CN212438266U - Liquid heating container - Google Patents

Abstract

The utility model relates to an electrical apparatus technical field is used in the kitchen, provides a liquid heating container, and this liquid heating container includes the kettle body, sealing member and pressure regulating part, and the kettle body has electric component, and the sealing member is used for sealing electric component, and the pressure regulating part sets up in the kettle body and communicates through air guide pipeline and sealing member, can initiatively or passively adjust the inside atmospheric pressure of sealing member. When the liquid heating container is cleaned and used, the sealing element is sealed and sleeved outside the electric component, so that water can be effectively prevented from being immersed into the electric component, and the problem of poor contact of the electric component is avoided; and because the heating coil among the electric component can make inside temperature rising, the atmospheric pressure increase of sealing member at the calorification in-process of circular telegram, so communicate sealing member and pressure regulating part through the air guide pipeline, carry out initiative or passive regulation to the atmospheric pressure of sealing member inside through the pressure regulating part, prevent that the phenomenon that the sealing member appears inside atmospheric pressure change great, inflation damage before and after boiling water.

Description

Liquid heating container

Technical Field

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

Background

A common liquid heating container in daily life is taken as a hot water kettle, and the hot water kettle is popular among consumers due to the advantages of convenience and quickness in water boiling.

The electric component of hot water kettle is provided with sealed protection device specially in prior art, and the consumer prevents the water logging through sealed protection device and soaks into the electric component when wasing the hot water kettle, avoids electric component to appear contact failure or short circuit damage's hidden danger.

However, in practical use, because the electric component can generate certain heating effect when being electrified, the internal air pressure of the sealing protection device is easy to be heated and increased, and especially when the hot water kettle is used in winter, the temperature difference between the inside and the outside of the sealing protection device is large before and after the water is boiled due to the low outside air temperature, so that the internal air pressure of the sealing protection device is large before and after the water is boiled, and the problems of poor sealing stability or sealing failure are easy to occur.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides a liquid heating container for solve the problem that the sealing protection device of hot water kettle electric component in the prior art has the inside atmospheric pressure change of the sealing protection device is great before and after boiling water, and the sealing stability becomes poor or the sealing fails to work easily.

The liquid heating container provided by the application comprises a kettle body, a sealing piece and a pressure regulating piece;

the kettle body is provided with an electric component;

the sealing member is used for sealing the electrical member;

the pressure regulating part is arranged in the kettle body and communicated with the sealing part through an air guide pipeline, and the internal air pressure of the sealing part can be actively or passively regulated.

In one possible design, the pressure regulating member is a pressure regulating cylinder;

the pressure regulating cylinder comprises a cylinder body and a piston;

the cylinder body is provided with an inner cavity, and the inner cavity is communicated with the sealing piece through the air guide pipeline;

the piston is arranged in the inner cavity, is in sealing butt joint with the inner wall of the cylinder body, and can move towards or away from the air guide pipeline.

In one possible design, an opening for communicating with the outside is formed in one side of the cylinder body, which is far away from the air guide pipeline;

the piston can move towards or away from the air guide pipeline under the action of the pressure difference between the sealing piece and the external air pressure.

In a possible design, the cylinder body is further provided with a limit stop edge at a peripheral wall surrounding the opening;

the limit stop edge is used for preventing the piston from sliding out of the opening.

In one possible design, the pressure-regulating cylinder further includes a drive rod;

the driving rod is in transmission connection with the piston and can drive the piston to move towards or away from the air guide pipeline.

In one possible design, the liquid heating vessel further comprises an electrical control board electrically connected to the drive rod;

when the liquid heating container is electrified and heated, the electric control plate can regulate and control the working state of the driving rod, so that the driving rod drives the piston to deviate from the air guide pipeline to move.

In one possible design, an air guide cylinder is further arranged on one side of the cylinder body, which is connected with the air guide pipeline;

the gas cylinder is communicated with the inner cavity;

one end of the air guide pipeline is provided with a sleeving part for sleeving the air guide cylinder;

the air guide pipeline is connected with the pressure regulating cylinder in a mode that the sleeving part is in sealed sleeving connection with the air guide cylinder.

In one possible design, the airway tube includes first and second tube segments that are connected to one another;

one end of the first pipe section is provided with the sleeving part which is sleeved on the gas cylinder;

one end of the second pipe section is hermetically inserted in the sealing element.

In one possible design, the kettle body comprises a kettle body and a bottom shell;

the kettle body is fixedly arranged on the bottom shell and forms an installation space together with the bottom shell;

the electrical part is arranged on the bottom wall of the kettle body facing the mounting space;

the sealing element is sleeved on the electric element and is in sealing and abutting joint with the periphery of the bottom wall of the kettle body.

In one possible design, the bottom shell is provided with a perspective window;

when the bottom shell is arranged on the kettle body, the perspective window is arranged corresponding to the pressure regulating piece.

By combining the technical scheme, the beneficial effects of the method are analyzed as follows:

the application provides a liquid heating container includes the kettle body, sealing member and pressure regulating part, and the kettle body has electric component, and the sealing member is used for sealed electric component, and the pressure regulating part sets up in the kettle body and communicates through air guide pipeline and sealing member, can initiatively or passively adjust the inside atmospheric pressure of sealing member.

When the liquid heating container is cleaned and used, as the sealing element is sealed in the electric element, water can be effectively prevented from being immersed into the electric element, and the problem of poor contact of the electric element is avoided; and because the electric component can make the inside temperature rise of sealing member, atmospheric pressure increase at the calorification in-process of circular telegram, so communicate sealing member and pressure regulating part through the air guide pipeline, carry out initiative or passive regulation to the atmospheric pressure of sealing member inside through the pressure regulating part, prevent that the sealing member from the phenomenon that the sealed failure of expansion, damage appear when the electric component generates heat. Therefore, the problems that the air pressure inside the sealing protection device of the electric component of the hot water kettle is changed greatly before and after the hot water is boiled, and the sealing stability is easy to be poor or the sealing is ineffective in the prior art are solved.

Additional features and advantages of embodiments of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of embodiments of the present application. The objectives and other advantages of the embodiments of the application will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

FIG. 1 is a cross-sectional view of a liquid heating vessel provided by an embodiment of the present application;

FIG. 2 is a schematic view of the installation of a sealing member and a pressure regulating member in a liquid heating vessel according to an embodiment of the present application;

FIG. 3 is a cross-sectional view of a first configuration of a pressure regulator in a liquid heating vessel according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a second configuration of a pressure regulator in a liquid heating vessel according to an embodiment of the present application;

fig. 5 is a side view of a liquid heating vessel according to an embodiment of the present application.

Reference numerals:

1-a pot body;

11-a kettle body;

12-a bottom shell;

121-perspective window;

2-a seal;

3-pressure regulating parts;

31-cylinder body;

311-limit stop edge;

312-a gas cylinder;

32-a piston;

33-a drive rod;

4-a gas guide pipeline;

41-a first tube section;

411-the encasement portion;

42-second pipe section.

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.

Next, a specific example of the structure of the liquid heating container according to the embodiment of the present application will be described.

FIG. 1 is a cross-sectional view of a liquid heating vessel provided by an embodiment of the present application;

FIG. 2 is a schematic view of the installation of a sealing member and a pressure regulating member in a liquid heating vessel according to an embodiment of the present application;

FIG. 3 is a cross-sectional view of a first configuration of a pressure regulator in a liquid heating vessel according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a second configuration of a pressure regulator in a liquid heating vessel according to an embodiment of the present application;

fig. 5 is a side view of a liquid heating vessel according to an embodiment of the present application.

As shown in fig. 1, the present embodiment provides a liquid heating container, which comprises a kettle body 1, a sealing member 2 and a pressure regulating member 3; the kettle body 1 is provided with an electric component; the sealing member 2 is used for sealing the electric member; the pressure regulating part 3 is arranged on the kettle body 1, is communicated with the sealing part 2 through an air guide pipeline 4, and can actively or passively regulate the internal air pressure of the sealing part 2.

When the liquid heating container is cleaned and used, the sealing element 2 is sealed in the electric element, so that water can be effectively prevented from being immersed in the electric element, and the problem of poor contact of the electric element is avoided; moreover, the temperature inside the sealing element 2 can be increased and the air pressure can be increased in the process of electrifying and heat production of the electric element, so that the sealing element is communicated with the pressure regulating element 3 through the air guide pipeline 4, the air pressure inside the sealing element 2 is actively or passively regulated through the pressure regulating element 3, and the phenomena of expansion failure and damage of the sealing element 2 in the heat production of the electric element are prevented. Therefore, the problems that the air pressure inside the sealing protection device of the electric component of the hot water kettle is changed greatly before and after the hot water is boiled, and the sealing stability is easy to be poor or the sealing is ineffective in the prior art are solved.

The liquid heating container can be an electric water boiling appliance such as an electric kettle, a health preserving kettle and the like.

The sealing element 2 can be made of high-temperature-resistant elastic materials, so that the sealing element 2 is prevented from being damaged by a heating disc in the electric element in the electrifying and heat generating processes.

In the alternative of the embodiment, the pressure regulating part 3 is a pressure regulating cylinder; the pressure regulating cylinder comprises a cylinder body 31 and a piston 32; the cylinder 31 has an inner cavity which is communicated with the sealing element 2 through the air guide pipeline 4; the piston 32 is disposed in the inner cavity and is in sealing contact with the inner wall of the cylinder 31, and is movable toward or away from the air guide pipe 4.

Specifically, as shown in fig. 3 or 4, the pressure regulating member 3 is configured as a pressure regulating cylinder having a cylinder 31 and a piston 32, and the inner cavity of the cylinder 31 is communicated with the sealing member 2 through the air guide pipeline 4, and at this time, the function of regulating the air pressure inside the sealing member 2 can be realized by actively or passively regulating the relative position relationship of the piston 32 in the inner cavity.

For example, when the friction coefficient between the piston 32 and the inner wall of the cylinder 31 is small, the internal air pressure of the sealing member 2 can be adjusted by the passive movement of the piston 32. When the liquid heating container is electrified and heated, the electric part raises the temperature inside the sealing element 2 and increases the air pressure, and the pressure generated by the pressure difference between the sealing element 2 and the external environment can push the piston 32 to move away from the air guide pipeline 4, so that the internal pressure of the sealing element 2 can be reduced; when the electric component is cooled or the temperature inside the sealing member 2 is low, the air pressure inside the sealing member 2 is reduced, and the pressure generated by the pressure difference between the sealing member 2 and the external environment can push the piston 32 to move towards the air guide pipeline 4, so that the internal pressure of the sealing member 2 can be stabilized.

When the friction coefficient between the piston 32 and the inner wall of the cylinder 31 is large, the internal air pressure of the sealing member 2 can be adjusted by actively moving the piston 32. When the liquid heating vessel is electrically heated, the piston 32 is actively driven to move away from the air guide pipe 4, so as to prevent the seal 2 from being excessively pressurized when the temperature inside the seal rises; when the temperature of the sealing element 2 is reduced, the piston 32 is driven to move towards the air guide pipe 4, so that the air pressure is prevented from being too low after the temperature of the sealing element 2 is reduced.

Set pressure regulating spare 3 to foretell pressure regulating cylinder, have simple structure, can adjust the inside atmospheric pressure size of sealing member 2 in a flexible way advantage.

Of course, the upper pressure regulating member 3 may be configured as other pressure regulating devices, such as an air pump, etc., and may achieve the function of regulating the air pressure inside the sealing member 2.

In the alternative of this embodiment, an opening for communicating with the outside is opened on one side of the cylinder 31 away from the air guide pipeline 4; the piston 32 is movable towards and away from the pilot line 4 under the effect of the pressure difference between the seal 2 and the external air pressure.

In particular, as shown in fig. 3, it may be preferable at this time to arrange for the internal gas pressure of the seal 2 to be regulated by means of passive movement of the piston 32. The openings are used to balance the air pressure between the cylinder 31 and the external environment, and the piston 32 can be mounted in the cylinder 31 through the openings.

When the temperature and the air pressure inside the sealing element 2 are in normal conditions, the pressure difference between the sealing element 2 and the external environment is zero, and the piston 32 is stably positioned in the middle of the cylinder 31; when the temperature inside the seal 2 increases and the air pressure increases, the pressure difference between the seal 2 and the external environment is a positive pressure difference, and the piston 32 moves away from the air guide pipe 4 (the piston 32 moves toward the dotted line B in fig. 3); when the temperature inside the seal member 2 decreases and the air pressure increases, the pressure difference between the seal member 2 and the external environment becomes a negative pressure difference, and the piston 32 moves toward the air duct 4 (the piston 32 moves toward the broken line a in fig. 3).

The opening is arranged on the cylinder body 31, other driving devices are not needed to be additionally arranged, the position of the piston 32 in the cylinder body 31 can be adjusted through the pressure difference between the sealing element 2 and the external environment, and the sealing device has the advantages of being simple in structure and capable of flexibly and adaptively adjusting the internal air pressure of the sealing element 2.

In an alternative of this embodiment, the cylinder 31 is further provided with a limit stop edge 311 at the peripheral wall surrounding the opening; the limit stop 311 serves to prevent the piston 32 from sliding out of the opening.

Specifically, as shown in fig. 3, the limit stopper 311 may be detachably mounted on the circumferential wall of the cylinder 31 surrounding the opening, for example, an internal thread is provided on the circumferential wall of the cylinder 31 surrounding the opening, an external thread is provided on the circumferential wall of the limit stopper 311, and the limit stopper 311 is mounted on the cylinder 31 by a threaded connection.

The stop edge 311 can stop the piston 32 when the piston 32 moves away from the air guide pipe 4 to the opening, so as to prevent the piston 32 from sliding out of the cylinder 31 through the opening.

Moreover, in order to further improve the waterproof effect of the pressure regulating cylinder, a layer of waterproof and breathable film can be further attached to the opening to prevent water from entering the cylinder body 31 through the opening when the liquid heating container is cleaned.

In an alternative of this embodiment, the pressure-regulating cylinder further includes a drive rod 33; the drive rod 33 is in driving connection with the piston 32 and is capable of moving the piston 32 towards or away from the air guide line 4.

Specifically, as shown in fig. 4, the above-described drive rod 33 is provided, and the position of the piston 32 in the cylinder 31 can be actively adjusted by the drive rod 33.

When the liquid heating container is powered on and heated, the driving rod 33 can drive the piston 32 to move away from the air guide pipeline 4 (the piston 32 moves towards a dotted line B in fig. 4), so as to avoid the problem of increasing air pressure inside the sealing element 2 when the temperature of the electrical element rises; when the liquid heating container is powered off and cooled, the driving rod 33 can drive the piston 32 to move towards the gas guide pipeline 4 (the piston 32 moves towards the dotted line a in fig. 4), so as to avoid the problem of reduction of the gas pressure inside the sealing element 2 when the temperature of the electrical element is reduced.

The piston 32 can be actively driven to move by the driving rod 33, so that the pressure adjusting cylinder can adaptively adjust the internal air pressure of the sealing element 2 in advance.

It should be noted that the driving rod 33 may be specifically configured to implement the function of driving the piston 32 to translate in a manner of "motor + rack-and-pinion mechanism" or "motor + lead screw nut mechanism".

In an alternative of this embodiment, the liquid heating vessel further comprises an electric control board electrically connected to the driving rod 33; when the liquid heating container is electrified and heated, the electric control board can regulate and control the working state of the driving rod 33, so that the driving rod 33 drives the piston 32 to move away from the air guide pipeline 4.

The electric control board is electrically connected with the driving rod 33, and the working state of the driving rod 33 can be accurately and flexibly controlled through the electric control board, so that the moving stroke of the piston 32 can be accurately controlled through the driving rod 33, and the internal air pressure of the sealing element 2 can be accurately adjusted in the moving process of the piston 32 in the cylinder body 31.

In the alternative of this embodiment, an air guide cylinder 312 is further provided at the side where the cylinder 31 is connected with the air guide pipeline 4; the gas cylinder 312 is communicated with the inner cavity; one end of the air guide pipeline 4 is provided with a sleeving part 411 for sleeving the air guide cylinder 312; the air guide pipeline 4 is connected with the pressure regulating cylinder in a mode of hermetically sleeving the air guide cylinder 312 through a sleeving part 411.

Specifically, as shown in fig. 3 or 4, the sleeving part 411 of the air guide pipeline 4 may be configured as an elastic sleeve, and the sleeving part 411 may be fixed to the outer circumferential wall of the air guide cylinder 312 in a sealing manner by an elastic contraction action of the sleeving part 411, or the sleeving part 411 may be further connected to the air guide cylinder 312 in a sealing manner by a sealant.

The air guide pipeline 4 is connected with the pressure regulating cylinder in a mode of hermetically sleeving the air guide cylinder 312 through the sleeving part 411, and the pressure regulating cylinder has the advantages of simple sealing connection mode and convenience in disassembly and assembly.

In an alternative to this embodiment, airway tube 4 comprises first tube section 41 and second tube section 42 connected to each other; one end of the first pipe section 41 is provided with a sleeving part 411 which is sleeved on the gas cylinder 312; one end of the second tube section 42 is sealingly plugged to the sealing element 2.

Specifically, as shown in fig. 3 or 4, the first pipe section 41 and the second pipe section 42 may be preferably disposed perpendicular to each other, the first pipe section 41 may be disposed along a horizontal direction, and the second pipe section 42 may be disposed along a vertical direction, so that the first pipe section 41 and the second pipe section 42 can communicate the sealing element 2 with the pressure regulating cylinder, and can also be oriented in an air flow direction, so that the arrangement manner of the pressure regulating cylinder in the kettle body 1 is more flexible.

In an alternative of the embodiment, the kettle body 1 comprises a kettle body 11 and a bottom shell 12; the kettle body 11 is fixedly arranged on the bottom shell 12 and forms an installation space together with the bottom shell 12; the electric component is arranged on the bottom wall of the kettle body 11 facing the installation space; the sealing member 2 is fitted over the electrical component and is in sealing contact with the peripheral portion of the bottom wall of the kettle body 11.

Specifically, as shown in fig. 1, the bottom shell 12 may be specifically fastened to the bottom of the kettle body 11, and together with the kettle body 11, forms an installation space for installing the sealing element 2 and the pressure regulating element 3, and the electrical element is disposed on the bottom wall of the kettle body 11 facing the installation space, and the sealing element 2 may be specifically set to be a cylindrical structure with an open end, and the opening side is hermetically fastened to the periphery of the bottom wall of the kettle body 11, so that the electrical element can be sealed.

The specific structure of the kettle body 1 and the arrangement mode of the sealing element 2 have the advantages of simple structure and convenient assembly and sealing.

In an alternative of this embodiment, the bottom case 12 is provided with a perspective window 121; when the bottom shell 12 is installed on the kettle body 11, the perspective window 121 is arranged corresponding to the pressure regulating member 3.

Specifically, as shown in fig. 5, the perspective window 121 may be specifically opened on a side wall of the bottom case 12, and a user can directly observe and know the position of the piston 32 in the pressure regulating cylinder through the perspective window 121, so as to know the internal air pressure condition of the sealing member 2.

Further, a recessed mounting portion may be provided on the side of the sealing member 2 facing the bottom case 12, and the pressure adjuster 3 may be mounted on the mounting portion and abut against the bottom case 12.

Specifically, as shown in fig. 1 and 2, a recessed mounting portion is provided on the side of the sealing member 2 facing the bottom case 12, and the pressure adjuster 3 is mounted on the mounting portion and abuts against the bottom case 12. With the structure, on one hand, the pressure regulating part 3 can be installed on the outer side of the sealing part 2 in an embedded mode, the sealing part 2 plays a role in fixing and limiting the pressure regulating part 3, the sealing part 2 and the pressure regulating part 3 can be installed on the kettle body 1 in a more adaptive mode, the pressure regulating part 3 is abutted against the bottom shell 12, the sealing part 2 can be supported through the pressure regulating part 3, and the installation stability of the sealing part 2 is further improved.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (10)

1. A liquid heating vessel, comprising:

the kettle body (1), the kettle body (1) is provided with an electric component;

a seal (2) for sealing the electrical component;

the pressure regulating part (3) is arranged on the kettle body (1), is communicated with the sealing part (2) through an air guide pipeline (4), and can actively or passively regulate the internal air pressure of the sealing part (2).

2. A liquid heating vessel as claimed in claim 1, wherein the pressure regulating member (3) is a pressure regulating cylinder;

the pressure regulating cylinder comprises a cylinder body (31) and a piston (32);

the cylinder (31) is provided with an inner cavity, and the inner cavity is communicated with the sealing element (2) through the air guide pipeline (4);

the piston (32) is arranged in the inner cavity, is in sealing contact with the inner wall of the cylinder body (31), and can move towards or away from the air guide pipeline (4).

3. A liquid heating vessel according to claim 2, wherein an opening for communication with the outside is provided on the side of the cylinder (31) facing away from the air conducting line (4);

the piston (32) can be moved towards or away from the air guide line (4) under the effect of the pressure difference between the seal (2) and the external air pressure.

4. A liquid heating vessel as claimed in claim 3, wherein said cylinder (31) is further provided with a stopper edge (311) at a peripheral wall surrounding said opening;

the limit stop edge (311) is used for preventing the piston (32) from sliding out of the opening.

5. A liquid heating vessel as claimed in claim 2, wherein said pressure regulating cylinder further comprises a drive rod (33);

the driving rod (33) is in transmission connection with the piston (32) and can drive the piston (32) to move towards or away from the air guide pipeline (4).

6. A liquid heating vessel as claimed in claim 5, further comprising an electrical control board electrically connected to the drive rod (33);

when the liquid heating container is electrified and heated, the electric control plate can regulate and control the working state of the driving rod (33), so that the driving rod (33) drives the piston (32) to deviate from the air guide pipeline (4) to move.

7. A liquid heating vessel as claimed in any one of claims 2 to 6 wherein a gas cylinder (312) is provided on the side of the cylinder (31) connected to the gas conduit (4);

the gas cylinder (312) is communicated with the inner cavity;

one end of the air guide pipeline (4) is provided with a sleeving part (411) for sleeving the air guide cylinder (312);

the air guide pipeline (4) is connected with the pressure regulating cylinder in a mode that the sleeving part (411) is used for hermetically sleeving the air guide cylinder (312).

8. A liquid heating vessel as claimed in claim 7, wherein said air conducting line (4) comprises a first tube section (41) and a second tube section (42) connected to each other;

one end of the first pipe section (41) is provided with the sleeving part (411) which is sleeved on the gas cylinder (312);

one end of the second pipe section (42) is hermetically inserted in the sealing element (2).

9. A liquid heating vessel as claimed in claim 1, wherein said kettle body (1) comprises a kettle body (11) and a bottom shell (12);

the kettle body (11) is fixedly arranged on the bottom shell (12) and forms an installation space together with the bottom shell (12);

the electrical part is arranged on the bottom wall of the kettle body (11) facing the installation space;

the sealing element (2) is sleeved on the electric element and is in sealing contact with the periphery of the bottom wall of the kettle body (11).

10. A liquid heating vessel as claimed in claim 9, wherein said bottom shell (12) is provided with a see-through window (121);

when the bottom shell (12) is arranged on the kettle body (11), the perspective window (121) is arranged corresponding to the pressure regulating piece (3).

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