Anti-condensation control method for air conditioner

Abstract

The invention relates to the technical field of air conditioners, particularly provides an anti-condensation control method for an air conditioner, and aims at solving the problems that an existing anti-condensation method is high in cost and poor in user experience. In order to achieve the purpose, according to the anti-condensation control method for the air conditioner, the fan rotating speed, the outdoor environment temperature and the indoor environment temperature serve as the judgment basis for the air conditioner to enter the anti-condensation mode, so that whether the air conditioner enters the anti-condensation mode or not is controlled, and condensation is prevented. By means of the mode, the accuracy of the judgment result and the anti-condensation effect are improved, the structure of the air conditioner is simplified, the cost of the air conditioner is reduced, and the problem that in the prior art, due to the fact that structural heat preservation cotton is used, the cost of the air conditioner is high is solved. In addition, the control method can further improve the use experience of the user, and the problem that the user experience is poor due to the fact that the air outlet temperature is increased is solved.

Description

Technical Field

[0001] The present invention relates to the field of air conditioners, and particularly provides an anti-condensation control method for an air conditioner. Background Art

[0002] With the popularization of air conditioners in people's lives, when operating in high-temperature and high-humidity application scenarios, the problem of condensation easily occurring at the air outlet of the indoor unit of the air conditioner has gradually become prominent. This phenomenon not only has a negative impact on the service life of the air conditioner, but also affects the user experience.

[0003] In response to the above problems, on the one hand, the existing technical solutions add a structural heat-insulating cotton to the air conditioner, which can adsorb the condensed water generated during operation and ensure no condensation occurs during heat and cold exchange. On the other hand, by increasing the air outlet temperature and reducing the dew point temperature in the air, the occurrence of condensation is reduced. Although the above methods prevent the generation of condensation to a certain extent, adding structural heat-insulating cotton not only increases the manufacturing cost, but also has a risk of falling off after long-term use. And the method of increasing the air outlet temperature usually involves increasing the set temperature of the air conditioner, which is premised on sacrificing the user experience. This not only affects the refrigeration effect of the air conditioner, but also greatly affects the user experience.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] In order to solve at least one problem in the prior art, that is, to solve the problems of high cost and poor user experience of the existing anti-condensation methods, the present application provides an anti-condensation control method for an air conditioner, and the anti-condensation control method includes:

[0006] During the operation of the refrigeration mode or the dehumidification mode, obtain the fan speed V of the indoor unit a of the outdoor ambient temperature T A and the indoor ambient temperature T a ;

[0007] Compare the fan speed V a with the first preset speed V1, the outdoor ambient temperature T A with the first outdoor preset temperature T0, and the indoor ambient temperature T a with the first indoor preset temperature T1 respectively;

[0008] Based on the comparison results, selectively control the air conditioner to enter the anti-condensation mode.

[0009] In the preferred technical solution of the above anti-condensation control method, the step of "based on the comparison results, selectively control the air conditioner to enter the anti-condensation mode" further includes:

[0010] When V a ≤ V1, T A ≥ T0 and T a ≤ T1, control the air conditioner to enter the anti-condensation mode.

[0011] In a preferred technical solution of the above anti-condensation control method, the step of "controlling the air conditioner to enter the anti-condensation mode" further includes:

[0012] Reduce the opening degree of the throttling element and increase the opening degree of the air deflector at the same time.

[0013] In a preferred technical solution of the above anti-condensation control method, the step of "reducing the opening degree of the throttling element" further includes:

[0014] Control the opening degree of the throttling element to decrease at a preset valve closing speed.

[0015] In a preferred technical solution of the above anti-condensation control method, simultaneously with or after "reducing the opening degree of the throttling element", the control method further includes:

[0016] Obtain the current opening degree K of the throttling element d1 , and / or the gas temperature T in the pipeline between the outlet side of the evaporator and the outdoor unit C1 ;

[0017] Compare the size of the current opening degree K d1 with the preset opening degree K d0 , and / or the size of the gas temperature T C1 with the preset gas temperature T C0 ;

[0018] When K d1 ≤ K d0 , and / or T C1 ≥ T C0 , then control the throttling element to stop closing the valve.

[0019] In a preferred technical solution of the above anti-condensation control method, the step of "increasing the opening degree of the air deflector" further includes:

[0020] Adjust the air deflector to the maximum air outlet position.

[0021] In a preferred technical solution of the above anti-condensation control method, after the step of "controlling the air conditioner to enter the anti-condensation mode", it further includes:

[0022] After the air conditioner lasts for a first set time in the anti-condensation mode, obtain the fan speed V again a , the outdoor ambient temperature T A and / or the indoor ambient temperature Ta ;

[0023] Compare the rotational speed V of the blower a with the second preset rotational speed V2, the outdoor ambient temperature T A with the second preset outdoor temperature T2, and / or the indoor ambient temperature T a with the second preset indoor temperature T3;

[0024] Based on the comparison result, selectively control the air conditioner to exit the anti-condensation mode;

[0025] wherein, V2 > V1, T2 < T0, T3 > T1.

[0026] In a preferred technical solution of the above anti-condensation control method, the anti-condensation control method further includes:

[0027] When V a ≥ V2, T A ≤ T2, and T a ≥ T3 are satisfied at least one, control the air conditioner to exit the anti-condensation mode, and control the air conditioner to execute the original operation mode.

[0028] In a preferred technical solution of the above anti-condensation control method, the step of "selectively controlling the air conditioner to enter the anti-condensation mode based on the comparison result" further includes:

[0029] When V a > V1, T A < T0, and T a > T1 are satisfied at least one, control the air conditioner to maintain the current operation mode.

[0030] In a preferred technical solution of the above anti-condensation control method, after the step of "controlling the air conditioner to enter the anti-condensation mode", it further includes:

[0031] When the air conditioner shuts down, or the air conditioner enters the heating mode, control the air conditioner to exit the anti-condensation mode.

[0032] Those skilled in the art can understand that the anti-condensation control method for an air conditioner in the present application obtains the fan speed, outdoor ambient temperature, and indoor ambient temperature in the cooling mode or dehumidification mode, compares the fan speed with a first preset speed, the outdoor ambient temperature with a first preset outdoor temperature, and the indoor ambient temperature with a first preset indoor temperature, and controls whether the air conditioner enters the anti-condensation mode based on the comparison results to prevent condensation. Additionally, the present application uses the fan speed, outdoor ambient temperature, and indoor ambient temperature as the judgment basis for the air conditioner to enter the anti-condensation mode to control whether the air conditioner enters the anti-condensation mode to prevent condensation. This method not only improves the accuracy of the judgment result and the anti-condensation effect but also simplifies the structure of the air conditioner, reduces the cost of the air conditioner, and solves the problem of high cost of the air conditioner due to the use of structural thermal insulation cotton in the prior art. Moreover, the control method of the present application can also improve the user experience and solve the problem of poor user experience caused by increasing the air outlet temperature.

[0033] Furthermore, by controlling the air conditioner to enter the anti-condensation mode when the fan speed is less than or equal to the first preset speed, the outdoor ambient temperature is greater than or equal to the first preset outdoor temperature, and the indoor ambient temperature is less than or equal to the first preset indoor temperature, condensation can be prevented and the user experience can be improved.

[0034] Furthermore, when the air conditioner enters the anti-condensation mode, simultaneously reducing the opening degree of the throttling element and increasing the opening degree of the air deflector can reduce the temperature of the evaporator surface, thereby reducing the temperature difference between the evaporator and the indoor environment, and thus avoiding the generation of condensation, providing a more stable and comfortable user experience for the user.

[0035] Furthermore, while the opening degree of the throttling element is reduced at a preset valve closing speed, obtain the current opening degree of the throttling element and / or the gas temperature in the pipeline, compare the current opening degree with the preset opening degree, and / or compare the gas temperature with the preset gas temperature, and when the current opening degree is less than or equal to the preset opening degree, and / or the gas temperature is greater than or equal to the preset gas temperature, control the throttling element to maintain the current opening degree, which helps to prevent the air conditioner from being unable to meet the cooling or dehumidification requirements due to too small an opening degree of the throttling element, affecting the user experience.

[0036] Furthermore, when the air conditioner is in the anti-condensation mode, by adjusting the air deflector to the maximum air outlet position, condensation on the surface of the air deflector can be avoided, enhancing the user experience.

[0037] Further, after the air conditioner enters the anti-condensation mode, the fan speed, the outdoor ambient temperature, and / or the indoor ambient temperature are acquired again, and the magnitude of the fan speed and a second preset speed, the magnitude of the indoor ambient temperature and a second indoor preset temperature, and / or the magnitude of the outdoor ambient temperature and a second outdoor preset temperature are compared to control whether the air conditioner exits the anti-condensation mode, so that the air conditioner can adjust the operation mode in a timely manner according to the environmental conditions, providing better comfort and energy efficiency and enhancing the user experience.

[0038] Further, when the fan speed is greater than or equal to the second preset speed, the outdoor ambient temperature is less than or equal to the second outdoor preset temperature, and / or the indoor ambient temperature is greater than or equal to the second indoor preset temperature, the air conditioner is controlled to exit the anti-condensation mode, and the air conditioner is controlled to operate according to the original operation mode, which can better meet the comfort requirements of users and improve the user experience.

[0039] Further, when the air conditioner stops or enters the heating mode, controlling the air conditioner to exit the anti-condensation mode helps to reduce unnecessary energy consumption. Description of the Drawings

[0040] The preferred embodiments of the present invention will be described below with reference to the drawings, in which:

[0041] Figure 1 is a flowchart of the anti-condensation control method for an air conditioner in the present application;

[0042] Figure 2 is a logic diagram of a possible implementation manner of the control method of the anti-condensation control method for an air conditioner in the present application. Detailed Embodiments

[0043] The preferred embodiments of the present application will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present application and are not intended to limit the protection scope of the present application.

[0044] It should be noted that in the description of the present application, terms such as "upper", "lower", "inner", "bottom", "end", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0045] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and defined, the terms "set", "connected", and "communicated" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] First, in combination with Figure 1 , the anti-condensation control method for an air conditioner in this application will be introduced. Among them, Figure 1 is the flowchart of the anti-condensation control method for an air conditioner in this application.

[0047] The anti-condensation control method for an air conditioner in this application includes:

[0048] S101. During the operation in the cooling mode or the dehumidifying mode, obtain the fan speed V of the indoor unit a , the outdoor ambient temperature T A and the indoor ambient temperature T a ; For example, the air conditioner can be configured with a speed sensor for obtaining the fan speed, a first temperature sensor for obtaining the outdoor ambient temperature, and a second temperature sensor for obtaining the indoor ambient temperature, and detect the fan speed V of the indoor unit through the speed sensor, the first temperature sensor, and the second temperature sensor a , the outdoor ambient temperature T A and the indoor ambient temperature T a .

[0049] S102. Compare the magnitudes of the fan speed V a and the first preset speed V1, the magnitudes of the outdoor ambient temperature T A and the first outdoor preset temperature T0, and the magnitudes of the indoor ambient temperature T a and the first indoor preset temperature T1 respectively; For example, after detecting the fan speed, the outdoor ambient temperature, and the indoor ambient temperature, compare the magnitudes of the two by comparing whether the fan speed is greater than 0 or the ratio between the two is greater than 1 with the first preset speed, and the magnitudes of the outdoor ambient temperature and the first outdoor preset temperature and the magnitudes of the indoor ambient temperature and the first indoor preset temperature can be compared by the above method.

[0050] S103. Selectively control the air conditioner to enter the anti-condensation mode based on the comparison result. When the fan speed is less than or equal to the first preset speed, the outdoor ambient temperature is greater than or equal to the first outdoor preset temperature, and the indoor ambient temperature is less than or equal to the first indoor preset temperature, the air conditioner can be controlled to enter the anti-condensation mode. When the fan speed is greater than the first preset speed, the outdoor ambient temperature is less than the first outdoor preset temperature, and the indoor ambient temperature is greater than the first indoor preset temperature, the air conditioner is controlled to maintain the current operating mode.

[0051] In this application, the fan speed, outdoor ambient temperature, and indoor ambient temperature are obtained in the cooling mode or dehumidifying mode, and the fan speed is compared with the first preset speed, the outdoor ambient temperature is compared with the first outdoor preset temperature, and the indoor ambient temperature is compared with the first indoor preset temperature to control whether the air conditioner enters the anti-condensation mode to prevent condensation. In addition, this application uses the fan speed, outdoor ambient temperature, and indoor ambient temperature as the judgment basis for the air conditioner to enter the anti-condensation mode, which not only improves the accuracy of the judgment result and the anti-condensation effect, but also simplifies the structure of the air conditioner, reduces the cost of the air conditioner, improves the user experience, and solves the problem of poor user experience caused by increasing the outlet air temperature.

[0052] The preferred implementation of the anti-condensation control method of this application is introduced below.

[0053] In one implementation, the step of "selectively control the air conditioner to enter the anti-condensation mode based on the comparison result" further includes:

[0054] When V a ≤ V1, T A ≥ T0 and T a ≤ T1, the air conditioner is controlled to enter the anti-condensation mode.

[0055] For example, taking V1 = 1000 r / min, T0 = 30 °C, and T1 = 23 °C as an example for illustration. V a ≤ 1000 r / min indicates that the fan speed at the outlet of the indoor unit is low. When the air conditioner is in the cooling or dehumidifying mode, a low fan speed means a low air outlet speed, and condensation is likely to occur. T A ≥ 30 °C, T a ≤ 23 °C indicates that the outdoor ambient temperature is high, the indoor ambient temperature is low, and the temperature difference between indoors and outdoors is large, making condensation likely to occur. Therefore, V a ≤ 1000 r / min, T A ≥ 30 °C and T a ≤ 23 °C are likely to cause condensation, meeting the conditions for the air conditioner to enter the anti-condensation mode. Based on this, the air conditioner is controlled to enter the anti-condensation mode to prevent condensation.

[0056] It should be noted that the air outlet speed of the indoor unit is generated by the fan. Therefore, the rotational speed of the fan determines the air outlet speed of the air conditioner, and is positively correlated with the air outlet speed. So, the air outlet speed of the indoor unit can also be represented by the rotational speed of the fan. For example, taking V1 = 5m / s, T0 = 30°C, and T1 = 23°C as examples for illustration. V a ≤5m / s indicates a low air outlet speed. When the air conditioner is in the cooling or dehumidifying mode and the air outlet speed is low, condensation is likely to occur. T A ≥30°C, T a ≤23°C indicates that the outdoor ambient temperature is high, the indoor ambient temperature is low, and the temperature difference between indoor and outdoor is large, making condensation likely to occur. Therefore, V a ≤5m / s, T A ≥30°C and T a ≤23°C, condensation is likely to occur, meeting the conditions for the air conditioner to enter the anti-condensation mode. Based on this, the air conditioner can also be controlled to enter the anti-condensation mode to prevent condensation.

[0057] In one implementation, the step of "controlling the air conditioner to enter the anti-condensation mode" further includes:

[0058] Reducing the opening degree of the throttling element and simultaneously increasing the opening degree of the air deflector.

[0059] It should be noted that when the air conditioner enters the anti-condensation stage, by reducing the opening degree of the throttling element on the inlet side of the evaporator, the amount of refrigerant entering the evaporator can be reduced, thereby reducing the temperature difference between indoor and outdoor and reducing the possibility of condensation. Increasing the opening degree of the air deflector can increase the air volume and reduce the humidity saturation in the indoor air, thereby reducing the risk of condensation. Therefore, in the anti-condensation mode, by reducing the opening degree of the throttling element on the inlet side of the evaporator and simultaneously increasing the opening degree of the air deflector, condensation can be prevented.

[0060] Furthermore, after the air conditioner enters the anti-condensation mode, the opening degree of the throttling element can also be adjusted only, or the opening degree of the air deflector can be adjusted only. Although only reducing the opening degree of the throttling element or only increasing the opening degree of the air deflector can also prevent condensation, the anti-condensation effect is worse than adjusting the opening degrees of the throttling element and the air deflector simultaneously.

[0061] It should also be noted that there is no limitation on the throttling element in this application, as long as the opening degree of the throttling element is controllable. For example, the throttling element can be an electronic expansion valve or a solenoid valve with a controllable opening degree, etc. The following content will be described taking the electronic expansion valve as an example.

[0062] Specifically, the step of "reducing the opening degree of the throttling element" further includes:

[0063] Controlling the opening degree of the throttling element to decrease at a preset valve closing speed.

[0064] For example, taking the total number of steps of the electronic expansion valve as 480 steps, the initial opening degree as 300 steps, the time as 10 s, and the preset valve closing speed as 5 steps / s as an example for illustration. The electronic expansion valve reduces its opening degree at a speed of 5 steps / s based on the initial opening degree. The electronic expansion valve operates for 10 s, and the reduced opening degree is 50 steps. At this time, the opening degree of the electronic expansion valve is 250 steps.

[0065] It should be noted that in addition to reducing at the preset valve closing speed, the electronic expansion valve can also adopt other methods to reduce the opening degree of the electronic expansion valve. For example, the method of reducing the opening degree of the electronic expansion valve can also be a timing method or a condition judgment method, etc. Among them, the timing method is specifically that the opening degree of the electronic expansion valve is reduced once every set time. For example, every 10 s, the opening degree of the electronic expansion valve is reduced by 10 steps. The condition judgment method is specifically that the fan speed V a , the outdoor ambient temperature T A , and the indoor ambient temperature T a are obtained every set time, and it is judged whether the fan speed V a , the outdoor ambient temperature T A , and the indoor ambient temperature T a meet the conditions for entering the anti-condensation mode. When the conditions for the anti-condensation mode are met, the opening degree of the electronic expansion valve is reduced once. For example, every 1 min, it is judged whether the obtained fan speed V a , the outdoor ambient temperature T A , and the indoor ambient temperature T a meet the conditions for the anti-condensation mode. If they are met, the opening degree of the electronic expansion valve is reduced by 10 steps.

[0066] Further, simultaneously with or after "reducing the opening degree of the throttling element", the control method further includes:

[0067] Obtaining the current opening degree K d1 of the throttling element, and / or the gas temperature T C1 in the pipeline between the outlet side of the evaporator and the outdoor unit;

[0068] Comparing the size of the current opening degree K d1 with the preset opening degree K d0 , and / or the size of the gas temperature T C1 with the preset gas temperature T C0 ;

[0069] When the current opening degree K d1 is less than or equal to the preset opening degree K d0 , and / or the gas temperature T C1 is greater than or equal to the preset gas temperature T C0 , then control the throttling element to stop closing the valve.

[0070] It should be noted that when the air conditioner is in the anti-condensation mode, in order to avoid condensation while the air conditioner cannot meet the cooling or dehumidification requirements due to too small an opening degree of the electronic expansion valve, which affects the user experience, therefore, when controlling the opening degree of the electronic expansion valve to decrease at a preset valve closing speed, the current opening degree K of the electronic expansion valve is obtained. d1 . During the process of decreasing the opening degree of the electronic expansion valve, the refrigerant flow rate into the evaporator decreases, and the working load of the compressor will decrease, thereby reducing the working efficiency of the compressor and causing the gas temperature T C1 to rise. In order to avoid that the air conditioner cannot meet the cooling or dehumidification requirements due to the too high gas temperature T C1 .

[0071] For example, taking the preset valve closing speed of 5 steps / s, the preset opening degree K d0 of 70 steps, and the preset gas temperature T C0 of 22°C as an example for illustration. While the electronic expansion valve decreases its opening degree at 5 steps / s, the current opening degree K of the electronic expansion valve is obtained d1 , and / or the gas temperature T C1 . Compare the size of the current opening degree K d1 with the preset opening degree K d0 , and / or the size of the gas temperature T C1 with the preset gas temperature T C0 . When K d1 ≤ 70 steps, and / or T C1 ≥ 22°C, control the electronic expansion valve to stop closing the valve, and the opening degree of the solenoid valve no longer decreases, which can avoid the situation that the too small opening degree makes the air conditioner unable to meet the cooling or dehumidification requirements and affects the user experience. When K d1 > 70 steps and T C1 < 22°C, then continue to obtain the current opening degree K of the electronic expansion valve d1 , and / or the gas temperature T C1 , and so on in a loop until K d1 ≤ 70 steps, and / or T C1 ≥ 22°C. It should be noted that when K d1 > 70 steps and T C1 < 22°C, obtaining the current opening degree K d1 and / or the gas temperature T C1 in this application can be obtained once every second or shorter time to avoid the situation that the too small opening degree of the electronic expansion valve makes the air conditioner unable to meet the cooling or dehumidification requirements and affects the user experience.

[0072] Another example is that the total number of steps of the electronic expansion valve is 480 steps, the initial opening degree is 300 steps, the time is 20 s, the preset valve closing speed is 5 steps / s, the preset opening degree K d0 is 70 steps, and the preset gas temperature T C0Taking 22°C as an example for illustration. The electronic expansion valve reduces its opening degree at a rate of 5 steps / s and continuously operates for 10 s. At this moment, the gas temperature T is obtained. C1 ≥22°C. At this time, the current opening degree K of the electronic expansion valve d1 is 200 steps. Although the current opening degree K of the electronic expansion valve d1 is greater than the preset opening degree K d0 , in order to prevent the air conditioner from being unable to meet the cooling or dehumidification requirements due to the excessively high gas temperature T C1 , the opening degree of the electronic expansion valve is controlled to be maintained at 200 steps.

[0073] Another example is given. The total number of steps of the electronic expansion valve is 480 steps, the preset valve closing speed is 5 steps / s, the preset opening degree K d0 is 70 steps, and the preset gas temperature T C0 Taking 22°C as an example for illustration. The electronic expansion valve reduces its opening degree at a rate of 5 steps / s and continues for 10 s. At this time, although the obtained gas temperature T C1 <22°C, but the current opening degree K of the electronic expansion valve d1 is 70 steps, which is equal to the preset opening degree K d0 . In order to prevent the current opening degree K of the electronic expansion valve d1 from being too small to meet the cooling or dehumidification requirements, the opening degree of the electronic expansion valve is controlled to be maintained at 70 steps.

[0074] In one embodiment, the step of "increasing the opening degree of the air deflector" further includes:

[0075] Adjust the air deflector to the maximum air outlet position.

[0076] It should be noted that when the air conditioner is in the anti-condensation mode, adjusting the air deflector to the maximum air outlet position can effectively prevent condensation from forming on the air deflector and enhance the user experience.

[0077] In addition, the present application places no restrictions on the method of adjusting the air deflector to the maximum air outlet position, as long as the air deflector can be adjusted to the maximum air outlet position. For example, the air deflector can increase its opening degree in a constant speed manner, a timing manner, or a conditional judgment manner. Among them, the constant speed manner is specifically that the air deflector can increase its opening degree at a preset rotation speed. For example, the air deflector can increase its opening degree at a speed of 10° / min until the air deflector reaches the maximum air outlet position. The timing manner is specifically that the opening degree of the air deflector increases once every set time. For example, every 10 s, the opening degree of the air deflector decreases by 10°. The conditional judgment manner is specifically that the fan speed V a 、outdoor ambient temperature T A and indoor ambient temperature T a are obtained every set time, and it is judged whether the fan speed V a 、outdoor ambient temperature TA and the indoor environmental temperature T a Whether the conditions for entering the anti-condensation mode are met, and when the conditions for the anti-condensation mode are met, the opening degree of the air deflector increases once. For example, every 1 min, judge the obtained fan speed V a , the outdoor environmental temperature T A and the indoor environmental temperature T a Whether the conditions for the anti-condensation mode are met. If so, the opening degree of the air deflector increases by 10°.

[0078] In one embodiment, after the step of "controlling the air conditioner to enter the anti-condensation mode", it further includes:

[0079] After the air conditioner continues in the anti-condensation mode for the first set time, obtain the fan speed V again a , the outdoor environmental temperature T A and / or the indoor environmental temperature T a ;

[0080] Compare the fan speed V a with the magnitude of the second preset speed V2, the outdoor environmental temperature T A with the magnitude of the second outdoor preset temperature T2 and / or the indoor environmental temperature T a with the magnitude of the second indoor preset temperature T3;

[0081] Based on the comparison result, selectively control the air conditioner to exit the anti-condensation mode;

[0082] Wherein, V2 > V1, T2 < T0, T3 > T1.

[0083] It should be noted that this application has no limitation on the first set time, as long as the air conditioner can obtain the fan speed V again while in the anti-condensation mode a , the outdoor environmental temperature T A and / or the indoor environmental temperature T a That's okay. For example, the set time can be 1 min, 5 min, 10 min, etc. Moreover, the second preset speed can be the rotational speed of the fan.

[0084] By obtaining the fan speed, outdoor environmental temperature and / or indoor environmental temperature again after the air conditioner enters the anti-condensation mode, and comparing the magnitude of the fan speed with the second preset speed, the magnitude of the indoor environmental temperature with the second indoor preset temperature and / or the magnitude of the outdoor environmental temperature with the second outdoor preset temperature, to control whether the air conditioner exits the anti-condensation mode, enabling the air conditioner to adjust the operating mode in a timely manner according to environmental conditions, so as to provide better comfort and energy efficiency and enhance the user experience.

[0085] Specifically, the anti-condensation control method further includes:

[0086] When V a ≥ V2, T A ≤ T2 and T a ≥ T3 is satisfied at least one time, then control the air conditioner to exit the anti-condensation mode, and control the air conditioner to execute the original operation mode.

[0087] It should be noted that the original operation mode not only includes the operation mode before the air conditioner enters the anti-condensation mode, but also includes the opening degree of the electronic expansion valve in the original operation mode, etc. For example, when the operation mode before the air conditioner enters the anti-condensation mode is the cooling mode, the opening degree of the electronic expansion valve in the cooling mode is 200 steps. When the air conditioner enters the anti-condensation mode, the opening degree of the electronic expansion valve is 70 steps. When the air conditioner exits the anti-condensation mode, the air conditioner executes the cooling mode, and the opening degree of the electronic expansion valve is adjusted to 200 steps.

[0088] It should also be noted that after the air conditioner exits the anti-condensation mode and executes the original operation mode, it can cycle according to the second set time until the air conditioner meets the conditions of the anti-condensation mode. Among them, this application has no limit on the second set time, which can be the same as or different from the first set time. For example, the second set time can be 5 min, 10 min, etc.

[0089] For example, taking V1 = 1200 r / min, T2 = 28 °C, T3 = 26 °C, the first set time is 10 min, and the second set time is 5 min as an example for illustration. After the air conditioner continuously operates in the anti-condensation mode for 10 min, obtain the fan speed V a , the outdoor ambient temperature T A and / or the indoor ambient temperature T a . When V a ≥ 1200 r / min, it indicates that the fan speed is high, and a low fan speed means a high air outlet speed at the indoor unit air outlet, and a high air outlet speed can reduce the humidity saturation in the indoor air, thereby reducing the risk of condensation. T A ≤ 28 °C indicates that the outdoor ambient temperature is low, which can reduce the temperature difference with the indoor, and avoid the generation of condensation. T a ≥ 26 °C indicates that the indoor ambient temperature is high, which can reduce the temperature difference with the outdoor, and avoid the generation of condensation. Therefore, when V a ≥ V2, T A ≤ T2 and T a ≥ T3 is satisfied at least one time, then control the air conditioner to exit the anti-condensation mode, and control the air conditioner to execute the original operation mode. 5 min after the air conditioner exits the anti-condensation mode, the fan speed V a can be obtained again, A the outdoor ambient temperature T a and the indoor ambient temperature T a, the outdoor ambient temperature T A and the indoor ambient temperature T a to determine whether the air conditioner meets the conditions for the anti-condensation mode.

[0090] In one embodiment, the anti-condensation control method further includes:

[0091] When V a > V1, T A < T0 and T a > T1 at least one is satisfied, control the air conditioner to maintain the current operating mode.

[0092] It should be noted that after the air conditioner maintains the current operating mode, it can cycle according to the third set time until the air conditioner meets the conditions for the anti-condensation mode. Among them, this application has no limit on the third set time, which can be the same as the first set time and the second set time, or different. For example, the third set time can be 1 min, 5 min, 10 min, etc.

[0093] For example, taking V1 = 1000 r / min, T0 = 30 °C, T1 = 23 °C, and the third set time is 1 min as an example for explanation. V a > 1000 r / min indicates that the fan speed at the air outlet of the indoor unit is relatively high, and a higher fan speed means a higher air outlet speed of the indoor unit. In this case, it is not easy for the air conditioner to produce condensation. T A < 30 °C indicates that the outdoor ambient temperature is relatively low, the temperature difference between indoor and outdoor is small, and it is not easy to produce condensation. T a > 23 °C indicates that the indoor ambient temperature is high, the temperature difference between indoor and outdoor is small, and it is not easy to produce condensation. Therefore, V a > 1000 r / min, T A < 30 °C and / or T a > 23 °C, it is easy to produce condensation. Therefore, under the above conditions, control the air conditioner to maintain the current operating mode and do not execute the anti-condensation mode. After the air conditioner maintains the current operating mode for 1 min, the fan speed V can be obtained again a , the outdoor ambient temperature T A and the indoor ambient temperature T a , and determine whether the air conditioner meets the conditions for the anti-condensation mode according to the obtained fan speed V a , the outdoor ambient temperature T A and the indoor ambient temperature T a .

[0094] In one embodiment, after the step of "controlling the air conditioner to enter the anti-condensation mode", it further includes:

[0095] When the air conditioner shuts down, or the air conditioner enters the heating mode, control the air conditioner to exit the anti-condensation mode.

[0096] It should be noted that when the air conditioner stops or enters the heating mode, controlling the air conditioner to exit the anti-condensation mode helps to reduce unnecessary energy consumption.

[0097] The following Figure 2 briefly describes a possible operation process of the anti-condensation control method for an air conditioner according to the present application. Figure 2 It is a logic diagram of a possible implementation manner of the anti-condensation control method for an air conditioner according to the present application.

[0098] S201. During the operation in the cooling mode, obtain the fan speed V of the indoor unit a , the outdoor ambient temperature T A and the indoor ambient temperature T a , and then execute S202.

[0099] S202. Determine whether V a ≤1000 r / min, T A ≥30 °C and T a ≤23 °C holds? If it holds, execute S203; if it does not hold, execute S210.

[0100] S203. Control the air conditioner to enter the anti-condensation mode. In this anti-condensation mode, control the opening degree of the electronic expansion valve to decrease at a speed of 5 steps / s, and at the same time adjust the air deflector to the maximum air outlet position, and then execute S204.

[0101] S204. Obtain the duration of the air conditioner in the anti-condensation mode, and then execute S205.

[0102] S205. Determine whether the duration is greater than or equal to 10 min? If it holds, execute S206; if it does not hold, execute S210.

[0103] S206. Obtain the fan speed V a , the outdoor ambient temperature T A and / or the indoor ambient temperature T a , and then execute S207.

[0104] S207. Determine whether V a ≥1200 r / min, T A ≤28 °C and T a ≥26 °C at least one holds? If it holds, execute S208; if it does not hold, execute S206.

[0105] S208. Control the air conditioner to exit the anti-condensation mode, and control the air conditioner to operate according to the original operation mode, and continue to execute S201 after 5 min.

[0106] S209. Control the air conditioner to maintain the current operating mode and continue to execute S201 after 1 minute.

[0107] S210. Obtain the current opening degree K of the electronic expansion valve d1 , and / or the gas temperature T C1 , and then execute S211.

[0108] S211. Determine whether the current opening degree K d1 ≥70 steps, and / or T C1 ≥22°C holds? If it holds, execute S212; if not, execute S203.

[0109] S212. Control the electronic expansion valve to stop closing the valve.

[0110] Those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0111] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principle of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A method for anti-condensation control of an air conditioner, characterized in that, The anti-condensation control method includes: During the operation in the refrigeration mode or the dehumidification mode, obtain the fan speed V of the indoor unit a , the outdoor ambient temperature T A and the indoor ambient temperature T a ; Compare the rotational speed V of the fan with the first preset rotational speed V1, the outdoor ambient temperature T a with the first preset outdoor temperature T0, and the indoor ambient temperature T A with the first preset indoor temperature T1 respectively; a ​ Based on the comparison result, selectively control the air conditioner to enter the anti-condensation mode.

2. The anti-condensation control method according to claim 1, wherein The step of "Based on the comparison result, selectively control the air conditioner to enter the anti-condensation mode" further includes: When V a ≤ V1, T A ≥ T0 and T a ≤ T1, control the air conditioner to enter the anti-condensation mode.

3. The anti-condensation control method according to claim 2, wherein The step of "Control the air conditioner to enter the anti-condensation mode" further includes: Reduce the opening degree of the throttling element and increase the opening degree of the air deflector at the same time.

4. The anti-condensation control method according to claim 3, characterized in that, The step of "Reduce the opening degree of the throttling element" further includes: Control the opening degree of the throttling element to decrease at a preset valve closing speed.

5. The anti-condensation control method according to claim 3, wherein Simultaneously with or after the step of "Reduce the opening degree of the throttling element", the control method further includes: Obtain the current opening degree K of the throttling element d1 , and / or the gas temperature T in the pipeline between the evaporator outlet side and the outdoor unit C1 ; Compare the current opening degree K d1 with the preset opening degree K d0 in terms of magnitude, and / or compare the gas temperature T C1 with the preset gas temperature T C0 in terms of magnitude; When K d1 ≤ K d0 and / or T C1 ≥ T C0 then control the throttle element to stop closing the valve.

6. The anti-condensation control method according to claim 3, wherein The step of "Increase the opening degree of the air deflector" further includes: Adjust the air deflector to the maximum air outlet position.

7. The anti-condensation control method according to claim 2, wherein, After the step of "Control the air conditioner to enter the anti-condensation mode", it further includes: After the air conditioner continues in the anti-condensation mode for a first set time, the fan speed V is obtained again a , the outdoor ambient temperature T A and / or the indoor ambient temperature T a ; Compare the rotational speed V of the fan a with the magnitude of the second preset rotational speed V2 and the outdoor ambient temperature T A with the magnitude of the second outdoor preset temperature T2 and / or the indoor ambient temperature T a with the magnitude of the second indoor preset temperature T3; Based on the comparison result, selectively control the air conditioner to exit the anti-condensation mode; Wherein, V2 > V1, T2 < T0, T3 > T1.

8. The anti-condensation control method according to claim 7, characterized in that, The anti-condensation control method further includes: When V a ≥ V2, T A ≤ T2 and T a ≥ T3, when at least one of them is satisfied, control the air conditioner to exit the anti-condensation mode and control the air conditioner to execute the original operation mode.

9. The anti-condensation control method according to claim 2, wherein The step of "Based on the comparison result, selectively control the air conditioner to enter the anti-condensation mode" further includes: When V a > V1, T A < T0 and T a > T1 satisfies at least one of them, control the air conditioner to maintain the current operation mode.

10. The anti-condensation control method according to claim 1, wherein, After the step of "Control the air conditioner to enter the anti-condensation mode", it further includes: When the air conditioner shuts down or enters the heating mode, control the air conditioner to exit the anti-condensation mode.

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