CN217592552U - Electric heating kettle - Google Patents

Abstract

The utility model provides an electric kettle, electric kettle includes: the kettle body comprises an inner shell and an outer shell, wherein the inner shell is provided with a containing cavity for containing liquid to be heated, a heat insulation cavity is formed between the outer surface of the side wall of the inner shell and the inner surface of the side wall of the outer shell, a mounting cavity is formed between the outer surface of the bottom of the inner shell and the inner surface of the bottom of the outer shell and used for mounting a heating device, and the heat insulation cavity is used for preventing heat in the containing cavity from being transferred to the outer surface of the outer shell; the base, the base is used for bearing the kettle body, and the base has the connector, and heating device has the conducting state with the connector contact to and heating device has the outage state with the connector separation. By adopting the technical scheme, the problem that the electric kettle in the prior art is easy to scald users is effectively solved.

Description

Electric heating kettle

Technical Field

The utility model relates to a heating device technical field particularly, relates to an electric kettle.

Background

The electric kettle has the main working principle that the electric heating element is used for quickly heating liquid, and generally has the functions of automatic power off after water is boiled and dry heating power off. Electric kettles are also developing toward multiple functions, such as leakage prevention, water locking and the like. With the development of electric kettles, the heating speed thereof is increased. However, after the existing electric kettle heats the liquid to the preset temperature, the shell of the existing electric kettle has higher temperature, and the safety risk of scalding users exists.

Aiming at the problem that an electric kettle in the prior art is easy to scald a user, an effective solution is not provided at present.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide an electric kettle to solve the problem that the user is easily scalded by the electric kettle in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided an electric kettle comprising: the kettle body comprises an inner shell and an outer shell, wherein the inner shell is provided with a containing cavity for containing liquid to be heated, a heat insulation cavity is formed between the outer surface of the side wall of the inner shell and the inner surface of the side wall of the outer shell, a mounting cavity is formed between the outer surface of the bottom of the inner shell and the inner surface of the bottom of the outer shell and used for mounting a heating device, and the heat insulation cavity is used for preventing heat in the containing cavity from being transferred to the outer surface of the outer shell; the base is used for bearing the kettle body, the base is provided with a connector, the heating device is in a conductive state of being in contact with the connector, and the heating device is in a power-off state of being separated from the connector.

Further, the heat insulation cavity is of a vacuum structure, or heat insulation materials are filled in the heat insulation cavity.

Further, the heating device includes: the heating element is used for heating the liquid to be heated, and is attached to the bottom of the inner shell; the temperature controller is connected with the shell, has a normal state when the temperature is lower than the preset temperature, and has a trigger state when the temperature is not lower than the preset temperature; when the temperature controller is in a trigger state, the electrical connection between the heating element and the connector is cut off.

Further, the heating element is a PTC element, and/or the heating element is a heat-generating tube.

Furthermore, the bottom circumference of shell is provided with the installation step, and the top of base is provided with the installation arch.

Further, the shell is made of a thermochromic material, and/or the shell is made of a low-thermal-conductivity material.

Further, the outer shell and the inner shell are detachably connected, or the outer shell and the inner shell are integrally formed.

Further, a controller is arranged on the base and used for adjusting the working state of the heating device.

Further, the shell is provided with an air inlet and an air outlet, the air inlet is provided with a first opening and closing device, and the air outlet is provided with a second opening and closing device.

Use the technical scheme of the utility model, through setting up thermal-insulated chamber and installation cavity between the inner shell with the kettle body and the shell, thermal-insulated chamber can completely cut off the heat transfer of the heated liquid body effectively for the heat that holds the intracavity is difficult to transmit to the shell, has solved the problem that the user was easily scalded to electric kettle among the prior art effectively.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 shows a schematic structural view of a first embodiment of an electric kettle according to the present invention;

fig. 2 shows a schematic structural view of a second embodiment of an electric kettle according to the present invention;

fig. 3 shows a schematic structural view of a third embodiment of the electric kettle according to the present invention.

Wherein the figures include the following reference numerals:

10. a kettle body; 11. an inner shell; 111. an accommodating chamber; 12. a housing; 13. a thermally insulating cavity; 14. a heating device; 141. a heating element; 142. a temperature controller;

20. a base; 21. a connector;

30. an upper cover; 31. a seal ring; 32. a handle.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 3, according to an embodiment of the present application, an electric kettle is provided.

The electric kettle comprises a kettle body 10 and a base 20. The kettle body 10 comprises an inner shell 11 and an outer shell 12. The inner housing 11 has a receiving cavity 111 for receiving a liquid for heating. An insulating chamber 13 is formed between the outer surface of the sidewall of the inner casing 11 and the inner surface of the sidewall of the outer casing 12. A mounting cavity is formed between the bottom outer surface of the inner shell 11 and the bottom inner surface of the outer shell 12. The mounting cavity is used for mounting the heating device 14. The heat insulating chamber 13 serves to prevent heat inside the receiving chamber 111 from being transferred to the outer surface of the case 12. The base 20 is used for carrying the kettle body 10. The base 20 has a connector 21. The heating device 14 has a conductive state in contact with the connector 21, and the heating device 14 has a de-energized state separated from the connector 21.

By adopting the technical scheme, the heat insulation cavity 13 and the mounting cavity are arranged between the inner shell 11 and the outer shell 12 of the kettle body 10, the heat insulation cavity 13 can effectively isolate the heat transfer of heated liquid, so that the heat in the accommodating cavity 111 is difficult to transfer to the outer shell 12, and the problem that a user is easily scalded by an electric kettle in the prior art is effectively solved.

Further, the heat insulating chamber 13 is a vacuum structure. The heat insulating chamber 13 is filled with a heat insulating material. The thermal insulation capacity of the thermal insulation cavity 13 can be further improved by adopting thermal insulation materials, which are classified into three types, namely porous materials, heat reflection materials and vacuum materials, and include but are not limited to structures of glass fibers, asbestos and aerogel felt. The electric kettle also comprises an upper cover 30, a sealing ring 31 and a handle 32.

As shown in fig. 1, the heating device 14 includes a heating element 141 and a thermostat 142. The heating element 141 is used for heating the liquid to be heated. The heating element 141 is attached to the bottom of the inner casing 11. Thermostat 142 is connected to housing 12. The thermostat 142 has a normal state when it is lower than a preset temperature, and the thermostat 142 has a trigger state when it is not lower than the preset temperature. When the temperature controller 142 is in the activated state, the electrical connection between the heating element 141 and the connector 21 is cut off. In an alternative embodiment, the bottom of the inner casing 11 is provided with a heating groove, and the heating element 141 is located in the heating groove. The temperature controller is a series of automatic control elements, also called temperature control switches and temperature protectors, called temperature controllers for short, which physically deform inside the switch according to the temperature change of the working environment, thereby generating certain special effects and generating on or off actions. The temperature controller 142 in the field of electric heating kettles is a temperature switch using a bimetallic strip as a temperature sensing element, when an electric appliance normally works, the bimetallic strip is in a free state, a contact is in a closed/open state, when the temperature rises to an action temperature value, the bimetallic element is heated to generate internal stress to quickly act, the contact is opened/closed, and a circuit is cut off/connected, so that the thermal protection effect is achieved. When the temperature is reduced to the reset temperature, the contact is automatically closed/opened, and the normal working state is recovered.

Further, the heating element 141 is a PTC element. The heating element 141 is a heat generating tube. The PTC heating element is used for replacing the heating tube, so that the fire danger caused by dry burning can be effectively prevented. The dry-firing temperature of the PTC heating element can be set to any temperature between 150 ℃ and 250 ℃, and when the temperature reaches the set temperature, the resistance of the PTC element rapidly increases, and the heating power rapidly decreases, so that the temperature is maintained at the set temperature without further increasing. The self-controlling temperature capability of the PTC heating element controls temperature by using resistance changes within the PTC body, rather than relying on any contact control. The PTC heating element has great advantages when being used for heat preservation of the electric kettle. The PTC heating element has a dry heating prevention function, the dry heating power of the PTC heating element is about one tenth of the water boiling power, and under the condition that the temperature control element fails, the temperature of the PTC heating element is kept at a lower temperature, so that no danger is generated.

In order to further improve the ease of the mounting operation of the kettle body 10 to the base 20, the bottom of the housing 12 is provided with a circumferential mounting step. The top of the base 20 is provided with a mounting protrusion. The arrangement can enable the kettle body 10 of the electric kettle to be quickly positioned on the base 20, and the structural stability between the kettle body and the base is improved.

In an alternative embodiment, the housing 12 is made of a thermochromic material. The housing 12 is made of a low thermal conductivity material. The temperature sensing color-changing material is adopted to manufacture the shell 12, so that a user can intuitively judge whether the kettle body 10 has scald risk according to the color of the shell 12.

Further, the outer case 12 is detachably connected to the inner case 11. The outer shell 12 is provided integrally with the inner shell 11. This arrangement can facilitate cleaning, maintenance or replacement of the outer and inner shells 12, 11.

Optionally, a controller is provided on the base 20 for adjusting the operating state of the heating device 14.

The housing 12 is provided with an air inlet and an air outlet, the air inlet is provided with a first opening and closing device, and the air outlet is provided with a second opening and closing device. The arrangement is such that the interior of the insulated chamber 13 is selectively accessible to the outside, allowing rapid heat dissipation in certain special cases. The opening and closing means is preferably a shutter, and the control of the insulating chamber 13 can be achieved by a simple mechanical structure. For example, when the user wants to cool down the hot water quickly, the opening and closing device in this embodiment can be opened, while still there is no risk of scalding.

In an optional embodiment, the electric kettle further comprises a control panel arranged on the base 20, and the control panel comprises a liquid crystal display part and a key part. The key part comprises a switch button and an adjusting button, and the adjusting button is used for adjusting the working mode and the temperature of the electric kettle. The electric kettle comprises a plurality of working modes, and the specific corresponding temperature ranges are shown in the following table:

optionally, the electric kettle has a self-checking program, when the power is switched on, the electric kettle starts self-checking, the product does not have any problem and automatically returns to a standby state, and in a startup mode, the kettle displays real-time water temperature and the kettle does not display 'E1'.

The working process of the electric kettle is as follows: after the power-on self-inspection, the panel is in a standby state, the panel is started through a key, the functions of 'temperature adjustment', 'heat adjustment', 'coffee', 'tea making', 'boiling' and 'intermittent boiling' on the panel can be selected by clicking the function selection key, and which function is selected, the indicator lamp of the function is flashed and lightened, and the light is turned on for 0.5S and turned off for 0.5S. And the liquid crystal display screen displays the target temperature corresponding to the current function and the real-time water temperature of the kettle body. The electric kettle has no key operation within 6 seconds, buzzes 1 sound, the indicator light of the menu function is long and bright, the display screen part area displays the change along with the water temperature of the kettle body, and the machine starts to work. The electric kettle has a temperature adjusting function, a heating function is selected for the electric kettle, the temperature can be set through a key, the electric kettle detects no key operation within 6 seconds after being set, buzzing is carried out for 1 sound (0.2 second), and the machine starts to heat.

The mode of operation of the electric kettle will now be described as follows:

1. temperature adjustment mode: starting full power heating to set temperature, stopping heating, when the temperature of the kettle body is lower than the target temperature, starting heating the heating plate at 300W, and stopping heating when the temperature of the kettle body is higher than the set temperature; the heating was repeated in this manner until the end of 24 hours. 2. A thermal regulation mode: starting full-power heating to set temperature and stopping heating, when the temperature of the kettle body is lower than the target temperature, starting heating by the heating plate at 300W, and stopping heating when the temperature of the kettle body is higher than the set temperature; the heating was repeated in this manner until the end of 24 hours. 3. Coffee mode: starting full-power heating to a set temperature and stopping heating, starting heating the heating plate at 300W when the temperature of the kettle body is lower than the target temperature, and stopping heating when the temperature of the kettle body is higher than the set temperature; the heating was repeated in this manner until the end of 24 hours. 4. A tea making mode: starting full power heating to set temperature and then stopping heating, when the temperature of the kettle body is lower than the target temperature, starting heating by the heating plate at 300W, stopping heating when the temperature of the kettle body is higher than the set temperature, and repeating the heating until the heating is finished for 24 hours. 5. Boiling mode: starting full-power heating to boil, buzzing for 12s continuously to prompt water boiling to stop heating, immediately displaying the actual temperature and the target temperature by a digital screen when the temperature of the kettle body is lower than 100 ℃, and keeping the temperature at low power (300W) for 60 ℃ until the end of 24 hours. 6. Intermittent boiling mode: starting full-power heating to boil, turning to 500W for intermittent heating for 30 minutes (heating for 15 seconds and stopping for 45 seconds), then buzzing two sounds to prompt that water boiling stops heating, immediately displaying the actual temperature and the target temperature of 60 ℃ by a digital screen when the temperature of the kettle body is lower than 100 ℃, and keeping the temperature of 60 ℃ by low power (300W) until the end of 24 hours.

The electric kettle has an anti-dry heating mode, no water, over-temperature, buzzing alarm and E2 display, and can normally work only by cooling the heating plate after the power supply is cut off.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

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

Claims (9)

1. An electric kettle, comprising:

the kettle body (10) comprises an inner shell (11) and an outer shell (12), wherein the inner shell (11) is provided with a containing cavity (111) for containing liquid to be heated, a heat insulation cavity (13) is formed between the outer surface of the side wall of the inner shell (11) and the inner surface of the side wall of the outer shell (12), a mounting cavity is formed between the outer surface of the bottom of the inner shell (11) and the inner surface of the bottom of the outer shell (12) and used for mounting a heating device (14), and the heat insulation cavity (13) is used for preventing heat in the containing cavity (111) from being transferred to the outer surface of the outer shell (12);

-a base (20), said base (20) being intended to carry said kettle body (10), said base (20) having a connector (21), said heating means (14) having an electrically conductive state of contact with said connector (21), and said heating means (14) having an electrically de-energized state of disengagement from said connector (21).

2. The electric kettle according to claim 1, characterized in that the heat insulation cavity (13) is a vacuum structure, or the heat insulation cavity (13) is filled with heat insulation material.

3. The electric kettle according to claim 1, characterized in that said heating means (14) comprise:

the heating element (141) is used for heating the liquid to be heated, and the heating element (141) is attached to the bottom of the inner shell (11);

the temperature controller (142), the temperature controller (142) is connected with the shell (12), the temperature controller (142) has a normal state when the temperature is lower than the preset temperature, and the temperature controller (142) has a trigger state when the temperature is not lower than the preset temperature;

wherein, when the temperature controller (142) is in the trigger state, the electrical connection between the heating element (141) and the connector (21) is cut off.

4. The electric kettle according to claim 3, characterized in that the heating element (141) is a PTC element and/or the heating element (141) is a heat generating tube.

5. The electric kettle as claimed in claim 1, characterized in that the bottom of the housing (12) is provided with a mounting step circumferentially, and the top of the base (20) is provided with a mounting projection.

6. The electric kettle according to claim 1, characterized in that the housing (12) is made of thermochromic material and/or the housing (12) is made of material with low thermal conductivity.

7. The electric kettle as claimed in claim 1, characterised in that the outer shell (12) is detachably connected to the inner shell (11) or the outer shell (12) is provided integrally with the inner shell (11).

8. Electric kettle according to claim 1, characterized in that a controller is arranged on the base (20) for adjusting the operating state of the heating device (14).

9. An electric kettle as claimed in claim 1, characterised in that the housing (12) is provided with an air inlet and an air outlet, the air inlet being provided with a first shutter means and the air outlet being provided with a second shutter means.

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