CN119532916B - Air treatment system and control method thereof - Google Patents
Air treatment system and control method thereofInfo
- Publication number
- CN119532916B CN119532916B CN202311120755.0A CN202311120755A CN119532916B CN 119532916 B CN119532916 B CN 119532916B CN 202311120755 A CN202311120755 A CN 202311120755A CN 119532916 B CN119532916 B CN 119532916B
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- 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
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- 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
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
- F24F1/0358—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing with dehumidification means
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- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- 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
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- 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
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- 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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
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- 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
- F24F2110/20—Humidity
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
本申请公开了一种空气处理系统及控制方法，属于空气处理技术领域。空气处理系统包括：新风调湿机；新风调湿机包括：新风风道；吸附组件，设于新风风道内，在新风调湿机除湿运行时吸附组件吸收新风风道内新风的水分；新风送风机，用于驱动新风风道内的新风流向室内；空气处理系统还包括：新风湿度检测装置，用于检测新风送风含湿量；回风湿度检测装置，用于检测室内空气含湿量。控制方法包括根据室内空气含湿量和室内设定含湿量计算得到目标送风含湿量；判断新风送风含湿量与目标送风含湿量的关系是否满足第一预设允许条件，若不满足，则控制新风送风机降速，若满足，则保持当前状态。本空气处理系统及控制方法能够实现快速节能除湿。
This application discloses an air handling system and control method, belonging to the field of air handling technology. The air handling system includes: a fresh air dehumidifier; the fresh air dehumidifier includes: a fresh air duct; an adsorption component disposed within the fresh air duct, which absorbs moisture from the fresh air in the fresh air duct during dehumidification operation; a fresh air supply fan for driving the fresh air in the fresh air duct to flow into the room; the air handling system also includes: a fresh air humidity detection device for detecting the humidity content of the fresh air supply; and a return air humidity detection device for detecting the humidity content of the indoor air. The control method includes calculating a target supply air humidity content based on the indoor air humidity content and a set indoor humidity content; determining whether the relationship between the fresh air supply humidity content and the target supply air humidity content meets a first preset allowable condition; if not, controlling the fresh air supply fan to reduce speed; if so, maintaining the current state. This air handling system and control method can achieve rapid, energy-saving dehumidification.
Description
Technical Field
The application relates to the technical field of air treatment, in particular to an air treatment system and a control method thereof.
Background
An air conditioner is a device for adjusting the temperature, humidity of indoor air, and discharges cooled air obtained through a refrigerating cycle, which is generally composed of processes of compressing, condensing, expanding and evaporating a refrigerant, to an indoor space, or discharges heated air obtained by reversely performing the above processes to an indoor space, thereby adjusting the indoor air. The fresh air humidity regulator is a device for introducing the humidity-regulated fresh air into a room, and the fresh air humidity regulator regulates the indoor air by sending the fresh air with proper humidity into the room.
Along with the improvement of the indoor environment requirements of people, the scenes that the air conditioner and the fresh air humidity regulator simultaneously have are more and more, and as the two devices have the dehumidification function, how to quickly dehumidify and save energy becomes a technical problem to be solved in the field.
Disclosure of Invention
The application provides an air treatment system and a control method, which can realize rapid energy-saving dehumidification.
The air treatment system comprises a fresh air humidity regulator, an adsorption component, a fresh air blower and a control unit, wherein the fresh air humidity regulator comprises a fresh air channel, the adsorption component is arranged in the fresh air channel and used for absorbing the moisture of the fresh air in the fresh air channel when the fresh air humidity regulator is in dehumidification operation, and the fresh air blower is used for driving the fresh air in the fresh air channel to flow indoors;
the air treatment system further comprises:
the fresh air humidity detection device is used for detecting the humidity content of fresh air supply, the return air humidity detection device is used for detecting the humidity content of indoor air, and the controller is used for calculating to obtain the target humidity content of the fresh air supply according to the detection value of the return air humidity detection device and the indoor set humidity content in a fresh air dehumidification mode, and controlling the fresh air feeder to slow down when the relation between the detection value of the fresh air humidity detection device and the target humidity content of the fresh air supply does not meet a first preset permission condition.
In some embodiments, the target supply air moisture Dsa is calculated according to the following formula:
Dsa=ds-Wx/(Gx·ρ1);
Wx=Go×ρ2×|dra-ds|;
Where ds represents the indoor set moisture content, dra represents the moisture content of the indoor air, wx represents the required dehumidification amount of the indoor space, gx represents the fresh air supply amount of the fresh air conditioner, go represents the indoor space volume, ρ1 represents the density of the outdoor air, and ρ2 represents the density of the indoor air.
In some embodiments, the air conditioner further comprises an air conditioner, and the controller is used for controlling the fresh air blower to resume the preset default rotating speed operation and the air conditioner to start dehumidification if the relation between the detection value of the fresh air humidity detection device and the target air supply moisture content still does not meet the first preset allowable condition when the fresh air blower is decelerated to the preset rotating speed value.
In some embodiments, in the fresh air dehumidification mode, the air conditioner is turned off or a high-heat mode is operated.
In some embodiments, after the fresh air blower is in the deceleration operation for a preset time t1, the method returns to judge whether the relation between the detection value of the fresh air humidity detection device and the target air supply moisture content meets the first preset allowable condition, and if not, the fresh air blower continues to decelerate.
In some embodiments, the air conditioner includes a refrigerant circuit formed by a second compressor, a second four-way valve, an outdoor heat exchanger, a second expansion valve, and an indoor heat exchanger;
the illustrated controller is for:
And in the common dehumidification mode, calculating the dehumidification amount required by the air conditioner according to the indoor air moisture content and the indoor set moisture content, looking up a table according to the dehumidification amount required by the air conditioner to obtain a target frequency of the second compressor, and controlling the second compressor to operate according to the target frequency.
In some embodiments, the controller is to:
And after the second compressor operates for a preset time t2 according to the target frequency, judging whether the relation between the indoor return air moisture content and the indoor set moisture content meets a second preset permission condition, if so, turning off the second compressor, and if not, raising the frequency of the second compressor.
In some embodiments, the amount of dehumidification Wx2 required for an air conditioner is calculated according to the following formula:
Wx2=Gin×ρ2×|dra-ds|;
where dra represents the indoor air moisture content, ds represents the indoor set moisture content, gin represents the air supply quantity of the indoor unit of the air conditioner, and ρ2 represents the indoor air density.
In some embodiments, the controller is configured to control the fresh air conditioner to operate at a preset default rotational speed in a common dehumidification mode.
The application further provides a control method of the air treatment system, which comprises a fresh air humidity regulator, an adsorption component, a fresh air blower and a control unit, wherein the fresh air humidity regulator comprises a fresh air channel, the adsorption component is arranged in the fresh air channel and used for absorbing the moisture of the fresh air in the fresh air channel when the fresh air humidity regulator dehumidifies and operates;
The control method comprises the following steps:
acquiring indoor air moisture content, indoor set moisture content and fresh air supply moisture content;
calculating to obtain the fresh air target air supply moisture content according to the indoor air moisture content and the indoor set moisture content;
Judging whether the relation between the fresh air supply moisture content and the target air supply moisture content meets a first preset permission condition, if not, controlling the fresh air blower to reduce the speed, and if so, keeping the current state.
Drawings
FIG. 1 illustrates a schematic view of a usage scenario of an air treatment system according to some embodiments;
FIG. 2 illustrates a schematic diagram of a fresh air conditioner of an air handling system according to some embodiments;
FIG. 3 illustrates a schematic diagram of a refrigeration system in a fresh air conditioner of an air handling system, according to some embodiments;
FIG. 4 illustrates a schematic diagram of a refrigeration system in an air conditioner of an air handling system, according to some embodiments;
FIG. 5 illustrates a control block diagram of an air handling system according to some embodiments;
FIG. 6 illustrates a flow chart of a fresh air dehumidification mode of an air handling system in accordance with some embodiments;
FIG. 7 illustrates a flow chart of a common dehumidification mode of an air treatment system in accordance with some embodiments;
In the above figures, 100, an air treatment system, 200, an air conditioner, 210, an outdoor unit, 213, a second compressor, 214, an outdoor heat exchanger, 215, a second four-way valve, 216, a second expansion valve, 220, an indoor unit, 221, an indoor heat exchanger;
300. Fresh air humidity regulator 310, fresh air duct 320, exhaust duct 330, adsorption wheel 340, fresh air blower 350, indoor exhaust fan 360, first heat exchanger 370, second heat exchanger 381, first compressor 382, first four-way valve 383, first expansion valve;
400. The device comprises a controller 410, a memory 420, a communication module 430, an input unit 440, an indoor temperature and humidity detection device 450 and a fresh air humidity detection device.
Detailed Description
For the purposes of making the objects and embodiments of the present application more apparent, an exemplary embodiment of the present application will be described in detail below with reference to the accompanying drawings in which exemplary embodiments of the present application are illustrated, it being apparent that the exemplary embodiments described are only some, but not all, of the embodiments of the present application.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, an air treatment system 100 according to an embodiment of the present application includes an air conditioner 200 and a fresh air conditioner 300.
The fresh air conditioner 300 generally adopts a mode of combining an adsorption component made of an adsorption material and a refrigerating system to regulate the sensible heat load and the latent heat load of fresh air. The working principle is mainly that the temperature of an adsorption inlet is regulated through an evaporator of a refrigerating system, and the heat of a condenser of the refrigerating system is discharged to regenerate an adsorption material, so that continuous adsorption and desorption of the adsorption material are realized.
The fresh air humidity regulator has two general structural forms, one is a rotating wheel type structure, the adsorption component is a rotating wheel, adsorption and regeneration are alternately realized by rotation of the rotating wheel, and the other is an air channel switching structure, the adsorption component is fixed, and the fresh air channel and the exhaust air channel are continuously switched, so that adsorption and regeneration are alternately realized.
Taking a wheel-type fresh air conditioner as an example, the structure of the fresh air conditioner 300 will be briefly described below:
referring to fig. 2, the fresh air conditioner 300 includes a fresh air duct 310 for supplying outdoor fresh air into a room, and an exhaust duct 320 for exhausting indoor air to the outside.
One part of the adsorption runner 330 is positioned in the fresh air duct 310, and the other part is positioned in the exhaust air duct 320.
The fresh air blower 340 is disposed in the fresh air duct 310, and is used for driving outdoor fresh air to be fed indoors along the fresh air duct 310.
The indoor exhaust fan 350 is disposed in the exhaust duct 320 to drive indoor air to be exhausted to the outside along the exhaust duct 320.
The first heat exchanger 360 is disposed within the fresh air duct 310 and on the windward side of the adsorption rotor 330. The second heat exchanger 370 is disposed in the exhaust duct 320 and located on the windward side of the adsorption rotor 330.
Referring to fig. 3, the fresh air conditioner 300 has a refrigeration system having the same structure and operation principle as those of the air conditioner, and includes a first compressor 381 for compressing a refrigerant, a second heat exchanger 370 for performing heat exchange between the exhaust air in the exhaust air duct 320 and the refrigerant, a first heat exchanger 360 for performing heat exchange between the fresh air in the fresh air duct 310 and the refrigerant, a first four-way valve 382 for selectively guiding the refrigerant compressed by the first compressor 381 to the second heat exchanger 370 or the first heat exchanger 360 according to a dehumidification mode or a humidification mode, and a first expansion valve 383 for decompressing the refrigerant.
In the dehumidification mode, the first heat exchanger 360 is an evaporator, so that the temperature of fresh air is reduced, the adsorption wheel 330 absorbs moisture of the fresh air, the fresh air is dehumidified and then sent into a room, the second heat exchanger 370 is a condenser, and the second heat exchanger 370 is a heating exhaust air, so that the adsorption wheel 330 regenerates the adsorption wheel 330, in the humidification mode, the second heat exchanger 370 is an evaporator, so that the exhaust air temperature is reduced, the adsorption wheel 330 absorbs the exhausted moisture, the first heat exchanger 360 is a condenser, and the fresh air is heated, so that the adsorption wheel 330 absorbs moisture to be separated, and the fresh air is humidified.
The air conditioner structure is briefly described as follows:
Referring to fig. 1, the air conditioner 200 includes an outdoor unit 210 for performing heat exchange between a refrigerant and outdoor air, and an indoor unit 220 located in an indoor space for performing heat exchange between the refrigerant and indoor air.
The outdoor unit 210 and the indoor unit 220 in the air conditioner 200 may be separated, in which case the outdoor unit 210 is located in an outdoor space and the indoor unit 220 is located in an indoor space. The indoor unit 220 may be a multi-split air conditioner having a plurality of indoor units to be applied to places such as malls, office buildings, factories, etc.
In other embodiments, the air conditioner 200 may be an integrated machine, that is, the outdoor unit 210 and the indoor unit 220 are integrated on one housing, the integrated machine is commonly found in a ceiling-mounted scene, the outdoor unit 210 is communicated with the outdoor space through an air duct, and the indoor unit 220 is communicated with the indoor space through an air duct.
The air conditioner further includes a refrigerating system having a second compressor 213 compressing a refrigerant, an outdoor heat exchanger 214 performing heat exchange between outdoor air and the refrigerant, an indoor heat exchanger 223 performing heat exchange between indoor air and the refrigerant, a second four-way valve 215 selectively guiding the refrigerant compressed by the second compressor 213 to the outdoor heat exchanger 214 or the indoor heat exchanger 221 according to a heating mode or a cooling mode, and a second expansion valve 216 decompressing the refrigerant, as shown in fig. 4.
The air conditioner has a high sensible heat mode, which refers to an operation mode of the air conditioner when the air conditioner performs cooling or dehumidifying, and has a higher sensible heat ratio when the air conditioner operates in the high sensible heat mode than in other modes. When the air conditioner is in the high sensible heat mode, the opening degree of the second expansion valve of the refrigerating system is smaller, and the running frequency of the second compressor is lower.
Hereinafter, signal flow between components included in the air treatment system will be described.
Referring to fig. 5, the controller 400 is used to receive the detection data of the air conditioner 200 and the fresh air conditioner 300 and to change the operation of the air conditioner 200 and the fresh air conditioner 300 after calculation.
Memory 410 for storing programs and data related to the operation of the air handling system, memory 410 may be implemented by at least one of non-volatile memory (e.g., cache memory, read only memory (RO M), programmable RO M (PRO M), erasable Programmable ROM (EPROM) and flash memory), volatile memory (e.g., random Access Memory (RAM)) or storage media such as a Hard Disk Drive (HDD) and CD-ROM, but is not limited thereto.
The communication module 420 is configured to implement communication between the controller 400 and the air conditioner 200 and between the controller 400 and the fresh air conditioner 300, and for example, the temperature and humidity detection information of the air conditioner 200 and the fresh air conditioner 300 can be shared to the controller 400 through the communication module 320.
The communication module 420 may be a wired communication or a wireless communication. The wireless communication may use at least one of fifth generation (5G) mobile communication, long Term Evolution (LTE), LTE-advanced (LTE-a), code Division Multiple Access (CDMA), wideband CDMA (WCDMA), universal Mobile Telecommunications System (UMTS), wireless broadband (WiBro), or global system for mobile communications (GSM) as a cellular communication protocol, and further, the wireless communication may include local communication, which may include at least one of wireless fidelity (WiFi), bluetooth, or Near Field Communication (NFC), and the wired communication may include at least one of Universal Serial Bus (USB), high Definition Multimedia Interface (HDMI), recommended standard 232 (RS-232), or Plain Old Telephone Service (POTS).
The input unit 430 may receive input from a user, and may include a button switch, a membrane switch, a touch panel, or the like for receiving an operation command for the air treatment system. Specifically, the input unit may receive the indoor set moisture content ds from the user.
The indoor humidity detecting device 440 may be disposed at a return air inlet of the indoor unit 220 or may be disposed at a return air inlet of the fresh air conditioner 300, for detecting an indoor air moisture dra of an indoor space;
the fresh air humidity detection device 450 may be disposed at an air supply port of the fresh air conditioner 300, and is configured to detect a fresh air supply moisture content dsa.
Hereinafter, a method of operating the air treatment system will be described.
In some embodiments of the present application, a fresh air dehumidification mode, which is mainly dehumidification of a fresh air conditioner, and a common dehumidification mode, which is used for common dehumidification of the fresh air conditioner and an air conditioner, can be realized.
< Fresh air dehumidification mode >
The fresh air humidity regulator operates in a dehumidification mode, and the fresh air blower operates according to a preset default wind speed.
Referring to fig. 6, s100 calculates a required dehumidification amount Wx of the indoor space from the indoor air humidity amount dra and the indoor set humidity amount ds, and calculates a target supply air humidity amount Dsa from the required dehumidification amount Wx of the indoor.
Wx=Go×ρ2×|dra-ds|;
Dsa=ds-Wx/(Gx·ρ1);
Ds represents the indoor set moisture content, dra represents the moisture content of the indoor air, gx represents the fresh air supply amount of the fresh air conditioner, go represents the indoor space volume, ρ1 represents the density of the outdoor air, ρ2 represents the density of the indoor air.
In the application, the indoor space required dehumidifying amount Wx is estimated according to the indoor air moisture content dra and the indoor set moisture content ds, and compared with the method that various detection devices such as a human body sensor are required to be arranged when the indoor moisture load is used for calculating the dehumidifying amount, the method can omit the detection devices and simplify the system structure.
The indoor humidity of the fresh air humidity regulator can be changed continuously in the dehumidification process, so that Wx is calculated according to the difference between dra and ds and is also changed continuously, and the aim of accurate regulation can be achieved according to the relation between the current fresh air supply moisture content and the target air supply moisture content.
S101, judging whether the relation between the fresh air supply moisture content Dsa and the target air supply moisture content Dsa meets a first preset permission condition, if so, entering S102, keeping the current running state of the fresh air conditioner, and if not, entering S103, and reducing the rotating speed of the fresh air blower.
Specifically, the first preset permission condition is that Dsa is equal to or less than Dsa-a, and a is a preset value, for example, a=1.
If Dsa is less than or equal to Dsa-1, the fresh air supply humidity is not higher than the target air supply humidity, the operation is continued according to the current state, S102 is carried out, if not, dsa is greater than Dsa-1, the fresh air supply humidity is larger, and the rotation speed of the fresh air blower is reduced, S103 is carried out.
The rotation speed of the fresh air blower is reduced, so that the fresh air supply quantity is reduced, and the supply moisture content of the fresh air can be reduced, thereby reducing the indoor humidity.
In some embodiments of the present application, the rotation speed of the fresh air blower may be reduced by a preset ratio, for example, the rotation speed of the fresh air blower is reduced by 10% each time, and then the preset time t1 passes back to S101 to re-determine, and if it is still determined that the determination is not true, the rotation speed of the fresh air blower is continuously reduced by 10%.
S104, when the rotating speed of the fresh air blower is reduced to a preset wind speed value and Dsa is not equal to or less than Dsa-1, entering a common humidity control mode of S200, the fresh air humidity control machine and the air conditioner.
For example, when the preset wind speed value is 50% of the default wind speed and the rotation speed of the fresh air blower is reduced to not higher than 50% of the default wind speed, dsa is not equal to Dsa-1, and the common dehumidification mode is switched.
The rotating speed of the fresh air blower is lower, so that the adjusting speed of the fresh air humidity regulator to the indoor humidity is slow, the comfort feeling of a user to the indoor can be influenced, and the air conditioner is added to dehumidify the fresh air blower together, so that the adjusting speed of the indoor humidity can be increased.
In the fresh air dehumidification mode, the air conditioner is in a shut-off or high sensible heat mode so as to achieve the purpose of energy conservation.
According to the embodiment of the application, the fresh air humidity regulator is used for dehumidifying, and the air conditioner is added for dehumidifying together under the condition that the humidity regulating effect of the fresh air humidity regulator is poor, so that the balance of energy saving and dehumidifying speed can be achieved. If the air treatment system directly performs the common dehumidification of the fresh air humidity regulator and the air conditioner at the beginning, although the dehumidification speed can be ensured, the energy consumption can be increased, and if the fresh air humidity regulator can achieve the dehumidification effect, and the air conditioner does not dehumidify, the energy can be saved.
< Common dehumidification Pattern >
Referring to fig. 7, an air conditioner and a fresh air conditioner are turned on, and the fresh air conditioner operates according to a preset default frequency and wind speed in S201.
S202, obtaining target compressor frequency FX2 of the air conditioner according to indoor moisture content dra and indoor set moisture content ds.
In the step, firstly, the indoor required dehumidification Wx2 is calculated according to a formula, and then the target evaporation temperature is obtained by looking up a table, so that the target compressor frequency is obtained.
Where wx2=ginxρ2×|dra-ds|, gin denotes the air volume of the indoor unit, ρ2 denotes the indoor air density.
The memory stores corresponding tables of indoor temperature, humidity, evaporating temperature and dehumidifying amount, and corresponding compressor frequencies at different evaporating temperatures, and the tables are obtained from experimental data.
Therefore, the dehumidification amount Wx2 is calculated first, and the final target compressor frequency FX can be obtained by looking up a table according to the dehumidification amount Wx 2.
S203, controlling the second compressor to operate according to the target compressor frequency FX2, and entering S204 after operating for a preset time t 2.
S204, judging whether the relation between the indoor air moisture content and the indoor set moisture content meets a second preset permission condition, if so, entering S205, turning off the air conditioner, and if not, entering S206, and controlling the second compressor to raise the frequency.
The second preset permission condition is dra-ds-a, and a is a preset value, for example, if dra-ds-1 is satisfied, it indicates that the return air humidity is close to the indoor set humidity, and the air conditioner can not dehumidify any more at this time, and if dra-ds-1 is not satisfied, it indicates that the indoor humidity is still higher than the indoor set humidity, and the air conditioner needs to dehumidify more.
In S205, after the air conditioner is turned off, every preset time t3, the process goes to S207, where it is determined whether the indoor air moisture content is not less than the sum of the indoor set moisture content and the preset allowable value, and if so, the process goes to S208, where the air conditioner is turned on.
Specifically, dra is greater than or equal to ds+a, where a is a preset value, for example, a=1, and if dra is greater than or equal to ds+1, it indicates that the indoor humidity is rising, and exceeds the indoor set humidity, and the air conditioner needs to be turned on at this time.
In a specific application scene, the indoor environment can raise the indoor humidity due to the operations of sudden increase of personnel, clothes washing by users and the like, so that whether the indoor humidity rises or not needs to be detected after the air conditioner is turned off, and the change of the indoor humidity can be responded timely.
In S206, the compressor is up-converted, after a preset time t4, the process returns to S204 to re-determine, and if the result is still not satisfied, the compressor is controlled to continue up-conversion.
< Automatic dehumidification mode >
The system firstly performs a fresh air dehumidification mode, and when the rotation speed of the fresh air blower is reduced to a preset wind speed value in the operation process of the fresh air dehumidification mode, and Dsa is less than or equal to Dsa-1 and is not established, the system automatically enters a common dehumidification mode, and the rotation speed of the fresh air blower is restored to a preset default rotation speed.
The application sets the fresh air dehumidification mode, the common dehumidification mode and the automatic dehumidification mode in the air treatment system, can adapt to various requirements of users, for example, when the indoor needs slight dehumidification (the indoor humidity is not too different from the expected humidity of the users), the fresh air dehumidification mode can be selected, when the indoor needs deep dehumidification (the indoor humidity is too different from the expected humidity of the users), the common dehumidification mode can be selected to accelerate the dehumidification speed, or the users can select automatic dehumidification, and the system automatically judges the dehumidification speed.
According to the application, the fresh air conditioner or the air conditioner is subjected to dehumidification control according to the dehumidification amount, so that the dehumidification efficiency can be improved, and the rapid dehumidification can be realized.
In the application, the fresh air dehumidification mode is carried out when the fresh air humidity regulator can bear the dehumidification amount, and compared with the common dehumidification of the fresh air humidity regulator and an air conditioner, the energy-saving purpose can be achieved.
According to the application, under the condition of relatively large dehumidification amount, the fresh air dehumidifier and the air conditioner are used for jointly dehumidifying, so that the dehumidification speed can be increased.
In the present application, the amount of dehumidification required for the indoor space is estimated based on the indoor air moisture content dra and the indoor set moisture content ds, and the present application can omit the detection device and simplify the system structure, compared to the case where various detection devices such as a human body sensor are required to be provided when the amount of dehumidification is calculated from the indoor moisture load.
In the application, the required dehumidification amount of the indoor space is estimated according to the indoor air moisture content dra and the indoor set moisture content ds, then the target air supply humidity is obtained according to the dehumidification amount, and the fresh air humidity regulator is controlled according to the relation between the current fresh air supply moisture content and the target air supply moisture content, so that the aim of accurate regulation can be achieved.
In the application, when the humidity of the fresh air supply is relatively high, the rotating speed of the fresh air blower is reduced to reduce the air supply quantity of the fresh air, so that the fresh air can be fully absorbed by the absorption component, thereby achieving the purpose of reducing the moisture content of the fresh air supply.
In the application, when the rotating speed of the fresh air blower is reduced to a certain value, if the indoor humidity still does not meet the requirement, the common dehumidification mode is carried out, so that the problem of slow dehumidification speed when the fresh air humidifier is used for dehumidification only can be avoided.
According to the application, a fresh air dehumidification mode, a common dehumidification mode and an automatic dehumidification mode can be realized, and the diversified requirements of users are met.
The terms "comprises," "comprising," and the like are used to specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
Terms such as "unit," "portion," "block," "member" and "module" indicate a unit for processing at least one function or operation. For example, these terms may refer to at least one process processed by at least one piece of hardware, such as a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), at least one piece of software stored in a memory or processor.
The identification code is used for ease of description, but is not intended to illustrate the order of each step. Unless the context clearly indicates otherwise, each step may be implemented in a different order than that shown.
The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. The illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.
The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. The illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.
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| CN110017563A (en) * | 2019-03-28 | 2019-07-16 | 青岛海尔空调电子有限公司 | Dehumidification control method for double-cold source fresh air handling unit |
| CN115234981A (en) * | 2022-07-05 | 2022-10-25 | 青岛海信日立空调系统有限公司 | Air conditioner |
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| CN115654592A (en) * | 2022-10-21 | 2023-01-31 | 珠海格力电器股份有限公司 | Air conditioning apparatus and control method thereof |
| CN115789774A (en) * | 2022-12-30 | 2023-03-14 | 海信（广东）空调有限公司 | Air conditioner and fresh air control method of air conditioner |
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| CN110017563A (en) * | 2019-03-28 | 2019-07-16 | 青岛海尔空调电子有限公司 | Dehumidification control method for double-cold source fresh air handling unit |
| CN115234981A (en) * | 2022-07-05 | 2022-10-25 | 青岛海信日立空调系统有限公司 | Air conditioner |
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