Pump body detection method, system, device, storage medium and air conditioner

Abstract

Embodiments of the present application disclose a pump body detection method, system, device, storage medium and air conditioner, wherein the pump body detection method comprises: acquiring phase voltage and / or phase current of a motor of the pump body; and determining a working state of the pump body based on the phase voltage and / or the phase current. The pump body detection method provided by the embodiments of the present application determines the working state of the pump body based on the phase voltage and / or the phase current, the phase voltage and the phase current have small fluctuation, the phase voltage and / or the phase current can represent the working state of the pump body, the working state of the pump body can be determined more accurately, and the user experience can be improved; the phase voltage and / or the phase current of the motor of the pump body can be collected through a circuit connection mode, the phase voltage and / or the phase current are more directly acquired, compared with a method for determining the working state of the pump body based on flow in the prior art, the phase voltage and / or the phase current are used as the determination basis, the accuracy is higher, and the signal acquisition is more convenient.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of air conditioners, and in particular to a pump body detection method, a computer readable storage medium, a pump body detection system, a pump body detection device, and an air conditioner. BACKGROUND

[0002] When the air conditioner indoor unit cools, water vapor in the air will become condensed water and flow into the air conditioner water pan when it encounters a low-temperature evaporator. Generally, the condensed water is discharged to the outside through a pump body. However, in the actual use of the air conditioner, the actual water level in the water pan is often lower than the required water level, and there is air in the pump cavity. The gas and the liquid disturb each other to produce gas-liquid mixed noise. In the current technology, the working state of the pump body is often detected by detecting the flow of the pump body. However, the flow of the pump body is highly volatile, which makes it difficult to accurately determine the working state of the pump body, and thus the noise of the pump body cannot be well suppressed, affecting the user experience. SUMMARY

[0003] The present application aims to at least solve one of the problems in the prior art or related art.

[0004] To this end, a first aspect of the present application provides a pump body detection method.

[0005] A second aspect of the present application provides a computer readable storage medium.

[0006] A third aspect of the present application provides a pump body detection system.

[0007] A fourth aspect of the present application provides a pump body detection device.

[0008] A fifth aspect of the present application provides an air conditioner.

[0009] Therefore, according to a first aspect of the embodiments of the present application, a pump body detection method is provided, comprising:

[0010] Obtaining the phase voltage and / or the phase current of the motor of the pump body;

[0011] Determining the working state of the pump body based on the phase voltage and / or the phase current.

[0012] In a feasible implementation, the step of determining the working state of the pump body based on the phase voltage and / or the phase current comprises:

[0013] In the case where the phase voltage is greater than a first threshold value and / or the phase current is greater than a fourth threshold value, it is determined that the working state of the pump body is a normal working state;

[0014] determining that the working state of the pump body is an abnormal state in a case where the phase voltage is less than or equal to the first threshold value and / or the phase current is less than or equal to the fourth threshold value.

[0015] In an embodiment, the step of determining that the working state of the pump body is an abnormal state in a case where the phase voltage is less than or equal to the first threshold value and / or the phase current is less than or equal to the fourth threshold value comprises:

[0016] determining that the working state of the pump body is a low water level state in a case where the phase voltage is less than or equal to the first threshold value and greater than a second threshold value;

[0017] determining that the working state of the pump body is an idle state in a case where the phase voltage is less than or equal to the second threshold value and greater than a third threshold value and / or the phase current is less than or equal to a fifth threshold value and greater than a sixth threshold value;

[0018] determining that the working state of the pump body is a fault state in a case where the phase voltage is less than or equal to the third threshold value and / or the phase current is less than or equal to the sixth threshold value;

[0019] determining that the working state of the pump body is a dirty block state in a case where the phase current is less than or equal to the fourth threshold value and greater than a fifth threshold value;

[0020] wherein the second threshold value is less than the first threshold value, and the third threshold value is less than the second threshold value;

[0021] wherein the fifth threshold value is less than the fourth threshold value, and the sixth threshold value is less than the fifth threshold value.

[0022] In an embodiment, the detection method further comprises monitoring an opening duration of the pump body.

[0023] The step of determining that the working state of the pump body is an abnormal state in a case where the phase current is less than or equal to the fourth threshold value comprises:

[0024] determining that the working state of the pump body is a dirty block state in a case where the phase current is less than or equal to the fourth threshold value, greater than a fifth threshold value, and the opening duration of the pump body is greater than a first duration;

[0025] determining that the working state of the pump body is an idle state in a case where the phase current is less than or equal to the fifth threshold value, greater than a sixth threshold value, and the opening duration of the pump body is greater than a first duration;

[0026] In a case where the phase current is less than or equal to the sixth threshold value and the opening duration of the pump body is greater than a first duration, it is determined that the working state of the pump body is a fault state.

[0027] In an implementable embodiment, in a case where the working state of the pump body is a low water level state, the detection method further comprises:

[0028] Increasing the rotating speed of the pump body, and controlling the pump body to operate at a first rotating speed for a first duration;

[0029] Again acquiring the phase voltage of the motor of the pump body;

[0030] In a case where the number of times of increasing the rotating speed of the pump body exceeds a seventh threshold value and the phase voltage is less than or equal to the first threshold value, it is determined that the working state of the pump body is an abnormal exhaust working state.

[0031] In an implementable embodiment, the detection method further comprises:

[0032] In a case where the working state of the pump body is a normal working state, generating pump body normal working information;

[0033] In a case where the working state of the pump body is a low water level state, generating low water level state prompt information;

[0034] In a case where the working state of the pump body is an idling state, generating idling prompt information;

[0035] In a case where the working state of the pump body is a fault state, generating fault prompt information;

[0036] In a case where the working state of the pump body is a dirty and blocked state, generating dirty and blocked prompt information;

[0037] In a case where the working state of the pump body is an abnormal exhaust working state, generating abnormal exhaust prompt information.

[0038] In an implementable embodiment, in a case where the working state of the pump body is an idling state, the detection method further comprises:

[0039] Controlling the pump body to stop.

[0040] According to a second aspect of an embodiment of the present application, a computer readable storage medium is provided, the computer readable storage medium storing a computer program, and implementing the detection method according to any of the above technical solutions.

[0041] According to a third aspect of an embodiment of the present application, a pump body detection system is provided, comprising:

[0042] a detection unit configured to acquire a phase voltage and / or a phase current of a motor of the pump body;

[0043] a determination unit configured to determine an operating state of the pump body based on the phase voltage and / or the phase current.

[0044] According to a fourth aspect of the embodiments of the present application, a detection device of a pump body is provided, comprising:

[0045] a memory storing a computer program;

[0046] a processor executing the computer program;

[0047] In the execution of the computer program, the processor implements the detection method according to any of the above technical solutions.

[0048] According to a fifth aspect of the embodiments of the present application, an air conditioner is provided, comprising:

[0049] a water pan;

[0050] a pump body arranged in the water pan;

[0051] a detection device as described in the above technical solutions, configured to determine an operating state of the pump body.

[0052] In a feasible implementation, the air conditioner further comprises:

[0053] a voltage detection module connected to the pump body, and the detection device acquires the phase voltage of the pump body through the voltage detection module;

[0054] a filter arranged at a water inlet of the pump body;

[0055] a current detection module connected to the pump body, and the detection device acquires the phase current of the pump body through the current detection module.

[0056] Compared with the prior art, the pump body detection method provided by the embodiment of the application has at least the following beneficial effects: the phase voltage and / or phase current of the pump body motor are acquired, the working state of the pump body can be determined based on the phase voltage, on the one hand, the phase voltage of the pump body motor has small fluctuation, and the phase voltage can represent the working state of the pump body, which can make the determination of the working state of the pump body more accurate, reduce the probability of false positives and false negatives of the working state of the pump body, and improve user experience; on the other hand, the phase voltage of the pump body motor can be collected through circuit connection, the acquisition of the phase voltage is more direct and fast, the accuracy of the phase voltage measurement is high, compared with the prior art in which the working state of the pump body is determined based on flow, the accuracy is higher when the phase voltage is used as the determination basis, and the signal acquisition is more convenient. The working state of the pump body can also be determined based on the phase current, on the one hand, the phase current of the pump body has small fluctuation, and the phase current can represent the working state of the pump body, which can make the determination of the working state of the pump body more accurate, reduce the probability of false positives and false negatives of the working state of the pump body, and improve user experience; on the other hand, the phase current of the pump body can be collected through circuit connection, the acquisition of the phase current is more direct and fast, the accuracy of the phase current measurement is high, compared with the prior art in which the working state of the pump body is determined based on flow, the accuracy is higher when the phase current is used as the determination basis, and the signal acquisition is more convenient. The working state of the pump body can also be determined based on the phase current and the phase voltage, the determination of the working state of the pump body based on the phase current and the phase voltage can make the determination of the working state of the pump body more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0057] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in any respect. Moreover, the use of the same reference symbols in different drawings indicates similar or identical components.

[0058] Figure 1 A schematic step flow chart of the pump body detection method provided by an embodiment of the application;

[0059] Figure 2 A corresponding relationship diagram between the water level height and the phase voltage of the pump body detection method provided by an embodiment of the application;

[0060] Figure 3 A schematic step flow chart of the pump body detection method provided by another embodiment of the application;

[0061] Figure 4 A schematic step flow chart of the pump body detection method provided by another embodiment of the application;

[0062] Figure 5A schematic step flow chart of a detection method of a pump body according to another embodiment of the present application is provided;

[0063] Figure 6 A structural block diagram of a computer readable storage medium according to an embodiment of the present application is provided;

[0064] Figure 7 A structural block diagram of a detection system of a pump body according to an embodiment of the present application is provided;

[0065] Figure 8 A structural block diagram of a detection device of a pump body according to an embodiment of the present application is provided;

[0066] Figure 9 A schematic structural diagram of a pump body according to an embodiment of the present application is provided;

[0067] Figure 10 A schematic structural diagram of an air conditioner according to an embodiment of the present application is provided;

[0068] Figure 11 A schematic structural diagram of an air conditioner according to another embodiment of the present application is provided.

[0069] Wherein, Figure 9 And Figure 11 The correspondence between the reference signs and the component names in the above embodiments is as follows:

[0070] 800 water pan, 900 pump body, 1000 filter element;

[0071] 901 housing, 902 rotating shaft, 903 liquid discharge pawl, 904 air discharge pawl, 905 pump cavity, 906 liquid suction end, 907 air discharge hole, 908 air discharge channel. DETAILED DESCRIPTION

[0072] In order to better understand the above technical solutions, the technical solutions of the embodiments of the present application will be described in detail below through the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0073] As Figure 1 shown, according to the first aspect of the embodiments of the present application, a detection method of a pump body is provided, comprising:

[0074] Step 101: Obtain the phase voltage and / or phase current of the motor of the pump body. It can be understood that the pump body includes a motor, a rotating shaft and a vane wheel, the rotating shaft is connected to the output end of the motor, and the vane wheel is arranged on the rotating shaft. The vane wheel is driven to rotate by the motor to drive the rotating shaft to rotate, so that the pump body can extract liquid medium. The phase voltage is the voltage in the three-phase circuit of the motor. It can be understood that the motor includes three phases, and the voltages of each phase are the same. In actual use, the voltage of any one of the three-phase voltage of the motor can be measured as the phase voltage. In actual execution, the voltage detection module can be directly connected to the motor of the pump body to collect the phase voltage, so that the phase voltage can be accurately and conveniently obtained. For example, the amplitude calculation module can be connected to the motor to collect the phase voltage. The phase current is the current flowing through the three-phase motor. It can be understood that the motor includes three-phase current, and the currents of each phase are the same. In actual use, the phase current of any one of the three-phase current of the motor can be measured as the phase current. In actual execution, the current detection module can be directly connected to the motor of the pump body to collect the phase current, so that the phase current can be accurately and conveniently obtained. For example, the amplitude calculation module can be connected to the motor to collect the phase current.

[0075] Step 102: Determine the working state of the pump body based on the phase voltage and / or phase current. Considering that the working principle of the pump body is that the magnetic field B generated by the rotor permanent magnet of the motor of the pump body interacts with the stator winding current I to generate electromagnetic force F, so that the vane wheel of the pump body rotates, and the formula is F=BIL, B is the magnetic field generated by the rotor permanent magnet, L is the effective enameled wire length, that is, the iron core stacking thickness, and I is the phase current. In the case of B and L, the larger the phase current I is, the larger F is, and the larger the torque T is. According to the formula P=TΩ, the larger the torque is, the larger the motor output power of the pump body is; the pump body adopts a speed closed-loop control scheme, that is, Ω is constant. When the pump cavity has more water, it means that the pump blade load is larger, T is larger, F is larger, and therefore the phase current I is larger. The phase voltage U=Ea+IR, wherein Ea is the back electromotive force, and R is the resistance. The back electromotive force and the resistance are constant. Therefore, the larger the phase current I is, the larger the phase voltage U is. Based on this, the phase current I and / or the phase voltage U can be used to determine whether the pump body is in a normal working state. It can be understood that the larger the value of the phase voltage U is, the larger the motor output power of the pump body is. In this case, it can be indicated that the working state of the pump body is better. On the contrary, the smaller the value of the phase voltage U of the pump body is, the smaller the motor output power of the pump body is. In this case, it can be indicated that the working state of the pump body is worse. It can be understood that the larger the value of the phase current I is, the larger the motor output power of the pump body is. In this case, it can be indicated that the working state of the pump body is better. On the contrary, the smaller the value of the phase current I of the pump body is, the smaller the motor output power of the pump body is. In this case, it can be indicated that the working state of the pump body is worse.

[0076] The detection method of the pump body provided in the embodiments of the present application obtains the phase voltage and / or phase current of the pump motor, and can determine the working state of the pump body based on the phase voltage. On the one hand, the phase voltage of the pump motor has small fluctuation, and can represent the working state of the pump body, so that the determination of the working state of the pump body is more accurate, the probability of false positives and false negatives of the working state of the pump body is reduced, and the user experience is improved. On the other hand, the phase voltage of the pump body can be collected through circuit connection, the phase voltage is more directly and quickly obtained, the accuracy of the phase voltage measurement is high, compared with the current technology of determining the working state of the pump body based on the flow, the accuracy is higher when the phase voltage is used as the determination basis, and the signal collection is more convenient. The working state of the pump body can also be determined based on the phase current. On the one hand, the phase current of the pump body has small fluctuation, and can represent the working state of the pump body, so that the determination of the working state of the pump body is more accurate, the probability of false positives and false negatives of the working state of the pump body is reduced, and the user experience is improved. On the other hand, the phase current of the pump body can be collected through circuit connection, the phase current is more directly and quickly obtained, the accuracy of the phase current measurement is high, compared with the current technology of determining the working state of the pump body based on the flow, the accuracy is higher when the phase current is used as the determination basis, and the signal collection is more convenient. The working state of the pump body can also be determined based on the phase current and the phase voltage. The working state of the pump body can be determined based on the phase current and the phase voltage, so that the determination of the working state of the pump body is more accurate.

[0077] As shown in Figure 2 , the phase voltage and the water level height are positively correlated, and the higher the phase voltage value is, the higher the corresponding water level height is. It can be understood that when the phase voltage of the pump body is low, the output power of the pump body is low, and there is little water in the pump cavity. In this case, the pump body may produce noise. By collecting the phase voltage of the pump body, the working state of the pump body can be accurately determined, and in particular, the low water level working state of the pump body can be identified, which is beneficial to discovering the low water level working state of the pump body as soon as possible.

[0078] It can be understood that when the pump body is applied to an air conditioner, there are many factors causing noise of the air conditioner. By using the detection method of the pump body provided in the embodiments of the present application, the abnormal working state of the pump body can be discovered in time, which is beneficial to quickly identifying the cause of the noise of the air conditioner, and the pump cavity of the pump body can be timely vented to suppress the noise of the air conditioner, thereby improving the user experience.

[0079] It can be understood that by using the detection method of the pump body provided in the embodiments of the present application, the phase voltage and the phase current of the pump motor can be directly obtained through the motor connection pressure measuring circuit, so that other sensors are not needed when determining the working state of the pump body, and the cost of pump detection can be reduced.

[0080] In some examples, the step of determining the working state of the pump body based on the phase voltage and / or the phase current comprises: determining that the working state of the pump body is a normal working state when the phase voltage is greater than a first threshold value and / or the phase current is greater than a fourth threshold value; determining that the working state of the pump body is an abnormal state when the phase voltage is less than or equal to the first threshold value and / or the phase current is less than or equal to the fourth threshold value.

[0081] The detection method provided by the embodiments of the present application sets the first threshold value. When the phase voltage of the pump body is greater than the first threshold value, it indicates that the pump body has a relatively high output power. In this case, the pump body is determined to be in a normal working state, and the water quantity in the pump cavity of the pump body is relatively sufficient. In this case, the noise of the pump body in operation is relatively small. When the phase voltage of the pump body is less than or equal to the first threshold value, it indicates that the output power of the pump body is lower than the expected output power. In this case, the pump body can be determined to be in an abnormal state, and the pump body can have a low water level, idle running or a failure to use. In this case, the pump body in operation can have noise, which further affects the experience of the user.

[0082] It can be understood that the value of the first threshold value is related to the rated power of the pump body. The greater the rated power of the pump body, the higher the value of the first threshold value. The lower the rated power of the pump body, the lower the value of the first threshold value.

[0083] In some examples, the value of the first threshold value can be 5V to 7V.

[0084] The detection method provided by the embodiments of the present application sets the fourth threshold value. When the phase current of the pump body is greater than the first threshold value, it indicates that the pump body has a relatively high output power. In this case, the pump body is determined to be in a normal working state. When the phase current of the pump body is less than or equal to the fourth threshold value, it indicates that the output power of the pump body is lower than the expected output power. In this case, the pump body can be determined to be in an abnormal state, and the pump body can have a dirty blockage, idle running or a failure to use.

[0085] It can be understood that the value of the fourth threshold value is related to the rated power of the pump body. The greater the rated power of the pump body, the higher the value of the first threshold value. The lower the rated power of the pump body, the lower the value of the fourth threshold value.

[0086] In some examples, the value of the first threshold value can be 7.5mA to 9mA.

[0087] It can be understood that the working state of the pump body can be determined to be a normal working state when the phase voltage is greater than the first threshold value or the phase current is greater than the fourth threshold value, which can reduce the frequency of pump body error reporting. The working state of the pump body can also be determined to be a normal working state when the phase voltage is greater than the first threshold value and the phase current is greater than the fourth threshold value, which makes the determination of the normal working state of the pump body more accurate.

[0088] In the case that the phase voltage is less than or equal to the first threshold value or the phase current is less than or equal to the fourth threshold value, it is determined that the working state of the pump body is an abnormal state, that is, one of the phase voltage and the phase current meets the abnormal state, so that the detection of the abnormal state of the pump body is more sensitive; or in the case that the phase voltage is less than or equal to the first threshold value and the phase current is less than or equal to the fourth threshold value, it is determined that the working state of the pump body is an abnormal state, that is, both the phase current and the phase voltage indicate that the working state of the pump body is abnormal.

[0089] In some examples, in the case that the phase voltage is less than or equal to the first threshold value and / or the phase current is less than or equal to the fourth threshold value, the step of determining that the working state of the pump body is an abnormal state comprises:

[0090] In the case that the phase voltage is less than or equal to the first threshold value and greater than the second threshold value, it is determined that the working state of the pump body is a low water level state;

[0091] In the case that the phase voltage is less than or equal to the second threshold value and greater than the third threshold value and / or the phase current is less than or equal to the fifth threshold value and greater than the sixth threshold value, it is determined that the working state of the pump body is an idle state;

[0092] In the case that the phase voltage is less than or equal to the third threshold value and / or the phase current is less than or equal to the sixth threshold value, it is determined that the working state of the pump body is a fault state;

[0093] In the case that the phase current is less than or equal to the fourth threshold value and greater than the fifth threshold value, it is determined that the working state of the pump body is a dirty block state;

[0094] The second threshold value is less than the first threshold value, and the third threshold value is less than the second threshold value.

[0095] The fifth threshold value is less than the fourth threshold value, and the sixth threshold value is less than the fifth threshold value.

[0096] The detection method of the pump body provided by the embodiment of the application sets the second threshold value and the third threshold value.

[0097] In the case that the phase voltage of the pump body is less than or equal to the first threshold value and greater than the second threshold value, it indicates that the output power of the pump body is low, but still has a certain output power, which indicates that the actual water level of the pump body is low, and there is gas and water in the pump cavity, so that the amount of water entering the pump body is reduced, and the output power of the pump is reduced. Therefore, in this case, it can be determined that the working state of the pump body is a low water level state, and the operation of the pump body can be stopped to reduce noise. When the water level is increased and more water is filled in the pump cavity, the pump body can be started again to reduce noise. Similarly, the speed of the pump body can be increased to quickly remove the gas in the pump cavity to reduce the noise of the pump body.

[0098] When the phase voltage of the pump body is less than or equal to the second threshold value and greater than the third threshold value, it is considered that the output power of the pump body is lower than the output power in the low water level state, and it is considered that basically no water enters the pump body in this case, and the pump body is in an idling state. Continuous operation of the pump body in the idling state can cause the motor temperature to rise, and long-time operation can cause the pump body to be damaged, so the user or the maintenance personnel should be reminded to clean the fault in time.

[0099] It can be understood that when the pump body is completely blocked by the sundries or the filter screen of the pump body is completely blocked by the sundries, water cannot enter the pump body, which can cause the pump body to idle. In addition, when the pump body is used to discharge the condensed water generated by the evaporator of the air conditioner, the pump body is usually arranged in a water pan for receiving the condensed water generated by the evaporator, and a liquid level sensor is usually arranged in the water pan to detect the water level. Only when the water level exceeds the threshold value, the pump body is controlled to be started. If the pump body idles, it is also possible that the liquid level sensor fails, causing the pump body to start in the case that there is no water or the water level is low in the water pan. Therefore, when the working state of the pump body is idling, the user or the maintenance personnel should detect the dirty blockage and the water level sensor.

[0100] When the phase voltage of the pump body is less than or equal to the third threshold value, it is considered that the output power of the pump body is extremely low. In this case, it is considered that the motor of the pump body has failed, such as the motor being unable to rotate, the rotating shaft or the impeller being stuck, and the like. In this case, maintenance should be performed in time.

[0101] In some examples, the values of the second threshold value and the third threshold value are related to the rated power of the pump body. The greater the rated power of the pump body, the greater the values of the second threshold value and the third threshold value. The smaller the rated power of the pump body, the smaller the values of the second threshold value and the third threshold value. The value of the second threshold value can be 2V to 3V, and the value of the third threshold value can be 0.5V to 1V.

[0102] The detection method of the pump body provided by the embodiments of the present application sets the fifth threshold value and the sixth threshold value.

[0103] When the phase current of the pump body is less than or equal to the fourth threshold value and greater than the fifth threshold value, it is considered that the output power of the pump body is low, but still has a certain output power. In this case, it is considered that the pump body is blocked by sundries or the filter screen of the pump body is blocked by sundries, which reduces the amount of water entering the pump body and further reduces the output power of the pump. Therefore, in this case, it can be determined that the pump body is in a dirty blockage state, and the user or the maintenance personnel can be reminded to clean the pump body.

[0104] When the phase current of the pump body is less than or equal to the fifth threshold value and greater than the sixth threshold value, it is considered that the output power of the pump body is lower than that in the dirty block state of the water pump, and it is considered that basically no water enters the pump body in this case, and the pump body is in an idling state. Continuous operation of the pump body in the idling state can cause the temperature of the motor to rise, and long-time operation can cause damage to the pump body, so the user or the maintenance personnel should be reminded to clean the fault in time.

[0105] It can be understood that when the pump body is completely blocked by sundries or the filter screen of the pump body is completely blocked by sundries, water cannot enter the pump body, which can cause the pump body to idle. In addition, when the pump body is used to discharge the condensed water generated by the evaporator of the air conditioner, the pump body is usually arranged in a water pan for receiving the condensed water generated by the evaporator, and a liquid level sensor is usually arranged in the water pan to detect the water level. Only when the water level exceeds the threshold value, the pump body is controlled to be started. If the pump body idles, it is also possible that the liquid level sensor fails, causing the pump body to start in the case that there is no water or the water level is low in the water pan. Therefore, when the working state of the pump body is idling, the user or the maintenance personnel should detect the dirty block state and the water level sensor.

[0106] When the phase current of the pump body is less than or equal to the sixth threshold value, it is considered that the output power of the pump body is extremely low. In this case, the motor of the pump body may fail, such as the motor being unable to rotate, the shaft or impeller being stuck, etc. In this case, maintenance should be performed in time.

[0107] In some examples, the fifth threshold value and the sixth threshold value are related to the rated power of the pump body. The greater the rated power of the pump body, the greater the values of the fifth threshold value and the sixth threshold value. The smaller the rated power of the pump body, the smaller the values of the fifth threshold value and the sixth threshold value. The value of the fifth threshold value can be 5.5 mA to 7 mA, and the value of the sixth threshold value can be 1.5 mA to 2.5 mA.

[0108] In some examples, the detection method further includes monitoring the starting duration of the pump body.

[0109] When the phase current is less than or equal to the fourth threshold value, the step of determining that the working state of the pump body is the abnormal state includes:

[0110] When the phase current is less than or equal to the fourth threshold value, greater than the fifth threshold value, and the starting duration of the pump body is greater than the first duration, it is determined that the working state of the pump body is the dirty block state.

[0111] When the phase current is less than or equal to the fifth threshold value, greater than the sixth threshold value, and the starting duration of the pump body is greater than the first duration, it is determined that the working state of the pump body is the idling state.

[0112] In a case that the phase current is less than or equal to the sixth threshold value and the opening duration of the pump body is greater than the first duration, it is determined that the working state of the pump body is a fault state.

[0113] The opening duration of the pump body is detected, and the opening duration of the pump body is greater than the first duration. In this case, it can be considered that the working state of the pump body is in a steady state. Only in the case that the opening duration of the pump body is greater than the first duration, the specific working state of the abnormal working state of the pump body is determined. The detection result of the working state of the pump body can be avoided to be affected by the fluctuation of the phase current in the initial stage of the opening of the pump body. The accuracy of the detection of the working state of the pump body can be further improved, and the probability of false positives or false negatives can be further reduced.

[0114] When the phase current of the pump body is less than or equal to the fourth threshold value and greater than the fifth threshold value, and the opening duration of the pump body is greater than the first duration, it is indicated that the output power of the pump body is low in the case that the pump works stably, but still has a certain output power. In this case, it is indicated that the pump body or the filter screen of the pump body is blocked by sundries, which reduces the amount of water entering the pump body and further reduces the output power of the pump. Therefore, in this case, it can be determined that the pump body is in a dirty and blocked state, and the user or the maintenance personnel can be reminded to clean the pump body.

[0115] When the phase current of the pump body is less than or equal to the fifth threshold value and greater than the sixth threshold value, and the opening duration of the pump body is greater than the first duration, it is indicated that the output power of the pump body is lower than the output power of the water pump in the case that the pump works stably. In this case, it is considered that basically no water enters the pump body, and the pump body is in an idling state. The pump body continuously operates in the idling state, which can cause the temperature of the motor to rise. Long-time operation can cause damage to the pump body. The user or the maintenance personnel should be reminded to clean the fault in time.

[0116] It can be understood that when the sundries completely block the pump body or the sundries completely block the filter screen of the pump body, water cannot enter the pump body. This case can cause the pump body to idle. In addition, when the pump body is used to discharge the condensate water generated by the evaporator of the air conditioner, the pump body is usually arranged in a water pan. The water pan is used to collect the condensate water generated by the evaporator. A liquid level sensor is usually arranged in the water pan to detect the water level. Only when the water level exceeds a threshold value, the pump body is controlled to be opened. If the pump body idles, it is also possible that the water level sensor fails, causing the pump body to be opened in the case that there is no water or the water level is low in the water pan. Therefore, when the working state of the pump body is idling, the user or the maintenance personnel should detect the dirty and blocked state and the water level sensor.

[0117] When the phase current of the pump body is less than or equal to the sixth threshold value, and the opening duration of the pump body is greater than the first duration, it is indicated that the output power of the pump body is extremely low in the case that the pump body is stably working. In this case, the motor of the pump body may be malfunctioning, such as the motor being unable to rotate, the rotating shaft or impeller being stuck, and the like. In this case, the pump body should be promptly repaired.

[0118] In some examples, the first duration can be 3 to 5 seconds.

[0119] In some examples, the values of the fifth threshold value and the sixth threshold value are related to the rated power of the pump body. The greater the rated power of the pump body, the greater the values of the fifth threshold value and the sixth threshold value. The smaller the rated power of the pump body, the smaller the values of the fifth threshold value and the sixth threshold value. The value of the fifth threshold value can be 5.5 to 7 mA, and the value of the sixth threshold value can be 1.5 to 2.5 mA.

[0120] In some examples, in the case that the working state of the pump body is the low water level state, the detection method further comprises: increasing the rotating speed of the pump body, controlling the pump body to operate at the first rotating speed for the first duration; again acquiring the phase voltage of the motor of the pump body; in the case that the number of times of increasing the rotating speed of the pump body exceeds the seventh threshold value, and the phase voltage of the pump body is less than or equal to the first threshold value, determining that the working state of the pump body is the abnormal exhaust working state.

[0121] When it is learned that the working state of the pump body is the low water level state, the rotating speed of the pump body can be controlled to increase. After the rotating speed of the pump body rises to the first rotating speed, the pump body is continuously operated for the first duration. In this case, the output power of the pump body can be increased to quickly exhaust the gas in the pump cavity. It can be understood that, after the pump body rises to the first rotating speed, the operating speed of the pump body is relatively fast. In this case, noise may also be generated. Therefore, after the pump body operates at the first rotating speed for the first duration, the rotating speed of the pump body can be controlled to decrease to the normal rotating speed. At this time, the gas in the pump cavity of the pump body has been exhausted, and the noise generated by the operation of the pump body can be reduced.

[0122] After the pump body operates at the first rotating speed for the first duration, the phase voltage of the motor of the pump body is again acquired. The working state of the pump body can be determined again. If the phase voltage is greater than the first threshold value, it can be considered that the pump body is in the normal water level working state.

[0123] If the number of times of increasing the rotating speed of the pump body exceeds the seventh threshold value, and the phase voltage is still less than the first threshold value, it is indicated that the exhaust of the pump body at the increased rotating speed is ineffective, and the gas in the pump cavity is not effectively exhausted. In this case, it can be considered that the pump body is in the abnormal exhaust working state, and the pump body should be promptly repaired.

[0124] If the number of times of increasing the rotating speed of the pump body exceeds the seventh threshold value, and the phase voltage is still less than the first threshold value, it is indicated that the exhaust of the pump body at the increased rotating speed is ineffective, and the gas in the pump cavity is not effectively exhausted. In this case, it can be considered that the pump body is in the abnormal exhaust working state, and the pump body should be promptly repaired. Figure 9As shown in the figure, wherein the circle in the figure represents gas, and the horizontal line in the pump cavity 905 represents liquid. In some examples, the pump body can include: a shell 901, a motor, a rotating shaft 902, a liquid discharge page wheel 903 and an exhaust page wheel 904. The motor and the rotating shaft 902 are arranged in the shell 901. The motor is connected to the rotating shaft 902 for driving the rotating shaft 902 to rotate. One end of the shell 901 is a liquid suction end 906. The side of the shell 901 close to the liquid suction end 906 forms a pump cavity 905. The liquid discharge page wheel 903 and the exhaust page wheel 904 are both connected to the rotating shaft 902 and arranged in the pump cavity 905. The exhaust page wheel 904 is arranged on the side of the pump cavity 905 away from the liquid suction end 906. An exhaust hole 907 can be formed on the shell 901. The exhaust hole 907 is communicated with the pump cavity 905 through an exhaust passage 908. When the rotating speed of the rotating shaft 902 is increased, the rotating speed of the exhaust page wheel 904 is also increased, so that the gas accumulated at the top of the pump cavity 905 can be discharged to the outside of the pump body through the exhaust passage 908, so that the water filling amount in the pump cavity 905 is higher, and the noise of the pump body during operation is reduced. It can be understood that when the working state of the pump body is the abnormal exhaust working state, it is possible that the exhaust page wheel 904 of the pump body is damaged, or it is possible that the exhaust hole 907 of the pump body is blocked. Therefore, when it is detected that the pump body is in the abnormal exhaust working state, the maintenance personnel can check the exhaust page wheel 904 and the exhaust hole 907 based on the detection result as soon as possible, which is helpful to quickly eliminate the fault of the pump body.

[0125] In some examples, the value of the seventh threshold is obtained based on the detection result of the phase voltage. The lower the detection result of the phase voltage, the more gas in the pump cavity, and the higher the value of the seventh threshold. The higher the detection result of the phase voltage, the less gas in the pump body, and the lower the value of the seventh threshold. The value of the fourth threshold can be 2 to 5 times. The value of the first rotating speed is determined based on the normal operating speed of the pump body. The normal operating speed of the pump body is positively correlated with the value of the first rotating speed. The value of the first rotating speed can be 3000 rpm to 5000 rpm. The rotating speed of the pump body in the normal working state can be 2000 rpm.

[0126] In some examples, the detection method further comprises: generating pump normal operation information when the working state of the pump body is the normal operation state; generating low water level state prompt information when the working state of the pump body is the low water level state; generating idling prompt information when the working state of the pump body is the idling state; generating fault prompt information when the working state of the pump body is the fault state; generating dirty blockage prompt information when the working state of the pump body is the dirty blockage state; and generating abnormal exhaust prompt information when the working state of the pump body is the abnormal exhaust working state.

[0127] When the pump body is in a normal working state, normal working information of the pump body can be generated, the controller of the air conditioner or the pump body can acquire the normal working information of the pump body, and the normal working information of the pump body is displayed through the display unit, so that the user can know the working state of the pump body.

[0128] When the pump body is in a low water level state, low water level state prompt information can be generated, the controller of the air conditioner or the pump body can acquire the low water level state prompt information, and the low water level state prompt information is displayed through the display unit, so that the user can quickly perform the exhaust treatment for the pump body, thereby reducing the noise of the pump body and the air conditioner equipped with the pump body.

[0129] When the pump body is in an idling state, idling prompt information can be generated, the controller of the air conditioner or the pump body can acquire the idling prompt information, and the idling prompt information is displayed through the display unit, so that the user can quickly remove the idling state of the pump body, thereby improving the service life of the pump body.

[0130] When the pump body is in a fault state, fault prompt information can be generated, the controller of the air conditioner or the pump body can acquire the fault prompt information, and the fault prompt information is displayed through the display unit, so that the user can quickly repair the fault of the pump body.

[0131] When the pump body is in a dirty and blocked state, dirty and blocked prompt information can be generated, the controller of the air conditioner or the pump body can acquire the dirty and blocked prompt information, and the dirty and blocked prompt information is displayed through the display unit, so that the user can quickly clean the dirty and blocked object, thereby improving the service life of the pump body.

[0132] When the pump body is in an abnormal exhaust working state, abnormal exhaust prompt information can be generated, the controller of the air conditioner or the pump body can acquire the abnormal exhaust prompt information, and the abnormal exhaust prompt information is displayed through the display unit, so that the user or the maintenance personnel can repair the fault of the pump body.

[0133] In some examples, when the working state of the pump body is the idling state, the detection method further includes: controlling the pump body to stop.

[0134] When the pump body is in an idling state, basically no water enters the pump body, and the continuous operation of the pump body in the idling state can cause the temperature of the motor to rise, and long-time operation can cause the pump body to be damaged. In this case, stopping the pump body can protect the pump body.

[0135] When the pump body is applied to an air conditioner, if the pump body is in an idling state, it indicates that there is basically no water in the water pan of the air conditioner. In this case, controlling the pump body to stop will not affect the discharge of the condensate water of the air conditioner, and can avoid damage to other components or modules of the air conditioner caused by high temperature of the pump body, avoid high-temperature fire, make the use of the air conditioner safer, and prolong the service life of the air conditioner.

[0136] As Figure 3 shown, in some examples, the detection method of the pump body comprises:

[0137] Step 301: acquiring the phase voltage of the motor of the pump body;

[0138] Step 302: determining whether the phase voltage is greater than a first threshold value, if yes, executing step 303, if not, executing step 304;

[0139] Step 303: determining that the working state of the pump body is a normal working state

[0140] Step 304: determining whether the phase voltage is less than or equal to the first threshold value and greater than a second threshold value, if yes, executing step 305, if not, executing step 311;

[0141] Step 305: determining that the working state of the pump body is a low water level state;

[0142] Step 306: increasing the rotating speed of the pump body, and controlling the pump body to run at a first rotating speed for a first time length;

[0143] Step 307: determining whether the number of times of increasing the rotating speed of the pump body is greater than or equal to a fourth threshold value, if yes, executing step 308, if not, executing step 309;

[0144] Step 308: determining that the working state of the pump body is an abnormal exhaust working state;

[0145] Step 309: acquiring the phase voltage of the motor of the pump body again;

[0146] Step 310: determining whether the phase voltage is less than or equal to the first threshold value, if not, executing step 303, if yes, executing step 306;

[0147] Step 311: determining whether the phase voltage is less than or equal to the second threshold value and greater than a third threshold value, if yes, executing step 312, if not, executing step 314;

[0148] Step 312: determining that the working state of the pump body is an idling state;

[0149] Step 313: controlling the pump body to stop;

[0150] Step 314: determining whether the phase voltage is less than or equal to the third threshold value;

[0151] Step 315: determining that the working state of the pump body is a fault state.

[0152] The detection method of the pump body provided in the embodiments of the present application obtains the phase voltage of the pump body motor, and determines the working state of the pump body based on the phase voltage. On the one hand, the phase voltage of the pump body motor has small fluctuation, and the phase voltage can represent the working state of the pump body, so that the determination of the working state of the pump body is more accurate, the probability of false positives and false negatives of the working state of the pump body is reduced, and the user experience is improved. On the other hand, the phase voltage of the pump body motor can be collected through circuit connection, the phase voltage is more directly and quickly obtained, the accuracy of the phase voltage measurement is high, the accuracy is higher when the phase voltage is used as the determination basis than when the working state of the pump body is determined based on the flow in the prior art, and the signal collection is more convenient.

[0153] In some examples, as shown in Figure 4 The detection method comprises the following steps.

[0154] Step 401: Obtain the phase current of the pump body.

[0155] Step 402: Determine whether the phase current is greater than a fourth threshold value, if yes, execute step 403, and if no, execute step 404.

[0156] Step 403: Determine that the working state of the pump body is a normal working state.

[0157] Step 404: Determine whether the phase current is less than or equal to the fourth threshold value and greater than a fifth threshold value, if yes, execute step 405, and if no, execute step 406.

[0158] Step 405: Determine that the working state of the pump body is a dirty and blocked state.

[0159] Step 406: Determine whether the phase current is less than or equal to the fifth threshold value and greater than a sixth threshold value, if yes, execute step 407, and if no, execute step 408.

[0160] Step 407: Determine that the working state of the pump body is an idling state.

[0161] Step 408: Determine whether the phase current is less than or equal to the sixth threshold value, if yes, execute step 409, and if no, execute step 401.

[0162] Step 409: Determine that the working state of the pump body is a fault state.

[0163] The embodiment of the application provides a detection method of a pump body, which determines the working state of the pump body based on phase current. On the one hand, the phase current of the pump body has small fluctuation, and the phase current can represent the working state of the pump body, so that the working state of the pump body can be determined more accurately, the probability of false positives and false negatives of the working state of the pump body is reduced, and user experience can be improved. On the other hand, the phase current of the pump body can be collected through circuit connection, the phase current is more directly and quickly obtained, the accuracy of phase current measurement is high, compared with the current technology based on flow to determine the working state of the pump body, the phase current is used as a determination basis, the accuracy is higher, and the signal collection is more convenient.

[0164] In some examples, as shown in Figure 5 The detection method comprises the following steps.

[0165] Step 501: acquiring phase current of the pump body;

[0166] Step 502: determining whether the phase current is greater than a fourth threshold value, if yes, executing step 503, if not, executing step 504;

[0167] Step 503: determining that the working state of the pump body is a normal working state;

[0168] Step 504: determining whether the phase current is less than or equal to the fourth threshold value and greater than a fifth threshold value, if yes, executing step 505, if not, executing step 506;

[0169] Step 505: in the case that the pump body is turned on for more than a first time length, determining that the working state of the pump body is a dirty and blocked state;

[0170] Step 506: determining whether the phase current is less than or equal to the fifth threshold value and greater than a sixth threshold value, if yes, executing step 507, if not, executing step 508;

[0171] Step 507: in the case that the pump body is turned on for more than a first time length, determining that the working state of the pump body is an idle running state;

[0172] Step 508: determining whether the phase current is less than or equal to the sixth threshold value, if yes, executing step 509, if not, executing step 501;

[0173] Step 509: in the case that the pump body is turned on for more than a first time length, determining that the working state of the pump body is a fault state.

[0174] The embodiment of the present application provides a pump body detection method, which determines the working state of the pump body based on the phase current. On the one hand, the phase current of the pump body has small fluctuation, and the phase current can represent the working state of the pump body, so that the working state determination of the pump body is more accurate, the probability of false positives and false negatives of the working state of the pump body is reduced, and the user experience is improved. On the other hand, the phase current of the pump body can be collected through circuit connection, the phase current is more directly and quickly obtained, the accuracy of the phase current measurement is high, compared with the current technology based on flow to determine the working state of the pump body, the phase current is used as the determination basis, the accuracy is higher, and the signal collection is more convenient.

[0175] As shown in Figure 6 The embodiment of the present application provides a pump body detection method, which determines the working state of the pump body based on the phase current. On the one hand, the phase current of the pump body has small fluctuation, and the phase current can represent the working state of the pump body, so that the working state determination of the pump body is more accurate, the probability of false positives and false negatives of the working state of the pump body is reduced, and the user experience is improved. On the other hand, the phase current of the pump body can be collected through circuit connection, the phase current is more directly and quickly obtained, the accuracy of the phase current measurement is high, compared with the current technology based on flow to determine the working state of the pump body, the phase current is used as the determination basis, the accuracy is higher, and the signal collection is more convenient.

[0176] The embodiment of the present application provides a pump body detection method, which determines the working state of the pump body based on the phase current. On the one hand, the phase current of the pump body has small fluctuation, and the phase current can represent the working state of the pump body, so that the working state determination of the pump body is more accurate, the probability of false positives and false negatives of the working state of the pump body is reduced, and the user experience is improved. On the other hand, the phase current of the pump body can be collected through circuit connection, the phase current is more directly and quickly obtained, the accuracy of the phase current measurement is high, compared with the current technology based on flow to determine the working state of the pump body, the phase current is used as the determination basis, the accuracy is higher, and the signal collection is more convenient.

[0177] It can be understood that when the phase voltage of the pump body is low, the output power of the pump body is low, and there is little water in the pump cavity. In this case, the pump body may produce noise. By collecting the phase voltage of the pump body, the working state of the pump body can be accurately determined, especially the low water level working state of the pump body can be identified, which is beneficial to discovering the low water level running state of the pump body as soon as possible.

[0178] It can be understood that when the pump body is applied to an air conditioner, there are many factors causing noise of the air conditioner. By using the pump body detection method provided by the embodiment of the present application, the abnormal working state of the pump body can be found in time, which is beneficial to determining the cause of the noise of the air conditioner as soon as possible, the pump cavity of the pump body can be exhausted in time to suppress the noise of the air conditioner, and the user experience can be improved.

[0179] It can be understood that the pump body includes a motor, a rotating shaft and a vane wheel, the rotating shaft is connected to the output end of the motor, and the vane wheel is arranged on the rotating shaft. The pump body can extract liquid medium by driving the rotating shaft to rotate the vane wheel through the motor. The phase voltage is the voltage in the three-phase circuit of the motor. It can be understood that the motor includes three phases, and the voltages of the phases are the same. In actual use, any phase voltage in the three-phase voltage of the motor can be measured as the phase voltage. In actual implementation, the voltage detection module can be directly connected to the motor of the pump body to collect the phase voltage, so that the phase voltage can be accurately and conveniently obtained. For example, the amplitude calculation module can be connected to the motor to collect the phase voltage.

[0180] Considering that the working principle of the pump body is that the magnetic field B generated by the rotor permanent magnet of the motor of the pump body interacts with the stator winding current I to generate electromagnetic force F, so that the vane wheel of the pump body rotates, and the formula is F=BIL. B is the magnetic field generated by the rotor permanent magnet, L is the effective enameled wire length, that is, the core stack thickness, and I is the phase current. In the case of B and L being constant, the larger the phase current I is, the larger F is, and the larger the torque T is. According to the formula P=TΩ, the larger the torque is, the larger the output power of the motor of the pump body is. The pump body adopts a speed closed-loop control scheme, that is, Ω is constant. When the pump cavity has more water, it means that the pump blade load is larger, T is larger, F is larger, and therefore the phase current I is larger. The phase voltage U=Ea+IR, wherein Ea is the back electromotive force, and R is the resistance. The back electromotive force and the resistance are constant. Therefore, the larger the phase current I is, the larger the phase voltage U is. Based on this, the phase voltage U can be used to determine whether the pump body is in a normal working state. It can be understood that the larger the value of the phase voltage U is, the larger the output power of the motor of the pump body is. In this case, it can be indicated that the working state of the pump body is better. Conversely, the smaller the value of the phase voltage U of the pump body is, the smaller the output power of the motor of the pump body is. In this case, it can be indicated that the working state of the pump body is worse.

[0181] As shown in Figure 7 According to a third aspect of the present application, a pump body detection system is provided, comprising:

[0182] The detection unit 701 is configured to acquire the phase voltage and / or the phase current of the motor of the pump body.

[0183] The determination unit 702 is configured to determine the working state of the pump body based on the phase voltage and / or the phase current.

[0184] The detection system of the pump body provided in the embodiment of the present application acquires the phase voltage of the pump body motor through the detection unit 701, and the determination unit 702 can determine the working state of the pump body based on the phase voltage. On the one hand, the phase voltage of the pump body motor has small fluctuation, and the phase voltage can represent the working state of the pump body, which can make the determination of the working state of the pump body more accurate, reduce the probability of false positives and false negatives of the working state of the pump body, and improve the user experience. On the other hand, the phase voltage of the pump body motor can be collected through circuit connection, the acquisition of the phase voltage is more direct and fast, the accuracy of the phase voltage measurement is high, compared with the current technology of determining the working state of the pump body based on the flow, the accuracy of using the phase voltage as the determination basis is higher, and the signal collection is more convenient. The determination unit 702 can also determine the working state of the pump body based on the phase current. On the one hand, the phase current of the pump body has small fluctuation, and the phase current can represent the working state of the pump body, which can make the determination of the working state of the pump body more accurate, reduce the probability of false positives and false negatives of the working state of the pump body, and improve the user experience. On the other hand, the phase current of the pump body can be collected through circuit connection, the acquisition of the phase current is more direct and fast, the accuracy of the phase current measurement is high, compared with the current technology of determining the working state of the pump body based on the flow, the accuracy of using the phase current as the determination basis is higher, and the signal collection is more convenient. The determination unit 702 can also determine the working state of the pump body through the phase current and the phase voltage. The determination of the working state of the pump body through the phase current and the phase voltage can make the determination of the working state of the pump body more accurate.

[0185] It can be understood that when the phase voltage of the pump body is low, the output power of the pump body is low, and there is less water in the pump cavity. In this case, the pump body may produce noise. By collecting the phase voltage of the pump body, the working state of the pump body can be accurately determined, especially the low water level working state of the pump body can be identified, which is beneficial to discovering the low water level running state of the pump body as soon as possible.

[0186] It can be understood that when the pump body is applied to an air conditioner, there are many factors causing noise of the air conditioner. By using the detection method of the pump body provided in the embodiment of the present application, the abnormal working state of the pump body can be found in time, which is beneficial to quickly identifying the cause of the noise of the air conditioner, and the pump cavity of the pump body can be discharged in time to suppress the noise of the air conditioner, thereby improving the user experience.

[0187] It can be understood that the pump body includes a motor, a rotating shaft and a vane wheel, the rotating shaft is connected to the output end of the motor, and the vane wheel is arranged on the rotating shaft. The pump body can extract liquid medium by driving the rotating shaft to rotate the vane wheel through the motor. The phase voltage is the voltage in the three-phase circuit of the motor. It can be understood that the motor includes three phases, and the voltages of the three phases are the same. In actual use, any phase voltage in the three-phase voltage of the motor can be measured as the phase voltage. In actual implementation, the voltage detection module can be directly connected to the motor of the pump body to collect the phase voltage, so that the phase voltage can be accurately and conveniently obtained. For example, the amplitude calculation module can be connected to the motor to collect the phase voltage.

[0188] Considering that the working principle of the pump body is that the magnetic field B generated by the rotor permanent magnet of the motor of the pump body interacts with the stator winding current I to generate electromagnetic force F, so that the vane wheel of the pump body rotates, and the formula is F=BIL. B is the magnetic field generated by the rotor permanent magnet, L is the effective enameled wire length, that is, the core thickness, and I is the phase current. In the case of B and L being constant, the larger the phase current I is, the larger the F is, and the larger the torque T is. According to the formula P=TΩ, the larger the torque is, the larger the output power of the motor of the pump body is. The pump body adopts a speed closed-loop control scheme, that is, Ω is constant. When the pump cavity has more water, it means that the load of the pump vane is larger, T is larger, F is larger, and therefore the phase current I is larger. The phase voltage U=Ea+IR, wherein Ea is the back electromotive force, and R is the resistance. The back electromotive force and the resistance are constant. Therefore, the larger the phase current I is, the larger the phase voltage U is. Based on this, the phase voltage U can be used to determine whether the pump body is in a normal working state. It can be understood that the larger the value of the phase voltage U is, the larger the output power of the motor of the pump body is. In this case, it can be indicated that the working state of the pump body is better. Conversely, the smaller the value of the phase voltage U of the pump body is, the smaller the output power of the motor of the pump body is. In this case, it can be indicated that the working state of the pump body is worse. It can be understood that the larger the value of the phase current I is, the larger the output power of the motor of the pump body is. In this case, it can be indicated that the working state of the pump body is better. Conversely, the smaller the value of the phase current I of the pump body is, the smaller the output power of the motor of the pump body is. In this case, it can be indicated that the working state of the pump body is worse.

[0189] As shown in Figure 8 According to a fourth aspect of the embodiments of the present application, a detection device of a pump body is provided, which comprises a memory 801 storing a computer program and a processor 802 executing the computer program. When the processor 802 executes the computer program, the detection method of any of the above technical solutions is implemented.

[0190] The detection device of the pump body provided by the embodiment of the application obtains the phase voltage of the pump body motor through the detection unit, and the determination unit determines the working state of the pump body based on the phase voltage. On the one hand, the phase voltage of the pump body motor has small fluctuation, and the phase voltage can represent the working state of the pump body, so that the determination of the working state of the pump body is more accurate, the probability of false positives and false negatives of the working state of the pump body is reduced, and the user experience is improved. On the other hand, the phase voltage of the pump body motor can be collected through circuit connection, the acquisition of the phase voltage is more direct and fast, the accuracy of the phase voltage measurement is high, compared with the current technology that determines the working state of the pump body based on the flow, the accuracy of using the phase voltage as the determination basis is higher, and the signal collection is more convenient. The working state of the pump body can also be determined based on the phase current. On the one hand, the phase current of the pump body has small fluctuation, and the phase current can represent the working state of the pump body, so that the determination of the working state of the pump body is more accurate, the probability of false positives and false negatives of the working state of the pump body is reduced, and the user experience is improved. On the other hand, the phase current of the pump body can be collected through circuit connection, the acquisition of the phase current is more direct and fast, the accuracy of the phase current measurement is high, compared with the current technology that determines the working state of the pump body based on the flow, the accuracy of using the phase current as the determination basis is higher, and the signal collection is more convenient. The working state of the pump body can also be determined based on the phase current and the phase voltage. The determination of the working state of the pump body based on the phase current and the phase voltage can make the determination of the working state of the pump body more accurate.

[0191] It can be understood that when the phase voltage of the pump body is low, the output power of the pump body is low, and there is less water in the pump cavity. In this case, the pump body may produce noise. By collecting the phase voltage of the pump body, the working state of the pump body can be accurately determined, especially the low water level working state of the pump body can be identified, which is beneficial to discovering the low water level running state of the pump body as soon as possible.

[0192] It can be understood that when the pump body is applied to an air conditioner, there are many factors causing noise of the air conditioner. By using the detection method of the pump body provided by the embodiment of the application, the abnormal working state of the pump body can be found in time, which is beneficial to quickly identifying the cause of the noise of the air conditioner, and the pump cavity of the pump body can be vented in time to suppress the noise of the air conditioner, thereby improving the user experience.

[0193] It can be understood that the pump body includes a motor, a rotating shaft and a vane wheel, the rotating shaft is connected to the output end of the motor, and the vane wheel is arranged on the rotating shaft. The pump body can extract liquid medium by driving the rotating shaft to drive the vane wheel to rotate through the motor. The phase voltage is the voltage in the three-phase circuit flowing through the motor. It can be understood that the motor includes three phases, and the voltages of the three phases are the same. In actual use, any phase voltage in the three-phase voltage of the motor can be measured as the phase voltage. In actual implementation, the voltage detection module can be directly connected to the motor of the pump body to collect the phase voltage, so that the phase voltage can be accurately and conveniently obtained. For example, the amplitude calculation module can be connected to the motor to collect the phase voltage.

[0194] Considering that the working principle of the pump body is that the magnetic field B generated by the rotor permanent magnet of the motor of the pump body interacts with the stator winding current I to generate electromagnetic force F, so that the vane wheel of the pump body rotates, and the formula is F=BIL, B is the magnetic field generated by the rotor permanent magnet, L is the effective enameled wire length, that is, the core stack thickness, and I is the phase current. In the case of B and L being constant, the larger the phase current I is, the larger the F is, and the larger the torque T is. According to the formula P=TΩ, the larger the torque is, the larger the output power of the motor of the pump body is. The pump body adopts a speed closed-loop control scheme, that is, Ω is constant. When the pump cavity has more water, it means that the load of the pump vane is larger, T is larger, F is larger, and therefore the phase current I is larger. The phase voltage U=Ea+IR, wherein Ea is the back electromotive force, and R is the resistance. The back electromotive force and the resistance are constant. Therefore, the larger the phase current I is, the larger the phase voltage U is. Based on this, the phase voltage U can be used to determine whether the pump body is in a normal working state. It can be understood that the larger the value of the phase voltage U is, the larger the output power of the motor of the pump body is. In this case, it can be indicated that the working state of the pump body is better. Conversely, the smaller the value of the phase voltage U of the pump body is, the smaller the output power of the motor of the pump body is. In this case, it can be indicated that the working state of the pump body is worse. It can be understood that the larger the value of the phase current I is, the larger the output power of the motor of the pump body is. In this case, it can be indicated that the working state of the pump body is better. Conversely, the smaller the value of the phase current I of the pump body is, the smaller the output power of the motor of the pump body is. In this case, it can be indicated that the working state of the pump body is worse.

[0195] As shown in Figure 10 and Figure 11 According to a fifth aspect of the embodiments of the present application, an air conditioner is provided. The air conditioner comprises: a water collecting tray 800; a pump body 900 arranged in the water collecting tray 800; and a detection device as in the above technical solution, the detection device being configured to determine the working state of the pump body 900.

[0196] The air conditioner provided by the embodiments of the present application has all the beneficial effects of the detection device of the above technical solution.

[0197] The condensate water generated by the indoor unit of the air conditioner can be collected in the water collecting tray 800 during use of the air conditioner, and the pump body can discharge the water in the water collecting tray 800 to the outdoor, and the working state of the pump body can be detected through the setting of the detection device, so that the user or the maintenance personnel can clearly know the state of the pump body 900, and the stable operation of the air conditioner is facilitated.

[0198] In some examples, the air conditioner further comprises a voltage detection module connected to the pump body 900, and the detection device acquires the phase voltage of the pump body 900 through the voltage detection module.

[0199] The phase voltage of the pump body can be conveniently collected through the setting of the voltage detection module, and the collected phase voltage can be actively sent to the detection device after the voltage detection module acquires the phase voltage, so that the detection device can determine the working state of the pump body 900 based on the received phase voltage; similarly, the detection device can also actively collect the detection results of the voltage detection module to actively acquire the phase voltage and judge the working state of the pump body 900.

[0200] In some examples, the air conditioner further comprises a filter 1000 arranged at the water inlet of the pump body 900, and a current detection module connected to the pump body 900, and the detection device acquires the phase current of the pump body through the current detection module.

[0201] The air conditioner further comprises the filter 1000, and the setting of the filter 1000 can prevent impurities from entering the pump body 900 and alleviate the dirty and blocked state of the pump body 900, and the phase current of the pump body can be conveniently collected through the setting of the current detection module, and the collected phase current can be actively sent to the detection device after the current detection module acquires the phase current, so that the detection device can determine the working state of the pump body 900 based on the received phase current; similarly, the detection device can also actively collect the detection results of the current detection module to actively acquire the phase current and judge the working state of the pump body 900.

[0202] It can be understood that the filter 1000 can be a filter screen or filter cotton.

[0203] In the present application, the terms "first", "second", "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, "connection" can be fixed connection, or detachable connection, or integrally connected; "connection" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0204] In the description of the application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a particular direction, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0205] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0206] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of detecting a pump body, characterized by, The method comprises: acquiring phase voltage and / or phase current of a motor of the pump body; determining the working state of the pump body based on the phase voltage and / or the phase current; wherein the step of determining the working state of the pump body based on the phase voltage and / or the phase current comprises: in the case that the phase voltage is less than or equal to a first threshold value and / or the phase current is less than or equal to a fourth threshold value, determining that the working state of the pump body is an abnormal state; wherein the step of determining that the working state of the pump body is an abnormal state in the case that the phase voltage is less than or equal to the first threshold value and / or the phase current is less than or equal to the fourth threshold value comprises: in the case that the phase voltage is less than or equal to the first threshold value and greater than a second threshold value, determining that the working state of the pump body is a low water level state; in the case that the working state of the pump body is a low water level state, the detection method further comprises: increasing the rotating speed of the pump body, and controlling the pump body to operate at a first rotating speed for a first time length; after the pump body operates at the first rotating speed for the first time length, controlling the rotating speed of the pump body to decrease to a normal rotating speed, and acquiring the phase voltage of the motor of the pump body again; in the case that the number of times of increasing the rotating speed of the pump body exceeds a seventh threshold value and the phase voltage is less than or equal to the first threshold value, determining that the working state of the pump body is an abnormal exhaust working state.

2. The detection method according to claim 1, characterized in that, The step of determining the working state of the pump body based on the phase voltage and / or the phase current further comprises: in the case that the phase voltage is greater than the first threshold value and / or the phase current is greater than the fourth threshold value, determining that the working state of the pump body is a normal working state.

3. The detection method according to claim 2, characterized in that, The step of determining that the working state of the pump body is an abnormal state in the case that the phase voltage is less than or equal to the first threshold value and / or the phase current is less than or equal to the fourth threshold value further comprises: in the case that the phase voltage is less than or equal to the second threshold value and greater than a third threshold value and / or the phase current is less than or equal to a fifth threshold value and greater than a sixth threshold value, determining that the working state of the pump body is an idle state; in the case that the phase voltage is less than or equal to the third threshold value and / or the phase current is less than or equal to the sixth threshold value, determining that the working state of the pump body is a fault state; in the case that the phase current is less than or equal to the fourth threshold value and greater than the fifth threshold value, determining that the working state of the pump body is a dirty block state; wherein the value of the second threshold value is less than the value of the first threshold value, and the value of the third threshold value is less than the value of the second threshold value; wherein the value of the fifth threshold value is less than the value of the fourth threshold value, and the value of the sixth threshold value is less than the value of the fifth threshold value.

4. The detection method according to claim 3, characterized in that, The method further comprises: monitoring the opening time length of the pump body; The step of determining that the working state of the pump body is an abnormal state in the case that the phase current is less than or equal to the fourth threshold value comprises: in the case that the phase current is less than or equal to the fourth threshold value, greater than the fifth threshold value, and the opening time length of the pump body is greater than a first time length, determining that the working state of the pump body is a dirty block state. determining that the working state of the pump body is an idling state when the phase current is less than or equal to the fifth threshold value, greater than a sixth threshold value, and the opening duration of the pump body is greater than a first duration; determining that the working state of the pump body is a fault state when the phase current is less than or equal to the sixth threshold value, and the opening duration of the pump body is greater than the first duration.

5. The detection method according to claim 3, characterized in that, Further comprising: generating pump body normal operation information when the working state of the pump body is a normal operation state; generating low water level state prompt information when the working state of the pump body is a low water level state; generating idling prompt information when the working state of the pump body is an idling state; generating fault prompt information when the working state of the pump body is a fault state; generating dirty blockage prompt information when the working state of the pump body is a dirty blockage state; generating exhaust abnormal prompt information when the working state of the pump body is an exhaust abnormal working state.

6. The method of claim 3, wherein, In the case that the working state of the pump body is an idling state, the detection method further comprises: controlling the pump body to stop.

7. A computer readable storage medium, characterized in that, the computer readable storage medium stores a computer program, which implements the detection method of any one of claims 1 to 6.

8. A pump body inspection system characterized by, Comprising: a detection unit, configured to acquire a phase voltage and / or a phase current of a motor of the pump body; a determination unit, configured to determine a working state of the pump body based on the phase voltage and / or the phase current; the determination unit is specifically configured to determine that the working state of the pump body is an abnormal state when the phase voltage is less than or equal to a first threshold value and / or the phase current is less than or equal to a fourth threshold value; when the determination unit determines that the working state of the pump body is an abnormal state in the case that the phase voltage is less than or equal to the first threshold value and / or the phase current is less than or equal to the fourth threshold value, it is specifically configured to determine that the working state of the pump body is a low water level state when the phase voltage is less than or equal to the first threshold value and greater than a second threshold value; In the case that the working state of the pump body is a low water level state, the system is further configured to: increase the rotating speed of the pump body, control the pump body to operate at a first rotating speed for a first duration; after the pump body operates at the first rotating speed for the first duration, control the rotating speed of the pump body to decrease to a normal rotating speed, and acquire the phase voltage of the motor of the pump body again; determine that the working state of the pump body is an exhaust abnormal working state when the number of times of increasing the rotating speed of the pump body exceeds a seventh threshold value, and the phase voltage is less than or equal to the first threshold value.

9. A detection device for a pump body, characterized in that Comprising: a memory storing a computer program; a processor executing the computer program; wherein the processor implements the detection method of any one of claims 1 to 6 when executing the computer program.

10. An air conditioner characterized by comprising: The air conditioner comprises: a water pan; a pump body arranged in the water pan; The detection device of claim 9 is used to determine the working state of the pump body.

11. The air conditioner of claim 10, wherein The air conditioner further comprises: A voltage detection module is connected to the pump body, and the detection device obtains the phase voltage of the pump body through the voltage detection module; A filter is arranged at the water inlet of the pump body; A current detection module is connected to the pump body, and the detection device obtains the phase current of the pump body through the current detection module.

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