CN114704875A - Air conditioner and control method thereof - Google Patents

Air conditioner and control method thereof Download PDF

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Publication number
CN114704875A
CN114704875A CN202210242541.XA CN202210242541A CN114704875A CN 114704875 A CN114704875 A CN 114704875A CN 202210242541 A CN202210242541 A CN 202210242541A CN 114704875 A CN114704875 A CN 114704875A
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China
Prior art keywords
air
fresh air
humidity
difference
condition
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CN202210242541.XA
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CN114704875B (en
Inventor
李德鹏
黄春强
周学明
黄民柱
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Hisense Guangdong Air Conditioning Co Ltd
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Hisense Guangdong Air Conditioning Co Ltd
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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
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • 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
    • 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
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • 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 discloses an air conditioner and a control method thereof.A fresh air humidifying device is arranged in an outdoor unit of the air conditioner and comprises an outdoor air inlet, a fresh air fan, a humidifying module and an indoor air supply outlet to form a closed airflow channel. In addition, when the indoor environment detection device detects that the preset condition is met, the rotating speed of the fresh air fan is determined according to at least one factor of real-time humidity of the indoor environment and the air quality detection value, the real-time humidity of the indoor environment can reflect indoor humidity content, the air quality detection value can reflect the fresh air amount required by the indoor environment, at least one of the real-time humidity of the indoor environment and the air quality detection value is selected to determine the rotating speed of the fresh air fan, the rotating speed of the fresh air fan is suitable, and air can be purified while the air humidity is increased.

Description

Air conditioner and control method thereof
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a control method thereof.
Background
With the improvement of living standards, the requirements of people on living environment are higher and higher, the air conditioner becomes an indispensable electrical appliance in the life of people, the air conditioner can cause the reduction of air humidity no matter in a heating mode or a cooling mode, the temperature of a compressor cooling module is usually lower than a dew point in the cooling mode, moisture in air can be condensed into water drops, therefore, the air input into a room is very dry, the humidity is very low, when the air conditioner operates in the heating mode, the indoor air is heated to rise, the indoor relative humidity can be reduced, and people stay in an air conditioning room for a long time, the body can be seriously lack of water, and diseases can be caused. Most of the existing household air conditioners do not have a humidification control function, particularly when heating, the indoor relative humidity is low due to the rise of the room temperature, the air conditioners cannot humidify, the indoor air is quite dry, the feeling is very uncomfortable, and the health of a human body is not facilitated. Although individual household air conditioners have the function of humidification control, due to the limitation of the principle, ideal humidification effect is difficult to achieve.
Disclosure of Invention
An object of an embodiment of the present invention is to provide an air conditioner and a control method thereof, which can increase humidity of an indoor environment and improve comfort of a user when the air conditioner is in operation.
To achieve the above object, an embodiment of the present invention provides an air conditioner, including:
an indoor unit for adjusting temperature and humidity of indoor air, the indoor unit including an indoor fan;
the outdoor unit is connected with the indoor unit through an on-line pipe;
the fresh air supply device comprises an indoor air supply outlet, a fresh air fan, a humidification module and an outdoor air inlet, and the fresh air fan is used for enabling outdoor air to sequentially flow through the outdoor air inlet, the humidification module and the indoor air supply outlet;
a control section configured to acquire real-time humidity and air quality detection values of an indoor environment;
calculating the humidity difference between the real-time humidity and a preset target humidity, and calculating the air quality difference between the air quality detection value and a preset air quality standard value;
and when the condition that a preset condition is met is detected, selecting at least one of the humidity difference and the air quality difference to determine the target rotating speed of the fresh air fan, and controlling the fresh air fan to operate according to the target rotating speed.
As an improvement of the above scheme, the preset condition includes at least one of a fresh air humidifying condition and a fresh air supplying condition; then, the determining the target rotation speed of the fresh air fan by selecting at least one of the humidity difference and the air quality difference includes:
when the fresh air humidification condition is met but the fresh air supply condition is not met, determining the target rotating speed of the fresh air fan according to the humidity difference;
when the fresh air supply condition is met but the fresh air humidification condition is not met, determining the target rotating speed of the fresh air fan according to the air quality difference;
and when the fresh air supply condition and the fresh air humidification condition are met, determining the target rotating speed of the fresh air fan according to the humidity difference and the air quality difference.
As an improvement of the above scheme, the humidifying module comprises a humidifier, a water tank and a water inlet valve; the water inlet of the water tank is connected with an external water source, and the water flow entering the water tank is controlled through the water inlet valve; then, upon detecting that a preset condition is satisfied, the control section is further configured to:
and controlling the opening degree of the water inlet valve according to the humidity difference.
As an improvement of the scheme, the humidifying module comprises a wet film, a condensed water evaporator, a coil temperature sensor, a condensed water fan and an air supply heater; one end of the condensate evaporator is connected with a condenser in the air conditioner in series, the other end of the condensate evaporator is connected with a throttling device in the air conditioner, the wet film is arranged on one side of the condensate evaporator, and the coil pipe temperature sensor is arranged on the condensate evaporator; then, upon detecting that a preset condition is satisfied, the control section is further configured to:
acquiring the evaporating temperature detected by the coil pipe temperature sensor and the outdoor temperature detected by an outdoor temperature sensor arranged on the outdoor unit of the air conditioner;
calculating a temperature difference between the evaporating temperature and the outdoor temperature;
and determining the opening increment of an expansion valve in the throttling device according to the temperature difference.
As a refinement of the above, the control section is further configured to:
searching a corresponding target power in a preset power table according to the humidity difference; wherein, the tachometer records the corresponding power of a plurality of groups of the blast heaters when the humidity difference is different;
and controlling the air supply heater to work according to the target power.
As an improvement of the above scheme, the determining the target rotation speed of the fresh air fan according to the humidity difference and the air quality difference includes:
searching a corresponding target rotating speed in a preset rotating speed table according to the humidity difference and the air quality difference; the rotating speed corresponding to the fresh air fan is recorded in the rotating speed table when a plurality of groups are in different humidity difference ranges and air quality difference ranges.
The embodiment of the invention also provides an air conditioner control method, which is suitable for an air conditioner with a fresh air humidifying device in an outdoor unit, wherein the fresh air humidifying device comprises an outdoor air inlet, a fresh air fan, a humidifying module and an outdoor air inlet; then, the air conditioner control method includes:
acquiring real-time humidity and air quality detection values of an indoor environment;
calculating the humidity difference between the real-time humidity and a preset target humidity, and calculating the air quality difference between the air quality detection value and a preset air quality standard value;
and when the condition that a preset condition is met is detected, selecting at least one of the humidity difference and the air quality difference to determine the target rotating speed of the fresh air fan, and controlling the fresh air fan to operate according to the target rotating speed.
As an improvement of the above scheme, the preset condition includes at least one of a fresh air humidifying condition and a fresh air supplying condition; then, the determining the target rotation speed of the fresh air fan by selecting at least one of the humidity difference and the air quality difference includes:
when the fresh air humidification condition is met but the fresh air supply condition is not met, determining the target rotating speed of the fresh air fan according to the humidity difference;
when the fresh air supply condition is met but the fresh air humidification condition is not met, determining the target rotating speed of the fresh air fan according to the air quality difference;
and when the fresh air supply condition and the fresh air humidification condition are met, determining the target rotating speed of the fresh air fan according to the humidity difference and the air quality difference.
As an improvement of the above scheme, the humidifying module comprises a humidifier, a water tank and a water inlet valve; the water inlet of the water tank is connected with an external water source, and the water flow entering the water tank is controlled through the water inlet valve; then, when it is detected that a preset condition is satisfied, the method further includes:
and controlling the opening degree of the water inlet valve according to the humidity difference.
As an improvement of the scheme, the humidifying module comprises a wet film, a condensed water evaporator, a coil temperature sensor, a condensed water fan and an air supply heater; one end of the condensate evaporator is connected with a condenser in the air conditioner in series, the other end of the condensate evaporator is connected with a throttling device in the air conditioner, the wet film is arranged on one side of the condensate evaporator, and the coil pipe temperature sensor is arranged on the condensate evaporator; then, when it is detected that a preset condition is satisfied, the method further includes:
acquiring the evaporating temperature detected by the coil pipe temperature sensor and the outdoor temperature detected by an outdoor temperature sensor arranged on the outdoor unit of the air conditioner;
calculating a temperature difference between the evaporating temperature and the outdoor temperature;
and determining the opening increment of an expansion valve in the throttling device according to the temperature difference.
Compared with the prior art, the air conditioner and the control method thereof disclosed by the embodiment of the invention have the advantages that the fresh air humidifying device is arranged in the outdoor unit of the air conditioner and comprises the outdoor air inlet, the fresh air fan, the humidifying module and the indoor air supply outlet to form a closed air flow channel, and the fresh air flows into the room after passing through the humidifying module by combining the rotation speed control of the fresh air fan, so that the air humidity can be increased, and the comfort level of a user is increased. In addition, when the indoor environment detection device detects that the preset condition is met, the rotating speed of the fresh air fan is determined according to at least one factor of real-time humidity of the indoor environment and the air quality detection value, the real-time humidity of the indoor environment can reflect indoor humidity content, the air quality detection value can reflect the fresh air amount required by the indoor environment, at least one of the real-time humidity of the indoor environment and the air quality detection value is selected to determine the rotating speed of the fresh air fan, the rotating speed of the fresh air fan is suitable, and air can be purified while the air humidity is increased.
Drawings
Fig. 1 is a block diagram of an air conditioner according to an embodiment of the present invention;
fig. 2 is a structural diagram of an air conditioner equipped with a first humidification module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first humidification module on an outdoor unit according to an embodiment of the present invention;
fig. 4 is a structural view of an air conditioner equipped with a second type of humidification module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second humidification module provided in an outdoor unit according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating an air conditioner control method according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating another method for controlling an air conditioner according to an embodiment of the present invention;
fig. 8 is a flowchart of a control method of a second humidification module according to an embodiment of the present invention;
fig. 9 is a control flowchart of the blower heater according to the embodiment of the present invention.
100, an indoor unit; 200. an outdoor unit; 11. a compressor; 12. a four-way valve; 13. a condenser; 14. a throttling device; 15. an evaporator; 16. an indoor fan; 17. an outdoor fan; 18. an indoor air supply outlet; 19. a fresh air fan; 20. a humidifying module; 21. an outdoor air inlet; 201. a humidifier; 202. a water tank; 203. a water inlet valve; 204. wet film forming; 205. a condensate evaporator; 206. a coil temperature sensor; 207. a water condensing fan; 208. an air supply heater.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The air conditioner comprises a refrigerating working condition and a heating working condition. When the air conditioner refrigerates, a refrigerant is firstly changed into high-pressure gas through the compressor, then is condensed and released heat through the outdoor unit heat exchanger (condenser) to be changed into high-pressure liquid, the high-pressure liquid is changed into low-temperature and low-pressure liquid through the throttling device, and is evaporated and absorbed heat through the indoor unit heat exchanger (evaporator) to be changed into low-temperature and low-pressure gas, and finally, the low-temperature and low-pressure gas returns to the compressor. When the air conditioner heats, a refrigerant is firstly changed into high-pressure gas through the compressor, then the high-pressure gas is firstly condensed and released heat through the heat exchanger (condenser) of the indoor unit to be changed into high-pressure liquid, the high-pressure liquid is changed into low-temperature low-pressure liquid through the throttling device, the low-temperature low-pressure liquid is evaporated and absorbed heat through the heat exchanger (evaporator) of the outdoor unit to be changed into low-temperature low-pressure gas, and finally the low-temperature low-pressure gas returns to the compressor.
Referring to fig. 1, fig. 1 is a structural diagram of an air conditioner according to an embodiment of the present invention, the air conditioner according to the embodiment of the present invention includes an indoor unit 100 and an outdoor unit 200, the indoor unit 100 is configured to adjust temperature and humidity of indoor air, the outdoor unit 200 is connected to the indoor unit 100 through a connecting pipe, the outdoor unit 200 is installed outdoors, the indoor unit 100 is installed indoors, a fresh air humidifying device is installed in the outdoor unit 200 and is configured to humidify the outdoor air and then deliver the humidified outdoor air to the indoor, the fresh air humidifying device includes an indoor air supply outlet, a fresh air blower, a humidifying module and an outdoor air inlet, and the fresh air blower is configured to make the outdoor air sequentially flow through the outdoor air inlet, the humidifying module and the indoor air supply outlet; the control part controls the rotating speed of the fresh air fan according to the real-time humidity and air quality detection value of the indoor environment.
The control section is configured to include:
acquiring real-time humidity and air quality detection values of an indoor environment;
calculating the humidity difference between the real-time humidity and a preset target humidity, and calculating the air quality difference between the air quality detection value and a preset air quality standard value;
and when the condition that a preset condition is met is detected, selecting at least one of the humidity difference and the air quality difference to determine the target rotating speed of the fresh air fan, and controlling the fresh air fan to operate according to the target rotating speed.
The preset conditions comprise at least one of fresh air humidifying conditions and fresh air supplying conditions; then, the determining the target rotation speed of the fresh air fan by selecting at least one of the humidity difference and the air quality difference includes:
when the fresh air humidification condition is met but the fresh air supply condition is not met, determining the target rotating speed of the fresh air fan according to the humidity difference;
when the fresh air supply condition is met but the fresh air humidification condition is not met, determining the target rotating speed of the fresh air fan according to the air quality difference;
and when the fresh air supply condition and the fresh air humidification condition are met, determining the target rotating speed of the fresh air fan according to the humidity difference and the air quality difference.
Illustratively, the condition that the fresh air humidification is satisfied indicates that the humidity in the room is not enough at the moment, humidification operation is required, and the air conditioner operates in a fresh air humidification mode at the moment; when the fresh air supply condition is met, the air quality of the room is poor at the moment, the air quality needs to be improved, and the air conditioner operates in a fresh air supply mode at the moment. The fresh air humidification mode and the fresh air supply mode both need to be started the fresh air fan, and when the fresh air humidification mode is not satisfied, the humidification module does not work.
The air conditioner acquires real-time humidity and air quality detection values of an indoor environment after being started, and calculates a humidity difference and an air quality difference. When only meeting the fresh air humidification condition, the humidification module works, the rotating speed of the fresh air fan is adjusted along with the difference value of the real-time humidity and the target humidity of the room, at the moment, the rotating speed of the fresh air fan is in direct proportion to the humidity difference, and the larger the humidity difference is, the higher the rotating speed is. When the fresh air supply condition is only met, the humidification module does not work, the rotating speed of the fresh air fan is adjusted along with the air quality difference between the real-time air quality detection value of the room and the air quality standard value A, at the moment, the rotating speed of the fresh air fan is in direct proportion to the air quality difference, and the larger the air quality difference is, the higher the rotating speed is; the air quality indicator may be CO2Concentration or VOC concentration, or other indicators. When both the air quality and the humidity are satisfied, for example, when the air quality of a room is poor and the humidity is low, the rotating speed of the fresh air fan determines a target rotating speed according to the air quality difference and the humidity difference (a table look-up method is required). And when the humidification stopping condition is met, controlling the fresh air fan to operate for a period of time and then stopping.
Further, an air quality detection device is installed in the indoor unit of the air conditioner and is used for detecting the air quality of the indoor environment, for example, the air quality detection device is a carbon dioxide concentration detector and is used for detecting the concentration of indoor carbon dioxide (CO2), when the concentration of indoor carbon dioxide is high, the indoor air quality is poor, and when the concentration of indoor carbon dioxide is low, the indoor air quality is good. Or the air quality detection device is a Volatile Organic Compound (VOC) concentration detector and is used for detecting the concentration of indoor VOC, when the concentration of the indoor VOC is higher, the indoor air quality is poor, and when the concentration of the indoor VOC is lower, the indoor air quality is good.
Optionally, when the fresh air supply condition and the fresh air humidification condition are satisfied, determining the target rotation speed of the fresh air fan according to the humidity difference and the air quality difference includes:
searching a corresponding target rotating speed in a preset rotating speed table according to the humidity difference and the air quality difference; the rotating speed corresponding to the fresh air fan in different humidity difference ranges and air quality difference ranges is recorded in the tachometer.
Illustratively, the appropriate rotating speed corresponding to the fresh air fan is obtained in advance when different humidity difference ranges and air quality difference ranges are obtained before the air conditioner leaves a factory. Reference may be made to table 1, where Δ H in table 1 is target humidity — real-time humidity; with CO2Concentration example, air quality difference Δ CO2＝CO2Quality detection value-CO2A quality standard value A; h1 > H2 > 0; a1 > A2 > 0; v1 > V2 > V3 > V4. For example, when the humidity difference satisfies H1 & gtΔ H ≧ H2, the air quality difference Δ CO2Satisfies A2 & gtΔ CO2And when the rotating speed is more than or equal to 0, the target rotating speed of the fresh air fan is V2.
TABLE 1 New air blower tachometer with different humidity differences and corresponding air quality differences
Humidity difference delta H \ air quality difference delta CO2 ΔCO2≥A1 A1＞ΔCO2≥A2 A2＞ΔCO2≥0 0＞ΔCO2
ΔH≥H1 V1 V1 V1 V1
H1＞ΔH≥H2 V1 V2 V2 V2
H2＞ΔH≥0 V1 V2 V3 V3
0＞ΔH V1 V2 V3 V4
Optionally, the fresh air humidification conditions include at least one of:
detecting that the local air humidity acquired through networking is less than a preset humidity threshold;
detecting that the current time meets the starting time of a target fresh air humidifying time period preset by a user;
detecting that the current time period meets the starting time of the recommended fresh air humidification time period; the recommended fresh air humidification time period is a humidification time period which is calculated according to historical fresh air humidification time and accords with user habits;
receiving a control instruction which is sent by a user and used for controlling the air conditioner to start a fresh air humidifying mode;
when a humidity sensor installed in the indoor unit detects that the humidity of the current indoor environment meets a preset humidity limit range.
Exemplarily, the control part can acquire the weather forecast through the internet to know the air humidity today, and after the user starts the air conditioner, if the detected humidity is low, the fresh air humidification condition is determined to be satisfied. A user can also set a target fresh air humidification time period by himself, for example, set 9-10 o 'clock in the evening as the target fresh air humidification time period, and when the air conditioner is started and the current time is detected to be 9 o' clock, the fresh air humidification instruction is generated; it can be understood that, if the air conditioner is not started at this time, even if the current time meets the start time of the target fresh air humidification time period, the fresh air humidification instruction will not be generated. The control part can also calculate to obtain a recommended fresh air humidification time period according with the user habit according to the historical fresh air humidification time of the user, the air conditioner records the time of manually controlling fresh air humidification each time by the user, and then big data calculation is carried out to obtain the recommended fresh air humidification time period. The user can send a control instruction to the air conditioner at any time to start the fresh air humidification mode, for example, the control instruction is sent by a remote controller or a voice command. The air conditioner starts a humidity monitoring device after being started, and when the real-time humidity of the indoor environment is detected to be within the humidity limit range, the humidity of the indoor environment is low at the moment, and a fresh air humidifying mode needs to be started. It is worth explaining that the fresh air humidification conditions can be compatible, and a fresh air humidification instruction can be generated to start the humidification mode of the air conditioner as long as one of the fresh air humidification conditions is met.
Optionally, the fresh air distribution condition includes at least one of:
detecting that the number of users in the current indoor environment is always greater than a preset number threshold value within a preset time period;
detecting that the current time meets the starting time of a target fresh air supply time period preset by a user;
detecting that the current time period meets the starting time of the recommended fresh air supply time period; the recommended fresh air supply time period is an air supply time period which is calculated according to historical fresh air supply time and accords with user habits;
receiving a control instruction sent by a user for controlling the air conditioner to start a fresh air supply mode;
and detecting that the air quality detection value of the current indoor environment meets a preset air quality limit range.
Illustratively, after the air conditioner is started, whether the fresh air supply condition is met or not is detected, and once the fresh air supply condition is met, the fresh air supply instruction is generated. The number threshold value can be 3, the preset time quantum is 20min, install infrared detection device on the air conditioner starts in the lump when starting infrared detection device for detect the number of people in the indoor environment, is greater than 3 people when detecting the number of current indoor environment, and after the time exceeded 20min, shows this moment because of the environment is comparatively sealed more the population, and the demand to fresh air is great, can regard as the criterion of new trend air supply condition. A user can also set a target fresh air supply time period by himself, for example, set 9-10 points at night every day as the target fresh air supply time period, and when the air conditioner is started and the current time is detected to be 9 points, the fresh air supply instruction is generated; it can be understood that, if the air conditioner is not started at this time, the fresh air supply instruction will not be generated even if the current time meets the start time of the target fresh air supply time period. The control part can also calculate a recommended fresh air supply time period according with the user habit according to the historical fresh air supply time of the user, the air conditioner records the time of manually controlling fresh air supply by the user every time, and then big data calculation is carried out to obtain the recommended fresh air supply time period. The user can send a control instruction to the air conditioner at any time to start the fresh air supply mode, for example, the control instruction is sent by a remote controller or a voice command. The air conditioner starts an air quality monitoring device after being started, and when the air quality detection value of the indoor environment is detected to be within the air quality limit range, the air quality of the indoor environment is poor at the moment, and a fresh air supply mode needs to be started. It is worth explaining that the fresh air supply conditions can be compatible, and the fresh air supply command can be generated to start the air supply mode of the air conditioner as long as one of the fresh air supply conditions is met.
In the embodiment of the invention, the two humidification modules can be independently arranged on the outdoor unit of the air conditioner, or the outdoor unit of the air conditioner can be simultaneously provided with the two humidification modules, at the moment, two air channels are arranged in the fresh air fan and the outdoor air inlet, the closing and the opening of the two air channels are controlled through the wind shields, when the first humidification module is needed, the air channel corresponding to the first humidification module is controlled to be opened, and the air channel corresponding to the second humidification module is closed at the same time. The specific humidifying module can be selected by a user.
In a first embodiment, referring to fig. 2, fig. 2 is a structural diagram of an air conditioner with a first humidification module according to an embodiment of the present invention, where the air conditioner includes a compressor 11, a four-way valve 12, a condenser 13, a throttling device 14, an evaporator 15, an indoor fan 16, an outdoor fan 17, an indoor air supply outlet 18, a fresh air blower 19, a humidification module 20A, and an outdoor air inlet 21. The evaporator 15 and the indoor fan 16 are provided in the indoor unit, and the compressor 11, the four-way valve 12, the condenser 13, the throttle device 14, and the outdoor fan 17 are provided in the outdoor unit.
For example, during cooling and heating, the refrigerant flows in different directions, and flows through the heat exchanger of the outdoor unit firstly during cooling, wherein the outdoor unit is a condenser and the indoor unit is an evaporator; when heating, the refrigerant flows through the heat exchanger of the indoor unit, the indoor unit is a condenser, and the outdoor unit is an evaporator. When the air conditioner is in different states of cooling and heating, the flow direction of the refrigerant can be changed by the air conditioner through the four-way valve. If the four-way valve is not arranged, the air conditioner can only realize single refrigeration or heating, and cold and hot switching cannot be realized.
The structure of the first humidification module in the outdoor unit 200 can be seen in fig. 3, wherein the humidification module 20A comprises a humidifier 201, a water tank 202 and a water inlet valve 203; wherein, the water inlet of the water tank 202 is connected with an external water source, and the water flow entering the water tank 202 is controlled by the water inlet valve 203; then, upon detecting that a preset condition is satisfied, the control section is further configured to:
controlling the opening degree of the water inlet valve 203 according to the humidity difference.
Illustratively, the opening of the water inlet valve is proportional to the humidity difference. The water tank 202 is arranged on the upper part or the periphery of the humidifier 201, and the humidifier 201 is generally a wet film and can also be an ultrasonic wave or electric heating device which can generate moisture; fresh air enters from the outdoor air inlet 21 under the action of the fresh air fan 19, flows through the humidifier 201, increases the air humidity of the fresh air, and is conveyed to the indoor space through the indoor air supply outlet 18.
In a second embodiment, referring to fig. 4, fig. 4 is a structural diagram of an air conditioner with a second humidification module according to an embodiment of the present invention, where the air conditioner includes a compressor 11, a four-way valve 12, a condenser 13, a throttling device 14, an evaporator 15, an indoor fan 16, an outdoor fan 17, an indoor air supply outlet 18, a fresh air blower 19, a humidification module 20B, and an outdoor air inlet 21.
As shown in fig. 5, the structure of the second humidification module in the outdoor unit 200 is schematic, and the humidification module 20B includes a wet film 204, a condensate evaporator 205, a coil temperature sensor 206, a condensate fan 207, and a supply air heater 208; wherein, one end of the condensed water evaporator 205 is connected in series with the condenser 13 in the air conditioner, the other end of the condensed water evaporator 205 is connected with the throttling device 14 in the air conditioner, the wet film 204 is arranged at one side of the condensed water evaporator 205, and the coil temperature sensor 206 is arranged on the condensed water evaporator 205; then, upon detecting that a preset condition is satisfied, the control section is further configured to:
acquiring the evaporating temperature detected by the coil temperature sensor 206 and the outdoor temperature detected by the outdoor temperature sensor arranged on the outdoor unit of the air conditioner;
calculating a temperature difference between the evaporating temperature and the outdoor temperature;
and determining the opening increment of an expansion valve in the throttling device according to the temperature difference.
Illustratively, the condensate evaporator 205 and the condensate fan 207 form an independent air duct system, and a refrigerant enters the condensate evaporator 205 after passing through the throttling device 14 during heating, and is subjected to heat dissipation and evaporation by the condensate fan 207 to generate condensate. The wet film 204, the air supply heater 208 and the fresh air fan 19 form another independent air duct system, the wet film 204 is used for adsorbing the water volume separated out by the condensate evaporator 205, and the water volume is vaporized under the action of the air supply heater 208 and the fresh air fan 19 and then volatilized into extremely small water molecules which are conveyed to the indoor side, so that the effect of fresh air humidification is achieved. The throttling device 14 is switched to adjust according to the difference between the evaporation temperature (collected by a coil temperature sensor) and the dew point temperature (collected by an outdoor temperature and humidity sensor) of the condensate evaporator. The expansion valve target opening degree ST1 is ST0+ Δ ST; ST1 denotes a target opening degree of the expansion valve; ST0 is the current opening degree of the expansion valve; Δ ST is the expansion valve opening degree increment per unit time interval, and is determined according to table 1.Δ TZ is the evaporation temperature-dew point temperature of the condensate evaporator; t1 > 0 > T3; b1 > B2 > 0 > B3.
TABLE 2 expansion valve opening increment per unit time interval
△TZ △ST
△TZ≥T1 B1
T1＞△TZ≥0 B2
0＞△TZ＞T3 0
T3≥△TZ B3
Optionally, the control section is further configured to:
searching a corresponding target power in a preset power table according to the humidity difference; wherein, the tachometer records the corresponding power of the blast heater 208 when a plurality of groups have different humidity differences;
the supply air heater 208 is controlled to operate at the target power.
For example, after the fresh air fan 19 is started, the supply air heater 208 is started at the same time, and the power of the supply air heater 21 may be specifically controlled according to the humidity difference, the power of the supply air heater 21 is proportional to the difference, and the larger the difference between the humidity of the outdoor environment and the target humidity is, the larger the power of the supply air heater 21 is.
Compared with the prior art, the air conditioner disclosed by the embodiment of the invention has the advantages that the fresh air humidifying device is arranged in the outdoor unit of the air conditioner and comprises the outdoor air inlet, the fresh air fan, the humidifying module and the indoor air supply outlet to form a closed air flow channel, and the fresh air flows into the room after passing through the humidifying module by combining the rotation speed control of the fresh air fan, so that the air humidity can be increased, and the comfort level of a user is increased. In addition, when the indoor environment detection device detects that the preset condition is met, the rotating speed of the fresh air fan is determined according to at least one factor of real-time humidity of the indoor environment and the air quality detection value, the real-time humidity of the indoor environment can reflect indoor humidity content, the air quality detection value can reflect the fresh air amount required by the indoor environment, at least one of the real-time humidity of the indoor environment and the air quality detection value is selected to determine the rotating speed of the fresh air fan, the rotating speed of the fresh air fan is suitable, and air can be purified while the air humidity is increased.
Referring to fig. 6, fig. 6 is a flowchart of an air conditioner control method according to an embodiment of the present invention, where the air conditioner control method is applied to an air conditioner having an outdoor unit with a fresh air humidifying device, and the air conditioner according to the embodiment of the present invention includes an outdoor unit and an indoor unit, and the indoor unit is used to adjust the temperature and humidity of indoor air; the outdoor unit is connected with the indoor unit through an online pipe, the outdoor unit is installed outdoors, the indoor unit is installed indoors, a fresh air humidifying device is installed in the outdoor unit and used for humidifying outdoor air and then conveying the humidified outdoor air to the indoor space, the fresh air humidifying device comprises an outdoor air inlet, a fresh air fan, a humidifying module and an outdoor air inlet, and the fresh air fan is used for enabling the outdoor air to sequentially flow through the outdoor air inlet, the humidifying module and the indoor air supply outlet; then, the air conditioner control method may be implemented by a control part in the air conditioner, including steps S1 to S3:
s1, acquiring real-time humidity and air quality detection values of the indoor environment;
s2, calculating the humidity difference between the real-time humidity and the preset target humidity, and calculating the air quality difference between the air quality detection value and the preset air quality standard value;
and S3, when the condition that a preset condition is met is detected, selecting at least one of the humidity difference and the air quality difference to determine the target rotating speed of the fresh air fan, and controlling the fresh air fan to operate according to the target rotating speed.
Referring to fig. 7, fig. 7 is a flowchart of another air conditioner control method according to an embodiment of the present invention, where the preset condition includes at least one of a fresh air humidification condition and a fresh air supply condition; then, the step of determining the target rotation speed of the fresh air fan by selecting at least one of the humidity difference and the air quality difference includes steps S31 to S33:
s31, when the fresh air humidification condition is met but the fresh air supply condition is not met, determining the target rotating speed of the fresh air fan according to the humidity difference;
s32, when the fresh air supply condition is met but the fresh air humidification condition is not met, determining the target rotating speed of the fresh air fan according to the air quality difference;
and S33, determining the target rotating speed of the fresh air fan according to the humidity difference and the air quality difference when the fresh air supply condition and the fresh air humidification condition are met.
Illustratively, the condition that the fresh air humidification is satisfied indicates that the humidity in the room is not enough at the moment, humidification operation is required, and the air conditioner operates in a fresh air humidification mode at the moment; when the fresh air supply condition is met, the air quality of the room is poor at the moment, the air quality needs to be improved, and the air conditioner operates in a fresh air supply mode at the moment. The fresh air humidification mode and the fresh air supply mode both need to be started the fresh air fan, and when the fresh air humidification mode is not satisfied, the humidification module does not work.
The air conditioner acquires real-time humidity and air quality detection values of an indoor environment after being started, and calculates a humidity difference and an air quality difference. When the fresh air humidifying condition is only met, the humidifying module works, the rotating speed of the fresh air fan is adjusted along with the difference value between the real-time humidity of the room and the target humidity, at the moment, the rotating speed of the fresh air fan is in direct proportion to the humidity difference, and the larger the humidity difference is, the higher the rotating speed is. When the fresh air supply condition is only met, the humidification module does not work, the rotating speed of the fresh air fan is adjusted along with the air quality difference between the real-time air quality detection value of the room and the air quality standard value A, at the moment, the rotating speed of the fresh air fan is in direct proportion to the air quality difference, and the larger the air quality difference is, the higher the rotating speed is; the air quality indicator may be CO2Concentration or VOC concentration, or other indicators. When both the air quality and the humidity are satisfied, for example, when the air quality of a room is poor and the humidity is low, the rotating speed of the fresh air fan determines a target rotating speed according to the air quality difference and the humidity difference (a table look-up method is required). When the condition of stopping humidification is satisfied, controlAnd stopping the fresh air fan after the fresh air fan runs for a period of time.
Further, an air quality detection device is installed in the indoor unit of the air conditioner and is used for detecting the air quality of the indoor environment, for example, the air quality detection device is a carbon dioxide concentration detector and is used for detecting the concentration of indoor carbon dioxide (CO2), when the concentration of indoor carbon dioxide is high, the indoor air quality is poor, and when the concentration of indoor carbon dioxide is low, the indoor air quality is good. Or the air quality detection device is a Volatile Organic Compound (VOC) concentration detector and is used for detecting the indoor VOC concentration, when the indoor VOC concentration is higher, the indoor air quality is poor, and when the indoor VOC is lower, the indoor air quality is good.
Optionally, when the fresh air supply condition and the fresh air humidification condition are satisfied, determining the target rotation speed of the fresh air fan according to the humidity difference and the air quality difference includes:
searching a corresponding target rotating speed in a preset rotating speed table according to the humidity difference and the air quality difference; the rotating speed corresponding to the fresh air fan is recorded in the rotating speed table when a plurality of groups are in different humidity difference ranges and air quality difference ranges.
Optionally, the fresh air humidification conditions include at least one of:
detecting that the local air humidity acquired through networking is smaller than a preset humidity threshold value;
detecting that the current time meets the starting time of a target fresh air humidifying time period preset by a user;
detecting that the current time period meets the starting time of the recommended fresh air humidifying time period; the recommended fresh air humidifying time period is a humidifying time period which is calculated according to historical fresh air humidifying time and accords with user habits;
receiving a control instruction which is sent by a user and used for controlling the air conditioner to start a fresh air humidifying mode;
when a humidity sensor installed in the indoor unit detects that the humidity of the current indoor environment meets a preset humidity limit range.
For example, the control unit may obtain a weather forecast through a network to obtain the humidity of the air today, and after the user turns on the air conditioner, if it is detected that the humidity is low, it is determined that the fresh air humidification condition is satisfied. A user can also set a target fresh air humidification time period by himself, for example, set 9-10 pm points of each day as the target fresh air humidification time period, and when the air conditioner is started and the current time is detected to be 9, the fresh air humidification instruction is generated; it can be understood that, if the air conditioner is not started at this time, even if the current time meets the start time of the target fresh air humidification time period, the fresh air humidification instruction will not be generated. The control part can also calculate a recommended fresh air humidifying time period according with the user habit according to the historical fresh air humidifying time of the user, the air conditioner records the time of manually controlling fresh air humidifying by the user every time, and then big data calculation is carried out to obtain the recommended fresh air humidifying time period. The user can send a control instruction to the air conditioner at any time to start the fresh air humidification mode, for example, the control instruction is sent by a remote controller or a voice command. The air conditioner starts a humidity monitoring device after being started, and when the real-time humidity of the indoor environment is detected to be within the humidity limit range, the humidity of the indoor environment is low at the moment, and a fresh air humidifying mode needs to be started. It is worth explaining that the fresh air humidification conditions can be compatible, and a fresh air humidification instruction can be generated to start the humidification mode of the air conditioner as long as one of the fresh air humidification conditions is met.
Optionally, the fresh air distribution condition includes at least one of:
detecting that the number of users in the current indoor environment is always greater than a preset number threshold value within a preset time period;
detecting that the current time meets the starting time of a target fresh air supply time period preset by a user;
detecting that the current time period meets the starting time of the recommended fresh air supply time period; the recommended fresh air supply time period is an air supply time period which is calculated according to historical fresh air supply time and accords with user habits;
receiving a control instruction which is sent by a user and used for controlling the air conditioner to start a fresh air supply mode;
and detecting that the air quality detection value of the current indoor environment meets a preset air quality limit range.
Illustratively, after the air conditioner is started, whether the fresh air supply condition is met or not is detected, and once the fresh air supply condition is met, the fresh air supply instruction is generated. The number threshold value can be 3, the preset time quantum is 20min, install infrared detection device on the air conditioner starts in the lump when starting infrared detection device for detect the number of people in the indoor environment, is greater than 3 people when detecting the number of current indoor environment, and after the time exceeded 20min, shows this moment because of the environment is comparatively sealed more the population, and the demand to fresh air is great, can regard as the criterion of new trend air supply condition. A user can also set a target fresh air supply time period by himself, for example, set 9-10 o 'clock in the evening of each day as the target fresh air supply time period, and when the air conditioner is started and the current time is detected to be 9 o' clock, the fresh air supply instruction is generated; it can be understood that, if the air conditioner is not started at this time, the fresh air supply instruction will not be generated even if the current time meets the start time of the target fresh air supply time period. The control part can also calculate a recommended fresh air supply time period according with the user habit according to the historical fresh air supply time of the user, the air conditioner records the time of manually controlling fresh air supply by the user every time, and then big data calculation is carried out to obtain the recommended fresh air supply time period. The user can send a control instruction to the air conditioner at any time to start the fresh air supply mode, for example, the control instruction is sent by a remote controller or a voice command. The air conditioner starts an air quality monitoring device after being started, and when the air quality detection value of the indoor environment is detected to be within the air quality limit range, the air quality of the indoor environment is poor at the moment, and a fresh air supply mode needs to be started. It is worth explaining that the above fresh air supply division conditions can be compatible, and the fresh air supply command can be generated to start the air supply mode of the air conditioner as long as one of the fresh air supply conditions is met.
In the embodiment of the invention, the two types of humidification modules are included, the two types of humidification modules can be separately arranged on the outdoor unit of the air conditioner, or the outdoor unit of the air conditioner can be simultaneously provided with the two types of humidification modules, at this time, two air channels are arranged in the fresh air fan and the outdoor air inlet, the closing and opening of the two air channels are controlled through the wind shields, when the first type of humidification module is needed, the air channel corresponding to the first type of humidification module is controlled to be opened, and the air channel corresponding to the second type of humidification module is closed at the same time. The specific humidifying module can be selected by a user.
In a first embodiment, the humidification module comprises a humidifier, a water tank, and a water inlet valve; the water inlet of the water tank is connected with an external water source, and the water flow entering the water tank is controlled through the water inlet valve; then, when it is detected that the preset condition is met, the method further includes:
and controlling the opening degree of the water inlet valve according to the humidity difference.
Illustratively, the opening of the water inlet valve is proportional to the humidity difference. The water tank is arranged at the upper part or the periphery of the humidifier, the humidifier is generally a wet film, and can also be an ultrasonic wave or electric heating device which can generate moisture; fresh air enters from the outdoor air inlet under the action of the fresh air fan, flows through the humidifier, increases the air humidity of the fresh air, and is conveyed indoors through the indoor air supply outlet.
In a second implementation manner, referring to fig. 8, fig. 8 is a flowchart of a control method of a second humidification module provided by an embodiment of the present invention, where the humidification module includes a wet film, a condensate evaporator, a coil temperature sensor, a condensate fan, and a supply air heater; one end of the condensate evaporator is connected with a condenser in the air conditioner in series, the other end of the condensate evaporator is connected with a throttling device in the air conditioner, the wet film is arranged on one side of the condensate evaporator, and the coil pipe temperature sensor is arranged on the condensate evaporator; then, when it is detected that the preset condition is satisfied, the method further includes steps S311 to S313:
311. acquiring the evaporating temperature detected by the coil pipe temperature sensor and the outdoor temperature detected by an outdoor temperature sensor arranged on the outdoor unit of the air conditioner;
312. calculating a temperature difference between the evaporating temperature and the outdoor temperature;
313. and determining the opening increment of an expansion valve in the throttling device according to the temperature difference.
In an exemplary embodiment, the condensate evaporator and the condensate fan constitute an independent air duct system, and the refrigerant enters the condensate evaporator after passing through the throttling device during heating, and is subjected to heat dissipation and evaporation by the condensate fan to generate condensate. The wet film, the air supply heater and the fresh air fan form another independent air duct system, the wet film is used for adsorbing the water amount precipitated by the condensate evaporator, and the water amount is vaporized under the action of the air supply heater and the fresh air fan to volatilize into extremely small water molecules and then conveyed to the indoor side, so that the effect of fresh air humidification is achieved. And the throttling device is switched to adjust according to the difference between the evaporation temperature (acquired by a coil pipe temperature sensor) and the dew point temperature (acquired by an outdoor temperature and humidity sensor) of the condensate evaporator.
Referring to fig. 9, fig. 9 is a control flowchart of the blower heater according to the embodiment of the present invention. Optionally, the air conditioner control method further includes steps S314 to S315:
s314, searching a corresponding target power in a preset power table according to the humidity difference; wherein, the tachometer records the corresponding power of a plurality of groups of the blast heaters when the humidity difference is different;
and S315, controlling the air supply heater to work according to the target power.
For example, after the fresh air fan is started, the supply air heater is started, specifically, the power of the supply air heater may be controlled according to the humidity difference, the power of the supply air heater is proportional to the difference, and the larger the difference between the humidity of the outdoor environment and the target humidity is, the larger the power of the supply air heater is.
Compared with the prior art, the air conditioner control method disclosed by the embodiment of the invention has the advantages that the fresh air humidifying device is arranged in the outdoor unit of the air conditioner and comprises the outdoor air inlet, the fresh air fan, the humidifying module and the indoor air supply outlet to form a closed airflow channel, and the fresh air flows into the room after passing through the humidifying module by combining the rotation speed control of the fresh air fan, so that the air humidity can be increased, and the comfort level of a user is increased. In addition, when the indoor environment detection device detects that the preset condition is met, the rotating speed of the fresh air fan is determined according to at least one factor of real-time humidity of the indoor environment and the air quality detection value, the real-time humidity of the indoor environment can reflect indoor humidity content, the air quality detection value can reflect the fresh air amount required by the indoor environment, at least one of the real-time humidity of the indoor environment and the air quality detection value is selected to determine the rotating speed of the fresh air fan, the rotating speed of the fresh air fan is suitable, and air can be purified while the air humidity is increased.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. An air conditioner, comprising:
an indoor unit for adjusting temperature and humidity of indoor air, the indoor unit including an indoor fan;
the outdoor unit is connected with the indoor unit through an on-line pipe;
the fresh air supply device comprises an indoor air supply outlet, a fresh air fan, a humidification module and an outdoor air inlet, and the fresh air fan is used for enabling outdoor air to sequentially flow through the outdoor air inlet, the humidification module and the indoor air supply outlet;
a control section configured to acquire real-time humidity and air quality detection values of an indoor environment;
calculating the humidity difference between the real-time humidity and a preset target humidity, and calculating the air quality difference between the air quality detection value and a preset air quality standard value;
and when the condition that a preset condition is met is detected, selecting at least one of the humidity difference and the air quality difference to determine the target rotating speed of the fresh air fan, and controlling the fresh air fan to operate according to the target rotating speed.
2. The air conditioner of claim 1, wherein the preset condition includes at least one of a fresh air humidification condition and a fresh air supply condition; then, the determining the target rotation speed of the fresh air fan by selecting at least one of the humidity difference and the air quality difference includes:
when the fresh air humidification condition is met but the fresh air supply condition is not met, determining the target rotating speed of the fresh air fan according to the humidity difference;
when the fresh air supply condition is met but the fresh air humidification condition is not met, determining the target rotating speed of the fresh air fan according to the air quality difference;
and when the fresh air supply condition and the fresh air humidification condition are met, determining the target rotating speed of the fresh air fan according to the humidity difference and the air quality difference.
3. The air conditioner of claim 1, wherein the humidification module comprises a humidifier, a water tank, and a water inlet valve; the water inlet of the water tank is connected with an external water source, and the water flow entering the water tank is controlled through the water inlet valve; then, upon detecting that a preset condition is satisfied, the control section is further configured to:
and controlling the opening degree of the water inlet valve according to the humidity difference.
4. The air conditioner of claim 1, wherein the humidification module comprises a wet film, a condensate evaporator, a coil temperature sensor, a condensate fan, and a blast heater; one end of the condensate evaporator is connected with a condenser in the air conditioner in series, the other end of the condensate evaporator is connected with a throttling device in the air conditioner, the wet film is arranged on one side of the condensate evaporator, and the coil pipe temperature sensor is arranged on the condensate evaporator; then, upon detecting that a preset condition is satisfied, the control section is further configured to:
acquiring the evaporating temperature detected by the coil pipe temperature sensor and the outdoor temperature detected by an outdoor temperature sensor arranged on an outdoor unit of the air conditioner;
calculating a temperature difference between the evaporating temperature and the outdoor temperature;
and determining the opening increment of an expansion valve in the throttling device according to the temperature difference.
5. The air conditioner according to claim 4, wherein the control section is further configured to:
searching corresponding target power in a preset power table according to the humidity difference; wherein, the tachometer records the corresponding power of a plurality of groups of the blast heaters when the humidity difference is different;
and controlling the air supply heater to work according to the target power.
6. The air conditioner of claim 1, wherein said determining a target speed of said fresh air blower based on said difference in humidity and said difference in air quality comprises:
searching a corresponding target rotating speed in a preset rotating speed table according to the humidity difference and the air quality difference; the rotating speed corresponding to the fresh air fan is recorded in the rotating speed table when a plurality of groups are in different humidity difference ranges and air quality difference ranges.
7. A control method of an air conditioner is characterized in that the control method is suitable for the air conditioner with a fresh air humidifying device in an outdoor unit, wherein the fresh air humidifying device comprises an outdoor air inlet, a fresh air fan, a humidifying module and an outdoor air inlet; then, the air conditioner control method includes:
acquiring real-time humidity and air quality detection values of an indoor environment;
calculating the humidity difference between the real-time humidity and a preset target humidity, and calculating the air quality difference between the air quality detection value and a preset air quality standard value;
and when the condition that a preset condition is met is detected, selecting at least one of the humidity difference and the air quality difference to determine the target rotating speed of the fresh air fan, and controlling the fresh air fan to operate according to the target rotating speed.
8. The air conditioner control method according to claim 7, wherein the preset condition includes at least one of a fresh air humidification condition and a fresh air supply condition; then, the determining the target rotation speed of the fresh air fan by selecting at least one of the humidity difference and the air quality difference includes:
when the fresh air humidification condition is met but the fresh air supply condition is not met, determining the target rotating speed of the fresh air fan according to the humidity difference;
when the fresh air supply condition is met but the fresh air humidification condition is not met, determining the target rotating speed of the fresh air fan according to the air quality difference;
and when the fresh air supply condition and the fresh air humidification condition are met, determining the target rotating speed of the fresh air fan according to the humidity difference and the air quality difference.
9. The air conditioner controlling method as claimed in claim 7, wherein the humidifying module includes a humidifier, a water tank and a water inlet valve; the water inlet of the water tank is connected with an external water source, and the water flow entering the water tank is controlled through the water inlet valve; then, when it is detected that a preset condition is satisfied, the method further includes:
and controlling the opening degree of the water inlet valve according to the humidity difference.
10. The air conditioner controlling method as claimed in claim 7, wherein the humidifying module includes a wet film, a condensate evaporator, a coil temperature sensor, a condensate fan, and a blast heater; one end of the condensate evaporator is connected with a condenser in the air conditioner in series, the other end of the condensate evaporator is connected with a throttling device in the air conditioner, the wet film is arranged on one side of the condensate evaporator, and the coil pipe temperature sensor is arranged on the condensate evaporator; then, when it is detected that a preset condition is satisfied, the method further includes:
acquiring the evaporating temperature detected by the coil pipe temperature sensor and the outdoor temperature detected by an outdoor temperature sensor arranged on the outdoor unit of the air conditioner;
calculating a temperature difference between the evaporating temperature and the outdoor temperature;
and determining the opening increment of an expansion valve in the throttling device according to the temperature difference.
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