CN109984597B

CN109984597B - Liquid heater

Info

Publication number: CN109984597B
Application number: CN201910247990.1A
Authority: CN
Inventors: 朱泽春; 孙立刚
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2021-02-02
Anticipated expiration: 2039-03-29
Also published as: CN109984597A

Abstract

The invention discloses a liquid heater, which is characterized in that: the multifunctional thermos bottle comprises an upper shell, a foldable inner container and a bottom shell, wherein the upper shell is provided with a bottle opening, a bottle cover is arranged at the bottle opening, the upper end of the inner container is connected with the upper shell, a heating assembly is arranged on the inner container, the lower end of the inner container is connected with the bottom shell, when the inner container is folded, one of the upper shell and the bottom shell is sleeved with the other of the upper shell and the bottom shell, and the inner container is hidden between the upper shell and the bottom shell. The upper shell is provided with the kettle opening and the kettle cover, so that liquid in the inner container can be poured conveniently without disassembling the upper shell and pouring the liquid. When the inner container is folded, the inner container is not exposed and protected by the upper shell, and the inner container is possibly damaged only when the upper shell is broken, so that the structure reduces the possibility of the inner container breaking and is beneficial to ensuring the reliability of the inner container.

Description

Liquid heater

Technical Field

The invention relates to the field of household appliances, in particular to a liquid heater.

Background

A liquid heater is a device for heating liquid, and comprises a boiled water pot, a health preserving pot and a soybean milk machine.

At present, Chinese patent with publication number CN104095533B discloses an electric kettle with an elastic kettle body, which comprises a kettle body, a bottom shell and an electric heating plate; the kettle body is made of elastic material and can be folded from top to bottom, the upper end opening of the kettle body is a kettle opening, the lower end of the kettle body is fixed with the electric heating plate, and the bottom shell is fixed on the electric heating plate. The kettle body is an inner container for containing liquid, when the liquid heater is folded and stored, the folded inner container is positioned right above the electric heating plate and exposed outside, and is easy to scratch and wear, so that the inner container leaks water. In addition, the inner container is exposed outside, so that the appearance experience of a user is influenced.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention provides a liquid heater, which has the advantages of hiding the inner container and reducing the damage of the inner container.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a liquid heater, includes epitheca, folding inner bag, drain pan, the epitheca has the kettle mouth, and kettle mouth department is equipped with the pot lid, and the inner bag upper end is connected with the epitheca, be equipped with heating element on the inner bag, the inner bag lower extreme is connected with the drain pan, and when the inner bag was folding, one of them suit of epitheca and drain pan was outside another, the inner bag is hidden between epitheca and drain pan.

Preferably, the upper shell is provided with a containing cavity, when the inner container is folded, the upper shell is sleeved outside the bottom shell, and the inner container is hidden between the wall of the containing cavity and the bottom shell.

Preferably, the top of the bottom shell is provided with an avoiding cavity for accommodating the heating assembly, and when the inner container is folded, the avoiding cavity enters the accommodating cavity.

Preferably, the lower end of the upper shell is provided with a mounting opening, when the liner is folded, the bottom shell enters the accommodating cavity through the mounting opening, and the bottom of the bottom shell is provided with a lower cover covering the mounting opening.

Preferably, the outer side wall of the bottom shell is provided with an electric connection part, and when the inner container is folded, the electric connection part is accommodated in the accommodating cavity.

Preferably, the inner container comprises an upper ring fixed on the upper shell, a lower ring fixed on the bottom shell, and a bending part connecting the upper ring and the lower ring.

Preferably, the inner diameter of the upper ring is a, the inner diameter of the lower ring is b, and the wall thickness of the lower ring is d2 and d2< (a-b)/2.

Preferably, the wall thickness of the bent part is d0, and d0 is less than 1.5 mm.

Preferably, the upper end of the inner container is provided with an opening, and the edge of the opening is hermetically fixed on the wall of the accommodating cavity.

Preferably, the lower end of the inner container is provided with a connecting port, the bottom shell is fixed with the heating assembly through a fastener, and the edge of the connecting port is clamped between the heating assembly and the bottom shell.

In summary, compared with the prior art, the beneficial effects of the invention are as follows:

1. when the inner container is folded, the inner container is not exposed and is protected by the upper shell, and the inner container is likely to be damaged only when the upper shell is broken, so that the possibility of the inner container being broken is reduced, and the reliability of the inner container is favorably ensured;

2. when the inner container is folded, the avoiding cavity enters the accommodating cavity to ensure that the upper end of the bottom shell completely enters the upper shell, so that the structure of the folded liquid heater is compact;

3. the upper shell is used for accommodating the electric connection part, so that the electric connection part is not exposed in the air, and the possibility of rusting the electric connection part in a humid environment is reduced;

4. the upper ring and the upper shell are separated by the bending part, so that the connection of the upper ring and the upper shell is prevented from interfering the connection of the lower ring and the bottom shell;

5. the upper shell is provided with the kettle opening and the kettle cover, so that liquid in the inner container can be poured conveniently without disassembling the upper shell and pouring the liquid.

Drawings

FIG. 1 is an exploded view of an embodiment;

FIG. 2 is a first cross-sectional view of the embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a second cross-sectional view of the embodiment;

FIG. 5 is an enlarged view of the portion B of FIG. 4;

FIG. 6 is a schematic structural view of the bottom cover;

FIG. 7 is a first structural diagram of a heating assembly;

FIG. 8 is a second block diagram of the heating assembly;

FIG. 9 is a partial sectional view of the embodiment;

FIG. 10 is an enlarged view of section C of FIG. 9;

FIG. 11 is a folded cross-sectional view of the embodiment;

FIG. 12 is an enlarged view of section D of FIG. 11;

FIG. 13 is a first structural view of the opening edge and the inner wall of the upper shell;

FIG. 14 is a second block diagram of the opening edge and the inner wall of the upper shell;

fig. 15 is a third structural diagram of the opening edge and the inner wall of the upper case.

Reference numerals: 1. an upper shell; 2. an inner container; 3. a bottom case; 31. a thermally insulated chassis; 32. a base body; 33. a bottom cover; 4. a heating assembly; 41. a steel disc; 42. heating the plate; 421. a heat conducting plate; 422. heating a tube; 5. a kettle mouth; 6. a connecting port; 7. a connecting ring; 8. a groove; 9. a convex ring; 10. an avoidance cavity; 11. a fastener; 12. a clamping block; 13. a card slot; 14. a transition piece; 15. a fixing member; 16. a stud; 17. an opening; 18. a pot lid; 19. an accommodating chamber; 191. an anti-overflow space; 20. a mounting frame; 201. a fixing ring; 202. a snap ring; 203. looping ribs; 204. an outer ring; 205. an inner ring; 21. a limiting block; 22. a limiting groove; 23. an n-type gap; 231. a ring groove; 232. a clamping gap; 24. flanging; 25. a protrusion; 261. ring fitting; 262. a lower ring; 263. a bending section; 27. an electrical connection portion; 28. a lower cover; 29. an installation port; 30. a circular groove; 35. mounting holes; 36. clamping; 37. a bump; 38. and a ring-shaped bottom foot.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1, a liquid heater includes an upper case 1, a foldable inner container 2, a bottom case 3, and a heating assembly 4.

Referring to fig. 2 and 3, the upper end of the inner container 2 is connected with the upper shell 1, the heating component 4 is arranged at the lower end of the inner container 2, and the lower end of the inner container 2 is connected with the bottom shell 3. The inner container 2 is made of silica gel materials, when the inner container 2 is folded, the upper shell 1 is sleeved outside the bottom shell 3, and the inner container 2 is hidden between the upper shell 1 and the bottom shell 3. Specifically, have in the epitheca 1 and hold chamber 19, when inner bag 2 was folding, the epitheca 1 cover was outside drain pan 3, and inner bag 2 is hidden and is held 19 chamber walls in the chamber and between the drain pan 3. When the inner container 2 is folded, the inner container 2 is not exposed and is protected by the upper shell 1, and only when the upper shell 1 is broken, the inner container 2 is possibly damaged, so that the structure reduces the possibility of breakage of the inner container 2 and is beneficial to ensuring the reliability of the inner container 2.

Or, when the inner container 2 is folded, the bottom shell 3 is sleeved outside the upper shell 1, and the inner container 2 is hidden between the upper shell 1 and the bottom shell 3.

Preferably, the top of the bottom shell 3 is provided with an avoiding groove for accommodating the heating assembly 4, and when the inner container 2 is folded, the avoiding cavity 10 enters the accommodating cavity 19 to ensure that the upper end of the bottom shell 3 completely enters the upper shell 1, thereby ensuring the compact structure of the folded liquid heater.

Preferably, the upper shell 1 has a mounting opening 29 at the lower end thereof, the bottom of the bottom shell 3 has a lower cover 28, when the liner 2 is folded, the bottom shell 3 enters the accommodating cavity 19 through the mounting opening 29, and the lower cover 28 covers the mounting opening 29, so that the mounting opening 29 is closed. At this moment, inner bag 2 between epitheca 1 and the drain pan 3 is sheltered from by lower cover 28 for from down the invisible of inner bag 2 outward appearance when up looking, reinforcing user experience, and lower cover 28 also plays the effect of protection inner bag 2, further guarantees inner bag 2's reliability.

Preferably, the outer side wall of the bottom shell 3 is provided with an electrical connection portion 27, and when the inner container 2 is folded, the electrical connection portion 27 is received in the receiving cavity 19. By housing the electrical connection portion 27 in the upper case 1, the electrical connection portion 27 is not exposed to the air, and the possibility of corrosion of the electrical connection portion 27 by a humid environment is reduced.

Preferably, the inner container 2 comprises an upper ring 261 fixed to the upper shell 1, a lower ring 262 fixed to the bottom shell 3, and a curved portion 263 connecting the upper ring 261 and the lower ring 262. The inner container 2 is bent by the bending part 263 to realize that the lower ring 262 is folded into the upper ring 261, and when the inner container 2 is folded, the top end of the lower ring 262 is lower than the top end of the upper ring 261. Separated by a curved portion 263 to avoid interference of the connection of the upper ring 261 with the upper shell 1 with the connection of the lower ring 262 with the bottom shell 3.

The inner diameter of the upper ring 261 is a, the inner diameter of the lower ring 262 is b, the wall thickness of the lower ring 262 is d2, d2< (a-b)/2. The parameters of the upper ring 261 and the lower ring 262 are defined to ensure that the lower ring 262 is folded into the upper ring 261 from bottom to top. The wall thickness of the bent portion 263 is d0, and d0 is less than 1.5mm, so as to ensure that the bent portion 263 can be repeatedly bent.

Preferably, the inner container 2 has an opening 17 at the upper end and a connection port 6 at the lower end, and the edge of the opening 17 is hermetically fixed on the wall of the accommodating cavity 19 to limit the water in the inner container 2 from leaking out.

Preferably, the lower end of the inner container 2 is provided with a connecting port 6, the bottom shell 3 is fixed with the heating assembly 4 through a fastener 11, and the edge of the connecting port 6 is clamped between the heating assembly 4 and the bottom shell 3. The edge of the connecting port 6 is clamped through the heating component 4 and the bottom shell 3, so that the heating component 4 is fixedly installed, the sealing of the connecting port 6 is guaranteed, and a sealing ring is not required.

The upper shell 1 has various structures, in the first structure, the top of the upper shell 1 is provided with a kettle opening 5, and the kettle opening 5 is covered on the kettle opening 5; in the second structure, the top of epitheca 1 is sealed to can dismantle with 2 upper ends of inner bag and be connected, when inner bag 2 need pour water, need earlier dismantle epitheca 1 from inner bag 2.

Example two:

referring to fig. 2 and 3, a foldable liquid heater comprises a soft inner container 2, a heating assembly 4 and a bottom shell 3.

The bottom shell 3 is fixed with the heating component 4 through a fastener 11, the upper end of the inner container 2 is provided with an opening 17, the edge of the opening 17 is hermetically fixed in the upper shell 1, the lower end of the inner container 2 is provided with a connecting port 6, the heating component 4 is installed at the connecting port 6, and the edge of the connecting port 6 is clamped and sealed between the heating component 4 and the bottom shell 3.

When inner bag 2 is soft, the border that presss from both sides tight connector 6 through heating element 4 and drain pan 3 just can realize the sealed of connector 6 department, and simultaneously, the border of connector 6 plays the effect the same with the sealing washer for need not to use the sealing washer, and then practiced thrift sealed cost.

In the first structure, the edge of the connecting port 6 is the wall of the inner container 2 at the connecting port 6, the bottom shell 3 is sleeved outside the heating component 4, and the inner wall of the bottom shell 3 and the outer side wall of the heating component 4 clamp and seal the edge of the connecting port 6.

In the second configuration, the rim of the connection port 6 is turned inwards to form a connection ring 7, the connection ring 7 being clamped and sealed circumferentially between the heating assembly 4 and the bottom shell 3. The heating assembly 4 is pressed against the top surface of the connection ring 7 and the bottom shell 3 is pressed against the bottom surface of the connection ring 7. The connecting ring 7 is formed by inward turning of the edge of the connecting port 6, so that the contact area between the edge of the connecting port 6 and the heating assembly 4 and the bottom shell 3 is increased, and the sealing effect is enhanced.

The top of the bottom shell 3 is provided with a groove 8, and the bottom surface of the connecting ring 7 is provided with a convex ring 9 embedded into the groove 8. When the connecting ring 7 is clamped and sealed between the heating assembly 4 and the bottom shell 3, the convex ring 9 is embedded into the groove 8, and the horizontal relative position of the connecting port 6 and the bottom shell 3 is limited through the matching of the convex ring 9 and the groove 8, so that the maintenance of the opening state of the connecting port 6 is facilitated, and the size of the connecting port 6 is ensured not to change.

Preferably, referring to fig. 4 and 5, the heating assembly 4 comprises a steel dish 41, and a heating plate 42 fixed on the bottom surface of the steel dish 41, the connecting ring 7 is clamped and sealed between the outer edge of the steel dish 41 and the outer edge of the bottom shell 3, and the heating plate 42 is located at the center of the bottom surface of the steel dish 41 to avoid interference with the clamping and sealing. Through the clamping seal between the steel disc 41 and the bottom shell 3, the direct contact between the connecting ring 7 and the heating plate 42 can be avoided, so that the possibility that the connecting ring 7 is burnt out is reduced, and the sealing reliability of clamping and sealing the connecting ring 7 between the connecting ring 7 and the heating plate 42 is ensured.

Preferably, the top of the bottom shell 3 is provided with an avoiding cavity 10 for accommodating the heating plate 42, and the inner wall of the avoiding cavity 10 is not in contact with the heating plate 42, so as to reduce the possibility that the bottom of the bottom shell 3 is burned by the heating plate 42.

Referring to fig. 5, 7 and 8, the outer periphery of the steel disc 41 is provided with a downwardly extending latch 12, the top surface of the connection ring 7 is provided with a catch 13 into which the latch 12 is inserted, and the catch 13 is formed by pressing the latch 12 against the top surface of the connection ring 7. Through the cooperation of the clamping blocks 12 and the clamping grooves 13, the sealing length of the connecting ring 7 and the steel disc 41 is increased, so that the sealing effect of the steel disc 41 and the connecting ring 7 is enhanced.

The bottom surface of the outer periphery of the steel disc 41 is provided with a convex rib, when the connecting ring 7 is clamped between the steel disc 41 and the bottom shell 3, the convex rib is pressed on the top surface of the connecting ring 7, so that the sealing effect is enhanced, and the possibility of water in the inner container 2 from a gap between the connecting ring 7 and the steel disc 41 is reduced.

Preferably, the heating plate 42 comprises a heat conducting plate 421 fixed on the bottom surface of the steel plate 41, a heating pipe 422 fixed at the outer periphery of the bottom surface of the heat conducting plate 421, and a transition piece 14 fixed on the bottom surfaces of the heat conducting plate 421 and the heating pipe 422, wherein the transition piece 14 is a metal aluminum plate. A stud 16 for matching with the fastener 11 is fixed at the outer periphery of the bottom surface of the transition piece 14, and the stud 16 is positioned right below the heating pipe 422. The fastener 11 is a screw for threaded connection within the stud 16.

By arranging the stud 16 below the heating pipe 422, the stress point of the heating plate 42 is close to the outer periphery of the steel disc 41, the pressing effect of the outer periphery of the steel disc 41 on the top surface of the connecting ring 7 is enhanced, and the sealing effect is further improved. In addition, the stud 16 is separated from the heat pipe 422 by the transition piece 14, so as to prevent the stud 16 from being directly fixed on the bottom surface of the heat pipe 422, thereby ensuring the stability of the installation of the stud 16.

Referring to fig. 1 and 3, bottom case 3 includes, in order from top to bottom, an insulating bottom 31, a base body 32, and a bottom cover 33, bottom cover 33 is fixed to insulating bottom 31 by fixing members 15, and base body 32 is sandwiched between insulating bottom 31 and bottom cover 33. The heat insulation chassis 31 separates the base body 32 from the heating assembly 4, and only under the condition that the heat insulation chassis 31 is damaged, the base body 32 can be burnt out by the heating assembly 4, so that the possibility of deformation and damage of the base body 32 at high temperature is reduced; in addition, when the liquid heater is placed, the bottom of the bottom case 3 is easily worn, and the wear is concentrated on the bottom cover 33 to protect the base body 32. The heat insulation chassis 31 and the bottom cover 33 can be replaced, and the replacement cost is low.

The fastener 11 is arranged on the heat insulation bottom plate 31, the heat insulation bottom plate 31 is fixed with the heating assembly 4 through the fastener 11, and the edge of the connecting port 6 is clamped and sealed between the heating assembly 4 and the heat insulation bottom plate 31. Fasteners 11 are passed from bottom to top through insulating pan 31 to secure insulating pan 31 to heating assembly 4 and also to clamp and seal the edges of connecting port 6.

Preferably, referring to fig. 1 and 6, the bottom cover 33 is provided with a circular groove 30, a plurality of mounting holes 35 for inserting the fixing member 15 are formed in the bottom of the circular groove 30, and a circular foot 38 for shielding the mounting holes 35 is embedded in the circular groove 30. When the bottom cover 33 is fixed with the heat insulation chassis 31 through the fixing piece 15, the fixing piece 15 is located in the mounting hole 35, and the annular foot 38 not only can help to limit the fixing piece 15 to be separated from the mounting hole 35, but also can avoid the mounting hole 35 from being exposed, so that the appearance experience of the bottom cover 33 is improved.

Example three:

referring to fig. 9 and 11, the liquid heater includes an upper case 1 having a receiving cavity 19, a soft inner container 2, and a heating element 4, wherein the upper end of the inner container 2 is fixed to the upper case 1, and the lower end of the inner container 2 is fixed to the heating element 4. The soft inner container 2 can be folded, and when the inner container 2 is folded, the heating component 4 and the soft inner container 2 are both contained in the containing cavity 19; or the inner container 2 can not be folded, and the upper shell 1 always accommodates the heating assembly 4 and the inner container 2 in the accommodating cavity 19.

Specifically, the upper end of the inner container 2 is provided with an opening 17, the edge of the opening 17 is fixed on the inner wall of the accommodating cavity 19 in a sealing manner, the top of the upper shell 1 is provided with a kettle opening 5 communicated with the accommodating cavity 19, and a kettle cover 18 covers the kettle opening 5. The kettle mouth 5 is positioned right above the opening 17 of the inner container 2, and the width of the kettle mouth 5 is less than that of the opening 17 of the inner container 2. The portion of the receiving chamber 19 above the inner container 2 is used for an overflow preventing space 191 for containing water. When the liquid heater is used for boiling water, even if the kettle cover 18 is not covered, the boiling liquid only overflows into the anti-overflow space 191 and splashes onto the inner wall of the anti-overflow space 191, so that the possibility that the user is scalded by the boiling liquid is reduced.

Preferably, a rigid mounting frame 20 is arranged between the inner container 2 and the accommodating cavity 19, and the inner container 2 is fixed with the upper shell 1 through the mounting frame 20, so that the edge of the opening 17 can keep a sealing state with the inner wall of the accommodating cavity 19.

The mounting bracket 20 has three structures, and in the first structure, the mounting bracket 20 comprises a fixing ring 201 sleeved outside the inner container 2, the lower end of the fixing ring 201 is fixed on the outer side wall of the inner container 2, and the upper end of the fixing ring compresses and seals the edge of the opening 17 on the wall of the accommodating cavity 19. Be equipped with screens 36 on the wall that holds chamber 19, the lower extreme joint of solid fixed ring 201 is on screens 36 to the solid fixed ring 201 of restriction breaks away from holding chamber 19, and then guarantees that solid fixed ring 201's upper end compresses tightly opening 17 border.

Specifically, the lower end of the fixing ring 201 has a protrusion 37 to match with the detent 36, and the detent 36 is the detent 12 or the detent 13.

Referring to fig. 9 and 10, the opening 17 is turned inside out to form a flange 24, and the flange 24 covers the top end of the fixing ring 201. When the upper end of the fixing ring 201 presses and seals the edge of the opening 17 on the inner wall of the accommodating cavity 19, the upper end of the fixing ring 201 is not in direct contact with the inner wall of the accommodating cavity 19, so that the inner wall of the accommodating cavity 19 is prevented from being scratched. In addition, through the form of turn-ups 24 parcel, solid fixed ring 201 is difficult for breaking away from with inner bag 2, is favorable to guaranteeing that opening 17 compresses tightly along the solid fixed ring 201 top of cup and seals at holding the chamber 19 inner wall.

Preferably, the mounting frame 20 further includes a clamping ring 202 clamped with the fixing ring 201, a protrusion 25 is provided on the outer side wall of the inner container 2, and the clamping ring 202 is located below the fixing ring 201 and clamped with the lower end of the fixing ring 201. When the fixing ring 201 is clamped with the clamping ring 202, the protrusion 25 is clamped and fixed between the fixing ring 201 and the clamping ring 202, which is beneficial to ensuring that the inner container 2 maintains the opening state and ensuring that the inner diameter of the inner container 2 at the lower end of the fixing ring 201 is kept unchanged.

Preferably, the clamping ring 202 and the fixing ring 201 are provided with a limiting block 21, and two sides of the protrusion 25 are provided with limiting grooves 22 for inserting the limiting block 21. When the joint ring 202 is clamped at the lower end of the fixing ring 201, the limiting ring is inserted into the limiting groove 22, so that the protrusion 25 moves relative to the joint ring 202 and the fixing ring 201, and the protrusion 25 is guaranteed to be clamped and sealed between the joint ring 202 and the fixing ring 201 all the time.

Referring to fig. 11, 13, 14 and 15, in the second structure of the mounting bracket 20, the mounting bracket 20 includes a ring rib 203 fixed on the wall of the accommodating cavity 19, and an outer ring 204 clamped on the wall of the accommodating cavity 19, and the edge of the opening 17 is clamped and sealed between the outer ring 204 and the ring rib 203.

The ring rib 203 protrudes from the inner wall of the accommodating cavity 19 and extends downwards, and the lower end of the ring rib 203 extends into the ring of the outer ring 204 and is opposite to the wall of the inner ring 205 of the outer ring 204. The top surfaces of the ring rib 203 and the outer ring 204 and the wall of the inner ring 205 are provided with a clamping gap 232, the top surface of the outer ring 204 is provided with a ring groove 231 communicated with the clamping gap 232, and the ring groove 231 and the clamping gap 232 are combined to form an n-shaped gap 23 for inserting the edge of the opening 17. When the edge of the opening 17 is clamped by the outer ring 204 and the ring rib 203, the edge of the opening 17 is inserted into the n-shaped gap 23, the contact area between the edge of the opening 17 and the ring rib 203 and the outer ring 204 is increased, and the difficulty that the edge of the opening 17 is separated from the outer ring 204 and the ring rib 203 is increased, so that the edge of the opening 17 is stably clamped between the ring rib 203 and the outer ring 204. Meanwhile, the ring rib 203 is inserted into the opening 17 of the inner container 2 to support the edge of the opening 17, so as to ensure that the shape and the size of the opening 17 are not changed.

Referring to fig. 11 and 12, in the third structure of the mounting bracket 20, the mounting bracket 20 includes a ring rib 203 fixed on the cavity wall of the accommodating cavity 19, an outer ring 204 clamped on the cavity wall of the accommodating cavity 19, and an inner ring 205, the outer ring 204 is sleeved on the outer wall of the edge of the opening 17 and clamps the edge of the opening 17 through the inner ring 205, and the edge of the opening 17 is clamped and sealed between the outer ring 204 and the ring rib 203. Meanwhile, an inner ring 205 is installed on the inner wall of the edge of the opening 17 to support the opening 17; the outer ring 204 and the inner ring 205 together grip the edge of the opening 17 so that the size and shape of the opening 17 are maintained.

Preferably, when the mounting bracket 20 is mounted on the wall of the inner ring 205, the bottom surface of the ring rib 203 presses on the top surface of the inner ring 205 to limit the inner ring 205 from being separated from the opening 17, which is beneficial to ensure the relative position relationship between the inner ring 205 and the outer ring 204, and thus the size and shape of the opening 17 are not changed.

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.

Claims

1. A liquid heater is characterized in that: the multifunctional thermos bottle comprises an upper shell, a foldable inner container and a bottom shell, wherein the upper shell is provided with a bottle opening, a bottle cover is arranged at the bottle opening, the upper end of the inner container is connected with the upper shell, a heating assembly is arranged on the inner container, the lower end of the inner container is connected with the bottom shell, when the inner container is folded, one of the upper shell and the bottom shell is sleeved with the other of the upper shell and the bottom shell, and the inner container is hidden between the upper shell and the bottom shell.

2. A liquid heater as claimed in claim 1, wherein: the upper shell is provided with a containing cavity, when the inner container is folded, the upper shell is sleeved outside the bottom shell, and the inner container is hidden between the wall of the containing cavity and the bottom shell.

3. A liquid heater as claimed in claim 2, wherein: the top of the bottom shell is provided with an avoiding cavity for accommodating the heating assembly, and when the inner container is folded, the avoiding cavity enters the accommodating cavity.

4. A liquid heater as claimed in claim 2, wherein: the lower end of the upper shell is provided with an installation opening, when the liner is folded, the bottom shell enters the accommodating cavity through the installation opening, and the bottom of the bottom shell is provided with a lower cover covering the installation opening.

5. A liquid heater as claimed in claim 2, wherein: the lateral wall of the bottom shell is provided with an electric connection part, and when the inner container is folded, the electric connection part is stored in the containing cavity.

6. A liquid heater as claimed in claim 1 or 2, wherein: the inner container comprises an upper ring fixed on the upper shell, a lower ring fixed on the bottom shell, and a bending part connecting the upper ring and the lower ring.

7. A liquid heater as claimed in claim 6, wherein: the inner diameter of the upper ring is a, the inner diameter of the lower ring is b, and the wall thickness of the lower ring is d2 and d2< (a-b)/2.

8. A liquid heater as claimed in claim 7, wherein: the wall thickness of the bent part is d0, and d0 is smaller than 1.5 mm.

9. A liquid heater as claimed in claim 1 or 2, wherein: the upper end of the inner container is provided with an opening, and the edge of the opening is fixed on the wall of the accommodating cavity in a sealing manner.

10. A liquid heater as claimed in claim 1 or 2, wherein: the lower end of the inner container is provided with a connecting port, the bottom shell is fixed with the heating component through a fastener, and the edge of the connecting port is clamped between the heating component and the bottom shell.