CN1683643A - Water quality sensor of washing machine - Google Patents
Water quality sensor of washing machine Download PDFInfo
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- CN1683643A CN1683643A CN 200410018962 CN200410018962A CN1683643A CN 1683643 A CN1683643 A CN 1683643A CN 200410018962 CN200410018962 CN 200410018962 CN 200410018962 A CN200410018962 A CN 200410018962A CN 1683643 A CN1683643 A CN 1683643A
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Abstract
The water quality sensor of washing machine includes casing, electrode sensor and power source. The casing is set inside an air chamber in the place of washing tank where the washing water can flow in; the electrode sensor has one pair of electrodes exposed in the washing water to detect the conductivity of washing water; and the power source powers the electrode sensor. The present invention features the switch unit and the switch unit is set between the power source and the electrode sensor to alter the power source direction and the polarity of the electrodes. The polarity altering can release charged matter collected to the electrodes so as to raise the reliability of the electrode sensor.
Description
Technical field
The present invention relates to washing machine, relate in particular to its water quality sensing device.
Background technology
As shown in Figure 1, existing washing machine includes following structure: casing (CASE) (2), sink (4), drive division (16), water supply installation (6) and drainage arrangement (8).
Above-mentioned casing (2) forms the outward appearance of washing machine, and casing (2) open upper side is provided with top cover (COVER) (1); Above-mentioned sink (4) can be rotatably set in the inside of above-mentioned casing (2), is used to carry out the washing of washings; Above-mentioned drive division (16) is used to rotate sink (4); Above-mentioned water supply installation (6) is used for to sink (4) supplying washing water; Above-mentioned drainage arrangement (8) is used to discharge the washings in the sink (4).
The central authorities of above-mentioned top cover (1) are formed with gateway (1a), put in the sink (4) washings or taking-up by above-mentioned gateway (1a); The central authorities of above-mentioned top cover (1) are equipped with the door (10) that is used to open and close gateway (1a).The place ahead of above-mentioned top cover (1) is equipped with controller (CONTROLLER) (12), and the user is by controller (12) input washing function or cognitive washing executing state.
Above-mentioned sink (4) is made of water jacket (4a) and inside groove (4b).Above-mentioned water jacket (4a) is suspended on the inside of above-mentioned casing (2) by sprung parts (14); Above-mentioned inside groove (4b) can be rotatably set in the inside of above-mentioned water jacket (4a), is connected with drive division (16) by rotating shaft (15), is formed with a plurality of washings access holes (4c) on every side, and can stacks washings.
Below, the work of prior art washing machine with said structure is described.
At first, after the user puts into washings in the above-mentioned sink (4), set desirable washing mode (PATTERN) by above-mentioned controller (12), washing agent and washings are fed in the above-mentioned sink (4) together, make above-mentioned sink (4) rotation carry out the washing of washings then.
At this moment, the spot on the washings is removed in the friction of the current that produce of the rotation of the chemical action by washing agent and washings and above-mentioned sink (4).
Afterwards,, then discharge the washings of above-mentioned sink (4), in sink (4), after the supplying washing water, driving the rinsing that above-mentioned sink (4) is carried out washings again when the washing of finishing washings; When the rinsing of finishing washings, then discharge the washings of above-mentioned sink (4) after, make at a high speed rotation of above-mentioned sink (4), after the centrifugal force that the high speed rotation by above-mentioned sink (4) produces is carried out the dehydration of washings, finish washing.
On the one hand, the outer lower portion of above-mentioned water jacket (4a) is provided with air chamber (AIR CHAMBER) (18), be formed with the access hole (18a) that the washings that can make above-mentioned sink (4) flow on the above-mentioned air chamber (18), the water level of the washings in can the above-mentioned sink of perception (4).The downside of above-mentioned air chamber (18) is provided with water quality sensing device (20), and above-mentioned water quality sensing device (20) is used to measure the water quality of the washings in the above-mentioned sink (4).
As depicted in figs. 1 and 2, above-mentioned water quality sensing device (20) includes following structure: casing (22), electrode sensor (24), temperature sensor (26), portion of terminal (28) and power suppling part (not shown).
Said machine casing (22) is inserted in the bottom surface of above-mentioned air chamber (18) opening, and the outside of casing (22) is outstanding to be formed with ring flange (21), (FLANGE), can use bolt (BOLT) secure bond on above-mentioned air chamber (18); (24a 24b) constitutes above-mentioned electrode sensor (24), and (24a 24b) is used for perception washing electrical conductivity of water to an above-mentioned bipolar electrode by giving prominence to a bipolar electrode at said machine casing (22) upside; Said temperature sensor (26) is given prominence to the upside in said machine casing (22), is used for the temperature of perception washings; Above-mentioned portion of terminal (28) is arranged on the bottom of said machine casing (22), and above-mentioned electrode sensor (24) and temperature sensor (26) and above-mentioned controller (12) are continued; Above-mentioned power suppling part by above-mentioned portion of terminal (28) with the power supply folk prescription to being supplied to above-mentioned electrode sensor (24) and temperature sensor (26) respectively.
After above-mentioned controller (12) is received washing electrical conductivity of water and temperature information respectively by above-mentioned electrode sensor (24) and temperature sensor (26), then converse hardness of washing water, set washing methods according to the water quality of measuring washings by the certain program (PROGRAM) that has configured.
But there is following shortcoming in the existing washing machine with said structure:
In existing washing machine, when carrying out washing, in the washings owing to include the iron rust of running water comb and the rotten generation of water supply hose (HOSE) or foreign substances or the washing agent that drops from washings.So, make an above-mentioned bipolar electrode (24a if apply power supply to above-mentioned electrode sensor (24), form electric field 24b), then be hydrolyzed by the above-mentioned iron rust of washings and foreign substances and washing agent, at this moment above-mentioned foreign substances by electrical affinity respectively aggegation the electrode of above-mentioned electrode sensor (24) (24a, 24b) on, influence is formed on an above-mentioned bipolar electrode (24a, electric field 24b) causes correctly measuring the washing electrical conductivity of water.
Particularly, in the prior art, magnesium ion of the iron powder of hydrolysis and hydrolysis from washing agent (MAGNEMITE ION) and calcium ion (CALCIUM ION) are cations from above-mentioned iron rust; Owing to imposing on above-mentioned electrode, cause more foreign substances to continue aggegation on negative electrode on the power supply folk prescription.
Summary of the invention
In order to overcome the above-mentioned shortcoming that existing water quality sensing device exists, the invention provides a kind of water quality sensing device of washing machine, it can prevent the foreign substances aggegation on the electrode of electrode sensor, improves the reliability to the conductance measurement of washings.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of water quality sensing device of washing machine, comprise casing, electrode sensor, power suppling part, casing is arranged on the outside of sink, be arranged in the air chamber of the washings inflow that can make sink, one bipolar electrode of electrode sensor is given prominence to the upside at casing, expose in washings, be used for measuring the washing electrical conductivity of water; Power suppling part is used for to electrode sensor supply power supply; It is characterized in that it also comprises switch portion; Described switch portion is arranged between described power suppling part and the electrode sensor, is used for the switched power supply direction, polarity that can the described bipolar electrode of conversion.
The water quality sensing device of aforesaid washing machine, wherein switch portion is passed through the periodically polarity of the described bipolar electrode of conversion of microcomputer.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the side direction sectional drawing of existing washing machine.
Fig. 2 is the stereogram of existing water quality sensing device.
Fig. 3 is the stereogram of water quality sensing device of the present invention.
Fig. 4 a is the power supply circuit figure of the electrode sensor of washing machine of the present invention.
Fig. 4 b is the power supply circuit figure of the electrode sensor of washing machine of the present invention.
The number in the figure explanation:
52: casing (HOUSING) 54: electrode sensor (SENSOR)
56: power suppling part 58: temperature sensor
60: switch (SWITCH) portion
The specific embodiment
Shown in Fig. 3, Fig. 4 a, Fig. 4 b, the water quality sensing device of washing machine of the present invention includes following structure: casing (52), electrode sensor (54), power suppling part (56), switch portion (60) and temperature sensor (58).
Said machine casing (52) is arranged on the outer lower portion of sink, is inserted in the opening bottom surface of the space (not shown) of the washings inflow that can make above-mentioned sink; One bipolar electrode of above-mentioned electrode sensor (54) (54a 54b) gives prominence to upside in said machine casing (52), dew retting in washings, perception washing electrical conductivity of water behind the power supply that obtains applying; Above-mentioned power suppling part (56) is used for to above-mentioned electrode sensor (54) supply power supply; Above-mentioned switch portion (60) is arranged between above-mentioned power suppling part (56) and the electrode sensor (54), is used for the switched power supply direction, can the above-mentioned bipolar electrode of conversion (54a, polarity 54b); Said temperature sensor (58) is given prominence to the upside in said machine casing (58), exposes in washings the temperature of perception washings behind the power supply that obtains individually separately applying with above-mentioned electrode sensor (54).
Above-mentioned power suppling part (56) is made of rectifier and transformer.Above-mentioned rectifier will be rectified into dc source according to the 110V of the national conditions supply of our country or the AC power of 220V; The certain voltage that above-mentioned transformer becomes above-mentioned electrode sensor (54) to accommodate the dc source transformation of rectification.
Above-mentioned switch portion (60) includes following structure: the 1st electric wire (61), the 2nd electric wire (62), the 3rd electric wire (63), the 4th electric wire (64), the 5th electric wire (65), the 6th electric wire (66), the 1st switch (67) and the 2nd switch (68).
Above-mentioned the 1st electric wire (61) and the 2nd electric wire (62) are connected to the both sides of above-mentioned voltage supply department (56); Above-mentioned the 3rd electric wire (63) and the 4th electric wire (64) are connected to the both sides of above-mentioned electrode sensor (54); Above-mentioned the 5th electric wire (65) is connected with the 4th electric wire (64) with above-mentioned the 3rd electric wire (63) respectively with the 6th electric wire (66); Above-mentioned the 1st switch (67) optionally makes above-mentioned the 1st electric wire (61) is connected with above-mentioned the 3rd electric wire (63) or the 6th electric wire (66); Above-mentioned the 2nd switch (68) optionally makes above-mentioned the 2nd electric wire (62) is connected with above-mentioned the 4th electric wire (64) or the 5th electric wire (65).So, along with the work of above-mentioned the 1st switch (67) and the 2nd electric wire (68), the power supply supplier that can change above-mentioned electrode sensor (54) to, can switch an above-mentioned bipolar electrode (54a, polarity 54b).
Particularly, preferably control the opening of above-mentioned the 1st switch (67) and the 2nd electric wire (68) (ON)/close (OFF) work by microcomputer (MICON) (not shown) that is built-in with autotimer (TIMER) (not shown), make the power supply supplier that can periodically change above-mentioned electrode sensor (54) to.In addition, in said structure, can make above-mentioned the 1st switch (67) and the 2nd electric wire (68) carry out conversion work simultaneously by microcomputer.
In addition, above-mentioned microcomputer refers to the work for automatically controlled general washing machine, is arranged on the microcomputer on the washing machine.Above-mentioned microcomputer electrically connects with above-mentioned electrode sensor (54) and temperature sensor (56) respectively, according to the water quality of washing electrical conductivity of water and temperature measuring washings.
In the water quality sensing device of washing machine with said structure, if apply power supply to above-mentioned electrode sensor (54) and temperature sensor (58) respectively, then can make a bipolar electrode (54a of above-mentioned electrode sensor (54), form electric field 54b), according at an above-mentioned bipolar electrode (54a, perception electricity conducting whether swimmingly in washings 54b), perception washing electrical conductivity of water; Temperature by said temperature sensor (58) perception washings.Then, the said sensed result is passed to above-mentioned microcomputer, the certain program that has configured in the at this moment above-mentioned microcomputer then can be measured the water quality of washings according to washing electrical conductivity of water and temperature conversion hardness of washing water.
Wherein, the power supply supplier who periodically changes above-mentioned electrode sensor (54) by above-mentioned switch portion (60) to.
That is to say, shown in Fig. 4 a, if above-mentioned the 1st switch (67) makes the 1st electric wire (61) be connected with the 3rd dotted line (63), above-mentioned the 2nd switch (68) makes the 2nd electric wire (62) be connected with the 4th electric wire (64), then power supply by above-mentioned the 1st electric wire (61), the 3rd electric wire (63), electrode sensor (54), the 4th electric wire (64) and the 2nd electric wire (62), is supplied to above-mentioned electrode sensor (54) along arrow Q direction with power supply successively.On the contrary, shown in Fig. 4 b, if above-mentioned the 1st switch (67) makes the 1st electric wire (61) be connected with the 6th electric wire (66), above-mentioned the 2nd switch (68) makes the 2nd electric wire (62) be connected with the 5th electric wire (65), then power supply by above-mentioned the 1st electric wire (61), the 6th electric wire (66), electrode sensor (54), the 3rd electric wire (63) and the 5th electric wire (65), is supplied to above-mentioned electrode sensor (54) along the arrow P direction with power supply successively.
So, since the power supply supplier that can change above-mentioned electrode sensor (54) to, above-mentioned each the electrode (54a of conversion, polarity 54b), even the foreign substances with polarity is by the electrode (54a of electrical affinity difference aggegation at above-mentioned electrode sensor (54), 54b), the conversion above-mentioned electrode sensor (54) the power supply supplier to the time, by electrode (54a,) and the electric field force of electrode (54b) can disengage aggegation at above-mentioned each electrode (54a, foreign substances 54b), make foreign substances aggegation for a long time the electrode of above-mentioned electrode sensor (54) (54a, 54b) on.
The effect of invention
The water quality sensing device of washing machine provided by the invention can bring following effect.
In the water quality sensing device of washing machine of the present invention, impose on electrode owing to can periodically change The power supply supplier of sensor to, the polarity of the above-mentioned bipolar electrode of conversion periodically is even have The foreign substances of polarity on electrode, also can be passed through reversed electric field power from electricity by electrical affinity aggegation again Disengage foreign substances extremely, so can prevent from hindering the foreign substances aggegation of conduction on electrode. Thereby improve The reliability of electrode sensor.
Claims (2)
1, a kind of water quality sensing device of washing machine comprises casing, electrode sensor, power suppling part,
Casing is arranged on the outside of sink, is arranged in the air chamber of the washings inflow that can make sink, and a bipolar electrode of electrode sensor is given prominence to the upside at casing, exposes in washings, is used for measuring the washing electrical conductivity of water; Power suppling part is used for to electrode sensor supply power supply;
It is characterized in that it also comprises switch portion;
Described switch portion is arranged between described power suppling part and the electrode sensor, is used for the switched power supply direction, polarity that can the described bipolar electrode of conversion.
2, the water quality sensing device of washing machine according to claim 1 is characterized in that described switch portion is by the microcomputer polarity of the described bipolar electrode of conversion periodically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410018962 CN1683643A (en) | 2004-04-12 | 2004-04-12 | Water quality sensor of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410018962 CN1683643A (en) | 2004-04-12 | 2004-04-12 | Water quality sensor of washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1683643A true CN1683643A (en) | 2005-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410018962 Pending CN1683643A (en) | 2004-04-12 | 2004-04-12 | Water quality sensor of washing machine |
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| Country | Link |
|---|---|
| CN (1) | CN1683643A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918595A (en) * | 2018-04-28 | 2018-11-30 | 芜湖美的厨卫电器制造有限公司 | A kind of water quality detecting device, storage-type electric water heater and water quality detection method |
-
2004
- 2004-04-12 CN CN 200410018962 patent/CN1683643A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918595A (en) * | 2018-04-28 | 2018-11-30 | 芜湖美的厨卫电器制造有限公司 | A kind of water quality detecting device, storage-type electric water heater and water quality detection method |
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