CN210990104U - Turbidity detection system for dish washing machine - Google Patents
Turbidity detection system for dish washing machine Download PDFInfo
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- CN210990104U CN210990104U CN201920992601.3U CN201920992601U CN210990104U CN 210990104 U CN210990104 U CN 210990104U CN 201920992601 U CN201920992601 U CN 201920992601U CN 210990104 U CN210990104 U CN 210990104U
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- turbidity
- assembly
- water
- turbidity detecting
- capacitance
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- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 238000004851 dishwashing Methods 0.000 title description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 239000008399 tap water Substances 0.000 description 8
- 235000020679 tap water Nutrition 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- BULVZWIRKLYCBC-UHFFFAOYSA-N phorate Chemical compound CCOP(=S)(OCC)SCSCC BULVZWIRKLYCBC-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a turbidity detecting system for dish washer, it includes into water subassembly, drainage subassembly, turbidity determine module and dish washer body, turbidity determine module is located the cavity bottom and both intercommunications of dish washer body, the subassembly that intakes is with running water drainage to turbidity determine module, drainage subassembly and turbidity determine module intercommunication are used for discharging water. The utility model discloses during the use, through the capacitance value of turbidity determine module detection running water different moments, calculate current turbidity according to the capacitance value of present moment and the ratio of initial moment capacitance value, avoided using the strict demand of turbidity sensor to the testing environment. The method has the advantages of low cost, simplicity, easy implementation, lower requirements on detection conditions and easy popularization.
Description
Technical Field
The utility model belongs to the technical field of dish washer, concretely relates to turbidity detecting system for dish washer.
Background
The turbidity sensor is a low-cost sensor for household appliances, is mainly used for measuring the water turbidity degree of products such as washing machines, dish washing machines and the like, and judges the cleanliness degree of the washed articles by measuring the water turbidity degree, thereby determining the optimal washing time and rinsing times.
However, the turbidity sensor has very strict standards for light source intensity and temperature, and the measurement accuracy of the sensor is affected by the variation of the light source intensity and temperature, especially when the turbidity sensor is applied to a dishwasher, the cleanness of dishes and further the health of a human body are affected by errors in measurement.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a turbidity detecting system for a dish-washing machine, which avoids the strict requirement of a turbidity sensor on the detection environment in the traditional method.
The technical proposal adopted by the utility model is that,
the utility model provides a turbidity detecting system for dish washer, its includes into water subassembly, drainage subassembly, turbidity detecting element and dish washer body, turbidity detecting element is located the cavity bottom and both intercommunications of dish washer body, the subassembly that intakes is with running water drainage to turbidity detecting element, drainage subassembly and turbidity detecting element intercommunication are used for discharging water.
Preferably, the turbidity detection assembly comprises a ground electrode, a turbidity electrode, a capacitance measurement chip and a reference capacitance, the ground electrode, the turbidity electrode and the reference capacitance are all connected with the capacitance measurement chip, and the ground electrode and the turbidity electrode are attached to the side wall of the dishwasher cavity.
Preferably, the turbidity detection assembly further comprises a water tank, the water tank is communicated with the dishwasher cavity and is positioned at the bottom of the dishwasher cavity, and the ground electrode and the turbidity electrode are attached to the outer side wall of the water tank.
Preferably, the turbidity detection assembly comprises a comparison module, a power supply module, a reference voltage module and an equivalent capacitance C of liquid in the cavityxnAnd a reference capacitance Cadj(ii) a The power module and the equivalent capacitor CxnAnd a reference capacitance CadjConnection ofThe reference voltage module and the equivalent capacitor CxnAnd a reference capacitance CadjAre all connected with a comparison module.
Preferably, the turbidity detecting assembly further comprises a frequency setting module, and the frequency setting module is connected with the power supply module.
Preferably, the turbidity detecting system further comprises a controller, the controller is respectively connected with the water inlet assembly, the water discharge assembly and the turbidity detecting assembly, and the controller is used for controlling the washing times of the dishwasher according to the detection result of the turbidity detecting assembly.
Preferably, the drain assembly is located at the lowest point of the turbidity detecting assembly.
Preferably, the water inlet assembly comprises a water inlet pipe and a water inlet solenoid valve, and the water inlet solenoid valve is arranged on the water inlet pipe.
Preferably, the drain assembly includes a drain pipe and a drain pump, the drain pump being provided on the drain pipe.
Preferably, the capacitance measuring chip is an SOP8 packaged chip.
Compared with the prior art, the utility model discloses during the use, detect the capacitance value of the different moments of running water through turbidity determine module, calculate current turbidity according to the capacitance value, avoided using the strict requirement of turbidity sensor to the testing environment. The device has low cost, is simple and easy to implement, has low requirements on detection conditions, and is easy to popularize.
Drawings
FIG. 1 is a schematic diagram of a turbidity detecting system for a dishwasher according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a turbidity detecting assembly in a turbidity detecting system for a dishwasher according to an embodiment of the present invention;
FIG. 3 is a capacitance equivalent diagram of a ground electrode and a turbidity electrode of a turbidity detecting assembly in a turbidity detecting system for a dishwasher according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another structure of a turbidity detecting assembly in a turbidity detecting system for a dishwasher according to an embodiment of the present invention;
FIG. 5 is a circuit diagram of an SOP8 package in a turbidity detection system for a dishwasher according to an embodiment of the present invention;
fig. 6 is a flow chart illustrating operation of a turbidity detecting system for a dishwasher according to an embodiment of the present invention.
The reference numbers are as follows:
1. the dishwasher comprises a water inlet assembly, a water discharge assembly, a turbidity detection assembly, a dishwasher body, a water inlet pipe, a water inlet electromagnetic valve, a drain pipe, a drain pump, a ground electrode, a turbidity electrode, a capacitance measuring chip, a reference capacitance, a water tank, a comparison module, a power supply module, a frequency setting module and a reference voltage module, wherein the water inlet electromagnetic valve is 12, the drain pipe is 21, the drain pump is 22, the ground electrode is 31, the turbidity electrode is 32, the capacitance measuring chip is 33, the reference capacitance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below 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 a turbidity detecting system for dish washer, as in fig. 1, it includes into water subassembly 1, drainage subassembly 2, turbidity detecting element 3 and dish washer body 4, wherein:
the turbidity detection assembly 3 is positioned at the bottom of a cavity of the dishwasher body 4 and is communicated with the cavity, the water inlet assembly 1 drains tap water to the turbidity detection assembly 3, and the water discharge assembly 2 is communicated with the turbidity detection assembly 3 and is used for discharging water;
thus, by adopting the structure, tap water firstly flows into the dishwasher body 4 through the water inlet component 1, and the turbidity detection component 3 detects the initial capacitance value c of the current tap water0Then starting the washing function of the dish washing machine; turbidity detection component 3 detects current electric capacity c of running water in dish washer body 4 in real timet(ii) a Current capacitance ctAnd an initial capacitance c0The ratio of (A) to (B) is the current turbidity value.
In the present embodiment, as shown in fig. 2, the turbidity detecting assembly 3 includes a ground electrode 31, a turbidity electrode 32, a capacitance measuring chip 33, a reference capacitor 34 and a water tank 35, wherein the ground electrode 31, the turbidity electrode 32 and the reference capacitor 34 are all connected to the capacitance measuring chip 33, and the ground electrode 31 and the turbidity electrode 32 are inserted into the water tank 35;
as shown in fig. 3, the ground electrode 31 and the turbidity electrode 32 are equivalent to two plates of a capacitor, and a reference capacitor 34 and a capacitance measuring chip 33 are added to form a measuring circuit functionally equivalent to the capacitor.
The ratio of the capacitance at the current moment to the capacitance at the initial moment is the current turbidity.
In another embodiment, as shown in fig. 4, the turbidity detecting assembly 3 adopts another structure, and specifically includes a comparing module 36, a power module 37, a frequency setting module 38, a reference voltage module 39, and an equivalent capacitance C of the liquid in the cavityxnAnd a reference capacitance Cadj(ii) a The power module 37 and the equivalent capacitor CxnReference capacitor CadjConnected with a frequency setting module 38, the reference voltage module 39 and the equivalent capacitor CxnAnd a reference capacitance CadjAre all connected with a comparison module 36;
the specific method for detecting the capacitance by the turbidity detection assembly 3 comprises the following steps:
the formula Q ═ C × U and Q ═ I × t can be calculated from the formula charge amount:
in the above formula, Q is the charge amount, C is the capacitance, U is the reference voltage, I is the current, t is the time required for charging;
in the calculation formula of the capacitor C, the magnitude of the current I is determined by the single charging duration set by the power module 37 and the frequency setting module 38, and the reference voltage U is the voltage set by the reference voltage module 39, so that the current I and the reference voltage U are both fixed values; the size of the capacitor C depends mainly on the time required for charging.
The turbidity was calculated as: the ratio of the capacitance value at the current moment to the capacitance value at the initial moment;
in bookIn the embodiment, the reference capacitor CadjIt is known that, under the condition of a fixed charging voltage value, the capacitance value is proportional to time, i.e. the capacitance value is large, when the same voltage value is charged, the required charging time is correspondingly long, and in the reference capacitor CadjAccording to the reference capacitance C in a known manneradjAnd equivalent capacitance CxnThe charging time can obtain the equivalent capacitance CxnThereby enabling the measurement of the capacitance value.
The charging required time t is specifically as follows: the power supply module 37 outputs the equivalent capacitance C according to the frequency set by the frequency setting module 38xnAnd a reference capacitance CadjCharging is carried out, and the reference capacitor C is charged along with the chargingadjWill gradually rise, and after rising to the inverse voltage set by the comparison module 36, the comparison module 36 will output the time for the process, i.e. the charging time period t.
As shown in fig. 5, the capacitance measuring chip 33 is preferably a chip packaged by SOP8, but is not limited to SOP 8.
The turbidity detection system further comprises a controller, the controller is respectively connected with the water inlet component 1, the water discharge component 2 and the turbidity detection component 3, and the controller is used for controlling the washing times of the dish washing machine according to the detection result of the turbidity detection component 3;
specifically, the controller compares the current turbidity with a preset turbidity threshold, if the current turbidity is larger than the preset turbidity threshold, the water drainage assembly 2 drains off the water, and then clean tap water is introduced through the water inlet assembly 1 to continuously clean the water; when the current turbidity is smaller than or equal to a preset turbidity threshold value, the dishes in the dish washing machine are proved to be cleaned, and the washing function of the dish washing machine is closed; by reasonably arranging the cleaning times and time in this way, the washing effect is ensured, and water and electricity are saved.
The water inlet assembly 1 comprises a water inlet pipe 11 and a water inlet electromagnetic valve 12, and the water inlet electromagnetic valve 12 is arranged on the water inlet pipe 11;
thus, the controller controls the communication between the water inlet pipe 11 and the dishwasher body 4 through the water inlet solenoid valve 12.
The drain assembly 2 includes a drain pipe 21 and a drain pump 22, the drain pump 22 being provided on the drain pipe 21;
in this way, the controller performs a drain function by the drain pump 22.
In order to ensure that no liquid remains in the dishwasher chamber, the drain assembly 2 is disposed below the turbidity detecting assembly 3.
The working process of this embodiment is shown in fig. 6, and specifically includes:
s1, running water flows into the cavity of the dishwasher through the water inlet component 1;
the water inlet component 1 comprises a water inlet pipe 11 and a water inlet electromagnetic valve 12, the water inlet electromagnetic valve 12 is arranged on the water inlet pipe 11, the water inlet pipe 11 is communicated with the cavity of the dish-washing machine, and when the water inlet component is used, the water inlet electromagnetic valve 12 is used for controlling the on-off of the water inlet pipe 11 and the cavity of the dish-washing machine;
s2, the turbidity detection component 3 detects the initial capacitance c of the tap water in the cavity of the dishwasher0(ii) a Wherein, the turbidity detecting component 3 is communicated with the cavity of the dishwasher;
s3, starting the washing function of the dishwasher; after tap water is injected into the cavity of the dish washing machine and the capacitance of the tap water is detected, the washing function of the dish washing machine can be started;
s4, the turbidity detection component 3 detects the current capacitance c of the tap water in the cavity of the dish washer in real timet；
S5, calculating the current capacitance value ctAnd an initial capacitance value c0The ratio of (a) to (b) is the current turbidity;
and S6, comparing the current turbidity value with a preset turbidity threshold value, draining water by the drainage assembly, and continuously washing the water inlet of the water inlet assembly after the drainage is finished until the current turbidity value is less than or equal to the preset turbidity threshold value, and finishing the washing of the dishwasher.
Compared with the traditional turbidity sensor, the turbidity detection component 3 has lower measurement condition, can prevent the dishwasher from dry cleaning under the condition of no water, and can generate jump of dozens of times or even hundreds of times of capacitance detected by the turbidity detection component 3 when the dishwasher breaks down or water is not added; therefore, when the capacitor jumps, the user should check whether water is in the dishwasher in time.
This embodiment has realized using the great water of turbidity to wash the bowl dish through setting up turbidity detection subassembly in dishwasher body below, has avoided using turbidity real-time detection, has also avoided the bowl dish to have just continued the wasting of resources that the washing caused by the well dish.
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 should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a turbidity detecting system for dish washer, its characterized in that, it includes into water subassembly (1), drainage subassembly (2), turbidity detecting element (3) and dish washer body (4), turbidity detecting element (3) are located the cavity bottom and both intercommunications of dish washer body (4), water subassembly (1) drains running water to turbidity detecting element (3), drainage subassembly (2) and turbidity detecting element (3) intercommunication are used for discharging water.
2. A turbidity detecting system for a dishwasher according to claim 1, wherein said turbidity detecting assembly (3) comprises a ground electrode (31), a turbidity electrode (32), a capacitance measuring chip (33) and a reference capacitance (34), said ground electrode (31), turbidity electrode (32) and reference capacitance (34) are all connected with the capacitance measuring chip (33), and said ground electrode (31) and turbidity electrode (32) are attached to the side wall of the dishwasher cavity.
3. A turbidity detecting system for a dishwasher according to claim 2, wherein said turbidity detecting assembly (3) further comprises a water tank (35), said water tank (35) being in communication with and located at the bottom of the dishwasher cavity, said ground electrode (31) and turbidity electrode (32) being affixed on the outer side wall of the water tank (35).
4. Turbidity detection system for a dishwasher according to claim 1, characterized in that said turbidity detection assembly (3) comprises a comparison module (36), a power supply module (37), a reference voltage module (39), an equivalent capacitance C of the liquid in the cavityxnAnd a reference capacitance Cadj(ii) a The power module (37) and the equivalent capacitor CxnAnd a reference capacitance CadjConnected, the reference voltage module (39), the equivalent capacitance CxnAnd a reference capacitance CadjAre connected with a comparison module (36).
5. A turbidity detecting system for a dishwasher according to claim 4, wherein said turbidity detecting assembly (3) comprises a further frequency setting module (38), said frequency setting module (38) being connected with said power supply module (37).
6. A turbidity detecting system for a dishwasher according to any of claims 3-5, further comprising a controller connected to the water inlet assembly (1), the water outlet assembly (2) and the turbidity detecting assembly (3), respectively, for controlling the number of washing operations of the dishwasher according to the result of the turbidity detecting assembly (3).
7. A turbidity detecting system for a dishwasher according to claim 6, wherein said drain assembly (2) is located at the lowest point of said turbidity detecting assembly (3).
8. A turbidity detecting system for a dishwasher according to claim 1, wherein said water inlet assembly (1) comprises a water inlet pipe (11) and a water inlet solenoid valve (12), the water inlet solenoid valve (12) being arranged on the water inlet pipe (11).
9. A turbidity detecting system for a dishwasher according to claim 1, wherein said drain assembly (2) comprises a drain pipe (21) and a drain pump (22), the drain pump (22) being provided on the drain pipe (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920992601.3U CN210990104U (en) | 2019-06-28 | 2019-06-28 | Turbidity detection system for dish washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920992601.3U CN210990104U (en) | 2019-06-28 | 2019-06-28 | Turbidity detection system for dish washing machine |
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| Publication Number | Publication Date |
|---|---|
| CN210990104U true CN210990104U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920992601.3U Expired - Fee Related CN210990104U (en) | 2019-06-28 | 2019-06-28 | Turbidity detection system for dish washing machine |
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| Country | Link |
|---|---|
| CN (1) | CN210990104U (en) |
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- 2019-06-28 CN CN201920992601.3U patent/CN210990104U/en not_active Expired - Fee Related
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Granted publication date: 20200714 |