CN114704875B - Air conditioner and control method thereof - Google Patents

Air conditioner and control method thereof Download PDF

Info

Publication number
CN114704875B
CN114704875B CN202210242541.XA CN202210242541A CN114704875B CN 114704875 B CN114704875 B CN 114704875B CN 202210242541 A CN202210242541 A CN 202210242541A CN 114704875 B CN114704875 B CN 114704875B
Authority
CN
China
Prior art keywords
air
fresh air
humidity
difference
condition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202210242541.XA
Other languages
Chinese (zh)
Other versions
CN114704875A (en
Inventor
李德鹏
黄春强
周学明
黄民柱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Guangdong Air Conditioning Co Ltd
Original Assignee
Hisense Guangdong Air Conditioning Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hisense Guangdong Air Conditioning Co Ltd filed Critical Hisense Guangdong Air Conditioning Co Ltd
Priority to CN202210242541.XA priority Critical patent/CN114704875B/en
Publication of CN114704875A publication Critical patent/CN114704875A/en
Application granted granted Critical
Publication of CN114704875B publication Critical patent/CN114704875B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

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

The invention discloses an air conditioner and a control method thereof, wherein a fresh air humidifying device is arranged in an outdoor unit of the air conditioner, the fresh air humidifying device comprises an outdoor air inlet, a fresh air fan, a humidifying module and an indoor air supply opening, a closed airflow channel is formed, and fresh air flows into a room after passing through the humidifying module by combining with 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 condition that the indoor environment meets the preset condition is detected, the rotating speed of the fresh air fan is determined according to at least one factor of the real-time humidity of the indoor environment and the air quality detection value, the real-time humidity of the indoor environment can reflect the indoor humidity content, the air quality detection value can reflect the fresh air quantity required by the indoor environment, at least one of the real-time humidity 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 proper, and the 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 standard, people have also become higher and higher demands on living environment, and air conditioner has become indispensable electrical apparatus in people's life, and no matter be heating mode or be running in the cooling mode, the air conditioner can both lead to the decline of air humidity, and the temperature of compressor refrigeration module is usually below dew point in the cooling mode, and the moisture in the air can condense into the drop of water, therefore the wind that inputs into the room is very dry, and humidity is very low, and when the air conditioner is running in heating mode, indoor air is through heating temperature rising, can lead to indoor relative humidity to descend, and people stay in the air conditioning room for a long time, can lead to the serious lack of water of health, causes the disease. Most of the existing household air conditioners do not have a humidifying control function, particularly when heating is performed, the indoor relative humidity is low due to the rising of the room temperature, the air conditioners cannot humidify, the indoor air is quite dry, the feeling is uncomfortable, and the health of a human body is not facilitated. Although the individual household air conditioner has a function of humidification control, it is difficult to achieve an ideal humidification effect due to the limitation of the principle.
Disclosure of Invention
The embodiment of the invention aims to provide an air conditioner and a control method thereof, which can increase the humidity of an indoor environment and improve the comfort level of a user when the air conditioner is operated.
To achieve the above object, an embodiment of the present invention provides an air conditioner, including:
the indoor unit is used for adjusting the temperature and the humidity of indoor air and comprises an indoor fan;
the outdoor unit is connected with the indoor unit through a connecting pipe;
the fresh air humidifying device is arranged in the outdoor unit and used for humidifying outdoor air and then conveying the air into a room, and comprises an indoor air supply opening, a fresh air fan, a humidifying module and an outdoor air inlet, wherein 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 opening;
a control section configured to acquire a real-time humidity and an air quality detection value of an indoor environment;
calculating a humidity difference between the real-time humidity and a preset target humidity, and calculating an air quality difference between the air quality detection value and a preset air quality standard value;
when the condition that the preset condition is met is detected, at least one of the humidity difference and the air quality difference is selected to determine the target rotating speed of the fresh air fan, and the fresh air fan is controlled 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; and determining the target rotating speed of the fresh air fan by selecting at least one of the humidity difference and the air quality difference, wherein the method comprises the following steps of:
when the fresh air humidifying condition is met but the fresh air supplying 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 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 the preset condition is satisfied, the control section is further configured to:
and controlling the opening of the water inlet valve according to the humidity difference.
As an improvement of the scheme, the humidifying module comprises a wet film, a condensate evaporator, a coil pipe temperature sensor, a condensate fan and an air supply heater; one end of the condensed water evaporator is connected with a condenser in the air conditioner in series, the other end of the condensed water evaporator is connected with a throttling device in the air conditioner, the wet film is arranged on one side of the condensed water evaporator, and the coil pipe temperature sensor is arranged on the condensed water evaporator; then, upon detecting that the preset condition is satisfied, the control section is further configured to:
Acquiring the evaporating temperature detected by the coil 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 evaporation temperature and the outdoor temperature;
and determining the opening increment of the expansion valve in the throttling device according to the temperature difference.
As an improvement of the above, the control section is further configured to:
searching corresponding target power in a preset power meter according to the humidity difference; wherein, the power meter records the power corresponding to the air supply heater when a plurality of groups of air supply heaters have different humidity differences;
and controlling the air supply heater to work according to the target power.
As an improvement of the above solution, 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 table records the rotating speeds corresponding to the fresh air fans in a plurality of groups in different humidity difference ranges and air quality difference ranges.
The embodiment of the invention also provides a control method of the air conditioner, which is suitable for the air conditioner with the fresh air humidifying device in the 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; the air conditioner control method includes:
Acquiring real-time humidity and air quality detection values of an indoor environment;
calculating a humidity difference between the real-time humidity and a preset target humidity, and calculating an air quality difference between the air quality detection value and a preset air quality standard value;
when the condition that the preset condition is met is detected, at least one of the humidity difference and the air quality difference is selected to determine the target rotating speed of the fresh air fan, and the fresh air fan is controlled 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 selecting at least one of the humidity difference and the air quality difference to determine the target rotation speed of the fresh air fan includes:
when the fresh air humidifying condition is met but the fresh air supplying 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 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 the satisfaction of the preset condition is detected, the method further comprises:
and controlling the opening of the water inlet valve according to the humidity difference.
As an improvement of the scheme, the humidifying module comprises a wet film, a condensate evaporator, a coil pipe temperature sensor, a condensate fan and an air supply heater; one end of the condensed water evaporator is connected with a condenser in the air conditioner in series, the other end of the condensed water evaporator is connected with a throttling device in the air conditioner, the wet film is arranged on one side of the condensed water evaporator, and the coil pipe temperature sensor is arranged on the condensed water evaporator; then, when the satisfaction of the preset condition is detected, the method further comprises:
acquiring the evaporating temperature detected by the coil 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 evaporation temperature and the outdoor temperature;
And determining the opening increment of the 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, the fresh air humidifying device comprises the outdoor air inlet, the fresh air fan, the humidifying module and the indoor air supply opening, a closed air flow channel is formed, and the fresh air is flowed into the room after passing through the humidifying module by combining the rotating 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 condition that the indoor environment meets the preset condition is detected, the rotating speed of the fresh air fan is determined according to at least one factor of the real-time humidity of the indoor environment and the air quality detection value, the real-time humidity of the indoor environment can reflect the indoor humidity content, the air quality detection value can reflect the fresh air quantity required by the indoor environment, at least one of the real-time humidity 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 proper, and the 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 block diagram of an air conditioner when a first humidification module is installed according to an embodiment of the present invention;
Fig. 3 is a schematic structural diagram of a first humidification module provided in an embodiment of the present invention on an outdoor unit;
fig. 4 is a block diagram of an air conditioner provided 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 embodiment of the present invention on an outdoor unit;
fig. 6 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 7 is a flowchart of another air conditioner control method 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 flow chart of the air supply heater according to the embodiment of the present invention.
100 parts of indoor units; 200. an outdoor unit; 11. a compressor; 12. a four-way valve; 13. a condenser; 14. a throttle device; 15. an evaporator; 16. an indoor fan; 17. an outdoor fan; 18. an indoor air supply port; 19. fresh air blower; 20. a humidification module; 21. an outdoor air inlet; 201. a humidifier; 202. a water tank; 203. a water inlet valve; 204. wet film; 205. a condensate evaporator; 206. a coil temperature sensor; 207. a water condensation fan; 208. and an air supply heater.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should 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 the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The air conditioner provided by the embodiment of the application comprises a refrigeration working condition and a heating working condition. When the air conditioner is used for refrigerating, the refrigerant is firstly changed into high-pressure gas through the compressor, then is changed into high-pressure liquid through condensing heat release of the outdoor unit heat exchanger (condenser), the high-pressure liquid is changed into low-temperature low-pressure liquid through the throttling device, and is evaporated and absorbed into low-temperature low-pressure gas through the indoor unit heat exchanger (evaporator), and finally returns to the compressor. When the air conditioner heats, the refrigerant is firstly changed into high-pressure gas through the compressor, then is firstly changed into high-pressure liquid through condensing heat release of the indoor unit heat exchanger (condenser), 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 through the outdoor unit heat exchanger (evaporator) to be changed into low-temperature low-pressure gas, and finally the low-pressure gas is returned to the compressor.
Referring to fig. 1, fig. 1 is a block diagram of an air conditioner according to an embodiment of the present invention, where the air conditioner includes an indoor unit 100 and an outdoor unit 200, the indoor unit 100 is used for adjusting the temperature and humidity of indoor air, the outdoor unit 200 is connected to the indoor unit 100 through a connection 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 used for humidifying outdoor air and then delivering the humidified air into a room, the fresh air humidifying device includes an indoor air supply opening, a fresh air fan, a humidifying module and an outdoor air supply opening, and the fresh air fan is used for sequentially flowing outdoor air through the outdoor air supply opening, the humidifying module and the indoor air supply opening; the control part controls the rotating speed of the fresh air fan according to the real-time humidity and the 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 a humidity difference between the real-time humidity and a preset target humidity, and calculating an air quality difference between the air quality detection value and a preset air quality standard value;
When the condition that the preset condition is met is detected, at least one of the humidity difference and the air quality difference is selected to determine the target rotating speed of the fresh air fan, and the fresh air fan is controlled 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 selecting at least one of the humidity difference and the air quality difference to determine the target rotation speed of the fresh air fan includes:
when the fresh air humidifying condition is met but the fresh air supplying 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.
For example, the satisfaction of the fresh air humidification condition indicates that the humidity in the room is insufficient at this time, and humidification operation is required, and the air conditioner is operated in a fresh air humidification mode at this time; when the fresh air supply condition is met, the condition indicates that the air quality of the room is poor at the moment, and 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 require starting the fresh air fan, and when the fresh air humidification mode is not met, the humidification module does not work.
And after the air conditioner is started, acquiring real-time humidity and air quality detection values of the indoor environment, and calculating humidity difference and air quality difference. When only satisfying the new trend humidification condition, humidification module work, the rotational speed of new trend fan follows room real-time humidity and target humidity's difference and adjusts, at this moment the rotational speed of new trend fan with humidity is poor in direct proportion, and the humidity is poor the bigger, and the rotational speed is higher. When the fresh air supply condition is met, the humidifying 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 and the air quality standard value A of the room, 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 a CO2 concentration or VOC concentration, or other indicator. When both are satisfied, for example, when the air quality of the room is poor and the humidity is low, the rotation speed of the fresh air fan determines a target rotation speed according to the air quality difference and the humidity difference (a table look-up method is needed). And when the humidification stopping condition is met, controlling the fresh air fan to run for a period of time and then stopping.
Further, an air quality detecting 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 detecting device is a carbon dioxide concentration detector and is used for detecting the indoor carbon dioxide (CO 2) concentration, when the indoor carbon dioxide concentration is higher, the indoor air quality is poor, and when the indoor carbon dioxide concentration is lower, the indoor air quality is better. Or the air quality detection device is a Volatile Organic Compound (VOC) concentration detector and is used for detecting the indoor Volatile Organic Compound (VOC) concentration, when the indoor volatile organic compound concentration is higher, the indoor air quality is poorer, and when the indoor volatile organic compound is lower, the indoor air quality is better.
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 table records the rotating speeds corresponding to the fresh air fans in a plurality of groups in different humidity difference ranges and air quality difference ranges.
The proper rotation speeds corresponding to the fresh air fan are obtained in advance in different humidity difference ranges and air quality difference ranges before the air conditioner leaves a factory. Reference may be made to table 1, Δh=target humidity-real-time humidity in table 1; taking the CO2 concentration as an example, the air quality difference Δco2=co2 quality detection value—co2 quality standard value a; h1 > H2 > 0; a1 > A2 > 0; v1 > V2 > V3 > V4. For example, when the humidity difference satisfies H1 & gtdelta H & gtH 2, the air quality difference delta CO2 satisfies A2 & gtdelta CO2 & gt0, and the target rotating speed of the fresh air fan is V2.
Table 1 fresh air fan tachometer corresponding to different humidity differences and air quality differences
Optionally, the fresh air humidifying condition includes at least one of the following:
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 accords with the habit of a user and is calculated according to the historical fresh air humidifying time;
receiving a control instruction which is sent by a user and controls the air conditioner to start a fresh air humidification 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 part can acquire weather forecast through networking to obtain the air humidity today, and after the user turns on the air conditioner, if the detected humidity is lower, the new air humidification condition is judged to be met. The user can also set a target fresh air humidifying time period by himself, for example, 9-10 pm is set as the target fresh air humidifying time period, and when the air conditioner is started and the current time is detected to be 9 pm, the fresh air humidifying instruction is generated; it can be understood that if the air conditioner is not started at this time, the fresh air humidifying command is not generated even if the current time satisfies the starting time of the target fresh air humidifying period. The control part can also calculate and obtain the recommended fresh air humidifying time period which accords with the habit of the user according to the historical fresh air humidifying time of the user, the air conditioner records the time of manually controlling the fresh air humidifying 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 command to the air conditioner at any time to start the fresh air humidification mode, for example, the control command is sent by a remote controller or a voice command. The air conditioner is started up together with the humidity monitoring device after being started up, and when the real-time humidity of the indoor environment is detected to be in the humidity limit range, the fact that the humidity of the indoor environment is lower at the moment is indicated, and a fresh air humidification mode needs to be started. It is worth to say that the above 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 sending and dividing condition comprises at least one of the following:
detecting that the number of users in the current indoor environment is always larger 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 accords with the habit of a user and is calculated according to the historical fresh air supply time;
receiving a control instruction which is sent by a user and controls 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, detecting whether the fresh air supply condition is satisfied, and generating the fresh air supply instruction once the fresh air supply condition is satisfied. The threshold value of the number of people can be 3, the preset time period is 20min, the air conditioner is provided with an infrared detection device, the infrared detection device is started together when the air conditioner is started, the infrared detection device is used for detecting the number of people in the indoor environment, the number of people in the current indoor environment is detected to be more than 3, after the time exceeds 20min, the condition that the environment is closed and the population is more at the moment is indicated, the requirement on fresh air is high, and the condition of fresh air supply can be used as a judgment standard. The user can also set a target fresh air supply time period by himself, for example, 9-10 pm is set as the target fresh air supply time period, and when the air conditioner is started and the current time is detected to be 9 pm, 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 command is not generated even if the current time satisfies the start time of the target fresh air supply time period. The control part can also calculate and obtain the recommended fresh air supply time period which accords with the habit of the user according to the historical fresh air supply time of the user, the air conditioner records the time of manually controlling the fresh air supply of each time, and then big data calculation is carried out to obtain the recommended fresh air supply time period. The user can send a control command to the air conditioner at any time to start the fresh air supply mode, for example, the control command is sent by a remote controller or a voice command. The air conditioner is started up together with the air quality monitoring device after being started up, and when the air quality detection value of the indoor environment is detected to be in 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 to say that the above several fresh air supply conditions can be compatible, and the fresh air supply instruction 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 are independently arranged on the outdoor unit of the air conditioner, or the two humidification modules are simultaneously arranged on the outdoor unit of the air conditioner, 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 shield, and when the first humidification module is needed, the opening of the air channel corresponding to the first humidification module is controlled, and the air channel corresponding to the second humidification module is closed. Which humidification module is specifically used can be selected by the user.
In the first embodiment, referring to fig. 2, fig. 2 is a schematic 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 port 18, a fresh air fan 19, a humidification module 20A, and an outdoor air intake 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, when the outdoor unit is used for refrigerating and heating, the flow direction of the refrigerant is different, and when the outdoor unit is used for refrigerating, the refrigerant flows through the heat exchanger of the outdoor unit, and the outdoor unit is a condenser, and the indoor unit is an evaporator; during heating, the refrigerant flows through the heat exchanger of the indoor unit, and at this time, the indoor unit is a condenser, and the outdoor unit is an evaporator. When the air conditioner is in different states of refrigeration and heating, the flow direction of the refrigerant can be changed through the four-way valve. If the four-way valve is not arranged, the air conditioner can only realize single refrigeration or heating, and can not switch between cold and hot.
Referring to fig. 3, the first humidification module 200 is schematically shown in the outdoor unit 200, and the humidification module 20A includes 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 through the water inlet valve 203; then, upon detecting that the preset condition is satisfied, the control section is further configured to:
and controlling the opening of the water inlet valve 203 according to the humidity difference.
Illustratively, the opening of the inlet valve is proportional to the humidity differential. The water tank 202 is disposed at the upper part or periphery of the humidifier 201, and the humidifier 201 is typically a wet film, or may be an ultrasonic or electric heating device, and may generate moisture; fresh air enters from the outdoor air inlet 21 through the action of the fresh air fan 19, flows through the humidifier 201, increases the air humidity of the fresh air, and is conveyed indoors through the indoor air supply opening 18.
In a second embodiment, referring to fig. 4, fig. 4 is a schematic 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 port 18, a fresh air fan 19, a humidification module 20B, and an outdoor air intake 21.
Referring to fig. 5, the schematic structure of the outdoor unit 200 of the second humidification module is shown, 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 blower heater 208; wherein one end of the condensate evaporator 205 is connected in series with the condenser 13 in the air conditioner, the other end of the condensate evaporator 205 is connected with the throttling device 14 in the air conditioner, the wet film 204 is arranged on one side of the condensate evaporator 205, and the coil temperature sensor 206 is arranged on the condensate evaporator 205; then, upon detecting that the preset condition is satisfied, the control section is further configured to:
acquiring the evaporating temperature detected by the coil temperature sensor 206 and acquiring the outdoor temperature detected by an outdoor temperature sensor provided on the outdoor unit of the air conditioner;
Calculating a temperature difference between the evaporation temperature and the outdoor temperature;
and determining the opening increment of the expansion valve in the throttling device according to the temperature difference.
Illustratively, the condensation evaporator 205 and the condensation fan 207 form an independent air duct system, and the refrigerant enters the condensation evaporator 205 after passing through the throttling device 14 during heating, and the condensation fan 207 radiates heat to evaporate and generate condensation water. 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 quantity separated out by the condensate evaporator 205, and the water quantity is vaporized into tiny water molecules under the action of the air supply heater 208 and the fresh air fan 19 and then is conveyed to the indoor side, so that the effect of fresh air humidification is achieved. The throttle device 14 switches to adjust according to the difference between the evaporation temperature of the condensate evaporator (as sensed by the coil temperature sensor) and the dew point temperature (as sensed by the outdoor temperature and humidity sensor). Expansion valve target opening degree st1=st0+Δst; wherein ST1 is the target opening of the expansion valve; ST0 is the current opening of the expansion valve; delta ST is the expansion valve opening increment per unit time interval, and is determined in accordance with table 1. Δtz = evaporation temperature of the condensate evaporator-dew point temperature; t1 > 0 > T3; b1 > B2 > 0 > B3.
TABLE 2 expansion valve opening delta per unit time interval
Optionally, the control portion is further configured to:
searching corresponding target power in a preset power meter according to the humidity difference; wherein, the power meter records a plurality of groups of power corresponding to the air supply heater 208 under different humidity differences;
the blast heater 208 is controlled to operate at the target power.
For example, the power of the blower heater 21 may be controlled according to the humidity difference by starting the blower heater 208 together with the fresh air fan 19, and the power of the blower heater 21 may be proportional to the difference, and the greater the difference between the humidity of the outdoor environment and the target humidity, the greater the power of the blower heater 21.
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, the fresh air humidifying device comprises the outdoor air inlet, the fresh air fan, the humidifying module and the indoor air supply opening, a closed airflow channel is formed, and the fresh air flows into the room after passing through the humidifying module by combining the rotating 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 condition that the indoor environment meets the preset condition is detected, the rotating speed of the fresh air fan is determined according to at least one factor of the real-time humidity of the indoor environment and the air quality detection value, the real-time humidity of the indoor environment can reflect the indoor humidity content, the air quality detection value can reflect the fresh air quantity required by the indoor environment, at least one of the real-time humidity 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 proper, and the 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 applicable to an air conditioner having a fresh air humidifying device in an outdoor unit, and the air conditioner according to an embodiment of the present invention includes an outdoor unit and an indoor unit, where the indoor unit is used for adjusting the temperature and humidity of indoor air; the outdoor unit is connected with the indoor unit through a connecting pipe, the outdoor unit is arranged outdoors, the indoor unit is arranged indoors, a fresh air humidifying device is arranged in the outdoor unit and used for humidifying outdoor air and then conveying the outdoor air indoors, 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 opening; the air conditioner control method may be executed by a control unit in the air conditioner, and includes steps S1 to S3:
s1, acquiring real-time humidity and air quality detection values of an indoor environment;
s2, calculating a humidity difference between the real-time humidity and a preset target humidity, and calculating an air quality difference between the air quality detection value and a preset air quality standard value;
And S3, when the condition that the preset condition is met is detected, at least one of the humidity difference and the air quality difference is selected to determine the target rotating speed of the fresh air fan, and the fresh air fan is controlled 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 conditions include at least one of a fresh air humidifying condition and a fresh air blowing condition; and then, selecting at least one of the humidity difference and the air quality difference to determine the target rotating speed of the fresh air fan, wherein the method comprises the following steps of S31-S33:
s31, when the fresh air humidifying condition is met but the fresh air supplying 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, 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.
For example, the satisfaction of the fresh air humidification condition indicates that the humidity in the room is insufficient at this time, and humidification operation is required, and the air conditioner is operated in a fresh air humidification mode at this time; when the fresh air supply condition is met, the condition indicates that the air quality of the room is poor at the moment, and 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 require starting the fresh air fan, and when the fresh air humidification mode is not met, the humidification module does not work.
And after the air conditioner is started, acquiring real-time humidity and air quality detection values of the indoor environment, and calculating humidity difference and air quality difference. When only satisfying the new trend humidification condition, humidification module work, the rotational speed of new trend fan follows room real-time humidity and target humidity's difference and adjusts, at this moment the rotational speed of new trend fan with humidity is poor in direct proportion, and the humidity is poor the bigger, and the rotational speed is higher. When the fresh air supply condition is met, the humidifying 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 and the air quality standard value A of the room, 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 a CO2 concentration or VOC concentration, or other indicator. When both are satisfied, for example, when the air quality of the room is poor and the humidity is low, the rotation speed of the fresh air fan determines a target rotation speed according to the air quality difference and the humidity difference (a table look-up method is needed). And when the humidification stopping condition is met, controlling the fresh air fan to run for a period of time and then stopping.
Further, an air quality detecting 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 detecting device is a carbon dioxide concentration detector and is used for detecting the indoor carbon dioxide (CO 2) concentration, when the indoor carbon dioxide concentration is higher, the indoor air quality is poor, and when the indoor carbon dioxide concentration is lower, the indoor air quality is better. Or the air quality detection device is a Volatile Organic Compound (VOC) concentration detector and is used for detecting the indoor Volatile Organic Compound (VOC) concentration, when the indoor volatile organic compound concentration is higher, the indoor air quality is poorer, and when the indoor volatile organic compound is lower, the indoor air quality is better.
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 table records the rotating speeds corresponding to the fresh air fans in a plurality of groups in different humidity difference ranges and air quality difference ranges.
Optionally, the fresh air humidifying condition includes at least one of the following:
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 accords with the habit of a user and is calculated according to the historical fresh air humidifying time;
receiving a control instruction which is sent by a user and controls the air conditioner to start a fresh air humidification 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 part can acquire weather forecast through networking to obtain the air humidity today, and after the user turns on the air conditioner, if the detected humidity is lower, the new air humidification condition is judged to be met. The user can also set a target fresh air humidifying time period by himself, for example, 9-10 pm is set as the target fresh air humidifying time period, and when the air conditioner is started and the current time is detected to be 9 pm, the fresh air humidifying instruction is generated; it can be understood that if the air conditioner is not started at this time, the fresh air humidifying command is not generated even if the current time satisfies the starting time of the target fresh air humidifying period. The control part can also calculate and obtain the recommended fresh air humidifying time period which accords with the habit of the user according to the historical fresh air humidifying time of the user, the air conditioner records the time of manually controlling the fresh air humidifying 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 command to the air conditioner at any time to start the fresh air humidification mode, for example, the control command is sent by a remote controller or a voice command. The air conditioner is started up together with the humidity monitoring device after being started up, and when the real-time humidity of the indoor environment is detected to be in the humidity limit range, the fact that the humidity of the indoor environment is lower at the moment is indicated, and a fresh air humidification mode needs to be started. It is worth to say that the above 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 sending and dividing condition comprises at least one of the following:
detecting that the number of users in the current indoor environment is always larger 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 accords with the habit of a user and is calculated according to the historical fresh air supply time;
receiving a control instruction which is sent by a user and controls 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, detecting whether the fresh air supply condition is satisfied, and generating the fresh air supply instruction once the fresh air supply condition is satisfied. The threshold value of the number of people can be 3, the preset time period is 20min, the air conditioner is provided with an infrared detection device, the infrared detection device is started together when the air conditioner is started, the infrared detection device is used for detecting the number of people in the indoor environment, the number of people in the current indoor environment is detected to be more than 3, after the time exceeds 20min, the condition that the environment is closed and the population is more at the moment is indicated, the requirement on fresh air is high, and the condition of fresh air supply can be used as a judgment standard. The user can also set a target fresh air supply time period by himself, for example, 9-10 pm is set as the target fresh air supply time period, and when the air conditioner is started and the current time is detected to be 9 pm, 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 command is not generated even if the current time satisfies the start time of the target fresh air supply time period. The control part can also calculate and obtain the recommended fresh air supply time period which accords with the habit of the user according to the historical fresh air supply time of the user, the air conditioner records the time of manually controlling the fresh air supply of each time, and then big data calculation is carried out to obtain the recommended fresh air supply time period. The user can send a control command to the air conditioner at any time to start the fresh air supply mode, for example, the control command is sent by a remote controller or a voice command. The air conditioner is started up together with the air quality monitoring device after being started up, and when the air quality detection value of the indoor environment is detected to be in 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 to say that the above several fresh air supply conditions can be compatible, and the fresh air supply instruction 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 are independently arranged on the outdoor unit of the air conditioner, or the two humidification modules are simultaneously arranged on the outdoor unit of the air conditioner, 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 shield, and when the first humidification module is needed, the opening of the air channel corresponding to the first humidification module is controlled, and the air channel corresponding to the second humidification module is closed. Which humidification module is specifically used can be selected by the user.
In a first embodiment, the humidification 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 the satisfaction of the preset condition is detected, the method further comprises:
and controlling the opening of the water inlet valve according to the humidity difference.
Illustratively, the opening of the inlet valve is proportional to the humidity differential. 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, so that moisture can be generated; fresh air enters from the outdoor air inlet through the action of the fresh air fan, flows through the humidifier, increases the air humidity of the fresh air, and is conveyed to the room through the indoor air supply opening.
In a second implementation manner, referring to fig. 8, fig. 8 is a flowchart of a control method of a second humidification module provided in 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 an air supply heater; one end of the condensed water evaporator is connected with a condenser in the air conditioner in series, the other end of the condensed water evaporator is connected with a throttling device in the air conditioner, the wet film is arranged on one side of the condensed water evaporator, and the coil pipe temperature sensor is arranged on the condensed water evaporator; if the preset condition is detected to be met, the method further comprises steps S311-S313:
311. acquiring the evaporating temperature detected by the coil 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 evaporation temperature and the outdoor temperature;
313. and determining the opening increment of the expansion valve in the throttling device according to the temperature difference.
The condensing evaporator and the condensing fan form an independent air duct system, and the refrigerant enters the condensing evaporator after passing through the throttling device during heating, and generates condensed water after radiating and evaporating through the condensing fan. 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 quantity separated out by the condensate evaporator, and the water is volatilized into tiny water molecules after being vaporized under the action of the air supply heater and the fresh air fan and is conveyed to the indoor side, so that the effect of fresh air humidification is achieved. The throttle device is switched to be adjusted according to the difference value 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.
Referring to fig. 9, fig. 9 is a control flow chart of the air supply heater according to the embodiment of the present invention. Optionally, the air conditioner control method further includes steps S314 to S315:
s314, searching corresponding target power in a preset power meter according to the humidity difference; wherein, the power meter records the power corresponding to the air supply heater when a plurality of groups of air supply heaters have different humidity differences;
s315, controlling the air supply heater to work according to the target power.
For example, the power of the air supply heater may be controlled according to the humidity difference after the fresh air fan is started, and the power of the air supply heater is proportional to the difference, and the greater the difference between the humidity of the outdoor environment and the target humidity, the greater the power of the air supply heater.
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, the fresh air humidifying device comprises the outdoor air inlet, the fresh air fan, the humidifying module and the indoor air supply opening, a closed air flow channel is formed, and the fresh air flows into the room after passing through the humidifying module by combining the rotating 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 condition that the indoor environment meets the preset condition is detected, the rotating speed of the fresh air fan is determined according to at least one factor of the real-time humidity of the indoor environment and the air quality detection value, the real-time humidity of the indoor environment can reflect the indoor humidity content, the air quality detection value can reflect the fresh air quantity required by the indoor environment, at least one of the real-time humidity 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 proper, and the air can be purified while the air humidity is increased.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.

Claims (10)

1. An air conditioner, comprising:
the indoor unit is used for adjusting the temperature and the humidity of indoor air and comprises an indoor fan;
the outdoor unit is connected with the indoor unit through a connecting pipe;
the fresh air humidifying device is arranged in the outdoor unit and used for humidifying outdoor air and then conveying the air into a room, and comprises an indoor air supply opening, a fresh air fan, a humidifying module and an outdoor air inlet, wherein 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 opening;
a control section configured to acquire a real-time humidity and an air quality detection value of an indoor environment;
calculating a humidity difference between the real-time humidity and a preset target humidity, and calculating an air quality difference between the air quality detection value and a preset air quality standard value;
when the condition that the preset condition is met is detected, at least one of the humidity difference and the air quality difference is selected to determine the target rotating speed of the fresh air fan, and the fresh air fan is controlled to operate according to the target rotating speed;
Wherein 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; or alternatively, the first and second heat exchangers may be,
the humidifying module comprises a wet film, a condensate evaporator, a coil pipe temperature sensor, a condensate 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 temperature sensor is arranged on the condensate evaporator.
2. The air conditioner of claim 1, wherein the preset conditions include at least one of a fresh air humidification condition and a fresh air supply condition; then, the selecting at least one of the humidity difference and the air quality difference to determine the target rotation speed of the fresh air fan includes:
when the fresh air humidifying condition is met but the fresh air supplying 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 according to claim 1, wherein when the humidification module includes a humidifier, a water tank, and a water inlet valve, the control portion is further configured to, upon detecting that a preset condition is satisfied:
and controlling the opening of the water inlet valve according to the humidity difference.
4. The air conditioner of claim 1, wherein when the humidification module includes a wet film, a condensate evaporator, a coil temperature sensor, a condensate blower, and a supply air heater, the control portion is further configured to, upon detecting that a preset condition is satisfied:
acquiring the evaporating temperature detected by the coil 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 evaporation temperature and the outdoor temperature;
and determining the opening increment of the expansion valve in the throttling device according to the temperature difference.
5. The air conditioner as set forth in claim 4, wherein said control section is further configured to:
Searching corresponding target power in a preset power meter according to the humidity difference; wherein, the power meter records the power corresponding to the air supply heater when a plurality of groups of air supply heaters have different humidity differences;
and controlling the air supply heater to work according to the target power.
6. The air conditioner of claim 1, wherein determining the target rotational speed of the fresh air fan based on the humidity differential and the air quality differential 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 table records the rotating speeds corresponding to the fresh air fans in a plurality of groups in different humidity difference ranges and air quality difference ranges.
7. The control method of the air conditioner is characterized by being suitable for the air conditioner with the fresh air humidifying device in the 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; the air conditioner control method includes:
acquiring real-time humidity and air quality detection values of an indoor environment;
calculating a humidity difference between the real-time humidity and a preset target humidity, and calculating an air quality difference between the air quality detection value and a preset air quality standard value;
When the condition that the preset condition is met is detected, at least one of the humidity difference and the air quality difference is selected to determine the target rotating speed of the fresh air fan, and the fresh air fan is controlled to operate according to the target rotating speed;
wherein 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; or alternatively, the first and second heat exchangers may be,
the humidifying module comprises a wet film, a condensate evaporator, a coil pipe temperature sensor, a condensate 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 temperature sensor is arranged on the condensate evaporator.
8. The air conditioner control method as set forth in claim 7, wherein the preset conditions include at least one of a fresh air humidification condition and a fresh air supply condition; then, the selecting at least one of the humidity difference and the air quality difference to determine the target rotation speed of the fresh air fan includes:
When the fresh air humidifying condition is met but the fresh air supplying 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 control method as set forth in claim 7, wherein when the humidification module includes a humidifier, a water tank, and a water inlet valve, the method further includes, when it is detected that a preset condition is satisfied:
and controlling the opening of the water inlet valve according to the humidity difference.
10. The air conditioner control method as set forth in claim 7, wherein when the humidification module includes a wet film, a condensate evaporator, a coil temperature sensor, a condensate fan, and a supply air heater, the method further includes, upon detecting that a preset condition is satisfied:
acquiring the evaporating temperature detected by the coil 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 evaporation temperature and the outdoor temperature;
and determining the opening increment of the expansion valve in the throttling device according to the temperature difference.
CN202210242541.XA 2022-03-11 2022-03-11 Air conditioner and control method thereof Active CN114704875B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210242541.XA CN114704875B (en) 2022-03-11 2022-03-11 Air conditioner and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210242541.XA CN114704875B (en) 2022-03-11 2022-03-11 Air conditioner and control method thereof

Publications (2)

Publication Number Publication Date
CN114704875A CN114704875A (en) 2022-07-05
CN114704875B true CN114704875B (en) 2023-09-08

Family

ID=82168642

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210242541.XA Active CN114704875B (en) 2022-03-11 2022-03-11 Air conditioner and control method thereof

Country Status (1)

Country Link
CN (1) CN114704875B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115235022B (en) * 2022-08-04 2024-03-29 海信（广东）空调有限公司 Air conditioner and fresh air control method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2522775Y (en) * 2001-11-27 2002-11-27 珠海格力电器股份有限公司 Air conditioner with humidifying and scavenging function
CN106895560A (en) * 2017-02-28 2017-06-27 广州华凌制冷设备有限公司 A kind of air-conditioning system indoor gas quality adjustment method, air-conditioning system
CN109556188A (en) * 2018-11-21 2019-04-02 广东美的制冷设备有限公司 Air conditioner and its control method, control device
CN109827239A (en) * 2019-02-26 2019-05-31 佛山市青鸟设计股份有限公司 A kind of air-conditioning and inletting fresh air method with inletting fresh air function
CN109945392A (en) * 2019-03-31 2019-06-28 广东美的制冷设备有限公司 Progress control method, control device, air conditioner and computer readable storage medium
CN110108000A (en) * 2019-05-29 2019-08-09 广东美的制冷设备有限公司 Control method, air conditioner and the computer readable storage medium of air conditioner
WO2021169390A1 (en) * 2020-02-27 2021-09-02 青岛海尔空调电子有限公司 Air conditioning system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2522775Y (en) * 2001-11-27 2002-11-27 珠海格力电器股份有限公司 Air conditioner with humidifying and scavenging function
CN106895560A (en) * 2017-02-28 2017-06-27 广州华凌制冷设备有限公司 A kind of air-conditioning system indoor gas quality adjustment method, air-conditioning system
CN109556188A (en) * 2018-11-21 2019-04-02 广东美的制冷设备有限公司 Air conditioner and its control method, control device
CN109827239A (en) * 2019-02-26 2019-05-31 佛山市青鸟设计股份有限公司 A kind of air-conditioning and inletting fresh air method with inletting fresh air function
CN109945392A (en) * 2019-03-31 2019-06-28 广东美的制冷设备有限公司 Progress control method, control device, air conditioner and computer readable storage medium
CN110108000A (en) * 2019-05-29 2019-08-09 广东美的制冷设备有限公司 Control method, air conditioner and the computer readable storage medium of air conditioner
WO2021169390A1 (en) * 2020-02-27 2021-09-02 青岛海尔空调电子有限公司 Air conditioning system

Also Published As

Publication number Publication date
CN114704875A (en) 2022-07-05

Similar Documents

Publication Publication Date Title
CN107575994B (en) Method and device for controlling air conditioner and air conditioner
CN106440146A (en) Radiant heating and cooling integrated end device
CN201731567U (en) Multifunctional air conditioning device
CN114704875B (en) Air conditioner and control method thereof
CN106482222A (en) A kind of water-free humidifying air-conditioner and air-humidification method
CN106322538A (en) Water-free humidifying air conditioner and humidifying method
CN113203142A (en) Individual household intelligent fresh air handling unit with self-checking control system
KR100989026B1 (en) Energy-saving thermo-hygrostat with functin of proportional control of condenser fan corresponding to refrigerant pressure and its control method thereof
CN109760704B (en) In-vehicle humidity control method for railway vehicle
CN109631164B (en) Control method of air conditioning unit
CN111578375B (en) Air conditioner and temperature and humidity separate control method thereof
CN104848457A (en) Air conditioner
CN106440049A (en) Water-free humidification air conditioner and humidification method
CN106322537A (en) Waterfree humidification air conditioner and humidification method
CN113865031A (en) Humidity control method and device and air conditioner
CN111089340B (en) Air conditioner and control method thereof
CN111912076A (en) Air conditioner and control method
CN106403107A (en) Air conditioner and control method thereof
CN110715375A (en) Exhaust air heat recovery type fresh air dehumidifying unit and working method thereof
CN206648170U (en) A kind of water-free humidifying air-conditioner
CN211503020U (en) Air conditioner
CN106440117A (en) Waterless humidification module, waterless humidification air conditioner and humidification method
CN112555982A (en) Temperature and humidity double-control air conditioning system
CN206269249U (en) A kind of water-free humidifying air-conditioner
CN206269244U (en) A kind of water-free humidifying air-conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant