Air cabinet unit, control method, device and system thereof and computer readable medium

Abstract

The invention relates to an air cabinet unit, a control method, device and system thereof and a computer readable medium. The method comprises the steps that current air quality parameters in a target room are collected, and an air cabinet unit is installed in the target room; under the condition that the current air quality parameter is smaller than the set air quality parameter, the passing resistance of air in the air cabinet unit is reduced by adjusting the position of the filter in the air cabinet unit, the set air quality parameter is the highest threshold value meeting the excellent indoor air condition, and the technical problem that the power consumption of the air cabinet unit is high in the operation process is solved.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to an air handling unit and its control method, device, system, and computer-readable medium. Background Art

[0002] A ceiling-mounted air handling unit is a commonly used air treatment device, widely used in various occasions, including but not limited to offices, shopping malls, hospitals, and factories. It is usually installed in the ceiling internal space of a building and provides air conditioning functions, including refrigeration, heating, humidification, dehumidification, and air purification, by connecting with the building ventilation system.

[0003] Ceiling-mounted air handling units are favored because of their concealed installation location, non-occupation of effective indoor space, and convenience for integration with other building facilities. These units usually include one or more fans, heat exchangers (such as evaporators and condensers), filtration devices, and other control components. According to specific application requirements, different accessories can also be equipped, such as heating elements, humidity controllers, and higher-level air purification systems. Due to their flexible design and high efficiency, existing ceiling-mounted air handling units generally have the problem of high power consumption during their operation. In addition to ceiling-mounted air handling units, other types of air handling units also have similar problems. High energy consumption not only increases the operation cost of users but also causes additional pressure on the environment because power consumption is often accompanied by greenhouse gas emissions. Summary of the Invention

[0004] This application provides an air handling unit and its control method, device, system, and computer-readable medium to solve the technical problem of high power consumption of the air handling unit during operation.

[0005] According to one aspect of the embodiments of this application, a control method for an air handling unit is provided, including: collecting the current air quality parameters in a target room where an air handling unit is installed; in the case where the current air quality parameters are less than the set air quality parameters, reducing the air passage resistance in the air handling unit by adjusting the position of the filter in the air handling unit, and the set air quality parameters are the highest threshold for meeting the excellent indoor air conditions.

[0006] Optionally, reducing the air passage resistance in the air handling unit by adjusting the position of the filter in the air handling unit includes: adjusting the position of the filter inside the air handling unit to reduce the air passage resistance in the air handling unit; or, moving all or part of the filter outside the air handling unit to reduce the air passage resistance in the air handling unit.

[0007] Optionally, adjust the position of the filter inside the air handling unit, including: adjusting the position of the filter to change from covering the cross-section of the air passage inside the air handling unit to not covering the cross-section of the air passage inside the air handling unit, or partially covering the cross-section of the air passage inside the air handling unit.

[0008] Optionally, move all or part of the filter out of the air handling unit, including at least one of the following: completely move the filter out of the air handling unit; move the filter to move a part of the filter out of the air handling unit; move part of the filter screen of the filter out of the air handling unit.

[0009] Optionally, the air handling unit is installed on the top of the target room, and the method further includes: collecting the current pressure difference between the air inlet and the air outlet of the filter; when the current pressure difference exceeds the set pressure difference value, controlling the filter to move towards the ground direction of the target room for easy maintenance of the filter, and the set pressure difference value is the lowest threshold value for characterizing that the filter is clogged.

[0010] Optionally, controlling the filter to move towards the ground direction of the target room includes: controlling the motor to start, and the speed reducer converts the mechanical energy of high speed and low torque output by the motor into mechanical energy of low speed and high torque to drive the reel to rotate to release the rolling curtain towards the ground direction, thereby driving the filter installed under the rolling curtain to move towards the ground direction.

[0011] According to another aspect of the embodiments of the present application, the present application also provides a control device for an air handling unit, including: a collection unit for collecting the current air quality parameters in the target room where the air handling unit is installed; a control unit for, when the current air quality parameters are less than the set air quality parameters, reducing the air passage resistance in the air handling unit by adjusting the position of the filter in the air handling unit, and the set air quality parameters are the highest threshold values for meeting the excellent indoor air conditions.

[0012] According to another aspect of the embodiments of the present application, the present application also provides a control system for an air handling unit, including: an air sensor for collecting the current air quality parameters in the target room where the air handling unit is installed; a driving mechanism for, when the current air quality parameters are less than the set air quality parameters, adjusting the position of the filter in the air handling unit to reduce the air passage resistance in the air handling unit, and the set air quality parameters are the highest threshold values for meeting the excellent indoor air conditions.

[0013] Optionally, the control system further includes: a differential pressure sensor for collecting the current differential pressure between the air inlet and the air outlet of the filter; the driving mechanism is further configured to: when the current differential pressure exceeds the set differential pressure value, control the filter to move towards the floor of the target room for easy maintenance of the filter, and the set differential pressure value is the lowest threshold for characterizing the dirty blockage of the filter; the driving mechanism includes: a motor, a reducer, a reel, a rolling curtain and a guide rail. After the motor is started, the reducer converts the high-speed and low-torque mechanical energy output by the motor into low-speed and high-torque mechanical energy to drive the reel to rotate and release the rolling curtain, and the rolling curtain drives the filter installed under the rolling curtain to move along the guide rail towards the floor direction.

[0014] According to another aspect of the embodiments of the present application, the present application provides an air handling unit, including the control system of the air handling unit described above, and may further include a memory, a processor, a communication interface and a communication bus. A computer program that can run on the processor is stored in the memory. The memory and the processor communicate through the communication bus and the communication interface. When the processor executes the computer program, the steps of the above method are implemented.

[0015] According to another aspect of the embodiments of the present application, the present application further provides a computer-readable medium having non-volatile program code executable by a processor, and the program code causes the processor to execute the above method.

[0016] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the related technologies:

[0017] The present application provides a control method for an air handling unit, which performs the following steps during operation: collecting the current air quality parameters in the target room, and an air handling unit is installed in the target room; when the current air quality parameters are less than the set air quality parameters, by adjusting the position of the filter in the air handling unit, the air passage resistance in the air handling unit is reduced, and the set air quality parameter is the highest threshold for meeting the excellent indoor air conditions. By adopting this solution, when the air quality is good, the filter can be automatically moved to enter the energy-saving mode, reducing the overall machine air resistance and the power consumption required for air circulation, and solving the technical problem of high power consumption during the operation of the air handling unit. Description of the Drawings

[0018] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings required for the description of the embodiments or the related art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 FIG. is a schematic diagram of a control system of an optional air handling unit according to an embodiment of the present application;

[0021] Figure 2 FIG. is a schematic diagram of an optional drive mechanism according to an embodiment of the present application;

[0022] Figure 3 FIG. is a schematic flowchart of a control method of an optional air handling unit according to an embodiment of the present application;

[0023] Figure 4 FIG. is a schematic flowchart of a control method of an optional air handling unit according to an embodiment of the present application;

[0024] Figure 5 FIG. is a block diagram of a control device of an optional air handling unit according to an embodiment of the present application;

[0025] Figure 6 FIG. is a schematic structural diagram of an optional electronic device provided by an embodiment of the present application. Detailed Embodiments

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0027] In subsequent descriptions, the suffixes such as "module", "component", or "unit" used to represent elements are only for the convenience of description of the present application, and they have no specific meaning in themselves. Therefore, "module" and "component" can be used interchangeably.

[0028] To solve the problems mentioned in the background art, according to one aspect of the embodiments of the present application, an embodiment of a control method for an air handling unit is provided.

[0029] In the embodiments of the present application, the above control method for the air handling unit can be applied to, for example Figure 1In the hardware environment of the control system of the air handling unit composed of the air sensor 101 and the drive mechanism 103 as shown. As Figure 1 shown, the drive mechanism 103 is connected to the air sensor 101. After the air sensor collects the current air quality parameters in the target room, it sends them to the drive mechanism; when the current air quality parameters are less than the set air quality parameters (the lowest threshold for meeting the excellent indoor air conditions), the drive mechanism adjusts the position of the filter in the air handling unit to reduce the air passage resistance in the air handling unit, thereby reducing the overall operating power consumption.

[0030] Optionally, for some special space occasions, the air handling unit is often placed in a very high place, and there is a problem that maintenance is extremely inconvenient (it may be even more difficult to perform complex operations at high altitudes). At this time, the current pressure difference between the air inlet and the air outlet of the filter can be collected by the pressure difference sensor 105 of the control system of the air handling unit and sent to the drive mechanism; when the current pressure difference exceeds the set pressure difference value (the lowest threshold for indicating that the filter is clogged), the drive mechanism controls the filter to move towards the ground direction of the target room to facilitate the maintenance of the filter.

[0031] In an alternative embodiment, referring to Figure 2 , the drive mechanism may include a motor, a reducer, a drum, a rolling curtain, a controller, and a guide rail (some components are not shown in Figure 2 ). After the motor is started, the reducer converts the high-speed and low-torque mechanical energy output by the motor into low-speed and high-torque mechanical energy to drive the drum to rotate and release the rolling curtain. The rolling curtain drives the filter installed below the rolling curtain to move along the guide rail towards the ground direction. When it reaches the appropriate height, maintenance personnel can perform maintenance on the ground, thereby avoiding the risk of falling during high-altitude operations and greatly improving the maintenance complexity and safety of the ceiling-mounted cabinet fan.

[0032] A control method for an air handling unit in an embodiment of the present application can be executed by the drive mechanism. As Figure 3 shown, the method may include the following steps:

[0033] Step S302, collect the current air quality parameters in the target room, and an air handling unit is installed in the target room.

[0034] Step S304, when the current air quality parameters are less than the set air quality parameters, reduce the air passage resistance in the air handling unit by adjusting the position of the filter in the air handling unit. The set air quality parameters are the highest threshold for meeting the excellent indoor air conditions.

[0035] The above current air quality parameters are parameters used to characterize the air quality in the target room. An air sensor is installed in the target room, which can be one or more of a PM2.5 concentration sensor, a PM10 concentration sensor, a CO2 concentration sensor, and a VOCs (volatile organic compound) sensor, etc. During actual operation, the above sensors periodically collect air quality data in the target room. For example, the PM2.5 concentration value, PM10 concentration value, CO2 concentration value, and other pollutant indicators in the indoor air are collected every 30 seconds. All the collected data is transmitted to the controller, and the controller analyzes it in real time to obtain the air quality parameters.

[0036] When the air sensor is one of them, the data collected by the air sensor can be directly used as the current air quality parameter. For example, it is set that PM2.5 is 75 μg / m 3 , and the current PM2.5 is 20 μg / m 3 . At this time, the current PM2.5 is less than or equal to 75 μg / m 3 , then step S304 can be executed; when there are multiple air sensors, the current air quality parameter can be obtained by fusing the data collected by these multiple sensors. The specific fusion method can be set according to requirements. In this solution, a set value can be configured for each type of sensor data, and only when all are less than the corresponding set value is it considered to meet the excellent indoor air conditions. For example, it is set that PM2.5 is 75 μg / m 3 , and it is set that PM10 is 100 μg / m 3 , the current PM2.5 is 30 μg / m 3 , and the current PM10 is 60 μg / m 3 , then step S304 can be executed.

[0037] By adopting the above technical solution of the present application, when the indoor air quality is excellent, the position of the filter can be automatically adjusted to reduce the air flow resistance, improve the working efficiency of the air handling unit, thereby effectively reducing the overall power consumption and prolonging the service life of the equipment. At the same time, unnecessary high-load operation is avoided, and the balance between energy conservation and air purification is achieved.

[0038] In an alternative embodiment, when reducing the air passage resistance in the air handling unit by adjusting the position of the filter in the air handling unit, it mainly includes the following two main adjustment methods:

[0039] One is to adjust the position of the filter inside the air handling unit to reduce the air passage resistance in the air handling unit.

[0040] When specifically adjusting the position of the filter, the filter is adjusted from covering the cross-section of the air passage in the air handling unit to not covering the cross-section of the air passage in the air handling unit, or partially covering the cross-section of the air passage in the air handling unit.

[0041] For example, a receiving cavity is provided for the filter at a position inside the unit adjacent to the air passage (which can be adjacent to the air passage), and a track is laid for the filter at the bottom of the air passage. In this way, the filter can be pushed into the air passage along the track from the receiving cavity, achieving full coverage of the cross-section of the air passage. Conversely, the filter can also be pushed into the receiving cavity along the track from the air passage completely or partially, so that the space before and after the original filter position is directly connected partially or completely, reducing the resistance of air flow.

[0042] Again, a driving component is installed for the filter inside the unit (which can be the aforementioned driving mechanism or a separate component that drives the filter to rotate or turn over), to drive the filter to rotate or turn over. The driving component can be a rotating base, and the rotating base can drive the filter or the filter screen to rotate, so that the angle of the filter or the filter screen changes (assuming that when the filter screen is parallel to the cross-section of the passage, it can exactly cover the cross-section completely, and when it rotates, there will be an increasingly large gap at the edge of the passage). At this time, the air passage will not be completely covered, thus reducing the resistance.

[0043] Again, an electric push rod is installed for the filter inside the unit. When the filter screen is parallel to the cross-section of the passage, it can exactly cover the cross-section completely. When the electric push rod pulls or pushes the filter screen, the air passage will not be completely covered, thus reducing the resistance.

[0044] Secondly, the filter is completely or partially moved out of the air handling unit to reduce the resistance of the air passing through the air handling unit.

[0045] In the above second adjustment method, it can be further divided into the following three types:

[0046] a) The filter is completely moved out of the air handling unit.

[0047] Taking the realization of the complete movement of the filter by the aforementioned driving mechanism as an example, the driving mechanism can be installed above the unit. When moving the filter out above the air handling unit, the motor is controlled to start, and the speed reducer converts the high-speed and low-torque mechanical energy output by the motor into low-speed and high-torque mechanical energy to drive the reel to rotate to retract the rolling curtain, and the rolling curtain drives the filter installed below the rolling curtain to move upward along the vertical guide rail, so as to reach above the air handling unit; when moving the filter out below the air handling unit, the motor is controlled to start, and the speed reducer converts the high-speed and low-torque mechanical energy output by the motor into low-speed and high-torque mechanical energy to drive the reel to rotate to release the rolling curtain, and the rolling curtain drives the filter installed below the rolling curtain to move downward along the vertical guide rail, so as to reach below the air handling unit. Similarly, if it is necessary to move the filter out to the left or right of the air handling unit, only the track needs to be changed to the horizontal direction, and the control method is similar to the above and will not be elaborated.

[0048] b) Move the filter to move a part of the filter outside the air handling unit.

[0049] This adjustment method is similar to the adjustment method of the previous solution a), and the only difference is to control the moving distance of the filter so that a part of it still remains in the air passing channel, so it will not be elaborated here.

[0050] c) Move a part of the filter mesh of the filter outside the air handling unit.

[0051] The above-mentioned moving a part of the filter mesh of the filter to the outside includes two meanings. One is to move a part of a specific filter mesh outside the air handling unit, and the specific implementation method can refer to the previous text; the other is to move M filter meshes out of the N filter meshes of the filter (M ≤ N) outside the air handling unit.

[0052] Taking the latter as an example, multiple-stage adjustable filter meshes are usually set inside the filter. Usually, the filter meshes with better filtering effect have greater resistance. Therefore, it can be considered to remove this part of the filter meshes when the air quality is good. For example, the common filter of the air handling unit includes a primary filter mesh, a HEPA high-efficiency filter mesh, and an activated carbon adsorption layer filter mesh, etc. Among them, the HEPA high-efficiency filter mesh and the activated carbon adsorption layer filter mesh have good filtering effect but greater resistance. Therefore, these two filter meshes can be removed. Only the primary filter mesh is retained, which can significantly reduce the resistance when the air flows through, improve the air supply efficiency of the fan, thereby increasing the air circulation speed and reducing the energy consumption.

[0053] During the operation of the ceiling-mounted air handling unit, pollutants such as dust and particulate matter in the air will gradually accumulate on the surface of the filter, resulting in filter blockage. As the degree of blockage increases, the pressure difference between the air inlet and the air outlet will increase, which will further affect the fan efficiency, increase the energy consumption, and may even cause equipment failures. To solve this problem, in the prior art, maintenance personnel need to climb to high places for maintenance, which has potential safety hazards.

[0054] In another alternative embodiment, to solve the problem of potential safety hazards in the above-mentioned maintenance, this solution is adopted. The current pressure difference between the air inlet of the filter and the air outlet of the filter can be collected in real time; when the current pressure difference exceeds the set pressure difference value, it is determined that the filter is dirty and blocked, and the filter is controlled to move towards the ground direction of the target room to facilitate the maintenance of the filter. The set pressure difference value is the lowest threshold value used to characterize the dirty and blocked state of the filter.

[0055] For example, a differential pressure sensor periodically (e.g., once per minute) collects the differential pressure value between the air inlet and outlet of the filter (e.g., the current differential pressure value = 180 Pa), compares the current differential pressure with the set differential pressure value (the set differential pressure value is set according to experimental data or experience, for example, it is 150 Pa, and this value represents that the filter starts to have a slight blockage). If the current differential pressure value is less than or equal to the set differential pressure value, it means that the filter is operating well and there is no blockage. If the current differential pressure value > the set differential pressure value, the controller issues an instruction to start the drive mechanism, so that the filter moves a certain distance vertically towards the ground from the original installation position (e.g., descends 100 - 300 cm) for easy maintenance.

[0056] In the drive mechanism, it includes: a motor, a reducer, a reel, a rolling curtain, and guide rails, etc. The rolling curtain can be made of a high-strength and fold-resistant composite material or a metal braided belt. Limited position buckles are provided at both ends of the rolling curtain to prevent deviation. A crossbeam bracket is provided below the rolling curtain and is fixedly connected to the filter frame to ensure stable downward movement of the whole. The reduction ratio of the reducer is 1:50 - 1:100 to obtain sufficient torque to drive the filter load. The reducer has a self-locking function to prevent accidental sliding under the action of gravity.

[0057] When the drive mechanism operates, the motor starts. The reducer converts the high-speed and low-torque mechanical energy output by the motor into low-speed and high-torque mechanical energy to drive the reel to rotate and release the rolling curtain. The rolling curtain drives the filter installed below the rolling curtain to move along the guide rail in the direction towards the ground. After the filter descends to an appropriate height, the controller controls the motor to stop running; at the same time, it triggers a local audible and visual alarm or sends a remote signal to the monitoring platform to prompt "the filter needs to be cleaned or replaced". After the maintenance is completed, the maintenance personnel manually or through the control system start a reverse operation instruction; the motor rotates in reverse to drive the reel to retract the rolling curtain and restore the filter to the original upper position; after the controller confirms that the reset is completed, it clears the alarm state and the system resumes normal operation.

[0058] 1) It can intelligently judge the blockage state: accurately judge the dirt blockage situation of the filter through differential pressure monitoring, avoiding resource waste or undetected risks caused by regular manual replacement; 2) It can improve the maintenance efficiency: the automatic downward movement function enables maintenance personnel to access the filter without disassembling the air handling unit housing, significantly improving the maintenance efficiency; 3) It can ensure the stable operation of the system: effectively prevent problems such as reduced air volume and decreased energy efficiency caused by filter blockage, and extend the equipment life; 4) It is applicable to complex environments: especially applicable to air handling unit sets installed at high altitudes, with limited space or difficult to access, such as scenarios in ships, commercial building ceiling spaces, etc.

[0059] The present application provides a solution that is convenient for disassembly and maintenance. A differential pressure switch sensor is provided at the filter end, an air sensor is provided at the air inlet end of the unit, and a wind speed sensor is provided at the air outlet of the unit. When the differential pressure switch detects that the pressure difference value of the filter screen exceeds the set value and gives an alarm, maintenance can be automatically carried out. Additionally, when the air sensor detects that the air quality is good, the energy-saving mode of the unit is activated, and the control device controls the filter to move downward by a certain distance. At this time, there is no filter at the front end, the overall pressure loss of the unit is reduced, and the rotational speed of the unit motor decreases accordingly, meeting the air outlet requirements and enabling the unit to operate in an energy-saving manner. As an optional embodiment, the technical solution of the present application will be further described in detail below in combination with Figure 4 the following:

[0060] Step 1, during the operation of the unit, the air value M (i.e., the air quality parameter) is periodically detected.

[0061] A PM2.5 sensor can be installed at the front end of the unit to detect the PM2.5 value as M in real time, and the preset good air value is M 设 .

[0062] Step 2, determine whether the air value M is less than or equal to the set air quality parameter M 设 .

[0063] Step 3, if M ≤ M 设 , then the motor rotates to drive the reel to rotate counterclockwise, and the rolling curtain drives the filter to move downward. Since the wind resistance becomes smaller, at this time, the control device controls the rotational speed of the unit motor to decrease (entering the energy-saving mode), and the air outlet wind speed remains unchanged.

[0064] When it is detected that M ≤ M within the continuous duration T 设 , it indicates that the air quality is good at this time. At this time, the unit operates in the energy-saving mode, and the maintenance device starts automatically. The reel rotates counterclockwise, and then drives the rolling curtain and the filter installation module. At this time, there is no filter at the front end, and the overall pressure loss of the unit is reduced. Since the overall pressure loss of the unit is reduced, the air outlet wind speed of the unit will increase at this time. Therefore, the control device controls the rotational speed of the motor to decrease to ensure that the air outlet wind speed of the unit remains the same as before, and the unit realizes energy-saving operation.

[0065] Step 4, if M > M 设 , then the pressure difference value P is detected.

[0066] After the unit has been operating normally for a period of time, dust and dirt often accumulate on the filter. At this time, the differential pressure switch of the unit detects the differential pressure P in real time and returns the real-time detected differential pressure P value to the controller.

[0067] Step 5, determine whether the differential pressure value P is greater than or equal to the set differential pressure value P 设 .

[0068] Step 6, if P ≥ P 设, the motor rotates, driving the reel to rotate counterclockwise, and the rolling curtain drives the filter to move downward; otherwise, step 9 is executed.

[0069] When P is less than or equal to the set value P 设 , it indicates that the filter is not severely clogged at this time and is within an acceptable range. At this time, the unit still operates normally.

[0070] When P is greater than or equal to the set value P 设 , it indicates that the unit filter is severely clogged and needs to be cleaned in time. At this time, the control drive mechanism operates (including the motor, reel, reducer, brake, guide rail, filter installation module, rolling curtain, etc.). The motor provides power, and the reducer can convert the high-speed rotation of the motor into an output with low speed and large torque, and then drives the reel to rotate. The reel drives the rolling curtain to rotate. When the reel rotates clockwise, the rolling curtain follows the reel and is stored in the reel. The lower part of the rolling curtain drives the filter installation module, and the installation module moves upward with the rolling curtain. When the reel rotates counterclockwise, the rolling curtain follows the reel downward, and the lower part of the rolling curtain drives the filter installation module to move downward to a suitable height for convenient customer maintenance.

[0071] Step 7, the customer cleans the filter.

[0072] Step 8, the motor starts and drives the reel to rotate clockwise, and the rolling curtain drives the filter to move upward to the air inlet of the unit.

[0073] Step 9, after the filter position adjustment is completed, the unit resumes the normal operating state.

[0074] Adopting the technical solution of the present application is convenient for disassembly and maintenance, and can realize intelligent maintenance of the front-end filter of the unit. In addition, an air sensor is provided at the front end of the unit, which can detect the air quality. When the detected air quality is better than the set value, the filter device can be moved outside the unit at this time. This method can effectively reduce the air resistance of the unit, thereby realizing energy-saving operation.

[0075] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0076] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases, the former is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present application.

[0077] According to another aspect of the embodiments of the present application, as Figure 5 shown, a control device for a fan coil unit is further provided, including:

[0078] An acquisition unit 501, configured to acquire the current air quality parameters in a target room, where a fan coil unit is installed in the target room;

[0079] A control unit 503, configured to, when the current air quality parameters are less than the set air quality parameters, reduce the air passage resistance in the fan coil unit by adjusting the position of the filter in the fan coil unit, where the set air quality parameters are the highest threshold for meeting the excellent indoor air conditions.

[0080] It should be noted that the acquisition unit 501 in this embodiment can be used to execute step S302 in the embodiments of the present application, and the control unit 503 in this embodiment can be used to execute step S304 in the embodiments of the present application.

[0081] Optionally, the control unit is further configured to: adjust the position of the filter inside the fan coil unit to reduce the air passage resistance in the fan coil unit; or, move all or part of the filter out of the fan coil unit to reduce the air passage resistance in the fan coil unit.

[0082] Optionally, the control unit is further configured to: adjust the position of the filter to change the filter from covering the cross-section of the air passage in the fan coil unit to not covering the cross-section of the air passage in the fan coil unit, or partially covering the cross-section of the air passage in the fan coil unit.

[0083] Optionally, the control unit is further configured to: completely move the filter out of the fan coil unit; move the filter to move a part of the filter out of the fan coil unit; move a part of the filter screen of the filter out of the fan coil unit.

[0084] Optionally, the air handling unit is installed on the top of the target room, and the control unit is further configured to: collect the current pressure difference between the air inlet and the air outlet of the filter; and when the current pressure difference exceeds a set pressure difference value, control the filter to move towards the ground of the target room so as to facilitate the maintenance of the filter, where the set pressure difference value is the lowest threshold for characterizing the clogging of the filter.

[0085] Optionally, the control unit is further configured to: control the motor to start, and the reducer converts the mechanical energy with high speed and low torque output by the motor into mechanical energy with low speed and high torque, so as to drive the reel to rotate to release the rolling curtain towards the ground, thereby driving the filter installed below the rolling curtain to move towards the ground.

[0086] It should be noted here that the examples and application scenarios implemented by the above modules and the corresponding steps are the same, but are not limited to the content disclosed in the above embodiments. It should be noted that the above modules, as part of the device, can operate in a hardware environment as shown in Figure 1 and can be implemented by software or by hardware.

[0087] According to another aspect of the embodiments of the present application, the present application provides an electronic device, as shown in Figure 6 , including a memory 601, a processor 603, a communication interface 605 and a communication bus 607. A computer program that can run on the processor 603 is stored in the memory 601. The memory 601 and the processor 603 communicate through the communication interface 605 and the communication bus 607. When the processor 603 executes the computer program, the steps of the above method are implemented.

[0088] The memory and the processor in the above electronic device communicate through the communication bus and the communication interface. The communication bus may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc.

[0089] The memory may include a Random Access Memory (RAM), and may also include a non-volatile memory, such as at least one disk memory. Optionally, the memory may also be at least one storage device located far from the aforementioned processor.

[0090] The above-mentioned processor may be a general-purpose processor, including a central processing unit (CPU for short), a network processor (NP for short), etc.; it may also be a digital signal processor (DSP for short), an application specific integrated circuit (ASIC for short), a field-programmable gate array (FPGA for short), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0091] According to another aspect of the embodiments of the present application, there is also provided a computer program product or a computer program. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the steps of any one of the above embodiments.

[0092] Optionally, in the embodiments of the present application, the computer-readable medium is set to store program code for the processor to execute the following steps:

[0093] Collect the current air quality parameters in the target room, where an air handling unit is installed in the target room;

[0094] When the current air quality parameters are less than the set air quality parameters, by adjusting the position of the filter in the air handling unit, reduce the air passage resistance in the air handling unit, where the set air quality parameters are the highest threshold for meeting the excellent indoor air conditions.

[0095] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and will not be repeated here.

[0096] When the embodiments of the present application are specifically implemented, reference may be made to the above various embodiments, and they have corresponding technical effects.

[0097] It will be understood that the embodiments described herein can be implemented using hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in this application, or any combination thereof.

[0098] For a software implementation, the techniques described herein can be implemented by units that execute the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented within the processor or external to the processor.

[0099] Those of ordinary skill in the art will realize that the units and algorithm steps of the examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0100] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0101] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules is only a logical functional division, and there can be other division methods in actual implementation. For example, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed with each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0102] The unit described as a separating component may or may not be physically separated. The component shown as a unit may or may not be a physical unit, that is, it may be located in one place or may be distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0103] In addition, in each embodiment of the present application, each functional unit can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0104] If the described function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present application, in essence, or the part that contributes to the prior art or part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical discs that can store program codes. It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0105] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A control method for a fan coil unit, characterized in that, Including: Collecting the current air quality parameters in the target room, wherein an air handling unit is installed in the target room; When the current air quality parameters are less than the set air quality parameters, by adjusting the position of the filter in the air handling unit, to reduce the air passage resistance in the air handling unit, wherein the set air quality parameters are the highest threshold for meeting the excellent indoor air conditions.

2. The method according to claim 1, wherein By adjusting the position of the filter in the air handling unit to reduce the air passage resistance in the air handling unit, including: Adjusting the position of the filter inside the air handling unit to reduce the air passage resistance in the air handling unit; or, Moving all or part of the filter out of the air handling unit to reduce the air passage resistance in the air handling unit.

3. The method according to claim 2, characterized in that Adjusting the position of the filter inside the air handling unit includes: Adjusting the position of the filter to change the cross-section of the air passage in the air handling unit covered by the filter from covering the cross-section of the air passage in the air handling unit to not covering the cross-section of the air passage in the air handling unit or partially covering the cross-section of the air passage in the air handling unit.

4. The method according to claim 2, wherein Moving all or part of the filter out of the air handling unit includes at least one of the following: Moving the filter completely out of the air handling unit; Moving the filter to move a part of the filter out of the air handling unit; Moving part of the filter screen of the filter out of the air handling unit.

5. The method according to any one of claims 1 to 4, characterized in that The air handling unit is installed on the top of the target room, and the method further includes: Collecting the current pressure difference between the air inlet and the air outlet of the filter; When the current pressure difference exceeds the set pressure difference value, controlling the filter to move towards the ground direction of the target room to facilitate the maintenance of the filter, wherein the set pressure difference value is the lowest threshold for indicating that the filter is clogged.

6. The method according to claim 5, wherein Controlling the filter to move towards the ground direction of the target room includes: Controlling the motor to start, and the reducer converts the mechanical energy of high speed and low torque output by the motor into mechanical energy of low speed and high torque to drive the reel to rotate and release the rolling curtain towards the ground direction, thereby driving the filter installed below the rolling curtain to move towards the ground direction.

7. A control device for a wind cabinet unit, characterized in that, Including: A collecting unit, configured to collect the current air quality parameters in the target room, wherein an air handling unit is installed in the target room; A control unit, configured to, when the current air quality parameters are less than the set air quality parameters, reduce the air passage resistance in the air handling unit by adjusting the position of the filter in the air handling unit, wherein the set air quality parameters are the highest threshold for meeting the excellent indoor air conditions.

8. A control system of a wind cabinet unit, characterized in that, Including: An air sensor, configured to collect the current air quality parameters in the target room, wherein an air handling unit is installed in the target room; A driving mechanism, configured to adjust the position of a filter in the air handling unit to reduce the air flow resistance in the air handling unit when the current air quality parameter is less than a set air quality parameter, wherein the set air quality parameter is the highest threshold for meeting excellent indoor air conditions.

9. The control system of the air handling unit according to claim 8, wherein: The control system further includes: a differential pressure sensor, configured to collect a current differential pressure between an air inlet and an air outlet of the filter; wherein the driving mechanism is further configured to: when the current differential pressure exceeds a set differential pressure value, control the filter to move towards the ground of the target room to facilitate maintenance of the filter, wherein the set differential pressure value is the lowest threshold for indicating that the filter is clogged; The driving mechanism includes: a motor, a reducer, a reel, a rolling curtain, and a guide rail. After the motor is started, the reducer converts the high-speed and low-torque mechanical energy output by the motor into low-speed and high-torque mechanical energy to drive the reel to rotate and release the rolling curtain, and the rolling curtain drives the filter installed below the rolling curtain to move along the guide rail towards the ground.

10. An air handling unit, comprising the control system of the filter according to claim 8 or 9.

11. A computer-readable medium having non-volatile program code executable by a processor, characterized in that, The program code causes the processor to execute the control method of the air handling unit according to any one of claims 1 to 6.

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