Methods, apparatus, air conditioners and storage media for controlling ducted air conditioning systems

Abstract

This application relates to the field of intelligent air conditioning technology, and discloses a method, device, air conditioner, and storage medium for controlling ducted air conditioners. The method includes: when the ducted air conditioner is determined to be operating in a constant airflow mode with a currently set airflow, determining the initial static pressure of the ducted air conditioner through one or more constant-speed control of the fan module, wherein the set speed corresponding to the constant-speed control increases sequentially; determining a target speed corresponding to the initial static pressure based on a fitting relationship between the current speed and static pressure corresponding to the currently set airflow; and controlling the fan module of the ducted air conditioner to operate according to the target speed. This expands the application scenarios of constant airflow control for ducted air conditioners and improves the performance of the air conditioner.

Description

Technical Field

[0001] This application relates to the field of intelligent air conditioning technology, such as methods, devices, air conditioners, and storage media for controlling ducted air conditioning systems. Background Technology

[0002] Air conditioning has become an essential appliance in homes and offices, especially during the summer and winter seasons when it is used for extended periods. Ductless air conditioners, also known as ducted air conditioning units or ducted air conditioner units, have the same indoor unit as a type of terminal unit in central air conditioning systems (fan coil units), and both are ceiling-mounted, making them indistinguishable from each other externally. However, compared to central air conditioning, ductless air conditioners are cheaper to manufacture, easier to maintain, and more suitable for the air conditioning usage habits of Chinese people.

[0003] Currently, constant air volume control methods for ducted air conditioners include: detecting the initial static pressure of the duct, determining the target airflow speed that matches the initial static pressure, and controlling the fan module to operate at the target airflow speed to achieve constant airflow control. Specifically, the initial static pressure can be determined by detecting the current or power value of the ducted air conditioner at a certain speed and using a current / static pressure or power / static pressure relationship. However, high static pressure ducted air conditioners generally operate within a wide static pressure range, such as 0–500 Pa. The fan module cannot operate normally within this entire static pressure range at a single speed. Therefore, it is difficult to accurately determine the initial static pressure of the ducted air conditioner, and the effectiveness of the constant airflow mode operation needs further improvement.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a method, apparatus, air conditioner, and storage medium for controlling ducted air conditioning systems, addressing the technical issue that the effect of the constant air volume mode operation of air conditioners still needs to be improved.

[0007] In some embodiments, the method includes:

[0008] When the ducted air conditioner is determined to be operating in constant air volume mode with the current set air volume, the initial static pressure of the ducted air conditioner is determined by one or more constant speed control of the fan module. The set speed corresponding to constant speed control increases sequentially.

[0009] Based on the fitting relationship between the current speed and static pressure corresponding to the current set air volume, determine the target speed corresponding to the initial static pressure;

[0010] The fan module of the ducted air conditioner is controlled to operate according to the target rotation speed.

[0011] In some embodiments, the device includes:

[0012] The first determining module is configured to determine the initial static pressure of the ducted air conditioner by one or more constant speed control of the fan module when the ducted air conditioner is determined to be operating in constant air volume mode with the current set air volume. The set speed corresponding to the constant speed control increases sequentially.

[0013] The second determining module is configured to determine the target speed corresponding to the initial static pressure based on the fitting relationship between the current speed and static pressure corresponding to the current set air volume;

[0014] The control module is configured to control the operation of the fan module of the ducted air conditioner according to the target speed.

[0015] In some embodiments, the apparatus for controlling a ducted air conditioner includes a processor and a memory storing program instructions, the processor being configured to execute the above-described method for controlling a ducted air conditioner when executing the program instructions.

[0016] In some embodiments, the air conditioner includes an air conditioner body; the aforementioned device for controlling the duct air conditioner is installed on the air conditioner body.

[0017] In some embodiments, the storage medium stores program instructions that, when executed, perform the above-described method for controlling ducted air conditioning units.

[0018] The method, apparatus, and air conditioner for controlling ducted air conditioning units provided in this disclosure can achieve the following technical effects:

[0019] Ductless air conditioners operating within a wide static pressure range can determine their initial static pressure through one or more constant-speed controls of the fan module. Then, they can determine the target speed of the fan module that matches the initial static pressure and control the fan module to run at the target speed, thus achieving constant air volume control. This expands the application scenarios of constant air volume control for ductless air conditioners, improves the effectiveness of constant air volume mode operation, and ultimately enhances the performance of the air conditioner.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a schematic flowchart of a method for controlling a ducted air conditioning unit provided in an embodiment of this disclosure;

[0023] Figure 2 This is a schematic diagram of the static pressure current at a set rotational speed provided in an embodiment of this disclosure;

[0024] Figure 3 This is a schematic diagram of the static pressure current at a set rotational speed provided in an embodiment of this disclosure;

[0025] Figure 4 This is a schematic diagram of the static pressure current at a set rotational speed provided in an embodiment of this disclosure;

[0026] Figure 5 This is a schematic diagram of the relationship between rotational speed and static pressure under a set air volume provided in an embodiment of this disclosure;

[0027] Figure 6 This is a schematic diagram of the relationship between rotational speed and static pressure under a set air volume provided in an embodiment of this disclosure;

[0028] Figure 7 This is a schematic flowchart of a method for controlling a ducted air conditioning unit provided in an embodiment of this disclosure;

[0029] Figure 8 This is a schematic diagram of a duct air conditioning control device provided in an embodiment of the present disclosure;

[0030] Figure 9 This is a schematic diagram of a duct air conditioning control device provided in an embodiment of the present disclosure;

[0031] Figure 10 This is a schematic diagram of a duct air conditioning control device provided in an embodiment of the present disclosure;

[0032] Figure 11 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure. Detailed Implementation

[0033] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0034] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0035] Unless otherwise stated, the term "multiple" means two or more.

[0036] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0037] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0038] In this embodiment, not only can the ducted air conditioner achieve constant air volume control within a normal static pressure range, but also within a larger static pressure range, such as 0–500 Pa, the initial static pressure of the ducted air conditioner can be determined through one or more constant speed controls of the fan module. Then, the target speed of the fan module matching the initial static pressure is determined, and the fan module is controlled to run at the target speed to achieve constant air volume control of the air conditioner. This expands the application scenarios of constant air volume control for ducted air conditioners, improves the effect of the constant air volume mode operation of the air conditioner, and thus increases the performance of the air conditioner.

[0039] Figure 1 This is a schematic flowchart illustrating a method for controlling a ducted air conditioning unit according to an embodiment of this disclosure. Figure 1 As shown, the process of controlling a ducted air conditioning unit includes:

[0040] Step 101: After confirming that the ducted air conditioner is operating in constant air volume mode with the current set air volume, determine the initial static pressure of the ducted air conditioner through one or more constant speed control of the fan module. The set speed corresponding to constant speed control increases sequentially.

[0041] After the indoor unit of the air conditioner is powered on, when the wired controller receives the command for constant air volume mode operation carrying the current set air volume for the first time, it can be determined that the air conditioner has entered the constant air volume mode operation of the current set air volume. In other words, it is necessary to determine the initial static pressure of the ducted air conditioner.

[0042] Ductless air conditioners may operate within a normal static pressure range or within a larger static pressure range. Therefore, the fan module in the indoor unit can be operated at different speeds in one, two, or more steps, and the current of the fan module at each speed can be detected to determine the initial static pressure. In other words, the initial static pressure of the ductless air conditioner can be determined by one or more constant speed control of the fan module.

[0043] In this system, the set speed for constant speed control increases sequentially. For example, the set speed for the first constant speed control could be 955 RPM, for the second it could be 1150 RPM, and for the third it could be 1250 RPM. However, this is not a limitation; it could also be divided into four constant speed controls, with corresponding set speeds of 1000 RPM, 1100 RPM, 1200 RPM, and 1300 RPM, and so on.

[0044] In some embodiments, before determining the initial static pressure of the ducted air conditioner, the static pressure range test can be performed on the ducted air conditioner at different speeds to obtain the current of the fan module at different static pressures at each speed. The static pressure and its corresponding current are then fitted to obtain the corresponding static pressure-current fitting relationship. Finally, the speed, the corresponding static pressure range, and the static pressure-current fitting relationship are saved.

[0045] Figure 2 , Figure 3 and Figure 4 These are schematic diagrams illustrating the static pressure and current at a set rotation speed according to embodiments of this disclosure. The static pressure range corresponding to the operation of the ducted air conditioner is 0–500 Pa.

[0046] like Figure 2 As shown, n1 = 955 revolutions per minute, and the corresponding static pressure range obtained from the test is 0–240 Pa. Furthermore, the current of the fan module under different static pressures can be obtained through testing. Figure 2 As shown above, for example, when the static pressure is 150Pa, the current of the fan module obtained by the test is 6A. Therefore, by fitting each static pressure and its corresponding current, the corresponding static pressure-current fitting relationship can be obtained as y=52.905x+437.43, that is, Pst=f1(i)=52.905i+437.43.

[0047] like Figure 3As shown, n1 = 1150 revolutions per minute, and the corresponding static pressure range obtained from the test is 240–306 Pa. Through testing, the current of the fan module under different static pressures can be obtained, such as… Figure 3 As shown above, for example, when the static pressure is 320 Pa, the measured current of the fan module is approximately 6.8 A. Therefore, by fitting the static pressure and its corresponding current for each static pressure, the corresponding static pressure-current fitting relationship can be obtained as y = 0.4135x. 4 -12.914x 3 +147.19x 2 -743.95x+1743.7, that is, Pst=f2(i)=0.4135i 4 -12.914i 3 +147.19i 2 -743.95i+1743.7.

[0048] like Figure 4 As shown, n1 = 1250 revolutions per minute, and the corresponding static pressure range obtained from the test is 360–500 Pa. Through testing, the current of the fan module under different static pressures can be obtained, such as… Figure 4 As shown above, for example, when the static pressure is 420 Pa, the measured current of the fan module is approximately 7.2 A. Therefore, by fitting the static pressure and its corresponding current, the corresponding static pressure-current fitting relationship can be obtained as y = -7.81259x 2 +82.812x+231.8, that is, Pst=f3(i)=-7.81259i 2 +82.812i+231.8.

[0049] In this way, after obtaining the static pressure range corresponding to each rotational speed and the corresponding static pressure current fitting relationship, the rotational speed and the corresponding static pressure range and static pressure current fitting relationship can be saved, as shown in Table 1.

[0050] Table 1 shows the correspondence between the rotational speed, static pressure range, and static pressure current fitting relationship obtained after testing, as provided in an embodiment of this disclosure. The static pressure range for air conditioning operation is 0–500 Pa.

[0051] Fan module speed static pressure range Static voltage current fitting relationship <![CDATA[n1=955]]> <![CDATA[0~Pst1,Pst1=240Pa]]> <![CDATA[Pst=f1(i)]]> <![CDATA[n2=1150]]> <![CDATA[Pst1~Pst2,Pst2=360Pa]]> <![CDATA[Pst=f2(i)]]> <![CDATA[n3=1250]]> <![CDATA[Pst2~500Pa,Pst2=360Pa]]> <![CDATA[Pst=f3(i)]]>

[0052] Table 1

[0053] In Table 1, Pst = f1(i) = 52.905i + 437.43; Pst = f2(i) = 0.4135i 4 -12.914i 3 +147.19i 2 -743.95i+1743.7; Pst=f3(i)=-7.81259i2 +82.812i+231.8.

[0054] Of course, the embodiments disclosed herein are not limited to this. The set rotation speeds can be n1, n2, or n1, n2, n3, n4, etc. Thus, the static pressure range test of the air conditioner can be performed at different rotation speeds to obtain the current of the fan module at different static pressures at each rotation speed. The static pressure and its corresponding current are fitted to obtain the corresponding static pressure-current fitting relationship, and the rotation speed, the corresponding static pressure range, and the static pressure-current fitting relationship are saved.

[0055] Before performing one or more constant-speed control cycles on the fan module, the ducted air conditioner has saved the rotational speed, corresponding static pressure range, and static pressure-current fitting relationship. Therefore, for each constant-speed control cycle, if the initial static pressure can be determined based on the saved rotational speed, corresponding static pressure range, and static pressure-current fitting relationship, the next constant-speed control cycle can be skipped. If the initial static pressure cannot be determined, the next constant-speed control cycle must be performed. If the final constant-speed control cycle is performed, the initial static pressure must be determined based on the saved rotational speed, corresponding static pressure range, and static pressure-current fitting relationship.

[0056] Therefore, in some embodiments, determining the initial static pressure of the ducted air conditioner includes: when the current set speed is not the maximum set speed, if the current running time of the fan module at the current set speed reaches a first set time, obtaining the current current of the fan module, and determining the current static pressure range and the current static pressure current fitting relationship corresponding to the previous set speed; when the current current is greater than or equal to the current upper limit current value, determining the current static pressure corresponding to the current current and determining it as the initial static pressure according to the current static pressure current fitting relationship, wherein the current upper limit current value is determined according to the upper limit static pressure value of the current static pressure range and the current fitting relationship; when the current current is greater than or less than the current upper limit current value, determining the next set speed greater than the current set speed as the current set speed, and continuing to perform constant speed control according to the current set speed.

[0057] In some embodiments, determining the initial static pressure of the ducted air conditioner further includes: when the current set speed is the maximum set speed, if the current running time of the fan module at the current set speed reaches a first set time, obtaining the current current of the fan module, and determining the current static pressure range and the current static pressure-current fitting relationship corresponding to the previous set speed; determining the current static pressure corresponding to the current current based on the current static pressure-current fitting relationship; determining the larger value between the current static pressure and the minimum set static pressure as the initial static pressure, or determining the smaller value between the current static pressure and the upper limit static pressure value of the current static pressure range as the initial static pressure.

[0058] The first set time can be 1 minute, 2 minutes, or 3 minutes, etc. Taking the air conditioner saving Table 1 and the first set time being 2 minutes as an example, the process of determining the initial static pressure may include: after the ducted air conditioner enters the constant air volume mode of the current set air volume, the fan module is subjected to the first fixed speed control at 955 RPM. If 955 RPM is not the maximum set speed, then if the current running time of the fan module at 955 RPM reaches 2 minutes, the current current i of the fan module is obtained. d Based on Table 1, the corresponding current static pressure current fitting relationship can be obtained as Pst=f1(i)=52.905i+437.43, and the corresponding current upper limit current value i when Pst=240 can be obtained. s , if i d ≥i s At that time, the initial static pressure can be obtained as 52.905i. d +437.43. If i d s When the speed is greater than the current set speed, the next set speed will be determined as the current set speed. That is, the fan module needs to be controlled at 1150 RPM for the second time.

[0059] 1150 RPM is not the maximum set speed. If the fan module operates at 1150 RPM for 2 minutes, the current current i of the fan module will be obtained. d Based on Table 1, the corresponding current static pressure current fitting relationship can be obtained as Pst=f2(i)=0.4135i 4 -12.914i 3 +147.19i 2 -743.95i+1743.7, and we can obtain the current upper limit current value i when P st=360. s , if i d ≥i s When the initial static pressure is obtained, the initial static pressure is 0.4135(i). d ) 4 -12.914(i d ) 3 +147.19(i d ) 2 -743.95i d +1743.7. If i d s When the current speed is greater than the current set speed, the next set speed will be determined as the current set speed. That is, the fan module needs to be controlled at 1250 RPM for the second time.

[0060] ​​1250 RPM is the maximum set speed. If the fan module operates at 1250 RPM for 2 minutes, the current current i of the fan module is obtained. d According to Table 1, the corresponding current static pressure current fitting relationship can be obtained as Pst=f3(i)=-7.81259i 2 +82.812i+231.8, then the current static pressure Pst=f3(i)=-7.81259(i) can be obtained. d ) 2 +82.812i d +231.8. Thus, if the current static pressure Pst < 0, the initial static pressure can be determined to be 0 Pa; if the current static pressure Pst > 500, the initial static pressure can be determined to be 500 Pa; and if 0 ≤ Pst ≤ 500, the current static pressure can be determined as the initial static pressure.

[0061] Of course, if there are multiple set speeds for storing the correspondence between the rotational speed, static pressure range, and static pressure current fitting relationship, such as n1, n2, n3, and n4, then if the wind speed module is controlled to run starting from n1, and if the corresponding initial static pressure can be determined based on the current current of the wind turbine module during operation, then there is no need to perform constant speed control for the next set speed. If the corresponding initial static pressure cannot be determined, then constant speed control for the next set speed needs to continue until the last set speed n4. At this speed, the current static pressure corresponding to the current current can be determined based on the corresponding current fitting relationship, and the corresponding initial static pressure can be determined based on the corresponding operating range and the current static pressure. The specifics will not be elaborated here.

[0062] It can be seen that the initial static pressure of the duct air conditioner can be determined by one or more constant speed control of the fan module.

[0063] Step 102: Determine the target speed corresponding to the initial static pressure based on the fitting relationship between the current speed and static pressure corresponding to the current set air volume.

[0064] Before performing one or more constant speed control of the fan module, a speed-static pressure test is required. This involves testing the static pressure of the air conditioner at different speeds under a set airflow, fitting the static pressure of each speed to obtain the corresponding speed-static pressure fitting relationship, and saving the set airflow and the corresponding speed-static pressure fitting relationship.

[0065] Figure 5 , Figure 6 These are schematic diagrams illustrating the relationship between rotational speed and static pressure under a set airflow rate, as provided in the embodiments of this disclosure.

[0066] like Figure 5 As shown, the air volume is set to 7200m³ / h. 3 / h, thus, through testing, the static pressure of the air conditioner at different speeds can be obtained, such as Figure 5 As shown in the above points, the static pressure at a rotational speed of 1200 rpm is 350 Pa. Therefore, based on each rotational speed and its corresponding static pressure, i.e. Figure 5 By fitting the data to each point on the graph, the corresponding static pressure fitting relationship can be obtained as y = -0.0006x. 2 +1.5048x + 765.42 equals n t =f1(Pst)=-0.0006(Pst) 2 +1.5048Pst+765.42.

[0067] like Figure 6 As shown, the air volume is set to 6800m³ / h. 3 / h, thus, through testing, the static pressure of the air conditioner at different speeds can be obtained, such as Figure 6 As shown in the above points, the static pressure at a rotational speed of 1200 rpm is 400 Pa. Therefore, based on each rotational speed and its corresponding static pressure, i.e. Figure 6 By fitting the data to each point on the graph, the corresponding static pressure fitting relationship can be obtained as y = -0.0007x. 2 +1.5621x+730.23 is n t =f2(Pst) = -0.0007(Pst) 2 +1.5621Pst+730.23.

[0068] In this way, the static pressure corresponding to each rotation speed can be obtained, and the set air volume and the corresponding rotation speed static pressure fitting relationship can be saved, as shown in Table 2.

[0069] Table 2 shows the correspondence between the set air volume and the corresponding speed and static pressure fitting relationship obtained after testing, as provided in the embodiments of this disclosure.

[0070] Set air volume Rotation speed and static pressure fitting relationship <![CDATA[Q1=7200m 3 / h]]> <![CDATA[n t =f1(Pst)=-0.0006(Pst) 2 +1.5048PST+765.42]]> <![CDATA[Q2=6800m 3 / h]]> <![CDATA[n t <f2(Pst)>-0.0007(Pst) 2 +1.5621Pst+730.23]]>

[0071] Table 2

[0072] Of course, the embodiments disclosed herein are not limited to this. The set air volume can be Q1, Q2, Q3, or Q1, Q2, Q3, Q4, etc. Thus, the static pressure test of the air conditioner can be performed at different speeds under different air volumes, and the corresponding speed and static pressure can be fitted according to each speed and the corresponding speed and static pressure fitting relationship can be obtained. The set air volume and the corresponding speed and static pressure fitting relationship can be saved.

[0073] In this way, before performing one or more constant speed control operations on the fan module, the duct air conditioner has already saved the set air volume and the corresponding speed-static pressure fitting relationship. Therefore, based on the saved set air volume and the corresponding speed-static pressure fitting relationship, the current speed-static pressure fitting relationship corresponding to the current set air volume can be determined. Then, based on the current speed-static pressure fitting relationship, the target speed corresponding to the initial static pressure can be determined.

[0074] Taking the ducted air conditioner that saves the corresponding relationship shown in Table 2 as an example, if the current set air volume is 6800m³ / h 3 / h, then according to Table 2, the current speed-static pressure fitting relationship can be determined as n t =f2(Pst) = -0.0007(Pst) 2 +1.5621Pst+730.23. In step 101, the initial static pressure of the ducted air conditioner has been determined, i.e., Pst is known. Therefore, the corresponding rotational speed n can be determined. t And can be determined as the target speed.

[0075] Step 103: Control the fan module of the ducted air conditioner to operate according to the target speed.

[0076] Once the target speed corresponding to the current set airflow is determined, the fan module of the ducted air conditioner can be controlled to operate at the target speed. In some embodiments, if the fan module operates at the target speed for a second set time, it can be determined that the ducted air conditioner has entered a constant airflow operation state. The second set time can be 4 minutes, 5 minutes, 6 minutes, or 7 minutes, and can be determined according to the performance of the air conditioner, the region, etc.

[0077] As can be seen, in this embodiment of the present disclosure, the ducted air conditioner can determine the initial static pressure of the ducted air conditioner through one or more constant speed control of the fan module. Then, the target speed of the fan module matching the initial static pressure is determined, and the fan module is controlled to run at the target speed to achieve constant air volume control of the air conditioner. In this way, the application scenarios of constant air volume control of ducted air conditioners are expanded, the effect of constant air volume mode operation of the air conditioner is improved, and the performance of the air conditioner is improved.

[0078] After the indoor unit of the air conditioner is powered on, when the wired controller receives the constant air volume mode operation command carrying the current set air volume for the first time, it is necessary to determine the initial static pressure of the duct air conditioner. This disclosure is not limited to the embodiments described herein. To address situations where static pressure changes due to dirt or blockage, various other scenarios may occur where it is necessary to re-detect the actual static pressure and correct the target rotational speed. Specifically, in some embodiments, determining whether the ducted air conditioner enters the constant air volume mode of the currently set air volume includes: determining whether the air conditioner enters the constant air volume mode of the currently set air volume when the cumulative running time of the air conditioner in the constant air volume mode of the currently set air volume is greater than the set cumulative running time; determining whether the air conditioner enters the constant air volume mode of the currently set air volume corresponding to the ultra-high fan speed when the indoor unit of the air conditioner is powered on and if the ultra-high fan speed operation command is received for the first time; and determining whether the air conditioner switches to the first mode of operation before determining the initial static pressure of the ducted air conditioner or the target rotational speed corresponding to the initial static pressure, and determining whether the air conditioner enters the constant air volume mode of the currently set air volume corresponding to the high fan speed when the strong fan speed operation command is received after the first mode of operation is completed. The first mode includes: shutdown mode, defrost mode, oil return mode, anti-cold air mode, or fan speed switching mode, etc.

[0079] The cumulative running time can be set to 72h, 96h, etc. If the cumulative running time of the ducted air conditioner in constant air volume mode with a certain set air volume is greater than 72h or 96h, the actual static pressure needs to be re-detected and the target speed needs to be corrected. That is, to determine whether the air conditioner enters the constant air volume mode with the current set air volume, the initial static pressure of the ducted air conditioner needs to be determined through step 101 above, and the target speed needs to be determined through step 102 above. Based on the target speed, the fan module of the ducted air conditioner is controlled to run.

[0080] The fan module of a ducted air conditioner may also correspond to multiple speed settings, such as: ultra-high fan speed, strong fan speed, medium fan speed, low fan speed, etc. Therefore, when the indoor unit of the air conditioner is powered on and receives the ultra-high fan speed operation command for the first time, it is necessary to re-detect the actual static pressure and adjust the target speed to ensure the air conditioner enters the constant airflow mode corresponding to the current set airflow for the ultra-high fan speed setting.

[0081] If a ducted air conditioner fails to complete the steps of determining the initial static pressure or the target speed due to gear shifting, shutdown, defrosting, oil return, or anti-cold air control, and then receives a high-speed operation command again, that is, before determining the initial static pressure or the target speed corresponding to the initial static pressure, the air conditioner switches to the first mode. After completing the first mode operation, if a high-speed operation command is received, the actual static pressure needs to be re-detected and the target speed needs to be corrected. In other words, the air conditioner is determined to enter the constant air volume mode corresponding to the current set air volume of the ultra-high fan speed setting.

[0082] The first mode includes: shutdown mode, defrost mode, oil return mode, anti-cold air mode, or fan speed control mode, etc. Ductless air conditioners can operate in the first mode according to the corresponding control logic, which will not be described in detail here.

[0083] In some embodiments, if the fan module operates at the target speed for a period of time until a second set time is reached, it can be determined that the ducted air conditioner has entered a constant air volume operation state. Furthermore, after the air conditioner enters the constant air volume operation state, the current of the fan module can be monitored to determine whether the static pressure has changed, whether the actual static pressure needs to be re-detected, and whether the target speed needs to be corrected. That is, after controlling the fan module of the ducted air conditioner to operate, the process includes: when the fan module operates at the target speed for a period of time until the second set time is reached, obtaining the second current of the fan module corresponding to the second set time; periodically monitoring the current of the fan module to obtain the absolute current difference between each monitored current and the second current; and determining that the air conditioner has entered a constant air volume mode with the current set air volume when m consecutive absolute current differences are greater than or equal to the set current value, where m ≥ 2.

[0084] For example: m = 2, the current value is set to 0.2A, and when the fan module has been running at the target speed for 4 minutes, the corresponding second current I is obtained. t In this way, the current I of the wind turbine module is read every 30 seconds. i And obtain the corresponding absolute current difference ΔI. i =|I i -I t │, if ΔI i-1 ≥0.2A, and ΔI i If the static pressure is ≥0.2A, it can be determined that the actual static pressure needs to be re-detected and the target speed needs to be corrected. In other words, the air conditioner is determined to enter the constant air volume mode corresponding to the current set air volume of the ultra-high fan speed setting.

[0085] As can be seen, in this embodiment, not only is it necessary to determine the initial static pressure of the ducted air conditioner when running the constant air volume mode with the current set air volume for the first time, but the actual static pressure can also be re-detected and the target speed can be corrected according to dirt blockage, state switching, etc., which further improves the effect of the constant air volume mode operation mode of the air conditioner and further improves the performance of the air conditioner.

[0086] The following describes the operation process in a specific embodiment, illustrating the control process for ducted air conditioning provided by the embodiments of the present invention.

[0087] In one embodiment of this disclosure, the ducted air conditioner is referred to as a ducted unit. Through testing, the corresponding relationships shown in Tables 1 and 2 have been saved. The static pressure range corresponding to the operation of the ducted air conditioner is 0 to 500 Pa, the first set time can be 3 minutes, the second set time can be 5 minutes, the set current value is 0.2 A, and m = 2.

[0088] Figure 7 This is a schematic flowchart illustrating a method for controlling a ducted air conditioning unit according to an embodiment of this disclosure. Figure 7 As shown, the control process of a ducted air conditioning unit includes:

[0089] Step 701: Determine if the ducted air conditioner has entered the constant air volume mode of the currently set air volume. If yes, proceed to step 702; otherwise, return to step 701.

[0090] In this way, it can be determined that the ducted air conditioner enters the constant air volume mode with the current set air volume under various circumstances, including: after the indoor unit of the air conditioner is powered on, it receives the constant air volume mode operation command with the current set air volume for the first time; or, after the indoor unit of the air conditioner is powered on, it receives the ultra-high fan speed mode operation command for the first time; or, when the static pressure detection or speed calculation is not completed due to gear shifting, shutdown, defrosting, oil return, or anti-cold air control, the ducted air conditioner re-enters the high-speed mode operation, etc.

[0091] Step 702: According to the set wind speed from low to high, the duct air conditioner controls the fan module to run at the currently set speed, and when the corresponding running time reaches 3 minutes, obtains the current i of the fan module. d .

[0092] Of course, the set speed increases sequentially.

[0093] Step 703: Determine if the current set speed is the maximum set speed. If yes, proceed to step 708; otherwise, proceed to step 704.

[0094] Step 704: According to Table 1, the duct air conditioner determines the current static pressure range and the fitting relationship between the current static pressure and current corresponding to the current set speed, and obtains the current upper limit current value i corresponding to the upper limit static pressure value of the current static pressure range. s .

[0095] Step 705: Determine i d ≥i s Is this condition met? If yes, proceed to step 706; otherwise, proceed to step 707.

[0096] Step 706: The duct unit determines the current static pressure corresponding to the current current based on the current static pressure-current fitting relationship and sets it as the initial static pressure. Proceed to step 712.

[0097] Step 707: The duct air conditioner determines the next set speed that is greater than the current set speed as the current set speed, and returns to step 702.

[0098] Step 708: According to Table 1, the duct air conditioner determines the current static pressure range and the current static pressure current fitting relationship corresponding to the current set speed, and determines the current static pressure Pst corresponding to the current current based on the current static pressure current fitting relationship.

[0099] Step 709: Determine if 0≤Pst≤500 is true. If yes, proceed to step 710; otherwise, proceed to step 711.

[0100] Step 710: The duct unit determines the current static pressure Pst as the initial static pressure and proceeds to step 712.

[0101] Step 711: The duct unit determines the larger value between the current static pressure and 0 as the initial static pressure, or determines the smaller value between the current static pressure and 500pa as the initial static pressure, and proceeds to step 712.

[0102] Step 712: According to Table 2, determine the current speed and static pressure fitting relationship corresponding to the current set air volume, and determine the target speed corresponding to the initial static pressure based on the current speed and static pressure fitting relationship.

[0103] Step 713: The duct machine controls the fan module to run according to the target speed.

[0104] Step 714: When the running time at the target speed reaches 5 minutes, the duct unit acquires the corresponding second current I. t .

[0105] Step 715: At the time corresponding to the 30s interval, obtain the wind turbine module current I. i And obtain the corresponding absolute current difference ΔI. i =|I i -I t │.

[0106] Step 716: ΔI i Is ≥0.2A true? If yes, proceed to step 717; otherwise, return to step 715.

[0107] Step 717: Determine ΔI i-1 Is ≥0.2A true? If yes, return to step 702; otherwise, return to step 715.

[0108] As can be seen, in this embodiment, the ducted air conditioner operating within a static pressure range of 0–500 Pa can determine its initial static pressure through one, two, or three constant-speed controls of the fan module. Then, it determines the target speed of the fan module matching the initial static pressure and controls the fan module to operate at the target speed, achieving constant airflow control. This expands the application scenarios of constant airflow control for ducted air conditioners, improves the effectiveness of the constant airflow mode operation, and thus enhances the air conditioner's performance. Furthermore, by monitoring the current of the fan speed module, the actual initial static pressure can be re-detected, and the target speed can be corrected, further improving the effectiveness of the constant airflow mode operation and enhancing the air conditioner's performance.

[0109] Based on the above process for controlling ducted air conditioning units, a device for controlling ducted air conditioning units can be constructed.

[0110] Figure 8 This is a schematic diagram of a control device for a ducted air conditioning unit provided in an embodiment of this disclosure. The air conditioner is equipped with a water-washing fresh air module, such as... Figure 8 As shown, the air conditioning control device 800 for ducted air conditioners includes: a first determining module 810, a second determining module 820, and a control module 830.

[0111] The first determining module 810 is configured to determine the initial static pressure of the duct air conditioner by one or more constant speed controls of the fan module when the duct air conditioner is determined to be operating in a constant air volume mode with the current set air volume. The set speed corresponding to the constant speed control increases sequentially.

[0112] The second determining module 820 is configured to determine the target speed corresponding to the initial static pressure based on the fitting relationship between the current speed and static pressure corresponding to the current set air volume;

[0113] The control module 830 is configured to control the operation of the fan module of the duct air conditioner according to the target speed.

[0114] In some embodiments, the system further includes: a determination module configured to, when the indoor unit of the air conditioner is powered on, determine that the air conditioner enters the constant air volume mode operation with the current set air volume upon receiving a constant air volume mode operation command carrying the current set air volume for the first time; determine that the air conditioner enters the constant air volume mode operation with the current set air volume if the cumulative operation time of the air conditioner in constant air volume mode operation with the current set air volume is greater than a set cumulative operation time; determine that the air conditioner enters the constant air volume mode operation with the current set air volume corresponding to the ultra-high fan speed setting upon receiving a high fan speed setting operation command for the first time when the indoor unit of the air conditioner is powered on; and determine that the air conditioner switches to a first mode operation before determining the initial static pressure of the ducted air conditioner or before determining the target speed corresponding to the initial static pressure, and after completing the first mode operation, determine that the air conditioner enters the constant air volume mode operation with the current set air volume corresponding to the high fan speed setting upon receiving a high fan speed setting operation command, wherein the first mode includes: a shutdown mode, a defrost mode, an oil return mode, an anti-cold air mode, or a fan speed switching mode, etc.

[0115] In some embodiments, it also includes:

[0116] The first test and storage module is configured to perform static pressure range tests on the air conditioner at different speeds, obtain the current of the fan module at different static pressures at each speed, and fit the static pressure and its corresponding current to obtain the corresponding static pressure and current fitting relationship, and save the speed, the corresponding static pressure range and the static pressure and current fitting relationship.

[0117] The second test and save module is configured to test the static pressure of the air conditioner at different speeds under a set air volume, and to fit the static pressure with each speed to obtain the corresponding speed-static pressure fitting relationship, and save the set air volume and the corresponding speed-static pressure fitting relationship.

[0118] In some embodiments, the first determining module 810 includes:

[0119] The first determining unit is configured to, when the current running time of the fan module at the current set speed reaches a first set time, obtain the current current of the fan module and determine the current static pressure range and the current static pressure current fitting relationship corresponding to the previous set speed, if the current set speed is not the maximum set speed.

[0120] The second determining unit is configured to determine the current static pressure corresponding to the current current and set it as the initial static pressure based on the current static pressure-current fitting relationship when the current current is greater than or equal to the current upper limit current value. The current upper limit current value is determined based on the upper limit static pressure value of the current static pressure range and the current fitting relationship.

[0121] The third determining unit is configured to determine the next set speed that is greater than the current set speed as the current set speed when the current is greater than or less than the current upper limit current value.

[0122] In some embodiments, the first determining module 810 further includes:

[0123] The fourth determining unit is configured to, when the current set speed is the maximum set speed, if the current running time of the fan module at the current set speed reaches the first set time, obtain the current current of the fan module and determine the current static pressure range and the current static pressure current fitting relationship corresponding to the previous set speed.

[0124] The fifth determining unit is configured to determine the current static pressure corresponding to the current current based on the current static pressure-current fitting relationship.

[0125] The sixth determining unit is configured to determine the larger value between the current static pressure and the minimum set static pressure as the initial static pressure, or to determine the smaller value between the current static pressure and the upper limit static pressure value of the current static pressure range as the initial static pressure.

[0126] In some embodiments, it also includes:

[0127] The monitoring and determination module is configured to acquire the second current of the fan module corresponding to the second set time when the fan module has been running at the target speed for a second set time; periodically monitor the current of the fan module and obtain the absolute difference between each monitored current and the second current; and determine that the air conditioner enters the constant air volume mode of the current set air volume when m consecutive absolute differences of current are greater than or equal to the set current value, where m≥2.

[0128] The air conditioning control process for the ducted air conditioning control device is further described below with reference to the embodiments.

[0129] In this embodiment, the static pressure range corresponding to the operation of the duct air conditioner is 0 to 500 Pa, the first set time can be 3 minutes, the second set time is 5 minutes, the set current value is 0.2 A, and m = 2.

[0130] Figure 9 This is a schematic diagram of a ducted air conditioning control device provided in an embodiment of this disclosure. Figure 9As shown, the air conditioning control device 800 for ducted air conditioners includes: a first determining module 810, a second determining module 820, a control module 830, an entry determining module 840, a first test saving module 850, a second test saving module 860, and a monitoring determining module 870. The first determining module 810 includes: a first determining unit 811, a second determining unit 812, a third determining unit 813, a fourth determining unit 814, a fifth determining unit 815, and a sixth determining unit 816.

[0131] In this embodiment, the first test saving module 850 passed the test and has saved the correspondence shown in Table 1, and the second test saving module 860 passed the test and has saved the correspondence shown in Table 2.

[0132] After the indoor unit of the air conditioner is powered on, it receives a constant air volume mode operation command carrying the current set air volume for the first time, and enters the determination unit 840 to determine that the duct air conditioner enters the constant air volume mode operation with the current set air volume.

[0133] In this way, the duct air conditioner controls the fan module to run at the currently set speed, and when the corresponding running time reaches 3 minutes, it obtains the current i of the fan module. d Where the current set speed is not the maximum set speed, the first determining unit 811 in the first determining module 810 determines the current static pressure range and the current static pressure current fitting relationship corresponding to the current set speed according to Table 1, and obtains the current upper limit current value i corresponding to the upper limit static pressure value of the current static pressure range. s Therefore, i d ≥i s At that time, the second determining unit 812 determines the current static pressure corresponding to the current current based on the current static pressure-current fitting relationship and sets it as the initial static pressure. And i d s When the speed is greater than the current set speed, the third determining unit 813 determines the next set speed as the current set speed, and the duct machine control fan module continues to operate at the current set speed.

[0134] The current set speed is the maximum set speed. The fourth determining unit 814, based on Table 1, determines the current static pressure range and the current static pressure-current fitting relationship corresponding to the current set speed. The fifth determining unit 815, based on the current static pressure-current fitting relationship, determines the current static pressure Pst corresponding to the current current. Therefore, if 0 ≤ Pst ≤ 500, the sixth determining unit determines the current static pressure Pst as the initial static pressure. Otherwise, the sixth determining unit 816 determines the larger value between the current static pressure and 0 as the initial static pressure, or the smaller value between the current static pressure and 500 Pa as the initial static pressure.

[0135] ​The second determining module 820 determines the current speed-static pressure fitting relationship corresponding to the current set air volume according to Table 2, and determines the target speed corresponding to the initial static pressure based on the current speed-static pressure fitting relationship. Therefore, the control module 830 controls the fan module to operate according to the target speed.

[0136] When the running time at the target speed reaches 5 minutes, the monitoring and determination module 870 acquires the corresponding second current I at this time. t And at the time corresponding to the 30-second interval, the current I of the wind turbine module is obtained. i And, the corresponding absolute current difference ΔI is obtained. i =|I i -I t │. And ΔI i ≥0.2A, and ΔI i-1 If the pressure is ≥0.2A, the monitoring and determination module 870 can put the air conditioner into the constant air volume mode of the current set air volume, and continue to call the first determination module 810, the second determination module 820 and the control module 830 to continue to re-detect the actual static pressure and correct the target speed.

[0137] As can be seen, in this embodiment, the air conditioner operates within a static pressure range of 0–500 Pa. The device for controlling the ducted air conditioner can determine the initial static pressure of the ducted air conditioner through one, two, or three constant-speed controls of the fan module. Then, it determines the target speed of the fan module that matches the initial static pressure and controls the fan module to operate at the target speed, thus achieving constant airflow control of the air conditioner. This expands the application scenarios of constant airflow control for ducted air conditioners, improves the effect of the constant airflow mode operation, and consequently improves the performance of the air conditioner. Furthermore, by monitoring the current of the fan speed module, the actual initial static pressure can be re-detected, and the target speed can be corrected, further improving the effect of the constant airflow mode operation and enhancing the performance of the air conditioner.

[0138] Combination Figure 10 This disclosure provides an apparatus 900 for controlling ducted air conditioning units, comprising:

[0139] The processor 1000 and memory 1001 may further include a communication interface 1002 and a bus 1003. The processor 1000, communication interface 1002, and memory 1001 can communicate with each other via the bus 1003. The communication interface 1002 can be used for information transmission. The processor 1000 can call logical instructions stored in the memory 1001 to execute the method for controlling a ducted air conditioner as described in the above embodiment.

[0140] Furthermore, the logic instructions in the aforementioned memory 1001 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0141] The memory 1001, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 1000 executes functional applications and data processing by running the program instructions / modules stored in the memory 1001, that is, it implements the method for controlling ducted air conditioners in the above method embodiments.

[0142] The memory 1001 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 1001 may include high-speed random access memory and may also include non-volatile memory.

[0143] This disclosure provides a control device for a ducted air conditioning unit, including: a processor and a memory storing program instructions, wherein the processor is configured to execute a method for controlling a ducted air conditioning unit when executing the program instructions.

[0144] Combination Figure 11 This disclosure provides an air conditioner 1100, including: an air conditioner body and the aforementioned air conditioning control device 800 (900) for ducted air conditioners. The air conditioning control device 800 (900) is installed on the air conditioner body. The installation relationship described herein is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the air conditioning control device 800 (900) for ducted air conditioners can be adapted to feasible air conditioner bodies to achieve other feasible embodiments.

[0145] This disclosure provides a storage medium storing program instructions that, when executed, perform the method described above for controlling a ducted air conditioning unit.

[0146] This disclosure provides a computer program product, which includes a computer program stored on a storage medium. The computer program includes program instructions, which, when executed by a computer, cause the computer to perform the above-described method for controlling ducted air conditioning units.

[0147] The aforementioned storage medium can be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0148] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0149] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or replace parts and features of other embodiments. The scope of the embodiments of this disclosure includes the entire scope of the claims and all available equivalents of the claims. While the terms “first,” “second,” etc., may be used in this application to describe elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be called a second element without changing the meaning of the description, and similarly, a second element may be called a first element, provided that all occurrences of “first element” are consistently renamed and all occurrences of “second element” are consistently renamed. First and second elements are both elements, but may not be the same element. Moreover, the terminology used in this application is only for describing embodiments and is not intended to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to also include the plural forms. Similarly, the term “and / or” as used herein means including one or more of the associated listed elements and all possible combinations thereof. Additionally, when used herein, the terms “comprise” and its variations “comprises” and / or “comprising” refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase “comprising an…” does not exclude the presence of additional identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0150] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0151] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0152] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling ducted air conditioning systems, characterized in that, include: When the ducted air conditioner is determined to be operating in constant air volume mode with the current set air volume, the initial static pressure of the ducted air conditioner is determined by one or more constant speed control of the fan module. The set speed corresponding to constant speed control increases sequentially. Based on the fitting relationship between the current speed and static pressure corresponding to the current set air volume, determine the target speed corresponding to the initial static pressure; The fan module of the ducted air conditioner is controlled to operate according to the target rotation speed; Before determining the initial static pressure of the ducted air conditioner, the method further includes: At different speeds, the static pressure range of the air conditioner is tested, and the current of the fan module at different static pressures at each speed is obtained. The static pressure and its corresponding current are fitted to obtain the corresponding static pressure-current fitting relationship. The speed, the corresponding static pressure range, and the static pressure-current fitting relationship are saved. The determination of the initial static pressure of the ducted air conditioner includes: When the current set speed is the maximum set speed, if the current running time of the fan module at the current set speed reaches the first set time, the current current of the fan module is obtained, and the current static pressure range and the fitting relationship between the current static pressure and current corresponding to the previous set speed are determined. Based on the current static pressure-current fitting relationship, determine the current static pressure corresponding to the current current; The larger value between the current static pressure and the minimum set static pressure is determined as the initial static pressure, or the smaller value between the current static pressure and the upper limit static pressure value of the current static pressure range is determined as the initial static pressure.

2. The method according to claim 1, characterized in that, The process of determining whether the ducted air conditioner enters the constant air volume mode with the currently set air volume includes: When the indoor unit of the air conditioner is powered on, if a command for constant air volume mode operation with the current set air volume is received for the first time, the air conditioner will be confirmed to enter the constant air volume mode operation with the current set air volume. If the cumulative running time of the air conditioner in constant air volume mode at the current set air volume is greater than the set cumulative running time, the air conditioner will be determined to enter constant air volume mode at the current set air volume. When the indoor unit of the air conditioner is powered on, if the ultra-high fan speed setting is received for the first time, the air conditioner will enter the constant air volume mode corresponding to the current set air volume of the ultra-high fan speed setting. Before determining the initial static pressure of the ducted air conditioner, or before determining the target speed corresponding to the initial static pressure, the air conditioner switches to the first mode of operation. After completing the first mode of operation, upon receiving the command to operate at the high-speed setting, the air conditioner enters the constant air volume mode corresponding to the current set air volume of the high-speed setting. The first mode includes: shutdown mode, defrost mode, oil return mode, anti-cold air mode, or fan speed switching mode, etc.

3. The method according to claim 1, characterized in that, Before determining the initial static pressure of the ducted air conditioner, the method further includes: Under a set airflow, the static pressure of the air conditioner at different speeds is tested, and the static pressure is fitted to each speed to obtain the corresponding speed-static pressure fitting relationship. The set airflow and the corresponding speed-static pressure fitting relationship are saved.

4. The method according to claim 1, characterized in that, The determination of the initial static pressure of the ducted air conditioner includes: If the current set speed is not the maximum set speed, and the current running time of the fan module at the current set speed reaches the first set time, the current current of the fan module is obtained, and the current static pressure range and the fitting relationship between the current static pressure and current corresponding to the previous set speed are determined. If the current current is greater than or equal to the current upper limit current value, the current static pressure corresponding to the current current is determined and set as the initial static pressure according to the current static pressure-current fitting relationship. The current upper limit current value is determined based on the upper limit static pressure value of the current static pressure range and the current fitting relationship. If the current current is less than the current upper limit current value, the next set speed that is greater than the current set speed will be determined as the current set speed, and constant speed control will continue to be performed according to the current set speed.

5. The method according to any one of claims 1-4, characterized in that, After the fan module of the ducted air conditioner is operated, it includes: When the operating time of the fan module at the target speed reaches the second set time, the second current of the fan module corresponding to the second set time is obtained; The current of the fan module is monitored periodically to obtain the absolute difference between each monitored current and the second current. If the absolute difference of current for m consecutive times is greater than or equal to the set current value, the air conditioner is determined to enter the constant air volume mode of the current set air volume, where m≥2.

6. A device for controlling ducted air conditioning units, characterized in that, include: The first determining module is configured to determine the initial static pressure of the ducted air conditioner by one or more constant speed control of the fan module when the ducted air conditioner is determined to be operating in constant air volume mode with the current set air volume. The set speed corresponding to the constant speed control increases sequentially. The second determining module is configured to determine the target speed corresponding to the initial static pressure based on the fitting relationship between the current speed and static pressure corresponding to the current set air volume; The control module is configured to control the operation of the fan module of the ducted air conditioner according to the target speed; The first test and storage module is configured to perform static pressure range tests on the air conditioner at different speeds, obtain the current of the fan module at different static pressures at each speed, and fit the static pressure and its corresponding current to obtain the corresponding static pressure and current fitting relationship, and save the speed, the corresponding static pressure range and the static pressure and current fitting relationship. The first determination module includes: The fourth determining unit is configured to, when the current set speed is the maximum set speed, if the current running time of the fan module at the current set speed reaches the first set time, obtain the current current of the fan module and determine the current static pressure range and the current static pressure current fitting relationship corresponding to the previous set speed. The fifth determining unit is configured to determine the current static pressure corresponding to the current current based on the current static pressure-current fitting relationship; The sixth determining unit is configured to determine the larger value between the current static pressure and the minimum set static pressure as the initial static pressure, or to determine the smaller value between the current static pressure and the upper limit static pressure value of the current static pressure range as the initial static pressure.

7. A device for controlling a ducted air conditioner, the device comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to perform, when executing the program instructions, the method for controlling a ducted air conditioning unit as described in any one of claims 1 to 5.

8. An air conditioner, characterized in that, include: Air conditioner unit; The device for controlling a ducted air conditioner as described in claim 6 or 7 is installed on the air conditioner body.

9. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the method for controlling a ducted air conditioning unit as described in any one of claims 1 to 5.

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