Wind frequency linkage control method, indoor host, air handling system and storage medium

Abstract

The application discloses a wind frequency linkage control method, an indoor host, an air treatment system and a storage medium, wherein the wind frequency linkage control method is applied to the air treatment system, the air treatment system comprises a first outdoor unit subsystem and a second outdoor unit subsystem, the first outdoor unit subsystem comprises an outdoor fan and a first compressor, the second outdoor unit subsystem comprises a second compressor, and the wind frequency linkage control method comprises the following steps: in the case that only the second outdoor unit subsystem needs to be started, the second compressor is controlled to start at a preset safe frequency, and the outdoor fan is controlled to start according to the preset safe frequency; in the case that it is determined that the second compressor and the outdoor fan are normally started, the second compressor is controlled to operate at an actual demand frequency of the air treatment system, and the outdoor fan is controlled to operate according to an actual feedback frequency of the second compressor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air treatment, and in particular relates to a wind frequency linkage control method, an indoor host, an air treatment system and a storage medium. BACKGROUND

[0002] In the related art, a fresh air system includes an indoor host and two outdoor machine subsystems, and one outdoor machine subsystem includes an outdoor fan. When one of the two outdoor machine subsystems is started and the feedback frequency is not 0, the outdoor fan operates. Since the outdoor fan is not in the other outdoor machine subsystem, when the outdoor machine subsystem causes the outdoor fan to not operate normally due to its own failure or communication delay, the load of the outdoor machine subsystem will heat up, and the system coil, IPM (Intelligent Power Module) and other devices or components will be overloaded, thereby causing damage to the outdoor machine subsystem.

[0003] In order to solve the above problems, when only the outdoor machine subsystem without the outdoor fan operates, the feedback frequency is replaced by a given target frequency, that is, when the target frequency of the outdoor machine subsystem is not 0, the outdoor fan is started. However, the outdoor fan speed is associated with the target frequency, and the target frequency is often not equal to the actual demand frequency, or even greatly different, which will cause the outdoor fan speed to not match the actual demand. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art. To this end, a first object of the present application is to provide a wind frequency linkage control method, in which the second compressor operates according to the actual demand frequency, and the outdoor fan operates according to the actual feedback frequency, and the outdoor fan is controlled according to the actual feedback frequency, so that the speed of the outdoor fan matches the actual demand speed.

[0005] A second object of the present application is to provide a computer readable storage medium.

[0006] A third object of the present application is to provide an indoor host.

[0007] A fourth object of the present application is to provide an air treatment system.

[0008] To achieve the above object, according to an embodiment of the first aspect of the present application, a wind frequency linkage control method is provided, applied to an air handling system, the air handling system comprising a first outdoor unit subsystem and a second outdoor unit subsystem, the first outdoor unit subsystem comprising an outdoor fan and a first compressor, the second outdoor unit subsystem comprising a second compressor, the method comprising: in the case of only needing to start the second outdoor unit subsystem, controlling the second compressor to start at a preset safe frequency, and controlling the outdoor fan to start according to the preset safe frequency; in the case of determining that the second compressor and the outdoor fan are normally started, controlling the second compressor to operate according to an actual demand frequency of the air handling system, and controlling the outdoor fan to operate according to an actual feedback frequency of the second compressor.

[0009] According to the wind frequency linkage control method of the embodiment of the present application, in the case of only needing to start the second outdoor unit subsystem, the second compressor is controlled to start at a preset safe frequency, and the outdoor fan is controlled to start according to the preset safe frequency, in the case of only needing to start the second compressor, the second compressor and the outdoor fan are first controlled to start at a safe frequency, so that it can be determined whether the second compressor and the outdoor fan have a fault, in the case of determining that the second compressor and the outdoor fan are normally started, the second compressor is controlled to operate according to an actual demand frequency, and the outdoor fan is controlled to operate according to an actual feedback frequency, therefore, the speed of the outdoor fan is consistent with the actual demand speed.

[0010] According to an embodiment of the present application, before determining that the second compressor and the outdoor fan are normally started, the method further comprises: determining whether the second compressor and the outdoor fan are normally started according to at least part of the actual feedback frequency of the second compressor, the IPM temperature of the second compressor, and the speed of the outdoor fan.

[0011] According to an embodiment of the present application, determining whether the second compressor and the outdoor fan are normally started according to at least part of the actual feedback frequency of the second compressor, the IPM temperature of the second compressor, and the speed of the outdoor fan comprises: in the case that the actual feedback frequency of the second compressor is greater than a preset frequency threshold, the IPM temperature is less than a preset temperature threshold, and the speed of the outdoor fan is greater than a preset speed threshold, determining that the second compressor and the outdoor fan are normally started.

[0012] According to an embodiment of the present application, in the case that the actual feedback frequency of the second compressor is less than or equal to a preset frequency threshold, the method further comprises: obtaining a starting duration of the second compressor; in the case that the starting duration of the second compressor is greater than a first preset starting duration, controlling the second compressor to stop working.

[0013] According to one of the embodiments of the present application, in the case that the actual feedback frequency of the second compressor is greater than the preset frequency threshold and the IPM temperature is greater than or equal to the preset temperature threshold, the method further comprises: issuing a fault alarm prompt and controlling the second compressor and the outdoor fan to stop working.

[0014] According to one of the embodiments of the present application, in the case that the actual feedback frequency of the second compressor is greater than the preset frequency threshold, the IPM temperature is less than the preset temperature threshold, and the rotating speed of the outdoor fan is less than or equal to the preset rotating speed threshold, the method further comprises: obtaining the starting duration of the outdoor fan; and in the case that the starting duration of the outdoor fan is greater than the second preset starting duration, controlling the second compressor to stop working.

[0015] According to one of the embodiments of the present application, in the case that the operating frequency of the second compressor meets the actual demand frequency, it is determined that only the second outdoor unit subsystem needs to be started.

[0016] According to one of the embodiments of the present application, the air handling system further comprises an indoor main unit, which is a fresh air fan, and the first outdoor unit subsystem and the second outdoor unit subsystem are in the same outdoor unit.

[0017] To achieve the above purpose, according to the second aspect of the present application, a computer readable storage medium is provided, which stores a wind frequency linkage control program, and the wind frequency linkage control program is executed by a processor to implement the wind frequency linkage control method of any of the preceding embodiments.

[0018] According to the computer readable storage medium of the embodiment of the present application, by executing the computer program of the wind frequency linkage control method, in the case that the second compressor and the outdoor fan can be normally started, the second compressor is controlled to operate according to the actual demand frequency, and the outdoor fan is controlled to operate according to the actual feedback frequency, the outdoor fan is controlled according to the actual feedback frequency, so that the rotating speed of the outdoor fan is consistent with the actual demand rotating speed.

[0019] To achieve the above purpose, according to the third aspect of the present application, an indoor main unit is provided, which comprises a memory, a processor, and a wind frequency linkage control program stored in the memory and executable on the processor, and the processor executes the wind frequency linkage control program to implement the wind frequency linkage control method of any of the preceding embodiments.

[0020] According to the indoor main unit of the embodiment of the present application, by executing the computer program of the wind frequency linkage control method by the processor, in the case that the second compressor and the outdoor fan can be normally started, the second compressor is controlled to operate according to the actual demand frequency, and the outdoor fan is controlled to operate according to the actual feedback frequency, the outdoor fan is controlled according to the actual feedback frequency, so that the rotating speed of the outdoor fan is consistent with the actual demand rotating speed.

[0021] To achieve the above object, according to a fourth aspect of the present application, an air treatment system is provided, comprising: a first outdoor unit subsystem comprising an outdoor fan and a first compressor; a second outdoor unit subsystem comprising a second compressor; and an indoor main unit configured to control the second compressor to start at a preset safe frequency and control the outdoor fan to start at the preset safe frequency in a case where only the second outdoor unit subsystem needs to be started, and control the second compressor to operate at an actual demand frequency of the air treatment system and control the outdoor fan to operate at an actual feedback frequency of the second compressor in a case where the second compressor and the outdoor fan are determined to be normally started.

[0022] According to the air treatment system of the embodiment of the present application, the indoor main unit controls the second compressor to start at the preset safe frequency and controls the outdoor fan to start at the preset safe frequency in a case where only the second outdoor unit subsystem needs to be started, and controls the second compressor to operate at the actual demand frequency and controls the outdoor fan to operate at the actual feedback frequency in a case where the second compressor and the outdoor fan are determined to be normally started, so that it can be determined whether the second compressor and the outdoor fan have faults, and the second compressor is controlled according to the actual demand frequency and the outdoor fan is controlled according to the actual feedback frequency, so that the rotation speed of the outdoor fan is consistent with the actual demand rotation speed.

[0023] Additional aspects and advantages of the present application will be given, partially in the following description, partially become obvious from the following description, or be understood by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a system schematic diagram of an air treatment system according to an embodiment of the present application;

[0025] Figure 2 is a flow schematic diagram of a wind frequency linkage control method according to an embodiment of the present application;

[0026] Figure 3 is a system schematic diagram of an air treatment system comprising an IPM module according to an embodiment of the present application;

[0027] Figure 4 is a flow schematic diagram of a wind frequency linkage control method according to a specific embodiment of the present application;

[0028] Figure 5 is a system schematic diagram of an indoor main unit according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] It should be noted that this application is based on the inventor's understanding and research into the following issues:

[0031] In related technologies, such as Figure 1 As shown, the air handling system includes an indoor unit 10, a first outdoor unit subsystem 20, and a second outdoor unit subsystem 30. The indoor unit 10 is connected to both the first outdoor unit subsystem 20 and the second outdoor unit subsystem 30 to control them. The first outdoor unit subsystem 20 includes a first outdoor unit 21, an outdoor fan 22, and a first compressor 23. The second outdoor unit subsystem 30 includes a second outdoor unit 31 and a second compressor 32. The first and second outdoor unit subsystems share the outdoor fan 22; that is, the outdoor fan 22 operates when the first compressor 23 is running, and the outdoor fan 22 also operates when the second compressor 32 is running.

[0032] During the operation of the air handling system, the second outdoor unit subsystem 30 may fail to communicate normally with the first outdoor unit subsystem 20 due to its own malfunction or communication delay, causing the outdoor fan 22 to malfunction and resulting in overload of the second outdoor unit subsystem 30, which may then be damaged. Therefore, when only the second outdoor unit subsystem 30 needs to operate independently, the outdoor fan 22 is started when the target frequency of the second outdoor unit subsystem 30 is not zero, instead of the feedback frequency.

[0033] When the indoor unit 10 controls the second outdoor unit subsystem 30 to start according to the actual required frequency of the air handling system, if the starting frequency of the second outdoor unit subsystem 30 is low, and a fault occurs in the second outdoor unit subsystem 30 or other air handling system malfunctions during startup, the air handling system will shut down without causing damage. However, if the starting frequency of the second outdoor unit subsystem 30 is high, the components of the air handling system may have already been subjected to impact before the air handling system shuts down, resulting in damage to the air handling system. Furthermore, when only the second outdoor unit subsystem 30 is started, the speed of the outdoor fan 22 is related to the target frequency. However, considering the requirements of the second outdoor unit subsystem 30 itself, the target frequency and the actual required frequency are often not equal or even differ significantly, which will cause the speed of the outdoor fan 22 to be inconsistent with the actual requirements.

[0034] Based on this, the embodiment of the present application provides a wind frequency linkage control method, an indoor host, an air handling system and a storage medium. In the case that the second compressor and the outdoor fan can be normally started, the second compressor is controlled to operate according to an actual demand frequency, and the outdoor fan is controlled to operate according to an actual feedback frequency, so that the speed of the outdoor fan is consistent with the actual demand speed.

[0035] The wind frequency linkage control method, the indoor host, the air handling system and the storage medium of the embodiment of the present application are described below with reference to the drawings.

[0036] Figure 2 is a flowchart of the wind frequency linkage control method according to an embodiment of the present application. As shown in Figure 2 , the wind frequency linkage control method comprises the following steps:

[0037] S101, in the case that only the second outdoor unit subsystem needs to be started, the second compressor is controlled to start according to a preset safe frequency, and the outdoor fan is controlled to start according to the preset safe frequency.

[0038] Specifically, if the first outdoor unit subsystem and the second outdoor unit subsystem need to be started at the same time, because the first outdoor unit subsystem comprises the outdoor fan, the outdoor fan can be started when the first outdoor unit subsystem is started, and there is no technical problem of the present application. In the case that only the second outdoor unit subsystem needs to be started, the second outdoor unit subsystem may be unable to normally communicate with the first outdoor unit subsystem due to faults or communication delays, so that the outdoor fan cannot be normally started. When the second compressor and the outdoor fan are started, the second compressor and the outdoor fan may be faulty and cannot be normally started, and therefore, the second compressor and the outdoor fan need to be controlled to start at a safe frequency first, so as to determine whether the second compressor and the outdoor fan are faulty, thereby avoiding damage to the second compressor and the outdoor fan due to a large starting frequency.

[0039] In some embodiments, in the case that the operating frequency of the second compressor meets the actual demand frequency, it is determined that only the second outdoor unit subsystem needs to be started.

[0040] Specifically, the operating frequency of the first compressor is usually greater than the operating frequency of the second compressor, and in the case that the operating frequency of the second compressor can meet the actual demand frequency, only the second outdoor unit subsystem can be started, so that the energy consumption of the air handling system can be saved. If the operating frequency of the second compressor cannot meet the actual demand frequency, only the second outdoor unit subsystem cannot be controlled to be started, and the first outdoor unit subsystem needs to be operated alone or the first outdoor unit subsystem and the second outdoor unit subsystem need to be operated at the same time.

[0041] In an alternative embodiment, after determining that only the second outdoor unit subsystem needs to be started, it is further determined whether the second compressor and the outdoor fan are in a fault shutdown state, and in the case that the second compressor and the outdoor fan are not in a fault shutdown state, the second compressor is started at a preset safe frequency, and the outdoor fan is started according to the preset safe frequency.

[0042] S102, in the case that the second compressor and the outdoor fan are started normally, the second compressor is controlled to operate at an actual demand frequency of the air handling system, and the outdoor fan is controlled to operate according to an actual feedback frequency of the second compressor.

[0043] Specifically, in the case that the second compressor and the outdoor fan are started normally, it indicates that the second compressor and the outdoor fan are not in a fault state, and the second compressor can be controlled to operate at an actual demand frequency, and then the outdoor fan is controlled to operate according to an actual feedback frequency. Since the second compressor is operated according to the actual demand frequency, and the outdoor fan is operated according to the actual feedback frequency, the speed of the outdoor fan can be matched with the actual demand speed.

[0044] In the above embodiment, in the case that only the second compressor needs to be started, the second compressor and the outdoor fan are first started at a safe frequency, so that it can be determined whether the second compressor and the outdoor fan are in a fault state, and in the case that the second compressor and the outdoor fan are started normally, the second compressor is controlled to operate according to an actual demand frequency, and the outdoor fan is controlled to operate according to an actual feedback frequency, so that the speed of the outdoor fan can be matched with the actual demand speed.

[0045] In some embodiments, before determining that the second compressor and the outdoor fan are started normally, the method further comprises: determining whether the second compressor and the outdoor fan are started normally according to at least part of the actual feedback frequency of the second compressor, the IPM temperature for driving the second compressor, and the speed of the outdoor fan.

[0046] Specifically, as shown in Figure 3 The second outdoor unit subsystem 30 further comprises an IPM module 33 for driving the second compressor 32 to operate. When the second compressor 32 operates, the temperature of the IPM module 33 rises, and when the IPM temperature is greater than a preset temperature threshold, a high-temperature protection is triggered, and the second compressor 32 stops. When the second compressor 32 is in a fault state, the actual feedback frequency is abnormal, and when the outdoor fan 22 is abnormal, the speed of the outdoor fan 22 is also abnormal. Therefore, whether the second compressor 32 and the outdoor fan 22 are started normally can be determined according to the actual feedback frequency, the IPM temperature, and the speed of the outdoor fan 22.

[0047] In some embodiments, determining whether the second compressor and the outdoor fan are normally started according to at least part of the actual feedback frequency of the second compressor, the IPM temperature of the driving second compressor, and the rotating speed of the outdoor fan comprises: in the case that the actual feedback frequency of the second compressor is greater than a preset frequency threshold, the IPM temperature is less than a preset temperature threshold, and the rotating speed of the outdoor fan is greater than a preset rotating speed threshold, determining that the second compressor and the outdoor fan are normally started.

[0048] It can be understood that the actual feedback frequency being greater than the preset frequency threshold indicates that the second compressor is normally started, the IPM temperature being less than the preset temperature threshold does not trigger high-temperature protection, and the rotating speed of the outdoor fan being greater than the preset rotating speed threshold indicates that the outdoor fan is normally started, so it can be determined that the second compressor and the outdoor fan are normally started.

[0049] It should be noted that the preset frequency threshold and the preset rotating speed threshold can be 0, but are not limited to 0, and are not limited here.

[0050] In some embodiments, in the case that the actual feedback frequency of the second compressor is less than or equal to the preset frequency threshold, the method further comprises: obtaining the starting duration of the second compressor; and in the case that the starting duration of the second compressor is greater than a first preset starting duration, controlling the second compressor to stop working.

[0051] Specifically, the actual feedback frequency of the second compressor being less than or equal to the preset frequency threshold indicates that the starting of the second compressor can be abnormal or the second compressor has not completed starting, at this time the starting duration of the second compressor needs to be obtained, if the starting duration of the second compressor is less than or equal to the first preset starting duration, the starting process of the second compressor has not been completed, the actual feedback frequency needs to be determined again whether it is greater than the preset frequency threshold, until the starting duration of the second compressor is greater than the first preset starting duration, if the actual feedback frequency is still less than or equal to the preset frequency threshold, the starting of the second compressor is abnormal, and the second compressor has a fault, therefore, the second compressor needs to be controlled to stop working.

[0052] In some embodiments, in the case that the actual feedback frequency of the second compressor is greater than the preset frequency threshold and the IPM temperature is greater than or equal to the preset temperature threshold, the method further comprises: issuing a fault alarm prompt and controlling the second compressor and the outdoor fan to stop working.

[0053] Specifically, the actual feedback frequency being greater than the preset frequency threshold indicates that the second compressor has been normally started and is in a running state, the IPM module will heat up when the second compressor is running, and the IPM temperature will rise, when the IPM temperature is greater than or equal to the preset temperature threshold, high-temperature protection will be triggered, the indoor main machine will issue a fault alarm prompt, and the second compressor and the outdoor fan will be controlled to stop working, thereby avoiding the IPM temperature of the IPM module from further rising.

[0054] In some embodiments, in the case that the actual feedback frequency of the second compressor is greater than the preset frequency threshold, the IPM temperature is less than the preset temperature threshold, and the rotating speed of the outdoor fan is less than or equal to the preset rotating speed threshold, the method further comprises: obtaining the starting duration of the outdoor fan; and in the case that the starting duration of the outdoor fan is greater than a second preset starting duration, controlling the second compressor to stop working.

[0055] Specifically, in the case that the second compressor is started normally and the IPM temperature is less than the preset temperature threshold, it is determined whether the outdoor fan is started normally. If the rotating speed of the outdoor fan is less than or equal to the preset rotating speed threshold, it indicates that the starting of the outdoor fan can be abnormal or the outdoor fan has not completed the starting. At this time, the starting duration of the outdoor fan needs to be obtained. If the starting duration of the outdoor fan is less than or equal to a second preset starting duration, the starting process of the outdoor fan has not been completed, and it is necessary to determine again whether the rotating speed of the outdoor fan is greater than the preset rotating speed threshold until the starting duration of the outdoor fan is greater than the second preset starting duration. If the rotating speed of the outdoor fan is still less than or equal to the preset rotating speed threshold, the starting of the outdoor fan is abnormal, and the second compressor cannot be cooled down. Therefore, the second compressor needs to be controlled to stop working to avoid the continuous temperature rise of the second compressor leading to the damage of the second compressor.

[0056] In an optional implementation, while the second compressor is controlled to start at the preset safe frequency and the outdoor fan is controlled to start according to the preset safe frequency, the frequency starting timer and the outdoor fan rotating speed timer also need to be reset. The frequency starting timer is used to time the starting duration of the second compressor, and the outdoor fan rotating speed timer is used to time the starting duration of the outdoor fan.

[0057] In some embodiments, the air handling system further comprises an indoor host, and the indoor host is a fresh air machine. The first outdoor machine subsystem and the second outdoor machine subsystem are in the same outdoor machine.

[0058] It can be understood that the air handling system can be a fresh air handling system. When the air handling system is a fresh air system, the indoor host is a fresh air machine, and the first outdoor machine subsystem and the second outdoor machine subsystem are in the same outdoor machine.

[0059] The technical solutions of the present application will be further described in detail below in combination with specific embodiments:

[0060] As shown in FIG. 1, the wind frequency linkage control method comprises the following steps: Figure 4

[0061] S201, controlling the air handling system to start.

[0062] ​S202, determine whether the operating frequency of the second compressor meets the actual demand frequency, if the operating frequency of the second compressor cannot meet the actual demand frequency, execute step S203, if the operating frequency of the second compressor meets the actual demand frequency, execute step S204.

[0063] S203, exit the second outdoor unit subsystem only start function.

[0064] S204, determine that the second outdoor unit subsystem only needs to be started.

[0065] S205, determine whether the second compressor and the outdoor fan are in a fault shutdown state, if the second compressor and the outdoor fan are in a fault shutdown state, execute step S203, if the second compressor and the outdoor fan are not in a fault shutdown state, execute step S206.

[0066] S206, control the second compressor to start according to the preset safety frequency, and control the outdoor fan to start according to the preset safety frequency, and reset the frequency start timer and the outdoor fan speed timer.

[0067] S207, determine whether the actual feedback frequency of the second compressor is greater than the preset frequency threshold, if the actual feedback frequency of the second compressor is greater than the preset frequency threshold, execute step S210, if the actual feedback frequency of the second compressor is less than or equal to the preset frequency threshold, execute step S208.

[0068] S208, determine whether the start time of the second compressor is greater than the first preset start time, if the start time of the second compressor is less than or equal to the first preset start time, return to step S207, if the start time of the second compressor is greater than the first preset start time, execute step S209.

[0069] S209, control the second compressor to stop working.

[0070] S210, determine whether the IPM temperature is greater than or equal to the preset temperature threshold, if the IPM temperature is greater than or equal to the preset temperature threshold, execute step S211, if the IPM temperature is less than the preset temperature threshold, execute step S212.

[0071] S211, issue a fault alarm prompt, and control the second compressor and the outdoor fan to stop working.

[0072] S212, determine whether the speed of the outdoor fan is greater than the preset speed threshold, if the speed of the outdoor fan is less than or equal to the preset speed threshold, execute step S213, if the speed of the outdoor fan is greater than the preset speed threshold, execute step S214.

[0073] S213, determining whether the starting duration of the outdoor fan is greater than the second preset starting duration, if the starting duration of the outdoor fan is greater than the second preset starting duration, executing step S209, if the starting duration of the outdoor fan is less than or equal to the second preset starting duration, returning to step S212.

[0074] S214, controlling the second compressor to operate according to the actual demand frequency of the air handling system, and controlling the outdoor fan to operate according to the actual feedback frequency of the second compressor.

[0075] In the above embodiment, in the case of only needing to start the second compressor, the second compressor and the outdoor fan are first started at the safe frequency, so that it can be determined whether the second compressor and the outdoor fan have faults, in the case of normal starting of the second compressor and the outdoor fan, the second compressor is controlled to operate according to the actual demand frequency, and the outdoor fan is controlled to operate according to the actual feedback frequency, so that the rotating speed of the outdoor fan is consistent with the actual demand rotating speed.

[0076] In summary, according to the wind frequency linkage control method of the embodiment of the present application, in the case of only needing to start the second outdoor subsystem, the second compressor is controlled to start at the preset safe frequency, and the outdoor fan is controlled to start according to the preset safe frequency, in the case of only needing to start the second compressor, the second compressor and the outdoor fan are first started at the safe frequency, so that it can be determined whether the second compressor and the outdoor fan have faults, in the case of normal starting of the second compressor and the outdoor fan, the second compressor is controlled to operate according to the actual demand frequency, and the outdoor fan is controlled to operate according to the actual feedback frequency, the second compressor is controlled according to the actual demand frequency, and the outdoor fan is controlled according to the actual feedback frequency, therefore, the rotating speed of the outdoor fan is consistent with the actual demand rotating speed.

[0077] Corresponding to the above embodiment, the embodiment of the present application also provides a computer readable storage medium, which stores a wind frequency linkage control program, the wind frequency linkage control program is executed by a processor to realize the wind frequency linkage control method of any of the above embodiments.

[0078] According to the computer readable storage medium of the embodiment of the present application, by executing the computer program of the above wind frequency linkage control method, in the case of normal starting of the second compressor and the outdoor fan, the second compressor is controlled to operate according to the actual demand frequency, and the outdoor fan is controlled to operate according to the actual feedback frequency, the outdoor fan is controlled according to the actual feedback frequency, so that the rotating speed of the outdoor fan is consistent with the actual demand rotating speed.

[0079] Corresponding to the above embodiment, the embodiment of the present application also provides an indoor host. As Figure 5As shown, the indoor host 100 includes a memory 110, a processor 120, and a wind frequency linkage control program stored in the memory 110 and executable on the processor 120. When the processor 120 executes the wind frequency linkage control program, the wind frequency linkage control method of any of the foregoing embodiments is implemented.

[0080] According to the indoor host of the embodiment of the present application, by executing the computer program of the wind frequency linkage control method, in the case that the second compressor and the outdoor fan can be normally started, the second compressor is controlled to operate according to the actual demand frequency, and the outdoor fan is controlled to operate according to the actual feedback frequency. The outdoor fan is controlled according to the actual feedback frequency, so that the speed of the outdoor fan is consistent with the actual demand speed.

[0081] Corresponding to the above-mentioned embodiments, the embodiments of the present application also provide an air handling system. As shown in Figure 1 The air handling system includes a first outdoor unit subsystem 20, a second outdoor unit subsystem 30, and an indoor host 10.

[0082] The first outdoor unit subsystem 20 includes an outdoor fan 22 and a first compressor 23; the second outdoor unit subsystem 30 includes a second compressor 32; the indoor host 10 is configured to, in the case that only the second outdoor unit subsystem 30 needs to be turned on, control the second compressor 32 to start according to a preset safe frequency, and control the outdoor fan 22 to start according to the preset safe frequency, and in the case that the second compressor 32 and the outdoor fan 22 are determined to be normally started, control the second compressor 32 to operate according to the actual demand frequency of the air handling system, and control the outdoor fan 22 to operate according to the actual feedback frequency of the second compressor 32.

[0083] In some embodiments, the indoor host 10 is further configured to, before determining whether the second compressor 32 and the outdoor fan 22 are normally started, determine whether the second compressor 32 and the outdoor fan 22 are normally started according to at least part of the actual feedback frequency of the second compressor 32, the IPM temperature driving the second compressor 32, and the speed of the outdoor fan 22.

[0084] In some embodiments, the indoor host 10 is further configured to, in the case that the actual feedback frequency of the second compressor 32 is greater than a preset frequency threshold, the IPM temperature is less than a preset temperature threshold, and the speed of the outdoor fan 22 is greater than a preset speed threshold, determine that the second compressor 32 and the outdoor fan 22 are normally started.

[0085] In some embodiments, the indoor host 10 is further configured to: in a case where the actual feedback frequency of the second compressor 32 is less than or equal to the preset frequency threshold, acquire a starting duration of the second compressor 32; and in a case where the starting duration of the second compressor 32 is greater than a first preset starting duration, control the second compressor 32 to stop working.

[0086] In some embodiments, the indoor host 10 is further configured to: in a case where the actual feedback frequency of the second compressor 32 is greater than the preset frequency threshold and the IPM temperature is greater than or equal to a preset temperature threshold, issue a fault alarm prompt and control the second compressor 32 and the outdoor fan 22 to stop working.

[0087] In some embodiments, the indoor host 10 is further configured to: in a case where the actual feedback frequency of the second compressor 32 is greater than the preset frequency threshold, the IPM temperature is less than the preset temperature threshold, and the rotating speed of the outdoor fan 22 is less than or equal to a preset rotating speed threshold, acquire a starting duration of the outdoor fan 22; and in a case where the starting duration of the outdoor fan 22 is greater than a second preset starting duration, control the second compressor 32 to stop working.

[0088] In some embodiments, in a case where the operating frequency of the second compressor 32 meets the actual demand frequency, it is determined that only the second outdoor unit subsystem 30 needs to be started.

[0089] In some embodiments, the indoor host 10 is a fresh air machine, and the first outdoor unit subsystem 20 and the second outdoor unit subsystem 30 are in the same outdoor unit.

[0090] It should be noted that the specific implementation of the air handling system of the embodiments of the present application corresponds to the specific implementation of the wind frequency linkage control method of the embodiments of the present application one by one, which will not be repeated here.

[0091] According to the air handling system of the embodiments of the present application, in a case where only the second outdoor unit subsystem needs to be started, the second compressor is started at a preset safe frequency, and the outdoor fan is started according to the preset safe frequency, in a case where only the second compressor needs to be started, the second compressor and the outdoor fan are started at a safe frequency, so that it can be judged whether the second compressor and the outdoor fan exist faults, in a case where the second compressor and the outdoor fan are normally started, the second compressor is controlled to operate according to the actual demand frequency of the air handling system, and the outdoor fan is controlled to operate according to the actual feedback frequency of the second compressor, the second compressor is controlled according to the actual demand frequency, and the outdoor fan is controlled according to the actual feedback frequency, therefore, the rotating speed of the outdoor fan is consistent with the actual demand rotating speed.

[0092] It is to be appreciated that the above description and the examples that follow are intended to be illustrative only and that changes can be made to the description and examples without departing from the scope of the application. Note also that the use of particular brand names in the description is solely for illustration and should not be construed as an endorsement of such brands.

[0093] It should be understood that aspects of the application can be implemented in hardware, software, firmware or a combination thereof. In the above embodiments, various steps or methods can be implemented in software or firmware that is stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any of the following technologies, known in the art, can be used: a hybrid of the technologies mentioned above, discrete logic circuitry having logic gates for implementing logic functions upon data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and so forth.

[0094] In the description of the present application, reference has been made to the use of terms such as "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that a particular feature, structure, material or characteristic is included in at least one embodiment or example of the present application. The illustrative examples given are not necessarily to be construed as preferred or advantageous or with the exclusion of other equally valid examples that can be particularly adapted to a given application. Furthermore, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and operation described. Accordingly, all suitable modifications and equivalents should be included within the scope of the present application.

[0095] In addition, the terms "first", "second" and the like in the embodiments of the present application are used only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated in the embodiments. Therefore, the features defined with the terms "first", "second" and the like in the embodiments of the present application can be explicitly or implicitly indicated to include at least one of the features in the embodiments. In the description of the present application, the meaning of the word "plurality" is at least two or two or more, such as two, three, four, etc., unless otherwise specifically limited in the embodiments.

[0096] In the present application, unless otherwise specifically related or limited in the embodiments, the terms "mounting", "connecting", "connecting" and "fixing" and the like appearing in the embodiments should be understood broadly, for example, the connection can be fixed connection, or detachable connection, or integral, which can be understood, or mechanical connection, electrical connection, etc. Of course, it can also be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements, or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific implementation.

[0097] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A wind frequency linkage control method, characterized by, The method is applied to an air treatment system, the air treatment system comprising a first outdoor unit subsystem and a second outdoor unit subsystem, the first outdoor unit subsystem comprising an outdoor fan and a first compressor, and the second outdoor unit subsystem comprising a second compressor, and the method comprising: controlling the second compressor to start at a preset safe frequency and controlling the outdoor fan to start according to the preset safe frequency when only the second outdoor unit subsystem needs to be started; determining whether the second compressor and the outdoor fan are started normally according to at least part of an actual feedback frequency of the second compressor, an IPM temperature of the second compressor, and a rotating speed of the outdoor fan; controlling the second compressor to operate at an actual demand frequency of the air treatment system and controlling the outdoor fan to operate according to the actual feedback frequency of the second compressor when it is determined that the second compressor and the outdoor fan are started normally.

2. The method of claim 1, wherein, determining whether the second compressor and the outdoor fan are started normally according to at least part of an actual feedback frequency of the second compressor, an IPM temperature of the second compressor, and a rotating speed of the outdoor fan, comprising: determining that the second compressor and the outdoor fan are started normally when the actual feedback frequency of the second compressor is greater than a preset frequency threshold, the IPM temperature is less than a preset temperature threshold, and the rotating speed of the outdoor fan is greater than a preset rotating speed threshold.

3. The method of claim 2, wherein, when the actual feedback frequency of the second compressor is less than or equal to the preset frequency threshold, the method further comprising: acquiring a starting duration of the second compressor; controlling the second compressor to stop working when the starting duration of the second compressor is greater than a first preset starting duration.

4. The method of claim 1, wherein, when the actual feedback frequency of the second compressor is greater than a preset frequency threshold and the IPM temperature is greater than or equal to a preset temperature threshold, the method further comprising: issuing a fault alarm prompt and controlling the second compressor and the outdoor fan to stop working.

5. The method of claim 2, wherein, when the actual feedback frequency of the second compressor is greater than a preset frequency threshold, the IPM temperature is less than a preset temperature threshold, and the rotating speed of the outdoor fan is less than or equal to the preset rotating speed threshold, the method further comprising: acquiring a starting duration of the outdoor fan; controlling the second compressor to stop working when the starting duration of the outdoor fan is greater than a second preset starting duration.

6. The method according to any one of claims 1-5, characterized in that, when the operating frequency of the second compressor meets the actual demand frequency, it is determined that only the second outdoor unit subsystem needs to be started.

7. The method according to any one of claims 1-5, characterized in that, The air treatment system further comprises an indoor main unit, the indoor main unit being a fresh air machine, and the first outdoor unit subsystem and the second outdoor unit subsystem being in the same outdoor unit.

8. A computer-readable storage medium, characterized in that, The wind frequency linkage control program is stored on the storage medium and is executed by the processor to implement the wind frequency linkage control method according to any one of claims 1-7.

9. An indoor master, characterized by The wind-frequency linkage control program is stored in the memory and executable on the processor, and when the processor executes the wind-frequency linkage control program, the wind-frequency linkage control method according to any one of claims 1-7 is realized.

10. An air handling system characterized by, The wind-frequency linkage control program comprises: A first outdoor unit subsystem comprising an outdoor fan and a first compressor; A second outdoor unit subsystem comprising a second compressor; An indoor main unit configured to control the second compressor to start at a preset safe frequency when only the second outdoor unit subsystem needs to be turned on, control the outdoor fan to start according to the preset safe frequency, and determine whether the second compressor and the outdoor fan are normally started according to at least part of actual feedback frequency of the second compressor, IPM temperature for driving the second compressor, and rotating speed of the outdoor fan, and when it is determined that the second compressor and the outdoor fan are normally started, control the second compressor to operate at an actual demand frequency of the air handling system, and control the outdoor fan to operate according to the actual feedback frequency of the second compressor.

Images