CN112923489A - Air total heat recovery fresh air system - Google Patents

Air total heat recovery fresh air system Download PDF

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Publication number
CN112923489A
CN112923489A CN202110422963.0A CN202110422963A CN112923489A CN 112923489 A CN112923489 A CN 112923489A CN 202110422963 A CN202110422963 A CN 202110422963A CN 112923489 A CN112923489 A CN 112923489A
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CN
China
Prior art keywords
air
wheel type
fresh air
exhaust
heat recovery
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Pending
Application number
CN202110422963.0A
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Chinese (zh)
Inventor
白莉
薛镒贤
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Jilin Jianzhu University
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Jilin Jianzhu University
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Priority to CN202110422963.0A priority Critical patent/CN112923489A/en
Publication of CN112923489A publication Critical patent/CN112923489A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • 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

Abstract

The invention discloses an air total heat recovery fresh air system which comprises an outdoor exhaust pipe, an outdoor air inlet pipe, a fresh air side wheel type filtering device, an exhaust side wheel type filtering device, a wheel type air total heat recovery heat exchanger, a rotating shaft, a wheel type shell, a fresh air pipe, an exhaust air pipe, an indoor air feeder, an indoor induced draft fan and a rotating shaft baffle plate. The wheel type air total heat recovery heat exchanger collects cold and heat and water vapor of indoor exhaust air and outdoor fresh air through the rotation and heat and moisture exchange coating. Because the indoor exhaust air and the outdoor fresh air alternately and reversely pass through the wheel type air total heat recovery heat exchanger, the heat and moisture exchange coating can collect and release the cold and heat quantity and the water vapor of the air through the temperature difference and the water vapor partial pressure difference of the indoor exhaust air and the outdoor fresh air, so that the heat and moisture exchange is carried out, the sensible heat can be recovered, the latent heat can be recovered, and the total heat recovery is realized.

Description

Air total heat recovery fresh air system
Technical Field
The invention relates to the field of air heat exchangers and fresh air systems, in particular to an air total heat recovery fresh air system.
Background
The main contaminants affecting the indoor air environment include: formaldehyde, ammonia, benzene series, indoor bacterial colony, carbon monoxide, carbon dioxide and PM2.5、PM10TVOC (total volatile organic compounds), SVOC (semi-volatile organic compounds), etc., where the greater the temperature at which the majority of the contaminants are volatilized, the faster they are volatilized, the higher the concentration. Meanwhile, the concentration level of pollutants has a close relationship with the finishing completion time, the environmental protection performance of materials used for finishing, the indoor environment temperature and humidity, the ventilation time and the like. Volatile organic concentrations decay with time, but even in older homes, there are still a large number of pollutants in the air. Good indoor air quality not only needs to meet harmful substance concentration indexes determined by national standards, but also needs to meet the requirement of thermal comfort of human bodies.
In northern severe cold and cold areas, the room temperature needs to be kept through heating in winter, most of indoor doors and windows are in a closed state, and favorable conditions are provided for volatilization of pollutants. In order to ensure the quality of indoor air, outdoor fresh air needs to be introduced to replace the indoor air. In consideration of energy conservation and human thermal comfort, direct windowing and ventilation can not be selected generally, and an indoor fresh air system is the most scientific selection at present. However, in any method, the air containing pollutants in the room is discharged to the outside, and simultaneously, the heat carried by the discharged air is discharged to the outside; meanwhile, the cold energy entering the room along with the fresh outdoor air can cause the temperature of the indoor air to be reduced, and the particle pollutants of the outdoor air can also enter the room together. The most effective method for solving the problems is to carry out heat recovery on indoor exhaust air to the maximum extent on the premise of purifying outdoor fresh air so as to achieve the purpose of energy saving.
If the temperature difference between indoor exhaust air and outdoor fresh air and the partial pressure difference of water vapor are utilized, the two gases carry out heat and moisture exchange while exchanging air, and part of heat carried by the indoor exhaust air is recovered, so that the energy consumption of heating equipment can be reduced, and comfortable room temperature can be maintained, namely the exhaust air heat recovery is also called as air heat recovery. In the existing air heat recovery equipment, cold and hot gases in most heat exchangers can not be in direct contact, but exchange heat through metal heat exchange plates, and only sensible heat recovery, not total heat recovery, of the gases is realized.
Total heat recovery includes sensible heat recovery and latent heat recovery, with the latent heat load typically accounting for 60% -80% of the total heat load. Therefore, the total heat recovery heat exchange efficiency is generally between sensible heat efficiency and latent heat efficiency, but is closer to the latent heat efficiency. Therefore, in order to improve the heat exchange efficiency of the equipment and achieve a good heat exchange effect, the total heat recovery of the gas is realized. However, in the existing total heat recovery equipment, the cold and hot gases can be in direct contact in the heat exchange process, secondary pollution can be generated, the air purification effect cannot be achieved, and the existing air heat recovery equipment cannot meet the requirements of monitoring and controlling indoor air cleanness in real time.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem of providing an air total heat recovery fresh air system.
The technical scheme for solving the technical problem is to provide an air total heat recovery fresh air system which is characterized by comprising an outdoor exhaust pipe, an outdoor air inlet pipe, a fresh air side wheel type filtering device, an exhaust side wheel type filtering device, a wheel type air total heat recovery heat exchanger, a rotating shaft, a wheel type shell, a fresh air pipe, an exhaust air pipe, an indoor air feeder, an indoor induced draft fan and a rotating shaft partition plate;
two ends of the rotating shaft are rotatably arranged in the axial direction of the wheel type shell; the axes of the fresh air side wheel type filtering device, the wheel type air total heat recovery heat exchanger and the exhaust side wheel type filtering device are sequentially fixed on the rotating shaft according to the fresh air flow direction, and the fresh air side wheel type filtering device, the wheel type air total heat recovery heat exchanger and the exhaust side wheel type filtering device rotate together; the side surfaces of the fresh air side wheel type filtering device, the wheel type air total heat recovery heat exchanger and the exhaust side wheel type filtering device are hermetically connected with the inner wall of the wheel type shell; two rotating shaft clapboards are respectively arranged between the fresh air side wheel type filtering device and the wheel type air total heat recovery heat exchanger and between the wheel type air total heat recovery heat exchanger and the exhaust side wheel type filtering device, one group of opposite sides are fixed on the inner wall of the wheel type shell, and the other group of opposite sides are respectively in sealing connection with the fresh air side wheel type filtering device, the wheel type air total heat recovery heat exchanger and the exhaust side wheel type filtering device, so that the interior of the wheel type shell is divided into a fresh air circulation area and an exhaust air circulation area;
one end of the fresh air pipe is hermetically connected with a fresh air circulation area in the wheel type shell, and the other end of the fresh air pipe is connected with an indoor air feeder; one end of the air exhaust pipe is hermetically connected with an air exhaust circulation area in the wheel type shell, and the other end of the air exhaust pipe is connected with an indoor induced draft fan; one end of the outdoor air inlet pipe is hermetically connected with the fresh air circulation area in the wheel type shell, and the other end of the outdoor air inlet pipe is communicated with the outside; one end of the outdoor exhaust pipe is hermetically connected with the exhaust circulation area in the wheel type shell, and the other end of the outdoor exhaust pipe is communicated with the outside.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention realizes sensible heat exchange and latent heat exchange of cold and hot gases, realizes real total heat recovery, recovers the heat of indoor exhaust air to the maximum extent, reduces the energy consumption of heating equipment, realizes effective filtration of outdoor fresh air, and simultaneously ensures that the whole system meets the requirement of indoor air cleanness on the premise of energy conservation through an automatic control device.
(2) The wheel type air total heat recovery heat exchanger collects cold and heat and water vapor of indoor exhaust air and outdoor fresh air through the rotation and heat and moisture exchange coating. Because the indoor exhaust air and the outdoor fresh air alternately and reversely pass through the wheel type air total heat recovery heat exchanger, the heat and moisture exchange coating can collect and release the cold and heat quantity and the water vapor of the air through the temperature difference and the water vapor partial pressure difference of the indoor exhaust air and the outdoor fresh air, so that the heat and moisture exchange is carried out, the sensible heat can be recovered, the latent heat can be recovered, and the total heat recovery is realized.
(3) The existence of the heat and moisture exchange coating enables the wheel type air total heat recovery heat exchanger to keep higher heat exchange efficiency, and the efficiency is between 85% and 90%. The bilateral locking connecting piece can effectively shorten the plate spacing while locking the rectangular heat conducting plate, improve the full heat exchange efficiency of gas-gas, simultaneously reduce the volume of the heat exchanger, recover energy while updating indoor air, and maintain indoor comfortable room temperature while effectively reducing the energy consumption of heating equipment.
(4) The heat and moisture transfer is carried out by taking the heat and moisture exchange coating as a medium, and no direct contact exists, so that secondary pollution is avoided.
(5) Fresh air side wheel formula filter equipment and side wheel formula filter equipment of airing exhaust can carry out effective adsorption to gas and filter, and the particulate matter in the adsorption of air guarantees the air quality, reaches the air-purifying purpose. Meanwhile, the self-cleaning of the adsorption and filtration fibers in the adsorption and filtration fibers is realized through rotating the adsorption and filtration fibers through each functional sector, the adsorption and filtration fibers are recycled, the adsorption and filtration fibers do not need to be replaced and disassembled for cleaning at regular intervals, only clean water needs to be replaced, and the maintenance difficulty is reduced. Meanwhile, the trace clear water for cleaning the fibers is taken away by the outdoor fresh air or the indoor exhaust air flowing through, the outdoor fresh air and the indoor exhaust air are fully utilized, the operation is simple, the operation cost is low, and the resources are recycled.
(6) The two wheel type filtering devices are coaxially connected with the heat exchanger, the heat exchanger rotates, the wheel type filtering devices do not need to be additionally provided with a transmission device by utilizing the coaxial linkage principle, the speed of the heat exchanger is controlled, the structure is simple and easy to control, and the cost is saved.
(7) The system is additionally provided with an automatic control system for monitoring the indoor air environment in real time and is provided with TVOC and CO2、PM10、PM2.5The four pollutant sensors and the human body sensor control the operation of the whole system through the single chip microcomputer, and the concentration of indoor pollutants is comprehensively controlled. The real-time rotating speed of the heat exchanger is controlled through the automatic variable-frequency speed regulating device according to the concentration of the real-time pollutants, and the energy is saved through variable-frequency regulation.
(8) The user can remotely open and control the operation of the whole system through the control terminal, purifies the indoor air before returning home, and adjusts the concentration condition of indoor pollutants, so that the quality of the indoor air reaches the standard when arriving home. Therefore, the indoor air quality can be guaranteed, the service time of the system can be shortened, the energy consumption is reduced, and the intelligent and convenient air conditioner is intelligent and convenient.
Drawings
FIG. 1 is a schematic diagram of the overall system of the present invention;
FIG. 2 is a functional schematic of the system of the present invention;
figure 3 is a schematic view of the internal structure of the wheel housing of the present invention;
FIG. 4 is a schematic front view of the fresh air side wheel type filter device of the present invention;
FIG. 5 is a schematic front view of the vented side wheel filter apparatus of the present invention;
FIG. 6 is a schematic front view of the wheel air total heat recovery heat exchanger of the present invention;
FIG. 7 is a schematic perspective view of the wheeled air total heat recovery heat exchanger of the present invention;
FIG. 8 is a block diagram schematically showing the construction of an automatic control apparatus of the present invention;
fig. 9 is a flowchart of the operation of the automatic control apparatus of the present invention.
In the figure: 1. an outdoor exhaust duct; 2. an outdoor air inlet pipe; 3. a fresh air side wheel type filtering device; 4. a discharge side wheel type filtering device; 5. a wheel type air total heat recovery heat exchanger; 6. a rotating shaft; 8. a wheel-type housing; 9. a fresh air duct; 10. an air exhaust duct; 11. an indoor blower; 12. an indoor induced draft fan; 13. a rotating shaft clapboard; 14. cleaning a sector baffle; 15. a radiator or an air conditioning unit; 16. building exterior walls; 17. indoor; 18. a drive belt; 19. a transmission device;
301. a fresh air side filter sector; 302. cleaning the sector on the fresh air side; 303. a fresh air side transition sector;
401. a discharge side filter sector; 402. cleaning the sector at the exhaust side; 403. a discharge side transition sector;
501. a rectangular heat conducting plate; 502. a bilateral locking connection;
701. a display; 702. an automatic frequency conversion speed regulation device; 703. a Wi-Fi module; 704. a single chip microcomputer; 705. a human body sensor; 706. a TVOC sensor; 707. CO 22A sensor; 708. PM (particulate matter)10A sensor; 709. PM (particulate matter)2.5A sensor.
Detailed Description
Specific examples of the present invention are given below. The specific examples are only intended to illustrate the invention in further detail and do not limit the scope of protection of the claims of the present application.
The invention provides an air total heat recovery fresh air system (system for short), which is characterized by comprising an outdoor exhaust pipe 1, an outdoor air inlet pipe 2, a fresh air side wheel type filtering device 3, an exhaust side wheel type filtering device 4, a wheel type air total heat recovery heat exchanger 5, a rotating shaft 6, a wheel type shell 8, a fresh air pipe 9, an exhaust air pipe 10, an indoor air feeder 11, an indoor induced draft fan 12 and a rotating shaft baffle 13;
two ends of the rotating shaft 6 are rotatably arranged in the axial direction of the wheel type shell 8; the axes of the fresh air side wheel type filtering device 3, the wheel type air total heat recovery heat exchanger 5 and the exhaust side wheel type filtering device 4 are fixed on the rotating shaft 6 in sequence according to the fresh air flow direction, and the four rotate together; the side surfaces of the fresh air side wheel type filtering device 3, the wheel type air total heat recovery heat exchanger 5 and the exhaust side wheel type filtering device 4 are hermetically connected with the inner wall of the wheel type shell 8; two rotating shaft partition plates 13 are respectively arranged between the fresh air side wheel type filtering device 3 and the wheel type air total heat recovery heat exchanger 5 and between the wheel type air total heat recovery heat exchanger 5 and the exhaust side wheel type filtering device 4, one group of opposite sides are fixed on the inner wall of the wheel type shell 8, the other group of opposite sides are respectively in sealing connection with the fresh air side wheel type filtering device 3, the wheel type air total heat recovery heat exchanger 5 and the exhaust side wheel type filtering device 4, and then the interior of the wheel type shell 8 is divided into two ventilation areas, namely a fresh air circulation area and an exhaust air circulation area, which are respectively used for the circulation of fresh air and exhaust air;
one end of the fresh air pipe 9 is hermetically connected with a fresh air circulation area in the wheel type shell 8, and the other end is connected with an indoor blower 11; one end of the air exhaust duct 10 is hermetically connected with an air exhaust circulation area in the wheel type shell 8, and the other end is connected with an indoor induced draft fan 12; the indoor blower 11 and the indoor induced draft fan 12 are both arranged indoors; one end of the outdoor air inlet pipe 2 is hermetically connected with a fresh air circulation area in the wheel type shell 8, and the other end of the outdoor air inlet pipe is communicated with the outside; one end of the outdoor exhaust pipe 1 is hermetically connected with an exhaust circulation area in the wheel type shell 8, and the other end is communicated with the outside.
Preferably, two rotating shaft partition plates 13 are nested outside the rotating shaft 6 and in clearance fit with the rotating shaft 6, so that the interior of the wheel type shell 8 is divided into two equal-size ventilation areas which are respectively used for ventilation of fresh air and exhaust air.
Preferably, the fresh air side wheel type filtering device 3 and the exhaust air side wheel type filtering device 4 are uniformly filled with adsorption filtering fibers; the adsorption and filtration fiber has the advantages of high specific surface area, small pore diameter, easy obtainment, low cost and the like, and has good adsorption and filtration effects on air, especially on PM10And PM2.5In addition, the composite material has excellent adsorption, filtration and purification effects. Preferably, topological structures (preferably honeycomb structures) are arranged inside the fresh air side wheel type filtering device 3 and the exhaust side wheel type filtering device 4, and the adsorption filtering fibers are uniformly filled inside and on the surface of the topological structures.
Preferably, the system further comprises a wash sector baffle 14; the fresh air side wheel type filtering device 3 and the exhaust side wheel type filtering device 4 are divided into three functional sectors by the rotating shaft partition plate 13 and the cleaning sector baffle plate 14 respectively; the three functional sectors of the fresh air side wheel type filtering device 3 are a fresh air side filtering sector 301, a fresh air side cleaning sector 302 and a fresh air side transition sector 303 respectively; the fresh air side filtering sector 301 corresponds to a fresh air circulation area, and the fresh air side cleaning sector 302 and the fresh air side transition sector 303 correspond to an exhaust circulation area; the three functional sectors of the exhaust-side wheel filter device 4 are an exhaust-side filter sector 401, an exhaust-side cleaning sector 402 and an exhaust-side transition sector 403, respectively; the exhaust side filter sector 401 corresponds to an exhaust circulation area, and the exhaust side cleaning sector 402 and the exhaust side transition sector 403 correspond to a fresh air circulation area; the outer sides of the fresh air side cleaning sector 302 and the exhaust air side cleaning sector 402 are both provided with cleaning sector baffles 14, so that the air after heat exchange from the wheel type air total heat recovery heat exchanger 5 can only flow out of the transition sector.
Preferably, a water mist flushing device is arranged in the cleaning sector baffle 14 and is used for cleaning the adsorption filter fibers transferred from the fresh air side filter sector 301 to the fresh air side cleaning sector 302 and the adsorption filter fibers transferred from the exhaust side filter sector 401 to the exhaust side cleaning sector 402. The water mist flushing device is connected with a circulating water pump, and when the fresh air side wheel type filtering device 3 and the exhaust side wheel type filtering device 4 rotate for 20 times, clean water is automatically replaced.
Preferably, the rotation directions of the fresh air side wheel type filter device 3 and the exhaust air side wheel type filter device 4 are as follows: the adsorption filtration fiber firstly adsorbs, filters and purifies outdoor fresh air or indoor exhaust air which flows into the wheel type air total heat recovery heat exchanger 5 for heat exchange in the filtration sector, then rotates to the cleaning sector for water mist cleaning, then rotates to the transition sector for taking away trace clear water remained on the cleaned adsorption filtration fiber through drying and drying of the outdoor fresh air or the indoor exhaust air after heat exchange, and then returns to the filtration sector to complete circulation.
Preferably, the wheel type air total heat recovery heat exchanger 5 is a spliced wheel type heat exchanger for gas-gas heat exchange, and is composed of a plurality of cylinders with different radiuses; the central axes of all the cylinders are collinear, and the cylinders are fixed by a double-side locking connecting piece 502; the cylinder is surrounded by a rectangular heat conducting plate 501 with holes for the insertion of a double-sided locking connection 502, on which a heat and moisture exchange coating composed of a moisture absorbent and a heat absorbent is coated. The rectangular heat conducting plate 501 is a rectangular oblique corrugated aluminum foil plate, which can increase the contact area between air and the heat and moisture exchange coating and enhance the heat and moisture exchange effect. The double-sided locking connection 502 employs a thin bar with a double-sided locking mechanism.
Preferably, the system further comprises an automatic control device and a control terminal; the automatic control device comprises a display 701, an automatic frequency conversion speed regulation device 702, a Wi-Fi module 703, a singlechip 704, a human body sensor 705, a TVOC sensor 706, and CO2Sensor 707, PM10Sensor 708 and PM2.5A sensor 709;
the single chip microcomputer 704 is respectively connected with the display 701, the automatic frequency conversion speed regulation device 702, the Wi-Fi module 703, the human body sensor 705, the TVOC sensor 706, the CO2Sensor 707, PM10Sensor 708, PM2.5Sensor 709 is in communication connection; the singlechip 704 is in communication connection with the control terminal through the Wi-Fi module 703; automatic frequency conversion speed regulation device 702The rotating speed of the wheel type air total heat recovery heat exchanger 5 is controlled, and the rotating speed of the wheel type air total heat recovery heat exchanger 5 is in direct proportion to the concentration of indoor pollutants; the human body sensor 705 is arranged indoors and used for sensing whether a person is in the room; TVOC sensor 706, CO2Sensor 707, PM10Sensor 708 and PM2.5The sensors 709 are all arranged indoors and used for detecting the real-time concentration of four indoor pollutants; the display 701 is used for displaying the TVOC sensor 706, CO2Sensor 707, PM10Sensor 708 and PM2.5The real-time concentration value of the indoor pollutants detected by the sensor 709. The conditions including TVOC and CO are set by programming the singlechip 7042、PM10、PM2.5The upper limit concentration and the lower limit concentration of the four indoor pollutants and other logic control.
Preferably, the rotary power of the wheeled air total heat recovery heat exchanger 5 is provided by a transmission device 19 through a transmission belt 18; the power of the transmission device 19 is controlled by the automatic frequency conversion speed regulating device 702, so as to control the rotating speed of the wheel type air total heat recovery heat exchanger 5.
Preferably, the outdoor mouths of the outdoor exhaust duct 1 and the outdoor air inlet duct 2 are both provided with heat insulation materials, so that the ports are not easy to freeze or dewfall.
The working principle and the working process of the invention are as follows:
the working principle is as follows: when the system works, an indoor induced draft fan 12, an indoor blower 11 and a wheel type air total heat recovery heat exchanger 5 are started, and simultaneously, a fresh air side wheel type filtering device 3 and an exhaust air side wheel type filtering device 4 are driven to synchronously rotate through a rotating shaft 6; outdoor fresh air and indoor exhaust air respectively enter the system from an outdoor air inlet pipe 2 and an exhaust air pipe 10, then respectively pass through a fresh air side filtering sector 301 and an exhaust air side filtering sector 401, are purified by adsorption filtering fibers in the filtering sectors, and then enter a wheel type air total heat recovery heat exchanger 5 for sensible heat exchange and latent heat exchange (namely heat and humidity exchange); then outdoor fresh air and indoor exhaust air respectively pass through the exhaust side transition sector 403 and the fresh air side transition sector 303, the outdoor fresh air is sent into the room from the fresh air duct 9 and the indoor blower 11, and the indoor exhaust air is exhausted to the outdoor from the outdoor exhaust duct 1, so that air purification is completed.
The working process is an operation method of an air total heat recovery fresh air system, and is characterized by comprising the following steps:
step 1, a human body sensor 705 detects whether a person is in a room in real time, and a single chip microcomputer 704 receives a signal of the human body sensor 705 and judges whether a person is in the room; meanwhile, the singlechip 704 receives the TVOC sensor 706 and CO2Sensor 707, PM10Sensor 708 and PM2.5The real-time concentration values of the four indoor pollutants detected by the sensor 709 are uploaded to the internet through the Wi-Fi module 703 and the wireless network, and a user can monitor indoor air pollution conditions in real time through the app in the control terminal and remotely send a system starting signal to the single chip microcomputer 704 through the app in the control terminal;
under the first working condition, when a person is present indoors, the single chip microcomputer 704 compares and judges the received real-time concentration values of the four indoor pollutants with the set upper concentration limit values and lower concentration limit values of the four indoor pollutants (the lower concentration limit value is 50% of the upper concentration limit value):
when the real-time concentration of any indoor pollutant is not less than the upper concentration limit (namely the concentration of TVOC is more than or equal to 0.42 mg/m)3Or CO2The concentration of (B) is more than or equal to 700ppm or PM10The concentration of the water is more than or equal to 0.105mg/m3Or PM2.5The concentration of the active carbon is more than or equal to 0.0525mg/m3) When the system works, the single chip microcomputer 704 starts an indoor induced draft fan 12 and an indoor blower 11 and sends signals to the automatic frequency conversion and speed regulation device 702, the automatic frequency conversion and speed regulation device 702 starts the wheeled air total heat recovery heat exchanger 5 by controlling the transmission device 19, and simultaneously drives the fresh air side wheeled filtering device 3 and the exhaust side wheeled filtering device 4 which are coaxially connected to start to rotate, so that the system works to perform total heat exchange and air purification;
under a second working condition, when no person is in the room, the single chip microcomputer 704 judges whether a system starting signal sent through the app in the control terminal exists or not, and if no system starting signal exists, the system is not started; if a system starting signal is received, the single chip microcomputer 704 sends an instruction for confirming whether to start the system to the control terminal through the Wi-Fi module 703 and the wireless network, so that the error sending of a user is prevented; when receiving the confirmation instruction, the single chip microcomputer 704 directly starts the system to work, or the working condition is the same as that of a person in a room, and whether the system is started to work is determined through judgment; if the confirmation instruction is not received, the working condition is the same as that of the indoor person, and whether the system is started to work is determined through judgment;
step 2, along with the operation of the system, the concentration of the indoor pollutants is gradually reduced, the automatic variable frequency speed regulating device 702 regulates the power of the transmission device 19 according to the real-time concentration values of the four indoor pollutants received by the single chip microcomputer, and further regulates the rotating speed of the wheel type air total heat recovery heat exchanger 5 so as to correspond to the current concentration of the indoor pollutants;
step 3, the system continues to operate, and when the real-time concentrations of the four indoor pollutants received by the single chip microcomputer 704 are not more than the respective lower concentration limits (namely the concentration of the TVOC is less than or equal to 0.21 mg/m)3And CO2Concentration of (b) is less than or equal to 350ppm and PM10The concentration is less than or equal to
0.0525mg/m3And PM2.5The concentration of the (B) is less than or equal to 0.02625mg/m3) When the air conditioner is used, the single chip microcomputer 704 closes the indoor draught fan 12 and the indoor air blower 11 and sends signals to the automatic variable frequency speed regulation device 702, the automatic variable frequency speed regulation device 702 closes the wheel type air total heat recovery heat exchanger 5 by controlling the transmission device 19, the whole system is closed, and the indoor air quality reaches the indoor air standard of green buildings.
Preferably, in step 4, when the real-time concentration of any indoor pollutant is not less than the upper concentration limit, the system starts to work again.
Among four pollutants of indoor air, TVOC is mainly generated by volatilization of indoor carpets, furniture and the like; CO 22Is mainly influenced by the density of indoor personnel; PM (particulate matter)10And PM2.5Mainly caused by the infiltration of particles in the outdoor air into the room through the gaps of the doors and windows. TVOC and CO2、PM10And PM2.5The four pollutants respectively represent indoor volatile pollution intensity, indoor personnel density and outdoor infiltration pollution intensity. Therefore, when the concentrations of the four pollutants are not over standard, the concentrations of the pollutants are not over standard and the indoor air is cleaner. According to the regulation of GB/T18883-2002 'indoor air quality Standard', T in indoor airThe standard value of the VOC mass concentration is 0.6mg/m3(8 hour average); CO 22The volume concentration of (c) is defined as 0.1% (daily average). According to GB3095-2012 'environmental air quality Standard' for indoor PM in civil buildings10The standard value of mass concentration is 0.15mg/m3(daily average); PM (particulate matter)2.5The concentration is limited to 0.075mg/m3(daily average). However, in the improvement of building performance of GBT50378-2014 green building evaluation standard, the limit concentration of the green building is lower than 70% of the existing required concentration. Therefore, the concentration limit of the system is applied to the concentration standard of the green building limit.
Nothing in this specification is said to apply to the prior art.

Claims (10)

1. An air total heat recovery fresh air system is characterized by comprising an outdoor exhaust pipe, an outdoor air inlet pipe, a fresh air side wheel type filtering device, an exhaust side wheel type filtering device, a wheel type air total heat recovery heat exchanger, a rotating shaft, a wheel type shell, a fresh air pipe, an exhaust air pipe, an indoor air feeder, an indoor induced draft fan and a rotating shaft baffle plate;
two ends of the rotating shaft are rotatably arranged in the axial direction of the wheel type shell; the axes of the fresh air side wheel type filtering device, the wheel type air total heat recovery heat exchanger and the exhaust side wheel type filtering device are sequentially fixed on the rotating shaft according to the fresh air flow direction, and the fresh air side wheel type filtering device, the wheel type air total heat recovery heat exchanger and the exhaust side wheel type filtering device rotate together; the side surfaces of the fresh air side wheel type filtering device, the wheel type air total heat recovery heat exchanger and the exhaust side wheel type filtering device are hermetically connected with the inner wall of the wheel type shell; two rotating shaft clapboards are respectively arranged between the fresh air side wheel type filtering device and the wheel type air total heat recovery heat exchanger and between the wheel type air total heat recovery heat exchanger and the exhaust side wheel type filtering device, one group of opposite sides are fixed on the inner wall of the wheel type shell, and the other group of opposite sides are respectively in sealing connection with the fresh air side wheel type filtering device, the wheel type air total heat recovery heat exchanger and the exhaust side wheel type filtering device, so that the interior of the wheel type shell is divided into a fresh air circulation area and an exhaust air circulation area;
one end of the fresh air pipe is hermetically connected with a fresh air circulation area in the wheel type shell, and the other end of the fresh air pipe is connected with an indoor air feeder; one end of the air exhaust pipe is hermetically connected with an air exhaust circulation area in the wheel type shell, and the other end of the air exhaust pipe is connected with an indoor induced draft fan; one end of the outdoor air inlet pipe is hermetically connected with the fresh air circulation area in the wheel type shell, and the other end of the outdoor air inlet pipe is communicated with the outside; one end of the outdoor exhaust pipe is hermetically connected with the exhaust circulation area in the wheel type shell, and the other end of the outdoor exhaust pipe is communicated with the outside.
2. The air total heat recovery fresh air system according to claim 1, wherein two rotating shaft separators are nested outside the rotating shaft and are in clearance fit with the rotating shaft, so as to divide the interior of the wheel type shell into two equal ventilation areas for ventilation of fresh air and exhaust air respectively.
3. The air total heat recovery fresh air system according to claim 1, wherein the fresh air side wheel type filter device and the exhaust side wheel type filter device are uniformly filled with adsorption filter fibers.
4. The air total heat recovery fresh air system according to claim 3, wherein topological structures are arranged inside the fresh air side wheel type filtering device and the exhaust side wheel type filtering device, and the adsorption filtering fibers are uniformly filled inside and on the surface of the topological structures.
5. The air total heat recovery fresh air system according to claim 1, further comprising a cleaning sector baffle; the fresh air side wheel type filtering device and the exhaust side wheel type filtering device are divided into three functional sectors by the rotating shaft partition plate and the cleaning sector baffle plate respectively; the three functional sectors of the fresh air side wheel type filtering device are a fresh air side filtering sector, a fresh air side cleaning sector and a fresh air side transition sector respectively; the fresh air side filtering sector corresponds to a fresh air circulation area, and the fresh air side cleaning sector and the fresh air side transition sector correspond to an exhaust circulation area; the three functional sectors of the exhaust side wheel type filter device are respectively an exhaust side filter sector, an exhaust side cleaning sector and an exhaust side transition sector; the exhaust side filtering sector corresponds to an exhaust circulation area, and the exhaust side cleaning sector and the exhaust side transition sector correspond to a fresh air circulation area; the outer sides of the fresh air side cleaning sector and the exhaust air side cleaning sector are respectively provided with a cleaning sector baffle, so that air after heat exchange of the wheel type air total heat recovery heat exchanger can only flow out of the transition sector.
6. The air total heat recovery fresh air system according to claim 5, wherein a water mist flushing device is arranged in the cleaning sector baffle for cleaning the adsorption filter fibers transferred from the fresh air side filter sector to the fresh air side cleaning sector and the adsorption filter fibers transferred from the exhaust side filter sector to the exhaust side cleaning sector; the water mist flushing device is connected with the circulating water pump and used for replacing clean water.
7. The air total heat recovery fresh air system as claimed in claim 1, wherein the wheeled air total heat recovery heat exchanger is composed of a plurality of cylinders with different radiuses; the central axes of all the cylinders are collinear, and the cylinders are fixed by the bilateral locking connecting piece; the cylinder is surrounded by a rectangular heat conducting plate coated with a heat and moisture exchange coating, and the hole is used for inserting the double-side locking connecting piece.
8. The air total heat recovery fresh air system according to claim 1, further comprising an automatic control device and a control terminal; the automatic control device comprises a display, an automatic frequency conversion speed regulation device, a Wi-Fi module, a singlechip, a human body sensor, a TVOC sensor and CO2Sensor and PM10Sensor and PM2.5A sensor;
the single chip microcomputer is respectively connected with the display, the automatic variable frequency speed regulation device, the Wi-Fi module, the human body sensor, the TVOC sensor and the CO2Sensor and PM10Sensor and PM2.5The sensors are in communication connection; the singlechip is in communication connection with the control terminal through the Wi-Fi module; the automatic frequency conversion speed regulating device is used for controlling the rotating speed of the wheel type air total heat recovery heat exchanger; the human body sensor is arranged indoors and used for sensing whether a person is in the room; TVOC sensor, CO2Sensor and PM10Sensor and PM2.5The sensors are arranged indoors and used for detecting the real-time concentration of four indoor pollutants; the display is used for displaying the TVOC sensor and the CO2Sensor and PM10Sensor and PM2.5A real-time concentration value of the indoor pollutant detected by the sensor.
9. The air total heat recovery fresh air system as claimed in claim 8, wherein the rotary power of the wheel type air total heat recovery heat exchanger is provided by a transmission device through a transmission belt; the power of the transmission device is controlled by the automatic frequency conversion speed regulating device, and then the rotating speed of the wheel type air total heat recovery heat exchanger is controlled.
10. The fresh air system for total heat recovery of air as claimed in claim 1, wherein the outdoor openings of the outdoor exhaust duct and the outdoor air inlet duct are provided with thermal insulation materials.
CN202110422963.0A 2021-04-20 2021-04-20 Air total heat recovery fresh air system Pending CN112923489A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110422963.0A CN112923489A (en) 2021-04-20 2021-04-20 Air total heat recovery fresh air system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110422963.0A CN112923489A (en) 2021-04-20 2021-04-20 Air total heat recovery fresh air system

Publications (1)

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CN112923489A true CN112923489A (en) 2021-06-08

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Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113446693A (en) * 2021-07-26 2021-09-28 广东爱得威建设(集团)股份有限公司 Wisdom building new trend system
CN113834108A (en) * 2021-11-05 2021-12-24 吉林建筑大学 Device with heat recovery and high-efficient purification

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113446693A (en) * 2021-07-26 2021-09-28 广东爱得威建设(集团)股份有限公司 Wisdom building new trend system
CN113834108A (en) * 2021-11-05 2021-12-24 吉林建筑大学 Device with heat recovery and high-efficient purification
CN113834108B (en) * 2021-11-05 2024-02-20 吉林建筑大学 Device with heat recovery and high-efficient purification

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