Heatable vacuum cup

Abstract

The utility model relates to the technical field of vacuum cup purification devices, in particular to a heatable vacuum cup. A heatable vacuum cup comprises a cup cover, a cup body and a cup base which are connected with one another, the cup body comprises a shell and an inner container located in the shell, a gap is formed between the inner container and the shell to form a vacuum cavity, a circle of annular assembly part extending downwards is arranged at the bottom of the shell, the annular assembly part and the inner container are coaxially arranged, and the annular assembly part and the inner container are coaxially arranged. The upper end of the cup base abuts against the annular assembling part, an assembling cavity is formed between the upper end of the cup base and the annular assembling part, an electromagnetic induction coil for heating the inner container is arranged in the assembling cavity and coaxially arranged in the annular assembling part, and an electronic element connected with the electromagnetic induction coil is arranged in the cup base. The utility model has the advantages of slower heat loss and better heat preservation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of thermos cup purification devices, in particular to a heatable thermos cup. Background Art

[0002] Currently, thermos cups on the market typically have a heating tube or heating plate installed at the bottom of the cup for heating. The heating tube or heating plate directly contacts the inner liner of the thermos cup, thereby heating the bottom of the liner. For example, Chinese patent application number 201922269787.2 discloses a multifunctional thermos cup. This patent installs a heater at the bottom of the cup, and the bottom of the liner is fixed to the top of the heater, thereby heating the liner.

[0003] However, this setting will cause the heat of the inner liner to quickly lose from the bottom of the cup when the thermos cup does not need to be heated, which is not conducive to the insulation of the thermos cup. Summary of the Invention

[0004] In order to solve the deficiencies in the prior art, a heatable thermos cup with slow heat loss and good heat preservation effect is provided.

[0005] The utility model is implemented by the following technical scheme: a heatable thermos cup, comprising a cup cover, a cup body and a cup base connected to each other, the cup body comprising an outer shell and an inner liner located in the outer shell, a gap being provided between the inner liner and the outer shell to form a vacuum chamber, the bottom of the outer shell being provided with a circle of downwardly extending annular assembly portion, the annular assembly portion being coaxially arranged with the inner liner, the upper end of the cup base being in contact with the annular assembly portion and an assembly cavity being formed therebetween, an electromagnetic induction coil for heating the inner liner being provided in the assembly cavity, the electromagnetic induction coil being coaxially arranged in the annular assembly portion, and an electronic component connected to the electromagnetic induction coil being provided in the cup base.

[0006] In actual use, electronic components control the magnetic effect of the electromagnetic induction coil, and generate eddy currents through electromagnetic induction to heat the inner tank, thereby heating the liquid in the inner tank. At the same time, since there is no contact between the inner tank and the outer shell and it is a vacuum cavity, the heat loss of the inner tank is slow, so the thermal insulation effect is better.

[0007] The outer shell is made of non-magnetic material, so the outer shell will not heat up; the inner pot is made of magnetic material, which can be any existing metal material that can hold edible liquid and can be heated by electromagnetic induction, such as stainless steel.

[0008] The gap between the inner liner and the outer shell is mainly distributed in the gap between the inner liner body and the outer shell body where there is no contact, and the gap between the bottom of the inner liner and the bottom of the outer shell where there is no contact.

[0009] The electronic component is a device that can control the magnetic effect of the electromagnetic induction coil, such as an existing battery and circuit board.

[0010] The cup cover is any existing thermos cup cover that can ensure sealing.

[0011] This solution utilizes a vacuum chamber between the inner liner and the outer shell to heat the inner liner through electromagnetic induction, thereby preventing heat loss from the inner liner through the bottom of the cup and enhancing thermal insulation. Furthermore, a downward-extending annular assembly is provided at the bottom of the outer shell. This annular assembly surrounds the electromagnetic induction coil, and the annular assembly, the electromagnetic induction coil, and the inner liner are coaxially arranged to ensure that the magnetic effect of the electromagnetic induction coil and the inner liner are not offset. This maximizes the heatable area of the inner liner, improves heating efficiency, and reduces energy loss.

[0012] Preferably, the annular assembly portion includes an outer layer and an inner layer, the outer layer is integrally arranged with the outer shell, and the inner layer is separately arranged with the outer shell, the inner layer includes a dome portion and an annular wall portion, the dome portion constitutes the bottom surface of the cup body, and the annular wall portion is integrally arranged with the dome portion and is sealed with the inner wall of the outer layer.

[0013] By adopting a split arrangement of the outer layer and the inner layer of the annular assembly part, the processing of the annular assembly part can be facilitated. At the same time, the outer wall of the annular wall body and the inner wall of the outer layer are sealed to increase the sealing contact area, thereby ensuring the sealing of the vacuum chamber.

[0014] Preferably, the annular assembly portion is made of non-magnetic material.

[0015] The annular assembly part is made of non-magnetic conductive material to prevent the electromagnetic induction coil from heating the annular assembly part. The non-magnetic conductive material can be copper.

[0016] Preferably, the outer diameter of the annular assembly portion is smaller than the outer diameter of the outer shell so that a step surface is formed between the two. A circle of upwardly extending annular connecting portions is provided at the circumferential outer edge of the top of the cup holder. The annular connecting portion is plugged into the annular assembly portion, and the top of the annular connecting portion abuts against the step surface.

[0017] The plug-in fit between the cup holder and the annular assembly portion makes the structure therebetween more compact, thereby ensuring that the electromagnetic induction coil is located inside.

[0018] Preferably, a magnetic isolation plate is provided at the lower end of the electromagnetic induction coil, the magnetic isolation plate is located above the electronic component, and the axial projection of the electromagnetic induction coil is located on the magnetic isolation plate.

[0019] By providing a magnetic isolation plate, the downward magnetic field can be weakened to avoid heating of electronic components and affecting the service life of the electronic components.

[0020] Preferably, a first annular protrusion extending upward is provided on the top of the cup base, and the first annular protrusion forms a placement groove for placing the magnetic isolation plate and the electromagnetic induction coil.

[0021] By providing the placement slot, the position of the magnetic isolation plate and the electromagnetic induction component can be limited, further ensuring that the electromagnetic induction component is located in the center, thereby achieving a better magnetic induction heating effect on the inner tank.

[0022] Preferably, a temperature sensor is provided at the bottom of the inner container, and the temperature sensor passes through the inner container and the annular assembly portion and is electrically connected to the electronic component.

[0023] By setting a temperature sensor, the temperature of the liquid in the inner tank can be detected. When the temperature of the inner tank is too high or too low, the electronic component will control whether the electromagnetic induction coil needs to generate magnetic induction.

[0024] Preferably, a connecting tube extends downward from the bottom of the inner tank, a second annular protrusion extends downward from the annular assembly portion, and a through hole with an inner diameter equal to that of the second annular protrusion is provided. The connecting tube passes through the vacuum chamber and is sealed and inserted into the through hole and the second annular protrusion. The lower end of the temperature sensor passes through the connecting tube, the through hole and the second annular protrusion.

[0025] A connecting tube is provided to form a channel for the temperature sensor to pass through. At the same time, in order to ensure sealing, a second annular protrusion is provided on the annular assembly portion, so that the contact area between the connecting tube and the second annular protrusion is larger, thereby ensuring better sealing of the vacuum chamber.

[0026] Preferably, the connecting pipe is integrally provided with the inner container, and the second annular protrusion is integrally provided with the annular assembly portion.

[0027] The connecting pipe is integrally provided with the inner container, and the second annular protrusion is integrally provided with the annular assembly portion, which can further enhance the sealing performance.

[0028] Preferably, the electronic component includes a frame located inside the cup holder, and the frame is provided with a circuit board and a lithium battery.

[0029] The current of the lithium battery to the electromagnetic induction coil is controlled by the circuit board.

[0030] Compared with the prior art, the beneficial effects of the present invention are: 1. The electromagnetic induction heating method can make the vacuum setting between the inner tank and the outer shell non-contact, and the thermal insulation effect is good; 2. It has an annular assembly part, and the electromagnetic induction component is coaxially arranged in the annular assembly part, which maximizes the heating area of the inner tank and has a good heating effect; 3. The magnetic isolation plate can prevent electronic components from being damaged by heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the utility model;

[0032] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0033] Figure 3 Schematic diagram of the structure of the bottom of the cup body;

[0034] Figure 4 for Figure 3 sectional view of

[0035] Figure 5 It is a cross-sectional view of the connection between the cup body and the cup base;

[0036] Figure 6 It is an enlarged cross-sectional view of the connection between the cup body and the cup base;

[0037] Figure 7 for Figure 4 Enlarged view of point A.

[0038] Figure numbers: 1. cup body; 11. outer shell; 12. liner; 121. connecting pipe; 13. vacuum chamber; 2. cup cover; 3. cup base; 31. annular connecting part; 32. first annular protrusion; 321. supporting protrusion; 41. frame; 42. lithium battery; 43. circuit board; 5. annular assembly part; 51. outer layer; 52. inner layer; 521. annular wall part; 522. dome part; 6. temperature sensor; 61. nut; 7. electromagnetic induction coil; 71. magnetic isolation plate; 8. second annular protrusion. DETAILED DESCRIPTION

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] like Figures 1 to 4As shown, this embodiment discloses a heatable thermos cup, which includes, from top to bottom, a cup lid 2, a cup body 1, and a cup holder 3. The cup lid 2 is an existing cup lid that can be opened by a button, and mainly includes a lower part connected to the cup body 1 and an upper part hinged to the lower part. Pressing the button causes the upper part to open so that the user can drink water. The cup body 1 includes, from the outside to the inside, an outer shell 11 and an inner liner 12. The outer shell 11 and the inner liner 12 are fixedly connected near the opening at their upper ends, and the rest of the parts are not in contact so that a vacuum chamber 13 is formed with a gap. The outer wall of the upper end opening of the outer shell 11 is provided with an external thread structure that is threadedly matched with the internal thread structure at the lower end of the cup lid 2. An IH heating assembly is provided on and inside the cup holder 3. The IH heating assembly mainly includes an electromagnetic induction coil 7 and electronic components that enable the electromagnetic induction coil 7 to generate a magnetic effect. The electronic components include a frame 41, a lithium battery 42 arranged on the frame 41, and a circuit board 43. The inner container 12 is made of stainless steel with good magnetic conductivity. When the electromagnetic induction coil 7 generates a magnetic effect, the inner container 12 will generate heat.

[0041] like Figure 3 and Figure 4 As shown, a downwardly extending annular assembly portion 5 is provided at the bottom of the cup body 1. The annular assembly portion 5 comprises an outer layer 51 and an inner layer 52. The outer layer 51 is integrally formed with the outer shell 11, and its outer diameter is smaller than that of the outer shell 11, forming a stepped surface at the junction of the two. The inner layer 52 is separate from the outer shell 11 and comprises a dome portion 522 and an annular wall portion 521 located below the dome portion 522. The dome portion 522 and the annular wall portion 521 are integrally formed. The dome portion 522 forms the bottom surface of the cup body 1. The annular wall portion 521 and the outer layer 51 are in sealed contact, resulting in a certain axial length at the sealed junction between the two, thereby enhancing the sealing of the vacuum chamber 13. The annular assembly portion 5 is supported by copper material, which has poor magnetic permeability. The inner liner 12, the annular assembly portion 5, and the electromagnetic induction coil are coaxially arranged.

[0042] like Figures 2 to 6As shown, an upwardly extending annular connecting portion 31 is provided at the circumferential outer edge of the top of the cup holder 3. The outer diameter of the annular connecting portion 31 is the same as that of the outer shell 11. The annular connecting portion 31 is plugged into the outer layer 51 of the annular mounting portion 5, so that the top of the annular connecting portion 31 abuts the stepped surface and the inner wall of the annular connecting portion 31 contacts and engages with the outer wall of the outer layer 51 of the annular mounting portion 5. An assembly cavity is formed between the inner layer 52 of the annular mounting portion 5 and the top of the cup holder 3. An electromagnetic induction coil 7 and a magnetic shielding plate 71 are disposed within the assembly cavity. The magnetic shielding plate 71 is positioned below and supports the electromagnetic induction coil 7. The area of the magnetic shielding plate 71 is equal to that of the electromagnetic induction coil 7, and the axial projection of the electromagnetic induction coil 7 is located on the magnetic shielding plate 71. A first annular protrusion 32 extending upward is also provided at the top of the cup holder 3. The first annular protrusion 32 encloses a recess for accommodating the electromagnetic induction coil 7 and the magnetic shielding plate 71. The placement groove is located in the assembly cavity. A plurality of support protrusions 321 evenly spaced circumferentially are provided in the placement groove. The support protrusions 321 support the bottom of the magnetic isolation plate 71 .

[0043] like Figure 7 As shown, a connecting tube 121 extending downward is provided at the bottom of the inner liner 12. The connecting tube 121 is hollow and integrally provided with the inner liner 12. The inner layer 52 is provided with a second annular protrusion 8 extending downward. The inner layer 52 is also provided with a through hole having an inner diameter equal to that of the second annular protrusion 8. The through hole is concentrically arranged and connected to the inner hole of the second annular protrusion 8. The second annular protrusion 8 is integrally provided with the inner layer 52. The connecting tube 121 passes downward through the vacuum chamber 13 and enters the through hole and the second annular protrusion 8 and is sealed. A temperature sensor 6 is provided in the inner liner 12. The upper end of the temperature sensor 6 is located in the inner liner 12, and the lower end extends downward to the outside of the second annular protrusion 8 and is fixed by a nut 61. The temperature sensor 6 is electrically connected to the electronic components to control the magnetic field strength of the electromagnetic induction coil 7.

[0044] During use, the electromagnetic induction coil 7 generates a magnetic field, which in turn generates heat in the inner container 12, heating the liquid within. When the temperature reaches a certain level, the temperature sensor 6 sends a signal to the electronic components, which discontinues the electromagnetic induction coil's magnetic field. The vacuum chamber 13 outside the inner container 12 reduces heat loss, thereby achieving better insulation.

Claims

1. A heatable thermos cup, comprising a cup cover, a cup body and a cup base connected to each other, characterized in that: The cup body includes an outer shell and an inner liner located inside the outer shell. A gap is provided between the inner liner and the outer shell to form a vacuum chamber. The bottom of the outer shell is provided with a downwardly extending annular assembly portion. The annular assembly portion is coaxially arranged with the inner liner. The upper end of the cup seat abuts against the annular assembly portion and an assembly cavity is formed therebetween. An electromagnetic induction coil for heating the inner liner is provided in the assembly cavity. The electromagnetic induction coil is coaxially arranged in the annular assembly portion. An electronic component connected to the electromagnetic induction coil is provided in the cup seat.

2. The heatable thermos cup according to claim 1, characterized in that: The annular assembly portion includes an outer layer and an inner layer, the outer layer is integrally arranged with the outer shell, and the inner layer is separately arranged with the outer shell, the inner layer includes a dome portion and an annular wall portion located below the dome portion, the dome portion constitutes the bottom surface of the cup body, and the annular wall portion is integrally arranged with the dome portion and is sealed with the inner wall of the outer layer.

3. The heatable thermos cup according to claim 1, characterized in that: The annular assembly portion is made of non-magnetic conductive material.

4. The heatable thermos cup according to claim 1, 2 or 3, characterized in that: The outer diameter of the annular assembly portion is smaller than the outer diameter of the outer shell so that a step surface is formed between the two. A circle of upwardly extending annular connecting portions is provided at the circumferential outer edge of the top of the cup holder. The annular connecting portion is plugged into and matched with the annular assembly portion, and the top of the annular connecting portion abuts against the step surface.

5. The heatable thermos cup according to claim 1, 2 or 3, characterized in that: A magnetic isolation plate is provided at the lower end of the electromagnetic induction coil. The magnetic isolation plate is located above the electronic components, and the axial projections of the electromagnetic induction coil are all located on the magnetic isolation plate.

6. The heatable thermos cup according to claim 5, characterized in that: A first annular protrusion extending upward is provided on the top of the cup seat, and the first annular protrusion forms a placement groove for placing the magnetic isolation plate and the electromagnetic induction coil.

7. The heatable thermos cup according to claim 1, 2 or 3, characterized in that: A temperature sensor is provided at the bottom of the inner container, and the temperature sensor passes through the inner container and the annular assembly portion and is electrically connected to the electronic component.

8. The heatable thermos cup according to claim 7, characterized in that: A connecting tube extends downward from the bottom of the inner tank, a second annular protrusion extends downward from the annular assembly portion, and a through hole with an inner diameter equal to that of the second annular protrusion is provided. The connecting tube passes through the vacuum chamber and is sealed and inserted into the through hole and the second annular protrusion. The lower end of the temperature sensor passes through the connecting tube, the through hole and the second annular protrusion.

9. The heatable thermos cup according to claim 8, characterized in that: The connecting pipe is integrally provided with the inner container, and the second annular protrusion is integrally provided with the annular assembly portion.

10. The heatable thermos cup according to claim 1, characterized in that: The electronic component comprises a frame located inside the cup holder, and a circuit board and a lithium battery are arranged on the frame.

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