CN113005719A - Water level detection device and pulsator washing machine - Google Patents
Water level detection device and pulsator washing machine Download PDFInfo
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- CN113005719A CN113005719A CN202110175098.4A CN202110175098A CN113005719A CN 113005719 A CN113005719 A CN 113005719A CN 202110175098 A CN202110175098 A CN 202110175098A CN 113005719 A CN113005719 A CN 113005719A
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- 238000005406 washing Methods 0.000 title claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 239000000725 suspension Substances 0.000 claims abstract description 57
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000005484 gravity Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 238000005339 levitation Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000010412 laundry washing Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/22—Condition of the washing liquid, e.g. turbidity
-
- 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
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
The invention provides a water level detection device and a pulsator washing machine, relates to the technical field of washing machines, and provides a novel water level detection device suitable for a washing machine with a single-cylinder structure. The device comprises a suspension channel, a suspension magnetic ball, a magnetic ball dividing ruler and a signal acquisition structure, wherein the suspension channel is arranged on a washing barrel and communicated with the inside of the washing barrel, and the suspension channel is internally provided with the suspension magnetic ball which can float on the water surface of the suspension channel; the outer barrel outside the washing barrel is provided with a magnetic ball dividing ruler, a plurality of magnetic balls are distributed on the magnetic ball dividing ruler, when the height of the suspended magnetic ball changes along with the height of the liquid level in the suspended channel, the suspended magnetic ball can adsorb the magnetic ball at the corresponding position so as to change the position of the magnetic ball, and the signal acquisition structure can acquire the information of the magnetic ball which changes in position on the magnetic ball dividing ruler. The invention utilizes the mutual attraction of the magnetic small balls and the counting by the photosensitive sensor to reflect the water quantity condition in the washing cylinder, and has novel structure.
Description
Technical Field
The invention relates to the technical field of washing machines, in particular to a water level detection device and a pulsator washing machine with the same.
Background
With the progress of science and technology, the automation level of human life is higher and higher, and daily housework is gradually replaced by machines from manpower. The clothes washing equipment is used as a common household appliance in daily life, and brings great convenience to the life of people.
Laundry washing apparatuses are classified according to washing methods, and may be roughly classified into pulsator washing machines and drum washing machines. In the prior art, a washing machine detects the water level in a washing drum through a capacitive liquid level sensor, wherein the capacitive liquid level sensor has the detection principle of detecting the water pressure in the washing drum, the water pressure pushes the position of a magnetic core in an indirect capacitive liquid level sensor in a coil to change the inductance value, signals with different frequencies are generated through an LC oscillating circuit, and the water level in the washing drum is determined according to the corresponding relation between the frequency signal value and the water level.
In the detection process, because the signal output by the indirect capacitance liquid level sensor is in nonlinear change, the input and output signals are stable only under a certain pressure, so that the detection result of the capacitance liquid level sensor is not very accurate. In addition, the capacitive liquid level sensor is not suitable for a washing machine with a single-cylinder structure.
The flow is calculated by arranging the flow valve at the water inlet of the washing machine so as to control the water level in the washing drum, the flow is influenced by the water pressure of the water used by residents, the numerical value is calculated more accurately when the water pressure is higher, and the deviation of the numerical value is larger under the condition that the water pressure is lower.
Disclosure of Invention
The invention aims to provide a water level detection device and a pulsator washing machine provided with the same, and provides a novel water level detection device suitable for a washing machine with a single-cylinder structure. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a water level detection device which comprises a suspension channel, a suspension magnetic ball, a magnetic ball dividing ruler and a signal acquisition structure, wherein the suspension channel is arranged on a washing barrel and communicated with the inside of the washing barrel, the suspension magnetic ball is arranged in the suspension channel, and can float on the water surface of the suspension channel; the outer barrel outside the washing barrel is provided with the magnetic ball dividing ruler, a plurality of magnetic balls are distributed on the magnetic ball dividing ruler, when the height of the suspended magnetic ball changes along with the height of the liquid level in the suspended channel, the suspended magnetic ball can adsorb the magnetic ball at the corresponding position to change the position of the magnetic ball, and the signal acquisition structure can acquire the information of the magnetic ball with the position changed on the magnetic ball dividing ruler.
Further, the magnetic balls are distributed along the height direction of the magnetic ball dividing ruler, the magnetic ball dividing ruler comprises moving channels, each magnetic ball corresponds to one moving channel, the magnetic balls move towards the direction close to the suspended magnetic balls along the moving channels under the adsorption effect of the suspended magnetic balls, and the magnetic balls can reset under the action of self gravity.
Further, the signal acquisition structure comprises a photosensitive sensor and a light source, and when the magnetic ball is located on the moving channel and close to the suspended magnetic ball, the magnetic ball can shield light emitted by the light source to block the photosensitive sensor from detecting the signal of the light source.
Furthermore, the magnetic balls are distributed at intervals along the height direction of the magnetic ball dividing ruler, and the distance between every two adjacent magnetic balls can meet the requirement that the magnetic balls can intermittently shield the light source.
Further, the signal acquisition structure comprises a light tunnel, and the light source is positioned in the light tunnel; the magnetic ball scale comprises a guide cylinder, wherein the movable channel is formed in the guide cylinder, one end of the guide cylinder is inserted into the light path, and at least the part of the guide cylinder inserted into the light path is made of transparent materials.
Further, the photosensitive sensor is arranged on a top cover of the washing machine matched with the washing drum, and the photosensitive sensor is positioned right above the light source.
Furthermore, the water level detection device also comprises a control structure, the signal acquisition structure is connected with the control structure, the control structure can receive the information of the signal acquisition structure, and the control structure is used for controlling the water level in the washing drum.
Further, the magnetic ball dividing ruler is arranged on the outer barrel at a position close to the suspension channel, and the moving channel inclines obliquely upwards along the direction from the outer side of the outer barrel to the inner side of the outer barrel.
Further, the shape of suspension passageway is cylindric and the circumference lateral wall of suspension passageway can restrict the suspension magnetic ball moves along the horizontal direction.
Furthermore, a chip filtering plate assembly is arranged on the washing drum, and the suspension channel is located in the chip filtering plate assembly.
A washing machine comprises the water level detection device.
Further, the washing machine is a single-drum impeller washing machine.
The water level detection device provided by the invention has the advantages that when the height of the suspended magnetic ball changes along with the height of the liquid level in the suspension channel, the suspended magnetic ball can adsorb the magnetic ball at the corresponding position (namely the corresponding height) to change the position of the magnetic ball, the signal acquisition structure can acquire the information of the magnetic ball with the changed position on the magnetic ball scale, and the situation of the water level in the washing drum is reflected through the position change of the magnetic balls with different heights on the magnetic ball scale, so that the water level detection device is suitable for a washing machine with a single-drum structure.
The preferred technical scheme of the invention can at least produce the following technical effects:
the signal acquisition structure includes photosensitive sensor and light source, when there is the magnetism ball to be located the position that is close to suspension magnetism ball on the removal passageway on, this magnetism ball can shelter from the signal of light that the light source sent in order to block photosensitive sensor detection light source, when suspension magnetism ball is along with the continuous rising of the water level in the suspension passageway, suspension magnetism ball constantly adsorbs the magnetism ball that corresponds the position, through the number of times of gathering the light source and sheltered from by the magnetism ball, can realize the collection to water level signal in the washing section of thick bamboo, the different number of times of sheltering from corresponds the different water level volume in the washing section of thick bamboo promptly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a single-drum pulsator washing machine according to an embodiment of the present invention;
FIG. 2 is a partial enlarged view A of FIG. 1;
fig. 3 is a schematic structural diagram of a magnetic sphere scale according to an embodiment of the present invention.
FIG. 1-suspension channel; 2-a suspended magnetic ball; 3-magnetic sphere scale; 301-a magnetic ball; 302-moving the channel; 303-a guide cylinder; 4-a washing drum; 5-outer cylinder; 6-a photosensitive sensor; 7-a light source; 8-optical channel; 9-a crumb filter assembly; 10-a balancing ring; 11-a wave wheel; 12-motor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1-3, the invention provides a water level detection device, which comprises a suspension channel 1, a suspension magnetic ball 2, a magnetic ball scale 3 and a signal acquisition structure, wherein the suspension channel 1 is arranged on a washing cylinder 4 and communicated with the inside of the washing cylinder 4, when the water level in the washing cylinder 4 reaches a certain height, water in the washing cylinder 4 can flow into the suspension channel 1, the water level in the washing cylinder 4 is consistent with the water level in the suspension channel 1, the suspension magnetic ball 2 is arranged in the suspension channel 1, the suspension magnetic ball 2 can float on the water surface of the suspension channel 1, and the suspension magnetic ball 2 is a small ball with certain magnetism; the outer barrel 5 outside the washing barrel 4 is provided with the magnetic ball dividing ruler 3, the magnetic ball dividing ruler 3 is provided with a plurality of magnetic balls 31, when the height of the suspended magnetic ball 2 changes along with the height of the liquid level in the suspended channel 1, the suspended magnetic ball 2 can adsorb the magnetic ball 31 at the corresponding position (namely, the corresponding height) so as to change the position of the magnetic ball 31, the signal acquisition structure can acquire the information of the magnetic ball 31 at the position changed on the magnetic ball dividing ruler 3, the position change of the magnetic ball 31 at different heights on the magnetic ball dividing ruler 3 can reflect the condition of the water level inside the washing barrel 4, and the water level detection device suitable for the washing machine with the single-barrel structure is provided. The signal collecting structure can collect the water level inside the washing drum 4 by collecting the number of the magnetic balls 31 with position change.
In addition, the floating magnetic ball 2 may float on the water surface and have magnetism. For example, the outer part of the levitating magnetic ball 2 may be made of a magnetic material, and the inner part of the levitating magnetic ball 2 may be made of a material with a small density, so that the levitating magnetic ball 2 can float on the water surface.
As an alternative implementation of the embodiment of the present invention, the structure of the magnetic sphere scale 3 may be as follows: magnetic ball 31 distributes along the direction of height of magnetic ball scale 3, and magnetic ball scale 3 includes removal channel 32, and every magnetic ball 31 all corresponds one removal channel 32, and magnetic ball 31 moves to the direction that is close to suspension magnetic ball 2 along removal channel 32 under the adsorption of suspension magnetic ball 2, and magnetic ball 31 can reset under the action of self gravity. When the levitated magnetic ball 2 approaches the corresponding magnetic ball 31, the magnetic attraction between the levitated magnetic ball 2 and the magnetic ball 31 overcomes the gravity of the magnetic ball 31, so that the magnetic ball 31 moves toward the direction approaching the levitated magnetic ball 2, and when the magnetic attraction between the levitated magnetic ball 2 and the magnetic ball 31 is reduced to a certain value or disappears, the magnetic ball 31 is reset under the action of the gravity. When the magnetic ball 31 moves to a position close to the levitating magnetic ball 2, the signal acquisition structure acquires a position signal of the magnetic ball 31.
The specific structure of the signal acquisition structure may be as follows: the signal acquisition structure comprises a photosensitive sensor 6 and a light source 7, and when the magnetic ball 31 is positioned on the moving channel 32 close to the suspended magnetic ball 2, the magnetic ball 31 can shield the light emitted by the light source 7 to block the photosensitive sensor 6 from detecting the signal of the light source 7. Specifically, magnetic ball 31 is along magnetic ball scale 3's direction of height interval distribution, and the interval between two adjacent magnetic balls 31 can satisfy magnetic ball 31 and can be interrupted and shelter from light source 7, like this, when suspension magnetic ball 2 is along with the continuous rise of the water level in the suspension passageway 1, suspension magnetic ball 2 constantly adsorbs magnetic ball 31 corresponding to the position, through the number of times of gathering light source 7 and sheltering from by magnetic ball 31, can realize the collection to water level signal in the washing section of thick bamboo 4, the different number of times of sheltering from corresponds the different water level volume in the washing section of thick bamboo 4 promptly.
Of course, the intervals of the magnetic balls 31 in the height direction of the magnetic ball scale 3 may be set as follows: magnetic ball 31 is along the direction of height interval distribution of magnetic ball scale 3, and the interval between two adjacent magnetic balls 31 can satisfy magnetic ball 31 and can shelter from light source 7 in succession, like this, when suspension magnetic ball 2 is along with the continuous rising of the water level in the suspension passageway 1, can be through gathering the long condition of time that light source 7 is sheltered from by magnetic ball 31 to the different water level volume in corresponding washing section of thick bamboo 4.
Regarding the positional relationship between the signal acquisition structure and the magnetic sphere scale 3, the following can be mentioned: the signal acquisition structure comprises a light channel 8, a light source 7 is positioned in the light channel 8, light rays emitted by the light source 7 are transmitted in the light channel 8, a photosensitive sensor 6 is positioned right above the light source 7, and the photosensitive sensor 6 can be arranged on a top cover of the washing machine matched with the washing drum 4; the magnetic sphere scale 3 comprises a guide cylinder 33, a moving channel 32 is formed in the guide cylinder 33, referring to fig. 2, the guide cylinder 33 is schematically shown, one end of the guide cylinder 33 is inserted into the light path 8, and at least the part of the guide cylinder 33 inserted into the light path 8 is made of a transparent material, that is, the guide cylinder 33 does not block the light emitted by the light source 7 from being emitted to the photosensor 6. When the magnetic ball 31 moves to the end of the guide cylinder 33 at the insertion light path 8 by the floating magnetic ball 2, the magnetic ball 31 will block the light emitted from the light source 7 to the photosensitive sensor 6.
In order to realize the combined action of the magnetic force and the gravity of the magnetic ball 31, the structure of the moving channel 32 is as follows: the magnetic ball scale 3 is arranged on the outer cylinder 5 near the floating passage 1, and referring to fig. 1, the position relationship between the magnetic ball scale 3 and the floating passage 1 is shown, and the moving passage 32 is inclined obliquely upwards along the direction from the outer side of the outer cylinder 5 to the inner side of the outer cylinder 5. Referring to fig. 2, a tilted moving path 32 is illustrated, and when there is no magnetic attraction force between the magnetic ball 31 and the levitating magnetic ball 2, the magnetic ball 31 is located at a lower side of the moving path 32 (i.e., at a side away from the levitating magnetic ball 2).
As an optional implementation manner of the embodiment of the present invention, the water level detecting device further includes a control structure, the signal collecting structure is connected to the control structure, the photosensitive sensor 6 of the signal collecting structure is connected to the control structure, the control structure can receive information of the signal collecting structure, and the control structure is used for controlling the water level in the washing tub 4. The information of the photosensitive sensor 6 is fed back to the control structure in real time, and when the water level information in the washing drum 4 acquired by the signal acquisition structure reaches a preset water level required value, the control structure can control the valve body on the water faucet to stop injecting water into the washing drum 4.
As an alternative embodiment of the present invention, the levitation channel 1 is cylindrical, and the circumferential sidewall of the levitation channel 1 can limit the levitation magnetic ball 2 from moving in the horizontal direction, i.e. the levitation magnetic ball 2 can only move in the vertical direction. Referring to fig. 1, a debris filter assembly 9 is provided on the washing drum 4, and the suspension passage 1 is preferably located in the debris filter assembly 9.
A washing machine includes the water level detection device provided by the invention. The water level detection device provided by the invention reflects the water quantity condition in the washing drum 4 by utilizing the mutual attraction of the magnetic small balls and counting through the photosensitive sensor, and has a novel structure.
The washing machine is preferably a single-drum pulsator washing machine, and the existing pressure sensing detection device is not suitable for the single-drum pulsator washing machine, so that the water level detection device provided by the invention can be arranged on the single-drum pulsator washing machine. The suspension channel 1 is arranged on the washing barrel 4, the suspension magnetic ball 2 is arranged in the suspension channel 1, the magnetic ball dividing ruler 3 is arranged on the outer barrel 5, the signal acquisition structure is arranged on the outer barrel 5 and the top cover of the washing machine, when the height of the suspension magnetic ball 2 changes along with the height of the liquid level in the suspension channel 1, the suspension magnetic ball 2 can adsorb the magnetic ball 31 corresponding to the position (namely, corresponding to the height) so as to change the position of the magnetic ball 31, the signal acquisition structure can acquire the information of the magnetic ball 31 changing in position on the magnetic ball dividing ruler 3, the position of the magnetic ball 31 with different heights on the magnetic ball dividing ruler 3 changes to reflect the condition of the water level in the washing barrel 4, and the signal acquisition structure can acquire the quantity of the magnetic balls 31 changing in position to acquire the condition of the water level in the washing barrel 4.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (12)
1. A water level detection device is characterized by comprising a suspension channel (1), a suspension magnetic ball (2), a magnetic ball dividing ruler (3) and a signal acquisition structure, wherein,
the suspension channel (1) is arranged on the washing drum (4) and communicated with the inside of the washing drum (4), the suspension magnetic ball (2) is arranged in the suspension channel (1), and the suspension magnetic ball (2) can float on the water surface of the suspension channel (1);
the washing machine is characterized in that the magnetic ball dividing ruler (3) is arranged on the outer barrel (5) on the outer side of the washing barrel (4), a plurality of magnetic balls (31) are distributed on the magnetic ball dividing ruler (3), when the height of the suspended magnetic ball (2) changes along with the height of the liquid level in the suspended channel (1), the suspended magnetic ball (2) can adsorb the magnetic ball (31) at the corresponding position so as to enable the position of the magnetic ball (31) to change, and the signal acquisition structure can acquire the information of the magnetic ball (31) which changes in position on the magnetic ball dividing ruler (3).
2. The water level detecting device according to claim 1, wherein the magnetic balls (31) are distributed along the height direction of the magnetic ball scale (3), the magnetic ball scale (3) comprises moving channels (32), each magnetic ball (31) corresponds to one moving channel (32), the magnetic ball (31) moves towards the direction close to the levitated magnetic ball (2) along the moving channel (32) under the adsorption effect of the levitated magnetic ball (2), and the magnetic ball (31) can reset under the self gravity effect.
3. The water level detection device according to claim 2, wherein the signal collection structure comprises a photosensitive sensor (6) and a light source (7), and when the magnetic ball (31) is located on the moving channel (32) near the levitated magnetic ball (2), the magnetic ball (31) can block the light emitted by the light source (7) to block the photosensitive sensor (6) from detecting the signal of the light source (7).
4. The water level detection device according to claim 3, wherein the magnetic balls (31) are distributed at intervals along the height direction of the magnetic ball scale (3), and the distance between two adjacent magnetic balls (31) is such that the magnetic balls (31) can intermittently shield the light source (7).
5. The water level detection device according to claim 3 or 4, wherein the signal acquisition structure comprises a light tunnel (8), the light source (7) being located within the light tunnel (8);
the magnetic sphere scale (3) comprises a guide cylinder (33), the moving channel (32) is formed in the guide cylinder (33), one end of the guide cylinder (33) is inserted into the light path (8), and at least the part of the guide cylinder (33) inserted into the light path (8) is made of transparent materials.
6. Water level detection device according to claim 3, wherein said light-sensitive sensor (6) is arranged on a washing machine top cover cooperating with said washing drum (4), and said light-sensitive sensor (6) is located directly above said light source (7).
7. Water level detection device according to claim 3 or 4, characterized in that it further comprises a control structure, said signal acquisition structure being connected to said control structure, said control structure being able to receive information from said signal acquisition structure and said control structure being adapted to control the water level inside said washing tub (4).
8. The water level detecting apparatus according to claim 2, wherein the magnetic ball scale (3) is provided at a position of the outer cylinder (5) near the float passage (1), and the moving passage (32) is inclined obliquely upward in a direction from an outer side of the outer cylinder (5) to an inner side of the outer cylinder (5).
9. Water level detection device according to any of claims 1-4, characterized in that the suspension channel (1) is cylindrical in shape and the circumferential side wall of the suspension channel (1) can limit the floating magnetic ball (2) from moving in horizontal direction.
10. Water level detection device according to any of claims 1-4, characterized in that a debris filter assembly (9) is arranged on the washing drum (4), and the suspension passage (1) is located in the debris filter assembly (9).
11. A washing machine characterized by comprising the water level detection apparatus of any one of claims 1 to 10.
12. The washing machine as claimed in claim 11, wherein the washing machine is a single drum pulsator washing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110175098.4A CN113005719B (en) | 2021-02-09 | 2021-02-09 | Water level detection device and pulsator washing machine |
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| CN202110175098.4A CN113005719B (en) | 2021-02-09 | 2021-02-09 | Water level detection device and pulsator washing machine |
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| CN113005719A true CN113005719A (en) | 2021-06-22 |
| CN113005719B CN113005719B (en) | 2022-04-08 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59166195A (en) * | 1984-03-06 | 1984-09-19 | 松下電器産業株式会社 | Water level detector of washer |
| CN102867682A (en) * | 2012-09-23 | 2013-01-09 | 刘信 | Optic fiber level switch |
| CN103114421A (en) * | 2013-01-25 | 2013-05-22 | 合肥荣事达三洋电器股份有限公司 | Device and method thereof for detecting water level height of pulsator washing machine |
| CN106264402A (en) * | 2015-05-11 | 2017-01-04 | 青岛海尔洗碗机有限公司 | The water level decision maker of a kind of wash mill and water level decision method |
-
2021
- 2021-02-09 CN CN202110175098.4A patent/CN113005719B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59166195A (en) * | 1984-03-06 | 1984-09-19 | 松下電器産業株式会社 | Water level detector of washer |
| CN102867682A (en) * | 2012-09-23 | 2013-01-09 | 刘信 | Optic fiber level switch |
| CN103114421A (en) * | 2013-01-25 | 2013-05-22 | 合肥荣事达三洋电器股份有限公司 | Device and method thereof for detecting water level height of pulsator washing machine |
| CN106264402A (en) * | 2015-05-11 | 2017-01-04 | 青岛海尔洗碗机有限公司 | The water level decision maker of a kind of wash mill and water level decision method |
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