CN113959110B - Refrigeration system and dehumidification control method - Google Patents

Refrigeration system and dehumidification control method Download PDF

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CN113959110B
CN113959110B CN202111162572.6A CN202111162572A CN113959110B CN 113959110 B CN113959110 B CN 113959110B CN 202111162572 A CN202111162572 A CN 202111162572A CN 113959110 B CN113959110 B CN 113959110B
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temperature
indoor
setting
humidity
throttle valve
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CN113959110A (en
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梁之琦
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0083—Indoor units, e.g. fan coil units with dehumidification means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention belongs to the field of air conditioners, and particularly relates to a refrigeration system and a dehumidification control method, wherein the refrigeration system comprises an outdoor heat exchanger, a compressor, an indoor heat exchanger and a first throttling valve; the indoor heat exchanger comprises a first heat exchanging part and a second heat exchanging part, a first throttle valve is positioned between the first end of the first heat exchanging part and the first end of the outdoor heat exchanger, a second throttle valve is arranged between the second end of the first heat exchanging part and the first end of the second heat exchanging part, the second end of the second heat exchanging part is connected with a suction port of the compressor, and an exhaust port of the compressor is connected with the second end of the outdoor heat exchanger. The refrigerating system further comprises a control module, and the control module adjusts the opening degree of the first throttle valve and/or the second throttle valve by calculating the sensible heat and latent heat required by temperature and humidity control of the indoor heat exchanger in a cooling dehumidification mode and a constant temperature dehumidification mode. The refrigeration system and the dehumidification control method can realize accurate adjustment of air temperature and humidity.

Description

Refrigerating system and dehumidification control method
Technical Field
The invention belongs to the field of air conditioners, and particularly relates to a refrigeration system and a dehumidification control method.
Background
With the improvement of living standard, the air conditioner has become a necessity in the life of people, and the comfort is one of the more concerned aspects of users. At present, the room comfort is realized by the air conditioner in the industry mainly through temperature control, but the air humidity is also an important comfort index. The existing refrigeration and dehumidification technology can remove part of moisture in air in the cooling process, but the air temperature and humidity are difficult to be decoupled and controlled independently, so that the air temperature and humidity cannot be accurately regulated simultaneously by the conventional refrigeration mode control
The present invention has been made in view of this point.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a refrigeration system and a dehumidification control method capable of realizing accurate adjustment of air temperature and humidity.
In order to solve the technical problem, the invention provides a refrigeration system, which comprises an outdoor heat exchanger, a compressor, an indoor heat exchanger and a first throttle valve; the indoor heat exchanger comprises a first heat exchanging part and a second heat exchanging part, the first throttling valve is positioned between the first end of the first heat exchanging part and the first end of the outdoor heat exchanger, the second throttling valve is arranged between the second end of the first heat exchanging part and the first end of the second heat exchanging part, the second end of the second heat exchanging part is connected with the air suction port of the compressor, and the air exhaust port of the compressor is connected with the second end of the outdoor heat exchanger;
the refrigerating system also comprises a control module, and in the refrigerating operation process of the air conditioner, when the indoor working condition reaches a first temperature condition, the air conditioner enters a cooling and dehumidifying mode; when the indoor working condition reaches a second temperature condition, the air conditioner enters a constant temperature dehumidification mode; the control module adjusts the opening degree of the first throttle valve and/or the second throttle valve by calculating the sensible heat latent heat required by temperature and humidity control of the indoor heat exchanger in the cooling dehumidification mode and the constant-temperature dehumidification mode.
Further optionally, the refrigeration system is a heat pump refrigeration system, and the refrigeration system includes a four-way reversing valve, and the four-way reversing valve is connected between the second end of the second heat exchanging portion, the second end of the outdoor heat exchanger, and the air suction port and the air discharge port of the compressor.
The invention also provides a dehumidification control method of the refrigeration system, which comprises the following steps:
in the process of refrigerating operation of the air conditioner, when the indoor working condition reaches a first temperature condition, the air conditioner enters a cooling and dehumidifying mode; when the indoor working condition reaches a second temperature condition, the air conditioner enters a constant temperature dehumidification mode;
in the cooling dehumidification mode and the constant-temperature dehumidification mode, the opening degree of the first throttle valve and/or the second throttle valve is/are adjusted by calculating the sensible heat latent heat required by temperature and humidity control of the indoor heat exchanger.
Further optionally, when the indoor operating condition reaches the first temperature condition, the air conditioner enters a cooling and dehumidifying mode, including
Obtaining the current indoor temperature and calculating the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upΔ T, Δ T = TInner ring-TSetting up(ii) a And when the temperature difference is more than the first set temperature difference, entering a cooling and dehumidifying mode.
Further optionally, when the indoor operating condition reaches the second temperature condition, the air conditioner enters a constant temperature dehumidification mode, including
Obtaining the current indoor temperature, and calculating the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upΔ T, Δ T = TInner ring-TSetting up(ii) a And when the second set temperature difference is less than or equal to delta T and less than or equal to the first set temperature difference, entering a constant temperature dehumidification mode.
Further optionally, the adjusting the opening degree of the first throttle valve and/or the second throttle valve by calculating the amount of latent heat of sensible heat required by the indoor heat exchanger for temperature and humidity control comprises:
according to the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upTemperature difference Δ T, current indoor humidity DInner ringAnd setting the indoor humidity DSetting upCalculating the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger according to the humidity difference delta D;
taking the calculated sensible heat latent heat as an input end of a neural network prediction model, and outputting a control strategy of the first throttle valve and/or the second throttle valve at an output end of the neural network prediction model;
controlling the opening of the first throttle valve and/or the second throttle valve is adjusted according to the control strategy.
Further optionally, the controlling the opening of the first throttle valve and/or the second throttle valve to adjust according to the control strategy comprises:
in the cooling and dehumidifying mode, the opening degree P of the first throttle valve is controlled1＜P1,MAXControlling the opening degree P of the second throttle valve2＝P2,MAX(ii) a In the constant temperature dehumidification mode, the opening degree P of the second throttle valve is controlled2＜P2,MAXControlling the opening degree P of the first throttle valve1＝P1,MAX，P1,MAXIs the maximum opening of the first throttle valve, P2,MAXIs the maximum opening degree of the second throttle valve.
Further optionally, in the cooling and dehumidifying mode, the sensible heat and latent heat required for temperature and humidity control of the indoor heat exchanger includes sensible heat output Qc,sAnd latent heat output Qc,LAccording to the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upTemperature difference Δ T, current indoor humidity DInner ringAnd setting the indoor humidity DSetting upCalculating the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger by the humidity difference delta D, including
Obtaining the current indoor temperature T every other a first set time nInner ringAnd the current humidity DInner ringAnd respectively calculating delta T (n) and delta D (n), wherein the delta T (n) is the current indoor temperature T acquired every first set time nInner ringAnd setting the indoor temperature TSetting upΔ D (n) is the current indoor humidity D obtained every first set time nInner ringAnd setting the indoor humidity DSetting upAnd satisfies the following conditions:
Qc,s＝m·[Ka·ΔT(n)+Kb·∫ΔT(n)·T+Kc·(ΔT(n)-ΔT(n-1))]+l；
Qc,L＝n·[Kd·ΔD(n)+Ke·∫ΔD(n)·T+Kf·(ΔD(n)-ΔD(n-1))]+p。
further optionally, the calculating the latent heat of sensible heat magnitude as an input of a neural network prediction model, and outputting a control strategy of the first throttle valve and/or the second throttle valve at an output of the neural network prediction model, includes
Output sensible heat Qc,sAnd latent heat output Qc,LAnd as the input end of the neural network prediction model, outputting the control strategy of the first throttle valve at the output end of the neural network prediction model.
Further optionally, in the constant-temperature dehumidification mode, the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger includes sensible heat output Qc,s-QhLatent heat output Qc,LWherein Q ishFor the output of the heating sensible heat of the first heat exchanging part, Qc,sFor the output of the sensible heat of the second heat exchanging part, Qc,LOutputting the latent heat of refrigeration of the second heat exchanging part; according to the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upTemperature difference Δ T, current indoor humidity DInner ringAnd setting the indoor humidity DSetting upCalculating the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger by the humidity difference delta D, including
Acquiring the current indoor temperature T every second set time NInner ringAnd the current humidity DInner ringAnd respectively calculating delta T (N) and delta D (N), wherein the delta T (N) is the current indoor temperature T acquired every second set time NInner ringAnd setting the indoor temperature TSetting upΔ D (N) is the current indoor humidity D obtained every second set time NInner ringAnd setting the indoor humidity DSetting upAnd satisfies the following conditions:
Qc,s-Qh＝m’·[Ka’·ΔT(N)+Kb’·∫ΔT(N)·T+Kc’·(ΔT(N)-ΔT(N-1))]+l’，
Qc,L＝n’·[Kd’·ΔD(N)+Ke’·∫ΔD(N)·T+Kf’·(ΔD(N)-ΔD(N-1))]+p’。
further optionally, the calculating the latent heat of sensible heat magnitude as an input end of a neural network prediction model, and outputting a control strategy of the first throttle valve and the second throttle valve at an output end of the neural network prediction model includes
Output sensible heatQc,s-QhAnd latent heat output Qc,LAnd as the input end of the neural network prediction model, outputting the control strategy of the second throttle valve at the output end of the neural network prediction model.
Further optionally, every second set time N is an adjustment period.
Further optionally, the sensible heat output Q of the air conditioner during the first adjustment cycle of entering the constant temperature dehumidification modec,s-QhCalculating value Q according to sensible heat of last adjustment period in exiting cooling and dehumidifying processc,sAnd (7) assigning values.
Further optionally, the output end of the neural network prediction model further outputs a control strategy of the operation frequency of the compressor, the rotating speed of the inner fan and the rotating speed of the outer fan, and the air conditioner controls the compressor, the inner fan and the outer fan to operate according to the control strategy output by the neural network prediction model.
Further optionally, when the neural network prediction mode outputs multiple sets of control strategies, a control strategy with the lowest compressor operation frequency is selected from the multiple sets of control strategies to control the air conditioner.
The invention also proposes a control device comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions which, when executed by the one or more processors, are adapted to implement the method of any one of the above.
The invention also proposes a non-transitory computer-readable storage medium having stored thereon program instructions for implementing any of the methods described above when the program instructions are executed by one or more processors.
The invention also provides an air conditioner which adopts any one refrigerating system or adopts any one method or comprises the control device or is provided with the non-transitory computer readable storage medium.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
according to the invention, the sensible heat and latent heat capacities required by temperature and humidity control are respectively calculated, so that the temperature and the humidity of the actual environment can be accurately adjusted; meanwhile, the strategy mainly comprises cooling dehumidification and constant temperature dehumidification modes and is combined with an artificial neural network prediction algorithm, so that on one hand, the rapid temperature control and accurate humidity control of the system are facilitated, and the comfort of a user is improved; on the other hand, the system can operate efficiently and energy-saving under different working conditions by predicting and selecting the optimal control strategy.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1: is a structure diagram of a refrigeration system of the embodiment of the invention;
FIG. 2: a diagram of a neural system prediction model according to an embodiment of the present invention;
FIG. 3: is a diagram of one embodiment of the present invention;
wherein: 1. an indoor heat exchanger; 11-a first heat exchanging part; 12-a second heat exchanging part; 2. an outdoor heat exchanger; 3. a compressor; a 4-four-way reversing valve; 5-a first throttle valve; 6-second throttle valve.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Because the existing refrigeration and dehumidification technology can remove part of moisture in the air in the cooling process, but the air temperature and humidity are difficult to be decoupled and controlled independently, so that the air temperature and humidity cannot be accurately regulated simultaneously by the conventional refrigeration mode control. The embodiment provides a refrigeration system capable of accurately adjusting air temperature and humidity, and as shown in fig. 1, the refrigeration system comprises an outdoor heat exchanger, a compressor, an indoor heat exchanger and a first throttle valve; the indoor heat exchanger comprises a first heat exchange part and a second heat exchange part, a first throttle valve is positioned between the first end of the first heat exchange part and the first end of the outdoor heat exchanger, a second throttle valve is arranged between the second end of the first heat exchange part and the first end of the second heat exchange part, the second end of the second heat exchange part is connected with a suction port of the compressor, and an exhaust port of the compressor is connected with the second end of the outdoor heat exchanger;
this embodiment is through increasing a second choke valve to the indoor set to carry out reasonable control to first choke valve and second choke valve and can realize that the air conditioner is to the accurate control of room humidity. Generally, the situation of high humidity occurs in summer weather in the south, so the control function is mainly used in a summer cooling mode. When the system is started to operate, the room needs to be cooled and dehumidified due to high initial temperature and humidity. At this time, the second throttle valve is almost fully opened, and the first throttle valve is appropriately closed. The system is in a full-refrigeration cooling and dehumidifying mode, and the refrigerant after heat release of the outdoor unitThrough the throttling function of the first throttling valve with a certain valve opening degree, all the indoor heat exchangers are low-temperature low-pressure liquid refrigerants, and the cooling and dehumidifying regulation process of the system can be realized. The output cold quantity of the heat exchanger of the indoor unit comprises refrigeration cooling sensible heat Qc,sAnd latent heat of dehumidification Qc,L. When the indoor temperature approaches the set temperature of the user, the room needs to be subjected to constant temperature and humidity conditioning. In this time period, the first throttle valve is almost fully opened and the second throttle valve is properly closed. At the moment, the high-temperature and high-pressure refrigerant passes through the first heat exchanging part and then passes through the first throttling valve almost without throttling action, so that the second throttling valve of the indoor heat exchanger still has a heat releasing process, namely the first heat exchanging part is a reheating section. The second throttle valve has a certain throttling function, and at the moment, the high-temperature and high-pressure refrigerant flows through the second throttle valve for throttling, and then the low-temperature and low-pressure refrigerant flows through the second heat exchange part for refrigerating and dehumidifying, namely, the second heat exchange part is a refrigerating and dehumidifying section. Sensible heat Q by reheat sectionhTo eliminate sensible heat Q of wet sectionc,sWhile latent heat of dehumidification section Qc,LAnd carrying out dehumidification regulation, thereby realizing the constant-temperature dehumidification regulation process of the air conditioning system.
Further optionally, the refrigeration system is a heat pump refrigeration system, and the refrigeration system includes a four-way reversing valve, and the four-way reversing valve is connected between the second end of the second heat exchanging portion, the second end of the outdoor heat exchanger, and the air suction port and the air discharge port of the compressor. The refrigerating system of the embodiment can be used for refrigerating the indoor space and heating the indoor space through the four-way reversing valve.
The embodiment also provides a dehumidification control method of the refrigeration system, which comprises the following steps:
in the process of refrigerating operation of the air conditioner, when the indoor working condition reaches a first temperature condition, the air conditioner enters a cooling and dehumidifying mode; when the indoor working condition reaches a second temperature condition, the air conditioner enters a constant temperature dehumidification mode;
in the cooling dehumidification mode and the constant-temperature dehumidification mode, the opening degree of the first throttle valve and/or the second throttle valve is/are adjusted by calculating the sensible heat latent heat required by temperature and humidity control of the indoor heat exchanger.
The dehumidification control mode of this embodiment contains two modes of cooling dehumidification and constant temperature humidifying, can realize the quick accuse temperature in earlier stage of system operation and the accurate humidifying control in later stage through the dynamic adjustment to first choke valve and second choke valve under the dehumidification mode of difference, improves user's travelling comfort.
Further optionally, the air conditioner enters a cooling dehumidification mode when the indoor conditions reach the first temperature condition, including
Obtaining the current indoor temperature and calculating the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upΔ T, Δ T = TInner ring-TSetting up(ii) a When the temperature difference delta T is larger than the first set temperature difference, the room needs to be cooled and dehumidified due to the fact that the initial temperature and humidity are high, the indoor heat exchanger carries out full-refrigeration cooling and dehumidification, and the room enters a cooling and dehumidification mode.
Further optionally, the air conditioner enters a constant temperature dehumidification mode when the indoor conditions reach the second temperature condition, including
Obtaining the current indoor temperature, and calculating the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upΔ T, Δ T = TInner ring-TSetting up(ii) a When the second set temperature difference is less than or equal to delta T and less than or equal to the first set temperature difference, the room temperature is close to the expected temperature of the user, if the indoor temperature is lower than the set temperature of the user through refrigeration dehumidification continuously, the comfort of the user is affected, and therefore dehumidification is carried out under the condition that the current temperature needs to be kept, and the constant-temperature dehumidification mode is entered.
Further optionally, the adjusting the opening degree of the first throttle valve and/or the second throttle valve by calculating the latent heat of sensible heat required by the indoor heat exchanger for temperature and humidity control comprises:
according to the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upTemperature difference Δ T, current indoor humidity DInner ringAnd setting the indoor humidity DSetting upCalculating the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger according to the humidity difference delta D;
taking the calculated sensible heat and latent heat as the input end of a neural network prediction model, and outputting a control strategy of a first throttle valve and/or a second throttle valve at the output end of the neural network prediction model;
the opening of the first throttle valve and/or the second throttle valve is controlled to be adjusted according to a control strategy.
In the cooling and dehumidifying mode, because the initial temperature and humidity are higher, the room needs cooling and dehumidifying, the indoor heat exchanger carries out full-refrigeration cooling and dehumidifying, and the opening P of the first throttle valve needs to be controlled at the moment1＜P1,MAXControlling the opening degree P of the second throttle valve2＝P2,MAX(ii) a The opening degree of the first throttle valve is dynamically adjusted in the cooling and dehumidifying process. In the constant temperature dehumidification mode, as the indoor temperature approaches the temperature set by the user, the room needs constant temperature humidity control, and the opening degree P of the second throttle valve is controlled at the moment2＜P2,MAXControlling the opening degree P of the first throttle valve1＝P1,MAX。P1,MAXIs the maximum opening of the first throttle valve, P2,MAXIs the maximum opening degree of the second throttle valve.
The air conditioning system of the embodiment enters the following dehumidification control and executes the startup action when receiving a terminal device (remote controller, mobile phone) refrigeration mode startup instruction, and does not execute the following control of controlling the air conditioner to execute the refrigeration operation in other modes such as a heating mode or a common air supply mode, and detects the temperature T set and the humidity D set by a user in real time, if the temperature T set and the humidity D set by the user are not set, the default set temperature T is set as a fixed value, and if the temperature T set and the humidity D set are set as fixed values, the default set temperature T is set as a fixed value, such as 27 ℃ and the humidity D set as 60%.
As shown in the control flow chart of fig. 3, first, the current environment temperature difference Δ T = T inner ring-T setting is determined, and if Δ T is greater than a first set value, the first set value is optionally 1 ℃, which indicates that the indoor environment temperature is higher than the temperature expected by the user at this time, so the system enters a cooling and dehumidifying mode; if the second set value is not less than delta T and not more than the first set value, and the second set value is optionally-2 ℃, the indoor environment temperature basically meets the temperature expected by the user at the moment, so the system enters a constant temperature and humidity control mode; if the delta T is less than-2 ℃, the indoor environment temperature is low, the system is stopped or only the inner fan executes the air supply mode without refrigerating and starting.
The neural network prediction model shown in FIG. 2 is mainly used for predictionUnder the condition of measuring different internal and external temperature and humidity working conditions, if the air conditioning system achieves the refrigeration sensible heat capacity Qc,sRefrigeration latent heat capacity Qc,LHeating capacity QhThe control strategy to be implemented as required by the air conditioner (e.g., by inputting the required target capacity and operating condition parameters, the model outputs the control strategy satisfying the input conditions, such as the compressor frequency F, the inner fan speed N1, the outer fan speed N2, the opening P of the first throttle valve1Opening degree P of the second throttle valve2)。
The neural network prediction model training of the embodiment is mainly obtained by obtaining a large number of model input parameters and training and learning of corresponding output parameters. The training data (input parameters and corresponding output parameters) acquisition mode can be obtained through air conditioner simulation calculation, experimental test, large data platform collection and the like.
In the embodiment, after the sensible heat and latent heat obtained by calculation are input into the neural network prediction model, the optimal control strategy meeting the current capacity required by temperature and humidity control is output through the neural network prediction model, so that the efficient energy-saving operation of the air conditioning system is realized.
Further optionally, in the cooling and dehumidifying mode, the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger includes sensible heat output Qc,sAnd latent heat output Qc,LAccording to the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upTemperature difference Δ T, current indoor humidity DInner ringAnd setting the indoor humidity DSetting upThe humidity difference delta D is used for calculating the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger, and the method comprises the following steps
Obtaining the current indoor temperature T every other a first set time nInner ringAnd the current humidity DInner ringAnd respectively calculating delta T (n) and delta D (n), wherein the delta T (n) is the current indoor temperature T at intervals of a first set time nInner ringAnd setting the indoor temperature TSetting upΔ D (n) is the current indoor humidity D at intervals of a first set time nInner ringAnd setting the indoor humidity DSetting upThe temperature difference satisfies the following conditions:
Qc,s＝m·[Ka·ΔT(n)+Kb·∫ΔT(n)·T+Kc·(ΔT(n)-ΔT(n-1))]+l；
Qc,L＝n·[Kd·ΔD(n)+Ke·∫ΔD(n)·T+Kf·(ΔD(n)-ΔD(n-1))]+p。
specifically, as shown in the control flow chart of fig. 3, if Δ T > a first set value is satisfied, and the cooling and dehumidifying mode is entered, the system executes the maximum opening P of the second throttle valve2＝P2,MAXWhile the first throttle valve is properly closed P1＜P1,MAXAt this time, the indoor heat exchanger is in a heat absorption and cooling state. At the moment, the capacity output of the indoor heat exchanger is divided into sensible heat output Qc,sAnd latent heat output Qc,LThe system collects the indoor temperature T every a first set time nInner ringAnd humidity DInner ringAnd calculating temperature and humidity deviation, wherein the first set time is 5s optionally,
ΔT(n)＝Tinner ring-TSetting up(ii) a Delta T (n) is the indoor temperature deviation acquisition calculation of the nth second;
ΔD(n)＝Dinner ring-DSetting up(ii) a Delta D (n) is the indoor humidity deviation collection calculation of the nth second;
then the system controller can calculate the currently required cold quantity at the nth second according to the temperature and humidity deviation:
Qc,s＝m·[Ka·ΔT(n)+Kb·∫ΔT(n)·T+Kc·(ΔT(n)-ΔT(n-1))]+l；
Qc,L＝n·[Kd·ΔD(n)+Ke·∫ΔD(n)·T+Kf·(ΔD(n)-ΔD(n-1))]+ p. In this example Kd、Ke、KfIs a proportionality coefficient in a formula, p is a compensation value, and any value can be selected according to requirements
Further optionally, the calculated sensible heat and latent heat magnitude is used as an input end of a neural network prediction model, and a control strategy of the first throttle valve and/or the second throttle valve is output at an output end of the neural network prediction model, and the control strategy comprises
Output sensible heat Qc,sAnd latent heat output Qc,LControlling a first throttle valve to output at the output end of the neural network prediction model as the input end of the neural network prediction modelAnd (4) strategy.
When calculating Qc,ssAnd Qc,LThen, the neural network prediction model is operated in the air conditioner controller as shown in fig. 2, and the algorithm is based on the system capacity state Qc,sAnd Qc,LAnd predicting a control strategy meeting the capacity requirement at the moment, wherein the first throttle valve is regulated and controlled only because the first control valve is in a full-open state in the constant-temperature dehumidification mode.
Further optionally, in the constant temperature dehumidification mode, the sensible heat latent heat required by the indoor heat exchanger for temperature and humidity control comprises a sensible heat output Qc,s-QhLatent heat output Qc,LWherein Q ishFor the heating sensible heat output of the first heat exchanging part, Qc,sFor the output of the sensible heat of the second heat exchanging part, Qc,LOutputting the refrigeration latent heat of the second heat exchange part; according to the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upTemperature difference Δ T, current indoor humidity DInner ringAnd setting the indoor humidity DSetting upThe humidity difference Delta D is used for calculating the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger, and the method comprises the steps of
Acquiring the current indoor temperature T every second set time NInner ringAnd the current humidity DInner ringAnd respectively calculating delta T (N) and delta D (N), wherein the delta T (N) is the current indoor temperature T at the second set time NInner ringAnd setting the indoor temperature TSetting upΔ D (N) is the current indoor humidity D at the second set time NInner ringAnd setting the indoor humidity DSetting upThe temperature difference satisfies the following conditions:
Qc,s-Qh＝m’·[Ka’·ΔT(n)+Kb’·∫ΔT(n)·T+Kc’·(ΔT(n)-ΔT(n-1))]+l’，
Qc,L＝n’·[Kd’·ΔD(N)+Ke’·∫ΔD(N)·T+Kf’·(ΔD(N)-ΔD(N-1))]+ p'. In particular, e.g.
FIG. 3 is a control flow chart showing that if the second set value Δ T ≦ the first set value is satisfied, which indicates that the room temperature is close to the user's desired temperature, and the system enters the constant temperature and humidity control mode, the system executes the maximum opening P of the first throttle valve1＝P1,MAXAnd the second throttle valve is properly closed P2≤P2,MAXAt this time, the indoor heat exchanger is divided into a first heat exchanging part in front of the second throttle valve and a second heat exchanging part behind the second throttle valve, the first heat exchanging part is a reheating section, and the second heat exchanging part is a refrigerating and dehumidifying section. Therefore, the capacity output of the inner machine heat exchanger is divided into the heating sensible heat capacity Q of the reheating sectionhRefrigeration sensible heat output Q of dehumidification sectionc,sAnd latent heat of refrigeration output Qc,L. In order that the room temperature is close to the expected temperature of the user, the refrigerating capacity output of the system is low, and the temperature and humidity change is not obvious, so that the system collects the room temperature T at intervals of second set time N in the modeInner ringAnd humidity DInner ringAnd calculating temperature and humidity deviation, wherein the second set time N is greater than or equal to the first set time N, and the second set time N is optionally 30s:
ΔT(N)＝Tinner ring-TSetting up(ii) a Delta T (N) is the indoor temperature deviation collection calculation of the Nth second;
ΔD(N)＝Dinner ring-DSetting up(ii) a Delta D (N) is the collection and calculation of the indoor humidity deviation in the Nth second;
then the system controller can calculate the cooling capacity currently required by the second set time N according to the temperature and humidity deviation:
Qc,s-Qh＝m’·[Ka’·ΔT(N)+Kb’·∫ΔT(N)·T+Kc’·(ΔT(N)-ΔT(N-1))]+l’
Qc,L＝n’·[Kd’·ΔD(N)+Ke’·∫ΔD(N)·T+Kf’·(ΔD(N)-ΔD(N-1))]+ p'. In this example Kd’、Ke’、Kf'is a proportionality coefficient in the formula, and p' is a compensation value, and any value can be selected according to needs.
When delta T is more than 0 ℃ and less than or equal to a first set value, Qc,s-QhWhen the sensible heat capacity of the dehumidification section is higher than that of the reheating section, the room temperature can be reduced until a set target is reached;
when delta T is less than or equal to 0 ℃, Qc，s-QhIs less than 0, at the moment, the sensible heat capacity of the refrigeration of the dehumidification section is slightly higher than that of the heating of the reheating sectionSensible heat capacity, which can raise the room temperature back to the set target;
after collecting and calculating the temperature and humidity deviation, simultaneously calculating a humidity accurate adjustment mode:
when the delta D is larger than or equal to the humidity threshold value, the first set humidity can be selected to be-10%, and the humidity is still in the adjustable range at the moment, the refrigeration latent heat Q of the dehumidification sectionc，LWhen the temperature is higher than 0 ℃, the humidity in the air can be continuously reduced to be near the set humidity;
when delta D is less than the humidity threshold value, the humidity is out of the adjusting range or excessive dehumidification is performed at the moment, the system is expected to stop dehumidification, and the refrigeration latent heat Q of the dehumidification sectionc,L=0 ℃; because the air conditioner can not humidify, the outdoor air can be leaked by the doors and the windows to improve the indoor humidity.
When calculating Qc,s-QhAnd Qc,LThen, the neural network prediction model is operated in the air conditioner controller as shown in fig. 2, and by using the neural network prediction model (fig. 3) operated in the air conditioner controller, the algorithm can be based on the system capacity state Qc,s-QhAnd Qc,LThe control strategy for predicting the meeting capacity requirement at the moment is that the first control valve is in a full-open state in the constant-temperature dehumidification mode, and the second throttle valve is regulated and controlled
Further optionally, in the cooling dehumidification mode, an adjustment period is set every first set time N, and in the constant-temperature dehumidification mode, an adjustment period is set every second set time N. After the air conditioning system adjusts the action of the actuator according to the optimal control strategy predicted by the neural network algorithm, the control strategy of the neural network prediction of the optimal control strategy in the current adjustment period is executed, then the temperature and humidity control mode in the next adjustment period is judged again, the sensible heat and the latent heat of refrigeration required by the change of the environmental temperature and humidity in the next adjustment period are calculated, the control strategy of the neural network prediction of the optimal control strategy in the next adjustment period is executed, the air conditioning actuator is circularly calculated and adjusted in the above way, and the preliminary temperature and humidity adjustment in the temperature reduction and dehumidification stage can be realized. Control will proceed to the next adjustment cycle unless a user shutdown command is received at the controller.
Further optionally, to reduce humidity conditioningThe mode control switching process influences the temperature to cause discomfort of a user, and the sensible heat output Q of the air conditioner in the first adjusting period of entering the constant-temperature dehumidification modec,s-QhCalculating value Q according to sensible heat of last adjustment period in exiting cooling and dehumidifying processc,sAnd the assignment can ensure the continuity of temperature regulation.
Further optionally, the output end of the neural network prediction model further outputs a control strategy of the operating frequency of the compressor, the rotating speed of the inner fan and the rotating speed of the outer fan, and the air conditioner controls the compressor, the inner fan and the outer fan to operate according to the control strategy output by the neural network prediction model. And when the neural network prediction mode outputs a plurality of groups of control strategies, selecting the control strategy with the lowest compressor running frequency from the plurality of groups of control strategies to control the air conditioner.
The neural network prediction model of the embodiment outputs a control strategy of the first throttle valve and the second throttle valve, and also outputs a plurality of groups of control strategies of which the operating frequency of the compressor meets the current capacity requirement is F and the rotating speed of the internal/external fan is N1/N2, the possible model can predict the plurality of groups of control strategies meeting the capacity requirement, the lowest operating frequency F (or the lowest power value W) of the compressor is generally selected as the optimal control strategy, and at the moment, the power consumption is low, so that the energy-saving operation of the air conditioner is facilitated.
The present embodiments also provide a control apparatus comprising one or more processors and a non-transitory computer readable storage medium storing program instructions which, when executed by the one or more processors, the one or more processors are configured to implement a method according to any of the above.
The present embodiments also propose a non-transitory computer-readable storage medium having stored thereon program instructions which, when executed by one or more processors, are used to implement the method of any of the above.
The embodiment also provides an air conditioner which adopts any refrigerating system or adopts any method or comprises the control device or is provided with the non-transitory computer readable storage medium.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (16)

1. A refrigeration system, comprising an outdoor heat exchanger, a compressor, an indoor heat exchanger, and a first throttle valve; the indoor heat exchanger comprises a first heat exchange part and a second heat exchange part, the first throttle valve is positioned between the first end of the first heat exchange part and the first end of the outdoor heat exchanger, a second throttle valve is arranged between the second end of the first heat exchange part and the first end of the second heat exchange part, the second end of the second heat exchange part is connected with the air suction port of the compressor, and the air exhaust port of the compressor is connected with the second end of the outdoor heat exchanger;
the refrigerating system also comprises a control module, and in the refrigerating operation process of the air conditioner, when the indoor working condition reaches a first temperature condition, the air conditioner enters a cooling and dehumidifying mode; when the indoor working condition reaches a second temperature condition, the air conditioner enters a constant temperature dehumidification mode;
in the cooling and dehumidifying mode, the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger comprise sensible heat output Qc,sAnd latent heat output Qc,LAcquiring the current indoor temperature T every other first set time nInner ringAnd the current humidity DInner ringAnd respectively calculating delta T (n) and delta D (n), wherein the delta T (n) is the current indoor temperature T acquired at intervals of a first set time nInner ringAnd setting the indoor temperature TSetting upΔ D (n) is the current indoor humidity D obtained every first set time nInner ringAnd setting the indoor humidity DSetting upAnd satisfies the following conditions:
Qc,s＝m·[Ka·ΔT(n)+Kb·∫ΔT(n)·T+Kc·(ΔT(n)-ΔT(n-1))]+l，
Qc,L＝n·[Kd·ΔD(n)+Ke·∫ΔD(n)·T+Kf·(ΔD(n)-ΔD(n-1))]+p；
wherein, Ka、Kb、Kc、Kd、Ke、KfIs a proportionality coefficient, and l and p are compensation values;
in the constant-temperature dehumidification mode, the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger comprise sensible heat output Qc,s-QhLatent heat output Qc,LWherein Q ishFor the output of the heating sensible heat of the first heat exchanging part, Qc,sFor the sensible heat output of the second heat exchanging part, Qc,LObtaining the current indoor temperature T every a second set time N for the output of the latent heat of refrigeration of the second heat exchange partInner ringAnd the current humidity DInner ringAnd respectively calculating delta T (N) and delta D (N), wherein the delta T (N) is the current indoor temperature T acquired every second set time NInner ringAnd setting the indoor temperature TSetting upΔ D (N) is the current indoor humidity D obtained every second set time NInner ringAnd setting the indoor humidity DSetting upAnd satisfies the following conditions:
Qc,s-Qh＝m’·[Ka’·ΔT(N)+Kb’·∫ΔT(N)·T+Kc’·(ΔT(N)-ΔT(N-1))]+l’，
Qc,L＝n’·[Kd’·ΔD(N)+Ke’·∫ΔD(N)·T+Kf’·(ΔD(N)-ΔD(N-1))]+p’；
wherein, Ka’、Kb’、Kc’、Kd’、Ke’、Kf' is a proportionality coefficient, and p ' and l ' are compensation values;
the second set time N is more than or equal to the first set time N;
sensible heat output Q of air conditioner in first adjustment period of entering constant temperature dehumidification modec,s-QhCalculating sensible heat according to the last adjustment period of the cooling and dehumidifying processValue Qc,sAssigning;
sensible heat output and latent heat output are used as input ends of a neural network prediction model, the output end of the neural network prediction model outputs the opening degree of a first throttle valve and/or a second throttle valve, and the lowest running frequency F or the lowest power value W of the compressor is selected as an optimal control strategy.
2. The refrigeration system of claim 1, wherein the refrigeration system is a heat pump refrigeration system comprising a four-way reversing valve connected between the second end of the second heat exchanging portion, the second end of the outdoor heat exchanger, and the suction port and the discharge port of the compressor.
3. A dehumidification control method of a refrigeration system according to claim 1 or 2, wherein the dehumidification control method comprises:
in the process of refrigerating operation of the air conditioner, when the indoor working condition reaches a first temperature condition, the air conditioner enters a cooling and dehumidifying mode; when the indoor working condition reaches a second temperature condition, the air conditioner enters a constant temperature dehumidification mode;
in the cooling dehumidification mode and the constant-temperature dehumidification mode, the opening degree of the first throttle valve and/or the second throttle valve is/are adjusted by calculating the sensible heat latent heat required by temperature and humidity control of the indoor heat exchanger.
4. The dehumidification control method of a refrigeration system according to claim 3, wherein when the indoor condition reaches the first temperature condition, the air conditioner enters a cooling and dehumidification mode, which comprises obtaining a current indoor temperature, calculating a current indoor temperature TInner ringAnd setting the indoor temperature TSetting upΔ T, Δ T = TInner ring-TSetting up(ii) a And when the delta T is larger than the first set temperature difference, entering a cooling and dehumidifying mode.
5. The dehumidification control method of claim 3, wherein the indoor condition reaches the second temperatureWhen the condition is met, the air conditioner enters a constant temperature dehumidification mode, including obtaining the current indoor temperature and calculating the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upΔ T, Δ T = TInner ring-TSetting up(ii) a And when the second set temperature difference is less than or equal to delta T and less than or equal to the first set temperature difference, entering a constant temperature dehumidification mode.
6. The dehumidification control method of a refrigeration system according to claim 4 or 5, wherein the adjusting the opening degree of the first throttle valve and/or the second throttle valve by calculating the amount of latent heat of sensible heat required for temperature and humidity control of the indoor heat exchanger comprises:
according to the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upTemperature difference Δ T, current indoor humidity DInner ringAnd setting the indoor humidity DSetting upCalculating the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger according to the humidity difference delta D;
taking the calculated sensible heat and latent heat as an input end of a neural network prediction model, and outputting a control strategy of the first throttle valve and/or the second throttle valve at an output end of the neural network prediction model;
controlling the opening of the first throttle valve and/or the second throttle valve is adjusted according to the control strategy.
7. The dehumidification control method of a refrigeration system according to claim 6, wherein the controlling the opening of the first throttle valve and/or the second throttle valve to adjust according to the control strategy comprises: in the cooling dehumidification mode, the opening degree P of the first throttle valve is controlled1＜P1,MAXControlling the opening degree P of the second throttle valve2＝P2,MAX(ii) a In the constant temperature dehumidification mode, the opening degree P of the second throttle valve is controlled2＜P2,MAXControlling the opening degree P of the first throttle valve1＝P1,MAX，P1,MAXIs the maximum opening of the first throttle valve, P2,MAXIs the most important of the second throttle valveA large opening degree.
8. The dehumidification control method of claim 7, wherein in the cooling and dehumidification mode, the amount of sensible heat and latent heat required for temperature and humidity control of the indoor heat exchanger comprises a sensible heat output Qc,sAnd latent heat output Qc,L(ii) a According to the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upTemperature difference Δ T, current indoor humidity DInner ringAnd setting the indoor humidity DSetting upCalculating the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger by the humidity difference delta D, including
Obtaining the current indoor temperature T every other a first set time nInner ringAnd the current humidity DInner ringAnd respectively calculating delta T (n) and delta D (n), wherein the delta T (n) is the current indoor temperature T acquired at intervals of a first set time nInner ringAnd setting the indoor temperature TSetting upΔ D (n) is the current indoor humidity D obtained every first set time nInner ringAnd setting the indoor humidity DSetting upAnd satisfies the following conditions:
Qc,s＝m·[Ka·ΔT(n)+Kb·∫ΔT(n)·T+Kc·(ΔT(n)-ΔT(n-1))]+l，
Qc,L＝n·[Kd·ΔD(n)+Ke·∫ΔD(n)·T+Kf·(ΔD(n)-ΔD(n-1))]+p；
wherein, Ka、Kb、Kc、Kd、Ke、KfIs a proportionality coefficient, and l and p are compensation values.
9. The dehumidification control method of a refrigeration system according to claim 8, wherein the calculating the calculated sensible heat and latent heat magnitude as an input of a neural network prediction model, and the controlling strategy of the first throttle valve and/or the second throttle valve is output at an output of the neural network prediction model comprises
Output sensible heat Qc,sAnd latent heat output Qc,LAs input for a neural network prediction modelAnd outputting the control strategy of the first throttle valve through the output end of the network prediction model.
10. The dehumidification control method of claim 7, wherein in the constant temperature dehumidification mode, the amount of sensible heat and latent heat required for the temperature and humidity control of the indoor heat exchanger comprises a sensible heat output Qc,s-QhLatent heat output Qc,LWherein Q ishFor the output of the heating sensible heat of the first heat exchanging part, Qc,sFor the output of the sensible heat of the second heat exchanging part, Qc,LOutputting the latent heat of refrigeration of the second heat exchanging part; according to the current indoor temperature TInner ringAnd setting the indoor temperature TSetting upTemperature difference Δ T, current indoor humidity DInner ringAnd setting the indoor humidity DSetting upCalculating the sensible heat and latent heat required by the temperature and humidity control of the indoor heat exchanger by the humidity difference delta D, including
Acquiring the current indoor temperature T every second set time NInner ringAnd the current humidity DInner ringAnd respectively calculating delta T (N) and delta D (N), wherein the delta T (N) is the current indoor temperature T acquired at intervals of a second set time NInner ringAnd setting the indoor temperature TSetting upΔ D (N) is the current indoor humidity D obtained every second set time NInner ringAnd setting the indoor humidity DSetting upAnd satisfies the following conditions:
Qc,s-Qh＝m’·[Ka’·ΔT(N)+Kb’·∫ΔT(N)·T+Kc’·(ΔT(N)-ΔT(N-1))]+l’，
Qc,L＝n’·[Kd’·ΔD(N)+Ke’·∫ΔD(N)·T+Kf’·(ΔD(N)-ΔD(N-1))]+p’；
wherein, Ka’、Kb’、Kc’、Kd’、Ke’、Kf' is a scaling factor, and p ', l ' are compensation values.
11. The dehumidification control method of claim 10, wherein the calculating of the latent heat of sensible heat value as an input of a neural network prediction model, and outputting a control strategy of the first throttle valve and the second throttle valve at an output of the neural network prediction model comprises
Output sensible heat Qc,s-QhAnd latent heat output Qc,LAnd as the input end of the neural network prediction model, outputting the control strategy of the second throttle valve at the output end of the neural network prediction model.
12. The dehumidification control method of a refrigeration system according to claim 9 or 11, wherein the output of the neural network prediction model further outputs control strategies of an operating frequency of a compressor, a rotating speed of an inner fan and a rotating speed of an outer fan, and the air conditioner controls the compressor, the inner fan and the outer fan to operate according to the control strategies output by the neural network prediction model.
13. The dehumidification control method of a refrigeration system according to claim 11, wherein when the neural network prediction mode outputs a plurality of sets of control strategies, a control strategy with a lowest compressor operation frequency is selected from the plurality of sets of control strategies to control the air conditioner.
14. A control apparatus comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions which, when executed by the one or more processors, are operable to implement the method of any one of claims 3-13.
15. A non-transitory computer-readable storage medium having stored thereon program instructions which, when executed by one or more processors, are operable to implement the method of any one of claims 3-13.
16. An air conditioner employing a refrigeration system as claimed in claim 1 or 2, or employing a method as claimed in any one of claims 3 to 13, or including a control device as claimed in claim 14, or having a non-transitory computer readable storage medium as claimed in claim 15.
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