CN111765553A - Air epidemic prevention and purification system based on one-way wall-mounted fresh air machine - Google Patents
Air epidemic prevention and purification system based on one-way wall-mounted fresh air machine Download PDFInfo
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- CN111765553A CN111765553A CN202010554309.0A CN202010554309A CN111765553A CN 111765553 A CN111765553 A CN 111765553A CN 202010554309 A CN202010554309 A CN 202010554309A CN 111765553 A CN111765553 A CN 111765553A
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- 230000002265 prevention Effects 0.000 title claims abstract description 19
- 238000000746 purification Methods 0.000 title claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract 1
- 241000700605 Viruses Species 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 238000005034 decoration Methods 0.000 description 3
- 230000008520 organization Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 2
- 206010029803 Nosocomial infection Diseases 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 241000711573 Coronaviridae Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 238000007865 diluting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 239000013618 particulate matter Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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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
- F24F2110/12—Temperature of the outside 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
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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
- F24F2110/64—Airborne particle content
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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
- F24F2110/66—Volatile organic compounds [VOC]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
- Ventilation (AREA)
Abstract
The invention discloses an air epidemic prevention and purification system based on a one-way wall-mounted fresh air blower, which comprises the one-way wall-mounted fresh air blower and a whole-house controller which are distributed in a plurality of rooms, wherein a main control module in the whole-house controller is communicated with the one-way wall-mounted fresh air blower through an RS485 communication module, and the control module of the one-way wall-mounted fresh air blower controls the blower to rotate forwards or backwards so as to realize a positive pressure air supply mode or a negative pressure air exhaust mode of the one-way wall-mounted fresh air blower; under being in malleation air supply mode, the fan is positive to be moved, and outdoor new trend is introduced, and under fluidic pressure effect, the check valve clack is closed, and the new trend is arranged indoor after HEPA cassette purification filtration, and under being in the negative pressure mode of airing exhaust, the fan is backward moved, and the check valve clack is opened, and indoor return air is introduced, through check valve and fan, arranges to outdoor. The invention has simple structure and reasonable design, achieves the aim of comfort, reduces the economic cost and has strong epidemic prevention capability.
Description
Technical Field
The invention relates to an air epidemic prevention and purification system, in particular to an air epidemic prevention and purification system based on a one-way wall-mounted fresh air fan.
Background
The one-way wall-hanging new fan can be installed in living and working places such as families, schools, public places, office fields and the like, is suitable for installation after decoration, does not need to lay a pipeline, does not influence suspended ceilings and overall decoration, is convenient for later maintenance, and can provide fresh, rich oxygen and clean indoor air quality requirements for users. However, with the reconcognition of infectious diseases caused by the novel coronavirus epidemic, the existing one-way wall-mounted fresh air machine in the current market generally has the defects that the virus diffusion cannot be prevented in an indoor effective airflow tissue form, the virus and bacteria cannot be diluted quickly, the cross infection cannot be prevented, the epidemic prevention capacity is weak, the name is one-way wall-mounted fresh air purifier, the application numbers are CN201721133704.1 and a one-way flow fresh air system, and the two utility model patents with the application numbers of CN201821867136.2 all have the problems.
Disclosure of Invention
In order to solve the problems, the invention provides an air epidemic prevention purification system which is suitable for being installed after decoration in families, schools, public places, office buildings and the like, has certain epidemic prevention capacity and is low in cost.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention relates to an air epidemic prevention and purification system based on one-way wall-mounted fresh air fans, which comprises one-way wall-mounted fresh air fans distributed in a plurality of rooms and a whole room controller, wherein a main control module in the whole room controller is communicated with a control module in the nearest one-way wall-mounted fresh air fan through an RS485 communication module, the control module in the one-way wall-mounted fresh air fan carries out signal transmission through an upper computer communication module and the RS485 communication module in the whole room controller, the upper computer communication module in each one-way wall-mounted fresh air fan is provided with a signal transmitting port A, a signal receiving port B and a grounding port GND, the signal transmitting port A and the signal receiving port B of the upper computer communication module of the next one-way wall-mounted fresh air fan are respectively connected with the signal transmitting port A and the signal receiving port B of the upper computer communication module of the previous one-way wall-mounted fresh, the full-house controller is provided with a display screen which is electrically connected with the main control module, the control module in the one-way wall-mounted fresh air machine also comprises an air quality detection sensor for detecting the indoor air quality, an outdoor temperature sensor and a fan output module, the control module in the one-way wall-mounted fresh air machine is electrically connected with a display panel on the outer surface of the one-way wall-mounted fresh air machine, the fan is a bidirectional forward and reverse rotation type fan, and the control module controls the fan to rotate forward or reverse so as to realize a positive pressure air supply mode or a negative pressure air exhaust mode of the one-way wall-mounted;
when the air conditioner is in a positive pressure air supply mode, the fan operates in a positive direction, outdoor fresh air is introduced from an outdoor fresh air port, the valve clack of the check valve is closed under the pressure action of fluid, and the fresh air is purified and filtered through the HEPA filter plate and is discharged into a room from an indoor air port;
under the negative pressure air exhaust mode, the fan runs reversely, the check valve clack is opened under the pressure action of fluid, indoor return air is introduced from the indoor air port, passes through the check valve and the fan and is exhausted from the outdoor fresh air port to the outdoor.
The invention is further improved in that: the air quality detection sensor comprises CO2Sensors, VOC sensors and PM2.5 sensors.
The invention is further improved in that: the one-way wall-hanging new fan still includes the organism, is provided with indoor wind gap at the organism top, is provided with check valve and HEPA filter screen in the organism of indoor wind gap lower extreme, and check valve and HEPA filter screen are in same height, and with the organism inside be divided into cavity and cavity down, the fan slope sets up in cavity down, is provided with just imitates the filter screen below the fan, and outdoor new wind gap sets up the rear side at the organism of just imitating the filter screen lower extreme.
The invention is further improved in that: and a HEPA filter screen access hole and a fan access hole are formed in the side wall of the machine body corresponding to the HEPA filter screen and the fan.
The invention has the beneficial effects that: when the one-way wall-mounted fresh air machine is in an air supply mode, the micro-positive pressure is kept indoors, air enters the room from the outside and is discharged from a window seam and the like of a toilet, the fresh air transmission path is long, and the requirements of comfort and cleanness are met. When the one-way wall-mounted fresh air machine is in an air exhaust mode, micro negative pressure is kept indoors, the retention time of the breathed air in a room is short, air in other rooms flows in from gaps such as door seams, and therefore diffusion of pollutants such as viruses is prevented, air exchange efficiency is high, and pollution discharge efficiency is high. Through a network distributed system, the micro-positive pressure and the local micro-negative pressure of the whole room can be realized, the air flow organization form of the whole room is changed, the diffusion of pollutants such as viruses and the like is better prevented, and the cross infection is avoided. Network distribution systems are optional. Even if the mode is not selected through the plurality of the one-way wall-mounted fresh air fans, the effect of changing the whole room airflow organization form can be achieved. The switching of two modes can be realized through the switching of the positive and negative rotation of the fan, so that the structure of the one-way wall-mounted fresh air fan is simplified, the types of internal components are reduced, the production cost is reduced, and the fan has a larger market.
The invention has simple structure and reasonable design, achieves the aim of comfort, reduces the economic cost and has strong epidemic prevention capability.
Drawings
Fig. 1 is a network distributed control topology of the present invention.
Fig. 2 is a control block diagram of a one-way flow wall-mounted fresh air machine.
Fig. 3 is a schematic structural diagram of a one-way wall-mounted fresh air fan.
Fig. 4 is a side view of a one-way wall mounted fresh air machine.
Fig. 5 is a front view of a one-way wall mounted fresh air machine.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be described in detail with reference to the following examples and drawings, which are provided for the purpose of illustration only and do not limit the scope of the present invention.
As shown in figures 1-5, the invention is an air epidemic prevention and purification system based on one-way wall-mounted fresh air machine, the air epidemic prevention and purification system comprises one-way wall-mounted fresh air machines 1 distributed in a plurality of rooms and a whole-house controller 2 installed in a hall, a main control module in the whole-house controller 2 is communicated with a control module 11 in the nearest one-way wall-mounted fresh air machine 1 through an RS485 communication module 21, the control module in the one-way wall-mounted fresh air machine 1 carries out signal transmission through an upper computer communication module 111 and the RS485 communication module 21 in the whole-house controller 2, the upper computer communication module 111 in each one-way wall-mounted fresh air machine 1 is provided with a sending signal port A, a receiving signal port B and a grounding port GND, and the sending signal port A and the receiving signal port B of the upper computer communication module 111 of the next one-way wall-mounted fresh air machine 1 are respectively connected with the sending signal port A and the receiving signal port B of the upper computer communication, The control module 11 in the unidirectional wall-mounted fresh air fan 1 is electrically connected with a display panel on the outer surface of the unidirectional wall-mounted fresh air fan 1, the fan in the unidirectional wall-mounted fresh air fan 1 is a bidirectional forward/reverse rotating fan, and the fan 12 is controlled by the main control module or the control module 11 to rotate forward or reverse to realize a positive pressure air supply mode or a negative pressure air exhaust mode of the unidirectional wall-mounted fresh air fan 1;
in a positive pressure air supply mode, the fan 12 operates in a positive direction, outdoor fresh air is introduced from an outdoor fresh air port, a valve clack of a check valve 13 is closed under the pressure action of fluid, and the fresh air is purified and filtered through an HEPA filter 14 and is discharged into a room from an indoor air port 15;
in the negative pressure exhaust mode, the fan 12 runs in reverse, the check valve 13 valve clack is opened under the pressure of fluid, and indoor return air is introduced from the indoor air inlet 15, passes through the check valve 13 and the fan 12 and is exhausted from the outdoor fresh air inlet to the outdoor.
The air quality detection sensor comprises CO2Sensor 114, VOC sensor 115 and PM2.5 sensor 116.
One-way wall-hanging new fan 1 still includes the organism, is provided with indoor wind gap 15 at the organism top, is provided with check valve 13 and HEPA filter screen in the organism of indoor wind gap 15 lower extreme, and check valve 13 and HEPA filter screen are in same height, and divide into cavity and lower cavity with organism inside, and the slope of fan 12 sets up in cavity down, is provided with just imitates filter screen 18 below fan 12, and outdoor new wind gap sets up the rear side at the organism of just imitating filter screen 18 lower extreme. A HEPA filter screen access hole 16 and a fan access hole 17 are arranged on the side wall of the machine body corresponding to the HEPA filter screen and the fan 12.
The air quality detection sensor comprises CO2Sensor 114, VOC sensor 115 and PM2.5 sensor 116.
Besides the mode and wind speed of the corresponding one-way flow wall-mounted fresh air fan manually operated by the user through the display panel, the control module 11 can automatically operate according to indoor air data detected by the CO2 sensor 114, the VOC sensor 115 and the PM2.5 sensor 116, and the VOC is poor, namely the detected formaldehyde concentration is more than 0.1 mg/m3Or the benzene concentration is more than 0.11 mg/m3Or the TVOC concentration is more than 0.6 mg/m3Or PM2.5 particulate matter concentration is more than 75 mu g/m3Or CO2When the concentration is more than 1000 PPM, the negative pressure air exhaust mode is automatically switched, the air speed is high, and the air speed gear before switching is recorded through a storage module on the control module 11; when the wall-hanging new fan of uniflow 1 is in the automatic operation course of working, control module 11 detects the air quality, before the air quality index reaches the excellent standard, the excellent concrete standard data of air quality satisfies simultaneously: at a formaldehyde concentration of less than 0.08 mg/m3The concentration of benzene is less than 0.09 mg/m3The TVOC concentration is less than 0.5 mg/m3Under the condition that VOC is excellent, and the concentration of PM2.5 particles is less than 35 mu g/m3、CO2The concentration is less than 500 PPM, the one-way flow wall-mounted fresh air fan 1 is always negativeA pressure exhaust mode, wherein the wind speed is high; when the one-way flow wall-mounted fresh air fan 1 is in an automatic operation working process, the control module 11 detects the air quality in real time, after the air quality index reaches an excellent standard, the control module performs air quality data comparison once every 5 minutes, if the air quality data are found to be not continuously optimized within the working time of 5 minutes, the one-way flow wall-mounted fresh air fan 1 exits from a negative pressure air exhaust mode, is switched to a positive pressure air supply mode, and is restored to a wind speed gear before switching, and the process is realized through the programming of a single chip microcomputer in the control module.
The whole house display screen comprises the following operation steps: when the backlight is off, clicking a screen button for the first time only plays a role of awakening the backlight, and when the backlight is on, performing button operation is effective;
turning on and turning off the machine: the power can be turned on and off by pressing a power on/off key;
adjusting the wind speed: in the starting state, a wind speed key is pressed to adjust the wind speed by 1-3 steps;
mode switching: pressing a mode key, firstly selecting a one-way flow wall-mounted fresh air fan 1 to be operated in a room, and then switching modes: air supply-air exhaust.
In ordinary times, a user manually operates the whole house display screen, the one-way flow wall-mounted fresh air blower 1 for controlling each room is in a positive pressure air supply mode, fresh air operation air supply is achieved, micro positive pressure is formed in the whole house, outdoor viruses, PM2.5 and other pollutants are prevented from permeating into the whole house, and air breathed by a human body is discharged outdoors through door and window gaps and a toilet air outlet. In a special period, a user manually operates the whole house display screen, controls the one-way flow wall-mounted fresh air fan 1 of the polluted room to be in a negative pressure air exhaust mode, quickly exhausts indoor pollutants, achieves the effect of quickly diluting the concentration of the pollutants such as viruses and bacteria and the like, and enables the polluted room to form local negative pressure; and controlling the fresh air fans of other rooms to be in a positive pressure air supply mode, and keeping micro-positive pressure. Indoor air flows from the positive pressure room to the negative pressure room, and virus diffusion is prevented by changing the whole room air flow organization form. The switching between the positive pressure air supply mode and the negative pressure air exhaust mode is realized only by changing the running direction of the fan, and the change of the running direction of the motor of the fan is realized by circuit control in the prior art.
The invention has simple structure and reasonable design, achieves the aim of comfort, reduces the economic cost and has strong epidemic prevention capability.
Claims (4)
1. The utility model provides an air epidemic prevention clean system based on one-way wall-hanging new fan, air epidemic prevention clean system is including distributing at one-way wall-hanging new fan (1) and whole room controller (2) in several rooms, master control module in the whole room controller (2) communicates nearest through RS485 communication module (21) control module (11) in one-way wall-hanging new fan (1), should control module (11) in one-way wall-hanging new fan (1) through host computer communication module (111) with RS485 communication module (21) in the whole room controller (2) carry out signal transmission, host computer communication module (111) in every one-way wall-hanging new fan (1) all have signal transmission port A, received signal port B and ground connection port GND, and next one the signal transmission port A of host computer communication module (111) of one-way wall-hanging new fan (1), Receive signal port B respectively with the previous send signal port A, the receive signal port B of host computer communication module (111) of one-way wall-hanging new fan (1) are connected be provided with the display screen on full room controller (2), the display screen with the master control module electricity is connected, control module (11) in one-way wall-hanging new fan (1) still include the air quality who detects indoor air quality and detect sensor, outdoor temperature sensor (113) and fan output module (112), in one-way wall-hanging new fan (1) control module (11) with this the display panel electricity of one-way wall-hanging new fan (1) surface is connected, its characterized in that: the fan in the one-way wall-mounted fresh air fan (1) is a two-way forward and reverse rotation fan, and the fan (12) is controlled to rotate forward or reversely through the main control module or the control module (11) so as to realize a positive pressure air supply mode or a negative pressure air exhaust mode of the one-way wall-mounted fresh air fan (1);
under the positive pressure air supply mode, the fan (12) operates in the positive direction, outdoor fresh air is introduced from an outdoor fresh air port, the valve clack of the check valve (13) is closed under the pressure action of fluid, and the fresh air is purified and filtered through the HEPA filter (14) and is discharged to the indoor from an indoor air port (15);
and in a negative pressure air exhaust mode, the fan (12) runs in a reverse direction, the valve clack of the check valve (13) is opened under the pressure action of fluid, indoor return air is introduced from the indoor air opening (15), passes through the check valve (13) and the fan (12) and is exhausted from the outdoor fresh air opening to the outside.
2. The air epidemic prevention and purification system based on the one-way wall-mounted fresh air machine according to claim 1, characterized in that: the air quality detection sensor comprises CO2A sensor (114), a VOC sensor (115), and a PM2.5 sensor (116).
3. The air epidemic prevention and purification system based on the one-way wall-mounted fresh air machine according to claim 1, characterized in that: one-way wall-hanging new fan (1) still includes the organism top is provided with indoor wind gap (15) lower extreme be provided with check valve (13) and HEPA filter screen in the organism, check valve (13) and HEPA filter screen are in same height, and will the organism is inside to be divided into cavity and lower cavity, fan (12) slope sets up in the cavity down fan (12) below is provided with and just imitates filter screen (18), outdoor new wind gap sets up just imitate filter screen (18) lower extreme the rear side of organism.
4. The air epidemic prevention and purification system based on the one-way wall-mounted fresh air machine according to claim 2, characterized in that: the machine body side wall corresponding to the HEPA filter screen and the fan (12) is provided with an HEPA filter screen access hole (16) and a fan access hole (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010554309.0A CN111765553A (en) | 2020-06-17 | 2020-06-17 | Air epidemic prevention and purification system based on one-way wall-mounted fresh air machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010554309.0A CN111765553A (en) | 2020-06-17 | 2020-06-17 | Air epidemic prevention and purification system based on one-way wall-mounted fresh air machine |
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| CN111765553A true CN111765553A (en) | 2020-10-13 |
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| CN202010554309.0A Pending CN111765553A (en) | 2020-06-17 | 2020-06-17 | Air epidemic prevention and purification system based on one-way wall-mounted fresh air machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024124916A1 (en) * | 2022-12-12 | 2024-06-20 | 广东美的制冷设备有限公司 | Control method for heat pump water heater, heat pump water heater, and readable storage medium |
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