage cavity, and the inner pot is placed on the support structure, so that a flow gap is formed between the bottom wall of the inner pot and the flow guiding member; or, support ribs are arranged between the bottom wall of the inner pot and the flow guiding member, and the inner pot is placed on the support ribs, so that a flow gap is formed between the bottom wall of the inner pot and the flow guiding member.

9. The electric slow cooker according to claim 1, characterized in that, A water flow gap is formed between the outer peripheral side of the flow guide member and the side wall of the water storage cavity. A water storage space is formed between the side wall of the inner container and the water storage cavity. The projection of the water flow gap upward is located within the water storage space.

10. The electric slow cooker according to claim 9, wherein a bubble blocking portion protruding upward is provided at the edge of the flow guide member.

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