CN108644972B - Anti-freezing control system and anti-freezing control method for ceiling fresh air ventilator - Google Patents
Anti-freezing control system and anti-freezing control method for ceiling fresh air ventilator Download PDFInfo
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- CN108644972B CN108644972B CN201810246866.9A CN201810246866A CN108644972B CN 108644972 B CN108644972 B CN 108644972B CN 201810246866 A CN201810246866 A CN 201810246866A CN 108644972 B CN108644972 B CN 108644972B
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- 238000007710 freezing Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 27
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 72
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 47
- 239000001569 carbon dioxide Substances 0.000 claims description 36
- 239000012855 volatile organic compound Substances 0.000 claims description 36
- 238000009423 ventilation Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 4
- 238000000746 purification Methods 0.000 abstract description 11
- 238000004378 air conditioning Methods 0.000 abstract description 2
- 238000003908 quality control method Methods 0.000 abstract 1
- 239000013618 particulate matter Substances 0.000 description 21
- 238000010586 diagram Methods 0.000 description 13
- 239000004973 liquid crystal related substance Substances 0.000 description 10
- 239000000428 dust Substances 0.000 description 8
- 238000001914 filtration Methods 0.000 description 7
- 108010053481 Antifreeze Proteins Proteins 0.000 description 6
- 230000002528 anti-freeze Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 238000004887 air purification Methods 0.000 description 4
- 230000009290 primary effect Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 239000003570 air Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004630 mental health Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
- F24F11/41—Defrosting; Preventing freezing
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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
-
- 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
- F24F2110/12—Temperature of the outside air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
- Ventilation (AREA)
Abstract
The invention relates to the field of indoor air conditioning, in particular to an anti-freezing control system and an anti-freezing control method for a suspended ceiling fresh air ventilator. The intelligent air quality control system is mainly realized through an intelligent mode of an intelligent control module, in an intelligent mode state, an air quality sensor module and an air temperature module send detected air quality data and indoor and outdoor air temperature data to a microprocessor, and the microprocessor compares the detected air quality data and the detected indoor and outdoor air temperature data with a preset air quality set value and a preset indoor and outdoor air temperature set value respectively to control the work of a fresh air motor, an exhaust air motor, a switching valve and a PTC electric heater. The invention enables the suspended ceiling fresh air ventilator to realize the replacement, purification and flow of indoor air in extremely cold weather, thereby improving the indoor air quality.
Description
Technical Field
The invention relates to an anti-freezing control system and an anti-freezing control method for a suspended ceiling fresh air ventilator, and belongs to the field of indoor air conditioning.
Background
The suspended ceiling fresh air ventilator is used as one kind of fresh air ventilator, is installed on a ceiling, can independently perform indoor air replacement, purification and flow, inputs outdoor natural fresh air (fresh air for short) while removing indoor polluted air, and sends the input indoor fresh air into a room after multiple treatments of effective filtration, sterilization, oxygenation, disinfection, preheating (when the outdoor air is cold) and the like.
As shown in fig. 1, the conventional ceiling fresh air ventilator includes a ventilation host and an intelligent controller electrically connected to the ventilation host, and the ventilation host includes a fresh air motor, an air exhaust motor, a heat exchanger, a fresh air primary filter screen, a fresh air high efficiency filter screen and an air exhaust primary filter screen. The traditional ceiling fresh air ventilator exchanges heat between outdoor introduced air and indoor discharged air in the heat exchanger through the outdoor circulating air duct and the indoor circulating air duct, the heat exchange efficiency is about 60% -70%, the outdoor introduced air is sent into the room after the temperature of the outdoor introduced air is close to the temperature of the indoor air, and the fresh air primary filter screen, the fresh air efficient filter screen and the air exhaust primary filter screen are arranged in the indoor circulating air duct and the outdoor circulating air duct, so that high-performance and efficient air exchange can be continuously provided.
In cold winter in north, the outdoor temperature is usually about minus 20 degrees, the lowest temperature of regions such as Harbin is minus 20 degrees to minus 30 degrees, and under the severe weather, when the indoor PM is used2.5When the concentration, the carbon dioxide concentration and the volatile organic compound content are high, the ceiling fresh air ventilator starts to introduce outdoor fresh air for air purification.
However, if outdoor fresh air is introduced for a long time due to low outdoor temperature, the heat exchanger is frosted, so that the heat exchanger cannot normally perform heat exchange, the indoor temperature is reduced, and the indoor comfort is greatly influenced.
At present, when most of traditional ceiling fresh air ventilators detect that the outdoor temperature is lower than zero, the whole machine can enter an anti-freezing mode, namely, the fresh air volume introduced from the outdoor is reduced or the introduction of fresh air is stopped, so that the replacement, purification and flow of indoor air cannot be realized, the quality of the indoor air is reduced, along with the reduction of the quality of the indoor air, dust, fine particle pollutants, bacteria, viruses and the like in the indoor air are increased day by day, and if the ventilator is used for a long time, the ventilator can cause great harm to the physical and mental health of people.
Disclosure of Invention
In order to solve the technical problems, the invention provides an anti-freezing control system and an anti-freezing control method for a suspended ceiling fresh air ventilator.
According to one aspect of the invention, a control system for preventing freezing of a ceiling fresh air ventilator is provided, which comprises:
a ventilation main unit for introducing outdoor air into a room or discharging indoor air to the outside;
an inner and outer circulation switcher for switching from an outer circulation to an inner circulation or vice versa;
and the intelligent control module is used for controlling the work of the ventilation host and the internal and external circulation switcher.
Further, the ventilation host comprises:
the fresh air motor is used for introducing outdoor air into the room through the outdoor circulating air duct;
the fresh air primary filter screen is used for filtering large-particle dust in outdoor air;
the fresh air high-efficiency filter screen is used for filtering small particle dust in outdoor air;
the air exhaust motor is used for exhausting indoor air to the outside through the indoor circulating air duct;
the primary air exhaust filter screen is used for filtering large-particle dust in indoor air;
and a heat exchanger for heat-exchanging air introduced from the outside with air discharged from the inside.
Further, the inner and outer circulation switcher includes:
a switching valve for switching from the external circulation to the internal circulation or switching the internal circulation to the external circulation;
and an electric heater for heating the introduced outdoor air.
Further, the intelligent control module comprises:
the air quality sensor module is used for detecting the indoor air quality and uploading the detected indoor air quality data to the microprocessor;
the air temperature sensor module is used for detecting the indoor air temperature and the outdoor air temperature and uploading the detected indoor air temperature and outdoor air temperature data to the microprocessor;
the microprocessor is used for comparing the detected indoor air quality data with an indoor air quality set value to obtain an indoor air quality comparison result, comparing the detected indoor air temperature data and the detected outdoor air temperature data with an indoor air temperature set value and an outdoor air temperature set value respectively to obtain an indoor air temperature comparison result and an outdoor air temperature comparison result, and uploading the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result to the controller module;
and the controller module is used for controlling the work of the fresh air motor, the air exhaust motor, the switching valve and the electric heater according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result.
Furthermore, the intelligent control module also comprises a liquid crystal display switch, the liquid crystal display switch comprises a liquid crystal display screen and a control switch, the control switch is used for receiving input signals of a starting-up mode, a shutdown mode, an operation mode, a fresh air motor/exhaust motor gear, an indoor air quality set value, an indoor air temperature set value and an outdoor air temperature set value, and the detection signals of the air quality sensor module and the air temperature sensor module, the liquid crystal display screen is used for displaying the starting-up, the shutdown, the operation mode, the gear of the fresh air motor/the exhaust motor, the set value of the indoor air quality, the set value of the indoor air temperature and the set value of the outdoor air temperature, and indoor air quality data, indoor air temperature data and outdoor air temperature data detected by the air quality sensor module and the air temperature sensor module.
Further, the air quality sensor module includes:
indoor PM2.5Concentration sensor for detecting indoor PM2.5Concentration of indoor PM to be detected2.5Uploading the concentration data to a microprocessor;
the indoor volatile organic compound concentration sensor is used for detecting the concentration of indoor volatile organic compounds and uploading the detected indoor volatile organic compound concentration data to the microprocessor;
and the indoor carbon dioxide concentration sensor is used for detecting the indoor carbon dioxide concentration and uploading the detected indoor carbon dioxide concentration data to the microprocessor.
Further, the air quality setpoint includes indoor PM2.5A concentration set value, an indoor volatile organic compound concentration set value and an indoor carbon dioxide concentration set value.
Further, the air temperature sensor module includes:
the indoor air temperature sensor is used for detecting the indoor air temperature and uploading the detected indoor air temperature data to the microprocessor;
and the outdoor air temperature sensor is used for detecting the outdoor air temperature and uploading the detected outdoor air temperature data to the microprocessor.
Further, the controller module includes:
the fresh air motor controller is used for controlling the work of the fresh air motor according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result;
the air exhaust motor controller is used for controlling the work of the air exhaust motor according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result;
the switching valve controller is used for controlling the switching valve to work according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result;
and the electric heater controller is used for controlling the work of the electric heater according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result.
According to another aspect of the invention, a method for anti-freezing control by using the suspended ceiling fresh air ventilator anti-freezing control system is provided, which comprises the following steps:
detecting the indoor air quality through an air quality sensor module, and uploading detected indoor air quality data to a microprocessor;
the air temperature sensor module is used for detecting the indoor air temperature and the outdoor air temperature and uploading the detected data of the indoor air temperature and the outdoor air temperature to the microprocessor;
comparing the detected indoor air quality data with an indoor air quality set value through a microprocessor to obtain an indoor air quality comparison result, comparing the detected indoor air temperature data and the detected outdoor air temperature data with an indoor air temperature set value and an outdoor air temperature set value respectively to obtain an indoor air temperature comparison result and an outdoor air temperature comparison result, and uploading the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result to a controller module;
the controller module controls the fresh air motor, the air exhaust motor, the switching valve and the electric heater to work according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result.
Further, the detecting the indoor air quality through the air quality sensor module and uploading the detected indoor air quality data to the microprocessor includes:
by indoor PM2.5Concentration sensor to indoor PM2.5Detecting the concentration of PM in the room, and detecting the PM in the room2.5Uploading the concentration data to a microprocessor;
detecting the concentration of indoor volatile organic compounds through an indoor volatile organic compound concentration sensor, and uploading the detected concentration data of the indoor volatile organic compounds to a microprocessor;
the indoor carbon dioxide concentration is detected through the indoor carbon dioxide concentration sensor, and the detected indoor carbon dioxide concentration data are uploaded to the microprocessor.
Further, the detecting the indoor air temperature and the outdoor air temperature by the air temperature sensor module, and uploading the detected indoor air temperature and outdoor air temperature data to the microprocessor includes:
detecting the indoor air temperature through an indoor air temperature sensor, and uploading the detected indoor air temperature data to a microprocessor;
the outdoor air temperature is detected by the outdoor air temperature sensor, and the detected outdoor air temperature data is uploaded to the microprocessor.
Further, the comparing, by the microprocessor, the detected indoor air quality data with the indoor air quality set value includes:
detecting indoor PM through the microprocessor2.5The concentration data, the indoor volatile organic compound concentration data and the indoor carbon dioxide concentration data are respectively compared with the indoor PM2.5And comparing the concentration set value, the indoor volatile organic compound concentration set value and the indoor carbon dioxide concentration set value.
Further, the controller module controls the fresh air motor, the exhaust motor, the switching valve and the electric heater to work according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result, and the controller module comprises:
the fresh air motor controller controls the fresh air motor to work according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result;
the air exhaust motor controller controls the work of the air exhaust motor according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result;
the switching valve controller controls the switching valve to work according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result;
the electric heater controller controls the electric heater to work according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result.
The anti-freezing control system and the anti-freezing control method thereof provided by the invention enable the suspended ceiling fresh air ventilator to realize the replacement, purification and flow of indoor air in extremely cold weather, thereby improving the indoor air quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions and advantages of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a conventional drop ceiling fresh air ventilator;
FIG. 2 is a system block diagram of an anti-freezing control system of a suspended ceiling fresh air ventilator according to the present invention;
FIG. 3 is a block diagram of the ventilation system of the present invention;
FIG. 4 is a block diagram of the internal/external circulation switch according to the present invention;
FIG. 5 is a schematic diagram of the external circulation operation of the ceiling fresh air ventilator of the present invention;
FIG. 6 is a schematic diagram of the internal circulation operation of the ceiling fresh air ventilator of the present invention;
FIG. 7 is a block diagram of the intelligent control module of the present invention;
FIG. 8 is a schematic diagram of the intelligent control module of the present invention;
FIG. 9 is a main flow chart of the intelligent mode of the intelligent control module of the present invention;
FIG. 10 is a flowchart of the "Standby running" subroutine of the work flow diagram of FIG. 9;
FIG. 11 is a flow chart of the "inner loop run" subroutine of the work flow chart of FIG. 9;
FIG. 12 is a flow chart of the "outer loop run" subroutine of the work flow diagram of FIG. 9;
FIG. 13 is a flowchart of the "anti-freeze run A" sub-routine of the workflow diagram of FIG. 12;
FIG. 14 is a flowchart of the "anti-freeze run B" subroutine of the work flow diagram of FIG. 12;
FIG. 15 is a flowchart of the "anti-freeze run C" sub-routine of the workflow diagram of FIG. 12;
fig. 16 is a flowchart of the "freeze prevention operation D" subroutine in the work flowchart shown in fig. 12.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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.
Example 1
In cold winter in north, the outdoor temperature is usually about minus 20 degrees, the lowest temperature of regions such as Harbin is minus 20 degrees to minus 30 degrees, and under the severe weather, when the indoor PM is used2.5When the concentration, the carbon dioxide concentration and the volatile organic compound content are high, the ceiling fresh air ventilator starts to introduce outdoor fresh air for air purification. However, if outdoor fresh air is introduced for a long time due to low outdoor temperature, the heat exchanger is frosted, so that the heat exchanger cannot normally perform heat exchange, the indoor temperature is reduced, and the indoor comfort is greatly influenced.
At present, when most of traditional ceiling fresh air ventilators detect that the outdoor temperature is lower than zero, the whole machine can enter an anti-freezing mode, namely, the fresh air volume introduced from the outdoor is reduced or the introduction of fresh air is stopped, so that the replacement, purification and flow of indoor air cannot be realized, the quality of the indoor air is reduced, along with the reduction of the quality of the indoor air, dust, fine particle pollutants, bacteria, viruses and the like in the indoor air are increased day by day, and if the ventilator is used for a long time, the ventilator can cause great harm to the physical and mental health of people.
In order to solve the above problem, as shown in fig. 2, the present embodiment provides an anti-freezing control system for a ceiling fresh air ventilator, where the whole system is composed of a ventilation host 100, an internal and external circulation switcher 200, and an intelligent control module 300, and the ventilation host 100 in the present embodiment is the same as a ventilation host of a conventional ceiling fresh air ventilator.
As shown in fig. 3, the ventilation main unit 100 includes a fresh air motor 110, an exhaust air motor 120, a heat exchanger 130, a fresh air primary filter 140, a fresh air high efficiency filter 150, and an exhaust air primary filter 160, and the fresh air motor 110, the exhaust air motor 120, the heat exchanger 130, the fresh air primary filter 140, the fresh air high efficiency filter 150, and the exhaust air primary filter 160 are all located in the chassis of the ventilation main unit 100. Specifically, the fresh air motor 110 is used for introducing outdoor air into the room through an outdoor circulating air duct; the fresh air primary filter screen 140 is used for filtering large-particle dust in outdoor air; the fresh air high-efficiency filter screen 150 is used for filtering small-particle dust in outdoor air; the discharge motor 120 is used to discharge the indoor air to the outside through the indoor circulation duct; the primary air exhaust filter screen 160 is used for filtering large-particle dust in indoor air; the heat exchanger 130 serves to exchange heat between air introduced from the outside and air discharged from the inside.
As shown in fig. 4, the inside and outside circulation switch 200 includes a switching valve 210, a valve vane 220, and a PTC electric heater 230, and the switching valve 210, the valve vane 220, and the PTC electric heater 230 are all located in a switching box of the inside and outside circulation switch 200200. Specifically, the switching valve is used for switching from the outer circulation to the inner circulation or switching the inner circulation to the outer circulation, namely, the switching function of the outer circulation and the inner circulation is realized. The external circulation is the purification scheme of the traditional suspended ceiling fresh air ventilator, the principle is that indoor polluted air is discharged to the outside after being treated by an exhaust primary filter screen and a heat exchanger through an exhaust motor, then outdoor air is introduced through a fresh air motor, and the introduced outdoor air is sent into the room after being treated by the fresh air primary filter screen, the fresh air high-efficiency filter screen and the heat exchanger so as to be discharged, as shown in figure 5. The inner loop is one of this embodiment and traditional furred ceiling new trend ventilator's important difference, its principle is for cutting off between with indoor extrinsic cycle wind channel through inside and outside circulation switch, indoor contaminated air is expected to the indoor circulation wind channel, just imitate the filter screen through airing exhaust, the new trend is just imitated the filter screen, send into indoor again after high-efficient filter screen of new trend and heat exchanger handle, as shown in fig. 6, although the problem of indoor air pollution can be solved to the operation inner loop, but can't solve the high problem of indoor carbon dioxide and indoor Volatile Organic Compounds (VOC) concentration, only the outdoor new trend of operation extrinsic cycle introduction, can dilute indoor carbon dioxide and indoor Volatile Organic Compounds (VOC) concentration. In the embodiment, the PTC electric heater can utilize the positive temperature characteristic of the PTC material, that is, when a certain temperature value (curie point) is reached, the resistance value of the PTC electric heater increases suddenly, so that the current reduction power is reduced, and the purpose of automatic constant temperature is achieved. The PTC electric heater is not overheated, does not generate open fire, is less affected by voltage fluctuation, is safe to use, and saves energy, and is increasingly applied to heating equipment.
As shown in fig. 7 and 8, the intelligent control module 300 includes an air quality sensor module 310, an air temperature sensor module 320, a microprocessor 330, and a controller module 340. The air quality sensor module 310 includes indoor PM2.5Concentration sensor, indoor volatile organic compound concentration sensor 312, indoor carbon dioxide concentration sensor 313, indoor PM2.5The concentration sensor, the indoor volatile organic compound concentration sensor 312 and the indoor carbon dioxide concentration sensor 313 are all arranged in the liquid crystal display switch 350 to detect the indoor PM2.5Concentration, indoor volatile organic compound concentration and indoor carbon dioxide concentration, and detecting indoor PM2.5The concentration data, the indoor volatile organic concentration data, and the indoor carbon dioxide concentration data are uploaded to the microprocessor 330. The air temperature sensor module 320 includes an indoor air temperature sensor 321 and an outdoor air temperature sensor 322, the indoor air temperature sensor 321 is disposed in the liquid crystal display switch 350 to detect an indoor air temperature and upload detected indoor air temperature data to the microprocessor 330, and the outdoor air temperature sensor 322 is disposed in the outdoor circulation duct of the switching box to detect an outdoor air temperature and upload detected outdoor air temperature data to the microprocessor 330. The microprocessor 330 is configured to compare the detected indoor air quality data with an indoor air quality set value to obtain an indoor air quality comparison result, and upload the indoor air quality comparison result to the controller module 340, wherein the indoor air quality set value includes indoor PM2.5A concentration set value, an indoor volatile organic compound concentration set value and an indoor carbon dioxide concentration set value. In addition, the microprocessor 330 is further configured to compare the detected indoor air temperature data and the detected outdoor air temperature data with the indoor air temperature setting value and the outdoor air temperature setting value, respectively, to obtain an indoor air temperature comparison result and an outdoor air temperature comparison result, and upload the indoor air temperature comparison result and the outdoor air temperature comparison result to the controller module 340. Controller module340 comprises a fresh air motor controller 341, an exhaust motor controller 342, a switching valve controller 343 and a PTC electric heater controller 344, specifically, the fresh air motor controller 341 is configured to control the operation of the fresh air motor according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result; an air exhaust motor controller 342 for controlling the operation of the air exhaust motor according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result; the switching valve controller 343 is configured to control the operation of the switching valve according to the indoor air quality comparison result, the indoor air temperature comparison result, and the outdoor air temperature comparison result; the PTC electric heater controller 344 is configured to control the operation of the PTC electric heater according to the indoor air quality comparison result, the indoor air temperature comparison result, and the outdoor air temperature comparison result.
As shown in fig. 7, the intelligent control module 300 further includes a liquid crystal display switch 350, and the liquid crystal display switch 350 is disposed on the indoor wall and includes a liquid crystal display and a control switch. Specifically, the control switch is used for receiving the start-up, shut-down, running modes (intelligent mode and manual mode), fresh air motor/exhaust motor gears (high, medium and low), indoor air temperature set values, outdoor air temperature set values and indoor PM (particulate matter) input by a user through a key2.5The signals of the concentration set value, the indoor volatile organic compound concentration set value and the indoor carbon dioxide concentration set value are also used for receiving the indoor PM in real time2.5Concentration sensor, indoor volatile organic compound concentration sensor 312, and indoor PM detected by indoor carbon dioxide concentration sensor 3132.5Signals of concentration, indoor volatile organic compound concentration, and indoor carbon dioxide concentration, and signals of indoor air temperature and outdoor air temperature detected by the indoor air temperature sensor 321 and the outdoor air temperature sensor 322; the liquid crystal display screen is used for displaying the start-up, the shutdown, the running mode (intelligent mode and manual mode), the fresh air motor/exhaust motor gear (high, medium and low), the indoor air temperature set value, the outdoor air temperature set value and the indoor PM through key input by a user2.5Concentration set value, indoor volatile organic compound concentration set value and chamberThe set value of the concentration of the internal carbon dioxide is also used for displaying the indoor PM in real time2.5Concentration sensor, indoor volatile organic compound concentration sensor 312, and indoor PM detected by indoor carbon dioxide concentration sensor 3132.5Concentration, indoor volatile organic concentration, and indoor carbon dioxide concentration data, and indoor air temperature and outdoor air temperature data detected by the indoor air temperature sensor 321 and the outdoor air temperature sensor 322.
The anti-freezing control system of the ceiling fresh air ventilator provided by the embodiment is mainly realized through an intelligent mode of the intelligent control module 300. In the intelligent mode state, the air quality sensor module 310 and the air temperature module send the detected air quality data and the indoor and outdoor air temperature data to the microprocessor 330, and the microprocessor 330 compares the detected air quality data and the detected indoor and outdoor air temperature data with a preset air quality set value and a preset indoor and outdoor air temperature set value respectively to control the operation of the fresh air motor, the exhaust air motor, the switching valve and the PTC electric heater.
Example 2
The present embodiment provides a method for performing anti-freeze control by using the anti-freeze control system in embodiment 1, and the method is mainly implemented by using an intelligent mode of an intelligent control module. In an intelligent mode state, the air quality sensor module and the air temperature module send detected air quality data and indoor and outdoor air temperature data to the microprocessor, and the microprocessor compares the detected air quality data and the detected indoor and outdoor air temperature data with a preset air quality set value and a preset indoor and outdoor air temperature set value respectively to control the work of the fresh air motor, the exhaust motor, the switching valve and the PTC electric heater.
Specifically, the user sets an indoor air temperature set value, an outdoor air temperature set value, and an indoor PM by pressing keys2.5A concentration set value, an indoor volatile organic compound concentration set value and an indoor carbon dioxide concentration set value. Wherein the set value of the outdoor air temperature is Tm, preferably, the set value of the outdoor air temperature is Tm range of between 30 ℃ below zero and 0 ℃ below zero, and the indoor air temperatureThe set value of the temperature is Ts, preferably, the range of the set value of the indoor air temperature Ts is more than or equal to 6 ℃ and less than or equal to 12 ℃, and a user can also redefine the set value by pressing keys as required. In addition, the user can also select an operation mode, such as an intelligent mode or a manual mode, through a key.
The conventional control method in the smart mode is as follows:
when PM in room2.5Concentration PM2.5r exceeds PM in room2.5The concentration set value is that the indoor volatile organic compound concentration TVOCr does not exceed the indoor volatile organic compound concentration set value and the indoor carbon dioxide concentration CO2When r does not exceed the indoor carbon dioxide concentration set value, the switching valve is closed, namely the switching valve is switched to the internal circulation operation, the fresh air motor and the exhaust motor operate, indoor polluted air is pumped into the indoor circulation air duct and the outdoor circulation air duct and passes through the fresh air primary-effect filter screen, the fresh air high-efficiency filter screen and the exhaust primary-effect filter screen, and indoor air purification is realized;
when the indoor volatile organic compound concentration TVOCr exceeds the indoor volatile organic compound concentration set value or the indoor carbon dioxide concentration CO2When r exceeds the set value of indoor carbon dioxide concentration, the switching valve is opened, namely the switching operation is switched to the external circulation operation, the operation of the fresh air motor and the exhaust motor is switched, the outdoor introduced air and the indoor exhausted air are subjected to heat exchange in the heat exchanger through the indoor circulation air duct and the outdoor circulation air duct, so that the outdoor introduced air is sent into the room after the temperature of the outdoor introduced air is close to the temperature of the indoor air, and because the fresh air primary-effect filter screen, the fresh air high-efficiency filter screen and the exhaust primary-effect filter screen are arranged in the indoor circulation air duct and the outdoor circulation air duct2.5Concentration PM2.5r exceeds PM in room2.5When the concentration is set, the indoor air purification can be realized at the same time.
When PM in room2.5Concentration PM2.5r does not exceed indoor PM2.5The concentration set value, the indoor volatile organic compound concentration TVOCr do not exceed the indoor volatile organic compound concentration set value, and the indoor carbon dioxide concentration CO2When r does not exceed the set value of the indoor carbon dioxide concentration, the system is in standby operation, namely the PTC electric heater is closed, the fresh air motor is closed, the exhaust motor is closed, and the switching valve keeps the original stateStatus.
The PM described above2.5r concentration, TVOCr concentration, CO2The concentration r is divided into four grades, preferably lower than the limit value, and divided into three grades, namely good, light pollution and severe pollution, when the concentration r exceeds the limit value. When PM2.5r concentration, TVOCr concentration, CO2When the r concentration is in a good state, the fresh air motor and the exhaust motor stop running; when PM2.5r concentration, TVOCr concentration, CO2When the r concentrations are good, the fresh air motor and the exhaust motor run at low gear; when PM2.5r concentration, TVOCr concentration, CO2When the r concentration is in light pollution, the fresh air motor and the exhaust motor operate at a middle level; when PM2.5r concentration, TVOCr concentration, CO2When the r concentration is in severe pollution, the fresh air motor and the exhaust motor run in high grade; when PM2.5r concentration, TVOCr concentration, CO2When the r concentration appears in more than two levels, the level is high, such as when PM2.5Good gamma concentration, slight TVOCr concentration, and CO2When the r concentration is severe pollution, the fresh air motor and the exhaust motor operate at a severe pollution level, namely, operate at a high grade.
In the present embodiment, when the outdoor temperature sensor disposed on the inside/outside circulation switcher detects that the outdoor temperature Ta is lower than zero, the outdoor temperature sensor sends the detected outdoor temperature Ta to the microprocessor to perform the anti-freeze operation, which is described as a focus of the present embodiment.
When the outdoor temperature Ta is lower than zero but more than or equal to minus 10 ℃, entering an anti-freezing operation A program;
when the outdoor temperature Ta is lower than minus 10 ℃ but greater than or equal to minus 20 ℃, entering an anti-freezing operation B program;
when the outdoor temperature Ta is lower than minus 20 ℃ but greater than or equal to minus 30 ℃, entering an anti-freezing operation C program;
and when the outdoor temperature Ta is lower than minus 30 ℃, entering an anti-freezing operation D program.
Specifically, the control method for the anti-freezing operation A program comprises the following steps:
when the conventional operation under the intelligent mode is the inner loop, then continue according to the inner loop operation, under the inner loop operation, indoor outer air cycle passageway is cut off to inside and outside circulation switch, then outdoor low temperature can not influence furred ceiling fresh air ventilator.
When the normal operation under the intelligent mode is the extrinsic cycle, then open PTC electric heater on original normal operating's basis, preheat the air that will introduce the outdoor, prevent that heat exchanger frost from influencing indoor comfort level.
Specifically, the control method for the anti-freezing operation of the program B comprises the following steps:
when the conventional operation under the intelligent mode is the inner loop, then continue according to the inner loop operation, under the inner loop operation, indoor outer air cycle passageway is cut off to inside and outside circulation switch, then outdoor low temperature can not influence furred ceiling fresh air ventilator.
When the normal operation under the intelligent mode is the extrinsic cycle, then open PTC electric heater on the basis of original normal operation, preheat the air that will introduce outdoors, and new trend motor gear must not be greater than the low-grade, and the motor of airing exhaust is according to the normal control operation under the intelligent mode, prevents that heat exchanger frost from influencing indoor comfort level.
Specifically, the control method for the anti-freezing operation C program comprises the following steps:
when the conventional operation under the intelligent mode is the inner loop, then continue according to the inner loop operation, under the inner loop operation, indoor outer air cycle passageway is cut off to inside and outside circulation switch, then outdoor low temperature can not influence furred ceiling fresh air ventilator.
When the normal operation in the intelligent mode is the external circulation, the internal circulation and the external circulation are switched to alternately operate, namely, when the external circulation operates, the PTC electric heater is started to preheat the introduced outdoor air, the gear of the fresh air motor is not larger than the low gear, and the exhaust motor operates according to the normal control in the intelligent mode. When the running time is more than 10 minutes or the indoor temperature Tr is reduced by more than 5 degrees in the process of external circulation operation, the internal circulation operation is switched, the heat exchanger is probably frosted in the process of external circulation and continues external circulation again, so that the heat exchanger cannot exchange heat, the temperature of fresh air sent into the room is close to the outdoor temperature, the indoor temperature is reduced, and the indoor comfort level is influenced. When the internal circulation operation is carried out, because the indoor temperature Tr is much higher than the outdoor temperature Ta in the extremely cold winter environment, the indoor polluted air passes through the indoor circulation air duct and the outdoor circulation air duct, passes through the fresh air primary filter screen, the fresh air high-efficiency filter screen, the exhaust primary filter screen and the heat exchanger, and is sent into the room again after being filtered, so that the frost heat exchanger is unfrozen by the air with higher indoor temperature (relative to the outdoor air). When the indoor temperature Tr is more than or equal to 12 ℃, the PTC electric heater is closed, and the gears of the fresh air motor and the exhaust motor run for 1 minute at a low gear; when the indoor temperature Tr is more than 6 ℃ and less than 12 ℃, the PTC electric heater is started, and the gears of the fresh air motor and the exhaust motor run for 1 minute at a low gear; when the indoor temperature Tr is less than or equal to 6 ℃, the PTC electric heater is started, and the gears of the fresh air motor and the exhaust motor run for 3 minutes at a low gear; then, the operation is switched to the external cycle operation, and thus the alternating operation of the internal cycle and the external cycle is repeated.
Specifically, the control method for the anti-freezing operation D program comprises the following steps:
when entering the anti-freezing operation D, the outdoor temperature is too low and is lower than the lowest operation temperature of the system, and the external circulation operation is not allowed at the moment, and only the internal circulation operation is allowed, so that the system is prevented from being damaged.
Through adopting above-mentioned technical scheme, even in the extremely cold weather in winter, also can realize the replacement of indoor air, purify, flow under the condition that does not influence indoor comfort level.
In order to make the conventional control method in the smart mode in the present embodiment easy to understand, the following description is further provided with reference to the specific drawings.
As shown in fig. 9, the conventional control method in the smart mode in this embodiment includes:
initializing a microprocessor in the intelligent control module;
the TVOCr concentration or CO is judged by a microprocessor2Judging whether the r concentration exceeds the standard to start internal circulation operation or external circulation operation;
if yes, starting an outer loop operation subprogram;
if not, the PM is further judged through the microprocessor2.5Whether the r concentration exceeds the standard or not;
if yes, starting an internal circulation operation subprogram;
if not, starting a standby running sub-program.
Through selecting different running states, not only can realize the purification of indoor air quality, it is more energy-concerving and environment-protective moreover, this also is the important difference of this embodiment and traditional furred ceiling fresh air ventilator.
When the indoor air quality is excellent, the load such as the fresh air motor and the exhaust motor is not needed to be started, namely, the indoor air enters the standby state, and then the standby operation sub-program is started, as shown in fig. 10, the standby operation sub-program comprises:
initializing a microprocessor in the intelligent control module;
the switching valve keeps the original state, and the state of the switching valve does not influence the system at the moment, and the switching valve can be opened or closed, so the state is kept unchanged;
the PTC electric heater is closed, the fresh air motor is closed, and the exhaust motor is closed.
When TVOCr concentration and CO2The r concentration is not exceeded, but the PM is2.5When the r concentration exceeds the standard, then need not because of outdoor new trend, only need carry on indoor purification can, start "inner loop" operation subprogram promptly, as shown in FIG. 11, "inner loop" operation subprogram includes:
initializing a microprocessor in the intelligent control module;
closing the switching valve and entering internal circulation operation;
the PTC electric heater is closed, the fresh air motor is started, the exhaust motor is started, and the gears are controlled to operate conventionally.
As shown in fig. 12, when TVOCr concentration and CO were used2The r concentration exceeds the standard, the outdoor fresh air needs to be introduced for purification, then an 'external circulation' operation subprogram is started, and the 'external circulation' operation subprogram comprises:
initializing a microprocessor in the intelligent control module;
judging whether Tr is lower than zero degree through a microprocessor;
if not, the switching valve is opened, the external circulation operation is switched, the PTC electric heater is closed, the fresh air motor is opened, the exhaust motor is opened, and the gears are controlled to operate conventionally;
if yes, further judging whether Ta is more than or equal to minus 10 degrees and less than 0 degree through the microprocessor;
if yes, executing an anti-freezing operation A subprogram;
if not, further judging whether Ta is more than or equal to minus 20 degrees and less than minus 10 degrees through the microprocessor;
if yes, executing an anti-freezing operation B subprogram;
if not, further judging whether Ta is more than or equal to minus 30 degrees and less than minus 20 degrees through the microprocessor;
if yes, executing an anti-freezing operation C subprogram;
and if not, executing the anti-freezing operation D sub program.
When entering the anti-freezing operation a sub-program, which indicates that Ta is greater than or equal to minus 10 degrees and less than 0 degree, the outdoor temperature is not very bad relative to the anti-freezing operation B, the anti-freezing operation C, and the anti-freezing operation D, as shown in fig. 13, the anti-freezing operation a sub-program includes:
initializing a microprocessor in the intelligent control module;
opening a switching valve and entering external circulation operation;
and starting the PTC electric heater, the fresh air motor and the exhaust motor, wherein the gears are controlled to operate conventionally.
When entering the anti-freezing operation B subroutine, it indicates that Ta is greater than or equal to-20 degrees and less than 10 degrees, which is worse than the environment of the anti-freezing operation a, but the outdoor temperature is not too bad relative to the anti-freezing operation C and the anti-freezing operation D, as shown in fig. 14, the anti-freezing operation B subroutine includes:
initializing a microprocessor in the intelligent control module;
opening a switching valve and entering external circulation operation;
and starting the PTC electric heater and the fresh air motor, wherein the gear is not larger than the low gear, starting the air exhaust motor, and the gear is controlled to operate conventionally.
When entering the anti-freezing operation C subroutine, it indicates that Ta is greater than or equal to minus 30 degrees and less than 20 degrees, the outdoor temperature is already low, and only the mode of internal and external circulation alternating operation can be performed to realize the purification of the outdoor air, as shown in fig. 15, the anti-freezing operation C subroutine includes:
initializing a microprocessor in the intelligent control module;
the timer 1 is started to be reset, and the external cycle running time is timed;
opening a switching valve and entering external circulation operation;
starting the PTC electric heater and the fresh air motor, wherein the gear is not larger than the low gear, starting the air exhaust motor, and the gear is controlled to operate conventionally;
judging whether the timer 1 exceeds 10 minutes;
if yes, the switching valve is closed, the internal circulation operation is carried out, and the heat exchanger is unfrozen by air with relatively high indoor temperature;
if not, judging whether Tr is reduced by more than 5 degrees in the outer circulation process;
if yes, the heat exchanger in the system is frosted and heat exchange cannot be achieved, the switching valve is closed, internal circulation operation is carried out, and the heat exchanger is defrosted by air with relatively high indoor temperature;
judging whether Tr is greater than or equal to 12 degrees through a microprocessor;
if yes, the timer 2 is started to reset, the internal circulation operation time is timed, Tr is more than or equal to minus 12 degrees, and the indoor temperature is relatively high, the PTC electric heater is closed, the fresh air motor is operated at a low gear, and the exhaust air motor is operated at a low gear; judging whether the timer 2 exceeds 1 minute; if not, repeating the steps and continuing to operate in an internal circulation mode;
if not, judging whether Tr is larger than 6 degrees and smaller than equal 12 degrees;
if yes, the timer 2 is started to reset, the internal circulation operation time is timed, Tr is greater than 6 degrees and less than 12 degrees, and the indoor temperature is not very high, the PTC electric heater is started, the fresh air motor is operated at a low gear, and the exhaust motor is operated at a low gear; judging whether the timer 2 exceeds 1 minute; if not, repeating the steps and continuing to operate in an internal circulation mode;
if not, the timer 2 is started to reset, the internal circulation running time is timed, Tr is less than or equal to 6 degrees, the indoor temperature is low, the time required for unfreezing is long, the PTC electric heater is started, the fresh air motor is operated at a low gear, and the exhaust motor is operated at a low gear; judging whether the timer 2 exceeds 3 minutes; if not, repeating the steps and continuing to operate in an internal circulation mode.
When entering the anti-freezing operation D subroutine, which indicates that Ta is lower than-30 degrees and exceeds the temperature range of the system operation, if the system continues to operate in the external cycle, the system may be damaged irreversibly, and then only the internal cycle is performed, as shown in fig. 16, the anti-freezing operation D subroutine includes:
initializing a microprocessor in the intelligent control module;
closing the switching valve and entering internal circulation operation;
and (4) closing the PTC electric heater, starting the fresh air motor and the air exhaust motor, and operating the gears according to conventional control.
The anti-freezing control system and the anti-freezing control method thereof provided by the invention can realize indoor air replacement, purification and flow under the condition of extremely cold weather, and can input outdoor natural fresh air while removing indoor polluted air, and send the fresh air input into the room after being effectively filtered and preheated (when the outdoor air is cold), thereby improving the indoor air quality.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The method is applied to an anti-freezing control system of the ceiling fresh air ventilator, the anti-freezing control system of the ceiling fresh air ventilator comprises a ventilation host, an internal and external circulation switcher and an intelligent control module, the ventilation host comprises a fresh air motor and an exhaust air motor, the internal and external circulation switcher comprises a switching valve and an electric heater, and the intelligent control module comprises an air quality sensor module, an air temperature sensor module, a microprocessor and a controller module;
the method comprises the following steps:
detecting the indoor air quality through an air quality sensor module, and uploading detected indoor air quality data to a microprocessor;
the air temperature sensor module is used for detecting the indoor air temperature and the outdoor air temperature and uploading the detected data of the indoor air temperature and the outdoor air temperature to the microprocessor;
comparing the detected indoor air quality data with an indoor air quality set value through a microprocessor to obtain an indoor air quality comparison result, comparing the detected indoor air temperature data and the detected outdoor air temperature data with an indoor air temperature set value and an outdoor air temperature set value respectively to obtain an indoor air temperature comparison result and an outdoor air temperature comparison result, and uploading the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result to a controller module;
the controller module controls the work of the fresh air motor, the air exhaust motor, the switching valve and the electric heater according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result, and comprises the following steps:
if the outdoor temperature Ta is lower than minus 20 ℃ but greater than or equal to minus 30 ℃, entering an anti-freezing operation C program and executing the following steps:
initializing a microprocessor, starting a switching valve, entering external circulation operation, and timing the external circulation operation time;
starting an electric heater, starting a fresh air motor, starting an exhaust motor, and controlling the gears to operate according to the conventional control, wherein the gears are not larger than the low gear;
judging whether the external circulation running time exceeds a first preset time value or not;
if yes, closing the switching valve and entering internal circulation operation;
if not, judging whether the indoor temperature Tr is reduced by more than 5 degrees in the external circulation process;
if yes, closing the switching valve and entering internal circulation operation;
if the indoor temperature Tr is greater than or equal to 12 degrees, timing the internal circulation running time, and judging whether the internal circulation running time exceeds a second preset time value; if not, repeating the steps and continuing to operate in an internal circulation mode;
if the indoor temperature Tr is more than 6 degrees and less than 12 degrees, timing the internal circulation running time, and judging whether the internal circulation running time exceeds a third preset time value; if not, repeating the steps and continuing to operate in an internal circulation mode;
if the indoor temperature Tr is less than equal 6 degrees, timing the internal circulation running time, and judging whether the internal circulation running time exceeds a fourth preset time value; if not, repeating the steps and continuing to operate in an internal circulation mode.
2. The method of claim 1, wherein the detecting indoor air quality by an air quality sensor module and uploading detected indoor air quality data to a microprocessor comprises:
detecting the concentration of indoor PM2.5 through an indoor PM2.5 concentration sensor, and uploading the detected indoor PM2.5 concentration data to a microprocessor;
detecting the concentration of indoor volatile organic compounds through an indoor volatile organic compound concentration sensor, and uploading the detected concentration data of the indoor volatile organic compounds to a microprocessor;
the indoor carbon dioxide concentration is detected through the indoor carbon dioxide concentration sensor, and the detected indoor carbon dioxide concentration data are uploaded to the microprocessor.
3. The method of claim 1, wherein the detecting the indoor air temperature and the outdoor air temperature by the air temperature sensor module and uploading the detected indoor air temperature and outdoor air temperature data to the microprocessor comprises:
detecting the indoor air temperature through an indoor air temperature sensor, and uploading the detected indoor air temperature data to a microprocessor;
the outdoor air temperature is detected by the outdoor air temperature sensor, and the detected outdoor air temperature data is uploaded to the microprocessor.
4. The method of claim 1, wherein the microprocessor comparing the detected indoor air quality data to an indoor air quality setpoint comprises:
and comparing the detected indoor PM2.5 concentration data, indoor volatile organic compound concentration data and indoor carbon dioxide concentration data with an indoor PM2.5 concentration set value, an indoor volatile organic compound concentration set value and an indoor carbon dioxide concentration set value respectively through the microprocessor.
5. The method of claim 1, wherein the controller module controlling the operation of the fresh air motor, the exhaust air motor, the switching valve, and the electric heater according to the indoor air quality comparison result, the indoor air temperature comparison result, and the outdoor air temperature comparison result comprises:
the fresh air motor controller controls the fresh air motor to work according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result;
the air exhaust motor controller controls the work of the air exhaust motor according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result;
the switching valve controller controls the switching valve to work according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result;
the electric heater controller controls the electric heater to work according to the indoor air quality comparison result, the indoor air temperature comparison result and the outdoor air temperature comparison result.
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| CN110207340A (en) * | 2019-06-10 | 2019-09-06 | 广东美的暖通设备有限公司 | The new blower of Total heat exchange and its control method |
| CN110925953B (en) * | 2019-12-11 | 2021-02-19 | 南京晶华智能科技有限公司 | Exhaust heat recovery anti-freezing control method, device and system |
| CN111322680A (en) * | 2020-03-31 | 2020-06-23 | 重庆海润绿色科技集团有限公司 | Mobile emergency isolation shelter ventilation air-conditioning control system and control method for epidemic prevention dual-purpose |
| CN113819603A (en) * | 2021-09-06 | 2021-12-21 | 珠海格力电器股份有限公司 | Indoor ventilation method and device, ventilation equipment and storage medium |
| CN114251735A (en) * | 2021-12-08 | 2022-03-29 | 广东美的制冷设备有限公司 | Air conditioner, control method and device thereof and storage medium |
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| KR101230251B1 (en) * | 2010-11-29 | 2013-02-15 | 린나이코리아 주식회사 | Self-Preservation Driving Ventilator |
| CN105004021B (en) * | 2014-04-18 | 2017-12-12 | 上海兰舍空气技术有限公司 | A kind of Xingfeng capsule system |
| CN104633795B (en) * | 2015-03-03 | 2017-04-12 | 郝翠彩 | Energy-environment integrated machine for energy-efficient buildings |
| JP2016169913A (en) * | 2015-03-13 | 2016-09-23 | 三菱電機株式会社 | Heat exchange ventilator |
| CN106016562B (en) * | 2016-05-18 | 2019-04-30 | 青岛海信日立空调***有限公司 | A kind of control method, ventilation device and air-conditioning system |
| CN105953352B (en) * | 2016-05-18 | 2020-05-08 | 青岛海信日立空调***有限公司 | Total heat exchanger, control device, control method and air conditioning system |
| CN106765968A (en) * | 2016-12-30 | 2017-05-31 | 极客三个爸爸智能环境科技（北京）有限公司 | A kind of autocontrol method of intelligent fresh air cleaning equipment |
| CN107131613A (en) * | 2017-06-05 | 2017-09-05 | 爱国者电子科技有限公司 | Control method, control system and the VMC of VMC |
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Effective date of registration: 20221116 Address after: No. 77, Gaoxin 13th Road, Qiaonan Block, Hangzhou Economic and Technological Development Zone, Zhejiang 310000 Patentee after: Hangzhou Fu Zhao Lang Feng Technology Co.,Ltd. Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: Room 607, 6/F, College International Building, No. 1 Zhichun Road, Haidian District, Beijing 100191 Patentee before: Beijing Fuzhao LAVO Technology Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |