DRAINAGE PUMP AND CONTROL METHOD THEREFOR, AND CONTROLLER, AIR CONDITIONER AND STORAGE MEDIUM

Abstract

 A drainage pump and a control method therefor, and a controller, an air conditioner and a storage medium. The control method for a drainage pump includes: (5110) detecting a first power supply parameter of a drainage pump under a current state; (S120) determining a full-load power supply parameter and a no-load power supply parameter corresponding to the current state; and (S130) when the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, adjusting the current state until the first power supply parameter is equal to the full-load power supply parameter.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present application claims priority to Chinese Patent Application No. 202311438162.9, filed on October 31, 2023, and entitled "DRAINAGE PUMP AND CONTROL METHOD THEREFOR, AND CONTROLLER, AIR CONDITIONER AND STORAGE MEDIUM," the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of air conditioners, and in particular, to a drainage pump, a control method therefor, a controller, an air conditioner, and a storage medium.

BACKGROUND

[0003] In the related art, a drainage pump is a critical component of an indoor unit of an air conditioner, serving to discharge condensed water from the indoor unit to the outdoors through a designed drainage pipe. Drainage pumps used in air conditioners are broadly classified into AC drainage pumps and DC drainage pumps. Due to advantages such as reduced vibration, small size, and low suction noise, DC drainage pumps are gradually replacing AC drainage pumps. However, regardless of whether it is an AC drainage pump or a DC drainage pump, both operate at a constant rotational speed.

[0004] Since the rotational speed of a current drainage pump is constant, the pressure it generates remains. When it reaches the critical water intake state (i.e., no water can be drawn upward), the water column on the discharge side cannot flow back into a water collection tray, and the water on the intake side cannot be drawn in. As a result, the volume of air trapped inside the pump increases, forcing the pump to operate in a persistent gas-liquid two-phase regime. This condition significantly amplifies the operating noise of the drainage pump, ultimately leading to user complaints.

SUMMARY

[0005] The present disclosure aims to at least partially solve one of the technical problems existing in the related art. To this end, the present disclosure provides a drainage pump and a control method therefor, a controller, an air conditioner, and a storage medium.

[0006] In accordance with a first aspect of the present disclosure, an embodiment provides a control method for a drainage pump, comprising: detecting a first power supply parameter of the drainage pump under a current state; determining a full-load power supply parameter and a no-load power supply parameter corresponding to the current state; and when the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, adjusting the current state until the first power supply parameter is equal to the full-load power supply parameter.

[0007] According to some embodiments of the present disclosure, after determining the full-load power supply parameter and the no-load power supply parameter corresponding to the current state, the control method further comprises: when the first power supply parameter equals the no-load power supply parameter or the full-load power supply parameter, maintaining operation of the drainage pump in the current state.

[0008] According to some embodiments of the present disclosure, the adjusting the current state comprises: adjusting the current state to a target state, and obtaining a second power supply parameter of the drainage pump under the target state; determining a parameter variation magnitude of the second power supply parameter relative to the first power supply parameter; and adjusting the current state on the basis of the parameter variation magnitude.

[0009] According to some embodiments of the present disclosure, the adjusting the current state on the basis of the parameter variation magnitude comprises: determining a comparison result between the parameter variation magnitude and a preset variation magnitude; and adjusting the current state on the basis of the comparison result. According to some embodiments of the present disclosure, the adjusting the current state on the basis of the comparison result comprises one of the following: when the comparison result indicates that the parameter variation magnitude is less than the preset variation magnitude, reducing a head or a rotational speed of the drainage pump; or when the comparison result indicates that the parameter variation magnitude is greater than or equal to the preset variation magnitude, increasing the head or the rotational speed of the drainage pump.

[0010] According to some embodiments of the present disclosure, the control method further comprises: receiving a water-full protection signal; and increasing the head or the rotational speed of the drainage pump in accordance with the water-full protection signal.

[0011] According to some embodiments of the present disclosure, following the increasing the head or the rotational speed of the drainage pump in accordance with the water-full protection signal, the control method comprises: acquiring a duration of the water-full protection signal; and when the duration reaches a first preset duration, controlling the drainage pump to stop and generating a fault prompt message.

[0012] According to some embodiments of the present disclosure, the control method further comprises: receiving a stop signal, and controlling the drainage pump to maintain operation in accordance with the stop signal; and once the first power supply parameter is no longer equal to the full-load power supply parameter, reducing the rotational speed of the drainage pump by a preset adjustment step until the rotational speed of the drainage pump is reduced to zero within a second preset duration.

[0013] According to some embodiments of the present disclosure, the detecting the first power supply parameter of the drainage pump under the current state comprises: detecting the first power supply parameter of the drainage pump after the drainage pump is controlled to operate under the current state for a third preset duration.

[0014] According to some embodiments of the present disclosure, the current state comprises a current head or a current rotational speed.

[0015] In accordance with a second aspect of the present disclosure, an embodiment provides a controller, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor, when executing the computer program, carries out the method for controlling a drainage pump as described in the first aspect of the present disclosure.

[0016] In accordance with a third aspect of the present disclosure, an embodiment provides a drainage pump, comprising the controller as described in the second aspect of the present disclosure.

[0017] In accordance with a fourth aspect of the present disclosure, an embodiment provides an air conditioner, comprising the drainage pump as described in the third aspect of the present disclosure.

[0018] In accordance with a fifth aspect of the present disclosure, an embodiment provides a computer-readable storage medium having a computer-executable instruction stored thereon, the computer-executable instruction being configured to, when executed, carry out the above-described method for controlling a drainage pump as described in the first aspect of the present disclosure.

[0019] Additional aspects and advantages of the present disclosure will be set forth in part in the description which follows, and in part will become apparent from the description, or may be learned by practice of the present disclosure.

BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings are provided to facilitate a further understanding of the technical schemes of the present disclosure and constitute a part of the description. Together with the embodiments of the present disclosure, they serve to explain the technical schemes of the present disclosure and do not constitute a limitation on the technical schemes of the present disclosure.

FIG. 1 is a flowchart of a control method for a drainage pump according to an embodiment of the present disclosure;

FIG. 2 is a flowchart of a control method for a drainage pump according to another embodiment of the present disclosure;

FIG. 3 is a flowchart of a control method for a drainage pump according to another embodiment of the present disclosure;

FIG. 4 is a flowchart of a control method for a drainage pump according to another embodiment of the present disclosure;

FIG. 5 is a flowchart of a control method for a drainage pump according to another embodiment of the present disclosure;

FIG. 6 is a flowchart of a control method for a drainage pump according to another embodiment of the present disclosure;

FIG. 7 is an overall flowchart of a control method for a drainage pump according to an embodiment of the present disclosure; and

FIG. 8 is a schematic structural diagram of a controller for executing the control method for a drainage pump according to an embodiment of the present disclosure.

DETAILED DESCRIPTION

[0021] Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, where identical or similar reference numerals throughout denote identical or similar elements or elements having identical or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, are intended only to explain the present disclosure, and are not to be construed as a limitation on the present disclosure.

[0022] In the description of the present disclosure, it should be understood that orientation or positional relationships indicated by terms such as "upper," "lower," "front," "rear," "left," "right," and the like are based on the orientation or positional relationships shown in the drawings, and are used merely for convenience in describing the present disclosure and simplifying the description. These terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present disclosure.

[0023] In the description of the present disclosure, "several" means one or more, "multiple (plurality of)" means two or more, "greater than," "less than," "exceeding," and the like are understood as excluding the given number, while "above," "below," "within," and the like are understood as comprising the given number. Any reference to "first," "second," and the like is used merely for distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly indicating the number of the indicated technical features, or implicitly indicating the order of precedence of the indicated technical features.

[0024] In the description of the present disclosure, unless otherwise expressly limited, terms such as "disposed," "mounted," "connected," and the like should be understood in a broad sense. A person skilled in the art can reasonably determine the specific meanings of these terms in the present disclosure based on the specific context of the technical schemes.

[0025] A drainage pump is a critical component of an indoor unit of an air conditioner, serving to discharge condensed water from the indoor unit to the outdoors through a designed drainage pipe. Drainage pumps used in air conditioners are broadly classified into AC drainage pumps and DC drainage pumps. Due to advantages such as reduced vibration, small size, and low suction noise, DC drainage pumps are gradually replacing AC drainage pumps. However, regardless of whether it is an AC drainage pump or a DC drainage pump, both operate at a constant rotational speed.

[0026] In some situations, since the rotational speed of a current drainage pump is constant, the pressure it generates remains constant. When it reaches the critical water intake state (i.e., no water can be drawn upward), the water column on the discharge side cannot flow back into a water collection tray, and the water on the intake side cannot be drawn in. As a result, the volume of air trapped inside the pump increases, forcing the pump to operate in a persistent gas-liquid two-phase regime. This condition significantly amplifies the operating noise of the drainage pump, ultimately leading to user complaints.

[0027] Based on the above situation, embodiments of the present disclosure propose a drainage pump, a control method therefor, a controller, an air conditioner, and a storage medium, aiming to reduce the operating noise of the drainage pump.

[0028] Various embodiments of the control method for a drainage pump of the present disclosure are further elaborated below with reference to the accompanying drawings.

[0029] As shown in FIG. 1, FIG. 1 is a flowchart of a control method for a drainage pump according to an embodiment of the present disclosure. The control method for a drainage pump may comprise, but is not limited to, steps S110, S120, and S130.

Step S110: detecting a first power supply parameter of the drainage pump under a current state;

Step S120: determining a full-load power supply parameter and a no-load power supply parameter corresponding to the current state;

Step S130: when the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, adjusting the current state until the first power supply parameter is equal to the full-load power supply parameter.

[0030] In an embodiment, after the drainage pump operates, firstly, a first power supply parameter of the drainage pump under a current state is detected; next, a full-load power supply parameter and a no-load power supply parameter of the drainage pump are determined, where the full-load power supply parameter and the no-load power supply parameter correspond to the current state; then, when the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, the current state is adjusted until the first power supply parameter equals the full-load power supply parameter. Therefore, the embodiment enables a comparison between the real-time first power supply parameter of the drainage pump and its full-load and no-load power supply parameters. In a case that the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, it can be considered that the drainage pump is currently in a critical water intake state. In this regard, this embodiment may adjust the operating state of the drainage pump to return it to the full-load drainage state. This adjustment significantly reduces the operating noise of the drainage pump and, consequently, minimizes user complaints.

[0031] It should be noted that if the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, it can be considered that the drainage pump is currently in a critical water intake state. Should this condition remain unaddressed and the pump continues to operate under its current drainage state, the operating noise of the drainage pump will increase, which may subsequently lead to user complaints.

[0032] It should be noted that if the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, it can be considered that the drainage pump is currently in a critical water intake state. In such a case, the current state is adjusted until the first power supply parameter equals the full-load power supply parameter. As a result, the drainage pump returns to the full-load drainage state, thereby significantly reducing the operating noise of the drainage pump and minimizing user complaints.

[0033] Specifically, after determining the full-load power supply parameter and the no-load power supply parameter corresponding to the current state, the control method for a drainage pump further comprises, but is not limited to, the following situation:
First situation: when the first power supply parameter equals the no-load power supply parameter or the full-load power supply parameter, maintaining operation of the drainage pump in the current state.

[0034] In an embodiment, the drainage pump starts operating, once the corresponding full-load power supply parameter and the corresponding no-load power supply parameter are determined on the basis of the current state, if the first power supply parameter equals the no-load power supply parameter or the full-load power supply parameter, the drainage pump may be controlled to maintain its current operating state, as the operating noise at that point is low. Therefore, this embodiment enables a comparison between the real-time first power supply parameter of the drainage pump and its full-load and no-load power supply parameters. If the first power supply parameter is equal to the no-load power supply parameter or the full-load power supply parameter, it can be considered that the drainage pump is currently in a no-load drainage state or a full-load drainage state. In this regard, by determining whether the first power supply parameter equals the no-load power supply parameter or the full-load power supply parameter, this embodiment allows the drainage pump to maintain operation in the current state in either the no-load drainage state or the full-load drainage state, thereby keeping the operating noise of the drainage pump low.

[0035] It should be noted that when the first power supply parameter equals the no-load power supply parameter, it can be considered that the drainage pump is currently in a no-load drainage state, and controlling the drainage pump to maintain operation in the current state keeps the operating noise low. When the first power supply parameter equals the full-load power supply parameter, it can be considered that the drainage pump is currently in a full-load drainage state, and controlling the drainage pump to maintain operation in the current state also keeps the operating noise low. As such, user complaints can be minimized.

[0036] As shown in FIG. 2, FIG. 2 is a flowchart of a control method for a drainage pump according to another embodiment of the present disclosure. Regarding the adjusting the current state in the aforementioned step S130, it may comprise, but is not limited to, steps S210, S220, and S230.

Step S210: adjusting the current state to a target state, and obtaining a second power supply parameter of the drainage pump under the target state;

Step S220: determining a parameter variation magnitude of the second power supply parameter relative to the first power supply parameter;

Step S230: adjusting the current state on the basis of the parameter variation magnitude.

[0037] In an embodiment, after the drainage pump operates, if the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, the drainage pump is first adjusted from the current state to a target state, and a corresponding second power supply parameter of the drainage pump is obtained under the target state. Next, the second power supply parameter is compared with the first power supply parameter to obtain a parameter variation magnitude of the second power supply parameter relative to the first power supply parameter. Then, the current state is adjusted on the basis of the determined parameter variation magnitude. The adjustment of the current state of the drainage pump continues until the first power supply parameter is equal to the full-load power supply parameter. Accordingly, the present embodiment is capable of adjusting the state of the drainage pump when it is in a critical water intake state, and is further capable of adjusting the current state on the basis of the parameter variation magnitude. In this regard, this embodiment may adjust the operating state of the drainage pump to return it to the full-load drainage state. This adjustment significantly reduces the operating noise of the drainage pump and, consequently, minimizes user complaints.

[0038] It should be noted that the first power supply parameter and the second power supply parameter mentioned above are obtained through real-time detection. By comparing the first power supply parameter with the second power supply parameter, the parameter variation magnitude can be obtained, and the current state can be adjusted on the basis of the parameter variation magnitude. The current state of the drainage pump is adjusted until the first power supply parameter equals the full-load power supply parameter, thereby returning the drainage pump to the full-load drainage state, which significantly reduces the operating noise of the drainage pump and, consequently, minimizes user complaints.

[0039] As shown in FIG. 3, FIG. 3 is a flowchart of a control method for a drainage pump according to another embodiment of the present disclosure. Regarding the adjusting the current state on the basis of the parameter variation magnitude in the aforementioned step S230, it may comprise, but is not limited to, steps S310 and S320.

Step S310: determining a comparison result between the parameter variation magnitude and a preset variation magnitude;

Step S320: adjusting the current state on the basis of the comparison result.

[0040] In an embodiment, after the drainage pump operates, if the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, the drainage pump is first adjusted from the current state to a target state, and a corresponding second power supply parameter of the drainage pump is obtained under the target state. Next, the second power supply parameter is compared with the first power supply parameter to obtain a parameter variation magnitude of the second power supply parameter relative to the first power supply parameter. Then, the parameter variation magnitude is compared with a preset variation magnitude to obtain a comparison result. Finally, the current state is adjusted on the basis of the comparison result. The adjustment of the current state of the drainage pump continues until the first power supply parameter is equal to the full-load power supply parameter. Accordingly, the present embodiment is capable of adjusting the state of the drainage pump when it is in a critical water intake state, and is further capable of adjusting the current state on the basis of the comparison result between the parameter variation magnitude and the preset variation magnitude. In this regard, this embodiment may adjust the operating state of the drainage pump to return it to the full-load drainage state. This adjustment significantly reduces the operating noise of the drainage pump and, consequently, minimizes user complaints.

[0041] It should be noted that comparing the parameter variation magnitude with the preset variation magnitude yields a comparison result, and the current state is adjusted according to this comparison result. The current state of the drainage pump is adjusted until the first power supply parameter equals the full-load power supply parameter, thereby enabling the drainage pump to return to the full-load drainage state, which significantly reduces the operating noise of the drainage pump and, consequently, minimizes user complaints.

[0042] Specifically, the adjusting the current state on the basis of the comparison result may be divided into the following situations:

First situation: when the comparison result indicates that the parameter variation magnitude is less than the preset variation magnitude, reducing a head or a rotational speed of the drainage pump;

Second situation: when the comparison result indicates that the parameter variation magnitude is greater than or equal to the preset variation magnitude, increasing the head or the rotational speed of the drainage pump.

[0043] In an embodiment, after the drainage pump operates, if the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, the drainage pump is first adjusted from the current state to a target state, and a corresponding second power supply parameter of the drainage pump is obtained under the target state. Next, the second power supply parameter is compared with the first power supply parameter to obtain a parameter variation magnitude of the second power supply parameter relative to the first power supply parameter. Then, the parameter variation magnitude is compared with a preset variation magnitude to obtain a comparison result. Finally, if the comparison result indicates that the parameter variation magnitude is less than the preset variation magnitude, the head or the rotational speed of the drainage pump is reduced. If the comparison result indicates that the parameter variation magnitude is greater than or equal to the preset variation magnitude, the head or the rotational speed of the drainage pump is increased. The adjustment of the head or the rotational speed of the drainage pump continues until the first power supply parameter is equal to the full-load power supply parameter. Accordingly, the present embodiment is capable of adjusting the state of the drainage pump when it is in a critical water intake state, and is further capable of adjusting the head or the rotational speed of the drainage pump on the basis of the comparison result between the parameter variation magnitude and the preset variation magnitude. In this regard, this embodiment may adjust the operating state of the drainage pump to return it to the full-load drainage state. This adjustment significantly reduces the operating noise of the drainage pump and, consequently, minimizes user complaints.

[0044] It should be noted that if the comparison result indicates that the parameter variation magnitude is less than the preset variation magnitude, it can be considered that a water inlet of the drainage pump is currently unable to draw water. In response to this situation, the head or the rotational speed of the drainage pump is reduced. As a result, the rotational speed of the drainage pump decreases, and consequently the drainage rate decreases, thereby accelerating the rise of the water level at the water inlet of the drainage pump. The adjustment of the head or the rotational speed of the drainage pump continues until the first power supply parameter is equal to the full-load power supply parameter. Consequently, the drainage pump returns to the full-load drainage state, thereby significantly reducing the operating noise of the pump and minimizing user complaints.

[0045] It should be noted that if the comparison result indicates that the parameter variation magnitude is greater than or equal to the preset variation magnitude, it can be considered that the water inlet of the drainage pump can be submerged for water intake. In response to this situation, the head or the rotational speed of the drainage pump is increased. As a result, the rotational speed of the drainage pump increases, and consequently the drainage rate increases, thereby enabling normal drainage on the drainage side. The adjustment of the head or the rotational speed of the drainage pump continues until the first power supply parameter is equal to the full-load power supply parameter. Consequently, the drainage pump returns to the full-load drainage state, thereby significantly reducing the operating noise of the pump and minimizing user complaints.

[0046] It is understandable that when the head or the rotational speed of the drainage pump increases, the rotational speed of the drainage pump rises, and the drainage rate increases, and when the head or the rotational speed of the drainage pump decreases, the rotational speed of the drainage pump drops, and the drainage rate decreases.

[0047] As shown in FIG. 4, FIG. 4 is a flowchart of a control method for a drainage pump according to another embodiment of the present disclosure. The control method for a drainage pump may comprise, but is not limited to, steps S410 and S420.

Step S410: receiving a water-full protection signal;

Step S420: increasing the head or the rotational speed of the drainage pump in accordance with the water-full protection signal.

[0048] In an embodiment, after the drainage pump operates, firstly, a water-full protection signal is received. Then, the head or the rotational speed of the drainage pump is increased in accordance with the water-full protection signal. Accordingly, the present embodiment is capable of detecting whether the drainage pump is in a water-full state. When the water-full protection signal is received, the head or the rotational speed of the drainage pump is increased. In this way, the present embodiment can reduce the occurrence of water overflow from the water collection tray by adjusting the head of the drainage pump.

[0049] As shown in FIG. 5, FIG. 5 is a flowchart of a control method for a drainage pump according to another embodiment of the present disclosure. Following the increasing the head or the rotational speed of the drainage pump in accordance with the water-full protection signal in the aforementioned step S420, the method may comprise, but is not limited to, steps S510 and S520.

Step S510: acquiring a duration of the water-full protection signal;

Step S520: when the duration reaches a first preset duration, controlling the drainage pump to stop and generating a fault prompt message.

[0050] In an embodiment, after the pump operates, firstly, a water-full protection signal is received. Next, the head or the rotational speed of the drainage pump is increased in accordance with the water-full protection signal. Then, the duration of the water-full protection signal is acquired. Finally, if the duration of the water-full protection signal equals a first preset duration, the drainage pump is controlled to stop, and the fault prompt message is generated. Accordingly, the present embodiment is capable of determining whether a fault has occurred in the drainage pump based on the duration of the water-full protection signal. If the drainage pump is in a fault state, the fault prompt message is generated. Therefore, the efficiency of resolving drainage pump faults can be improved, thereby avoiding the issue of high operating noise when the drainage pump is operating in a fault state and minimizing user complaints.

[0051] It should be noted that if the duration of the water-full protection signal reaches the first preset duration, it can be considered that the drainage pump is in a fault state. Therefore, the drainage pump is controlled to stop, and the fault prompt message is generated. Therefore, the efficiency of resolving drainage pump faults can be improved, thereby avoiding the issue of high operating noise when the drainage pump is operating in a fault state and minimizing user complaints.

[0052] As shown in FIG. 6, FIG. 6 is a flowchart of a control method for a drainage pump according to another embodiment of the present disclosure. The control method for a drainage pump may comprise, but is not limited to, steps S610 and S620.

Step S610: receiving a stop signal, and controlling the drainage pump to maintain operation in accordance with the stop signal;

Step S620: once the first power supply parameter is no longer equal to the full-load power supply parameter, reducing the rotational speed of the drainage pump by a preset adjustment step until the rotational speed of the drainage pump is reduced to zero within a second preset duration.

[0053] In an embodiment, after the drainage pump operates, firstly, a stop signal is received, and the drainage pump is controlled, in accordance with the stop signal, to maintain operation at a current rotational speed. Next, when the first power supply parameter is no longer equal to the full-load power supply parameter, the rotational speed of the drainage pump is adjusted by a preset adjustment step to reduce its rotational speed, and the rotational speed of the drainage pump is reduced to zero within a second preset duration. Therefore, upon receiving the stop signal, the present embodiment is capable of controlling the drainage pump to maintain operation at the current rotational speed so that the first power supply parameter does not equal to the full-load power supply parameter, and is further capable of adjusting the rotational speed of the drainage pump by the preset adjustment step. In this way, this embodiment can reduce the rotational speed of the drainage pump on the basis of the preset adjustment step, reducing it to zero within the second preset duration, thereby enabling the water in an outlet section of the drainage pump to flow back gradually, avoiding backflow noise caused by sudden backflow, and minimizing user complaints.

[0054] It should be noted that after receiving the stop signal, if the drainage pump is controlled to maintain operation at the current rotational speed for a period of time in accordance with the stop signal, and then the rotational speed of the drainage pump is adjusted to drop from the current speed to zero, this would cause the water in the outlet section of the drainage pump to flow back rapidly, resulting in noticeable backflow noise.

[0055] Specifically, regarding the step of detecting the first power supply parameter of the drainage pump under the current state in the aforementioned step S110, it further comprises, but is not limited to, the following situation:
First situation: detecting the first power supply parameter of the drainage pump after the drainage pump is controlled to operate under the current state for a third preset duration.

[0056] In an embodiment, the drainage pump starts operating and it is controlled to operate under the current state for a third preset duration, and then the first power supply parameter of the drainage pump under the current state is detected. Therefore, the present embodiment is capable of detecting the first power supply parameter of the drainage pump again after operating for the third preset duration, thereby obtaining a real-time first power supply parameter. In this regard, by comparing the real-time first power supply parameter with the full-load power supply parameter and the no-load power supply parameter, and adjusting the head or the rotational speed of the drainage pump, the operating noise of the drainage pump can be significantly reduced, and user complaints can be minimized.

[0057] It should be noted that by detecting the first power supply parameter of the drainage pump after the drainage pump has operated for the third preset duration, a comparison can be made between the real-time first power supply parameter and the full-load power supply parameter and the no-load power supply parameter. As a result, the real-time drainage state of the drainage pump is obtained, and the head or the rotational speed of the drainage pump is adjusted on the basis of the real-time drainage state. This significantly reduces the operating noise of the drainage pump and minimizes user complaints.

[0058] Based on the control methods for the drainage pump of the various embodiments described above, an overall embodiment of the control method for a drainage pump of the present disclosure is proposed below.

[0059] As shown in FIG. 7, FIG. 7 is an overall flowchart of a control method for a drainage pump according to an embodiment of the present disclosure. The steps are as follows:

1) Setting a head via a wired controller;

2) Operating the drainage pump under the current state;

3) Maintaining operation for the third preset duration;

4) Comparing the first power supply parameter I with the full-load power supply parameter In and the no-load power supply parameter Ino;

4.1) If the first power supply parameter I is equal to the full-load power supply parameter In or the first power supply parameter I is equal to the no-load power supply parameter Ino, maintaining operation in the current state;

4.1.1) Determining whether the reception of the water-full protection signal has lasted for the first preset duration;

4.1.1.1) If the reception of the water-full protection signal has not lasted for the first preset duration, increasing the head;

4.1.1.2) If the reception of the water-full protection signal has lasted for the first preset duration, controlling the drainage pump to stop, and generating the fault prompt message;

4.1.2) Receiving the stop signal, and comparing the first power supply parameter I with the full-load power supply parameter In and the no-load power supply parameter Ino;

4.1.2.1) If the first power supply parameter I is not equal to the full-load power supply parameter In, reducing the rotational speed of the drainage pump by the preset adjustment step until the rotational speed of the drainage pump is reduced to zero within the second preset duration;

4.2) If the first power supply parameter I is greater than the no-load power supply parameter Ino and less than the full-load power supply parameter In, adjusting the current state to the target state, and operating for a fourth preset duration;

4.2.1) Determining whether the parameter variation magnitude is greater than the preset variation magnitude;

4.2.1.1) If the parameter variation magnitude is less than the preset variation magnitude, reducing the head;

4.2.1.2) If the parameter variation magnitude is greater than or equal to the preset variation magnitude, increasing the head.

[0060] In an embodiment, firstly, parameters related to the head of the drainage pump are set via the wired controller. Secondly, the drainage pump operates on the current state. Thirdly, after the accumulated operation duration of the drainage pump reaches the third preset duration, the drainage pump is detected to obtain the first power supply parameter. Next, the first power supply parameter I of the drainage pump is compared with the full-load power supply parameter In and the no-load power supply parameter Ino, where the full-load power supply parameter In and the no-load power supply parameter Ino correspond to the current state of the drainage pump. Finally, when the first power supply parameter I equals the full-load power supply parameter In or the first power supply parameter I equals the no-load power supply parameter, the drainage pump is controlled to maintain operation in the current state; when the first power supply parameter I is greater than the no-load power supply parameter Ino and less than the full-load power supply parameter In, the drainage pump is controlled to adjust from the current state to the target state, and continues to operate for the fourth preset duration. The drainage pump is detected to obtain the second power supply parameter. The second power supply parameter is compared with the first power supply parameter to obtain the parameter variation magnitude. The parameter variation magnitude is compared with the preset variation magnitude to determine whether the parameter variation magnitude is greater than the preset variation magnitude. If the parameter variation magnitude is less than the preset variation magnitude, the head of the drainage pump is reduced. If the parameter variation magnitude is greater than or equal to the preset variation magnitude, the head of the drainage pump is increased, until the first power supply parameter I of the drainage pump equals the full-load power supply parameter In. Additionally, the water-full protection signal of the drainage pump is received, and it is determined whether the water-full protection signal has lasted for the first preset duration. If the water-full protection signal has not lasted for the first preset duration, the head of the drainage pump is increased. If the water-full protection signal has lasted for the first preset duration, the drainage pump is controlled to stop, and the fault prompt message is generated. Furthermore, the stop signal of the drainage pump is received. Upon receiving the stop signal, the first power supply parameter I of the drainage pump is compared with the full-load power supply parameter In and the no-load power supply parameter Ino. If the first power supply parameter I does not equal to the full-load power supply parameter In, the rotational speed of the drainage pump is reduced by the preset adjustment step until the rotational speed of the drainage pump is controlled to decrease to zero within the second preset duration. Therefore, the present embodiment is capable of comparing the real-time first power supply parameter of the drainage pump with the full-load power supply parameter and the no-load power supply parameter. If the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, it can be considered that the drainage pump is currently in a critical water intake state. In this regard, this embodiment may adjust the operating state of the drainage pump to return it to the full-load drainage state. This adjustment significantly reduces the operating noise of the drainage pump and, consequently, minimizes user complaints.

[0061] It should be noted that each state has a corresponding full-load power supply parameter under the full-load condition and a corresponding no-load power supply parameter under the no-load condition. Therefore, the corresponding full-load and no-load power supply parameters can be determined on the basis of the current state.

[0062] It should be noted that the current state mentioned above comprises a current head or a current rotational speed.

[0063] It should be noted that the target state mentioned above comprises a target head or a target rotational speed.

[0064] It is understandable that the full-load power supply parameter and the no-load power supply parameter mentioned above may refer to current, or power, which are not specifically limited in the embodiments.

[0065] It should be noted that regarding the first power supply parameter and the second power supply parameter mentioned above, the first power supply parameter and the second power supply parameter are real-time power supply parameters of the drainage pump during operation. And the first power supply parameter and the second power supply parameter may refer to current, or power, which are not specifically limited in the embodiments.

[0066] It is understandable that the first preset duration, the second preset duration, the third preset duration, the fourth preset duration, the preset variation magnitude, and the preset adjustment step mentioned above may be set according to actual situations and are fixed values, which are not specifically limited in the embodiments.

[0067] Based on the control method for a drainage pump described in the various embodiments above, respective embodiments of a controller, a drainage pump, an air conditioner, and a computer-readable storage medium of the present disclosure are provided below.

[0068] As shown in FIG. 8, FIG. 8 is a schematic structural diagram of a controller, for executing the control method for a drainage pump, according to an embodiment of the present disclosure. A controller 100 implemented in the present disclosure comprises: a processor 110, a memory 120, and a computer program stored in the memory 120 and executable on the processor 110. FIG. 8 illustrates an example with one processor 110 and one memory 120.

[0069] The processor 110 and the memory 120 may be connected via a bus or other means. FIG. 8 illustrates an example of connection via a bus.

[0070] The memory 120 is a non-transitory computer-readable storage medium, which is used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory 120 may comprise a high-speed random-access memory, and may also comprise a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some implementations, the memory 120 optionally comprises memories 120 remotely disposed relative to the processor 110, and these remote memories 120 may be connected to the controller 100 via a network. Examples of the network comprise, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, or combinations thereof.

[0071] A person skilled in the art can understand that the structure of the apparatus shown in FIG. 8 does not constitute a limitation on the controller 100, which may comprise more or fewer components than illustrated, or combine certain components, or have a different arrangement of components.

[0072] In the controller 100 shown in FIG. 8, the processor 110 can be used to invoke the control program stored in the memory 120, thereby implementing the aforementioned control method for a drainage pump. Specifically, the non-transitory software programs and instructions required for implementing the control method for a drainage pump of the above embodiments are stored in the memory 120, and when executed by the processor 110, the control method for a drainage pump of the above embodiments is performed.

[0073] Notably, since the controller 100 of the embodiment of the present disclosure can execute the control method for a drainage pump of any of the above embodiments, the specific implementation and technical effects of the controller 100 of the embodiment of the present disclosure can refer to the specific implementation and technical effects of the control method for a drainage pump of any of the above embodiments.

[0074] In addition, an embodiment of the present disclosure further provides a drainage pump, comprising the controller of the above embodiment.

[0075] Notably, since the drainage pump of the embodiment of the present disclosure comprises the controller of the above embodiment, and the controller of the above embodiment can execute the control method for a drainage pump of any of the above embodiments, the specific implementation and technical effects of the drainage pump of the embodiment of the present disclosure can refer to the specific implementation and technical effects of the control method for a drainage pump of any of the above embodiments.

[0076] In addition, an embodiment of the present disclosure further provides an air conditioner, comprising the drainage pump of the above embodiment.

[0077] Notably, since the air conditioner of the embodiment of the present disclosure comprises the drainage pump of the above embodiment, and the drainage pump of the above embodiment can execute the control method for a drainage pump of any of the above embodiments, the specific implementation and technical effects of the air conditioner of the embodiment of the present disclosure can refer to the specific implementation and technical effects of the control method for a drainage pump of any of the above embodiments.

[0078] Furthermore, an embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium having stored thereon a computer-executable instruction, the computer-executable instruction being configured to, when executed, carry out the above-described method for controlling a drainage pump. By way of example, the method steps described above with reference to FIG. 1 to FIG. 7 are performed.

[0079] Notably, since the computer-readable storage medium of the embodiment of the present disclosure can execute the control method for a drainage pump of any of the above embodiments, the specific implementation and technical effects of the computer-readable storage medium of the embodiment of the present disclosure can refer to the specific implementation and technical effects of the control method for a drainage pump of any of the above embodiments.

[0080] A person skilled in the art will appreciate that all or some of the steps of the methods and systems disclosed herein may be implemented as software, firmware, hardware, or suitable combinations thereof. Some or all of the physical components may be implemented as software executable by a processor, such as a central processing unit, 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 comprise computer storage medium (or non-transitory medium) and communication medium (or transitory medium). As is well known to a person skilled in the art, the term computer storage medium comprises both volatile and non-volatile, removable and non-removable medium implemented in any method or technology for storage of information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage medium comprises, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and is accessible by a computer. Furthermore, it is well known to a person skilled in the art that communication medium typically embodies 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 comprises any information delivery medium.

[0081] The above is a specific description of preferred implementations of the present disclosure, but the present disclosure is not limited to the above implementations. A person skilled in the art can make various equivalent modifications or replacements without departing from the scope of the present disclosure, and all such equivalent modifications or replacements are comprised within the scope defined by the claims of the present disclosure.

Claims

1. A control method for a drainage pump, comprising:

detecting a first power supply parameter of the drainage pump under a current state;

determining a full-load power supply parameter and a no-load power supply parameter corresponding to the current state; and

when the first power supply parameter is less than the full-load power supply parameter and greater than the no-load power supply parameter, adjusting the current state until the first power supply parameter is equal to the full-load power supply parameter.

2. The control method of claim 1, wherein after the determining the full-load power supply parameter and the no-load power supply parameter corresponding to the current state, the control method further comprises:
when the first power supply parameter equals the no-load power supply parameter or the full-load power supply parameter, maintaining operation of the drainage pump in the current state.

3. The control method of claim 1 or 2, wherein the adjusting the current state comprises:

adjusting the current state to a target state, and obtaining a second power supply parameter of the drainage pump under the target state;

determining a parameter variation magnitude of the second power supply parameter relative to the first power supply parameter; and

adjusting the current state on the basis of the parameter variation magnitude.

4. The control method of claim 3, wherein the adjusting the current state on the basis of the parameter variation magnitude comprises:

determining a comparison result between the parameter variation magnitude and a preset variation magnitude; and

adjusting the current state on the basis of the comparison result.

5. The control method of claim 4, wherein the adjusting the current state on the basis of the comparison result comprises one of:

when the comparison result indicates that the parameter variation magnitude is less than the preset variation magnitude, reducing a head or a rotational speed of the drainage pump; or

when the comparison result indicates that the parameter variation magnitude is greater than or equal to the preset variation magnitude, increasing the head or the rotational speed of the drainage pump.

6. The control method of any one of claims 1 to 5, further comprising:

receiving a water-full protection signal; and

increasing a head or a rotational speed of the drainage pump in accordance with the water-full protection signal.

7. The control method of claim 6, wherein following the increasing the head or the rotational speed of the drainage pump in accordance with the water-full protection signal, the control method comprises:

acquiring a duration of the water-full protection signal; and

when the duration reaches a first preset duration, controlling the drainage pump to stop and generating a fault prompt message.

8. The control method of any one of claims 1 to 7, further comprising:

receiving a stop signal, and controlling the drainage pump to maintain operation in accordance with the stop signal; and

once the first power supply parameter is no longer equal to the full-load power supply parameter, reducing the rotational speed of the drainage pump by a preset adjustment step until the rotational speed of the drainage pump is reduced to zero within a second preset duration.

9. The control method of any one of claims 1 to 8, wherein the detecting the first power supply parameter of the drainage pump under the current state comprises:
detecting the first power supply parameter of the drainage pump after the drainage pump is controlled to operate under the current state for a third preset duration.

10. The control method of any one of claims 1 to 9, wherein the current state comprises a current head or a current rotational speed.

11. A controller, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, carries out a control method for a drainage pump of any one of claims 1 to 10.

12. A drainage pump, comprising a controller of claim 11.

13. An air conditioner, comprising a drainage pump of claim 12.

14. A computer-readable storage medium, having a computer-executable instruction stored thereon, wherein the computer-executable instruction is configured to carry out a control method for a drainage pump of any one of claims 1 to 10.

Drawing