Dehumidifier and dehumidifier filter cleaning reminder control method

Abstract

The present invention discloses a dehumidifier and a dehumidifier filter cleaning reminder control method. The controller obtains the fan speed according to a preset cycle period, and after each time the fan speed is obtained, determines the duration conversion coefficient based on the currently obtained fan speed, wherein the fan speed and the duration conversion coefficient are positively correlated; the total duration conversion coefficient is obtained based on the currently determined duration conversion coefficient and the historically determined duration conversion coefficient; the current attenuation coefficient is determined based on the current cumulative running time of the fan; the cumulative running equivalent time of the fan is obtained based on the total duration conversion coefficient, the current cumulative running time, the current attenuation coefficient, and a first preset coefficient, wherein the first preset coefficient is related to the number of heat exchange tubes; when the cumulative running equivalent time reaches a preset running time set value, the dehumidifier is controlled to start the filter cleaning reminder function. The technical solution of the present invention can improve the accuracy of the dehumidifier filter cleaning reminder control.

Description

Technical Field

[0001] The present invention relates to the technical field of dehumidifiers, and in particular to a dehumidifier and a dehumidifier filter cleaning reminder control method. Background Art

[0002] Existing dehumidifier filter cleaning reminders simply calculate the dehumidifier's cumulative fan run time. When the cumulative fan run time reaches a set value, the filter cleaning reminder is triggered to remind the user to clean the filter. After the user cleans the filter, the user manually resets the function, and the cumulative fan run time calculation is repeated. This filter cleaning reminder mode ignores the fact that under actual operating conditions of the dehumidifier, the fan air volume and the degree of dust accumulation on the filter surface vary. Judging only by the cumulative fan run time will affect the accuracy of determining whether the dehumidifier filter needs to be cleaned, thereby affecting the accuracy of the dehumidifier filter cleaning reminder control. Summary of the Invention

[0003] An object of the embodiments of the present invention is to provide a dehumidifier and a dehumidifier filter cleaning reminder control method, which can improve the accuracy of the dehumidifier filter cleaning reminder control.

[0004] In order to achieve the above object, an embodiment of the present invention provides a dehumidifier, comprising:

[0005] A housing, wherein the housing is provided with an air inlet and an air outlet, and the air inlet is provided with a filter for filtering air;

[0006] A fan is provided in the housing, and is used to drive air into the housing from the air inlet and out from the air outlet;

[0007] a heat exchanger, disposed in the housing, comprising an evaporator and a condenser, wherein the evaporator and the condenser each comprise a plurality of rows of heat exchange tubes, the evaporator being used to exchange heat with air to condense moisture in the air, and the condenser being used to heat the air from which moisture has been removed;

[0008] a refrigerant circuit, in which the refrigerant sequentially passes through a compressor, the condenser, a throttling component, and the evaporator to perform a refrigeration cycle;

[0009] Controller for:

[0010] The fan speed is obtained according to a preset cycle period, and after each time the fan speed is obtained, a duration conversion coefficient is determined according to the currently obtained fan speed; wherein the fan speed and the duration conversion coefficient are positively correlated;

[0011] Obtain the total duration conversion coefficient based on the currently determined duration conversion coefficient and the historically determined duration conversion coefficient;

[0012] determining a current attenuation coefficient according to the current accumulated operating time of the fan;

[0013] Obtaining the cumulative equivalent operation time of the fan according to the total time conversion coefficient, the current cumulative operation time, the current attenuation coefficient, and a first preset coefficient; wherein the first preset coefficient is related to the number of heat exchange tubes;

[0014] When the accumulated running time reaches a preset running time setting value, the dehumidifier is controlled to start a filter cleaning reminder function.

[0015] Furthermore, the controller determines the duration conversion coefficient according to the currently obtained fan speed, specifically including:

[0016] Determine the target speed partition to which the currently obtained fan speed belongs among a plurality of preset speed partitions;

[0017] According to the preset functional relationship between the speed partition and the duration conversion coefficient, the target duration conversion coefficient corresponding to the target speed partition is determined, and the target duration conversion coefficient is used as the duration conversion coefficient corresponding to the currently obtained fan speed; wherein the functional relationship between the speed partition and the duration conversion coefficient is:

[0018] a represents the time conversion coefficient, v represents the fan speed, V1~V p Indicates the preset p speed partitions, k, b1~b i-1 and c1~c p-i Both are positive numbers, i represents the index of the speed partition, and the larger the value of i, the larger the corresponding fan speed and duration conversion coefficient.

[0019] Furthermore, the controller obtains a total duration conversion coefficient based on the currently determined duration conversion coefficient and the historically determined duration conversion coefficient, specifically including:

[0020] According to the formula A=a0+a1+…+a n-1 +a n Calculate the total duration conversion coefficient; where A represents the total duration conversion coefficient, n represents the current number of cycles, and a n Indicates the current determined duration conversion coefficient, a0~a n-1 represents all historically determined duration conversion coefficients, and a0 represents the initial duration conversion coefficient.

[0021] Furthermore, the controller is further configured to:

[0022] The current cumulative operating time of the fan is calculated based on the fixed duration of the cycle period and the current number of cycles; wherein Y=T×n, Y represents the current cumulative operating time of the fan, T represents the fixed duration of the cycle period, and n represents the current number of cycles.

[0023] Furthermore, the controller determines the current attenuation coefficient according to the current accumulated running time of the fan, specifically including:

[0024] Determining a target duration partition to which the current accumulated operating duration of the wind turbine belongs among a plurality of preset duration partitions;

[0025] According to the preset functional relationship between the duration partition and the attenuation coefficient, the target attenuation coefficient corresponding to the target duration partition is determined, and the target attenuation coefficient is used as the current attenuation coefficient corresponding to the current accumulated running time; wherein the functional relationship between the duration partition and the attenuation coefficient is:

[0026] d fan represents the attenuation coefficient, t represents the cumulative running time of the fan, T1~T q Represents the preset q time partitions, d and e1~e q-1 They are all positive numbers, j represents the index of the duration partition, and the larger the value of j is, the longer the corresponding cumulative running time of the fan is and the smaller the corresponding attenuation coefficient is.

[0027] Furthermore, the controller obtains the cumulative operation converted time of the fan according to the total time conversion coefficient, the current cumulative operation time, the current attenuation coefficient and the first preset coefficient, specifically including:

[0028] According to the formula Y1=A×Y×d exchanger ×d fan Calculate the cumulative equivalent running time of the fan; where Y1 represents the cumulative equivalent running time, A represents the total time conversion coefficient, Y represents the current cumulative running time, d exchanger represents the first preset coefficient, d fan Indicates the current attenuation coefficient.

[0029] Furthermore, the controller is further configured to:

[0030] After determining that the filter cleaning is completed, the dehumidifier is controlled to start the reset function, so that the number of cycles is reset and restarted, and the timer is reset and restarted; wherein, the timer is used to indicate the real-time cumulative duration of each cycle.

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

[0032] When the accumulated running converted time does not reach the preset running time setting value, the current number of cycles is updated by adding 1, and the fan speed corresponding to the next cycle period is waited for to be obtained.

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

[0034] Determining whether the current accumulated operating time of the fan reaches a preset operating time limit;

[0035] When the current accumulated operating time reaches the operating time limit, a fan maintenance reminder is issued.

[0036] To achieve the above objectives, an embodiment of the present invention further provides a dehumidifier filter cleaning reminder control method, which is applicable to any of the above-mentioned dehumidifiers. The method is executed by the controller and includes:

[0037] The fan speed is obtained according to a preset cycle period, and after each time the fan speed is obtained, a duration conversion coefficient is determined according to the currently obtained fan speed; wherein the fan speed and the duration conversion coefficient are positively correlated;

[0038] Obtain the total duration conversion coefficient based on the currently determined duration conversion coefficient and the historically determined duration conversion coefficient;

[0039] determining a current attenuation coefficient according to the current accumulated operating time of the fan;

[0040] Obtaining the cumulative equivalent operation time of the fan according to the total time conversion coefficient, the current cumulative operation time, the current attenuation coefficient, and a first preset coefficient; wherein the first preset coefficient is related to the number of heat exchange tubes;

[0041] When the accumulated running time reaches a preset running time setting value, the dehumidifier is controlled to start a filter cleaning reminder function.

[0042] Compared with the prior art, the embodiments of the present invention provide a dehumidifier and a dehumidifier filter cleaning reminder control method, wherein the dehumidifier includes: a casing, an air inlet and an air outlet are provided on the casing, and a filter for filtering the air is provided at the air inlet; a fan is provided in the casing, and is used to drive the air into the casing from the air inlet and discharged from the air outlet; a heat exchanger is provided in the casing, and includes an evaporator and a condenser, and the evaporator and the condenser both include multiple rows of heat exchange tubes, the evaporator is used to exchange heat with the air to condense the moisture in the air, and the condenser is used to heat the air to remove the moisture; a refrigerant circuit, in which the refrigerant passes through the compressor, the condenser, the throttling component and the evaporator in sequence to perform a refrigeration cycle; a controller is used to : Obtain the fan speed according to a preset cycle period, and after each time the fan speed is obtained, determine the time conversion coefficient according to the currently obtained fan speed; wherein, the fan speed is positively correlated with the time conversion coefficient; obtain the total time conversion coefficient according to the currently determined time conversion coefficient and the historically determined time conversion coefficient; determine the current attenuation coefficient according to the current cumulative running time of the fan; obtain the cumulative running converted time of the fan according to the total time conversion coefficient, the current cumulative running time, the current attenuation coefficient and the first preset coefficient; wherein, the first preset coefficient is related to the number of heat exchange tubes; when the cumulative running converted time reaches the preset running time setting value, control the dehumidifier to start the filter cleaning reminder function. The embodiment of the present invention not only takes into account the influence of the fan speed on the dust accumulation rate of the filter, but also takes into account the attenuation effect of the long-term operation of the fan on the fan air volume. At the same time, it also takes into account the heat exchanger design, such as the number of rows of main pipes and other factors, which cause the attenuation effect of the increased resistance on the fan air volume. By introducing the time conversion coefficient, the attenuation coefficient and the first preset coefficient to correct the cumulative running time of the fan, it can more accurately judge whether it is necessary to start the filter cleaning reminder function, thereby improving the accuracy of the dehumidifier filter cleaning reminder control. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic diagram of the appearance and structure of a dehumidifier provided by one embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the internal principle of a dehumidifier provided by one embodiment of the present invention;

[0045] Figure 3 This is a schematic diagram of the internal structure of a dehumidifier provided by one embodiment of the present invention;

[0046] Figure 4 This is a flowchart of a controller for a dehumidifier provided by one embodiment of the present invention;

[0047] Figure 5 is a flowchart of a controller of a dehumidifier provided by another embodiment of the present invention;

[0048] Figure 6 This is a working flow diagram of a controller of a dehumidifier provided by another embodiment of the present invention;

[0049] Figure 7 This is a working flow diagram of a controller of a dehumidifier provided by another embodiment of the present invention;

[0050] Figure 8 This is a working flow diagram of a controller of a dehumidifier provided by another embodiment of the present invention;

[0051] Figure 9 This is a flowchart of an application example of a dehumidifier controller provided by one embodiment of the present invention;

[0052] Figure 10 The present invention is a flowchart of a dehumidifier filter cleaning reminder control method provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this technical field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0054] See also Figure 1 As shown, it is a schematic diagram of the appearance structure of a dehumidifier provided by one embodiment of the present invention. The dehumidifier 100 includes a casing 12, and the casing 12 is provided with an air inlet 121 and an air outlet. The air inlet 121 is provided with a filter for filtering the air. Exemplarily, a filter slot can be provided at the air inlet 121, so that the filter can be detachably inserted into the filter slot and cover the air inlet 121.

[0055] Combine Figure 2 and Figure 3 As shown, Figure 2 This is a schematic diagram of the internal principle of a dehumidifier provided by one embodiment of the present invention. Figure 3This is a schematic diagram of the internal structure of a dehumidifier provided by an embodiment of the present invention. The dehumidifier 100 also includes a heat exchanger, which is arranged in the casing 12. The heat exchanger includes an evaporator 2 and a condenser 1. The evaporator 2 and the condenser 1 both include multiple rows of heat exchange tubes. The evaporator 2 is used to exchange heat with the air to condense moisture in the air, and the condenser 1 is used to heat the air to remove moisture. Furthermore, the dehumidifier 100 also includes a refrigerant circuit. In the refrigerant circuit, the refrigerant passes through the compressor, the condenser 1, the throttling component and the evaporator 2 in sequence for a refrigeration cycle, and the condenser 1 and the evaporator 2 are arranged at intervals to define an air flow channel 3 between the condenser 1 and the evaporator 2. Furthermore, the compressor and the throttling component are also arranged in the casing 12. The evaporator 2 is opposite to the air inlet 121, and the condenser 1 is located on the side of the evaporator 2 away from the air inlet 121.

[0056] like Figure 2 and Figure 3 As shown, the dehumidifier 100 also includes an air volume adjustment plate, a stepper motor 6 and a fan 7, wherein the air volume adjustment plate is rotatably arranged at the inlet of the air flow channel 3 (for example, arranged at the top of the condenser 1 and the evaporator 2), and is used to adjust the air volume ratio of the indoor diverted air flowing through the evaporator 2 and entering from the inlet of the air flow channel 3; the stepper motor 6 is connected to the air volume adjustment plate, and is used to adjust the opening of the air volume adjustment plate. Exemplarily, the stepper motor 6 can be arranged at one end of the length direction of the air volume adjustment plate, and the output shaft of the stepper motor 6 is connected to the air volume adjustment plate. When the stepper motor 6 rotates, the air volume adjustment plate can be driven to rotate; the fan 7 is used to drive air from the air inlet 121 into the casing 12 and discharged from the air outlet.

[0057] like Figure 2 As shown, in an embodiment of the present invention, the dehumidifier 100 further includes a relay 4, and the relay 4 is used to indicate the fan speed of the fan 7. For example, the gear of the fan 7 can be adjusted accordingly by controlling the attraction action of the relay 4, and different gears correspond to different fan speeds. Therefore, by determining the attraction state of the relay 4, the gear of the fan 7 can be determined, thereby obtaining the fan speed at the corresponding gear.

[0058] like Figure 2 As shown, in an embodiment of the present invention, the dehumidifier 100 further includes a timer 5, and the timer 5 is used to time the cumulative running time of the fan 7 after the fan 7 is running.

[0059] like Figure 2As shown, in an embodiment of the present invention, the dehumidifier 100 also includes a controller 8, and the controller 8 is used to control the operation of various components in the dehumidifier 100, so that the various components of the dehumidifier 100 are operated to realize various functions of the dehumidifier 100; further, the controller 8 may include a storage module 81 and a processing module 82, and a communication connection is established between the storage module 81 and the processing module 82, wherein a computer program that can be executed by the processing module 82 is stored in the storage module 81, and when the processing module 82 executes the computer program, the dehumidifier filter cleaning reminder control method described in the embodiment of the present invention is realized.

[0060] It can be understood that the controller 8 can also receive data corresponding to the relay 4 and the timer 5, and based on the received data, use the technical solution provided by the embodiment of the present invention to control the dehumidifier 100 accordingly to solve the technical problems to be solved by the embodiment of the present invention and achieve the technical effects that can be achieved by the embodiment of the present invention.

[0061] As one of the optional embodiments, the controller is used to:

[0062] The fan speed is obtained according to a preset cycle period, and after each time the fan speed is obtained, a duration conversion coefficient is determined according to the currently obtained fan speed; wherein the fan speed and the duration conversion coefficient are positively correlated;

[0063] Obtain the total duration conversion coefficient based on the currently determined duration conversion coefficient and the historically determined duration conversion coefficient;

[0064] determining a current attenuation coefficient according to the current accumulated operating time of the fan;

[0065] Obtaining the cumulative equivalent operation time of the fan according to the total time conversion coefficient, the current cumulative operation time, the current attenuation coefficient, and a first preset coefficient; wherein the first preset coefficient is related to the number of heat exchange tubes;

[0066] When the accumulated running time reaches a preset running time setting value, the dehumidifier is controlled to start a filter cleaning reminder function.

[0067] Combine Figure 4 As shown in FIG. 1 , it is a flowchart of a controller of a dehumidifier provided by an embodiment of the present invention. When the embodiment of the present invention is implemented, the specific working process of the controller 8 is as follows: the fan speed of the fan 7 is obtained according to a preset cycle ( Figure 4As shown in step S11), the cycle period corresponds to a fixed duration. During the operation of the fan 7, the fan speed is obtained once each time the operation time reaches the fixed duration of a cycle period. After each time the fan speed is obtained, the duration conversion coefficient ( Figure 4 Step S12 is shown, wherein there is a positive correlation between the fan speed and the duration conversion coefficient, that is, the greater the fan speed, the greater the corresponding duration conversion coefficient; and according to the currently determined duration conversion coefficient and the duration conversion coefficient determined historically (that is, the duration conversion coefficient corresponding to the historical cycle before the current cycle), the total duration conversion coefficient ( Figure 4 In addition, the current attenuation coefficient ( Figure 4 Step S14 is shown, wherein the attenuation coefficient is related to the cumulative operating time of the fan 7, and the attenuation coefficient can be used to represent the attenuation effect of the long-term operation of the fan on the air volume of the fan 7; then, according to the obtained total time conversion coefficient, the current cumulative operating time of the fan 7, the current attenuation coefficient corresponding to the current cumulative operating time of the fan 7 and the first preset coefficient, the cumulative operating time of the fan 7 ( Figure 4 Step S15 is shown, wherein the first preset coefficient is related to the total number of heat exchange tubes of the heat exchanger, and the first preset coefficient can be used to represent the attenuation effect of the number of rows of the total heat exchanger tubes on the air volume of the fan 7; thereafter, the obtained cumulative equivalent operation time of the fan 7 is compared with the preset operation time setting value to determine whether the cumulative equivalent operation time of the fan 7 reaches the preset operation time setting value ( Figure 4 Step S16 is shown, for example, determining whether the accumulated equivalent running time of the fan 7 is greater than or equal to a preset running time setting value; when it is determined that the accumulated equivalent running time of the fan 7 reaches the preset running time setting value, for example, determining that the accumulated equivalent running time of the fan 7 is greater than or equal to the preset running time setting value, controlling the dehumidifier 100 to start the filter cleaning reminder function ( Figure 4 Step S17 is shown).

[0068] In an embodiment of the present invention, the preset operating time setting value can be the cumulative operating time setting value of the fan when the dehumidifier 100 is operating under rated operating conditions. The operating time setting value can be obtained through experimental testing and stored in the controller 8 in advance (for example, stored in the storage module 81 of the controller 8); wherein, the rated operating condition refers to the operating condition of the dehumidifier testing the rated dehumidification capacity, and the specific parameters corresponding to the rated operating condition can be determined based on the export requirements of the product exporting country, for example, 18.3 / 13.7°C in North America and 27.0 / 21.2°C in China.

[0069] It should be noted that the real-time cumulative duration corresponding to each cycle can be measured by the timer 5. When the fan 7 starts to run, the timer 5 starts timing. Every time the timing time reaches the fixed duration of a cycle, it means that a cycle has been reached. At this time, the fan speed of the fan 7 can be determined by the relay 4. It can be understood that the timing time of the timer 5 is actually equivalent to the cumulative running time of the fan 7.

[0070] For example, the fixed duration of the cycle can be 1 hour. Accordingly, after the fan 7 starts running, the controller 8 determines the fan speed through the relay 4 every 1 hour, and after each time the fan speed is obtained, the controller 8 performs Figure 4 Steps S12 to S17 are shown to determine whether the filter cleaning reminder function needs to be activated.

[0071] It should be noted that Figure 4 The illustrated step S14 is executed after step S13. It is understandable that step S14 may also be executed before step S13 or before step S12. It is only necessary to ensure that step S14 is executed after each acquisition of the fan speed and before step S15.

[0072] It can be understood that there is a positive correlation between the dust accumulation rate on the filter surface and the total air volume, and different fan speeds correspond to different air volumes. The greater the fan speed, the more air passes through the filter, and the more dust is filtered out by the filter. Therefore, the fan speed is an important factor affecting the dust accumulation rate; if the fan speed is lower, the dust accumulation rate is slower; if the fan speed is higher, the dust accumulation rate is faster; the embodiment of the present invention fully considers the influence of the fan speed on the filter dust accumulation rate, and can determine the corresponding time conversion coefficient based on the fan speed obtained corresponding to each cycle, and use the time conversion coefficient to correct the cumulative running time of the fan, thereby achieving a more accurate judgment of the dehumidifier filter cleaning reminder time, and timely reminding the user to clean the filter.

[0073] It should be noted that air conditioners generally have two air ducts, one indoor duct and one outdoor duct. The air in the indoor duct is cooled by the evaporator and then discharged into the indoor environment directly, while the air in the outdoor duct is cooled by the condenser and then discharged into the outdoor environment. Unlike air conditioners, dehumidifiers have only one indoor duct, that is, the indoor air flows through the evaporator and condenser in turn for dehumidification and heating, and then is directly discharged into the indoor environment. In addition, the indoor air duct of a dehumidifier often has to pass through 3 to 5 rows of heat exchangers in turn, while the indoor air duct of an air conditioner generally only has to pass through 1 or 1.5 rows of heat exchangers. It can be seen that the flow resistance of the dehumidifier's air duct is relatively large. It is known that when the fan speed remains unchanged, the greater the air duct resistance, the smaller the overall air volume of the dehumidifier. Therefore, it is necessary to consider the attenuation effect of the number of main pipe rows of the heat exchanger on the fan air volume. The embodiment of the present invention is based on the actual air duct structure characteristics of the dehumidifier and the air conditioner, and takes into account the heat exchanger design, such as the number of main pipe rows, etc., and the attenuation effect of the increased resistance on the fan air volume. A first preset coefficient related to the number of main pipe rows of the heat exchanger is introduced, which can improve the accuracy of the dehumidifier's indirect measurement of the air volume, thereby more accurately predicting the relationship between the fan speed and the dehumidifier filter cleaning reminder time, and improving the accuracy of the dehumidifier filter cleaning reminder time determination.

[0074] In addition, after the fan has been running for a long time, its performance will inevitably decline. The actual speed after decline will be lower than the ideal speed. Correspondingly, the actual air volume will be lower than the ideal air volume obtained by indirect detection. Therefore, if you need to obtain a more accurate fan speed and thus a more accurate air volume, you need to consider the attenuation effect of the long-term operation of the fan on the fan air volume. The embodiment of the present invention is based on the cumulative running time of the fan, takes into account the attenuation effect of the long-term operation of the fan on the fan air volume, and introduces an attenuation coefficient related to the cumulative running time of the fan, which can further improve the accuracy of the dehumidifier's indirect measurement of the air volume, thereby more accurately predicting the relationship between the fan speed and the dehumidifier filter cleaning reminder time, and further improving the accuracy of the dehumidifier filter cleaning reminder time determination.

[0075] Preferably, the value range of the first preset coefficient is 0-1.

[0076] It should be noted that the specific value of the first preset coefficient can be obtained based on actual dehumidifier product design and experimental testing, and stored in the controller 8 in advance (for example, stored in the storage module 81 of the controller 8).

[0077] The dehumidifier provided by the embodiment of the present invention comprises: a casing, an air inlet and an air outlet are provided on the casing, and a filter screen for filtering air is provided at the air inlet; a fan is arranged in the casing, and is used to drive air from the air inlet into the casing and discharged from the air outlet; a heat exchanger is arranged in the casing, and comprises an evaporator and a condenser, and the evaporator and the condenser each comprise multiple rows of heat exchange tubes, the evaporator is used to exchange heat with the air to condense the moisture in the air, and the condenser is used to heat the air to remove the moisture; a refrigerant circuit, in which the refrigerant passes through the compressor, the condenser, the throttling component and the evaporator in sequence to perform a refrigeration cycle; a controller is used to: obtain wind speed according to a preset cycle period The fan speed is obtained, and after each time the fan speed is obtained, the time conversion coefficient is determined according to the currently obtained fan speed; wherein, the fan speed is positively correlated with the time conversion coefficient; the total time conversion coefficient is obtained according to the currently determined time conversion coefficient and the historically determined time conversion coefficient; the current attenuation coefficient is determined according to the current cumulative running time of the fan; the cumulative running equivalent time of the fan is obtained according to the total time conversion coefficient, the current cumulative running time, the current attenuation coefficient and the first preset coefficient; wherein, the first preset coefficient is related to the number of heat exchange tubes; when the cumulative running equivalent time reaches the preset running time setting value, the dehumidifier is controlled to start the filter cleaning reminder function. The embodiment of the present invention not only takes into account the influence of the fan speed on the dust accumulation rate of the filter, but also takes into account the attenuation effect of the long-term operation of the fan on the fan air volume. At the same time, it also takes into account the heat exchanger design, such as the number of rows of main pipes and other factors, which cause the attenuation effect of the increased resistance on the fan air volume. By introducing the time conversion coefficient, the attenuation coefficient and the first preset coefficient to correct the cumulative running time of the fan, it can more accurately judge whether it is necessary to start the filter cleaning reminder function, thereby improving the accuracy of the dehumidifier filter cleaning reminder control.

[0078] As one of the optional embodiments, the controller determines the duration conversion coefficient according to the currently obtained fan speed, specifically including:

[0079] Determine the target speed partition to which the currently obtained fan speed belongs among a plurality of preset speed partitions;

[0080] According to the preset functional relationship between the speed partition and the duration conversion coefficient, the target duration conversion coefficient corresponding to the target speed partition is determined, and the target duration conversion coefficient is used as the duration conversion coefficient corresponding to the currently obtained fan speed; wherein the functional relationship between the speed partition and the duration conversion coefficient is:

[0081] a represents the time conversion coefficient, v represents the fan speed, V1~V p Indicates the preset p speed partitions, k, b1~b i-1 and c1~c p-iBoth are positive numbers, i represents the index of the speed partition, and the larger the value of i, the larger the corresponding fan speed and duration conversion coefficient.

[0082] On the basis of the above embodiments, when the embodiments of the present invention are specifically implemented, when the controller 8 determines the duration conversion coefficient corresponding to the currently obtained fan speed based on the currently obtained fan speed, it can first determine the speed partition to which the currently obtained fan speed belongs in several pre-set speed partitions based on the currently obtained fan speed and use it as the target speed partition; then, based on the functional relationship between the pre-set speed partition and the duration conversion coefficient, determine the duration conversion coefficient corresponding to the target speed partition and use it as the target duration conversion coefficient. Then, the determined target duration conversion coefficient can be used as the duration conversion coefficient corresponding to the currently obtained fan speed.

[0083] It should be noted that the embodiment of the present invention partitions the fan speed in advance and sets several speed partitions corresponding to the fan speed. Different speed partitions correspond to different fan speed ranges, and different speed partitions correspond to different duration conversion coefficients. After each time the fan speed is obtained, it can be judged based on the currently obtained fan speed that the fan speed is within the fan speed range corresponding to which speed partition. According to the duration conversion coefficient corresponding to the speed partition in which the fan speed is located, the duration conversion coefficient corresponding to the fan speed can be determined.

[0084] Furthermore, in the embodiment of the present invention, the controller 8 pre-sets a functional relationship between the speed partition and the duration conversion coefficient, and the expression of the functional relationship is: Among them, a represents the time conversion coefficient, v represents the fan speed; V1~V p It represents the p speed partitions obtained after partitioning the fan speed, and the value range of p is generally 2≤p≤8; k, b1~b i-1 and c1~c p-i are all positive numbers, and k, b1~b i-1 and c1~c p-i The value of can be determined by fitting the experimental results; i represents the index of the speed partition, satisfying 1≤i≤(i+1)≤p, and the larger the value of i, the larger the corresponding fan speed and the larger the corresponding duration conversion coefficient.

[0085] It should be noted that, in V1~V p In the i-th speed partition V i The corresponding fan speed range is smaller than the i+1 speed partition V i+1 The corresponding fan speed range, and the i-th speed partition V i The corresponding duration conversion coefficient k is less than the i+1th speed partition V i+1The corresponding time conversion coefficient k+c1 (the greater the fan speed, the faster the dust accumulates on the filter, so a larger time conversion coefficient should be multiplied to speed up the speed at which the fan's cumulative running converted time reaches the set value).

[0086] For example, the fan speed change value corresponding to each speed partition can be set to be greater than or equal to 10% of the rated fan speed. That is, assuming that the fan speed range corresponding to a speed partition is (V x , V y ), then V y -V x ≥V 额定 ×10%.

[0087] For example, assuming that the i-th speed partition V i is the speed partition where the fan speed under rated operating conditions is located, then the value of k can be set to k=1.

[0088] As one of the optional embodiments, the controller obtains the total duration conversion coefficient according to the currently determined duration conversion coefficient and the historically determined duration conversion coefficient, specifically including:

[0089] According to the formula A=a0+a1+…+a n-1 +a n Calculate the total duration conversion coefficient; where A represents the total duration conversion coefficient, n represents the current number of cycles, and a n Indicates the current determined duration conversion coefficient, a0~a n-1 represents all historically determined duration conversion coefficients, and a0 represents the initial duration conversion coefficient.

[0090] On the basis of the above embodiment, in the specific implementation of the embodiment of the present invention, the controller 8 can obtain the total duration conversion coefficient according to the currently determined duration conversion coefficient and the historically determined duration conversion coefficient by cumulative calculation according to the formula A=a0+a1+…+a n-1 +a n Calculate the corresponding total duration conversion coefficient A; where n represents the current number of cycles, a n Indicates the current determined duration conversion coefficient, a0~a n-1 Indicates the conversion coefficient of all historically determined time periods, and in a0~a n-1 a0 in represents the initial duration conversion coefficient.

[0091] For example, assuming that the current is the first cycle, that is, n=1, then A=a0+a1; assuming that the current is the second cycle, that is, n=2, then A=a0+a1+a2; assuming that the current is the third cycle, that is, n=3, then A=a0+a1+a2+a3; and so on, the total duration conversion coefficient corresponding to each cycle period can be accumulated.

[0092] It is understandable that the controller can record the number of cycles in real time. Since it is at the initial stage of the first cycle, it is equivalent to having entered the first cycle and is currently in the first cycle, the initial value of the number of cycles can be set to 1.

[0093] It can be understood that for the initial duration conversion coefficient a0, since the fan speed is not obtained in the initial stage of the first cycle (the fixed duration corresponding to the first cycle has not been reached), the corresponding duration conversion coefficient is not determined based on the fan speed. Therefore, the initial duration conversion coefficient a0 can be set to 0.

[0094] As an optional embodiment, the controller is further configured to:

[0095] The current cumulative operating time of the fan is calculated based on the fixed duration of the cycle period and the current number of cycles; wherein Y=T×n, Y represents the current cumulative operating time of the fan, T represents the fixed duration of the cycle period, and n represents the current number of cycles.

[0096] Combine Figure 5 As shown in FIG. 1 , it is a working flow diagram of a controller of a dehumidifier provided by another embodiment of the present invention. On the basis of the above embodiment, when the embodiment of the present invention is implemented, the controller 8 executes Figure 5 After step S13 shown in FIG. Figure 5 Before step S14 shown in FIG. 1 , the current cumulative running time of the fan 7 is calculated based on the fixed time length corresponding to the cycle period and the current number of cycles ( Figure 5 Step S18 is shown).

[0097] The current accumulated running time Y of the fan 7 can be calculated according to the formula Y=T×n, where T represents the fixed time corresponding to the cycle period, and n represents the current number of cycles.

[0098] It can be understood that since the number of cycles n is known, it is equivalent to knowing how many cycles the fan 7 has experienced after starting to run (that is, it has experienced n cycles), and the fixed time length T corresponding to each cycle is also known. Therefore, the current cumulative running time Y of the fan 7 is obtained by calculating T×n.

[0099] It should be noted that, in addition to calculating the current cumulative operating time Y of the fan 7 according to the formula Y=T×n, the current cumulative operating time Y of the fan 7 can also be directly obtained according to the current timing time of the timer 5.

[0100] In addition, in combination with the above embodiments, it can be seen that since the timer 5 can be used to time the cumulative running time of the fan 7, and can also be used to time the real-time cumulative time corresponding to each cycle, in order to distinguish, an additional timer can be set, that is, the timer 5 is used specifically to time the real-time cumulative time corresponding to each cycle, and the additional timer is used specifically to time the cumulative running time of the fan 7. At this time, the current cumulative running time Y of the fan 7 can also be directly obtained according to the current timing time of the additional timer.

[0101] As one of the optional embodiments, the controller determines the current attenuation coefficient according to the current accumulated running time of the fan, specifically including:

[0102] Determining a target duration partition to which the current accumulated operating duration of the wind turbine belongs among a plurality of preset duration partitions;

[0103] According to the preset functional relationship between the duration partition and the attenuation coefficient, the target attenuation coefficient corresponding to the target duration partition is determined, and the target attenuation coefficient is used as the current attenuation coefficient corresponding to the current accumulated running time; wherein the functional relationship between the duration partition and the attenuation coefficient is:

[0104] d fan represents the attenuation coefficient, t represents the cumulative running time of the fan, T1~T q Represents the preset q time partitions, d and e1~e q-1 They are all positive numbers, j represents the index of the duration partition, and the larger the value of j is, the longer the corresponding cumulative running time of the fan is and the smaller the corresponding attenuation coefficient is.

[0105] On the basis of the above embodiments, when the embodiments of the present invention are specifically implemented, when the controller 8 determines the current attenuation coefficient corresponding to the current accumulated running time of the fan 7 based on the current accumulated running time of the fan 7, it can first determine the time partition to which the current accumulated running time of the fan 7 belongs in several pre-set time partitions based on the current accumulated running time of the fan 7 and use it as the target time partition; then, based on the functional relationship between the pre-set time partition and the attenuation coefficient, determine the attenuation coefficient corresponding to the target time partition and use it as the target attenuation coefficient. Then, the determined target attenuation coefficient can be used as the current attenuation coefficient corresponding to the current accumulated running time of the fan 7.

[0106] It should be noted that the embodiment of the present invention partitions the accumulated running time of the fan in advance, and sets several time partitions corresponding to the accumulated running time of the fan. Different time partitions correspond to different accumulated running time ranges of the fan, and different time partitions correspond to different attenuation coefficients. After each time the current accumulated running time of the fan 7 is obtained, it can be judged according to the current accumulated running time of the fan 7 that the current accumulated running time is within the range of the fan accumulated running time corresponding to which time partition. According to the attenuation coefficient corresponding to the time partition in which the current accumulated running time is located, the current attenuation coefficient corresponding to the current accumulated running time can be determined.

[0107] Furthermore, in an embodiment of the present invention, the controller 8 pre-sets a functional relationship between the duration partition and the attenuation coefficient, and the expression of the functional relationship is: Among them, d fan represents the attenuation coefficient, t represents the cumulative running time of the fan; T1~T q It represents the q time partitions obtained after partitioning the cumulative running time of the fan, and the value range of q is generally 2≤q≤8; d and e1~e q-1 are all positive numbers, and d and e1~e q-1 The value of can be determined by fitting the experimental results (for example, d=1); j represents the index of the time partition, satisfying 1≤j≤(j+1)≤q, and the larger the value of j, the longer the corresponding cumulative running time of the fan and the smaller the corresponding attenuation coefficient.

[0108] It should be noted that, in T1~T q In the j-th time partition T j The corresponding cumulative operating time range of the fan is less than the j+1th time partition T j+1 The corresponding cumulative operating time range of the fan, and the j-th time partition T j The corresponding attenuation coefficient is greater than the j+1th time partition T j+1 The corresponding attenuation coefficient.

[0109] It is understandable that as the cumulative running time of the fan increases, the fan performance will deteriorate more and more, the actual speed of the fan will gradually decrease, and the dust accumulation speed at this time will slow down. Therefore, according to the actual situation, it is necessary to multiply by a smaller attenuation coefficient to delay the time for the cumulative running equivalent time of the fan to reach the set value; among them, the cumulative running time of the fan in the j-th time partition is less than the cumulative running time of the fan in the j+1-th time partition, then, the fan speed corresponding to the j-th time partition is greater than the fan speed corresponding to the j+1-th time partition, then, the dust accumulation speed corresponding to the j-th time partition is greater than the dust accumulation speed corresponding to the j+1-th time partition, then, the j-th time partition should reach the running time setting value as soon as possible than the j+1-th time partition, therefore, the attenuation coefficient corresponding to the j-th time partition should be greater than the attenuation coefficient corresponding to the j+1-th time partition.

[0110] For example, the cumulative running time change value of the fan corresponding to each time partition can be set to be greater than or equal to a fixed value, for example, the fixed value is 1000 hours, that is, assuming that the cumulative running time range of the fan corresponding to a certain time partition is (T x , T y ), then T y -T x ≥1000h.

[0111] As one of the optional embodiments, the controller obtains the cumulative equivalent operation time of the fan according to the total time conversion coefficient, the current cumulative operation time, the current attenuation coefficient and the first preset coefficient, specifically including:

[0112] According to the formula Y1=A×Y×d exchanger ×d fan Calculate the cumulative equivalent running time of the fan; where Y1 represents the cumulative equivalent running time, A represents the total time conversion coefficient, Y represents the current cumulative running time, d exchanger represents the first preset coefficient, d fan Indicates the current attenuation coefficient.

[0113] On the basis of the above embodiment, in the specific implementation of the embodiment of the present invention, the controller 8 calculates the current attenuation coefficient d corresponding to the total time conversion coefficient A, the current cumulative running time Y of the fan 7, and the current cumulative running time Y of the fan 7 according to the total time conversion coefficient A, the current cumulative running time Y of the fan 7 fan and the first preset coefficient d exchanger When obtaining the cumulative equivalent running time Y1 of the fan 7, the formula Y1=A×Y×d exchanger ×d fan The cumulative equivalent operation time Y1 of the fan 7 is obtained by calculation.

[0114] As an optional embodiment, the controller is further configured to:

[0115] After determining that the filter cleaning is completed, the dehumidifier is controlled to start the reset function, so that the number of cycles is reset and restarted, and the timer is reset and restarted; wherein, the timer is used to indicate the real-time cumulative duration of each cycle.

[0116] Combine Figure 6 As shown in FIG. 1 , it is a working flow diagram of a controller of a dehumidifier provided by another embodiment of the present invention. On the basis of the above embodiment, when the embodiment of the present invention is implemented, the controller 8 executes Figure 6 After step S17 shown, it is also used to control the dehumidifier 100 to start the reset function after determining that the filter cleaning is completed, so that the number of cycles is reset (i.e., reset to the initial value 1) and restart counting, and the timer 5 is reset (i.e., reset to the initial value 0) and restart timing ( Figure 6 Step S19 is shown).

[0117] Among them, as described in the above embodiment, the timer 5 can start timing from the initial value 0 when the fan 7 starts to run, and its timing time represents the current cumulative running time of the fan 7, and can also be used to indicate the real-time cumulative time of each cycle.

[0118] It should be noted that when the user presses the "filter cleaning" button set on the dehumidifier again, it is assumed that the user has completed the filter cleaning. Correspondingly, when the controller detects that the "filter cleaning" button is pressed, it can determine that the filter cleaning is completed.

[0119] As an optional embodiment, the controller is further configured to:

[0120] When the accumulated running converted time does not reach the preset running time setting value, the current number of cycles is updated by adding 1, and the fan speed corresponding to the next cycle period is waited for to be obtained.

[0121] Combine Figure 7 As shown in FIG. 1 , it is a working flow diagram of a controller of a dehumidifier provided by another embodiment of the present invention. On the basis of the above embodiment, when the embodiment of the present invention is implemented, the controller 8 executes Figure 7 After determining whether the accumulated equivalent running time of the fan 7 has reached the preset running time setting value, step S16 shown in the figure is further used to update the current number of cycles by adding 1 when determining that the accumulated equivalent running time of the fan 7 has not reached the preset running time setting value, for example, when determining that the accumulated equivalent running time of the fan 7 is less than the preset running time setting value. Figure 7Step S20 is shown), and the fan speed corresponding to the next cycle is obtained (ie, it is equivalent to returning Figure 7 Step S11 is shown).

[0122] As an optional embodiment, the controller is further configured to:

[0123] Determining whether the current accumulated operating time of the fan reaches a preset operating time limit;

[0124] When the current accumulated operating time reaches the operating time limit, a fan maintenance reminder is issued.

[0125] Combine Figure 8 As shown in FIG. 1 , it is a working flow diagram of a controller of a dehumidifier provided by another embodiment of the present invention. On the basis of the above embodiment, when the embodiment of the present invention is implemented, the controller 8 executes Figure 8 After step S17, it is further used to determine whether the current cumulative running time of the fan 7 reaches the preset running time limit ( Figure 8 Step S21 is shown, for example, determining whether the current accumulated running time of the fan 7 is greater than or equal to the preset running time limit; if it is determined that the current accumulated running time of the fan 7 has reached the preset running time limit, for example, determining that the current accumulated running time of the fan 7 is greater than or equal to the preset running time limit, then a fan maintenance reminder is performed ( Figure 8 Step S22 is shown to remind the user to repair the fan.

[0126] It can be understood that if it is determined that the current cumulative operating time of the fan 7 does not reach the preset operating time limit, for example, it is determined that the current cumulative operating time of the fan 7 is less than the preset operating time limit, then the step of obtaining the fan speed can be returned to wait for obtaining the fan speed corresponding to the next cycle.

[0127] It should be noted that, in combination with the above embodiments, if the embodiment of the present invention uses the timer 5 specifically to measure the real-time cumulative duration corresponding to each cycle, and an additional timer is set specifically to measure the cumulative running time of the fan 7, then after the maintenance of the fan is completed, the additional timer needs to be reset and the additional timer needs to be controlled to restart timing.

[0128] For example, see Figure 9 FIG. 1 is a flowchart of an application example of a dehumidifier controller provided by an embodiment of the present invention. Combining all the above embodiments, the working process of the controller is as follows:

[0129] Step S31: Obtain the cumulative running time setting value Y of the fan of the dehumidifier under rated working conditions th ;

[0130] Step S32: Obtain a first preset coefficient d related to the total resistance of the heat exchanger of the dehumidifier. exchanger ;

[0131] Step S33, reset timer 1 (equivalent to the timer 5 in the above embodiment) and the number of cycles, assuming that the initial value of timer 1 is t1 = 0, the initial value of the number of cycles is n = 1, the initial value of the time conversion coefficient is a0 = 0, and the cycle period is T = 1h;

[0132] Step S34: set timer 2 (equivalent to the additional timer in the above embodiment), and set the initial value t2 of timer 2 to 0;

[0133] Step S35: Obtain the fan speed corresponding to the nth cycle, and determine the duration conversion coefficient a corresponding to the fan speed. n ;

[0134] Step S36: Based on the currently determined duration conversion coefficient and the historically determined duration conversion coefficient, the total duration conversion coefficient A=a0+a1+…+a n-1 +a n ;

[0135] Step S37: Determine the current attenuation coefficient d according to the current timing time of timer 2 (which is equivalent to the current cumulative running time of the fan). fan ;

[0136] Step S38: According to the total time conversion coefficient A, the current cumulative running time of the fan (T×n or the current timing time of timer 2), the current attenuation coefficient d fan and the first preset coefficient d exchanger , calculate the cumulative equivalent running time of the fan Y1=A×T×n×d exchanger ×d fan ;

[0137] Step S39: Determine whether the cumulative running time Y1 of the fan is less than the set value Y of the cumulative running time. th ; If not, execute step S40; If yes, execute step S42;

[0138] Step S40: Control the dehumidifier to start the filter cleaning reminder function;

[0139] Step S41: After the user cleans the filter, the reset function is activated to reset the number of cycles and restart counting, so that the timer 1 is reset and restarts timing;

[0140] Step S42: The current number of loops is updated by adding 1, i.e., the number of loops n=n+1, and the process returns to step S35;

[0141] Step S43: Determine whether the current timing time t2 of timer 2 (equivalent to the current cumulative running time of the fan) is greater than or equal to the running time limit Y. max ; If not, return to step S35; if so, execute step S44;

[0142] Step S44: Remind the user to repair the fan, and after the repair of the fan is completed, reset the timer 2 and restart the timing.

[0143] The present invention also provides a dehumidifier filter cleaning reminder control method, see Figure 10 FIG. 1 is a flow chart of a dehumidifier filter cleaning reminder control method provided by one embodiment of the present invention. The method is applicable to the dehumidifier described in any of the above embodiments. The method is executed by the controller and includes steps S101 to S105:

[0144] Step S101: Obtain the fan speed according to a preset cycle, and after each time the fan speed is obtained, determine the duration conversion coefficient according to the currently obtained fan speed; wherein the fan speed and the duration conversion coefficient are positively correlated;

[0145] Step S102: Obtain a total duration conversion coefficient based on the currently determined duration conversion coefficient and the historically determined duration conversion coefficient;

[0146] Step S103: determining a current attenuation coefficient according to the current accumulated operating time of the wind turbine;

[0147] Step S104: Obtain the cumulative equivalent operation time of the fan according to the total time conversion coefficient, the current cumulative operation time, the current attenuation coefficient, and a first preset coefficient; wherein the first preset coefficient is related to the number of heat exchange tubes;

[0148] Step S105: When the accumulated running time reaches a preset running time setting value, the dehumidifier is controlled to start a filter cleaning reminder function.

[0149] In some embodiments, determining the duration conversion coefficient based on the currently obtained fan speed specifically includes:

[0150] Determine the target speed partition to which the currently obtained fan speed belongs among a plurality of preset speed partitions;

[0151] According to the preset functional relationship between the speed partition and the duration conversion coefficient, the target duration conversion coefficient corresponding to the target speed partition is determined, and the target duration conversion coefficient is used as the duration conversion coefficient corresponding to the currently obtained fan speed; wherein the functional relationship between the speed partition and the duration conversion coefficient is:

[0152] a represents the time conversion coefficient, v represents the fan speed, V1~V p Indicates the preset p speed partitions, k, b1~b i-1 and c1~c p-i Both are positive numbers, i represents the index of the speed partition, and the larger the value of i, the larger the corresponding fan speed and duration conversion coefficient.

[0153] In some embodiments, obtaining the total duration conversion coefficient based on the currently determined duration conversion coefficient and the historically determined duration conversion coefficient specifically includes:

[0154] According to the formula A=a0+a1+…+a n-1 +a n Calculate the total duration conversion coefficient; where A represents the total duration conversion coefficient, n represents the current number of cycles, and a n Indicates the current determined duration conversion coefficient, a0~a n-1 represents all historically determined duration conversion coefficients, and a0 represents the initial duration conversion coefficient.

[0155] In some embodiments, the method further comprises:

[0156] The current cumulative operating time of the fan is calculated based on the fixed duration of the cycle period and the current number of cycles; wherein Y=T×n, Y represents the current cumulative operating time of the fan, T represents the fixed duration of the cycle period, and n represents the current number of cycles.

[0157] In some embodiments, determining the current attenuation coefficient according to the current accumulated operating time of the wind turbine specifically includes:

[0158] Determining a target duration partition to which the current accumulated operating duration of the wind turbine belongs among a plurality of preset duration partitions;

[0159] According to the preset functional relationship between the duration partition and the attenuation coefficient, the target attenuation coefficient corresponding to the target duration partition is determined, and the target attenuation coefficient is used as the current attenuation coefficient corresponding to the current accumulated running time; wherein the functional relationship between the duration partition and the attenuation coefficient is:

[0160] d fanrepresents the attenuation coefficient, t represents the cumulative running time of the fan, T1~T q Represents the preset q time partitions, d and e1~e q-1 They are all positive numbers, j represents the index of the duration partition, and the larger the value of j is, the longer the corresponding cumulative running time of the fan is and the smaller the corresponding attenuation coefficient is.

[0161] In some embodiments, obtaining the cumulative converted operation time of the wind turbine according to the total time conversion coefficient, the current cumulative operation time, the current attenuation coefficient, and the first preset coefficient specifically includes:

[0162] According to the formula Y1=A×Y×d exchanger ×d fan Calculate the cumulative equivalent running time of the fan; where Y1 represents the cumulative equivalent running time, A represents the total time conversion coefficient, Y represents the current cumulative running time, d exchanger represents the first preset coefficient, d fan Indicates the current attenuation coefficient.

[0163] In some embodiments, the method further comprises:

[0164] After determining that the filter cleaning is completed, the dehumidifier is controlled to start the reset function, so that the number of cycles is reset and restarted, and the timer is reset and restarted; wherein, the timer is used to indicate the real-time cumulative duration of each cycle.

[0165] In some embodiments, the method further comprises:

[0166] When the accumulated running converted time does not reach the preset running time setting value, the current number of cycles is updated by adding 1, and the fan speed corresponding to the next cycle period is waited for to be obtained.

[0167] In some embodiments, the method further comprises:

[0168] Determining whether the current accumulated operating time of the fan reaches a preset operating time limit;

[0169] When the current accumulated operating time reaches the operating time limit, a fan maintenance reminder is issued.

[0170] It should be noted that the dehumidifier filter cleaning reminder control method provided in an embodiment of the present invention can realize all the working processes of the dehumidifier described in any of the above embodiments. The specific implementation plan and the technical effects achieved corresponding to the dehumidifier filter cleaning reminder control method are respectively the same as the specific implementation plan and the technical effects achieved of the dehumidifier described in the above embodiments, and will not be repeated here.

[0171] In summary, the embodiments of the present invention provide a dehumidifier and a dehumidifier filter cleaning reminder control method, wherein the dehumidifier includes: a casing, an air inlet and an air outlet are provided on the casing, and a filter for filtering air is provided at the air inlet; a fan is provided in the casing, and is used to drive air from the air inlet into the casing and discharged from the air outlet; a heat exchanger is provided in the casing, and includes an evaporator and a condenser, and the evaporator and the condenser both include multiple rows of heat exchange tubes, the evaporator is used to exchange heat with the air to condense moisture in the air, and the condenser is used to heat the air to remove moisture; a refrigerant circuit, in which the refrigerant passes through the compressor, the condenser, the throttling component and the evaporator in sequence to perform a refrigeration cycle; a controller is used to: The fan speed is obtained according to a preset cycle period, and after each time the fan speed is obtained, the time conversion coefficient is determined according to the currently obtained fan speed; wherein, the fan speed is positively correlated with the time conversion coefficient; the total time conversion coefficient is obtained according to the currently determined time conversion coefficient and the historically determined time conversion coefficient; the current attenuation coefficient is determined according to the current cumulative running time of the fan; the cumulative running converted time of the fan is obtained according to the total time conversion coefficient, the current cumulative running time, the current attenuation coefficient and the first preset coefficient; wherein the first preset coefficient is related to the number of heat exchange tubes; when the cumulative running converted time reaches the preset running time setting value, the dehumidifier is controlled to start the filter cleaning reminder function. The embodiment of the present invention not only takes into account the influence of the fan speed on the dust accumulation rate of the filter, but also takes into account the attenuation effect of the long-term operation of the fan on the fan air volume. At the same time, it also takes into account the heat exchanger design, such as the number of rows of main pipes and other factors, which cause the attenuation effect of the increased resistance on the fan air volume. By introducing the time conversion coefficient, the attenuation coefficient and the first preset coefficient to correct the cumulative running time of the fan, it can more accurately judge whether it is necessary to start the filter cleaning reminder function, thereby improving the accuracy of the dehumidifier filter cleaning reminder control.

[0172] The above are only some embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A dehumidifier, characterized in that: include: A housing, wherein the housing is provided with an air inlet and an air outlet, and the air inlet is provided with a filter for filtering air; A fan is provided in the housing, and is used to drive air into the housing from the air inlet and out from the air outlet; a heat exchanger, disposed in the housing, comprising an evaporator and a condenser, wherein the evaporator and the condenser each comprise a plurality of rows of heat exchange tubes, the evaporator being used to exchange heat with air to condense moisture in the air, and the condenser being used to heat the air from which moisture has been removed; a refrigerant circuit, in which the refrigerant sequentially passes through a compressor, the condenser, a throttling component, and the evaporator to perform a refrigeration cycle; Controller for: The fan speed is obtained according to a preset cycle period, and after each time the fan speed is obtained, a duration conversion coefficient is determined according to the currently obtained fan speed; wherein the fan speed and the duration conversion coefficient are positively correlated; Obtain the total duration conversion coefficient based on the currently determined duration conversion coefficient and the historically determined duration conversion coefficient; determining a current attenuation coefficient according to the current accumulated operating time of the fan; Obtaining the cumulative equivalent operation time of the fan according to the total time conversion coefficient, the current cumulative operation time, the current attenuation coefficient, and a first preset coefficient; wherein the first preset coefficient is related to the number of heat exchange tubes; When the accumulated running time reaches a preset running time setting value, the dehumidifier is controlled to start a filter cleaning reminder function.

2. The dehumidifier according to claim 1, characterized in that The controller determines the duration conversion coefficient according to the currently obtained fan speed, specifically including: Determine the target speed partition to which the currently obtained fan speed belongs among a plurality of preset speed partitions; According to the preset functional relationship between the speed partition and the duration conversion coefficient, the target duration conversion coefficient corresponding to the target speed partition is determined, and the target duration conversion coefficient is used as the duration conversion coefficient corresponding to the currently obtained fan speed; wherein the functional relationship between the speed partition and the duration conversion coefficient is: a represents the time conversion coefficient, v represents the fan speed, V1~V p Indicates the preset p speed partitions, k, b1~b i-1 and c1~c p-i Both are positive numbers, i represents the index of the speed partition, and the larger the value of i, the larger the corresponding fan speed and duration conversion coefficient.

3. The dehumidifier according to claim 1, wherein The controller obtains the total duration conversion coefficient according to the currently determined duration conversion coefficient and the historically determined duration conversion coefficient, specifically including: According to the formula A=a0+a1+…+a n-1 +a n Calculate the total duration conversion coefficient; where A represents the total duration conversion coefficient, n represents the current number of cycles, and a n Indicates the current determined duration conversion coefficient, a0~a n-1 represents all historically determined duration conversion coefficients, and a0 represents the initial duration conversion coefficient.

4. The dehumidifier according to claim 1, wherein The controller is also used for: The current cumulative operating time of the fan is calculated based on the fixed duration of the cycle period and the current number of cycles; wherein Y=T×n, Y represents the current cumulative operating time of the fan, T represents the fixed duration of the cycle period, and n represents the current number of cycles.

5. The dehumidifier according to claim 1, wherein: The controller determines the current attenuation coefficient according to the current accumulated running time of the fan, specifically including: Determining a target duration partition to which the current accumulated operating duration of the wind turbine belongs among a plurality of preset duration partitions; According to the preset functional relationship between the duration partition and the attenuation coefficient, the target attenuation coefficient corresponding to the target duration partition is determined, and the target attenuation coefficient is used as the current attenuation coefficient corresponding to the current accumulated running time; wherein the functional relationship between the duration partition and the attenuation coefficient is: d fan represents the attenuation coefficient, t represents the cumulative running time of the fan, T1~T q Represents the preset q time partitions, d and e1~e q-1 They are all positive numbers, j represents the index of the duration partition, and the larger the value of j is, the longer the corresponding cumulative running time of the fan is and the smaller the corresponding attenuation coefficient is.

6. The dehumidifier according to claim 1, wherein: The controller obtains the cumulative converted operation time of the fan according to the total time conversion coefficient, the current cumulative operation time, the current attenuation coefficient and the first preset coefficient, specifically including: According to the formula Y1=A×Y×d exchanger ×d fan Calculate the cumulative equivalent running time of the fan; where Y1 represents the cumulative equivalent running time, A represents the total time conversion coefficient, Y represents the current cumulative running time, d exchanger represents the first preset coefficient, d fan Indicates the current attenuation coefficient.

7. The dehumidifier according to claim 1, wherein: The controller is also used to: After determining that the filter cleaning is completed, the dehumidifier is controlled to start the reset function, so that the number of cycles is reset and restarted, and the timer is reset and restarted; wherein, the timer is used to indicate the real-time cumulative duration of each cycle.

8. The dehumidifier according to claim 1, wherein: The controller is also used to: When the accumulated running converted time does not reach the preset running time setting value, the current number of cycles is updated by adding 1, and the fan speed corresponding to the next cycle period is waited for to be obtained.

9. The dehumidifier according to any one of claims 1 to 8, characterized in that: The controller is also used to: Determining whether the current accumulated operating time of the fan reaches a preset operating time limit; When the current accumulated operating time reaches the operating time limit, a fan maintenance reminder is issued.

10. A dehumidifier filter cleaning reminder control method, characterized in that: Applicable to the dehumidifier according to any one of claims 1 to 9, the method is executed by the controller, and the method includes: The fan speed is obtained according to a preset cycle period, and after each time the fan speed is obtained, a duration conversion coefficient is determined according to the currently obtained fan speed; wherein the fan speed and the duration conversion coefficient are positively correlated; Obtain the total duration conversion coefficient based on the currently determined duration conversion coefficient and the historically determined duration conversion coefficient; determining a current attenuation coefficient according to the current accumulated operating time of the fan; Obtaining the cumulative equivalent operation time of the fan according to the total time conversion coefficient, the current cumulative operation time, the current attenuation coefficient, and a first preset coefficient; wherein the first preset coefficient is related to the number of heat exchange tubes; When the accumulated running time reaches a preset running time setting value, the dehumidifier is controlled to start a filter cleaning reminder function.

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