CN114151860B - Fresh air conditioner and control method thereof - Google Patents
Fresh air conditioner and control method thereof Download PDFInfo
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- CN114151860B CN114151860B CN202111470943.7A CN202111470943A CN114151860B CN 114151860 B CN114151860 B CN 114151860B CN 202111470943 A CN202111470943 A CN 202111470943A CN 114151860 B CN114151860 B CN 114151860B
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Images
Classifications
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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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
- F24F1/0038—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room in combination with simultaneous exhaustion of inside air
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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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the 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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- 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
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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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
- 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
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
- F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
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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
- 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
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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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
Landscapes
- 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)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Central Air Conditioning (AREA)
Abstract
The invention provides a fresh air conditioner and a control method thereof, wherein the fresh air conditioner comprises: the fresh air inlet, the exhaust air outlet, the fresh air outlet, the heat exchange core body, the exhaust air channel and the exhaust air bypass channel, the exhaust air sucked through the exhaust air inlet can enter the exhaust air channel and exchange heat with the fresh air entering through the fresh air inlet at the heat exchange core body, the exhaust air sucked through the exhaust air inlet can also enter the exhaust air bypass channel, and the air flow in the exhaust air bypass channel is directly discharged outdoors through the exhaust air outlet without passing through the heat exchange core body for heat exchange. According to the invention, the exhaust bypass channel does not exchange heat with the heat exchange core, so that the outdoor fresh air and the indoor exhaust air do not need to flow through the heat exchange core for heat exchange under the condition of smaller temperature difference, thereby effectively reducing the load when the fresh air heat exchange is not needed, reducing the wind resistance and prolonging the service life of the system.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a fresh air conditioner and a control method thereof.
Background
With the coming of the national 'double-carbon' strategy and the implementation of the policy of energy conservation and emission reduction, people put forward higher requirements on indoor air environment in the sand dust and haze weather which often appear in recent years. In order to meet the demand of people for a healthier and more comfortable indoor air environment, indoor air treatment equipment is on the market.
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 equipment have only to exchange and heat recovery indoor outer air, and some have realized having carried out filtering capability to the air, and air purifier then mainly carries out purification treatment to 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 heat 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 the exhaust air, the exhaust air channel can enter the exhaust air channel, and exchange heat with the fresh air entering through the fresh air inlet at the heat exchange core, the exhaust air sucked through the exhaust air inlet can also enter the exhaust air bypass channel, and the air flow in the exhaust air bypass channel is directly discharged outdoors through the exhaust air outlet without exchanging heat through the heat exchange core.
In some embodiments, the fresh air device further comprises a fresh air chamber, the fresh air chamber is communicated with the fresh air inlet, and the heat exchange core is located between the exhaust channel and the fresh air chamber, so that exhaust air in the exhaust channel and fresh air in the fresh air chamber exchange heat at the heat exchange core;
and the air exhaust bypass channel can also be communicated with the air exhaust inlet, and the heat exchange core does not exchange heat with the air exhaust bypass channel.
In some embodiments, the exhaust channel is disposed in the fresh air chamber, the exhaust bypass channel is also disposed in the fresh air chamber, the exhaust channel is connected with the exhaust 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 channel, and an air exhaust fan is further arranged in the air exhaust outlet.
In some embodiments, the exhaust device further comprises an exhaust chamber, the exhaust chamber is arranged between the exhaust inlet and the exhaust channel or the exhaust bypass channel in a communication manner, one end of the exhaust chamber is communicated with the exhaust inlet, and the other end of the exhaust chamber is communicated with the exhaust channel or the exhaust bypass channel.
In some embodiments, a fresh air filter and the fresh air preheating device are further arranged inside the fresh air chamber, and fresh air entering the fresh air inlet can sequentially flow through the fresh air filter and the fresh air preheating device along the airflow flowing direction; the fresh air chamber is also internally provided with a first filter, and the first filter is arranged 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 air exhaust device further comprises an air exhaust air valve, wherein the air exhaust air valve can control the air exhaust channel to be opened or closed, and the air exhaust air valve can also control the air exhaust bypass channel to be opened or closed;
the exhaust air valve also comprises an exhaust air valve motor, an exhaust air sweeping blade, an exhaust bypass air valve motor and an exhaust bypass air sweeping blade, wherein the exhaust air sweeping blade is positioned in the exhaust channel, the exhaust bypass air sweeping blade is positioned in the exhaust bypass channel, the exhaust air valve motor can control the exhaust air sweeping blade to move so as to open or close the exhaust channel, and the exhaust bypass air valve motor can control the exhaust air sweeping blade to move so as to open or close the exhaust bypass channel.
In some embodiments, the fresh air treatment 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 chamber, 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 inner circulation air inlet to be opened or closed.
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 T Inner part And outdoor ambient temperature T Outer 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 T Inner part And indoor set temperature T Is provided with The relationship between them, and the judgment of the outdoor ambient temperature T Outer cover Temperature T of indoor environment Inner part The 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 A Inner part And indoor set temperature T Is provided with The relationship between, and the outdoor ambient temperature T Outer cover Temperature T of indoor environment Inner part The 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 a fresh air blower, a vent damper motor, a vent bypass damper motor, and an internal circulation damper are included 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 T Inner part -T Is provided with T1 or less, and-T2 or less under the judgment condition 3 Outer cover -T Inner part ≤T2；
In the control step, if the judgment condition 1 is not met, the fresh air fan, the exhaust air valve motor and the exhaust bypass air valve motor are controlled to be closed, the internal circulation air valve is opened, and an 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 an exhaust air valve motor, close an exhaust bypass air valve motor, open the internal circulation air valve, open the fresh air fan and operate an air mixing 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 the internal circulation air valve, open the air exhaust air valve motor, close the air exhaust bypass air valve motor, open the fresh air fan, and operating a full fresh air 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 an exhaust air valve motor, open an exhaust bypass air valve motor, open the fresh air fan and run an exhaust bypass 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 ranges from 900 to 1100PPM, T1 ranges from 1 ℃ to 3 ℃, and T2 ranges from 2 ℃ to 5 ℃.
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 is Ring (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 is turned off, wherein T Ring (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 inlet and the fresh air outlet which are arranged on the fresh air conditioner can introduce fresh air from the outside to the inside, and can introduce gas from the inside to the outside through the air exhaust inlet and the air exhaust outlet, so that the exchange of fresh air flow and dirty air flow inside and outside the room is effectively finished, and the heat exchange core, the air exhaust channel and the air exhaust bypass channel are arranged, so that the heat exchange between indoor exhaust air and the outdoor fresh air can be realized through the heat exchange core when the indoor exhaust air enters the air exhaust channel, and certain heat or cold can be transferred to the outdoor fresh air by utilizing the indoor exhaust air when the temperature difference between the outdoor fresh air and the indoor fresh air is large, so that the energy of the indoor exhaust air is effectively recovered (mainly recovered), the energy recovery function is realized, and the good energy-saving effect is realized while the quality of the indoor air is effectively improved; the air exhaust bypass channel can also pass through the heat exchange core body, and the heat exchange between the outdoor fresh air and the indoor exhaust air is not carried out, so that the fresh air does not need to flow through the heat exchange core body for heat exchange under the condition that the temperature difference between the outdoor fresh air and the indoor exhaust air is small, the load when the fresh air is not needed for heat exchange is effectively reduced, the wind resistance is reduced, and the service life of the system is prolonged;
2. the fresh air environment-control integrated 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 the indoor temperature and humidity, the CO2 concentration and the PM2.5 parameter state 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 isbase:Sub>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 in the exhaust bypass mode according to the present invention;
FIG. 8 is a flow chart of the control method of the fresh air conditioner according to the present invention;
fig. 9 is a schematic view of the whole internal structure of the fresh air conditioner of the present invention (alternative embodiment one);
FIG. 10 isbase:Sub>A cross-sectional view A-A of FIG. 9 of the present invention (alternate embodiment one);
FIG. 11 isbase:Sub>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 isbase:Sub>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 air exhaust outlet; 12. an exhaust fan; 13. an electric controller; 14. a heat exchange core; 141. a first core; 142. a second core; 15. an air exhaust valve; 16. a carbon dioxide sensor; 17. a fresh air fan; 18. a heat exchanger; 19. a fresh air outlet; 151. an exhaust air valve motor; 152. an exhaust bypass air valve motor; 171. a first fresh air volute; 172. a fresh air motor; 173. a second fresh air volute; 100. an air exhaust channel; 200. an exhaust bypass channel; 300. a fresh air chamber; 400. an exhaust chamber; 500. an internal circulation chamber.
Detailed Description
As shown in fig. 1 to 14, the present invention provides a fresh air conditioner, comprising:
the indoor exhaust air sucked through the exhaust air inlet 5 can enter the exhaust air channel 100 and exchange heat with the fresh air entering through the fresh air inlet 1 at the heat exchange core 14, the fresh air sucked through the exhaust air inlet 5 can also enter the exhaust air bypass channel 200, and the air flow in the exhaust air bypass channel 200 directly passes through the exhaust air outlet 11 without passing through the heat exchange core 14 for heat exchange and is discharged outdoors.
The fresh air inlet and the fresh air outlet which are arranged on the fresh air conditioner can introduce fresh air from the outside to the inside, and can introduce gas from the inside to the outside through the air exhaust inlet and the air exhaust outlet, so that the exchange of fresh air flow and dirty air flow inside and outside the room is effectively finished, and the heat exchange core, the air exhaust channel and the air exhaust bypass channel are arranged, so that the heat exchange between indoor exhaust air and the outdoor fresh air can be realized through the heat exchange core when the indoor exhaust air enters the air exhaust channel, and certain heat or cold can be transferred to the outdoor fresh air by utilizing the indoor exhaust air when the temperature difference between the outdoor fresh air and the indoor fresh air is large, so that the energy of the indoor exhaust air is effectively recovered (mainly recovered), the energy recovery function is realized, and the good energy-saving effect is realized while the quality of the indoor air is effectively improved; the air exhaust bypass channel can also be used for exchanging heat with the heat exchange core body, so that the 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-control integrated 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 the indoor temperature and humidity, the CO2 concentration and the PM2.5 parameter state in real time and effectively adjust the indoor temperature and humidity.
The heat exchange core of the present invention is preferably a 4-sided polygonal core, and the air conditioner is preferably a vertical air conditioner structure.
The invention relates to a fresh air environment-controlled integrated machine, belonging to an indoor machine.A cavity is divided into different air channels by a partition plate inside the machine, and the machine mainly comprises a fresh air channel, an exhaust bypass channel and an internal circulation channel; as shown in fig. 1, the machine type has 5 tuyeres: fresh air inlet 1, exhaust inlet 5, internal circulation air inlet 7, exhaust outlet 11 and fresh air outlet 19. The fresh air inlet 1 is connected with an outdoor air pipe to introduce outdoor fresh air; the air exhaust inlet 5 is connected with indoor air to be introduced; the internal circulation air inlet 7 is connected with indoor introduced indoor air; the air outlet 11 is connected with an outdoor air pipe to discharge indoor air; the fresh air outlet 19 is connected with the fresh air which is introduced into the room and filtered and purified. As shown in FIG. 2, the upper end of the partial section A-A isbase:Sub>A heat exchange core 14, which belongs to the exhaust channel; the lower end is a hollow structure and belongs to an exhaust bypass channel. As shown in fig. 3, the exhaust air valve 15 in the partial sectional view of B-B is a dual-motor structure, the exhaust air valve motor 151 controls the air outlet of the exhaust channel, and the exhaust bypass air valve motor 152 controls the air outlet of the exhaust bypass channel. The fresh air fan 17 is a double-volute fan driven by a single motor, the first fresh air volute 171 is a fresh air left volute, and the fresh air motor 172 and the second fresh air volute 173 are fresh air left volutes.
In some embodiments, the fresh air chamber 300 is further included, the fresh air chamber 300 is communicated with the fresh air inlet 1, the exhaust channel 100 can be communicated with the exhaust inlet 5, and the heat exchange core 14 is located between the exhaust channel 100 and the fresh air chamber 300, so that exhaust in the exhaust channel 100 and fresh air in the fresh air chamber 300 exchange heat at the heat exchange core 14;
and the exhaust bypass passage 200 can also be communicated with the exhaust inlet 5, and the heat exchange core body 14 does not exchange heat with the exhaust bypass passage 200.
The indoor air can be introduced from the fresh air inlet by arranging the fresh air cavity, the exhaust channel is communicated with the exhaust inlet to suck indoor exhaust air, the heat exchange core can perform heat exchange between the exhaust channel and the fresh air cavity, the exhaust bypass channel is communicated with the exhaust inlet to suck the exhaust air, but the exhaust bypass channel does not enable air flow to pass through the heat exchange core to exchange heat, so that the wind resistance can be effectively reduced, and the energy efficiency is improved.
In some embodiments, the exhaust channel 100 is disposed in the fresh air chamber 300, the exhaust bypass channel 200 is also disposed in the fresh air chamber 300, the exhaust channel 100 is connected to the exhaust bypass channel 200, and the heat exchange core 14 only contacts with the exhaust channel 100 for heat exchange; the exhaust outlet 11 is communicated with the exhaust channel 100, and the exhaust outlet 11 is further provided with an exhaust fan 12. The invention is a further preferable structure form, namely an exhaust channel is positioned in a fresh air cavity, an exhaust bypass channel is also positioned in the fresh air cavity, and the heat exchange core body is only in contact with the exhaust channel for heat exchange so as to utilize indoor exhaust to exchange heat with outdoor fresh air when the temperature difference between the indoor air and the outdoor air is large and recover energy; the heat exchange core is not communicated with the air exhaust bypass channel so as to close the fresh air channel when the indoor and outdoor temperature difference is small, and only the air exhaust bypass channel is used for ventilation, so that the wind resistance is effectively reduced; the fresh air cavity is communicated with the fresh air outlet so as to effectively introduce outdoor air into the room, and the air exhaust channel can be opened or closed by the arrangement of the air exhaust fan, so that the air exhaust cavity is communicated with the air exhaust inlet or not.
In some embodiments, the exhaust chamber 400 is further included, the exhaust chamber 400 is disposed between the exhaust inlet 5 and the exhaust channel 100 or the exhaust bypass channel 200 in a communicating manner, one end of the exhaust chamber 400 is communicated with the exhaust inlet 5, and the other end is communicated with the exhaust channel 100 or the exhaust bypass channel 200. The invention can be effectively communicated with the exhaust inlet by arranging the exhaust chamber, and exhaust air is conveyed to the exhaust channel or the exhaust bypass channel.
In some embodiments, a fresh air filter 3 and the fresh air preheating device 4 are further disposed inside the fresh air chamber 300, and fresh air entering from the fresh air inlet 1 can sequentially flow through the fresh air filter 3 and the fresh air preheating device 4 along the airflow direction; the fresh air chamber 300 is also 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 further arranged at the exhaust air inlet 5 to filter indoor exhaust air sucked by the exhaust air inlet 5.
According to the invention, the fresh air filter and the fresh air preheating device in the fresh air chamber can effectively perform filtering action and preheating action on fresh air, so that discomfort of a human body caused by the fresh air blown into the chamber is prevented; still through first filter and the second filter that sets up at the import of airing exhaust, can carry out the colating to new trend import department, block the outdoor impurity such as large granule thing that exists that gets into in the indoor new trend, the second filter carries out the filter effect when can airing exhaust the entering air exhaust cavity to indoor, prevents that impurity etc. from getting into in the air exhaust cavity, improves indoor exhaust's purity.
In some embodiments, a discharge air valve 15 is further included, the discharge air valve 15 can control the discharge channel 100 to open or close, and the discharge air valve 15 can also control the discharge bypass channel 200 to open or close;
the exhaust air valve 15 includes an exhaust air valve motor 151, an exhaust air sweeping blade, an exhaust bypass air valve motor 152, and an exhaust bypass air sweeping blade, the exhaust air sweeping blade is located in the exhaust passage 100, the exhaust bypass air sweeping blade is located in the exhaust bypass passage 200, the exhaust air valve motor 151 can control the exhaust air sweeping blade to move to open or close the exhaust passage 100, and the exhaust bypass air valve motor 152 can control the exhaust air sweeping blade to move to open or close the exhaust bypass passage 200.
The invention can control the opening or closing of the exhaust channel and the opening or closing of the exhaust bypass channel through the arrangement of the exhaust air valve, preferably, the exhaust air valve motor can perform the opening or closing function on the exhaust channel, and the exhaust bypass air valve motor can perform the opening or closing function on the exhaust bypass channel.
In some embodiments, the air-conditioning system further comprises an internal circulation chamber 500, an internal circulation air inlet 7 and an internal circulation air valve 8, wherein the internal circulation air inlet 7 is communicated with the internal circulation chamber 500, one end of the internal circulation chamber 500 is also communicated with the fresh air chamber 300, the other end of the internal circulation chamber 500 is also 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 chamber, outdoor fresh air can be sucked from the fresh air chamber, 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 to 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 carbon dioxide in the room and the ambient temperature T in the room Inner part And outdoor ambient temperature T Outer cover ；
A judging step of judging the relationship between the carbon dioxide concentration C and the set concentration A, and judgingAmbient temperature T in the compartment Inner part And indoor set temperature T Is provided with And determining the outdoor ambient temperature T Outer cover Temperature T of indoor environment Inner part The 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 A Inner part And indoor set temperature T Is provided with The relationship between, and the outdoor ambient temperature T Outer cover With the indoor ambient temperature T Inner part The 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 the fresh air blower 17, the exhaust air valve motor 151, the exhaust bypass air valve motor 152, and the internal circulation air valve 8 are included at the same time:
in the judging step, the judging condition 1 is that C is more than or equal to A, and the judging condition 2 is that-T1 is more than or equal to T Inner part -T Is provided with T1 or less, and-T2 or less under the determination condition 3 Outer cover -T Inner part ≤T2；
In the control step, if the determination condition 1 is not met, the fresh air fan 17, the exhaust air valve motor 151 and the exhaust bypass air valve motor 152 are controlled to be closed, the internal circulation air valve 8 is opened, and an 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 the exhaust air valve motor 151, close the exhaust bypass air valve motor 152, open the internal circulation air valve 8, open the fresh air fan 17 and operate the air mixing 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 the internal circulation air valve 8, open the exhaust air valve motor 151, close the exhaust bypass air valve motor 152, open the fresh air fan 17, and operating a fresh air 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 exhaust air valve motor 151, open the exhaust bypass air valve motor 152, open the fresh air fan 17 and run an exhaust bypass 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 exhaust air valve motor 151 controls the air valve to open, the fresh air bypass air valve motor 152 controls the air valve to close, and the internal circulation air valve 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 temperature of the outdoor fresh air 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 finish cooling 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 enters the heat exchange core 14, and finally is exhausted to the outside from the exhaust outlet 11 through 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: in this mode, as shown in fig. 5, the exhaust air flap motor 151 controls the air flap to open, the exhaust bypass air flap motor 152 controls the air flap to close, and the internal circulation air flap 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 fresh air enters a heat exchange core 14 of a fresh air channel after passing through a fresh air preheating device 4 (the temperature of the outdoor fresh air 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, is mixed with clean fresh air entering from the fresh air channel through an internal circulation air valve 8, 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, indoor air is introduced from the air exhaust inlet 5, filtered by the second filter 6 and then enters the heat exchange core 14, and 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 heat and humidity exchange, so that the energy-saving effect is realized.
An internal circulation mode: in this mode, as shown in fig. 6, the exhaust air flap motor 151 controls the air flap to be closed, the exhaust bypass air flap motor 152 controls the air flap to be closed, and the internal circulation air flap 8 is opened. 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.
An air exhaust bypass mode: in this mode, as shown in fig. 7, the exhaust air valve motor 151 controls the air valve to close, the exhaust bypass air valve motor 152 controls the air valve to close and open, and the internal circulation air valve 8 closes. The difference between this mode and the new air mode is that the new air enters the air exhaust bypass channel not passing through the heat exchange core 14 but passing through the air exhaust bypass air valve motor 152. The air resistance of airing exhaust under this mode reduces, and the fan 12 load of airing exhaust diminishes, and is more energy-conserving, does not pass through heat exchange core 14 simultaneously airing exhaust, 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 exhaust air valve motor 151, closing the exhaust bypass air valve motor 152, and operating the air mixing mode; if the judgment condition 1, the judgment condition 2 and the judgment condition 3 are simultaneously met, closing the internal circulation air valve 8 and operating a full fresh air mode; if the determination conditions 1 and 2 and the determination conditions 3 are satisfied, the internal circulation air valve 8 is closed, the exhaust air valve motor 151 is closed, the exhaust bypass air valve motor 152 is opened, and the exhaust bypass 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 is less than or equal to the indoor ambient temperature-indoor set temperature is less than or equal to T1
Determination condition 3: -T2. Ltoreq. Outdoor ambient temperature-indoor ambient temperature. Ltoreq. 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;
if the determination condition 1, the determination condition 2, and the determination condition 3 are satisfied at the same time, the following description has been given: the indoor heat exchange is not needed, the temperature difference between the indoor environment and the outdoor environment is small, a fresh air bypass mode is operated (when the environmental temperature is smaller than the set temperature, the temperature reduction requirement is not needed, only the fresh air requirement is needed, so that the indoor circulation is not needed, at the moment, the indoor environment temperature is larger than the outdoor environment temperature, the fresh air in a fresh air mode passes through the core body, the heat exchange with the discharged indoor air is realized, and the 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 required, and the condition 3 is not met, which indicates that the temperature difference between the outdoor and indoor is large, and fresh air heat exchange is required (when the difference between the environmental temperature and the set temperature is small, the temperature reduction requirement is not required, only fresh air is required, so that indoor circulation is not required, and at the moment, the difference between the indoor environment temperature and the outdoor environment temperature is small, the heat exchange significance is not large, so that a fresh air bypass mode is required to be started.)
Wherein: a is the set carbon dioxide concentration value of 900-1100PPM
T1 is a set temperature 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 ranges from 900 to 1100PPM, T1 ranges from 1 ℃ to 3 ℃, and T2 ranges from 2 ℃ to 5 ℃.
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 is Ring(s) ＜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 quadrangular heat exchange core 14 may be replaced with a square or a diamond.
As shown in FIG. 9, the lower end of the partial sectional view A-A isbase:Sub>A heat exchange core 14 belonging to the exhaust passage; the upper end is a hollow structure and belongs to an exhaust bypass channel. In the partial section view of B-B, the motor of the exhaust bypass air valve controls the air outlet of the exhaust bypass channel, and the motor of the exhaust air valve controls the air outlet of the exhaust channel.
Alternative embodiment two, as shown in figures 11-14,
the air exhaust bypass channel and the air exhaust channel can also be arranged left and right, and the heat exchange core body is an air exhaust channel; an exhaust bypass channel is additionally arranged.
As shown in fig. 11, the right end of the partial sectional viewbase:Sub>A-base:Sub>A isbase:Sub>A heat exchange core 14, which belongs to the exhaust passage; the left end is a hollow structure and belongs to an exhaust bypass channel. Correspondingly, air valves are arranged at the channel ports, an air exhaust air valve motor 151 controls air outlet of the air exhaust channel in a partial sectional view B-B, and an air exhaust bypass air valve motor 152 controls air outlet of the air exhaust bypass channel.
As shown in fig. 13, the left end of the partial sectional viewbase:Sub>A-base:Sub>A isbase:Sub>A heat exchange core 14, an exhaust bypass channel; the right end is a hollow structure and belongs to an exhaust channel. Correspondingly, corresponding air valves are arranged at the channel ports, as shown in fig. 14, in a partial sectional view of B-B, an exhaust air valve motor 151 controls air outlet of an exhaust channel, and an exhaust bypass air valve motor 152 controls air outlet of an exhaust 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, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be also considered as the protection scope of the present invention.
Claims (10)
1. A fresh air conditioner is characterized in that: the method comprises the following steps:
the air conditioner comprises a fresh air inlet (1), an exhaust air inlet (5), an exhaust air outlet (11), a fresh air outlet (19), a heat exchange core (14), an exhaust air channel (100) and an exhaust air bypass channel (200), wherein exhaust air sucked through the exhaust air inlet (5) can enter the exhaust air channel (100) and exchange heat with fresh air entering through the fresh air inlet (1) at the heat exchange core (14), the exhaust air sucked through the exhaust air inlet (5) can also enter the exhaust air bypass channel (200), and air flow in the exhaust air bypass channel (200) is directly discharged out of a room through the exhaust air outlet (11) without exchanging heat through the heat exchange core (14);
the fresh air exhaust device is characterized by further comprising a fresh air chamber (300), the fresh air chamber (300) is communicated with the fresh air inlet (1), and the heat exchange core (14) is located between the exhaust channel (100) and the fresh air chamber (300) so that exhaust in the exhaust channel (100) and fresh air in the fresh air chamber (300) exchange heat at the heat exchange core (14);
the exhaust bypass channel (200) can also be communicated with the exhaust inlet (5), and the heat exchange core body (14) does not exchange heat with the exhaust bypass channel (200);
the air exhaust device further comprises an air exhaust air valve (15), wherein the air exhaust air valve (15) can control the air exhaust channel (100) to be opened or closed, and the air exhaust air valve (15) can also control the air exhaust bypass channel (200) to be opened or closed; the exhaust air valve (15) comprises an exhaust air valve motor (151), an exhaust air sweeping blade, an exhaust bypass air valve motor (152) and an exhaust bypass air sweeping blade, the exhaust air sweeping blade is positioned in the exhaust channel (100), the exhaust bypass air sweeping blade is positioned in the exhaust bypass channel (200), the exhaust air valve motor (151) can control the exhaust air sweeping blade to move so as to open or close the exhaust channel (100), and the exhaust bypass air valve motor (152) can control the exhaust air sweeping blade to move so as to open or close the exhaust bypass channel (200);
the fresh air circulating system is characterized by further comprising an internal circulating chamber (500), an internal circulating air inlet (7) and an internal circulating air valve (8), wherein the internal circulating air inlet (7) is communicated with the internal circulating chamber (500), one end of the internal circulating chamber (500) is further communicated with the fresh air chamber (300), the other end of the internal circulating chamber (500) is further communicated with the fresh air outlet (19), and the internal circulating air valve (8) can control the internal circulating air inlet (7) to be opened or closed; 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 inside of the chamber;
a detection step of detecting the concentration C of indoor carbon dioxide and the indoor ambient temperature T Inner part And outdoor ambient temperature T Outer 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 T Inner part And indoor set temperature T Is provided with And determining the outdoor ambient temperature T Outer cover Temperature T of indoor environment Inner part The relationship between them;
a control step of controlling the indoor ambient temperature T based on the relationship between the carbon dioxide concentration C and the set concentration A Inner part And indoor set temperature T Is provided with The relationship between, and the outdoor ambient temperature T Outer cover With the indoor ambient temperature T Inner part The 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 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 T Inner part -T Is provided with T1 or less, and-T2 or less under the judgment condition 3 Outer cover - T Inner part ≤T2；
In the control step, if the judgment condition 1 is not met, the fresh air fan (17), the exhaust air valve motor (151) and the exhaust bypass air valve motor (152) are controlled to be closed, the internal circulation air valve (8) is opened, and an internal circulation mode is operated;
when judging that the judgment condition 1 is satisfied; when the judgment condition 2 is not met, controlling to open an exhaust air valve motor (151), close an exhaust bypass air valve motor (152), open the internal circulation air valve (8), open the fresh air fan (17) and operate an air mixing 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 an exhaust air valve motor (151), close an exhaust bypass air valve motor (152), open the fresh air fan (17), and operating a fresh air 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 an exhaust air valve motor (151), open an exhaust bypass air valve motor (152), open the fresh air fan (17) and operate an exhaust bypass 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.
2. The fresh air conditioner according to claim 1, wherein:
the exhaust channel (100) is arranged in the fresh air chamber (300), the exhaust bypass channel (200) is also arranged in the fresh air chamber (300), the exhaust channel (100) is connected with the exhaust bypass channel (200), and the heat exchange core body (14) is only in contact with the exhaust channel (100) for heat exchange; the exhaust outlet (11) is communicated with the exhaust channel (100), and an exhaust fan (12) is further arranged at the exhaust outlet (11).
3. A fresh air conditioner according to claim 1 or 2, wherein:
the exhaust device is characterized by further comprising an exhaust chamber (400), wherein the exhaust chamber (400) is communicated and arranged between the exhaust inlet (5) and the exhaust channel (100) or the exhaust bypass channel (200), one end of the exhaust chamber (400) is communicated with the exhaust inlet (5), and the other end of the exhaust chamber is communicated with the exhaust channel (100) or the exhaust bypass channel (200).
4. The fresh air conditioner according to claim 1, wherein:
a fresh air filter (3) and a fresh air preheating device (4) are further arranged inside the fresh air chamber (300), and fresh air entering the fresh air inlet (1) can sequentially flow through the fresh air filter (3) and the fresh air preheating device (4) along the airflow flowing direction;
the fresh air chamber (300) 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).
5. The fresh air conditioner according to claim 1, 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 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).
6. The fresh air conditioner according to claim 1, 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.
7. A control method of a fresh air conditioner according to any one of claims 1 to 6, 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 T Inner part And outdoor ambient temperature T Outer 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 T Inner part And indoor set temperature T Is provided with The relationship between them, and the judgment of the outdoor ambient temperature T Outer cover Temperature T of indoor environment Inner part The relationship between them;
a control step of controlling the indoor ambient temperature T based on the relationship between the carbon dioxide concentration C and the set concentration A Inner part And indoor set temperature T Is provided with The relationship between, and the outdoor ambient temperature T Outer cover Temperature T of indoor environment Inner part The 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.
8. The control method according to claim 7, characterized in that:
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 T Inner part -T Is provided with T1 or less, and-T2 or less under the judgment condition 3 Outer cover - T Inner part ≤T2；
In the control step, if the judgment condition 1 is not met, the fresh air fan (17), the exhaust air valve motor (151) and the exhaust bypass air valve motor (152) are controlled to be closed, the internal circulation air valve (8) is opened, and an internal circulation mode is operated;
when judging that the judgment condition 1 is satisfied; when the judgment condition 2 is not met, controlling to open an exhaust air valve motor (151), close an exhaust bypass air valve motor (152), open the internal circulation air valve (8), open the fresh air fan (17) and operate the air mixing 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 an exhaust air valve motor (151), close an exhaust bypass air valve motor (152), open the fresh air fan (17), and operating a fresh air 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 an exhaust air valve motor (151), open an exhaust bypass air valve motor (152), open the fresh air fan (17) and operate an exhaust bypass 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.
9. The control method according to claim 8, characterized in that:
a takes 900-1100PPM, T1 takes 1-3 ℃ and T2 takes 2-5 ℃.
10. The control method according to claim 8, 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 is Ring (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 is turned off, wherein T Ring(s) The ambient temperature and T3 is the third set temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111470943.7A CN114151860B (en) | 2021-12-03 | 2021-12-03 | Fresh air conditioner and control method thereof |
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| CN202111470943.7A CN114151860B (en) | 2021-12-03 | 2021-12-03 | Fresh air conditioner and control method thereof |
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| CN116734371A (en) * | 2022-03-10 | 2023-09-12 | 森德(中国)暖通设备有限公司 | Deep heat recovery fresh air system and anti-freezing control method thereof |
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