CN113375272B - Fresh air conditioner control method - Google Patents
Fresh air conditioner control method Download PDFInfo
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- CN113375272B CN113375272B CN202110702740.XA CN202110702740A CN113375272B CN 113375272 B CN113375272 B CN 113375272B CN 202110702740 A CN202110702740 A CN 202110702740A CN 113375272 B CN113375272 B CN 113375272B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- 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
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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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- 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)
- Fluid Mechanics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the field of fresh air conditioners and discloses a fresh air conditioner control method which is used for realizing fresh air conditioner control without depending on a carbon dioxide sensor, so that the problem that the fresh air function cannot be controlled due to failure of the carbon dioxide sensor is solved. After a fresh air conditioner is started, room environment parameters and air conditioner setting parameters are collected, wherein the room environment parameters comprise indoor temperature, outdoor temperature and indoor humidity, and the air conditioner setting parameters comprise a setting mode and a setting temperature; and determining whether the room working condition is normal according to the collected room environment parameters and the air conditioner setting parameters, and performing corresponding fresh air function control. The invention is suitable for fan control of fresh air conditioners.
Description
Technical Field
The invention relates to the field of fresh air conditioners, in particular to a fresh air conditioner control method.
Background
In the fresh air conditioner on the market, a carbon dioxide concentration value of a room detected by a carbon dioxide sensor is used as a basis for controlling ventilation of a fresh air fan, and the start, the rotating speed and the wind shield of the fresh air fan are automatically controlled according to the carbon dioxide concentration value. Or, the fresh air ventilation function is started manually, and the operation gear of the fresh air fan is set manually. The principle of the control scheme is simple, the implementation is convenient, the carbon dioxide sensor is additionally arranged, the requirements on the reliability and the detection progress of the carbon dioxide sensor are high, and once the carbon dioxide sensor fails, the fresh air function cannot be automatically adjusted and controlled.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the fresh air conditioner control method is provided, fresh air control is achieved without depending on a carbon dioxide sensor, and therefore the problem that fresh air cannot be controlled due to failure of the carbon dioxide sensor is solved.
In order to solve the problems, the invention provides a fresh air conditioner control method, which is characterized in that after a fresh air conditioner is started, room environment parameters and air conditioner setting parameters are collected, wherein the room environment parameters comprise indoor temperature, outdoor temperature and indoor humidity, and the air conditioner setting parameters comprise a setting mode and a setting temperature; and determining whether the room working condition is normal according to the collected room environment parameters and the air conditioner setting parameters, and performing corresponding fresh air function control.
Further, the step of determining whether the room condition is normal may include:
if the set mode of the air conditioner is a heating mode, the recent indoor temperature is higher than the outdoor temperature, and the change trend of the indoor temperature is continuously increased, judging that the working condition of the room is normal, otherwise, judging that the working condition of the room is abnormal; if the air conditioner setting mode is a refrigeration/dehumidification mode, meanwhile, the recent indoor temperature is lower than the outdoor temperature, and the change trend of the indoor temperature is continuously reduced, the working condition of the room is judged to be normal, otherwise, the working condition of the room is judged to be abnormal.
Further, when the room working condition is abnormal, the fresh air function control can be carried out according to the following modes: and (4) starting the fresh air function, running for h2 time by using a low wind shield, then closing the fresh air function for h1 time, and circulating the steps.
Further, when the room working condition is normal, the fresh air function control can be carried out according to the following modes: continue to gather room environmental parameter, begin the timing when room temperature and humidity no longer change, open the new trend function behind time h3, continue to gather room environmental parameter after opening the new trend function to carry out the windscreen according to following mode and adjust:
(a) if the wind speed reduction condition is detected, reducing the wind speed of the first gear, and if the wind speed reduction condition is detected again after a period of time, continuing to reduce the new wind gear until the lowest wind shield;
the wind speed reduction conditions are as follows: detecting that the indoor temperature or the indoor humidity starts to rise during refrigeration and exceeding a threshold value for a period of time; or detecting that the room temperature begins to drop when heating and exceeds a threshold value for a period of time;
(b) if the wind speed rising condition is detected, the wind speed of the first gear is raised, and if the wind speed rising condition is detected again after a period of time, the new wind gear is continuously raised until the highest wind shield;
the wind speed rising condition is as follows: detecting that the indoor temperature or the indoor humidity begins to drop during refrigeration and exceeding a threshold value for a period of time; or detecting that the room temperature starts to rise when heating and exceeds a threshold value for a period of time;
(c) and when the fresh air function is put into use for a period of time, the room environment parameters are not obviously changed after the adjustment of the step (a) or the step (b), and the current fresh air gear is kept running when the variation is within the threshold value adjusted upwards or downwards.
Further, in order to improve control efficiency, when the room operating mode is normal, the starting gear of the fan is determined according to the variation of the indoor temperature in the time h0 when the fresh air function is started.
Further, when the air conditioner setting mode is the ventilation mode, the fresh air function is directly started, and the fresh air function is controlled according to the control mode when the room working condition is abnormal.
The invention has the beneficial effects that: according to the invention, the carbon dioxide concentration of a room is not detected by a carbon dioxide sensor, the closing condition of doors and windows of the room is not detected by other equipment, the sealing condition of the room is identified by a set of temperature and humidity change statistical method, the stable operation duration of the air conditioner is combined to identify whether the ventilation function of the fresh air conditioner needs to be started or not, a set of complete fresh air automatic control method is realized, and the problem that the fresh air function cannot be controlled due to the failure of the carbon dioxide sensor is completely avoided.
Drawings
Fig. 1 is a fresh air conditioner controller system provided in an embodiment of the present invention.
Fig. 2 is a flow chart of automatic control of a fresh air conditioner according to an embodiment of the present invention.
Fig. 3 is a graph illustrating an automatic control of a heating mode of a fresh air conditioner according to an embodiment of the present invention.
Fig. 4 is a diagram illustrating an automatic control curve of a cooling mode of a fresh air conditioner according to an embodiment of the present invention.
Detailed Description
In order to realize control of the fresh air conditioner without depending on a carbon dioxide sensor and avoid the problem that the fresh air cannot be controlled due to failure of the carbon dioxide sensor, the invention identifies the airtight condition of a room by a set of temperature and humidity change statistical method, identifies whether the ventilation function of the fresh air conditioner needs to be started or not by combining the stable operation duration of the air conditioner, and realizes a set of complete automatic fresh air control method. The method mainly comprises the following implementation modes: after a fresh air conditioner is started, room environment parameters and air conditioner setting parameters are collected, wherein the room environment parameters comprise indoor temperature, outdoor temperature and indoor humidity, and the air conditioner setting parameters comprise a setting mode and a setting temperature; and determining whether the room working condition is normal or not according to the room environment parameters and the air conditioner setting parameters collected within a period of time after the fresh air conditioner is started, and performing corresponding fresh air function control. The invention is further illustrated by the following examples and figures.
The embodiment provides an automatic control method of a fresh air conditioner, which is applied to a fresh air conditioner controller system shown in fig. 1, and specifically comprises the following steps as shown in fig. 2-4,
1. after the fresh air conditioner is started, room environment parameters and air conditioner setting parameters are collected and recorded, wherein the room environment parameters comprise indoor temperature Tr, outdoor temperature To, indoor humidity Hr and the like, and the air conditioner setting parameters comprise operation parameters such as a setting mode and a setting temperature Ts.
2. Room condition identification
And in the running process of the fresh air conditioner, the change rules of the indoor temperature Tr and the indoor humidity Hr are counted regularly. When the air conditioner setting mode is set as the heating mode, the change of the relative humidity of the room can be ignored; recording the room temperature Tr once every time t after the air conditioner is started, and counting the change trend of the room temperature Tr after recording n times; if the internal temperature Tr is higher than the external temperature To at time h0(h0 ═ n × t), and Tr changes in a trend that continues To rise, for example: and counting for 3 times once in 10 minutes, if Tr0< Tr1< Tr2< Tr3< Ts and (Ts-Tr1) > (Ts-Tr2) > (Ts-Tr3) or (Tr1-Tr0) < (Tr2-Tr0) < (Tr3-Tr0) in 30 minutes, judging that the room sealing effect is good, and the working condition of the room is normal, otherwise, judging that the working condition of the room is abnormal.
If the working mode of the air conditioner is set as a refrigeration/dehumidification mode, the statistics of the relative change of the temperature and the humidity is more accurate, the indoor temperature Tr and the indoor humidity Hr are recorded once every time t after the air conditioner is started, and the change trend of the Tr and the Hr is counted after n times of recording. If the room temperature Tr is lower than the outdoor temperature To within the time h0(h0 ═ n × t) and Tr trends To continuously decrease, for example: counting for 3 times once in 10 minutes, if Tr0> Tr1> Tr2> Tr3> Ts and (Tr1-Ts) > (Tr2-Ts) > (Tr3-Ts) or (Tr0-Tr1) < (Tr0-Tr2) < (Tr0-Tr3) in 30 minutes; similarly, if the statistics of Hr0, Hr1, Hr2 and Hr3 are carried out, and simultaneously (Hr0-Hr1) < (Hr0-Hr2) < (Hr0-Hr3) meet one of the two conditions, the room sealing effect is good, the room working condition is normal, otherwise, the room working condition is abnormal.
3. Fresh air function start
When the working condition of the room is abnormal, such as insufficient system capacity, mismatching with the area of the room, unclosed doors and windows of the room and the like, the fresh air is automatically controlled according to the following method: and starting the fresh air function, operating the low-wind damper for h2 time, then closing the fresh air function for h1 time, then starting the fresh air function again, operating the low-wind damper for h2 time, and then closing the fresh air function for h1 time, and circulating the steps, wherein h1 and h2 are preset values generally obtained through tests before the air conditioner leaves a factory.
When the air conditioner setting mode is the ventilation mode, the fresh air function can be directly started without the identification of the working conditions of the room, and can be started and closed according to the abnormal working conditions of the room, at the moment, the h1 and the h2 can be preset values obtained through tests before the air conditioner leaves a factory, and can also be set values manually set by a user.
When the working condition of a room is normal, room environment parameters are continuously collected, when the temperature and the humidity of the room do not change any more, the air conditioner starts to run in a steady state, and after the running time h3 of the steady state (h3 is generally a preset value obtained by testing before the air conditioner leaves a factory), it can be considered that carbon dioxide exhaled by a closed human body in the room accumulates at a certain concentration, a fresh air function needs to be started, and the fresh air function is started at this moment. The starting gear of the fan can be determined according to the indoor temperature when the fresh air function is started, specifically, the low wind gear can be executed when the variation of the room temperature is detected to exceed a threshold value d1 within a statistical time h0, the medium wind gear is executed when the variation exceeds a threshold value d2, and the high wind gear is executed when the variation exceeds a threshold value d3, wherein d3 is larger than d2 and smaller than d1, and d1, d2 and d3 are generally obtained through tests before the air conditioner leaves a factory.
4. Automatic adjustment of a windscreen
After the fresh air function is started when the room working condition is normal, stable room environment parameters are detected to start changing, the room environment parameters need to be continuously collected, and the windshield is adjusted according to the following modes:
(a) as shown in fig. 3, if a wind speed reduction condition is detected, the wind speed of the first gear is reduced, and after a period of time, if the wind speed reduction condition is detected again, the new wind gear is continuously reduced until the lowest wind shield;
the wind speed reduction conditions are as follows: detecting that the indoor temperature or the indoor humidity starts to rise during refrigeration and exceeding a threshold value for a period of time; or detecting that the room temperature begins to drop when heating and exceeds a threshold value for a period of time;
(b) as shown in fig. 4, if a wind speed rising condition is detected, the wind speed of the first gear is raised, and after a period of time, if the wind speed rising condition is detected again, the new wind gear is continuously raised until the highest wind shield;
the wind speed rising condition is as follows: detecting that the indoor temperature or the indoor humidity begins to drop during refrigeration and exceeding a threshold value for a period of time; or detecting that the room temperature starts to rise when heating and exceeds a threshold value for a period of time;
(c) and when the fresh air function is put into use for a period of time, the room environment parameters are not obviously changed after the adjustment of the step (a) or the step (b), and the current fresh air gear is kept running when the variation is within the threshold value adjusted upwards or downwards.
Through above mode, the embodiment does not finally can detect room carbon dioxide concentration with the help of the carbon dioxide sensor, does not detect the closing condition of room door and window with the help of other equipment, discerns the airtight condition in room through humiture change statistical method, and long time when combining the steady operation of air conditioner, whether discernment room need open fresh air conditioner function of taking a breath, has avoided the carbon dioxide sensor to become invalid completely and has leaded to uncontrollable fresh air function problem.
Claims (4)
1. A fresh air conditioner control method is characterized in that after a fresh air conditioner is started, room environment parameters and air conditioner setting parameters are collected, wherein the room environment parameters comprise indoor temperature, outdoor temperature and indoor humidity, and the air conditioner setting parameters comprise a setting mode and a setting temperature; determining whether the room working condition is normal according to the collected room environment parameters and air conditioner setting parameters, and performing corresponding fresh air function control, wherein the step of determining whether the room working condition is normal comprises the following steps: if the set mode of the air conditioner is a heating mode, the recent indoor temperature is higher than the outdoor temperature, and the change trend of the indoor temperature is continuously increased, judging that the working condition of the room is normal, otherwise, judging that the working condition of the room is abnormal; if the air conditioner setting mode is a refrigeration/dehumidification mode, the recent indoor temperature is lower than the outdoor temperature, and the change trend of the indoor temperature is continuously reduced, the working condition of the room is judged to be normal, otherwise, the working condition of the room is judged to be abnormal, and when the working condition of the room is abnormal, the fresh air function control is carried out according to the following mode: and (4) starting the fresh air function, running for h2 time by using a low wind shield, then closing the fresh air function for h1 time, and circulating the steps.
2. The fresh air conditioning control method according to claim 1, wherein when the room operating condition is normal, the fresh air function control is performed in the following manner: continue to gather room environmental parameter, begin the timing when room temperature and humidity no longer change, open the new trend function behind time h3, continue to gather room environmental parameter after opening the new trend function to carry out the windscreen according to following mode and adjust:
(a) if the wind speed reduction condition is detected, reducing the wind speed of the first gear, and if the wind speed reduction condition is detected again after a period of time, continuing to reduce the new wind gear until the lowest wind shield;
the wind speed reduction conditions are as follows: detecting that the indoor temperature or the indoor humidity starts to rise during refrigeration and exceeding a threshold value for a period of time; or detecting that the room temperature begins to drop when heating and exceeds a threshold value for a period of time;
(b) if the wind speed rising condition is detected, the wind speed of the first gear is raised, and if the wind speed rising condition is detected again after a period of time, the new wind gear is continuously raised until the highest wind shield;
the wind speed rising condition is as follows: detecting that the indoor temperature or the indoor humidity begins to drop during refrigeration and exceeding a threshold value for a period of time; or detecting that the room temperature starts to rise when heating and exceeds a threshold value for a period of time;
(c) and when the fresh air function is put into use for a period of time, the room environment parameters are not obviously changed after the adjustment of the step (a) or the step (b), and the current fresh air gear is kept running when the variation is within the threshold value adjusted upwards or downwards.
3. The fresh air conditioner control method as claimed in claim 2, wherein when the room condition is normal, the start gear of the fan is determined according to the recent indoor temperature variation when the fresh air function is started.
4. The fresh air conditioning control method according to claim 1, wherein when the air conditioning setting mode is the ventilation mode, the fresh air function is directly started, and the fresh air function is controlled according to a control mode when the room operating condition is abnormal.
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| CN114151919B (en) * | 2021-11-29 | 2023-02-10 | 宁波奥克斯电气股份有限公司 | Fresh air control method and device and fresh air conditioner |
| CN114562795B (en) * | 2022-02-23 | 2024-04-12 | 武汉汉立制冷科技股份有限公司 | Refrigeration equipment self-starting control method with few operation steps |
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| JP2017504783A (en) * | 2014-11-21 | 2017-02-09 | シャオミ・インコーポレイテッド | Air quality acquisition method, air quality acquisition device, program, and recording medium |
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