CN108642812A - A kind of novel water level sensor and washing machine - Google Patents
A kind of novel water level sensor and washing machine Download PDFInfo
- Publication number
- CN108642812A CN108642812A CN201810315880.XA CN201810315880A CN108642812A CN 108642812 A CN108642812 A CN 108642812A CN 201810315880 A CN201810315880 A CN 201810315880A CN 108642812 A CN108642812 A CN 108642812A
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- Prior art keywords
- water level
- shell
- level sensor
- terminal
- washing machine
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 155
- 238000005406 washing Methods 0.000 title claims abstract description 93
- 230000001681 protective effect Effects 0.000 claims description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 5
- 230000002459 sustained effect Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 2
- 230000005494 condensation Effects 0.000 abstract description 13
- 238000009833 condensation Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 13
- 230000008859 change Effects 0.000 description 10
- 230000005611 electricity Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- NWFNSTOSIVLCJA-UHFFFAOYSA-L copper;diacetate;hydrate Chemical compound O.[Cu+2].CC([O-])=O.CC([O-])=O NWFNSTOSIVLCJA-UHFFFAOYSA-L 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 208000012868 Overgrowth Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
- D06F33/42—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of draining
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/087—Water level measuring or regulating devices
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/18—Washing liquid level
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention discloses a kind of novel water level sensors, including shell, gas lid, adjusting screw by plate, shell is gentle to cover that the chamber that surrounds is built-in coil unit, coil unit includes at least two terminals, the terminal is stretched out from the interface of shell, it is each attached to the same side of shell, housing exterior walls are equipped with the baffle positioned at terminals of adjacent centre position, terminals of adjacent is spaced.The invention also discloses a kind of washing machines, and as above any water level sensor, water level sensor are housed thereon and are connected with the gas chamber of washing machine.By the way that the baffle positioned at terminals of adjacent centre position is arranged on shell, to ensure mutually insulated between terminals of adjacent, the short-circuit of terminals caused by shell moisture condensation is avoided.
Description
Technical field
The invention belongs to washing machine technology fields, specifically, being related to a kind of novel water level sensor, further relate to one kind and answer
With the washing machine of this novel water level sensor.
Background technology
Water level sensor is a kind of sensing for being used for sensed water level information and converting water level to electric signal in the prior art
Device comprising gas lid, shell, diaphragm, iron core, main spring and coil unit, lower part of the housing are equipped with Fluid pressure receiving chamber.Hydraulic pressure
Power is transmitted to sensor gas chamber by tracheae, and diaphragm is acted on by air pressure overcomes the bounce moving knife iron core of main spring to coil side
To movement, iron core is when coil inside occurs mobile, the change in approximately linear corresponding with the displacement of iron core of the inductance of coil
Change, this linear change is passed to computer board of washing machine by water level sensor through terminal, and computer board of washing machine is according to level sensor
The signal that device is sent out accurately controls the water level of washing machine.
Since the use environment of water level sensor is moister, coil and shell will be caused to condense, surface forms droplet, and makes
It obtains water level sensor and forms capacity effect, two terminals of water level sensor short trouble occur, influence output frequency.This
Outside, connector terminals are influenced to generate verdigris phenomenon by wet environment, bad with the termination contact of water level sensor, so that washing
The phenomenon that there is empty barrel washing or is dehydrated with water in clothing machine.
In view of this special to propose the present invention.
Invention content
The technical problem to be solved in the present invention is to overcome the deficiencies of the prior art and provide a kind of new type water simple in structure
Level sensor, to realize that water level sensor is moisture-proof, improves the purpose of security reliability；Another object of the present invention is to provide one
Control method and washing machine of the kind applied to the water-level detecting device and washing machine of washing machine, to realize sensed water level sensor just
The purpose often operated improves the reliability of water-level detecting device.
In order to solve the above technical problems, the present invention is using the basic conception of technical solution：
A kind of novel water level sensor, including shell, gas lid, adjusting screw, by plate, shell is gentle to be covered in the chamber surrounded
Equipped with coil unit, coil unit includes at least two terminals, and the terminal is stretched out from the interface of shell, is each attached to shell
The same side, housing exterior walls be equipped with positioned at terminals of adjacent centre position baffle, terminals of adjacent is spaced.
Further, the interface is parallel is disposed adjacent, and is in sustained height, terminal is from enclosure interior through corresponding grafting
Mouth stretches out outside shell, and about water level sensor axisymmetrical；Baffle is vertically arranged in the centre position of adjacent interface, and with
Housing exterior walls tangent line is perpendicular.
Further, the shell includes raise up extension, the lug boss in cylindrical shape and the pedestal that radially extends,
Lug boss and chassis interior are hollow to form the cavity installed for coil unit, and pedestal is located at the lower section of lug boss, and with gas lid
It is in mating connection；The same side of lug boss is set there are two interface, and terminal is stretched out from corresponding interface outside shell, lug boss
Outer wall is equipped with the baffle positioned at interface centre position, and side and the lug boss outer wall of baffle fit, another epitaxial lateral overgrowth
It stretches.
Further, the upper and lower ends of the baffle extend vertically in an axial direction, and the top of baffle is higher than the top of terminal, baffle
Bottom end extend to the pedestal of shell.
Further, the housing exterior walls are equipped with the protective cover being located above terminal, protective cover is horizontal positioned, with terminal phase
It is parallel, and extend outwardly.
Further, the top of the shell is equipped with opening, and adjusting screw is open through housing tip by plate and is inserted into enclosure interior
To block top end opening, adjusting screw is equipped with the interconnecting piece extended downwardly by the periphery of plate, housing exterior walls be equipped with it is corresponding, with
For the groove of interconnecting piece installation, to enable interconnecting piece and housing exterior walls form smooth curved surface；Outside the part and shell of protective cover
Wall is connected, and another part is connected to a fixed with adjusting screw by the interconnecting piece of plate.
Further, the middle part of the protective cover is a horizontal positioned fixed part, and the both ends of fixed part are separately connected vertically
The extension extended downwardly, the side of fixed part, which is mutually fitted closely with housing exterior walls and adjusting screw by the interconnecting piece of plate, to be connect,
The other side horizontally outward extends.
Further, the bottom end of the fixed part is connected with the top of baffle.
Preferably, the bottom end of extension is not higher than the bottom end of terminal.
Further, the shell is equipped with the rhone being located at below terminal, and the top of rhone is connected with interface,
Bottom is extending vertically into the pedestal of shell.
Another object of the present invention is to provide a kind of washing machines, and as above any water level sensor is housed thereon,
Water level sensor is connected with the gas chamber of washing machine, and is detected to washing machine internal water level by gas chamber.
After adopting the above technical scheme, the present invention has the advantages that compared with prior art.
1, it is located at the baffle in terminals of adjacent centre position by being arranged on shell, terminals of adjacent is spaced, to
Mutually insulated between guarantee terminals of adjacent avoids the short-circuit of terminals caused by shell moisture condensation.
2, by the protective cover being set on shell above terminal, protective cover is horizontal positioned, and extends outwardly, on shell
It will assemble to protective cover since humidity is formed by greatly condensation, under gravity, condensation is flow on the pedestal of shell.It is logical
Setting protective cover is crossed, condensation caused by the shell above terminal will not gather on terminal, avoid terminal and make moist
Wet environment influences generation verdigris phenomenon and further avoids washing machine so as to avoid the generation of termination contact unfavorable condition and go out
The case where existing empty barrel is washed or is dehydrated with water.
3, by the way that rhone is arranged, the bottom that condensation flow to shell along rhone is formed by terminal surrounding or terminal
On seat, to achieve the purpose that terminal is moisture-proof.
The specific implementation mode of the present invention is described in further detail below in conjunction with the accompanying drawings.
Description of the drawings
A part of the attached drawing as the present invention, for providing further understanding of the invention, of the invention is schematic
Embodiment and its explanation do not constitute inappropriate limitation of the present invention for explaining the present invention.Obviously, the accompanying drawings in the following description
Only some embodiments to those skilled in the art without creative efforts, can be with
Other accompanying drawings can also be obtained according to these attached drawings.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of water level sensor in the embodiment of the present invention；
Fig. 2 is the front view of water level sensor in the embodiment of the present invention；
Fig. 3 is sectional views of the Fig. 2 along the directions A-A；
Fig. 4 be in the embodiment of the present invention adjusting screw by the structural schematic diagram of plate；
Fig. 5 is the schematic diagram of water-level detecting device in the embodiment of the present invention；
Fig. 6 is the control method flow chart of washing machine in the embodiment of the present invention.
In figure：100- water level sensors, 200- bleeder circuits, 300- oscillating circuits, 1- shells, 2- gas lid, 3- adjust spiral shell
Nail is by plate, 4- diaphragm of rubber, 5- coils axis, 6- terminals, 7- coils, 8- adjusting screws, 9- magnetic cores, 10- riveting rings, 11- air inlets
Mouth, 101- interfaces, 102- baffles, 103- rhones, 104- lug bosses, 105- pedestals, 106- grooves, 301- interconnecting pieces,
302- protective covers, 3021- fixed parts, 3022- extensions, 303- adjustment holes, 304- claws, 12- first terminals, 13- second ends
Son, 14- pull-up resistors, 15- processors.
It should be noted that these attached drawings and verbal description are not intended to the design model limiting the invention in any way
It encloses, but is that those skilled in the art illustrate idea of the invention by referring to specific embodiments.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in embodiment is clearly and completely described, following embodiment for illustrating the present invention, but
It is not limited to the scope of the present invention.
As shown in Figures 1 to 4, a kind of novel water level sensor 100, including shell 1, gas are described in the embodiment of the present invention
Lid 2, adjusting screw are equipped with diaphragm of rubber 4 by plate 3 in the chamber that 1 gentle lid 2 of shell surrounds, chamber is divided by diaphragm of rubber 4
Upper and lower two chambers, lower chambers are air inlet cavity, and air inlet cavity is connected with the suction nozzle 11 that gas lid 2 is equipped with；In upper chamber
Equipped with coil unit, coil unit includes coil axis 5, inductance coil 7 and at least two terminals 6；Shell 1 is equipped with interface
101, terminal 6 is stretched out from the interface 101 of shell 1, is each attached to the same side of shell 1, and 1 outer wall of shell is equipped with positioned at adjacent
The baffle 102 in 6 centre position of terminal, terminals of adjacent 6 is spaced, and to ensure mutually insulated between terminals of adjacent 6, is avoided
6 short circuit of terminal caused by shell 1 condenses.
A kind of washing machine is also described in the embodiment of the present invention, and a kind of novel water level sensor as described above is housed thereon
100, washing machine includes inner barrel and outer barrel, and the outer barrel of washing machine is connected with gas chamber, and the air inlet cavity of water level sensor 100 passes through
Suction nozzle 11 is connected with the gas chamber of washing machine, to enable the outer barrel of washing machine be connected with water level sensor 100；Water is sensor
100 are detected washing machine internal water level through gas chamber, and the terminal 6 of water level sensor 100 is connected with the control circuit of washing machine
It connects, to enable water level sensor 100 feed back variable signal to the computer board of washing machine, computer board of washing machine is adjusted according to variable signal
Water level of washing machine height, accurately controls water level to reach.
Embodiment one
As shown in Figures 1 to 4, describe a kind of novel water level sensor 100 in the present embodiment, including shell 1, gas lid 2,
Adjusting screw is equipped with diaphragm of rubber 4 by plate 3 in the chamber that 1 gentle lid 2 of shell surrounds, chamber is divided into upper and lower two by diaphragm of rubber 4
A chamber, lower chambers are air inlet cavity, and air inlet cavity is connected with the suction nozzle 11 that gas lid 2 is equipped with；Upper chamber is built-in wired
Coil unit, coil unit include coil axis 5, inductance coil 7 and at least two terminals 6.
In the present embodiment, gas lid 2 is fixedly connected with the bottom of shell 1 by 10 phase of riveting ring, and gas lid 2 is surrounded with shell 1
Chamber in diaphragm of rubber 4 is housed, the side of diaphragm of rubber 4 connects air inlet cavity, and the other side of diaphragm connects cylindrical shape magnetic core
9；Coil unit is also equipped in upper chamber, coil unit is located at the top of magnetic core 9.Coil unit includes coil axis 5, inductance coil
7 and at least two terminals 6, coil axis 5 be coaxially disposed with magnetic core 9, inductance coil 7 is wrapped on coil axis 5, inductance coil 7
Both ends connect two terminals 6, and air pressure is acted on by air inlet cavity on diaphragm of rubber 4, to push about 4 diaphragm of rubber dynamic
Make, the action of diaphragm of rubber 4 drives magnetic core 9 to move up and down, and the electromagnetic wire of inductance coil 7 is cut when magnetic core 9 moves, to drive electricity
The inductance value of sense coil 7 changes, and the variation of inductance value feeds back to computer board of washing machine, computer board of washing machine root through terminal 6
According to the signal of inductance value, judge whether water level of washing machine reaches requirement position.The upper end of shell 1 is connected with adjusting screw by plate 3
It connects, adjusting screw is equipped with the adjustment hole 303 of installation and adjustment screw by 3 top of plate, and adjusting screw is placed in coil across adjustment hole 303
In axis 5, position of the adjusting screw in adjustment hole 303 can change electromagnetic quantities, to achieve the purpose that accurately to adjust.
In the present embodiment, coil axis 5 be it is hollow columnar structured, the upper and lower ends of coil axis 5 be equipped with protrusion with
The extension of limited support inductance coil 7, stable support inductance coil 7 are additionally provided with towards 101 direction of interface on coil axis 5
The inserted block of protrusion, inserted block are equipped with the slot of corresponding inserting terminal 6.Terminal 6 is plugged in slot from inside to outside, in terminal 6
Rear end is equipped with the limit hook of bending.By enabling the grafting from inside to outside of terminal 6, the adjusted screw 8 in rear end of terminal 6 be kept off by plate 3
Plate 102, it is not easily shifted in forceful action lower terminal 6, to be not easy to cause coil breakage in external strong pull terminal 6
Situation.
Embodiment two
As shown in Figures 1 to 4, describe a kind of novel water level sensor 100 in the present embodiment, including shell 1, gas lid 2,
Adjusting screw is by plate 3, and chamber that 1 gentle lid 2 of shell surrounds is built-in, and to have coil unit, coil unit include coil axis 5, inductor wire
Circle 7 and at least two terminals 6；Shell 1 is equipped with interface 101, and terminal 6 is stretched out from the interface 101 of shell 1, is each attached to
The same side of shell 1,1 outer wall of shell are equipped with the baffle 102 positioned at 6 centre position of terminals of adjacent, terminals of adjacent 6 are separated by
It opens, to ensure mutually insulated between terminals of adjacent 6, avoids 6 short circuit of terminal caused by shell 1 condenses.
In the present embodiment, interface 101 is parallel to be disposed adjacent, and is in sustained height, the warp of terminal 6 is from inside shell 1 through phase
Corresponding interface 101 stretches out outside shell 1, and about 100 axisymmetrical of water level sensor, and baffle 102 is vertically arranged in adjacent insert
The centre position of interface 101, and it is perpendicular with 1 outer wall tangent line of shell, two terminals 6 are spaced.The shell 1 include to
Upper protrusion extends, the lug boss 104 in cylindrical shape and the pedestal 105 that radially extends, lug boss 104 with inside pedestal 105
It is hollow that form the cavity installed for coil unit, pedestal 105 is located at the lower section of lug boss 104, and with 2 company of matching of gas lid
It connects；The same side of lug boss 104 is set there are two interface 101, and terminal 6 stretches out outside shell from corresponding interface 101, is fixed
In the same side of lug boss 104,104 outer wall of lug boss is equipped with the baffle 102 positioned at 101 centre position of interface, baffle 102
Side fit and be fixedly connected with 104 outer wall of lug boss, the other side extends outwardly.The upper and lower ends of baffle 102 are erected in an axial direction
Straight to extend, the top of baffle 102 is higher than the top of terminal 6, and the bottom end of baffle 102 extends to the pedestal 105 of shell 1.
Embodiment three
As shown in Figures 1 to 4,1 outer wall of the present embodiment middle casing is equipped with the protective cover 302 for being located at 6 top of terminal, protection
Cover 302 is horizontal positioned, parallel with terminal, and extends outwardly.It will assemble to anti-since humidity is formed by greatly condensation on shell 1
On shield 302, under gravity, condensation is flow on the pedestal 105 of shell 1.By the way that protective cover 302 is arranged, it is located at terminal 6
Condensation will not gather on terminal 6 caused by the shell 1 of top, and avoiding terminal 6 is influenced to generate verdigris by wet environment
Phenomenon the occurrence of so as to avoid 6 poor contact of terminal, further avoids washing machine and empty barrel washing or de- with water occurs
The case where water.
In the present embodiment, the top of shell 1 is equipped with opening, and adjusting screw is inserted into shell 1 by plate 3 through 1 top end opening of shell
Inside is to block top end opening, and adjusting screw is surrounded by the claw 304 extended downwardly by plate 3, and adjusting screw is by plate 3 through card
Pawl 304 is clamped with 1 phase of shell, and adjusting screw is additionally provided with the interconnecting piece 301 extended downwardly by the periphery of plate 3, and 1 outer wall of shell is equipped with
Groove 106 corresponding, for the installation of interconnecting piece 301, to enable interconnecting piece 301 and 1 outer wall of shell form smooth curved surface；
A part for protective cover 302 is connected with 1 external wall of shell, and another part is connected with adjusting screw by the interconnecting piece 301 of plate 3 solid
Fixed, protective cover 302 is wholely set or is provided separately by plate 3 with adjusting screw.
In the present embodiment, the middle part of protective cover 302 is a horizontal positioned fixed part 3021, the both ends point of fixed part 3021
The company of the extension 3022 extended straight down, the side of fixed part 3021 and 1 outer wall of shell and adjusting screw by plate 3 is not connected
301 phase of socket part fits closely connection, and the other side horizontally outward extends.The bottom end of fixed part 3021 is connected with the top of baffle 102
It connects.The bottom end of extension 3022 is not higher than the bottom end of terminal 6.6 the formed condensation in top of terminal gathers the upper of fixed part 3021
End, when condensation gathers it is a certain amount of after, under gravity, condensation falls to the pedestal of shell 1 along extension 3022
On 105.
In the present embodiment, shell 1 is equipped with the rhone 103 for being located at 6 lower section of terminal, the top of rhone 103 and grafting
Mouth 101 is connected, and bottom is extending vertically into the pedestal 105 of shell 1.By the way that rhone 103,6 surrounding of terminal or terminal 6 is arranged
On be formed by condensation and flow on the pedestal 105 of shell 1 along rhone 103, to achieve the purpose that terminal 6 is moisture-proof.
Example IV
As shown in Figures 1 to 4, a kind of washing machine is described in the present embodiment, and as above any described one kind is housed thereon
Novel water level sensor 100, washing machine include inner barrel and outer barrel, and the outer barrel of washing machine is connected with gas chamber, water level sensor 100
Air inlet cavity be connected with the gas chamber of washing machine by suction nozzle 11, to enable the outer barrel and 100 phase of water level sensor of washing machine
Connection；The terminal 6 of water level sensor 100 is connected with the control circuit of washing machine, to enable water level sensor 100 to washing machine
Computer board feeds back variable signal, and computer board of washing machine adjusts water level of washing machine height according to variable signal, to reach to water level
Accurately control.
In the present embodiment, when washing machine works, the gas chamber of washing machine changes according to outer barrrel water amount and leads to air pressure change,
To which air pressure is acted on by air inlet cavity on diaphragm of rubber 4, to push diaphragm of rubber 4 to move up and down, diaphragm of rubber 4 acts
It drives magnetic core 9 to move up and down, the electromagnetic wire of inductance coil 7 is cut when magnetic core 9 moves, to drive the inductance value of inductance coil 7
Change, the variation of inductance value feeds back to computer board of washing machine through terminal 6, computer board of washing machine according to the signal of inductance value,
Judge whether water level of washing machine reaches requirement position.If water level not up to requires position, inlet valve opening is controlled, to laundry
It supplies water in machine, water level is improved, until reaching requirement position；If computer board of washing machine judges washing machine according to inductance value signal
Water level is more than to require position, then control drain valve is opened again, is drained outward, and water level is reduced, until reaching requirement water level position,
To achieve effective control the purpose of water level of washing machine.
Embodiment five
As shown in Figure 5 to Figure 6, a kind of water-level detecting device applied to washing machine is described in the embodiment of the present invention, is wrapped
Water level sensor 100, oscillating circuit 300, bleeder circuit 200 and processor 15 are included, water level sensor 100 is used for in washing machine
Portion's water level is detected, and oscillating circuit 300 is connected with water level sensor 100, bleeder circuit 200 through water level sensor 100 with
Oscillating circuit 300 is connected, and processor 15 is connected with oscillating circuit 300 and bleeder circuit 200 respectively, to receive oscillation electricity
The electric signal that road and bleeder circuit are sent out, and calculate corresponding water level value and voltage value.It, can by the way that bleeder circuit 200 is arranged
With the voltage difference through bleeder circuit 200 come judge water level sensor 100 whether through moisture environment and fail, improve detection dress
The degree of reliability set.
A kind of control method of washing machine is also described in the embodiment of the present invention, to such as taking up an official post in washing machine operational process
Voltage difference between a kind of terminal of the water level sensor in water-level detecting device applied to washing machine described in one carries out real-time
Detection.Pass through the voltage difference between the terminal in the real-time sensed water level sensor in washing machine operational process, it can be ensured that water level
The normal operation of sensor, avoiding water level sensor, environmental disutility can not carry out normal water level detecting through moisture, thus into
The case where one step avoids washing machine from empty barrel washing occur or be dehydrated with water.
A kind of washing machine is also described in the embodiment of the present invention, which includes that any described one kind as above is applied to
The water-level detecting device and control computer board, the water level sensor 100 of water-level detecting device and the gas chamber phase of washing machine of washing machine
Connection, the water level of washing machine internal is measured by gas chamber；Water level sensor 100 accesses water level detecting dress by two terminal
It sets, water-level detecting device is connected with control computer board, and the washing machine internal water level detected by water level sensor 100 is anti-
It feeds and controls computer board；And the washing machine is using a kind of control method of as above any washing machine.
Embodiment six
As shown in figure 5, describing a kind of water-level detecting device applied to washing machine, including level sensor in the present embodiment
Device 100, oscillating circuit 300, bleeder circuit 200 and processor 15, water level sensor 100 are used to carry out washing machine internal water level
Detection, oscillating circuit 300 are connected with water level sensor 100, and bleeder circuit 200 is through water level sensor 100 and oscillating circuit
300 are connected, and processor 15 is connected with oscillating circuit 300 and bleeder circuit 200 respectively, to receive oscillating circuit and partial pressure electricity
The electric signal that road is sent out, and calculate corresponding water level value and voltage value.It, can be through partial pressure electricity by the way that bleeder circuit 200 is arranged
The voltage difference on road 200 come judge water level sensor 100 whether through moisture environment and fail, improve the reliable journey of detection device
Degree.
In the present embodiment, oscillating circuit 300 is connected with water level sensor 100, and the magnetic core of water level sensor 100 is due to upper
Lower mobile sectioned coil generates inductance, and inductance transmits oscillation frequency by being combined to processor 15 with the resistance of the appearance of oscillating circuit 300
Rate square wave, processor 15 feed back to the control computer of washing machine by calculating the water level value measured by water level sensor 100
Plate, the composition of oscillating circuit 300 is referring specifically to attached drawing 1.
In the present embodiment, water level sensor 100 includes first terminal 12 and first terminal 13, and first terminal 12 is electric with oscillation
Road 300 is connected, and oscillating circuit 300 is additionally provided with earthing or grounding means, and earthing or grounding means is connected with first terminal 12, and first terminal 13 divides
It is not connected with oscillating circuit 300 and bleeder circuit 200.The output end of bleeder circuit 200 respectively with water level sensor 100
One terminal 13 is connected with processor 1, and bleeder circuit 200 includes pull-up resistor 14, one end of pull-up resistor 14 and first terminal
13 are connected, other end ground connection.By the way that one end ground connection is arranged, one end connects the pull-up resistor 14 of Second terminal, pull-up resistor 14
Voltage difference between 100 two terminals of the voltage difference at both ends and water level sensor is equal, can be by measuring 14 both ends of pull-up resistor
Voltage difference directly calculate the voltage difference between 100 two terminals of water level sensor, when pull-up resistor 14 is due to water level sensor
Wet environment residing for 100 causes resistance to change, and voltage difference of the two ends changes simultaneously, is equivalent to water level sensor
Voltage difference between 100 two-terminals changes, at this point it is possible to detect the change of this voltage by processor 15, and by its
Feed back to control computer board.When environment described in the water level sensor 100 is excessively moist, pull-up resistor 14 fails at this time, quite
Pull-up resistor 14 is crossed in the first terminal 13 of water level sensor 100 to be directly grounded, this moment the first end of water level sensor 100
Son 12 and first terminal 13 are grounded simultaneously, and water level sensor 100 fails, this variation is fed back to control computer by processor 15
Plate, control computer board warning reminding user water level sensor 100 fail.
Embodiment seven
As shown in Figure 5 to Figure 6, a kind of control method of washing machine is described in the present embodiment, in washing machine operational process
In voltage between the terminal of the water level sensor in a kind of as above any water-level detecting device applied to washing machine
Difference is measured in real time.The control method includes the following steps：
Step 1：Washing machine, which is powered, to be run, and the voltage difference between two terminals of water level sensor proceeds by real-time detection；
Step 2：Voltage difference by detecting pull-up resistor both ends calculates the voltage difference between two terminals of water level sensor,
And judge otherwise the voltage difference between two terminals of water level sensor whether in setting range, is held if so, executing step 3
Row step 4；
Step 3：Washing machine continues normal operation；
Step 4：Washing machine is out of service.
In the present embodiment, the output end of the voltage difference through bleeder circuit 200 at 14 both ends of pull-up resistor passes to processor 15,
Processor 15 calculates the voltage difference between 100 two terminals of water level sensor and feeds back to control computer board, water level sensor 100
Voltage difference between two terminals is equal with the voltage difference at 14 both ends of pull-up resistor.If the electricity between 100 two terminals of water level sensor
Pressure difference is in setting range, and washing machine continues normal operation until terminating；If the voltage between 100 two terminals of water level sensor
For difference outside setting range, this result of calculation is passed to control computer board by processor, is controlled computer board alarm indication, is prompted
User's water level sensor electric voltage exception, user can debug problem according to washing machine specification, and replaceable water level passes when necessary
Sensor.Pass through the voltage difference between two terminals of real-time sensed water level sensor in washing machine operational process, it can be ensured that water level
The normal operation of sensor, avoiding water level sensor, environmental disutility can not carry out normal water level detecting through moisture, thus into
The case where one step avoids washing machine from empty barrel washing occur or be dehydrated with water.
Embodiment eight
As shown in Figure 5 to Figure 6, a kind of washing machine is described in the present embodiment, which includes as above any described
A kind of water-level detecting device applied to washing machine and control computer board, water level sensor 100 and the laundry of water-level detecting device
The gas chamber of machine is connected, and the water level of washing machine internal is measured by gas chamber；Water level sensor 100 accesses water by two terminal
Level detecting apparatus, water-level detecting device are connected with control computer board, will be in the washing machine detected by water level sensor 100
Portion's water level feeds back to control computer board；And the washing machine is using a kind of control method of as above any washing machine.
As shown in fig. 6, the washing machine in the present embodiment is being washed using a kind of as above any control method for washing machine
Voltage difference in clothing machine operational process between 100 two terminals of water level sensor is measured in real time, and judges water level sensor
Whether the voltage difference between 100 two terminals is in setting range, if the voltage difference of two terminals is in setting range, laundry
Machine judgement water level sensor can be worked normally, and washing machine continues normal operation, until terminating；If 100 liang of water level sensor
Voltage difference between a terminal is in outside setting range, then washing machine judgement water level sensor occurs abnormal, and control circuit board is sent out
Alarm indication prompts user's water level sensor to be abnormal, and failure problems can be discharged according to washing machine specification in user, when necessary
Replaceable water level sensor.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this patent
Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompt make it is a little change or be modified to
The equivalent embodiment of equivalent variations, it is right according to the technical essence of the invention as long as being the content without departing from technical solution of the present invention
Any simple modification, equivalent change and modification made by above example, in the range of still falling within the present invention program.
Claims (10)
1. a kind of novel water level sensor, including shell, gas lid, adjusting screw, by plate, the chamber that the gentle lid of shell surrounds is built-in
It includes at least two terminals to have coil unit, coil unit, which is characterized in that the terminal is stretched out from the interface of shell,
It is fixed on the same side of shell, housing exterior walls are equipped with the baffle positioned at terminals of adjacent centre position, terminals of adjacent is separated by
It opens.
2. a kind of novel water level sensor according to claim 1, which is characterized in that the interface is parallel adjacent to be set
It sets, is in sustained height, terminal is stretched out through corresponding interface outside shell from enclosure interior, and about water level sensor axis pair
Claim；Baffle is vertically arranged in the centre position of adjacent interface, and perpendicular with housing exterior walls tangent line.
3. a kind of novel water level sensor according to claim 2, which is characterized in that the shell includes raising up to prolong
Stretch, the lug boss in cylindrical shape and the pedestal that radially extends, lug boss it is hollow to be formed for coil unit with chassis interior
The cavity of installation, pedestal are located at the lower section of lug boss, and in mating connection with gas lid；The same side of lug boss is set there are two grafting
Mouthful, terminal is stretched out from corresponding interface outside shell, and lug boss outer wall is equipped with the baffle positioned at interface centre position, gear
The side of plate fits with lug boss outer wall, and the other side extends outwardly.
4. a kind of novel water level sensor according to claim 3, which is characterized in that the upper and lower ends of the baffle are along axis
Extend to vertical, the top of baffle is higher than the top of terminal, and the bottom end of baffle extends to the pedestal of shell.
5. a kind of novel water level sensor according to any one of claims 1 to 4, which is characterized in that on the housing exterior walls
Equipped with the protective cover above terminal, protective cover is horizontal positioned, parallel with terminal, and extends outwardly.
6. a kind of novel water level sensor according to claim 5, which is characterized in that the top of the shell is equipped with and opens
Mouthful, adjusting screw is open through housing tip by plate and is inserted into enclosure interior to block top end opening, and adjusting screw is set by the periphery of plate
There is the interconnecting piece extended downwardly, housing exterior walls are equipped with groove corresponding, for interconnecting piece installation, to enable interconnecting piece and shell
Outer wall forms smooth curved surface；A part for protective cover is connected with housing exterior walls, and another part is with adjusting screw by the company of plate
Socket part is connected to a fixed.
7. a kind of novel water level sensor according to claim 6, which is characterized in that the middle part of the protective cover is a water
The fixed part of placing flat, the both ends of fixed part are separately connected the extension extended straight down, outside the side of fixed part and shell
Wall is mutually fitted closely connection with adjusting screw by the interconnecting piece of plate, and the other side horizontally outward extends.
8. a kind of novel water level sensor according to claim 7, which is characterized in that the bottom end of the fixed part and baffle
Top be connected；
Preferably, the bottom end of extension is not higher than the bottom end of terminal.
9. a kind of novel water level sensor according to any one of claims 1 to 8, which is characterized in that the shell is equipped with
The top of rhone below terminal, rhone is connected with interface, and bottom is extending vertically into the pedestal of shell.
10. a kind of washing machine, which is characterized in that any water level sensor of the claims 1 to 9, water are housed thereon
Level sensor is connected with the gas chamber of washing machine.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810315880.XA CN108642812B (en) | 2018-04-10 | 2018-04-10 | Novel water level sensor applied to washing machine |
| PCT/CN2019/081734 WO2019196789A1 (en) | 2018-04-10 | 2019-04-08 | New water level sensor and washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810315880.XA CN108642812B (en) | 2018-04-10 | 2018-04-10 | Novel water level sensor applied to washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108642812A true CN108642812A (en) | 2018-10-12 |
| CN108642812B CN108642812B (en) | 2022-04-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810315880.XA Active CN108642812B (en) | 2018-04-10 | 2018-04-10 | Novel water level sensor applied to washing machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108642812B (en) |
| WO (1) | WO2019196789A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019196789A1 (en) * | 2018-04-10 | 2019-10-17 | 青岛海尔洗衣机有限公司 | New water level sensor and washing machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108642812B (en) | 2022-04-26 |
| WO2019196789A1 (en) | 2019-10-17 |
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Effective date of registration: 20220401 Address after: No.16 Huatian north, Ronggui high tech Zone, Shunde District, Foshan City, Guangdong Province, 528306 Applicant after: FOSHAN SHUNDE HAIER ELECTRIC Co.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER WASHING MACHINE Co.,Ltd. |
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