CN211741072U - Evaporator scale detection device - Google Patents
Evaporator scale detection device Download PDFInfo
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- CN211741072U CN211741072U CN201922147117.3U CN201922147117U CN211741072U CN 211741072 U CN211741072 U CN 211741072U CN 201922147117 U CN201922147117 U CN 201922147117U CN 211741072 U CN211741072 U CN 211741072U
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- visible light
- photoresistor
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- evaporator
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- 238000001514 detection method Methods 0.000 title claims abstract description 61
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 24
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model discloses an evaporimeter incrustation scale detection device, including visible light source unit, visible light photoresistor and detection control unit, visible light source unit and visible light photoresistor are installed in the evaporimeter bottom, and detection control unit is connected with visible light photoresistor electricity, and visible light photoresistor is used for receiving visible light source unit and sends light, and detection control unit converts visible light photoresistor's analog signal to digital signal, obtains the analog-to-digital conversion value that is used for detecting incrustation scale content. The visible light photoresistor receives light rays emitted into water by the visible light source unit, then the detection control unit performs analog-to-digital conversion, analog signals are converted into digital signals, an analog-to-digital conversion value is obtained, and whether the content of scale in the evaporator exceeds the standard or not is judged according to the analog-to-digital conversion value.
Description
Technical Field
The utility model belongs to the technical field of electric steamer, concretely relates to evaporimeter incrustation scale detection device.
Background
At the domestic appliance of taking the evaporimeter such as electric steamer, roast all-in-one of steaming and baking in long-term use, need heat water, the user generally adopts the running water, because the running water contains the mineral substance, after the live time is long, incrustation scale is gathered easily to inside steam generator inner wall, and then influences heating efficiency, and the energy consumption also correspondingly improves, still can lead to the water route to block up and influence the normal use of product even. It is common practice today to prompt the user to clean after a set time of use. However, if the water quality difference in different areas is large, the time difference for forming the same-quality scale is also large, and the scale removal is prompted only by setting time, so that the situation of excessive scale can occur in the areas with large water quality. In areas with good water quality, the scale remover is wasted due to too small amount of scale, and the scale information cannot be accurately prompted. The scheme of weighing and calculating the weight of the scale is too high in cost and complex in structure.
Disclosure of Invention
In order to overcome the defects existing in the prior art, the main object of the utility model is to provide an evaporator scale detection device, which can effectively detect and control the scale content in an evaporator.
In order to achieve the above object, the present invention firstly provides an evaporator scale detection apparatus, which includes a visible light source unit, a visible light photoresistor and a detection control unit, wherein the visible light source unit and the visible light photoresistor are installed at the bottom of the evaporator, the detection control unit is electrically connected with the visible light photoresistor, the visible light photoresistor is used for receiving light emitted by the visible light source unit, and the detection control unit converts an analog signal of the visible light photoresistor into a digital signal to obtain an analog-to-digital conversion value for detecting the scale content.
Further, the visible light source unit and the visible light photoresistor are installed at the same side or opposite sides of the bottom of the evaporator.
Further, the visible light source unit is an LED lamp.
Further, the visible light photoresistor is replaced by a visible light photodiode or a visible light phototriode.
Furthermore, the device also comprises a storage unit used for storing the analog-to-digital conversion value, and the storage unit is electrically connected with the detection control unit.
Furthermore, the device also comprises a display reminding unit which is electrically connected with the detection control unit.
Compared with the prior art, the invention utilizes the illumination characteristic of the visible light photoresistor and combines the relative change of the signal amplitude output to the detection control unit, thereby establishing the turbidity degree, namely the relation between the scale content and the level amplitude. The visible light photoresistor receives light emitted by the visible light source unit into water, then the detection control unit performs analog-to-digital conversion, an analog signal is converted into a digital signal to obtain an analog-to-digital conversion value, and whether the content of scale in the evaporator exceeds the standard or not is judged according to the analog-to-digital conversion value.
Drawings
Fig. 1 is a first schematic structural diagram of an evaporator scale detection device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a scale detection device of an evaporator according to an embodiment of the present invention;
fig. 3 is a circuit diagram of an evaporator scale detection device according to an embodiment 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 will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the utility model provides an evaporimeter incrustation scale detection device, as shown in fig. 1, including visible light source unit 1, visible light photoresistor 2 and detection the control unit (not shown), visible light source unit 1 and visible light photoresistor 2 are installed in evaporimeter 3 bottoms, the detection control unit is connected with visible light photoresistor 2 electricity, visible light photoresistor 2 is used for receiving visible light source unit 1 and sends light, the analog signal conversion that detection the control unit will be visible light photoresistor 2 becomes digital signal, obtain the analog-to-digital conversion value that is used for detecting incrustation scale content.
By adopting the structure, the visible light photosensitive resistor 2 receives the light emitted into the water by the visible light source unit 1, then the detection control unit carries out analog-to-digital conversion, converts an analog signal into a digital signal to obtain an analog-to-digital conversion value, and compares the analog-to-digital conversion value with the detection standard threshold, if the analog-to-digital conversion value is smaller than the detection standard threshold, the evaporator scale content is judged to be overproof, otherwise, the evaporator scale content is not overproof. The detection criteria threshold is determined and set based on the specific evaporator internal environment and experimental data.
As shown in fig. 1, the visible light source unit 1 and the visible light photoresistor 2 are installed on the opposite sides of the bottom of the evaporator, as shown in fig. 2, or may be installed on the same side. Because light can scatter in water, so visible light source unit 1 and visible light photoresistor 2 homonymy installation or contralateral installation, visible light photoresistor 2 can all fully receive the light that visible light source unit 1 distributes to aquatic, according to the mounted position of difference, sets up corresponding detection standard threshold value. Therefore, the installation position of the scale detection device of the embodiment is more flexible, and the scale detection device can be adapted to a proper installation position according to different evaporator structures.
The visible light source unit 1 is an LED lamp, the visible light source unit is durable and low in energy consumption, the stronger the light received by the visible light photosensitive resistor 2 is, the smaller the self resistance is, the larger the level amplitude is, the stronger the signal received by the detection control unit is, the higher the sensitivity of the visible light photosensitive resistor 2 to illumination is, the response can be generated to slight difference of light intensity, and the detection precision can be improved by adopting the visible light photosensitive resistor 2 as an induction device. The visible light photoresistor 2 is replaced by a visible light photodiode or a visible light phototriac in the embodiment, and the same technical effect can be produced.
The device also comprises a storage unit (not shown) which is electrically connected with the detection control unit and used for storing the analog-to-digital conversion value converted by the detection control unit.
Still remind the unit (not shown in the figure) including showing, be connected with the detection control unit electricity, show in this embodiment and remind the unit for the display screen, on detection control unit conveys the display screen with the incrustation scale testing result, the user can in time observe the result, when the incrustation scale exceeds standard, then the suggestion needs carry out the incrustation scale clearance.
As shown in fig. 3, in the first embodiment, the detection control unit drives the electrode tube Q3 at a high level to make the electrode tube Q3 saturated and conductive, so that the LED lamp is turned on, the visible light photosensitive resistor 2 is a resistor R45 to receive light from the LED lamp, the resistor R18 and the resistor R45 form a voltage division sampling circuit, and form a filter circuit by a resistor R41 and a capacitor C19 to generate a sampling signal, and the detection control unit converts the sampling signal into a digital signal through analog-to-digital conversion. The power supply voltage of the circuit is 5V, and the model of the electrode tube Q3 is SS 8050.
The embodiment of the utility model provides a detection method of evaporimeter incrustation scale detection device, including following step:
s1, the visible light photosensitive resistor 2 receives the light emitted by the visible light source unit 1 into the water, then the detection control unit performs analog-to-digital conversion, and converts the analog signal into a digital signal to obtain an analog-to-digital conversion value Vn;
and S2, comparing the analog conversion value Vn with the detection standard threshold value Vs by the detection control unit, wherein if Vn is smaller than Vs, the scale content exceeds the standard, otherwise, the scale content does not exceed the standard.
When the water in the evaporator is boiled, the deposited scale is generated at the bottom of the evaporator, when the thickness of the scale reaches a certain degree, the scale can fall off from the bottom under the action of boiling bubbles, and micro scale floating objects are formed in the water, so that the water becomes turbid and is partially attached to the inner wall of the evaporator. The more turbid the water is, the more scales are represented, meanwhile, the more scales are finally attached to the inner wall of the evaporator, the more light is attenuated in the water, and the weaker the light is received by the visible light photoresistor 2.
The visible light photoresistor 2 is replaced by a visible light photodiode or a visible light phototriac in the embodiment, and the same technical effect can be produced.
In step S1, the heating is stopped after the water is boiled for a certain period of time, and the visible light source unit 1 emits light into the water. When the water is boiled, the water scale can be mixed in the water to enable the water to become turbid, and therefore the detection of the content of the water scale is facilitated.
In step S2, the method further includes recording and storing an analog-to-digital conversion value Vn each time, if Vn is smaller than Vs continuously for a number of times m reaching a predetermined value, the method reminds to clean the scale, a value range of m is 3-10, in this embodiment, the value of m is preferably 5, when Vn is smaller than Vs continuously for 5 times, it is determined that the scale content in the evaporator exceeds the standard, and timely cleaning is required, so that the method can avoid accidental detection in a single detection, which results in an inaccurate detection result, and meanwhile, damage to the evaporator due to frequent scale cleaning can be reduced, and the service life of the evaporator can be prolonged. The detection standard threshold value Vs is specifically determined and set according to different evaporators and experimental data, so that the detection standard threshold value Vs is targeted and more reasonable.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. An evaporator scale detection device comprises a visible light source unit, a visible light photoresistor and a detection control unit, wherein the visible light source unit and the visible light photoresistor are installed at the bottom of an evaporator, the detection control unit is electrically connected with the visible light photoresistor, the visible light photoresistor is used for receiving light emitted by the visible light source unit, and the detection control unit converts an analog signal of the visible light photoresistor into a digital signal to obtain an analog-to-digital conversion value for detecting scale content.
2. The evaporator scale detection apparatus of claim 1, wherein said visible light source unit and said visible light photoresistor are mounted on the same side or opposite sides of the bottom of said evaporator.
3. The evaporator scale detection apparatus according to claim 1, wherein the visible light source unit is an LED lamp.
4. The evaporator scale detection apparatus of claim 1, wherein said visible light photoresistor is replaced with a visible light photodiode or a visible light phototriode.
5. The evaporator scale detection apparatus according to claim 1, further comprising a storage unit for storing said analog-to-digital conversion value, said storage unit being electrically connected to said detection control unit.
6. The evaporator scale detection apparatus according to any one of claims 1 to 5, further comprising a display reminding unit electrically connected to the detection control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922147117.3U CN211741072U (en) | 2019-12-04 | 2019-12-04 | Evaporator scale detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922147117.3U CN211741072U (en) | 2019-12-04 | 2019-12-04 | Evaporator scale detection device |
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| CN211741072U true CN211741072U (en) | 2020-10-23 |
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| CN201922147117.3U Active CN211741072U (en) | 2019-12-04 | 2019-12-04 | Evaporator scale detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967317A (en) * | 2019-12-04 | 2020-04-07 | 华帝股份有限公司 | Evaporator scale detection device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967317A (en) * | 2019-12-04 | 2020-04-07 | 华帝股份有限公司 | Evaporator scale detection device and method |
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