CN206531545U - Water level sensor of washing machine - Google Patents
Water level sensor of washing machine Download PDFInfo
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- CN206531545U CN206531545U CN201621256258.9U CN201621256258U CN206531545U CN 206531545 U CN206531545 U CN 206531545U CN 201621256258 U CN201621256258 U CN 201621256258U CN 206531545 U CN206531545 U CN 206531545U
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- washing machine
- water level
- level sensor
- steel ball
- movable steel
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Abstract
The utility model provides a kind of water level sensor of washing machine applied to washing machine parts technical field, diaphragm of rubber (2) is set in the sensor housing (1) of described water level sensor of washing machine, the gas cavity (3) of diaphragm of rubber (2) side is connected with air chamber, diaphragm of rubber (2) opposite side sets magnetic core (4), inductance coil (5) is set around magnetic core (4), movable steel ball (6) is also set up on magnetic core (4), movable steel ball (6) is located in sensor housing (1), water level sensor of washing machine described in the utility model, it is simple in construction, can be when water level sensor of washing machine be rocked with washing machine, the inductance value of the inductance coil of water level sensor of washing machine is changed, effectively correct the frequency of oscillation of oscillating circuit, change the frequency of level sensor, it is finally reached raising level sensor control precision, improve washing machine control performance.
Description
Technical field
The utility model belongs to washing machine parts technical field, more specifically, is to be related to a kind of water level of washing machine to pass
Sensor.
Background technology
Water level sensor of washing machine is simple in construction, easy to control, is widely used in low and middle-end, middle-end, high-end washing machines.
In the prior art, washing machine numerical digit sensor is only available to one LC oscillation circuit frequency of computer board of washing machine, and laundry is electromechanical
Brain plate controls to adjust water level of washing machine according to the oscillation circuit frequency signal.And the water level sensor of washing machine of this structure, nothing
Method is modified to oscillation circuit frequency, so that the precision of water level sensor of washing machine can not be ensured, influences the entirety of washing machine
Performance quality, influences product competitiveness.
Utility model content
Technical problem to be solved in the utility model is：There is provided a kind of simple in construction, energy in view of the shortcomings of the prior art
Enough when water level sensor of washing machine is rocked with washing machine, the inductance value of the inductance coil of water level sensor of washing machine is carried out
Change, effectively the frequency of oscillation of amendment oscillating circuit, change the frequency of level sensor, be finally reached raising level sensor control
Precision processed, improves the water level sensor of washing machine of washing machine performance.
Techniques discussed above is solved the problems, such as, the technical scheme that the utility model is taken is：
The utility model is a kind of water level sensor of washing machine, and described washing machine includes inner cylinder, outer barrel, outer barrel and air chamber
Connection, described water level sensor of washing machine includes setting diaphragm of rubber, diaphragm of rubber one in sensor housing, sensor shell body
The gas cavity of side is connected with air chamber, and diaphragm of rubber opposite side sets to set around magnetic core, magnetic core and also set on inductance coil, magnetic core
Movable steel ball is put, movable steel ball is located in sensor shell body.
The edge position of described diaphragm of rubber inside sensor housing with being fixedly connected, magnetic core and diaphragm of rubber pars intermedia
Position connection, also sets up spring between magnetic core and sensor housing.
Also set up capsule in described sensor shell body, described magnetic core, movable steel ball, spring are disposed as being located at capsule
Interior structure, inductance coil suit is arranged on capsule.
Cavity is formed between described magnetic core and sensor housing, described water level sensor of washing machine is with washing machine
When shaking and vibrating, movable steel ball is configured to the structure in cavity internal vibration.
Described movable steel ball is in cavity internal vibration, and movable steel ball is configured to constantly change inductance coil inductance
Amount, so as to change the structure of the frequency of oscillation of the oscillating circuit of water level sensor of washing machine.
The sensor housing upper end sets nut, and lower spring end is resisted against magnetic core upper surface, and spring upper end is resisted against spiral shell
On cap, movable steel ball is located in spring, and during movable steel ball vibration, movable steel ball is configured in spring inner ring scope internal vibration
Structure.
Cavity is formed between described magnetic core, spring and nut, when described movable steel ball vibrates, movable steel ball is set to
Can cavity scope internal vibration structure.
Control unit is also set up in described sensor shell body, inductance coil is connected with control unit, inductance coil is set
For can to control unit feedback inductance amount variable signal structure.
Described control unit and computer board of washing machine, control unit is configured to computer board of washing machine feedback control
The structure of the frequency of oscillation variable signal of the oscillating circuit of part.
Described computer board of washing machine is configured to the frequency of oscillation change of the oscillating circuit fed back according to control unit
The structure of Signal Regulation water level of washing machine height.
Using the technical solution of the utility model, following beneficial effect can be obtained：
Water level sensor of washing machine described in the utility model, when washing machine works, the air chamber of washing machine is according to outer barrel
Water changes and causes air pressure change, so that air pressure is acted on diaphragm of rubber by gas cavity, so as to promote diaphragm of rubber
Move up and down, diaphragm of rubber action drives magnetic core to move up and down, so, and the electromagnetic wire of inductance coil is cut when magnetic core is moved, from
And driving the inductance value of inductance coil to change, the change of inductance value feeds back to computer board of washing machine, computer board of washing machine root
According to the signal of inductance value, judge whether water level of washing machine reaches requirement position, if water level is not up to, control water valve is opened,
Supplied water into washing machine, water level is improved, until reaching requirement position.And computer board of washing machine judges to wash according to inductance value signal
Clothing machine water level is more than when requiring position, then control water valve is opened again, and outside draining reduces water level, until reaching requirement water level
Position.Such structure, can effectively control water level of washing machine.And by the setting of movable steel ball, work and produce in washing machine
During vibration, the effect of vibration can cause the work in sensor shell body on the water level sensor of washing machine on washing machine
The dynamic tiny vibration of steel ball, the kinetic energy vibrated up and down to the acquisition of movable steel ball passes through movable steel ball different directions up and down
Rock, to cut the inductance coil magnetic line of force, so as to change the inductance value of inductance coil, and the variable signal of inductance value is delivered to
Computer board of washing machine, so that compensating elimination causes frequency accuracy difference because washing machine internal level sensor is vibrated and beyond laundry
Machine computer board (IC) identification less than frequency so that the signal that inductance coil passes to computer board of washing machine is modified,
The accuracy of signal is improved, so as to improve the accuracy that water level sensor of washing machine obtains signal.When washing machine works
Inside is not when sending vibration, then movable steel ball can only be stopped at quietly in sensor shell body, will not left and right teetertotter, will not
Level sensor frequency is caused to change.In most cases, washing machine can all cause different degrees of vibration in washing process,
This different degrees of vibration is enough to give movable steel ball internally rocks up and down.Said structure, small steel ball is fixed
Movable in environment, movable steel ball is rocked up and down each time, can change level sensor 0.2 ± 0.05KHz frequencies, can be to portion
Level sensor stagefrequency is divided to make amendment and compensate.Water level sensor of washing machine described in the utility model, it is simple in construction,
Manufacturing cost is low, can be when water level sensor of washing machine is rocked with washing machine, to the inductor wire of water level sensor of washing machine
The inductance value of circle is changed, effectively the frequency of oscillation of amendment oscillating circuit, is changed the frequency of level sensor, is finally reached and carries
High water level sensor controls precision, improves washing machine control performance.
Brief description of the drawings
Brief description is made to the content expressed by each accompanying drawing of this specification and the mark in figure below：
Fig. 1 is the front cross-sectional structural representation of water level sensor of washing machine described in the utility model；
Accompanying drawing acceptance of the bid note be respectively：1st, sensor housing；2nd, diaphragm of rubber；3rd, gas cavity；4th, magnetic core；5th, inductor wire
Circle；6th, movable steel ball；7th, spring；8th, capsule；9th, cavity；10th, nut；11st, control unit；12nd, computer board of washing machine.
Embodiment
Below against accompanying drawing, by the description to embodiment, to embodiment of the present utility model as involved
Mutual alignment and annexation, the effect of each several part and operation principle between the shape of each component, construction, each several part etc. make into
The detailed description of one step：
As shown in Figure 1, the utility model is a kind of water level sensor of washing machine, and described washing machine includes inner cylinder, outer
Cylinder, outer barrel is connected with air chamber, and described water level sensor of washing machine includes setting rubber in sensor housing 1, sensor housing 1
Barrier film 2, the gas cavity 3 of the side of diaphragm of rubber 2 is connected with air chamber, and the opposite side of diaphragm of rubber 2 sets and set around magnetic core 4, magnetic core 4
Put and movable steel ball 6 is also set up on inductance coil 5, magnetic core 4, movable steel ball 6 is located in sensor housing 1.Said structure, in laundry
When machine works, the air chamber of washing machine changes according to outer barrel water and causes air pressure change, so that air pressure is acted on by gas cavity
On diaphragm of rubber, so as to promote diaphragm of rubber to move up and down, diaphragm of rubber action drives magnetic core to move up and down, so, magnetic core
The electromagnetic wire of inductance coil is cut when mobile, so that drive the inductance value of inductance coil to change, the change feedback of inductance value
To computer board of washing machine, computer board of washing machine judges whether water level of washing machine reaches requirement position according to the signal of inductance value, such as
Fruit water level is not up to, then controls water valve to open, and is supplied water into washing machine, water level is improved, until reaching requirement position.And washing machine
Computer board judges water level of washing machine more than when requiring position, then control water valve is opened again, outwards row according to inductance value signal
Water, reduces water level, until reaching requirement water level position.Such structure, can effectively control water level of washing machine.And pass through activity
The setting of steel ball, when washing machine work produces vibration, the effect of vibration is sensed in the water level of washing machine on washing machine
On device, the tiny vibration of the movable steel ball in sensor shell body can be caused, the kinetic energy vibrated up and down is obtained to movable steel ball, led to
Crossing movable steel ball, different directions are rocked up and down, to cut the inductance coil magnetic line of force, so as to change the inductance of inductance coil
Amount, and the variable signal of inductance value is delivered to computer board of washing machine so that compensate elimination because washing machine internal level sensor by
Vibration cause frequency accuracy difference and beyond computer board of washing machine (IC) recognize less than frequency so that inductance coil is passed to
The signal of computer board of washing machine is modified, and improves the accuracy of signal, so as to improve water level sensor of washing machine acquisition
The accuracy of signal.When not sending vibration inside when washing machine works, then movable steel ball can only quietly stop at sensor
In housing, will not left and right teetertotter, will not cause level sensor frequency change.In most cases, washing machine is in washing
During can all cause different degrees of vibration, this different degrees of vibration is enough to give movable steel ball internally up and down
Rock.Said structure, small steel ball is movable in fixed environment, and movable steel ball is rocked up and down each time, can change water level
Sensor 0.2 ± 0.05KHz frequencies, can make amendment and compensate to partial level sensor stagefrequency.The utility model institute
The water level sensor of washing machine stated, it is simple in construction, can be when water level sensor of washing machine be rocked with washing machine, to washing machine
The inductance value of the inductance coil of level sensor is changed, effectively the frequency of oscillation of amendment oscillating circuit, changes level sensor
The frequency of device, is finally reached raising level sensor control precision, improves washing machine performance.Said structure so that washing machine
The use scope of level sensor is more extensive, and precision also integrally lifts 50%.
The edge position of described diaphragm of rubber 2 inside sensor housing 1 with being fixedly connected, in magnetic core 4 and diaphragm of rubber 2
Between position connect, spring 7 is also set up between magnetic core 4 and sensor housing 1.Said structure is set, and passes through the air pressure of gas cavity 3
Change so that diaphragm of rubber is subjected to displacement, and is acted on magnetic core, so that the nonlinear change of diaphragm of rubber 2 is transformed into magnetic
The linear displacement change of core 4, while playing damping action to the jitter phenomenon of magnetic core 4；The effect of magnetic core 4 is that magnetic is produced around
, change the inductance value of inductance coil by the movement above and below it, in such manner, it is possible to accurately obtain water level of washing machine change letter
Number, and the signal is fed back into computer board of washing machine in time, control water level of washing machine to adjust in real time by computer board of washing machine.
Also set up capsule 8 in described sensor housing 1, described magnetic core 4, movable steel ball 6, spring 7 are disposed as position
Structure in capsule 8, the suit of inductance coil 5 is arranged on capsule 8.Such structure, inductance coil is arranged on capsule, real
Existing stationary positioned, will not shake or come off in vibration of washing machine.
Cavity 9 is formed between described magnetic core 4 and sensor housing 1, water level sensor of washing machine is with the shake of washing machine
When moving and vibrating, movable steel ball 6 is configured to the structure in the internal vibration of cavity 9.The setting of cavity, can play restriction activity
The effect of the scope of activities of steel ball, so that movable steel ball can only shake when movable in the region acted to inductance coil
It is dynamic, so as to cut the inductance coil magnetic line of force, change the inductance value of inductance coil, and the variable signal of inductance value is delivered to washing machine
Computer board, compensation, which is eliminated, to be caused frequency accuracy difference because washing machine internal level sensor is vibrated and knows beyond computer board of washing machine
Not less than frequency.
Described movable steel ball 6 is in 9 internal vibration of cavity, and movable steel ball 6 is configured to constantly change the electricity of inductance coil 5
Sensibility reciprocal, so as to change the structure of the frequency of oscillation of the oscillating circuit of water level sensor of washing machine.Such structure, passes through movable steel
The vibrations of pearl are modified to the inductance value of inductance coil, and the amendment of inductance value causes the vibration electricity of water level sensor of washing machine
The change of the frequency of oscillation on road, the signal of frequency of oscillation change feeds back to computer board of washing machine again, computer board of washing machine further according to
The signal adjustment water level of washing machine of amendment.
The upper end of sensor housing 1 sets nut 10, and the lower end of spring 7 is resisted against the upper surface of magnetic core 4, and the upper end of spring 7 is supported
Lean against on nut 10, movable steel ball 6 is located in spring 7, when movable steel ball 6 vibrates, movable steel ball 6 is configured in spring 7
The structure of inner ring scope internal vibration.Such structure, spring can play position-limiting action to movable steel ball, and movable steel ball is in spring
Inner ring scope is vibrated, without colliding capsule and inductance coil, so as to be played a protective role to capsule and inductance coil, improves
The level sensor life-span.
Cavity 9 is formed between described magnetic core 4, spring 7 and nut 10, when described movable steel ball 6 vibrates, movable steel ball
6 are configured to the structure in the scope internal vibration of cavity 9.
Control unit 11 is also set up in described sensor housing 1, inductance coil 5 is connected with control unit 11, inductor wire
Circle 5 is configured to the structure to the feedback inductance amount variable signal of control unit 11.
Described control unit 11 and computer board of washing machine 12, control unit 11 are configured to computer board of washing machine 12
The structure of the frequency of oscillation variable signal of the oscillating circuit of feedback control components 11.
Described computer board of washing machine 12 is configured to the frequency of oscillation of the oscillating circuit fed back according to control unit 11
Variable signal adjusts the structure of water level of washing machine height.
Such structure, when the inductance value of inductance coil changes under the effect of movable steel ball, inductance value change letter
The oscillating circuit of Confucius's part number is fed back to, the oscillator signal of oscillating circuit changes with the signal that inductance value changes, then will
The signal Feedback for Washing computer board of oscillator signal change, computer board of washing machine is washed further according to the change regulation of oscillation frequency signal
Clothing machine water level height, so as to reach the accurate control to water level.
Water level sensor of washing machine described in the utility model, when washing machine works, the air chamber of washing machine is according to outer barrel
Water changes and causes air pressure change, so that air pressure is acted on diaphragm of rubber by gas cavity, so as to promote diaphragm of rubber
Move up and down, diaphragm of rubber action drives magnetic core to move up and down, so, and the electromagnetic wire of inductance coil is cut when magnetic core is moved, from
And driving the inductance value of inductance coil to change, the change of inductance value feeds back to computer board of washing machine, computer board of washing machine root
According to the signal of inductance value, judge whether water level of washing machine reaches requirement position, if water level is not up to, control water valve is opened,
Supplied water into washing machine, water level is improved, until reaching requirement position.And computer board of washing machine judges to wash according to inductance value signal
Clothing machine water level is more than when requiring position, then control water valve is opened again, and outside draining reduces water level, until reaching requirement water level
Position.Such structure, can effectively control water level of washing machine.And by the setting of movable steel ball, work and produce in washing machine
During vibration, the effect of vibration can cause the work in sensor shell body on the water level sensor of washing machine on washing machine
The dynamic tiny vibration of steel ball, the kinetic energy vibrated up and down to the acquisition of movable steel ball passes through movable steel ball different directions up and down
Rock, to cut the inductance coil magnetic line of force, so as to change the inductance value of inductance coil, and the variable signal of inductance value is delivered to
Computer board of washing machine, so that compensating elimination causes frequency accuracy difference because washing machine internal level sensor is vibrated and beyond laundry
Machine computer board (IC) identification less than frequency so that the signal that inductance coil passes to computer board of washing machine is modified,
The accuracy of signal is improved, so as to improve the accuracy that water level sensor of washing machine obtains signal.When washing machine works
Inside is not when sending vibration, then movable steel ball can only be stopped at quietly in sensor shell body, will not left and right teetertotter, will not
Level sensor frequency is caused to change.In most cases, washing machine can all cause different degrees of vibration in washing process,
This different degrees of vibration is enough to give movable steel ball internally rocks up and down.Said structure, small steel ball is fixed
Movable in environment, movable steel ball is rocked up and down each time, can change level sensor 0.2 ± 0.05KHz frequencies, can be to portion
Level sensor stagefrequency is divided to make amendment and compensate.Water level sensor of washing machine described in the utility model, it is simple in construction,
Manufacturing cost is low, can be when water level sensor of washing machine is rocked with washing machine, to the inductor wire of water level sensor of washing machine
The inductance value of circle is changed, effectively the frequency of oscillation of amendment oscillating circuit, is changed the frequency of level sensor, is finally reached and carries
High water level sensor controls precision, improves washing machine control performance.
Exemplary description is carried out to the utility model above in conjunction with accompanying drawing, it is clear that the utility model concrete implementation is simultaneously
Do not limited by aforesaid way, if the various improvement that method design of the present utility model and technical scheme are carried out are employed, or
It is not improved that design of the present utility model and technical scheme are directly applied into other occasions, in protection of the present utility model
In the range of.
Claims (7)
1. a kind of water level sensor of washing machine, described washing machine includes inner cylinder, outer barrel, outer barrel is connected with air chamber, and its feature exists
In：Described water level sensor of washing machine includes setting diaphragm of rubber (2), rubber in sensor housing (1), sensor housing (1)
The gas cavity (3) of glue barrier film (2) side is connected with air chamber, and diaphragm of rubber (2) opposite side is set around magnetic core (4), magnetic core (4)
Set and movable steel ball (6) is also set up on inductance coil (5), magnetic core (4), movable steel ball (6) is located in sensor housing (1).
2. water level sensor of washing machine according to claim 1, it is characterised in that：The edge of described diaphragm of rubber (2)
Position inside sensor housing (1) with being fixedly connected, and magnetic core (4) is connected with diaphragm of rubber (2) middle part, and magnetic core (4) is with passing
Spring (7) is also set up between sensor housing (1).
3. water level sensor of washing machine according to claim 2, it is characterised in that：In described sensor housing (1) also
Capsule (8) is set, and described magnetic core (4), movable steel ball (6), spring (7) are disposed as the structure being located in capsule (8), inductance
Coil (5) suit is arranged on capsule (8).
4. water level sensor of washing machine according to claim 1, it is characterised in that：Described magnetic core (4) and sensor shell
Cavity (9), when described water level sensor of washing machine vibrates with the vibrations of washing machine, movable steel ball are formed between body (1)
(6) it is configured to the structure in cavity (9) internal vibration.
5. water level sensor of washing machine according to claim 4, it is characterised in that：Described movable steel ball (6) is in cavity
(9) during internal vibration, movable steel ball (6) is configured to constantly change inductance coil (5) inductance value, so as to change water level of washing machine
The structure of the frequency of oscillation of the oscillating circuit of sensor.
6. water level sensor of washing machine according to claim 2, it is characterised in that：Sensor housing (1) upper end is set
Nut (10) is put, spring (7) lower end is resisted against magnetic core (4) upper surface, and spring (7) upper end is resisted against on nut (10), movable steel
Pearl (6) is located in spring (7), and during movable steel ball (6) vibration, movable steel ball (6) is configured in the range of spring (7) inner ring
The structure of vibration.
7. water level sensor of washing machine according to claim 6, it is characterised in that：Described magnetic core (4), spring (7) and
Cavity (9) is formed between nut (10), when described movable steel ball (6) vibrates, movable steel ball (6) is configured in cavity
(9) structure of scope internal vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621256258.9U CN206531545U (en) | 2016-11-23 | 2016-11-23 | Water level sensor of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621256258.9U CN206531545U (en) | 2016-11-23 | 2016-11-23 | Water level sensor of washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206531545U true CN206531545U (en) | 2017-09-29 |
Family
ID=59921699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621256258.9U Active CN206531545U (en) | 2016-11-23 | 2016-11-23 | Water level sensor of washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206531545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525197A (en) * | 2016-11-23 | 2017-03-22 | 芜湖乐佳电器有限公司 | Washing-machine water level sensor |
-
2016
- 2016-11-23 CN CN201621256258.9U patent/CN206531545U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525197A (en) * | 2016-11-23 | 2017-03-22 | 芜湖乐佳电器有限公司 | Washing-machine water level sensor |
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