CN215809373U - Capacitance type multi-section water level sensing device and electric heating appliance thereof - Google Patents
Capacitance type multi-section water level sensing device and electric heating appliance thereof Download PDFInfo
- Publication number
- CN215809373U CN215809373U CN202121641613.5U CN202121641613U CN215809373U CN 215809373 U CN215809373 U CN 215809373U CN 202121641613 U CN202121641613 U CN 202121641613U CN 215809373 U CN215809373 U CN 215809373U
- Authority
- CN
- China
- Prior art keywords
- water level
- capacitance
- column
- sensing device
- induction column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a capacitance type multi-stage water level sensing device and an electric heating appliance thereof, wherein the capacitance type multi-stage water level sensing device comprises a capacitance sensing column generating a corresponding capacitance value according to the water level and a temperature sensor for monitoring the temperature; the capacitance induction column is at least partially positioned at a set lowest water level and at least partially positioned at a set highest water level; the temperature sensor is arranged on the capacitance induction column in a built-in mode; the capacitance induction column circuit is connected with a water level temperature monitoring circuit which distinguishes the water level according to the capacitance value change; and the temperature sensor and/or the water level temperature monitoring circuit are/is connected with the main control module. The capacitance type multi-section water level sensing device distinguishes the water level according to the change of the capacitance value, has a simple structure and reliable performance, can realize multi-section monitoring of the water level, and improves the practicability of products.
Description
Technical Field
The utility model relates to a water level sensor, in particular to a capacitance type multi-stage water level sensing device and an electric heating appliance thereof.
Background
In the traditional motor heating device, a water level sensor for monitoring the lowest water level needs to be arranged on a container in order to prevent dry burning, and a water level sensor for monitoring the highest water level needs to be arranged on the container in order to prevent overflow, however, the traditional water level sensor can only monitor a single water level due to the structural/principle limitation of the water level sensor, and a corresponding water level sensor needs to be arranged if other water levels need to be monitored; however, container inner chamber space is limited, sets up too much level sensor and can occupy most space, reduces the water storage capacity, and the cost increase is used for monitoring the level sensor of highest water level and minimum water level respectively only to set up moreover, then is difficult to satisfy the demand in each aspect of the user, is unfavorable for realizing intelligent control moreover.
Therefore, further improvements to existing water level sensors are needed.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to overcome the above-mentioned shortcomings of the prior art, and provides a capacitive multi-stage water level sensing device and an electrical heating appliance thereof, wherein the device distinguishes the water level according to the change of the capacitance value, has a simple structure and reliable performance, and can realize multi-stage monitoring of the water level, thereby improving the practicability of the product.
The purpose of the utility model is realized as follows:
a capacitance type multi-section water level sensing device comprises a capacitance sensing column generating a corresponding capacitance value according to water level, a temperature sensor for monitoring temperature and a water level temperature monitoring circuit for distinguishing the water level and collecting temperature information according to the capacitance value change, wherein the capacitance sensing column and the temperature sensor are respectively in circuit connection with the water level temperature monitoring circuit; the capacitance induction column is at least partially positioned at a set lowest water level and at least partially positioned at a set highest water level; the temperature sensor is arranged on the capacitance induction column in a built-in mode.
In one embodiment, the capacitive sensing column is at least partially exposed in the body of water, and the exposed portion extends from a lowest water level to a highest water level.
In another embodiment, the capacitive multi-stage water level sensor further includes an insulating layer covering the capacitive sensing column, wherein the surface of the capacitive sensing column is isolated by the insulating layer and thus does not contact with the water.
As another specific embodiment, the end of the capacitive sensing column extending to the highest water level is exposed in the water body and is in contact with the water body, and the rest of the capacitive sensing column is covered with the insulating layer so as not to be in contact with the water body.
The insulating layer is a split insulating sleeve sleeved on the surface of the capacitance sensing column or an insulating coating coated on the surface of the capacitance sensing column.
When the insulating layer is the insulating cover, be equipped with spacing boss on the electric capacity response post, spacing boss and insulating cover tip are spacing contradict mutually.
The insulating sleeve is made of materials such as glass, crystal or ceramics; the insulating coating is sprayed on the capacitance induction column through an enamel process.
The capacitance induction column is a hollow column, and the temperature sensor is arranged at a certain height position in an inner cavity of the capacitance induction column.
The capacitance induction column is made of stainless steel, copper materials, silver materials or titanium gold and other materials.
An electric heating appliance comprises a water storage vessel for storing water and a main control module; the capacitance type multi-section water level sensing device is also included; the capacitance induction column is vertically or obliquely arranged in the inner cavity of the water storage vessel; the water level temperature monitoring circuit is connected with the main control module through a circuit.
The capacitive multi-stage water level sensing device also comprises a mounting seat; the water level temperature monitoring circuit is arranged on the mounting seat; one end of the capacitance induction column penetrates through the mounting seat and is connected with the water level temperature monitoring circuit in a circuit mode; and a sealing element is arranged between the capacitance induction column and the water storage vessel.
The utility model has the following beneficial effects:
by setting the capacitance induction column with the monitoring range covering the lowest water level and the highest water level, when the water level gradually rises or falls, the capacitance value generated by the capacitance induction column can generate corresponding change, and the change condition can directly reflect the height of the water level, so that the aim of monitoring the water level is fulfilled; the water level monitoring method can realize multi-stage monitoring of the water level through one capacitance sensing column, namely, the lowest water level and the highest water level can be monitored, any water level between two limit water levels (the lowest water level and the highest water level) can be monitored, accurate, effective and useful parameters are provided for the control of an intelligent system, the capacitance sensing column is small in size, the internal space of a container cannot be occupied, and the container is guaranteed to have the maximum water storage capacity; conversely, the user can be on intelligent system self-defined arbitrary water level, and intelligent system can effectively control the water injection volume according to the capacitance value that self-defined water level corresponds, and accurate control water level satisfies the user demand, and intelligent degree promotes. In addition, through set up temperature sensor on the electric capacity induction column, make it integrate the temperature monitoring function, the integration is better, makes things convenient for the production equipment of product.
Drawings
Fig. 1 is a perspective view of a capacitive multi-stage water level sensing device according to a first embodiment of the present invention.
Fig. 2 is a schematic circuit diagram of a capacitive multi-stage water level sensing device according to a first embodiment of the present invention in a cross-sectional view.
FIG. 3 is a circuit diagram of a capacitive multi-stage water level sensing device according to a first embodiment of the present invention
Fig. 4 is a partial schematic view of an electric heating appliance according to a first embodiment of the present invention.
FIG. 5 is a schematic circuit diagram of a sectional view of a capacitive multi-stage water level sensing device according to a second embodiment of the present invention.
Fig. 6 is a schematic circuit diagram of a capacitive multi-stage water level sensing device according to a third embodiment of the present invention in a cross-sectional view.
Detailed Description
The utility model is further described with reference to the following figures and examples.
First embodiment
Referring to fig. 1 to 3, the capacitive multi-stage water level sensing apparatus 2 according to the present embodiment includes a capacitive sensing column 201 generating a corresponding capacitance value according to a water level, a temperature sensor 205 for monitoring a water temperature, and a water level temperature monitoring circuit 206 for identifying the water level and collecting temperature information according to a change of the capacitance value, wherein the capacitive sensing column 201 and the temperature sensor 205 are respectively electrically connected to the water level temperature monitoring circuit 206; the capacitive sensing column 201 is at least partially located at a set minimum water level H1 and at least partially located at a set maximum water level H2 to monitor any water level between the two limit water levels; the temperature sensor 205 is built in the capacitive sensing column 201.
According to the capacitive multi-stage water level sensing device, the capacitive sensing column 201 with the monitoring range covering the lowest water level H1 and the highest water level H2 is arranged, when the water level gradually rises or falls, the capacitance value generated by the capacitive sensing column 201 can be correspondingly changed, the change condition can directly reflect the height of the water level through the processing and calculation of the water level temperature monitoring circuit 206, and the purpose of monitoring the water level is further achieved; the water level monitoring method can realize multi-stage monitoring of the water level through one capacitance induction column 201, namely, the water level monitoring method can monitor the lowest water level and the highest water level and can also monitor any water level between two limit water levels (the lowest water level and the highest water level) so as to provide accurate, effective and useful parameters for the control of an intelligent system, the capacitance induction column 201 is small in size, does not occupy the internal space of a container, and ensures that the container has the maximum water storage capacity; conversely, the user can be on intelligent system by self-defined arbitrary water level, and intelligent system can effectively control the water injection volume according to the capacitance value that self-defined water level corresponds, and accurate control water level satisfies the user demand, and intelligent degree promotes. In addition, through setting up temperature sensor 205 on electric capacity induction column 201, make this capacitanc multistage water level induction system integrate the temperature monitoring function, the integration is better, has cancelled temperature sensor's independent installation procedure, makes things convenient for the production equipment of product.
Furthermore, the capacitive multi-stage water level sensing device further comprises an insulating layer 202 coated on the surface of the capacitive sensing column 201, the surface of the capacitive sensing column 201 is isolated by the insulating layer 202 and is not in contact with a water body, and the insulating layer 202 can effectively protect the capacitive sensing column 201.
Further, the insulating layer 202 in this embodiment is preferably a split insulating sleeve that is sleeved on the surface of the capacitance sensing column 201 (or the insulating layer 202 is an insulating coating that is coated on the surface of the capacitance sensing column 201), and the insulating layer 202 is tightly attached to the surface of the capacitance sensing column 201.
Furthermore, the insulating layer in this embodiment is preferably an insulating sleeve made of other internal high-temperature insulating materials such as glass, crystal or ceramic; if the insulating layer is an insulating coating, the insulating coating is sprayed on the surface of the capacitance induction column 201 through an enamel process, and the insulating coating can also play a role in corrosion prevention.
Further, the capacitive sensing column 201 is a hollow column, wherein the top of the capacitive sensing column 201 is closed, and the bottom of the capacitive sensing column is open; the temperature sensor 205 is arranged at a certain height position in the inner cavity of the capacitance induction column 201; the temperature sensor 205 in the present embodiment is preferably a thermistor.
Further, the capacitive sensing column 201 is made of other conductive materials such as stainless steel, copper material, silver material or titanium gold.
Referring to fig. 4, the electric heating appliance according to the present embodiment includes a water storage container 1 for storing water, a main control module, and the above-mentioned capacitive multi-stage water level sensing device 2; the capacitance induction column 201 is vertically (or slantingly) arranged in the inner cavity of the water storage vessel 1; the water level temperature monitoring circuit 206 is electrically connected with the main control module.
Further, the capacitive multi-stage water level sensing device 2 further comprises a mounting seat 207; the water level temperature monitoring circuit 206 is arranged in the inner cavity of the mounting seat 207, and in addition, the inner cavity of the mounting seat 207 is filled with epoxy resin filler 208 so as to increase the strength of the mounting seat 207 and protect the water level temperature monitoring circuit 206; the bottom end of the capacitance induction column 201 sequentially penetrates through the bottom of the water storage container 1 and the top of the mounting seat 207, and is connected with the water level temperature monitoring circuit 206 through a rear circuit, and the capacitance induction column 201 and the water level temperature monitoring circuit 206 in the embodiment are electrically welded and fixed; a silica gel plug 209 is arranged in the inner cavity of the capacitance induction column 201; a sealing element 203 is arranged between the capacitance induction column 201 and the water storage vessel 1, the sealing element 203 is sleeved on the surface of the capacitance induction column 201, the top of the sealing element 203 is partially covered with an insulating layer 202, and the bottom end of the sealing element is respectively matched with the capacitance induction column 201 and the bottom of the water storage vessel 1 in a sealing manner; the mounting seat 207 is provided with a screw hole 2071, the fastening screw 4 is screwed with the screw hole 2071 from bottom to top, and the end of the fastening screw 4 penetrates through the mounting seat 207 and then abuts against the bottom wall of the water storage vessel 1, so that the capacitance type multi-stage water level sensing device 2 is fixedly mounted on the water storage vessel 1.
Second embodiment
Referring to fig. 5, the present embodiment is different from the first embodiment in that:
the capacitive sensing column 201 is at least partially exposed in the water body, and the exposed part extends from the lowest water level H1 to the highest water level H2.
Further, the whole capacitive sensing column 201 is exposed in the water, and in order to ensure the health of drinking water, the capacitive sensing column 201 is preferably made of stainless steel, silver and other materials harmless to the human body.
Other parts not described above are the same as those of the first embodiment, and are not explained in detail here.
Third embodiment
Referring to fig. 6, the present embodiment is different from the first embodiment in that:
the end part of the top end of the capacitance induction column 201, which extends to the highest water level H2, is exposed in the water body and is in contact with the water body, the rest part is covered with the insulating layer 202 so as not to be in contact with the water body, and the exposed part is made of materials harmless to the human body, such as stainless steel, silver materials and the like; when the water level height reaches or exceeds the highest water level H2, the top end of the capacitance induction column 201 directly contacts with the water body, the capacitance value changes violently, and the water level temperature monitoring circuit can immediately judge that the water level reaches the highest water level.
Further, insulating layer 202 is insulating cover, and electric capacity response post 201 top lateral wall is equipped with annular spacing boss 2011, and spacing boss 2011 bottom is contradicted with insulating cover top limit mutually, avoids insulating cover upwards to shift, and insulating cover bottom is contradicted with sealing member 203 limit mutually, avoids insulating cover to shift downwards.
Other parts not described above are the same as those of the first embodiment, and are not explained in detail here.
The foregoing is a preferred embodiment of the present invention, and the basic principles, principal features and advantages of the utility model are shown and described. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, and the utility model is intended to be protected by the following claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A capacitive multistage water level sensing device is characterized in that: the water level temperature monitoring device comprises a capacitance sensing column (201) generating a corresponding capacitance value according to the water level, a temperature sensor (205) used for monitoring the temperature, and a water level temperature monitoring circuit (206) identifying the water level and collecting temperature information according to the change of the capacitance value, wherein the capacitance sensing column (201) and the temperature sensor (205) are respectively in circuit connection with the water level temperature monitoring circuit (206); the capacitance sensing column (201) is at least partially located at a set lowest water level (H1) and at least partially located at a set highest water level (H2); the temperature sensor (205) is arranged on the capacitance induction column (201) in a built-in mode.
2. The capacitive multi-stage water level sensing device according to claim 1, wherein: the capacitive sensing column (201) is at least partially exposed in the water body, and the exposed part extends from the lowest water level (H1) to the highest water level (H2).
3. The capacitive multi-stage water level sensing device according to claim 1, wherein: the capacitor induction column structure further comprises an insulating layer (202) coated on the capacitor induction column (201), and the surface of the capacitor induction column (201) is isolated by the insulating layer (202) and is not in contact with a water body.
4. The capacitive multi-stage water level sensing device according to claim 1, wherein: the end part of the capacitance induction column (201) extending to the highest water level (H2) is exposed in the water body and is in contact with the water body, and the rest part is covered with the insulating layer (202) so as not to be in contact with the water body.
5. The capacitive multi-stage water level sensing device according to claim 3 or 4, wherein: the insulating layer (202) is a split insulating sleeve sleeved on the surface of the capacitance induction column (201) or an insulating coating coated on the surface of the capacitance induction column (201).
6. The capacitive multi-stage water level sensing device according to claim 5, wherein: the insulating sleeve is made of glass, crystal or ceramic material; the insulating coating is sprayed on the capacitance induction column (201) through an enamel process.
7. The capacitive multi-stage water level sensing device according to any one of claims 1 to 4, wherein: the capacitance induction column (201) is a hollow column, and the temperature sensor (205) is arranged at a certain height position in the inner cavity of the capacitance induction column (201).
8. The capacitive multi-stage water level sensing device according to any one of claims 1 to 4, wherein: the capacitance induction column (201) is made of stainless steel, copper material, silver material or titanium gold material.
9. An electric heating appliance comprises a water storage vessel (1) for storing water and a main control module; the method is characterized in that: further comprising a capacitive multi-stage water level sensing device (2) according to claim 1; the capacitance induction column (201) is arranged in the inner cavity of the water storage vessel (1) in a vertical or inclined mode; the water level temperature monitoring circuit (206) is in circuit connection with the main control module.
10. An electrically heated appliance as claimed in claim 9, wherein: the capacitive multi-stage water level sensing device (2) further comprises a mounting seat (207); the water level temperature monitoring circuit (206) is arranged on the mounting seat (207); one end of the capacitance induction column (201) penetrates through the mounting base (207) and then is connected with the water level temperature monitoring circuit (206) through a circuit; and a sealing element (203) is arranged between the capacitance induction column (201) and the water storage vessel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121641613.5U CN215809373U (en) | 2021-07-19 | 2021-07-19 | Capacitance type multi-section water level sensing device and electric heating appliance thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121641613.5U CN215809373U (en) | 2021-07-19 | 2021-07-19 | Capacitance type multi-section water level sensing device and electric heating appliance thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215809373U true CN215809373U (en) | 2022-02-11 |
Family
ID=80182870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121641613.5U Active CN215809373U (en) | 2021-07-19 | 2021-07-19 | Capacitance type multi-section water level sensing device and electric heating appliance thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215809373U (en) |
-
2021
- 2021-07-19 CN CN202121641613.5U patent/CN215809373U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206350661U (en) | Electric cooking pot and the foam detecting device for it | |
| CN215809373U (en) | Capacitance type multi-section water level sensing device and electric heating appliance thereof | |
| CN107884032A (en) | Electric cooking pot and the anti-spilled detection means for it | |
| CN212394638U (en) | Cooking utensil with combined detection device | |
| CN216932785U (en) | Waterproof temperature sensing probe and intelligent cooking pot with same | |
| CN206350669U (en) | Electric cooking pot and the anti-spilled detection means for it | |
| CN213516975U (en) | Device for detecting material of cookware and cookware | |
| CN211408689U (en) | Automatic water feeding cup | |
| CN211324365U (en) | Capacitive liquid level detection structure and electric kettle thereof | |
| CN216090072U (en) | Electric kettle capable of detecting water level on surface of kettle body | |
| CN217178918U (en) | General type water level temperature sensing device | |
| CN213345248U (en) | Steam sensor and cooking utensil | |
| CN218279315U (en) | Liquid heating container | |
| CN108309043B (en) | Electric cooker, anti-overflow display system and anti-overflow display method thereof | |
| CN206586832U (en) | A kind of pot cover and electrical heating kitchen tools | |
| CN2742390Y (en) | Detection probe of small home electric appliance product | |
| CN212281046U (en) | Cooking utensil with built-in detection device | |
| CN209863269U (en) | Cooking utensil | |
| US5345059A (en) | Temperature self-regulating, electrically-heated spoon | |
| CN217610573U (en) | Cooking utensil | |
| CN217137537U (en) | Anti-overflow intelligence health preserving kettle | |
| CN212996034U (en) | Kettle with capacitance water level detection device | |
| CN218683751U (en) | Ultrasonic water level sensing device of tea set container | |
| CN211270056U (en) | Electric kettle | |
| CN215064940U (en) | Water temperature measuring sensor suitable for ultrasonic detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |