Air conditioner control method and device for duct type air conditioner, air conditioner and storage medium

Abstract

The invention relates to the technical field of intelligent air conditioners, and discloses a method and device for controlling a duct type air conditioner, the air conditioner and a storage medium. The method comprises the steps that under the condition that it is determined that the ducted air conditioner operates in a constant air volume mode with the current set air volume, the initial static pressure of the ducted air conditioner is determined through one-time or multiple-time constant speed control over a fan module, and the set rotating speeds corresponding to the constant speed control are sequentially increased; determining a target rotating speed corresponding to the initial static pressure according to a current rotating speed static pressure fitting relation corresponding to the current set air volume; and according to the target rotating speed, a fan module of the ducted air conditioner is controlled to operate. Therefore, the application scene of constant air volume control of the ducted air conditioner is expanded, and the performance of the air conditioner is improved.

Description

Technical Field

[0001] The present application relates to the field of intelligent air conditioning technology, for example, to a method, device, air conditioner and storage medium for controlling ducted air conditioners. Background Art

[0002] Air conditioners are now a must-have appliance for home and office use, especially in summer and winter, when they are used for a long time. Duct air conditioners can also be called air conditioner duct air conditioners or duct air conditioners. The indoor unit of the duct air conditioner is the same as a terminal of the central air conditioner (fan coil unit), and both are in the form of suspended ceilings. From the outside, there is no difference between them. However, compared with central air conditioners, duct air conditioners are cheaper, easier to maintain, and more suitable for Chinese people's air conditioning usage habits.

[0003] At present, the constant air volume control method of duct air conditioners includes: detecting the initial static pressure of the air duct, then determining the target wind speed that matches the initial static pressure, and controlling the fan module to operate at the target wind speed to achieve constant air volume control of the air conditioner. Among them, the current or power value of the duct air conditioner at a certain speed can be detected, and the corresponding initial static pressure can be determined by a current / static pressure or power / static pressure relationship. However, high-static pressure duct air conditioners generally operate within a large static pressure range, for example: 0~500Pa, and the fan module cannot operate normally at a single speed within the complete static pressure range. Therefore, it is difficult to accurately determine the initial static pressure of the duct air conditioner, and the effect of the constant air volume mode operation of the air conditioner needs to be strengthened.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The embodiments of the present disclosure provide a method, an apparatus, an air conditioner and a storage medium for controlling a ducted air conditioner, so as to solve the technical problem that the effect of the constant air volume mode operation of the air conditioner needs to be improved.

[0007] In some embodiments, the method comprises:

[0008] When it is determined that the ducted air conditioner enters the constant air volume mode of the current set air volume, the initial static pressure of the ducted air conditioner is determined by one or more constant speed controls of the fan module, wherein the set speeds corresponding to the constant speed controls are increased sequentially;

[0009] Determine the target speed corresponding to the initial static pressure based on the current speed-static pressure fitting relationship corresponding to the current set air volume;

[0010] According to the target speed, the fan module of the duct air conditioner is controlled to operate.

[0011] In some embodiments, the apparatus comprises:

[0012] The first determination module 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 it is determined that the duct air conditioner enters the constant air volume mode of the current set air volume, wherein the set speeds corresponding to the constant speed controls are increased sequentially;

[0013] A second determination module is configured to determine a target speed corresponding to the initial static pressure according to a current speed-static pressure fitting relationship corresponding to a current set air volume;

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

[0015] In some embodiments, the device for controlling air conditioning of a duct unit includes a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned method for controlling air conditioning of a duct unit when executing the program instructions.

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

[0017] In some embodiments, the storage medium stores program instructions, and when the program instructions are run, the above-mentioned method for controlling the air conditioning of the duct unit is executed.

[0018] The method, device and air conditioner for controlling a ducted air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] A duct air conditioner operating in a larger static pressure range can determine the initial static pressure of the duct air conditioner by controlling the fan module at a constant speed once or multiple times, and then determine the target speed of the fan module that matches the initial static pressure, and control the fan module to operate 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 the duct air conditioner are expanded, the operation effect of the constant air volume mode of the air conditioner is improved, and the performance of the air conditioner is thereby improved.

[0020] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 It is a flow chart of a method for controlling a ducted air conditioner provided by an embodiment of the present disclosure;

[0023] Figure 2 It is a schematic diagram of static pressure and current at a set speed provided by an embodiment of the present disclosure;

[0024] Figure 3 It is a schematic diagram of static pressure and current at a set speed provided by an embodiment of the present disclosure;

[0025] Figure 4 It is a schematic diagram of static pressure and current at a set speed provided by an embodiment of the present disclosure;

[0026] Figure 5 It is a schematic diagram of the speed and static pressure under a set air volume provided by an embodiment of the present disclosure;

[0027] Figure 6 It is a schematic diagram of the speed and static pressure under a set air volume provided by an embodiment of the present disclosure;

[0028] Figure 7 It is a flow chart of a method for controlling a ducted air conditioner provided by an embodiment of the present disclosure;

[0029] Figure 8 It is a structural schematic diagram of a duct air conditioner control device provided by an embodiment of the present disclosure;

[0030] Fig. 9 It is a structural schematic diagram of a duct air conditioner control device provided by an embodiment of the present disclosure;

[0031] Fig.10 It is a structural schematic diagram of a duct air conditioner control device provided by an embodiment of the present disclosure;

[0032] Fig.11 It is a schematic diagram of an air conditioner provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0034] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

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

[0036] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0037] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0038] In the disclosed embodiments, the duct air conditioner can achieve constant air volume control not only within the normal static pressure range, but also within a larger static pressure range, for example: 0~500Pa. The initial static pressure of the duct air conditioner can be determined by one or more constant speed controls of the fan module, and then the target speed of the fan module matching the initial static pressure is determined, and the fan module is controlled to operate 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 the duct air conditioner are expanded, the operation effect of the constant air volume mode of the air conditioner is improved, and the performance of the air conditioner is increased.

[0039] Figure 1 FIG. 1 is a flow chart of a method for controlling a ducted air conditioner provided by an embodiment of the present disclosure. Figure 1 As shown in the figure, the process of duct air conditioning control includes:

[0040] Step 101: When it is determined that the duct air conditioner enters the constant air volume mode of the current set air volume, the initial static pressure of the duct air conditioner is determined by one or more constant speed controls of the fan module, wherein the set speeds corresponding to the constant speed controls are increased sequentially.

[0041] After the indoor unit of the air conditioner is powered on, when the constant air volume mode operation instruction with the current set air volume is received for the first time through the wire controller, that is, when the indoor unit of the air conditioner is powered on, if the constant air volume mode operation instruction with the current set air volume is received for the first time, it can be determined that the air conditioner enters the constant air volume mode operation with the current set air volume, that is, it is necessary to determine the initial static pressure of the duct air conditioner.

[0042] The duct air conditioner 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 step, two steps or more steps, and the current of the fan module at each speed can be detected to determine the initial static pressure, that is, the initial static pressure of the duct air conditioner can be determined through one or more constant speed controls of the fan module.

[0043] The set speed corresponding to the constant speed control increases in sequence. For example, the set speed can be 955 rpm for the first constant speed control, 1150 rpm for the second constant speed control, and 1250 rpm for the third constant speed control. Of course, it is not limited to this, and it can also be divided into four constant speed controls, and the corresponding set speeds can be 1000 rpm, 1100 rpm, 1200 rpm, 1300 rpm, etc.

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

[0045] Figure 2 , Figure 3 and Figure 4 They are schematic diagrams of static pressure and current at a set speed provided by the embodiments of the present disclosure. The static pressure range corresponding to the operation of the duct air conditioner is 0-500Pa.

[0046] like Figure 2 As shown, n1 = 955 revolutions, the corresponding static pressure range obtained by the test can be 0 ~ 240Pa, and through the test, the current of the fan module under different static pressures can be obtained, such as Figure 2 As shown in the above points, for example: when the static pressure is 150Pa, the current of the fan module obtained by test is 6A. Therefore, according to 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, the corresponding static pressure range obtained by the test is 240 ~ 306Pa. Through the test, the current of the fan module under different static pressures can be obtained, such as Figure 3 As shown in the above points, for example, when the static pressure is 320Pa, the current of the fan module obtained by the test is about 6.8A. Therefore, according to each static pressure and its corresponding current, 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, the corresponding static pressure range obtained by test can be 360 ​​~ 500Pa. Through the test, the current of the fan module under different static pressures can be obtained, such as Figure 4 As shown in the above points, for example, when the static pressure is 420Pa, the current of the fan module obtained by the test is about 7.2A. Therefore, according to each 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 speed and the corresponding static pressure-current fitting relationship, the speed and the corresponding static pressure range and static pressure-current fitting relationship can be saved, as shown in Table 1.

[0050] Table 1 is a correspondence between the rotation speed, static pressure range and static pressure current fitting relationship obtained after a test provided by an embodiment of the present disclosure. Among them, the static pressure range of the air conditioner operation is 0-500Pa.

[0051] Fan module speed Static pressure range Static pressure 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] Among them, 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 of the present disclosure are not limited to this, and the set speeds may be n1, n2, or n1, n2, n3, n4, etc., respectively. Thus, the static pressure range test of the air conditioner may be performed at different speeds to obtain the current of the fan module at each speed and different static pressure, and fit is performed based on each static pressure and its corresponding current to obtain the corresponding static pressure-current fitting relationship, and the speed and the corresponding static pressure range and static pressure-current fitting relationship are saved.

[0055] Before performing one or more constant speed controls on the fan module, the duct air conditioner has saved the speed and the corresponding static pressure range and static pressure current fitting relationship. Therefore, for each constant speed control, if the corresponding initial static pressure can be determined based on the saved speed and the corresponding static pressure range and static pressure current fitting relationship, the next constant speed control can be omitted. If the corresponding initial static pressure cannot be determined, the next constant speed control is required. If the last constant speed control is performed, the corresponding initial static pressure must be determined based on the saved speed and the corresponding static pressure range and static pressure current fitting relationship.

[0056] Therefore, in some embodiments, determining the initial static pressure of the duct air conditioner includes: when the current set speed is not the maximum set speed, if the current running time of the fan module running at the current set speed reaches the first set time, obtaining the current current of the fan module, and determining the current static pressure range corresponding to the previous set speed and the current static pressure-current fitting relationship; 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 according to the current static pressure-current fitting relationship and determining it as the initial static pressure, 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 duct air conditioner also includes: when the current set speed is the maximum set speed, if the current operating time of the fan module running at the current set speed reaches the first set time, obtaining the current current of the fan module, and determining the current static pressure range corresponding to the previous set speed and the current static pressure-current fitting relationship; determining the current static pressure corresponding to the current current according to 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 setting time may be 1 minute, 2 minutes, or 3 minutes, etc. Taking the air conditioner saving Table 1 and the first setting time being 2 minutes as an example, the process of determining the initial static pressure may include: after determining that the duct air conditioner enters the constant air volume mode of the current setting air volume, the fan module is controlled at a speed of 955 for the first time. The speed of 955 is not the maximum setting speed. If the current running time of the fan module running at a speed of 955 reaches 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 is Pst = f1(i) = 52.905i + 437.43, and when Pst = 240, the corresponding current upper limit current value i s , if i d ≥i s When , we can get the initial static pressure = 52.905i d +437.43. If i d s When the next set speed greater than the current set speed is determined as the current set speed, that is, the fan module needs to be controlled at a second constant speed at a speed of 1150.

[0059] 1150 speed is not the maximum setting speed. If the current running time of the fan module at 1150 speed reaches 2 minutes, obtain the current current i of the fan module. d According to 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 get the current upper limit current value i when Pst=360 s , if i d ≥i s When 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 next set speed greater than the current set speed is determined as the current set speed, that is, the fan module needs to be controlled at a speed of 1250 for the second time.

[0060] ​​1250 speed is the maximum setting speed. If the current running time of the fan module at 1250 speed reaches 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, we can get the current static pressure Pst=f3(i)=-7.81259(i d ) 2 +82.812i d +231.8. In this way, if the current static pressure Pst < 0, the initial static pressure = 0pa can be determined, and if the current static pressure Pst> 500, the initial static pressure = 500pa can be determined; and if 0 ≤ Pst ≤ 500, the current static pressure can be determined as the initial static pressure.

[0061] Of course, if the corresponding relationship between the speed, static pressure range and static pressure current fitting relationship is saved, there are multiple set speeds, for example: n1, n2, n3, n4, then if the wind speed module is controlled to run from n1, if during the operation, the corresponding initial static pressure can be determined according to the current current of the fan module, then there is no need to perform constant speed control for the next set speed. If the corresponding initial static pressure cannot be determined, it is necessary to continue the constant speed control for the next set speed until the last set speed n4 is reached. The current static pressure corresponding to the current current can be determined according to the corresponding current fitting relationship, and the corresponding initial static pressure can be determined according to the corresponding operating range and the current static pressure. The details will not be described in detail.

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

[0063] Step 102: Determine the target speed corresponding to the initial static pressure according to the current speed-static pressure fitting relationship 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 also required, that is, under the set air volume, the static pressure of the air conditioner at different speeds is tested, and each speed is fitted with the corresponding static pressure to obtain the corresponding speed-static pressure fitting relationship, and the set air volume and the corresponding speed-static pressure fitting relationship are saved.

[0065] Figure 5 , Figure 6 They are respectively schematic diagrams of the speed and static pressure under a set air volume provided by an embodiment of the present disclosure.

[0066] like Figure 5 As shown, the air volume is set to 7200m 3 / h, so that the static pressure of the air conditioner at different speeds can be obtained through testing, such as Figure 5 As shown in the above points, when the speed is 1200rpm, the corresponding static pressure is 350Pa. Therefore, according to each speed and its corresponding static pressure, Figure 5 The corresponding speed-static pressure fitting relationship can be obtained by fitting the points on the 2 +1.5048x+765.42 is n t =f1(Pst)=-0.0006(Pst) 2 +1.5048Pst+765.42.

[0067] like Figure 6 As shown, the air volume is set to 6800m 3 / h, so that the static pressure of the air conditioner at different speeds can be obtained through testing, such as Figure 6 As shown in the above points, when the speed is 1200rpm, the corresponding static pressure is 400Pa. Therefore, according to each speed and its corresponding static pressure, Figure 6 The corresponding speed-static pressure fitting relationship can be obtained by fitting the points on the 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 speed is obtained, and the set air volume and the corresponding speed-static pressure fitting relationship can be saved, as shown in Table 2.

[0069] Table 2 is a correspondence between a set air volume and a corresponding speed-static pressure fitting relationship obtained after a test provided by an embodiment of the present disclosure.

[0070] Set air volume Speed-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 of the present disclosure are not limited to this, and the set air volumes may be Q1, Q2, Q3, or Q1, Q2, Q3, Q4, etc., respectively. Thus, air conditioning static pressure tests may be performed at different speeds under different air volumes, and each speed may be fitted with the corresponding static pressure to obtain the corresponding speed-static-pressure fitting relationship, and the set air volume and the corresponding speed-static-pressure fitting relationship may be saved.

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

[0074] Take the ducted air conditioner that saves the corresponding relationship shown in Table 2 as an example. If the current set air volume is 6800m 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 duct air conditioner has been determined, that is, Pst is known, so the corresponding speed n can be determined. t , and can be determined as the target speed.

[0075] Step 103: According to the target speed, the fan module of the duct air conditioner is controlled to operate.

[0076] By determining the target speed corresponding to the currently set air volume, the fan module of the duct air conditioner can be controlled to operate at the target speed. In some embodiments, if the operation time of the fan module operating at the target speed reaches the second set time, it can be determined that the duct air conditioner has entered the constant air volume operation state. Among them, the second set time can be 4 minutes, 5 minutes, 6 minutes, or 7 minutes, which can be determined according to the performance of the air conditioner, the area where it is located, etc.

[0077] It can be seen that in the disclosed embodiments, the duct air conditioner can determine the initial static pressure of the duct air conditioner by one or more constant speed control of the fan module, and then determine the target speed of the fan module that matches the initial static pressure, and control the fan module to operate 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 the duct air conditioner are expanded, the operation effect of the constant air volume mode 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 constant air volume mode operation command carrying the currently set air volume is received for the first time through the wire controller, the initial static pressure of the duct air conditioner needs to be determined. The embodiments of the present disclosure are not limited thereto. In order to cope with the situation where the static pressure changes due to dirt blockage, there may be multiple situations in which the actual static pressure needs to be re-detected and the target speed needs to be corrected. That is, in some embodiments, determining that the duct air conditioner enters the constant air volume mode operation at the current set air volume includes: when the cumulative running time of the air conditioner in the constant air volume mode at the current set air volume is greater than the set cumulative running time, determining that the air conditioner enters the constant air volume mode operation at the current set air volume; when the indoor unit of the air conditioner is powered on, if an ultra-high wind speed gear operation instruction is received for the first time, determining that the air conditioner enters the constant air volume mode operation at the current set air volume corresponding to the ultra-high wind speed gear; before determining the initial static pressure of the duct air conditioner, or before determining the target speed corresponding to the initial static pressure, the air conditioner switches to the first mode operation, and after completing the first mode operation, when a strong wind speed gear operation instruction is received, determining that the air conditioner enters the constant air volume mode operation at the current set air volume corresponding to the strong wind speed gear, wherein the first mode includes: shutdown mode, defrost mode, oil return mode, cold wind prevention mode, or windshield switching mode, etc.

[0079] Among them, the set cumulative running time can be 72h, 96h, etc. In this way, if the cumulative running time of the duct air conditioner in constant air volume mode with a certain set air volume is greater than 72h or 96h, it is necessary to re-detect the actual static pressure and correct the target speed, that is, to determine that the air conditioner enters the constant air volume mode of the current set air volume, it is necessary to determine the initial static pressure of the duct air conditioner through the above step 101, and determine the target speed through the above step 102, and control the fan module of the duct air conditioner to operate according to the target speed.

[0080] The fan module of the duct air conditioner may also correspond to multiple gears, such as: ultra-high wind speed gear, strong wind speed gear, medium wind speed gear, low wind speed gear, etc. In this way, if the indoor unit of the air conditioner is powered on and receives the ultra-high wind speed gear operation instruction for the first time, it is also necessary to re-detect the actual static pressure and correct the target speed, that is, to determine that the air conditioner enters the constant wind volume mode corresponding to the ultra-high wind speed gear.

[0081] When the duct 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 cold wind prevention control, and receives a strong gear operation instruction again, that is, before determining the initial static pressure of the duct air conditioner, or before determining the target speed corresponding to the initial static pressure, the air conditioner switches to the first mode of operation, and after completing the first mode operation, when receiving a strong wind speed gear operation instruction, it is also necessary to re-detect the actual static pressure and correct the target speed, that is, to determine that the air conditioner enters the constant air volume mode of the current set air volume corresponding to the ultra-high wind speed gear.

[0082] The first mode includes: shutdown mode, defrost mode, oil return mode, cold wind prevention mode, or windshield switching mode, etc. The duct air conditioner can complete the operation of the first mode according to the corresponding control logic, and the details will not be repeated one by one.

[0083] In some embodiments, if the running time of the fan module running at the target speed reaches the second set time, it can be determined that the duct air conditioner has entered the constant air volume operation state. In addition, after the air conditioner enters the constant air volume operation state, it is also possible to monitor the current of the fan module to determine whether the static pressure has changed, whether the actual static pressure needs to be re-detected, and the target speed is corrected. That is, after the fan module of the duct air conditioner is controlled to operate, it includes: when the running time of the fan module running at the target speed reaches the second set time, obtaining the second current of the fan module corresponding to the second set time; regularly monitoring the current of the fan module to obtain the absolute current difference between each monitored current and the second current; when m consecutive current absolute differences are greater than or equal to the set current value, it is determined that the air conditioner enters the constant air volume mode operation of the current set air volume, where m≥2.

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

[0085] It can be seen that in the disclosed embodiments, not only is it necessary to determine the initial static pressure of the duct air conditioner when operating in the constant air volume mode of 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 conditions such as dirt, blockage, state switching, etc., thereby further improving the operation effect of the constant air volume mode of the air conditioner and further improving the performance of the air conditioner.

[0086] The operation flow is collected into a specific embodiment below to illustrate the air conditioning control process for a duct unit provided by the embodiment of the present invention.

[0087] In one embodiment of the present disclosure, the duct air conditioner is referred to as the duct air conditioner. Through testing, the corresponding relationships shown in Table 1 and Table 2 have been saved. The static pressure range corresponding to the operation of the duct air conditioner is 0-500Pa, the first setting time can be 3min, the second setting time is 5min, the setting current value is 0.2A, and m=2.

[0088] Figure 7 FIG. 1 is a flow chart of a method for controlling a ducted air conditioner provided by an embodiment of the present disclosure. Figure 7 As shown in the figure, the duct air conditioning control process includes:

[0089] Step 701: Determine whether the ducted air conditioner enters the constant air volume mode of the current set air volume. If yes, execute step 702; otherwise, return to step 701.

[0090] In this way, it can be determined in a variety of situations that the duct air conditioner enters the constant air volume mode of the current set air volume, including: after the indoor unit of the air conditioner is powered on, it receives the constant air volume mode operation instruction 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 wind speed gear operation instruction for the first time; or, when the static pressure detection or speed calculation is not completed due to gear shifting, shutdown, defrosting, oil return, and cold wind prevention control, the duct air conditioner enters the strong gear operation again, etc.

[0091] Step 702: According to the order of the set wind speed from small to large, the duct machine controls the fan module to run at the current set speed, and when the corresponding running time reaches 3 minutes, obtains the current current i of the fan module d .

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

[0093] Step 703: Determine whether the current set speed is the maximum set speed. If yes, execute step 708; if no, execute step 704.

[0094] Step 704: According to Table 1, the duct machine determines the current static pressure range and the current static pressure current fitting relationship 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 it true? If so, go to step 706; otherwise, go to step 707.

[0096] Step 706: The duct machine determines the current static pressure corresponding to the current current according to the current static pressure-current fitting relationship and determines it as the initial static pressure. Then the process goes to step 712.

[0097] Step 707: The duct machine 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 machine 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 according to the current static pressure current fitting relationship.

[0099] Step 709: Determine whether 0≤Pst≤500 is true. If so, execute step 710; otherwise, execute step 711.

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

[0101] Step 711: The duct machine 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 500 Pa as the initial static pressure, and proceeds to step 712.

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

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

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

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

[0106] Step 716: ΔI i ≥0.2A? If so, go to step 717; otherwise, go back to step 715.

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

[0108] It can be seen that in this embodiment, the duct air conditioner operating within the static pressure range of 0 to 500 Pa can determine the initial static pressure of the duct air conditioner by controlling the fan module at a fixed speed once, twice or three times, and then determine the target speed of the fan module that matches the initial static pressure, and control the fan module to operate at the target speed to achieve constant air volume control of the air conditioner. In this way, the application scenarios of the constant air volume control of the duct air conditioner are expanded, the effect of the constant air volume mode operation of the air conditioner is improved, and the performance of the air conditioner is improved. In addition, the actual initial static pressure can be re-detected by monitoring the current of the wind speed module, and the target speed can be corrected, so as to further improve the effect of the constant air volume mode operation of the air conditioner and further improve the performance of the air conditioner.

[0109] According to the above process for air conditioning control of a duct unit, a device for air conditioning control of a duct unit can be constructed.

[0110] Figure 8 Schematic diagram of a structure of a duct air conditioner control device provided by the embodiment of the present disclosure. The air conditioner is equipped with a water-washed fresh air module, such as Figure 8 As shown, the duct air conditioner control device 800 includes: a first determination module 810 , a second determination module 820 and a control module 830 .

[0111] The first determination 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 it is determined that the duct air conditioner enters the constant air volume mode of the current set air volume, wherein the set speeds corresponding to the constant speed control are increased sequentially.

[0112] The second determination module 820 is configured to determine the target speed corresponding to the initial static pressure according to the current speed static pressure fitting relationship corresponding to the current set air volume;

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

[0114] In some embodiments, it also includes: entering a determination module, which is configured to determine that the air conditioner enters the constant air volume mode operation with the current set air volume when the constant air volume mode operation instruction with the current set air volume is received for the first time when the indoor unit of the air conditioner is powered on; when the cumulative running time of the air conditioner in the constant air volume mode operation with the current set air volume is greater than the set cumulative running time, determine that the air conditioner enters the constant air volume mode operation with the current set air volume; when the indoor unit of the air conditioner is powered on, if the ultra-high wind speed gear operation instruction is received for the first time, determine that the air conditioner enters the constant air volume mode operation with the current set air volume corresponding to the ultra-high wind speed gear; before determining the initial static pressure of the duct air conditioner, or before determining the target speed corresponding to the initial static pressure, the air conditioner switches to the first mode of operation, and after completing the first mode of operation, when a strong wind speed gear operation instruction is received, determine that the air conditioner enters the constant air volume mode operation with the current set air volume corresponding to the strong wind speed gear, wherein the first mode includes: shutdown mode, defrost mode, oil return mode, cold wind protection mode, or windshield switching mode, etc.

[0115] In some embodiments, it also includes:

[0116] The first test saving module is configured to perform a static pressure range test of the air conditioner at different speeds, obtain the current of the fan module at different static pressures at each speed, and perform fitting according to each static pressure and its corresponding current to obtain a corresponding static pressure-current fitting relationship, and save the speed and the corresponding static pressure range and static pressure-current fitting relationship;

[0117] The second test saving module is configured to test the static pressure of the air conditioner at different speeds under the set air volume, and fit each speed with the corresponding static pressure 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 determination module 810 includes:

[0119] The first determination unit is configured to 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 when the current operating time of the fan module running at the current set speed reaches the first set time when the current set speed is not the maximum set speed.

[0120] The second determination unit is configured to determine the current static pressure corresponding to the current current and determine 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, wherein 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 greater than the current set speed as the current set speed when the current 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] a fourth determining unit configured to obtain a current current of the fan module and determine a current static pressure range and a current static pressure current fitting relationship corresponding to the previous set speed when the current set speed is the maximum set speed and the current running time of the fan module running at the current set speed reaches a first set time;

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

[0125] The sixth determination unit is configured to determine a larger value between the current static pressure and the minimum set static pressure as the initial static pressure, or to determine a smaller value between the current static pressure and an 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 obtain a second current of the fan module corresponding to the second set time when the operating time of the fan module running at the target speed reaches a second set time; regularly monitor the current of the fan module to obtain the absolute current difference between each monitored current and the second current; when m consecutive current absolute differences are greater than or equal to the set current value, determine that the air conditioner enters the constant air volume mode of the current set air volume, where m≥2.

[0128] The air conditioning control process of the air conditioning control device for a duct unit is further described below in conjunction with the embodiments.

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

[0130] Fig. 9 Schematic diagram of a structure of a duct air conditioner control device provided by an embodiment of the present disclosure. Fig. 9As shown, the air conditioning control device 800 for a duct unit includes: a first determination module 810, a second determination module 820, a control module 830, an entry determination module 840, a first test saving module 850, a second test saving module 860, and a monitoring determination module 870, wherein the first determination module 810 includes: a first determination unit 811, a second determination unit 812, a third determination unit 813, a fourth determination unit 814, a fifth determination unit 815 and a sixth determination unit 816.

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

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

[0133] In this way, the duct machine controls the fan module to run at the current set speed, and when the corresponding running time reaches 3 minutes, the current current i of the fan module is obtained. d Among them, the current set speed is not the maximum set speed. The first determination unit 811 in the first determination 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 . Thus, i d ≥i s When , the second determination unit 812 determines the current static pressure corresponding to the current current according to the current static pressure current fitting relationship and determines it as the initial static pressure. d s When the third determining unit 813 determines the next set speed greater than the current set speed as the current set speed, the duct fan controls the fan module to continue to operate at the current set speed.

[0134] The current set speed is the maximum set speed. The fourth determination unit 814 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 the fifth determination unit 815 determines the current static pressure Pst corresponding to the current current according to the current static pressure current fitting relationship. Thus, 0≤Pst≤500, the sixth determination unit determines the current static pressure Pst as the initial static pressure, otherwise, the sixth determination unit 816 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.

[0135] ​The second determination 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 according to the current speed static pressure fitting relationship. Thus, 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 determining module 870 obtains the corresponding second current I t , and at the time corresponding to the interval of 30s, obtain the fan module current I i , and the corresponding current absolute difference ΔI i =│I i -I t │. And ΔI i ≥0.2A, and ΔI i-1 ≥0.2A, the monitoring and determining module 870 can cause the air conditioner to enter the constant air volume mode of the current set air volume, continue to call the first determining module 810, the second determining module 820 and the control module 830, continue to re-detect the actual static pressure, and correct the target speed.

[0137] It can be seen that in this embodiment, the air conditioner operates within a static pressure range of 0 to 500 Pa. The device for controlling the duct air conditioner can determine the initial static pressure of the duct air conditioner by controlling the fan module at a fixed speed once, twice or three times, and then determine the target speed of the fan module that matches the initial static pressure, and control the fan module to operate at the target speed to achieve constant air volume control of the air conditioner. In this way, the application scenarios of the constant air volume control of the duct air conditioner are expanded, the effect of the constant air volume mode operation of the air conditioner is improved, and the performance of the air conditioner is improved. In addition, the actual initial static pressure can be re-detected by monitoring the current of the wind speed module, and the target speed can be corrected, so as to further improve the effect of the constant air volume mode operation of the air conditioner and further improve the performance of the air conditioner.

[0138] Combination Fig.10 The embodiment of the present disclosure provides a device 900 for controlling a ducted air conditioner, comprising:

[0139] The processor 1000 and the memory 1001 may also include a communication interface 1002 and a bus 1003. The processor 1000, the communication interface 1002, and the memory 1001 may communicate with each other through the bus 1003. The communication interface 1002 may be used for information transmission. The processor 1000 may call the logic instructions in the memory 1001 to execute the method for controlling the air conditioner of the duct unit in the above embodiment.

[0140] In addition, the logic instructions in the above-mentioned memory 1001 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0141] The memory 1001 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 1000 executes the function application and data processing by running the program instructions / modules stored in the memory 1001, that is, the method for controlling the air conditioner of the duct unit in the above method embodiment is implemented.

[0142] The memory 1001 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 1001 may include a high-speed random access memory and may also include a non-volatile memory.

[0143] An embodiment of the present disclosure provides an air conditioning control device for a duct unit, comprising: a processor and a memory storing program instructions, wherein the processor is configured to execute an air conditioning control method for a duct unit when executing the program instructions.

[0144] Combination Fig.11 The embodiment of the present disclosure provides an air conditioner 1100, including: an air conditioner body, and the above-mentioned air conditioner control device 800 (900) for a duct unit. The air conditioner control device 800 (900) for a duct unit is installed on the air conditioner body. The installation relationship described here 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. It can be understood by those skilled in the art that the air conditioner control device 800 (900) for a duct unit can be adapted to a feasible air conditioner body, thereby realizing other feasible embodiments.

[0145] An embodiment of the present disclosure provides a storage medium storing program instructions, which, when run, execute the above-mentioned method for controlling air conditioning of a ducted air conditioner.

[0146] An embodiment of the present disclosure provides a computer program product, which includes a computer program stored on a storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the above-mentioned method for controlling the air conditioner of a duct unit.

[0147] The above-mentioned storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0148] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0149] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, individual components and functions are optional, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments of the present disclosure includes the entire scope of the claims, and all available equivalents of the claims. When used in this application, although the terms "first", "second", etc. may be used in this application to describe each element, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without changing the meaning of the description, the first element can be called the second element, and similarly, the second element can be called the first element, as long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first element and the second element are both elements, but may not be the same element. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates, the singular forms "a", "an" and "the" are intended to include the plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method or device including the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0150] Those skilled in the art will appreciate that the units and algorithm steps of each example 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 performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

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

[0152] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling a ducted air conditioner, characterized in that: include: When it is determined that the ducted air conditioner enters the constant air volume mode of the current set air volume, the initial static pressure of the ducted air conditioner is determined by one or more constant speed controls of the fan module, wherein the set speeds corresponding to the constant speed controls are increased sequentially; Determine the target speed corresponding to the initial static pressure according to the current speed-static pressure fitting relationship corresponding to the current set air volume; According to the target speed, the fan module of the duct air conditioner is controlled to operate.

2. The method according to claim 1, characterized in that The step of determining that the ducted air conditioner enters the constant air volume mode of the currently set air volume comprises: When the indoor unit of the air conditioner is powered on, if a constant air volume mode operation instruction carrying the currently set air volume is received for the first time, the air conditioner is determined to enter the constant air volume mode operation with the currently set air volume; When the accumulated operation time of the air conditioner in the constant air volume mode with the currently set air volume is greater than the set accumulated operation time, it is determined that the air conditioner enters the constant air volume mode with the currently set air volume; When the indoor unit of the air conditioner is powered on, if the ultra-high wind speed gear operation instruction is received for the first time, the air conditioner is determined to enter the constant wind volume mode corresponding to the ultra-high wind speed gear and the current set wind volume; Before determining the initial static pressure of the duct air conditioner, or before determining the target speed corresponding to the initial static pressure, the air conditioner switches to the first mode of operation, and after completing the first mode operation, when receiving a strong wind speed gear operation instruction, the air conditioner is determined to enter the constant air volume mode of the current set air volume corresponding to the strong wind speed gear, wherein the first mode includes: shutdown mode, defrost mode, oil return mode, cold wind protection mode, or windshield switching mode, etc.

3. The method according to claim 1, characterized in that Before determining the initial static pressure of the duct 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. Fitting is performed according to each static pressure and its corresponding current to obtain the corresponding static pressure-current fitting relationship, and the speed and the corresponding static pressure range and static pressure-current fitting relationship are saved; Under the set air volume, test the static pressure of the air conditioner at different speeds, and fit each speed with the corresponding static pressure to obtain the corresponding speed-static pressure fitting relationship, and save the set air volume and the corresponding speed-static pressure fitting relationship.

4. The method according to claim 3, characterized in that Determining the initial static pressure of the duct 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 the first set time, the current current of the fan module is obtained, and the current static pressure range corresponding to the previous set speed and the current static pressure current fitting relationship are determined; When 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 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, the next set speed greater than the current set speed is determined as the current set speed, and the constant speed control is continued according to the current set speed.

5. The method according to claim 3, characterized in that: Determining the initial static pressure of the duct air conditioner also includes: When the current set speed is the maximum set speed, if the current running time of the fan module running 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 corresponding to the previous set speed and the current static pressure current fitting relationship are determined; According to the current static pressure and 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.

6. The method according to any one of claims 1 to 5, characterized in that: After the fan module of the duct air conditioner is controlled to operate, the method includes: When the operation time of the fan module running at the target speed reaches a second set time, obtaining a second current of the fan module corresponding to the second set time; Regularly monitoring the current of the fan module to obtain an absolute current difference between each monitored current and the second current; When m consecutive current absolute differences are greater than or equal to the set current value, it is determined that the air conditioner enters the constant air volume mode of the current set air volume, where m≥2.

7. A device for controlling air conditioning of a ducted air conditioner, characterized in that: include: The first determination module 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 it is determined that the duct air conditioner enters the constant air volume mode of the current set air volume, wherein the set speeds corresponding to the constant speed controls are increased sequentially; A second determination module is configured to determine a target speed corresponding to the initial static pressure according to a current speed-static pressure fitting relationship corresponding to a current set air volume; The control module is configured to control the operation of the fan module of the duct air conditioner according to the target speed.

8. 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 execute the method for controlling ducted air conditioners according to any one of claims 1 to 6 when executing the program instructions.

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

10. A storage medium storing program instructions, characterized in that: When the program instructions are run, the method for controlling the air conditioning of a ducted air conditioner as described in any one of claims 1 to 6 is executed.

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