Control method of duct type air conditioner and related products

Abstract

The invention provides a control method of a duct type air conditioner and a related product. The method comprises the steps that parameters of a draught fan of the duct type air conditioner, parameters of a refrigerant circulation system and / or airflow parameters are obtained; according to the parameters of the fan, the parameters of the refrigerant circulation system and / or the air flow parameters, the type of the fan and the length of an air duct of the duct type air conditioner are determined; and the rotating speed of the fan is determined according to the air pipe length so that the air pipe machine can operate at the preset air volume. The obtained rotating speed of the fan can ensure that the air volume of the air outlet of the duct type air conditioner meets the design requirement no matter whether the duct type air conditioner is additionally provided with an air duct or not, so that the problem that the air volume of the air outlet is too small to meet the refrigerating and heating requirements of customers due to the too long air duct can be solved, the air supply volume can be ensured, and the air conditioner using comfort of the users is ensured. A special air volume detection module is not needed, the air volume is detected at each tail end air port, the number of devices is reduced, and cost is reduced. Meanwhile, a user static pressure setting step is omitted, user operation is not needed, and simplicity and convenience are achieved.

Description

Technical Field

[0001] The present invention relates to the control technology of air duct machines, and particularly to a control method and related products for an air duct machine. Background Art

[0002] An air conditioning system consists of a condenser, an evaporator, a compressor, and an electronic expansion valve. The internal structure of a free static pressure air duct machine mainly includes: a fan 45, an electronic expansion valve 43, and an indoor heat exchanger 44. When the air duct machine is in the refrigeration mode in the air conditioning system, it acts as an evaporator, and when in the heating mode, it acts as a condenser. The role of the air duct machine in the air conditioning system is as Figure 1 and 2 shown. In the refrigeration mode: The compressor 41 compresses the low-temperature and low-pressure gaseous refrigerant from the indoor heat exchanger 44 into a high-temperature and high-pressure gaseous refrigerant. The gaseous refrigerant enters the outdoor heat exchanger 42 to release heat and is condensed into a medium-temperature and high-pressure liquid. Then it enters the electronic expansion valve 43 inside the air duct machine for throttling, becoming a low-temperature and low-pressure liquid refrigerant. After heat exchange through the indoor heat exchanger 44, the refrigerant absorbs the heat in the room and evaporates into a low-temperature and low-pressure gaseous refrigerant and then returns to the compressor 41 to complete an air conditioning refrigeration cycle, as Figure 1 shown. In the heating mode: The compressor 41 compresses the low-temperature and low-pressure gaseous refrigerant from the outdoor heat exchanger 42 into a high-temperature and high-pressure gaseous refrigerant. The gaseous refrigerant enters the indoor heat exchanger 43 to release heat and is condensed into a medium-temperature and high-pressure liquid. Then the refrigerant is throttled by the electronic expansion valve 43 of the outdoor unit, becoming a low-temperature and low-pressure liquid refrigerant. After heat exchange through the outdoor heat exchanger 42, the refrigerant absorbs the heat outdoors and evaporates into a low-temperature and low-pressure gaseous refrigerant and then returns to the compressor to complete an air conditioning heating cycle, as Figure 2 shown.

[0003] There are various types of indoor air duct machine models. During the actual air conditioning installation process, it is easy to change the length of the air duct, resulting in a mismatch between the fan and the air duct. As a result, there may be a situation where a small-capacity and low-static-pressure machine is connected to a long air duct. The standard air volume of a small machine is small, and the external static pressure is low, ultimately leading to non-compliance of both the air volume and the air outlet temperature at the air outlet. In the existing solutions, only by increasing the fan speed can the air volume at the air outlet be increased. Only the relationships between the fan voltage and speed, current and speed, power and speed, or static pressure and speed are considered to collect relevant data. Finally, a single relationship between the target air volume and speed, current, power, and voltage is obtained. The air volume of the air duct machine is adjusted by adjusting the speed to directly or indirectly meet the target air volume requirement and ensure that the air duct machine has a constant air volume function.

[0004] However, the air volume output of the air duct machine only considers the operating parameters of the fan and does not take other factors into account. Obviously, there is a difference between the guaranteed constant air volume and the actual constant air volume, which does not meet the user's requirements. Moreover, the prior art does not consider the static pressure loss problem of the air duct machine due to the installation of the air duct in actual installation. Although it can ensure a constant air volume at the outlet of the air duct machine, the air volume at the end of the air duct of the air duct machine gradually decreases as the length of the air duct increases until no air volume is blown out from the air outlet. Summary of the Invention

[0005] In view of the above problems, the present invention is proposed to provide a control method and related products for an air duct machine that can overcome or at least partially solve the above problems, and can ensure that the air volume at the air outlet of the air duct machine meets the design requirements regardless of whether the air duct machine is equipped with an air duct, thereby solving the problem that the air volume at the air outlet is too small to meet the customer's cooling and heating requirements due to the too long air duct length.

[0006] Specifically, the present invention provides a control method for an air duct machine, which includes:

[0007] Obtain the parameters of the fan of the air duct machine, the parameters of the refrigerant circulation system, and / or the air flow parameters;

[0008] Determine the type of the fan and the length of the air duct of the air duct machine according to the parameters of the fan, the parameters of the refrigerant circulation system, and / or the air flow parameters;

[0009] Determine the rotational speed of the fan according to the length of the air duct so that the air duct machine operates at a preset air volume.

[0010] Optionally, the parameters of the fan include power, the parameters of the refrigerant circulation system include the inlet liquid main pipe temperature of the air duct machine and the return gas main pipe temperature of the air duct machine, and the air flow parameters include the return air temperature of the air duct machine;

[0011] The step of determining the type of the fan and the length of the air duct of the air duct machine according to the parameters of the fan, the parameters of the refrigerant circulation system, and / or the air flow parameters includes:

[0012] Determine the type of the fan according to the return air temperature and the power;

[0013] Determine the length of the air duct of the air duct machine according to the type of the fan, the power, the inlet liquid main pipe temperature, and the return gas main pipe temperature.

[0014] Optionally, determine the type of the fan according to the relationship model established between the return air temperature, the power, and the type of the fan;

[0015] Determine the length of the air duct according to the established relationship model among the type of the fan, the power, the temperature of the main liquid inlet pipe, the temperature of the main gas return pipe, and the length of the air duct;

[0016] The step of determining the rotational speed of the fan according to the length of the air duct includes:

[0017] Determine the rotational speed of the fan according to the established relationship model among the length of the air duct, the return air temperature, the preset air volume, the type of the fan, and the rotational speed of the fan.

[0018] Optionally, before the step of obtaining the parameters of the fan of the air duct machine, the parameters of the refrigerant circulation system, and / or the air flow parameters, it further includes:

[0019] Control the air duct machine to start up, and obtain the preset return air temperature of the air duct machine;

[0020] Determine the parameter detection temperature according to the preset return air temperature;

[0021] Obtain the return air temperature of the air duct machine;

[0022] When the return air temperature of the air duct machine reaches the parameter detection temperature, obtain the parameters of the fan of the air duct machine, the parameters of the refrigerant circulation system, and / or the air flow parameters.

[0023] Optionally, after controlling the air duct machine to start up, make the fan operate at a preset rotational speed.

[0024] Optionally, the step of determining the parameter detection temperature according to the preset return air temperature includes:

[0025] Obtain a preset difference value;

[0026] Determine the parameter detection temperature according to the preset return air temperature and the preset difference value; when the air duct machine is in cooling, the parameter detection temperature is greater than the preset return air temperature; when the air duct machine is in heating, the parameter detection temperature is less than the preset return air temperature.

[0027] Optionally, the control method of the air duct machine further includes:

[0028] Every preset time period, determine the type of the fan and the length of the air duct of the air duct machine according to the parameters of the fan, the parameters of the refrigerant circulation system, and / or the air flow parameters;

[0029] Obtain the change rate of the length of the air duct;

[0030] Determine the degree of dirt on the air duct of the air duct machine according to the change amount of the length of the air duct.

[0031] According to another aspect of the present invention, there is also provided a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the above-described control methods of the air duct machine are implemented.

[0032] According to still another aspect of the present invention, there is also provided a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of any one of the above-described control methods of the air duct machine are implemented.

[0033] According to yet another aspect of the present invention, there is also provided a computer device, which includes a memory, a processor, and a computer program stored on the memory, and the processor executes the computer program to implement the steps of any one of the control methods of the air duct machine.

[0034] For the control method of the air duct machine of the present invention, during the operation of the air conditioner, corresponding parameters are collected, the length of the air duct is determined according to the corresponding parameters, and the rotational speed at which the fan reaches the preset air volume is determined at least according to the length of the air duct. Moreover, these parameters include not only the parameters of the fan, but also the parameters of the refrigerant circulation system and the parameters of the air flow. Such a setting makes the determination of the length of the air duct more accurate. That is to say, the present invention fully considers the mutual relationship between the length of the air duct and the parameters of the refrigerant circulation system and the parameters of the air flow, and based on this, the determined length of the air duct is more accurate.

[0035] Furthermore, by using the more accurate air duct length data and combining the parameters of the air flow and the fan, the determined rotational speed of the fan is more accurate and more in line with the actual situation. In this way, the guarantee of the air volume output of the air duct machine no longer depends only on the parameters of the fan, but also comprehensively considers the influence brought by the air flow itself. In particular, the length of the air duct is introduced, so that the obtained rotational speed of the fan can ensure that the air volume at the air outlet of the air duct machine meets the design requirements whether the air duct machine is equipped with a duct or not, and thus can solve the problem that the air volume at the air outlet is too small to meet the customer's cooling and heating requirements due to the too long length of the air duct.

[0036] Those skilled in the art will become more apparent from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0038] Figure 1 is a schematic structural diagram of an existing air duct machine during refrigeration;

[0039] Figure 2 is a schematic structural diagram when an existing air duct machine heats up;

[0040] Figure 3 is a schematic flowchart of a control method for an air duct machine according to an embodiment of the present invention;

[0041] Figure 4 is a schematic flowchart of a control method for an air duct machine according to an embodiment of the present invention;

[0042] Figure 5 is a schematic flowchart of a control method for an air duct machine according to an embodiment of the present invention;

[0043] Figure 6 is a schematic diagram of a computer program product according to an embodiment of the present invention;

[0044] Figure 7 is a schematic diagram of a computer-readable storage medium according to an embodiment of the present invention; and

[0045] Figure 8 is a schematic diagram of a computer device according to an embodiment of the present invention. Detailed implementation manners

[0046] The embodiment of the present invention provides a control method for an air duct machine, so that the obtained rotational speed of the fan can ensure that the air volume at the air outlet of the air duct machine meets the design requirements regardless of whether the air duct machine is equipped with an air duct, and thus can solve the problem that the air volume at the air outlet is too small to meet the customer's cooling and heating requirements due to the too long air duct length.

[0047] Figure 3 is a schematic flowchart of a control method for an air duct machine according to an embodiment of the present invention, as Figure 3 shown, this method generally may include:

[0048] Step S100, obtaining parameters of the fan of the air duct machine, parameters of the refrigerant circulation system, and / or air flow parameters.

[0049] Step S200, determining the type of the fan and the air duct length of the air duct machine according to the parameters of the fan, the parameters of the refrigerant circulation system, and / or the air flow parameters.

[0050] Step S300, determining the rotational speed of the fan according to the air duct length so that the air duct machine operates at a preset air volume.

[0051] In the control method of the air duct machine according to the embodiments of the present invention, corresponding parameters are collected during the operation of the air conditioner, the length of the air duct is determined according to the corresponding parameters, and the rotational speed at which the fan reaches the preset air volume is determined at least according to the length of the air duct. Moreover, these parameters include not only the parameters of the fan, but also the parameters of the refrigerant circulation system and the parameters of the air flow. Such a setting makes the determination of the length of the air duct more accurate. That is to say, the present invention fully considers the mutual relationship between the length of the air duct and the parameters of the refrigerant circulation system and the parameters of the air flow, and the length of the air duct determined based on this is more accurate.

[0052] Furthermore, by using more accurate air duct length data and combining the parameters of the air flow and the fan, the determined rotational speed of the fan is more accurate and more in line with the actual situation. This makes the guarantee of the air volume output of the air duct machine no longer rely solely on the parameters of the fan, but also comprehensively considers the influence brought by the air flow itself. In particular, the length of the air duct is introduced, so that the obtained rotational speed of the fan can ensure that the air volume at the air outlet of the air duct machine meets the design requirements whether the air duct machine is equipped with a duct or not, and thus can solve the problem that the air volume at the air outlet is too small to meet the cooling and heating requirements of customers due to the too long length of the air duct, thereby ensuring the air supply volume and guaranteeing the comfort of the user when using the air conditioner. In this way, there is no need to set up a special air volume detection module to detect the air volume at each end air outlet, reducing the number of devices and the cost. At the same time, the user static pressure setting step is also omitted, without the need for user operation, which is simple and convenient.

[0053] In some embodiments of the present invention, the parameters of the fan include power. The parameters of the refrigerant circulation system include the temperature of the liquid inlet main pipe of the air duct machine and the temperature of the gas return main pipe of the air duct machine. The air flow parameters include the return air temperature of the air duct machine.

[0054] As Figure 4 shown, the above step S200, determining the type of the fan and the length of the air duct of the air duct machine according to the parameters of the fan, the refrigerant circulation system and / or the air flow parameters, includes:

[0055] Step S210, determining the type of the fan according to the return air temperature and the power.

[0056] Step S220, determining the length of the air duct of the air duct machine according to the type of the fan, the power, the temperature of the liquid inlet main pipe, and the temperature of the gas return main pipe.

[0057] In the embodiments of the present invention, the type of the fan is first determined, that is, the type of the fan installed in the air duct machine is first determined, which is convenient for subsequent determination of the length of the air duct of the air duct machine based on the type of the fan and other parameters, reducing the amount of data analysis and improving the determination efficiency.

[0058] In some embodiments of the present invention, the type of the blower can be determined according to the established relationship model among the return air temperature, power, and type of the blower. That is to say, the relationship model obtained by means such as experiments and neural network learning can be implanted into the air duct machine, or communicated with the air duct machine through networking. Then, based on the relationship model and the obtained return air temperature, power, etc., the type of the blower can be obtained.

[0059] In some embodiments of the present invention, the air duct length can be determined according to the established relationship model among the type of the blower, power, inlet liquid main pipe temperature, return air main pipe temperature, and air duct length. The air duct length has a relatively large influence on the inlet liquid main pipe temperature and return air main pipe temperature during air supply. Similarly, the inlet liquid main pipe temperature and return air main pipe temperature can also accurately reflect the air duct length. When determining the air duct length, using these two parameters can make the determination of the air duct length more accurate.

[0060] Specifically, the inlet liquid main pipe temperature is an important parameter in the refrigeration or air conditioning system, which refers to the temperature of the liquid pipeline before the refrigerant enters the evaporator. This temperature has an important impact on the operating efficiency and stability of the system. The measurement point of the inlet liquid main pipe temperature is usually measured before the expansion valve or capillary tube. The inlet liquid main pipe temperature directly affects the subcooling degree of the refrigerant. The higher the subcooling degree, the higher the efficiency of the refrigeration system usually is. Too high or too low inlet liquid main pipe temperature may cause abnormal system operation, such as unstable refrigerant flow rate, frosting of the evaporator, etc.

[0061] The return air main pipe temperature is an important parameter in the refrigeration or air conditioning system, which refers to the temperature of the gas pipeline between the outlet of the evaporator and the inlet of the compressor. This temperature has an important impact on the operating efficiency and stability of the system. The measurement point of the return air main pipe temperature is usually measured near the suction port of the compressor. Of course, it can also be measured on the connecting pipeline flowing out of the evaporator. The return air main pipe temperature directly affects the superheat degree of the refrigerant, and the superheat degree is an important parameter to ensure the safe operation of the compressor. Too high or too low return air main pipe temperature may cause abnormal system operation, such as overheating of the compressor, frosting of the evaporator, etc.

[0062] In some embodiments of the present invention, the above step S300, the step of determining the rotational speed of the blower according to the air duct length includes: determining the rotational speed of the blower according to the established relationship model among the air duct length, return air temperature, preset air volume, type of the blower, and rotational speed of the blower. When determining the rotational speed of the blower, considering the room temperature at this time (i.e., the return air temperature), the type of the blower, and the accurately determined air duct length, the determined rotational speed of the blower can meet the requirements of the preset air volume.

[0063] In some embodiments of the present invention, such as Figure 5As shown, before the step S100 of obtaining the parameters of the blower of the air duct machine, the parameters of the refrigerant circulation system, and / or the air flow parameters, the control method of the air duct machine further includes:

[0064] Step S400, control the air duct machine to start up and obtain the preset return air temperature of the air duct machine.

[0065] Step S500, determine the parameter detection temperature according to the preset return air temperature.

[0066] Step S600, obtain the return air temperature of the air duct machine.

[0067] When the return air temperature of the air duct machine reaches the parameter detection temperature, enter step S100 to obtain the parameters of the blower of the air duct machine, the parameters of the refrigerant circulation system, and / or the air flow parameters.

[0068] In the embodiment of the present invention, the air duct machine can be controlled according to the preset target temperature indoors, that is, the preset return air temperature, so that the indoor temperature gradually decreases. When the indoor temperature is about to reach the preset return air temperature, at this time, the various parameters of the air duct machine tend to be stable during operation. Detecting at this time can ensure the accuracy of the various parameters used to determine the duct length, and further improve the accuracy of determining the duct length.

[0069] In some embodiments of the present invention, in step S400, after controlling the air duct machine to start up, the blower works at a preset speed. That is to say, when obtaining the various parameters for determining the duct length, the blower can be made to run at a constant speed in a preset gear to prevent parameter changes caused by the variable speed operation of the blower.

[0070] In some embodiments of the present invention, the step S500 of determining the parameter detection temperature according to the preset return air temperature includes: obtaining a preset difference. The preset difference can be 0.5 degrees Celsius to 1.5 degrees Celsius. Determine the parameter detection temperature according to the preset return air temperature and the preset difference. When the air duct machine is refrigerating, the parameter detection temperature is greater than the preset return air temperature; when the air duct machine is heating, the parameter detection temperature is less than the preset return air temperature.

[0071] In some embodiments of the present invention, multiple preset return air temperatures can be set, and based on this, multiple duct lengths are obtained, and then the duct length value that appears the most times is used as the final duct length value to further improve the accuracy of determining the duct length.

[0072] In some embodiments of the present invention, the control method of the air duct machine further includes:

[0073] Every preset time interval, determine the type of the blower and the duct length of the air duct machine according to the parameters of the blower, the parameters of the refrigerant circulation system, and / or the air flow parameters.

[0074] Obtain the change rate of the duct length.

[0075] Determine the degree of dirtiness of the duct of the duct machine based on the change in the length of the duct.

[0076] In the embodiment of the present invention, when the duct air conditioner is used, a filter needs to be installed at the return air outlet to filter the dust in the air. The filter needs to be cleaned once every 7 days according to the operation manual. In the actual use of the air conditioner, the filter is not cleaned for a long time due to the high position of the air conditioner and the difficulty of removing the filter. As a result, the air volume of the return air outlet of the duct air conditioner is less than the standard air volume of the machine, and the air volume of the indoor unit is reduced accordingly, resulting in the air volume of the air outlet of the air conditioner being much less than the designed air volume. The indoor temperature cannot reach the set temperature for a long time, the user's air conditioning experience is poor, and the number of air conditioning complaints increases. The present invention reflects the degree of dirtiness of the duct by the change of the length of the duct. When the air volume changes due to dirtiness, it is assumed that the length of the duct has changed. Based on the determination step of the length of the duct, the length of the duct is re-determined, and the speed of the fan is re-determined, so that the duct air conditioner can have the expected air volume. At the same time, the change in the length of the duct can also feedback the degree of dirtiness of the duct. When the degree of dirtiness of the duct reaches a certain level, a reminder can be issued to prevent the duct air conditioner from being blocked by dirt and unable to work.

[0077] The flow chart that the present embodiment provides is not intended to indicate that the operation of the method will be performed in any particular order, or that all operations of the method are included in all every case. In addition, the method may include additional operations. Within the scope of the technical thinking that the present embodiment method provides, additional changes may be made to the above method.

[0078] It should be understood that in some embodiments, each part can be implemented by hardware, software, firmware or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system.

[0079] This embodiment also provides a computer program product 10 , a computer readable storage medium 20 , and a computer device 30 . Figure 6 is a schematic diagram of a computer program product 10 according to an embodiment of the present invention, Figure 7 is a schematic diagram of a computer-readable storage medium 20 according to an embodiment of the present invention, Figure 8It is a schematic diagram of a computer device 30 according to an embodiment of the present invention. The computer program product 10 includes a computer program 11, and when the computer program 11 is executed by a processor 32, it implements the steps of the control method of the air duct machine in any of the above embodiments. The computer-readable storage medium 20 stores the above computer program 11, and when the computer program 11 is executed by the processor 32, it implements the steps of the control method of the air duct machine in any of the above embodiments. The computer device 30 may include a memory 31, a processor 32, and the computer program 11 stored on the memory 31 and running on the processor 32.

[0080] The computer program 11 for performing the operations of the present invention may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, status setting data, configuration data of an integrated circuit, or source code or object code written in any combination of one or more programming languages and procedural programming languages. The computer program 11 may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the latter case, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer. In some embodiments, in order to perform various aspects of the present invention, an electronic circuit, including, for example, a programmable logic circuit, a field-programmable gate array (FPGA), or a programmable logic array (PLA), may execute computer-readable program instructions by utilizing the status information of the computer-readable program instructions to personalize the electronic circuit.

[0081] For the description of this embodiment, the computer program product 10 is a related product containing the computer program 11.

[0082] For the description of this embodiment, the computer-readable storage medium 20 is a tangible device capable of retaining and storing the computer program 11, which can be any device that can contain, store, communicate, propagate, or transmit the program 11 for use by or in connection with an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable storage medium 20 include the following: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital versatile disc (DVD), memory stick, floppy disk, mechanically encoded device, and any suitable combination of the above.

[0083] The computer device 30 can be, for example, a server, a desktop computer, a laptop computer, a tablet computer, or a smart phone. In some examples, the computer device 30 can be a cloud computing node. The computer device 30 can be described in the general context of computer system-executable instructions, such as program modules, executed by a computer system. Generally, program modules can include routines, programs, object programs, components, logic, data structures, etc. that perform specific tasks or implement specific abstract data types. The computer device 30 can be implemented in a distributed cloud computing environment where tasks are performed by remote processing devices linked through a communication network. In a distributed cloud computing environment, program modules can be located on local or remote computing system storage media including storage devices.

[0084] The computer device 30 can include a processor 32 suitable for executing stored instructions and a memory 31 that provides temporary storage space for the operation of the instructions during operation. The processor 32 can be a single-core processor, a multi-core processor, a computing cluster, or any other number of other configurations. The memory 31 can include random access memory (RAM), read-only memory, flash memory, or any other suitable storage system.

[0085] The computer device 30 can also include a network adapter / interface and an input / output (I / O) interface. The I / O interface allows data to be input and output with external devices that can be connected to the computer device. The network adapter / interface can provide communication between the computer device and a network, which is usually shown as a communication network.

[0086] At this point, those skilled in the art should recognize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

Claims

1. A control method for an air duct machine, characterized in that, Including: Obtaining parameters of the blower of the air duct machine, parameters of the refrigerant circulation system, and / or air flow parameters; Determining the type of the blower and the duct length of the air duct machine according to the parameters of the blower, the parameters of the refrigerant circulation system, and / or the air flow parameters; Determining the rotational speed of the blower according to the duct length, so that the air duct machine operates at a preset air volume.

2. The control method of the air duct machine according to claim 1, wherein: The parameters of the blower include power, the parameters of the refrigerant circulation system include the inlet liquid main pipe temperature of the air duct machine and the return air main pipe temperature of the air duct machine, and the air flow parameters include the return air temperature of the air duct machine; The step of determining the type of the blower and the duct length of the air duct machine according to the parameters of the blower, the parameters of the refrigerant circulation system, and / or the air flow parameters includes: Determining the type of the blower according to the return air temperature and the power; Determining the duct length of the air duct machine according to the type of the blower, the power, the inlet liquid main pipe temperature, and the return air main pipe temperature.

3. The control method of the air duct machine according to claim 2, wherein: Determining the type of the blower according to the relationship model established among the return air temperature, the power, and the type of the blower; Determining the duct length according to the relationship model established among the type of the blower, the power, the inlet liquid main pipe temperature, the return air main pipe temperature, and the duct length; The step of determining the rotational speed of the blower according to the duct length includes: Determining the rotational speed of the blower according to the relationship model established among the duct length, the return air temperature, the preset air volume, the type of the blower, and the rotational speed of the blower.

4. The control method of the air duct machine according to claim 2, characterized in that, Before the step of obtaining the parameters of the blower of the air duct machine, the parameters of the refrigerant circulation system, and / or the air flow parameters, it further includes: Controlling the air duct machine to start up and obtaining the preset return air temperature of the air duct machine; Determining the parameter detection temperature according to the preset return air temperature; Obtaining the return air temperature of the air duct machine; When the return air temperature of the air duct machine reaches the parameter detection temperature, obtaining the parameters of the blower of the air duct machine, the parameters of the refrigerant circulation system, and / or the air flow parameters.

5. The control method of the air duct machine according to claim 4, wherein: After controlling the air duct machine to start up, making the blower work at a preset rotational speed.

6. The control method of the air duct machine according to claim 4, wherein: The step of determining the parameter detection temperature according to the preset return air temperature includes: Obtaining a preset difference; Determining the parameter detection temperature according to the preset return air temperature and the preset difference; when the air duct machine is in cooling, the parameter detection temperature is greater than the preset return air temperature; when the air duct machine is in heating, the parameter detection temperature is less than the preset return air temperature.

7. The control method of the air duct machine according to claim 4, characterized in that, It further includes: Determining the type of the blower and the duct length of the air duct machine according to the parameters of the blower, the parameters of the refrigerant circulation system, and / or the air flow parameters every preset time period; Obtaining the change rate of the duct length; Determine the degree of dirt of the air duct of the air duct machine according to the change amount of the length of the air duct.

8. A computer-readable storage medium, characterized in that, A computer program is stored thereon, and when the computer program is executed by a processor, the steps of the control method of the air duct machine according to any one of claims 1 to 7 are implemented.

9. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, the steps of the control method of the air duct machine according to any one of claims 1 to 7 are implemented.

10. A computer device, characterized in that, It includes a memory, a processor, and a computer program stored on the memory. The processor executes the computer program to implement the steps of the control method of the air duct machine according to any one of claims 1 to 7.

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