CN111895506B - Air conditioner fresh air control method and air conditioner - Google Patents
Air conditioner fresh air control method and air conditioner Download PDFInfo
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- CN111895506B CN111895506B CN202010693086.6A CN202010693086A CN111895506B CN 111895506 B CN111895506 B CN 111895506B CN 202010693086 A CN202010693086 A CN 202010693086A CN 111895506 B CN111895506 B CN 111895506B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 64
- 230000008859 change Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000001276 controlling effect Effects 0.000 description 32
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 238000004378 air conditioning Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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- 238000004659 sterilization and disinfection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
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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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner fresh air control method and an air conditioner, wherein an air detection device is arranged in the air conditioner, a fresh air valve for controlling the air conditioner to execute fresh air circulation is arranged at an air inlet of the air conditioner, an indoor air return valve for controlling the air conditioner to execute indoor air circulation is arranged at an air outlet of the air conditioner, and air quality values of the air conditioner during executing fresh air circulation air supply and the air quality values of the air conditioner during executing indoor air circulation air supply are respectively obtained according to the air detection device and are used as a basis for controlling the opening and closing states of the fresh air valve and/or the indoor air return valve, so that the indoor air quality and the outdoor air quality can be detected by only one air detection device, the equipment system is effectively simplified, and the manufacturing cost of the fresh air conditioner is reduced.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner fresh air control method and an air conditioner.
Background
With the development of socio-economic, the use of air conditioners is becoming more and more common. In order to reduce the heat loss caused by indoor and outdoor ventilation, the air-conditioning room is generally closed, so that the indoor air quality is poor, and if the ventilation is not performed, the air-conditioning room becomes a health threat for people. The method for controlling the air quality is more effective and more convenient, namely, the method is to replace or dilute the indoor air by using the outdoor fresh air, namely, the method is to suck the outdoor fresh air and discharge the indoor dirty air.
Therefore, nowadays when health is more and more emphasized, the fresh air conditioning system starts to enter the market, the fresh air conditioning system can realize indoor and outdoor gas exchange when carrying out temperature regulation indoors, and indoor air is kept fresh and clean. However, the existing fresh air conditioner needs two air detection devices (the indoor unit and the outdoor unit are both provided with the air detection devices) to complete automatic fresh air, and the equipment system is complex and has higher cost.
The prior art therefore remains to be improved.
Disclosure of Invention
The technical problems to be solved by the invention are that a fresh air conditioner in the prior art is complex in equipment system and high in cost, and needs two air detection devices to finish automatic fresh air.
The technical scheme adopted by the invention for solving the problems is as follows:
in a first aspect, an embodiment of the present invention provides an air conditioner fresh air control method, where the method is applied to an air conditioner, and is characterized in that an air detection device is disposed in the air conditioner, a fresh air valve for controlling the air conditioner to perform fresh air circulation air supply is disposed at an air inlet of the air conditioner, and an indoor return air valve for controlling the air conditioner to perform indoor circulation air supply is disposed at an air outlet of the air conditioner, where the method includes:
according to the air detection device, a first air quality value when the air conditioner performs fresh air circulation air supply is obtained, and the first air quality value is used for reflecting the air quality of outdoor fresh air entering the air conditioner from the outside;
according to the air detection device, a second air quality value when the air conditioner performs indoor circulating air supply is obtained, and the second air quality value is used for reflecting the air quality of indoor return air entering the air conditioner from the indoor;
and controlling the opening and closing state of the fresh air valve and/or the indoor air return valve according to the first air quality value and the second air quality value so as to realize automatic fresh air exchange of the air conditioner.
In one embodiment, the obtaining a first air quality value when the air conditioner performs fresh air circulation blowing according to the air detection device includes:
after the air conditioner is started, controlling the fresh air valve to be in an open state so that the air conditioner can execute fresh air circulation air supply;
when the time length of the air conditioner for executing the fresh air circulating air supply meets a first preset time length, the first air quality value is obtained through the air detection device;
storing the acquired first air mass value.
In one embodiment, the obtaining a second air quality value when the air conditioner performs indoor circulation blowing according to the air detection device includes:
after the air detection device acquires a first air quality value, controlling the fresh air valve to be in a closed state, and controlling the indoor return air valve to be in an open state, so that the air conditioner executes indoor circulating air supply;
when the time length of the air conditioner for executing the indoor circulating air supply meets a second preset time length, a second air quality value is obtained through the air detection device;
storing the acquired second air mass value.
In one embodiment, the controlling the opening and closing state of the fresh air valve and/or the indoor return air valve according to the first air quality value and the second air quality value to realize automatic fresh air exchange of the air conditioner includes:
obtaining an air quality difference value according to the first air quality value and the second air quality value;
outputting a fresh air control instruction according to the air quality difference;
and controlling the opening and closing state of the fresh air valve and/or the indoor air return valve according to the fresh air control instruction.
In one embodiment, the outputting a fresh air control command according to the air quality difference includes:
comparing the air quality difference value with a preset air quality threshold value;
if the air quality difference is larger than the air quality threshold, outputting a first fresh air control instruction;
and if the air quality difference is smaller than or equal to the air quality threshold, outputting a second fresh air control instruction.
In an embodiment, the controlling the opening and closing state of the fresh air valve and/or the indoor return air valve according to the fresh air control instruction includes:
when the first fresh air control instruction is received, controlling the indoor air return valve and the fresh air valve to be in an open state according to the first fresh air control instruction, so that outdoor fresh air enters the room through the fresh air valve to perform fresh air circulating air supply, and indoor air performs indoor circulating air supply through the indoor air return valve to realize mixed circulating air supply;
when the second fresh air control instruction is received, the indoor air return valve is controlled to be in an open state and is controlled to be in a closed state according to the second fresh air control instruction, so that indoor air passes through the indoor air return valve to carry out indoor circulating air supply.
In a second aspect, an embodiment of the present invention provides an air conditioner, where the air conditioner includes: an air detection device disposed in a housing of the air conditioner; the fresh air valve is arranged at an air inlet of the air conditioner and used for controlling the air conditioner to execute fresh air circulation; the indoor air return valve is arranged at an air outlet of the air conditioner and used for controlling the air conditioner to execute indoor circulating air supply; a controller disposed within the air conditioner; the controller with empty gas detection surveys the device, the new trend valve reaches indoor return air valve all connects.
In one embodiment, the air conditioner further comprises a fresh air duct arranged in the shell, and the fresh air duct is located between the air inlet and the fresh air valve.
In one embodiment, the air conditioner further includes a cross-flow fan blade disposed in the casing, and the cross-flow fan blade is disposed between the air inlet and the air outlet.
In one embodiment, a filter screen is arranged on the shell of the air conditioner, and the filter screen is arranged at the air inlet.
The invention has the beneficial effects that: according to the embodiment of the invention, an air detection device is arranged in the air conditioner, a fresh air valve for controlling the air conditioner to execute fresh air circulation is arranged at an air inlet of the air conditioner, an indoor air return valve for controlling the air conditioner to execute indoor air circulation supply is arranged at an air outlet of the air conditioner, and the air quality values of the air conditioner during fresh air circulation supply and the air quality value of the air conditioner during indoor air circulation supply are respectively obtained according to the air detection device and are used as the basis for controlling the opening and closing states of the fresh air valve and/or the indoor air return valve, so that the indoor air quality and the outdoor air quality can be detected by only one air detection device, the equipment system is effectively simplified, and the manufacturing cost of the fresh air conditioner is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a specific implementation of an air conditioner fresh air control method according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an internal structure of an air conditioner according to an embodiment of the present invention.
Fig. 3 is a schematic view of an arrangement position of an air detection device according to an embodiment of the present invention.
Fig. 4 is a schematic flow chart illustrating a process of acquiring a first air quality value in the air conditioner fresh air control method according to the embodiment of the present invention.
Fig. 5 is a schematic flow chart illustrating a process of acquiring a second air quality value in the air conditioner fresh air control method according to the embodiment of the present invention.
Fig. 6 is a schematic flow chart illustrating an implementation of automatic fresh air exchange in the air conditioner fresh air control method according to the embodiment of the present invention.
Description of reference numerals: the air detection device comprises an air detection device 10, an air inlet 20, a fresh air valve 30, an air outlet 40, an indoor air return valve 50, a shell 60, a fresh air duct 70 and cross-flow fan blades 80.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
The air sent into the room by the existing fresh air conditioner mainly comprises two parts. One is directly called the new trend from the air of outdoor introduction, and its second is originally existing in the air of indoor and carries out air cycle and call back air, and wherein new trend circulation can generally consume a large amount of energy, and the back air circulation can cause gaseous pollutant's the continuous accumulation. Therefore, the proportion of fresh air and return air needs to be reasonably regulated and controlled, so that the electric energy consumption of an air conditioning system can be reduced and the indoor air quality can be improved. The air conditioner which can realize automatic regulation and control of fresh air circulation and return air circulation is basically characterized in that an air detection device is respectively arranged at an indoor unit and an outdoor unit to respectively detect indoor air quality and outdoor air quality, so that the air conditioner can judge whether the indoor air quality is good or not by comparing the indoor air quality with the outdoor air quality, and further judge whether the fresh air circulation or the return air circulation is needed, namely, the automatic regulation and control of the fresh air circulation and the return air circulation is realized. However, this method requires two air detection devices in the air conditioner, and the equipment system is complex and costly.
In order to solve the problems in the prior art, the invention provides an air conditioner fresh air control method, which simply means that an air detection device is arranged in an air conditioner. In this embodiment, a fresh air valve is disposed at the air inlet of the air conditioner, and an indoor return air valve is disposed at the air outlet of the air conditioner. When the fresh air valve is opened independently, the air conditioner can circularly supply fresh air, and the air quality of outdoor fresh air entering the air conditioner from the outside is detected through the air detection device, so that a first air quality value (namely, the outdoor air quality is reflected) is obtained; when the indoor return air valve is opened independently, indoor circulating air supply can be carried out, and the air quality of the indoor return air entering the air conditioner from the indoor is detected through the air detection device, namely, the second air quality value (namely, the indoor air quality is reflected) is obtained. Therefore, the indoor air quality and the outdoor air quality can be detected by only one air detection device, the equipment system is effectively simplified, and the manufacturing cost of the fresh air conditioner is reduced.
Specifically, as shown in fig. 1, this embodiment provides an air conditioner fresh air control method, where the method is applied to an air conditioner, and the method includes:
and S100, acquiring a first air quality value when the air conditioner performs fresh air circulation air supply according to the air detection device.
In order to achieve the acquisition of the indoor air quality and the outdoor air quality, an air detection device is provided in the air conditioner in advance in the embodiment, as shown in fig. 3, the air detection device is disposed at the air outlet, and the air quality is detected through the air detection device. The air detection device is sensitive in detection, and can accurately acquire the air quality so as to ensure the reliability of a detection result. During specific implementation, the air conditioner can introduce outdoor fresh air by executing fresh air circulating air supply, and a first air quality value can be obtained by detecting the air quality of the outdoor fresh air.
In one implementation, as shown in fig. 4, the step S100 includes the following steps:
and S110, after the air conditioner is started, controlling the fresh air valve to be in an open state so that the air conditioner can execute fresh air circulating air supply.
And step S120, when the time length of the air conditioner for executing the fresh air circulating air supply meets a first preset time length, acquiring the first air quality value through the air detection device.
And step S130, storing the acquired first air quality value.
Specifically, after the air conditioner is started, the air conditioner is controlled to execute fresh air circulating air supply, and the fresh air circulating air supply is realized by controlling the fresh air valve to be in an open state. In one implementation, as shown in fig. 2, when the air conditioner performs the fresh air circulation, the fresh air enters from the air inlet 20 and first enters the fresh air duct 70 through the air inlet 20. When the fresh air valve 30 is opened, the air entering the fresh air duct 70 passes through the fresh air valve 30, enters the heat exchanger for heat exchange, is made into cold air, and then enters the cross-flow fan blade air duct, the cross-flow fan blade 80 is arranged in the cross-flow fan blade air duct, and the refrigerated outdoor fresh air is uniformly exhausted from the air outlet 40 under the action of the cross-flow fan blade 80 and enters the room. In one implementation, the air inlet 20 is provided with a filter screen for filtering air, and the filter screen can effectively filter particulate matters (PM2.5, pollen and the like) in the outdoor air and can effectively perform sterilization treatment on the outdoor air, such as killing microorganisms (bacteria, mold, viruses and the like) in the outdoor air. The filter screen can be a device for filtering and sterilizing such as an IFD (integrated filter and distribution) screen and an HPA (pressurized water reactor) screen.
And when the time length of the air conditioner for executing the fresh air circulating air supply meets a first preset time length. If the time is 10min, at this time, the air conditioner can be guaranteed to be stably operated, the first air quality value is obtained through the air detection device, and the first air quality can reflect the quality of outdoor air entering the room from the outside. And the air detection device records the acquired first air quality value and sends the first air quality value to a preset controller for storage. In one embodiment, an intelligent chip is installed in the controller, and the first air quality value can be stored and analyzed through the intelligent chip.
Because the air conditioner only controls the fresh air valve 30 to be opened when executing fresh air circulation air supply, only outdoor fresh air flows out of the air outlet 40 and enters the room. The indoor atmospheric pressure can be improved to continuous outdoor new trend entering indoor, extrudees indoor original air, then passes through places such as each door and window gap, kitchen guarding's exhaust fan with gaseous exhaust, forms certain pressure-fired air protection, can effectively block external pollution to a certain extent and get into. Therefore, after the air conditioner starts fresh air circulation for air supply, the indoor air quality can be greatly improved.
And step S200, acquiring a second air quality value when the air conditioner performs indoor circulating air supply according to the air detection device.
Specifically, after the air conditioner performs fresh air circulation air supply, the air conditioner is controlled to perform indoor circulation air supply. As shown in fig. 2, when the air conditioner performs the indoor air circulation, indoor air enters the air conditioner from the indoor air return valve 50, passes through the heat exchanger, is made into cold air, enters the air duct of the cross-flow fan blade 80, and is uniformly discharged from the air outlet 40 under the action of the cross-flow fan blade 80, and then returns to the indoor space. After the circulation flow is carried out for a period of time, the indoor temperature is uniform, and the human body feels comfortable.
In one implementation, as shown in fig. 5, the step S200 includes the following steps:
step S210, after the air detection device obtains the first air quality value, controlling the fresh air valve to be in a closed state, and controlling the indoor return air valve 50 to be in an open state, so that the air conditioner performs the indoor air circulation.
Step S220, when the time length for the air conditioner to perform the indoor circulating air supply satisfies a second preset time length, obtaining a second air quality value through the air detection device 10.
Step S230, storing the acquired second air quality value.
Specifically, because the indoor air is generally lower in temperature than the outdoor fresh air, when enough outdoor fresh air is introduced into the room, the indoor air is more energy-saving when the indoor air is used for circulating indoors as the cold air is produced by the indoor air as compared with the cold air produced by the outdoor fresh air and sent into the room. Therefore, when the air detection device acquires the first air quality value, the indoor circulating air supply is executed. The indoor circulating air supply is realized by controlling the fresh air valve 30 to be in a closed state and controlling the indoor return air valve 50 to be in an open state. In the refrigeration mode of the air conditioner, after the air conditioner starts the indoor circulating air supply, the outdoor fresh air is not used for making cold air, but the indoor air is recycled for making cold air, so that the effective energy conservation is realized.
When the time period for the air conditioner to perform the indoor circulating air supply meets a second preset time period, for example, one hour, since the indoor air is continuously circulated and cooled by the air conditioner, the content of various exhaust gases, such as carbon dioxide, in the indoor air is also continuously accumulated, so that the oxygen content of the indoor air is reduced. Therefore, when the time length of the air conditioner performing the indoor circulating air supply meets a second preset time length, a second air quality value is obtained through the air detection device 10, and the second air quality value can reflect the current indoor air quality. And the air detection device 10 records the acquired second air quality value and sends the second air quality value to the controller for storage. In one embodiment, an intelligent chip is installed in the controller, and the second air quality value can be stored and analyzed by the intelligent chip.
After the controller receives the first air quality value and the second air quality value, the first air quality value and the second air quality value need to be combined for analysis, so that the indoor air quality is judged to be good or bad. When the indoor air quality is poor, outdoor fresh air needs to be introduced again to improve the indoor air quality; when the indoor air quality is still good, outdoor fresh air does not need to be introduced, and the indoor air can be continuously subjected to circulating refrigeration so as to realize effective energy conservation. It is necessary to perform different operations according to the analysis result of the indoor air quality. As shown in fig. 1, step S300 is executed to control the opening and closing states of the fresh air valve and/or the indoor return air valve according to the first air quality value and the second air quality value, so as to realize automatic fresh air exchange of the air conditioner.
In one implementation, as shown in fig. 6, the step S300 includes the following steps:
and step S310, obtaining an air quality difference value according to the first air quality value and the second air quality value.
And S320, outputting a fresh air control instruction according to the air quality difference.
And S330, controlling the opening and closing states of the fresh air valve and/or the indoor return air valve according to the fresh air control instruction.
In specific implementation, after the controller acquires the first air quality value and the second air quality value, the first air quality value and the second air quality value are subjected to difference, and the obtained difference value is an air quality difference value which reflects the indoor air quality change condition of the air conditioner after the air conditioner performs indoor circulating air supply for a second preset time. For example, when the air quality difference is large, it indicates that the indoor air quality changes greatly, and fresh air circulation air supply may be required to improve the indoor air quality; when the air quality difference is small, the indoor air quality change is small, and the indoor air quality requirement can be met by continuously performing indoor circulating air supply. Therefore, a fresh air control instruction needs to be output according to the air quality difference to control the opening and closing states of the fresh air valve 30 and/or the indoor return air valve 50, so as to realize automatic fresh air exchange of the air conditioner.
In one implementation, the present embodiment compares the air quality difference value with the air quality threshold, which is preset. When the air quality difference value is larger than the air quality threshold value, the difference between the indoor air quality and the outdoor air quality is larger, so that the current indoor air quality is judged to be poor, and a first fresh air instruction is output; and when the air quality difference is smaller than or equal to the air quality threshold, the difference between the indoor air quality and the outdoor air quality is not large, so that the current indoor air quality is judged to be good, and a second fresh air instruction is output.
Specifically, the first and second air quality values may include a plurality of air quality parameter values, which may include, for example, an oxygen content value, a carbon dioxide content value, a PM2.5 content value, a humidity value. The air quality difference should include differences in air quality parameters of the corresponding type, i.e., an oxygen content difference, a carbon dioxide content difference, a PM2.5 content difference, and a humidity difference. Similarly, the air quality threshold also includes a threshold corresponding to a difference between the air quality parameters of the corresponding types, that is, a threshold of an oxygen content difference, a threshold of a carbon dioxide content difference, a threshold of a PM2.5 content difference, and a threshold of a humidity difference. And if the difference value of any one type of air quality parameter in the air quality difference value is larger than the corresponding threshold value, namely the air quality difference value is larger than the air quality threshold value, outputting a first fresh air instruction. And if the difference values of all kinds of air quality parameters in the air quality difference values are smaller than or equal to the corresponding threshold values, namely the air quality difference values are smaller than or equal to the air quality threshold values, outputting a second fresh air control instruction. And controlling the air conditioner to perform different operations through the first fresh air control instruction and the second fresh air control instruction, so that the air conditioner automatically changes fresh air.
Because the first fresh air control command is generated under the condition that the air quality difference value is larger than the air quality threshold value, aiming at the condition that the indoor air quality is poor, in order to improve the current indoor air quality as soon as possible, the simplest and simplest method is to introduce outdoor fresh air into the room. Therefore, when the controller receives the first fresh air control instruction, the indoor return air valve 50 and the fresh air valve 30 are controlled to be in an open state according to the first fresh air control instruction, so that outdoor fresh air enters the room through the fresh air valve 30 to be circularly supplied with fresh air, and indoor air passes through the indoor return air valve 50 to be circularly supplied with indoor air, so that mixed circular air supply is realized. The fresh outdoor air can continuously dilute the original indoor turbid air when entering, so that the current indoor air quality is effectively improved, for example, the carbon dioxide content is reduced, the oxygen content is increased, and the like; the circulation of the indoor wind can keep the indoor air temperature constant, so that the human body feels comfortable. Because in actual operation, if indoor relatively seals, and introduce outdoor new trend constantly, lead to indoor air atmospheric pressure to be greater than outdoor air atmospheric pressure easily to increase outdoor new trend and get into indoor resistance, lead to indoor outdoor air exchange effect relatively poor, in order to avoid the emergence of above-mentioned condition, in a realization, still can be provided with in the air conditioner and be used for discharging the outdoor exhaust part of indoor air, ventilation part can be effectively when introducing outdoor new trend, with indoor dirty air discharge indoor, thereby improve indoor outdoor air exchange effect.
Since the second fresh air control command is generated when the air quality difference is less than or equal to the air quality threshold, and is for the case that the indoor air quality is good, the indoor air quality does not need to be improved by introducing outdoor fresh air in such a case. When the controller receives the second fresh air control instruction, the outdoor and indoor return air valve 50 is controlled to be in an open state and the fresh air valve 30 is controlled to be in a closed state according to the second fresh air control instruction, so that indoor air passes through the indoor return air valve 50 to be subjected to indoor circulating air supply. Indoor air continuously enters from the indoor air return valve 50, is uniformly discharged from the air outlet 40 after being cooled, and the indoor temperature is kept constant under the circulating action.
In one implementation, after the air detection device 10 first obtains the second air quality value, the step S200 is repeated every preset time period, and the newly obtained second air quality value is stored in the controller to replace the original second air quality value, and then the step S300 is repeated, so that the automatic fresh air function of the air conditioner is realized, the indoor air quality is timely improved, and the indoor comfort and high cleanliness are ensured.
Therefore, according to the embodiment of the invention, the air detection device is arranged in the air conditioner, the fresh air valve for controlling the air conditioner to execute fresh air circulation is arranged at the air inlet of the air conditioner, the indoor air return valve for controlling the air conditioner to execute indoor air circulation is arranged at the air outlet of the air conditioner, and the air quality values of the air conditioner during fresh air circulation air supply execution and the air quality value of the air conditioner during indoor air circulation air supply execution are respectively obtained according to the air detection device and are used as the basis for controlling the opening and closing states of the fresh air valve and/or the indoor air return valve, so that the indoor air quality and the outdoor air quality can be detected by only one air detection device, the equipment system is effectively simplified, and the manufacturing cost of the fresh air conditioner is reduced.
Based on the above embodiment, the present invention further provides an air conditioner, as shown in fig. 2, the air conditioner includes: the air conditioner includes: an air detection device 10 provided in a casing 60 of the air conditioner; a fresh air valve 30 arranged at the air inlet 20 of the air conditioner and used for controlling the air conditioner to execute fresh air circulation; an indoor return air valve 50 arranged at an air outlet 40 of the air conditioner and used for controlling the air conditioner to perform indoor circulating air supply; a controller disposed within the air conditioner; the controller is connected with the air detection device 10, the fresh air valve 30 and the indoor return air valve 50. The air detection device 10 can detect the indoor air quality (i.e. the first air quality value) and the outdoor air quality (the second air quality value), and the controller controls the opening and closing state of the fresh air valve and/or the indoor return air valve according to the detected indoor air quality and outdoor air quality, so that the air conditioner can automatically change fresh air.
In one implementation, as shown in fig. 2, the air conditioner further includes a fresh air duct 70 disposed in the casing 60, and the fresh air duct 70 is located between the air inlet 20 and the fresh air valve 30. In one implementation manner, the air conditioner further includes a cross-flow fan 80 disposed in the casing 60, and the cross-flow fan 80 is disposed between the air inlet 20 and the air outlet 40. In one implementation, a filter screen is disposed on the casing 60 of the air conditioner, and the filter screen is disposed at the air inlet 20.
In summary, in the embodiment of the present invention, an air detection device is disposed in an air conditioner, a fresh air valve for controlling the air conditioner to execute fresh air circulation is disposed at an air inlet of the air conditioner, an indoor return air valve for controlling the air conditioner to execute indoor air circulation is disposed at an air outlet of the air conditioner, and air quality values of the air conditioner during fresh air circulation and during indoor air circulation are respectively obtained according to the air detection device and are used as references for controlling the opening and closing states of the fresh air valve and/or the indoor return air valve, so that the indoor air quality and the outdoor air quality can be detected only by one air detection device, an equipment system is effectively simplified, and the manufacturing cost of the fresh air conditioner is reduced.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. The method for controlling the fresh air of the air conditioner is applied to the air conditioner, and is characterized in that an air detection device is arranged in the air conditioner, a fresh air valve used for controlling the air conditioner to execute fresh air circulating air supply is arranged at an air inlet of the air conditioner, an indoor air return valve used for controlling the air conditioner to execute indoor circulating air supply is arranged at an air outlet of the air conditioner, and the method comprises the following steps:
according to the air detection device, a first air quality value when the air conditioner performs fresh air circulation air supply is obtained, and the first air quality value is used for reflecting the air quality of outdoor fresh air entering the air conditioner from the outside;
according to the air detection device, a second air quality value when the air conditioner performs indoor circulating air supply is obtained, and the second air quality value is used for reflecting the air quality of indoor return air entering the air conditioner from the indoor;
and controlling the opening and closing state of the fresh air valve and/or the indoor air return valve according to the first air quality value and the second air quality value so as to realize automatic fresh air exchange of the air conditioner.
2. The method for controlling fresh air of an air conditioner according to claim 1, wherein the obtaining a first air quality value when the air conditioner performs fresh air circulation according to the air detection device comprises:
after the air conditioner is started, controlling the fresh air valve to be in an open state so that the air conditioner can execute fresh air circulation air supply;
when the time length of the air conditioner for executing the fresh air circulating air supply meets a first preset time length, the first air quality value is obtained through the air detection device;
storing the acquired first air mass value.
3. The fresh air control method of claim 2, wherein the obtaining a second air quality value when the air conditioner performs indoor circulation air supply according to the air detection device comprises:
after the air detection device acquires a first air quality value, controlling the fresh air valve to be in a closed state, and controlling the indoor return air valve to be in an open state, so that the air conditioner executes indoor circulating air supply;
when the time length of the air conditioner for executing the indoor circulating air supply meets a second preset time length, a second air quality value is obtained through the air detection device;
storing the acquired second air mass value.
4. An air conditioner fresh air control method according to claim 1, wherein the controlling of the opening and closing state of the fresh air valve and/or the indoor return air valve according to the first air quality value and the second air quality value to achieve automatic fresh air change of the air conditioner comprises:
obtaining an air quality difference value according to the first air quality value and the second air quality value;
outputting a fresh air control instruction according to the air quality difference;
and controlling the opening and closing state of the fresh air valve and/or the indoor air return valve according to the fresh air control instruction.
5. An air conditioner fresh air control method according to claim 4, wherein the outputting of a fresh air control command according to the air quality difference comprises:
comparing the air quality difference value with a preset air quality threshold value;
if the air quality difference is larger than the air quality threshold, outputting a first fresh air control instruction;
and if the air quality difference is smaller than or equal to the air quality threshold, outputting a second fresh air control instruction.
6. The air conditioner fresh air control method according to claim 5, wherein the controlling the opening and closing state of the fresh air valve and/or the indoor return air valve according to the fresh air control command comprises:
when the first fresh air control instruction is received, controlling the indoor air return valve and the fresh air valve to be in an open state according to the first fresh air control instruction, so that outdoor fresh air enters the room through the fresh air valve to perform fresh air circulating air supply, and indoor air performs indoor circulating air supply through the indoor air return valve to realize mixed circulating air supply;
when the second fresh air control instruction is received, the indoor air return valve is controlled to be in an open state and is controlled to be in a closed state according to the second fresh air control instruction, so that indoor air passes through the indoor air return valve to carry out indoor circulating air supply.
7. An air conditioner, characterized in that the air conditioner comprises: an air detection device disposed in a housing of the air conditioner; the fresh air valve is arranged at an air inlet of the air conditioner and used for controlling the air conditioner to execute fresh air circulation; the indoor air return valve is arranged at an air outlet of the air conditioner and used for controlling the air conditioner to execute indoor circulating air supply; a controller disposed within the air conditioner; the controller with empty gas detection surveys the device, the new trend valve reaches indoor return air valve all connects.
8. The air conditioner of claim 7, further comprising a fresh air duct disposed within the housing, the fresh air duct being positioned between the air inlet and the fresh air valve.
9. The air conditioner of claim 7, further comprising a cross-flow fan disposed within the housing, the cross-flow fan disposed between the air inlet and the air outlet.
10. The air conditioner according to claim 7, wherein a filter screen is provided on a casing of the air conditioner, the filter screen being provided at the air inlet.
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Effective date of registration: 20231206 Address after: 430000, No. 9 Tuanjie Street, Dongxihu District, Wuhan City, Hubei Province Patentee after: TCL AIR CONDITIONER WUHAN Co.,Ltd. Address before: 528427 No. 59 Nantou Avenue West, Nantou Town, Zhongshan City, Guangdong Province Patentee before: TCL AIR CONDITIONER (ZHONGSHAN) Co.,Ltd. |