CN219680342U - Electric kettle heat preservation device - Google Patents
Electric kettle heat preservation device Download PDFInfo
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- CN219680342U CN219680342U CN202222568955.XU CN202222568955U CN219680342U CN 219680342 U CN219680342 U CN 219680342U CN 202222568955 U CN202222568955 U CN 202222568955U CN 219680342 U CN219680342 U CN 219680342U
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- Prior art keywords
- bimetallic strip
- layer
- passive layer
- thermal bimetallic
- thermal
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- 238000004321 preservation Methods 0.000 title claims abstract description 38
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 16
- 230000008859 change Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The utility model discloses a heat preservation device of an electric kettle, which can improve the structural simplicity and reduce the economic cost. The electric kettle heat preservation device in the utility model comprises: a base, a thermal bimetallic strip and a switch control rod; the passive layer of the thermal bimetallic strip is in a circular ring shape, and the active layer of the thermal bimetallic strip is positioned at the center of the inner part of the passive layer of the thermal bimetallic strip and is fixedly connected with the passive layer; the driving layer of thermal bimetallic strip is connected with base fixed connection, and the passive layer of thermal bimetallic strip is connected with one end of switch control stick in the supporting, is provided with the radian of predetermineeing between driving layer and the passive layer, and the driving layer is for keeping away from the perk of switch control stick direction, and the switch control stick is used for controlling the opening and shutting of insulation switch of insulation circuit, and when the temperature of thermal bimetallic strip was less than predetermineeing the temperature, the passive layer of thermal bimetallic strip was rebounded to the direction of keeping away from the switch control stick, and the switch control stick supports the passive layer and produces the displacement in order to close insulation switch thereby intercommunication insulation circuit.
Description
Technical Field
The utility model relates to the technical field of electric kettles, in particular to an electric kettle heat preservation device.
Background
The electric kettle generally has a heat preservation function, the heat preservation heating pipe is independently controlled by a heat preservation switch, a user can control and select whether to preserve heat, the heat preservation power is generally below 50W, and the electricity consumption is generally not more than 0.1 degree in one hour. The key component of the electric kettle for heat preservation is a temperature controller.
In the prior art, a temperature sensor of an electric kettle is designed on the electric kettle to detect the temperature in the kettle, and the heat preservation circuit of a heating base is controlled to be communicated under the condition that the temperature is lower than a certain preset value so that a heat preservation heating pipe in the heating base works, and then water in the kettle is preserved.
But the electric kettle and the heating base are respectively independent parts, the connection between the temperature sensors arranged on the two electric kettles and the heating base can be complex and complicated, and the structural design and the installation requirements on the temperature sensors on the electric kettles can be high, so that the economic cost is high.
Disclosure of Invention
In order to solve the technical problems, the utility model provides an electric kettle heat preservation device, which can improve the structural simplicity and reduce the economic cost, and is specifically referred to as the following example.
The utility model provides an electric kettle heat preservation device, comprising: a base, a thermal bimetallic strip and a switch control rod;
the passive layer of the thermal bimetallic strip is in a circular ring shape, and the active layer of the thermal bimetallic strip is positioned at the center of the circle inside the passive layer of the thermal bimetallic strip and is fixedly connected with the passive layer;
the driving layer of thermal bimetallic strip with base fixed connection, thermal bimetallic strip's passive layer with the one end of switch control stick is supported the top and is connected, the driving layer with be provided with the radian of predetermineeing between the passive layer, the driving layer orientation keep away from the switch control stick direction perk, the switch control stick is used for controlling thermal insulation switch's of insulation circuit open and shut, when thermal bimetallic strip's temperature is less than predetermineeing the temperature, thermal bimetallic strip's passive layer to keep away from the direction resilience of switch control stick, the switch control stick supports the top passive layer produces the displacement in order to close thermal insulation switch thereby intercommunication insulation circuit.
Optionally, a buckle is arranged on the base, the buckle sleeve is arranged on the outer side of the active layer of the thermal bimetallic strip, and the inner wall of the buckle sleeve is attached to the outer wall of the thermal bimetallic strip.
Optionally, the active layer of the thermal bimetallic strip is trapezoid, the width of one end of the active layer connected with the passive layer is larger than the width of the other end of the active layer, and the side wall of the active layer is fixedly connected with the side wall of the buckle in a propping manner.
Optionally, a limiting hole is formed in the active layer, a limiting column is arranged on the base, and the limiting column penetrates through the limiting hole and is attached to the inner wall of the limiting hole.
Optionally, the active layer of the thermal bimetallic strip is made of copper, and the passive layer of the thermal bimetallic strip is made of nickel.
Optionally, a surface width of the ring of the passive layer near the switch control rod portion is smaller than a surface width of the ring of the passive layer far from the switch control rod portion.
Optionally, the thickness of the passive layer of the thermal bimetallic strip is 0.1mm-1mm.
Optionally, a main switch is arranged on the base and is connected in series in the heat insulation circuit, and the main switch is used for controlling the on-off of the heat insulation circuit.
Optionally, the switch control rod is made of ceramic.
Optionally, the predetermined arc between the active layer and the passive layer is 0.087rad to 0.785rad.
From the above technical scheme, the utility model has the following advantages:
the passive layer of the thermal bimetallic strip arranged in the electric kettle heat preservation device is in a ring shape, the active layer of the thermal bimetallic strip is positioned at the center of the inner part of the passive layer of the thermal bimetallic strip and is fixedly connected with the passive layer, the active layer of the thermal bimetallic strip is fixedly connected with the base, the passive layer of the thermal bimetallic strip is in propping connection with one end of the switch control rod, a preset radian is arranged between the active layer and the passive layer, and the active layer is tilted towards the direction far away from the switch control rod.
In the practical application process, the thermal bimetallic strip is located on the base, when the temperature in the kettle changes from higher temperature to lower temperature, the thermal expansion shrinkage deformation of the active layer of the thermal bimetallic strip is larger than that of the passive layer, and because the active layer and the passive layer are similar to a concentric circle structure and are provided with a preset radian, the passive layer of the thermal bimetallic strip can rebound and bend towards one side of the active layer, namely rebound towards the direction far away from the switch control rod, so that the switch control rod is propped against the passive layer to generate displacement to close the heat preservation switch, thereby the heat preservation circuit is communicated to control the heat preservation heating pipe to heat and preserve heat, and the heat preservation heating pipe of the electric kettle can be controlled to heat and preserve heat relatively simply through the mechanical movement of the active layer and the passive layer on the base caused by the change of the temperature curvature, thereby reducing the economic cost.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a thermal insulation device of an electric kettle in the utility model.
Detailed Description
In the present utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely used to illustrate the relative positional relationships between the components or portions, and do not particularly limit the specific mounting orientations of the components or portions.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure for the purpose of understanding and reading by those skilled in the art, and are not intended to limit the scope of the utility model, which is defined by the appended claims, so that any structural modifications, proportional changes, or dimensional adjustments should not be made in the essential significance of the present disclosure without affecting the efficacy or achievement of the present utility model.
The utility model provides a heat preservation device of an electric kettle, which can improve the structural simplicity and reduce the economic cost.
Referring to fig. 1, the electric kettle heat preservation device of the present utility model includes: a base 1, a thermal bimetallic strip 2 and a switch control rod 3;
the passive layer 201 of the thermal bimetallic strip 2 is annular, and the active layer 202 of the thermal bimetallic strip 2 is positioned at the center of the circle inside the passive layer 201 of the thermal bimetallic strip 2 and is fixedly connected with the passive layer 201;
the driving layer 202 of the thermal bimetallic strip 2 is fixedly connected with the base 1, the driven layer 201 of the thermal bimetallic strip 2 is in propping connection with one end of the switch control rod 3, a preset radian is arranged between the driving layer 202 and the driven layer 201, the driving layer 202 is tilted towards the direction far away from the switch control rod 3, the switch control rod 3 is used for controlling the opening and closing of a heat preservation switch of a heat preservation circuit, when the temperature of the thermal bimetallic strip 2 is lower than a preset temperature, the driven layer 201 of the thermal bimetallic strip 2 rebounds towards the direction far away from the switch control rod 3, and the switch control rod 3 props against the driven layer 201 to displace to close the heat preservation switch so as to be communicated with the heat preservation circuit.
The thermal bimetal 2 is a mechanical device for converting temperature change into mechanical displacement, the thermal expansion coefficients of the component layers of the thermal bimetal 2 are different, namely, the expansion coefficients of the active layer 202 and the passive layer 201 are different, when the temperature change occurs, the deformation of the active layer 202 is larger than the deformation of the passive layer 201, and the elongation or shortening of the active layer 202 and the passive layer 201 is different, so that one metal sheet is bent, and the corresponding switch control rod 3 is driven, so that the circuit is closed or opened, and the curvature of the composite material is changed to generate deformation. Wherein the higher expansion coefficient is referred to as the active layer 202; the material of the active layer 202 of the thermal bimetal 2 is copper, the material of the passive layer 201 of the thermal bimetal 2 is nickel, and the average linear expansion coefficient of copper is 15.0×10 at room temperature to 100deg.C -6 Per DEG C, and nickel has an average linear expansion coefficient of 13.0 x 10 -6 /℃。
It should be noted that, the structure between the active layer 202 and the passive layer 201 is similar to the concentric structure, and a preset radian is set between the active layer 202 and the passive layer 201, for example, when the temperature of the thermal bimetallic strip 2 is 20 ℃, the preset radian between the active layer 202 and the passive layer 201 is 0.087rad, when the temperature of the thermal bimetallic strip 2 is 80 ℃, 0.785rad, that is, when the thermal bimetallic strip 2 is at a lower temperature, a relatively small radian is set between the active layer 202 and the passive layer 201, when the temperature is reduced, the thermal expansion shrinkage deformation of the active layer 202 due to the temperature is greater than the thermal expansion shrinkage deformation of the passive layer 201, so that the radian between the active layer 202 and the passive layer 201 becomes smaller, and because the active layer 202 is fixed on the base 1, the passive layer 201 is bent towards the direction close to the active layer 202 according to the lever principle, that the passive layer 201 is guided upwards, so that the switch control rod 3 is displaced to control the connection of the thermal insulation circuit, that the thermal insulation circuit is controlled, that when the preset lower temperature is preset, the thermal expansion shrinkage deformation of the active layer 202 is greater than the passive layer 201 is greater than the thermal expansion shrinkage deformation of the active layer 201, that the thermal expansion deformation of the active layer is greater than the base 1, that the thermal expansion deformation of the active layer 201 is greater than the thermal expansion deformation of the active layer is stopped towards the base 1. It will be appreciated that the above-mentioned setting of the preset lower temperature and the preset higher temperature is determined by the control of the preset radian and the expansion coefficient between the active layer 202 and the passive layer 201, because the ratio between the thermal expansion deformation of the active layer 202 and the passive layer 201 and the temperature change tends to be linear, and the preset lower temperature and the preset higher temperature can be adjusted by combining the preset radian between the active layer 202 and the passive layer 201 set at normal temperature and the difference of the expansion coefficients of the two.
It should be noted that, the heat preservation process of the electric kettle is also similar to the heating dry-heating prevention process of the electric kettle, the heating dry-heating prevention structure of the electric kettle can also use the structure of the thermal bimetal 2 with the heat preservation function, and the preset radian and the material composition between the active layer 202 and the passive layer 201 are adjusted, so that when the temperature in the electric kettle reaches 100 ℃, the heating bimetal expands and deforms to control the heating circuit to be disconnected, and the heating process is stopped, thereby achieving the purpose of preventing dry-heating.
It can be understood that the thermal bimetal 2 in the utility model can be contacted with the bottom of the electric kettle so as to receive heat transmitted from the bottom of the electric kettle, the thermal bimetal 2 has a certain error delay with the conduction of water heat in the electric kettle, so that the upper temperature of the thermal bimetal 2 is different from the temperature in the kettle, but the radian and the average linear expansion coefficient of the active layer 202 and the passive layer 201 can be adjusted in advance as far as possible by the thermal bimetal 2 when in design, so that the starting temperature of the heat preservation function of the electric kettle is a preset temperature.
In the utility model, the thermal bimetallic strip 2 is arranged on the base, the thermal bimetallic strip 2 can generate mechanical movement along with temperature change, so that the switch control rod 3 is controlled to move to be communicated with the heat insulation circuit, the concentric annular structure formed by the active layer 202 and the passive layer 201 of the thermal bimetallic strip 2 can easily and conveniently conduct expansion deformation generated on the thermal bimetallic strip 2 along with temperature change, the structure is simple, the installation and connection are convenient, and the economic cost of the electric kettle can be reduced.
Optionally, a buckle 101 is provided on the base 1, the buckle 101 is sleeved outside the active layer 202 of the thermal bimetallic strip 2, and the inner wall of the buckle 101 sleeve is attached to the outer wall of the thermal bimetallic strip 2.
Optionally, the active layer 202 of the thermal bimetal 2 is trapezoidal, the width of one end of the active layer 202 connected with the passive layer 201 is larger than the width of the other end of the active layer 202, and the side wall of the active layer 202 is fixedly connected with the side wall of the buckle 101 in a propping manner.
In this embodiment, the structure of the buckle 101 is similar to the buckle belt of the waistband underpants, and the active layer 202 is inserted into the buckle 101 and the side wall of the active layer abuts against the side wall of the buckle 101, so as to limit and fix the active layer 202 of the thermal bimetal 2, thereby reducing the possibility of loosening the connection between the thermal bimetal 2 and the switch control rod 3 caused by vibration of the electric kettle main body, and reducing the possibility of sending change or failure of the heat preservation temperature as much as possible.
Optionally, a limiting hole is formed in the active layer 202, and a limiting post 102 is formed in the base 1, where the limiting post 102 passes through the limiting hole and is attached to the inner wall of the limiting hole.
In this embodiment, the limiting post 102 passes through the limiting hole provided on the active layer 202, so as to lock the active layer 202, and further fix the active layer 202, whose effect is similar to the above-mentioned clamping effect of the buckle 101, and will not be described here.
Optionally, the active layer 202 of the thermal bimetal 2 is made of copper, and the passive layer 201 of the thermal bimetal 2 is made of nickel.
In the case where the room temperature is between about 27 ℃ and 100 ℃, the average linear expansion coefficient of copper is larger than that of nickel, and the error between the two is small, and the material composition of the active layer 202 and the passive layer 201 of the thermal bimetal 2 can be used as the material composition of the active layer 202 and the passive layer 201, besides copper and nickel, it can be understood that the material composition of the active layer 202 and the passive layer 201 can be other metals or nickel alloys, and the utility model is not limited herein.
Alternatively, the surface width of the portion of the annular ring of the passive layer 201 that is close to the switch control rod 3 is smaller than the surface width of the portion of the annular ring of the passive layer 201 that is far from the switch control rod 3.
In this embodiment, the ring of the passive layer 201 can understand the ring with an irregular shape, one side is wide and thick, and one side is thin, and it is obvious that when the passive layer 201 generates expansion deformation, the acting forces received by the two sides are approximately the same, but the thin side has a smaller acting surface, so that the expansion deformation generated by the thin side of the passive layer 201 is larger, thereby amplifying the action of the passive layer 201 to guide the control switch control rod 3, and improving the implementation stability of the heat preservation function.
Alternatively, the passive layer 201 of the thermal bimetal 2 has a thickness of 0.1mm-1mm.
Optionally, a main switch 103 is arranged on the base 1, the main switch 103 is connected in series in the heat insulation circuit, and the main switch 103 is used for controlling the on-off of the heat insulation circuit.
Optionally, the material of the switch control rod 3 is ceramic.
Optionally, the predetermined arc between the active layer 202 and the passive layer 201 is 0.087rad-0.785rad.
It should be noted that the foregoing application and the detailed description are intended to demonstrate practical applications of the technical solution provided by the present utility model, and should not be construed as limiting the scope of the present utility model. Various modifications, equivalent alterations, or improvements will occur to those skilled in the art, and are within the spirit and principles of the utility model. The scope of the utility model is defined by the appended claims.
Claims (10)
1. An electric kettle heat preservation device, characterized by comprising: a base, a thermal bimetallic strip and a switch control rod;
the passive layer of the thermal bimetallic strip is in a circular ring shape, and the active layer of the thermal bimetallic strip is positioned at the center of the circle inside the passive layer of the thermal bimetallic strip and is fixedly connected with the passive layer;
the driving layer of thermal bimetallic strip with base fixed connection, thermal bimetallic strip's passive layer with the one end of switch control stick is supported the top and is connected, the driving layer with be provided with the radian of predetermineeing between the passive layer, the driving layer orientation keep away from the switch control stick direction perk, the switch control stick is used for controlling thermal insulation switch's of insulation circuit open and shut, when thermal bimetallic strip's temperature is less than predetermineeing the temperature, thermal bimetallic strip's passive layer to keep away from the direction resilience of switch control stick, the switch control stick supports the top passive layer produces the displacement in order to close thermal insulation switch thereby intercommunication insulation circuit.
2. The electric kettle heat preservation device according to claim 1, wherein a buckle is arranged on the base, the buckle is sleeved on the outer side of the active layer of the thermal bimetallic strip, and the inner wall of the buckle sleeve is attached to the outer wall of the thermal bimetallic strip.
3. The electric kettle heat preservation device according to claim 2, wherein the active layer of the thermal bimetallic strip is trapezoid, the width of one end of the active layer connected with the passive layer is larger than the width of the other end of the active layer, and the side wall of the active layer is fixedly connected with the side wall of the buckle in a propping mode.
4. The electric kettle heat preservation device according to claim 3, wherein the driving layer is provided with a limiting hole, the base is provided with a limiting column, and the limiting column penetrates through the limiting hole and is attached to the inner wall of the limiting hole.
5. The electric kettle heat preservation device according to claim 1, wherein the active layer of the thermal bimetallic strip is made of copper, and the passive layer of the thermal bimetallic strip is made of nickel.
6. The insulating device of claim 1, wherein the surface of the ring of the passive layer adjacent to the switch control rod portion has a smaller width than the surface of the ring of the passive layer remote from the switch control rod portion.
7. An electric kettle insulating device according to any one of claims 1 to 6, wherein the passive layer of the thermal bimetal is 0.1mm-1mm thick.
8. The electric kettle heat preservation apparatus of any one of claims 1 to 6, wherein a master switch is provided on the base, the master switch being connected in series in the heat preservation circuit, the master switch being used to control on-off of the heat preservation circuit.
9. The electric kettle insulating device according to any one of claims 1 to 6, wherein the switch control rod is made of ceramic.
10. The electric kettle insulating device of any one of claims 1 to 6, wherein the predetermined arc between the active layer and the passive layer is 0.087rad to 0.785rad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222568955.XU CN219680342U (en) | 2022-09-26 | 2022-09-26 | Electric kettle heat preservation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222568955.XU CN219680342U (en) | 2022-09-26 | 2022-09-26 | Electric kettle heat preservation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219680342U true CN219680342U (en) | 2023-09-15 |
Family
ID=87938633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222568955.XU Active CN219680342U (en) | 2022-09-26 | 2022-09-26 | Electric kettle heat preservation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219680342U (en) |
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2022
- 2022-09-26 CN CN202222568955.XU patent/CN219680342U/en active Active
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