Water supply device, control method, intelligent closestool and electronic equipment

Abstract

The invention discloses a water supply device, a control method for the water supply device, an intelligent closestool and electronic equipment. The water supply device comprises a water tank, a water supply pipe, a water pump, a water supplementing device and a controller. Wherein one end of the water supply pipe extends into the water tank, the other end of the water supply pipe is connected with the water pump, so that the water pump pumps water in the water tank, at least one gas mixing hole is formed in the water supply pipe, and the position of each gas mixing hole corresponds to a preset water level of the water tank; the water replenishing part is used for replenishing water to the water tank; the controller is set to control whether the water supplementing component supplements water to the water tank or not according to the running current of the water pump. According to the scheme, whether water needs to be supplemented or not is controlled according to the running current of the water pump, compared with the mode that a sensor is adopted to detect the water level so as to judge whether water needs to be supplemented or not, limitation is avoided, the cost is reduced, and the water supplementing reliability of the system is improved.

Description

Technical Field

[0001] The present invention relates to the field of sanitary ware technology, and in particular to a water supply device, a control method for a water supply device, a smart toilet and an electronic device. Background Art

[0002] In a water supply system using a water pump, the water level in the water tank is usually detected by a liquid level sensor. For example, in an intelligent toilet cleaning device that is driven by a water pump rather than tap water to obtain a variable / constant cleaning pressure, the control system needs to detect the liquid level in the water tank in real time during the cleaning process to determine whether the water in the water tank is insufficient, thereby controlling the opening / closing of the water inlet valve, and the detection of the water tank liquid level is generally completed by a corresponding liquid level sensor.

[0003] In the method of detecting the water level of the water tank by means of sensors, the application of sensors has corresponding use requirements and restrictions; for example, the use of magnetoelectric sensors must consider the requirements of vibration and freezing stress; the use of capacitive induction sensors must consider moisture, corrosion, etc.; the use of photoelectric sensors must consider water turbidity, scale, light decay, etc. Therefore, the use of sensors will increase costs and complicate production design. Summary of the invention

[0004] The embodiments of the present application provide a water supply device, a control method for the water supply device, a smart toilet and an electronic device to solve the problems existing in the current use of liquid level sensors to detect water levels.

[0005] An embodiment of the present application provides a water supply device, including a water tank, a water supply pipe, a water pump, a water replenishment device and a controller;

[0006] One end of the water supply pipe extends into the water tank, and the other end is connected to the water pump so that the water pump extracts water from the water tank. The water supply pipe is provided with at least one mixing hole, and the position of each mixing hole corresponds to a predetermined water level of the water tank. The water replenishing component is configured to replenish water to the water tank.

[0007] The controller is configured to control whether the water replenishing component replenishes water to the water tank according to the operating current of the water pump.

[0008] In one embodiment, the controller is configured to control whether the water replenishing component replenishes water to the water tank according to the magnitude of the operating current of the water pump;

[0009] Alternatively, the controller is configured to control whether the water replenishing component replenishes water to the water tank according to a change in the operating current of the water pump compared to a preset current value.

[0010] In one embodiment, the at least one gas mixing hole comprises a first gas mixing hole, and the first gas mixing hole is located at a first water level of the water tank;

[0011] When the water level in the water tank drops below the first water level, the operating current of the water pump drops from the second current range to the first current range, and the controller controls the water replenishing component to start replenishing water.

[0012] In one embodiment, the at least one gas mixing hole further comprises a second gas mixing hole, and the second gas mixing hole is located at a second water level of the water tank, and the second water level is higher than the first water level;

[0013] When the water level in the water tank rises above the second water level, the operating current of the water pump rises from the second current range to the third current range, and the controller controls the water replenishing component to stop replenishing water.

[0014] In one embodiment, the controller is configured to: control the water replenishing component to start replenishing water when it is detected that the value of the operating current of the water pump is within the first current range, and control the water replenishing component to stop replenishing water when it is detected that the operating current of the water pump is within the third current range;

[0015] Alternatively, the controller is configured to: control the water replenishment component to start replenishing water when it is detected that the change in the operating current of the water pump compared to the preset current value is a negative value and exceeds a preset threshold value; and control the water replenishment component to stop replenishing water when it is detected that the change in the operating current of the water pump compared to the preset current value is a positive value and exceeds a preset threshold value; wherein the preset current value is within the second current range.

[0016] In one embodiment, the ratio of the inner diameter of the water supply pipe to the aperture of the gas mixing hole is 15-18.

[0017] In one embodiment, the water supply device further includes a heating chamber and a heating component, the heating chamber is connected to the output end of the water pump so that the water output by the water pump flows through the heating chamber, and the heating component is configured to heat the water flowing through the heating chamber;

[0018] Wherein, the controller is configured to control the heating power of the heating component according to the operating current of the water pump.

[0019] An embodiment of the present application also provides a smart toilet, including a cleaning system, wherein the cleaning system includes the water supply device as described above.

[0020] The embodiment of the present application also provides a control method for a water supply device, the water supply device comprising: a water tank, a water supply pipe, a water pump and a water replenishing component; wherein one end of the water supply pipe extends into the water tank, and the other end is connected to the water pump, so that the water pump extracts water from the water tank, the water supply pipe is provided with at least one gas mixing hole, the position of each gas mixing hole corresponds to a predetermined water level of the water tank, and the water replenishing component is configured to replenish water to the water tank;

[0021] The control method comprises:

[0022] Obtaining the operating current of the water pump;

[0023] The water replenishing component is controlled to replenish water to the water tank according to the operating current of the water pump.

[0024] In one embodiment, the step of controlling whether the water replenishing component replenishes water to the water tank according to the operating current of the water pump includes:

[0025] Acquiring the magnitude of the operating current of the water pump, and controlling whether the water replenishing component replenishes water to the water tank according to the magnitude of the operating current;

[0026] Alternatively, a change in the running current of the water pump compared to a preset current value is obtained, and the water replenishing component is controlled to replenish water to the water tank according to the change.

[0027] In one embodiment, the at least one gas mixing hole includes a first gas mixing hole and a second gas mixing hole, the first gas mixing hole is located at a first water level of the water tank, the second gas mixing hole is located at a second water level of the water tank, and the second water level is higher than the first water level; wherein,

[0028] The step of controlling whether the water replenishing component replenishes water to the water tank according to the operating current of the water pump comprises:

[0029] Determining whether the operating current of the water pump is within a first current range;

[0030] When the operating current is within a first current range, controlling the water replenishment component to start water replenishment;

[0031] determining whether the operating current of the water pump is within a third current range;

[0032] When the operating current is within the third current range, the water replenishing component is controlled to stop replenishing water.

[0033] In one embodiment, the at least one gas mixing hole includes a first gas mixing hole and a second gas mixing hole, the first gas mixing hole is located at a first water level of the water tank, the second gas mixing hole is located at a second water level of the water tank, and the second water level is higher than the first water level; wherein,

[0034] The step of controlling whether the water replenishing component replenishes water to the water tank according to the operating current of the water pump comprises:

[0035] Calculate the change in the operating current of the water pump compared to the preset current value;

[0036] When the change amount is a negative value and exceeds a preset threshold, the water replenishment component is controlled to start water replenishment;

[0037] When the change amount is a positive value and exceeds a preset threshold, the water replenishing component is controlled to stop replenishing water.

[0038] An embodiment of the present application further provides an electronic device, including a processor and a memory, wherein the memory is configured to store instructions executable by the processor, and the processor is configured to execute the steps in the control method described above.

[0039] In the technical solution provided by the embodiment of the present application, by setting a gas mixing hole on the water supply pipe, when the water pump extracts water from the water tank, so that the water level in the water tank reaches the position of the gas mixing hole or below, the gas will enter the gas mixing hole, so that the water supply pipe is mixed with gas, so that the water pump extracts a mixture of water and gas, the load is reduced, and the operating current is reduced; on the contrary, if the water replenishing component replenishes water into the water tank, when the water level in the water tank rises to or above the gas mixing hole, the gas cannot enter the gas mixing hole, and the operating current of the water pump will increase. Therefore, the solution provided by the present application, by setting a gas mixing hole at a predetermined water level of the water tank, the controller can judge the interval of the water level in the water tank according to the operating current of the water pump, so that the controller can control whether the water replenishing component replenishes water to the water tank according to the operating current. Compared with the current method of using sensors to detect water levels to determine whether water replenishment is needed, the method of controlling water replenishment by detecting the operating current in the solution of the present application is not subject to any restrictions, and there is no need to consider the requirements and restrictions of various sensors in the application, and it can reduce costs and improve the reliability of water replenishment in the system.

[0040] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0042] Figure 1 It is a structural schematic diagram of a water supply device according to an embodiment of the present application;

[0043] Figure 2 A schematic diagram of a control method according to an embodiment of the present application;

[0044] Figure 3 A schematic diagram of a control method according to an embodiment of the present application;

[0045] Figure 4 Schematic diagram of a control method according to another embodiment of the present application. DETAILED DESCRIPTION

[0046] The present application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present application. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0047] The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present application may also be combined with any conventional features or elements to form a unique invention scheme. Any features or elements of any embodiment may also be combined with features or elements from other invention schemes to form another unique invention scheme. Therefore, it should be understood that any feature shown and / or discussed in the present application may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the attached claims and their equivalents, the embodiments are not subject to other restrictions. In addition, various modifications and changes may be made within the scope of protection of the attached claims.

[0048] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of the steps described herein, the method or process should not be limited to the steps of the specific order described. As will be understood by those of ordinary skill in the art, other sequences of steps are also possible. Therefore, the specific sequence of the steps set forth in the specification should not be interpreted as a limitation to the claims. In addition, the claims for the method and / or process should not be limited to the steps of performing them in the order written, and those skilled in the art can easily understand that these sequences can be changed and still remain within the spirit and scope of the embodiments of the present application.

[0049] The embodiment of the present application provides a water supply device, such as Figure 1 As shown, it includes a water tank 1, a water supply pipe 2, a water pump 3, a water replenishing device and a controller.

[0050] Among them, one end of the water supply pipe 2 extends into the water tank 1, and the other end is connected to the water pump 3, so that the water pump 3 draws water from the water tank 1. At least one mixing hole is provided on the water supply pipe 2, and the position of each mixing hole corresponds to a predetermined water level of the water tank 1; the water replenishing component is configured to replenish water to the water tank 1.

[0051] The controller is configured to control whether the water replenishment component replenishes water to the water tank 1 according to the operating current of the water pump 3. The water replenishment component may include a water replenishment pipe 4 connected to the water tank 1 and a control valve 5 arranged on the water replenishment pipe 4, so that the controller can control whether the water replenishment component replenishes water to the water tank 1 by controlling the switch of the control valve 5. The water replenishment component may also include a water supply pump capable of supplying water to the water tank 1.

[0052] In the technical solution provided by the embodiment of the present application, a gas mixing hole is provided on the water supply pipe 2. When the water pump 3 draws water from the water tank 1 so that the water level in the water tank 1 reaches or below the position of the gas mixing hole, air flow enters the gas mixing hole, thereby mixing gas in the water supply pipe 2. In this way, the water pump 3 draws a mixture of water and gas, the load is reduced, and thus the operating current is reduced. On the contrary, if the water replenishing component replenishes water into the water tank 1 and the water level in the water tank 1 rises to or above the gas mixing hole, gas cannot enter the gas mixing hole, and the operating current of the water pump 3 is increased. Therefore, an air mixing hole is set at a predetermined water level of the water tank 1. The predetermined water level can be the first water level of the water tank 1 (the low water level where water replenishment is required), or the second water level of the water tank 1 (the high water level where water replenishment needs to be stopped), or the air mixing hole can be set at the first water level and the second water level respectively. In this way, the controller can determine the interval of the water level in the water tank 1 according to the operating current of the water pump 3, so that the controller can control the water replenishment component to replenish water to the water tank 1 according to the operating current. Compared with the current method of using sensors to detect water levels and thus determine whether water replenishment is needed, the present application controls whether water replenishment is needed according to the operating current of the water pump 3, which is not subject to any restrictions, does not need to consider the use requirements and restrictions of various sensors in applications, and can effectively reduce costs and improve the reliability of system water replenishment.

[0053] In some embodiments, Figure 1 As shown, at least one gas mixing hole on the gas supply pipe 2 includes a first gas mixing hole 21 and a second gas mixing hole 22. The first gas mixing hole 21 is located at a first water level of the water tank 1, and the second gas mixing hole 22 is located at a second water level of the water tank 1. The second water level is higher than the first water level.

[0054] Due to the existence of the first gas mixing hole 21 and the second gas mixing hole 22, the pumping load state of the water pump 3 corresponds to three stages of changes. The first stage is the full water zone: the liquid level in the water tank 1 is above the second gas mixing hole 22, and there is no gas mixing in the air supply pipe 2. At this time, the operating current of the water pump 3 is the largest, and its operating current is in the third current range; the second stage is the middle zone: when the liquid level is between the first gas mixing hole 21 and the second gas mixing hole 22, the second gas mixing hole 22 mixes gas into the air supply pipe 2. At this time, the load of the water pump 3 is: water + a small amount of gas mixing, and the operating current of the water pump 3 has a step decrease and drops to the second current range; the third stage is the water replenishment zone: when the liquid level further drops below the first gas mixing hole 21, the first gas mixing hole 21 and the second gas mixing hole 22 simultaneously mix gas in the water supply pipe 2, and the operating current of the water pump 3 Once again, it drops in steps to the first current range; therefore, the liquid levels in the three intervals correspond to three different operating currents of the water pump 3. Since the water pump 3 system operates in a constant speed state, by detecting the magnitude of the operating current of the motor of the water pump 3, it is possible to know in which interval the liquid level in the water tank 1 is currently located. When the operating current of the water pump 3 drops from the second current range to the first current range, it is known that the water level in the water tank 1 is below the first water level, and the controller controls the water replenishment component to start water replenishment. When the operating current of the water pump 3 rises from the second current range to the third current range, it is known that the water level in the water tank 1 is above the third water level, and the controller controls the water replenishment component to stop water replenishment.

[0055] In some embodiments, the mixing holes on the air supply pipe 2 may only include the first mixing hole 21, and the first mixing hole 21 is located at the first water level of the water tank 1; when the water level in the water tank 1 drops below the first water level, the operating current of the water pump 3 drops from the second current range to the first current range, and the controller controls the water replenishment component to start water replenishment.

[0056] In some embodiments, the mixing holes on the air supply pipe 2 may only include the second mixing holes 22, and the second mixing holes 22 are located at the second water level of the water tank 1; when the water level in the water tank 1 rises above the second water level, the operating current of the water pump 3 rises from the second current range to the third current range, and the controller controls the water replenishing component to stop replenishing water.

[0057] Among them, since the operating current of the water pump 3 will have certain fluctuations, the operating current of the water pump 3 is set to the first current range when the water level is below the first water level, rather than a point value, and the operating current of the water pump 3 is set to the second current range when the water level is between the first water level and the second water level; and the operating current of the water pump 3 is set to the current range when the water level is above the third water level.

[0058] In one embodiment, the controller is configured to control whether the water replenishing component replenishes water to the water tank 1 according to the magnitude of the operating current of the water pump 3 .

[0059] exist Figure 1In the example, the air supply pipe 2 is provided with a first air mixing hole 21 located at a first water level and a second air mixing hole 22 located at a second water level. The controller is configured to: control the water replenishing component to start replenishing water when it is detected that the operating current of the water pump 3 is in a first current range, and control the water replenishing component to stop replenishing water when it is detected that the operating current of the water pump 3 is in a third current range;

[0060] In another embodiment, the controller may also be configured to control whether the water replenishing component replenishes water to the water tank 1 according to the change in the operating current of the water pump 3 compared to a preset current value.

[0061] exist Figure 1 In the example, the air supply pipe 2 is provided with a first mixing hole 21 located at the first water level and a second mixing hole 22 located at the second water level. The controller is configured to: control the water replenishing component to start replenishing water when it is detected that the change between the running current of the water pump 3 and the preset current value is a negative value and the change exceeds the preset threshold, and control the water replenishing component to stop replenishing water when it is detected that the change between the running current of the water pump 3 and the preset current value is a positive value and the change exceeds the preset threshold; wherein the preset current value is within the second current range, that is, the preset current is the running current of the water pump 3 when the water level in the water tank 1 is between the first water level and the second water level, and the preset current can be set to the middle value or average value of the current within the second current range.

[0062] For example, when the operating current of the water pump 3 decreases from the second current range to the first current range, the operating current of the water pump 3 becomes smaller than the preset current value in the second current range, so the change is a negative value and exceeds the preset threshold value. At this time, it can be judged that the water level of the water tank is below the first water level and water replenishment is required. When the operating current of the water pump 3 increases from the second current range to the third current range, the operating current of the water pump 3 becomes larger than the preset current value in the second current range. Therefore, the change is a positive value and exceeds the preset threshold value. At this time, it can be judged that the water level of the water tank 1 is above the third water level and water replenishment needs to be stopped.

[0063] In addition, when the water level in the water tank 1 rises to a level higher than the gas mixing hole or lower than the gas mixing hole, the operating current of the water pump 3 will have a large change, so the water level interval in the water tank 1 can also be determined according to the change of the operating current of the water pump 3 within a predetermined time. For example, when the first gas mixing hole 21 at the first water level and the second gas mixing hole 22 at the second water level are set on the water supply pipe 2, when the water level rises, the operating current of the water pump 3 will have a change that exceeds the preset threshold twice (the change is a positive number), and when the positive change is detected to exceed the preset threshold for the second time, it is judged that the water level in the water tank 1 exceeds the second gas mixing hole 22, and it is necessary to stop replenishing water; on the contrary, when the water level drops, the operating current of the water pump 3 will have a change that exceeds the preset threshold twice (the change is a negative number), and when the negative change is detected to exceed the preset threshold for the second time, it is judged that the water level in the water tank 1 exceeds the first gas mixing hole 21, and it is necessary to start replenishing water.

[0064] In the case where only the first gas mixing hole 21 is provided on the water supply pipe 2, water replenishment can be started when it is detected that the operating current has a negative change exceeding a preset threshold within a predetermined time period. In the case where only the second gas mixing hole 22 is provided on the water supply pipe 2, water replenishment is stopped when it is detected that the operating current has a positive change exceeding a preset threshold within a predetermined time period.

[0065] In the solution provided by the present application, the amount of mixed gas in the water supply pipe 2 can be controlled by setting the size of the mixed gas hole on the water supply pipe 2. In some embodiments, the inner diameter d of the water supply pipe 2 is 水 The diameter of the mixing hole d 气 The ratio is 15-18. The specific value can also be modified experimentally according to the specific application.

[0066] The following takes a water supply device in a cleaning system on a toilet in one embodiment as an example to analyze the setting of one of the gas mixing holes (for example, the second gas mixing hole 22) on the water supply pipe 2.

[0067] Since the working fluid of the water pump 3 in the cleaning system on the toilet is tap water and the pipeline distance from the water tank 1 to the water pump 3 is relatively short, the water fluid can be considered as a non-viscous liquid and incompressible, and the resistance ratio of the pipeline can be ignored in a short distance. Therefore, in qualitative analysis, the entire cleaning system can be approximated as an ideal fluid system.

[0068] Known: the average flow rate of water in the toilet cleaning system is Q, the length of the water supply pipe 2 between the water tank 1 and the water pump 3 is L, and the inner diameter of the water supply pipe 2 is d 水 .

[0069] According to the Bernoulli equation of the fluid, the equation for the velocity change of an ideal fluid in a closed pipe is as follows:

[0070] P 0 +ρ水 V 0 2 / 2+ρ 水 gh 0 =P 1 +ρ 水 V 1 2 / 2+ρ 水 gh1,

[0071] It can be seen from this that P 0 -P 1 =1 / 2ρ 水 (V 1 2-V 0 2 )+ρ 水 g(h 1 -h 0 ).

[0072] in:

[0073] P 0 : Atmospheric pressure in water tank 1 (Pa, 1 standard atmospheric pressure = 101.325 kPa);

[0074] P 1 : Pressure in water supply pipe 2 at the mixing hole (Pa);

[0075] V 0 : Water flow rate in water tank 1 (m / s);

[0076] ρ 气 : Density of air (kg / m 3 , about 1.29kg / m 3 ),

[0077] V 1 : Water flow rate in the water supply pipe 2 (m / s);

[0078] h 0 : The height of the water level in the water tank 1 (m);

[0079] h 1 : The height of the gas mixing hole in the water tank 1 (m);

[0080] ρ 水 : Density of water (kg / m 3 , about 1000kg / m 3 ).

[0081] Due to the continuity of the fluid, the water flow rate in the water tank 1 is much smaller than the water flow rate in the water supply pipe 2, so it can be considered that: V 1 2-V 0 2 ≈V 1 2.

[0082] In addition, the height of the liquid level in the water tank 1 is limited by the structure of the toilet itself, and the height of the water tank 1 body is generally less than 10 cm. Therefore, the remaining water in the water tank 1 during use and the water in the water tank 1 does not overflow during water replenishment are considered. The height difference between the upper and lower mixing holes of the water supply pipe 2 is controlled at about 5-7 cm, that is, h 1 -h 0 The maximum value is about 0.005-0.007m; since the working flow of pump 3 is known Q, the flow rate of water in the pipeline V 1 =4Q / (πd 水 2), so the difference between the internal pressure of the pipe at the mixing hole and the external air pressure is approximately: △P≈P 0 -P 1 =8ρ 水 Q2 / (πd 水 2) 2+70Pa, that is, the pressure inside the pipe at the mixing hole is negative pressure △P relative to the external atmospheric pressure.

[0083] Due to the need for gas mixing, the fluid in the water supply pipe 2 is in the form of a gas-liquid mixture. In order to prevent the mixed gas from affecting the normal use of the rear-end heating device and taking into account the deviation of the water pump current, it is appropriate to control the mixing amount of the gas mixing hole to be approximately 10% of the fluid flow rate.

[0084] In the gas equation, the volume of the mixed gas changes in the pipeline: △V = △P × V a / P 1 ≈0(V a = is the volume of the gas mixed in the atmosphere, and the temperature of the gas remains almost unchanged before and after mixing). Therefore, it can be considered that the volume of gas sucked into the mixing hole is the volume occupied by the mixed fluid. Therefore, the amount of mixed gas can be controlled by the aperture of the mixing hole.

[0085] According to △P≈P 0 -P 1 =8ρ 水 Q2 / (πd 水 2)2, in one example, the inner diameter d of the water supply pipe 2 is set 水 =3mm, the value of △P is about 1kPa, because △P is much smaller than P 0 (Atmospheric pressure P 0 =101.325KPa), so it can be considered that △V≈0; that is, the volume of gas sucked into the mixing hole is the volume occupied by the mixed fluid. Therefore, the mixing amount of gas can be controlled by the aperture of the mixing hole.

[0086] Set the mixed gas volume to 10%, that is, the mixed gas volume Q 气 =0.1Q. Since the density of water is much greater than that of gas, it can be approximately considered that the density of the mixed fluid is about 0.9 of the original fluid.

[0087] According to the Bernoulli equation, the pressure difference between the inside and outside of the mixing hole △P'=1 / 2ρ 气 V 气 2. Therefore, Among them, V 气 : The velocity of gas in the mixing hole.

[0088] The water supply pipe 2 contains a mixture of liquid and gas, and the gas mixture is 10%. Therefore, the average density of the mixed gas fluid in the water supply pipe 2 is 0.9 times the original, and the pressure difference is also 0.9 times the original. Therefore, △P'=8ρ 水 Q2 / (πd 水 2)2×0.9=0.9△P.

[0089]

[0090] Therefore, the relationship between the diameter of the mixing hole, the mixing volume and the negative pressure difference △P is:

[0091]

[0092] The value of △P is about 1kPa, and the height difference pressure of the water head of 70Pa can be ignored.

[0093] △P≈P 0 -P 1 =8ρ 水 Q2 / (πd 水 2)2

[0094] Combining the two equations, we can derive the diameter ratio of the water pipe to the mixing aperture:

[0095] That is: d 水 / d 气 ≈16, where:

[0096] d 水 : The inner diameter of the water supply pipe 2;

[0097] d 气 : The diameter of the mixing hole.

[0098] Therefore, the inner diameter d of the water supply pipe 2 水 =3mm, the diameter of the mixing hole d 气 =0.188, take d 气 =0.2mm. Of course, the inner diameter d of the water supply pipe 2 水 When it is other values, the diameter of the mixing hole can change accordingly.

[0099] Therefore, in this embodiment, the inner diameter of the water supply pipe 2 is set to 3 mm, and the diameter of each mixing hole is 0.2 mm, which can meet the 10% change in the mixing volume. Figure 1In the example, the apertures of the first gas mixing hole 21 and the second gas mixing hole 22 of the water supply pipe 2 can be set to 0.2 mm. Considering the remaining water in the water tank 1 and the water in the water tank 1 not overflowing during water replenishment, the upper second gas mixing hole 22 can be opened at about 80% of the height of the water tank, and the lower first gas mixing hole 21 can be opened at about 30% of the height of the water tank.

[0100] In some embodiments of the present application, the water supply device may further include a heating chamber and a heating component. For example, in a toilet cleaning system, the heating chamber is connected to the output end of the water pump 3 so that the water output by the water pump 3 flows through the heating chamber, and the heating component is configured to heat the water flowing through the heating chamber; wherein the controller is configured to control the heating power of the heating component according to the operating current of the water pump 3.

[0101] When the water level in the water tank 1 is in different intervals, the flow rate of water in the water supply pipe 2 is different. For example, Figure 1 In the example, when the water level is below the first gas mixing hole 21, the operating current of the water pump 3 is in the first current range, at which time, the two gas mixing holes in the water supply pipe mix gas at the same time; when the water level is between the first gas mixing hole 21 and the second gas mixing hole 22, the operating current of the water pump 3 is in the second current range, at which time, the second gas mixing hole 22 of the water supply pipe 2 mixes gas; when the water level is above the second gas mixing hole 22, the operating current of the water pump 3 is in the third current range, at which time, the water supply pipe 2 does not mix gas, therefore, when the water level is in different intervals, the water flow rate output by the water pump 3 is different. Therefore, when the operating current of the water pump 3 is in the first current range, the heating component can be set to the first heating power, when the operating current of the water pump 3 is in the second current range, the heating component is heated at the second heating power, and when the operating current of the water pump 3 is in the third current range, the heating component is heated at the third heating power, wherein the first heating power, the second heating power and the third heating power increase in sequence.

[0102] An embodiment of the present application also provides a smart toilet, including a cleaning system, wherein the cleaning system includes the water supply device as described above.

[0103] Combine the following Figure 1 The use process of a toilet cleaning system in one embodiment is described.

[0104] The water tank 1 is initially in a full water state (ie, the liquid level is above the second gas mixing hole 22).

[0105] When cleaning starts, the water pump 3 pumps water from the water tank 1 , and the operating current of the water pump is within the third current range. The average current within the third current range is 176 mA.

[0106] The water level in the water tank 1 drops to the middle area (i.e., the liquid level is between the first mixing hole 21 and the second mixing hole 22), gas enters the second mixing hole 22, gas is mixed in the water supply pipe 2, and the operating current of the water pump 3 drops from the third current range to the second current range. The average current in the second current range is 154mA.

[0107] The water level drops to the water replenishment area (the liquid level is below the first gas mixing hole 21), gas enters the first gas mixing hole 21 and the second gas mixing hole 22, and the operating current of the water pump 3 drops to the first current range. The average current of the first current range is 126mA. The controller controls the control valve 5 on the water replenishment pipe 4 to open, so as to replenish water to the water tank 1;

[0108] When the water level in the water tank 1 rises to the middle zone, the first gas mixing hole 21 is submerged by water, and the operating current of the water pump 3 rises from the first current range to the second current range;

[0109] When the water level rises to the full water area, the second gas mixing hole 22 is submerged by water, the operating current of the water pump 3 rises from the second current range to the third current range, and the controller controls the control valve 5 on the water supply pipe 4 to close and stop water supply.

[0110] In the process that the operating current of the water pump 3 changes between the first current range, the second current range and the third current range, the heating power of the heating component of the cleaning system for heating the water flow also changes accordingly.

[0111] The embodiment of the present application also provides a control method for a water supply device, such as Figure 1 As shown, the water supply device comprises: a water tank 1, a water supply pipe 2, a water pump 3 and a water replenishing component; wherein one end of the water supply pipe 2 extends into the water tank 1, and the other end is connected to the water pump 3, so that the water pump 3 extracts water from the water tank 1, and at least one gas mixing hole is provided on the water supply pipe 2, and the position of each gas mixing hole corresponds to a predetermined water level of the water tank 1, and the water replenishing component is configured to replenish water to the water tank 1;

[0112] like Figure 2-Figure 4 As shown, the control method includes:

[0113] Obtain the operating current of water pump 3;

[0114] The water replenishment component is controlled according to the operating current of the water pump 3 to determine whether to replenish water to the water tank 1 .

[0115] Wherein, the controlling of whether the water replenishing component replenishes water to the water tank 1 according to the operating current of the water pump 3 may include:

[0116] Obtain the magnitude of the operating current of the water pump 3, and control the water replenishment component to replenish water to the water tank 1 according to the magnitude of the operating current; or, obtain the change in the operating current of the water pump 3 compared to the preset current value, and control the water replenishment component to replenish water to the water tank 1 according to the change.

[0117] In one embodiment, the at least one gas mixing hole includes a first gas mixing hole 21 and a second gas mixing hole 22, the first gas mixing hole 21 is located at a first water level of the water tank 1, and the second gas mixing hole 22 is located at a second water level of the water tank 1, and the second water level is higher than the first water level; wherein,

[0118] like Figure 3 As shown, the method of controlling whether the water replenishing component replenishes water to the water tank 1 according to the operating current of the water pump 3 includes:

[0119] Determine whether the operating current of the water pump 3 is within the first current range;

[0120] When the operating current is within the first current range, controlling the water replenishment component to start water replenishment;

[0121] Determine whether the operating current of the water pump 3 is within the third current range;

[0122] When the operating current is within the third current range, the water replenishing component is controlled to stop replenishing water.

[0123] In one embodiment, the at least one gas mixing hole includes a first gas mixing hole 21 and a second gas mixing hole 22, wherein the first gas mixing hole 21 is located at a first water level of the water tank 1, and the second gas mixing hole 22 is located at a second water level of the water tank 1, and the second water level is higher than the first water level; wherein

[0124] like Figure 4 As shown, the method of controlling whether the water replenishing component replenishes water to the water tank 1 according to the operating current of the water pump 3 includes:

[0125] Calculate the change of the operating current of the water pump 3 compared with the preset current value;

[0126] Determine whether the change amount is a negative value and exceeds a preset threshold value, and when the change amount is a negative value and exceeds the preset threshold value, control the water replenishment component to start water replenishment;

[0127] It is determined whether the change amount is a positive value and exceeds a preset threshold value, and when the change amount is a positive value and exceeds the preset threshold value, the water replenishing component is controlled to stop replenishing water.

[0128] An embodiment of the present application further provides an electronic device, including a processor and a memory, wherein the memory is configured to store instructions executable by the processor, and the processor is configured to execute the steps in the control method described above.

[0129] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all components may be implemented as software executed by a processor, such as a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those skilled in the art, the term "computer storage medium" includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0130] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0131] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include at least one of the features.

[0132] In the description of the present application, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0133] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0134] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0135] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0136] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A water supply device, characterized in that: It includes a water tank, a water supply pipe, a water pump, a water replenishment device and a controller; One end of the water supply pipe extends into the water tank, and the other end is connected to the water pump so that the water pump extracts water from the water tank. The water supply pipe is provided with at least one mixing hole, and the position of each mixing hole corresponds to a predetermined water level of the water tank. The water replenishing component is configured to replenish water to the water tank. The controller is configured to control whether the water replenishing component replenishes water to the water tank according to the operating current of the water pump.

2. The water supply device according to claim 1, characterized in that: The controller is configured to control whether the water replenishing component replenishes water to the water tank according to the magnitude of the operating current of the water pump; Alternatively, the controller is configured to control whether the water replenishing component replenishes water to the water tank according to a change in the operating current of the water pump compared to a preset current value.

3. The water supply device according to claim 1, characterized in that: The at least one gas mixing hole comprises a first gas mixing hole, and the first gas mixing hole is located at a first water level of the water tank; When the water level in the water tank drops below the first water level, the operating current of the water pump drops from the second current range to the first current range, and the controller controls the water replenishing component to start replenishing water.

4. The water supply device according to claim 3, characterized in that: The at least one gas mixing hole further comprises a second gas mixing hole, wherein the second gas mixing hole is located at a second water level of the water tank, and the second water level is higher than the first water level; When the water level in the water tank rises above the second water level, the operating current of the water pump rises from the second current range to the third current range, and the controller controls the water replenishing component to stop replenishing water.

5. The water supply device according to claim 4, characterized in that: The controller is configured to: control the water replenishing component to start replenishing water when it is detected that the value of the operating current of the water pump is within the first current range, and control the water replenishing component to stop replenishing water when it is detected that the operating current of the water pump is within the third current range; Alternatively, the controller is configured to: control the water replenishment component to start replenishing water when it is detected that the change in the operating current of the water pump compared to the preset current value is a negative value and exceeds a preset threshold value; and control the water replenishment component to stop replenishing water when it is detected that the change in the operating current of the water pump compared to the preset current value is a positive value and exceeds a preset threshold value; wherein the preset current value is within the second current range.

6. The water supply device according to claim 1, characterized in that: The ratio of the inner diameter of the water supply pipe to the aperture of the gas mixing hole is 15-18.

7. The water supply device according to any one of claims 1 to 6, characterized in that: It also includes a heating chamber and a heating component, wherein the heating chamber is connected to the output end of the water pump so that the water output by the water pump flows through the heating chamber, and the heating component is configured to heat the water flowing through the heating chamber; Wherein, the controller is configured to control the heating power of the heating component according to the operating current of the water pump.

8. An intelligent toilet, comprising a cleaning system, characterized in that: The cleaning system comprises a water supply device according to any one of claims 1-7.

9. A control method for a water supply device, characterized in that: The water supply device comprises: a water tank, a water supply pipe, a water pump and a water replenishing component; wherein one end of the water supply pipe extends into the water tank, and the other end is connected to the water pump, so that the water pump extracts water from the water tank, the water supply pipe is provided with at least one gas mixing hole, the position of each gas mixing hole corresponds to a predetermined water level of the water tank, and the water replenishing component is configured to replenish water to the water tank; The control method comprises: Obtaining the operating current of the water pump; The water replenishing component is controlled to replenish water to the water tank according to the operating current of the water pump.

10. The control method according to claim 9, characterized in that: The step of controlling whether the water replenishing component replenishes water to the water tank according to the operating current of the water pump comprises: Acquiring the magnitude of the operating current of the water pump, and controlling whether the water replenishing component replenishes water to the water tank according to the magnitude of the operating current; Alternatively, a change in the running current of the water pump compared to a preset current value is obtained, and the water replenishing component is controlled to replenish water to the water tank according to the change.

11. The control method according to claim 9, characterized in that: The at least one gas mixing hole comprises a first gas mixing hole and a second gas mixing hole, the first gas mixing hole is located at a first water level of the water tank, the second gas mixing hole is located at a second water level of the water tank, and the second water level is higher than the first water level; wherein The step of controlling whether the water replenishing component replenishes water to the water tank according to the operating current of the water pump comprises: Determining whether the operating current of the water pump is within a first current range; When the operating current is within a first current range, controlling the water replenishment component to start water replenishment; determining whether the operating current of the water pump is within a third current range; When the operating current is within the third current range, the water replenishing component is controlled to stop replenishing water.

12. The control method according to claim 10, characterized in that: The at least one gas mixing hole comprises a first gas mixing hole and a second gas mixing hole, the first gas mixing hole is located at a first water level of the water tank, the second gas mixing hole is located at a second water level of the water tank, and the second water level is higher than the first water level; wherein The step of controlling whether the water replenishing component replenishes water to the water tank according to the operating current of the water pump comprises: Calculate the change in the operating current of the water pump compared to the preset current value; When the change amount is a negative value and exceeds a preset threshold, the water replenishment component is controlled to start water replenishment; When the change amount is a positive value and exceeds a preset threshold, the water replenishing component is controlled to stop replenishing water.

13. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory is configured to store instructions executable by the processor, and the processor is configured to execute the steps in the control method according to any one of claims 9 to 12.

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