CN206784020U - Washing machine and the detergent liquid level detection device for washing machine - Google Patents
Washing machine and the detergent liquid level detection device for washing machine Download PDFInfo
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- CN206784020U CN206784020U CN201720285542.7U CN201720285542U CN206784020U CN 206784020 U CN206784020 U CN 206784020U CN 201720285542 U CN201720285542 U CN 201720285542U CN 206784020 U CN206784020 U CN 206784020U
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Abstract
A kind of detergent liquid level detection device the utility model discloses washing machine and for washing machine, wherein, detergent liquid level detection device includes：Photoelectric coupling sensor, the detergent the storage box that photoelectric coupling sensor corresponds to washing machine is set, photoelectric coupling sensor includes light emitting diode and light-receiving triode, and the light intensity magnitude that photoelectric coupling sensor receives according to light-receiving triode generates corresponding detection signal；Liquid level detection unit, liquid level detection unit are connected with photoelectric coupling sensor, and liquid level detection unit is used to judge the detergent liquid level in detergent the storage box according to detection signal.Photoelectric yield of the device using photoelectric coupling sensor in detergent and in air is than different characteristics, detergent liquid level can accurately and reliably be detected, avoid occurring because detergent wall built-up or local assembly hardening cause the inaccurate phenomenon of the detergent liquid level of detection, and cost is relatively low.
Description
Technical field
Washing machine technology field is the utility model is related to, more particularly to a kind of detergent level sensing for washing machine fills
Put and a kind of washing machine.
Background technology
For launching the washing machine of function automatically with detergent, it is necessary to be detected to detergent liquid level.
In correlation technique, detergent level sensing, i.e. switch mode or probe side are typically carried out by two ways
Formula.Wherein, switch mode is by setting a pillar in detergent the storage box, and switch being enclosed on into pillar
On, switch can fluctuate with the change of liquid level.Meanwhile tongue tube is set in switch, and in detergent
Magnet is set at the specific level of the storage box, when switch with liquid level change and when moving up and down, in switch close to magnetic
During iron, tongue tube can be closed, to export corresponding liquid level signal, thus detect the liquid level of detergent.However, due to washing
Agent detects detergent liquid level it is possible that phenomenon of the switch wall built-up on pillar by this way than denser, so as to
Cause switch not moved up and down with the change of liquid level, and then cause the detergent liquid level of detection inaccurate.
Probe mode be by detergent set two metal probes, controller be passed through+12V voltages to one of them
In metal probe, when two metal probes are all submerged in detergent, due to the electric conductivity of detergent, another metal can be made
Probe generation+12V voltage, detergent liquid level can be judged by the voltage for detecting another metal probe.However, the party
Formula not only needs controller to provide the+12V voltages of isolation, and cost is higher, and needs using detergent as conductive carrier, if
Detergent long-term existence does not use in the storage box, and detergent is it is possible that local assemble hardening, so as to cause detection
Detergent liquid level differs larger with actual liquid level.
To sum up, above two detergent level sensing mode is all likely to occur the phenomenon of liquid level erroneous judgement.Therefore, how to provide
A kind of reliable detergent liquid level detection device, turns into those skilled in the art's urgent problem to be solved.
Utility model content
The utility model is intended to one of technical problem at least solving in correlation technique to a certain extent.
Therefore, a purpose of the present utility model is to propose a kind of detergent liquid level detection device for washing machine,
Photoelectric yield of the device using photoelectric coupling sensor in detergent and in air than different characteristics, can accurately, can
Detergent liquid level is detected by ground, avoids occurring due to detergent wall built-up or the local detergent liquid assembled hardening and cause detection
The inaccurate phenomenon in position, and cost is relatively low.
Another purpose of the present utility model is to propose a kind of washing machine.
To reach above-mentioned purpose, the utility model first aspect proposes a kind of detergent level sensing for washing machine
Device, including：Photoelectric coupling sensor, the detergent the storage box that the photoelectric coupling sensor corresponds to the washing machine are set,
The photoelectric coupling sensor includes light emitting diode and light-receiving triode, and the photoelectric coupling sensor connects according to the light
Receive the light intensity magnitude that triode receives and generate corresponding detection signal；Liquid level detection unit, the liquid level detection unit and institute
State photoelectric coupling sensor to be connected, the liquid level detection unit is used to judge the detergent the storage box according to the detection signal
Interior detergent liquid level.
According to the detergent liquid level detection device of the present utility model for washing machine, by being arranged on detergent the storage box
In the light intensity magnitude that is received according to light-receiving triode of photoelectric coupling sensor generate corresponding detection signal, then pass through liquid
Position detection unit judges the detergent liquid level in detergent the storage box according to detection signal.Thus, the device utilizes photoelectric coupling
Photoelectric yield of the sensor in detergent and in air can accurately and reliably detect detergent liquid than different characteristics
Position, avoid occurring because detergent wall built-up or local assembly hardening cause the inaccurate phenomenon of the detergent liquid level of detection, and
Cost is relatively low.
In addition, can also be had according to the utility model detergent liquid level detection device for washing machine set forth above
Following additional technical feature：
Specifically, the anode of the light emitting diode is connected to default after being connected with the colelctor electrode of the light-receiving triode
Power supply, the triggering end of the negative electrode of the light emitting diode as the photoelectric coupling sensor, the hair of the light-receiving triode
Output end of the emitter-base bandgap grading as the photoelectric coupling sensor.
Specifically, the liquid level detection unit includes triggers circuit, signaling conversion circuit and microcontroller, the triggering electricity
Road is connected with the negative electrode of the light emitting diode, and the triggers circuit sends trigger signal extremely under the control of the microcontroller
The light emitting diode, so that the light emitting diode is operated, the signaling conversion circuit is connected to the light-receiving three
Between the emitter stage of pole pipe and the microcontroller, the detection signal is converted to the microcontroller by the signaling conversion circuit
The recognizable voltage signal of device.
Further, the triggers circuit includes：First resistor, one end of the first resistor and the microcontroller phase
Even；First triode, the base stage of first triode are connected with the other end of the first resistor, first triode
Grounded emitter；Second resistance, one end of the second resistance are connected with the colelctor electrode of first triode, second electricity
The other end of resistance is connected with the negative electrode of the light emitting diode；3rd resistor, the 3rd resistor are connected to the one or three pole
Between the base stage and emitter stage of pipe.
Specifically, the signaling conversion circuit includes：First diode and the second diode, the sun of first diode
Pole is connected with the negative electrode of second diode and has first node, the negative electrode of first diode and a default power supply phase
Even, the plus earth of second diode, the first node is connected with the microcontroller；First electric capacity, described first
Electric capacity and second diodes in parallel；4th resistance, one end of the 4th resistance are connected with the first node, and described
The other end of four resistance is connected with the emitter stage of the light-receiving triode；5th resistance, one end of the 5th resistance and institute
The other end for stating the 4th resistance is connected, and the other end of the 5th resistance is grounded after being connected with the negative electrode of second diode.
To reach above-mentioned purpose, on the other hand the utility model proposes a kind of washing machine, and it includes above-mentioned for washing
The detergent liquid level detection device of clothing machine.
According to washing machine of the present utility model, pass through the photoelectric coupling sensor root of above-mentioned detergent liquid level detection device
The light intensity magnitude received according to light-receiving triode generates corresponding detection signal, then is believed by liquid level detection unit according to detection
Number judge the detergent liquid level in detergent the storage box.Thus, the washing machine using photoelectric coupling sensor in detergent and
Photoelectric yield in air can accurately and reliably detect detergent liquid level, avoid occurring due to washing than different characteristics
Agent wall built-up or the local phenomenon assembled hardening and cause the detergent liquid level inaccuracy of detection, and cost is relatively low.
Brief description of the drawings
The above-mentioned and/or additional aspect of the utility model and advantage from the following description of the accompanying drawings of embodiments will
Become obvious and be readily appreciated that, wherein,
Fig. 1 is shown according to the square frame of the detergent liquid level detection device for washing machine of the utility model one embodiment
It is intended to；
Fig. 2 is the external structure schematic diagram according to the photoelectric coupling sensor of the utility model one embodiment；
Fig. 3 be according to the photoelectric coupling sensor of the utility model one embodiment in detergent the storage box set location
Schematic diagram；And
Fig. 4 is the circuit diagram according to the liquid level detection unit of the utility model one embodiment.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
Below with reference to the accompanying drawings filled to describe the detergent level sensing for washing machine of the utility model embodiment proposition
Put and washing machine.
Fig. 1 is shown according to the square frame of the detergent liquid level detection device for washing machine of the utility model one embodiment
It is intended to.As shown in figure 1, detergent liquid level detection device includes：Photoelectric coupling sensor 10 and liquid level detection unit 20.
Wherein, the detergent the storage box of the corresponding washing machine of photoelectric coupling sensor 10 is set, and photoelectric coupling sensor 10 wraps
Light emitting diode D and light-receiving triode Q are included, the light intensity that photoelectric coupling sensor 10 receives according to light-receiving triode Q is big
The small corresponding detection signal of generation.Liquid level detection unit 20 is connected with photoelectric coupling sensor 10, and liquid level detection unit 20 is used for
The detergent liquid level in detergent the storage box is judged according to detection signal.
Further, in embodiment of the present utility model, as shown in figure 1, light emitting diode D anode and light-receiving three
Pole pipe Q colelctor electrode is connected to default power supply VCC after being connected, and light emitting diode D negative electrode is as photoelectric coupling sensor 10
Output end OUT of triggering end IN, light-receiving triode the Q emitter stage as photoelectric coupling sensor 10.Wherein, power supply is preset
VCC size can be+5V.
Specifically, the external structure of photoelectric coupling sensor 10 can be the structure shown in Fig. 2, light emitting diode D and light
Triode Q is received to be correspondingly arranged at respectively in the pin 101 and 102 of photoelectric coupling sensor 10.As shown in figure 3, can be by photoelectricity
Coupling sensor 10 is arranged on the bottom of detergent the storage box 30 to detect low liquid level, and pin 101 and 102 is deep into detergent
In the storage box 30；Or photoelectric coupling sensor 10 is arranged on to the top of detergent the storage box 30, to detect high level；Or
A photoelectric coupling sensor 10 is set to detect high level and low simultaneously in the upper and lower part of detergent the storage box 30 respectively
Liquid level.
With reference to shown in Fig. 2 and Fig. 3, when detergent liquid level is higher than photoelectric coupling sensor 10, between pin 101 and 102
Region 100 be detergent, i.e., when light emitting diode D triggering and conductings, light emitting diode D transmitting light washed through intermediate medium
Agent is launched to light-receiving triode Q；And when detergent liquid level is less than photoelectric coupling sensor 10, between pin 101 and 102
Region 100 is air, i.e., when light emitting diode D triggering and conductings, the light of light emitting diode D transmittings is through intermediate medium air launch
To light-receiving triode Q.Because intermediate medium is different, so the light intensity magnitude that light-receiving triode Q is received is different, final light
The detection signal for being electrically coupled the output of sensing 10 is also just different.Liquid level detection unit 20 by being changed, being analyzed to detection signal,
The detergent liquid level in detergent the storage box 30 can accurately and reliably be judged.
For example, for the washing machine with automatic detergent adding function, as shown in figure 3, can be stored in detergent
The top of box 30 sets detergent adding mouth 301, and user can be by detergent adding mouth 101 to going out in detergent the storage box 30 to add
Add detergent.Meanwhile detergent delivery outlet 302 can be set in the bottom of detergent the storage box 30, the delivery outlet 302 can be by leading
Pipe is connected to the peristaltic pump of washing machine.The controller of washing machine by obscure weighing technology automatic sensing clothing weight, with reference to
The program for washing that user selectes, and comprehensive built-in temperature sensor judges the dosage of current environmental temperature adjustment detergent,
Intelligent control peristaltic pump, lotion is squeezed into demultplexer, so as to realize that the intelligence of detergent is launched, is truly realized full-automatic
It is intelligent.
When photoelectric coupling sensor 10 is arranged at the preset liquid level of the bottom of detergent the storage box 30, if washing
Agent liquid level is less than preset liquid level, then when light emitting diode D is turned on, the light of light emitting diode D transmittings is empty through intermediate medium
Gas is launched to light-receiving triode Q, light-receiving triode Q generates first detection signal according to the light intensity magnitude received, and defeated
Go out to liquid level detection unit 20；If detergent liquid level is higher than preset liquid level, then when light emitting diode D is turned on, lights
Diode D transmitting light launch through intermediate medium detergent to light-receiving triode Q, when intermediate medium is air compared with, light
Receiving the light intensity that triode Q is received can be reduced, and light-receiving triode Q believes according to the detection of light intensity magnitude generation second received
Number, and export to liquid level detection unit 20.
Liquid level detection unit 20 judges whether detergent liquid level is less than preset liquid level according to detection signal, if it is,
Illustrate that the detergent in detergent the storage box 30 is less, in order to avoid occurring to influence showing for laundry effect because detergent is less
As now liquid level detection unit 20 can be lighted by controlling the detergent being arranged on washing machine to lack indicator lamp, or control
Voice broadcast module processed reports the prompt tone of " detergent lacks, and please add ", then or control UI (User Interface, use
Family interface) " detergent lacks interface display, please add！" text prompt information etc., to carry out low liquid level prompting to user.
Thus, photoelectric yield of the device using photoelectric coupling sensor in detergent and in air is than different spies
Property, detergent liquid level can be accurately and reliably detected, avoids occurring because detergent wall built-up or local assembly hardening cause
The inaccurate phenomenon of the detergent liquid level of detection, and cost is relatively low.
Further, it is specific how according to detection letter to make those skilled in the art better understand liquid level detection unit 20
Number, judge the detergent liquid level in detergent the storage box 30, illustrated with reference to specific example of the present utility model.
According to one embodiment of the present utility model, as shown in figure 4, liquid level detection unit 20 includes triggers circuit 201, letter
Number change-over circuit 202 and microcontroller 203.Triggers circuit 201 is connected with light emitting diode D negative electrode, and triggers circuit 201 is micro-
Trigger signal is sent under the control of controller 203 to light emitting diode D, so that light emitting diode D is operated, signal conversion electricity
Road 202 is connected between light-receiving triode Q emitter stage and microcontroller 203, and signaling conversion circuit 202 turns detection signal
It is changed to the recognizable voltage signal of microcontroller 203.
Specifically, on washing machine after electricity, microcontroller 203 controls triggers circuit 201 to turn on, so that triggers circuit
201 send trigger signal to light emitting diode Q.Light emitting diode Q is turned on after trigger signal is received to light, through intermediate medium
(detergent or air) is irradiated to light-receiving triode Q.Light-receiving triode Q generates corresponding according to the light intensity magnitude received
Detection signal, then, detection signal is converted to corresponding voltage signal, finally, microcontroller by signaling conversion circuit 202
203 judge detergent liquid level according to voltage signal.Thus, it is possible to accurately and reliably detect detergent liquid level, avoid occurring by
In detergent wall built-up or the local phenomenon assembled hardening and cause the detergent liquid level inaccuracy of detection.
Further, in embodiment of the present utility model, as shown in figure 4, triggers circuit 201 may include：First resistor
R1, the first triode Q1, second resistance R2 and 3rd resistor R3.Wherein, first resistor R1 one end and 203 microcontrollers 203
It is connected.First triode Q1 base stage is connected with the first resistor R1 other end, the first triode Q1 grounded emitter.Second
Resistance R2 one end is connected with the first triode Q1 colelctor electrode, the second resistance R2 other end and light emitting diode D negative electrode
It is connected.3rd resistor R3 is connected between the first triode Q1 base stage and emitter stage.
Signaling conversion circuit 202 may include：First diode D1, the second diode D2, the first electric capacity C1, the 4th resistance
R4, the 5th resistance R5.Wherein, the first diode D1 anode is connected with the second diode D2 negative electrode and has a first node A,
First diode D1 negative electrode is connected with default power supply VCC, the second diode D2 plus earth, first node A and microcontroller
Device 203 is connected.First electric capacity C1 is in parallel with the second diode D2.4th resistance R4 one end is connected with first node A, the 4th electricity
The resistance R4 other end is connected with light-receiving triode Q emitter stage.5th resistance R5 one end and the 4th resistance R4 other end
It is connected, the 5th resistance R5 other end is grounded after being connected with the second diode D2 negative electrode.
Specifically, on washing machine after electricity, microcontroller 203 exports high level signal to Q1 base stage, to control Q1 to lead
It is logical.When Q1 is turned on, light emitting diode D minus earth, light emitting diode D conductings are luminous, light through intermediate medium (air or
Detergent) it is irradiated on light-receiving triode Q.Because intermediate medium can influence the light intensity magnitude that light-receiving triode Q receives,
So the pressure drop on Q can be influenceed, and then influence the size that the voltage signal that signaling conversion circuit 202 exports is A point voltages.Cause
This, microcontroller 203 is by detecting the sizes of A point voltages, you can judges the detergent liquid level in detergent the storage box 30.
It is appreciated that when intermediate medium is detergent, when intermediate medium is air compared with, be irradiated to the pole of light-receiving three
Light intensity on pipe Q can be reduced, therefore the pressure drop increase on Q, be exported to the voltage reduction of A points.Similarly understand, when intermediate medium is
During air, when intermediate medium is detergent compared with, export to the voltage of A points and increase.Assuming that A points when intermediate medium is detergent
Voltage be first voltage, the voltage of A points is second voltage when intermediate medium is air.When microcontroller 203 detects the electricity of A points
Press for second voltage when, illustrate that now detergent liquid level is less than preset liquid level, the detergent in detergent the storage box 30 is less,
To avoid occurring the phenomenon that laundry effect is influenceed because detergent is less, microcontroller 203 can be arranged on by control and be washed
Detergent on clothing machine lacks indicator lamp and lighted, or control voice broadcasting module reports carrying for " detergent lacking, and please add "
Show sound, then or control UI interface displays " detergent lacks, and please add！" text prompt information etc., it is low to be carried out to user
Liquid level is reminded, and substantially increases the usage experience of user.
In summary, according to the detergent liquid level detection device for washing machine of the utility model embodiment, by setting
The light intensity magnitude that the photoelectric coupling sensor in detergent the storage box receives according to light-receiving triode is put to generate accordingly
Detection signal, then judge according to detection signal by liquid level detection unit the detergent liquid level in detergent the storage box.Thus, should
Photoelectric yield of the device using photoelectric coupling sensor in detergent and in air, can accurately, reliably than different characteristics
Ground detects detergent liquid level, avoids occurring due to detergent wall built-up or the local detergent liquid level assembled hardening and cause detection
Inaccurate phenomenon, and cost is relatively low.
In addition, the utility model also proposes a kind of washing machine, it includes the above-mentioned detergent liquid level for washing machine and examined
Survey device.
According to the washing machine of the utility model embodiment, passed by the photoelectric coupling of above-mentioned detergent liquid level detection device
The light intensity magnitude that sensor is received according to light-receiving triode generates corresponding detection signal, then by liquid level detection unit according to
Detection signal judges the detergent liquid level in detergent the storage box.Thus, the washing machine is being washed using photoelectric coupling sensor
Agent neutralizes photoelectric yield in air than different characteristics, can accurately and reliably detect detergent liquid level, avoid occurring by
In detergent wall built-up or the local phenomenon assembled hardening and cause the detergent liquid level inaccuracy of detection, and cost is relatively low.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
It is individual, three etc., unless otherwise specifically defined.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, limited unless otherwise clear and definite.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present utility model.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with
Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area
Technical staff the different embodiments or example and the feature of different embodiments or example described in this specification can be entered
Row combines and combination.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (6)
- A kind of 1. detergent liquid level detection device for washing machine, it is characterised in that including：Photoelectric coupling sensor, the detergent the storage box that the photoelectric coupling sensor corresponds to the washing machine are set, the light Being electrically coupled sensor includes light emitting diode and light-receiving triode, and the photoelectric coupling sensor is according to the pole of light-receiving three The light intensity magnitude that pipe receives generates corresponding detection signal；Liquid level detection unit, the liquid level detection unit are connected with the photoelectric coupling sensor, and the liquid level detection unit is used In judging the detergent liquid level in the detergent the storage box according to the detection signal.
- 2. it is used for the detergent liquid level detection device of washing machine as claimed in claim 1, it is characterised in that the light-emitting diodes The anode of pipe is connected to default power supply after being connected with the colelctor electrode of the light-receiving triode, the negative electrode of the light emitting diode is made For the triggering end of the photoelectric coupling sensor, the emitter stage of the light-receiving triode is as the photoelectric coupling sensor Output end.
- 3. it is used for the detergent liquid level detection device of washing machine as claimed in claim 1 or 2, it is characterised in that the liquid level Detection unit includes triggers circuit, signaling conversion circuit and microcontroller, the triggers circuit and the moon of the light emitting diode Extremely it is connected, the triggers circuit sends trigger signal to the light emitting diode under the control of the microcontroller, so that institute State light emitting diode to be operated, the signaling conversion circuit is connected to the emitter stage of the light-receiving triode and the micro-control Between device processed, the detection signal is converted to the recognizable voltage signal of the microcontroller by the signaling conversion circuit.
- 4. it is used for the detergent liquid level detection device of washing machine as claimed in claim 3, it is characterised in that the triggers circuit Including：First resistor, one end of the first resistor are connected with the microcontroller；First triode, the base stage of first triode are connected with the other end of the first resistor, first triode Grounded emitter；Second resistance, one end of the second resistance are connected with the colelctor electrode of first triode, the second resistance it is another One end is connected with the negative electrode of the light emitting diode；3rd resistor, the 3rd resistor are connected between base stage and the emitter stage of first triode.
- 5. it is used for the detergent liquid level detection device of washing machine as claimed in claim 3, it is characterised in that the signal conversion Circuit includes：First diode and the second diode, the anode of first diode are connected and had with the negative electrode of second diode There is first node, the negative electrode of first diode is connected with default power supply, the plus earth of second diode, and described One node is connected with the microcontroller；First electric capacity, first electric capacity and second diodes in parallel；4th resistance, one end of the 4th resistance are connected with the first node, the other end of the 4th resistance with it is described The emitter stage of light-receiving triode is connected；5th resistance, one end of the 5th resistance are connected with the other end of the 4th resistance, the 5th resistance it is another End is grounded after being connected with the negative electrode of second diode.
- 6. a kind of washing machine, it is characterised in that including the detergent for washing machine as any one of claim 1-5 Liquid level detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720285542.7U CN206784020U (en) | 2017-03-22 | 2017-03-22 | Washing machine and the detergent liquid level detection device for washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720285542.7U CN206784020U (en) | 2017-03-22 | 2017-03-22 | Washing machine and the detergent liquid level detection device for washing machine |
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| Publication Number | Publication Date |
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| CN206784020U true CN206784020U (en) | 2017-12-22 |
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ID=60706275
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| CN201720285542.7U Active CN206784020U (en) | 2017-03-22 | 2017-03-22 | Washing machine and the detergent liquid level detection device for washing machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111020977A (en) * | 2019-12-06 | 2020-04-17 | 珠海格力电器股份有限公司 | Detergent liquid level detection method and washing machine |
| CN111317415A (en) * | 2020-02-10 | 2020-06-23 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method of washing appliance, washing appliance and computer readable storage medium |
| CN112484799A (en) * | 2020-12-08 | 2021-03-12 | 河北海峰电子科技有限公司 | Ultrasonic open channel flowmeter |
| CN113089271A (en) * | 2021-03-23 | 2021-07-09 | 珠海格力电器股份有限公司 | Clothes treatment equipment and control method thereof |
| CN116113735A (en) * | 2020-07-30 | 2023-05-12 | 青岛海尔洗衣机有限公司 | Washing machine |
-
2017
- 2017-03-22 CN CN201720285542.7U patent/CN206784020U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111020977A (en) * | 2019-12-06 | 2020-04-17 | 珠海格力电器股份有限公司 | Detergent liquid level detection method and washing machine |
| CN111317415A (en) * | 2020-02-10 | 2020-06-23 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method of washing appliance, washing appliance and computer readable storage medium |
| CN116113735A (en) * | 2020-07-30 | 2023-05-12 | 青岛海尔洗衣机有限公司 | Washing machine |
| CN112484799A (en) * | 2020-12-08 | 2021-03-12 | 河北海峰电子科技有限公司 | Ultrasonic open channel flowmeter |
| CN113089271A (en) * | 2021-03-23 | 2021-07-09 | 珠海格力电器股份有限公司 | Clothes treatment equipment and control method thereof |
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Effective date of registration: 20190813 Address after: 214028 No. 18 Changjiang South Road, Wuxi National High-tech Development Zone, Jiangsu Province Patentee after: Wuxi Swan Electrical Appliances Co., Ltd. Address before: 214028 Wuxi Changjiang Road, New District, Jiangsu, No. 18 Patentee before: Wuxi Xiaotianer Co., Ltd. |
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