CN209996027U - Water level detection circuit and cooking utensil - Google Patents
Water level detection circuit and cooking utensil Download PDFInfo
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- CN209996027U CN209996027U CN201822239752.XU CN201822239752U CN209996027U CN 209996027 U CN209996027 U CN 209996027U CN 201822239752 U CN201822239752 U CN 201822239752U CN 209996027 U CN209996027 U CN 209996027U
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Abstract
The utility model provides an kinds of water level detection circuit and cooking utensil, this water level detection circuit are used for detecting the water level of water tank, and it includes N detecting electrode, N detecting electrode follows the direction of depth of water tank is arranged in proper order, every detecting electrode is in the water level of water tank has capacitance value when being higher than or equal to detecting electrode self position the water level of water tank has the second capacitance value when being less than detecting electrode self position, wherein N is for being greater than 1 natural number, detection chip is used for detecting N detecting electrode's capacitance value, and according to N detecting electrode's capacitance value generates detecting signal, main control chip basis detecting signal confirms the water level of water tank includes according to the utility model discloses a water level detection circuit and cooking utensil can accurately detect the level of water level water tank to can detect in the water tank after the water volume is not enough in the water tank in time remind the user to add water in the water tank.
Description
Technical Field
The utility model relates to the technical field of household appliances, more specifically, the utility model relates to an kinds of water level detection circuit and cooking utensil.
Background
automatic cooking appliances appear in the market at present, the automatic cooking appliances are provided with water tank devices, a cooking cavity (namely an inner pot) of the automatic cooking appliances is connected with the water tank through a water pipe, a main control chip adds water from the water tank into the cooking cavity of the cooking appliances through a control water pump, automatic water adding is realized, a consumer does not need to add water into the cooking cavity any more, and therefore the automation degree of the cooking appliances is improved.
However, such automatic cooking appliances generally do not have a water level detection function, and thus the level (or number of water levels) of the water in the water tank is not known, that is, the amount of water in the water tank is not known. If the current water yield in the water tank is not enough to cook the cooking function selected by the consumer, and the main control chip of the automatic cooking appliance cannot know the conditions, the prompt message that the water yield in the water tank is not enough can not be sent to the consumer, so that the user experience is reduced.
Therefore, there is a need to provide kinds of water level detection circuit cooking appliances to at least partially solve the problems in the prior art.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides an kinds of water level detection circuit and cooking utensil, its grade that can accurate detection water tank water level to can in time send the prompt message and remind the user to add water in the water tank after detecting the water tank water yield is not enough.
The utility model discloses an aspect of provides kinds of water level detection circuit for detect the water level of water tank, include:
the N detection electrodes are sequentially arranged along the depth direction of the water tank, each detection electrode has a th capacitance value when the water level of the water tank is higher than or equal to the position of the detection electrode, and has a second capacitance value when the water level of the water tank is lower than the position of the detection electrode, wherein N is a natural number greater than 1;
the detection chip is used for detecting the capacitance values of the N detection electrodes and generating detection signals according to the capacitance values of the N detection electrodes;
and the main control chip determines the water level of the water tank according to the detection signal.
In the utility model discloses embodiment, N detection electrode sets up on the lateral surface of water tank.
In the utility model discloses embodiment, N detection electrode is upwards arranged along vertical direction from the bottom of the lateral surface of water tank in proper order the utility model discloses embodiment still includes:
the water level detection circuit board, N detection electrode with detect the chip setting and be in on the water level detection circuit board, wherein, N detection electrode sets up on faces with of water level detection circuit board.
The utility model discloses embodiment, the detection chip with N detection electrode sets up on the different faces of water level detection circuit board.
In the utility model discloses embodiment, the water level detection circuit board sets up along vertical direction on the lateral surface of water tank.
In the embodiment of the present invention at , the N detecting electrodes are conductive copper foils with N areas equal to each other.
In the embodiment of the present invention , the conductive copper foil is rectangular or square.
In the embodiment of the present invention, the distance between two adjacent detection electrodes of the N detection electrodes is equal.
The second aspect of the present invention also provides a cooking appliance, which includes a water tank for storing cooking water, and a water level detection circuit.
The utility model discloses embodiment, this cooking utensil still includes the suggestion unit, the suggestion unit is connected to main control chip, main control chip control the suggestion unit is to the user suggestion water yield information.
According to the utility model discloses a water level detection circuit and cooking utensil, owing to be provided with the edge a plurality of detecting electrode of N that the direction of depth of water tank was arranged in proper order, and every detecting electrode is in the water level of water tank has capacitance value when being higher than or equal to detecting electrode self position the water level of water tank has the second capacitance value when being less than detecting electrode self position because the electric capacity through detecting every detecting electrode can know the position that the water level is in which detecting electrode to water level in the accurate definite water tank, and then can in time remind the user to add water in the water tank when confirming water tank internal water volume is not enough.
Drawings
The following drawings, which are included to provide an understanding of the invention and are incorporated in and constitute a part of the specification , illustrate embodiments of the invention and together with the description serve to explain the principles and apparatus of the invention,
fig. 1 is a schematic structural view of a cooking appliance according to an embodiment of the present invention ;
fig. 2 is a schematic block diagram of a water level detection circuit according to an embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of the water level detecting circuit shown in FIG. 2;
FIG. 4A is a schematic view of an th side of a circuit board of the water level detecting circuit shown in FIG. 2;
FIG. 4B is a schematic diagram of a second side of the circuit board of the water level detecting circuit shown in FIG. 2; and
fig. 5 is a schematic view illustrating the installation of a circuit board of the water level detecting circuit shown in fig. 2 on a water tank.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention, however, it will be apparent to those skilled in the art that the present invention may be practiced without or more of these details.
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The following detailed description of the preferred embodiments of the invention, however, is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
The utility model provides kinds of cooking utensils, the cooking utensil can be electric rice cooker, electric pressure cooker or other electric heating utensil in addition, the cooking utensil can also have other functions such as cooking congee, a kind of deep pot hot water besides having the function of cooking rice.
Fig. 1 is a schematic structural view of a cooking appliance according to an embodiment of the present invention .
As shown in FIG. 1, a cooking appliance 100 includes a pot body 110. the pot body 110 may be generally rounded rectangular parallelepiped, generally cylindrical, or any other suitable shape.A cooking cavity 120 is formed in the pot body 110. by way of example, the cooking cavity 120 may be formed by an inner pot (not shown) disposed within the pot body 110 and a cover (not shown) disposed over the pot body 110. illustratively, the inner pot is generally cylindrical or any other suitable shape.A inner pot may be freely placed into or removed from the inner pot receptacle of the pot body 110 to facilitate cleaning of the inner pot.
The pot body 110 is further provided therein with a heating means for heating the cooking cavity/inner pot. The heating means may heat the cooking cavity/inner pot at the bottom and/or side of the cooking cavity/inner pot. The heating device may be an electrically heated tube or may be an induction heating device such as a solenoid coil. The cooker body 110 is further provided with a temperature measuring device for measuring the temperature of the cooking cavity/inner pot. The temperature measuring device can be various temperature sensors, and can measure the temperature of the cooking cavity/inner pot, so that the temperature can be conveniently controlled according to the temperature heating device of the cooking cavity/inner pot. Exemplarily, in this embodiment, the temperature measuring device is arranged at the bottom of the cooking cavity/inner pot. However, it should be understood that in other embodiments the temperature measuring device may be arranged at other locations, for example at the side of the cooking cavity/inner pot, or at both the bottom and the side of the cooking cavity/inner pot.
Referring again to fig. 1, the cooking appliance 100 further includes a water tank 130 disposed on the body 110, the water tank 130 being generally cylindrical or any other suitable shape, the water tank 130 being for storing cooking water, the water tank 130 being disposed at a rear end of the body 110 or any other suitable location, the water tank 130 being mounted and secured using a suitable electromechanical structure, the water tank 130 being in communication with the cooking cavity via a water inlet line 140, the water inlet line 140 having a water inlet in communication with the water tank 130 and a water outlet in communication with the cooking cavity 120, the water inlet line 140 being disposed in the body 110 or in the cover, or being partially disposed in the body 110 and being partially disposed in the cover, the water inlet being disposed in the body 110 and the water outlet being disposed in the cover or the body, as an example.
, a water pump is further arranged in the pot body 110, water can be automatically added into the cooking cavity 120 of the cooking appliance 100 from the water tank 130 by controlling the water pump, and the water is not required to be added into the cooking cavity by a consumer, so that the automation degree of the cooking appliance is improved.
Fig. 2 is a schematic block diagram of a water level detection circuit according to an embodiment of the present invention, fig. 3 is a circuit schematic diagram of the water level detection circuit shown in fig. 2, fig. 4A is a schematic diagram of a -th surface of a circuit board of the water level detection circuit shown in fig. 2, fig. 4B is a schematic diagram of a second surface of the circuit board of the water level detection circuit shown in fig. 2, and fig. 5 is a schematic diagram of the installation of the circuit board of the water level detection circuit shown in fig. 2 on a water tank.
The water level detection circuit provided by the present invention is described below with reference to fig. 2 to 5.
As shown in fig. 2 to 5, the water level detection circuit 200 includes a detection electrode 10, a detection chip 11 and a main control chip 12.
The number of the sensing electrodes 10 is N, the N sensing electrodes 10 are sequentially arranged along the depth direction of the water tank 130, each sensing electrode 10 has a th capacitance value when the water level of the water tank 130 is higher than or equal to the position of the sensing electrode 10 itself, and has a second capacitance value when the water level of the water tank 130 is lower than the position of the sensing electrode itself, wherein N is a natural number greater than 1. the sensing electrodes 10 can be made of various materials, illustratively, the sensing electrodes 10 are conductive copper foils in the present embodiment, the conductive copper foils are rectangular in shape, illustratively, in the present embodiment, the number of the sensing electrodes 10 is 8, that is, the water level sensing circuit includes 8 conductive copper foils, as shown in FIG. 4B, the 8 conductive copper foils are arranged on the same side of the circuit board 13, and are sequentially arranged in the vertical direction. illustratively, the 8 conductive copper foils are equal in area, so that each conductive copper foil is arranged on the outer side of the water tank 130 higher than or equal to the position of the conductive copper foil itself and the water level 32 when the water level is lower than the water level, and the water level is lower side of the water tank 130, thus the outer side of the water tank 130 is arranged in the same order that the outer side of the water tank 130, the conductive copper foils 130, the outer side of the water tank 130 is arranged in the vertical direction, and the outer side of the water tank 130 is arranged in the outer side of the water tank 130, the outer side of the water tank 130, the water tank 130 is arranged in the outer side of the water tank 130, and the outer side of the water tank 130 is arranged in the same level of the outer side of the water tank 130, thus the water tank 130, the outer side of the outer.
The detecting chip 11 is used for detecting the capacitance values of the N detecting electrodes 10 and generating detecting signals according to the capacitance values of the N detecting electrodes 10, as shown in fig. 3, the detecting chip 11 has N detecting ports respectively connected to detecting electrodes 10. exemplarily, in the present embodiment, the detecting chip 11 has 8 detecting ports respectively connected to 1 conductive copper foil, and grounding capacitors are further provided between each conductive common ratio and the detecting ports, in the present embodiment, the detecting chip 11 and the detecting electrodes 10 are disposed on different surfaces of the circuit board 13, for example, the detecting chip 11 and the interface 9 are disposed on the surface of the circuit board 13, the conductive copper foils 1-8 are disposed on the second surface of the circuit board 13, and the detecting chip 11 is connected with the main control chip 12 through the interface 9.
Since each of the sensing electrodes 10 has th capacitance value when the water level of the water tank 130 is higher than or equal to the position of the sensing electrode 10 itself, and has a second capacitance value when the water level of the water tank 130 is lower than the position of the sensing electrode 10 itself, since it can be known which sensing electrode the water level is at by sensing the capacitance of each sensing electrode 10, the water level in the water tank can be accurately determined, illustratively, for example, when the capacitance values of the conductive copper foils 1-4 are th capacitance values, and the capacitance values of the conductive copper foils 5-8 are the second capacitance values, the sensing chip 11 can know that the water level is at the position of the conductive copper foil 4 according to the sensing signal based on the generated sensing signal representing .
, the main control chip 12 can also determine the water volume of the water tank according to the water level of the water tank, and according to the ratio of the food material volume to the water volume and the respective weight, then calculate whether the current water volume in the water tank meets the cooking requirement, and if the water volume is not enough, remind the user to add water into the water tank in time.
According to the utility model discloses a water level detection circuit and cooking utensil, owing to be provided with the edge a plurality of detecting electrode of N that the direction of depth of water tank was arranged in proper order, and every detecting electrode is in the water level of water tank has capacitance value when being higher than or equal to detecting electrode self position the water level of water tank has the second capacitance value when being less than detecting electrode self position because the electric capacity through detecting every detecting electrode can know the position that the water level is in which detecting electrode to water level in the accurate definite water tank, and then can in time remind the user to add water in the water tank when confirming water tank internal water volume is not enough.
The terms such as "portion," "member," and the like, as used herein, may refer to either a single part or a combination of parts.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1, kinds of water level detection circuit for detect the water level of water tank, its characterized in that includes:
the N detection electrodes are sequentially arranged along the depth direction of the water tank, each detection electrode has a th capacitance value when the water level of the water tank is higher than or equal to the position of the detection electrode, and has a second capacitance value when the water level of the water tank is lower than the position of the detection electrode, wherein N is a natural number greater than 1;
the detection chip is used for detecting the capacitance values of the N detection electrodes and generating detection signals according to the capacitance values of the N detection electrodes;
and the main control chip determines the water level of the water tank according to the detection signal.
2. The water level detection circuit according to claim 1, wherein the N detection electrodes are disposed on an outer side surface of the water tank.
3. The water level detecting circuit according to claim 2, wherein the N detecting electrodes are sequentially arranged upward in a vertical direction from a bottom of an outer side surface of the water tank.
4. The water level detection circuit according to claim 1, further comprising:
the water level detection circuit board, N detection electrode with detect the chip setting and be in on the water level detection circuit board, wherein, N detection electrode sets up on faces with of water level detection circuit board.
5. The water level detection circuit according to claim 4, wherein the detection chip and the N detection electrodes are disposed on different surfaces of the water level detection circuit board.
6. The water level detection circuit according to claim 4, wherein the water level detection circuit board is disposed on an outer side surface of the water tank in a vertical direction.
7. The water level detecting circuit according to claim 1, wherein the N detecting electrodes are N conductive copper foils having an equal area.
8. The water level detecting circuit according to claim 1, wherein the distance between two adjacent detecting electrodes of the N detecting electrodes is equal.
Cooking appliance of the kind 9, , comprising a water tank for storing cooking water and the water level detection circuit of any of claims 1-8, .
10. The cooking appliance of claim 9, further comprising:
and the main control chip controls the prompting unit to prompt water volume information to a user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822239752.XU CN209996027U (en) | 2018-12-28 | 2018-12-28 | Water level detection circuit and cooking utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822239752.XU CN209996027U (en) | 2018-12-28 | 2018-12-28 | Water level detection circuit and cooking utensil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209996027U true CN209996027U (en) | 2020-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822239752.XU Active CN209996027U (en) | 2018-12-28 | 2018-12-28 | Water level detection circuit and cooking utensil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209996027U (en) |
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2018
- 2018-12-28 CN CN201822239752.XU patent/CN209996027U/en active Active
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