CN212521509U - Liquid level sensor and kettle with same - Google Patents
Liquid level sensor and kettle with same Download PDFInfo
- Publication number
- CN212521509U CN212521509U CN202020252155.5U CN202020252155U CN212521509U CN 212521509 U CN212521509 U CN 212521509U CN 202020252155 U CN202020252155 U CN 202020252155U CN 212521509 U CN212521509 U CN 212521509U
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- China
- Prior art keywords
- sensor
- kettle body
- kettle
- liquid level
- level sensor
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- Expired - Fee Related
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- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 230000006698 induction Effects 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000036541 health Effects 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 244000061520 Angelica archangelica Species 0.000 description 1
- 240000008397 Ganoderma lucidum Species 0.000 description 1
- 235000001637 Ganoderma lucidum Nutrition 0.000 description 1
- 235000001287 Guettarda speciosa Nutrition 0.000 description 1
- 241001506047 Tremella Species 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Images
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a liquid level sensor and a water kettle with the same, which comprises a kettle body and a capacitive sensor, wherein the capacitive sensor is positioned at the side wall of the lower side of the kettle body; the capacitive sensor comprises a sensor shell, a circuit board is arranged in the sensor shell, an induction layer is arranged on one side, facing the kettle body, of the sensor shell, and the induction layer is connected with the circuit board; the induction layer is tightly attached to the kettle body; the sensor aims at the working characteristics of the electric kettle, improves the liquid level monitoring effect of the capacitive sensor through the design of the sensing layer of the capacitive sensor, reduces the false alarm, and is particularly suitable for the characteristics of a health preserving kettle.
Description
Technical Field
The utility model relates to the technical field of household appliances, especially a liquid level sensor and have its kettle.
Background
The electric kettle is convenient to use and high in heating speed, and is widely applied. In order to prevent the electric kettle from being dried or overflowing in the heating process, the water level in the electric kettle needs to be detected, so that the heating of the electric kettle is controlled, and the dry heating is avoided. Moreover, as the functions and types of electric kettles, such as health preserving kettles and the like, are increased, the requirement for liquid level monitoring is higher as the electric kettles are no longer satisfied with only heating white boiled water.
At present, a single-point capacitance mode is generally adopted to detect the liquid level. Namely, a capacitance type detection sensor is arranged at a liquid level detection point on the kettle, and an induction signal value obtained by the capacitance type detection sensor through a probe is compared with a reference value so as to determine the liquid level in the electric kettle, whether dry heating or overflow occurs or not, and therefore heating of the electric kettle is controlled. However, in practice, the difference of the reference values will cause inaccurate judgment for determining whether dry heating occurs, for example, water drops dropping after water vapor in the kettle is cooled, and food materials such as tremella, angelica, ganoderma lucidum and the like which are easy to foam in the health preserving kettle may interfere with the monitoring of the sensor, and the dry heating preventing effect of the electric kettle is reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a liquid level sensor and a kettle with the same.
The utility model provides a technical scheme that its technical problem adopted is:
a liquid level sensor comprises a kettle body and a capacitive sensor, wherein the capacitive sensor is positioned on the side wall of the lower side of the kettle body; the capacitive sensor comprises a sensor shell, a circuit board is arranged in the sensor shell, an induction layer is arranged on one side, facing the kettle body, of the sensor shell, and the induction layer is connected with the circuit board; the induction layer is tightly attached to the kettle body.
As some embodiments of the present invention, the sensing layer is conductive silica gel.
As some embodiments of the present invention, the inductive layer is coated with a conductive coating.
As some embodiments of the present invention, the sensing layer is a metal sheet.
As some embodiments of the utility model, the external side of the kettle body is arc-shaped, the induction layer faces one side of the kettle body is provided with an arc-shaped surface.
As some embodiments of the present invention, the circuit board is connected with a power line, a signal line and a ground line.
As some embodiments of the utility model, the sensor housing inside wall is opened there is the ladder groove, the border of circuit board is installed on the ladder groove, sensor housing corresponds ladder groove position and is provided with the opening position, the response layer with the opening position corresponds.
A kettle comprises the liquid level sensor.
As some embodiments of the utility model, the kettle body is provided with handle and pouring port, wherein the handle with the pouring port is located the both sides of the opposite direction of the kettle body, capacitanc sensor is located handle below position.
The utility model has the advantages that: the sensor aims at the working characteristics of the electric kettle, improves the liquid level monitoring effect of the capacitive sensor through the design of the sensing layer of the capacitive sensor, reduces the false alarm, and is particularly suitable for the characteristics of a health preserving kettle.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the operation of the present invention;
fig. 2 is a perspective view of the present invention;
fig. 3 is a cross-sectional view of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. Rather, the invention can be practiced without these specific details, i.e., those skilled in the art can more effectively describe the nature of their work to others skilled in the art using the description and illustrations herein. Furthermore, it should be noted that the terms "front side", "rear side", "upper side", "lower side" and the like used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively, and those skilled in the art should not understand that the technology beyond the scope of the present application is simply and innovatively modified.
It should be understood that the specific embodiments described herein are merely illustrative of the present application and do not limit the scope of the actual protection. Well-known manufacturing methods, control procedures, component dimensions, general component details, and the like, have not been described in detail so as not to obscure the present invention.
Referring to fig. 1, the liquid level sensor comprises a kettle body 100 and a capacitive sensor 200, wherein the capacitive sensor 200 is located on the side wall of the lower side of the kettle body 100, and the capacitive sensor 200 is used for monitoring the liquid level condition of the lower position in the kettle body 100 to avoid dry burning. The specific structure of the kettle body 100 can refer to the existing electric kettle.
Referring to fig. 2, the capacitive sensor 200 includes a sensor housing 210, and the sensor housing 210 serves as a structure similar to a protective case, and functions as protection and waterproofing. Referring to fig. 2 and 3, the sensor housing 210 has a circuit board 220 built therein, and the specific circuit structure and operation principle of the circuit board 220 may refer to the existing capacitive sensor. The sensor shell 210 is provided with the inductive layer 230 towards one side of the kettle body 100, the inductive layer 230 is connected with the circuit board 220, and the inductive layer 230 is tightly attached to the kettle body 100, so that the liquid level in the kettle body 100 can be monitored more accurately, and compared with the original probe type capacitive sensor structure, the problem of misinformation can be reduced better. The sensing layer 230 and the circuit board 220 may be directly connected, or may be electrically connected through a wire or the like.
The sensor housing 210 is provided with a stepped groove 211 on the inner side wall, the edge of the circuit board 220 is mounted on the stepped groove 211, the sensor housing 210 is provided with an opening 212 corresponding to the stepped groove 211, the sensing layer 230 corresponds to the opening 212, the structure ensures that the circuit board 220 and the sensing layer 230 can be stably mounted, and meanwhile, the connection between the circuit board 220 and the sensing layer 230 is stable enough.
The circuit board 220 is connected with a power line 221, a signal line 222 and a ground line 223, wherein the power line 221 is connected with the positive electrode of the circuit board 220, the signal line 222 is used for transmitting signals, and the ground line 223 is connected with the negative electrode of the circuit board 220, so that the capacitive sensor 200 can work stably. In practical implementation, the sensor housing 210 is provided with a wire outlet 213, so that the power line 221, the signal line 222 and the ground line 223 can extend out of the sensor housing 210.
The technology is described below in connection with certain embodiments, where "embodiments" are referred to herein as "embodiments" or "embodiments" of the invention. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments:
as an embodiment, the sensing layer 230 is made of conductive silica gel, the conductive silica gel is made of silicone rubber as a base rubber, and conductive fillers and the like are added to the base rubber for blending and vulcanizing, the specific components and the manufacturing process can refer to the existing conductive silica gel preparation technology, the sensing layer 230 is made of conductive silica gel, and therefore the conductive silica gel has good conductive stability and thermal stability, and is easier to attach to the kettle body 100, and further the detection effect is improved;
as another example, the sensing layer 230 is coated with a conductive coating, that is, the sensing layer 230 can be made of a non-conductive material as a base material and coated with a conductive paste to form a conductive coating, so that the sensing layer 230 forms a conductive sensing structure, the base material of the sensing layer 230 of this embodiment is more widely selected, and the conductive coating must be coated on the entire surface of the sensing layer 230, especially on the sensing layer 230 facing the kettle body 100 and the circuit board 220, to ensure the detection effect;
as another embodiment, the sensing layer 230 is a metal sheet, and the monitoring operation of the capacitive sensor 200 is implemented by using the conductivity of the metal sheet.
The outer side of the kettle body 100 is arc-shaped, the kettle body 100 can be cylindrical, trapezoidal and conical or curved, and the induction layer 230 is provided with an arc-shaped surface 231 towards one side of the kettle body 100 in a targeted manner, so that the induction layer 230 can be more attached to the kettle body 100, and the liquid level monitoring effect of the capacitive sensor 200 is ensured. A kettle, wherein the type, shape and material of the kettle are not limited, and the kettle comprises the liquid level sensor. The kettle body 100 may be made of metal, glass or ceramic, and particularly, the present technology is very suitable for the characteristics of a health preserving kettle made of glass. As an example, as shown in fig. 1, the kettle body 100 of the kettle may be a split structure, including a base 130 and a kettle body 140, the capacitive sensor 200 is connected to the base 130, and the capacitive sensor 200 corresponds to a side wall of a lower side of the kettle body 140. The capacitive sensor 200 may be fixedly connected to the base 130, or may be connected to the base by a movable structure, which is not limited herein, and does not affect the implementation of the present technology. By way of example, the kettle body 100 may be a unitary structure with the capacitive sensor 200 located at a side wall of the underside of the kettle body 100.
The kettle body 100 is provided with a handle 110 and a water pouring port 120, wherein the handle 110 and the water pouring port 120 are positioned on two sides of the kettle body 100 in opposite directions, and the capacitive sensor 200 is positioned below the handle 110, so that the structure is convenient for wiring of the capacitive sensor 200 and can reduce the possibility that the capacitive sensor 200 is damaged.
According to the above principle, the present invention can also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention.
Claims (9)
1. A liquid level sensor comprising a kettle body (100) and a capacitive sensor (200), the capacitive sensor (200) being located at a side wall of the underside of the kettle body (100), characterized in that:
the capacitive sensor (200) comprises a sensor shell (210), a circuit board (220) is arranged in the sensor shell (210), an induction layer (230) is arranged on one side, facing the kettle body (100), of the sensor shell (210), and the induction layer (230) is connected with the circuit board (220);
the induction layer (230) is tightly attached to the kettle body (100).
2. A liquid level sensor as claimed in claim 1, wherein: the induction layer (230) is conductive silica gel.
3. A liquid level sensor as claimed in claim 1, wherein: the inductive layer (230) is coated with a conductive coating.
4. A liquid level sensor as claimed in claim 1, wherein: the induction layer (230) is a metal sheet.
5. A liquid level sensor as claimed in claim 1, wherein: the outer side of the kettle body (100) is arc-shaped, and an arc-shaped surface (231) is arranged on one side, facing the kettle body (100), of the induction layer (230).
6. A liquid level sensor as claimed in claim 1, wherein: the circuit board (220) is connected with a power line (221), a signal line (222) and a ground line (223).
7. A liquid level sensor as claimed in claim 1, wherein: sensor housing (210) inside wall opens there is ladder groove (211), the border of circuit board (220) is installed on ladder groove (211), sensor housing (210) correspond ladder groove (211) position and are provided with opening position (212), response layer (230) with opening position (212) correspond.
8. A kettle, characterized in that it comprises a level sensor according to any one of claims 1 to 7.
9. A kettle as claimed in claim 8, wherein: the kettle body (100) is provided with a handle (110) and a water pouring port (120), wherein the handle (110) and the water pouring port (120) are located on two sides of the kettle body (100) in opposite directions, and the capacitive sensor (200) is located below the handle (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020252155.5U CN212521509U (en) | 2020-03-04 | 2020-03-04 | Liquid level sensor and kettle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020252155.5U CN212521509U (en) | 2020-03-04 | 2020-03-04 | Liquid level sensor and kettle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212521509U true CN212521509U (en) | 2021-02-12 |
Family
ID=74526323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020252155.5U Expired - Fee Related CN212521509U (en) | 2020-03-04 | 2020-03-04 | Liquid level sensor and kettle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212521509U (en) |
-
2020
- 2020-03-04 CN CN202020252155.5U patent/CN212521509U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |