CN111256316A - Air conditioner and control method thereof - Google Patents

Air conditioner and control method thereof Download PDF

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Publication number
CN111256316A
CN111256316A CN202010091262.9A CN202010091262A CN111256316A CN 111256316 A CN111256316 A CN 111256316A CN 202010091262 A CN202010091262 A CN 202010091262A CN 111256316 A CN111256316 A CN 111256316A
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China
Prior art keywords
deviation
degree
concentration
fresh air
purification system
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Chinese (zh)
Inventor
王宏超
张晋
王军
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Hisense Shandong Air Conditioning Co Ltd
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Hisense Shandong Air Conditioning Co Ltd
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Priority to CN202010091262.9A priority Critical patent/CN111256316A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/64—Airborne particle content
    • 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
    • F24F2110/70—Carbon dioxide
    • 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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  • 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)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner and a control method thereof, relates to the technical field of air conditioners, and can improve the indoor air quality and improve the use experience of users. The air conditioner includes: new trend system, clean system, be used for detecting CO2A first detection device for concentration, a second detection device for detecting PM2.5 concentration and a controller for acquiring CO2Concentration and PM2.5 concentration, and calculating CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2According to Q1And Q2The opening sequence and the running time of the fresh air system and the purification system are controlled by the size of the air inlet pipe. The control method comprises the following steps: in a first determination mode, Q is obtained1And Q2(ii) a Respectively judge Q1And Q2Size of (2), Q1Not less than 1 and Q2When the frequency is more than or equal to 1, entering a first alternative mode; in a first alternate mode, Q is determined1And Q2Size of (2), Q1≤Q2In time, the purification system T is operated1After a certain duration, the first decision mode, Q, is re-run1＞Q2In time, the fresh air system T is operated2And after the time length is long, the first judgment mode is operated again. The invention is used for regulating indoor temperature and air quality.

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
Along with the development of the technology, the functions of the air conditioner are gradually enriched, and partial air conditioners have a fresh air function and a purification function besides a heat exchange function. The air conditioner is provided with a purification system for reducing the concentration of indoor PM2.5 and a purification system for reducing indoor CO on the basis of a heat exchange system2Fresh air system of concentration. Because the air conditioner has limited internal space, the fresh air system and the purification system share one fan and one air duct, so that the fresh air system and the purification system cannot run simultaneously. In addition, the air conditioner is also provided with a first detection device for detecting PM2.5 concentration, and a second detection device for detecting CO2And a second detection device for concentration.
The prior art provides a control method based on the air conditioner, when the concentration of PM2.5 is greater than a first threshold value, and CO is present2When the concentration is less than a second threshold value, starting a purification function; when the concentration of PM2.5 is less than a first threshold value, and CO2When the concentration is greater than a second threshold value, starting a fresh air function; when the concentration of PM2.5 is greater than a first threshold value, and CO2When the concentration is greater than a second threshold value; starting a purification function until the concentration of PM2.5 is less than a first threshold value, and then starting a fresh air function; or the fresh air function is started firstly until the CO is reached2And when the concentration is less than the second threshold value, starting the purification function.
However, in the control method of the air conditioner provided by the prior art, when the PM2.5 concentration is greater than the first threshold value, and the CO concentration is greater than the first threshold value2When the concentration is greater than a second threshold value; if the purification function is started first until the concentration of PM2.5 is less than a first threshold value, and then the fresh air function is started, indoor CO can be generated2Too high a concentration; if the fresh air function is started first until the CO is in the fresh air function2When the concentration is less than the second threshold value and then the purification function is started, the concentration of PM2.5 in the room is too high. Whether CO or not2Too high concentration or too high concentration of PM2.5 can result in poor indoor air quality and poor user experience.
Disclosure of Invention
Embodiments of the present invention provide an air conditioner and a control method thereof, which can prevent CO from occurring2The too high problem of concentration or PM2.5 concentration improves indoor air quality, promotes user's use experience.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in one aspect, an embodiment of the present invention provides an air conditioner including: a fresh air system for introducing fresh air into the room to reduce indoor CO2Concentration; the purification system is used for purifying air and reducing the concentration of PM2.5 in the air, and the purification system and the fresh air system share an air duct and a fan; first detection means for detecting CO2Concentration; second detection means for detecting the PM2.5 concentration; the controller is electrically connected with the fresh air system, the purification system, the first detection device and the second detection device; the controller is used for obtaining CO2Concentration and PM2.5 concentration, and calculating CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2According to the degree of deviation Q1And degree of deviation Q2The size of the air conditioner is controlled to start a fresh air system, or start a purification system, or alternatively start the fresh air system and the purification system; wherein the degree of deviation Q1The method comprises the following steps: CO detected by the first detecting device2Concentration exceeding CO2A percentage of a concentration threshold; degree of deviation Q2The method comprises the following steps: the second detection means detects a percentage of the PM2.5 concentration exceeding the PM2.5 concentration threshold.
In the air conditioner of the embodiment of the invention, when the first detection device detects CO2Concentration value greater than CO2And when the concentration threshold value and the PM2.5 concentration detected by the second detection device are greater than the PM2.5 concentration threshold value, the air conditioner alternately starts the fresh air system and the purification system. Controller capture of CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2And according to the degree of deviation Q1And degree of deviation Q2Size of (1)Controlling the starting sequence of the fresh air system and the purification system; according to the degree of deviation Q1Degree of deviation Q2The operation time of the fresh air system and the purification system is controlled. The air conditioner provided by the embodiment of the invention can be used for alternately reducing CO2Concentration and PM2.5 concentration, preventing CO from appearing2The too high problem of concentration or PM2.5 concentration, and then improve indoor air quality, promote user's use experience.
On the other hand, an embodiment of the present invention further provides a control method of the air conditioner, where the control method includes:
in a first determination mode, the controller acquires CO2Concentration and PM2.5 concentration, and calculating CO2Degree of deviation of concentration Q1And degree of deviation Q from PM2.5 concentration2；
Degree of deviation Q1Not less than 1 and a degree of deviation Q2When the air conditioner is more than or equal to 1, the air conditioner enters a first alternative mode;
in a first alternating mode, a degree of deviation Q is determined1Degree of deviation Q2The size of (d);
when Q is1＜Q2When the time length of the purification system reaches the first time length T1When the first judgment mode is operated again;
when Q is1＞Q2When the fresh air system is started, the time length for starting the fresh air system reaches a second time length T2When the first judgment mode is operated again;
when Q is1＝Q2When the air conditioner is started, a purification system or a fresh air system is started; the time length of starting the purification system reaches a first time length T1Or the time for opening the fresh air system reaches a second time T2When the first judgment mode is operated again;
wherein the degree of deviation Q1For CO detected by the first detecting means2Concentration and CO2A ratio of concentration thresholds; degree of deviation Q2Is the ratio of the concentration of the PM2.5 measured by the second detection means to the threshold concentration of the PM 2.5.
The control method comprises a first judgment mode and a first alternating mode.
In the first judgment mode, first, the controller controls the first monitoring device to detect the indoor CO2Concentration, the second detection means detects PM2.5 concentration in the room, and acquires detected CO2Concentration and PM2.5 concentration according to CO2Concentration and PM2.5 concentration calculation of CO2Degree of deviation of concentration Q1And degree of deviation Q from PM2.5 concentration2. Then, the deviation Q is determined1And degree of deviation Q2And a size of 1. Degree of deviation Q1Not less than 1 and a degree of deviation Q2And when the air conditioner is larger than or equal to 1, the controller controls the air conditioner to enter a first alternate mode.
In the first alternating mode, CO2The concentration and PM2.5 concentration both exceed preset values, and the controller judges the deviation Q1And degree of deviation Q2And further controlling the priority opening sequence of the fresh air system and the purification system. When Q is1＜Q2Meanwhile, the PM2.5 standard exceeding (deviation degree) is more serious, at the moment, the controller controls the air conditioner to start the purification system, and the time for starting the purification system reaches a first time T1And then, the first judgment mode is operated again. When Q is1＞Q2When it is CO2The standard exceeding is more serious, at the moment, the controller controls the air conditioner to start the fresh air system, and the time for starting the fresh air system reaches the second time length T2And then, the first judgment mode is operated again. When Q is1＝Q2PM2.5 and CO2The overproof condition is equivalent, and at the moment, the purification system can be started firstly, and the fresh air system can also be started firstly. Optionally, the priority of the purification system and the priority of the fresh air system are preset in the controller; illustratively, the purification system has a higher priority than the fresh air system. When Q is1＝Q2When the time is up, the purification system is preferentially started, and the time length for starting the purification system reaches a first time length T1And then, the first judgment mode is operated again. Compared with the prior art, the control method provided by the embodiment of the invention is used when CO is used2When the concentration and PM2.5 concentration both exceed preset values, according to the deviation degree Q1And degree of deviation Q2The fresh air system and the purification system are alternately started to avoid the occurrence of CO2Concentration ofToo high or too high problem of PM2.5 concentration, and then improve indoor air quality, promote user's use experience.
Drawings
FIG. 1 is a flow chart of an air conditioner control method according to an embodiment of the present invention in a non-sleep operation state;
FIG. 2 is a flowchart illustrating a sleep operation of an air conditioner control method according to an embodiment of the present invention;
FIG. 3 is a flow chart of operation state selection of an air conditioning control method according to an embodiment of the present invention;
fig. 4 is a flowchart of an air conditioner control method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In one aspect, an embodiment of the present invention provides an air conditioner including: a fresh air system for introducing fresh air into the room to reduce indoor CO2Concentration; the purification system is used for purifying air and reducing the concentration of PM2.5 in the air, and the purification system and the fresh air system share an air duct and a fan; first detection means for detecting CO2Concentration; second detection means for detecting the PM2.5 concentration; the controller is electrically connected with the fresh air system, the purification system, the first detection device and the second detection device; the controller is used for obtaining CO2Concentration and PM2.5 concentration, and calculating CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2According to the degree of deviation Q1And degree of deviation Q2The size of the air conditioner is controlled to start a fresh air system, or start a purification system, or alternatively start the fresh air system and the purification system; wherein the degree of deviation Q1The method comprises the following steps: CO detected by the first detecting device2Concentration exceeding CO2A percentage of a concentration threshold; degree of deviation Q2The method comprises the following steps: the second detection means detects a percentage of the PM2.5 concentration exceeding the PM2.5 concentration threshold.
In the air conditioner of the embodiment of the invention, when the first detection device detects CO2Concentration value greater than CO2And when the concentration threshold value and the PM2.5 concentration detected by the second detection device are greater than the PM2.5 concentration threshold value, the air conditioner alternately starts the fresh air system and the purification system. Controller capture of CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2And according to the degree of deviation Q1And degree of deviation Q2The opening sequence of the fresh air system and the purification system is controlled according to the size relationship; according to the degree of deviation Q1Degree of deviation Q2The operation time of the fresh air system and the purification system is controlled. The air conditioner provided by the embodiment of the invention can be used for alternately reducing CO2Concentration and PM2.5 concentration, preventing CO from appearing2The too high problem of concentration or PM2.5 concentration, and then improve indoor air quality, promote user's use experience.
On the other hand, an embodiment of the present invention further provides a control method of the air conditioner, where the control method includes:
in a first determination mode, the controller acquires CO2Concentration and PM2.5 concentration, and calculating CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2；
Degree of deviation Q1Not less than 1 and a degree of deviation Q2When the air conditioner is more than or equal to 1, the air conditioner enters a first alternative mode;
determining Q in the case where the air conditioner enters the first alternate mode1And Q2The size of (d);
when Q is1＜Q2When the time length of the purification system reaches the first time length T1When the first judgment mode is operated again;
when Q is1＞Q2When the fresh air system is started, the time length for starting the fresh air system reaches a second time length T2When the first judgment mode is operated again;
when Q is1＝Q2When the air conditioner is started, a purification system or a fresh air system is started; the time length of starting the purification system reaches a first time length T1Or the time for opening the fresh air system reaches a second time T2When the first judgment mode is operated again;
wherein the degree of deviation Q1For CO detected by the first detecting means2Concentration and CO2A ratio of concentration thresholds; degree of deviation Q2Is the ratio of the concentration of the PM2.5 measured by the second detection means to the threshold concentration of the PM 2.5.
Referring to fig. 1, a control method according to an embodiment of the present invention includes a first determining mode and a first alternating mode.
In a first judgment mode, the control method comprises the following steps:
step S1, obtaining CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2。
The first detection device detects CO2And CO concentration value of2The concentration value is transmitted to a controller, and the controller is based on CO2CO concentration value calculation2Degree of deviation of concentration Q1. The second detection device detects the concentration value of PM2.5, transmits the concentration value of PM2.5 to the controller, and the controller calculates the deviation Q of the concentration of PM2.5 according to the concentration value of PM2.52。
Step S2, determining deviation Q1Magnitude of 1, and degree of deviation Q2And a size of 1.
Step S21, when the deviation degree Q is1Not less than 1 and a degree of deviation Q2And when the air conditioner is more than or equal to 1, the air conditioner enters a first alternative mode.
In the first alternate mode, the control method further includes:
in the step of S3,determining a degree of deviation Q1Degree of deviation Q2The size of (2).
Step S31, when Q is satisfied1≤Q2Timely, air-conditioning operation purification system T1For a long time, and then the first determination mode is re-run.
When Q is1≤Q2The deviation degree of PM2.5 concentration in air is larger than that of CO2The deviation degree of the concentration, at which the air conditioner firstly operates the purification system, preferentially reduces the PM2.5 concentration in the air. When the cleaning system is operated T1And after the time length is long, the first judgment mode is operated again.
Step S32, when Q is satisfied1＞Q2In time, the air conditioner operates the fresh air system T2For a long time, and then the first determination mode is re-run.
When Q is1＞Q2CO in the air2The deviation degree of the concentration is larger than that of PM2.5 concentration, at the moment, the air conditioner firstly operates a fresh air system to preferentially reduce CO in the air2And (4) concentration. When the fresh air system runs T2And after the time length is long, the first judgment mode is operated again.
When Q is1＝Q2When the air conditioner starts the purifying system first, the time length for operating the purifying system reaches a first time length T1Then, the first judgment mode is operated again; when the air conditioner firstly starts the fresh air system, the time length for operating the fresh air system reaches the second time length T2And then, the first judgment mode is operated again. Optionally, the operation priority of the purification system and the fresh air system is set in the controller, when Q is1＝Q2And meanwhile, the starting sequence of the purification system and the fresh air system is uniquely determined. Exemplary, in embodiments of the present invention, when Q is1＝Q2When the air conditioner is operated, the controller controls the air conditioner to preferentially operate the purification system, i.e., when Q is set1＝Q2When the air conditioner is started, the purification system is started first, and the time for operating the purification system reaches a first time length T1And then, the first judgment mode is operated again.
It is to be understood that when Q is1＝Q2The prior operation of the purification system is only oneAlternative embodiments. When Q is1＝Q2In time, the fresh air system can be operated firstly, and the time for operating the fresh air system reaches the second time length T2And then, the first judgment mode is operated again.
In the embodiment of the invention, the deviation Q1For CO detected by the first detecting means2Concentration and CO2A ratio of concentration thresholds; degree of deviation Q2Is the ratio of the concentration of the PM2.5 measured by the second detection means to the threshold concentration of the PM 2.5. CO 22The concentration threshold is CO preset in the controller2Critical value of concentration of CO detected by the first detecting means2At a concentration greater than CO2At threshold concentration, CO2The concentration exceeds the standard, a fresh air system needs to be started for ventilation, and CO in the air is reduced2And (4) concentration. PM2.5 concentration threshold and CO2The concentration thresholds are similar and will not be described in detail herein.
The degree of deviation Q1And degree of deviation Q2The CO measured by the first detection device can also be obtained by other calculation methods2Concentration reduced CO2Obtaining a CO at a concentration threshold2Difference in concentration, degree of deviation Q1Is the CO2Concentration difference and preset CO2Ratio of concentration thresholds. Degree of deviation Q2Degree of deviation Q1Similarly, the embodiments of the present invention are not described in detail. At this time, when the deviation Q is small1Not less than 0 and a degree of deviation Q2And when the air conditioner is larger than or equal to 0, the controller controls the air conditioner to enter a first judgment mode.
Illustratively, in the first determination mode, if Q1＝1.5，Q2The air conditioner enters the first judgment mode as 2. At this time, Q1＜Q2And the air conditioner starts the purification system T1For a period of time (e.g., 10 minutes on). Re-operating the first determination mode, wherein if Q1＝1.6，Q21.7, the air conditioner continues to turn on the purification system T1The length of time. Re-operating the first judgment mode; at this time, if Q1＝1.7，Q21.3, the air conditioner starts the new trend system T2For a period of time (e.g., 8 minutes on). Re-operating the first judgment mode; then the deviation Q is measured again1And degree of deviation Q2According to the magnitude of the deviation Q1And degree of deviation Q2The purifying system and the fresh air system are alternately started according to the size relationship.
As shown in fig. 1, the control method according to the embodiment of the present invention, in the first determination mode, further includes:
step S22, when the deviation degree Q is1< 1 and degree of deviation Q2When the air conditioner is not less than 1, the air conditioner operates the purification system T1For a long time, and then the first determination mode is re-run.
Degree of deviation Q1< 1 and degree of deviation Q2When the concentration is more than or equal to 1, only PM2.5 concentration exceeds the standard, and CO2The concentration does not exceed the standard, and at the moment, the controller controls the air conditioner to start the purification system, so that the concentration of the PM2.5 in the room is reduced. When the time length for starting the purification system reaches a first time length T1And then, the first judgment mode is operated again.
Step S23, when the deviation degree Q is1Not less than 1 and a degree of deviation Q2When the air conditioner is less than 1 hour, the air conditioner operates a fresh air system T2For a long time, and then the first determination mode is re-run.
Degree of deviation Q1Not less than 1 and a degree of deviation Q2When < 1, only CO2The concentration exceeds the standard, and the PM2.5 concentration does not exceed the standard, at the moment, the controller controls the air conditioner to start a fresh air system, fresh air is introduced into the room, and indoor CO is reduced2And (4) concentration. When the time length of the fresh air system is up to the second time length T2And then, the first judgment mode is operated again.
Step S24, when the deviation degree Q is1< 1 and degree of deviation Q2When the air conditioner is less than 1, the air conditioner is in a closed state and passes through T3And after the time length is long, the first judgment mode is operated again.
In the first judgment mode, Q1< 1, and Q2When < 1, indoor CO2The concentration and PM2.5 concentration do not exceed the standard, and a purification system and a fresh air system do not need to be started, and every T passes3The first judgment mode is operated again in time length, and the deviation degree Q is detected1And degree of deviation Q2The value of (c). So that when CO is present2When the concentration or PM2.5 concentration exceeds the standard, the controller can find the concentration or PM2.5 concentration in time and control the airOpening a purification system or a fresh air system to reduce CO2Concentration or PM2.5 concentration, improve indoor air quality in time. It should be understood that "the air conditioner is in the off state" means that the fresh air system and the purification system of the air conditioner are in the off state, and at this time, the air conditioner can still exchange heat with the indoor air.
It should be noted that the third time period T3May be a fixed value stored within the controller; illustratively, the third duration T3At 5 minutes, when CO is present2When the concentration and the PM2.5 concentration do not exceed the standard, the first judgment mode is operated again every 5 minutes, and the CO is detected once2And PM2.5 concentration.
A third duration T3Can also be based on the degree of deviation Q1And degree of deviation Q2When Q is determined1＜1，Q2< 1, and Q1＜Q2Time of the third duration T3For a predetermined time period and Q2The ratio of (A) to (B); when Q is1＞Q2Time of the third duration T3For a predetermined time period and Q1The ratio of (a) to (b). Illustratively, the predetermined time period is 5 minutes, Q1＜Q2And Q is2Is 0.5, and the third time period T is35/0.5-10 min. The better the indoor air quality (Q)1And Q2Smaller value of) is set, the third period T3The longer.
Referring to fig. 2, the control method according to the embodiment of the present invention further includes a second determination mode and a second alternating mode.
In the second determination mode, the control method includes:
step S4, obtaining CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2。
The controller controls the first monitoring device to detect CO2Concentration, the second detection means detects the PM2.5 concentration, and acquires the detected CO2Concentration and PM2.5 concentration, calculating CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2。
Step S5, determining deviation Q1Magnitude of 1, and degree of deviation Q2And a size of 1.
Step S51, when the deviation degree Q is1Not less than 1 and a degree of deviation Q2And when the air conditioner is more than or equal to 1, the air conditioner enters a second alternative mode.
In a second alternating mode, the control method comprises:
operating a fresh air system or a purification system T according to a preset priority order4For a long time, and then the second determination mode is re-executed.
The preset priority is determined according to the noise level when the fresh air system operates and the noise level when the purification system operates, one low noise priority is high, and the system with the high priority is preferentially operated in the second alternative mode. In the second alternate mode, the controller controls the air conditioner to preferentially turn on the system having less noise, compared to the first alternate mode.
Illustratively, the noise during the operation of the fresh air system is less than the noise during the operation of the purification system, and the priority of the fresh air system is higher than that of the purification system. In the second alternative mode, as shown in fig. 4, step S51 is: operation fresh air system T4For a long time, and then the second determination mode is re-executed. A fourth time period T4May be equal to the second duration T2Equal to the second time length T2Not equal. A fourth time period T4May be of a fixed duration, e.g. a fourth duration T4Is 5 minutes; a fourth time period T4Can also be mixed with CO2Degree of deviation of concentration Q1Proportional, e.g. T4＝K×Q1Wherein K is a time base, optionally K is 5 minutes, when the deviation Q is1At 1.5, T4＝K×Q 15 × 1.5 ═ 7.5 minutes.
In the control method of the embodiment of the invention, the preset priority is stored in the controller in advance. Generally, at a rated power, the noise level when a fresh air system of the air conditioner is operated and the noise level when a purification system is operated are relatively fixed. After the air conditioner is manufactured, the fresh air system and the purification system are respectively started, the noise magnitude during the operation of the fresh air system and the noise magnitude during the operation of the purification system are respectively detected, the preset priority is formulated according to the noise magnitude of the fresh air system and the noise magnitude of the purification system, and the preset priority is stored in the controller.
As shown in fig. 2, the control method of the embodiment of the present invention further includes, in the second determination mode:
step S52, when the deviation degree Q is1< 1 and degree of deviation Q2When the air conditioner is not less than 1, the air conditioner operates the purification system T1For a long time, and then the second determination mode is re-executed.
Step S53, when the deviation degree Q is1Not less than 1 and a degree of deviation Q2When the air conditioner is less than 1 hour, the air conditioner operates a fresh air system T2For a long time, and then the second determination mode is re-executed.
Step S54, when the deviation degree Q is1< 1 and degree of deviation Q2When the air conditioner is less than 1, the air conditioner is in a closed state and passes through T3And after the time is long, the second judgment mode is operated again.
The air conditioner provided by the embodiment of the invention comprises a sleep operation state and a non-sleep operation state. Referring to fig. 3 and 4, the control method further includes:
step S100, determining the current operation time T0。
Step S101, judging the current operation time T0Whether in the preset time period TsAnd (4) the following steps.
Step S102, if the current running time T0In a preset time period TsAnd operating the first judgment mode.
In the embodiment of the invention, the time period T is presetsFor the time period during which the user is asleep, current running time T0In a preset time period TsWhen the air conditioner is in the non-sleep operation state, the influence of the operation noise of the fresh air system and the purification system on the rest of the user is not considered, and the indoor air quality is preferentially improved, so that the first judgment mode and the first alternative mode are operated.
Step S103, if the current operation time T0In a preset time period TsAnd operating the second judgment mode.
Preset time period TsFor the sleeping time of the user, the noise of the air conditioner can directly influence the sleeping quality of the user in the sleeping time period, if the user sleepsThe noise is large, which may result in poor sleep quality of the user, and therefore, in the sleep operation state, the second determination mode and the second alternating mode are operated.
Control method of the embodiment of the invention, first time length T1Degree of deviation Q1Proportional, second duration T2Degree of deviation Q2Is in direct proportion. Optionally, T1＝Tz×Q1，T2＝Tz×Q2Wherein, TzFor a preset time period, T, stored in the controllerzIs a fixed value, illustratively, TzAnd may be 5 minutes. The control method of the embodiment of the invention can be used for controlling the deviation Q according to the deviation degree1Determining the operation time length T of the fresh air system1According to the degree of deviation Q2Determining the operating time T of the purification system2。
It should be noted that the first time period T1And a second duration T2But may also be a fixed value preset within the controller. Illustratively, the first time period T1Is equal to the second duration T2Equal to 5 minutes. In the embodiment of the invention, the first duration T1Degree of deviation Q1Proportional, second duration T2Degree of deviation Q2In direct proportion, the air conditioner can more accurately regulate the indoor air quality and reduce the energy consumption of the air conditioner. Degree of deviation Q1Or degree of deviation Q2When the value of (A) is large, for example, when Q is large1＞Q2And degree of deviation Q1When 2, the first time length T1The air conditioner is longer, the first judgment mode or the second judgment mode can be prevented from being operated repeatedly, the working frequency of the first detection device or the second detection device is reduced, and energy is saved. Degree of deviation Q1Or degree of deviation Q2When the value of (A) is small, for example, when Q is small1＞Q2And degree of deviation Q11.2, the first time length T1Short, when Q1When the air conditioner is less than 1, the controller can close the fresh air system in time, so that long-time operation is avoided, and the energy consumption of the air conditioner is reduced.
Generally, the new trend system and the clean system of air conditioner all include two at least gears, and optionally, new trend system and clean system all include two gears, and two gears are high gear and low gear respectively. The running power of the fresh air system and the purification system is higher in high gear, and the noise is higher in running; and when the gear is low, the running power of the fresh air system and the purification system is low, and the noise during running is low. According to the control method provided by the embodiment of the invention, the fresh air system or the purification system operates at a high gear under the non-sleep operation state, so that the air conditioner can rapidly improve the indoor air quality and improve the use experience of a user. Under the sleep running state, the low gear operation of new trend system or clean system to noise when reducing the air conditioner operation reduces the influence of air conditioner operation to user's sleep quality, promotes user's use and experiences.
The air conditioner of the embodiment of the invention also comprises an instruction input unit, wherein the instruction input unit is electrically connected with the controller; preset time period T of sleep operation statesThe start time and the end time of (c) may be set by the instruction input unit. The sleep habits and the sleep times of different people and different users are greatly different, for example, the old people have shorter sleep time, have earlier sleep time and lighter sleep and are more easily disturbed by tiny noise; and some middle-aged people begin sleeping later due to work or other reasons. Preset time period T of sleep operation statesThe instruction input unit can be used for setting so as to adapt to different users and crowds and improve the use experience of the users.
It should be noted that the preset time period T issThe whole process of the user's actual sleep can be, for example, a preset time period TsMay be set from the current day 10: 30-the next morning 7: 00. preset time period TsIt may be set to a shorter time, preset time period TsThe time duration of the time interval can be 0.5-2 hours, and optionally, the preset time period TsThe time period of (1) is 1 hour, and at this time, it is considered that the user is in a sound sleep state after the user starts falling asleep for 1 hour, and the user is not disturbed by the noise of the air conditioner. Illustratively, the preset time period TsMay be set from 10 pm: 30-night 11: 30.
the control method provided by the embodiment of the invention can also be applied to a fresh air machine or an air purifier, for example, the control method can be applied to the fresh air machine with a purification function.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An air conditioner, comprising:
the fresh air system is used for introducing fresh air into the room;
the purification system is used for purifying air and reducing the concentration of PM2.5 in the air, and the purification system and the fresh air system share an air duct and a fan;
first detection means for detecting CO2The concentration of (c);
second detection means for detecting the concentration of PM 2.5;
the controller is electrically connected with the fresh air system, the purification system, the first detection device and the second detection device; the controller obtains CO2Concentration and PM2.5 concentration, and calculating CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2According to the degree of deviation Q1And degree of deviation Q2The air conditioner is controlled to start the fresh air system, or start the purification system, or alternatively start the fresh air system and the purification system;
wherein the degree of deviation Q1The method comprises the following steps: CO detected by the first detection device2Concentration exceeding CO2A percentage of a concentration threshold; degree of deviation Q2The method comprises the following steps: the second detection device detects a percentage of the concentration of PM2.5 that exceeds the PM2.5 concentration threshold.
2. A control method for controlling the air conditioner according to claim 1, wherein the control method comprises:
in a first determination mode, the controller acquires CO2And the concentration value of PM2.5, and calculating CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2；
Degree of deviation Q1Not less than 1 and a degree of deviation Q2When the air conditioner is more than or equal to 1, the air conditioner enters a first alternative mode;
determining a degree of deviation Q in the first alternating pattern1Degree of deviation Q2The size of (d);
when Q is1＜Q2The purification system is started, and the time length for starting the purification system reaches a first time length T1When the first judgment mode is not operated, the first judgment mode is operated again;
when Q is1＞Q2When the fresh air system is started, the time length for starting the fresh air system reaches a second time length T2When the first judgment mode is not operated, the first judgment mode is operated again;
when Q is1＝Q2When the fresh air is exhausted, the purification system or the fresh air system is started; the time length of starting the purification system reaches the first time length T1Or the time for opening the fresh air system reaches the second time T2When the first judgment mode is not operated, the first judgment mode is operated again;
wherein the degree of deviation Q1For CO detected by the first detection means2Concentration and CO2A ratio of concentration thresholds; degree of deviation Q2Is the ratio of the concentration of PM2.5 measured by the second detection device to the threshold concentration of PM 2.5.
3. The control method according to claim 2, wherein the first determination mode further includes:
degree of deviation Q1< 1 and degree of deviation Q2The purification system is started when the time length of the purification system reaches a first time length T1When the first judgment mode is not operated, the first judgment mode is operated again;
degree of deviation Q1Not less than 1 and a degree of deviation Q2When the time length is less than 1, the fresh air system is started, and the time length for starting the fresh air system reaches a second time length T2When the first judgment mode is not operated, the first judgment mode is operated again;
degree of deviation Q1< 1 and degree of deviation Q2When the air quantity is less than 1, the purification system and the fresh air system are both kept in a closed state; the time length of keeping the closing state reaches a third time length T3And then, the first judgment mode is operated again.
4. The control method according to claim 2, characterized by further comprising:
in a second determination mode, the controller obtains CO2And concentration of PM2.5, and calculating CO2Degree of deviation of concentration Q1And degree of deviation Q of PM2.5 concentration2；
Degree of deviation Q1Not less than 1 and a degree of deviation Q2When the air conditioner is more than or equal to 1, the air conditioner enters a second alternative mode;
in the second alternative mode, the fresh air system or the purification system is operated according to a preset priority order, and when the operation time of the fresh air system or the purification system reaches a fourth time T4If so, the second judgment mode is operated again;
the priority is determined according to the noise when the fresh air system and the purification system run, the low-noise priority is high, and the system with the high priority is preferentially run in the second alternative mode.
5. The control method according to claim 4, wherein the preset priority is stored in the controller in advance.
6. The control method according to claim 4, characterized in that the second determination mode further includes:
degree of deviation Q1< 1 and degree of deviation Q2When the time is more than or equal to 1, the purification system is started, and the time for starting the purification system reaches the first timeA time length T1If so, re-operating the second judgment mode;
degree of deviation Q1Not less than 1 and a degree of deviation Q2When the time length is less than 1, the fresh air system is started, and the time length for starting the fresh air system reaches a second time length T2If so, re-operating the second judgment mode;
degree of deviation Q1< 1 and degree of deviation Q2When the air quantity is less than 1, the purification system and the fresh air system are both kept in a closed state; the time length of keeping the closing state reaches a third time length T3And when the second judgment mode is not operated, the second judgment mode is operated again.
7. The control method according to claim 6, wherein the air conditioner includes a sleep operation state and a non-sleep operation state; the control method further comprises the following steps:
determining the current running time;
when the current running time is out of the preset time period, entering a non-sleep running state, and running the first judgment mode at the moment;
and when the current running time is within a preset time period, entering a sleep running state, and running the second judgment mode at the moment.
8. The control method according to any one of claims 2 to 6, characterized in that the first time period T is1Degree of deviation Q1In direct proportion to the second duration T2Degree of deviation Q2Is in direct proportion.
9. The control method according to claim 7, wherein the fresh air system and the purification system each include at least two gears, and in the non-sleep operating state, the fresh air system or the purification system is operated in a high gear; and in the sleep running state, the fresh air system or the purification system runs at a low gear.
10. The control method according to claim 7, wherein the air conditioner further comprises an instruction input unit electrically connected to the controller;
the start time and the end time of the preset time period may be set by the instruction input unit.
CN202010091262.9A 2020-02-13 2020-02-13 Air conditioner and control method thereof Pending CN111256316A (en)

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