Washing equipment and detergent early warning control method and control device thereof

Abstract

The present invention relates to the technical field of washing equipment, and specifically provides a washing equipment and a detergent early warning control method and control device thereof, wherein the washing equipment includes a clothes processing tub and a detergent box assembly, wherein the detergent box assembly includes a detergent box, a liquid extraction pipe, and a connecting pipe, wherein the upper end of the connecting pipe is connected to the cavity, and the lower end of the connecting pipe is connected to an opening; the detergent early warning control method includes: obtaining operating parameters of the washing equipment; and providing early warning information indicating the need for detergent replenishment when a step change occurs in the operating parameters; wherein the operating parameters are parameters related to the density of the liquid in the liquid extraction pipe. Through such a setting, it is possible to seek to know whether detergent replenishment is needed. Through such a setting, with the help of a detergent box assembly with a specific structure, it is possible to know whether detergent replenishment is needed simply by a step change in the operating parameters.

Description

Technical Field

[0001] The present invention relates to the technical field of washing equipment, and in particular to a washing equipment and a detergent early warning control method and a control device thereof. Background Art

[0002] Washing machines, as household appliances, are popular with users because they can clean clothes without having to use hands. They are now widely available in almost every household. Washing clothes inevitably requires the use of various clothing treatment agents, such as detergents and softeners. For example, detergents must be added properly and accurately to ensure that clothes are properly cleaned. Accordingly, washing machines with automatic detergent dispensing functions that can ensure accurate dispensing are becoming increasingly popular.

[0003] The automatic detergent dispensing function relies on the washing machine's detergent box having sufficient detergent. Therefore, washing machines with automatic detergent dispensing typically include a detergent shortage warning system. For example, Chinese invention patent (CN111519390A) discloses a washing machine that specifically discloses the ability to notify a user if the amount of detergent contained in the detergent box is insufficient for the amount required for a selected operating program. The washing machine comprises: a detergent box that stores detergent dispensed into the washing drum by an automatic dispensing device; a box detector that detects the amount of detergent contained in the detergent box; an operating unit that receives a user operation for selecting any of multiple operating programs; a notification unit; and a control unit. If the control unit determines that the amount of detergent detected by the box detector is less than the amount required for the operating program selected by the user operation received by the operating unit, the control unit controls the notification unit to notify a user of insufficient detergent.

[0004] As can be seen, this document determines whether detergent is insufficient based on real-time detergent level monitoring. While this solution accurately reports detergent levels, it's unnecessary for washing machines. This is because, as a household appliance, a washing machine's insufficient or even depleted detergent level doesn't cause a complete breakdown or even a dangerous situation, like a car running out of fuel. Therefore, real-time monitoring of the detergent level to ensure sufficient detergent is unnecessary. In fact, it's sufficient to report the situation to the washing machine when there's a possibility of insufficient detergent (already insufficient or nearly insufficient).

[0005] Accordingly, this field requires a new technical solution to solve the above problems. Summary of the Invention

[0006] Technical issues

[0007] The present invention aims to solve the following problem in the prior art: it is not necessary for household appliances to detect the remaining amount of detergent in real time to ensure that the detergent is sufficient.

[0008] Technical Solution

[0009] A first aspect of the present invention provides a detergent early warning control method for a washing device, the washing device comprising a clothes processing tub and a detergent box assembly, the detergent box assembly comprising: a detergent box having a cavity formed therein, the cavity being capable of containing detergent, and the detergent box having an opening near its lower portion; and a liquid extraction pipe disposed in the detergent box, the first end of the liquid extraction pipe being connected to the opening for dispensing detergent into the clothes processing tub, the second end of the liquid extraction pipe being connected to the cavity for transferring detergent from the cavity to the liquid extraction pipe; wherein the detergent box is further provided with a connecting pipe having an angle with a horizontal direction, the upper end of the connecting pipe being connected to the cavity, and the lower end of the connecting pipe being connected to the opening; the detergent early warning control method comprising: obtaining operating parameters of the washing device; and providing early warning information indicating the need to replenish detergent when a step change occurs in the operating parameters; wherein the operating parameters are parameters related to the density of the liquid in the liquid extraction pipe.

[0010] With such an arrangement, it is possible to know whether detergent needs to be replenished simply by a step change in the operating parameters.

[0011] Thanks to the unique structure of the detergent box assembly, the present invention detects the need for detergent replenishment simply by observing a step change in operating parameters, eliminating the need for real-time detergent level monitoring. Specifically, the coordination between the liquid dispensing tube and the connecting tube within the detergent box ensures reliable detergent dispensing into the inner drum when the detergent level is sufficient. When the detergent level is insufficient, real-time detergent level monitoring is unnecessary; the structure itself can provide this information. Furthermore, by adjusting the height of the upper end of the connecting tube, the timing of notification of insufficient detergent levels can be flexibly controlled.

[0012] It should be noted that operating parameters are easier to obtain than real-time detection of the amount of detergent. For example, operating parameters are quantities included in a specific washing mode and are therefore available for recall at any time. Such as the speed of the motor, the specific washing stage, the operating time of the washing equipment, etc. In addition, under the premise of being able to reflect the density of the liquid in the liquid collection pipe, the operating parameters may include one or more parameters, which may be directly detected parameters or intermediate parameters calculated from directly detectable parameters, etc. Those skilled in the art may flexibly determine these parameters based on actual conditions. In addition, the early warning information may include sound and / or light information, etc., which those skilled in the art may flexibly select based on actual conditions.

[0013] For the above-mentioned detergent early warning control method, in one possible embodiment, the washing equipment includes a suction pump, and the second end of the liquid collection pipe is connected to the cavity so that the detergent can be transferred from the cavity to the liquid collection pipe with the help of the suction pump, and the operating parameters are the operating parameters of the suction pump.

[0014] Through such an arrangement, specific components for obtaining operating parameters on the washing device are provided.

[0015] Specifically, when the detergent level in the cavity is higher than the upper end of the connecting tube, the suction pump will dispense the detergent that has reached the opening into the clothing treatment tub. At this point, whether from the upper end of the connecting tube or from the second end of the liquid collection tube away from the opening, all that is transferred into the liquid collection tube through extraction is detergent, so the operating parameters of the suction pump (such as power, current, voltage, speed, impeller resistance, etc.) are basically stable. When the detergent level in the cavity drops to the upper end of the connecting tube and begins to be exposed to the air, the air in the cavity will enter through the upper end. In other words, the liquid transferred into the liquid collection tube through extraction will be mixed with bubbles, which will significantly reduce the density of the liquid in the liquid collection tube. The decrease in density will inevitably be accompanied by changes in the operating parameters of the suction pump. Therefore, by detecting the operating parameters of the suction pump, it is possible to promptly determine whether detergent needs to be replenished.

[0016] Regarding the above detergent early warning control method, in a possible implementation manner, the operating parameter is an operating current of the suction pump.

[0017] Through such settings, a specific form of operating parameters is given.

[0018] Specifically, when the detergent liquid level is higher than the upper end of the connecting tube, the power consumed by the suction pump is basically stable. Under normal circumstances, the supply voltage of the suction pump is constant, and the internal resistance of the suction pump motor and the resistance of the impeller in the suction pump (liquid resistance) are also constant, so the current and power can be described as basically stable. That is, when the voltage remains unchanged, the current flowing through the motor of the suction pump is basically stable. From the time the detergent liquid level drops to the same level as the upper end of the connecting tube, the density of the liquid is significantly reduced due to the presence of bubbles in the liquid transferred to the liquid collection tube. The reduction in density will significantly reduce the resistance of the impeller of the suction pump. Once the liquid resistance inevitably decreases, the current of the suction pump will decrease and the liquid flow rate will increase, and the two will quickly reach equilibrium. Since current is easier to measure and the value is more accurate, the jump in the current of the suction pump can more keenly determine whether detergent needs to be replenished.

[0019] Regarding the above-mentioned detergent early warning control method, in one possible embodiment, the connecting pipe is provided with a connecting structure near its upper end so that: when the liquid level of the detergent is not higher than the connecting structure, the gas in the cavity can enter the liquid extraction pipe through the upper end of the connecting pipe and the connecting structure respectively.

[0020] By setting it in this way, it is possible to better understand the fact that detergent needs to be replenished.

[0021] Specifically, once bubbles are mixed into the detergent, the fact that the detergent needs to be replenished can be known. Accordingly, a reminder mechanism can be used to ensure that the detergent is replenished in a timely manner. For example, the user can be informed only of the need to replenish the detergent, or the user can be further informed of the amount of detergent that needs to be replenished. However, there may be such a problem: suppose that the detergent is not replenished in a timely manner after the warning information is given. In such a case, the fact that the detergent needs to be replenished can be more clearly reflected by actively mixing more bubbles into the detergent, such as by providing a warning information that is compatible with the current density.

[0022] For example, the communication structure may be a plurality of strip-shaped holes or a plurality of communication holes provided on the first pipe section. In this way, as the liquid level drops, the number of communication holes that effectively transport detergent decreases, and more communication holes are converted to the function of only sucking air into the liquid collection pipe, thereby more accurately reflecting the degree of detergent deficiency.

[0023] Still taking the example of a plurality of communicating holes as the connecting structure, it is understood that the specific distribution area of ​​the communicating holes on the connecting pipe and the distribution density within the area can be flexibly selected by those skilled in the art based on actual conditions. For example, the density of the communicating holes can gradually increase as the liquid level drops, thereby highlighting the problem of detergent being missing.

[0024] For the above-mentioned detergent early warning control method, in one possible embodiment, the height of the upper end of the connecting end has the following characteristics: when the liquid level of the detergent contained in the cavity is flush with the height of the upper end of the connecting end, the amount of the detergent can meet the needs of at least one washing.

[0025] With such an arrangement, it is possible to obtain the fact that detergent needs to be replenished while the detergent supply can still meet the demand.

[0026] If the amount of detergent can meet the needs of one washing, it can be understood that: for a complete washing mode (such as the washing mode can be any washing mode or a selected washing mode, for example, the washing mode with the largest amount of detergent is selected), the remaining amount of detergent is roughly the same as the amount required for the washing mode.

[0027] In this state, the detergent can still be used for 2-3 washes. This way, even if the detergent level is low but still sufficient for normal use, the user can be notified through an early warning message that the detergent needs to be replenished, ensuring that the washing machine is replenished before the detergent runs out. For example, the remaining detergent can be sufficient to wash the nominal capacity (e.g., 10 kg) for 2-3 standard cycles.

[0028] Regarding the detergent early warning control method for the above-mentioned washing equipment, in one possible embodiment, the connecting pipe includes a first pipe section and a second pipe section arranged along its axial direction, the first pipe section is a pipe arranged in a vertical direction, and the second pipe section is accommodated inside the liquid collection pipe.

[0029] Through such an arrangement, a specific structural form of the connecting pipe is provided.

[0030] It is understood that the other structures of the connecting tube can be flexibly determined according to actual circumstances, such as straight tubes, curved tubes, special-shaped tubes, etc., and the diameter of the connecting tube along its axial direction can be evenly or unevenly distributed. In addition, the specific location where one end of the connecting tube is connected to the liquid collection tube can also be flexibly determined according to actual circumstances, such as being connected to the wall or end of the liquid collection tube.

[0031] Regarding the detergent early warning control method for the washing equipment, in a possible implementation manner, the axis of the second pipe section coincides with the axis of the liquid extraction pipe.

[0032] By setting it in this way, the fact that detergent needs to be replenished can be obtained more accurately.

[0033] Specifically, setting the second section of the connecting tube at the axis of the liquid collection tube not only reduces resistance, but also allows the bubbles and liquid to mix more evenly, thereby making the density change of the liquid doped with bubbles more stable. On this basis, the step change of the operating parameters can be more reliably obtained.

[0034] Regarding the detergent early warning control method for the washing equipment described above, in one possible implementation, the diameter of the first pipe section is smaller than the diameter of the liquid extraction pipe.

[0035] With this arrangement, when the detergent in the detergent box is insufficient but still usable, it is possible to minimize the impact on the continued use of the detergent.

[0036] Specifically, because the density of air is much lower than that of any liquid, such as detergent, a large amount of air will inevitably enter. If the diameter of the connecting pipe is too large, even if the detergent can still meet the demand, the excessive amount of air entering will seriously affect the normal liquid intake.

[0037] A second aspect of the present invention provides a control device, which includes a processor and a memory, wherein the memory is suitable for storing multiple program codes, and is characterized in that the program code is suitable for being loaded and run by the processor to execute any of the detergent warning control methods for washing equipment described above.

[0038] It can be understood that the control device has all the technical effects of the detergent early warning control method for washing equipment described in any of the above items, which will not be repeated here.

[0039] A third aspect of the present invention provides a washing device, comprising a control module, wherein the control module is capable of executing any one of the aforementioned detergent early warning control methods for the washing device.

[0040] It can be understood that the washing equipment has all the technical effects of the detergent early warning control method for washing equipment described in any of the above items, which will not be repeated here.

[0041] If the washing machine is equipped with a suction pump, the suction pump's liquid inlet is connected to the position corresponding to the opening of the detergent box, and the suction pump's liquid outlet can be connected to the clothing treatment tub. In this way, if the washing machine has an automatic detergent dispensing function, the detergent contained in the cavity can be dispensed into the clothing treatment tub according to the corresponding instructions of the washing machine's control module, thereby achieving clothing cleaning. In the event of insufficient detergent, the control module can provide a warning message by detecting a step change in the operating current of the suction pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be described below with reference to the accompanying drawings, in which the washing device is a pulsator washing machine.

[0043] Figure 1 A schematic structural diagram showing a detergent box assembly of a pulsator washing machine according to an embodiment of the present invention; and

[0044] Figure 2 A schematic flow chart illustrating a detergent early warning control method for a pulsator washing machine according to an embodiment of the present invention.

[0045] List of reference numerals:

[0046] 1. Suction tube; 2. Liquid collection tube; 3. Detergent box; 4. Connecting tube; 5. Detergent. DETAILED DESCRIPTION

[0047] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely intended to illustrate the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although this embodiment describes the detergent box assembly of the present invention in conjunction with a pulsator washing machine, it is clear that the detergent box assembly of the present invention can also be applied to other types of washing equipment, such as drum washing machines, washer-dryers, and multi-machine washing machines.

[0048] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In addition, to better illustrate the present invention, numerous specific details are provided in the following detailed description. Those skilled in the art will appreciate that the present invention can be practiced without some of these details. In some instances, stove principles well known to those skilled in the art are not described in detail in order to highlight the main points of the present invention.

[0050] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0051] A pulsator washing machine mainly includes a shell, an outer barrel fixedly arranged in the shell, and an inner barrel rotatably arranged in the outer barrel. A pulsator is provided at the bottom of the inner barrel, and the pulsator is equipped with a motor. The rotation of the motor drives the pulsator to rotate. The rotation of the pulsator stirs the water in the inner barrel. As the water stirs, the clothes soaked in the inner barrel rub against the water. During the friction process, the stains on the clothes can be removed. By adding detergent to the water, the degree of removal can be promoted, thereby completing the cleaning process of the clothes. Accordingly, the pulsator washing machine includes a detergent box assembly that dispenses detergent into the inner barrel, which is mainly used to dispense detergent into the inner barrel. In a washing machine with an automatic detergent dispensing function, the washing machine includes a control module. On the premise that the control module determines the amount of detergent currently required to be added, it controls the suction pump to dispense the required amount of detergent into the inner barrel, thereby achieving the cleaning process of the clothes.

[0052] Reference Figure 1 , Figure 1 A schematic structural diagram of a detergent box assembly of a pulsator washing machine according to an embodiment of the present invention is shown. Figure 1 As shown, the detergent box assembly mainly includes a suction pipe 1, a liquid collection pipe 2, a detergent box 3 and a connecting pipe 4. A cavity capable of holding detergent 5 is formed in the detergent box. The detergent box has an opening near its bottom. The suction pipe is arranged at the opening and is connected to a suction pump so that the suction pump can deliver the required amount of detergent into the inner barrel according to the control instructions of the control module, thereby achieving cleaning of clothes.

[0053] The liquid extraction pipe and the connecting pipe are both arranged in the detergent box, specifically:

[0054] In this embodiment, the liquid extraction tube is a straight tube (e.g., a straight tube with a circular cross-section) located at the bottom of the detergent box. The left end of the straight tube precisely connects to the suction tube at the opening. Because the axial dimension of the tube does not fully cover the cavity, the right end of the tube allows detergent to enter the liquid extraction tube. In other words, under the action of the suction pump, the detergent in the cavity can be transferred into the liquid extraction tube through the right end of the liquid extraction tube and further dispensed into the inner drum as needed. In this way, based on the instructions of the control module, the suction pump can dispense the detergent contained in the cavity into the inner drum in a measured amount.

[0055] In this embodiment, the connecting pipe 4 includes a first pipe section arranged vertically and a second pipe section arranged horizontally, wherein the second pipe section is completely contained in the liquid collection pipe and the axes of the two are collinear. The reason for such arrangement is that the lower port of the connecting pipe is arranged at the axis of the liquid collection pipe. In addition to increasing the liquid flow rate at the pipe opening of the connecting pipe to generate negative pressure, it can also make the bubbles and detergent mix more evenly when gas enters the liquid collection pipe, thereby achieving a more stable change in liquid density. In this way, it is easier to obtain the value when measuring the operating current of the suction pump below. A portion of the first pipe section extends into the liquid collection pipe to connect with the second pipe section, and the two roughly form a J-shaped pipe. In one possible embodiment, during installation, a small hole is provided on the wall of the liquid collection pipe, and the first pipe section is inserted into and sealed and fixed on the wall of the liquid collection pipe.

[0056] The diameter of the connecting tube should be significantly smaller than that of the liquid dispensing tube, for example, less than or equal to 1 / 10 of the diameter. This is because when air enters the connecting tube, it inevitably draws in a significant amount of air, as its density is much lower than that of any liquid, such as detergent. If the connecting tube diameter is too large, even if the detergent still meets demand, the excessive amount of air entering can severely impact the normal liquid dispensing rate.

[0057] As can be seen, in the detergent box assembly of the present invention, the liquid dispensing tube functions as both a detergent transfer mechanism and a mounting support for the connecting tube. This structure allows for the dispensing of detergent when the detergent supply is sufficient. Furthermore, when the detergent supply is low, this structural combination provides a timely warning indicating the need for refilling.

[0058] Reference Figure 2 , Figure 2 The figure shows a flow chart of a detergent early warning control method for a pulsator washing machine according to an embodiment of the present invention. Figure 2 As shown, the early warning control method mainly includes the following steps:

[0059] S21, the control module issues a control instruction to dispense detergent into the inner tub according to the washing demand;

[0060] S22, the suction pump dispenses detergent into the inner tub according to the operating parameters corresponding to the control instruction;

[0061] S23, determining whether the operating current has a step change, if so, it indicates that detergent needs to be replenished, and executing S24; if not, it indicates that detergent does not need to be replenished, and executing S25;

[0062] S24. When a step change occurs in the operating current, a warning message is given indicating that detergent needs to be replenished. For example, the warning message is a voice announcement informing the user that detergent needs to be replenished;

[0063] S25. When there is no step change in the operating current, the suction pump stops running after the detergent is dispensed.

[0064] When the liquid level of the detergent is higher than the upper end of the connecting tube, since what is transferred into the liquid collection tube through the extraction pump is detergent, regardless of whether it is from the upper end of the connecting tube or from the right end of the liquid collection tube, the power consumed by the suction pump is basically stable when other parameters remain unchanged. Normally, the power supply voltage of the suction pump is constant, and the internal resistance of the motor and the resistance of the impeller of the suction pump are also constant, so it can be described as the operating current and power are basically stable.

[0065] When the detergent level reaches the top of the connecting pipe, the suction pump continues to operate according to the control command's operating parameters. Because the liquid transferred to the liquid extraction pipe contains bubbles, the liquid's density decreases significantly. This decrease in liquid density is accompanied by a decrease in liquid resistance and a significant decrease in the suction pump's operating current. Therefore, a step change in current can be used to determine whether the detergent level has reached the top of the vertical section of the connecting pipe.

[0066] It can be understood that the step change here should be understood as: assuming that there is sufficient detergent, the operating current of the suction pump corresponding to the control instruction is certain, but when the detergent is insufficient, the operating current undergoes abnormal changes and this change is more obvious.

[0067] As can be seen, in the washing machine of the present invention, the detergent box assembly includes a liquid extraction pipe and a connecting pipe. While ensuring a sufficient amount of detergent, the assembly can reliably dispense detergent into the inner tub. When the amount of detergent is insufficient, real-time detergent level monitoring is unnecessary. Instead, the assembly's inherent structure allows the system to detect insufficient detergent when the suction pump's operating current undergoes a step change. Furthermore, by adjusting the height of the connecting pipe's upper end, the timing of notification of insufficient detergent levels can be flexibly determined.

[0068] The aforementioned control module can be used to execute the aforementioned detergent early warning control method at the same time. In the description of the present invention, the "control module" may include hardware, software or a combination of the two. A module may include hardware circuits, various suitable sensors, communication ports, memories, and may also include software parts, such as program codes, or a combination of software and hardware. The processor may be a central processing unit, a microprocessor, an image processor, a digital signal processor or any other suitable processor. The processor has data and / or signal processing functions. The processor can be implemented in software, hardware or a combination of the two. Non-temporary computer-readable storage media include any suitable media that can store program codes, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, etc.

[0069] It will be understood by those skilled in the art that the present invention can implement all or part of the processes in its control method by instructing related hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, it can implement the steps of the above-mentioned various method embodiments. The computer program includes computer program code, which can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can include: any entity or device, medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory, random access memory, electric carrier signal, telecommunication signal and software distribution medium that can carry the computer program code. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0070] Furthermore, it should be understood that since the control module is merely used to illustrate the functional units of the system of the present invention, the physical device corresponding to the control module may be the processor itself, or a portion of the software in the processor, a portion of the hardware, or a combination of software and hardware. Therefore, the number of control modules is one for illustrative purposes only.

[0071] Those skilled in the art will appreciate that the control module can be adaptively split based on actual circumstances. The specific splitting of the control module does not cause the technical solution to deviate from the principles of the present invention. Therefore, all technical solutions after splitting will fall within the scope of protection of the present invention. For example, in this embodiment, the control module not only sends control instructions to the suction pump but also generates warning information based on the operating current of the suction pump. Obviously, the control module can be split into two independent modules.

[0072] It should be pointed out that although the various steps in the above embodiments are described in a specific order, those skilled in the art will understand that in order to achieve the effects of the present invention, different steps do not have to be performed in such an order. They can be performed simultaneously or in other orders, and certain steps can also be added, replaced or omitted. These changes are all within the scope of protection of the present invention.

[0073] It should be noted that although the detergent early warning control method constructed by combining the above-mentioned specific structure of the detergent box assembly with the above-mentioned specific method is described as an example, those skilled in the art will understand that the present invention is not limited to this. In fact, users can flexibly adjust the relevant structures, steps, and parameters in the steps according to actual application scenarios.

[0074] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A detergent early warning control method for washing equipment, characterized in that: The washing device comprises a laundry treatment tub and a detergent box assembly, the detergent box assembly comprising: a detergent box having a cavity formed therein for containing detergent, and having an opening near a lower portion of the detergent box; and a liquid extraction pipe, which is disposed in the detergent box, wherein a first end of the liquid extraction pipe is in communication with the opening so as to dispense detergent into the laundry treatment tub; a suction pump, wherein the second end of the liquid extraction pipe is in communication with the cavity so as to transfer the detergent from the cavity to the liquid extraction pipe by means of the suction pump; The detergent box is further provided with a connecting pipe having an angle with the horizontal direction, the upper end of the connecting pipe is connected to the cavity, and the lower end of the connecting pipe is connected to the opening; The detergent early warning control method comprises: Obtaining operating parameters of the washing equipment; In the event of a step change in the operating parameters, an early warning message indicating the need to replenish detergent is given; Wherein, the operating parameter is an operating parameter of the suction pump, and the operating parameter is a parameter related to the density of the liquid in the liquid collection pipe; The connecting pipe includes a first pipe section and a second pipe section arranged along its axial direction. The first pipe section is a pipe arranged in the vertical direction. The second pipe section is accommodated inside the liquid collection pipe. The axis of the second pipe section coincides with the axis of the liquid collection pipe.

2. The detergent early warning control method according to claim 1, characterized in that: The operating parameter is the operating current of the suction pump.

3. The detergent early warning control method according to claim 2, characterized in that: The connecting pipe is provided with a communication structure near its upper end so as to: In the case where the liquid level of the detergent is not higher than the communicating structure, the gas in the cavity can enter the liquid extraction pipe through the upper end of the connecting pipe and the communicating structure respectively.

4. The detergent early warning control method according to claim 2, characterized in that: The height of the upper end of the connecting pipe has the following characteristics: When the liquid level of the detergent contained in the cavity is flush with the height of the upper end of the connecting pipe, the amount of the detergent can meet the needs of at least one washing.

5. The detergent early warning control method according to claim 1, characterized in that: The diameter of the first pipe section is smaller than the diameter of the liquid extraction pipe.

6. A control device comprising a processor and a memory, wherein the memory is adapted to store a plurality of program codes, wherein: The program code is suitable for being loaded and run by the processor to execute the detergent early warning control method for a washing device according to any one of claims 1 to 5.

7. A washing device, characterized in that: The washing device comprises a control module, and the control module is capable of executing the detergent early warning control method for the washing device according to any one of claims 1 to 5.

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