Anti-corrosion control method and device and air conditioner

Abstract

The invention discloses an anti-corrosion control method and device and an air conditioner. The anti-corrosion control method comprises the steps that humidity detection is conducted on the two ends of an evaporator, and a relative humidity value is recorded; whether any one of the relative humidity values is larger than a preset threshold value or not is judged, if yes, a first heating mode and a heating element at the corresponding end are started at the same time, and if not, only a second heating mode is started; quitting the first heating mode when the heating quitting condition is met in the first heating mode; quitting the second heating mode when the heating quitting condition is met in the second heating mode; and when the heating quit condition is met, the heating element at the corresponding end is closed. The first heating mode, the second heating mode and the heating element can be correspondingly started under different conditions, and the current mode can be quitted after the set quit condition is met. Therefore, the evaporator can accurately control the heating process, comprehensively dehumidify and effectively discharge water on the surface of the copper pipe, so that the service life of the air conditioner is prolonged, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an anti-corrosion control method, device and air conditioner. Background Art

[0002] During the use of air conditioners, the copper tubes of the evaporator will gradually corrode, especially in high humidity environments such as islands, ditches, and rivers. The corrosion rate will accelerate and even cause the copper tubes to rupture, seriously affecting the service life of the air conditioner. In the existing air conditioner control method, after each cooling operation, the condensed water on the copper tube is allowed to evaporate naturally, and there is a lack of effective control methods to accelerate the evaporation of water. This makes the copper tube leak frequently when the air conditioner is used for a long time in a high humidity environment.

[0003] In response to the above problems, patent number CN116399026A proposes a method, system, equipment and medium for corrosion prevention of aluminum evaporator of air conditioner. The method detects the humidity near the evaporator through a humidity sensor, and compares it with the preset humidity value to control the opening or closing of the heating element at the end of the shunt pipe, so as to achieve the purpose of corrosion prevention. However, this method has defects: First, the heating control cannot be accurately adjusted: in the cooling mode, when the humidity is higher than the preset value, the heating element will turn on, and it will take a period of time to reduce the humidity to below the preset value. Second, the dehumidification is not thorough: this method mainly focuses on the evaporation of water on one side of the branch pipe, while the water on one side of the angle frame is more difficult to remove due to the formation of a water film with the U-shaped tube. The heating function of the air conditioner alone cannot completely evaporate the water on one side of the angle frame, resulting in the water on one side of the angle frame remaining on the surface of the copper tube for a long time after each cooling operation, and it needs to be naturally dried, which will accelerate the corrosion of the copper tube in the long run.

[0004] Therefore, the existing technology has the defects of inaccurate heating control and incomplete dehumidification in preventing corrosion of the copper tube of the air conditioner evaporator, and a new solution is urgently needed. Summary of the invention

[0005] The embodiments of the present invention provide an anti-corrosion control method, device and air conditioner, aiming to solve the problems of inaccurate heating control and incomplete dehumidification in the anti-corrosion method of evaporator copper tube in the prior art.

[0006] In a first aspect, an embodiment of the present invention provides an anti-corrosion control method for performing anti-corrosion control on a copper tube of an evaporator in an air conditioner, wherein heating elements are provided at both ends of the evaporator, and the anti-corrosion control method comprises:

[0007] After the cooling mode is started, the humidity at both ends of the evaporator is detected, and the relative humidity values ​​at both ends of the evaporator are recorded when the cooling mode is stopped;

[0008] Determine whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold value, if so, start the first heating mode and the heating element at the corresponding end at the same time, if not, start only the second heating mode;

[0009] In the first heating mode, when it is detected that the relative humidity value at both ends of the evaporator or the running time of the first heating mode meets the heating exit condition, the first heating mode is exited; in the second heating mode, when it is detected that the running time of the second heating mode meets the heating exit condition, the second heating mode is exited;

[0010] When it is detected that the relative humidity value at any end of the evaporator or the operating time of the heating element at the corresponding end meets the heating exit condition, the heating element at the corresponding end is turned off.

[0011] In a second aspect, an embodiment of the present invention provides an anti-corrosion control device for performing anti-corrosion control on a copper tube of an evaporator in an air conditioner, wherein both ends of the evaporator are provided with heating elements, comprising:

[0012] A humidity acquisition unit, used to detect the humidity at both ends of the evaporator after the cooling mode is started, and record the relative humidity values ​​at both ends of the evaporator when the cooling mode is stopped;

[0013] A heating start unit, used to determine whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold value, and if so, start the first heating mode and the heating element at the corresponding end at the same time, and if not, start only the second heating mode;

[0014] A first exit unit is used to exit the first heating mode when it is detected that the relative humidity values ​​at both ends of the evaporator or the running time of the first heating mode meets the heating exit condition in the first heating mode; and to exit the second heating mode when it is detected that the running time of the second heating mode meets the heating exit condition in the second heating mode;

[0015] The second exit unit is used to turn off the heating element at any end of the evaporator when it is detected that the relative humidity value at any end of the evaporator or the operating time of the heating element at the corresponding end meets the heating exit condition.

[0016] In a third aspect, an embodiment of the present invention provides an air conditioner, comprising the anti-corrosion control device according to the second aspect as described above.

[0017] An embodiment of the present invention provides an anti-corrosion control method for performing anti-corrosion control on a copper tube of an evaporator in an air conditioner, wherein heating elements are provided at both ends of the evaporator, and the anti-corrosion control method comprises: performing humidity detection on both ends of the evaporator after the cooling mode is started, and recording the relative humidity values ​​at both ends of the evaporator when the cooling mode is stopped; judging whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold value, and if so, simultaneously starting a first heating mode and the heating elements at the corresponding ends, and if not, only starting a second heating mode; in the first heating mode, when it is detected that the relative humidity values ​​at both ends of the evaporator or the running time of the first heating mode meet a heating exit condition, exiting the first heating mode; in the second heating mode, when it is detected that the running time of the second heating mode meets the heating exit condition, exiting the second heating mode; when it is detected that the relative humidity value at either end of the evaporator or the running time of the heating element at the corresponding end meets the heating exit condition, turning off the heating element at the corresponding end. The present invention compares the relative humidity value with a preset threshold value, and correspondingly turns on the first heating mode, the second heating mode and the heating element under different circumstances. When the set exit condition is met, the corresponding first heating mode, the second heating mode and the heating element can be exited and turned off. In this way, the evaporator can accurately control the heating process, fully dehumidify, and effectively discharge the moisture on the surface of the copper tube, thereby extending the service life of the air conditioner and improving the user experience.

[0018] The embodiment of the present invention also provides an anti-corrosion control device and an air conditioner, which also have the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0020] Figure 1 A schematic flow chart of an anti-corrosion control method provided by an embodiment of the present invention;

[0021] Figure 2 A schematic block diagram of an anti-corrosion control device provided in an embodiment of the present invention;

[0022] Figure 3 A schematic structural diagram of an air conditioner provided in an embodiment of the present invention.

[0023] Description of the symbols in the figure:

[0024] 10. Air conditioner body; 20. Tripod; 30. Liquid distribution branch pipe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0027] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0028] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0029] Combination Figure 1 As shown, an embodiment of the present invention provides an anti-corrosion control method for performing anti-corrosion control on a copper tube of an evaporator in an air conditioner, wherein heating elements are provided at both ends of the evaporator, and the anti-corrosion control method comprises steps S101-S104:

[0030] S101, performing humidity detection on both ends of the evaporator after the cooling mode is started, and recording the relative humidity values ​​at both ends of the evaporator when the cooling mode is stopped;

[0031] S102, determining whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold value, if so, simultaneously starting the first heating mode and the heating element at the corresponding end, if not, only starting the second heating mode;

[0032] S103, in the first heating mode, when it is detected that the relative humidity values ​​at both ends of the evaporator or the running time of the first heating mode meets the heating exit condition, exit the first heating mode; in the second heating mode, when it is detected that the running time of the second heating mode meets the heating exit condition, exit the second heating mode;

[0033] S104: When it is detected that the relative humidity value at any end of the evaporator or the operating time of the heating element at the corresponding end meets the heating exit condition, the heating element at the corresponding end is turned off.

[0034] In step S101, after the air conditioner enters the cooling mode, the controller starts the humidity sensors at both ends of the evaporator to obtain the relative humidity values ​​at both ends of the evaporator, and records the relative humidity values ​​at regular intervals or intervals during the operation of the cooling mode. When the cooling mode stops, the controller obtains and records the final relative humidity value before the cooling stops. At this time, the controller uses the final relative humidity value at both ends of the evaporator.

[0035] In one embodiment, the step S101 includes:

[0036] After the cooling mode is started, humidity detection is performed on both ends of the evaporator, and the relative humidity values ​​at both ends of the evaporator are recorded once every predetermined time period;

[0037] When it is detected that the cooling mode stops, the most recently recorded relative humidity values ​​at both ends of the evaporator are obtained and saved;

[0038] Calculate the stored relative humidity values ​​across the evaporator.

[0039] In this embodiment, after entering the cooling mode, the controller activates the first humidity sensor and the second humidity sensor connected to the two ends of the evaporator, and monitors the relative humidity values ​​at both ends of the evaporator. The controller collects humidity at a preset time interval. For example, the controller can obtain the relative humidity values ​​detected by the first humidity sensor and the second humidity sensor every 5 minutes, and record these data in the storage unit of the controller. During the entire process of the cooling mode operation, the controller continuously obtains the humidity changes at both ends of the evaporator through this timed detection method, thereby forming a dynamic humidity monitoring data chain to ensure a comprehensive grasp of the humidity of the environment around the evaporator. When it is detected that the cooling mode is stopped, the controller will obtain and save the relative humidity values ​​at both ends of the evaporator recorded for the last time at this time. Next, the controller processes and saves the relative humidity values ​​recorded before the shutdown.

[0040] In one embodiment, the heating operation frequency in the first heating mode is greater than the heating operation frequency in the second heating mode.

[0041] In this embodiment, in order to achieve effective corrosion protection of the evaporator, two different heating modes, namely the first heating mode and the second heating mode, are used under different humidity conditions. According to the different relative humidity values ​​detected, the corresponding heating mode is selected, and the corresponding mode is controlled to operate at the corresponding heating frequency to achieve a reasonable drying effect. If the relative humidity value of the evaporator is detected to be greater than a preset threshold, such as 50%, the controller will start the first heating mode and also start the heating element. In the first heating mode, in order to ensure that the residual moisture on the surface of the evaporator copper tube can evaporate quickly to avoid the risk of corrosion, the heating operation frequency can be set to a higher frequency. For example, the controller can set the operating frequency of the compressor to 40Hz to quickly generate a higher temperature and cooperate with the work of the heating element to accelerate the evaporation of moisture. At the same time, the first humidity sensor and the second humidity sensor will continue to detect the relative humidity values ​​at both ends of the evaporator to ensure that the drying process can be stopped in time when it reaches below the expected humidity value.

[0042] Furthermore, if the relative humidity value is lower than or equal to a preset threshold, the controller will start the second heating mode. In the second heating mode, in order to save energy and maintain efficient operation of the air conditioner, the controller sets a lower heating operation frequency. For example, the compressor operating frequency can be set to 36Hz to generate temperature at a lower frequency, thereby avoiding excessive energy consumption. In the second heating mode, generally only the second heating mode is turned on without starting the heating element, thereby further saving energy. The first humidity sensor and the second humidity sensor still monitor the relative humidity at both ends of the evaporator to ensure that the heating operation is automatically stopped after the humidity reaches a safe value.

[0043] In step S102, after the cooling mode ends, it is determined whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold value (e.g., 50%) inside the system. The preset threshold value is used to distinguish between high humidity and low humidity environments, thereby determining the operating mode required in the subsequent anti-corrosion drying stage. When it is determined that any one of the relative humidity values ​​at both ends of the evaporator is greater than the preset threshold value, it means that the humidity of the environment around the evaporator is high, and it is necessary to strengthen the drying effect on the surface of the evaporator to effectively prevent the copper tube from accelerating corrosion due to residual moisture. At this time, the controller will simultaneously start the first heating mode and the heating element. It should be noted that when it is determined that the relative humidity values ​​at both ends of the evaporator are less than or equal to the preset threshold value, it means that the humidity on the surface of the evaporator is low, and usually too much additional heating is not required to dry the moisture. Therefore, the controller only starts the second heating mode at this time, without starting the heating element. When one of the relative humidity values ​​at both ends of the evaporator is greater than the preset threshold value, and the other relative humidity value is less than or equal to the preset threshold value, this situation is also determined as the need to start the first heating mode and the heating element at the same time.

[0044] In one embodiment, the step S102 includes:

[0045] When any one of the relative humidity values ​​at two ends of the evaporator is greater than the preset threshold, starting the heating element at the corresponding end;

[0046] Comparing the relative humidity values ​​at both ends of the evaporator with a classification threshold; wherein the preset threshold is less than the classification threshold;

[0047] When two of the relative humidity values ​​at both ends of the evaporator are less than or equal to the classification threshold, starting the first heating mode at a first heating operation frequency;

[0048] When any one of the relative humidity values ​​at both ends of the evaporator is greater than the classification threshold, the first heating mode is started with a second heating operation frequency; wherein the first heating operation frequency is less than the second heating operation frequency.

[0049] In this embodiment, the relative humidity value is compared with the preset threshold and the classification threshold set in the system to determine the appropriate heating mode and heating operation frequency. Here, the preset threshold is used to preliminarily determine whether the humidity level requires additional drying treatment, and the classification threshold is used to subdivide the humidity range and further distinguish different levels of humidity. Among them, the preset threshold is set to a lower humidity value, such as 50%, to determine whether the heating element needs to be started; and the classification threshold is set to a higher humidity value higher than the preset threshold, such as 90%, for further classification under high humidity conditions to determine the appropriate heating operation frequency.

[0050] When any of the relative humidity values ​​at both ends of the evaporator is greater than the preset threshold, the heating element and the first heating mode at the corresponding end need to be started, and the first heating mode needs to adopt the corresponding heating operation frequency according to the comparison result of the relative humidity value and the classification threshold. When the controller detects that the relative humidity values ​​at both ends of the evaporator are greater than the preset threshold but less than or equal to the classification threshold (for example, the humidity is between 50%-90%), it indicates that the humidity on the surface of the evaporator is high, but has not reached an extremely high level. At this time, the controller will start the first heating mode and set the air conditioner to heat at the first heating operation frequency, and use the heating element to accelerate the evaporation of moisture on the surface of the evaporator copper tube. When the controller detects that any of the relative humidity values ​​at both ends of the evaporator is greater than the classification threshold (for example, the humidity is higher than 90%), it indicates that the humidity on the surface of the evaporator is at an extremely high level, and usually a stronger heating intensity is required to quickly evaporate the moisture to avoid copper tube corrosion caused by long-term moisture residue. Therefore, under this humidity condition, the controller will start the first heating mode, set the air conditioner to heat at the second heating operation frequency, and start the heating element to maximize the drying effect.

[0051] This embodiment uses different heating modes in different humidity ranges and cooperates with heating elements to achieve intelligent control of the evaporation process of water on the evaporator surface. It can not only provide rapid drying and anti-corrosion effects under high humidity conditions, but also save energy under moderate humidity conditions, ensuring long-term and efficient operation of the air conditioner, thereby effectively extending the service life of the air conditioner evaporator. Specific setting examples can be referred to as shown in Table 1 below:

[0052]

[0053] Table 1

[0054] The above table is for reference only. The heating operation frequency, preset threshold, classification threshold, and set time can be adaptively adjusted according to needs.

[0055] In step S103, after entering the first heating mode, the controller detects the relative humidity at both ends of the evaporator in real time through the first humidity sensor and the second humidity sensor. When it is detected that the relative humidity values ​​at both ends of the evaporator meet or the running time meets the heating exit condition, it indicates that the moisture on the surface of the evaporator has been basically evaporated and meets the drying requirement. At this time, the controller will stop the operation of the heating element at the corresponding end and issue a command to exit the first heating mode. In the second heating mode, when it is detected that the running time of the second heating mode has reached the preset time, the controller will determine that the heating exit condition is met and issue a command to exit the second heating mode. At this time, the controller will turn off the heating function of the compressor.

[0056] In one embodiment, the step S103 includes:

[0057] In the first heating mode, when it is detected that the relative humidity values ​​at both ends of the evaporator are less than or equal to a preset threshold, exiting the first heating mode;

[0058] Alternatively, in the first heating mode, when it is detected that the running time of the first heating mode reaches a first time threshold, the first heating mode is exited.

[0059] In this embodiment, after entering the first heating mode, when it is detected that the relative humidity values ​​at both ends of the evaporator are less than or equal to a preset threshold value (for example, 50%), it is determined that the moisture on the surface of the evaporator has been basically evaporated, and there is no need to continue heating at this time. After the heating exit condition is met, the controller issues a command to exit the first heating mode. This embodiment also sets an operating time limit in the first heating mode, namely the first time threshold, which is used to exit the first heating mode by time judgment when the humidity condition is not met. After the first heating mode is started, the controller will synchronously record the operating time. When the operating time of the first heating mode reaches the first time threshold, the controller determines that the time exit condition is met, and even if the relative humidity value has not completely dropped below the preset threshold, the first heating mode will be exited according to the time condition.

[0060] In one embodiment, the step S103 further includes:

[0061] In the second heating mode, when it is detected that the running time of the second heating mode reaches a second time threshold, the second heating mode is exited.

[0062] In this embodiment, in the second heating mode, the controller sets a predetermined operation time threshold, i.e., the second time threshold, which is used to limit the duration of the second heating mode to avoid increased energy consumption and excessive load caused by long-term high-frequency operation. At the same time as the second heating mode is started, the controller starts to record the operation time of the second heating mode. When the operation time of the second heating mode reaches the second time threshold, the controller determines that the time exit condition is met. At this time, regardless of whether the relative humidity value drops to the ideal level, the controller will issue a command to exit the second heating mode.

[0063] The first time threshold and the second time threshold can be set to be the same or different according to the situation.

[0064] In step S104, the heating elements are turned on at the same time when the first heating mode is started, and the corresponding end of the evaporator is locally heated by controlling the heating elements at the corresponding end to quickly evaporate the residual moisture on the surface of the copper tube and reduce the risk of corrosion of the copper tube in a high humidity environment. When it is detected that the relative humidity at either end of the evaporator has dropped below the preset threshold, the controller determines that the heating exit condition has been reached. At this time, the controller issues an instruction to control the heating element at the corresponding end to stop working, so as to turn off the heating element. The controller starts timing after the heating element is started, and continuously records the running time of this mode. When it is detected that the cumulative running time of the heating element reaches the heating exit condition, the controller issues an instruction to control the heating element to stop working and turn off the heating element.

[0065] In one embodiment, the heating element includes a first heating element and a second heating element, and the step S104 includes:

[0066] When it is detected that the relative humidity value at one end of the evaporator close to the first heating element is less than or equal to a preset threshold, turning off the first heating element;

[0067] Alternatively, when it is detected that the operating time of the first heating element reaches a third time threshold, the first heating element is turned off.

[0068] In this embodiment, after the heating element is started, the relative humidity value detected by the first humidity sensor is judged. When the relative humidity value is detected to be less than or equal to the preset threshold, the controller issues an instruction to control the first heating element to stop heating, thereby turning off the first heating element. If the first humidity sensor fails to detect that the relative humidity value reaches the preset threshold, but the accumulated running time of the first heating element has reached the preset maximum time limit (i.e., the third time threshold), the controller will directly turn off the first heating element.

[0069] In one embodiment, the heating element includes a first heating element and a second heating element, and the step S104 further includes:

[0070] When it is detected that the relative humidity value at one end of the evaporator close to the second heating element is less than or equal to a preset threshold, the second heating element is turned off;

[0071] Alternatively, when it is detected that the operating time of the second heating element reaches a fourth time threshold, the second heating element is turned off.

[0072] In this embodiment, as with the first heating element, after the heating element is started, the relative humidity value detected by the second humidity sensor is judged. When the relative humidity value detected is less than or equal to the preset threshold, the controller issues an instruction to control the second heating element to stop heating, thereby turning off the second heating element. If the second humidity sensor fails to detect that the relative humidity value reaches the preset threshold, but the accumulated running time of the second heating element has reached the preset maximum time limit (i.e., the fourth time threshold), the controller will directly turn off the second heating element.

[0073] The third time threshold and the fourth time threshold can be set to be the same or different according to the situation. The first time threshold and the second time threshold can be set to be greater than the third time threshold. The first time threshold and the second time threshold can be set to be greater than the fourth time threshold.

[0074] To further eliminate internal excess heat and extend the service life of the equipment, after the heating mode is exited, the controller will delay shutting down the air conditioner's internal fan, for example, delaying 1 minute, to discharge excess heat and avoid internal heat accumulation.

[0075] Combination Figure 2As shown, an embodiment of the present invention also provides an anti-corrosion control device for performing anti-corrosion control on a copper tube of an evaporator in an air conditioner. Both ends of the evaporator are provided with heating elements. The anti-corrosion control device 200 includes:

[0076] The humidity acquisition unit 201 is used to detect the humidity at both ends of the evaporator after the cooling mode is started, and record the relative humidity values ​​at both ends of the evaporator when the cooling mode is stopped;

[0077] The heating start unit 202 is used to determine whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold value, and if so, start the first heating mode and the heating element at the corresponding end at the same time, and if not, start only the second heating mode;

[0078] The first exit unit 203 is used to exit the first heating mode when it is detected that the relative humidity values ​​at both ends of the evaporator or the running time of the first heating mode meets the heating exit condition in the first heating mode; and exit the second heating mode when it is detected that the running time of the second heating mode meets the heating exit condition in the second heating mode;

[0079] The second exit unit 204 is used to turn off the heating element at any end of the evaporator when it is detected that the relative humidity value at any end of the evaporator or the operating time of the heating element at the corresponding end meets the heating exit condition.

[0080] In this embodiment, the humidity acquisition unit 201 detects the humidity at both ends of the evaporator after the cooling mode is started, and records the relative humidity values ​​at both ends of the evaporator when the cooling mode is stopped; the heating start unit 202 determines whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold value, and if so, starts the first heating mode and the heating element at the corresponding end at the same time, if not, only starts the second heating mode; the first exit unit 203 exits the first heating mode in the first heating mode when it is detected that the relative humidity values ​​at both ends of the evaporator or the running time of the first heating mode meets the heating exit condition; in the second heating mode, exits the second heating mode when it is detected that the running time of the second heating mode meets the heating exit condition; the second exit unit 204 turns off the heating element at the corresponding end when it is detected that the relative humidity value at either end of the evaporator or the running time of the heating element at the corresponding end meets the heating exit condition.

[0081] In one embodiment, the humidity acquisition unit 201 includes:

[0082] A humidity detection unit, used for detecting the humidity at both ends of the evaporator after the refrigeration mode is started, and recording the relative humidity values ​​at both ends of the evaporator once every predetermined time period;

[0083] The record keeping unit is used to obtain and save the most recently recorded relative humidity value at both ends of the evaporator when it is detected that the cooling mode is stopped.

[0084] In one embodiment, the heating start unit 202 includes:

[0085] A detection and judgment unit, configured to start the heating element at the corresponding end when any one of the relative humidity values ​​at the two ends of the evaporator is greater than the preset threshold value;

[0086] A classification judgment unit, used to compare the relative humidity values ​​at both ends of the evaporator with a classification threshold; wherein the preset threshold is less than the classification threshold;

[0087] a first starting unit, configured to start the first heating mode at a first heating operation frequency when two of the relative humidity values ​​at both ends of the evaporator are less than or equal to a classification threshold;

[0088] The second starting unit is used to start the first heating mode with a second heating operation frequency when any one of the relative humidity values ​​at both ends of the evaporator is greater than the classification threshold; wherein the first heating operation frequency is less than the second heating operation frequency.

[0089] In one embodiment, the first exit unit 203 includes:

[0090] A first heating unit, configured to exit the first heating mode when it is detected that the relative humidity values ​​at both ends of the evaporator are less than or equal to a preset threshold value in the first heating mode;

[0091] The second heating unit is configured to, in the first heating mode, exit the first heating mode when it is detected that the running time of the first heating mode reaches a first time threshold.

[0092] In one embodiment, the first exit unit 203 further includes:

[0093] The threshold detection unit is used to exit the second heating mode in the second heating mode when it is detected that the running time of the second heating mode reaches a second time threshold.

[0094] In one embodiment, the heating element includes a first heating element and a second heating element, and the second exit unit 204 includes:

[0095] A first heating unit, configured to turn off the first heating element when detecting that the relative humidity value at one end of the evaporator close to the first heating element is less than or equal to a preset threshold;

[0096] The second heating unit is configured to turn off the first heating element when it is detected that the operating time of the first heating element reaches a third time threshold.

[0097] In one embodiment, the heating element includes a first heating element and a second heating element, and the second exit unit 204 further includes:

[0098] a third heating unit, configured to turn off the second heating element when detecting that the relative humidity value at one end of the evaporator close to the second heating element is less than or equal to a preset threshold;

[0099] The fourth heating unit is used to turn off the second heating element when it is detected that the operating time of the second heating element reaches a fourth time threshold.

[0100] Since the embodiments of the apparatus part correspond to the embodiments of the method part, please refer to the description of the embodiments of the method part for the embodiments of the apparatus part, which will not be repeated here.

[0101] Combination Figure 3 As shown, an embodiment of the present invention also provides an air conditioner, comprising the anti-corrosion control device as described above.

[0102] In this embodiment, the air conditioner further comprises an air conditioner body 10, a tripod 20, and a liquid distribution branch 30. The tripod 20 is arranged on one side of the air conditioner body 10, and the liquid distribution branch 30 is arranged on the other side of the air conditioner body 10; the tripod 20 is provided with a first heating element and a first humidity sensor, and the liquid distribution branch 30 is provided with a second heating element and a second humidity sensor. Figure 3 It can be seen that the tripod 20 is located on the left side of the air-conditioning body 10, and the first heating element and the first humidity sensor can detect and heat the left side of the air-conditioning body 10; similarly, the liquid separation branch 30 is located on the right side of the air-conditioning body 10, and the second heating element and the second humidity sensor can detect and heat the right side of the air-conditioning body 10. A controller (i.e., an anti-corrosion control device) is arranged next to the liquid separation branch 30, which can detect the state of the air conditioner and obtain relevant parameters, and can also issue instructions to control the corresponding mode to start or shut down. It should be noted that the controller is installed separately by a plastic part, and the controller does not contact the liquid separation branch 30.

[0103] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

[0104] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A method for controlling corrosion of a copper tube of an evaporator in an air conditioner, wherein both ends of the evaporator are provided with heating elements, characterized in that: The anti-corrosion control method comprises: After the cooling mode is started, the humidity at both ends of the evaporator is detected, and the relative humidity values ​​at both ends of the evaporator are recorded when the cooling mode is stopped; Determine whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold value, if so, start the first heating mode and the heating element at the corresponding end at the same time, if not, start only the second heating mode; In the first heating mode, when it is detected that the relative humidity value at both ends of the evaporator or the running time of the first heating mode meets the heating exit condition, the first heating mode is exited; in the second heating mode, when it is detected that the running time of the second heating mode meets the heating exit condition, the second heating mode is exited; When it is detected that the relative humidity value at any end of the evaporator or the operating time of the heating element at the corresponding end meets the heating exit condition, the heating element at the corresponding end is turned off.

2. The anti-corrosion control method according to claim 1, characterized in that: The heating operation frequency in the first heating mode is greater than the heating operation frequency in the second heating mode.

3. The anti-corrosion control method according to claim 1, characterized in that: If so, the first heating mode and the heating element at the corresponding end are started simultaneously, including: When any one of the relative humidity values ​​at two ends of the evaporator is greater than the preset threshold, starting the heating element at the corresponding end; Comparing the relative humidity values ​​at both ends of the evaporator with a classification threshold; wherein the preset threshold is less than the classification threshold; When two of the relative humidity values ​​at both ends of the evaporator are less than or equal to the classification threshold, starting the first heating mode at a first heating operation frequency; When any one of the relative humidity values ​​at both ends of the evaporator is greater than the classification threshold, the first heating mode is started with a second heating operation frequency; wherein the first heating operation frequency is less than the second heating operation frequency.

4. The anti-corrosion control method according to claim 1, characterized in that: In the first heating mode, when it is detected that the relative humidity values ​​at both ends of the evaporator or the running time of the first heating mode meets the heating exit condition, exiting the first heating mode includes: In the first heating mode, when it is detected that the relative humidity values ​​at both ends of the evaporator are less than or equal to a preset threshold, exiting the first heating mode; Alternatively, in the first heating mode, when it is detected that the running time of the first heating mode reaches a first time threshold, the first heating mode is exited.

5. The anti-corrosion control method according to claim 1, characterized in that: In the second heating mode, when it is detected that the running time of the second heating mode meets the heating exit condition, exiting the second heating mode includes: In the second heating mode, when it is detected that the running time of the second heating mode reaches a second time threshold, the second heating mode is exited.

6. The anti-corrosion control method according to claim 1, characterized in that: The heating element comprises a first heating element and a second heating element, and when it is detected that the relative humidity value at either end of the evaporator or the running time of the heating element at the corresponding end meets the heating exit condition, the heating element at the corresponding end is turned off, comprising: When it is detected that the relative humidity value at one end of the evaporator close to the first heating element is less than or equal to a preset threshold, turning off the first heating element; Alternatively, when it is detected that the operating time of the first heating element reaches a third time threshold, the first heating element is turned off.

7. The anti-corrosion control method according to claim 1, characterized in that: The heating element comprises a first heating element and a second heating element, and when it is detected that the relative humidity value at either end of the evaporator or the running time of the heating element at the corresponding end meets the heating exit condition, the heating element at the corresponding end is turned off, and further comprises: When it is detected that the relative humidity value at one end of the evaporator close to the second heating element is less than or equal to a preset threshold, the second heating element is turned off; Alternatively, when it is detected that the operating time of the second heating element reaches a fourth time threshold, the second heating element is turned off.

8. The anti-corrosion control method according to claim 1, characterized in that: The step of detecting the humidity at both ends of the evaporator after the refrigeration mode is started, and recording the relative humidity values ​​at both ends of the evaporator when the refrigeration mode is stopped, comprises: After the cooling mode is started, humidity detection is performed on both ends of the evaporator, and the relative humidity values ​​at both ends of the evaporator are recorded once every predetermined time period; When the cooling mode is detected to be stopped, the most recently recorded relative humidity value across the evaporator is obtained and saved.

9. An anti-corrosion control device for anti-corrosion control of the copper tube of the evaporator in the air conditioner, wherein heating elements are provided at both ends of the evaporator, characterized in that: include: A humidity acquisition unit, used to detect the humidity at both ends of the evaporator after the cooling mode is started, and record the relative humidity values ​​at both ends of the evaporator when the cooling mode is stopped; A heating start unit, used to determine whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold value, and if so, start the first heating mode and the heating element at the corresponding end at the same time, and if not, start only the second heating mode; A first exit unit, configured to exit the first heating mode in the first heating mode when it is detected that the relative humidity values ​​at both ends of the evaporator or the running time of the first heating mode meets a heating exit condition; In the second heating mode, when it is detected that the running time of the second heating mode meets the heating exit condition, the second heating mode is exited; The second exit unit is used to turn off the heating element at any end of the evaporator when it is detected that the relative humidity value at any end of the evaporator or the operating time of the heating element at the corresponding end meets the heating exit condition.

10. An air conditioner, characterized in that: Comprising the anti-corrosion control device as claimed in claim 9.

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