Anti-condensation control method and device, and air conditioner

Abstract

The application aims to provide a control method and device for preventing condensation and an air conditioner. The method comprises the following steps: obtaining the internal temperature of an electric control box and the first ambient temperature outside the electric control box; determining whether the electric control box has a condensation risk according to the first ambient temperature and the internal temperature; and performing condensation prevention control on the electric control box when the compressor stops running and the electric control box has a condensation risk.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and specifically to a method, device, and air conditioner for preventing condensation. Background Technology

[0002] With the increasing use of multi-split air conditioners, the design capacity of individual modules within a unit space is becoming larger and larger, taking into account cost and ease of installation. The electrical control components are set in the electrical control box, and the layout space of the electrical control components is relatively limited. Therefore, heat dissipation of the electrical control components is particularly important.

[0003] Normally, refrigerant can be used to dissipate heat from electronic control components. However, when the refrigerant temperature is low, the temperature of some electronic control components may reach below the dew point temperature of the surrounding air. In severe cases, the generation of a large amount of condensate will cause the electronic control components to short-circuit and burn out. Summary of the Invention

[0004] The main objective of this invention is to provide a method, apparatus, and air conditioner for preventing condensation, which aims to control condensation based on the ambient temperature and the internal temperature of the electrical control box when the compressor is not running.

[0005] In a first aspect, this application provides a method for preventing condensation, which involves obtaining the internal temperature of the electrical control box and the first ambient temperature outside the electrical control box; determining whether there is a risk of condensation in the electrical control box based on the first ambient temperature and the internal temperature; and implementing anti-condensation control on the electrical control box when the compressor is detected to have stopped running and there is a risk of condensation in the electrical control box.

[0006] The control method of this application is used in the electrical control box of an air conditioner. The air conditioner includes a compressor and an electrical control box. The electrical control box has an internal storage space for housing electrical control components and a heat exchanger. The heat exchanger is connected to the refrigerant system of the air conditioner, and the heat exchanger cools the interior of the electrical control box through the phase change of the refrigerant.

[0007] During the refrigerant phase change process, heat dissipation within the control box is improved. However, this process can also lead to condensation. After shutdown, activating the anti-condensation control reduces the temperature difference between the ambient environment and the internal temperature of the control box, minimizing condensation inside. This prevents condensation from adhering to the control components after restarting, thus improving the reliability of the control system.

[0008] Anti-condensation control reduces the temperature difference between the ambient temperature and the internal temperature of the control box, causing the internal temperature of the control box to rise. In this application, activating anti-condensation control after shutdown can prevent the internal temperature of the control box from rising during air conditioner operation, ensuring the reliability of the electrical control operation.

[0009] Furthermore, based on the first ambient temperature and the internal temperature, it is determined whether there is a risk of condensation in the electrical control box, including: if the internal temperature is lower than the first ambient temperature, it is determined that there is a risk of condensation in the electrical control box; if the internal temperature is greater than or equal to the first ambient temperature, it is determined that there is no risk of condensation in the electrical control box.

[0010] Furthermore, the air conditioner includes: a temperature sensor disposed on the outside of the control box, and a temperature and humidity sensor. The first ambient temperature is the temperature collected by the temperature sensor. Based on the first ambient temperature and the internal temperature, it is determined whether there is a risk of condensation in the control box, including: acquiring the second ambient temperature and the relative humidity outside the control box; the second ambient temperature is collected by the temperature and humidity sensor; determining the dew point temperature outside the control box based on the second ambient temperature and the relative humidity; and determining whether there is a risk of condensation in the control box based on the first ambient temperature, the internal temperature, and the dew point temperature.

[0011] Furthermore, based on the first ambient temperature, the internal temperature, and the dew point temperature, it is determined whether there is a risk of condensation in the electrical control box, including: when the internal temperature is lower than the first ambient temperature, and / or the internal temperature is lower than or equal to the dew point temperature, it is determined that there is a risk of condensation in the electrical control box; when the internal temperature is greater than or equal to the first ambient temperature, and / or the internal temperature is greater than the dew point temperature, it is determined that there is no risk of condensation in the electrical control box.

[0012] Furthermore, when the internal temperature is lower than the first ambient temperature, and / or the internal temperature is lower than or equal to the dew point temperature, it is determined that the electrical control box has a condensation risk, including when the duration of the internal temperature being lower than the first ambient temperature is greater than a first duration, and / or the duration of the internal temperature being lower than or equal to the dew point temperature is greater than a second duration.

[0013] Furthermore, the method also includes: determining that there is no risk of condensation in the electrical control box when the duration of the internal temperature being lower than the first ambient temperature is less than or equal to the first duration, and / or the duration of the internal temperature being lower than or equal to the dew point temperature is less than or equal to the second duration.

[0014] Furthermore, the electrical control box includes a cooling fan, with an electric heating element installed behind the cooling fan to control condensation in the electrical control box, including using the electric heating element and the cooling fan to control condensation in the electrical control box.

[0015] Furthermore, the method also includes stopping the anti-condensation control when the duration of the internal temperature being greater than or equal to the first ambient temperature is greater than the third duration, and / or when the duration of the internal temperature being greater than the dew point temperature is greater than the fourth duration.

[0016] Furthermore, the internal temperature is the outlet air temperature of the heat exchanger, and / or the internal temperature is the surface temperature of the electronic control components.

[0017] Furthermore, the heat exchanger is an evaporator.

[0018] Furthermore, the evaporator inlet is connected to the outlet pipe of the outdoor unit heat exchanger, and the evaporator outlet is connected to the compressor return port or the inlet of the gas-liquid separator.

[0019] Furthermore, the electrical control box is a sealed electrical control box.

[0020] Secondly, this application provides an anti-condensation control device, which includes an acquisition module and a processing module. The acquisition module is used to acquire the internal temperature of the electrical control box and the first ambient temperature outside the electrical control box. The processing module is used to determine whether there is a risk of condensation in the electrical control box based on the first ambient temperature and the internal temperature. The processing module is also used to perform anti-condensation control on the electrical control box when it is detected that the compressor has stopped running and there is a risk of condensation in the electrical control box.

[0021] Furthermore, the processing module is specifically used to: determine that there is a risk of condensation in the electrical control box when the internal temperature is lower than the first ambient temperature; and determine that there is no risk of condensation in the electrical control box when the internal temperature is greater than or equal to the first ambient temperature.

[0022] Furthermore, the air conditioner includes: a temperature sensor disposed on the outside of the control box, and a temperature and humidity sensor, wherein the first ambient temperature is the temperature collected by the temperature sensor; an acquisition module, specifically used to: acquire the second ambient temperature and the relative humidity outside the control box; the second ambient temperature is collected by the temperature and humidity sensor; a processing module, specifically used to: determine the dew point temperature outside the control box based on the second ambient temperature and the relative humidity; the processing module is also specifically used to: determine whether there is a risk of condensation in the control box based on the first ambient temperature, the internal temperature, and the dew point temperature.

[0023] Furthermore, the processing module is specifically used to: determine that there is a risk of condensation in the electrical control box when the internal temperature is less than the first ambient temperature and / or when the internal temperature is less than or equal to the dew point temperature; and determine that there is no risk of condensation in the electrical control box when the internal temperature is greater than or equal to the first ambient temperature and / or when the internal temperature is greater than the dew point temperature.

[0024] Furthermore, the processing module is specifically used to: determine that there is a risk of condensation in the electrical control box when the duration of the internal temperature being lower than the first ambient temperature is greater than a first duration, and / or the duration of the internal temperature being less than or equal to the dew point temperature is greater than a second duration.

[0025] Furthermore, the processing module is also used to: determine that there is no risk of condensation in the electrical control box when the duration of the internal temperature being lower than the first ambient temperature is less than or equal to the first duration, and / or the duration of the internal temperature being lower than or equal to the dew point temperature is less than or equal to the second duration.

[0026] Furthermore, the electrical control box includes: a cooling fan, an electric heating element installed behind the cooling fan, and a processing module, specifically used to: use the electric heating element and the cooling fan to control the electrical control box against condensation.

[0027] Furthermore, the processing module is also used to: stop the anti-condensation control when the duration of the internal temperature being greater than or equal to the first ambient temperature is greater than the third duration, and / or when the duration of the internal temperature being greater than the dew point temperature is greater than the fourth duration.

[0028] Furthermore, the internal temperature is the outlet air temperature of the heat exchanger, and / or the internal temperature is the surface temperature of the electronic control components.

[0029] Furthermore, the heat exchanger is an evaporator.

[0030] Furthermore, the evaporator inlet is connected to the outlet pipe of the outdoor unit heat exchanger, and the evaporator outlet is connected to the compressor return port or the inlet of the gas-liquid separator.

[0031] Furthermore, the electrical control box is a sealed electrical control box.

[0032] Thirdly, this application provides an electrical control box, which has an internal accommodating space for accommodating electrical control components, a heat exchanger, a cooling fan, and an electric heating component installed behind the cooling fan. The heat exchanger cools the electrical control box through the phase change of the refrigerant, and the electric heating component and the cooling fan control the electrical control box to prevent condensation.

[0033] Fourthly, this application provides an air conditioner, including: a memory, a processor, a compressor, and an electronic control box as described in the third aspect; a heat exchanger is connected to the refrigerant system of the air conditioner, and the heat exchanger cools the electronic control box through a phase change of the refrigerant; the memory stores a computer program; when the processor executes the computer program, it is used to perform the method as described in the first aspect and any of the technical solutions in the first aspect.

[0034] Fifthly, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements any of the methods described above. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0036] Figure 1 A scenario diagram provided for an embodiment of this application; Figure 2 A flowchart illustrating an anti-condensation control method provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of an electrical control box provided in an embodiment of this application; Figure 5 This is a schematic diagram of another electrical control box provided in an embodiment of this application; Figure 6 A flowchart illustrating another anti-condensation control method provided in this application embodiment; Figure 7 This is a schematic diagram of the structure of an air conditioner 700 provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of an anti-condensation control device 800 provided in an embodiment of this application. Detailed Implementation

[0037] An air conditioner includes a compressor and an electrical control box. The electrical control box has an internal space for housing electrical control components and a heat exchanger. The heat exchanger is connected to the air conditioner's refrigerant system and cools the interior of the electrical control box through the phase change of the refrigerant.

[0038] During normal cooling or heating, the compressor can compress gaseous refrigerant into liquid. Some of the liquid refrigerant can evaporate and absorb heat in the heat exchanger inside the control box. After the circulating air is cooled by evaporation in the heat exchanger, it passes through the main control board and cools the main control board. Further circulating air passes through the heat dissipation fins and flows back to the heat exchanger, forming a complete cycle.

[0039] During the refrigerant phase change process, heat dissipation within the control box is relatively good. However, this also leads to condensation issues. Furthermore, when the compressor in the air conditioner stops running, the wiring holes on the outer frame of the control box allow humid air from outside the box to enter and condense inside the cooler areas. Therefore, preventing condensation when the compressor is not running is a pressing issue that needs to be addressed.

[0040] After shutdown, the anti-condensation control is activated. The temperature difference between the ambient temperature and the inside of the electrical control box reduces condensation inside the box, thus preventing condensation from adhering to the electrical control components after restarting and improving the reliability of the electrical control.

[0041] Anti-condensation control reduces the temperature difference between the ambient temperature and the internal temperature of the control box, causing the internal temperature of the control box to rise. In this application, after shutdown, the anti-condensation control is activated to prevent the internal temperature of the control box from rising during air conditioner operation, ensuring the reliability of the control box operation. Therefore, this application provides an anti-condensation control method, which acquires the internal temperature of the control box and a first ambient temperature outside the control box; determines whether there is a risk of condensation in the control box based on the first ambient temperature and the internal temperature; and, when the compressor stops running and a risk of condensation is detected in the control box, implements anti-condensation control to prevent short circuits and burnout of the control box due to condensation. It is understood that the anti-condensation control method of this application is used for the control box of an air conditioner. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0042] For example, Figure 1 This is a schematic diagram of a scenario provided for an embodiment of this application. For example... Figure 1 As shown, the scenario may include an air conditioner 101, an electronic device 102, and a server 103. The electronic device 102 is a computer, which will be used as an example for explanation.

[0043] like Figure 1 As shown, the anti-condensation control method described in this embodiment can be implemented in the processor of the air conditioner 101; alternatively, the air conditioner 101 can send the acquired first ambient temperature outside the control box and the internal temperature of the control box to the electronic device 102, causing the electronic device 102 to execute the anti-condensation control method and return the result to the air conditioner 101; or, the air conditioner 101 can send the acquired first ambient temperature outside the control box and the internal temperature of the control box to the server 103, causing the server 103 to execute the anti-condensation control method and return the result to the air conditioner 101. It is understood that the executing entity of the anti-condensation control method is not limited in this embodiment.

[0044] For example, Figure 2 This is a schematic flowchart illustrating an anti-condensation control method provided in an embodiment of this application. Figure 2 In the corresponding embodiments, the processor in the air conditioner is used as the execution subject of the anti-condensation control method for example. This example does not constitute a limitation on the embodiments of this application.

[0045] like Figure 2 As shown, the method for controlling condensation can include the following steps: S201. Obtain the internal temperature of the electrical control box and the first ambient temperature outside the electrical control box.

[0046] In this embodiment, the control box can be a sealed control box; the internal temperature can be obtained based on the detection of a temperature sensor inside the control box; the first ambient temperature (also known as the dry-bulb temperature of the environment) can be obtained based on the detection of a temperature sensor outside the control box, such as a temperature sensor inside an air conditioner (e.g., Figure 3 The temperature is obtained from the temperature sensor or temperature and humidity sensor 311 in the air conditioner, or from the temperature sensor on the outside of the air conditioner connected to the air conditioner. For example, the internal temperature and the first ambient temperature can be acquired in real time; or the internal temperature and the first ambient temperature can be acquired periodically, for example, every 5 seconds, every 10 seconds, or every 30 seconds.

[0047] For example, Figure 3 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of this application. Figure 3 As shown, the air conditioner may include: compressor 301, four-way reversing valve 302, outdoor unit heat exchanger assembly 303, main throttling component 304, auxiliary throttling component 305, electrical control box 306, heat exchanger 307, cooling fan 308, temperature sensor 309, low-pressure side pressure sensor 310, temperature sensor or temperature and humidity sensor 311, liquid side shut-off valve 312, and gas side shut-off valve 313, etc.

[0048] like Figure 3As shown, when the air conditioning system is started, the auxiliary throttling component 305 opens to its initial opening degree, which can be within the range of 0-1 / 3 of the maximum opening degree. The low-pressure side pressure sensor 310 detects the low-pressure side pressure of the compressor 301 in real time and determines the corresponding saturation temperature; the temperature sensor 309 detects the outlet air temperature of the heat exchanger 307 and determines the outlet superheat of the heat exchanger 307. The outlet superheat of the heat exchanger 307 can be the difference between the outlet air temperature of the heat exchanger 307 and the saturation temperature. For example, the outlet superheat of the heat exchanger 307 can be the difference between the outlet air temperature of the heat exchanger 307 and the saturation temperature. Therefore, the auxiliary throttling component 305 can be adjusted according to the difference between the outlet superheat of the heat exchanger 307 and the target outlet superheat. The cooling fan 308 is a variable frequency fan. The speed of the cooling fan 308 can be adjusted based on the temperature sensor in the electrical control box 306 and the corresponding temperature threshold. Similarly, the opening degree of the auxiliary throttling component 305 can be adjusted based on the temperature sensor in the electrical control box 306 and the corresponding temperature threshold. The adjustment cycle of both the cooling fan 308 and the auxiliary throttling component 305 can range from 0 to 120 seconds.

[0049] S202. Based on the first ambient temperature and the internal temperature, determine whether there is a risk of condensation in the electrical control box.

[0050] For example, the presence of condensation risk in the electrical control box can be determined based on the first ambient temperature and the internal temperature. For instance, if the internal temperature is lower than the first ambient temperature, it is determined that there is a risk of condensation in the electrical control box; or, if the internal temperature is greater than or equal to the first ambient temperature, it is determined that there is no risk of condensation in the electrical control box.

[0051] S203. When the compressor stops running and there is a risk of condensation in the electrical control box, the electrical control box is controlled to prevent condensation.

[0052] There are various reasons why the compressor might stop running, such as the air conditioner shutting down normally or the air conditioner system shutting down for protection. This application does not limit the reasons for this.

[0053] It is understandable that when the air conditioner compressor stops running, the wiring hole on the outer frame of the electrical control box allows humid air from the outside of the box to enter the box and condense in the cooler areas inside. Therefore, when the compressor stops running, it can be determined whether there is a risk of condensation in the electrical control box, thus preventing the box from short-circuiting due to condensation.

[0054] Based on this, when the compressor stops running and there is a risk of condensation in the control box, anti-condensation control can be implemented to prevent the control box from short-circuiting and burning out when condensation occurs inside the control box.

[0055] exist Figure 2 Based on the corresponding embodiment, S202 includes: obtaining the second ambient temperature and relative humidity outside the electrical control box; determining the dew point temperature outside the electrical control box based on the second ambient temperature and relative humidity; and determining whether there is a risk of condensation in the electrical control box based on the first ambient temperature, internal temperature and dew point temperature.

[0056] In this embodiment, both the second ambient temperature and relative humidity can be obtained based on the detection of a temperature and humidity sensor on the outside of the control box, such as a temperature and humidity sensor inside the air conditioner (e.g., Figure 3 The temperature is obtained by the temperature sensor or temperature and humidity sensor 311. Furthermore, there is a corresponding relationship between the second ambient temperature, relative humidity, and dew point temperature, and the corresponding dew point temperature can be obtained based on the measured second ambient temperature and relative humidity.

[0057] In some possible implementations, the presence of condensation risk in the electrical control box can be determined based on the dew point temperature and the internal temperature. For example, if the internal temperature is less than or equal to the dew point temperature, the electrical control box is deemed to have a condensation risk; or, if the internal temperature is greater than the dew point temperature, the electrical control box is deemed not to have a condensation risk.

[0058] Based on this, the risk of condensation in the electrical control box can be accurately detected by using the internal temperature and dew point temperature.

[0059] exist Figure 2 Based on the corresponding embodiments, the risk of condensation in the electrical control box is determined according to the first ambient temperature, the internal temperature, and the dew point temperature, including: when the internal temperature is lower than the first ambient temperature, and / or when the internal temperature is lower than or equal to the dew point temperature, the risk of condensation in the electrical control box is determined; when the internal temperature is greater than or equal to the first ambient temperature, and / or when the internal temperature is greater than the dew point temperature, the risk of condensation in the electrical control box is determined.

[0060] In possible implementations, when the duration of the internal temperature being lower than the first ambient temperature is greater than a first duration, and / or the duration of the internal temperature being lower than or equal to the dew point temperature is greater than a second duration, it is determined that there is a risk of condensation in the electrical control box.

[0061] In possible implementations, when the duration for which the internal temperature is lower than the first ambient temperature is less than or equal to the first duration, and / or when the duration for which the internal temperature is lower than or equal to the dew point temperature is less than or equal to the second duration, it is determined that there is no risk of condensation in the electrical control box.

[0062] The first duration can be 30 seconds, 1 minute, or 2 minutes, etc.; the second duration can be 30 seconds, 1 minute, or 2 minutes, etc.; the first duration and the second duration can be the same or different, and this application embodiment does not limit this.

[0063] Based on this, the presence of condensation risk in the electrical control box can be accurately detected based on the ambient temperature, internal temperature, and dew point temperature; and the stability of condensation risk detection can be improved by detecting the duration of different conditions.

[0064] exist Figure 2 Based on the corresponding embodiment, the electrical control box includes a cooling fan, and an electric heating element is installed behind the cooling fan. S203 includes: using the electric heating element and the cooling fan to control the electrical control box against condensation.

[0065] The electric heating element can be a component with a heating function, such as an electric heating wire. In this embodiment, the specific form of the electric heating element is not limited.

[0066] Understandably, during the anti-condensation control process, a cooling fan can be used to continuously blow air, or, in addition to the continuous blowing of the cooling fan, an electric heating element can be used to heat the air, so that the cooling fan can blow hot air to various positions of the electrical control box, thereby increasing the temperature of the electrical control box when there is a risk of condensation.

[0067] Based on this, the anti-condensation effect can be enhanced by using electric heating components and cooling fans to prevent condensation from forming in the electrical control box due to excessively low temperatures.

[0068] exist Figure 2 Based on the corresponding embodiment, when the duration of the internal temperature being greater than or equal to the first ambient temperature is greater than the third duration, and / or when the duration of the internal temperature being greater than the dew point temperature is greater than the fourth duration, the anti-condensation control is stopped.

[0069] The third duration can be 30 seconds, 1 minute, or 2 minutes, etc.; the fourth duration can be 30 seconds, 1 minute, or 2 minutes, etc.; the third duration and the fourth duration can be the same or different, and this application embodiment does not limit this.

[0070] Understandably, when the duration of the internal temperature being greater than or equal to the first ambient temperature exceeds the third duration, and / or the duration of the internal temperature being greater than the dew point temperature exceeds the fourth duration, it can be understood that the electrical control box no longer has the possibility of condensation, and therefore the anti-condensation control can be stopped. For example, the cooling fan and / or the electric heating elements can be stopped from operating.

[0071] exist Figure 2Based on the corresponding embodiments, the electrical control box includes: electrical control components and a heat exchanger; the internal temperature is the outlet air temperature of the heat exchanger, and / or the internal temperature is the surface temperature of the electrical control components.

[0072] For example, Figure 4 This is a schematic diagram of the structure of an electrical control box provided in an embodiment of this application. Figure 4 In the corresponding embodiment, the internal temperature is taken as the outlet air temperature of the heat exchanger for example.

[0073] When the internal temperature is the outlet air temperature of the heat exchanger, and the airflow inside the control box flows counterclockwise, the sensor 407 used to measure the internal temperature can be set as follows: Figure 4 The upper side of heat exchanger 401 shown in Figure a; or, when the internal temperature is the outlet air temperature of the heat exchanger, the sensor 407 used to measure the internal temperature can also be set as follows when the airflow in the control box flows clockwise. Figure 4 The lower side of heat exchanger 401 shown in b.

[0074] like Figure 4 As shown in Figure a, the electrical control box 402 may further include: a heat exchanger 401, an electrical control main board 403, an electrical control box temperature sensor, a cooling fan 405, and cooling fins 406. The electrical control box 402 can be... Figure 3 The electrical control box 306 and heat exchanger 401 can be... Figure 3 The heat exchanger 307 and the cooling fan 405 can be used in the middle. Figure 3 The cooling fan 308 in the middle.

[0075] For example, Figure 5 This is a schematic diagram of another electrical control box provided in an embodiment of this application. Figure 5 In the corresponding embodiment, the internal temperature is taken as the surface temperature of the electronic control component as an example for illustration. This electronic control component can be an electronic control motherboard.

[0076] When the internal temperature is the same as the surface temperature of the electronic control components, and the airflow inside the electronic control box is counterclockwise, the sensor 501 used to measure the internal temperature can be set as follows: Figure 5 The electronic control mainboard 403 shown in Figure a is located near the heat exchanger 401; or, when the internal temperature is the surface temperature of the electronic control components, the sensor 501 for measuring the internal temperature can also be located as shown in Figure a when the airflow inside the electronic control box is clockwise. Figure 5 The electronic control mainboard 403, shown as b, is located away from the heat exchanger 401. Figure 5 Other components of the electrical control box in section a (or b) can be found in [reference needed]. Figure 4the description in the corresponding embodiment will not be repeated herein.

[0077] It can be understood that Figure 5 the internal temperature measured by the temperature sensor 501 located on the surface of the electronic control component in the corresponding embodiment may be the lowest temperature inside the electronic control box.

[0078] On Figure 2 the basis of the corresponding embodiments, for a better understanding of the various embodiments of the present application, the anti-condensation control method described in the embodiments of the present application is illustrated below by taking that the internal temperature is TA, the first ambient temperature is TH, the second ambient temperature is TD, the relative humidity is TW, the dew point temperature is TDE, both the first duration and the second duration are TS1, and both the third duration and the fourth duration are TS2 as an example, and this example does not constitute a limitation on the embodiments of the present application.

[0079] For example, Figure 6 is a schematic flowchart of another anti-condensation control method provided in the embodiment of the present application. As shown in Figure 6 the figure, the anti-condensation control method may include the following steps: S601. When the air conditioner is turned on and running, acquire TA, TH, TD and TW.

[0080] S602. Judge whether TA < TH, and / or TA ≤ TDE.

[0081] Wherein, TDE may be obtained based on TW and TD; when TA < TH, and / or TA ≤ TDE, the step shown in S603 may be executed; or when TA ≥ TH, and / or TA > TDE, the step shown in S604 may be executed.

[0082] S603. Judge whether the duration T1 during which TA is less than TH > TS1, and / or the duration T2 during which TA is less than or equal to TDE > TS1.

[0083] Wherein, when it is determined that the duration T1 during which TA is less than TH > TS1, and / or the duration T2 during which TA is less than or equal to TDE > TS1, the step shown in S605 may be executed. Alternatively, when it is determined that the duration T1 during which TA is less than TH ≤ TS1; and / or the duration T2 during which TA is less than or equal to TDE ≤ TS1, the step shown in S604 may be executed.

[0084] S604. Determine that anti-condensation control is not required, and end this detection.

[0085] It can be understood that, after a period of time after ending this anti-condensation detection, the execution may be performed periodically Figure 6A corresponding implementation allows for periodic testing of anti-condensation mechanisms. For example, this testing can be performed periodically after a duration equal to 5 minutes following the end of the current test. Figure 6 Corresponding implementation examples.

[0086] S605. If it is determined that anti-condensation control is required, determine whether the compressor is running.

[0087] When the compressor is detected to be operating normally, the steps shown in S605 can be continued to continuously monitor the compressor's operating status; or, when the compressor is detected to be stopped, the cooling fan remains on, and the steps shown in S606 can be executed.

[0088] S606. Determine whether TA≥TH and / or TA>TDE.

[0089] When TA≥TH and / or TA>TDE, the step shown in S607 can be performed; or when TA<TH and / or TA≤TDE, the step shown in S606 can be performed to continuously detect the relationship between TA and TH, TDE.

[0090] S607. Determine whether TA is greater than or equal to the duration of TH, T3 > TS2, and / or whether TA is greater than the duration of TDE, T4 > TS1.

[0091] Specifically, when TA is greater than or equal to the duration T3 of TH > TS2, and / or TA is greater than the duration T4 of TDE > TS1, the step shown in S608 can be executed. Alternatively, when TA is greater than or equal to the duration T3 of TH ≤ TS2, and / or TA is greater than the duration T4 of TDE ≤ TS2, the step shown in S607 can continue to be executed to continuously detect the relationship between T3 and TS1, TS3.

[0092] S608, turn off the cooling fan and electric heating components.

[0093] Based on this, when the compressor stops running and there is a risk of condensation in the control box, anti-condensation control can be implemented to prevent the control box from short-circuiting and burning out when condensation occurs inside the control box; then, when there is no longer a risk of condensation in the control box, the cooling fan and electrical control components can be shut down.

[0094] In this application, the air conditioner can be a household air conditioner or a commercial air conditioner.

[0095] Based on the above embodiments, Figure 7 This is a structural schematic diagram of an air conditioner 700 provided in an embodiment of this application. Figure 7 As shown, the air conditioner 700 includes a processor 701 and a memory 702.

[0096] In a possible implementation, the air conditioner includes: a memory, a processor, a compressor, and an electrical control box; a heat exchanger is connected to the air conditioner's refrigerant system, and the heat exchanger cools the electrical control box through a phase change in the refrigerant. The electrical control box has an internal space for housing the electrical control components, the heat exchanger, a cooling fan, and an electric heating element located behind the cooling fan. The heat exchanger cools the electrical control box through the refrigerant's phase change, and the electric heating element and the cooling fan control the electrical control box to prevent condensation.

[0097] The memory 702 stores a computer program; the processor 701 executes the computer program stored in the memory to implement the anti-condensation control method in the above method embodiments.

[0098] In this embodiment, the memory 702 and the processor 701 are electrically connected directly or indirectly to achieve data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines, such as bus 703. The memory 702 stores computer execution instructions that implement data access control methods, including at least one software functional module that can be stored in the memory in the form of software or firmware. The processor 701 executes various functional applications and data processing by running the software program and module stored in the memory.

[0099] The memory 702 may be, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), etc. The memory stores programs, which are then executed by the processor upon receiving execution instructions. Furthermore, the software programs and modules within the memory may include an operating system, which may include various software components and / or drivers for managing system tasks (e.g., memory management, storage device control, power management), and can communicate with various hardware or software components to provide an operating environment for other software components.

[0100] The processor 701 can be an integrated circuit chip with signal processing capabilities. The processor 701 described above can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor.

[0101] It should be noted that the air conditioner provided in this embodiment can be used to implement the above-mentioned anti-condensation control method, and its implementation method and technical effect are similar, so it will not be described again here.

[0102] The steps of the method disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0103] This application also provides an anti-condensation control device. For example, Figure 8 This is a schematic diagram of the structure of an anti-condensation control device 800 provided in an embodiment of this application, as shown below. Figure 8 As shown, the anti-condensation control device 800 may include: an acquisition module 801 and a processing module 802.

[0104] This application provides an anti-condensation control device 800, including an acquisition module 801 and a processing module 802. The acquisition module 801 is used to acquire the internal temperature of the electrical control box and the first ambient temperature outside the electrical control box. The processing module 802 is used to determine whether there is a risk of condensation in the electrical control box based on the first ambient temperature and the internal temperature. The processing module 802 is also used to perform anti-condensation control on the electrical control box when it is detected that the compressor has stopped running and there is a risk of condensation in the electrical control box.

[0105] Furthermore, the processing module 802 is specifically used to: determine that there is a risk of condensation in the electrical control box when the internal temperature is lower than the first ambient temperature; and determine that there is no risk of condensation in the electrical control box when the internal temperature is greater than or equal to the first ambient temperature.

[0106] Furthermore, the air conditioner includes: a temperature sensor disposed on the outside of the control box, and a temperature and humidity sensor. The first ambient temperature is the temperature collected by the temperature sensor. The acquisition module 801 is specifically used to: acquire the second ambient temperature outside the control box and the relative humidity outside the control box; the processing module 802 is specifically used to: determine the dew point temperature outside the control box based on the second ambient temperature and the relative humidity; the processing module 802 is also specifically used to: determine whether there is a risk of condensation in the control box based on the first ambient temperature, the internal temperature and the dew point temperature.

[0107] Furthermore, the processing module 802 is specifically used to: determine that there is a risk of condensation in the electrical control box when the internal temperature is less than the first ambient temperature and / or the internal temperature is less than or equal to the dew point temperature; and determine that there is no risk of condensation in the electrical control box when the internal temperature is greater than or equal to the first ambient temperature and / or the internal temperature is greater than the dew point temperature.

[0108] Furthermore, the processing module 802 is specifically used to: determine that there is a risk of condensation in the electrical control box when the duration of the internal temperature being lower than the first ambient temperature is greater than a first duration, and / or the duration of the internal temperature being less than or equal to the dew point temperature is greater than a second duration.

[0109] Furthermore, the processing module 802 is also used to: determine that there is no risk of condensation in the electrical control box when the duration of the internal temperature being lower than the first ambient temperature is less than or equal to the first duration, and / or when the duration of the internal temperature being lower than or equal to the dew point temperature is less than or equal to the second duration.

[0110] Furthermore, the electrical control box includes: a cooling fan, an electric heating element installed behind the cooling fan, and a processing module 802, specifically used to: use the electric heating element and the cooling fan to control the electrical control box against condensation.

[0111] Furthermore, the processing module 802 is also used to: stop the anti-condensation control when the duration of the internal temperature being greater than or equal to the first ambient temperature is greater than the third duration, and / or when the duration of the internal temperature being greater than the dew point temperature is greater than the fourth duration.

[0112] Furthermore, the electrical control box includes: an internal temperature that is the outlet air temperature of the heat exchanger, and / or an internal temperature that is the surface temperature of the electrical control components.

[0113] Furthermore, the heat exchanger can be an evaporator.

[0114] Furthermore, the evaporator inlet is connected to the outlet pipe of the outdoor unit heat exchanger, and the evaporator outlet is connected to the compressor return port or the inlet of the gas-liquid separator.

[0115] Furthermore, the electrical control box is a sealed electrical control box.

[0116] In some optional embodiments, the anti-condensation control device 800 may further include a storage module for storing data and / or instructions. The anti-condensation control device provided in this embodiment (such as the acquisition module 801 and processing module 802 mentioned above) can be used to read the data and instructions in the storage module to implement the above-mentioned anti-condensation control method. The implementation method and technical effect are similar, and will not be described again in this embodiment.

[0117] It should be noted that the acquisition module 801 in the above embodiments can actually be a receiver used to receive information sent by other devices or measurement units. The acquisition module 801 can be implemented through a communication port.

[0118] In some alternative implementations, the processing module 802 can be implemented in software via a processing element or in hardware. For example, the processing module 802 can be a separately established processing element or integrated into a chip of the anti-condensation control device. Alternatively, it can be stored as program code in the storage module of the anti-condensation control device 800, for use by a processing element of the anti-condensation control device 800 to call and execute some or all of the functions of the processing module 802.

[0119] Furthermore, all or part of these processing elements can be integrated together or implemented independently. The module here can be an integrated circuit with signal processing capabilities. During implementation, each step of the above method or each of the above modules can be completed through integrated logic circuits in the hardware of the processor element or through software instructions.

[0120] For example, these modules can be one or more integrated circuits configured to implement the above-described anti-condensation control methods. Examples include one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs). Furthermore, when a module is implemented using processing element scheduler code, the processing element can be the same processor, such as a central processing unit (CPU) or other processor capable of calling program code. Additionally, these modules can be integrated together as a system-on-a-chip.

[0121] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the methods of any of the above embodiments.

[0122] The methods described in the above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. Computer-readable media can include computer storage media and communication media, and can also include any medium capable of transferring a computer program from one place to another. Storage media can be any target medium accessible by a computer.

[0123] As one possible design, computer-readable media may include compact disc read-only memory (CD-ROM), RAM, ROM, EEPROM, or other optical disc storage; computer-readable media may include disk storage or other disk storage devices. Furthermore, any connecting cable may also be appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of media. As used herein, disks and optical discs include optical discs (CD), laser discs, optical discs, digital versatile discs (DVD), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, while optical discs optically reproduce data using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0124] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0125] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0126] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0127] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0128] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for controlling condensation, characterized in that, The method is used in an air conditioner, which includes a compressor and an electrical control box. The electrical control box has an internal storage space for housing electrical control components and a heat exchanger. The electrical control components include an electrical control main board. The heat exchanger is connected to the refrigerant system of the air conditioner. The heat exchanger cools the electrical control box through a phase change of the refrigerant. The electrical control box includes a cooling fan, and an electric heating element is installed behind the cooling fan. The method includes: The internal temperature of the electrical control box and the first ambient temperature outside the electrical control box are obtained. Based on the first ambient temperature and the internal temperature, determine whether there is a risk of condensation in the electrical control box; When it is detected that the compressor has stopped running and there is a risk of condensation in the electrical control box, anti-condensation control is implemented on the electrical control box; The method of preventing condensation in the electrical control box includes: using a cooling fan to continuously blow air and electric heating components to heat the box, so that the cooling fan can blow hot air to various positions of the electrical control box to prevent condensation. Wherein, the internal temperature is the outlet air temperature of the heat exchanger, and / or the internal temperature is the surface temperature of the electronic control component; When the internal temperature is the outlet air temperature of the heat exchanger, and the airflow in the control box flows counterclockwise, the sensor for measuring the internal temperature is located on the upper side of the heat exchanger; or, when the internal temperature is the outlet air temperature of the heat exchanger, and the airflow in the control box flows clockwise, the sensor for measuring the internal temperature is located on the lower side of the heat exchanger. When the internal temperature is the same as the surface temperature of the electronic control components, and the airflow inside the electronic control box flows counterclockwise, the sensor for measuring the internal temperature is located on the main board of the electronic control system near the heat exchanger; or, when the internal temperature is the same as the surface temperature of the electronic control components, and the airflow inside the electronic control box flows clockwise, the sensor for measuring the internal temperature is located on the main board of the electronic control system away from the heat exchanger.

2. The method according to claim 1, characterized in that, The step of determining whether the electrical control box has a condensation risk based on the first ambient temperature and the internal temperature includes: When the internal temperature is lower than the first ambient temperature, it is determined that the electrical control box is at risk of condensation. When the internal temperature is greater than or equal to the first ambient temperature, it is determined that there is no risk of condensation in the electrical control box.

3. The method according to claim 2, characterized in that, The air conditioner includes: a temperature sensor disposed on the outside of the electrical control box, and a temperature and humidity sensor, wherein the first ambient temperature is the temperature collected by the temperature sensor; The step of determining whether the electrical control box has a condensation risk based on the first ambient temperature and the internal temperature includes: The second ambient temperature and relative humidity outside the electrical control box are obtained; the second ambient temperature is collected by the temperature and humidity sensor. The dew point temperature outside the electrical control box is determined based on the second ambient temperature and the relative humidity. Based on the first ambient temperature, the internal temperature, and the dew point temperature, determine whether there is a risk of condensation in the electrical control box.

4. The method according to claim 3, characterized in that, The step of determining whether the electrical control box has a condensation risk based on the first ambient temperature, the internal temperature, and the dew point temperature includes: When the internal temperature is lower than the first ambient temperature, and / or the internal temperature is less than or equal to the dew point temperature, it is determined that the electrical control box has a risk of condensation. When the internal temperature is greater than or equal to the first ambient temperature, and / or the internal temperature is greater than the dew point temperature, it is determined that there is no risk of condensation in the electrical control box.

5. The method according to claim 4, characterized in that, The determination that the electrical control box has a condensation risk when the internal temperature is lower than the first ambient temperature and / or the internal temperature is lower than or equal to the dew point temperature includes: When the duration for which the internal temperature is lower than the first ambient temperature is greater than a first duration, and / or when the duration for which the internal temperature is lower than or equal to the dew point temperature is greater than a second duration, it is determined that the electrical control box has a risk of condensation.

6. The method according to claim 5, characterized in that, The method further includes: When the duration for which the internal temperature is lower than the first ambient temperature is less than or equal to the first duration, and / or when the duration for which the internal temperature is lower than or equal to the dew point temperature is less than or equal to the second duration, it is determined that there is no risk of condensation in the electrical control box.

7. The method according to claim 1, characterized in that, The method further includes: When the duration for which the internal temperature is greater than or equal to the first ambient temperature exceeds a third duration, and / or when the duration for which the internal temperature is greater than the dew point temperature exceeds a fourth duration, the anti-condensation control is stopped.

8. The method according to any one of claims 1-7, characterized in that, The heat exchanger is an evaporator.

9. The method according to claim 8, characterized in that, The inlet of the evaporator is connected to the outlet pipe of the outdoor unit heat exchanger, and the outlet of the evaporator is connected to the return port of the compressor or the inlet of the gas-liquid separator.

10. The method according to any one of claims 1-7, or 9, characterized in that, The electrical control box is a sealed electrical control box.

11. A control device for preventing condensation, characterized in that, This device is used to control the anti-condensation of the electrical control box in an air conditioner. The air conditioner includes a compressor and an electrical control box. The electrical control box has an internal storage space for housing electrical control components and a heat exchanger. The electrical control components include an electrical control main board. The heat exchanger is connected to the refrigerant system of the air conditioner. The heat exchanger cools the electrical control box through the phase change of the refrigerant. The electrical control box includes a cooling fan, and an electric heating element is installed behind the cooling fan. The device includes: an acquisition module and a processing module; The acquisition module is used to acquire the internal temperature of the electrical control box and the first ambient temperature outside the electrical control box. The processing module is used to determine whether there is a risk of condensation in the electrical control box based on the first ambient temperature and the internal temperature. The processing module is also used to perform anti-condensation control on the electrical control box when it is detected that the compressor has stopped running and there is a risk of condensation in the electrical control box; The method of preventing condensation in the electrical control box includes: using a cooling fan to continuously blow air and electric heating components to heat the box, so that the cooling fan can blow hot air to various positions of the electrical control box to prevent condensation. Wherein, the internal temperature is the outlet air temperature of the heat exchanger, and / or the internal temperature is the surface temperature of the electronic control component; When the internal temperature is the outlet air temperature of the heat exchanger, and the airflow in the control box flows counterclockwise, the sensor for measuring the internal temperature is located on the upper side of the heat exchanger; or, when the internal temperature is the outlet air temperature of the heat exchanger, and the airflow in the control box flows clockwise, the sensor for measuring the internal temperature is located on the lower side of the heat exchanger. When the internal temperature is the same as the surface temperature of the electronic control components, and the airflow inside the electronic control box flows counterclockwise, the sensor for measuring the internal temperature is located on the main board of the electronic control system near the heat exchanger; or, when the internal temperature is the same as the surface temperature of the electronic control components, and the airflow inside the electronic control box flows clockwise, the sensor for measuring the internal temperature is located on the main board of the electronic control system away from the heat exchanger.

12. An electrical control box, characterized in that, The electrical control box has an internal storage space for housing electrical control components, a heat exchanger, a cooling fan, and an electric heating component located behind the cooling fan. The heat exchanger cools the electrical control box through a phase change of the refrigerant, and the electric heating component and the cooling fan control the electrical control box to prevent condensation. The anti-condensation control of the electrical control box is based on the internal temperature of the electrical control box. The anti-condensation control of the electrical control box includes: using a cooling fan to continuously blow air and electric heating components to heat the box, so that the cooling fan can blow hot air to various parts of the electrical control box to prevent condensation. Wherein, the internal temperature is the outlet air temperature of the heat exchanger, and / or the internal temperature is the surface temperature of the electronic control component; When the internal temperature is the outlet air temperature of the heat exchanger, and the airflow in the control box flows counterclockwise, the sensor for measuring the internal temperature is located on the upper side of the heat exchanger; or, when the internal temperature is the outlet air temperature of the heat exchanger, and the airflow in the control box flows clockwise, the sensor for measuring the internal temperature is located on the lower side of the heat exchanger. When the internal temperature is the same as the surface temperature of the electronic control components, and the airflow inside the electronic control box flows counterclockwise, the sensor for measuring the internal temperature is located on the main board of the electronic control system near the heat exchanger; or, when the internal temperature is the same as the surface temperature of the electronic control components, and the airflow inside the electronic control box flows clockwise, the sensor for measuring the internal temperature is located on the main board of the electronic control system away from the heat exchanger.

13. An air conditioner, characterized in that, include: The device includes a memory, a processor, a compressor, and an electronic control box as described in claim 12; the heat exchanger is connected to the refrigerant system of the air conditioner, and the heat exchanger cools the electronic control box through a phase change of the refrigerant. The memory stores computer programs; When the processor executes the computer program, it is used to perform anti-condensation control on the electrical control box using the anti-condensation control method according to any one of claims 1-10.

14. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the method as described in any one of claims 1-10.

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