CN108168055A - Runner heat reclamation type porous ceramics compound type steamed feels cold but Fresh air handling units - Google Patents

Runner heat reclamation type porous ceramics compound type steamed feels cold but Fresh air handling units Download PDF

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Publication number
CN108168055A
CN108168055A CN201711407621.1A CN201711407621A CN108168055A CN 108168055 A CN108168055 A CN 108168055A CN 201711407621 A CN201711407621 A CN 201711407621A CN 108168055 A CN108168055 A CN 108168055A
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CN
China
Prior art keywords
fresh air
runner
handling units
type
channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711407621.1A
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Chinese (zh)
Inventor
黄翔
贾曼
严锦程
申永波
贾晨昱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Polytechnic University
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Xian Polytechnic University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian Polytechnic University filed Critical Xian Polytechnic University
Priority to CN201711407621.1A priority Critical patent/CN108168055A/en
Publication of CN108168055A publication Critical patent/CN108168055A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006Use 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/147Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with both heat and humidity transfer between supplied and exhausted air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0035Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56Heat recovery units

Abstract

Runner heat reclamation type porous ceramics compound type steamed disclosed by the invention feels cold but Fresh air handling units, including housing, two layers of channel is arranged in parallel in housing from top to bottom, the indirect evaporation cooler through two layers of channel is additionally provided in housing, indirect evaporation cooler is obliquely installed, and two layers of channel is made to form fresh air channel and return air channel in reversed cross flow using indirect evaporation cooler as node;Fresh air channel includes the fresh wind port and air outlet that housing corresponds to both sides, and fresh wind port is interior to be disposed with filter device, heat regenerator, indirect evaporation cooler, direct evaporating-cooling unit, water blocking filler a and pressure fan according to air-flow direction;Return air channel includes the return air inlet and exhaust outlet that housing corresponds to both sides, and return air inlet is interior to be disposed with high-pressure fog unit, indirect evaporation cooler, water blocking filler b, heat regenerator and exhaust blower according to air-flow direction.Unit of the present invention not only improves fresh air quality and the operational efficiency of unit, but also compact-sized, and space is small.

Description

Runner heat reclamation type porous ceramics compound type steamed feels cold but Fresh air handling units
Technical field
The invention belongs to air conditioner technical fields, and in particular to a kind of runner heat reclamation type porous ceramics combined type evaporation Cool down Fresh air handling units.
Background technology
With the continuous improvement being constantly progressive and people require life and material conditions of society, people are to Interior Space Gas quality has higher requirement, stronger for the consciousness of indoor all-fresh air, and the energy-saving and emission-reduction that country proposes in addition are advocated View, based on this social status quo, people need a kind of multiple functional, energy-saving and environment-friendly novel fresh air unit.
Evaporative Cooling Air Conditioning technology is cooled down, while have filtering, only using water as refrigerant by water evaporation heat absorption The function of changing and humidify.Traditional Fresh air handling units with evaporation cooling technique are combined, make it on the basis of original to fresh air Quality and energy-saving effect are further promoted, and give full play to the two advantage.
Invention content
It feels cold but Fresh air handling units, solves the object of the present invention is to provide a kind of runner heat reclamation type porous ceramics compound type steamed The problem of existing Fresh air handling units waste of energy.
The technical solution adopted in the present invention is, runner heat reclamation type porous ceramics compound type steamed feels cold but Fresh air handling units, Including housing, two layers of channel is arranged in parallel in housing from top to bottom, the heat through two layers of channel is also disposed in housing Recover and indirect evaporation cooler, indirect evaporation cooler are obliquely installed, and make two layers of channel using indirect evaporation cooler as section Point forms the fresh air channel and return air channel in reversed cross flow;
Fresh air channel includes housing and corresponds to the fresh wind port and air outlet of both sides, fresh wind port it is interior according to air-flow direction successively It is provided with filter device, heat regenerator, indirect evaporation cooler, direct evaporating-cooling unit, water blocking filler a and pressure fan;
Return air channel includes housing and corresponds to the return air inlet and exhaust outlet of both sides, return air inlet it is interior according to air-flow direction successively It is provided with high-pressure fog unit, indirect evaporation cooler, water blocking filler b, heat regenerator and exhaust blower.
It is of the invention to be further characterized in that,
Filter device is specially primary filter.
Heat regenerator is rotary-type heat regenerator, and including babinet, runner and transmission device, runner and biography are provided in babinet Dynamic device is connected by driving belt;
Runner has been disposed radially partition board, and runner is bisected into partition board rotary-type heat regenerator fresh air side and rotary-type heat is returned Receive device return side.
Sealing strip is additionally provided on runner.
Direct evaporating-cooling unit includes porous ceramic filler, and spray unit is provided at the top of porous ceramic filler, porous Ceramic packing bottom is provided with cyclic water tank b, and spray unit is connected with cyclic water tank b by water pipe b.
Water circulating pump b is provided on water pipe b.
High-pressure fog unit includes several high pressure nozzles sprayed towards heat regenerator, and high pressure nozzle is connected by water pipe a The cyclic water tank a of bottom.
Water circulating pump a is provided on water pipe a.
Indirect evaporation cooler is porous ceramic plate fin type indirect evaporative cooler.
The feel cold advantageous effect of but Fresh air handling units of compound type steamed of the present invention is:
A) the compound type steamed of the present invention but Fresh air handling units that feel cold make full use of indoor return air, improve fresh air quality and the fortune of unit Line efficiency not only reduces operation energy consumption, and compact-sized, and space is small;
B) compound type steamed of the present invention porous ceramic plate fin type indirect evaporative cooler summer in but Fresh air handling units of feeling cold uses Indoor return air Sprayer Circulation water, winter use indoor return air not Sprayer Circulation water, can preferably realize cold and heat recovery, energy saving height Effect;
C) compound type steamed of the present invention feels cold in but Fresh air handling units has endurance using porous ceramic film material, porous ceramics The features such as height, thermal conductivity factor is high, porosity, water proofing property and durability, hot and humid area is abundant, and heat transfer effect is stablized;
D) compound type steamed of the present invention feels cold but Fresh air handling units, and again plus direct evaporative cooler is put after fresh air filter device, So as to make the unit that there is dry and wet double-filtration effect, the unit is made to integrate humidification, cooling and purification.
Description of the drawings
Fig. 1 is that compound type steamed of the present invention feels cold the structure diagrams of but Fresh air handling units;
Fig. 2 is that compound type steamed of the present invention feels cold the structure diagram of heat regenerator in but Fresh air handling units;
Fig. 3 is that compound type steamed of the present invention feels cold the stereogram of indirect evaporation cooler in but Fresh air handling units.
In figure, 1. fresh wind ports, 2. filter devices, 3. heat regenerators, 4. air-valve a, 5. indirect evaporation coolers, 6. high pressure sprays Mouth, 7. water pipe a, 8. cyclic water tank a, 9. water circulating pump a, 10. return air inlets, 11. air outlets, 12. pressure fan, 13. water blocking fillers A, 14. water pipe b, 15. water circulating pump b, 16. cyclic water tank b, 17. porous ceramic fillers, 18. spray units, 19. water blocking fillers B, 20. air-valve b, 21. exhaust blowers, 22. exhaust outlets, 23. fresh air channels, 24. return air channels, 25. rotary-type heat regenerator return air Side, 26. partition boards, 27. driving belts, 28. transmission devices, 29. sealing strips, 30. rotary-type heat regenerator fresh air sides, 31. runners.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
Runner heat reclamation type porous ceramics compound type steamed of the present invention feels cold but Fresh air handling units, as shown in Figure 1, including housing, Two layers of channel is arranged in parallel in housing from top to bottom, 3 He of heat regenerator through two layers of channel is also disposed in housing Indirect evaporation cooler 5, indirect evaporation cooler 5 are obliquely installed, and two layers of channel is made to be formed with indirect evaporation cooler 5 for node In the fresh air channel 23 of reversed cross flow and return air channel 24;
Fresh air channel 23 corresponds to the fresh wind port 1 of both sides and air outlet 11 including housing, and fresh wind port 1 is interior according to air flowing side To being disposed with filter device 2, heat regenerator 3, indirect evaporation cooler 5, direct evaporating-cooling unit, water blocking filler a13 With pressure fan 12;
Return air channel 24 corresponds to the return air inlet 10 of both sides and exhaust outlet 22 including housing, is flowed in return air inlet 10 according to air Direction is disposed with high-pressure fog unit, indirect evaporation cooler 5, water blocking filler b19, heat regenerator 3 and exhaust blower 21;
Wherein Yi Shang fresh wind port 1 and exhaust outlet 22 are located at housing side and are arranged in order from top to bottom;It return air inlet 10 and send Air port 11 is located at housing opposite side and is arranged in order from top to bottom.
Filter device 2 is specially primary filter, removes the impurity in fresh air.
As shown in Fig. 2, heat regenerator 3 is rotary-type heat regenerator, including babinet, runner 31 and transmission are provided in babinet Device 28, runner 31 and transmission device 28 are connected by driving belt 27, and wherein transmission device 28 is specially engine etc., is passed through Belt 27 drives runner 31 to move;
Runner 31 has been disposed radially partition board 26, and runner 31 is bisected into rotary-type 30 He of heat regenerator fresh air side by partition board 26 Rotary-type heat regenerator return side 25;Sealing strip 29 is additionally provided on runner 31;
3 vertical direction both ends of heat regenerator are also respectively provided with air-valve a4 and air-valve b20, respectively to heat regenerator fresh air side 30 and rotary-type heat regenerator return side 25 regulated and controled.
Direct evaporating-cooling unit includes porous ceramic filler 17, and 17 top of porous ceramic filler is provided with spray unit 18,17 bottom of porous ceramic filler is provided with cyclic water tank b16, and spray unit 18 and cyclic water tank b16 are connected by water pipe b14 It connects;Spray unit 18 includes water distributor and is uniformly distributed the nozzle towards porous ceramic filler 17 thereon;It is set on water pipe b14 There is water circulating pump b15, water circulating pump b15 mainly provide power.
High-pressure fog unit includes several high pressure nozzles 6 sprayed towards heat regenerator 3, and high pressure nozzle 6 passes through water pipe a7 Connect the cyclic water tank a8 of bottom;Water circulating pump a9 is provided on water pipe a7, water circulating pump a9 mainly provide power.
As shown in figure 3, indirect evaporation cooler 5 is porous ceramic plate fin type indirect evaporative cooler.
The course of work of the evaporation cooling Fresh air handling units of the present invention:
(1) course of work of wind system
Summer fresh air enters housing, filtered 2 filtering and impurity removing of device, then by rotary-type heat regenerator by fresh wind port 1 The wet cooling such as fresh air side 30, the fresh air runner for entering back into porous ceramic plate fin type indirect evaporative cooler 5 are cooled down, are most passed through afterwards Porous ceramic filler 17 is crossed with after the cooling of shower water constant enthalpy, interior is sent by air outlet 11 under the action of pressure fan 12;
Summer Indoor return air enters unit by return air inlet 10, enters porous pottery after hot and humid area is carried out at high pressure nozzle 6 The return air channel cooling fresh air of porcelain plate fin type indirect evaporative cooler 5, enters rotary-type recuperation of heat by water blocking filler b19 later After 25 caloic of device return side exchanges, the return air for absorbing heat is discharged into outdoor from exhaust outlet 22 by exhaust blower 21.
Rotary-type heat regenerator fresh air side 30 and rotary-type heat regenerator return side 25 in winter with summer operation when, effect On the contrary, so as to carry out pre-heater or pre-cooler processing to outdoor fresh air, achieve the purpose that cold and heat recovery, porous ceramics directly steams during winter Hair cooler 5 act as humidifying, and high-pressure fog unit is not sprayed water in winter.
(2) the water system course of work
Recirculated water in cyclic water tank a8 is sent to high-pressure fog unit under the power effect of water circulating pump a9 along water pipe a7 In, the recirculated water not being pulled away is fallen after rise to cyclic water tank a8;
Enter in porous ceramic plate fin type indirect evaporative cooler 5 after the spray of high pressure nozzle 6 and changed with indoor return air Heat, a part of water are taken away by return air, fall on water blocking filler 13, some is along porous ceramic plate fin type indirect evaporating-cooling The wall surface of device 5 is flowed back in cyclic water tank 8, is moved in circles;
Recirculated water in cyclic water tank b16 is sent to spray unit 18 under the power effect of water circulating pump b15 along water pipe 14 In, after spray, with carrying out hot and humid area by 5 fresh air after cooling of porous ceramic plate fin type indirect evaporative cooler, wherein A part of water is taken away by fresh air, falls on water blocking filler a13, some is dropped back into cyclic water tank b16, is moved in circles.
Present invention evaporation cooling Fresh air handling units, make full use of indoor return air, improve fresh air quality and the operational efficiency of unit, Operation energy consumption is not only reduced, and compact-sized, space is small.

Claims (9)

  1. The but Fresh air handling units 1. runner heat reclamation type porous ceramics compound type steamed feels cold, which is characterized in that including housing, in housing from Top to bottm is arranged in parallel with two layers of channel, and the heat regenerator (3) through two layers of channel and steaming indirectly are also disposed in housing Cooler (5) is sent out, the indirect evaporation cooler (5) is obliquely installed, and makes two layers of channel with indirect evaporation cooler (5) for node It is formed in the fresh air channel (23) of reversed cross flow and return air channel (24);
    The fresh air channel (23) corresponds to the fresh wind port (1) of both sides and air outlet (11) including housing, and fresh wind port (1) is interior according to sky Flow of air direction is disposed with filter device (2), heat regenerator (3), indirect evaporation cooler (5), direct evaporating-cooling list Member, water blocking filler a (13) and pressure fan (12);
    The return air channel (24) corresponds to the return air inlet (10) of both sides and exhaust outlet (22) including housing, in return air inlet (10) according to Air-flow direction is disposed with high-pressure fog unit, indirect evaporation cooler (5), water blocking filler b (19), heat regenerator (3) and exhaust blower (21).
  2. The but Fresh air handling units 2. runner heat reclamation type porous ceramics compound type steamed according to claim 1 feels cold, feature exist In the filter device (2) is specially primary filter.
  3. The but Fresh air handling units 3. runner heat reclamation type porous ceramics compound type steamed according to claim 1 feels cold, feature exist In the heat regenerator (3) is rotary-type heat regenerator, and including babinet, runner (31) and transmission device are provided in babinet (28), runner (31) and transmission device (28) are connected by driving belt (27);
    The runner (31) has been disposed radially partition board (26), and it is new that runner (31) is bisected into rotary-type heat regenerator by partition board (26) Wind side (30) and rotary-type heat regenerator return side (25).
  4. The but Fresh air handling units 4. runner heat reclamation type porous ceramics compound type steamed according to claim 3 feels cold, feature exist In being additionally provided with sealing strip (29) on the runner (31).
  5. The but Fresh air handling units 5. runner heat reclamation type porous ceramics compound type steamed according to claim 1 feels cold, feature exist In the direct evaporating-cooling unit includes porous ceramic filler (17), and it is single that spray is provided at the top of porous ceramic filler (17) First (18), porous ceramic filler (17) bottom are provided with cyclic water tank b (16), and spray unit (18) and cyclic water tank b (16) are logical Cross water pipe b (14) connections.
  6. The but Fresh air handling units 6. runner heat reclamation type porous ceramics compound type steamed according to claim 5 feels cold, feature exist In being provided with water circulating pump b (15) on the water pipe b (14).
  7. The but Fresh air handling units 7. runner heat reclamation type porous ceramics compound type steamed according to claim 1 feels cold, feature exist In the high-pressure fog unit includes several high pressure nozzles (6) sprayed towards heat regenerator (3), and high pressure nozzle (6) passes through water Pipe a (7) connects the cyclic water tank a (8) of bottom.
  8. The but Fresh air handling units 8. runner heat reclamation type porous ceramics compound type steamed according to claim 7 feels cold, feature exist In being provided with water circulating pump a (9) on the water pipe a (7).
  9. The but Fresh air handling units 9. runner heat reclamation type porous ceramics compound type steamed according to claim 1 feels cold, feature exist In the indirect evaporation cooler (5) is porous ceramic plate fin type indirect evaporative cooler.
CN201711407621.1A 2017-12-22 2017-12-22 Runner heat reclamation type porous ceramics compound type steamed feels cold but Fresh air handling units Pending CN108168055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711407621.1A CN108168055A (en) 2017-12-22 2017-12-22 Runner heat reclamation type porous ceramics compound type steamed feels cold but Fresh air handling units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711407621.1A CN108168055A (en) 2017-12-22 2017-12-22 Runner heat reclamation type porous ceramics compound type steamed feels cold but Fresh air handling units

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109827282A (en) * 2019-01-23 2019-05-31 西安工程大学 A kind of heat pipe-type fresh air ventilator combined with evaporation cooling
CN110567058A (en) * 2019-09-24 2019-12-13 王永红 Rotating wheel dehumidification fresh air cabinet machine
CN113959035A (en) * 2021-09-30 2022-01-21 西安交通大学 Air fresh air system and application

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101629743A (en) * 2009-08-24 2010-01-20 西安工程大学 Ceiling evaporating-cooling fresh air handling unit using porous ceramic evaporative cooler
CN202024420U (en) * 2011-03-30 2011-11-02 西安工程大学 Runner type indirect-direct composite evaporation cooling air conditioning unit
CN202092251U (en) * 2011-05-09 2011-12-28 西安工程大学 Air conditioner set combined with plate fin type indirect and direct devaporizers for machine room
CN202254019U (en) * 2011-09-26 2012-05-30 西安工程大学 Rotary recirculation-type evaporative cooling air conditioning unit
CN103791592A (en) * 2014-02-25 2014-05-14 上海理工大学 Cooling and dehumidification method applied to temperature and humidity independent control system
CN205048602U (en) * 2015-08-06 2016-02-24 吕智 Dehumidification runner and indirect evaporation cooling heat recovery fresh air conditioning of heat pump manifold type

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101629743A (en) * 2009-08-24 2010-01-20 西安工程大学 Ceiling evaporating-cooling fresh air handling unit using porous ceramic evaporative cooler
CN202024420U (en) * 2011-03-30 2011-11-02 西安工程大学 Runner type indirect-direct composite evaporation cooling air conditioning unit
CN202092251U (en) * 2011-05-09 2011-12-28 西安工程大学 Air conditioner set combined with plate fin type indirect and direct devaporizers for machine room
CN202254019U (en) * 2011-09-26 2012-05-30 西安工程大学 Rotary recirculation-type evaporative cooling air conditioning unit
CN103791592A (en) * 2014-02-25 2014-05-14 上海理工大学 Cooling and dehumidification method applied to temperature and humidity independent control system
CN205048602U (en) * 2015-08-06 2016-02-24 吕智 Dehumidification runner and indirect evaporation cooling heat recovery fresh air conditioning of heat pump manifold type

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109827282A (en) * 2019-01-23 2019-05-31 西安工程大学 A kind of heat pipe-type fresh air ventilator combined with evaporation cooling
CN110567058A (en) * 2019-09-24 2019-12-13 王永红 Rotating wheel dehumidification fresh air cabinet machine
CN113959035A (en) * 2021-09-30 2022-01-21 西安交通大学 Air fresh air system and application

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Application publication date: 20180615

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