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

Abstract

The present invention relates to a dehumidification control method, device, electronic device, and storage medium for an air conditioning unit. The method comprises: obtaining a passenger load factor of a target space at a first moment and a passenger load factor at a second moment; determining, based on the passenger load factor at the first moment and the passenger load factor at the second moment, a change in moisture dissipation caused by a change in the passenger load factor at the first moment and the second moment; inputting the change in moisture dissipation at the first moment and the second moment into a preset humidity control model to obtain a target dehumidification amount output by the humidity control model; and controlling the compressor to perform a dehumidification operation at an operating frequency corresponding to the target dehumidification amount based on the target dehumidification amount and a preset correspondence between the operating frequency of a compressor in the air conditioning unit and the target dehumidification amount. The advantages of the present invention are: a prediction can be made before the relative humidity in the target space changes due to a change in the passenger load factor, and the relative humidity in the target space can be controlled in real time to maintain relative humidity stability.

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 places with large flow of people, such as shopping malls, rail transit, and especially subways, the distance between stations is short and doors are opened frequently, resulting in large fluctuations in the heat and humidity load in the car. The current air-conditioning system in rail vehicles relies on start-stop control, step adjustment or fuzzy control. Its control object is relative humidity, and it cannot perform real-time control according to changes in passenger load. When the relative humidity change in the car is detected and adjusted, it has already caused discomfort to the passengers in the car. Summary of the Invention

[0003] The embodiment of the present invention provides a dehumidification control method for an air conditioning unit, and the technical solution is as follows:

[0004] A dehumidification control method for an air conditioning unit is applied to humidity control in a target space, the method comprising:

[0005] Obtaining a passenger load factor of the target space at a first moment and a passenger load factor at a second moment;

[0006] Determining a change in moisture dissipation caused by a change in the passenger load factor between the first moment and the second moment according to the passenger load factor at the first moment and the passenger load factor at the second moment;

[0007] Inputting the moisture dissipation change value into a preset humidity control model to obtain a target dehumidification amount output by the humidity control model;

[0008] According to the target dehumidification amount and a preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the target dehumidification amount, the compressor is controlled to perform a dehumidification operation at the operating frequency corresponding to the target dehumidification amount.

[0009] With this arrangement, when the passenger load factor changes, the compressor is promptly adjusted to the corresponding operating frequency for dehumidification, and adjustments can be made before the relative humidity in the target space changes, thereby controlling the relative humidity in the target space in real time.

[0010] In one embodiment, determining the change in moisture dissipation between the first moment and the second moment according to the passenger load factor at the first moment and the passenger load factor at the second moment includes:

[0011] Obtaining the temperature of the target space at a first moment;

[0012] determining the latent heat dissipation of the person at the first moment according to the temperature at the first moment;

[0013] Input the latent heat dissipation of personnel at the first moment, the passenger load factor at the first moment, and the passenger load factor at the second moment into the formula ΔQ=Q(t n )×(Z n -Z n-1 ), calculating the change in latent heat dissipation between the first moment and the second moment;

[0014] Among them, Q(t n ) is the personnel latent heat dissipation at the first moment, Z n is the passenger load factor at the first moment, Z n-1 is the passenger load factor at the second moment, ΔQ is the change in latent heat dissipation between the first moment and the second moment;

[0015] The change values ​​of the moisture dissipation at the first moment and the second moment are determined according to the change values ​​of the latent heat dissipation at the first moment and the second moment.

[0016] In this way, the change in moisture dissipation at the first moment and the second moment can be calculated.

[0017] In one embodiment, determining a change in moisture dissipation caused by the passenger load factor at the first moment and the second moment based on the passenger load factor at the first moment and the passenger load factor at the second moment, inputting the change in moisture dissipation at the first moment and the second moment into a preset humidity control model, and obtaining a target dehumidification amount output by the humidity control model includes:

[0018] Obtaining a first humidity content in the target space at a first moment, a second humidity content of fresh air in the air-conditioning unit at a first moment, a third humidity content of supply air in the air-conditioning unit at a first moment, and the air quality in the target space;

[0019] 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;

[0020] inputting the air quality in the target space, the third moisture content, and the fourth moisture content into the humidity control model to obtain a target dehumidification amount output by the humidity control model;

[0021] The humidity control model includes:

[0022]

[0023] G S ×(d c -d s )+ΔW=W f ×AT K ×BT0;

[0024] Among them, K p is the proportional constant, Ki is the integration constant, K d is the differential constant, d T is the target moisture content in the target space, d n is the first humidity content, G is the air quality in the target space, G S is the air supply mass flow rate, d c is the fourth moisture content, d s is the third moisture content, ΔW is the change in moisture dissipation, W f is the target dehumidification capacity, AT K is the ambient temperature correction, and BT0 is the mixed air temperature correction.

[0025] In one embodiment, inputting the third moisture content and the fourth moisture content into the humidity control model to obtain the target dehumidification amount 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 and the mixed air temperature, an ambient temperature correction amount corresponding to the ambient temperature and a mixed air temperature correction amount corresponding to the mixed air temperature;

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

[0029] In one embodiment, obtaining a first humidity content in the target space at a first moment, a second humidity content of fresh air in the air-conditioning unit at a first moment, and a third humidity content of supply air in the air-conditioning unit at a first moment includes:

[0030] Obtaining a first temperature and humidity in the target space at a first moment and a second temperature and humidity of fresh air in the air-conditioning unit at a first moment;

[0031] Obtaining a first moisture content matching the first temperature and humidity by querying a preset first psychrometric chart and / or a first psychrometric table, and obtaining a second moisture content matching the second temperature and humidity by querying a preset second psychrometric chart and / or a second psychrometric table;

[0032] A third humidity content of the supply air in the air-conditioning unit at a first moment is obtained.

[0033] In one embodiment, before obtaining the passenger load factor of the target space at the first moment and the passenger load factor at the second moment, 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] Record the dehumidification capacity of the compressor at different operating frequencies, different ambient temperatures, and different mixed air temperatures;

[0036] 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.

[0037] With such a configuration, the operating frequency of the compressor corresponding to the required target dehumidification amount can be found in the controller, thereby adjusting the operating frequency of the compressor.

[0038] In one embodiment, after determining the moisture dissipation change value between the first moment and the second moment based on the passenger load factor at the first moment and the passenger load factor at the second moment, and inputting the moisture dissipation change value into a preset humidity control model, and before obtaining the target dehumidification amount output by the humidity control model, the method further includes:

[0039] Comparing the moisture dissipation change value with a first preset value;

[0040] Determining whether the change in moisture dissipation is greater than a first preset value;

[0041] If so, the moisture dissipation change value is input into a preset humidity control model.

[0042] With this arrangement, when the amount of moisture dissipation does not change much, the frequency of the compressor is not adjusted, so as to avoid frequent changes in the frequency of the compressor.

[0043] The present invention also provides the following technical solutions:

[0044] A dehumidification control device for an air conditioning unit, used for controlling the humidity in a target space, comprising:

[0045] an acquisition module, configured to acquire the passenger load factor of the target space at a first moment and the passenger load factor at a second moment;

[0046] an output module, configured to input the passenger load factor at the first moment and the passenger load factor at the second moment into a preset humidity control model to obtain a target dehumidification amount output by the humidity control model;

[0047] 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.

[0048] The present invention also provides the following technical solutions:

[0049] An electronic device includes a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the above-mentioned dehumidification control method for an air-conditioning unit.

[0050] The present invention also provides the following technical solutions:

[0051] 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.

[0052] Compared to the prior art, the dehumidification control method for an air conditioning unit provided by the present invention obtains the occupancy rate of a target space at a first moment and a second moment, inputs the occupancy rate at the first moment and the second moment into a preset humidity control model, and obtains a target dehumidification rate output by the humidity control model. Finally, based on the target dehumidification rate and a preset correspondence between the operating frequency of the compressor in the air conditioning unit and the dehumidification rate, the compressor is controlled to perform a dehumidification operation at an operating frequency corresponding to the target dehumidification rate. This method can predict changes in the relative humidity in the target space due to changes in the occupancy rate before they occur, and can control the relative humidity of the target space in real time to maintain a stable relative humidity within the target space.

[0053] 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

[0054] 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:

[0055] Figure 1 is a flow chart of a dehumidification control method for an air-conditioning unit provided by the present invention;

[0056] Figure 2 This is a structural block diagram of a dehumidification control device for an air-conditioning unit provided by the present invention;

[0057] Figure 3 It is a schematic structural diagram of an electronic device provided according to the present invention.

[0058] The symbols in the figure mean the following:

[0059] 10. Acquisition module; 20. Output module; 30. Control module; 302. Processor; 304. Memory; 306. Transmission device; 308. Input and output device. DETAILED DESCRIPTION

[0060] 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.

[0061] 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.

[0062] 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.

[0063] See Figure 1The present invention provides a dehumidification control method for an air conditioning unit, which is used to control the humidity of a target space. The target space can be a place with a large flow of people, such as rail transit, shopping malls, etc. Rail transit can be traditional railways, subways, light rails, and trams. The following takes a rail vehicle as an example, and the method includes:

[0064] Step S1, obtaining the passenger load factor of the target space at the first moment and the passenger load factor at the second moment.

[0065] In this embodiment, the vehicle network sends the passenger load factor signal every first preset time, and the first preset time is adjustable.

[0066] Step S2: determining the moisture dissipation change value ΔW caused by the change in passenger load factor at the first moment and the second moment according to the passenger load factor at the first moment and the passenger load factor at the second moment.

[0067] In this embodiment, the moisture dissipation change value ΔW is determined by the latent heat dissipation change value ΔQ.

[0068] Step S3: input the moisture dissipation change value into a preset humidity control model to obtain a target dehumidification amount output by the humidity control model.

[0069] Step S4, according to the target dehumidification capacity and the preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the target dehumidification capacity, controlling the compressor to perform a dehumidification operation at the operating frequency corresponding to the target dehumidification capacity.

[0070] In this way, when the passenger load factor changes, by adjusting the compressor to the corresponding operating frequency for dehumidification, changes in the relative humidity in the vehicle cabin can be predicted and adjusted in advance, thereby controlling the relative humidity in the vehicle cabin in real time, ensuring stable humidity and passenger comfort. In this embodiment, the first moment is the current time. If the vehicle network transmits passenger load factor information every hour, the second moment is one hour ago.

[0071] In step S2, determining the moisture dissipation change value ΔW according to the passenger load factor at the first moment and the passenger load factor at the second moment includes:

[0072] Step S21, obtaining the temperature inside the rail vehicle compartment at the first moment;

[0073] Step S22: determining the latent heat dissipation of the personnel at the first moment according to the temperature at the first moment.

[0074] In this embodiment, according to the temperature at the first moment, Appendix D of the UIC553 standard is queried to obtain the latent heat dissipation of the personnel at the first moment.

[0075] Step S23: Input the latent heat dissipation of the personnel at the first moment, the passenger load factor at the first moment, and the passenger load factor at the second moment into the formula ΔQ=Q(t n )×(Z n -Z n-1 ), calculating the change in latent heat dissipation between the first moment and the second moment;

[0076] Among them, Q(t n ) is the personnel latent heat dissipation at the first moment, Z n is the passenger load factor at the first moment, Z n-1 is the passenger load factor at the second moment, and ΔQ is the change in latent heat dissipation between the first moment and the second moment.

[0077] Step S24, determining the change value of the moisture dissipation according to the change value of the latent heat dissipation.

[0078] In this embodiment, the change in moisture dissipation is calculated by: ΔW (kg / h) = ΔQ (kW) × 3600 ÷ 2500.

[0079] In step S3, the moisture dissipation change value is input into a preset humidity control model, and the target dehumidification amount output by the humidity control model is obtained, including:

[0080] Step S31, obtaining a first humidity content in a rail vehicle compartment at a first moment, a second humidity content of fresh air in the air conditioning unit at a first moment, a third humidity content of air supplied in the air conditioning unit at a first moment, and the air quality in the vehicle compartment.

[0081] In this embodiment, the first moisture content in the vehicle compartment is obtained by collecting data through the temperature and humidity sensor and processing it through the controller, the second moisture content of the fresh air in the air-conditioning unit is obtained by collecting data through the temperature and humidity sensor and processing it through the controller, the air quality in the vehicle compartment is determined by the volume of the vehicle compartment and the air temperature (air density) in the vehicle compartment, the third moisture content of the supply air in the air-conditioning unit is obtained by the temperature collected by the temperature sensor and the machine dew point temperature and processing it through the controller, or the third moisture content is obtained by collecting data by the supply air temperature and humidity sensor and processing it through the controller.

[0082] The machine dew point refers to the point at which the air reaches saturation relative to the average surface temperature of the air conditioner's evaporator. When the air evaporates, a portion of the air directly contacts the evaporator's heat exchange tubes, reaching saturation and forming dew. However, a significant portion of the air does not directly contact the cooling source. Although it is cooled by 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.

[0083] In step S31, the temperature and humidity sensor collects the first temperature and humidity in the vehicle compartment, and obtains the first humidity and air density that match the first temperature and humidity in the rail compartment by querying in a preset first enthalpy-humidity diagram and / or a first enthalpy-humidity table, thereby obtaining the air mass G in the compartment; the temperature and humidity sensor collects the second temperature and humidity of the air-conditioning unit, and obtains the second humidity that matches the second temperature and humidity by querying in a preset second enthalpy-humidity diagram and / or a second enthalpy-humidity table; the temperature and humidity sensor collects the third temperature and humidity of the air-conditioning unit, and obtains the third humidity that matches the third temperature and humidity by querying in a preset third enthalpy-humidity diagram and / or a third enthalpy-humidity table.

[0084] Step S32: Calculate the fourth humidity content of the mixed air in the air-conditioning unit according to the first humidity content and the second humidity content.

[0085] In this embodiment, the fourth moisture content of the mixed air is calculated using the following formula:

[0086] d c =[G X d X +(G S -G X )d n ] / G S ;

[0087] 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 flow rate and air density.

[0088] Step S33: Input the third moisture content, the fourth moisture content, and the moisture dissipation change value into the humidity control model to obtain the target dehumidification amount output by the humidity control model. The humidity control model includes:

[0089]

[0090] G S ×(d c -d s )+ΔW=W f ×AT K ×BT0;

[0091] Among them, K p is the proportional constant, K i is the integration constant, K dis the differential constant, d T is the target humidity in the vehicle cabin, which is preset based on the expected value of passenger comfort. G is the air quality in the vehicle cabin, which is equal to the internal volume of the vehicle cabin multiplied by the air density in the vehicle cabin. Since the temperature, humidity and air density in the vehicle cabin change in real time, the air quality G changes in real time. S is the air supply mass flow rate, 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, ΔW is the change in humidity caused by the difference in passenger load factor between the first moment and the second moment, W f is the target dehumidification capacity, AT k is the ambient temperature correction, BT0 is the mixed air temperature correction, and the ambient temperature correction 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.

[0092] 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.

[0093] In step S33, G S The air supply mass flow rate is calculated using the following formula:

[0094] G S =G x +G h ;

[0095] Among them, G h is the return air mass flow rate, return air mass flow rate G h It can be determined by the return air volume flow rate and return air density.

[0096] The method before step S1 further includes:

[0097] Step S5, performing dehumidification operations using the compressor at different operating frequencies under different ambient temperatures and different mixed air temperatures;

[0098] Step S6, recording the dehumidification amount corresponding to the compressor at different operating frequencies, different ambient temperatures, and different mixed air temperatures;

[0099] Step S7, 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.

[0100] In this way, once the target dehumidification capacity is calculated, the corresponding operating frequency of the compressor is found in the controller according to the ambient temperature and the mixed air temperature, and the compressor is controlled to operate at this operating frequency.

[0101] The method after step S2 and before step S3 includes:

[0102] Comparing the moisture dissipation change value with a first preset value;

[0103] Determining whether the change in moisture dissipation is greater than a first preset value;

[0104] If so, the moisture dissipation change value is input into the preset humidity control model;

[0105] If not, the compressor maintains the current operating frequency.

[0106] See Figure 2 The present invention also provides a dehumidification control device for an air-conditioning unit, which is applied to humidity control in a railway vehicle compartment.

[0107] The device comprises: an acquisition module 10 for obtaining the passenger load factor of the rail vehicle carriage at a first moment and the passenger load factor at a second moment;

[0108] An output module 20 is used to input the moisture dissipation change value at the first moment and the second moment into a preset humidity control model to obtain a target dehumidification amount output by the humidity control model;

[0109] The control module 30 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.

[0110] In other embodiments, the acquisition module 10 may also be used to acquire a first humidity content in a rail vehicle compartment, a second humidity content of fresh air in an air-conditioning unit, and a third humidity content of supply air in the air-conditioning unit.

[0111] In other embodiments, the output module 20 may also be used to input the third moisture content and the fourth moisture content 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 in moisture dissipation between the first moment and the second moment is less than a first preset value.

[0113] See Figure 3 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 at the first moment and the passenger load factor at the second moment in the rail vehicle compartment;

[0121] Step 2: determining a moisture dissipation change value ΔW between the first moment and the second moment according to the passenger load factor at the first moment and the passenger load factor at the second moment;

[0122] Step 3: Input the moisture dissipation change value into a preset humidity control model to obtain the target dehumidification amount output by the humidity control model;

[0123] Step 4: Based on the target dehumidification capacity and the preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the target dehumidification capacity, control the compressor to perform a dehumidification operation at the operating frequency corresponding to the target dehumidification capacity.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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 a passenger load factor of the target space at a first moment and a passenger load factor at a second moment; Determining, based on the passenger load factor at the first moment and the passenger load factor at the second moment, a change in moisture dissipation caused by the change in passenger load factor at the first moment and the second moment; Inputting the moisture dissipation change value into a preset humidity control model to obtain a target dehumidification amount 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 target dehumidification amount, controlling the compressor to perform a dehumidification operation at an operating frequency corresponding to the target dehumidification amount; Determining the moisture dissipation change value between the first moment and the second moment according to the passenger load factor at the first moment and the passenger load factor at the second moment includes: Obtaining the temperature of the target space at a first moment; determining the latent heat dissipation of the person at the first moment according to the temperature at the first moment; Input the latent heat dissipation of personnel at the first moment, the passenger load factor at the first moment, and the passenger load factor at the second moment into the formula ΔQ=Q(t n )×(Z n -Z n-1 ), calculating the change in latent heat dissipation between the first moment and the second moment; Among them, Q(t n ) is the personnel latent heat dissipation at the first moment, Z n is the passenger load factor at the first moment, Z n-1 is the passenger load factor at the second moment, ΔQ is the change in latent heat dissipation between the first moment and the second moment; The change values ​​of the moisture dissipation at the first moment and the second moment are determined according to the change values ​​of the latent heat dissipation at the first moment and the second moment.

2. The dehumidification control method of the air conditioning unit according to claim 1, characterized in that: Inputting the moisture dissipation change value into a preset humidity control model to obtain a target dehumidification amount output by the humidity control model includes: Obtaining a first humidity content in the target space at a first moment, a second humidity content of fresh air in the air-conditioning unit at a first moment, a third humidity content of supply air in the air-conditioning unit at a first moment, and the air quality in the target space; 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, and the fourth moisture content into the humidity control model to obtain a target dehumidification amount output by the humidity control model; The humidity control model includes: G S ×(d c -d s )+ΔW=W f ×AT K ×BT0; Among them, K p is the proportional constant, K i is the integration constant, K d is the differential constant, d T is the target moisture content in the target space, d n is the first humidity content, G is the air quality in the target space, G S is the air supply mass flow rate, d c is the fourth moisture content, d s is the third moisture content, ΔW is the change in moisture dissipation, W f is the target dehumidification capacity, AT K is the ambient temperature correction, and BT0 is the mixed air temperature correction.

3. The dehumidification control method of the air conditioning unit according to claim 2, characterized in that: Inputting the third moisture content and the fourth moisture content into the humidity control model to obtain the target dehumidification amount 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 and the mixed air temperature, an ambient temperature correction amount corresponding to the ambient temperature and a mixed air temperature correction amount corresponding to the mixed air temperature; The ambient temperature correction amount, the mixed air temperature correction amount, the third moisture content, the fourth moisture content and the moisture dissipation change value 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 2, characterized in that: Obtaining a first humidity content in the target space at a first moment, a second humidity content of fresh air in the air-conditioning unit at a first moment, and a third humidity content of supply air in the air-conditioning unit at a first moment includes: Obtaining a first temperature and humidity in the target space at a first moment and a second temperature and humidity of fresh air in the air-conditioning unit at a first moment; Obtaining a first moisture content matching the first temperature and humidity by querying a preset first psychrometric chart and / or a first psychrometric table, and obtaining a second moisture content matching the second temperature and humidity by querying a preset second psychrometric chart and / or a second psychrometric table; A third humidity content of the supply air in the air-conditioning unit at a first moment is obtained.

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 at the first moment and the passenger load factor at the second moment, 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; Record the dehumidification capacity of the compressor at different operating frequencies, different ambient temperatures, and different mixed air temperatures; 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: After determining the moisture dissipation change value between the first moment and the second moment based on the passenger load factor at the first moment and the passenger load factor at the second moment, and inputting the moisture dissipation change value into a preset humidity control model, and before obtaining the target dehumidification amount output by the humidity control model, the method further includes: Comparing the moisture dissipation change value with a first preset value; Determining whether the change in moisture dissipation is greater than a first preset value; If so, the moisture dissipation change value is input into a preset humidity control model.

7. A dehumidification control device for an air conditioning unit, used for controlling the humidity in a target space, characterized in that: The device comprises: an acquisition module, configured to acquire the passenger load factor of the target space at a first moment and the passenger load factor at a second moment; an output module, configured to input the passenger load factor at the first moment and the passenger load factor at the second moment into a preset humidity control model to obtain a target dehumidification amount output by the humidity control model; a control module, configured to control the compressor to perform a dehumidification operation at an operating frequency corresponding to the target dehumidification amount based on the target dehumidification amount and a preset correspondence between the operating frequency of the compressor in the air-conditioning unit and the dehumidification amount; Determining the moisture dissipation change value between the first moment and the second moment according to the passenger load factor at the first moment and the passenger load factor at the second moment includes: Obtaining the temperature of the target space at a first moment; determining the latent heat dissipation of the person at the first moment according to the temperature at the first moment; Input the latent heat dissipation of personnel at the first moment, the passenger load factor at the first moment, and the passenger load factor at the second moment into the formula ΔQ=Q(t n )×(Z n -Z n-1 ), calculating the change in latent heat dissipation between the first moment and the second moment; Among them, Q(t n ) is the personnel latent heat dissipation at the first moment, Z n is the passenger load factor at the first moment, Z n-1 is the passenger load factor at the second moment, ΔQ is the change in latent heat dissipation between the first moment and the second moment; The change values ​​of the moisture dissipation at the first moment and the second moment are determined according to the change values ​​of the latent heat dissipation at the first moment and the second moment.

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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