Air conditioner control method and device, air conditioner and storage medium

Abstract

This invention provides an air conditioning control method, device, air conditioner, and storage medium. The method is applied to a fresh air conditioning system. The fresh air duct of the fresh air conditioning system is equipped with a sensor for measuring changes in airflow. The method includes: acquiring a first parameter measured by the sensor; acquiring a second parameter measured by the sensor after a preset first time period; determining a parameter difference between the first parameter and the second parameter, wherein the parameter difference characterizes the change in airflow in the fresh air duct; and controlling the operation of the fresh air conditioning system based on the parameter difference. Here, the parameter difference characterizes the change in airflow in the fresh air duct, which is equivalent to controlling the operation of the fresh air conditioning system based on the change in airflow in the fresh air duct. This can reduce the impact of fresh air on the air supply status, thereby reducing the impact on indoor temperature and humidity.

Description

Technical Field

[0001] This invention relates to the field of smart home appliance technology, and in particular to an air conditioning control method, device, air conditioner, and storage medium. Background Technology

[0002] As building functions become increasingly specialized, air conditioning systems are also diversifying and evolving across different categories to meet various user needs. Among these, temperature and humidity-controlled buildings are becoming more common. These buildings utilize air conditioning technology to maintain indoor temperature and humidity within a constant range, ensuring a comfortable environment for users. They are frequently found in residential buildings, factory workshops, commercial buildings, and public buildings where high comfort levels are required. In some cases, to ensure air circulation, fresh air is simultaneously introduced, which can affect the air supply and consequently the indoor temperature and humidity levels. Summary of the Invention

[0003] To address the technical problem that in some situations, fresh air is simultaneously introduced to ensure air circulation, which affects the air supply and consequently the indoor temperature and humidity, this invention provides an air conditioning control method, device, air conditioner, and storage medium. The specific technical solution is as follows:

[0004] In a first aspect of the present invention, an air conditioning control method is provided, applied to a fresh air conditioning system, wherein the fresh air duct of the fresh air conditioning system is equipped with a sensor for measuring changes in air volume, and the method includes:

[0005] Obtain the first parameter measured by the sensor;

[0006] After a preset first time period, the second parameter measured by the sensor is obtained;

[0007] Determine the parameter difference between the first parameter and the second parameter, wherein the parameter difference characterizes the air volume change of the fresh air duct;

[0008] The operation of the fresh air conditioner is controlled based on the parameter difference.

[0009] In one optional implementation, the sensor includes a differential pressure sensor;

[0010] The step of acquiring the first parameter measured by the sensor includes:

[0011] Obtain the first differential pressure measured by the differential pressure sensor;

[0012] The acquisition of the second parameter measured by the sensor includes:

[0013] Obtain the second differential pressure measured by the differential pressure sensor;

[0014] Determining the parameter difference between the first parameter and the second parameter includes:

[0015] Determine the pressure difference between the first pressure difference and the second pressure difference;

[0016] The step of controlling the operation of the fresh air conditioner based on the parameter difference includes:

[0017] The operation of the fresh air conditioner is controlled based on the pressure difference value.

[0018] In an optional implementation, controlling the operation of the fresh air conditioner based on the pressure difference value includes:

[0019] Determine whether the absolute value of the pressure difference is less than a preset first pressure difference threshold;

[0020] If the absolute value of the pressure difference is less than the preset first pressure difference threshold, then the operating state of the fresh air conditioner remains unchanged; and,

[0021] After a preset second time period, the process jumps to the step of obtaining the second differential pressure measured by the differential pressure sensor;

[0022] If the absolute value of the pressure difference is not less than the preset first pressure difference threshold, then adjust the opening of the return air valve and / or the humidification water valve in the fresh air conditioner.

[0023] The return air valve is used to control the mixing of return air from the return air duct and fresh air from the fresh air duct in the fresh air air conditioner.

[0024] The humidification water valve is used to control the water supply to the spray humidifier of the air handling unit in the fresh air conditioner.

[0025] In an optional implementation, adjusting the opening of the return air valve and / or the humidification water valve in the fresh air conditioner includes:

[0026] Determine whether the differential pressure value is greater than a preset second differential pressure threshold;

[0027] If the differential pressure value is greater than the preset second differential pressure threshold, then the opening of the return air valve in the fresh air conditioner is reduced, and / or the opening of the humidification water valve in the fresh air conditioner is increased.

[0028] If the differential pressure value is not greater than the preset second differential pressure threshold, then the opening degree of the return air valve in the fresh air conditioner is increased, and / or the opening degree of the humidification water valve in the fresh air conditioner is decreased.

[0029] In an optional implementation, acquiring the first parameter measured by the sensor includes:

[0030] Obtain the current temperature and relative humidity of the return air duct in the fresh air conditioner;

[0031] Obtain the temperature difference between the current temperature and the preset temperature, and determine whether the absolute value of the temperature difference is less than the preset temperature error threshold.

[0032] If the absolute value of the temperature difference is less than the preset temperature error threshold, then the return air valve in the fresh air conditioner is opened; and,

[0033] Obtain the humidity difference between the current relative humidity and the preset relative humidity, and determine whether the absolute value of the humidity difference is less than the preset humidity error threshold;

[0034] If the absolute value of the humidity difference is less than the preset humidity error threshold, the first parameter measured by the sensor is obtained.

[0035] In an optional implementation, the method further includes:

[0036] If the absolute value of the temperature difference is not less than the preset temperature error threshold, obtain the sum of the preset temperature and the preset temperature error threshold.

[0037] Determine whether the current temperature is greater than the sum of the given and current temperatures, and adjust the operating power of the outdoor unit of the fresh air conditioner according to the determination result; and,

[0038] After a preset third time period, the process jumps to the step of obtaining the current temperature and relative humidity of the return air duct in the fresh air conditioner.

[0039] In an optional implementation, adjusting the operating power of the outdoor unit of the fresh air conditioner based on the judgment result includes:

[0040] If the current temperature is greater than the sum of the given and current temperatures, increase the operating power of the outdoor unit of the fresh air conditioner.

[0041] If the current temperature is not greater than the specified temperature, reduce the operating power of the outdoor unit of the fresh air conditioner.

[0042] In an optional implementation, the method further includes:

[0043] If the absolute value of the humidity difference is not less than the preset humidity error threshold, determine whether the current relative humidity is greater than the preset relative humidity.

[0044] Based on the judgment result, adjust the opening degree of the humidification water valve in the fresh air conditioner; and,

[0045] After a preset third time period, the process jumps to the step of obtaining the current temperature and relative humidity of the return air duct in the fresh air conditioner.

[0046] In an optional implementation, adjusting the opening of the humidification water valve in the fresh air conditioner based on the judgment result includes:

[0047] If the current relative humidity is greater than the preset relative humidity, reduce the opening of the humidifying water valve in the fresh air conditioner;

[0048] If the current relative humidity is not greater than the preset relative humidity, increase the opening of the humidification water valve in the fresh air conditioner.

[0049] In an optional implementation, obtaining the current temperature and current relative humidity of the return air duct in the fresh air conditioner includes:

[0050] The temperature and humidity of the fresh air duct in the fresh air conditioner, as well as the preset temperature and preset relative humidity, are obtained.

[0051] The fresh air conditioning unit is activated according to the stated temperature and humidity, the preset temperature, and the preset relative humidity.

[0052] After a preset fourth time period, the current temperature and relative humidity of the return air duct in the fresh air conditioner are obtained.

[0053] In a second aspect of the present invention, an air conditioning control device is also provided, the device comprising:

[0054] The first parameter acquisition module is used to acquire the first parameter measured by the sensor;

[0055] The second parameter acquisition module is used to acquire the second parameter measured by the sensor after a preset first time period.

[0056] The parameter difference determination module is used to determine the parameter difference between the first parameter and the second parameter, wherein the parameter difference characterizes the air volume change of the fresh air duct;

[0057] An air conditioning control module is used to control the operation of the fresh air conditioner based on the parameter difference.

[0058] In a third aspect of the present invention, an air conditioner is also provided, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus.

[0059] Memory, used to store computer programs;

[0060] When the processor executes a program stored in the memory, it implements any of the air conditioning control methods described in the first aspect above.

[0061] In a fourth aspect of the present invention, a storage medium is also provided, the storage medium storing instructions that, when run on a computer, cause the computer to execute any of the air conditioning control methods described in the first aspect above.

[0062] In a fifth aspect of the present invention, a computer program product containing instructions is also provided, which, when run on a computer, causes the computer to execute any of the above-described air conditioning control methods.

[0063] The technical solution provided in this invention is applied to a fresh air conditioning system. The fresh air duct of the fresh air conditioning system is equipped with a sensor for measuring changes in airflow. A first parameter is acquired by the sensor, and after a preset first time period, a second parameter is acquired. The parameter difference between the first and second parameters is determined. This parameter difference characterizes the change in airflow in the fresh air duct. The operation of the fresh air conditioning system is controlled based on this parameter difference. By using a sensor installed in the fresh air duct of the fresh air conditioning system to acquire the first and second parameters at preset first time intervals, and determining the parameter difference between the first and second parameters, the operation of the fresh air conditioning system is controlled based on this parameter difference. Here, the parameter difference characterizes the change in airflow in the fresh air duct. This is equivalent to controlling the operation of the fresh air conditioning system based on the change in airflow in the fresh air duct, which can reduce the impact of fresh air on the air supply status, and thus reduce the impact on indoor temperature and humidity. Attached Figure Description

[0064] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0065] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0066] Figure 1 This is a schematic diagram of a primary return air system shown in an embodiment of the present invention;

[0067] Figure 2 This is a schematic diagram illustrating the implementation process of an air conditioning control method in an embodiment of the present invention;

[0068] Figure 3 This is a schematic diagram illustrating the implementation process of another air conditioning control method in an embodiment of the present invention;

[0069] Figure 4 This is a schematic diagram illustrating the implementation process of another air conditioning control method in an embodiment of the present invention;

[0070] Figure 5 This is a schematic diagram illustrating the implementation process of another air conditioning control method in an embodiment of the present invention;

[0071] Figure 6 This is a schematic diagram of the structure of an air conditioning control device shown in an embodiment of the present invention;

[0072] Figure 7 This is a schematic diagram of the structure of an air conditioner shown in an embodiment of the present invention. Detailed Implementation

[0073] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0074] like Figure 1 The diagram shown is a schematic diagram of a primary return air system (also known as a mixed air system) provided in an embodiment of the present invention. Figure 1 The portion shown is a part of a fresh air conditioning system. Taking a single-pass return air system as an example, the air conditioning control method provided in the embodiment of the present invention will be described.

[0075] A primary return air system includes: a sensor 1 (such as a differential pressure sensor, flow rate sensor, air volume sensor, etc.) for measuring changes in air volume, a return air valve 2, a filter 3, a surface cooler 4, a spray humidifier 5, a humidifying water valve 6, a baffle plate 7, and a fan 8.

[0076] The primary return air system consists of a return air duct above and a supply air duct and air handling unit (the unit circled in the rectangle) below. The left side is the mixing section of the air handling unit, where the air to be treated enters, passes through a filter section, a cooling surface, and a humidification section, and is then discharged by a fan.

[0077] For a single-pass return air system, the operation process is as follows: after fresh air is sent into the air handling unit, it is processed by the surface cooler and spray humidifier to reach a certain temperature and humidity, and then sent to the room by the fan; after the supply air circulates in the room, it enters from the return air inlet. Part of the return air mixes with the fresh air in the mixing section and participates in the next circulation, while the other part is directly discharged to the outside.

[0078] For example Figure 1 The single-pass air return system shown here, when incorporating fresh air, will affect the air supply status, thereby impacting indoor temperature and humidity. Since changes in the fresh air volume affect the air supply status, the operation of the fresh air conditioning system can be controlled based on changes in the fresh air duct volume. This can reduce the impact of fresh air on the air supply status, and consequently, reduce the impact on indoor temperature and humidity.

[0079] Based on the above principles, such as Figure 2 The diagram shown is a schematic representation of the implementation process of an air conditioning control method provided in an embodiment of the present invention. This method is applied to a fresh air conditioning system and may specifically include the following steps:

[0080] S201, Obtain the first parameter measured by the sensor.

[0081] S202, after a preset first time period, acquire the second parameter measured by the sensor.

[0082] S203, determine the parameter difference between the first parameter and the second parameter. The parameter difference represents the change in air volume in the fresh air duct.

[0083] S204 controls the operation of the fresh air conditioning system based on the parameter difference.

[0084] In this embodiment of the invention, for a fresh air conditioning system, a sensor for measuring changes in airflow is installed in the fresh air duct, such as... Figure 1 As shown, when fresh air and return air are mixed, the parameters measured by the sensor before and after the measurement can be obtained. Based on the parameters before and after the measurement, the change in the fresh air volume can be known, and the operation of the fresh air air conditioner can be controlled to reduce the impact on the air supply status.

[0085] Specifically, the first parameter measured by the sensor is obtained, and after a preset first time period, the second parameter measured by the sensor is obtained. The parameter difference between the first parameter and the second parameter is determined. Here, the parameter difference represents the change in the air volume of the fresh air duct in the fresh air conditioner. The operation of the fresh air conditioner is controlled according to the parameter difference.

[0086] For example, in the case of mixed fresh air and return air, the first parameter P0 is obtained by the sensor installed in the fresh air duct. After running for time t1, the second parameter P1 is obtained by the sensor again. The parameter difference ΔP1 between the first parameter and the second parameter is determined. Here, the parameter difference ΔP1 represents the change in air volume in the fresh air duct of the fresh air conditioner. The operation of the fresh air conditioner is controlled according to the parameter difference.

[0087] Among these sensors, one example is a flow velocity sensor, which can be used to measure the flow velocity of fresh air in the fresh air duct. By comparing the flow velocity changes between two measurements, the change in fresh air volume can be determined. Alternatively, other types of sensors can be used, as long as the changes in their measured parameters characterize the changes in fresh air volume in the fresh air duct. This embodiment of the invention does not impose any limitations on these types of sensors.

[0088] Therefore, a flow velocity sensor is installed in the fresh air duct of the fresh air conditioner to obtain the first flow velocity measured by the flow velocity sensor. After a preset first time period, the second flow velocity measured by the flow velocity sensor is obtained, and the flow velocity difference between the first flow velocity and the second flow velocity is determined. The flow velocity difference represents the change in the flow velocity of the fresh air in the fresh air duct, and also represents the change in the air volume of the fresh air duct. Thus, the operation of the fresh air conditioner can be controlled according to the flow velocity difference, thereby reducing the impact on the air supply status.

[0089] Based on the above description of the technical solution provided by the embodiments of the present invention, a first parameter and a second parameter are obtained by a sensor installed in the fresh air duct of the fresh air conditioner at a preset first time interval. The parameter difference between the first parameter and the second parameter is determined. The operation of the fresh air conditioner is controlled according to the parameter difference. Here, the parameter difference represents the change in air volume in the fresh air duct. This is equivalent to controlling the operation of the fresh air conditioner according to the change in air volume in the fresh air duct, which can reduce the impact of fresh air on the air supply status, and thus reduce the impact on the indoor temperature and humidity status.

[0090] In this embodiment of the invention, the sensor described above can also be a differential pressure sensor, which can measure the pressure difference in the fresh air duct. The pressure difference here is the pressure difference between the outdoor atmospheric pressure and the air pressure at the outlet of the fresh air duct. The change in this pressure difference can characterize the change in the air volume of the fresh air duct. Based on this, the operation of the fresh air air conditioner can be controlled, which can reduce the impact of fresh air on the air supply status, and thus reduce the impact on the indoor temperature and humidity status.

[0091] Based on this, such as Figure 3 The diagram shown illustrates the implementation flow of another air conditioning control method provided in this embodiment of the invention. This method is applied to a fresh air conditioning system and may specifically include the following steps:

[0092] S301, acquire the first differential pressure measured by the differential pressure sensor.

[0093] S302, after a preset first time period, acquire the second differential pressure measured by the differential pressure sensor.

[0094] S303, determine the pressure difference between the first pressure difference and the second pressure difference. The pressure difference represents the change in air volume in the fresh air duct.

[0095] S304 controls the operation of the fresh air conditioning system based on the pressure difference.

[0096] In this embodiment of the invention, a differential pressure sensor installed in the fresh air duct of a fresh air conditioner can acquire a first differential pressure measured by the differential pressure sensor. After a preset first time period, a second differential pressure measured by the differential pressure sensor can be acquired. The differential pressure difference between the first differential pressure and the second differential pressure can be determined. Here, the differential pressure difference represents the change in air volume in the fresh air duct. The operation of the fresh air conditioner is controlled according to the differential pressure difference.

[0097] For example, when fresh air and return air are mixed, the first differential pressure P0 measured by the differential pressure sensor installed in the fresh air duct is obtained. After running for time t1, the second differential pressure P1 measured by the differential pressure sensor is obtained again. The differential pressure difference ΔP1 between the first and second differential pressures is determined. Here, the differential pressure difference ΔP1 represents the change in air volume in the fresh air duct. Controlling the operation of the fresh air conditioner based on the differential pressure difference is essentially equivalent to controlling the operation of the fresh air conditioner based on the change in fresh air volume, which can reduce the impact on the air supply status.

[0098] In this embodiment of the invention, the operation of the fresh air conditioner is controlled based on the pressure difference value, and the specific control logic is as follows:

[0099] If the absolute value of the differential pressure difference is less than a preset first differential pressure threshold, the operation of the fresh air conditioner remains unchanged. After a preset second time period, the process jumps to the step of obtaining the second differential pressure measured by the differential pressure sensor. If the absolute value of the differential pressure difference is not less than the preset first differential pressure threshold, the opening of the return air valve and / or the opening of the humidification water valve in the fresh air conditioner are adjusted. The return air valve is used to control the mixing of return air in the return air duct and fresh air in the fresh air duct in the fresh air conditioner. The humidification water valve is used to control the water supply of the spray humidifier of the air handling unit in the fresh air conditioner.

[0100] For example, to determine whether the absolute value of the differential pressure ΔP1 is less than ΔP, that is, to determine whether the second differential pressure P1 ∈ (P0-ΔP, P0+ΔP), where ΔP is the preset differential pressure change, if the differential pressure is within this range, then it is assumed that the fresh air volume has not changed. Therefore, if the absolute value of the differential pressure ΔP1 is less than ΔP, it means that the fresh air volume has not changed, and no adjustment is needed. The operating condition is maintained, that is, the operating state of the fresh air conditioner remains unchanged. After running t0, the process jumps to the step of obtaining the second differential pressure P1 measured by the differential pressure sensor, that is, obtaining the second differential pressure P1 measured by the differential pressure sensor again to determine whether the fresh air volume has changed, thus realizing automatic control of the working mode. If the absolute value of the differential pressure ΔP1 is not less than ΔP, it means that the fresh air volume has changed. At this time, the opening of the return air valve and / or the humidification water valve in the fresh air conditioner is adjusted.

[0101] It should be noted that the return air damper is used to control the mixing of return air from the return air duct and fresh air from the fresh air duct in the fresh air conditioning system. Its location is as follows: Figure 1 As shown, the return air duct and the fresh air duct are connected by a certain pipe (the return air can enter the mixing section through this pipe and mix with the fresh air), and the return air valve is installed in this pipe. The humidification water valve, used to control the water supply to the spray humidifier of the air handling unit in the fresh air conditioning system, is located as shown in the diagram. Figure 1 As shown, it can be installed at one end of the spray humidifier.

[0102] In this embodiment of the invention, the opening degree of the return air valve and / or the humidification water valve in the fresh air conditioner can be adjusted in the following way: it is determined whether the pressure difference value is greater than a preset second pressure difference threshold. If the pressure difference value is greater than the preset second pressure difference threshold, the opening degree of the return air valve in the fresh air conditioner is reduced, and / or the opening degree of the humidification water valve in the fresh air conditioner is increased. If the pressure difference value is not greater than the preset second pressure difference threshold, the opening degree of the return air valve in the fresh air conditioner is increased, and / or the opening degree of the humidification water valve in the fresh air conditioner is decreased.

[0103] For example, when the fresh air volume changes, determine whether ΔP1 is greater than 0. If ΔP1 is greater than 0, it indicates that the second pressure difference is large and the fresh air volume increases. In this case, the opening of the return air valve in the fresh air conditioner can be reduced, and / or the opening of the humidification water valve in the fresh air conditioner can be increased to increase the humidification. If ΔP1 is not greater than 0, it indicates that the second pressure difference is small and the fresh air volume decreases. In this case, the opening of the return air valve in the fresh air conditioner can be increased, and / or the opening of the humidification water valve in the fresh air conditioner can be decreased to decrease the humidification.

[0104] Based on the above description of the technical solution provided by the embodiments of the present invention, a differential pressure sensor installed in the fresh air duct of the fresh air conditioner acquires a first differential pressure and a second differential pressure measured at preset first time intervals, determines the differential pressure difference between the first differential pressure and the second differential pressure, and controls the operation of the fresh air conditioner according to the differential pressure difference. Here, the differential pressure difference represents the change in air volume in the fresh air duct. This is equivalent to controlling the operation of the fresh air conditioner according to the change in air volume in the fresh air duct, which can reduce the impact of fresh air on the air supply status, and thus reduce the impact on the indoor temperature and humidity status.

[0105] In addition, before performing the above step S301, the embodiments of the present invention can also obtain the temperature and humidity of the fresh air duct in the fresh air conditioner, as well as the preset temperature and preset relative humidity. Here, the preset temperature and preset relative humidity can be user-set requirement parameters or requirement parameters set according to the current environment. Thus, according to the temperature and humidity, preset temperature and preset relative humidity, the fresh air conditioner is started, and after a preset fourth time period (e.g., 600s), the current temperature and current relative humidity of the return air duct in the fresh air conditioner are obtained.

[0106] The system acquires the temperature difference between the current temperature and the preset temperature (e.g., 26°C) and determines whether the absolute value of the temperature difference is less than the preset temperature error threshold (e.g., 1°C). If the absolute value of the temperature difference is less than the preset temperature error threshold, the system opens the return air valve in the fresh air conditioner. The system also acquires the humidity difference between the current relative humidity and the preset relative humidity and determines whether the absolute value of the humidity difference is less than the preset humidity error threshold (e.g., 5% of the preset relative humidity). If the absolute value of the humidity difference is less than the preset humidity error threshold, the system acquires the first parameter measured by the sensor, i.e., performs the above step S301.

[0107] Additionally, if the absolute value of the temperature difference is not less than a preset temperature error threshold, the system obtains the sum of the preset temperature and the preset temperature error threshold (e.g., 27°C); determines whether the current temperature is greater than the sum of the temperatures, and adjusts the operating power of the outdoor unit of the fresh air conditioner based on the determination result; and after a preset third time period (e.g., 300s), it jumps to the step of obtaining the current temperature and current relative humidity of the return air duct in the fresh air conditioner. If the absolute value of the humidity difference is not less than a preset humidity error threshold, it determines whether the current relative humidity is greater than the preset relative humidity; adjusts the opening of the humidifier water valve in the fresh air conditioner based on the determination result; and after a preset third time period, it jumps to the step of obtaining the current temperature and current relative humidity of the return air duct in the fresh air conditioner.

[0108] In this embodiment of the invention, the operating power of the outdoor unit of the fresh air conditioner is adjusted according to the judgment result, as follows: when the current temperature is greater than temperature and temperature, the operating power of the outdoor unit of the fresh air conditioner is increased; when the current temperature is not greater than temperature and temperature, the operating power of the outdoor unit of the fresh air conditioner is decreased.

[0109] In this embodiment of the invention, the opening degree of the humidifying water valve in the fresh air conditioner is adjusted according to the judgment result, as follows: when the current relative humidity is greater than the preset relative humidity, the opening degree of the humidifying water valve in the fresh air conditioner is reduced; when the current relative humidity is not greater than the preset relative humidity, the opening degree of the humidifying water valve in the fresh air conditioner is increased.

[0110] In this embodiment of the invention, taking the cooling mode as an example, the control method of the air conditioner is described as follows: Figure 4 As shown.

[0111] S401, obtain the temperature and humidity of the fresh air duct in the fresh air conditioner, as well as the preset temperature and preset relative humidity.

[0112] S402, start the fresh air conditioner according to the temperature and humidity, preset temperature and preset relative humidity.

[0113] S403, after 600 seconds of startup, obtains the current temperature and relative humidity of the return air duct in the fresh air conditioner, determines whether the conditions for switching working modes are met, and enters the mixed air working mode.

[0114] S404 detects the fresh air pressure difference and controls the spray humidifier to adjust the humidification amount based on its changes.

[0115] S405, after running t0, checks whether the current operating conditions meet the user's needs, and adjusts the operating mode according to the results.

[0116] S406, Shutdown: First, shut down the compressor, water pump, and other components. Then, shut down the fan, close the air valve, and finally disconnect the control to complete the shutdown.

[0117] For details regarding steps S403 to S405 above, please refer to [link / reference]. Figure 5 The specific control process of the air conditioner is shown below:

[0118] After 600 seconds of startup, the temperature and humidity at the return air vent are read, which means the current temperature and relative humidity of the return air duct in the fresh air air conditioner are obtained.

[0119] If the current return air temperature (i.e., the current temperature) reaches the preset value of 26±1℃, and the condition is valid, the air valve is opened, i.e., the return air valve is opened, and the system enters the mixed air condition; otherwise, the current return air temperature T>27℃ is determined.

[0120] If the current return air temperature is greater than 27℃, it indicates that the cooling capacity is insufficient. Increase the operating power of the outdoor unit and adjust the capacity value accordingly. Conversely, if the temperature is lower than 27℃, it indicates that the cooling capacity is surplus. Decrease the operating power of the outdoor unit and adjust the capacity value accordingly. After running for 300 seconds, the system will jump to the step of reading the temperature and humidity at the return air vent.

[0121] In mixed-air operation, it is determined whether the current relative humidity meets the set value Φ0±5%. If the determination is valid, the current indoor temperature and humidity have stabilized and the system enters the automatic adjustment mode; otherwise, it is determined that the current relative humidity value Φ>Φ0.

[0122] If the current relative humidity value Φ > Φ0, it indicates that the current relative humidity is too high. In this case, reduce the opening of the water valve for the spray humidifier to decrease the humidification output. Conversely, if the current relative humidity is too low, increase the opening of the water valve to increase the humidification output. After running for 300 seconds, the program will jump to the step of reading the temperature and humidity at the return air vent.

[0123] When the automatic adjustment mode is entered, read the current differential pressure gauge reading P0 at the fresh air inlet (this differential pressure is the pressure difference between the outdoor atmospheric pressure and the fresh air inlet). After running for t1 time, read the differential pressure gauge reading P1 again.

[0124] The system determines the current differential pressure value P1 ∈ (P0 - ΔP, P0 + ΔP), where ΔP is the preset change in differential pressure. If the differential pressure falls within this range, the fresh air volume is assumed to remain unchanged. If the determination is valid, no adjustment is needed, and the system continues operating. After running for t0, the differential pressure gauge reading P1 is read again to determine if the fresh air volume has changed, thus achieving automatic control of the operating mode. Conversely, if the reading does not change, the fresh air volume is considered to have changed.

[0125] When the fresh air volume changes, calculate P1 - P0 = ΔP1 and determine if ΔP1 > 0. If the determination is valid, it indicates that the current pressure difference is large and the fresh air volume is increasing. In this case, decrease the opening of the return air vent damper and increase the opening of the water valve to increase the humidification capacity. Conversely, if the current pressure difference is small and the fresh air volume is decreasing, increase the opening of the return air vent damper and decrease the opening of the water valve to decrease the humidification capacity. After running for 300 seconds, proceed to the step of reading the temperature and humidity at the return air vent.

[0126] It should be noted that when applied to actual products, some preset values ​​and parameters need to be calculated and tested in advance. For example, the ambient temperature and humidity, the inlet and outlet water temperatures of the cooling coil, and the inlet water temperature of the spray humidifier all directly affect the calculation of the unit's capacity. Another example is t0 mentioned above, which indicates the time interval after which the unit should be re-tested for changes in operating conditions after stable operation. This interval must be specifically set based on user needs and building functionality.

[0127] Thus, this embodiment of the invention regulates the amount of humidification generated by the fresh air conditioning spray system through differential pressure adjustment. Combined with spray humidification technology, it utilizes differential pressure, temperature, and humidity detection to link the unit's operating mode switching, thereby achieving the regulation of indoor temperature and humidity. Simultaneously, it achieves automatic switching of operating modes, changing according to changes in fresh air volume, reducing the impact of fresh air volume fluctuations on the air supply status, and reducing user operating costs. It also achieves energy conservation and environmental protection to a certain extent.

[0128] Corresponding to the above method embodiments, this invention also provides an air conditioning control device, such as... Figure 6 As shown, the device may include: a first parameter acquisition module 610, a second parameter acquisition module 620, a parameter difference determination module 630, and an air conditioning control module 640.

[0129] The first parameter acquisition module 610 is used to acquire the first parameter measured by the sensor.

[0130] The second parameter acquisition module 620 is used to acquire the second parameter measured by the sensor after a preset first time period.

[0131] The parameter difference determination module 630 is used to determine the parameter difference between the first parameter and the second parameter, wherein the parameter difference characterizes the air volume change of the fresh air duct;

[0132] The air conditioning control module 640 is used to control the operation of the fresh air conditioner based on the parameter difference.

[0133] This invention also provides an air conditioner, such as... Figure 7 As shown, it includes a processor 71, a communication interface 72, a memory 73, and a communication bus 74. The processor 71, the communication interface 72, and the memory 73 communicate with each other through the communication bus 74.

[0134] Memory 73 is used to store computer programs;

[0135] When processor 71 executes the program stored in memory 73, it performs the following steps:

[0136] The system acquires a first parameter measured by the sensor; after a preset first time period, it acquires a second parameter measured by the sensor; it determines the parameter difference between the first parameter and the second parameter, the parameter difference representing the change in air volume of the fresh air duct; and it controls the operation of the fresh air conditioner based on the parameter difference.

[0137] The communication bus mentioned above for air conditioning can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not mean that there is only one bus or one type of bus.

[0138] The communication interface is used for communication between the air conditioner and other devices.

[0139] The memory may include random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0140] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0141] In another embodiment of the present invention, a storage medium is also provided, which stores instructions that, when run on a computer, cause the computer to execute any of the air conditioning control methods described in the above embodiments.

[0142] In another embodiment of the present invention, a computer program product containing instructions is also provided, which, when run on a computer, causes the computer to execute any of the air conditioning control methods described in the above embodiments.

[0143] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk (SSD)).

[0144] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0145] Similar parts can be referred to interchangeably, and each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple, and relevant parts can be referred to the description of the method embodiments.

[0146] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. An air conditioning control method, characterized in that, The method, applied to a fresh air conditioning system, includes a sensor in the fresh air duct for measuring changes in airflow, the sensor including a differential pressure sensor, and the method comprising: The system acquires the current temperature and relative humidity of the return air duct in the fresh air conditioner; acquires the temperature difference between the current temperature and a preset temperature, and determines whether the absolute value of the temperature difference is less than a preset temperature error threshold; if the absolute value of the temperature difference is less than the preset temperature error threshold, the return air valve in the fresh air conditioner is opened; and acquires the humidity difference between the current relative humidity and a preset relative humidity, and determines whether the absolute value of the humidity difference is less than a preset humidity error threshold; if the absolute value of the humidity difference is less than the preset humidity error threshold, the system acquires a first parameter measured by the sensor, including: acquiring a first pressure difference measured by the pressure difference sensor; the pressure difference is the pressure difference between the outdoor atmospheric pressure and the air pressure at the fresh air duct inlet. After a preset first time period, the second parameter measured by the sensor is obtained, including: obtaining the second differential pressure measured by the differential pressure sensor; Determining the parameter difference between the first parameter and the second parameter includes: determining the pressure difference between the first pressure difference and the second pressure difference; the parameter difference characterizes the air volume change of the fresh air duct; Controlling the operation of the fresh air conditioner based on the parameter difference includes: controlling the operation of the fresh air conditioner based on the pressure difference. Controlling the operation of the fresh air conditioner based on the pressure difference value includes: determining whether the absolute value of the pressure difference value is less than a preset first pressure difference threshold; if the absolute value of the pressure difference value is not less than the preset first pressure difference threshold, adjusting the opening of the return air valve and / or the opening of the humidification water valve in the fresh air conditioner; the return air valve is used to control the mixing of return air in the return air duct and fresh air in the fresh air duct of the fresh air conditioner; the humidification water valve is used to control the water supply of the spray humidifier of the air handling unit in the fresh air conditioner.

2. The method according to claim 1, characterized in that, The step of controlling the operation of the fresh air conditioner based on the pressure difference includes: If the absolute value of the pressure difference is less than the preset first pressure difference threshold, then the operating state of the fresh air conditioner remains unchanged; and, After a preset second time period, the process jumps to the step of obtaining the second differential pressure measured by the differential pressure sensor.

3. The method according to claim 1, characterized in that, Adjusting the opening of the return air valve and / or the humidification water valve in the fresh air conditioner includes: Determine whether the differential pressure value is greater than a preset second differential pressure threshold; If the differential pressure value is greater than the preset second differential pressure threshold, then the opening of the return air valve in the fresh air conditioner is reduced, and / or the opening of the humidification water valve in the fresh air conditioner is increased. If the differential pressure value is not greater than the preset second differential pressure threshold, then the opening degree of the return air valve in the fresh air conditioner is increased, and / or the opening degree of the humidification water valve in the fresh air conditioner is decreased.

4. The method according to claim 1, characterized in that, The method further includes: If the absolute value of the temperature difference is not less than the preset temperature error threshold, obtain the sum of the preset temperature and the preset temperature error threshold. Determine whether the current temperature is greater than the sum of the given and current temperatures, and adjust the operating power of the outdoor unit of the fresh air conditioner according to the determination result; and, After a preset third time period, the process jumps to the step of obtaining the current temperature and relative humidity of the return air duct in the fresh air conditioner.

5. The method according to claim 4, characterized in that, Adjusting the operating power of the outdoor unit of the fresh air conditioner based on the judgment result includes: If the current temperature is greater than the sum of the given and current temperatures, increase the operating power of the outdoor unit of the fresh air conditioner. If the current temperature is not greater than the specified temperature, reduce the operating power of the outdoor unit of the fresh air conditioner.

6. The method according to claim 1, characterized in that, The method further includes: If the absolute value of the humidity difference is not less than the preset humidity error threshold, determine whether the current relative humidity is greater than the preset relative humidity. Based on the judgment result, adjust the opening degree of the humidification water valve in the fresh air conditioner; and, After a preset third time period, the process jumps to the step of obtaining the current temperature and relative humidity of the return air duct in the fresh air conditioner.

7. The method according to claim 6, characterized in that, The step of adjusting the opening of the humidification water valve in the fresh air conditioner based on the judgment result includes: If the current relative humidity is greater than the preset relative humidity, reduce the opening of the humidifying water valve in the fresh air conditioner; If the current relative humidity is not greater than the preset relative humidity, increase the opening of the humidification water valve in the fresh air conditioner.

8. The method according to claim 1, characterized in that, The step of obtaining the current temperature and relative humidity of the return air duct in the fresh air conditioner includes: The temperature and humidity of the fresh air duct in the fresh air conditioner, as well as the preset temperature and preset relative humidity, are obtained. The fresh air conditioning unit is activated according to the stated temperature and humidity, the preset temperature, and the preset relative humidity. After a preset fourth time period, the current temperature and relative humidity of the return air duct in the fresh air conditioner are obtained.

9. An air conditioning control device, characterized in that, An application in a fresh air conditioning system, wherein the fresh air duct of the fresh air conditioning system is equipped with a sensor for measuring changes in air volume, the sensor including a differential pressure sensor, and the device includes: The first parameter acquisition module is used to acquire the current temperature and current relative humidity of the return air duct in the fresh air conditioner; acquire the temperature difference between the current temperature and a preset temperature, and determine whether the absolute value of the temperature difference is less than a preset temperature error threshold; if the absolute value of the temperature difference is less than the preset temperature error threshold, then open the return air valve in the fresh air conditioner; and acquire the humidity difference between the current relative humidity and a preset relative humidity, and determine whether the absolute value of the humidity difference is less than a preset humidity error threshold; if the absolute value of the humidity difference is less than the preset humidity error threshold, acquire the first parameter measured by the sensor, including: acquiring the first pressure difference measured by the pressure difference sensor; the pressure difference is the pressure difference between the outdoor atmospheric pressure and the air pressure at the fresh air duct inlet; The second parameter acquisition module is used to acquire the second parameter measured by the sensor after a preset first time period, including: acquiring the second differential pressure measured by the differential pressure sensor; The parameter difference determination module is used to determine the parameter difference between the first parameter and the second parameter, including: determining the pressure difference between the first pressure difference and the second pressure difference; the parameter difference characterizes the air volume change of the fresh air duct; An air conditioning control module is used to control the operation of the fresh air conditioner according to the parameter difference, including: controlling the operation of the fresh air conditioner according to the pressure difference; Controlling the operation of the fresh air conditioner based on the pressure difference value includes: determining whether the absolute value of the pressure difference value is less than a preset first pressure difference threshold; if the absolute value of the pressure difference value is not less than the preset first pressure difference threshold, adjusting the opening of the return air valve and / or the opening of the humidification water valve in the fresh air conditioner; the return air valve is used to control the mixing of return air in the return air duct and fresh air in the fresh air duct of the fresh air conditioner; the humidification water valve is used to control the water supply of the spray humidifier of the air handling unit in the fresh air conditioner.

10. An air conditioner, characterized in that, It includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the steps of the method described in any one of claims 1-8.

11. A storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1-8.

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