CN111271808A - Indoor fresh air control method and device and air conditioner - Google Patents

Indoor fresh air control method and device and air conditioner Download PDF

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Publication number
CN111271808A
CN111271808A CN201911248148.6A CN201911248148A CN111271808A CN 111271808 A CN111271808 A CN 111271808A CN 201911248148 A CN201911248148 A CN 201911248148A CN 111271808 A CN111271808 A CN 111271808A
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indoor temperature
indoor
fresh air
carbon dioxide
dioxide concentration
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崔成辽
黄春
刘合心
魏文文
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Ningbo Aux Electric Co Ltd
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Ningbo Aux Electric Co Ltd
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Priority to CN201911248148.6A priority Critical patent/CN111271808A/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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—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)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides an indoor fresh air control method, an indoor fresh air control device and an air conditioner, wherein the indoor fresh air control device comprises the following steps: acquiring indoor temperature; when the indoor temperature meets a first preset condition, starting to detect the concentration of carbon dioxide, and recording the indoor temperature at the same time; at carbon dioxide concentration CCO2When the temperature exceeds the upper limit value m, starting a fresh air fan, and introducing fresh air and simultaneously regulating and controlling the indoor temperature; introducing fresh airThe process of simultaneously regulating the indoor temperature further comprises: at carbon dioxide concentration CCO2Not yet reduced to the lower limit value, but the room temperature TExample 2And when the second preset condition is met, the fresh air fan is turned off, and the indoor temperature is regulated and controlled. According to the indoor fresh air control method provided by the invention, when the indoor temperature meets the comfort requirement, the detection of the carbon dioxide concentration and the adjustment introduction of the fresh air are carried out, the rapid drop of the indoor temperature caused by the introduction of the fresh air is avoided, the indoor air quality is improved, and compared with the prior art that the indoor temperature is easy to change greatly when the fresh air is introduced, the comfort experience of a user is improved.

Description

Indoor fresh air control method and device and air conditioner
Technical Field
The invention relates to the field of air conditioners, in particular to an indoor fresh air control method and device and an air conditioner.
Background
The air conditioner has the functions of refrigeration, heating and dehumidification, but has little function of reducing the concentration of indoor carbon dioxide, as is known, the density of carbon dioxide is higher than that of air, when the carbon dioxide is low, the carbon dioxide is harmless to human bodies, but when the carbon dioxide exceeds a certain amount, the human breathing is influenced, and if the carbon dioxide is low, the human breathing is difficult, the head is dizzy and nausea, and if the carbon dioxide is high, people are suffocated and die. If the human body stays in the closed space for a long time, the air flowability of the closed space is poor, so that the carbon dioxide concentration is easily overhigh, and the human body feels uncomfortable.
The concentration of indoor carbon dioxide can be reduced through the introduction of fresh air, the indoor air quality can be improved, and the air conditioner is beneficial to the body health of a user. The method of introducing the new trend among the prior art starts or stops according to carbon dioxide concentration's height, low simply, though can be with room carbon dioxide concentration control at reasonable within range, but, introduce indoor with the unsuitable new trend of outdoor temperature easily at the new trend in-process, can cause indoor temperature's fluctuation by a wide margin, if indoor temperature that introduces the new trend and can make the room in summer becomes high, indoor temperature that introduces the new trend and can make the room in winter reduces, influences user's travelling comfort and experiences.
In addition, in a place with more people (such as a meeting room), users often feel more sensitive to temperature changes and have lower sensitivity to carbon dioxide concentration, so how to design an air conditioner control method does not affect comfort experience of the users while introducing fresh air to reduce the carbon dioxide concentration is a problem to be solved urgently in the technical field of air conditioners at present.
Disclosure of Invention
In view of this, the present invention aims to provide an indoor fresh air control method, an indoor fresh air control device and an air conditioner, so as to solve the problem that the comfort of a user is easily affected when fresh air is introduced into the air conditioner in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an indoor fresh air control method comprises the following steps:
acquiring indoor temperature;
when the indoor temperature meets a first preset condition, starting to detect the concentration of carbon dioxide, and recording the indoor temperature at the same time;
at carbon dioxide concentration CCO2When the temperature exceeds the upper limit value m, starting a fresh air fan, and introducing fresh air and simultaneously regulating and controlling the indoor temperature;
the process of introducing new trend and simultaneously regulating and controlling indoor temperature still includes: at carbon dioxide concentration CCO2Has not yet decreased to the lower limit value n, but has not yet decreased to the indoor temperature TExample 2And when the second preset condition is met, the fresh air fan is turned off, and the indoor temperature is regulated and controlled. Satisfy the comfort level standard at indoor temperature, carry out the detection of carbon dioxide concentration and the regulation of new trend again and introduce, ensure when introducing the new trend, indoor temperature is in user's comfortable within range, avoids leading to indoor temperature to drop sharply because the introduction of new trend, easily causes the indoor temperature to change greatly when introducing the new trend among the prior art and compares, improves user's comfort and experiences to when regulating and control indoor temperature, do not open new fan, have the effect of power saving.
Further, at a carbon dioxide concentration CCO2When surpassing upper limit value m, open new trend machine, begin to introduce the new trend and regulate and control indoor temperature simultaneously, still include:
continuously detecting indoor temperature T while introducing fresh airExample 2；
In the roomAnd when the temperature does not meet the second preset condition and the concentration of the carbon dioxide is not reduced to be lower than the lower limit value n, keeping the fresh air fan on, and continuously detecting the indoor temperature. Carbon dioxide concentration CCO2When exceeding the upper limit, explain that surpass user's comfort level scope, need introduce the new trend in order to reduce indoor carbon dioxide concentration, but still need continuously detect indoor temperature when introducing the new trend, the indoor temperature of being convenient for control can not fluctuate by a wide margin, improves indoor comfort level.
Furthermore, the indoor temperature T is continuously detected while the fresh air is introducedExample 2Then, the method further comprises the following steps:
at room temperature TExample 2Does not satisfy the second predetermined condition, carbon dioxide concentration CCO2When the temperature is reduced to be below the lower limit value n, the fresh air fan and the carbon dioxide detection are turned off, and the indoor temperature is regulated normally;
at room temperature TExample 2When the second preset condition is met, the fresh air fan and the carbon dioxide concentration detection system are turned off, and the indoor temperature T is preferentially regulated and controlledExample 2。
Because the sensitivity of the user to the indoor temperature is greater than the sensitivity to the indoor carbon dioxide concentration, the indoor temperature is preferentially ensured not to generate large fluctuation in the process of introducing the fresh air to reduce the indoor carbon dioxide concentration, the comfort level of the indoor environment is ensured, and if the indoor temperature fluctuation exceeds a certain range, the fresh air machine is preferentially closed, so that the indoor temperature is mainly regulated and controlled.
Further, after acquiring the indoor temperature, the method further comprises:
and when the indoor temperature does not meet the first preset condition, closing the carbon dioxide concentration detection and continuously regulating and controlling the indoor temperature. The first preset condition is that the indoor temperature reaches the temperature condition within the comfort level range after the user starts the machine, and when the indoor temperature does not reach the comfort level condition, the detection of the concentration of carbon dioxide is not carried out, and only the indoor temperature is regulated.
Further, after the indoor temperature meets a first preset condition, the method further includes:
detecting the carbon dioxide concentration CCO2Record the indoor temperature T at this momentFruit of Chinese wolfberry；
At carbon dioxide concentration CCO2When the concentration exceeds the upper limit value m, the fresh air fan is started to introduce fresh air, and the carbon dioxide concentration C isCO2When the indoor temperature does not exceed the upper limit value m, the indoor temperature is normally regulated and controlled, and the indoor carbon dioxide concentration C is continuously detectedCO2. Only at carbon dioxide concentration CCO2When surpassing the comfort level scope, just open new fan and introduce the new trend, with prior art in the new fan remain throughout to open, only adjust through reducing or opening big amount of wind and compare, not only guarantee indoor comfort level, and have the effect of power saving.
Further, the first preset condition is as follows: t isFruit of Chinese wolfberry≤TIs provided with+ΔT1Or TFruit of Chinese wolfberry≧TIs provided with-ΔT1. When the air conditioner is used for refrigerating or heating, the indoor temperature is close to the temperature set by a user when the air conditioner is started before the carbon dioxide concentration is detected.
Further, the second preset condition is that: t isExample 2＞TFruit of Chinese wolfberry+ΔT2Or TExample 2＜TFruit of Chinese wolfberry-ΔT2. Guarantee to be opening the in-process that new fan introduced the new trend, indoor temperature fluctuation is little, reduces the influence to the comfort level.
Compared with the prior art, the indoor fresh air control method has the following advantages:
according to the indoor fresh air control method provided by the invention, when the indoor temperature is in the first preset condition, the detection of the carbon dioxide concentration and the adjustment introduction of the fresh air are carried out, the indoor air quality is improved, and the indoor temperature is ensured to be in the comfortable range of a user when the fresh air is introduced, so that the indoor temperature cannot be rapidly reduced due to the introduction of the fresh air. Compared with the method of adjusting the indoor temperature by only reducing or opening the air volume to adjust the air intake, the method has the advantages of saving electricity, quickly adjusting the indoor temperature and improving the comfort level.
And when the concentration of indoor carbon dioxide is regulated and controlled after the fresh air is introduced, the priority for controlling the indoor temperature is higher than the priority for controlling the concentration of the carbon dioxide, so that the situation that the temperature in the control room is not greatly fluctuated in the process of regulating the concentration of the carbon dioxide by introducing the fresh air is ensured, meanwhile, the concentration of the carbon dioxide can be reduced to a certain degree, the balance of health degree and comfort degree is realized, and the requirement for the comfort degree of a user is greatly improved.
The invention also provides an indoor fresh air control device, which comprises:
a detection unit for detecting an indoor temperature and a carbon dioxide concentration;
the judging unit is used for judging whether the indoor temperature meets a first preset condition or a second preset condition or not and judging whether the indoor carbon dioxide concentration exceeds an upper limit value or is lower than a lower limit value or not;
and the control unit is used for controlling the fresh air fan and the detection unit to be switched on and off according to the indoor temperature and the carbon dioxide concentration.
The invention also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the indoor fresh air control method.
Compared with the prior art, the air conditioner and the indoor fresh air control method have the same advantages, and are not repeated herein.
The invention also provides a computer readable storage medium, wherein a computer program is stored in the computer readable storage medium, and when the computer program is read and run by a processor, the indoor fresh air control method is realized.
Drawings
FIG. 1 is a flow chart of an indoor fresh air control method according to an embodiment of the present invention;
fig. 2 is a flow chart of an indoor fresh air control method in a refrigeration mode according to an embodiment of the present invention;
fig. 3 is a flowchart of an indoor fresh air control method in the heating mode according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Example 1
As shown in fig. 1, the indoor fresh air control method provided by the invention comprises the following steps:
step S100, acquiring indoor temperature;
before detecting the indoor carbon dioxide concentration, firstly, acquiring the indoor temperature, wherein the indoor temperature is obtained through a detection unit for detecting the indoor temperature, the detection unit sends the detected indoor temperature to a control unit, and the control unit makes corresponding judgment after receiving a signal of the indoor temperature.
Step S200, when the indoor temperature meets a first preset condition, starting to detect the concentration of carbon dioxide, and simultaneously recording the indoor temperature T at the momentFruit of Chinese wolfberry；
Due to the indoor temperature T of the userFruit of Chinese wolfberryIs higher than the sensitivity to carbon dioxide, so that the indoor temperature T is judged at the control unitFruit of Chinese wolfberryWhen the first preset condition is met, the carbon dioxide concentration is detected, and when the indoor temperature T is reachedFruit of Chinese wolfberryWhen the first preset condition is not met, the carbon dioxide concentration detection is turned off, the indoor temperature is continuously regulated and controlled, and the comfort level of a user is improved.
Further, the first preset condition is as follows: t isFruit of Chinese wolfberry≤TIs provided with+ΔT1Or TFruit of Chinese wolfberry≧TIs provided with-ΔT1Wherein T isIs provided withTarget temperature, Δ T, set by a user when the air conditioner is turned on1Is a range obtained from empirical values. Wherein Δ T1The air conditioner can be stored in a storage system of the air conditioner before the air conditioner leaves a factory, and can also be set by a user according to the self requirement when the air conditioner is started. Preferably,. DELTA.T11 ℃, the sensitivity of the detection unit is improved while ensuring indoor comfort.
Step S300, at carbon dioxide concentration CCO2When the temperature exceeds the upper limit value m, the fresh air fan is started to introduce fresh air and regulate and control the indoor temperature T simultaneouslyExample 2。
Introducing fresh air and adjusting simultaneouslyThe process of controlling the indoor temperature further includes: when the concentration of carbon dioxide is CCO2Has not yet decreased to the lower limit value n, but has not yet decreased to the indoor temperature TExample 2And if the second preset condition is met, the new fan is closed to preferentially regulate and control the indoor temperature.
Preferably, the upper limit value m and the lower limit value n are set according to the comfort level felt by the user and the sensitivity to the carbon dioxide concentration, and may be stored in a storage system of the air conditioner before the air conditioner leaves a factory, or may be set by the user according to the needs and habits of the user when the air conditioner is started. Wherein the range of the upper limit value m is as follows: 1000 ppm. + -.10 ppm, more preferably, the upper limit value m is 1000 ppm. The lower limit n is m 0.8, and n ranges from: 800 ppm. + -.10 ppm, more preferably the lower limit n is 800 ppm.
Further, the second preset condition is as follows: t isExample 2＞TFruit of Chinese wolfberry+ΔT2Or TExample 2＜TFruit of Chinese wolfberry-ΔT2Wherein T isFruit of Chinese wolfberryTo start detecting the carbon dioxide concentration CCO2The indoor temperature of the time; delta T2Normal fluctuation range of indoor temperature within comfort range for user, where Δ T2The air conditioner can be stored in a storage system of the air conditioner before the air conditioner leaves a factory, and can also be set by a user according to the self requirement when the air conditioner is started. Preferably,. DELTA.T23 deg.C to ensure indoor temperature at CCO2Fluctuation in the physical range and improvement of indoor comfort.
Further, step S300 includes the following process:
step S310, continuously detecting the indoor temperature T while introducing fresh airExample 2；
Step S320, at indoor temperature TExample 2Does not satisfy the second predetermined condition, carbon dioxide concentration CCO2When the temperature is reduced to be lower than the lower limit value n, the fresh air fan and the carbon dioxide detection are turned off, the indoor temperature is regulated normally, and the step S350 is executed; prevent that a large amount of new trend from introducing and causing that indoor temperature fluctuates by a wide margin, promote the comfort level.
Step S330, at indoor temperature TExample 2Does not satisfy the second predetermined condition, carbon dioxide concentration CCO2When the temperature does not fall below the lower limit value n, the fresh air fan is kept started, andthe indoor temperature is continuously detected, and the process returns to step S310.
Step S340, at indoor temperature TExample 2Satisfies the second predetermined condition regardless of the carbon dioxide concentration CCO2If the temperature is reduced to the lower limit value n, the fresh air fan and the carbon dioxide concentration detection system are closed, and the indoor temperature T is preferentially regulated and controlledExample 2And step S350 is performed.
Step S350, when the indoor temperature T is higherExample 2When the first preset condition is met, the carbon dioxide concentration C starts to be detectedCO2；
Step S360, if the carbon dioxide concentration C is detectedCO2When the indoor temperature exceeds the upper limit m, the operation returns to the step S310, the fresh air fan is started to introduce fresh air, and meanwhile, the indoor temperature T is continuously detectedExample 2；
Step S370, if the carbon dioxide concentration C is detectedCO2When the upper limit m is not exceeded, the indoor temperature T is normally regulatedExample 2And continuously detecting the indoor carbon dioxide concentration.
The new trend control method that this embodiment provided, when indoor temperature satisfies first preset condition, carry out the detection of carbon dioxide concentration and the regulation of new trend again and introduce, improve the indoor air quality, and ensure when introducing the new trend, indoor temperature is in user's comfortable within range, can not lead to indoor temperature to drop sharply because of the introduction of new trend, easily cause the indoor temperature to change by a wide margin when introducing the new trend among the prior art and compare, improve user's comfort and experience, and when regulating and control indoor temperature, do not open new fan, with the new fan among the prior art keep opening all the time. Compared with the method of adjusting the indoor temperature by only reducing or opening the air volume to adjust the air intake, the method has the advantages of saving electricity, quickly adjusting the indoor temperature and improving the comfort level.
And when the concentration of indoor carbon dioxide is regulated and controlled after the fresh air is introduced, the priority for controlling the indoor temperature is higher than the priority for controlling the concentration of the carbon dioxide, so that the situation that the temperature in the control room is not greatly fluctuated in the process of regulating the concentration of the carbon dioxide by introducing the fresh air is ensured, meanwhile, the concentration of the carbon dioxide can be reduced to a certain degree, the balance of health degree and comfort degree is realized, and the requirement for the comfort degree of a user is greatly improved.
Example 2
As shown in fig. 2, this embodiment provides, on the basis of embodiment 1, a method for controlling fresh air indoors when an air conditioner is in a cooling mode, which specifically includes the following steps:
step S100, acquiring indoor temperature;
step S101, judging whether the indoor temperature meets a first preset condition, if so, recording the indoor temperature T at the momentFruit of Chinese wolfberryStep S201 is executed, the carbon dioxide concentration detection is started, if not, the carbon dioxide concentration detection is closed, and the indoor temperature is continuously regulated and controlled;
wherein the first preset condition is as follows: t isFruit of Chinese wolfberry≤TIs provided with+ΔT1I.e. at room temperature TFruit of Chinese wolfberryWhen the temperature is reduced to the set temperature close to the startup of the user, the indoor carbon dioxide concentration is detected, and the indoor comfort level is ensured.
Step S201, detecting the concentration C of carbon dioxideCO2Record the indoor temperature T at this momentFruit of Chinese wolfberry；
Step S202, determining the indoor carbon dioxide concentration CCO2Whether the upper limit value m is exceeded or not; if yes, the indoor carbon dioxide concentration C is indicatedCO2Too high, influence health, need to open new fan and introduce new trend in order to reduce indoor carbon dioxide concentration CCO2Executing step S301; if not, the indoor carbon dioxide concentration C is indicatedCO2Not exceeding the comfortable range of the user, normally regulating and controlling the indoor temperature and continuously detecting the indoor carbon dioxide concentration CCO2；
Step S301, continuously detecting indoor temperature T while introducing fresh airExample 2；
The continuous detection of the indoor temperature is to detect the indoor temperature once every unit time, preferably, once every 5 seconds.
Step S302, judging the indoor temperature TExample 2Whether a second preset condition is met, if not, indicating that the indoor temperature is not greatly increased when fresh air is introduced, executing step S303, and judging the indoor carbon dioxide concentration CCO2Whether or not to fall below a lower limit value; if so,then, the indoor temperature is greatly increased after the fresh air is introduced, and the increment of the indoor temperature exceeds the comfort range of the user, step S304 is executed, and the indoor fresh air fan is turned off.
Wherein the second preset condition is: t isExample 2＞TFruit of Chinese wolfberry+ΔT2That is, when the temperature in the room is too high due to the introduction of the fresh air, the discomfort of the indoor user is caused, the introduction of the fresh air needs to be stopped, and the indoor temperature is preferentially regulated.
Step S303, judging the indoor carbon dioxide concentration CCO2Whether the value is reduced below a lower limit value n; if yes, the carbon dioxide concentration C in the room is indicated when the indoor temperature is not greatly increasedCO2Having decreased below the lower limit value, go to step S304; if not, the indoor carbon dioxide concentration C is indicatedCO2If the temperature is not reduced below the lower limit value, keeping the fresh air fan started, continuously detecting the indoor temperature, and returning to the step S302;
the continuous detection of the indoor temperature is to detect the indoor temperature once every unit time, preferably, once every 5 seconds.
Step S304, closing the indoor fresh air fan and detecting the concentration of carbon dioxide, adjusting the indoor temperature, and executing step S305;
step S305, judging the indoor temperature TExample 2And if the first preset condition is met, starting carbon dioxide concentration detection, executing step S201, otherwise, executing step S304, and continuously regulating and controlling the indoor temperature.
Wherein the first preset condition is as follows: t isExample 2≤TIs provided with+ΔT1I.e. at room temperature TExample 2When the temperature is reduced to the set temperature close to the startup of the user, the indoor carbon dioxide concentration is detected, and the indoor comfort level is ensured.
Example 3
As shown in fig. 3, the present embodiment provides an indoor fresh air control method when an air conditioner is in a heating mode, which specifically includes the following steps:
step S100, acquiring indoor temperature;
step S101, judging whether the indoor temperature meets a first preset condition, if so, recordingLower time indoor temperature TFruit of Chinese wolfberryStep S201 is executed, the carbon dioxide concentration detection is started, if not, the carbon dioxide concentration detection is closed, and the indoor temperature is continuously regulated and controlled;
wherein the first preset condition is as follows: t isFruit of Chinese wolfberry≥TIs provided with-ΔT1I.e. at room temperature TFruit of Chinese wolfberryWhen the temperature rises to the set temperature close to the startup of the user, the indoor carbon dioxide concentration starts to be detected, and the indoor comfort level is ensured.
Step S201, detecting the concentration C of carbon dioxideCO2Record the indoor temperature T at this momentFruit of Chinese wolfberry；
Step S202, determining the indoor carbon dioxide concentration CCO2Whether the upper limit value m is exceeded or not; if yes, the indoor carbon dioxide concentration C is indicatedCO2Too high, affecting health, and introducing fresh air to reduce indoor carbon dioxide concentration CCO2Step S31 is executed; if not, the indoor carbon dioxide concentration C is indicatedCO2Not exceeding the comfortable range of the user, normally regulating and controlling the indoor temperature and continuously detecting the indoor carbon dioxide concentration CCO2；
Step S301, continuously detecting indoor temperature T while introducing fresh airExample 2；
The continuous detection of the indoor temperature is to detect the indoor temperature once every unit time, preferably, once every 5 seconds.
Step S302, judging the indoor temperature TExample 2Whether a second preset condition is met, if not, indicating that the indoor temperature is not greatly reduced when fresh air is introduced, executing step S303, and judging the indoor carbon dioxide concentration CCO2Whether or not to fall below a lower limit value; if so, it is indicated that the indoor temperature is greatly reduced after the fresh air is introduced, and the change of the indoor temperature exceeds the comfort range of the user, step S304 is executed, and the indoor fresh air fan is turned off.
Wherein the second preset condition is: t isExample 2＜TFruit of Chinese wolfberry-ΔT2That is, when the temperature in the room is reduced too much due to the introduction of the fresh air, discomfort of the indoor user is caused, the introduction of the fresh air needs to be stopped, and the indoor temperature is preferentially regulated.
In the step of S303, the process is executed,judging the indoor carbon dioxide concentration CCO2Whether the value is reduced below a lower limit value n; if yes, the carbon dioxide concentration C in the room is indicated when the indoor temperature is not greatly reducedCO2Having decreased below the lower limit value, go to step S304; if not, the indoor carbon dioxide concentration C is indicatedCO2If the temperature is not reduced below the lower limit value, keeping the fresh air fan started, continuously detecting the indoor temperature, and returning to the step S302;
the continuous detection of the indoor temperature is to detect the indoor temperature once every unit time, preferably, once every 5 seconds.
Step S304, closing the indoor fresh air fan and detecting the concentration of carbon dioxide, adjusting the indoor temperature, and executing step S305;
step S305, judging the indoor temperature TExample 2And if the first preset condition is met, starting carbon dioxide concentration detection, executing step S201, otherwise, executing step S304, and continuously regulating and controlling the indoor temperature.
Wherein the first preset condition is as follows: t isExample 2≥TIs provided with-ΔT1I.e. at room temperature TExample 2When the temperature rises to the set temperature close to the startup of the user, the indoor carbon dioxide concentration starts to be detected, and the indoor comfort level is ensured.
As a part of the embodiments of the present invention, there is also provided an indoor fresh air control apparatus, including:
a detection unit for detecting an indoor temperature and a carbon dioxide concentration;
the judging unit is used for judging whether the indoor temperature meets a first preset condition or a second preset condition or not and judging whether the indoor carbon dioxide concentration exceeds an upper limit value or is lower than a lower limit value or not;
the control unit is used for controlling the fresh air fan and the detection unit to be switched on and off according to the indoor temperature and the carbon dioxide concentration;
generally, when the indoor temperature meets a first preset condition, the control unit controls the detection unit to start detecting the concentration of carbon dioxide, when the concentration of carbon dioxide exceeds an upper limit value, the control unit controls the fresh air fan to be started, and when the indoor temperature does not meet a second preset condition, the control unit controls the fresh air fan to be stopped, and when the concentration of carbon dioxide is lower than a lower limit value.
As a part of the embodiments of the present invention, an air conditioner is further provided, which includes a computer readable storage medium storing a computer program and a processor, wherein when the computer program is read and executed by the processor, any one of the above indoor fresh air control methods is implemented.
As a part of the embodiments of the present invention, a computer-readable storage medium is further provided, where a computer program is stored, and when the computer program is read and executed by a processor, the computer program implements any one of the above-mentioned indoor fresh air control methods.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. An indoor fresh air control method is characterized by comprising the following steps:
acquiring indoor temperature;
when the indoor temperature meets a first preset condition, starting to detect the concentration of carbon dioxide, and recording the indoor temperature at the same time;
at carbon dioxide concentration CCO2When the temperature exceeds the upper limit value m, starting a fresh air fan, and introducing fresh air and simultaneously regulating and controlling the indoor temperature;
the process of introducing new trend and simultaneously regulating and controlling indoor temperature still includes: at carbon dioxide concentration CCO2Has not yet decreased to the lower limit value n, but has not yet decreased to the indoor temperature TExample 2And when the second preset condition is met, the fresh air fan is turned off, and the indoor temperature is regulated and controlled.
2. Indoor fresh air control method according to claim 1, characterized in that at the carbon dioxide concentration CCO2When surpassing upper limit value m, open new trend machine, begin to introduce the new trend and regulate and control indoor temperature simultaneously, still include:
continuously detecting indoor temperature T while introducing fresh airExample 2；
And when the indoor temperature does not meet the second preset condition and the concentration of the carbon dioxide is not reduced to be lower than the lower limit value n, keeping the fresh air fan on, and continuously detecting the indoor temperature.
3. An indoor fresh air control method according to claim 2, wherein the indoor temperature T is continuously detected while fresh air is introducedExample 2Then, the method further comprises the following steps:
at room temperature TExample 2Does not satisfy the second predetermined condition, carbon dioxide concentration CCO2When the temperature is reduced to be below the lower limit value n, the fresh air fan and the carbon dioxide detection are turned off, and the indoor temperature is regulated normally;
at room temperature TExample 2When the second preset condition is met, the fresh air fan and the carbon dioxide concentration detection system are turned off, and the indoor temperature T is preferentially regulated and controlledExample 2。
4. The indoor fresh air control method according to claim 1, further comprising, after acquiring the indoor temperature:
and when the indoor temperature does not meet the first preset condition, closing the carbon dioxide concentration detection and continuously regulating and controlling the indoor temperature.
5. The indoor fresh air control method according to claim 1, further comprising, after the indoor temperature satisfies a first preset condition:
detecting carbon dioxide concentration
Figure FDA0002308258990000021
Record the indoor temperature T at this momentFruit of Chinese wolfberry；
At the carbon dioxide concentration
Figure FDA0002308258990000022
When the concentration of carbon dioxide exceeds the upper limit value m, the fresh air fan is started to introduce fresh air
Figure FDA0002308258990000023
When the indoor temperature does not exceed the upper limit value m, the indoor temperature is normally regulated and controlled, and the indoor carbon dioxide concentration is continuously detected
Figure FDA0002308258990000024
6. An indoor fresh air control method according to claim 1, 4 or 5, wherein the first preset condition is: t isFruit of Chinese wolfberry≤TIs provided with+ΔT1Or TFruit of Chinese wolfberry≧TIs provided with-ΔT1。
7. An indoor fresh air control method according to any one of claims 1 to 3, wherein the second preset condition is: t isExample 2＞TFruit of Chinese wolfberry+ΔT2Or TExample 2＜TFruit of Chinese wolfberry-ΔT2。
8. An indoor fresh air control device, comprising:
a detection unit for detecting an indoor temperature and a carbon dioxide concentration;
the judging unit is used for judging whether the indoor temperature meets a first preset condition or a second preset condition or not and judging whether the indoor carbon dioxide concentration exceeds an upper limit value or is lower than a lower limit value or not;
and the control unit is used for controlling the fresh air fan and the detection unit to be switched on and off according to the indoor temperature and the carbon dioxide concentration.
9. An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the method of any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method according to any one of claims 1-7.
CN201911248148.6A 2019-12-09 2019-12-09 Indoor fresh air control method and device and air conditioner Pending CN111271808A (en)

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Publication number Priority date Publication date Assignee Title
CN112944560A (en) * 2021-02-05 2021-06-11 青岛海尔空调电子有限公司 Fresh air ventilation system and ventilation control method and device thereof at night in winter
CN113606660A (en) * 2021-08-04 2021-11-05 珠海格力电器股份有限公司 Air conditioner fresh air control method and air conditioner
CN113932398A (en) * 2020-07-13 2022-01-14 海信（山东）空调有限公司 Air conditioner and carbon dioxide concentration detection method
CN114138038A (en) * 2021-11-29 2022-03-04 广东鑫钻节能科技股份有限公司 Air purification system based on air compression station

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN113932398A (en) * 2020-07-13 2022-01-14 海信（山东）空调有限公司 Air conditioner and carbon dioxide concentration detection method
CN113932398B (en) * 2020-07-13 2023-06-09 海信空调有限公司 Air conditioner and carbon dioxide concentration detection method
CN112944560A (en) * 2021-02-05 2021-06-11 青岛海尔空调电子有限公司 Fresh air ventilation system and ventilation control method and device thereof at night in winter
CN113606660A (en) * 2021-08-04 2021-11-05 珠海格力电器股份有限公司 Air conditioner fresh air control method and air conditioner
CN114138038A (en) * 2021-11-29 2022-03-04 广东鑫钻节能科技股份有限公司 Air purification system based on air compression station

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