Dehumidification control method, device, electronic device and storage medium for air conditioning unit

Abstract

The present invention relates to the field of air conditioning control technology, and in particular to a dehumidification control method, device, electronic device and storage medium for an air conditioning unit. The method comprises: obtaining a passenger load factor; inputting the passenger load factor into a preset air volume control model to obtain the fresh air volume and supply air volume output by the air volume control model; determining the fresh air wet load according to the fresh air volume and a preset target moisture content; inputting the fresh air wet load and supply air volume into a preset humidity control model to obtain the target dehumidification amount output by the humidity control model; and controlling the compressor to perform a dehumidification operation at a working frequency corresponding to the target dehumidification amount according to the target dehumidification amount and the correspondence between the operating frequency of the compressor in the preset air conditioning unit and the dehumidification amount. Through the present invention, control is performed before the relative humidity in the target space changes, which is conducive to maintaining a stable ambient humidity.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning control, and in particular to a dehumidification control method, device, electronic device and storage medium for an air conditioning unit. Background Art

[0002] In environments with high passenger load fluctuations, such as shopping malls or rail transit, the humidity load can vary significantly. When the passenger load of the target space changes, the required fresh air volume also changes. When the outdoor environment fluctuates significantly, such as when entering and exiting a tunnel in rail transit, the humidity content of the fresh air can also change, leading to changes in the fresh air humidity load.

[0003] The current dehumidification method of air conditioning units does not introduce feedback control of the new air humidity load, resulting in the humidity in the target space being out of control in a short period of time after the new air humidity load changes, causing discomfort to people in the target space. Summary of the Invention

[0004] The present invention provides a dehumidification control method for an air-conditioning unit, and the technical solution is as follows:

[0005] A dehumidification control method for an air conditioning unit is applied to humidity control of a target space, the method comprising:

[0006] Obtaining the passenger load factor of the target space;

[0007] Inputting the passenger load factor into a preset air volume control model to obtain the fresh air volume and supply air volume output by the air volume control model;

[0008] determining the fresh air humidity load according to the fresh air volume and the preset target humidity content;

[0009] Inputting the fresh air humidity load and the air supply volume into a preset humidity control model to obtain a target dehumidification volume output by the humidity control model;

[0010] According to the target dehumidification amount and a preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the dehumidification amount, the compressor is controlled to perform a dehumidification operation at an operating frequency corresponding to the target dehumidification amount.

[0011] In this way, when the moisture content of the fresh air changes, timely feedback can be given, and dehumidification can be performed by adjusting the compressor frequency to prevent the relative humidity in the target space from getting out of control due to untimely adjustment. Control can be performed before the relative humidity in the target space changes, which is conducive to maintaining the ambient humidity in the target space stable.

[0012] In one embodiment, inputting the fresh air humidity load and the air supply volume into a preset humidity control model to obtain the target dehumidification volume output by the humidity control model includes:

[0013] Obtaining a first humidity content of the air in the target space, a third humidity content of the air supplied by the air conditioning unit, a second temperature and humidity of the fresh air in the air conditioning unit, and the air quality in the target space;

[0014] determining a second moisture content of the fresh air in the air-conditioning unit according to the second temperature and humidity, and calculating a fourth moisture content of the mixed air in the air-conditioning unit according to the first moisture content and the second moisture content;

[0015] Inputting the air quality in the target space, the third moisture content, the fourth moisture content, the fresh air humidity load, and the air supply volume into the humidity control model to obtain a target dehumidification amount output by the humidity control model;

[0016] The humidity control model is expressed as:

[0017]

[0018] G Si (d c -d s )=W f AT K BT0;

[0019] Among them, G Si is the air supply mass flow rate, d c is the fourth moisture content, d s is the third moisture content, d T is the target moisture content, K p is the proportional constant, K i is the integration constant, K d is the differential constant, G is the air quality in the target space, G Xi (d X -d T ) is the new rheumatic load, W f is the target dehumidification capacity, AT K is the ambient temperature correction, and BT0 is the mixed air temperature correction.

[0020] In one embodiment, obtaining the first humidity of the air in the target space, the third humidity of the air supplied by the air conditioning unit, and the second temperature and humidity of the fresh air in the air conditioning unit includes:

[0021] Acquiring a first temperature and humidity of the air in the target space;

[0022] querying a preset first psychrometric chart and / or a first psychrometric table to obtain a first moisture content that matches the first temperature and humidity, and querying a preset second psychrometric chart and / or a second psychrometric table to obtain a second moisture content that matches the second temperature and humidity;

[0023] Obtaining a third temperature and humidity of the air supplied by the air conditioning unit, and querying a preset third psychrometric chart and / or a third psychrometric table to obtain a third moisture content that matches the third temperature and humidity;

[0024] Alternatively, a third temperature of the supply air in the air-conditioning unit and a machine dew point temperature are obtained, and a third moisture content of the supply air in the air-conditioning unit is determined based on the third temperature and the machine dew point temperature.

[0025] In one embodiment, inputting the third moisture content, the fourth moisture content, the fresh air humidity load, and the supply air volume into the humidity control model to obtain the target dehumidification volume output by the humidity control model includes:

[0026] Obtain the ambient temperature and the mixed air temperature at the first moment;

[0027] determining, based on the ambient temperature at the first moment and the mixed air temperature at the first moment, an ambient temperature correction amount corresponding to the ambient temperature at the first moment and a mixed air temperature correction amount corresponding to the mixed air temperature at the first moment;

[0028] The ambient temperature correction amount, the mixed air temperature correction amount, the third moisture content, the fourth moisture content, the fresh air wet load and the air supply volume are input into the humidity control model to obtain the target dehumidification amount output by the humidity control model.

[0029] In this way, the accuracy of the output target dehumidification amount is improved.

[0030] In one embodiment, before obtaining the passenger load factor of the target space, the method further includes:

[0031] Under different passenger load factors, different fresh air valve openings and different return air valve openings, the corresponding fresh air volume and supply air volume are tested;

[0032] According to the passenger load factor at the first moment, the fresh air valve opening at the first moment, and the corresponding fresh air volume and supply air volume under the return air valve opening at the first moment, the relationship between the passenger load factor at the first moment, the fresh air valve opening at the first moment, and the return air valve opening at the first moment and the fresh air volume and supply air volume is determined to form the air volume control model.

[0033] In one embodiment, before obtaining the passenger load factor of the target space, the method further includes:

[0034] Under different ambient temperatures and different mixed air temperatures, the compressor is used to perform dehumidification operations at different operating frequencies;

[0035] According to the dehumidification amount corresponding to each operating frequency of the compressor at the ambient temperature of the first moment and the mixed air temperature at the first moment, the correspondence between the operating frequency and dehumidification amount of the compressor at the ambient temperature of the first moment and the mixed air temperature at the first moment is determined.

[0036] In one embodiment, before inputting the fresh air humidity load and the air supply volume into a preset humidity control model and obtaining the target dehumidification volume output by the humidity control model, the method further includes: obtaining the fresh air humidity content of the air conditioning unit at a first moment and the fresh air humidity content of the air conditioning unit at a second moment;

[0037] determining a fresh air humidity content change value according to the fresh air humidity content at the first moment and the fresh air humidity content at the second moment, and comparing the fresh air humidity content change value with a first preset value;

[0038] If the change in the fresh air moisture content is greater than a first preset value, the fresh air humidity load and the air supply volume are input into a preset humidity control model to obtain a target dehumidification volume output by the humidity control model.

[0039] This prevents the compressor frequency from being adjusted too frequently.

[0040] The present invention also provides the following technical solutions:

[0041] A dehumidification control device for an air-conditioning unit, applied to humidity control of a target space, comprising:

[0042] An acquisition module, configured to acquire the passenger load factor of the target space;

[0043] an output module, configured to input the passenger load factor into a preset air volume control model to obtain the fresh air volume and supply air volume output by the air volume control model, and input the fresh air humidity load and the supply air volume into a preset humidity control model to obtain the target dehumidification amount output by the humidity control model;

[0044] The control module is used to control the compressor to perform dehumidification operation at an operating frequency corresponding to the target dehumidification amount according to the target dehumidification amount and the preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the dehumidification amount.

[0045] The present invention also provides the following technical solutions:

[0046] An electronic device includes a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the above-mentioned dehumidification control method for the air-conditioning unit.

[0047] The present invention also provides the following technical solutions:

[0048] A storage medium stores a computer program, wherein the computer program implements the above-mentioned dehumidification control method for an air-conditioning unit when executed by a processor.

[0049] Compared with related technologies, the present invention inputs the new air humidity load into a preset humidity control model and makes real-time adjustments based on changes in the new air humidity load. It can dehumidify the target space by adjusting the compressor frequency before the humidity gets out of control, thereby improving the reliability of dehumidification and enhancing the user experience.

[0050] The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below so that other features, objects, and advantages of the invention are more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0052] Figure 1 The logic of the dehumidification control method of the air conditioning unit provided by the present invention is Figure 1 ;

[0053] Figure 2 The logic of the dehumidification control method of the air conditioning unit provided by the present invention is Figure 2 ;

[0054] Figure 3 A structural block diagram of the dehumidification control device for an air-conditioning unit provided by the present invention;

[0055] Figure 4 This is a schematic structural diagram of the electronic device provided by the present invention.

[0056] The symbols in the figure mean the following:

[0057] 10. Acquisition module; 20. Output module; 30. Control module; 302. Processor; 304. Memory; 306. Transmission device; 308. Input and output device. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described and illustrated in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the contents disclosed by the present invention, some changes such as design, manufacturing or production based on the technical contents disclosed by the present invention are only conventional technical means and should not be understood as the contents disclosed by the present invention being insufficient.

[0059] References to "embodiments" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments, unless there is a conflict.

[0060] Unless otherwise defined, technical or scientific terms used in the present invention shall have the ordinary meaning as understood by a person of ordinary skill in the art to which the invention pertains. The terms "a," "an," "a kind," "the," and similar expressions used in the present invention do not limit the number and may refer to the singular or plural. The terms "comprise," "include," "have," and any variations thereof used in the present invention are intended to cover non-exclusive inclusions; for example, a process, method, system, product, or device comprising a series of steps or modules (units) is not limited to the listed steps or units but may also include steps or units not listed, or may include other steps or units inherent to the process, method, product, or device. The terms "connect," "connected," "coupled," and similar expressions used in the present invention are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. The term "plurality" used in the present invention means greater than or equal to two. "And / or" describes an association relationship between associated objects, indicating that three relationships may exist. For example, "A and / or B" may mean: A exists alone, A and B exist simultaneously, or B exists alone. The terms "first", "second", "third", etc. involved in the present invention are merely used to distinguish similar objects and do not represent a specific ordering of the objects.

[0061] See Figure 1The present invention provides a dehumidification control method for an air conditioning unit, which is applied to the humidity control of a target space. The target space may be a place with a large flow of people, such as rail transit, shopping malls, etc. The rail transit may be a traditional railway, subway, light rail, tram, etc. The method comprises:

[0062] Step S1: Obtain the passenger load factor of the target space.

[0063] In this embodiment, the network system sends a passenger load factor signal every first preset time, and the first preset time can be adjusted. Step S2, input the passenger load factor into a preset air volume control model to obtain the fresh air volume and supply air volume output by the air volume control model.

[0064] Step S3: determining the fresh air humidity load according to the fresh air volume and the preset target humidity content.

[0065] Step S4: input the new humidity load and air supply volume into a preset humidity control model to obtain the target dehumidification volume output by the humidity control model.

[0066] Step S5, according to the target dehumidification capacity and the preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the dehumidification capacity, controlling the compressor to perform a dehumidification operation at an operating frequency corresponding to the target dehumidification capacity.

[0067] In this way, when the passenger load factor changes, the controller of the air-conditioning unit will adjust the opening of the fresh air valve. When the outdoor environment changes, the moisture content of the fresh air will change, resulting in a large instantaneous change in the fresh air wet load. By inputting the fresh air wet load variable into the preset humidity control model, the change in relative humidity in the target space caused by the change in fresh air wet load can be controlled in a timely manner by adjusting the compressor frequency. Control can be performed before the relative humidity in the target space changes, which is conducive to maintaining the ambient humidity in the target space stable.

[0068] In step S1, while obtaining the passenger load factor, the air conditioning unit's fresh air valve opening, the air conditioning unit's return air valve opening, and the second temperature and humidity of the fresh air in the air conditioning unit are also obtained. This allows the detection of changes in the fresh air's moisture content. The second temperature and humidity of the fresh air are collected by the temperature and humidity sensor and processed by the controller.

[0069] In step S2, while the passenger load factor is input into the preset air volume control model, the fresh air valve opening and the supply air valve opening are also input into the preset air volume control model.

[0070] In step S3, the fresh air humidity load is determined according to the second temperature and humidity, the fresh air volume and the preset target humidity content. The fresh air humidity load is calculated by the following formula G Xi (d X -d T );

[0071] Among them, G Xi is the fresh air mass flow rate at the corresponding opening, d X is the second humidity content of fresh air, determined by the second temperature and humidity, d T is the preset target moisture content.

[0072] G Xi =L Xi ×ρ, where L Xi is the fresh air volume at the corresponding opening, and ρ is the fresh air density. In the present invention, air volume refers to volume flow.

[0073] In step S4, the new humidity load and the air supply volume are input into a preset humidity control model to obtain a target dehumidification volume output by the humidity control model, including:

[0074] Step S41: obtaining a first humidity content of the air in the target space and a third humidity content of the air supplied by the air-conditioning unit.

[0075] In this embodiment, the first humidity content of the air in the target space is obtained by collecting data from a temperature and humidity sensor and processing it through a controller. The third humidity content of the air supplied by the air conditioning unit is obtained by combining the temperature collected by the temperature sensor and the machine dew point temperature and processing it through a controller. Alternatively, the third humidity content is obtained by collecting data from the supply air temperature and humidity sensor and processing it through a controller. The machine dew point refers to the saturation point of the air relative to the average surface temperature of the air conditioning unit's evaporator. When air evaporates, a portion of the air directly contacts the evaporator's heat exchange tubes, reaching saturation and forming dew. However, a considerable portion of the air does not directly contact the cooling source. Although it is cooled through heat exchange, its relative humidity remains around 90-95%. This temperature is called the machine dew point. The machine dew point is related to parameters such as the evaporator's fins and fin spacing.

[0076] In step S41, the temperature and humidity sensor collects the first temperature and humidity of the air in the target space, and obtains the first moisture content and air density that match the first temperature and humidity of the air in the target space by querying in the preset first enthalpy-humidity diagram and / or the first enthalpy-humidity table, and then obtains the air mass G in the target space; the temperature and humidity sensor collects the third temperature and humidity of the air-conditioning unit, and obtains the third moisture content that matches the third temperature and humidity by querying in the preset third enthalpy-humidity diagram and / or the third enthalpy-humidity table.

[0077] Step S42: determining a second humidity content of the fresh air in the air-conditioning unit according to the second temperature and humidity, and calculating a fourth humidity content of the mixed air in the air-conditioning unit according to the first humidity content and the second humidity content.

[0078] In this embodiment, the temperature and humidity sensor collects the second temperature and humidity of the fresh air of the air-conditioning unit, and obtains the second moisture content matching the second temperature and humidity by querying the preset second enthalpy-humidity diagram and / or second enthalpy-humidity table.

[0079] In this embodiment, the fourth moisture content of the mixed air is calculated using the following formula:

[0080] d c =[G X d X +(G S -G X )d n ] / G S ;

[0081] Among them, the mixed air is a mixture of fresh air and return air, d c is the fourth humidity content of the mixed wind, d n is the first moisture content, d X is the second moisture content, G S is the air supply mass flow rate, G X is the fresh air mass flow rate, the supply air mass flow rate G S And the fresh air mass flow G X Both can be obtained through air volume and air density.

[0082] In step S43, the air quality, the third humidity content, the fourth humidity content, the fresh air humidity load, and the air supply volume in the target space are input into the humidity control model to obtain the target dehumidification volume output by the humidity control model. The humidity control model is expressed as:

[0083]

[0084] G Si (d c -d s )=W f AT K BT0;

[0085] Among them, G Si is the air supply mass flow rate at the corresponding opening, d c is the fourth humidity content of the mixed air in the air conditioning unit, d s is the third humidity content of the air supplied by the air conditioning unit, W f is the target dehumidification capacity, AT K is the ambient temperature correction, BT0 is the mixed air temperature correction, K p is the proportional constant, K i is the integration constant, K d is the differential constant, d Tis the target humidity in the target space, G is the air mass in the target space, and the air mass is equal to the volume of the target space multiplied by the air density in the target space. Xi (d X -d T ) is the new humidity load. Ambient temperature correction value AT K The mixed air temperature correction amount BT0 can be pre-set according to the characteristics of the unit product before the unit product leaves the factory, and the target humidity content can be pre-set according to the expected value of passenger comfort.

[0086] In this embodiment, K p , K i and K d Fixed values can be pre-set based on the operating experience of the air-conditioning unit, and can be changed and adjusted based on actual operating data and repeated experimental data.

[0087] The method before step S1 further includes:

[0088] Step S6, performing dehumidification operations using the compressor at different operating frequencies under different ambient temperatures and different mixed air temperatures;

[0089] Step S7, recording the dehumidification amount corresponding to the compressor at different operating frequencies, different ambient temperatures, and different mixed air temperatures;

[0090] Step S8, determining the correspondence between the operating frequency and dehumidification capacity of the compressor at the ambient temperature of the compressor at the first moment and the mixed air temperature at the first moment according to the dehumidification capacity corresponding to each operating frequency at the ambient temperature of the compressor at the first moment and the mixed air temperature at the first moment.

[0091] In this way, by conducting refrigeration and dehumidification tests at different ambient temperatures and different mixed air temperatures, the refrigeration capacity and dehumidification capacity information at different compressor operating frequencies are collected and input into the controller. Once the target dehumidification capacity is calculated, the corresponding compressor operating frequency is found in the controller according to the ambient temperature and mixed air temperature, and the compressor is controlled to operate at this operating frequency.

[0092] The method before step S1 further includes:

[0093] Step S9: Before obtaining the passenger load factor of the target space, the method further includes:

[0094] Step S10, testing the corresponding fresh air volume and supply air volume under different passenger load factors, different fresh air valve openings, and different return air valve openings;

[0095] Step S101, according to the passenger load factor at the first moment, the opening of the fresh air valve at the first moment and the fresh air volume corresponding to the opening of the return air valve at the first moment, determine the relationship between the passenger load factor at the first moment, the opening of the fresh air valve at the first moment and the opening of the return air valve at the first moment and the fresh air volume and the supply air volume, and form an air volume control model.

[0096] Table 1 Air volume control model

[0097]

[0098] Refer to Table 1. Test the fresh air volume and return air volume for the target space at different fresh air valve and return air valve openings. Enter the fresh air volume corresponding to the occupancy rate and the fresh air valve opening into the controller. Simultaneously, enter the supply air volume, which is the result of combining the return air valve opening and the fresh air volume at the corresponding occupancy rate and opening, into the controller. Once the occupancy rate and fresh air valve opening at the first moment are known, the corresponding fresh air volume can be found in the controller. Similarly, once the return air valve opening at the first moment is known, the corresponding supply air volume can be found in the controller.

[0099] In Table 1, Z1, Z2, ..., Z n The setting value is for the passenger load range. The fresh air valve and return air valve will adjust their openings respectively as the passenger load changes.

[0100] See Figure 2 , the method before step S3 includes:

[0101] Step S102, obtaining the fresh air temperature and humidity of the air conditioning unit at a first moment and the fresh air temperature and humidity of the air conditioning unit at a second moment;

[0102] Step S103, determining the fresh air humidity at the first moment based on the fresh air temperature and humidity at the first moment, and determining the fresh air humidity at the second moment based on the fresh air temperature and humidity at the second moment;

[0103] Step S104, determining a fresh air humidity content change value based on the fresh air humidity content at the first moment and the fresh air humidity content at the second moment, and comparing the fresh air humidity content change value with a first preset value;

[0104] Step S105: If the change value of the fresh air humidity content is greater than the first preset value, the fresh air humidity load and the air supply volume are input into a preset humidity control model to obtain the target dehumidification amount output by the humidity control model.

[0105] Fresh air humidity change = |fresh air humidity at the first moment - fresh air humidity at the second moment|. It is understood that if the humidity change in the target space is not significant, the compressor frequency is not adjusted to avoid frequent changes in the compressor frequency.

[0106] See Figure 3The present invention also provides a dehumidification control device for an air-conditioning unit, which is used for controlling the humidity of a target space. The device comprises:

[0107] An acquisition module 10 is used to obtain the passenger load factor of the target space;

[0108] an output module 20 for inputting the passenger load factor into a preset air volume control model to obtain the fresh air volume and supply air volume output by the air volume control model, and for inputting the fresh air humidity load and supply air volume into a preset humidity control model to obtain the target dehumidification amount output by the humidity control model;

[0109] The control module 30 is used to control the compressor to perform dehumidification operation according to the operating frequency corresponding to the target dehumidification amount based on the target dehumidification amount and the preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the dehumidification amount.

[0110] In this embodiment, the acquisition module 10 not only obtains the passenger occupancy rate of the target space, but also obtains the opening of the fresh air valve in the air-conditioning unit, the opening of the return air valve in the air-conditioning unit, and the second temperature and humidity of the fresh air in the air-conditioning unit. In other embodiments, the acquisition module 10 can also be used to obtain the first humidity content of the air in the target space, the third humidity content of the supply air in the air-conditioning unit, and the first temperature and humidity in the target space.

[0111] In this embodiment, the passenger load factor, the fresh air valve opening and the return air valve opening are input into the preset air volume control model. In other embodiments, the output module 20 can also be used to input the third moisture content, the fourth moisture content, the ambient temperature correction value AT K , mixed air temperature correction BT0, proportional constant K p , integration constant K i and the differential constant K d Input into the humidity control model.

[0112] In other embodiments, the control module 30 may further control the compressor to maintain the current operating frequency when the change value of the second humidity content of the fresh air between the first moment and the second moment is less than the first preset value.

[0113] See Figure 4 The present invention further provides an electronic device, which includes a memory 304 and a processor 302, wherein the memory 304 stores a computer program, and the processor 302 is configured to run the computer program to execute the steps in any of the above method embodiments.

[0114] Specifically, the processor 302 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiment of the present invention.

[0115] Among them, the memory 304 may include a large-capacity memory for data or instructions. By way of example and not limitation, the memory 304 may include a hard disk drive (HDD), a floppy disk drive, a solid-state drive (SSD), a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 304 may include a removable or non-removable (or fixed) medium. Where appropriate, the memory 304 may be inside or outside the dehumidification control device of the air-conditioning unit. In a specific embodiment, the memory 304 is a non-volatile memory. In a specific embodiment, the memory 304 includes a read-only memory (ROM) and a random access memory (RAM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically alterable ROM (EAROM) or a flash memory (FLASH), or a combination of two or more of these. Under appropriate circumstances, the RAM can be a static random access memory (SRAM) or a dynamic random access memory (DRAM), where the DRAM can be a fast page mode dynamic random access memory (FPMDRAM), an extended data output dynamic random access memory (EDODRAM), a synchronous dynamic random access memory (SDRAM), etc.

[0116] The memory 304 may be used to store or cache various data files required for processing and / or communication, as well as possible computer program instructions executed by the processor 302 .

[0117] The processor 302 reads and executes the computer program instructions stored in the memory 304 to implement any one of the dehumidification control methods for the air-conditioning unit in the above embodiments.

[0118] Optionally, the electronic device may further include a transmission device 306 and an input / output device 308 , wherein the transmission device 306 is connected to the processor 302 , and the input / output device 308 is connected to the processor 302 .

[0119] Optionally, in this embodiment, the processor 302 may be configured to execute the following steps through a computer program:

[0120] Step 1, obtain the passenger load factor of the target space;

[0121] Step 2: Input the passenger load factor into a preset air volume control model to obtain the fresh air volume and supply air volume output by the air volume control model;

[0122] Step 3: Determine the fresh air humidity load based on the fresh air volume and the preset target humidity content;

[0123] Step 4: Input the new air humidity load and air supply volume into the preset humidity control model to obtain the target dehumidification capacity output by the humidity control model;

[0124] Step 5: Based on the target dehumidification capacity and the preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the dehumidification capacity, control the compressor to perform a dehumidification operation at an operating frequency corresponding to the target dehumidification capacity.

[0125] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be repeated here.

[0126] In addition, in conjunction with the dehumidification control method for an air conditioning unit in the above-mentioned embodiments, embodiments of the present invention may provide a storage medium for implementation. The storage medium stores a computer program; when the computer program is executed by a processor, any of the dehumidification control methods for an air conditioning unit in the above-mentioned embodiments is implemented.

[0127] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be repeated here.

[0128] In addition, in conjunction with the dehumidification control method for an air conditioning unit in the above-mentioned embodiments, embodiments of the present invention may provide a storage medium for implementation. The storage medium stores a computer program; when the computer program is executed by a processor, any of the dehumidification control methods for an air conditioning unit in the above-mentioned embodiments is implemented.

[0129] Those skilled in the art should understand that the technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0130] The above embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A dehumidification control method for an air conditioning unit, used for humidity control of a target space, characterized in that: The method comprises: Obtaining the passenger load factor of the target space; Inputting the passenger load factor into a preset air volume control model to obtain the fresh air volume and supply air volume output by the air volume control model; determining the fresh air humidity load according to the fresh air volume and the preset target humidity content; Inputting the fresh air humidity load and the air supply volume into a preset humidity control model to obtain a target dehumidification volume output by the humidity control model; According to the target dehumidification amount and a preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the dehumidification amount, controlling the compressor to perform a dehumidification operation at an operating frequency corresponding to the target dehumidification amount; Inputting the fresh air humidity load and the air supply volume into a preset humidity control model to obtain the target dehumidification volume output by the humidity control model includes: Obtaining a first humidity content of the air in the target space, a third humidity content of the air supplied by the air conditioning unit, a second temperature and humidity of the fresh air in the air conditioning unit, and the air quality in the target space; determining a second moisture content of the fresh air in the air-conditioning unit according to the second temperature and humidity, and calculating a fourth moisture content of the mixed air in the air-conditioning unit according to the first moisture content and the second moisture content; Inputting the air quality in the target space, the third moisture content, the fourth moisture content, the fresh air humidity load, and the air supply volume into the humidity control model to obtain a target dehumidification amount output by the humidity control model; The humidity control model is expressed as: G Si (d c -d s )=W f AT K BT0; Among them, G Si is the air supply mass flow rate, d c is the fourth moisture content, d s is the third moisture content, d T is the target moisture content, K p is the proportional constant, K i is the integration constant, K d is the differential constant, G is the air quality in the target space, G Xi (d X -d T ) is the new rheumatic load, W f is the target dehumidification capacity, AT K is the ambient temperature correction, BT0 is the mixed air temperature correction, d n is the first moisture content, d X is the second moisture content, G Xi is the fresh air mass flow rate.

2. The dehumidification control method of the air conditioning unit according to claim 1, characterized in that: Obtaining the first humidity of the air in the target space, the third humidity of the air supplied by the air-conditioning unit, and the second temperature and humidity of the fresh air in the air-conditioning unit includes: Acquiring a first temperature and humidity of the air in the target space; querying a preset first psychrometric chart and / or a first psychrometric table to obtain a first moisture content that matches the first temperature and humidity, and querying a preset second psychrometric chart and / or a second psychrometric table to obtain a second moisture content that matches the second temperature and humidity; Obtaining a third temperature and humidity of the air supplied by the air conditioning unit, and querying a preset third psychrometric chart and / or a third psychrometric table to obtain a third moisture content that matches the third temperature and humidity; Alternatively, a third temperature of the supply air in the air-conditioning unit and a machine dew point temperature are obtained, and a third moisture content of the supply air in the air-conditioning unit is determined based on the third temperature and the machine dew point temperature.

3. The dehumidification control method of the air conditioning unit according to claim 1, characterized in that: Inputting the third moisture content, the fourth moisture content, the fresh air wet load, and the air supply volume into the humidity control model to obtain the target dehumidification volume output by the humidity control model includes: Obtain the ambient temperature and the mixed air temperature at the first moment; determining, based on the ambient temperature at the first moment and the mixed air temperature at the first moment, an ambient temperature correction amount corresponding to the ambient temperature at the first moment and a mixed air temperature correction amount corresponding to the mixed air temperature at the first moment; The ambient temperature correction amount, the mixed air temperature correction amount, the third moisture content, the fourth moisture content, the fresh air wet load and the air supply volume are input into the humidity control model to obtain the target dehumidification amount output by the humidity control model.

4. The dehumidification control method of the air conditioning unit according to claim 1, characterized in that: Before obtaining the passenger load factor of the target space, the method further includes: Under different passenger load factors, different fresh air valve openings and different return air valve openings, the corresponding fresh air volume and supply air volume are tested; According to the passenger load factor at the first moment, the fresh air valve opening at the first moment, and the corresponding fresh air volume and supply air volume under the return air valve opening at the first moment, the relationship between the passenger load factor at the first moment, the fresh air valve opening at the first moment, and the return air valve opening at the first moment and the fresh air volume and supply air volume is determined to form the air volume control model.

5. The dehumidification control method of the air conditioning unit according to claim 1, characterized in that: Before obtaining the passenger load factor of the target space, the method further includes: Under different ambient temperatures and different mixed air temperatures, the compressor is used to perform dehumidification operations at different operating frequencies; According to the dehumidification amount corresponding to each operating frequency of the compressor at the ambient temperature of the first moment and the mixed air temperature at the first moment, the correspondence between the operating frequency and dehumidification amount of the compressor at the ambient temperature of the first moment and the mixed air temperature at the first moment is determined.

6. The dehumidification control method of the air conditioning unit according to claim 1, characterized in that: Before inputting the fresh air humidity load and the air supply volume into a preset humidity control model to obtain the target dehumidification volume output by the humidity control model, the method further includes: Obtaining the fresh air humidity of the air conditioning unit at a first moment and the fresh air humidity of the air conditioning unit at a second moment; determining a fresh air humidity content change value according to the fresh air humidity content at the first moment and the fresh air humidity content at the second moment, and comparing the fresh air humidity content change value with a first preset value; If the change in the fresh air moisture content is greater than a first preset value, the fresh air humidity load and the air supply volume are input into a preset humidity control model to obtain a target dehumidification volume output by the humidity control model.

7. A dehumidification control device for an air conditioning unit, characterized in that: The device is configured to execute the dehumidification control method of the air conditioning unit according to any one of claims 1 to 6 to control the humidity of a target space, and the device includes: An acquisition module, configured to acquire the passenger load factor of the target space; an output module, configured to input the passenger load factor into a preset air volume control model to obtain a fresh air volume and a supply air volume output by the air volume control model, determine a fresh air humidity load based on the fresh air volume and a preset target humidity content, and input the fresh air humidity load and the supply air volume into a preset humidity control model to obtain a target dehumidification amount output by the humidity control model; The control module is used to control the compressor to perform dehumidification operation at an operating frequency corresponding to the target dehumidification amount according to the target dehumidification amount and the preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the dehumidification amount.

8. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to execute the dehumidification control method for the air-conditioning unit according to any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the dehumidification control method for the air-conditioning unit according to any one of claims 1 to 6.

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