CN212972706U - Liquid heating container - Google Patents

Abstract

The present application relates to a liquid heating vessel. The liquid heating vessel comprises at least: a first kettle body; the first kettle body is sleeved on the inner side or the outer side of the second kettle body, and the first kettle body and the second kettle body can move relatively along the axial direction of the liquid heating container so as to enable the liquid heating container to be in a contraction state or a stretching state; the first limiting piece is sleeved on the inner wall or the outer wall of the second kettle body and is connected with the first kettle body; wherein, the first locating part is provided with a locating part. Through the arrangement of the limiting part, the risk of shaking between the first kettle body and the second kettle body can be reduced, so that the stability and the reliability of the first kettle body and the second kettle body in the axial relative motion process are improved.

Description

Liquid heating container

Technical Field

The application relates to the technical field of electric appliances, in particular to a liquid heating container.

Background

An electric kettle product is a common water-containing heating container and becomes a small household appliance with high use frequency in household life. But current kettle body belongs to the integral type cavity mostly, and the volume is fixed, can't adjust the volume of boiling water according to user's demand, and simultaneously, the space that the kettle of this kind of structure occupied is fixed, even the kettle is in the space that non-operating state also can't reduce its and occupy, is unfavorable for storing and transporting.

SUMMERY OF THE UTILITY MODEL

The application provides a liquid heating container, at the in-process of first kettle body and second kettle body along axial relative motion, can reduce rocking of the second kettle body, improve reliability and stability of the two relative motion.

The present application provides a liquid heating vessel, this liquid heating vessel includes at least:

a first kettle body;

the first kettle body is sleeved on the inner side or the outer side of the second kettle body, and the first kettle body and the second kettle body can move relatively along the axial direction of the liquid heating container so as to enable the liquid heating container to be in a contraction state or a stretching state;

the first limiting piece is sleeved on the inner wall or the outer wall of the second kettle body and is connected with the first kettle body;

wherein, the first locating part is provided with a locating part. Through the arrangement of the limiting part, the risk of shaking between the first kettle body and the second kettle body can be reduced, so that the stability and the reliability of the first kettle body and the second kettle body in the axial relative motion process are improved.

In one possible design, the number of the limiting parts is one or more, and the limiting parts are arranged along the circumferential direction of the first limiting part. When the liquid heating container rocks, the limiting parts arranged along the circumferential direction of the first limiting part can apply acting force at different positions to abut against the second kettle body, so that the first kettle body and the second kettle body are further prevented from rocking relatively.

In a possible design, the limiting part and the first kettle body are of an integral structure, so that the limiting part can be prevented from falling off from the first kettle body, and a process of connecting the limiting part and the first kettle body can be omitted when the liquid heating container is assembled, so that the assembling process of the liquid heating container is simplified.

In one possible design, the end surface of the limiting portion is at least partially a curved surface or an inclined surface, and/or the end surface of the limiting portion is at least partially a flexible material. So, because cambered surface and inclined plane possess the guide effect, and frictional force is little, and is more smooth at flexible in-process, easily user's use. Meanwhile, when the first kettle body and the second kettle body move relatively, the limiting part slides along the outer wall or the inner wall of the second kettle body, and at the moment, the flexible material can reduce the risk that the limiting part scratches the second kettle body, so that the service life of the liquid heating container is prolonged.

In one possible design, the limiting part is made of high-temperature-resistant flexible material. Specifically, at least part of the limiting part may be one or more of materials such as silica gel, fluororubber, asbestos, flexible graphite, and the like. The liquid heating container is made of flexible materials, can resist high temperature of more than 100 ℃, and has the advantages that the temperature of the inner cavity of the second kettle body is high, the limiting part in contact with the outer wall of the second kettle body cannot be melted in the working process of the liquid heating container, and the service life and the safety of the limiting part and the liquid heating container are improved. Meanwhile, the flexible material is softer, and when the first kettle body and the second kettle body move relatively, the risk of scratching the outer wall of the second kettle body can be reduced.

In a possible design, the second limiting part is arranged on the outer wall or the inner wall of the second kettle body, and when the first kettle body and the second kettle body move relatively in the axial direction, the second limiting part can abut against the first limiting part, so that the risk that a user is scalded due to overflow of high-temperature liquid caused by separation of the first kettle body and the second kettle body is prevented, and the safety of the liquid heating container is improved.

In a possible design, the second limiting member is an annular structure, and the second limiting member is sleeved on an outer wall or an inner wall of the second kettle body and is fixedly connected with the second kettle body. When the second locating part is of an annular structure, the connecting area between the second locating part and the inner wall or the outer wall of the second kettle body is large, the connecting reliability is high, meanwhile, in the process of relative movement of the first kettle body and the second kettle body along the axial direction, the area of the second locating part abutted against the first locating part is large, and therefore the risk that a user is scalded due to overflow of high-temperature liquid caused by separation of the first kettle body and the second kettle body is further prevented, and the safety of the liquid heating container is improved.

In a possible design, the projections of the second limiting part and the limiting part along the axial direction are at least partially overlapped, so that the limiting part can be abutted against the second limiting part along the axial direction, and the first kettle body is prevented from being separated from the second kettle body.

In a possible design, the liquid heating container further includes a sealing portion, the sealing portion is mounted on the first kettle body or the second kettle body, and the first kettle body and the second kettle body are in sealing fit through the sealing portion. When the liquid heating container is in an expanded or contracted state, the first kettle body and the second kettle body are always kept in a sealing state through the sealing part, so that liquid (such as water) to be heated cannot flow out from a space between the first kettle body and the second kettle body.

In one possible design, the sealing portion is mounted to the first retaining member or the second retaining member. When the sealing part is arranged on the first limiting part or the second limiting part, the sealing groove or the limiting structure for installing the sealing part can be prevented from being arranged on the first kettle body or the second kettle body, so that the structures of the first kettle body and the second kettle body are simplified, and the strength of the first kettle body and the second kettle body is ensured.

In a possible design, the sealing portion of the second limiting member is in interference fit with the inner wall of the first kettle body, so that the sealing reliability between the first kettle body and the second kettle body is improved, and meanwhile, the first kettle body and the second kettle body can be radially connected through the second limiting member, so that the risk of shaking and water leakage of the second kettle body in the relative movement process of the first kettle body and the second kettle body is further reduced.

In a possible design, the bottom of the first pot body is provided with a flange extending outwards along the radial direction; the flanging is connected with the first limiting piece through the first connecting piece. So, the turn-ups can play the additional strengthening, guarantees kettle end intensity, and non-deformable is more stable with the installation of first locating part.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

FIG. 1 is an exploded perspective view of a liquid heating vessel as provided herein;

FIG. 2 is a schematic illustration of a liquid heating vessel installation process as provided herein;

FIG. 3 is a schematic view of a liquid heating vessel according to the present application;

FIG. 4 is a partial enlarged view of the portion I in FIG. 3

Reference numerals:

1-a first pot body;

11-a sliding surface;

12-flanging;

13-a third connecting portion;

2-a second pot body;

3-a first limit piece;

31-a limiting part;

32-a first connection;

33-a first connector;

4-a second stop;

41-a sealing part;

42-a second connection;

43-a second connector;

5-base.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

It is understood by those skilled in the art that the liquid heater provided in the embodiments of the present application may be a folding or telescopic liquid heater, which is suitable for heating various liquids known or commonly used in the art, including but not limited to water, and is not limited to any liquid as long as it can meet the use requirement. For simplicity, the liquid heater will be described in detail mainly by taking as an example that the liquid heater is used for heating water, and thus, the liquid heater may be a foldable electric kettle. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

The embodiment of the application provides a liquid heating container, as shown in fig. 1 and fig. 2, the liquid heating container comprises a first kettle body 1, a second kettle body 2 and a base 5, the first kettle body 1 and the second kettle body 2 both have inner cavities, the first kettle body 1 is sleeved on the inner side or the outer side of the second kettle body 2, that is, at least part of the second kettle body 2 is located in the inner cavity of the first kettle body 1, or at least part of the first kettle body 1 is located in the inner cavity of the second kettle body 2. The base 5 is located at the bottom of the first pot 1 or the second pot 2, and a heating component is arranged in the base 5 and used for heating the liquid contained in the liquid heating container.

The first kettle body 1 and the second kettle body 2 can move relatively along the axial direction of the liquid heating container, when the second kettle body 2 leaves the inner cavity of the first kettle body 1 or the first kettle body 1 leaves the inner cavity of the second kettle body 2 in the relative movement process, the appearance volume of the liquid heating container is increased and is in a stretching state, at the moment, the volume of the liquid heating container for containing liquid is increased, namely the inner cavity of the second kettle body 2 and a part of the inner cavity of the first kettle body 1 can both contain liquid, or the inner cavity of the first kettle body 1 and a part of the inner cavity of the second kettle body 2 can both contain liquid, so that the use requirements of users can be met; on the contrary, when the in-process second kettle body 2 of relative motion stretched into the inner chamber of first kettle body 1, perhaps when first kettle body 1 stretched into the inner chamber of second cavity 2, this liquid heating container's appearance volume diminishes, was in the shrink state, and this liquid heating container's the volume that is used for holding liquid diminishes, and the inner chamber of second kettle body 2 or the inner chamber of first kettle body 1 are used for holding liquid promptly, and at this moment, this liquid heating container can be convenient for accomodate and transport.

Therefore, the volume of the foldable liquid heating container can be changed in the using process, different using requirements of users can be met, portability is improved, and the foldable liquid heating container is convenient to store and transport in a contraction state.

However, since the first body 1 and the second body 2 can move relatively, in the process of transporting and using the liquid heating container, the second body 2 may shake in the inner cavity of the first body 1 to cause the liquid heating container to generate abnormal sound in the using process.

In order to solve the technical problem, the liquid heating container of the present application has a first position-limiting member 3, the first position-limiting member 3 is sleeved on the outer wall or outer wall of the second pot body 2 and is fixedly connected with the first pot body 1, wherein when the first pot body 1 is sleeved on the outer side of the second pot body 2, the first position-limiting member 3 is sleeved on the outer wall of the second pot body 2, and when the second pot body 2 is sleeved on the outer side of the first pot body 1, the first position-limiting member 3 is sleeved on the inner wall of the second pot body 2. When the first pot 1 and the second pot 2 move relatively, the first limiting part 3 can move along with the first pot 1. The first limiting member 3 is provided with a limiting portion 31.

In the embodiment, the limiting part 31 (fixed relative to the first pot body 1) is arranged on the first limiting part 3, when the first pot body 1 and the second pot body 2 of the liquid heating container move relatively along the axial direction, the limiting part 31 can be in contact with or not in contact with the outer wall of the second pot body 2, when the limiting part 31 is in contact with the outer wall or the inner wall of the second pot body 2, the first pot body 1 and the second pot body 2 can be connected in the radial direction through the limiting part 31, the risk of shaking between the first pot body 1 and the second pot body 2 is reduced, and the stability and reliability of the first pot body 1 and the second pot body 2 in the relative movement process along the axial direction are improved; when the limiting part 31 is not in contact with the outer wall or the inner wall of the second pot 2, the limiting part 31 guides the relative movement between the first pot 1 and the second pot 2 along the axial direction, thereby improving the stability and reliability of the relative movement.

Therefore, in the embodiment, by the arrangement of the limiting part 31, the risk of shaking between the first pot 1 and the second pot 2 can be reduced, so that the stability and reliability of the relative movement of the first pot 1 and the second pot 2 along the axial direction can be improved.

In a specific embodiment, as shown in fig. 1, the first limiting member 3 can be a ring structure fixed to the first can 1 and sleeved outside or inside the second can 2, and in this case, the limiting portion 31 can be arranged at an inner ring of the ring structure. Or, the first limiting parts 3 may be a plurality of first limiting parts 3 arranged at intervals, each first limiting part 3 is fixed with the first kettle body 1, the plurality of first limiting parts 3 are arranged at the outer side or the inner side of the second kettle body 2, and at least one first limiting part 3 is provided with a limiting portion 31, so that the first limiting parts 3 are prevented from being replaced integrally due to local damage.

In a specific embodiment, taking the first limiting member 3 as an annular structure as an example, the first limiting member 3 may be provided with a plurality of limiting portions 31, and each limiting portion 31 is arranged along the circumferential direction of the first limiting member 3, when the liquid heating container shakes, the acting forces applied by the plurality of limiting portions 31 at different positions can more effectively abut against the second pot body 2, so that the second pot body 2 can be kept stable with the first pot body 1 at different positions along the radial direction, the force required for keeping the first pot body 1 and the second pot body 2 relatively stable is smaller, and the pot body deformation caused by a single acting force is avoided.

The limiting portion 31 and the first limiting member 3 may be fixedly connected or integrally formed. When the limiting portion 31 is fixedly connected to the first limiting member 3, the first limiting member 3 may be provided with a plurality of connecting holes, and the limiting portion 31 may be installed in the corresponding connecting hole, so as to fixedly connect the limiting portion 31 and the first limiting member 3. For example, the connection hole may radially penetrate through the first limiting member 3, and when the first limiting member 3 is sleeved outside the second kettle body 2, the limiting portion 31 can be radially installed in the connection hole and abut against the outer wall of the second kettle body 2. At this time, when the stopper portion 31 is damaged, it is possible to facilitate replacement or repair of the failed stopper portion 31.

Specifically, the plurality of limiting parts 31 are spaced at the same interval and are arranged uniformly, and at the moment, the plurality of limiting parts 31 are arranged symmetrically relative to the second pot body 2, so that the limiting parts 31 can apply uniform acting force to the second pot body 2, the second pot body 2 is more stable, and the risk of shaking of the second pot body 2 in the relative movement process of the first pot body 1 and the second pot body 2 is further reduced.

In an embodiment, the first limiting member 3 may be provided with 6 limiting portions 31, and the 6 limiting portions 31 are uniformly distributed.

In a possible design, the limiting part 31 may be a structure integrally formed with the first can 1, that is, the first can 1 includes a radially extending flange, and the flange is the limiting part 31. When the stopper 31 is integrally formed with the first housing 1, the stopper 31 can be prevented from falling off from the first body 1, and a process of connecting the stopper 31 to the first body 1 can be omitted when assembling the liquid heating container, thereby simplifying an assembling process of the liquid heating container.

Specifically, the contact part of the limiting part 31 and the outer wall or the inner wall of the second pot body 2 is an arc surface or an inclined surface, and the arc surface and the inclined surface have a guiding effect, so that when the limiting part 31 contacts the inner wall or the outer wall of the second pot body 2, the friction force between the limiting part 31 and the inner wall or the outer wall of the second pot body 2 can be reduced, the relative movement process of the first pot body 1 and the second pot body 2 is smoother, and the use experience of a user is improved. Meanwhile, the contacting part of the limiting part 31 and the second pot body 2 is made of flexible materials, when the first pot body 1 and the second pot body 2 move relatively, the limiting part 31 slides along the outer wall of the second pot body 2, and at the moment, the cambered surface made of the flexible materials can reduce the risk that the limiting part 31 scratches the outer wall of the second pot body 2, so that the service life of the liquid heating container is prolonged.

Further, when the liquid heating container works, the temperature of the inner cavity of the second kettle body 2 is high, and at this time, in order to prevent the limiting part 31 from melting when contacting with the outer wall of the second kettle body 2, the limiting part 31 can also be made of high-temperature resistant flexible material. Specifically, at least a part of the limiting part 31 (a part contacting with the outer wall of the second kettle body 2) may be one or more of materials such as silica gel, fluororubber, asbestos, flexible graphite, and the like. Wherein, the materials are all flexible materials and can resist the high temperature of more than 100 ℃. For example, in the embodiment of the present application, the material of the position-limiting part 31 may be silica gel, at this time, the position-limiting part 31 can resist a high temperature of more than 100 ℃, and in the working process of the liquid heating container, the position-limiting part 31 contacting with the outer wall of the second pot body 2 will not melt, so that the service life and the safety of the position-limiting part 31 and the liquid heating container are improved. Meanwhile, the limiting part 31 made of silica gel is soft, so that the risk of scratching the outer wall of the second kettle body 2 can be reduced when the first kettle body 1 and the second kettle body 2 move relatively.

In the above embodiments, when the limiting portion 31 is made of a flexible material (e.g., silicone), the first limiting member 3 may also be made of a flexible material (e.g., silicone), and at this time, the limiting portion 31 and the first limiting member 3 may be integrally injection molded, so as to reduce the processing difficulty of the first limiting member 3 and the limiting portion 31, and improve the connection reliability of the limiting portion 31 and the first limiting member 3.

On the other hand, in the process that the first kettle body 1 and the second kettle body 2 move relatively along the axial direction, the risk that the first kettle body and the second kettle body fall off along the axial direction exists, and when the first kettle body and the second kettle body fall off, high-temperature liquid in the liquid heating container overflows, so that the risk that a user is scalded exists.

In order to solve the technical problem, a second limiting part 4 may be further disposed on an outer wall or an inner wall of the second kettle body 2, and when the first kettle body 1 is sleeved outside the second kettle body 2, the second limiting part 4 is disposed on the outer wall of the second kettle body 2, and when the second kettle body 2 is sleeved outside the first kettle body 1, the second limiting part 4 is disposed on the inner wall of the second kettle body 2. When the first can 1 and the second can 2 move relatively in the axial direction, the second limiting member 4 can abut against the first limiting member 3, thereby preventing the first can 1 from separating from the second can 2.

In this embodiment, by providing the second limiting part 4, and the second limiting part 4 and the first limiting part 3 are matched with each other, the first kettle body 1 and the second kettle body 2 can be limited from being separated from each other along the axial direction, so that the risk that a user is scalded by overflowing high-temperature liquid caused by the separation of the first kettle body 1 and the second kettle body 2 is prevented, and the safety of the liquid heating container is improved.

In an embodiment, the second position-limiting member 4 is an annular structure, and the second position-limiting member 4 is sleeved on an outer wall or an inner wall of the second pot 2 and is fixedly connected to the second pot 2.

Specifically, the second limiting part 4 is provided with a plurality of second connecting parts 42, and the second kettle body 2 and the second limiting part 4 are fixedly connected through a second connecting part 43. More specifically, the second connecting member 43 is a screw, and the second connecting portion 42 is a screw hole or a screw groove.

When the second kettle body 2 moves to the bottom of the first kettle body 1 along the axial direction, the liquid heating container is in a completely stretched state, and at this time, because the second position-limiting member 4 and the position-limiting portion 31 are at least partially overlapped along the axial projection, the position-limiting portion 31 can be axially abutted against the second position-limiting member 4, thereby preventing the first kettle body 1 from being separated from the second kettle body 2.

When the liquid heating container is in a fully stretched state, the second limiting part is in contact with the limiting part of the first limiting part, and the plurality of limiting parts 31 are arranged to equally divide the gravity of the second kettle body 2 along the axial direction, so that the limiting parts 31 are prevented from being broken due to overlarge single pressure.

In the above embodiments, the liquid heating container may further include a sealing part 41, and the sealing part 41 is installed on the first can 1 or the second can 2, so that the first can 1 and the second can 2 are in sealing fit through the sealing part 41. When the liquid heating container is in a stretching or shrinking state, the first kettle body 1 and the second kettle body 2 are always kept in a sealing state through the sealing part 41, so that the liquid (such as water) to be heated cannot flow out from the space between the first kettle body 1 and the second kettle body 2.

Specifically, the first can 1 or the second can 2 can be provided with a limiting structure or a sealing groove, and the sealing part 41 is installed in the limiting structure or the sealing groove, so that the installation of the sealing part 41 is realized.

Alternatively, the sealing portion 41 can be installed on the first limiting member 3 or the second limiting member 4, for example, the sealing portion 41 can be sleeved on the first limiting member 3 or the second limiting member 4 to seal the first kettle 1 and the second kettle 2.

In the embodiment shown in fig. 2, the sealing part 41 is arranged on the outer ring of the second limiting part 4 along the radial direction, and the sealing part 41 is used for contacting and sealing with the sliding surface 11 of the first can 1 (the inner wall of the first can 1), wherein the sealing part 41 of the second limiting part 4 is in interference fit with the sliding surface 11 of the first can 1, so that the sealing reliability between the first can 1 and the second can 2 is improved, and meanwhile, the first can 1 and the second can 2 can be connected through the second limiting part 4 along the radial direction, so that the risk of the second can 2 shaking during the relative movement of the first can 1 and the second can 2 is further reduced.

In this embodiment, a flange 12 extending outward in the radial direction is disposed at the bottom of the first kettle body 1, and the flange 12 is connected to the first limiting member 3 through a first connecting member 33. This turn-ups 12 can improve and play the additional strengthening to first kettle body 1 to guarantee the intensity at the bottom of the kettle of first kettle body 1, make first kettle body 1 non-deformable, and with the first locating part 3 between the installation reliability higher.

Specifically, the first limiting member 3 is provided with a plurality of first connecting portions 32, the flange 12 is provided with a plurality of third connecting portions 13, and the first connecting member 33 passes through the third connecting portions 13 and is fixedly connected to the first connecting portions 32.

The first connecting members 33 are screws, the number of the first connecting members is 6, the first connecting portions 32 are screw holes or screw grooves, and the third connecting portions 13 are screw through holes.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A liquid heating vessel, comprising:

a first pot body (1);

the first kettle body (1) is sleeved on the inner side or the outer side of the second kettle body (2), and the first kettle body (1) and the second kettle body (2) can move relatively along the axial direction of the liquid heating container so as to enable the liquid heating container to be in a contraction state or a stretching state;

the first limiting piece (3) is sleeved on the inner wall or the outer wall of the second kettle body (2) and connected with the first kettle body (1);

wherein, the first limiting part (3) is provided with a limiting part (31).

2. A liquid heating vessel according to claim 1, wherein said limiting portion (31) is one or more, and said limiting portion (31) is arranged along the circumferential direction of said first limiting member (3).

3. A liquid heating vessel as claimed in claim 1, wherein said limiting part (31) is integral with said first body (1).

4. A liquid heating vessel according to claim 1, wherein the end surface of said limiting portion (31) is at least partly curved or bevelled and/or wherein the end surface of said limiting portion (31) is at least partly of a flexible material.

5. A liquid heating container as claimed in any one of claims 1 to 4, wherein a second limiting part (4) is arranged on the inner wall or the outer wall of the second kettle body (2), and the second limiting part (4) can abut against the first limiting part (3) in the process of relative axial movement of the first kettle body (1) and the second kettle body (2).

6. A liquid heating vessel as claimed in claim 5, wherein said second retaining member (4) is of an annular structure, and said second retaining member (4) is sleeved on the inner wall or the outer wall of said second kettle body (2) and is fixedly connected with said second kettle body (2).

7. A liquid heating vessel according to claim 6, wherein the projection of said second retaining member (4) at least partially coincides with the projection of said retaining portion (31) in the axial direction.

8. A liquid heating container as claimed in any one of claims 1-4, characterized in that the liquid heating container further comprises a sealing part (41), the sealing part (41) is mounted on the first pot (1) or the second pot (2), and the first pot (1) and the second pot (2) are in sealing fit through the sealing part (41).

9. A liquid heating vessel as claimed in claim 8, characterized in that the inner or outer wall of the second kettle body (2) is provided with a second stop member (4);

the seal portion (41) is attached to the first stopper (3) or the second stopper (4).

10. A liquid heating vessel as claimed in any one of claims 1 to 4, wherein the bottom of the first kettle body (1) is provided with a flange (12) extending radially outwards;

the flanging (12) is connected with the first limiting piece (3) through a first connecting piece (33).

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