Dehumidifying apparatus and control method

Abstract

The application provides a dehumidification device and a control method, the control method comprising the following steps: S1, the dehumidification device is in normal operation; S2, the dehumidification device acquires the state of a liquid level switch; S3, it is judged whether the liquid level switch is turned off continuously for t1 time period, if yes, step S4 is entered, and if not, step S1 is returned; S4, a full water protection mode is entered, S4 comprising the following steps: S41, the compressor is stopped; S42, the rotating speed of a fan is controlled through a coil temperature TE, an ambient humidity HI and a water amount L of a water collecting tray until a third threshold temperature T3 <= TE < a fourth threshold temperature T4, a third threshold humidity A3 <= HI < a fourth threshold humidity A4 and a fourth threshold water amount L04 < L <= a third threshold water amount L03; S43, the fan is stopped, a display panel displays a full water protection, and a user is reminded to pull out a water tank to pour water. The control method of the dehumidification device provided by the application accelerates the evaporation of water in an evaporator and avoids causing a safety hazard.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of dehumidification, in particular to a dehumidification device and a control method. BACKGROUND

[0002] The current dehumidifier water full protection logic is: after detecting that the liquid level switch is turned off, the compressor and the fan are stopped, and the display panel displays the water full protection, thereby reminding the user that the water tank is full.

[0003] However, this logic does not consider that there will still be residual water on the actual evaporator. If the user sees the water full display code and removes the water tank, the residual water on the evaporator will drip and soak the bottom of the machine, which not only affects the appearance, but also causes rust, machine short circuit and a series of safety hazards.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] The present application aims to provide a dehumidification device and a control method to solve the problem that the existing dehumidification device does not consider that there will still be residual water on the actual evaporator. If the user sees the water full display code and removes the water tank, the residual water on the evaporator will drip and soak the bottom of the machine, which not only affects the appearance, but also causes rust, machine short circuit and a series of safety hazards.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0007] A control method of a dehumidification device, the control method of the dehumidification device comprising the following steps:

[0008] S1, the dehumidification device is normally operated;

[0009] S2, the dehumidification device acquires the state of the liquid level switch;

[0010] S3, it is judged whether the liquid level switch is turned off continuously for t1 time period. If yes, step S4 is entered, and if no, step S1 is returned;

[0011] S4, a water full protection mode is entered.

[0012] Step S4 comprises the following steps:

[0013] S41, the compressor is stopped;

[0014] S42, the fan is not stopped, the fan speed is controlled by the coil temperature TE, the environment humidity HI and the water amount L of the water collecting tray, until the third threshold temperature T3≤coil temperature TE<the fourth threshold temperature T4, the third threshold humidity A3≤environment humidity HI<the fourth threshold humidity A4, and the fourth threshold water amount L04<water amount L of the water collecting tray≤the third threshold water amount L03;

[0015] S43, the fan is stopped, the display panel displays the full water protection, and the user is reminded to pull out the water tank to pour water.

[0016] The control method of the dehumidifying device, steps S1-S4 are associated with each other and cannot be separated, in step S4, the full water protection mode is entered, steps S42-S43 are associated with each other and cannot be separated, the overall situation of the dehumidifying device is analyzed and processed in three dimensions through three variable values of the coil temperature TE, the environment humidity HI and the water amount L of the water receiving tray, the fan speed is accurately controlled, the water evaporation of the evaporator is accelerated, and the safety hidden danger caused by the residual water of the evaporator wetting the bottom of the machine is avoided; meanwhile, unnecessary rotation of the fan is avoided, which is beneficial to avoid unnecessary energy consumption of the air conditioner, and the energy saving and emission reduction performance of the air conditioner is ensured to the maximum extent.

[0017] Further, step S42 comprises the following steps:

[0018] S421, the coil temperature TE, the environment humidity HI and the water amount L of the water receiving tray are acquired;

[0019] S422, it is judged whether the coil temperature TE < the first threshold temperature T1, the environment humidity HI < the first threshold humidity A1 and the water amount L of the water receiving tray > the first threshold water amount L01, if yes, step S423 is entered; if no, step S425 is returned;

[0020] S423, the fan keeps running in the high wind gear for a third preset time t3;

[0021] S424, the coil temperature TE, the environment humidity HI and the water amount L of the water receiving tray are acquired;

[0022] S425, it is judged whether the first threshold temperature T1 ≤ the coil temperature TE < the second threshold temperature T2, the first threshold humidity A1 ≤ the environment humidity HI < the second threshold humidity A2 and the second threshold water amount L02 < the water amount L of the water receiving tray ≤ the first threshold water amount L01, if yes, step S426 is entered; if no, step S428 is entered;

[0023] S426, the fan keeps running in the medium wind gear for a fourth preset time t4;

[0024] S427, the coil temperature TE, the environment humidity HI and the water amount L of the water receiving tray are acquired;

[0025] S428, it is judged whether the second threshold temperature T2 ≤ the coil temperature TE < the third threshold temperature T3, the second threshold humidity A2 ≤ the environment humidity HI < the third threshold humidity A3 and the third threshold water amount L03 < the water amount L of the water receiving tray ≤ the second threshold water amount L02, if yes, step S429 is entered; if no, step S4211 is entered;

[0026] S429, the fan keeps running at the low wind level for a fifth preset time length t5;

[0027] S4210, the coil temperature TE, the ambient humidity HI and the water amount L of the water pan are acquired;

[0028] S4211, it is judged whether the third threshold temperature T3≤ the coil temperature TE < the fourth threshold temperature T4, the third threshold humidity A3≤ the ambient humidity HI < the fourth threshold humidity A4 and the fourth threshold water amount L04≤ the water amount L of the water pan < the third threshold water amount L03, if yes, step S43 is entered.

[0029] In step S42, steps S421-S4211 are interrelated and inseparable. In the water full protection mode, the coil temperature TE, the ambient humidity HI and the water pan water amount L are detected and judged by steps S421-S422. If the coil temperature TE < the first threshold temperature T1, HI < the first threshold humidity A1 and the water pan water amount L > the first threshold water amount L01, it indicates that it is more conducive to dehumidification, and the water amount L of the water pan has reached the first threshold water amount L01 of the water pan. Then, step S423 is entered, the fan is kept running at the high wind level for a third preset time t3, the water evaporation of the evaporator is accelerated to avoid safety hazards. In the water full protection mode, the coil temperature TE, the ambient humidity HI and the water pan water amount L after the fan is kept running at the high wind level for the third preset time t3 are detected and judged by steps S424-S425. If the first threshold temperature T1 ≤ the coil temperature TE < the second threshold temperature T2, the first threshold humidity A1 ≤ the ambient humidity HI < the second threshold humidity A2 and the second threshold water amount L02 < the water pan water amount L ≤ the first threshold water amount L01, it indicates that the coil temperature and humidity rise to a certain range value, and it is considered that the dehumidification capacity gradually decreases. Then, step S426 is entered, the fan is kept running at the medium wind level for a fourth preset time t4. In the water full protection mode, the coil temperature TE, the ambient humidity HI and the water pan water amount L after the fan is kept running at the medium wind level for the fourth preset time t4 are detected and judged by steps S427-S428. If the second threshold temperature T2 ≤ the coil temperature TE < the third threshold temperature T3, the second threshold humidity A2 ≤ the ambient humidity HI < the third threshold humidity A3 and the third threshold water amount L03 < the water pan water amount L ≤ the second threshold water amount L02, it indicates that the water amount L of the water pan continues to decrease. Then, step S429 is entered, the fan is kept running at the low wind level for a fifth preset time t5. In the water full protection mode, the coil temperature TE, the ambient humidity HI and the water pan water amount L after the fan is kept running at the low wind level for the fifth preset time t5 are detected and judged by steps S420-S421. If the third threshold temperature T3 ≤ the coil temperature TE < the fourth threshold temperature T4, the third threshold humidity A3 ≤ the ambient humidity HI < the fourth threshold humidity A4 and the fourth threshold water amount L04 < the water pan water amount L ≤ the third threshold water amount L03, it indicates that the coil temperature TE is about to rise to the fourth threshold temperature T4, the ambient humidity HI is about to rise to the fourth threshold humidity A4, and the water amount L of the water pan is about to decrease to the fourth threshold water amount L04, which is the minimum water amount that the water pan can bear. It indicates that the water amount L of the water pan is almost none, and no special treatment is needed. Then, step S42 is entered, at this time the fan is stopped, the display panel displays water full protection, and the user is reminded to pull out the water tank to pour water.

[0030] In summary, in step S42, steps S421-S4211 are interrelated and inseparable, and the overall situation of the dehumidification device is analyzed and processed in three dimensions by the three variable values of the coil temperature TE, the ambient humidity HI, and the water amount L of the water pan. Four levels of judgment are made on the coil temperature TE, the ambient humidity HI, and the water amount L of the water pan. First, the first level of judgment condition is met, then the second level of judgment condition is met after running for a period of time, then the third level of judgment condition is met after running for a period of time, then the fourth level of judgment condition is met after running for a period of time, and then step S42 is entered. At this time, the fan is stopped, the display panel displays the full water protection, and the user is reminded to pull out the water tank to pour water. On the one hand, the overall situation of the dehumidification device can be analyzed and processed through the layer-by-layer judgment conditions, and the operation of the fan can be more accurately controlled, so that the moisture in the evaporator is gradually evaporated, and the safety hazard of the machine bottom caused by the residual moisture in the evaporator is avoided. On the other hand, unnecessary fan rotation can be avoided, which is conducive to avoiding unnecessary energy consumption of the air conditioner and maximizing the energy-saving and emission-reducing performance of the air conditioner.

[0031] Further, in the process of step S4, the dehumidification device acquires the state of the liquid level switch in real time, and determines whether the liquid level switch is closed continuously for a period of t2. If yes, the full water protection mode is exited, and the dehumidification device is normally operated.

[0032] By acquiring the state of the liquid level switch in real time, if the liquid level switch is closed continuously for a period of t2, the dehumidification device can exit the full water protection mode and normally operate.

[0033] Further, the coil temperature TE is detected by a temperature sensor.

[0034] The setting facilitates the detection of the coil temperature TE.

[0035] Further, the ambient humidity HI is detected by a humidity sensor.

[0036] The setting facilitates the detection of the ambient humidity HI.

[0037] Further, the water amount L of the water pan is detected by a water amount sensor.

[0038] The setting facilitates the detection of the water amount L of the water pan.

[0039] Further, the value of t1 is in the range of [1, 5], and the unit of t1 is s.

[0040] Further, the value of t2 is in the range of [5, 10], and the unit of t2 is s.

[0041] Further, the value ranges of t3, t4 and t5 are all [2, 6], and the units of t3, t4 and t5 are min.

[0042] In a second aspect, the application provides a dehumidification device, which comprises a compressor, a fan, an evaporator, a display panel and a water tank, a water receiving tray is arranged below the evaporator, the dehumidification device comprises a computer readable storage medium storing a computer program and a processor, and the computer program is read and run by the processor to realize the control method of the dehumidification device.

[0043] Compared with the prior art, the dehumidification device and the control method have the following beneficial effects:

[0044] The dehumidification device and the control method, the steps S1-S4 are interrelated and inseparable, in the step S4, the water full protection mode is entered, the steps S42-S43 are interrelated and inseparable, the overall situation of the dehumidification device is analyzed and processed in three dimensions through the three variable values of the coil temperature TE, the environment humidity HI and the water amount L of the water receiving tray, the fan speed is accurately controlled, the water evaporation of the evaporator is accelerated, and the safety hidden danger caused by the residual water of the evaporator wetting the bottom of the machine is avoided; at the same time, unnecessary rotation of the fan is avoided, which is beneficial to avoid unnecessary energy consumption of the air conditioner, and the energy saving and emission reduction performance of the air conditioner is ensured to the greatest extent. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The flowchart of the control method of the dehumidification device is shown in the embodiment of the application.

[0046] Figure 2 The flowchart of the control method of the dehumidification device after entering the water full protection mode is shown in the embodiment of the application. DETAILED DESCRIPTION

[0047] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict. The descriptions of "first", "second" and the like in the embodiments of the application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the application.

[0048] The application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0049] Embodiment 1

[0050] The embodiment provides a control method of a dehumidification device, the dehumidification device comprising a compressor, a fan, an evaporator, a display panel and a water tank, and a water collecting tray is arranged below the evaporator.

[0051] The control method of the dehumidification device comprises the following steps:

[0052] S1, the dehumidification device is normally operated;

[0053] S2, the dehumidification device acquires the state of a liquid level switch;

[0054] The state of the liquid level switch comprises switch-off and switch-on of the liquid level switch, and the liquid level switch is also called a liquid level sensor and is a switch for controlling the on-off of a circuit. The switch-off of the liquid level switch indicates that the water in the water tank reaches a preset maximum water level, and the switch-on of the liquid level switch indicates that the water in the water tank does not reach the preset maximum water level.

[0055] S3, whether the liquid level switch is switched off continuously for a period of t1 is judged, if yes, the step S4 is entered, and if not, the step S1 is returned;

[0056] S4, a water full protection mode is entered.

[0057] The step S4 comprises the following steps:

[0058] S41, the compressor is stopped;

[0059] S42, the fan is not stopped, the rotation speed of the fan is controlled through the coil temperature TE, the ambient humidity HI and the water amount L of the water collecting tray, until the third threshold temperature T3≤ the coil temperature TE < the fourth threshold temperature T4, the third threshold humidity A3≤ the ambient humidity HI < the fourth threshold humidity A4 and the fourth threshold water amount L04 < the water amount L of the water collecting tray ≤ the third threshold water amount L03;

[0060] S43, the fan is stopped, the display panel displays the water full protection, and the user is reminded to pull out the water tank to pour water.

[0061] The control method of the dehumidification device, the steps S1-S4 are associated with each other and cannot be separated, the water full protection mode is entered in the step S4, the steps S42-S43 are associated with each other and cannot be separated, the overall situation of the dehumidification device is analyzed and processed in three dimensions through the three variable values of the coil temperature TE, the ambient humidity HI and the water amount L of the water collecting tray, the rotation speed of the fan is accurately controlled, the water evaporation of the evaporator is accelerated, and the safety hidden danger caused by the residual water of the evaporator wetting the bottom of the machine is avoided; meanwhile, unnecessary rotation of the fan is avoided, which is beneficial to avoiding unnecessary energy consumption of the air conditioner and ensuring the energy saving and emission reduction performance of the air conditioner to the greatest extent.

[0062] Specifically, the step S42 comprises the following steps:

[0063] S421, obtaining the coil temperature TE, the ambient humidity HI and the water amount L of the water pan;

[0064] S422, judging whether the coil temperature TE < the first threshold temperature T1, the ambient humidity HI < the first threshold humidity A1 and the water amount L of the water pan > the first threshold water amount L01, if yes, entering the step S423; if no, entering the step S425;

[0065] S423, keeping the fan running at the high wind level for a third preset time length t3;

[0066] S424, obtaining the coil temperature TE, the ambient humidity HI and the water amount L of the water pan;

[0067] S425, judging whether the first threshold temperature T1 ≤ the coil temperature TE < the second threshold temperature T2, the first threshold humidity A1 ≤ the ambient humidity HI < the second threshold humidity A2 and the second threshold water amount L02 < the water amount L of the water pan ≤ the first threshold water amount L01, if yes, entering the step S426; if no, entering the step S428;

[0068] S426, keeping the fan running at the medium wind level for a fourth preset time length t4;

[0069] S427, obtaining the coil temperature TE, the ambient humidity HI and the water amount L of the water pan;

[0070] S428, judging whether the second threshold temperature T2 ≤ the coil temperature TE < the third threshold temperature T3, the second threshold humidity A2 ≤ the ambient humidity HI < the third threshold humidity A3 and the third threshold water amount L03 < the water amount L of the water pan ≤ the second threshold water amount L02, if yes, entering the step S429; if no, entering the step S4211;

[0071] S429, keeping the fan running at the low wind level for a fifth preset time length t5;

[0072] S4210, obtaining the coil temperature TE, the ambient humidity HI and the water amount L of the water pan;

[0073] S4211, judging whether the third threshold temperature T3 ≤ the coil temperature TE < the fourth threshold temperature T4, the third threshold humidity A3 ≤ the ambient humidity HI < the fourth threshold humidity A4 and the fourth threshold water amount L04 < the water amount L of the water pan ≤ the third threshold water amount L03, if yes, entering the step S43.

[0074] In step S42, steps S421-S4211 are interrelated and inseparable. In the water full protection mode, the coil temperature TE, the ambient humidity HI and the water pan water amount L are detected and judged by steps S421-S422. If the coil temperature TE < the first threshold temperature T1, HI < the first threshold humidity A1 and the water pan water amount L > the first threshold water amount L01, it indicates that it is more conducive to dehumidification, and the water amount L of the water pan has reached the first threshold water amount L01 of the water pan. Then, step S423 is entered, the fan is kept running at the high wind level for a third preset time t3, the water evaporation of the evaporator is accelerated to avoid safety hazards. In the water full protection mode, the coil temperature TE, the ambient humidity HI and the water pan water amount L after the fan is kept running at the high wind level for the third preset time t3 are detected and judged by steps S424-S425. If the first threshold temperature T1 ≤ the coil temperature TE < the second threshold temperature T2, the first threshold humidity A1 ≤ the ambient humidity HI < the second threshold humidity A2 and the second threshold water amount L02 < the water pan water amount L ≤ the first threshold water amount L01, it indicates that the coil temperature and humidity rise to a certain range value, and it is considered that the dehumidification capacity gradually decreases. Then, step S426 is entered, the fan is kept running at the medium wind level for a fourth preset time t4. In the water full protection mode, the coil temperature TE, the ambient humidity HI and the water pan water amount L after the fan is kept running at the medium wind level for the fourth preset time t4 are detected and judged by steps S427-S428. If the second threshold temperature T2 ≤ the coil temperature TE < the third threshold temperature T3, the second threshold humidity A2 ≤ the ambient humidity HI < the third threshold humidity A3 and the third threshold water amount L03 < the water pan water amount L ≤ the second threshold water amount L02, it indicates that the water amount L of the water pan continues to decrease. Then, step S429 is entered, the fan is kept running at the low wind level for a fifth preset time t5. In the water full protection mode, the coil temperature TE, the ambient humidity HI and the water pan water amount L after the fan is kept running at the low wind level for the fifth preset time t5 are detected and judged by steps S420-S421. If the third threshold temperature T3 ≤ the coil temperature TE < the fourth threshold temperature T4, the third threshold humidity A3 ≤ the ambient humidity HI < the fourth threshold humidity A4 and the fourth threshold water amount L04 < the water pan water amount L ≤ the third threshold water amount L03, it indicates that the coil temperature TE is about to rise to the fourth threshold temperature T4, the ambient humidity HI is about to rise to the fourth threshold humidity A4, and the water amount L of the water pan is about to decrease to the fourth threshold water amount L04, which is the minimum water amount that the water pan can bear. It indicates that the water amount L of the water pan is almost none, and no special treatment is needed. Then, step S42 is entered, at this time the fan is stopped, the display panel displays water full protection, and the user is reminded to pull out the water tank to pour water.

[0075] In summary, in step S42, steps S421-S4211 are interrelated and inseparable, and the overall situation of the dehumidifying device is analyzed and processed in three dimensions by the three variable values of the coil temperature TE, the ambient humidity HI, and the water pan water amount L. Four levels of judgment are made on the coil temperature TE, the ambient humidity HI, and the water pan water amount L. First, the first level of judgment condition is met, then the second level of judgment condition is met after running for a period of time, then the third level of judgment condition is met after running for a period of time, then the fourth level of judgment condition is met after running for a period of time, and then step S42 is entered. At this time, the fan is stopped, the display panel displays the water full protection, and the user is reminded to pull out the water tank to pour water. On the one hand, the overall situation of the dehumidifying device can be analyzed and processed through the layer-by-layer judgment conditions, and the operation of the fan can be more accurately controlled, so that the moisture in the evaporator is gradually evaporated, and the safety hazard of the machine bottom caused by the residual moisture in the evaporator is avoided. On the other hand, unnecessary fan rotation can be avoided, which is conducive to avoiding unnecessary energy consumption of the air conditioner and maximizing the energy-saving and emission-reducing performance of the air conditioner.

[0076] Specifically, during the running of step S4, the dehumidifying device acquires the state of the liquid level switch in real time, judges whether the liquid level switch is closed continuously for a period of t2, and if so, exits the water full protection mode and the dehumidifying device runs normally.

[0077] Specifically, the coil temperature TE is detected by a temperature sensor.

[0078] This setting facilitates the detection of the coil temperature TE.

[0079] Specifically, the ambient humidity HI is detected by a humidity sensor.

[0080] This setting facilitates the detection of the ambient humidity HI.

[0081] Specifically, the water pan water amount L is detected by a water amount sensor.

[0082] This setting facilitates the detection of the water pan water amount L.

[0083] Specifically, the first threshold temperature T1

[0084] Specifically, the first threshold temperature T1, the second threshold temperature T2, the third threshold temperature T3, the fourth threshold temperature T4, the first threshold humidity A1, the second threshold humidity A2, the third threshold humidity A3, the fourth threshold humidity A4, the fourth threshold water amount L04, the third threshold water amount L03, the second threshold water amount L02 and the first threshold water amount L01 are system preset values, and are not specifically limited.

[0085] Specifically, t1, t2, t3, t4 and t5 each represent a time period, and t1, t2, t3, t4 and t5 are system preset values, and t1, t2, t3, t4 and t5 are not limited.

[0086] More specifically, the value range of t1 is [1, 5], the unit of t1 is s, and t1 can take any value in 1-5s.

[0087] Preferably, in the embodiment, the value of t1 is 3s.

[0088] More specifically, the value range of t2 is [5, 10], the unit of t2 is s, and t2 can take any value in 5-10s.

[0089] Preferably, in the embodiment, the value of t2 is 6s.

[0090] More specifically, the value range of t3 is [2, 6], the unit of t3 is min, and t3 can take any value in 2-6min.

[0091] Preferably, in the embodiment, the value of t3 is 3min.

[0092] More specifically, the value range of t4 is [2, 6], the unit of t4 is min, and t4 can take any value in 2-6min.

[0093] Preferably, in the embodiment, the value of t4 is 4min.

[0094] More specifically, the value range of t5 is [2, 6], the unit of t5 is min, and t5 can take any value in 2-6min.

[0095] Preferably, in the embodiment, the value of t5 is 5min.

[0096] The dehumidifying device provided in the embodiment, steps S1-S4 are interrelated and inseparable, in step S4, the water full protection mode is entered, steps S421-S423 are interrelated and inseparable, through three variable values of the coil temperature TE, the environment humidity HI and the water amount L of the water receiving tray, the fan speed is accurately controlled, the water evaporation of the evaporator is accelerated, it is ensured that all the water is dropped in the water tank, then the water full protection is displayed to remind the user, and the safety hidden danger caused by the residual water of the evaporator wetting the bottom of the machine is avoided.

[0097] Embodiment 2

[0098] The embodiment provides a dehumidifying device, the dehumidifying device comprises a compressor, a fan, an evaporator, a display panel and a water tank, a water receiving tray is arranged below the evaporator, the dehumidifying device comprises a computer readable storage medium storing a computer program and a processor, when the computer program is read and run by the processor, the control method of the dehumidifying device is realized.

[0099] For the dehumidifying device, in addition to the compressor, the fan, the evaporator, the display panel, the water tank and the water receiving tray, other related components such as a shell are further included, and the specific structure and the specific assembly relationship of the related components are prior art, and thus are not described here.

[0100] The dehumidifying device and the control method of the dehumidifying device have the same advantages as the prior art, and thus are not described here.

[0101] Although the present application is disclosed as above, the present application is not limited to this. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and thus the protection scope of the present application should be subject to the range defined by the claims.

Claims

1. A control method for a dehumidification device, characterized in that, The control method for the dehumidification device includes the following steps: S1. The dehumidification device is operating normally; S2. The dehumidification device obtains the status of the liquid level switch; S3. Determine whether the liquid level switch is open for a continuous time period t1. If yes, proceed to step S4; otherwise, return to step S1. S4. Enter full water protection mode; Step S4 includes the following steps: S41, Compressor shutdown: S42. The fan does not stop. The fan speed is controlled by the coil temperature TE, the ambient humidity HI and the water volume in the drip tray L until the third threshold temperature T3 ≤ coil temperature TE < fourth threshold temperature T4, the third threshold humidity A3 ≤ ambient humidity HI < fourth threshold humidity A4 and the fourth threshold water volume L04 < water volume in the drip tray L ≤ third threshold water volume L03. S43, the fan stops, the display panel shows the water full protection, reminding the user to remove the water tank to empty the water; Step S42 includes the following steps: S421. Obtain coil temperature TE, ambient humidity HI, and water volume in the drip tray L; S422. Determine whether the coil temperature TE < first threshold temperature T1, the ambient humidity HI < first threshold humidity A1, and the water volume in the water tray L > first threshold water volume L01. If yes, proceed to step S423; otherwise, proceed to step S425. S423, The fan maintains high-speed operation for the third preset duration t3; S424. Obtain coil temperature TE, ambient humidity HI, and water volume in the drip tray L; S425. Determine whether the first threshold temperature T1 ≤ coil temperature TE < second threshold temperature T2, the first threshold humidity A1 ≤ ambient humidity HI < second threshold humidity A2, and the second threshold water volume L02 < water volume in the drip tray L ≤ first threshold water volume L01. If yes, proceed to step S426; otherwise, proceed to step S428. S426, The fan maintains medium speed operation for the fourth preset duration t4; S427. Obtain coil temperature TE, ambient humidity HI, and water volume in the drip tray L; S428. Determine whether the second threshold temperature T2 ≤ coil temperature TE < third threshold temperature T3, the second threshold humidity A2 ≤ ambient humidity HI < third threshold humidity A3, and the third threshold water volume L03 < water volume in the drip tray L ≤ second threshold water volume L02. If yes, proceed to step S429; if no, proceed to step S4211. S429, The fan maintains low wind speed operation for the fifth preset duration t5; S4210, obtain coil temperature TE, ambient humidity HI and water volume in drip tray L; S4211. Determine whether the third threshold temperature T3 ≤ coil temperature TE < fourth threshold temperature T4, the third threshold humidity A3 ≤ ambient humidity HI < fourth threshold humidity A4, and the fourth threshold water volume L04 < water volume in the drip tray L ≤ third threshold water volume L03. If so, proceed to step S43.

2. The control method for a dehumidification device according to claim 1, characterized in that, During the operation of step S4, the dehumidifier obtains the status of the liquid level switch in real time and determines whether the liquid level switch is closed for a continuous time period t2. If so, it exits the water full protection mode and the dehumidifier operates normally.

3. The control method for a dehumidification device according to claim 1, characterized in that, The coil temperature TE is detected by a temperature sensor.

4. The control method for a dehumidification device according to claim 1, characterized in that, The ambient humidity (HI) is detected by a humidity sensor.

5. The control method for a dehumidification device according to claim 1, characterized in that, The water volume L in the water receiving tray is detected by a water volume sensor.

6. The control method for a dehumidification device according to claim 1, characterized in that, The range of values ​​for t1 is [1, 5], and the unit of t1 is seconds.

7. The control method for a dehumidification device according to claim 2, characterized in that, The range of values ​​for t2 is [5, 10], and the unit of t2 is seconds.

8. The control method for a dehumidification device according to claim 1, characterized in that, The values ​​of t3, t4 and t5 are all in the range of [2, 6], and the unit of t3, t4 and t5 is min.

9. A dehumidification device, characterized in that, The dehumidification device includes a compressor, a fan, an evaporator, a display panel, and a water tank. A water collection tray is provided below the evaporator. The dehumidification device includes a computer-readable storage medium storing a computer program and a processor. The computer program is read and executed by the processor to implement a control method for a dehumidification device as described in any one of claims 1 to 8.

Images