Nourishing stewing and instant-boiling pot and use method thereof

Abstract

The invention belongs to the technical field of catering cookware, and particularly relates to a nourishing stewing and instant-boiling pot and a using method thereof.The pot is structurally provided with a heat gathering ring, a heat gathering cavity, a heat gathering cover, a heat transfer rod and a siphon structure, integration of a hot pot and stewing and soup cooking cookware is achieved, and meanwhile the heat energy utilization efficiency can be remarkably improved; the principle of a siphon structure and the design of a heat collecting structure are utilized, so that a remarkable liquid level difference is formed between a heating area and a stewing area during heating, and stable water flow circulation is formed during heat preservation; by arranging the bottom plate and the horizontal section of the heat gathering cover, the double isolation effect of food materials and the heating area can be achieved, and the situation that the food materials enter the heating area to affect heating and the taste of the food materials is damaged due to overheating is avoided; the water adding mechanism is further arranged, through monitoring of the water level and design of the pot structure, scalding is avoided, cold water can be supplemented in time, the bottom end of the arc-shaped pipe extends to the position above the bottom plate, and the problem that food materials return to raw due to the cold water can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of catering cookware, and particularly relates to a nourishing stewing hot pot and a use method thereof. Background Art

[0002] The existing hot pot and the pot for stewing and boiling soup are independent of each other, and there is still a lack of pots that combine the two. In addition, the existing hot pot wastes a lot of heat energy, the water temperature during the shabu-shabu process is unstable, and the freshness of the ingredients cannot be guaranteed. Especially during the water adding process, the cold water added will cause the ingredients to become stale, which will significantly affect the taste of the food.

[0003] In addition, the commonly used hot pot is heated by adding carbon, which pollutes the environment. There is no boundary between the heating area and the eating area in the hot pot. The ingredients are easily close to the high-temperature heat source, which causes the ingredients to be unevenly heated due to close contact with the heating part, resulting in a significant reduction in the taste of the ingredients. Some inedible spices are also mixed in the water, which needs to be picked when eating, causing inconvenience in eating.

[0004] Furthermore, the existing hot pot has insufficient protective performance, and it is easy to accidentally injure the human body due to splashing boiling water. There is a lack of water level monitoring equipment, and its safety performance needs to be improved. Summary of the invention

[0005] The invention discloses a nourishing stewing hot pot and a use method thereof, aiming to solve the above-mentioned problems existing in the prior art.

[0006] To achieve the above object, the technical solution of the present invention is:

[0007] A nourishing stewing and hot pot, comprising a pot body, a pot cover, a heat collecting cover, a heat collecting ring, and a heat collecting cavity, wherein the top of the pot body is movably connected with the pot cover, and the middle part of the pot body is coaxially provided with a heat collecting cover, wherein the heat collecting cover comprises a conical cover body, the lower end edge of the cover body is folded outward to form a horizontal section, the edge of the horizontal section is folded upward to form a clamping section, the horizontal section is evenly distributed with a plurality of water permeable holes around the axis of the cover body, the clamping section is clamped with the lower part of the inner wall of the pot body and divides the inside of the pot body into a heating zone located inside the cover body and a stewing and hot pot zone located outside the cover body, and the A heat collecting cavity recessed into the pot body is provided at the bottom of the pot body opposite to the cover body, the top of the heat collecting cavity is detachably fixedly connected to the top wall of the heat collecting cover by a heat transfer rod, the top wall of the heat collecting cover is evenly distributed with a number of vents around the axis, a heat collecting ring is integrally connected to the bottom of the pot body where the periphery of the heat collecting cavity is located, the heat collecting ring is used to gather the heat source within the enclosed range, the heat collecting cover forms a siphon structure during heating, and the centralized heating of the water in the pot body is achieved through the coordinated cooperation of the heat collecting ring, the heat collecting cover, the heat collecting cavity, the heat transfer rod and the siphon structure.

[0008] Preferably, the top of the heat collecting hood is detachably connected to a heat insulation hood, and the top of the heat insulation hood is provided with an openable top cover; a heat transfer pipe is provided vertically downward in the middle of the top of the heat collecting hood, and the heat transfer pipe is provided with an internal thread, and a connecting hole is provided at the top of the heat collecting cavity, and a heat transfer rod passes through the connecting hole, and the top of the heat transfer rod is threadedly connected to the heat transfer pipe, and a spiral heat sink is provided on the outer wall of the heat transfer rod, and a limit block is provided at the bottom end of the heat transfer rod, and the top of the limit block is sealed and connected to the edge of the connecting hole through a sealing ring.

[0009] Preferably, the outer walls of the pot body and the pot cover are both provided with an interlayer of heat-insulating material, and handles one and two are provided on the pot body and the pot cover respectively. A first fitting hole is provided at the center of the pot cover, and a plurality of guide strips are distributed around the axis on the inner surface of the pot cover. When the pot cover is closed, the inner edge of the first fitting hole fits tightly with the outer wall of the heat-collecting hood.

[0010] Preferably, the pot body is also movably connected with a bottom plate, the bottom plate is made of a stainless steel mesh, a second fitting hole is provided at the center of the bottom plate, and a ring-shaped food box connected by a buckle is coaxially provided at the lower end of the bottom plate. When the bottom plate is installed in place, the second fitting hole fits tightly with the outer wall of the heat collecting cover and the outer edge of the bottom plate fits tightly with the inner edge of the pot body, the stainless steel mesh constitutes a first isolation structure for isolating food, and the horizontal section constitutes a second isolation structure for isolating food.

[0011] Preferably, the pot body is also provided with a water adding mechanism, which comprises an arc tube extending downward along the inner wall of the pot body, the lower end of the arc tube extends to the upper surface of the bottom plate, the upper end of the arc tube is provided with a connecting section folded outward, the connecting section passes through the through groove at the top of the outer wall of the pot body and is sealed and fixedly connected to the through groove, a flap is provided at the end of the connecting section away from the pot body, a water level alarm is provided on the flap, a water level sensor is provided at the bottom end of the arc tube, and the position of the lower end of the arc tube satisfies: avoiding interference with the installation of the bottom plate.

[0012] Preferably, metal material layers meeting food standards are provided on both the inner and outer sides of the thermal insulation material interlayer, and the surface of the metal material layer located on the inner side is processed by wire drawing.

[0013] Preferably, it also includes a heating device, which includes a base, a limiting ring is provided on the upper end of the base, the limiting ring is used to clamp the heat-collecting ring, a heating wire is provided on the inner side of the limiting ring, and a control panel is provided on one side of the base, and the heating wire is electrically connected to the power supply through the control panel.

[0014] A method for using a nourishing stew and hot pot, comprising a heating method and a heat preservation method. The heating method is as follows: when heating, the heat source is located within the range of a heat collection ring, the heat preservation cover is covered and the top cover is opened, the heat collection cavity and the heat transfer rod gather the heat energy of the heating zone at the central axis of the heating zone, due to the rising effect of the heat energy and the siphon structure of the cover body, the liquid level in the heating zone continues to rise, the water in the stew and hot pot zone continuously enters the heating zone, causing the liquid level to reach the lowest level, thereby achieving rapid heating in the heating zone; the heat preservation method is as follows: when the heating When the temperatures in the heating zone and the stewing zone reach equilibrium, the top cover is closed, the siphon structure is blocked, and the liquid level in the heating zone drops back until the liquid levels in the stewing zone and the heating zone are level. At this time, the heat energy drives the water flow to rise along the central axis of the heating zone and then diffuses to the inside of the stewing zone along the inner wall of the heat-collecting hood and the bottom of the inner side of the horizontal section. Since the liquid surface in the stewing zone dissipates heat quickly, the water with lower temperature in the stewing zone enters the heating zone from the outer edge of the horizontal section along the inner wall of the pot body, thus forming a water circulation, and achieving uniform heating of the stewing zone through the water circulation.

[0015] The beneficial effects of the nourishing stew hot pot and the use method of the present invention are:

[0016] The present invention realizes the integration of hot pot, stewing and soup-making pots, improves the functional applicability and reduces the cost of the pots that users need to purchase: the present invention can also significantly improve the efficiency of heat energy utilization, avoid heat energy waste, and evenly diffuse the heat energy during heating and heat preservation; the present invention is provided with a siphon structure that can be opened and closed, and the principle of the siphon structure and the design of the heat-collecting structure are used to form a significant liquid level difference between the heating zone and the stewing zone during heating, and to form a stable water flow circulation during heat preservation; the double isolation effect of the food and the heating zone can be achieved by arranging the horizontal sections of the bottom plate and the heat-collecting cover, so that the food can be prevented from entering the heating zone to affect the heating and destroying the taste of the food due to overheating; the present invention is also provided with a water-adding mechanism, which can avoid scalding by monitoring the water level and designing the pot structure, and can replenish cold water in time, and the bottom end of the arc tube extends above the bottom plate, which can avoid the problem of cold water causing the food to regenerate, thereby ensuring a good taste when eaten; the food box of the present invention can store inedible spices separately, further improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the top view of the heat collecting cover of the present invention.

[0020] Figure 4 It is a front view structural schematic diagram of the heat collecting cover of the present invention.

[0021] Figure 5 It is a schematic diagram of the top view of the bottom plate of the present invention.

[0022] Figure 6 It is a front view structural schematic diagram of the base plate of the present invention.

[0023] Figure 7 It is a schematic diagram of the bottom structure of the pot body of the present invention.

[0024] Figure 8 It is a schematic diagram of the structure of the pot cover of the present invention when viewed from above.

[0025] Fig. 9 It is a schematic diagram of the top view of the pot cover of the present invention.

[0026] Fig.10 It is a structural schematic diagram of the installation of the heating mechanism of the present invention.

[0027] Fig.11 It is a structural schematic diagram of adding water to the water adding mechanism through a funnel in the present invention.

[0028] Fig.12 It is a schematic diagram of the top structure of the heating device of the present invention.

[0029] Fig.13 It is the principle diagram of the present invention during heating.

[0030] Fig.14 It is the principle diagram of the heat preservation of the present invention.

[0031] 01. Heating zone; 02. Stewing zone; 03. Water flow direction; 1. Pot body; 101. Connecting hole; 2. Pot cover; 201. Guide strip; 202. First fitting hole; 3. Insulation cover; 4. Heat collecting ring; 5. Handle one; 6. Handle two; 7. Heat collecting cover; 71. Heat transfer tube; 72. Water permeable hole; 73. Top wall of heat collecting cover; 731. Air vent; 74. Cover body; 75. Horizontal section; 8. Heat collecting cavity; 9. Heat transfer rod; 10. Food box; 11. Bottom plate; 111. Buckle; 12. Water adding mechanism; 121. Flip cover; 13. Water level alarm; 14. Funnel; 15. Heating device; 151. Heating wire; 152. Limiting ring; 153. Control panel. DETAILED DESCRIPTION

[0032] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0033] The following embodiments may be understood as individually expressing a part of a local structure or method of the present invention, or may be understood as a combination of the embodiments to explain the connotation of a larger structure or method of the present invention.

[0034] Example 1

[0035] A nourishing stew like Figure 1-14 As shown, it includes a pot body 1, a pot cover 2, a heat collecting cover 7, a heat collecting ring 4, and a heat collecting chamber 8. The top of the pot body 1 is movably connected to the pot cover 2, and the middle part of the pot body 1 is coaxially provided with a heat collecting cover 7, and the heat collecting cover 7 includes a conical cover body 74, and the lower end edge of the cover body 74 is folded outward to form a horizontal section 75, and the edge of the horizontal section 75 is folded upward to form a clamping section (not marked in the figure), and the horizontal section 75 is evenly distributed with a plurality of water permeable holes 72 around the axis of the cover body 74. The clamping section is clamped with the lower part of the inner wall of the pot body 1 and divides the inside of the pot body 1 into a heating zone 01 located inside the cover body 74 and a stewing zone 02 located outside the cover body 74. Area 02, a heat collecting cavity 8 recessed into the interior of the pot body is provided at the bottom of the pot body 1 opposite to the cover body 74, the top of the heat collecting cavity 8 is detachably fixedly connected to the heat collecting cover top wall 73 through a heat transfer rod 9, a plurality of vents 731 are evenly distributed around the axis of the heat collecting cover top wall 73, a heat collecting ring 4 is integrally connected to the bottom of the pot body 1 where the periphery of the heat collecting cavity 8 is located, the heat collecting ring 4 is used to gather the heat source within the enclosed range, the heat collecting cover 7 forms a siphon structure during heating, and the centralized heating of the water in the pot body is achieved through the coordinated cooperation of the heat collecting ring 4, the heat collecting cover 7, the heat collecting cavity 8, the heat transfer rod 9 and the siphon structure.

[0036] In this embodiment, the heat energy of conventional hot pot equipment diffuses from the bottom or the middle into the water body, and a good water circulation cannot be formed. However, the present invention, by providing a siphon structure, can form a stable water circulation between the heating area and the stewing area, thereby achieving rapid heating while ensuring that the water temperature is evenly increased. By providing a heat collecting ring 4, a heat collecting cover 7, a heat collecting cavity 8, and a heat transfer rod 9, heat energy waste can be avoided and heating efficiency can be improved.

[0037] Example 2

[0038] like Figure 1 , 2As shown, the top of the heat collecting cover 7 is detachably connected to the heat preservation cover 3, and the top of the heat preservation cover 3 is provided with an openable top cover (not shown in the figure); a heat transfer pipe 71 is provided vertically downward in the middle of the top of the heat collecting cover 7, and the heat transfer pipe 71 is provided with an internal thread. The top of the heat collecting chamber 8 is provided with a connecting hole 101, and a heat transfer rod 9 is passed through the connecting hole. The top of the heat transfer rod 9 is screwed with the heat transfer pipe 71, and the outer wall of the heat transfer rod 9 is provided with a spiral heat sink (not marked in the figure, and its size can be set according to needs). The bottom of the heat transfer rod 71 is provided with a limit block (not marked in the figure), and the top of the limit block is sealed and connected to the edge of the connecting hole through a sealing ring. The arrangement of the heat transfer rod and the heat transfer pipe, on the one hand, ensures the fixed connection between the heat collecting cover and the pot body, and on the other hand, plays a role in accelerating heat dissipation at the central axis position of the heating zone, and cooperates with the heat collecting chamber to make the heat energy mainly concentrated at the central axis of the heating zone.

[0039] Example 3

[0040] like Figure 1 , 2 As shown, the outer walls of the pot body 1 and the pot cover 2 are provided with an interlayer of heat-insulating material (a commonly used structure, not shown in the figure, for further reducing heat energy waste), a handle 1 5 and a handle 2 6 are provided on the pot body 1 and the pot cover 2 respectively, a first fitting hole 202 is provided at the center of the pot cover 2, and a plurality of guide strips 201 are distributed around the axis on the inner surface of the pot cover. When the pot cover 2 is closed, the inner edge of the first fitting hole 202 is tightly fitted with the outer wall of the heat collecting cover 7.

[0041] Example 4

[0042] like Figure 2 , 5 As shown in , 6, the pot body 1 is also movably connected with a bottom plate 11, and the bottom plate 11 is made of a stainless steel mesh. A second fitting hole (not marked in the figure) is provided at the center of the bottom plate 11, and a ring-shaped food box 10 connected by a buckle 111 is coaxially provided at the lower end of the bottom plate 11. When the bottom plate 11 is installed in place, the second fitting hole is tightly fitted with the outer wall of the heat collecting cover 7 and the outer edge of the bottom plate 11 is tightly fitted with the inner edge of the pot body 2. The stainless steel mesh constitutes a first isolation structure for isolating food, and the horizontal section constitutes a second isolation structure for isolating food.

[0043] Example 5

[0044] like Figure 2 , 10 As shown in FIG. 11 , the pot body 2 is further provided with a water adding mechanism 12, which comprises an arc-shaped tube extending downwardly along the inner wall of the pot body (see FIG. Fig.10), the lower end of the arc tube extends to the upper surface of the bottom plate 11, the upper end of the arc tube is provided with a connecting section folded outward, the connecting section passes through the through groove on the top of the outer wall of the pot body 2 and is sealed and fixedly connected to the through groove, the end of the connecting section away from the pot body is provided with a flip cover 121, the flip cover is provided with a water level alarm 13 (for alarming when the water level exceeds the upper limit), the bottom end of the arc tube is provided with a water level sensor (which is a common technology, not shown in the figure, for alarming when the water level is lower than the lower limit), the position of the lower end of the arc tube satisfies: avoiding interference with the installation of the bottom plate 11, because the bottom plate is made of stainless steel mesh and has a certain elasticity, it generally does not cause interference.

[0045] Example 6

[0046] like Figure 1 , 2 As shown, metal material layers (such as copper) that meet food standards are provided on both the inside and outside of the thermal insulation material interlayer. The surface of the metal material layer on the inside is treated with a wire drawing process, which can accelerate heat transfer and uniformly distribute heat energy, thereby improving heat energy utilization.

[0047] Example 7

[0048] like Fig.12 As shown, it also includes a heating device 15, which includes a base. A limiting ring 152 is provided at the upper end of the base. The limiting ring 152 is used to clamp the heat-collecting ring 4 (that is, the heat-collecting ring can be clamped on the outer edge or inner edge of the limiting ring). A heating wire 151 is provided on the inner side of the limiting ring 152, and a control panel 153 is provided on one side of the base. The heating wire 151 is electrically connected to the power supply through the control panel 153.

[0049] This embodiment provides a heating device compatible with the present invention, but it should be noted that the heating method of the present invention is not the only one, for example, heating can also be performed using gas.

[0050] Example 8

[0051] Based on the above embodiments, this embodiment discloses a method for using a nourishing stew hot pot, such as Fig.13 , 14As shown, the invention comprises a heating method and a heat preservation method. The heating method is as follows: when heating, the heat source is located within the range of the heat collection ring 4, the heat preservation cover 3 is covered and the top cover is opened, the heat collection cavity 8 and the heat transfer rod 9 gather the heat energy of the heating zone to the central axis of the heating zone 01, due to the rising effect of the heat energy and the siphon structure of the cover body, the liquid level in the heating zone continues to rise, the water in the stewing zone continuously enters the heating zone, causing the liquid level to reach the lowest level, thereby achieving rapid heating in the heating zone; the heat preservation method is as follows: when the heating zone and the stewing zone are When the temperatures between them reach equilibrium, the top cover is covered, the siphon structure is blocked, and the liquid level in the heating zone drops back until the liquid levels in the stewing and shabu-shabu zones are level. At this time, the heat energy drives the water flow to rise along the central axis of the heating zone and then diffuses toward the inside of the stewing and shabu-shabu zone 02 along the inner wall of the heat collecting hood 7 and the bottom of the inner side of the horizontal section. Since the liquid surface in the stewing and shabu-shabu zone dissipates heat quickly, the water with a lower temperature in the stewing and shabu-shabu zone 02 enters the heating zone from the outer edge of the horizontal section along the inner wall of the pot body, thus forming a water flow circulation, and uniform heating of the stewing and shabu-shabu zone is achieved through the water flow circulation.

Claims

1. A nourishing stew hot pot, characterized by: The invention comprises a pot body, a pot cover, a heat collecting cover, a heat collecting ring and a heat collecting cavity. The pot cover is movably connected to the top of the pot body, and a heat collecting cover is coaxially arranged in the middle of the pot body. The heat collecting cover comprises a conical cover body, and the lower end edge of the cover body is folded outward to form a horizontal section, and the edge of the horizontal section is folded upward to form a clamping section. The horizontal section is evenly distributed with a plurality of water permeable holes around the axis of the cover body. The clamping section is clamped with the lower part of the inner wall of the pot body and divides the inside of the pot body into a heating zone located inside the cover body and a stewing zone located outside the cover body. The lower part of the cover body A heat collecting cavity recessed into the pot body is provided at the bottom of the pot body, the top of the heat collecting cavity is detachably fixedly connected to the top wall of the heat collecting cover by a heat transfer rod, the top wall of the heat collecting cover is evenly distributed with a number of vents around the axis, a heat collecting ring is integrally connected to the bottom of the pot body where the periphery of the heat collecting cavity is located, the heat collecting ring is used to gather the heat source within the enclosed range, the heat collecting cover forms a siphon structure during heating, and the centralized heating of the water in the pot body is achieved through the coordinated cooperation of the heat collecting ring, the heat collecting cover, the heat collecting cavity, the heat transfer rod and the siphon structure.

2. A nourishing stew hot pot as claimed in claim 1, characterized in that: The top of the heat collecting hood is detachably connected to a heat preservation hood, and the top of the heat preservation hood is provided with an openable top cover; a heat transfer pipe is vertically downwardly provided in the middle of the top of the heat collecting hood, and the heat transfer pipe is provided with an internal thread; a connecting hole is provided at the top of the heat collecting cavity, and a heat transfer rod passes through the connecting hole; the top of the heat transfer rod is screwed to the heat transfer pipe, and a spiral heat sink is provided on the outer wall of the heat transfer rod, and a limit block is provided at the bottom of the heat transfer rod, and the top of the limit block is sealed and connected to the edge of the connecting hole through a sealing ring.

3. A nourishing stew hot pot as claimed in claim 2, characterized in that: The outer walls of the pot body and the pot cover are both provided with an interlayer of heat-insulating material, and a first handle and a second handle are respectively provided on the pot body and the pot cover. A first fitting hole is provided at the center of the pot cover, and a plurality of guide strips are distributed around the axis on the inner surface of the pot cover. When the pot cover is closed, the inner edge of the first fitting hole is tightly fitted with the outer wall of the heat-collecting cover.

4. A nourishing stew hot pot as claimed in claim 3, characterized in that: The pot body is also movably connected with a bottom plate, which is made of a stainless steel mesh. A second fitting hole is provided at the center of the bottom plate, and a ring-shaped food box connected by a buckle is coaxially provided at the lower end of the bottom plate. When the bottom plate is installed in place, the second fitting hole fits tightly with the outer wall of the heat collecting cover and the outer edge of the bottom plate fits tightly with the inner edge of the pot body. The stainless steel mesh constitutes a first isolation structure for isolating food, and the horizontal section constitutes a second isolation structure for isolating food.

5. The nourishing hot pot as claimed in claim 4, characterized in that: The pot body is also provided with a water adding mechanism, which comprises an arc-shaped tube extending downward along the inner wall of the pot body, the lower end of the arc-shaped tube extending to the upper surface of the bottom plate, the upper end of the arc-shaped tube is provided with a connecting section folded outward, the connecting section passes through the through groove at the top of the outer wall of the pot body and is sealed and fixedly connected to the through groove, a flap is provided at the end of the connecting section away from the pot body, a water level alarm is provided on the flap, a water level sensor is provided at the bottom end of the arc-shaped tube, and the position of the lower end of the arc-shaped tube satisfies: avoiding interference with the installation of the bottom plate.

6. The nourishing hot pot as claimed in claim 5, characterized in that: Metal material layers meeting food standards are provided inside and outside the heat-insulating material interlayer, and the surface of the metal material layer located inside is processed by wire drawing.

7. A nourishing hot pot as claimed in claim 6, characterized in that: It also includes a heating device, which includes a base. A limiting ring is provided on the upper end of the base. The limiting ring is used to clamp the heat-collecting ring. A heating wire is provided on the inner side of the limiting ring. A control panel is provided on one side of the base. The heating wire is electrically connected to the power supply through the control panel.

8. The method for using the nourishing hot pot as claimed in claim 7, characterized in that: The invention comprises a heating method and a heat preservation method. The heating method comprises the following steps: during heating, the heat source is located within the range of the heat collection ring, the heat preservation cover is covered and the top cover is opened, the heat collection cavity and the heat transfer rod gather the heat energy of the heating zone at the central axis of the heating zone, the liquid level in the heating zone is continuously raised due to the rising effect of the heat energy and the siphon structure of the cover body, the water in the stewing zone continuously enters the heating zone, causing the liquid level to reach the lowest level, thereby realizing rapid heating in the heating zone; the heat preservation method comprises the following steps: when the temperature between the heating zone and the stewing zone reaches equilibrium, the top cover is covered, the siphon structure is blocked, the liquid level in the heating zone falls back, until the liquid levels in the stewing zone and the heating zone are level, at which time the heat energy drives the water flow to rise along the central axis of the heating zone and then diffuses to the inner side of the stewing zone along the inner wall of the heat collection cover and the bottom of the inner side of the horizontal section, since the heat dissipation of the liquid surface in the stewing zone is fast, the water with a lower temperature in the stewing zone enters the heating zone from the outer edge of the horizontal section along the inner wall of the pot body, thus forming a water flow circulation, and realizing uniform heating of the stewing zone through the water flow circulation.

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