Anti-corrosion control method and device and air conditioner

Abstract

The application discloses an anti-corrosion control method, device and air conditioner. The anti-corrosion control method comprises the following steps: detecting the humidity of both ends of an evaporator and recording the relative humidity values; determining whether any of the relative humidity values is greater than a preset threshold value; if yes, starting a first heating mode and a heating element of a corresponding end simultaneously; if no, starting only a second heating mode; exiting the first heating mode when a heating exit condition is met in the first heating mode; exiting the second heating mode when the heating exit condition is met in the second heating mode; and closing the heating element of the corresponding end when a heating exit condition is met. The application can start the first heating mode, the second heating mode and the heating element under different conditions, and can exit the current mode when the set exit condition is met. In this way, the evaporator can accurately control the heating process, fully dehumidify and effectively discharge the water on the surface of the copper pipe, thereby prolonging the service life of the air conditioner and improving the user experience.

Description

TECHNICAL FIELD

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

[0002] During the use of the air conditioner, the copper pipe of the evaporator will be gradually corroded, especially in high humidity environments such as islands, ditches, and riverbanks, the corrosion speed will be accelerated, and even the copper pipe will be broken, which seriously affects the service life of the air conditioner. In the existing air conditioner control method, the water condensed on the copper pipe is allowed to evaporate naturally after each refrigeration operation, and there is a lack of effective control means to accelerate the evaporation of water, which makes the copper pipe leakage problem occur frequently when the air conditioner is used in a high humidity environment for a long time.

[0003] To solve the above problems, patent number CN116399026A proposes a method, system, device and medium for preventing corrosion of an aluminum evaporator of an air conditioner. The method detects the humidity near the evaporator through a humidity sensor, compares it with a preset humidity value, and controls the opening or closing of the heating element at the end of the shunt pipe, so as to achieve the purpose of preventing corrosion. However, this method has the following defects: first, the heating control cannot be accurately adjusted: in the refrigeration mode, when the humidity is higher than the preset value, the heating element will be turned on and will need to be turned on for a period of time to reduce the humidity to below the preset value. Second, the dehumidification is not complete: this method mainly focuses on the evaporation of water on one side of the branch pipe, while on the other side of the angle bracket, water film is formed with the U-shaped pipe, making it more difficult to remove the water. The heating function of the air conditioner alone cannot completely evaporate the water on the side of the angle bracket, resulting in the long-term retention of water on the surface of the copper pipe on the side of the angle bracket after each refrigeration operation, which needs to be naturally dried, and this will accelerate the corrosion of the copper pipe over time.

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

[0005] The embodiments of the present application provide an anti-corrosion control method, device and air conditioner, which aims to solve the problem of inaccurate heating control and incomplete dehumidification in the existing anti-corrosion method of the copper pipe of the evaporator.

[0006] In a first aspect, the embodiments of the present application provide an anti-corrosion control method for controlling the corrosion of the copper pipe of the evaporator in an air conditioner, both ends of the evaporator are provided with heating elements, and the anti-corrosion control method comprises:

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

[0008] determining whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold, and if so, simultaneously activating the first heating mode and the heating element at the corresponding end; if not, activating 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 either 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 heating elements are provided at both ends of the evaporator, comprising:

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

[0013] a heating activation unit, configured to determine whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold, and if so, activate the first heating mode and the heating element at the corresponding end simultaneously; if not, activate only the second heating mode;

[0014] a first exit unit, configured to, in a first heating mode, exit the first heating mode when it is detected that the relative humidity value at both ends of the evaporator or the operating time of the first heating mode meets a heating exit condition; and, in a second heating mode, exit the second heating mode when it is detected that the operating time of the second heating mode meets the heating exit condition;

[0015] The second exit unit is configured to turn off the heating element at either end of the evaporator when it is detected that the relative humidity value at either end of the evaporator or the operating time of the heating element at the corresponding end meets a 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 described above.

[0017] The embodiment of the present application provides a kind of anticorrosion control method, for the copper pipe of evaporator in air conditioner is carried out anticorrosion control, the evaporator both ends are provided with heating element, the anticorrosion control method includes: after starting in refrigeration mode, the humidity of the evaporator both ends is detected, and the relative humidity value of evaporator both ends when refrigeration mode stops is recorded;Determine whether any one of the relative humidity value of evaporator both ends is greater than preset threshold value, if yes, simultaneously start first heating mode and the heating element of corresponding end, if no, only start second heating mode;In first heating mode, when detecting that the relative humidity value of evaporator both ends or the running time of the first heating mode satisfies heating exit condition, exit the first heating mode;In second heating mode, when detecting that the running time of the second heating mode satisfies heating exit condition, exit the second heating mode;When detecting that the relative humidity value of evaporator any one end or the running time of the heating element of corresponding end satisfies heating exit condition, then the heating element of corresponding end is closed.The present application compares relative humidity value with preset threshold value, and corresponding first heating mode, second heating mode and heating element are started under different conditions, when meeting the set exit condition, corresponding first heating mode, second heating mode and heating element can be exited.Such that, evaporator can accurately control heating process, fully dehumidify, and effectively discharge copper pipe surface moisture, thereby prolong the service life of air conditioner, improve user experience.

[0018] The embodiment of the present application also provides an anticorrosion control device and air conditioner, also have the beneficial effects described above. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0020] Figure 1 A flowchart of an anticorrosion control method provided by the embodiment of the present application is shown.

[0021] Figure 2 A schematic block diagram of an anticorrosion control device provided by the embodiment of the present application is shown.

[0022] Figure 3 A structural schematic diagram of an air conditioner provided by the embodiment of the present application is shown.

[0023] Explanation of symbols in the figure:

[0024] 10, air conditioner body; 20, tripod; 30, branch pipe. DETAILED DESCRIPTION

[0025] 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 them. All other embodiments obtained by ordinary technicians in this 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.

[0026] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

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

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

[0029] Combine 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. The anti-corrosion control method includes 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; if so, simultaneously activating the first heating mode and the heating element at the corresponding end; if not, activating only the second heating mode;

[0032] S103: In the first heating mode, when it is detected that the relative humidity value at both ends of the evaporator or the operation 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 operation time of the second heating mode meets the heating exit condition, exit the second heating mode;

[0033] S104、When the relative humidity value of any one end of the evaporator or the running time of the heating element of the corresponding end meets the heating exit condition, the heating element of 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 at intervals during the running 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 values at both ends of the evaporator.

[0035] In an embodiment, the step S101 comprises:

[0036] 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 every predetermined time interval;

[0037] When it is detected that the cooling mode stops, the last recorded relative humidity value at both ends of the evaporator is obtained and saved;

[0038] The saved relative humidity values at both ends of the evaporator are calculated.

[0039] In this embodiment, after entering the cooling mode, the controller activates the first humidity sensor and the second humidity sensor connected to both ends of the evaporator, and monitors the relative humidity values at both ends of the evaporator. The controller collects humidity at regular intervals according to the 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 running of the cooling mode, the controller continuously obtains the humidity change at both ends of the evaporator through this regular detection, thereby forming a dynamic humidity monitoring data chain to ensure comprehensive understanding of the humidity of the environment around the evaporator. When it is detected that the cooling mode stops, the controller obtains and saves the last recorded relative humidity value at both ends of the evaporator at this time. Next, the controller processes and saves the saved pre-stop recorded relative humidity value.

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

[0041] In this embodiment, to effectively prevent corrosion of the evaporator, two different heating modes are employed under different humidity conditions: a first heating mode and a second heating mode. Based on the detected relative humidity, the corresponding heating mode is selected and controlled to operate at the corresponding heating frequency to achieve the desired drying effect. If the evaporator's relative humidity is detected to be greater than a preset threshold, such as 50%, the controller activates the first heating mode and also activates the heating element. In the first heating mode, the heating frequency can be set to a higher frequency to ensure rapid evaporation of residual moisture on the surface of the evaporator's copper tubes, thereby avoiding the risk of corrosion. For example, the controller can set the compressor operating frequency to 40Hz to quickly generate a higher temperature and cooperate with the heating element to accelerate moisture evaporation. Simultaneously, the first and second humidity sensors continuously monitor the relative humidity at both ends of the evaporator, ensuring that the drying process is terminated promptly when the humidity falls below the desired 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 the 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, a determination is made as to whether any of the relative humidity values ​​at either end of the evaporator is greater than a preset threshold within the system (e.g., 50%). The preset threshold is used to distinguish between high and low humidity environments, thereby determining the required operating mode for the subsequent anti-corrosion drying phase. If any of the relative humidity values ​​at either end of the evaporator is greater than the preset threshold, it indicates that the ambient humidity around the evaporator is high, and enhanced drying of the evaporator surface is necessary to effectively prevent accelerated corrosion of the copper tube due to residual moisture. At this point, the controller simultaneously activates the first heating mode and the heating element. It should be noted that if both the relative humidity values ​​at either end of the evaporator are less than or equal to the preset threshold, it indicates that the evaporator surface humidity is low and generally does not require excessive additional heating to dry out the moisture. Therefore, the controller only activates the second heating mode, without activating the heating element. If one of the relative humidity values ​​at either end of the evaporator is greater than the preset threshold, and the other is less than or equal to the preset threshold, it is also determined that the first heating mode and the heating element need to be activated simultaneously.

[0044] In one embodiment, step S102 includes:

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

[0046] comparing the relative humidity values at both ends of the evaporator with a grading threshold value; wherein the preset threshold value is less than the grading threshold value;

[0047] when both of the relative humidity values at both ends of the evaporator are less than or equal to the grading threshold value, 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 grading threshold value, starting the first heating mode at 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 values are compared with the preset threshold value and the grading threshold value set inside the system to determine the appropriate heating mode and heating operation frequency. Here, the preset threshold value is used to preliminarily determine whether the humidity level needs additional drying treatment, while the grading threshold value is used to subdivide the humidity range and further distinguish humidity conditions of different degrees. Among them, the preset threshold value is set to a lower humidity value, for example 50%, to determine whether to start the heating element; and the grading threshold value is set to a higher humidity value higher than the preset threshold value, for example 90%, to further grade in the case of higher humidity to determine the appropriate heating operation frequency.

[0050] When any one of the relative humidity values at both ends of the evaporator is greater than the preset threshold value, the corresponding end heating element and the first heating mode need to be started, and the first heating mode needs to use the corresponding heating operation frequency according to the comparison result of the relative humidity value and the grading threshold value. When the controller detects that the relative humidity values at both ends of the evaporator are greater than the preset threshold value but less than or equal to the grading threshold value (for example, the humidity is between 50%-90%), it indicates that the humidity of the evaporator surface 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, while using the heating element to accelerate the evaporation of water on the surface of the evaporator copper pipe. When the controller detects that any one of the relative humidity values at both ends of the evaporator is greater than the grading threshold value (for example, the humidity is higher than 90%), it indicates that the humidity of the evaporator surface is at an extremely high level, and usually needs stronger heating intensity to quickly evaporate the water and avoid copper pipe corrosion caused by long-time water residue. Therefore, under this humidity condition, the controller will start the first heating mode and set the air conditioner to heat at the second heating operation frequency, while starting the heating element to maximize the drying effect.

[0051] This embodiment achieves intelligent control of the evaporation process on the evaporator surface by employing different heating modes and coordinating heating elements within different humidity ranges. This not only provides rapid drying and corrosion protection under high humidity conditions, but also saves 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 are shown in Table 1 below:

[0052]

[0053] Table 1

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

[0055] In step S103, after entering the first heating mode, the controller uses the first and second humidity sensors to monitor the relative humidity at both ends of the evaporator in real time. If the relative humidity at both ends of the evaporator meets the heating exit condition or the operating time meets the heating exit condition, it indicates that the moisture on the evaporator surface has been substantially evaporated, meeting the drying requirement. At this point, the controller will stop the heating element at the corresponding end and issue a command to exit the first heating mode. In the second heating mode, if the controller detects that the operating time of the second heating mode has reached a preset time, it will determine that the heating exit condition has been met and issue a command to exit the second heating mode. At this point, the controller will shut down the compressor's heating function.

[0056] In one embodiment, 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. After the heating exit condition is met, the controller issues an instruction 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 operating time threshold, namely the second time threshold, to limit the duration of the second heating mode and prevent increased energy consumption and excessive load caused by prolonged, high-frequency operation. Upon activation of the second heating mode, the controller begins recording the operating time of the second heating mode. When the operating time of the second heating mode reaches the second time threshold, the controller determines that the time exit condition has been met. At this point, the controller will issue a command to exit the second heating mode, regardless of whether the relative humidity value has dropped to the desired level.

[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 simultaneously turned on when the first heating mode is activated. By controlling the heating elements at the corresponding ends, localized heating is performed on the corresponding ends of the evaporator to quickly evaporate the residual moisture on the surface of the copper tube, reducing the risk of corrosion to the copper tube in a high-humidity environment. When the relative humidity at either end of the evaporator is detected to have dropped below a preset threshold, the controller determines that the heating exit condition has been met. At this point, the controller issues a command to control the heating elements at the corresponding ends to stop working, thereby turning off the heating elements. The controller begins timing after the heating elements are turned on, continuously recording the operating time of this mode. When it detects that the cumulative operating time of the heating elements has reached the heating exit condition, the controller issues a command to control the heating elements to stop working, turning off the heating elements.

[0065] In one embodiment, the heating element includes a first heating element and a second heating element, and 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 activated, the relative humidity value detected by the first humidity sensor is determined. If the relative humidity value detected is less than or equal to a preset threshold, the controller issues a command 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 has reached the preset threshold, but the accumulated operating 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 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, turning off the second heating element;

[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, similar to the first heating element, after the heating element is activated, the relative humidity value detected by the second humidity sensor is evaluated. If the relative humidity value detected is less than or equal to a preset threshold, the controller issues a command to the second heating element to stop heating, thereby shutting down the second heating element. If the second humidity sensor fails to detect that the relative humidity value has reached the preset threshold, but the accumulated operating time of the second heating element has reached the preset maximum time limit (i.e., the fourth time threshold), the controller directly shuts down the second heating element.

[0073] The third time threshold and the fourth time threshold can be set to be the same or different depending on 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 exiting the heating mode, the controller will delay shutting down the air conditioner's internal fan, for example, delaying it for 1 minute, to discharge excess heat and avoid internal heat accumulation.

[0075] Combine Figure 2As shown, an embodiment of the present invention further provides an anti-corrosion control device for performing anti-corrosion control on a copper tube of an evaporator in an air conditioner. Heating elements are provided at both ends of the evaporator. 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 activation unit 202 is configured to determine whether any of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold value, and if so, activate the first heating mode and the heating element at the corresponding end simultaneously; if not, activate only the second heating mode;

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

[0079] The second exit unit 204 is configured 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. If so, the first heating mode and the heating element at the corresponding end are started at the same time; if not, only the second heating mode is started; 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 meet 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, configured 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 once every predetermined time period;

[0083] The record storage unit is used to obtain and store 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 starting unit 202 includes:

[0085] a detection and judgment unit, configured to activate 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;

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

[0087] a first starting unit, configured to start the first heating mode at a first heating operating 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 configured to start the first heating mode at a second heating operating 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 operating frequency is lower than the second heating operating frequency.

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

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

[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 configured to, in the second heating mode, exit the second heating mode when detecting 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] a second heating unit configured to turn off the first heating element when it is detected that the running time of the first heating element reaches a third time threshold.

[0097] In an embodiment, the heating element comprises a first heating element and a second heating element, and the second exiting unit 204 further comprises:

[0098] a third heating unit configured to turn off the second heating element when it is detected that the relative humidity value near one end of the second heating element is less than or equal to a preset threshold value;

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

[0100] Since the embodiments of the device part correspond to the embodiments of the method part, the embodiments of the device part are described in the description of the embodiments of the method part, which will not be described here.

[0101] In combination with Figure 3 the embodiments of the present application also provide an air conditioner comprising the anti-corrosion control device as described above.

[0102] In the present embodiment, the air conditioner further comprises an air conditioner body 10, a tripod 20, and a liquid distribution branch pipe 30, the tripod 20 is arranged on one side of the air conditioner body 10, and the liquid distribution branch pipe 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 pipe 30 is provided with a second heating element and a second humidity sensor, so that the left side of the air conditioner body 10 can be detected and heated by the first heating element and the first humidity sensor, and the right side of the air conditioner body 10 can be detected and heated by the second heating element and the second humidity sensor. Figure 3 As can be seen, the tripod 20 is located on the left side of the air conditioner body 10, and the first heating element and the first humidity sensor can detect and heat the left side of the air conditioner body 10; similarly, the liquid distribution branch pipe 30 is located on the right side of the air conditioner body 10, and the second heating element and the second humidity sensor can detect and heat the right side of the air conditioner body 10. A controller (i.e. an anti-corrosion control device) is arranged beside the liquid distribution branch pipe 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 stop. It should be noted that the controller is installed by a plastic piece, and the controller does not contact the liquid distribution branch pipe 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 this 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 used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

Claims

1. A method for controlling corrosion of a copper tube of an evaporator in an air conditioner, wherein heating elements are provided at both ends of the evaporator, 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; determining whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold, and if so, simultaneously activating the first heating mode and the heating element at the corresponding end; if not, activating 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 either 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, simultaneously starting the first heating mode and the heating element at the corresponding end includes: When any one of the relative humidity values ​​at both 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 a classification threshold, starting the first heating mode at a first heating operating 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 at a second heating operating frequency; wherein the first heating operating frequency is lower than the second heating operating 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 value 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 includes 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 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, including: 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 includes a first heating element and a second heating element. When it is detected that the relative humidity value at either 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. The method further includes: 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, turning off the second heating element; 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 cooling mode is started and recording the relative humidity values ​​at both ends of the evaporator when the cooling 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 controlling the corrosion of copper tubes in an air conditioner evaporator, wherein heating elements are provided at both ends of the evaporator, characterized in that: include: a humidity acquisition unit, configured to detect the humidity at both ends of the evaporator after the cooling mode is started, and to record the relative humidity values ​​at both ends of the evaporator when the cooling mode is stopped; a heating activation unit, configured to determine whether any one of the relative humidity values ​​at both ends of the evaporator is greater than a preset threshold, and if so, activate the first heating mode and the heating element at the corresponding end simultaneously; if not, activate 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 value 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 configured to turn off the heating element at either end of the evaporator when it is detected that the relative humidity value at either end of the evaporator or the operating time of the heating element at the corresponding end meets a heating exit condition.

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

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