Vacuum kettle

Abstract

The invention discloses a vacuum teakettle, belongs to the technical field of teakettles, and aims to solve the problems that according to a welding structure of an existing teakettle in the market, an inner container and an inner container bottom are generally welded, and after the inner container is heated to a certain temperature, the inner container bottom and the inner container are subjected to laser welding from the bottom or from the inner bottom of the inner container, so that in the production process of the teakettle, the production cost is low. Once the inner container deforms, the inner container is scrapped, the cost caused by scrapping is very high, a circle of the bottom of the inner container is provided with a large gap, the inner container is not attractive, the water boiling time is long, dirt is hidden, and the water leakage phenomenon can be worried about. The kettle comprises the kettle body, the inner container is fixed in the kettle body, the side face and the bottom of the inner container are integrally formed, the heating bottom plate is connected to the bottom of the inner container, the situation that a circle of gap is formed in the bottom of the inner container of a kettle generated in a traditional mode can be effectively avoided, the attractiveness of the kettle is improved, and the situations of dirt hiding and water leakage are avoided; and meanwhile, when the inner container is welded with the inner container bottom, the scrap cost is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of kettles, and in particular relates to a vacuum kettle. Background Art

[0002] The welding structure of the existing kettle is generally to weld the inner tank and the inner tank bottom. After the inner tank is heated to a certain temperature, the inner tank bottom and the inner tank are laser welded from the bottom or from the inner bottom of the inner tank. This will cause the inner tank to be scrapped once the inner tank is deformed during the production process of the kettle. The cost caused by the scrapping is very high. At the same time, the existing kettle has an inner tank that is integrally formed, and the inner tank and the heating base are separated. After the inner tank bottom is welded, the heating base is welded to the bottom surface of the inner tank bottom. This will cause a large gap around the bottom of the inner tank, which is not beautiful. Secondly, after boiling water for a long time, dirt and grime will accumulate, and there is also a worry about leakage.

[0003] Therefore, a vacuum kettle is needed to solve the problems in the prior art that the inner tank is easily deformed and scrapped during welding, which increases the welding cost, and there is a large gap around the bottom of the inner tank, which is not beautiful, and secondly, it will accumulate dirt and grime after boiling water for a long time, and there is also the worry of water leakage. Summary of the invention

[0004] The object of the present invention is to provide a vacuum kettle to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vacuum kettle, comprising a kettle body, an inner liner fixed inside the kettle body, the side surface and the bottom of the inner liner are integrally formed, a placement bottom plate is fixed to the bottom of the kettle body, a fixed arc plate is fixed inside the placement bottom plate, the fixed arc plate, the placement bottom plate and the kettle body are an integrally formed structure, the top of the placement bottom plate is fixed to the bottom surface of the inner liner, a heating bottom plate is fixed to the bottom surface of the inner liner, a coupler is fixed to the bottom surface of the heating bottom plate, the coupler is fixed to the bottom of the kettle body, a kettle lid is detachably connected to the top of the inner liner, and an exhaust hole is opened at the edge of the top surface of the kettle lid.

[0006] Furthermore, a plurality of connecting holes are formed on the outer wall of the inner liner, a spout is fixed on the outer wall of the kettle body, and the spout and the kettle body are an integrally formed structure.

[0007] Furthermore, a handle is fixed on the top of the outer side wall of the kettle body, and the handle is made of zinc alloy.

[0008] Furthermore, an arc box is fixed on the top surface of the pot cover at a position corresponding to the exhaust hole, a hose is connected through the top surface of the arc box, one end of the hose passes through the outer wall of the spout, an air bag is fixed on the outer wall of the spout near the top, and one end of the hose is connected to the air bag.

[0009] Furthermore, a fixing rod is fixed to the outer wall of the pot body near the top, a connecting rod is fixed to the top surface of the arc box, an extrusion rod is fixed to one end of the connecting rod, and the extrusion rod cooperates with the fixing rod.

[0010] Furthermore, an exhaust pipe is connected through the outer wall of the hose near the middle, and a first valve is provided on the outer wall of the exhaust pipe.

[0011] Furthermore, a shape memory alloy expansion strip is fixed to the top of the inner side wall of the inner liner, and the shape memory alloy expansion strip is a ring structure.

[0012] Furthermore, an air inlet pipe is connected to the bottom surface of the inner wall of the inner tank, and the air inlet pipe passes through the heating bottom plate, the fixed arc plate and the kettle body. A dispersion cone is fixed on the top surface of the air inlet pipe, and a plurality of air inlet holes distributed in a circle are opened on the top of the outer wall of the air inlet pipe.

[0013] Furthermore, a sealing column is fixed to the top of the inner wall of the air intake pipe, a sealing hole is opened on the bottom surface of the sealing column, an inner hole is opened on the top surface of the inner wall of the sealing hole, and the inner hole runs through the sealing column; a fixing plate is fixed to the inner wall of the air intake pipe near the top position, a movable column is movably connected to the middle part of the top surface of the fixing plate, a sealing ball is fixed to the top surface of the movable column, the sealing ball is engaged in the sealing hole, a baffle is fixed to the bottom surface of the movable column, a spring is arranged on the periphery of the movable column, and a plurality of vent holes of different lengths distributed in a circle are opened on the top surface of the fixed plate.

[0014] Furthermore, an annular tube is fixed at the bottom of the outer wall of the kettle body, an annular condenser is fixed to the inner wall of the annular tube on a side away from the coupler, a water outlet pipe is connected through the outer wall of the annular tube, and a second valve is provided on the outer wall of the water outlet pipe.

[0015] Compared with the prior art, the vacuum kettle provided by the present invention has at least the following beneficial effects: (1) By adopting an integrally formed inner liner, deformation of the inner liner that occurs when the kettle is produced by the traditional method can be effectively avoided, which causes the inner liner to be scrapped and increases the production cost of the kettle. After the integrally formed inner liner is adopted, the heating base plate is connected to the bottom of the inner liner, which can effectively avoid the large gap around the bottom of the inner liner of the kettle produced by the traditional method, thereby improving the aesthetics of the kettle and avoiding dirt and leakage.

[0016] (2) The shape memory alloy expansion strip is provided so that the shape memory alloy expansion strip expands when heated so that a sealing effect can be achieved between the pot lid and the top of the inner tank, and the position of the pot lid can be fixed at the same time, thereby preventing water vapor from leaking out and the pot lid from falling off when pouring water. The air bag is provided so that the pot spout can be blocked, thereby further preventing water vapor from leaking out. The squeezing rod and the fixing rod are provided so that the hose can be squeezed and blocked, and then the first valve is cooperated to discharge the water vapor in the air bag so that the pot spout can be opened to pour water. The sealing ball, the sealing column, the inner hole, the sealing hole and the spring are provided so that the air inlet pipe can be opened and closed, thereby facilitating the discharge of a large amount of water vapor in the inner tank into the annular tube during the boiling of water, so that the water vapor can be condensed by the annular condensing sheet, thereby effectively preventing the water vapor generated during the boiling of water from being discharged into the room and causing the indoor humidity to increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the airbag structure of the present invention; Figure 3 For the present invention Figure 2 A is a schematic diagram of the partially enlarged structure of the middle part; Figure 4 This is a schematic diagram of the cross-sectional structure of the kettle body of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure of B; Figure 6 It is a schematic diagram of the structure of the coupler of the present invention; Figure 7 This is a schematic diagram of the sealing column structure of the present invention; Figure 8 This is a schematic diagram of the structure of the annular condenser tube of the present invention; Fig. 9 It is a schematic diagram of the exhaust hole structure of the present invention.

[0018] In the figure: 100, kettle body; 101, liner; 102, heating base plate; 103, connecting hole; 104, coupler; 105, spout; 106, handle; 107, fixed arc plate; 200, pot cover; 201, vent hole; 300, arc box; 301, hose; 302, air bag; 303, exhaust pipe; 304, first valve; 400, fixed rod; 401, extrusion rod; 402, connecting rod; 500, air inlet pipe; 501, dispersion cone; 502, air inlet hole; 503, sealing column; 504, inner hole; 505, sealing hole; 600, fixed plate; 601, vent hole; 602, movable column; 603, spring; 604, baffle; 605, sealing ball; 700, annular pipe; 701, annular condenser; 702, water outlet pipe; 703, second valve; 800. Shape memory alloy expansion strip. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that, in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] In the accompanying drawings, the size and relative size of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a different order than described. For example, two successively described processes may be performed substantially simultaneously or in an order opposite to the order described. In addition, the same reference numerals represent the same components.

[0021] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0022] See also Figure 1-Figure 9The present invention provides a vacuum kettle, comprising a kettle body 100, wherein an inner liner 101 is fixed inside the kettle body 100, the side and bottom of the inner liner 101 are integrally formed, a placement bottom plate is fixed to the bottom of the kettle body 100, a fixed arc plate 107 is fixed inside the placement bottom plate, the fixed arc plate 107, the placement bottom plate and the kettle body 101 are an integrally formed structure, the top of the placement bottom plate is fixed to the bottom surface of the inner liner 101, a heating bottom plate 102 is fixed to the bottom surface of the inner liner 101, a coupler 104 is fixed to the bottom surface of the heating bottom plate 102, the coupler 104 is fixed to the bottom of the kettle body 100, a kettle cover 200 is detachably connected to the top of the inner liner 101, and an exhaust hole 201 is opened at the edge of the top surface of the kettle cover 200.

[0023] The exhaust hole 201 is formed by cutting a notch on the edge of the pot cover 200 and then cutting 2 mm back, and the hole shape is changed to a crescent shape to increase the water vapor leakage area.

[0024] When the kettle body 100 and the inner liner 101 are connected, a vacuum treatment method is used to extract the air between the kettle body 100 and the inner liner 101, so that the kettle body 100 and the inner liner 101 are in a vacuum state.

[0025] As a further solution of the present invention, a plurality of connecting holes 103 are opened on the outer wall of the inner liner 101, and a spout 105 is fixed to the outer wall of the kettle body 100, and the spout 105 and the kettle body 100 are an integrally formed structure.

[0026] Through the provided connecting hole 103, the water in the inner pot 101 can be discharged from the connecting hole 103 into the spout 105 and then discharged.

[0027] As a further solution of the present invention, a handle 106 is fixed to the top of the outer wall of the kettle body 100, and the handle 106 is made of zinc alloy.

[0028] The handle 106 is provided to make the kettle body 100 easy to hold, and the zinc alloy material improves the hand feel.

[0029] As a further solution of the present invention, an arc box 300 is fixed at a position on the top surface of the kettle cover 200 corresponding to the exhaust hole 201, and a hose 301 is connected to the top surface of the arc box 300. One end of the hose 301 passes through the outer wall of the spout 105. An air bag 302 is fixed on the outer wall of the spout 105 near the top, and one end of the hose 301 is connected to the air bag 302.

[0030] By means of the arc box 300, the gas discharged from the exhaust hole 201 can be collected by the arc box 300, and by means of the hose 301, the arc box 300 and the air bag 302 can be connected, and by means of the air bag 302, the water vapor generated by the water in the inner pot 101 during the boiling process can enter the arc box 300 and then enter the air bag 302 through the hose 301, so that the air bag 302 expands and blocks the spout 105.

[0031] Among them, the material of the airbag 302 is silicone rubber, which has good high temperature resistance and can usually be used for a long time within the temperature range of -50°C to 250°C. When the airbag 302 contacts the inner wall of the spout 105 and contacts water vapor, the airbag 302 can withstand the temperature without melting, brittle cracking and other serious damage.

[0032] As a further solution of the present invention, a fixing rod 400 is fixed to the outer wall of the kettle body 100 near the top, a connecting rod 402 is fixed to the top surface of the arc box 300, an extrusion rod 401 is fixed to one end of the connecting rod 402, and the extrusion rod 401 cooperates with the fixing rod 400.

[0033] By providing the squeezing rod 401 and the fixing rod 400 , when the pot cover 200 is rotated, the squeezing rod 401 can move synchronously with the pot cover 200 to squeeze the hose 301 , so that the water vapor in the inner pot 101 will not enter the hose 301 .

[0034] As a further solution of the present invention, an exhaust pipe 303 is connected through the outer wall of the hose 301 near the middle, and a first valve 304 is provided on the outer wall of the exhaust pipe 303 .

[0035] By setting the exhaust pipe 303 and the first valve 304, when the hose 301 is squeezed and closed by the squeezing rod 401 and the fixing rod 400, the first valve 304 can be opened to discharge the gas in the airbag 302, thereby opening the spout 105 for pouring water.

[0036] As a further solution of the present invention, a shape memory alloy expansion strip 800 is fixed to the top of the inner wall of the inner liner 101, and the shape memory alloy expansion strip 800 is a ring structure.

[0037] By setting the shape memory alloy expansion strip 800, when the kettle is used to boil water, the heat in the water vapor generated can heat the shape memory alloy expansion strip 800, thereby expanding the shape memory alloy expansion strip 800 and tightly sealing the kettle lid 200 and the inner pot 101 to prevent the water vapor from leaking out.

[0038] The shape memory alloy expansion strip 800 is generally made of shape memory alloys such as nickel-titanium alloys. Such alloys have a unique crystal structure, and the crystal structure changes at different temperatures, thereby causing the shape and size of the material to change.

[0039] Working principle: At a relatively low temperature, the shape memory alloy expansion strip 800 is in a stable shape and size. When subjected to the heat of water vapor and the temperature rises above a specific transition temperature, the crystal structure inside the alloy changes, and the atoms are rearranged, causing the expansion strip to begin to expand and return to a pre-set shape or size, showing obvious expansion characteristics.

[0040] Advantages: It has good memory performance and reliability, can accurately restore to the set shape and size during multiple thermal cycles, has a fast expansion response, and is highly sensitive to temperature changes.

[0041] As a further solution of the present invention, the bottom surface of the inner wall of the inner tank 101 is connected with an air inlet pipe 500, and the air inlet pipe 500 passes through the heating bottom plate 102, the fixed arc plate 107 and the kettle body 100. A dispersion cone 501 is fixed on the top surface of the air inlet pipe 500, and a plurality of air inlet holes 502 distributed in a circular pattern are opened on the top of the outer wall of the air inlet pipe 500.

[0042] By setting the air inlet pipe 500, the water vapor generated by boiling water can enter the air inlet pipe 500 from the air inlet hole 502, which is convenient for the next step of condensing the water vapor. By setting the dispersion cone 501, when pouring water into the inner pot 101, the water can be dispersed by the dispersion cone 501, avoiding the water from entering the air inlet pipe 500 through the air inlet hole 502.

[0043] As a further solution of the present invention, a sealing column 503 is fixed to the top of the inner wall of the air intake pipe 500, a sealing hole 505 is opened on the bottom surface of the sealing column 503, an inner hole 504 is opened on the top surface of the inner wall of the sealing hole 505, and the inner hole 504 penetrates the sealing column 503, a fixing plate 600 is fixed to the inner wall of the air intake pipe 500 near the top position, a moving column 602 is movably connected to the middle of the top surface of the fixing plate 600, a sealing ball 605 is fixed to the top surface of the moving column 602, and the sealing ball 605 is engaged in the sealing hole 505, a baffle 604 is fixed to the bottom surface of the moving column 602, a spring 603 is arranged on the periphery of the moving column 602, and a plurality of vent holes 601 of different lengths distributed in a circle are opened on the top surface of the fixing plate 600.

[0044] By providing the sealing ball 605 , the spring 603 , the sealing column 503 , the inner hole 504 and the moving column 602 , the sealing hole 505 can be blocked and opened by the sealing ball 605 .

[0045] The surfaces of the sealing ball 605 and the spring 603 are treated with high-grade nickel, so that the sealing ball 605 and the spring 603 will not rust.

[0046] As a further solution of the present invention, an annular tube 700 is fixed to the bottom of the outer wall of the kettle body 100, an annular condenser sheet 701 is fixed to the inner wall of the annular tube 700 on a side away from the coupler 104, a water outlet pipe 702 is connected through the outer wall of the annular tube 700, and a second valve 703 is provided on the outer wall of the water outlet pipe 702.

[0047] By setting up the annular pipe 700 , water generated by condensation can be stored in the annular pipe 700 , and by setting up the annular condensing sheet 701 , water vapor discharged from the air intake pipe 500 can be condensed by the annular condensing sheet 701 .

[0048] In summary: when reproducing the kettle, the heating base plate 102 is connected to the bottom surface of the integrally formed inner tank 101. In this way, there will be no gap between the inner tank 101 and its bottom. The heating base plate 102 is connected to the bottom surface of the inner tank 101 by first heating the heating base plate 102 to 800 degrees separately, and then embedding it into the bottom of the inner tank 101. In this way, during the production process, the inner tank 101 is not easy to deform, which greatly reduces the scrap rate and the production cost.

[0049] When boiling water, first remove the kettle cover 200, then pour water into the inner tank 101, the water is dispersed by the dispersion cone 501, after pouring appropriate water into the inner tank 101, cover the kettle cover 200 so that the hose 301 is located between the extrusion rod 401 and the fixing rod 400, put the coupler 104 at the bottom of the kettle into the base corresponding to the kettle, then heat the bottom plate 102 to heat the bottom surface of the inner tank 101, and then heat the water in the inner tank 101. As the water temperature increases, a large amount of water vapor is generated in the inner tank 101, and the water vapor moves upward to transfer heat to the shape memory alloy expansion strip 800, which expands due to the heat, so that the inner tank 101 The top of the inner wall and the kettle lid 200 are tightly sealed, and at the same time, water vapor will adhere to the bottom surface of the shape memory alloy expansion strip 800 to form a water film, which will further block the small gap between the inner wall of the shape memory alloy expansion strip 800 and the kettle lid 200. The shape memory alloy expansion strip 800 can expand and push the kettle lid 200 at the same time, so that the kettle lid 200 is tightly fixed to the kettle. At the same time, water vapor will be discharged into the arc box 300 through the exhaust hole 201, and then enter the airbag 302 through the hose 301. At this time, a large amount of water vapor enters the airbag 302, causing the airbag 302 to expand. After the airbag 302 expands, it adapts to the shape of the inner wall of the spout 105, so that the spout 105 5 is blocked, and at the same time, the water vapor in the spout 105 moves up and adheres to the bottom surface of the air bag 302 to form a water film, so that the position between the bottom surface of the air bag 302 and the spout 105 is further sealed. As the water temperature continues to rise, the water vapor content in the inner liner 101 continues to increase, and the pressure of the inner liner 101 also increases. The water vapor enters the air inlet pipe 500 through the air inlet hole 502 and pushes the sealing ball 605 to move downward. At this time, the spring 603 is compressed, and the water vapor enters the annular tube 700 through the inner hole 504 and the sealing hole 505, and contacts the annular condensing sheet 701. The annular condensing sheet 701 condenses the water vapor to form water droplets that adhere to the annular condensing sheet 701 and fall to the annular tube 700. During the process of boiling the water in the inner tank 101, the water vapor in the inner tank 101 enters the annular tube 700 for condensation. After the water boils, the amount of water vapor generated by the water in the inner tank 101 decreases. When the pressure in the inner tank 101 is not enough to push the sealing ball 605 to move, the spring 603 pushes the sealing ball 605 to move up and engages with the sealing hole 505 to prevent the water vapor in the inner tank 101 from entering the air inlet pipe 500. After the water boils, the water in the inner tank 101 will continue to generate water vapor, but the amount of water vapor generated is not enough to push the sealing ball 605 to move, so that after the water boils, the entire interior of the kettle is in a closed state, which effectively keeps the water warm.

[0050] When it is necessary to pour water, the lid 200 is rotated so that the squeezing rod 401 pushes the hose 301 to contact the fixed rod 400. At this time, the hose 301 is squeezed and blocked, and then the first valve 304 is opened to discharge the gas in the airbag 302. At this time, the spout 105 is opened and the water can be poured. After the pouring is completed, the first valve 304 is closed and the lid 200 is rotated in the opposite direction to restore the lid 200 to its initial position. At this time, the water vapor in the inner tank 101 will enter the airbag 302 through the hose 301, causing the airbag 302 to expand and block the spout 105.

[0051] When pouring out the water in the annular tube 700 , the second valve 703 is opened, and the water inside the annular tube 700 is discharged through the water outlet pipe 702 .

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum kettle, comprising a kettle body (100), an inner liner (101) being fixed inside the kettle body (100), the side and bottom of the inner liner (101) being integrally formed, a placement bottom plate being fixed inside the bottom of the kettle body (100), a fixed arc plate (107) being fixed inside the placement bottom plate, the fixed arc plate (107), the placement bottom plate and the kettle body (101) being an integrally formed structure, the top of the placement bottom plate being fixed to the bottom surface of the inner liner (101), a heating bottom plate (102) being fixed to the bottom surface of the inner liner (101), a coupler (104) being fixed to the bottom surface of the heating bottom plate (102), the coupler (104) being fixed to the bottom of the kettle body (100), a kettle cover (200) being detachably connected to the top of the inner liner (101), and an exhaust hole (201) being provided at the edge of the top surface of the kettle cover (200).

2. A vacuum kettle according to claim 1, characterized in that: The outer wall of the inner container (101) is provided with a plurality of communicating holes (103); the outer wall of the kettle body (100) is fixed with a spout (105); the spout (105) and the kettle body (100) are an integrally formed structure.

3. The vacuum kettle according to claim 1, characterized in that: A handle (106) is fixed on the top of the outer wall of the kettle body (100), and the handle (106) is made of zinc alloy.

4. The vacuum kettle according to claim 1, characterized in that: An arc-shaped box (300) is fixed at a position on the top surface of the pot cover (200) corresponding to the exhaust hole (201), a hose (301) is connected through the top surface of the arc-shaped box (300), one end of the hose (301) passes through the outer wall of the pot spout (105), an air bag (302) is fixed at a position near the top of the outer wall of the pot spout (105), and one end of the hose (301) is connected to the air bag (302).

5. The vacuum kettle according to claim 1, characterized in that: A fixing rod (400) is fixed to the outer wall of the kettle body (100) near the top, a connecting rod (402) is fixed to the top surface of the arc-shaped box (300), an extrusion rod (401) is fixed to one end of the connecting rod (402), and the extrusion rod (401) cooperates with the fixing rod (400).

6. A vacuum kettle according to claim 4, characterized in that: An exhaust pipe (303) is connected through the outer wall of the hose (301) near the middle, and a first valve (304) is provided on the outer wall of the exhaust pipe (303).

7. The vacuum kettle according to claim 1, characterized in that: A shape memory alloy expansion strip (800) is fixed to the top of the inner side wall of the inner liner (101), and the shape memory alloy expansion strip (800) is an annular structure.

8. The vacuum kettle according to claim 1, characterized in that: An air intake pipe (500) is connected to the bottom surface of the inner wall of the inner pot (101), and the air intake pipe (500) passes through the heating bottom plate (102), the fixed arc plate (107) and the kettle body (100). A dispersion cone (501) is fixed to the top surface of the air intake pipe (500), and a plurality of air intake holes (502) distributed in a circumferential manner are opened at the top of the outer wall of the air intake pipe (500).

9. The vacuum kettle according to claim 8, characterized in that: A sealing column (503) is fixed to the top of the inner wall of the air intake pipe (500), a sealing hole (505) is provided on the bottom surface of the sealing column (503), an inner hole (504) is provided on the top surface of the inner wall of the sealing hole (505), and the inner hole (504) penetrates the sealing column (503); a fixing plate (600) is fixed to the inner wall of the air intake pipe (500) near the top, a moving column (602) is movably connected to the middle of the top surface of the fixing plate (600), a sealing ball (605) is fixed to the top surface of the moving column (602), and the sealing ball (605) is engaged in the sealing hole (505); a baffle (604) is fixed to the bottom surface of the moving column (602), a spring (603) is arranged on the periphery of the moving column (602), and a plurality of vent holes (601) of different lengths that are distributed in a circle are provided on the top surface of the fixing plate (600).

10. The vacuum kettle according to claim 1, characterized in that: An annular tube (700) is fixed to the bottom of the outer wall of the kettle body (100), an annular condensing sheet (701) is fixed to the inner wall of the annular tube (700) on a side away from the coupler (104), a water outlet pipe (702) is connected through the outer wall of the annular tube (700), and a second valve (703) is provided on the outer wall of the water outlet pipe (702).

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