Power supply heating vacuum cup
By separating the power supply and heating element into independent chambers within the thermos, the problems of battery aging and volume reduction are solved, achieving both power supply protection and increased volume.
Patent Information
- Application Number
- CN202520616551.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-04-02
AI Technical Summary
The heating element and battery of a traditional thermos are located in the same space, which causes the battery to age in high-temperature environments and reduces its battery life. In addition, the fixed bracket increases the thickness of the bottom of the thermos and reduces its volume.
The power supply and heating element are placed in separate mounting cavities, with the power supply in the first mounting cavity and the heating element in the second mounting cavity. The double-layer shell design isolates heat conduction and eliminates the fixed bracket, thus optimizing the structural design.
It protects the power supply from the heat of the heating element, extends the battery life, increases the volume, reduces the thickness of the power supply, and improves the effective volume of the thermos.
Smart Images

Figure CN223759612U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of thermos cups, specifically to a thermos cup heated by an electric power source. Background Technology
[0002] Traditional thermos flasks use a double-walled design to keep hot water warm for a period of time after it is filled, preventing the water from cooling down quickly. However, traditional thermos flasks do not have a heating function, so they can only be used after being pre-filled with hot water.
[0003] One type of existing thermos cup uses a heating base connected to an external charging cable to heat the liquid inside. However, this type of thermos cup can only be heated by connecting to an external circuit via a charging cable; it cannot be used without a charging cable or external power supply, which is very limiting.
[0004] Another type of thermos has a battery at the bottom that powers a heating element, which in turn heats the liquid inside the thermos, ensuring that hot water can be obtained anytime, anywhere.
[0005] However, in this type of thermos, the battery is fixedly mounted on the bottom of the thermos, and the heating element is then installed on the fixed bracket. The heating element is attached to the bottom of the thermos, so the heating element and the battery are in the same space. The heat generated by the heating element will directly act on the battery. If the battery is in a high-temperature environment, its capacity will decrease due to the high temperature, resulting in a reduced battery life. High temperature environment will also accelerate battery aging, shorten its lifespan, and cause battery swelling, leakage, and other problems.
[0006] Secondly, because the battery and heating device are mounted on a fixed bracket, the bottom of the thermos is very thick (generally around 6cm thick), which compresses the volume of the thermos. As a result, the internal volume of the thermos is further compressed during use due to the fixed bracket, making the space inside the thermos smaller and inconvenient to use. Utility Model Content
[0007] This invention provides a power-heated thermos cup to solve the above-mentioned technical problems.
[0008] To achieve the above objectives, this utility model provides a power-heated thermos cup, comprising:
[0009] The bottle body has a double-layered shell;
[0010] The mounting shell is installed on the outside of the double-layer shell and forms a first mounting cavity between itself and the bottle body;
[0011] The power supply is located inside the first mounting cavity;
[0012] The bottom cap is installed at the bottom of the bottle body and forms a second mounting cavity with the bottom of the bottle body;
[0013] A heating element is disposed in the second mounting cavity and is electrically connected to the power supply.
[0014] Preferably, the double-layered shell comprises:
[0015] The first housing has a receiving cavity at one end for containing liquid;
[0016] The second housing is fitted over the first housing and forms a vacuum cavity between the two housings. The mounting shell is installed over the second housing and forms the first mounting cavity between the second housing and the bottom cover.
[0017] Preferably, the outer periphery of the second housing is recessed inward to form a clearance space, and the mounting shell is installed in the clearance space and completely covers the clearance space.
[0018] Preferably, the power source is a flexible, thin-film battery, a vertically mounted strip battery, or an environmentally friendly battery.
[0019] Preferably, the power supply is disposed around the first mounting cavity and away from the heating element.
[0020] Preferably, the power-heated thermos cup further includes:
[0021] The first sealing ring is clamped at the connection between the second housing and the mounting housing;
[0022] The second sealing ring is clamped at the connection between the mounting shell and the bottom cover.
[0023] Preferably, the bottom cover extends toward the mounting housing to form a mounting portion;
[0024] The mounting shell and the mounting part have mounting grooves in the corresponding areas;
[0025] The electrically heated thermos also includes:
[0026] The touch screen is fixed at one end to the mounting part and extends into the mounting groove at the other end, completely covering the mounting groove.
[0027] Preferably, the power-heated thermos cup further includes:
[0028] The temperature sensor is located inside the second mounting cavity;
[0029] The charging port is located on the bottom cover;
[0030] A circuit board is disposed in the second mounting cavity. The touch screen, the temperature sensor, the charging port and the heating element are all electrically connected to the circuit board. One end of the wire is installed on the power supply, and the other end extends through the first mounting cavity into the second mounting cavity and is electrically connected to the circuit board.
[0031] Preferably, the bottom of the bottle body is provided with a first positioning post, and the first positioning post is provided with a screw hole;
[0032] The bottom cover is provided with a second positioning post, the second positioning post has a positioning hole, one end of the external fastener abuts against the bottom cover, and the other end passes through the positioning hole and is threaded to the screw hole;
[0033] The electrically heated thermos also includes:
[0034] A heat insulation element is disposed on the side of the heating element away from the bottle body.
[0035] Preferably, the power-heated thermos cup further includes:
[0036] The top cover has a first vent hole, a second vent hole, and a vent cavity. The first vent hole and the second vent hole are both connected to the vent cavity. The first vent hole is connected to the receiving cavity, and the second vent hole is connected to the outside. The top cover has a positioning protrusion located inside the vent cavity and on the axis of the first vent hole.
[0037] An elastic element is located inside the accommodating cavity, with one end fixedly connected to the positioning protrusion;
[0038] A blocking member is fixedly connected to the end of the elastic member away from the positioning protrusion, wherein the elastic member generates elastic force to block the first vent hole.
[0039] The electric heating thermos cup proposed in this utility model has the following beneficial effects:
[0040] The electric heating thermos cup proposed in this utility model has a power supply located in the first mounting cavity and the heating element located in the second mounting cavity. This prevents the heat generated by the heating element from being conducted to the power supply, thereby protecting the power supply from the heat of the heating element and ensuring that the power supply can be used normally.
[0041] Secondly, the mounting shell is installed on the outside of the double-layer shell, so that the heat from the hot water in the thermos will not be conducted to the power source, further preventing the power source from aging or losing capacity due to heat.
[0042] Meanwhile, by placing the power supply and heating element in the first and second mounting cavities respectively, the reliance on external fixing brackets is avoided, thus simplifying the overall structure, reducing the number of structural layers at the bottom of the bottle, and increasing the effective volume inside the bottle. Attached Figure Description
[0043] Figure 1 This is a schematic diagram of the structure of the power-heated thermos cup of this utility model;
[0044] Figure 2 This is an exploded view of the electric heating thermos cup of this utility model;
[0045] Figure 3 for Figure 2 A schematic diagram of the structure of the middle bottle;
[0046] Figure 4 This is a schematic diagram of the power supply structure in one embodiment;
[0047] Figure 5 This is a schematic diagram of the power supply (ring-shaped battery) in another embodiment;
[0048] Figure 6 This is a schematic diagram of the power supply (vertically mounted strip battery) in another embodiment;
[0049] Figure 7 This is a schematic diagram of the power supply (sheet battery) in another embodiment;
[0050] Figure 8 for Figure 1 A cross-sectional view of a thermos cup heated by a medium-powered electric source;
[0051] Figure 9 for Figure 8 Enlarged view of section A in the middle;
[0052] Figure 10 for Figure 8 Enlarged view of section B;
[0053] Figure 11 for Figure 8 Enlarged view of section C.
[0054] In the picture:
[0055] 100. Electric heating thermos cup;
[0056] 110. Bottle body; 111. First housing; 111a. Receiving cavity; 112. Second housing; 112a. Vacuum cavity; 112b. Clearance space; 113. First positioning post; 113a. Screw hole;
[0057] 120, mounting housing; 120a, first mounting cavity; 120c, mounting slot;
[0058] 130. Power supply;
[0059] 140. Bottom cover; 140a. Second mounting cavity; 141. Mounting part; 142. Second positioning post; 142a. Positioning hole;
[0060] 150. Heating element;
[0061] 160. First sealing ring; 161. Second sealing ring;
[0062] 170. Touchscreen display;
[0063] 180. Thermo-sensing head;
[0064] 190. Charging port; 191. Circuit board; 192. Heat insulation component;
[0065] 200, Top cover; 200a, First vent hole; 200b, Second vent hole; 200c, Vent chamber; 201, Positioning protrusion;
[0066] 210. Elastic component; 211. Blocking component. Detailed Implementation
[0067] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0068] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0069] This utility model proposes a power-heated thermos cup 100, comprising:
[0070] The bottle body is 110 and has a double-layered shell.
[0071] Mounting shell 120 is mounted on the outside of the double-layer shell and forms a first mounting cavity 120a between it and the bottle body 110;
[0072] Power supply 130 is located inside the first mounting cavity 120a;
[0073] The bottom cap 140 is installed at the bottom of the bottle body 110 and forms a second mounting cavity 140a with the bottom of the bottle body 110;
[0074] The heating element 150 is disposed in the second mounting cavity 140a and is electrically connected to the power supply 130.
[0075] Please refer to Figures 1-11 In this embodiment, since the power supply 130 is located in the first mounting cavity 120a and the heating element 150 is located in the second mounting cavity 140a, the heat generated by the heating element 150 will not be conducted to the power supply 130, thereby protecting the power supply 130 from being affected by the heat of the heating element 150 and ensuring its normal operation.
[0076] Secondly, the mounting shell 120 is installed on the outside of the double-layer shell, so that the heat from the hot water in the thermos cup 100 is not conducted to the power supply 130, further protecting the power supply 130 from the effects of heat, which may cause aging, capacity reduction and other problems.
[0077] Meanwhile, by placing the power supply 130 and the heating element 150 in the first mounting cavity 120a and the second mounting cavity 140a respectively, the use of a fixed bracket for fixation is avoided, thereby reducing the thickness of the bottom of the bottle body 110 and increasing the internal volume of the power-heated thermos cup 100.
[0078] Secondly, the first mounting cavity 120a and the second mounting cavity 140a are two independent cavities, so that the heat in the second mounting cavity 140a will not be released into the first mounting cavity 120a, thereby further avoiding the power supply 130 from being affected by heat.
[0079] It should be noted that the mounting shell 120 is generally a hollow cylindrical shape. The heating element 150 is a heating wire, heating plate, heating coil, etc. In this embodiment, a heating coil is used. The heating element 150 is installed into the second mounting cavity 140a by adhesive or screw fixing. The bottom cover 140 is generally a circular plate shape, and protrudes upward near the edge of the bottle body 110 to form an annular convex plate, and abuts against the bottle body 110 through the annular convex plate. The bottle body 110 is partially housed in the space formed by the annular convex plate.
[0080] The bottom thickness of the bottle body using this structure can reach about 1cm, thereby increasing the effective volume inside the bottle.
[0081] Preferably, the double-layered shell comprises:
[0082] The first housing 111 has a receiving cavity 111a for containing liquid at one end;
[0083] The second housing 112 is sleeved outside the first housing 111 and forms a vacuum cavity 112a between the second housing 111 and the first housing 111. The mounting shell 120 is mounted outside the second housing 112 and forms the first mounting cavity 120a between the second housing 112 and the bottom cover 140.
[0084] Please refer to Figures 1-11 In this embodiment, the first shell 111 is the inner shell of a double-layered shell and is generally cylindrical, with one end recessed inward to form a liquid-containing cavity 111a. The second shell 112 is generally annular and is fitted over the first shell 111, with a gap between them. A vacuum cavity 112a is formed between the first shell 111 and the second shell 112. The first shell 111 and the second shell 112 are integrally formed or subsequently welded together.
[0085] By forming a vacuum cavity 112a between the first housing 111 and the second housing 112, the liquid in the cavity 111a, even if it has a temperature, will not conduct heat through the first housing 111 to the second housing 112 and then through the second housing 112 to the power supply 130, thereby protecting the power supply 130 from aging faster or experiencing reduced battery life due to heat.
[0086] In other embodiments, a heat-insulating coating or a heat-insulating layer may be applied to the side of the power supply 130 near the second housing 112 to further prevent heat transfer to the power supply 130.
[0087] Preferably, the outer periphery of the second housing 112 is recessed inward to form a clearance space 112b, and the mounting shell 120 is installed in the clearance space 112b and completely covers the clearance space 112b.
[0088] Please refer to Figures 1-11 In this embodiment, the clearance space 112b allows the mounting shell 120 to be better installed on the outer peripheral surface of the second shell 112. Since the clearance space 112b is formed by the inward concavity of the outer peripheral surface of the second shell 112, the mounting shell 120 will not have any surface protrusion, thus ensuring the integrity and aesthetics of the power-heated thermos cup 100.
[0089] Meanwhile, the mounting housing 120 is installed within the clearance space 112b, thus preventing the mounting housing 120 from detaching from the clearance space 112b. At the same time, the mounting housing 120 completely covers the clearance space 112b, so that the first mounting cavity 120a is completely sealed, preventing the power supply 130 from being damaged by external heat and foreign objects.
[0090] Preferably, the power source 130 is a flexible sheet battery, a vertically mounted strip battery, or an environmentally friendly battery.
[0091] Please refer to Figures 1-11 In this embodiment, the power supply 130 is one of a flexible thin-film battery, a vertically mounted strip battery, or an environmentally friendly battery. The environmentally friendly battery is a rechargeable lithium battery. The power supply 130 can be installed around the first mounting cavity 120a to ensure the power supply 130's endurance. At the same time, the first mounting cavity 120a can be used to a greater extent to install the power supply 130, thereby maximizing the size of the power supply 130.
[0092] Preferably, the power supply 130 is disposed around the first mounting cavity 120a and away from the heating element 150.
[0093] Please refer to Figures 1-11 In this embodiment, by installing the power supply 130 in the first mounting cavity 120a and positioning the power supply 130 away from the heating element 150, the heat effect of the heating element 150 on the power supply 130 is further reduced, so as to ensure that the power supply 130 can provide energy better.
[0094] The power supply 130 is fixed in the first mounting cavity 120a by means of adhesive or other methods.
[0095] Preferably, the power-heated thermos cup 100 further includes:
[0096] The first sealing ring 160 is clamped at the connection between the second housing 112 and the mounting housing 120;
[0097] The second sealing ring 161 is clamped at the connection between the mounting shell 120 and the bottom cover 140.
[0098] Please refer to Figures 1-11 In this embodiment, since the first sealing ring 160 is sandwiched at the connection between the second housing 112 and the mounting housing 120, the second housing 112 and the mounting housing 120 are sealed, thus avoiding the gap between the second housing 112 and the mounting housing 120 from affecting the sealing performance of the first mounting cavity 120a.
[0099] Since the second sealing ring 161 is clamped at the connection between the mounting shell 120 and the bottom cover 140, and a second mounting cavity 140a is formed between the bottom cover 140 and the bottle body 110, the sealing performance of the first mounting cavity 120a formed between the second shell 112, the mounting shell 120 and the bottom cover 140 is better, and the first mounting cavity 120a and the second mounting cavity 140a are independent, thereby avoiding the heat in the second mounting cavity 140a from affecting the power supply 130 in the first mounting cavity 120a.
[0100] It should be noted that both the first sealing ring 160 and the second sealing ring 161 are annular rings, and both are made of elastic materials, such as rubber, silicone, etc.
[0101] Preferably, the bottom cover 140 extends toward the mounting housing 120 to form a mounting portion 141;
[0102] The mounting shell 120 has a mounting groove 120c in the area corresponding to the mounting part 141;
[0103] The electrically heated thermos cup 100 also includes:
[0104] The touch display screen 170 is fixed at one end to the mounting part 141 and extends into the mounting groove 120c at the other end, completely covering the mounting groove 120c.
[0105] Please refer to Figures 1-11 In this embodiment, the temperature of the liquid in the accommodating cavity 111a can be displayed by the touch screen 170, and the heating element 150 can be switched on and off by the touch screen 170 to heat and keep the liquid in the accommodating cavity 111a warm.
[0106] The touch display screen 170 completely covers the mounting groove 120c, thus ensuring the sealing of the first mounting cavity 120a. Furthermore, a sealing ring is provided between the touch display screen 170 and the mounting groove 120c to further improve the sealing of the first mounting cavity 120a.
[0107] It should be further noted that the touch display 170 is electrically connected to the circuit board 191 via a wire, thereby ensuring the sealing of the first mounting cavity 120a.
[0108] Preferably, the power-heated thermos cup 100 further includes:
[0109] A temperature sensor 180 is located inside the second mounting cavity 140a;
[0110] The charging port 190 is located on the bottom cover 140;
[0111] Circuit board 191 is disposed in the second mounting cavity 140a. The touch screen 170, the temperature sensor 180, the charging port 190 and the heating element 150 are all electrically connected to circuit board 191. One end of the wire is installed on the power supply 130, and the other end extends through the first mounting cavity 120a into the second mounting cavity 140a and is electrically connected to circuit board 191.
[0112] Please refer to Figures 1-11In this embodiment, the temperature of the liquid in the accommodating cavity 111a can be accurately detected by the temperature sensor 180 and displayed on the touch screen 170.
[0113] The power supply 130 in the first mounting cavity 120a can be charged through the charging port 190 for repeated use.
[0114] The circuit board 191 can control the operation of various components to ensure the normal use of the power supply heating thermos cup 100.
[0115] It should be noted that, since the power supply 130 is connected to the circuit board 191 via wires, the first mounting cavity 120a can be electrically connected to the circuit board 191 in the second mounting cavity 140a via two wires, thus ensuring the sealing of the first mounting cavity 120a. This isolates the power supply 130 from the heating element 150, ensuring that the power supply 130 is not affected by the heat of the heating element 150.
[0116] Preferably, the bottom of the bottle body 110 is provided with a first positioning post 113, and the first positioning post 113 is provided with a screw hole 113a;
[0117] The bottom cover 140 is provided with a second positioning post 142, the second positioning post 142 is provided with a positioning hole 142a, one end of the external fastener abuts against the bottom cover 140, and the other end passes through the positioning hole 142a and is threadedly fixed to the screw hole 113a.
[0118] The electrically heated thermos cup 100 also includes:
[0119] The heat insulation element 192 is disposed on the side of the heating element 150 away from the bottle body 110.
[0120] Please refer to Figures 1-11 In this embodiment, the temperature sensor 180, circuit board 191, and heating element 150 are installed into the second mounting cavity 140a. During assembly, the first sealing ring 160 is first installed into the clearance space 112b, and then the mounting shell 120 is fitted onto the second shell 112, with one end of the mounting shell 120 abutting against the first sealing ring 160. The second sealing ring 161 is fixed to the bottom cover 140, the touch display screen 170 is installed onto the mounting part 141 of the bottom cover 140, and the bottom cover 140 is installed to the bottom of the bottle body 110. The bottom cover 140 abuts against the mounting shell 120 and the bottom of the bottle body 110, and engages with the mounting shell 120. Then, one end of the external fastener (screw or bolt) abuts against the bottom cover 140, and the other end passes through the positioning hole 142a and is threaded into the screw hole 113a, thereby completing the assembly.
[0121] Preferably, the power-heated thermos cup 100 further includes:
[0122] The upper cover 200 has a first vent 200a, a second vent 200b, and a venting cavity 200c. The first vent 200a and the second vent 200b are both connected to the venting cavity 200c. The first vent 200a is connected to the receiving cavity 111a, and the second vent 200b is connected to the outside. The upper cover 200 has a positioning protrusion 201, which is located inside the venting cavity 200c and on the axis of the first vent 200a.
[0123] The elastic element 210 is located inside the accommodating cavity 111a, and one end is fixedly connected to the positioning protrusion 201;
[0124] The blocking member 211 is fixedly connected to the end of the elastic member 210 away from the positioning protrusion 201, wherein the elastic member 210 generates elastic force to block the first vent hole 200a with the blocking member 211.
[0125] Please refer to Figures 1-11 In this embodiment, when the pressure is released, the water vapor pressure in the accommodating cavity 111a is greater than the pressure in the venting cavity 200c, thereby pushing the blocking member 211 closer to the positioning protrusion 201. The first venting hole 200a communicates with the venting cavity 200c and the second venting hole 200b, venting the gas. The elastic member 210 is compressed. After the pressure is released, the elastic member 210 generates elastic force, pushing the blocking member 211 away from the positioning protrusion 201, thereby blocking the first venting hole 200a to achieve the sealing of the accommodating cavity 111a.
[0126] To avoid the problem that the top cover 200 is difficult to unscrew due to excessive pressure, and to avoid the problem that the top cover 200 is deformed due to excessive pressure in the accommodating cavity 111a.
[0127] It should be noted that the elastic element 210 is a spring, the blocking element 211 is roughly a conical or frustum-shaped rubber pad; the top cover 200 is roughly a cover shape, the first vent hole and the second vent hole are both through holes, the vent cavity is a hollow structure, and the positioning protrusion is roughly a conical frustum-shaped.
[0128] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A power heating vacuum cup, characterized in that, The utility model provides a power heating vacuum cup, which comprises a bottle body, a mounting shell, a power supply, a bottom cover and a heating element. The bottle body has a double-layer shell. The mounting shell is mounted outside the double-layer shell and forms a first mounting cavity with the bottle body. The power supply is arranged in the first mounting cavity. The bottom cover is mounted at the bottom of the bottle body and forms a second mounting cavity with the bottom of the bottle body. The heating element is arranged in the second mounting cavity and is electrically connected with the power supply.
2. The power heating thermos cup of claim 1, wherein, The double-layer shell comprises a first shell and a second shell. The first shell has a receiving cavity for containing liquid. The second shell is arranged outside the first shell and forms a vacuum cavity with the first shell.
3. The power heating thermos cup of claim 2, wherein, The mounting shell is mounted outside the second shell and forms the first mounting cavity with the second shell and the bottom cover.
4. The power heating thermos cup of claim 1, wherein, The second shell has an inwardly recessed peripheral surface forming an avoiding space.
5. The power heating thermos cup of claim 4, wherein, The mounting shell is mounted in the avoiding space and completely covers the avoiding space.
6. The power heating thermos cup of claim 2, wherein, The power supply is a flexible sheet-type battery, a vertical strip-type battery or an environmentally friendly battery. The power supply is arranged in the first mounting cavity and is away from the heating element. The power heating vacuum cup further comprises a first sealing ring and a second sealing ring.
7. The power heating thermos cup of claim 2, wherein, The first sealing ring is arranged at the connection between the second shell and the mounting shell. The second sealing ring is arranged at the connection between the mounting shell and the bottom cover. The bottom cover has an installation portion extending towards the mounting shell. The mounting shell has an installation groove corresponding to the installation portion.
8. The power heating thermos cup of claim 7, wherein, The power heating vacuum cup further comprises a touch display screen. One end of the touch display screen is fixed to the installation portion, and the other end extends into the installation groove and completely covers the installation groove. The power heating vacuum cup further comprises a temperature sensing head, a charging port, a circuit board, a lead and a heat insulation element. The temperature sensing head is arranged in the second mounting cavity.
9. The power heating thermos cup of claim 1, wherein, The charging port is arranged on the bottom cover. The circuit board is arranged in the second mounting cavity. The touch display screen, the temperature sensing head, the charging port and the heating element are electrically connected with the circuit board. One end of the lead is mounted on the power supply, and the other end penetrates through the first mounting cavity and extends into the second mounting cavity and is electrically connected with the circuit board.
10. The power heating thermos cup of claim 2, wherein, The bottom of the bottle body has a first positioning column. The bottom cover has a second positioning column. The second positioning column has a positioning hole. One end of an external fixing member abuts against the bottom cover, and the other end penetrates through the positioning hole and is threadedly fixed with the screw hole. The heat insulation element is arranged on the side of the heating element away from the bottle body.