Water level detection device for water tank of water purifier and water purifier

Abstract

The utility model relates to a water level detection device for a water tank of a water purifier and the water purifier, and the device comprises a laser emitter which is used for emitting detection laser; the photosensitive plate is used for receiving the refracted laser; wherein the detection laser is refracted by water in the water tank of the water purifier to become refracted laser, the refracted laser is received by a second area of the photosensitive plate, and the position of the second area on the photosensitive plate is related to the water level in the water tank of the water purifier. The water level detection device is high in water level detection accuracy of the water tank of the water purifier.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to a water level detection device for a water purifier water tank and a water purifier. Background Art

[0002] A water purifier, also known as a water purification machine or water quality purifier, is a water treatment device that deeply filters and purifies water quality according to the usage requirements of water. The technical core of the water purifier is the filter membrane in the filter element device, and the filter membrane can usually be one of an ultrafiltration membrane, an RO reverse osmosis membrane, and a nanofiltration membrane.

[0003] The filtering and purification effect of the water purifier on water quality has a certain correlation with the liquid level detection of the water tank of the water purifier. In the prior art, the liquid level detection of the water tank by water purifier products is relatively single, and usually mainly uses a reed switch for detection. When detecting the water level, the reed switch is installed in the water tank or pool, and the liquid level of the water is monitored and measured in real time. When there are water scales and impurities in the water tank, the reed switch is easily affected and cannot identify the liquid level, thereby affecting the effect of the water purifier and reducing the user experience. Summary of the Utility Model

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides a water level detection device for a water purifier water tank and a water purifier.

[0005] In a first aspect, the utility model provides a water level detection device for a water purifier water tank, the device comprising:

[0006] A laser emitter for emitting detection laser;

[0007] A photosensitive plate for receiving the refracted laser;

[0008] Wherein, the detection laser is refracted by the water in the water purifier water tank to become the refracted laser, and the refracted laser is received by a second area of the photosensitive plate, and the position of the second area on the photosensitive plate is related to the water level in the water purifier water tank.

[0009] Optionally, the laser emitter is arranged at the bottom inside the water purifier water tank, and the photosensitive plate is arranged on the side wall inside the water purifier water tank.

[0010] Optionally, the detection laser emitted by the laser emitter forms an acute angle with the bottom of the water purifier water tank and is directed towards the photosensitive plate on the side wall of the water purifier water tank.

[0011] Optionally, the laser emitter is arranged on the side wall inside the water purifier water tank, and the photosensitive plate is arranged at the bottom inside the water purifier water tank.

[0012] Optionally, the detection laser emitted by the laser emitter forms an acute angle with the side wall of the water purifier water tank and is directed towards the photosensitive plate at the bottom of the water purifier water tank.

[0013] Optionally, if there is no water in the water purifier water tank, the detection laser is received by the first area of the photosensitive plate.

[0014] Optionally, the first area does not coincide with the second area.

[0015] Optionally, the photosensitive plate includes a plurality of photosensitive diodes. Each photosensitive diode outputs a first voltage when irradiated by laser and outputs a second voltage when not irradiated by laser. The first voltage and the second voltage are not equal;

[0016] The position of the photosensitive diode that outputs the first voltage on the photosensitive plate is related to the water level in the water purifier water tank.

[0017] Optionally, the detection device further includes a voltage detector, which is connected to each photosensitive diode on the photosensitive plate and is used to identify the photosensitive diode that outputs the first voltage.

[0018] In a second aspect, a water purifier is provided, including the water purifier water tank water level detection device according to any one of the above.

[0019] The present utility model provides a water purifier water tank water level detection device and a water purifier. The device includes: a laser emitter for emitting a detection laser; a photosensitive plate for receiving the refracted laser. Wherein, the detection laser is refracted by the water in the water purifier water tank to become the refracted laser, and the refracted laser is received by the second area of the photosensitive plate. The position of the second area on the photosensitive plate is related to the water level in the water purifier water tank. In the embodiment of the present utility model, the principle that laser refracts at the junction of water and air is utilized. Since the water level in the water purifier water tank is different, the landing position of the refracted laser on the photosensitive plate is different, thereby obtaining the water level in the water purifier water tank. Since the laser is directionally emitted, has high brightness, and extremely small divergence, and the laser is not easily interfered by impurities, etc., the accuracy is high when detecting the water level. In addition, the detection device of the present utility model has a simple structure, is not easily damaged, and can improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present utility model and, together with the specification, are used to explain the principles of the present utility model.

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 The following shows a schematic diagram of the water level detection device for the water purifier tank in the embodiment of the present invention;

[0023] Figure 2 The following shows a schematic diagram of the refraction of light and the water level height in the embodiment of the present invention;

[0024] Figure 3 The following shows a schematic diagram of the water level detection device for the water purifier tank in the embodiment of the present invention;

[0025] Figure 4 The following shows a schematic circuit diagram of the photosensitive plate in the embodiment of the present invention;

[0026] Among them, 110 is a laser emitter; 120 is a photosensitive plate. Detailed implementation manners

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0028] Figure 1 The following shows a schematic diagram of a water level detection device for a water purifier tank in the embodiment of the present invention, as Figure 1 shown, the device includes:

[0029] A laser emitter 110 for emitting detection laser;

[0030] A photosensitive plate 120 for receiving the refracted laser;

[0031] Among them, the detection laser is refracted by the water in the water purifier tank to become the refracted laser, and the refracted laser is received by the second area of the photosensitive plate 120, and the position of the second area on the photosensitive plate 120 is related to the water level in the water purifier tank.

[0032] Since light travels at different speeds in two different media, refraction occurs at the boundary between the two different media. In the embodiments of the present invention, water is stored in the water purifier tank, and air exists above the tank. When the laser is at the interface between water and air, refraction occurs.

[0033] Figure 2 The following shows a schematic diagram of the refraction of light and the water level height in the embodiments of the present invention. In the embodiment shown in FIG. 2, the laser emitter 110 is disposed at the bottom inside the water purifier tank, and the photosensitive plate 120 is disposed on the side wall inside the water purifier tank.

[0034] As Figure 2 shown, Figure 2 (a) The water level line 210 and Figure 2 (b) The water level line 220 in are different water levels, and the straight line with an arrow represents the laser.

[0035] It is detected that the laser travels in a straight line in water. At the boundary between water and air, that is, at the water level lines 210 and 220, deflection occurs due to the refraction principle. Because of the points where deflection occurs, that is, the positions where the laser enters the air from water, such as Figure 2 A1 in (a) and Figure 2 A2 in (b) are different, and the landing points of the refracted laser on the side wall, that is, Figure 2 B1 in (a) and Figure 2 B2 in (b) are also in different positions.

[0036] Based on the above principle, the present invention is provided with a laser emitter 110 and a photosensitive plate 120. The photosensitive plate 120 receives the refracted laser. When the water level in the water purifier tank is different, the position where the refracted laser is received on the photosensitive plate 120 is different, that is, the position of the second region on the photosensitive plate 120 is related to the water level in the water purifier tank.

[0037] In the present invention, by detecting the position of the refracted laser on the photosensitive plate 120, the water level in the water purifier tank can be obtained.

[0038] In the embodiments of the present invention, by using the principle that the laser generates refraction at the boundary between water and air, since the water level in the water purifier tank is different, the landing point position of the refracted laser on the photosensitive plate 120 is different, thereby obtaining the water level in the water purifier tank. Since the laser is directionally emitted, has high brightness, and extremely small divergence, and the laser is not easily interfered by impurities, etc., the detection device in the embodiments of the present invention has high accuracy when detecting the water level. In addition, the detection device of the present invention has a simple structure, is not easily damaged, and can improve the user experience.

[0039] In the embodiments of the present invention, there are also various settings for the laser emitter 110 and the photosensitive plate 120, such asFigure 1 As shown, the laser emitter 110 is disposed at the bottom inside the water purifier water tank, and the photosensitive plate 120 is disposed on the side wall inside the water purifier water tank.

[0040] In an embodiment of the present invention, the detection laser emitted by the laser emitter 110 forms an acute angle with the bottom of the water purifier water tank and is directed towards the photosensitive plate 120 on the side wall of the water purifier water tank.

[0041] In an embodiment of the present invention, as Figure 3 shown, the laser emitter 110 is disposed on the side wall inside the water purifier water tank, and the photosensitive plate 120 is disposed at the bottom inside the water purifier water tank.

[0042] The detection laser emitted by the laser emitter 110 forms an acute angle with the side wall of the water purifier water tank and is directed towards the photosensitive plate 120 at the bottom of the water purifier water tank.

[0043] In an embodiment of the present invention, referring to Figure 1 and Figure 3 shown, if there is no water in the water purifier water tank, the detection laser is received by the first area of the photosensitive plate 120.

[0044] In an embodiment of the present invention, the first area does not coincide with the second area.

[0045] In an embodiment of the present invention, the first area is the area that receives the detection laser when there is no water in the water purifier water tank; the second area is the area where the detection laser is refracted by the water and then irradiates on the photosensitive plate 120 when there is water in the water purifier water tank.

[0046] In an embodiment of the present invention, the relative positions of the laser emitter 110 and the photosensitive plate 120 can also be set in other ways, and it is necessary to ensure that the laser emitted by the laser emitter 110 can penetrate the water in the water purifier water tank and then irradiate on the photosensitive plate 120.

[0047] The setting position of the photosensitive plate 120 is related to the highest water level and / or safety water level in the water tank, etc., and it is necessary to be able to receive all the refracted lasers. In addition, the setting position of the photosensitive plate 120 should also ensure that the emitted laser can be received when there is no water in the water tank.

[0048] When there is no water in the water level, receiving the emitted laser can be used to correct the water level detection or to perform low water level alarm on the water level in the water purifier water tank, etc.

[0049] In addition, in order to ensure the accuracy of water level detection and considering the aging of devices, etc., there also needs to be a certain redundancy in the setting position of the photosensitive plate 120.

[0050] In the embodiments of the present utility model, in order to ensure the safety of use, there may also be a waterproof structure between the laser emitter 110 and water, and between the photosensitive plate 120 and water. The waterproof structure can be a waterproof coating, a waterproof partition, etc. Since the refractive index of the waterproof structure is different from that of water and air, when setting the laser emitter 110 and the photosensitive plate 120, and when calculating the water level in the water purifier water tank subsequently, the influence caused by the waterproof structure needs to be eliminated.

[0051] Figure 4 The following shows the circuit schematic diagram of the photosensitive plate 120 in the embodiments of the present utility model. As Figure 4 shown, the photosensitive plate 120 includes a plurality of photosensitive diodes. Each photosensitive diode outputs a first voltage when irradiated by laser, and each photosensitive diode outputs a second voltage when not irradiated by laser. The first voltage and the second voltage are not equal.

[0052] The position of the photosensitive diode that outputs the first voltage on the photosensitive plate 120 is related to the water level in the water purifier water tank.

[0053] The detection device further includes a voltage detector, which is connected to each photosensitive diode on the photosensitive plate 120 and is used to identify the photosensitive diode that outputs the first voltage.

[0054] When the photosensitivity is irradiated by laser and not irradiated by laser, the output voltages are different. In the embodiments of the present utility model, by identifying the photosensitive diode that outputs the first voltage, the position on the photosensitive plate 120 where the refracted light is received can be obtained, and thus the water level in the water tank can be calculated.

[0055] As Figure 4 shown, the first end of the photosensitive diode is connected to the power supply through a resistor, and the first end of the photosensitive diode is also connected to the voltage detector at the same time. The second end of the photosensitive diode is grounded. After the photosensitive diode is irradiated by the refracted laser, the photosensitive diode outputs the first voltage, and the voltage detector connected to the photosensitive diode can identify the first voltage.

[0056] Figure 4 In, the photosensitive diodes are D1, D2, D3... D9, and the corresponding resistors for voltage division are R1, R2, R3... R9. The C1, C2, C3... C9 ports are respectively connected to the corresponding ports of the voltage detector.

[0057] In other embodiments of the present utility model, according to the accuracy requirements, more or fewer photosensitive diodes and corresponding resistors may also be included.

[0058] In the embodiments of the present utility model, the voltage detector can adopt a trigger, a voltage detection chip, an MCU, etc., which will not be elaborated here.

[0059] In the embodiments of the present utility model, the photosensitive plate 120 may be a split photosensitive plate 120, or a photosensitive area composed of a multi-segment photosensitive resistor, etc.

[0060] The embodiments of the present utility model further provide a water purifier, including the water purifier water tank water level detection device as described above.

[0061] In the embodiments of the present utility model, the detection device includes:

[0062] A laser emitter 110 for emitting detection laser;

[0063] A photosensitive plate 120 for receiving the refracted laser;

[0064] Wherein, the detection laser is refracted by the water in the water purifier water tank to become the refracted laser, and the refracted laser is received by a second area of the photosensitive plate 120, and the position of the second area on the photosensitive plate 120 is related to the water level in the water purifier water tank.

[0065] In the embodiments of the present utility model, the laser emitter 110 is arranged at the bottom inside the water purifier water tank, and the photosensitive plate 120 is arranged on the side wall inside the water purifier water tank.

[0066] In the embodiments of the present utility model, the detection laser emitted by the laser emitter 110 forms an acute angle with the bottom of the water purifier water tank and is directed towards the photosensitive plate 120 on the side wall of the water purifier water tank.

[0067] In the embodiments of the present utility model, the laser emitter 110 is arranged on the side wall inside the water purifier water tank, and the photosensitive plate 120 is arranged at the bottom inside the water purifier water tank.

[0068] In the embodiments of the present utility model, the detection laser emitted by the laser emitter 110 forms an acute angle with the side wall of the water purifier water tank and is directed towards the photosensitive plate 120 at the bottom of the water purifier water tank.

[0069] In the embodiments of the present utility model, if there is no water in the water purifier water tank, the detection laser is received by a first area of the photosensitive plate 120.

[0070] In the embodiments of the present utility model, the first area does not coincide with the second area.

[0071] In the embodiments of the present utility model, the photosensitive plate 120 includes a plurality of photosensitive diodes. Each photosensitive diode outputs a first voltage when irradiated by laser, and each photosensitive diode outputs a second voltage when not irradiated by laser, and the first voltage and the second voltage are not equal;

[0072] The position of the photosensitive diode that outputs the first voltage on the photosensitive plate 120 is related to the water level in the water purifier water tank.

[0073] In an embodiment of the present invention, the detection device further includes a voltage detector, and the voltage detector is connected to each of the photosensitive diodes on the photosensitive plate 120 for identifying the photosensitive diode that outputs the first voltage.

[0074] The water purifier may further include an LED indicator for displaying the water tank water level according to the detection result of the water tank water level detection device of the water purifier.

[0075] The water purifier may further include a display screen for displaying the water tank water level according to the detection result of the water tank water level detection device of the water purifier.

[0076] The water purifier of the present invention has high accuracy during water level detection and can improve the user experience.

[0077] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0078] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A water level detection device for a water purifier water tank, characterized in that, The device includes: a laser emitter for emitting detection laser; a photosensitive plate for receiving the refracted laser; wherein the detection laser is refracted by the water in the water purifier water tank to become the refracted laser, and the refracted laser is received by the second area of the photosensitive plate, and the position of the second area on the photosensitive plate is related to the water level in the water purifier water tank.

2. The detection device according to claim 1, wherein The laser emitter is arranged at the bottom inside the water purifier water tank, and the photosensitive plate is arranged on the side wall inside the water purifier water tank.

3. The detection device according to claim 2, wherein The detection laser emitted by the laser emitter forms an acute angle with the bottom of the water purifier water tank and is directed at the photosensitive plate on the side wall of the water purifier water tank.

4. The detection device according to claim 1, characterized in that, The laser emitter is arranged on the side wall inside the water purifier water tank, and the photosensitive plate is arranged at the bottom inside the water purifier water tank.

5. The detection device according to claim 4, characterized in that, The detection laser emitted by the laser emitter forms an acute angle with the side wall of the water purifier water tank and is directed at the photosensitive plate at the bottom of the water purifier water tank.

6. The detection device according to claim 1, characterized in that, If there is no water in the water purifier water tank, the detection laser is received by the first area of the photosensitive plate.

7. The detection device according to claim 6, characterized in that, The first area does not coincide with the second area.

8. The detection device according to claim 1, characterized in that, The photosensitive plate includes a plurality of photosensitive diodes. Each photosensitive diode outputs a first voltage when irradiated by laser and outputs a second voltage when not irradiated by laser, and the first voltage and the second voltage are not equal; The position of the photosensitive diode outputting the first voltage on the photosensitive plate is related to the water level in the water purifier water tank.

9. The detection device according to claim 8, wherein, The detection device further includes a voltage detector, which is connected to each photosensitive diode on the photosensitive plate and is used to identify the photosensitive diode outputting the first voltage.

10. A water purifier, characterized in that, It includes the water level detection device for the water purifier water tank according to any one of claims 1 to 9.

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