CN114234279A - Fresh air conditioner and control method thereof - Google Patents

Fresh air conditioner and control method thereof Download PDF

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Publication number
CN114234279A
CN114234279A CN202111470249.5A CN202111470249A CN114234279A CN 114234279 A CN114234279 A CN 114234279A CN 202111470249 A CN202111470249 A CN 202111470249A CN 114234279 A CN114234279 A CN 114234279A
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CN
China
Prior art keywords
fresh air
air
channel
exhaust
bypass
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111470249.5A
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Chinese (zh)
Inventor
何俊华
叶强蔚
刘星
颜杰
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202111470249.5A priority Critical patent/CN114234279A/en
Publication of CN114234279A publication Critical patent/CN114234279A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/003—Ventilation in combination with air cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • 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
    • 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
    • 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 a fresh air conditioner and a control method thereof, wherein the fresh air conditioner comprises: the fresh air inlet is used for sucking fresh air, the fresh air channel can enter the fresh air channel and exchange heat with the exhaust air entering through the exhaust air inlet at the heat exchange core, the fresh air sucked through the fresh air inlet can also enter the fresh air bypass channel, and airflow in the fresh air bypass channel directly enters the room through the fresh air outlet without passing through the heat exchange core for heat exchange. According to the invention, the fresh air bypass channel does not exchange heat with the heat exchange core, so that the fresh air does not need to flow through the heat exchange core for heat exchange under the condition that the temperature difference between outdoor fresh air and indoor exhaust air is small, the load when the fresh air heat exchange is not needed is effectively reduced, the wind resistance is reduced, and the service life of the system is prolonged.

Description

Fresh air conditioner and control method thereof
Technical Field
The invention relates to the technical field of compressors, in particular to a fresh air conditioner and a control method thereof.
Background
The existing indoor air processing equipment mainly comprises a fresh air haze removal machine, a fresh air ventilator, an air purifier and the like. Some of these devices are only used for exchanging and heat recovering indoor and outdoor air, some of the devices realize the air filtering function, and the air purifier mainly purifies the indoor air. The equipment has single function, can not simultaneously have the functions of refrigeration, heating, energy recovery or bypass, has insignificant energy-saving effect, or needs to be matched with the traditional air conditioner for use, is repeatedly installed and wastes manpower and material resources.
The invention provides a fresh air conditioner and a control method thereof, which are researched and designed because the fresh air conditioning system in the prior art has the technical problems of no energy conservation, influence on the service life of the system and the like due to higher load when fresh air heat exchange is not needed.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that the fresh air conditioning system in the prior art has high load when fresh air exchange is not needed, so that energy is not saved, and the service life of the system is influenced, thereby providing the fresh air conditioner and the control method thereof.
In order to solve the above problems, the present invention provides a fresh air conditioner, comprising:
the fresh air inlet is used for sucking fresh air, the fresh air channel can enter the fresh air channel and exchange heat with the exhaust air entering through the exhaust air inlet at the heat exchange core, the fresh air sucked through the fresh air inlet can also enter the fresh air bypass channel, and airflow in the fresh air bypass channel directly enters the room through the fresh air outlet without passing through the heat exchange core for heat exchange.
In some embodiments, the air exhaust chamber is communicated with the air exhaust inlet, the fresh air channel can be communicated with the fresh air inlet, and the heat exchange core is located between the fresh air channel and the air exhaust chamber, so that the fresh air in the fresh air channel and the exhaust air in the air exhaust chamber exchange heat at the heat exchange core;
and the fresh air bypass channel can also be communicated with the fresh air inlet, and the heat exchange core does not exchange heat with the fresh air bypass channel.
In some embodiments, the fresh air channel is disposed in the exhaust cavity, the fresh air bypass channel is also disposed in the exhaust cavity, the fresh air channel is connected with the fresh air bypass channel, and the heat exchange core is only in contact with the fresh air channel for heat exchange; the air exhaust outlet is communicated with the air exhaust cavity, and an air exhaust fan is further arranged in the air exhaust cavity.
In some embodiments, the fresh air device further comprises a fresh air chamber, wherein the fresh air chamber is communicated between the fresh air inlet and the fresh air channel or the fresh air bypass channel, one end of the fresh air chamber is communicated with the fresh air inlet, and the other end of the fresh air chamber is communicated with the fresh air channel or the fresh air bypass channel; and the inside of new trend cavity still is provided with fresh air filter with new trend preheating device, along the air current direction of flow, the new trend that gets into in the new trend import can flow through in proper order fresh air filter with new trend preheating device.
In some embodiments, a first filter is further disposed in the fresh air chamber, and the first filter is disposed between the fresh air filter and the fresh air inlet;
and the air exhaust inlet is also provided with a second filter for filtering indoor exhaust air sucked by the air exhaust inlet.
In some embodiments, the fresh air device further comprises a fresh air valve, wherein the fresh air valve can control the fresh air channel to be opened or closed, and the fresh air valve can also control the fresh air bypass channel to be opened or closed;
the fresh air valve further comprises a fresh air valve motor, a fresh air sweeping blade, a fresh air bypass valve motor and a fresh air bypass sweeping blade, the fresh air sweeping blade is located in the fresh air duct, the fresh air bypass sweeping blade is located in the fresh air bypass duct, the fresh air valve motor can control the fresh air sweeping blade to move so as to open or close the fresh air channel, and the fresh air bypass valve motor can control the fresh air bypass sweeping blade to move so as to open or close the fresh air bypass channel.
In some embodiments, the fresh air ventilation device further comprises an inner circulation chamber, an inner circulation air inlet and an inner circulation air valve, wherein the inner circulation air inlet is communicated with the inner circulation chamber, one end of the inner circulation chamber is further communicated with the fresh air channel and the fresh air bypass channel respectively, the other end of the inner circulation chamber is further communicated with the fresh air outlet, and the inner circulation air valve can control the opening or closing of the inner circulation air inlet.
In some embodiments, the airflow of the internal circulation air inlet is provided with a third filter at the downstream end,
a fresh air fan and a heat exchanger are arranged in the internal circulation chamber, and a fresh air outlet leads to the interior of the chamber;
a fresh air temperature and humidity sensor and a carbon dioxide sensor are also arranged in the internal circulation chamber; the fresh air conditioner also comprises an electric controller.
In some embodiments, the fresh air blower includes a fresh air motor, a first fresh air volute, and a second fresh air volute, the fresh air motor being connectable to both the first fresh air volute and the second fresh air volute.
The present invention also provides a control method of the fresh air conditioner as described in any one of the above, comprising:
a detection step of detecting the concentration C of indoor carbon dioxide and the indoor ambient temperature TInner partAnd outdoor ambient temperature TOuter cover；
A judging step of judging the relationship between the carbon dioxide concentration C and the set concentration A and judging the indoor environment temperature TInner partAnd indoor set temperature TIs provided withThe relationship between them, and the judgment of the outdoor ambient temperature TOuter coverTemperature T of indoor environmentInner partThe relationship between;
a control step of controlling the indoor ambient temperature T based on the relationship between the carbon dioxide concentration C and the set concentration AInner partAnd indoor set temperature TIs provided withThe relationship between, and the outdoor ambient temperature TOuter coverTemperature T of indoor environmentInner partThe fresh air conditioner is controlled to execute one of a fresh air mode, a mixed air mode, an internal circulation mode and a fresh air bypass mode.
In some embodiments, when including exhaust fan, new trend air valve motor, new trend bypass air valve motor and inner loop blast gate simultaneously:
in the judging step, the judgment condition 1 is that C is more than or equal to A, and the judgment condition 2 is that-T1 is more than or equal to TInner part-TIs provided withT is not more than T1, and the judgment condition 3 is that-T2 is not more than TOuter cover-TInner part≤T2；
In the control step, if the judgment condition 1 is not met, the exhaust fan and the fresh air valve motor are controlled to be closed, the fresh air bypass air valve motor is closed, the internal circulation air valve is opened, and the internal circulation mode is operated;
when judging that the determination condition 1 is satisfied; when the judgment condition 2 is not met, controlling to open a fresh air valve motor, close a fresh air bypass air valve motor, open the internal circulation air valve, open the exhaust fan and operate the air mixing mode;
when the judgment condition 1, the judgment condition 2 and the judgment condition 3 are simultaneously met, controlling to close an internal circulation air valve, close a fresh air valve motor, open a fresh air bypass air valve motor, open the exhaust fan and operate a fresh air bypass mode;
when the judgment condition 1 is met, the judgment condition 2 is met, and the judgment condition 3 is not met, controlling to close an internal circulation air valve, open a fresh air valve motor, close a fresh air bypass air valve motor, open the exhaust fan, and operating a fresh air mode;
wherein A is a set carbon dioxide concentration value, T1 is a first set temperature value, and T2 is a second set temperature value.
In some embodiments, A is 900-1100PPM, T1 is 1-3 deg.C, and T2 is 2-5 deg.C.
In some embodiments, when a fresh air preheating device is further included:
the determining step may further determine whether or not a determination condition 4 is satisfied: t isRing (C)＜T3；
And in the control step, if the judgment condition 4 is met, the fresh air preheating device is turned on, and if the judgment condition 4 is not met, the fresh air preheating device 4 is turned off, wherein TRing (C)The outdoor ambient temperature is T3 is the third set temperature.
The fresh air conditioner and the control method thereof provided by the invention have the following beneficial effects:
1. the fresh air conditioner has the advantages that fresh air can be introduced from the outside to the inside through the fresh air inlet and the fresh air outlet which are formed in the fresh air conditioner, gas can be introduced from the inside to the outside through the air exhaust inlet and the air exhaust outlet, and the gas is exhausted from the inside to the outside, so that the exchange of fresh air flow and dirty air flow inside and outside the room is effectively finished, in addition, the heat exchange core body, the fresh air channel and the fresh air bypass channel are arranged, so that the heat exchange can be carried out between outdoor fresh air and indoor exhaust air through the heat exchange core body when the outdoor fresh air enters the fresh air channel, certain heat or cold can be transferred to outdoor fresh air through the indoor exhaust air when the temperature difference between the outdoor fresh air and the indoor fresh air is large, the energy of the indoor exhaust air is effectively recovered (mainly heat recovery), the energy recovery function is realized, and the good energy saving effect is realized while the indoor air quality is effectively improved; the fresh air bypass channel can also pass through the fresh air bypass channel, and the fresh air bypass channel does not exchange heat with the heat exchange core, so that the fresh air does not need to flow through the heat exchange core for heat exchange under the condition that the temperature difference between outdoor fresh air and indoor exhaust air is small, the load when the fresh air heat exchange is not needed is effectively reduced, the wind resistance is reduced, and the service life of the system is prolonged;
2. the fresh air environment-friendly all-in-one machine provided by the invention can realize a fresh air mode, a mixed air mode, an internal circulation mode, a fresh air bypass mode and the like, has the functions of heating, refrigerating, air purifying, fresh air ventilating, bypassing and the like, can adjust different functions according to environmental requirements, has an energy recovery function, achieves a good energy-saving effect while effectively improving the indoor air quality, has a remarkable energy-saving effect, and can monitor indoor temperature and humidity, CO2 concentration and PM2.5 parameter states in real time and effectively adjust the indoor temperature and humidity.
Drawings
FIG. 1 is a schematic view of the overall internal structure of a fresh air conditioner according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a gas flow diagram of the fresh air conditioner of the present invention in a fresh air mode;
FIG. 5 is a gas flow diagram of the fresh air conditioner of the present invention in the air mixing mode;
FIG. 6 is a gas flow diagram of the fresh air conditioner of the present invention in the inner circulation mode;
FIG. 7 is a gas flow diagram of the fresh air conditioner of the present invention in a fresh air bypass mode;
FIG. 8 is a flow chart of a control method of the fresh air conditioner according to the present invention;
FIG. 9 is a schematic view of the overall internal structure of the fresh air conditioner according to the present invention (alternative embodiment one);
FIG. 10 is a cross-sectional view A-A of FIG. 9 of the present invention (alternate embodiment one);
FIG. 11 is a sectional view of an alternative embodiment A-A of the present invention;
FIG. 12 is a B-B screenshot of an alternative second embodiment of the present invention;
FIG. 13 is a screenshot A-A of an alternate embodiment of the present invention;
FIG. 14 is a B-B screenshot of an alternate embodiment of the present invention.
The reference numerals are represented as:
1. a fresh air inlet; 2. a first filter; 3. a fresh air filter; 4. a fresh air preheating device; 5. an exhaust inlet; 6. a second filter; 7. an internal circulation air inlet; 8. an internal circulation air valve; 9. a third filter; 10. a fresh air temperature and humidity sensor; 11. an exhaust outlet; 12. an exhaust fan; 13. an electric controller; 14. a heat exchange core; 15. a fresh air valve; 16. a carbon dioxide sensor; 17. a fresh air fan; 18. a heat exchanger; 19. a fresh air outlet; 151. a fresh air valve motor; 152. the fresh air bypasses the air valve motor; 171. a first fresh air volute; 172. a fresh air motor; 173. a second fresh air volute; 100. a fresh air channel; 200. a fresh air bypass channel; 300. an exhaust chamber; 400. a fresh air chamber; 500. an internal circulation chamber.
Detailed Description
As shown in fig. 1 to 14, the present invention provides a fresh air conditioner, comprising:
fresh air sucked through the fresh air inlet 1 can enter the fresh air channel 100 and exchange heat with the exhaust air entering through the exhaust air inlet 5 at the heat exchange core 14, the fresh air sucked through the fresh air inlet 1 can also enter the fresh air bypass channel 200, and the airflow in the fresh air bypass channel 200 directly enters the room through the fresh air outlet 19 without passing through the heat exchange core 14 for heat exchange.
The fresh air conditioner has the advantages that fresh air can be introduced from the outside to the inside through the fresh air inlet and the fresh air outlet which are formed in the fresh air conditioner, gas can be introduced from the inside to the outside through the air exhaust inlet and the air exhaust outlet, and the gas is exhausted from the inside to the outside, so that the exchange of fresh air flow and dirty air flow inside and outside the room is effectively finished, in addition, the heat exchange core body, the fresh air channel and the fresh air bypass channel are arranged, so that the heat exchange can be carried out between outdoor fresh air and indoor exhaust air through the heat exchange core body when the outdoor fresh air enters the fresh air channel, certain heat or cold can be transferred to outdoor fresh air through the indoor exhaust air when the temperature difference between the outdoor fresh air and the indoor fresh air is large, the energy of the indoor exhaust air is effectively recovered (mainly heat recovery), the energy recovery function is realized, and the good energy saving effect is realized while the indoor air quality is effectively improved; the fresh air bypass channel can be used for exchanging heat with the heat exchange core body, so that the fresh air does not need to flow through the heat exchange core body for exchanging heat under the condition that the temperature difference between outdoor fresh air and indoor exhaust air is small, the load when the fresh air is not required for exchanging heat is effectively reduced, the wind resistance is reduced, and the service life of the system is prolonged.
The fresh air environment-friendly all-in-one machine provided by the invention can realize a fresh air mode, a mixed air mode, an internal circulation mode, a fresh air bypass mode and the like, has the functions of heating, refrigerating, air purifying, fresh air ventilating, bypassing and the like, can adjust different functions according to environmental requirements, has an energy recovery function, achieves a good energy-saving effect while effectively improving the indoor air quality, has a remarkable energy-saving effect, and can monitor indoor temperature and humidity, CO2 concentration and PM2.5 parameter states in real time and effectively adjust the indoor temperature and humidity.
In some embodiments, the air exhaust chamber 300 is further included, the air exhaust chamber 300 is communicated with the air exhaust inlet 5, the fresh air channel 100 can be communicated with the fresh air inlet 1, and the heat exchange core 14 is located between the fresh air channel 100 and the air exhaust chamber 300, so that the fresh air in the fresh air channel 100 and the exhaust air in the air exhaust chamber 300 exchange heat at the heat exchange core 14;
and the fresh air bypass channel 200 can also be communicated with the fresh air inlet 1, and the heat exchange core body 14 does not exchange heat for the fresh air bypass channel 200.
The indoor air can be introduced from the air exhaust inlet by arranging the air exhaust cavity, the fresh air channel is communicated with the fresh air inlet to suck outdoor fresh air, the heat exchange core body can perform heat exchange between the fresh air channel and the air exhaust cavity, the fresh air bypass channel is communicated with the fresh air inlet to suck fresh air, but the fresh air bypass channel cannot enable air flow to pass through the heat exchange core body to exchange heat, so that the wind resistance can be effectively reduced, and the energy efficiency is improved.
In some embodiments, the fresh air channel 100 is disposed in the exhaust chamber 300, the fresh air bypass channel 200 is also disposed in the exhaust chamber 300, the fresh air channel 100 is connected to the fresh air bypass channel 200, and the heat exchange core 14 only contacts with the fresh air channel 100 for heat exchange; the exhaust outlet 11 is communicated with the exhaust chamber 300, and an exhaust fan 12 is further arranged in the exhaust chamber 300. The invention is a further preferred structural form, namely the fresh air channel is positioned in the exhaust cavity, the fresh air bypass channel is also positioned in the exhaust cavity, and the heat exchange core body is only contacted with the fresh air channel for heat exchange so as to utilize indoor exhaust air to exchange heat with outdoor fresh air when the temperature difference between the indoor and the outdoor is large, thereby recovering energy; the heat exchange core body is not communicated with the fresh air bypass channel so as to close the fresh air channel when the indoor and outdoor temperature difference is small, and only the fresh air bypass channel is used for ventilation, so that the wind resistance is effectively reduced; the air exhaust chamber is communicated with the air exhaust outlet so as to effectively exhaust the indoor air to the outside, and the air exhaust channel can be opened or closed by the arrangement of the air exhaust fan, so that the air exhaust chamber is communicated with the air exhaust inlet or not.
In some embodiments, the fresh air device further comprises a fresh air chamber 400, the fresh air chamber 400 is arranged between the fresh air inlet 1 and the fresh air channel 100 or the fresh air bypass channel 200 in a communicating manner, one end of the fresh air chamber 400 is communicated with the fresh air inlet 1, and the other end of the fresh air chamber 400 is communicated with the fresh air channel 100 or the fresh air bypass channel 200; and the inside of new trend cavity 400 still is provided with new trend filter 3 with new trend preheating device 4, along the air current direction of flow, the new trend that gets into in the new trend import 1 can flow through in proper order new trend filter 3 with new trend preheating device 4. The fresh air cavity is arranged, so that the fresh air cavity can be effectively communicated with the fresh air inlet, fresh air is conveyed into the fresh air channel or the fresh air bypass channel, the fresh air filter and the fresh air preheating device in the fresh air cavity can effectively filter and preheat fresh air, and discomfort of a human body caused by the fresh air blown into the cavity is prevented.
In some embodiments, a first filter 2 is further disposed in the fresh air chamber 400, and the first filter 2 is disposed between the fresh air filter 3 and the fresh air inlet 1;
and a second filter 6 is further arranged at the exhaust air inlet 5 to filter indoor exhaust air sucked by the exhaust air inlet 5.
The first filter and the second filter arranged at the exhaust air inlet can perform rough filtration on the fresh air inlet to block large particles and other impurities existing in fresh air entering indoors outdoors, and the second filter can perform filtration on indoor exhaust air entering the exhaust air chamber to prevent impurities and the like from entering the exhaust air chamber, so that the indoor exhaust air purity is improved.
In some embodiments, the fresh air device further comprises a fresh air damper 15, wherein the fresh air damper 15 can control the fresh air channel 100 to be opened or closed, and the fresh air damper 15 can also control the fresh air bypass channel 200 to be opened or closed;
fresh air damper 15 includes fresh air damper motor 151, fresh air sweeping blade, fresh air bypass damper motor 152 and fresh air bypass sweeping blade, fresh air sweeping blade is located in fresh air duct 100, fresh air bypass sweeping blade is located in fresh air bypass duct 200, fresh air damper motor 151 can control fresh air sweeping blade motion is in order to open or close fresh air passageway 100, fresh air bypass damper motor 152 can control fresh air bypass sweeping blade motion is in order to open or close fresh air bypass passageway 200.
The fresh air channel and the fresh air bypass channel can be controlled to be opened or closed through the arrangement of the fresh air valve, preferably, the fresh air valve motor can open or close the fresh air channel, and the fresh air bypass valve motor can open or close the fresh air bypass channel.
In some embodiments, the fresh air ventilation system further comprises an internal circulation chamber 500, an internal circulation air inlet 7 and an internal circulation air valve 8, the internal circulation air inlet 7 is communicated with the internal circulation chamber 500, one end of the internal circulation chamber 500 is further communicated with the fresh air channel 100 and the fresh air bypass channel 200 respectively, the other end of the internal circulation chamber 500 is further communicated with the fresh air outlet 19, and the internal circulation air valve 8 can control the opening or closing of the internal circulation air inlet 7. The invention also can introduce indoor air flow into the internal circulation chamber through the internal circulation air inlet through the arrangement of the internal circulation chamber, and control the opening and closing of the channel through the internal circulation air valve, one end of the internal circulation chamber is communicated with the fresh air channel or the fresh air bypass channel, outdoor fresh air can be sucked from the fresh air channel or the fresh air bypass channel, and the outdoor fresh air and/or indoor internal circulation air can be discharged into the room through the fresh air outlet, thereby effectively completing the functions of introducing the fresh air into the room and continuously returning the internal circulation air into the room.
In some embodiments, a third filter 9 is further arranged at the downstream end of the air flow direction of the internal circulation air inlet 7,
a fresh air fan 17 and a heat exchanger 18 are arranged in the internal circulation chamber 500, and a fresh air outlet 19 leads to the interior of the chamber;
a fresh air temperature and humidity sensor 10 and a carbon dioxide sensor 16 are also arranged in the internal circulation chamber 500; the fresh air conditioner also comprises an electric controller 13.
The air in the internal circulation inlet can be filtered and purified through the third filter arranged at the internal circulation inlet, the air flow in the internal circulation chamber can be driven through the fresh air fan to enter the room through the fresh air outlet, and the internal circulation air flow and/or outdoor fresh air can be subjected to effective heat exchange through the heat exchanger and then enter the room; the temperature and humidity of indoor wind can be effectively monitored through the fresh air temperature and humidity sensor and the carbon dioxide sensor, the concentration of carbon dioxide in indoor airflow is monitored, and therefore whether various modes such as fresh air, internal circulation wind, mixed wind, fresh air bypass or fresh air mode are opened or not is controlled according to the temperature and humidity and the carbon dioxide concentration of the indoor airflow, and the indoor temperature and humidity and the carbon dioxide concentration meet the requirement of the comfort level of a human body.
In some embodiments, the fresh air blower 17 includes a fresh air motor 172, a first fresh air volute 171 and a second fresh air volute 173, and the fresh air motor 172 can be connected to both the first fresh air volute 171 and the second fresh air volute 173. The invention also connects with two volutes through the new wind motor, can form the driving structure of single motor and double fan blades, improve the driving effect, the structure is compact and simple.
The present invention also provides a control method of the fresh air conditioner as described in any one of the above, comprising:
a detection step of detecting the concentration C of indoor carbon dioxide and the indoor ambient temperature TInner partAnd outdoor ambient temperature TOuter cover；
A judging step of judging the relationship between the carbon dioxide concentration C and the set concentration A and judging the indoor environment temperature TInner partAnd indoor set temperature TIs provided withThe relationship between them, and the judgment of the outdoor ambient temperature TOuter coverTemperature T of indoor environmentInner partThe relationship between;
a control step of controlling the indoor ambient temperature T based on the relationship between the carbon dioxide concentration C and the set concentration AInner partAnd indoor set temperature TIs provided withThe relationship between, and the outdoor ambient temperature TOuter coverTemperature T of indoor environmentInner partThe fresh air conditioner is controlled to execute one of a fresh air mode, a mixed air mode, an internal circulation mode and a fresh air bypass mode.
The control method of the fresh air conditioner can control the fresh air conditioner to execute a specific mode according to the carbon dioxide concentration, the indoor environment temperature and the outdoor environment temperature, so that any one of a fresh air mode, a mixed air mode, an internal circulation mode and a fresh air bypass mode can be operated according to the requirement, and the fresh air heat exchange can recover energy, thereby effectively improving the indoor air quality and achieving a good energy-saving effect; and the fresh air bypass function can reduce airflow windage resistance, improve energy, improve the operation energy efficiency of the fresh air conditioner and improve efficiency without passing through a heat exchange core when the indoor and outdoor temperature difference is small.
In some embodiments, when including the exhaust fan 12, the fresh air damper motor 151, the fresh air bypass damper motor 152, and the internal circulation damper 8 at the same time:
in the judging step, the judgment condition 1 is that C is more than or equal to A, and the judgment condition 2 is that-T1 is more than or equal to TInner part-TIs provided withT is not more than T1, and the judgment condition 3 is that-T2 is not more than TOuter cover-TInner part≤T2；
In the control step, if the judgment condition 1 is not met, the exhaust fan 12 and the fresh air valve motor 151 are controlled to be closed, the fresh air bypass air valve motor 152 is closed, the internal circulation air valve 8 is opened, and the internal circulation mode is operated;
when judging that the determination condition 1 is satisfied; when the judgment condition 2 is not met, controlling to open a fresh air valve motor 151, close a fresh air bypass air valve motor 152, open the internal circulation air valve 8, open the exhaust fan 12 and operate the air mixing mode;
when the determination condition 1, the determination condition 2 and the determination condition 3 are simultaneously met, controlling to close the internal circulation air valve 8, close the fresh air valve motor 151, open the fresh air bypass air valve motor 152, open the exhaust fan 12 and run a fresh air bypass mode;
when the determination condition 1 is met, the determination condition 2 is met, and the determination condition 3 is not met, controlling to close the internal circulation air valve 8, open the fresh air valve motor 151, close the fresh air bypass air valve motor 152, open the exhaust fan 12, and operating a fresh air mode;
wherein A is a set carbon dioxide concentration value, T1 is a first set temperature value, and T2 is a second set temperature value.
The fresh air environment-control all-in-one machine has a fresh air mode, an air mixing mode, an internal circulation mode and a fresh air bypass mode.
A fresh air mode: as shown in fig. 4, in this mode, the fresh air damper motor 151 controls the damper to open, the fresh air bypass damper motor 152 controls the damper to close, and the internal circulation damper 8 closes. Outdoor fresh air is introduced through the fresh air inlet 1, purified through the first filter 2 and the fresh air filter 3, enters the heat exchange core 14 of the fresh air channel after passing through the fresh air preheating device 4 (the outdoor fresh air is started when the temperature is too low, the fresh air is preheated, and the heat exchange core 14 is prevented from being frozen), is introduced into the heat exchanger 18 through the fresh air fan 17 to complete refrigeration or heating, and finally enters the room through the fresh air outlet 19. Meanwhile, the indoor air is introduced from the exhaust inlet 5, filtered by the second filter 6 and then enters the heat exchange core 14, and finally the indoor air is extracted to the outdoor through the exhaust outlet 11 by the exhaust fan 12. When the air passes through the heat exchange core body 14, the outdoor fresh air and the indoor air complete the heat and humidity exchange, and the energy-saving effect is realized.
A wind mixing mode: as shown in fig. 5, in this mode, the fresh air damper motor 151 controls the air damper to open, the fresh air bypass damper motor 152 controls the air damper to close, and the internal circulation air damper 8 opens. Outdoor fresh air is introduced through a fresh air inlet 1, purification is completed through a first filter 2 and a fresh air filter 3, then the outdoor fresh air enters a heat exchange core 14 of a fresh air channel after passing through a fresh air preheating device 4 (the outdoor fresh air is opened when the temperature is too low, the fresh air is preheated, and the heat exchange core 14 is prevented from freezing), meanwhile, indoor air enters through an internal circulation air inlet 7, is filtered by a third filter 9, then passes through an internal circulation air valve 8 and is mixed with clean fresh air entering the fresh air channel, then the fresh air is introduced into a heat exchanger 18 through a fresh air fan 17 to complete refrigeration or heating, and finally enters the room through a fresh air outlet 19. Meanwhile, the indoor air is introduced from the air exhaust inlet 5, filtered by the second filter 6 and then enters the heat exchange core 14, finally the indoor air is exhausted to the outside from the air exhaust outlet 11 through the air exhaust fan 12, and when the indoor air passes through the heat exchange core 14, the outdoor fresh air and the indoor air complete the heat and humidity exchange, so that the energy-saving effect is realized.
An internal circulation mode: as shown in fig. 6, in this mode, the fresh air damper motor 151 controls the damper to close, the fresh air bypass damper motor 152 controls the damper to close, and the internal circulation damper 8 opens. At the moment, the exhaust fan is closed, indoor air enters through the internal circulation air inlet 7, is filtered by the third filter 9 and then passes through the internal circulation air valve 8, fresh air is introduced into the heat exchanger 18 by the fresh air fan 17 to complete refrigeration or heating, and finally enters the room through the fresh air outlet 19 to complete the internal circulation of the indoor air.
Fresh air bypass mode: as shown in fig. 7, in this mode, the fresh air damper motor 151 controls the damper to be closed, the fresh air bypass damper motor 152 controls the damper to be closed and opened, and the internal circulation damper 8 is closed. The mode is different from the fresh air mode in that fresh air does not pass through the heat exchange core 14 when entering, but passes through a fresh air bypass hollow structure controlled by the fresh air bypass air valve motor 152. Fresh air windage reduces under this mode, and fresh air fan 17 load diminishes, and is more energy-conserving, and the new trend does not pass through heat exchange core 14 simultaneously, can prolong heat exchange core 14 life.
The control logic for each operating mode is as follows:
after starting up, opening the internal circulation air valve 8, starting the exhaust fan 12, starting the fresh air fan 17, detecting the indoor carbon dioxide concentration through the carbon dioxide sensor 16, if the judgment condition 1 is not met, closing the exhaust fan 12, and operating the internal circulation mode; if the judgment condition 1 is met and the judgment condition 2 is not met, opening the fresh air valve motor 151 and operating the air mixing mode; if the judgment condition 1, the judgment condition 2 and the judgment condition 3 are met simultaneously, closing the internal circulation air valve 8 and operating a fresh air bypass mode; if the judgment condition 1 and the judgment condition 2 are met and the judgment condition 3 is not met simultaneously, the internal circulation air valve 8 is closed, the fresh air valve motor 151 is closed, the fresh air bypass air valve motor 152 is opened, and a fresh air bypass fresh air mode is operated. If the determination condition 4 is satisfied, the fresh air preheating device 4 is opened, and if the determination condition 4 is not satisfied, the fresh air preheating device 4 is closed.
Determination condition 1: the concentration of carbon dioxide is more than or equal to A
Determination condition 2: -T1 ≦ indoor ambient temperature-indoor set temperature ≦ T1
Determination condition 3: -outdoor ambient temperature of-T2 ≦ indoor ambient temperature ≦ T2
Determination condition 4: ambient temperature < T
If carbon dioxide concentration is too high, then judge that there is the new trend demand, there is the cooling demand that the ambient temperature is great with the settlement temperature difference, so satisfy simultaneously and open the mixed wind, can effectively cool down and introduce the new trend.
If the determination condition 1 is satisfied and the determination condition 2 is not satisfied, the following description is given: if the carbon dioxide concentration is high and heat exchange is needed indoors, the air mixing mode is operated;
when determination condition 1, determination condition 2, and determination condition 3 are satisfied at the same time, the following description has been given: indoor heat exchange is not needed, the temperature difference between the indoor and the outdoor is small, a fresh air bypass mode is operated (when the difference between the ambient temperature and the set temperature is small, no cooling requirement exists, only fresh air is needed, indoor circulation is not needed, at the moment, the difference between the indoor environment temperature and the outdoor environment temperature is large, fresh air in a fresh air mode passes through the core body, heat exchange with discharged indoor air is realized, and energy conservation is realized.)
When the determination condition 1, the determination condition 2, and the determination condition 3 are satisfied at the same time, the following description is given: indoor heat exchange is not needed, the condition 3 is not met, the fact that the temperature difference between the outdoor and indoor is large is indicated, fresh air heat exchange is needed (when the difference between the ambient temperature and the set temperature is small, no cooling requirement exists, only fresh air is needed, indoor circulation is not needed, at the moment, the difference between the indoor ambient temperature and the outdoor ambient temperature is small, the heat exchange significance is not large, and a fresh air bypass mode needs to be started.)
Wherein: a is a set carbon dioxide concentration value, and the value is 900-
T1 is a set temperature value with the value of 1-3 DEG C
T2 is a set temperature value of 2-5 DEG C
T is a set temperature value of-30-0 DEG C
In some embodiments, A is 900-1100PPM, T1 is 1-3 deg.C, and T2 is 2-5 deg.C.
In some embodiments, when a fresh air preheating device 4 is also included:
the determining step may further determine whether or not a determination condition 4 is satisfied: t isRing (C)＜T3；
In the control step, if the determination condition 4 is met, the fresh air preheating device 4 is turned on, and if the determination condition 4 is not met, the fresh air preheating device 4 is turned off, wherein a T ring is the ambient temperature, and T3 is a third set temperature. When outdoor new trend temperature is too low, can lead to the core to freeze, harm the core, so need new trend preheating device to preheat.
Alternative embodiment one, as shown in figures 9-10,
the hexagonal heat exchange core 14 may be replaced by a square or a diamond.
As shown in fig. 9, the lower end of the partial sectional view a-a is a heat exchange core 14, which belongs to a fresh air channel; the upper end is a hollow structure, which belongs to a fresh air bypass channel. In the partial sectional view of B-B, the fresh air bypass air valve motor controls the air outlet of the fresh air bypass channel, and the fresh air valve motor controls the air outlet of the fresh air channel.
Alternative embodiment two, as shown in figures 11-14,
the fresh air bypass channel and the fresh air channel can also be arranged left and right, and the heat exchange core body is a fresh air channel; a fresh air bypass channel is additionally arranged.
As shown in fig. 11, the right end of the partial sectional view a-a is a heat exchange core 14, which belongs to a fresh air channel; the left end is a hollow structure and belongs to a fresh air bypass channel. Correspondingly, the corresponding air valve is arranged at the port of the channel, a fresh air valve motor 151 controls the air outlet of the fresh air channel in a partial sectional view B-B, and a fresh air bypass air valve motor 152 controls the air outlet of the fresh air bypass channel.
As shown in fig. 13, the left end of the partial sectional view a-a is provided with a heat exchange core 14 and a fresh air bypass channel; the right end is a hollow structure and belongs to a fresh air channel. Correspondingly, the corresponding air valve is arranged at the port of the channel, as shown in fig. 14, in a partial cross-sectional view B-B, the fresh air valve motor 151 controls the air outlet of the fresh air channel, and the fresh air bypass valve motor 152 controls the air outlet of the fresh air bypass channel.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (13)

1. A fresh air conditioner is characterized in that: the method comprises the following steps:
fresh air inlet (1), air exhaust inlet (5), air exhaust outlet (11), fresh air outlet (19), heat exchange core (14), fresh air channel (100) and fresh air bypass channel (200), fresh air sucked through fresh air inlet (1) can enter fresh air channel (100) and is in with the air exhaust that enters through air exhaust inlet (5) heat exchange core (14) department carries out the heat transfer, and through fresh air sucked through fresh air inlet (1) can also enter in fresh air bypass channel (200), the air current in fresh air bypass channel (200) directly passes through without heat exchange core (14) heat transfer fresh air outlet (19) gets into indoorly.
2. The fresh air conditioner according to claim 1, wherein:
the fresh air heat exchanger further comprises an exhaust cavity (300), the exhaust cavity (300) is communicated with the exhaust inlet (5), the fresh air channel (100) can be communicated with the fresh air inlet (1), and the heat exchange core (14) is located between the fresh air channel (100) and the exhaust cavity (300) so that fresh air in the fresh air channel (100) and exhaust air in the exhaust cavity (300) exchange heat at the heat exchange core (14);
and the fresh air bypass channel (200) can also be communicated with the fresh air inlet (1), and the heat exchange core body (14) does not exchange heat with the fresh air bypass channel (200).
3. A fresh air conditioner according to claim 2, wherein:
the fresh air channel (100) is arranged in the exhaust cavity (300), the fresh air bypass channel (200) is also arranged in the exhaust cavity (300), the fresh air channel (100) is connected with the fresh air bypass channel (200), and the heat exchange core (14) is only in contact with the fresh air channel (100) for heat exchange; the exhaust outlet (11) is communicated with the exhaust chamber (300), and an exhaust fan (12) is further arranged in the exhaust chamber (300).
4. A fresh air conditioner according to claim 2 or 3, wherein:
the fresh air device is characterized by further comprising a fresh air chamber (400), wherein the fresh air chamber (400) is communicated between the fresh air inlet (1) and the fresh air channel (100) or the fresh air bypass channel (200), one end of the fresh air chamber (400) is communicated with the fresh air inlet (1), and the other end of the fresh air chamber (400) is communicated with the fresh air channel (100) or the fresh air bypass channel (200); and the inside of new trend cavity (400) still is provided with new trend filter (3) and new trend preheating device (4), along the air current direction of flow, the new trend that gets into in new trend import (1) can flow through in proper order new trend filter (3) with new trend preheating device (4).
5. The fresh air conditioner according to claim 4, wherein:
the fresh air chamber (400) is also internally provided with a first filter (2), and the first filter (2) is arranged between the fresh air filter (3) and the fresh air inlet (1);
and a second filter (6) is also arranged at the exhaust air inlet (5) to filter indoor exhaust air sucked by the exhaust air inlet (5).
6. A fresh air conditioner according to any one of claims 1 to 5 wherein:
the fresh air channel (100) can be controlled to be opened or closed by the fresh air valve (15), and the fresh air bypass channel (200) can be controlled to be opened or closed by the fresh air valve (15);
fresh air blast gate (15) are swept wind blade, fresh air bypass blast gate motor (152) and fresh air bypass and are swept wind blade including fresh air blast gate motor (151), fresh air, are swept wind blade and are located in fresh air wind channel (100), fresh air bypass is swept wind blade and is located in fresh air bypass wind channel (200), fresh air blast gate motor (151) can be controlled fresh air is swept wind blade motion and is in order to open or close fresh air passageway (100), fresh air bypass blast gate motor (152) can be controlled fresh air bypass is swept wind blade motion and is in order to open or close fresh air bypass passageway (200).
7. The fresh air conditioner according to claim 6, wherein:
still include inner loop cavity (500), inner loop wind import (7) and inner loop blast gate (8), inner loop wind import (7) with inner loop cavity (500) intercommunication, the one end of inner loop cavity (500) still with fresh air channel (100) with fresh air bypass channel (200) communicate respectively, just the other end of inner loop cavity (500) still with fresh air outlet (19) intercommunication, inner loop blast gate (8) can be right inner loop wind import (7) control is opened or is closed.
8. The fresh air conditioner according to claim 7, wherein:
a third filter (9) is arranged at the downstream end of the air flow of the internal circulation air inlet (7),
a fresh air fan (17) and a heat exchanger (18) are arranged in the internal circulation chamber (500), and a fresh air outlet (19) leads to the interior of the chamber;
a fresh air temperature and humidity sensor (10) and a carbon dioxide sensor (16) are also arranged in the internal circulation chamber (500); the fresh air conditioner also comprises an electric controller (13).
9. The fresh air conditioner according to claim 8, wherein:
the fresh air fan (17) comprises a fresh air motor (172), a first fresh air volute (171) and a second fresh air volute (173), and the fresh air motor (172) can be connected with the first fresh air volute (171) and the second fresh air volute (173) at the same time.
10. A control method of a fresh air conditioner according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
a detection step of detecting the concentration C of indoor carbon dioxide and the indoor ambient temperature TInner partAnd outdoor ambient temperature TOuter cover；
A judging step of judging the relationship between the carbon dioxide concentration C and the set concentration A and judging the indoor environment temperature TInner partAnd indoor set temperature TIs provided withThe relationship between them, and the judgment of the outdoor ambient temperature TOuter coverTemperature T of indoor environmentInner partThe relationship between;
a control step of controlling the indoor ambient temperature T based on the relationship between the carbon dioxide concentration C and the set concentration AInner partAnd indoor set temperature TIs provided withThe relationship between, and the outdoor ambient temperature TOuter coverTemperature T of indoor environmentInner partThe fresh air conditioner is controlled to execute one of a fresh air mode, a mixed air mode, an internal circulation mode and a fresh air bypass mode.
11. The control method according to claim 10, characterized in that:
when including simultaneously air exhaust fan (12), new trend blast gate motor (151), new trend bypass blast gate motor (152) and inner loop blast gate (8):
in the judging step, the judgment condition 1 is that C is more than or equal to A, and the judgment condition 2 is that-T1 is more than or equal to TInner part-TIs provided withT is not more than T1, and the judgment condition 3 is that-T2 is not more than TOuter cover-TInner part≤T2；
In the control step, if the judgment condition 1 is not met, the exhaust fan (12) and the fresh air valve motor (151) are controlled to be closed, the fresh air bypass air valve motor (152) is closed, the internal circulation air valve (8) is opened, and the internal circulation mode is operated;
when judging that the determination condition 1 is satisfied; when the judgment condition 2 is not met, controlling to open a fresh air valve motor (151), close a fresh air bypass air valve motor (152), open the internal circulation air valve (8), open the exhaust fan (12) and operate the air mixing mode;
when the judgment condition 1, the judgment condition 2 and the judgment condition 3 are simultaneously met, controlling to close an internal circulation air valve (8), close a fresh air valve motor (151), open a fresh air bypass air valve motor (152), open the exhaust fan (12) and operate a fresh air bypass mode;
when the judgment condition 1 is met, the judgment condition 2 is met, and the judgment condition 3 is not met, controlling to close an internal circulation air valve (8), open a fresh air valve motor (151), close a fresh air bypass air valve motor (152), open the exhaust fan (12), and operating a full fresh air mode;
wherein A is a set carbon dioxide concentration value, T1 is a first set temperature value, and T2 is a second set temperature value.
12. The control method according to claim 11, characterized in that:
a takes 900-1100PPM, T1 takes 1-3 ℃ and T2 takes 2-5 ℃.
13. The control method according to claim 11, characterized in that:
when still including fresh air preheating device (4):
the determining step may further determine whether or not a determination condition 4 is satisfied: t isRing (C)＜T3；
And in the control step, if the judgment condition 4 is met, the fresh air preheating device (4) is turned on, and if the judgment condition 4 is not met, the fresh air preheating device 4 is turned off, wherein TRing (C)At ambient temperature, T3 is the third set point temperature.
CN202111470249.5A 2021-12-03 2021-12-03 Fresh air conditioner and control method thereof Pending CN114234279A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115435480A (en) * 2022-09-16 2022-12-06 珠海格力电器股份有限公司 Control method and device of fresh air fan and fresh air fan

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115435480A (en) * 2022-09-16 2022-12-06 珠海格力电器股份有限公司 Control method and device of fresh air fan and fresh air fan

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