Mobile air conditioner and anomaly detection method for water fetching machine of mobile air conditioner

Abstract

The invention discloses a mobile air conditioner and an anomaly detection method for a water fetching machine of the mobile air conditioner. The water pan is used for receiving and storing condensate water generated during operation of the mobile air conditioner; the water fetching machine is arranged at a preset position on the water receiving disc and is used for spraying water in the water receiving disc to the condenser through a water fetching wheel; and a controller. The method comprises the following steps: periodically acquiring a current rotating speed of the water fetching machine at a preset sampling interval within a preset sampling duration; judging whether the current rotating speed obtained each time is abnormal or not according to a preset normal rotating speed range; and when the abnormal judgment result meets the preset falling condition, it is judged that falling of the water fetching wheel of the water fetching machine is abnormal, the movable air conditioner is controlled to stop, and alarm feedback is output. According to the scheme, abnormal falling of the water fetching wheel can be detected, and water level detection abnormity of the water fetching machine is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology, and in particular to a mobile air conditioner and a mobile air conditioner water pump abnormality detection method. BACKGROUND

[0002] An air conditioner generates condensate water when operating, which needs to be stored by an internally provided water pan. In order to avoid the condensate water overflowing, the water level of the water pan needs to be detected. With the maturity of water pump motor technology, a direct current water pump motor is used to replace the water level switch to detect the water level state of the water pan, and the speed of the water pump motor is calculated through the feedback signal of the speed of the water pump motor. When the water level of the water pan is different, the resistance of the water to the water pump wheel of the fixedly installed water pump is different, and the speed of the water pump wheel will be different based on the same driving force. Therefore, the water level state of the water pan can be monitored in real time by comparing the speeds.

[0003] When the water level is detected by the speed of the water pump wheel of the water pump, it is easy to be affected by environmental factors, such as the water pump wheel of the water pump motor and the motor shaft falling off, which directly affects the sampled motor speed, resulting in a high speed sampling value. When the water pan is full, it cannot timely alarm and stop, and even when the water overflows the ground, it still does not alarm and stop. SUMMARY

[0004] In view of the above problems of the prior art, the present application provides a mobile air conditioner and a mobile air conditioner water pump abnormality detection method, which can detect abnormal falling of the water pump wheel and avoid abnormal detection of the water level of the water pump.

[0005] The embodiment of the present application provides a mobile air conditioner, comprising:

[0006] A refrigeration circuit, in which refrigerant circulates sequentially through a compressor, a condenser, a throttling component, and an evaporator;

[0007] A water pan for receiving and storing condensate water generated by the mobile air conditioner when operating;

[0008] A water pump configured at a predetermined position on the water pan, for spraying water in the water pan to the condenser by a water pump wheel;

[0009] A controller configured to:

[0010] Periodically acquire a current speed of the water pump at a predetermined sampling interval within a predetermined sampling duration;

[0011] Judge whether the current speed acquired each time is abnormal according to a predetermined normal speed range;

[0012] When the abnormality judgment result meets a preset shedding condition, it is determined that the water hitting wheel of the water hitting machine is abnormally shed, the mobile air conditioner is controlled to stop, and an alarm feedback is output.

[0013] Preferably, the controller is further configured to:

[0014] Calculate the number of abnormalities of the current rotating speed in the collected current rotating speed;

[0015] Determine whether the water hitting wheel of the water hitting machine is abnormally shed according to the number of abnormalities.

[0016] Further, the controller is further configured to:

[0017] When the number of abnormalities is greater than a preset first threshold, it is determined that the water hitting wheel is abnormally shed;

[0018] When the number of abnormalities is not greater than the first threshold, it is determined that the water hitting wheel is not abnormally shed.

[0019] Preferably, the controller is further configured to:

[0020] Calculate the number of samples of the current rotating speed periodically collected in the sampling duration;

[0021] The product of the number of samples and a preset first proportion is taken as the first threshold.

[0022] Preferably, the controller is further configured to:

[0023] When it is determined that the water hitting wheel is not abnormally shed, the average value of the current rotating speed in which the rotating speed is not abnormal in the collected current rotating speed is recorded as a detected running rotating speed;

[0024] The water level of the water pan is determined according to the running rotating speed.

[0025] Preferably, the controller is further configured to:

[0026] Obtain the running rotating speed of the water hitting machine, and monitor the working state of the compressor;

[0027] When the running rotating speed is lower than a preset first rotating speed threshold, and the working state is in a running state, an abnormality detection instruction is generated, and the current rotating speed of the water hitting machine is periodically obtained.

[0028] Preferably, the controller is further configured to:

[0029] When the running rotating speed is lower than a preset second rotating speed threshold, an alarm feedback of full water is output, and the mobile air conditioner is controlled to stop;

[0030] The second rotating speed threshold is less than the first rotating speed threshold.

[0031] Preferably, the controller is further configured to:

[0032] When the current rotating speed obtained for K consecutive times in the abnormality judgment result is abnormal, it is determined that the water hitting wheel of the water hitting machine is abnormal, and an alarm feedback is output, K being a preset value.

[0033] Preferably, the controller is further configured to:

[0034] When the abnormality judgment result does not have K consecutive abnormal rotating speeds, and the number of abnormalities is lower than the first threshold value, it is determined that the water hitting wheel of the water hitting machine is not abnormal.

[0035] The embodiment of the present application also provides a water hitting machine abnormality detection method for a mobile air conditioner, the mobile air conditioner comprising:

[0036] A refrigeration circuit, for circulating refrigerant through a compressor, a condenser, a throttling component and an evaporator in sequence;

[0037] A water pan, for receiving and storing condensate water generated when the mobile air conditioner is running;

[0038] A water hitting machine, configured at a preset position on the water pan, for spraying water in the water pan to the condenser through a water hitting wheel;

[0039] A controller;

[0040] The method comprises:

[0041] Periodically obtaining the current rotating speed of the water hitting machine at a preset sampling interval within a preset sampling duration;

[0042] Determining whether the current rotating speed obtained each time is abnormal according to a preset normal rotating speed range;

[0043] When the abnormality judgment result meets a preset shedding condition, it is determined that the water hitting wheel of the water hitting machine is abnormal, the mobile air conditioner is controlled to stop running, and an alarm feedback is output.

[0044] Compared with the prior art, the mobile air conditioner and the mobile air conditioner water hitting machine abnormality detection method disclosed by the application comprise: a refrigeration circuit, which is used for circulating refrigerant through a compressor, a condenser, a throttling component and an evaporator in sequence; a water pan, which is used for receiving and storing condensate water generated when the mobile air conditioner is running; a water hitting machine, which is arranged at a preset position on the water pan and is used for spraying water in the water pan to the condenser through a water hitting wheel; and a controller, which is used for periodically acquiring a current rotating speed of the water hitting machine at a preset sampling interval within a preset sampling duration; judging whether the current rotating speed acquired each time is abnormal according to a preset normal rotating speed range; determining that the water hitting wheel of the water hitting machine is abnormally detached when an abnormality judgment result meets a preset detachment condition, controlling the mobile air conditioner to stop running, and outputting an alarm feedback. The application scheme can detect abnormal detachment of the water hitting wheel and avoid water level detection abnormality of the water hitting machine. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is a structural schematic diagram of a mobile air conditioner provided by an embodiment of the application;

[0046] Figure 2 is a partial structural schematic diagram of a refrigeration circuit provided by an embodiment of the application;

[0047] Figure 3 is a control process schematic diagram of water level monitoring of the prior art;

[0048] Figure 4 is a flowchart of work performed by a controller provided by an embodiment of the application;

[0049] Figure 5 is a flowchart of work performed by the controller when voltage adjustment is performed;

[0050] Figure 6 is another flowchart of work performed by the controller when voltage adjustment is performed;

[0051] Figure 7 is a flowchart of work performed by the controller when water level monitoring is performed;

[0052] Figure 8 is a flowchart of work performed by the controller before abnormality detection;

[0053] Figure 9 is another flowchart of work performed by the controller before abnormality detection;

[0054] Figure 10 is a flowchart of a mobile air conditioner water hitting machine abnormality detection method provided by an embodiment of the application. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0056] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0057] The terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0058] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] The air conditioner provided in the embodiments of the present application is specifically a mobile air conditioner. The mobile air conditioner provided in the embodiments of the present application comprises:

[0060] A refrigeration circuit, for circulating refrigerant through a compressor, a condenser, a throttling component and an evaporator in sequence;

[0061] A water pan for receiving and storing condensate water generated during operation of the mobile air conditioner;

[0062] A water striking machine arranged at a predetermined position on the water pan, for spraying water in the water pan to the condenser through a water striking wheel;

[0063] Reference is made to Figure 1FIG. 1 is a structural schematic diagram of a mobile air conditioner according to an embodiment of the present application. The mobile air conditioner has a controller 140, a refrigeration circuit 130, and a cooling circuit 150. The refrigeration circuit 130 circulates refrigerant to perform a vapor compression refrigeration cycle. The cooling circuit 150 is connected to the refrigeration circuit 130 by a connection pipe to form a refrigeration circuit for the refrigerant circulation, and is used to cool the refrigeration circuit.

[0064] The mobile air conditioner also includes a water pan 30 for collecting condensate water generated by the operation of the condenser, and a water sprayer 40 for spraying the condensate water in the water pan 30 onto the condenser.

[0065] The mobile air conditioner also includes a lower fan 50 for causing external air to flow through the condenser to adjust the temperature of the condenser.

[0066] Referring to FIG. 1, Figure 2 FIG. 2 is a partial structural schematic diagram of a refrigeration circuit according to an embodiment of the present application. The refrigeration circuit performs a refrigeration cycle of an air conditioner by using a compressor 131, an indoor heat exchanger 132, a throttling component 133, and an outdoor heat exchanger 134. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to air that has been adjusted and heat-exchanged. Among them, the indoor heat exchanger 132 is usually provided in an indoor unit 110, the compressor 131 and the outdoor heat exchanger 134 are usually provided in an outdoor unit 120, the throttling component 133 can be provided in the indoor unit 110 or the outdoor unit 120, and the indoor heat exchanger 132 and the outdoor heat exchanger 134 are used as a condenser or an evaporator. When the indoor heat exchanger 132 is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger 132 is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

[0067] The compressor 131 compresses refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process. The throttling component 133 expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the throttling component 133 and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor 131. The evaporator can achieve a refrigeration effect by heat exchange with a material to be cooled using the latent heat of evaporation of the refrigerant. Throughout the cycle, the air conditioner can adjust the temperature of the indoor space.

[0068] To avoid water overflow in the water pan, the prior art generally places a water level switch in the mobile air conditioner water pan to detect the water level height of the water pan, referring to FIG. 3. Figure 3Fig. 1 is a schematic diagram of a control process for water level monitoring in the prior art. Two water level switches are used. The water level switches are used to detect the water level state, and the switches are divided into two states: on or off. During machine operation, if the low water level switch is closed, the lower fan is turned to low wind, reducing the condensate accumulation speed and increasing the evaporation speed. If the high water level switch is closed, the entire machine is directly shut down for protection.

[0069] The technical solution identifies whether the water level reaches the preset height by judging the on or off state. If it is higher than the preset value, the machine is quickly shut down for protection to prevent the condensate from flowing to the ground and causing loss.

[0070] With the maturity of the water punching motor technology, using a direct current water punching motor to replace the water level switch to detect the water pan water level state has gradually become an industry trend, greatly reducing the cost of the entire machine. The water in the water tank is sprayed onto the condenser by the water punching wheel of the water punching motor to accelerate heat exchange, which improves energy efficiency and avoids shutdown caused by rapid accumulation of condensate. The speed of the water punching motor is calculated through the speed feedback signal of the water punching motor. When the water pan water level is high, the speed of the water punching motor will decrease. By comparing the speeds, the water pan water level state can be monitored in real time. However, the application of the water punching motor to detect the water level is easily affected by many environmental factors, for example, the water punching wheel and the motor shaft of the water punching motor may fall off, which may be complete or intermittent. At this time, the resistance received by the motor will be greatly reduced, directly affecting the sampled motor speed, causing the sampled speed value to be too high, and the bottom pan to be full of water. The machine cannot be shut down in time, and even if the water overflows the ground, the machine still does not alarm and shut down, causing serious property loss.

[0071] To solve the above technical problems, the controller provided in the embodiments of the present application is configured to perform the following steps:

[0072] Periodically acquiring the current speed of the water punching machine at a preset sampling interval within a preset sampling duration;

[0073] Judging whether the current speed acquired each time is abnormal according to a preset normal speed range;

[0074] When the abnormality judgment result meets a preset falling off condition, determining whether the water punching wheel of the water punching machine is abnormally falling off, controlling the mobile air conditioner to shut down, and outputting an alarm feedback.

[0075] In the specific implementation of the present embodiment, reference is made to Figure 4 Fig. 2 is a flowchart of the work performed by the controller provided in the embodiments of the present application. When the controller performs water level monitoring, the following steps are specifically performed:

[0076] Step S401: Start sampling and start calculating the sampling duration time1;

[0077] Step S402: Collect the current speed SC at a sampling interval of 100 ms;

[0078] It should be noted that in the embodiment, 100 ms is taken as the sampling interval for speed monitoring, and in other embodiments, other sampling intervals can be used to detect the speed and make abnormality judgments.

[0079] In step S403, it is judged whether the current speed obtained is abnormal according to the normal speed range;

[0080] In step S404, the abnormality judgment result of the current speed is recorded.

[0081] In step S405, it is judged whether the sampling duration time1≥3s is true.

[0082] If yes, step S406 is executed.

[0083] If no, step S402 is returned.

[0084] It should be noted that in the embodiment, 3s is taken as the sampling duration for speed monitoring, and in other embodiments, other sampling durations can be used to detect the speed and make abnormality judgments.

[0085] In step S406, it is judged whether the recorded abnormality judgment result meets the shedding condition.

[0086] If yes, step S408 is executed.

[0087] If no, step S407 is executed.

[0088] In step S407, it is determined that the water beating wheel of the water beater does not have a shedding abnormality.

[0089] In step S408, it is determined that the water beating wheel of the water beater has a shedding abnormality.

[0090] In step S409, the mobile air conditioner is controlled to stop and an alarm feedback is output.

[0091] It should be noted that the shedding condition is specifically a shedding detection standard set for the abnormality judgment result of the current speed collected in the sampling period, and can be specifically designed as an abnormality number or an abnormality distribution of the abnormality judgment results of the speeds obtained in sequence. That is, the shedding condition can be determined by statistical analysis of the speed in the sampling duration, and the specific shedding condition does not affect the specific implementation of the scheme.

[0092] By monitoring the change of the speed in the preset duration, it is judged whether the speed is in the normal speed range, and by the statistical abnormality judgment result, it is determined whether the water beating wheel has an abnormal shedding, so as to accurately realize the shedding alarm of the water beating wheel and avoid the water level detection abnormality of the water beater or the detection failure leading to water overflow.

[0093] In another embodiment provided by the application, the controller is further configured to:

[0094] counting the number of abnormal speeds in the current speed collected;

[0095] determining whether the water pumping wheel of the water pumping machine is detached according to the number of abnormalities.

[0096] In the implementation of the embodiment, refer to Figure 5 is another flowchart of the work performed by the controller provided in the embodiment of the application, and the controller specifically performs the following steps when monitoring the water level:

[0097] Step S501, sampling starts, and the sampling duration time1 is started to be calculated;

[0098] Step S502, the current speed SC is collected with 100 ms as the sampling interval;

[0099] Step S503, it is determined whether the current speed obtained is abnormal according to the normal speed range;

[0100] Step S504, the abnormality determination result of the current speed is recorded;

[0101] Step S505, it is determined whether the sampling duration time1 is greater than or equal to 3 s.

[0102] If yes, step S506 is performed;

[0103] If no, step S502 is returned to;

[0104] Step S506, the number M of abnormal speeds in the current speed collected is calculated;

[0105] Step S507, it is determined whether the water pumping wheel of the water pumping machine is detached according to the number M of abnormalities;

[0106] If yes, step S509 is performed;

[0107] If no, step S508 is performed;

[0108] Step S508, it is determined that the water pumping wheel of the water pumping machine is not detached.

[0109] Step S509, it is determined that the water pumping wheel of the water pumping machine is detached.

[0110] Step S510, the mobile air conditioner is controlled to stop and an alarm feedback is output.

[0111] When the abnormal detachment is determined, the number of abnormal speeds monitored in the sampling duration can be used for identification, and the number of abnormalities is counted to accurately determine whether the water pumping wheel is abnormal.

[0112] In yet another embodiment provided by the present application, the controller is further configured to:

[0113] When the abnormal quantity is greater than the preset first threshold, it is determined that the water beating wheel is abnormally fallen off;

[0114] When the abnormal quantity is not greater than the first threshold, it is determined that the water beating wheel is not abnormally fallen off.

[0115] In the implementation of the present embodiment, refer to Figure 6 is another flowchart of the work performed by the controller provided by the embodiments of the present application. When the controller performs water level monitoring, the following steps are specifically performed:

[0116] Step S601, sampling starts, and the sampling duration time1 is started to be calculated;

[0117] Step S602; collect the current rotating speed SC with 100ms as the sampling interval;

[0118] Step S603, determine whether the current rotating speed SC≥SK is true.

[0119] If yes, execute step S604;

[0120] If no, execute step S605;

[0121] It should be noted that in the present embodiment, the normal rotating speed range is set as [0, SK).

[0122] Step S604, record the abnormal judgment result of the current rotating speed as abnormal, and execute step S606;

[0123] Step S605, record the abnormal judgment result of the current rotating speed as normal, and execute step S606;

[0124] Step S606, determine whether the sampling duration time1≥3s is true.

[0125] If yes, execute step S607;

[0126] If no, return to step S602;

[0127] Step S607, calculate the abnormal quantity M of the rotating speed abnormality in the collected current rotating speed;

[0128] Step S608, determine whether the abnormal quantity M≥M th is true;

[0129] If yes, execute step S610;

[0130] If no, execute step S609;

[0131] Step S609, determining whether the water hitting wheel of the water hitting machine is abnormal.

[0132] Step S610, determining whether the water hitting wheel of the water hitting machine is abnormal.

[0133] Step S611, controlling the mobile air conditioner to stop and outputting an alarm feedback.

[0134] In the abnormal falling judgment, the abnormal number of the abnormal rotation speed monitored in the sampling time length can be used for identification, and when the statistical abnormal number is greater than the preset threshold, it is indicated that the abnormal data of the rotation speed is too high for multiple times in the sampling time length, and at this time, it is determined that the water hitting wheel is abnormal.

[0135] In another embodiment of the present application, the controller is further configured to:

[0136] Calculate the sampling number of the current rotation speed periodically collected in the sampling time length;

[0137] The product of the sampling number and the preset first proportion is used as the first threshold.

[0138] In the embodiment, when determining the first threshold, the threshold is determined according to the sampling number of the current rotation speed periodically collected in the sampling time length.

[0139] The product of the sampling number and the preset first proportion is used as the first threshold.

[0140] Specifically, when the sampling interval is 100 ms, 30 current rotation speeds can be collected in 3 s of the sampling time length, the first proportion is set to 50%, the first threshold is 15, and when the abnormal number is greater than 15, it is indicated that the rotation shaft is seriously slipping or even falling.

[0141] By detecting the abnormal number, the rotation speed is detected through the short sampling interval in the sampling time length, the slipping phenomenon of the water hitting wheel can be detected when the water hitting wheel slips, i.e., the rotation speed of the water hitting machine suddenly changes, and the accuracy of the abnormal detection is ensured.

[0142] In another embodiment of the present application, the controller is further configured to:

[0143] When it is determined that the water hitting wheel does not fall abnormally, the average value of the current rotation speed in which the rotation speed does not occur abnormally is recorded as the detected running rotation speed;

[0144] The water level of the water receiving tray is determined according to the running rotation speed.

[0145] In the embodiment, refer to Figure 7Fig. 1 is a flowchart of a work process of a controller for water level monitoring according to an embodiment of the present application, and the controller performs the following steps when monitoring the water level:

[0146] Step S701, sampling starts, and a sampling duration time1 is calculated;

[0147] Step S702, the current rotating speed SC is collected with a sampling interval of 100 ms;

[0148] Step S703, the current rotating speed is judged to be abnormal or not according to the normal rotating speed range;

[0149] Step S704, the abnormal judgment result of the current rotating speed is recorded;

[0150] Step S705, it is judged whether the sampling duration time1 is greater than or equal to 3 s.

[0151] If yes, step S706 is executed;

[0152] If no, step S702 is returned;

[0153] Step S706, the abnormal number M of the rotating speed in the collected current rotating speed is calculated;

[0154] Step S707, it is judged whether the water beating wheel of the water beating machine is off according to the abnormal number M;

[0155] If yes, other control processes are executed;

[0156] If no, step S708 is executed;

[0157] Step S708, it is determined that the water beating wheel of the water beating machine is not off.

[0158] Step S709, the rotating speed sum V of all the current rotating speeds in which the rotating speed is not abnormal is calculated;

[0159] Step S710, the average rotating speed v 平 .

[0160] is calculated, which is the quotient of the rotating speed sum V of all the current rotating speeds in which the rotating speed is not abnormal and the normal number N of the rotating speed in which the rotating speed is not abnormal, i.e. 平 v 平 = V / N.

[0161] Step S711, the water level of the water receiving tray is determined according to the running rotating speed.

[0162] It should be noted that, when the water level is determined according to the corresponding running speed, the water level can be determined through the matching relationship between the predetermined speed and the water level. According to the running speed, the corresponding water level in the preset water level matching database is matched; when the water level is calculated, the water level can also be calculated according to the simulation calculation model of the speed-water level.

[0163] When the water level is calculated, the abnormal speed value is removed, the average value of the normal speed is calculated, and the accuracy of the water level calculation is ensured.

[0164] In another embodiment provided by the application, the controller is further configured to:

[0165] Obtain the running speed of the water dispenser and monitor the working state of the compressor;

[0166] When the running speed is lower than the preset first speed threshold, and the working state is in the running state, an abnormal detection instruction is generated, and the current speed of the water dispenser is periodically obtained.

[0167] In the embodiment, refer to Figure 8 is a flowchart of the work performed by the controller before abnormal detection according to an embodiment of the application. When the controller performs water level monitoring, the following steps are specifically performed:

[0168] Step S801, obtaining the running speed of the water dispenser;

[0169] Step S802, determining whether the running speed is greater than or equal to SK*0.8.

[0170] If not, step S803 is performed;

[0171] If yes, return to step S801;

[0172] It should be noted that SK is the maximum running speed of the water dispenser. That is, when performing abnormal detection, the water amount in the water tray needs to meet a certain water amount requirement. When the water amount is large, the speed is slow, which may cause the water beating wheel to fall off.

[0173] Step S803, detecting the running state of the compressor;

[0174] Step S804, determining whether the running state is in the working state.

[0175] If yes, step S805 is performed;

[0176] If not, return to step S801;

[0177] Step S805, generating an abnormal detection instruction;

[0178] Step S806, sampling starts, and the sampling time length time1 is calculated.

[0179] After step S806, the specific steps of the abnormality detection are performed, i.e., steps S401-S409 are performed.

[0180] Only when the water level reaches a certain height and the compressor is running to ensure continuous generation of condensed water, the water wheel shedding logic is entered to save power consumption.

[0181] In yet another embodiment provided by the application, the controller is further configured to:

[0182] When the running speed is lower than a preset second speed threshold, output a water full alarm feedback and control the mobile air conditioner to stop running;

[0183] The second speed threshold is smaller than the first speed threshold.

[0184] In the specific implementation of the embodiment, referring to Figure 9 is another flowchart of the work performed before the abnormality detection of the controller provided by the embodiment of the application. When the controller performs water level monitoring, the following steps are specifically performed:

[0185] Step S901: Obtain the running speed of the water wheel.

[0186] Step S902: Determine whether the running speed is greater than or equal to SK*0.8.

[0187] If not, perform step S903;

[0188] If yes, return to step S905;

[0189] It should be noted that SK is the maximum running speed of the water wheel. That is, when performing the abnormality detection, the water amount in the water tray needs to meet a certain water amount requirement. When the water amount is large, the speed is slow, which may cause the water wheel to fall off.

[0190] Step S903: Determine whether the running speed is greater than or equal to SG.

[0191] It should be noted that the second speed threshold SG is smaller than the first speed threshold SK*0.8, and the second speed threshold is generally set to the speed when the water is full.

[0192] If yes, return to step S901;

[0193] If not, perform step S904;

[0194] Step S904: Output a water full alarm feedback and control the mobile air conditioner to stop running.

[0195] When the running speed is lower than the preset second rotating speed threshold, the compressor is controlled to stop and a full water alarm feedback is output.

[0196] In step S905, the running state of the compressor is detected.

[0197] In step S906, it is judged whether the running state is in the working state.

[0198] If yes, step S907 is executed.

[0199] If no, step S901 is returned.

[0200] In step S907, an abnormality detection instruction is generated.

[0201] In step S908, sampling starts and the sampling time length time1 is calculated.

[0202] After step S908, the specific steps of abnormality detection are executed, i.e., steps S401-S409 are executed.

[0203] Only when the water level reaches a certain height and the compressor runs to ensure continuous generation of condensed water, the logic of determining the falling of the water beating wheel is entered to save power consumption. When the water level reaches a certain height, full water monitoring is performed to avoid water overflow.

[0204] In another embodiment of the present application, the controller is further configured to:

[0205] When the current rotating speed obtained for K consecutive times in the abnormality judgment result is abnormal, it is determined that the water beating wheel of the water beating machine is abnormal in beating slip, an alarm feedback is output, and K is a preset value.

[0206] In the specific implementation of the present embodiment, when the abnormality of the water beating wheel is detected, in addition to the abnormality detection by counting the number of abnormalities, other alternative means can also be used, i.e., the abnormality judgment result obtained according to the identification order of the current rotating speed is used for abnormality judgment.

[0207] When the current rotating speed obtained for at least two consecutive times in the abnormality judgment result is abnormal, it is indicated that the rotating speed of the water beating machine is suddenly changed. After the two abnormalities, the rotating speed of the water beating machine returns to normal. At this time, it is difficult to identify the "slip" abnormality by only counting the number of abnormalities, i.e., the water beating wheel slips at a certain moment, the rotating speed is abnormal, and then returns to normal. At this time, it is determined that the slip occurs. Through the detection of the continuous judgment result, this abnormal phenomenon can be identified, the abnormality detection is realized, and an alarm feedback is output.

[0208] In another embodiment of the present application, the controller is further configured to:

[0209] When the abnormality judgment result does not appear continuously K times of abnormal rotation speed, and the number of abnormalities is lower than the first threshold value, it is determined that the water hitting wheel of the water hitting machine does not appear abnormality.

[0210] In the specific implementation of the embodiment, based on the identification of continuous abnormal rotation speed, the abnormality can be identified when the abnormal rotation speed appears continuously K times, and through the identification of the number of abnormalities and continuous abnormalities, the slip or falling off abnormality can be accurately realized.

[0211] And when the abnormality judgment result does not appear continuously K times of abnormal rotation speed, and the number of abnormalities is lower than the first threshold value, an occasional abnormal rotation speed may be abnormal data caused by collection error, and it is not used as an abnormality judgment basis, and it is determined that the water hitting wheel of the water hitting machine does not appear abnormality, so as to ensure normal working of the water hitting machine.

[0212] The embodiment of the application also provides a mobile air conditioner water hitting machine abnormality detection method applied to a mobile air conditioner, wherein the air conditioner comprises:

[0213] A refrigeration circuit, in which refrigerant is circulated through a compressor, a condenser, a throttling component and an evaporator in sequence;

[0214] A water receiving tray for receiving and storing condensate water generated when the mobile air conditioner is running;

[0215] A water hitting machine arranged at a preset position on the water receiving tray, which is used for spraying water in the water receiving tray to the condenser through a water hitting wheel;

[0216] A controller;

[0217] Referring to Figure 10 is a flowchart of the mobile air conditioner water hitting machine abnormality detection method provided by the embodiment of the application, and the method comprises the following steps:

[0218] Step S1, periodically acquiring a current rotation speed of the water hitting machine at a preset sampling interval within a preset sampling duration;

[0219] Step S2, judging whether the current rotation speed acquired each time is abnormal according to a preset normal rotation speed range;

[0220] Step S3, when the abnormality judgment result meets a preset falling off condition, determining that the water hitting wheel of the water hitting machine falls off abnormally, controlling the mobile air conditioner to stop running, and outputting an alarm feedback.

[0221] It should be noted that the mobile air conditioner water hitting machine abnormality detection method provided by the embodiment of the application is the same as all the flow steps performed by the controller of the air conditioner in the above embodiment, and the working principles and beneficial effects of the two are one-to-one corresponding, and thus will not be described again.

[0222] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing relevant hardware, and the program can be stored in a computer readable storage medium. When the program is executed, the program can include the processes of the above-mentioned embodiment methods. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM), a random access memory (RAM), or the like.

[0223] The above is the preferred embodiment of the present application. It should be pointed out that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements are also considered to be within the scope of protection of the present application.

Claims

1. A mobile air conditioner characterized by comprising: The method comprises: a refrigeration circuit for circulating refrigerant through a compressor, a condenser, a throttling component and an evaporator in sequence; a water pan for receiving and storing condensed water generated during operation of the mobile air conditioner; a water dispenser configured at a predetermined position on the water pan, for spraying water in the water pan to the condenser through a water spraying wheel; a controller configured to: periodically acquire a current rotating speed of the water dispenser at a predetermined sampling interval within a predetermined sampling duration; determine whether each acquired current rotating speed is abnormal according to a predetermined normal rotating speed range; when the abnormality determination result meets a predetermined shedding condition, determine that the water spraying wheel of the water dispenser is abnormally shed, control the mobile air conditioner to stop running, and output an alarm feedback.

2. The air conditioner of claim 1, wherein The controller is further configured to: calculate the number of abnormal rotating speeds in the acquired current rotating speeds; determine whether the water spraying wheel of the water dispenser is abnormally shed according to the number of abnormal rotating speeds.

3. The air conditioner of claim 2, wherein The controller is further configured to: when the number of abnormal rotating speeds is greater than a predetermined first threshold, determine that the water spraying wheel is abnormally shed; when the number of abnormal rotating speeds is not greater than the first threshold, determine that the water spraying wheel is not abnormally shed.

4. The mobile air conditioner of claim 3, wherein The controller is further configured to: calculate the number of current rotating speeds periodically acquired within the sampling duration; take the product of the number of current rotating speeds and a predetermined first proportion as the first threshold.

5. The mobile air conditioner of claim 2, wherein The controller is further configured to: when it is determined that the water spraying wheel is not abnormally shed, record the average value of the current rotating speeds in which the rotating speed is not abnormal in the acquired current rotating speeds as a detected operating rotating speed; determine the water level of the water pan according to the operating rotating speed.

6. The mobile air conditioner of claim 1, wherein The controller is further configured to: acquire the operating rotating speed of the water dispenser and monitor the working state of the compressor; when the operating rotating speed is lower than a predetermined first rotating speed threshold and the working state is in a running state, generate an abnormality detection instruction and start periodically acquiring the current rotating speed of the water dispenser.

7. The mobile air conditioner of claim 6, wherein The controller is further configured to: when the operating rotating speed is lower than a predetermined second rotating speed threshold, output a full water alarm feedback and control the mobile air conditioner to stop running; The second rotating speed threshold is less than the first rotating speed threshold.

8. The mobile air conditioner of claim 3, wherein The controller is further configured to: when the current rotating speed is abnormal for K consecutive times in the abnormality determination result, determine that the water spraying wheel of the water dispenser is abnormally slipping, and output an alarm feedback, K being a predetermined value.

9. The mobile air conditioner of claim 8, wherein The controller is further configured to: when the current rotating speed is not abnormal for K consecutive times in the abnormality determination result and the number of abnormal rotating speeds is lower than the first threshold, determine that the water spraying wheel of the water dispenser is not abnormal.

10. A method for detecting an abnormality of a water pump of a mobile air conditioner, characterized by, The mobile air conditioner comprises: a refrigeration circuit for circulating refrigerant through a compressor, a condenser, a throttling component and an evaporator in sequence; a water pan for receiving and storing condensed water generated during operation of the mobile air conditioner; a water dispenser configured at a predetermined position on the water pan, for spraying water in the water pan to the condenser through a water spraying wheel; a controller; The method comprises: periodically acquiring a current rotating speed of the water dispenser at a predetermined sampling interval within a predetermined sampling duration; Determine whether the current rotating speed obtained each time is abnormal according to a preset normal rotating speed range; When the abnormality determination result meets a preset falling-off condition, determine that the water hitting wheel of the water hitting machine falls off abnormally, control the mobile air conditioner to stop, and output an alarm feedback.

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