CN107012667B - Washing machine and detergent liquid level detection device for same - Google Patents
Washing machine and detergent liquid level detection device for same Download PDFInfo
- Publication number
- CN107012667B CN107012667B CN201710174704.4A CN201710174704A CN107012667B CN 107012667 B CN107012667 B CN 107012667B CN 201710174704 A CN201710174704 A CN 201710174704A CN 107012667 B CN107012667 B CN 107012667B
- Authority
- CN
- China
- Prior art keywords
- detergent
- liquid level
- switch
- air chamber
- storage box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/02—Devices for adding soap or other washing agents
- D06F39/022—Devices for adding soap or other washing agents in a liquid state
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention discloses a washing machine and a detergent liquid level detection device for the washing machine, wherein the washing machine comprises a detergent storage box, the detergent storage box is provided with a U-shaped groove, one side of the U-shaped groove is used for putting detergent, the other side of the U-shaped groove forms a closed air chamber, a guide nozzle is arranged on the closed air chamber, and the detergent liquid level detection device comprises: the pressure sensing end of the water level switch is connected to the guide nozzle through a pressure pipe, and a first switching signal and a second switching signal are output by sensing the air pressure change condition in the sealed air chamber; and the liquid level detection unit detects the liquid level of the detergent in the detergent storage box according to the first switch signal and the second switch signal. The device need not to contact with the detergent, and the air pressure in the airtight plenum in the perception detergent storage box U type groove changes through water level switch, can detect out the detergent liquid level safely, reliably, avoids taking place because the detergent wall built-up or local aggregate sclerosis lead to the inaccurate phenomenon of detergent liquid level that detects, and the cost is lower.
Description
Technical Field
The invention relates to the technical field of washing machines, in particular to a detergent liquid level detection device for a washing machine and the washing machine.
Background
For a washing machine with an automatic detergent feeding function, the detergent liquid level needs to be detected.
In the related art, the detergent level detection is generally performed in two ways, i.e., a float switch way or a probe way. The float switch mode is that a column is arranged in the detergent storage box, and the float switch is sleeved on the column and can float up and down along with the change of the liquid level. Meanwhile, a reed switch is arranged in the float switch, a magnet is arranged at a specific liquid level of the detergent storage box, when the float switch moves up and down along with the liquid level change and approaches the magnet, the reed switch is closed to output a corresponding liquid level signal, and therefore the liquid level of the detergent is detected. However, since the detergent is thick, the detergent liquid level detection in this way may cause the phenomenon that the float switch is hung on the column, so that the float switch does not move up and down with the change of the liquid level, and the detected detergent liquid level is inaccurate.
The probe mode is that two metal probes are arranged in the detergent, the controller leads +12V voltage to one of the metal probes, when the two metal probes are completely immersed in the detergent, the other metal probe can generate +12V voltage due to the conductivity of the detergent, and the liquid level of the detergent can be judged by detecting the voltage of the other metal probe. However, this approach not only requires the controller to provide an isolated +12V voltage, which is costly, but also requires the detergent as a conductive carrier, which may locally build up and harden if the detergent is left unused in the storage box for a long time, resulting in a large difference between the detected detergent level and the actual level.
In summary, the above two detergent liquid level detection methods may cause the phenomenon of liquid level misjudgment. Therefore, how to provide a reliable detergent level detection device becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, an object of the present invention is to provide a detergent level detecting device for a washing machine, which can detect the detergent level safely and reliably by sensing the air pressure change in a sealed air chamber in a U-shaped groove of a detergent storage box through a water level switch without contacting with the detergent, so as to avoid the occurrence of inaccurate detected detergent level caused by the wall built-up of the detergent or local aggregation and hardening, and at a low cost.
Another object of the present invention is to provide a washing machine.
In order to achieve the above object, according to an embodiment of an aspect of the present invention, a detergent level detecting device for a washing machine is provided, the washing machine including a detergent storage box, the detergent storage box having a U-shaped groove, one side of the U-shaped groove being used for putting detergent, and the other side of the U-shaped groove forming a closed air chamber, and a guide nozzle is disposed on the closed air chamber, the detergent level detecting device including: the pressure sensing end of the water level switch is connected to the guide nozzle through a pressure pipe, and the water level switch outputs a first switch signal and a second switch signal by sensing the air pressure change condition in the sealed air chamber; and the liquid level detection unit is connected with the water level switch and is used for detecting the detergent liquid level in the detergent storage box according to the first switching signal and the second switching signal.
According to the detergent liquid level detection device for the washing machine, the air pressure change condition in the air chamber is sensed through the water level switch to output the first switch signal and the second switch signal, and the detergent liquid level in the detergent storage box is detected through the liquid level detection unit according to the first switch signal and the second switch signal. Therefore, the device does not need to be in contact with the detergent, the detergent liquid level can be safely and reliably detected by sensing the air pressure change in the sealed air chamber in the U-shaped groove of the detergent storage box through the water level switch, the phenomenon that the detected detergent liquid level is inaccurate due to the fact that the detergent is hung on the wall or is locally aggregated and hardened is avoided, and the cost is low.
In addition, the detergent level detecting apparatus for a washing machine according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, the above detergent liquid level detection device for a washing machine further comprises a prompt unit, wherein the prompt unit is connected to the liquid level detection unit, and when the liquid level detection unit receives the first switch signal, the liquid level detection unit determines that the detergent liquid level in the detergent storage box reaches a first preset liquid level, and controls the prompt unit to send out a prompt message indicating that the detergent is full; when the liquid level detection unit receives the second switch signal, the liquid level detection unit judges that the detergent liquid level in the detergent storage box is smaller than a second preset liquid level and controls the prompt unit to send out detergent lack prompt information, wherein the second preset liquid level is smaller than the first preset liquid level.
According to one embodiment of the invention, the water level switch comprises an air chamber, a rubber membrane and a movable reed, the air chamber is connected to the guide nozzle through the pressure pipe, the air pressure in the air chamber changes along with the air pressure in the sealed air chamber, and when the air pressure in the air chamber changes, the rubber membrane moves to drive the contact of the movable reed to move between a first position and a second position.
According to an embodiment of the present invention, when the contact of the movable spring is in the first position, the water level switch outputs a first switch signal; and when the contact of the movable reed is at the second position, the water level switch outputs a second switch signal.
According to one embodiment of the invention, the spout is arranged at the top of the closed air chamber.
In order to achieve the above object, another embodiment of the present invention provides a washing machine, which includes the above detergent storage box and a detergent level detecting device for the washing machine.
According to the washing machine provided by the embodiment of the invention, the water level switch of the detergent liquid level detection device is used for sensing the air pressure change condition in the sealed air chamber so as to output a first switch signal and a second switch signal, and the liquid level detection unit is used for detecting the detergent liquid level in the detergent storage box according to the first switch signal and the second switch signal. Therefore, the washing machine can safely and reliably detect the liquid level of the detergent by sensing the air pressure change in the sealed air chamber in the U-shaped groove of the detergent storage box through the water level switch, avoid the phenomenon that the detected liquid level of the detergent is inaccurate due to the fact that the detergent is hung on the wall or is locally aggregated and hardened, and is low in cost.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which,
FIG. 1 is a block schematic diagram of a detergent level detection apparatus for a washing machine according to one embodiment of the present invention;
FIG. 2 is a block schematic diagram of a detergent level detection apparatus for a washing machine according to one specific example of the present invention;
FIG. 3 is a block schematic diagram of a detergent level detection apparatus for a washing machine according to another embodiment of the present invention;
FIG. 4 is a schematic structural view of a water level switch according to an embodiment of the present invention; and
fig. 5 is a schematic view of the construction of a movable spring and a cam according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The detergent level detecting device for a washing machine and the washing machine according to the embodiments of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a block schematic view of a detergent level detecting apparatus for a washing machine according to one embodiment of the present invention.
In an embodiment of the present invention, as shown in fig. 1, the washing machine may include a detergent storage box 10 and a liquid level detecting device. The detergent storage box 10 is provided with a U-shaped groove, one side of the U-shaped groove is used for putting detergent, the other side of the U-shaped groove forms a closed air chamber, a guide nozzle 20 is arranged on the closed air chamber, and the guide nozzle 20 can be arranged at the top of the closed air chamber.
The detergent level detecting device includes: a water level switch 30 and a liquid level detection unit 40. Wherein, the pressure sensing end 300 of the water level switch 30 is connected to the nozzle 20 through the pressure pipe 50, and the water level switch 30 outputs a first switching signal and a second switching signal by sensing a change condition of air pressure in the sealed air chamber. The liquid level detecting unit 40 is connected to the water level switch 30, and the liquid level detecting unit 40 is used to detect the detergent liquid level in the detergent storage box according to the first switching signal and the second switching signal.
Specifically, based on the principle of the communicating vessel, when the detergent is put in, the detergent can sink into the other sealed air chamber from the putting side of the U-shaped groove, so that the air pressure in the sealed air chamber changes, wherein the air pressure in the sealed air chamber can increase along with the increase of the liquid level of the detergent. Since the pressure sensing terminal 300 of the water level switch 30 is connected to the nozzle 20 through the pressure tube 50, the water level switch 30 senses a change in air pressure in the sealed air chamber. The water level switch 30 acts according to the air pressure change condition in the sealed air chamber and outputs a corresponding switch signal, for example, when the detergent liquid level reaches a higher liquid level, the water level switch 30 outputs a first switch signal; when the detergent level reaches a lower level, the water level switch 30 outputs a second switching signal. The level detecting unit 40 can determine the detergent level inside the detergent storage box 10 according to the received switching signal.
As an example, for a washing machine having a function of automatically dispensing detergent, as shown in fig. 2, a detergent outlet 102 may be provided at the bottom of the detergent storage box 10, and the outlet 102 may be connected to a peristaltic pump of the washing machine through a pipe. The controller of the washing machine automatically senses the weight of clothes through a fuzzy weighing technology, combines a washing program selected by a user, judges the current environmental temperature by integrating a built-in temperature sensor to adjust the dosage of the detergent, intelligently controls the peristaltic pump, and extrudes the detergent into the multi-way distributor, so that the intelligent feeding of the detergent is realized, and the full-automatic intellectualization is really realized. Meanwhile, in order to prevent a phenomenon that the washing effect is affected due to too little detergent in the detergent storage box 10 or the detergent overflows due to too much detergent, the level of the detergent in the detergent storage box 10 needs to be detected to remind the user when the level is low or high.
Specifically, as shown in fig. 2, a user may add detergent into the detergent storage box 10 through the detergent addition port 101. When the detergent level in the detergent storage box 10 is changed, the air pressure in the airtight air chamber is changed, and the water level switch 30 senses the air pressure change in the airtight air chamber. The water level sensor 30 outputs a corresponding switch signal according to the variation of the air pressure in the sealed air chamber, and the liquid level detecting unit 40 can determine the detergent liquid level in the detergent storage box 10 according to the switch signal.
Therefore, the device does not need to be in contact with the detergent, the detergent liquid level can be safely and reliably detected by sensing the air pressure change in the sealed air chamber in the U-shaped groove of the detergent storage box through the water level switch, the phenomenon that the detected detergent liquid level is inaccurate due to the fact that the detergent is hung on the wall or is locally aggregated and hardened is avoided, and the cost is low.
Further, as shown in fig. 3, the detergent level detecting apparatus for a washing machine described above may further include a prompt unit 60, and the prompt unit 60 is connected to the level detecting unit 40. When the liquid level detection unit 40 receives the first switching signal, the liquid level detection unit 40 judges that the detergent liquid level in the detergent storage box 10 reaches a first preset liquid level, and controls the prompt unit 60 to send out a prompt message of full detergent amount; when the liquid level detecting unit 40 receives the second switching signal, the liquid level detecting unit 40 determines that the detergent liquid level in the detergent storage box 10 is less than a second preset liquid level, and controls the prompting unit 40 to send out a detergent shortage prompting message, wherein the second preset liquid level is less than the first preset liquid level.
Specifically, the prompting unit 60 may be an indicator lamp, a voice broadcast module, or a UI (user interface) interface, etc. disposed on the washing machine. When the liquid level detecting unit 40 receives the first switch signal, it is described that the detergent liquid level in the detergent storage box 10 is greater than or equal to the first preset liquid level at this time, the detergent liquid level is higher, in order to prevent the detergent overflow caused by the user continuing to add detergent, the liquid level detecting unit 40 can be used for controlling the detergent full-level indicator lamp to be turned on, or controlling the voice broadcasting module to broadcast the prompt tone of "detergent full level", and then controlling the UI interface to display "detergent full level! "text prompt information, etc. to remind the user.
When the liquid level detecting unit 40 receives the second switch signal, it is described that the detergent liquid level in the detergent storage box 10 is lower than the second preset liquid level, the detergent liquid level is lower, in order to prevent the condition that the washing effect is affected by the lack of the detergent, the liquid level detecting unit 40 can be controlled to control the indicator lamp for detergent lack to light, or the voice broadcasting module can be controlled to broadcast the prompt tone of "lack of the detergent, please add", or the UI interface is controlled to display the "lack of the detergent, please add! "text prompt information, etc. to remind the user. Therefore, when a user adds detergent, the user is reminded of the liquid level of the detergent through the prompting unit, and the condition that the washing effect is influenced due to overhigh overflow of the liquid level of the detergent or overlow liquid level of the detergent is effectively prevented.
In order to make it clear to those skilled in the art how the water level switch 30 outputs the switching signal, the following description will be made in detail with reference to specific examples of the present invention.
Fig. 4 is a schematic structural view of a water level switch according to an embodiment of the present invention. As shown in fig. 4, the water level switch 30 includes an air chamber 301, a rubber membrane 302 and a movable spring 303, the air chamber 301 is connected to the nozzle 20 through a pressure tube 50, the air pressure in the air chamber 301 changes along with the air pressure in the sealed air chamber, and when the air pressure in the air chamber 301 changes, the rubber membrane 302 moves to drive the contact of the movable spring 303 to move between the first position and the second position.
When the contact of the movable reed 303 is at the first position, the water level switch 30 outputs a first switch signal; when the contact of the movable reed 303 is at the second position, the water level switch 30 outputs a second switch signal.
Specifically, as shown in fig. 4, the water level switch 30 may further include: the structure of the cam 304, the pressure spring 305, the pressure adjusting screw 306, the guide sleeve 307, the lever 308, the long spring 309, the top core (valve core) 310, the small pressure switch spring 311, the plastic disc 312, the pressure hose 313, and further, the movable spring piece 303 and the cam 304 is as shown in fig. 5. Wherein, the pressure sensing end 300 of the water level switch 30 is located at the bottom end of the pressure hose 313 of the water level switch 30, and is connected with the guide nozzle 20 of the detergent storage box 10 through the air return pipe 50.
When the detergent liquid level in the detergent storage box 10 rises, the air pressure in the air chamber 301 of the water level switch 30 rises, and the rubber film 302 above the air chamber 301 is gradually pushed up, so that the top core 310 is pushed up against the pressure of the pressure spring 305, and simultaneously the middle portion of the movable spring 303 is moved up together. When the movable spring piece 303 exceeds the turning position, the pressure direction of the small switch pressure spring 311 (i.e., the quick-jump spring) is suddenly changed and rapidly bends downward, so that the contact on the movable spring piece 303 is contacted with the lower stationary contact (i.e., the first position), at this time, the circuit corresponding to the second position is cut off, the circuit corresponding to the first position is switched on, and the water level switch 30 generates a first switch signal. The liquid level detecting unit 40 determines that the detergent liquid level in the detergent storage box 10 reaches a higher level at this time according to the first switching signal, and in order to prevent the detergent from overflowing, the liquid level detecting unit 40 may control the prompting unit 60 to send out a prompt message indicating that the detergent is full, so as to remind the user.
When the detergent level in the detergent storage box 10 drops, the air pressure in the air chamber 301 of the water level switch 30 is reduced, and the top core 310 moves downward by the pressure spring 305, and simultaneously drives the middle portion of the movable spring 303 to move downward together. When the movable spring piece 303 exceeds the direction changing position (i.e. the middle part of the movable spring piece 303 is lower than the two side parts), the pressure direction of the small switch pressure spring 311 (i.e. the quick jump spring) is suddenly changed, at this moment, the movable spring piece 303 is pushed upwards, namely, the contact point on the movable spring piece 303 is contacted with the second position, at this moment, the circuit corresponding to the first position is cut off, the circuit corresponding to the second position is switched on, and the water level switch 30 generates a second switch signal. The liquid level detecting unit 40 determines that the detergent liquid level in the detergent storage box 10 is low at this time according to the received second switching signal, and in order to prevent the phenomenon that the washing effect is affected due to the lack of detergent, the liquid level detecting unit 40 may control the prompting unit 60 to send out a prompt message that the detergent is lack, so as to remind the user.
That is to say, the variation of the detergent liquid level in the detergent storage box 10 will affect the variation of the air pressure in the closed air chamber of the U-shaped groove, and at the same time, the variation of the air pressure will cause the mechanical action of the rubber membrane 302 in the water level switch 30, and this mechanical movement will drive the contact of the movable spring 303 of the water level switch 30 to move up and down, so as to achieve the function of connecting and disconnecting the corresponding circuit, and further achieve the purpose of detecting the detergent liquid level.
In addition, it should be noted that the cam 304 is used for adjusting the height of the first preset liquid level and the second preset liquid level. Specifically, as shown in fig. 4, a long spring 309 is further provided inside the water level switch 30, and functions to abut against the lever 308 contacting the cam 304 with the right side as an axis and the left side abutting against a recess of the cam 304. When the lever 308 is located at different positions of the cam 304, the compression amount of the pressure spring 305 is different, and the pressure on the top core 310 is also different, so that the purpose of adjusting the first preset liquid level and the second preset liquid level is achieved, and the universality of the water level switch is greatly improved.
In summary, according to the detergent liquid level detection device for the washing machine of the embodiment of the invention, the detergent liquid level can be safely and reliably detected by sensing the air pressure change in the sealed air chamber in the U-shaped groove of the detergent storage box through the water level switch without contacting with the detergent, so that the phenomenon of inaccurate detected detergent liquid level caused by detergent wall hanging or local aggregation and hardening is avoided, and the cost is low. Moreover, the device can also correspondingly remind the user when detecting that the liquid level of the detergent is too high or too low, so that the use experience of the user is greatly improved.
In addition, the invention also provides a washing machine, which comprises the detergent storage box and a detergent liquid level detection device for the washing machine.
According to the washing machine provided by the embodiment of the invention, the water level switch of the detergent liquid level detection device is used for sensing the air pressure change condition in the sealed air chamber so as to output a first switch signal and a second switch signal, and the liquid level detection unit is used for detecting the detergent liquid level in the detergent storage box according to the first switch signal and the second switch signal. Therefore, the washing machine can safely and reliably detect the liquid level of the detergent by sensing the air pressure change in the sealed air chamber in the U-shaped groove of the detergent storage box through the water level switch, avoid the phenomenon that the detected liquid level of the detergent is inaccurate due to the fact that the detergent is hung on the wall or is locally aggregated and hardened, and is low in cost.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (5)
1. A detergent liquid level detection device for a washing machine, the washing machine comprising a detergent storage box having a U-shaped groove, one side of the U-shaped groove being used for putting detergent, the other side of the U-shaped groove forming a closed air chamber, and the closed air chamber being provided with a nozzle, the detergent liquid level detection device comprising:
the pressure sensing end of the water level switch is connected to the guide nozzle through a pressure pipe, and the water level switch outputs a first switch signal and a second switch signal by sensing the air pressure change condition in the sealed air chamber;
the liquid level detection unit is connected with the water level switch and is used for detecting the liquid level of the detergent in the detergent storage box according to the first switch signal and the second switch signal;
the guide nozzle is arranged at the top of the closed air chamber, and a detergent output port is arranged at the bottom of the detergent storage box.
2. The detergent level detecting device of claim 1, further comprising a prompt unit connected to the level detecting unit, wherein,
when the liquid level detection unit receives the first switch signal, the liquid level detection unit judges that the liquid level of the detergent in the detergent storage box reaches a first preset liquid level, and controls the prompt unit to send out full detergent prompt information;
when the liquid level detection unit receives the second switch signal, the liquid level detection unit judges that the detergent liquid level in the detergent storage box is smaller than a second preset liquid level and controls the prompt unit to send out detergent lack prompt information, wherein the second preset liquid level is smaller than the first preset liquid level.
3. The detergent level detecting apparatus of claim 1 or 2, wherein the water level switch comprises an air chamber, a rubber membrane and a movable spring, the air chamber is connected to the guide nozzle through the pressure pipe, the air pressure in the air chamber changes along with the air pressure in the sealed air chamber, wherein when the air pressure in the air chamber changes, the rubber membrane moves to drive the contact of the movable spring to move between the first position and the second position.
4. The detergent level detecting apparatus of claim 3, wherein,
when the contact of the movable reed is at the first position, the water level switch outputs a first switch signal;
and when the contact of the movable reed is at the second position, the water level switch outputs a second switch signal.
5. A washing machine characterized by comprising a detergent level detecting device for a washing machine according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174704.4A CN107012667B (en) | 2017-03-22 | 2017-03-22 | Washing machine and detergent liquid level detection device for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174704.4A CN107012667B (en) | 2017-03-22 | 2017-03-22 | Washing machine and detergent liquid level detection device for same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107012667A CN107012667A (en) | 2017-08-04 |
| CN107012667B true CN107012667B (en) | 2020-04-14 |
Family
ID=59440009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710174704.4A Active CN107012667B (en) | 2017-03-22 | 2017-03-22 | Washing machine and detergent liquid level detection device for same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107012667B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691145B (en) * | 2018-05-31 | 2022-09-02 | 佛山市顺德海尔电器有限公司 | Washing machine unbalance loading indicating device, washing machine and unbalance loading detection method |
| CN111455624B (en) * | 2019-01-18 | 2022-04-05 | 青岛海尔洗涤电器有限公司 | Automatic additive feeding device and washing machine |
| CN111058243A (en) * | 2019-12-24 | 2020-04-24 | 佛山海尔滚筒洗衣机有限公司 | A water level monitoring device and dispenser |
| CN114001795B (en) * | 2021-11-01 | 2023-11-03 | 国网北京市电力公司 | Liquid level monitoring method, device, computer-readable medium and processor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1208092A (en) * | 1998-07-17 | 1999-02-17 | 卢杲 | Washing machine with both large capacity and small capacity washing function |
| CN2612697Y (en) * | 2003-02-08 | 2004-04-21 | 无锡小天鹅股份有限公司 | Multistage water level switch of full-automatic washing machine |
| CN202671897U (en) * | 2012-06-21 | 2013-01-16 | 芜湖乐佳电器有限公司 | Water level switch |
| CN103321021A (en) * | 2013-06-27 | 2013-09-25 | 无锡小天鹅股份有限公司 | Washing machine and detergent-box component thereof |
| CN204266009U (en) * | 2014-11-20 | 2015-04-15 | 宁波新乐电器有限公司 | A kind of cleaning agent delivery device of washing machine |
-
2017
- 2017-03-22 CN CN201710174704.4A patent/CN107012667B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107012667A (en) | 2017-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107012667B (en) | Washing machine and detergent liquid level detection device for same | |
| US10099243B2 (en) | Adhesive dispensing device having optimized reservoir and capacitive level sensor | |
| US7360529B2 (en) | Fuel level measurement and run time interpolation | |
| US9896321B2 (en) | Auto water dispenser cutoff | |
| CN205192568U (en) | Be provided with liquid level monitoring devices's liquid case | |
| CN104757877A (en) | Water dispenser and water outlet control method thereof | |
| US20150329347A1 (en) | Systems and methods for receptacle auto fill using inductive sensing | |
| WO2014063422A1 (en) | Washing machine detergent remaining balance detection and display method | |
| CN110244580B (en) | Method and device for controlling replacement of water bucket, drinking water supply device and storage medium | |
| CN111023333A (en) | Dehumidifier and dehumidifier control method | |
| CN210030124U (en) | Pipeline machine and water purifier | |
| EP1363527B1 (en) | A water level indicating device for a dishwasher | |
| CN212180023U (en) | Detection structure and water tank assembly | |
| CN118392268A (en) | Cleaning equipment, liquid level detection device and solution barrel | |
| CN220403931U (en) | Cleaning apparatus | |
| CN104947380A (en) | Detergent box assembly and washing machine comprising the same | |
| JP7732738B2 (en) | washing machine | |
| CN110230168B (en) | Automatic detergent additive dispensing device and washing machine | |
| CN218121096U (en) | Water level detection device and electrical appliance with water generation | |
| CN209144482U (en) | A kind of detergent additive automatic release device and washing machine | |
| CN216885249U (en) | 3D printer | |
| JP4337349B2 (en) | Molten metal supply method and molten metal supply device | |
| CN223016582U (en) | Water storage device and drinking water equipment using the same | |
| CN219038136U (en) | Liquid level detection structure of cleaning equipment water tank and cleaning equipment | |
| CN222119688U (en) | Metering device of chemical material distributor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190722 Address after: 214028 No. 18 Changjiang South Road, Wuxi National High-tech Development Zone, Jiangsu Province Applicant after: Wuxi Swan Electrical Appliances Co., Ltd. Address before: 214028 Wuxi Changjiang Road, New District, Jiangsu, No. 18 Applicant before: Wuxi Xiaotianer Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |