CN109489142A - Oxygen-enriched air purifying fresh air unit - Google Patents

Oxygen-enriched air purifying fresh air unit Download PDF

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Publication number
CN109489142A
CN109489142A CN201811322221.5A CN201811322221A CN109489142A CN 109489142 A CN109489142 A CN 109489142A CN 201811322221 A CN201811322221 A CN 201811322221A CN 109489142 A CN109489142 A CN 109489142A
Authority
CN
China
Prior art keywords
oxygen
air
enriched
fresh
chamber
Prior art date
Application number
CN201811322221.5A
Other languages
Chinese (zh)
Inventor
谢东
吴祥
王汉青
王晨华
Original Assignee
南华大学
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 南华大学 filed Critical 南华大学
Priority to CN201811322221.5A priority Critical patent/CN109489142A/en
Publication of CN109489142A publication Critical patent/CN109489142A/en

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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
    • 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
    • F24F3/16Air-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 purification, e.g. by filtering; by sterilisation; by ozonisation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures
    • F24F7/04Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures with ducting systems also by double walls; with natural circulation
    • F24F7/06Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures with ducting systems also by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures with ducting systems also 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
    • F24F8/60

Abstract

Oxygen-enriched air purifying fresh air unit, including cabinet, panel, aeration device, the first Electric air valve, air mixing chamber, oxygen-enriching device, pressure release valve, gas outlet, the second Electric air valve, centrally connected power source adapter and intelligent controller.Aeration device, air mixing chamber and oxygen-enriching device are mounted on the bottom plate of cabinet, fresh air outlet on aeration device is connect with the first Electric air valve, the other end of first Electric air valve mixes with air the connection of the fresh inlet pipe on room, oxygen-enriched air outlet on oxygen-enriching device is connect with the second Electric air valve, the other end of second Electric air valve mixes with air the connection of the oxygen-enriched air inlet tube on room, pressure release valve is connect with the waste gas outlet pipe in oxygen-enriched chamber, the other end of pressure release valve is connect with gas outlet, the other end of gas outlet reaches outside cabinet, panel is mounted on cabinet by screw, centrally connected power source adapter and intelligent controller are mounted on panel.

Description

Oxygen-enriched air purifying fresh air unit

Technical field

The present invention relates to Techniques for Indoor Air Purification fields, especially a kind of to utilize oxygen permeable membrane oxygen producing to indoor offer The air purification fresh air blower group of oxygen-enriched fresh air.

Background technique

As the improvement of people's living standards, increasingly focusing on for indoor air quality.People use air-conditioning for a long time, Indoor oxygen concentration can be reduced to 19% hereinafter, to make to stay in for a long time indoor people may feel that fatigue it is out of strength, slow in reacting, It is drowsiness, phenomena such as shortness of breath uncomfortable in chest, nausea headache.

Existing room conditioning does not have oxygen separating function mostly, and purification function is also fairly simple, and does not provide fresh sky Gas.Existing Fresh air handling units are directly from outdoor introducing fresh air, since outdoor environment pollution is got worse, especially PM2.5 long Time is under exceeded state, directly may cause indoor pollution aggravation from outdoor introducing fresh air, while oxygen content is not in fresh air Height, normal matched fresh air volume are difficult to be maintained at room air in the range of the optimum oxygen concentration 24%-30% of people.

Summary of the invention

A kind of oxygen-enriched air purifying fresh air unit is provided the purpose of the present invention is overcoming the above-mentioned insufficient of the prior art.

The technical scheme is that oxygen-enriched air purifying fresh air unit, including cabinet, panel, aeration device, the first electricity Dynamic air-valve, air mixing chamber, oxygen-enriching device, pressure release valve, gas outlet, the second Electric air valve, centrally connected power source adapter and intelligence It can control device.

The aeration device includes fresh air chamber, fresh-air fan, fresh air inlet pipe, protective net, activated charcoal strainer, height Imitate air filter, fresh air outlet and aeration device mounting bracket.Activated charcoal strainer and high efficiency particle air filter are fitted in It is installed along in the middle part of the inner cavity of fresh air chamber, fresh air inlet pipe and protective net are successively connected with one end of fresh-air fan by screw It connects, the other end of fresh-air fan is connect by screw with the fresh inlet end of fresh air chamber, and fresh air outlet passes through welding and fresh air The fresh air outlet end of chamber connects, and aeration device mounting bracket is welded on the tube wall of fresh air chamber, for installing aeration device.

The air mixing chamber includes cabinet, and fresh inlet pipe, oxygen-enriched air inlet tube are respectively equipped on cabinet and is mixed Air outlet slit pipe is closed, is equipped with protective net in mixing air outlet, cabinet mounting bracket is welded on cabinet, for installing air Mixing chamber.

The oxygen-enriching device includes oxygen-enriched chamber, oxygen-enriched air inlet tube, oxygen-enriched blower, air inlet duct, oxygen-enriched air Outlet, oxygen permeable membrane, protective net, waste gas outlet pipe and oxygen-enriching device mounting bracket.Oxygen permeable membrane is mounted in the inner cavity of oxygen-enriched chamber Portion, oxygen-enriched air inlet tube and waste gas outlet pipe are respectively welded on the siding of oxygen-enriched chamber oxygen-enriched air input end, oxygen-enriched air Outlet is welded on the siding of oxygen-enriched chamber oxygen-enriched air outlet end, and the other end of oxygen-enriched air inlet tube passes through the oxygen-enriched wind of screw The other end of machine connection, oxygen-enriched blower is successively connect with protective net and air inlet duct by screw.

The mounting bracket that aeration device, air mixing chamber and oxygen-enriching device pass through thereon respectively is mounted on the bottom plate of cabinet On, the air intake on the mixing air outlet and oxygen-enriching device on fresh air inlet pipe, air mixing chamber on aeration device Pipe reaches outside cabinet respectively, and the fresh air outlet on aeration device is connect with the first Electric air valve, the first Electric air valve it is another One end mixes with air the connection of the fresh inlet pipe on room, and the oxygen-enriched air outlet and the second Electric air valve on oxygen-enriching device connect It connects, the other end of the second Electric air valve mixes with air the connection of the oxygen-enriched air inlet tube on room, pressure release valve and oxygen-enriched chamber On waste gas outlet pipe connection, the other end of pressure release valve connect with gas outlet, and the other end of gas outlet reaches outside cabinet, Panel is mounted on cabinet by screw, and centrally connected power source adapter and intelligent controller are mounted on panel.

Oxygen-enriched air purifying fresh air unit is mounted on interior, and the fresh air inlet pipe on aeration device is big by pipeline and outdoor Gas phase is logical, introduces outdoor air.Air inlet duct oxygen-enriched air derives from room air, pipeline can also be added from outdoor according to demand It introduces.Oxygen-enriched air purifying fresh air unit can provide respectively fresh air mode, oxygen-enriched fresh air mode and oxygen-enriched when working for interior Mode.

Fresh air mode only provides fresh air for interior, fresh-air fan is opened, from outdoor introduction fresh air, by protective net, activity Charcoal filter screen and high efficiency particle air filter are combined particulate matter, bacterium and pernicious gas in filtering removal air, purification Significant effect provides fresh air for interior.

Oxygen-enriched fresh air mode provides oxygen-enriched fresh air for interior, and indoor oxygen sensor detected that indoor oxygen concentration was low at that time When 24%, while opening operation fresh air mode, oxygen-enriched blower is opened, the oxygen-enriched air for producing high concentration is mixed in air Room is mixed with the fresh air Jing Guo purified treatment, provides oxygen-enriched fresh air for interior.

Oxygen-enriched mode only provided for interior it is oxygen-enriched, when there is haze or PM2.5 index high bad weather excessively in outdoor, only Oxygen-enriched blower is opened, maintains indoor suitable oxygen concentration for the oxygen-enriched air that interior provides high concentration, but do not provide outdoor new Fresh air.

Compared with the prior art, the invention has the following features:

1, oxygen-enriched air purifying fresh air unit provided by the invention, can be provided for interior fresh air mode, oxygen-enriched fresh air mode and Oxygen-enriched mode, the fresh air of high oxygen concentration cannot be provided by solving existing Fresh air handling units, while also solve existing oxygen processed Machine utilize merely room air purify oxygen, without supplement outdoor fresh air the drawbacks of.

2, oxygen-enriched air purifying fresh air unit provided by the invention is used using double air channel structures, by aeration device and oxygen-enriched Device is mounted in same cabinet, and structure is simple, solves the problems, such as that Fresh air handling units and oxygenerator occupied space are separately provided, simultaneously Form the advantage that product cost is lower, the market competitiveness is strong.

Detailed construction of the invention is further described below in conjunction with the drawings and specific embodiments.

Detailed description of the invention

Accompanying drawing 1 is the structural representation of the present invention;

Attached drawing 2 is the structural schematic diagram of aeration device;

Attached drawing 3 is the left view of attached drawing 2;

Attached drawing 4 is the right view of attached drawing 2;

Attached drawing 5 is the structural schematic diagram of air mixing chamber;

Attached drawing 6 is the left view of attached drawing 5;

Attached drawing 7 is the right view of attached drawing 5;

Attached drawing 8 is the structural schematic diagram of oxygen-enriching device;

Attached drawing 9 is the left view of attached drawing 8.

Specific embodiment

Oxygen-enriched air purifying fresh air unit, including the mixing of cabinet 1, panel 2, aeration device 3, the first Electric air valve 4, air Room 5, oxygen-enriching device 6, pressure release valve 7, gas outlet 8, the second Electric air valve 9, centrally connected power source adapter 10 and intelligent controller 11。

The aeration device 3 includes fresh air chamber 3-1, fresh-air fan 3-2, fresh air inlet pipe 3-3, protective net 3-4, work Property charcoal filter screen 3-5, high efficiency particle air filter 3-6, fresh air outlet 3-7 and aeration device mounting bracket 3-8.Active carbon filtering Net 3-5 and high efficiency particle air filter 3-6, which fits together, to be mounted in the middle part of the inner cavity of fresh air chamber 3-1, fresh air inlet pipe 3-3 and anti- Protective net 3-4 is successively connect with one end of fresh-air fan 3-2 by screw, and the other end of fresh-air fan 3-2 passes through screw and fresh air The fresh inlet end of chamber 3-1 connects, and fresh air outlet 3-7 is connect by welding with the fresh air outlet end of fresh air chamber 3-1, fresh air dress The tube wall that mounting bracket 3-8 is welded on fresh air chamber 3-1 is set, for installing aeration device 3.

The protective net 3-4 is mounted between fresh air inlet pipe 3-3 and fresh-air fan 3-2, for preventing fallen leaves, insect Etc. large particles enter, to fresh-air fan 3-2 cause abrasion even destroy.

The fresh-air fan 3-2 uses frequency conversion fan, and the intelligent controller 11 being arranged on panel 2 controls, according to Indoor fresh air amount demand changes blower frequency, enters for outdoor fresh air and provides power.

The activated charcoal strainer 3-5 uses the paper honeycomb of through-hole structure for carrier, built-in wood activated charcoal powder.

The strainer of the high efficiency particle air filter 3-6 selects HEPA efficient filter, be used to particulate matter in air filtering, The pollutants such as bacterium.

The air mixing chamber 5 includes cabinet 5-1, is respectively equipped with fresh inlet pipe 5-2, oxygen-enriched air on cabinet 5-1 Protective net 5-6, cabinet mounting bracket 5-5 are equipped in inlet tube 5-3 and mixing air outlet 5-4, mixing air outlet 5-4 It is welded on cabinet 5-1, for installing air mixing chamber 5.

The oxygen-enriching device 6 includes oxygen-enriched chamber 6-1, oxygen-enriched air inlet tube 6-2, oxygen-enriched blower 6-3, air inlet duct 6-4, oxygen-enriched air outlet 6-5, oxygen permeable membrane 6-6, protective net 6-7, waste gas outlet pipe 6-8 and oxygen-enriching device mounting bracket 6-9. Oxygen permeable membrane 6-6 is mounted in the middle part of the inner cavity of oxygen-enriched chamber 6-1, and oxygen-enriched air inlet tube 6-2 and waste gas outlet pipe 6-8 are respectively welded at On the siding of oxygen-enriched chamber 6-1 oxygen-enriched air input end, oxygen-enriched air outlet 6-5 is welded on the outlet of oxygen-enriched chamber 6-1 oxygen-enriched air On the siding at end, for the other end of oxygen-enriched air inlet tube 6-2 by the oxygen-enriched blower 6-3 connection of screw, oxygen-enriched blower 6-3's is another End is successively connect with protective net 6-7 and air inlet duct 6-4 by screw.

The protective net 6-7 is used to prevent the large particles such as fallen leaves, insect from entering, and causes to wear to oxygen-enriched blower 6-3 Even destroy.

The oxygen-enriched blower 6-3 uses frequency conversion fan, is controlled by the intelligent controller 11 in setting indoors panel, root Indoor oxygen concentration size is detected to change oxygen-enriched blower 6-3 frequency according to indoor oxygen sensor, is produced for oxygen permeable membrane 6-6 oxygen-enriched Air provides power.

The oxygen permeable membrane 6-6 acts on lower oxygen permeable membrane 6-6 to OTR oxygen transmission rate using ceramic Materials For Oxygen-enrichment Membrane, using pressure Higher than the principle of the gases such as nitrogen, the high-voltage high-speed air of oxygen-enriched blower 6-3 discharge is separated into oxygen and nitrogen by oxygen permeable membrane 6-6 Gas, oxygen under the action of high pressure draught by the second Electric air valve 9 enter air mixing chamber 5, the nitrogen separated and its The pressure release valve 7 that his gas then passes through ante-chamber is discharged into outdoor.

Aeration device 3, air mixing chamber 5 and oxygen-enriching device 6 are mounted on the bottom of cabinet 1 by mounting bracket thereon respectively On plate, the fresh air inlet pipe 3-3 on aeration device 3, on mixing air outlet 5-4 and oxygen-enriching device 6 on air mixing chamber 5 Air inlet duct 6-4 reached outside cabinet 1 respectively, fresh air outlet 3-7 on aeration device 3 and the first Electric air valve 4 connect It connects, the other end of the first Electric air valve 4 mixes with air the fresh inlet pipe 5-2 connection on room 5, oxygen-enriched on oxygen-enriching device 6 Air outlet slit pipe 6-5 is connect with the second Electric air valve 9, and the other end of the second Electric air valve 9 mixes with air the oxygen-enriched sky on room 5 Gas inlet pipe 5-3 connection, pressure release valve 7 are connect with the waste gas outlet pipe 6-8 on oxygen-enriched chamber 6-1, pressure release valve 7 it is another End is connect with gas outlet 8, and the other end of gas outlet 8 reaches outside cabinet 1, and panel 2 is mounted on cabinet 1 by screw, is concentrated Power supply adaptor 10 and intelligent controller 11 are mounted on panel 2.

The pressure release valve 7 is used to be vented, and when hypertonia in air mixing chamber 5, pressure release valve 7 is in pressure Effect is lower automatic discouraged, and the nitrogen separated and other gases are discharged into outdoor, release partial pressure.

The centrally connected power source adapter 10, by 220VAC alternating current inversion be 12VDC safe voltage, be fresh-air fan 3-2, Oxygen-enriched blower 6-3, the first Electric air valve 4, the second Electric air valve 9 and intelligent controller 11 provide power supply.

The intelligent controller 11, is powered by centrally connected power source adapter 10, the first Electric air valve of intelligent control 4 and second The aperture of Electric air valve 9 adjusts intake, and intelligent control fresh air mode, oxygen-enriched fresh air mode, oxygen-enriched mode.

Oxygen-enriched air purifying fresh air unit is mounted on interior, and the fresh air inlet pipe 3-3 on aeration device 3 passes through pipeline and room Outer atmosphere communicates, and introduces outdoor air.Air inlet duct 6-4 oxygen-enriched air is typically derived from room air, can also be according to demand Add pipeline from outdoor introducing.Oxygen-enriched air purifying fresh air unit can provide respectively fresh air mode, oxygen-enriched new for interior when working Wind mode and oxygen-enriched mode.

Fresh air mode only provides fresh air for interior, fresh-air fan 3-2 is opened, from outdoor introduction fresh air, by protective net 3- 4, activated charcoal strainer 3-5 and high efficiency particle air filter 3-6 is combined the particulate matter filtered in removal air, bacterium and has Evil gas, clean-up effect is significant, provides fresh air for interior.

Oxygen-enriched fresh air mode provides oxygen-enriched fresh air for interior, and indoor oxygen sensor detected that indoor oxygen concentration was low at that time When 24%, while opening operation fresh air mode, oxygen-enriched blower 6-3 is opened, the oxygen-enriched air for producing high concentration is mixed in air It closes room 5 to mix with the fresh air Jing Guo purified treatment, provides oxygen-enriched fresh air for interior.

Oxygen-enriched mode only provided for interior it is oxygen-enriched, when there is haze or PM2.5 index high bad weather excessively in outdoor, only Oxygen-enriched blower 6-3 is opened, maintains indoor suitable oxygen concentration for the oxygen-enriched air that interior provides high concentration, but do not provide outdoor Fresh air.

Claims (5)

1. oxygen-enriched air purifying fresh air unit, it is characterized in that: including cabinet, panel, aeration device, the first Electric air valve, air Mixing chamber, oxygen-enriching device, pressure release valve, gas outlet, the second Electric air valve, centrally connected power source adapter and intelligent controller, newly The mounting bracket that wind apparatus, air mixing chamber and oxygen-enriching device pass through thereon respectively is mounted on the bottom plate of cabinet, aeration device On fresh air inlet pipe, the air inlet duct on mixing air outlet and oxygen-enriching device on air mixing chamber reaches respectively Outside cabinet, the fresh air outlet on aeration device is connect with the first Electric air valve, and the other end and air of the first Electric air valve are mixed The fresh inlet pipe connection on room is closed, the oxygen-enriched air outlet on oxygen-enriching device is connect with the second Electric air valve, and second is electronic The other end of air-valve mixes with air the connection of the oxygen-enriched air inlet tube on room, the waste gas outlet in pressure release valve and oxygen-enriched chamber Pipe connection, the other end of pressure release valve are connect with gas outlet, and the other end of gas outlet reaches outside cabinet, and panel passes through screw It is mounted on cabinet, centrally connected power source adapter and intelligent controller are mounted on panel.
2. oxygen-enriched air purifying fresh air unit as described in claim 1, it is characterized in that: the aeration device includes fresh air Chamber, fresh-air fan, fresh air inlet pipe, protective net, activated charcoal strainer, high efficiency particle air filter, fresh air outlet and fresh air dress Mounting bracket is set, activated charcoal strainer and high efficiency particle air filter, which fit together, to be mounted in the middle part of the inner cavity of fresh air chamber, fresh air Inlet tube and protective net are successively connect with one end of fresh-air fan by screw, and the other end of fresh-air fan passes through screw and fresh air The fresh inlet end of chamber connects, and fresh air outlet is connect by welding with the fresh air outlet end of fresh air chamber, aeration device installation branch Frame is welded on the tube wall of fresh air chamber, for installing aeration device.
3. oxygen-enriched air purifying fresh air unit as claimed in claim 1 or 2, it is characterized in that: the air mixing chamber includes Cabinet, is respectively equipped with fresh inlet pipe, oxygen-enriched air inlet tube and mixing air outlet on cabinet, in mixing air outlet Equipped with protective net, cabinet mounting bracket is welded on cabinet, for installing air mixing chamber.
4. oxygen-enriched air purifying fresh air unit as claimed in claim 1 or 2, it is characterized in that: the oxygen-enriching device includes richness Oxygen chamber, oxygen-enriched air inlet tube, oxygen-enriched blower, air inlet duct, oxygen-enriched air outlet, oxygen permeable membrane, protective net, waste gas outlet Pipe and oxygen-enriching device mounting bracket, oxygen permeable membrane are mounted in the middle part of the inner cavity of oxygen-enriched chamber, oxygen-enriched air inlet tube and waste gas outlet pipe It is respectively welded on the siding of oxygen-enriched chamber oxygen-enriched air input end, oxygen-enriched air outlet is welded on the outlet of oxygen-enriched chamber oxygen-enriched air On the siding at end, for the other end of oxygen-enriched air inlet tube by the oxygen-enriched blower connection of screw, the other end of oxygen-enriched blower passes through spiral shell Nail is successively connect with protective net and air inlet duct.
5. oxygen-enriched air purifying fresh air unit as claimed in claim 3, it is characterized in that: the oxygen-enriching device includes oxygen-enriched Chamber, oxygen-enriched air inlet tube, oxygen-enriched blower, air inlet duct, oxygen-enriched air outlet, oxygen permeable membrane, protective net, waste gas outlet pipe And oxygen-enriching device mounting bracket, oxygen permeable membrane are mounted in the middle part of the inner cavity of oxygen-enriched chamber, oxygen-enriched air inlet tube and waste gas outlet pipe point It is not welded on the siding of oxygen-enriched chamber oxygen-enriched air input end, oxygen-enriched air outlet is welded on oxygen-enriched chamber oxygen-enriched air outlet end Siding on, the other end of oxygen-enriched air inlet tube passes through screw by the oxygen-enriched blower connection of screw, the other end of oxygen-enriched blower Successively it is connect with protective net and air inlet duct.
CN201811322221.5A 2018-11-08 2018-11-08 Oxygen-enriched air purifying fresh air unit CN109489142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811322221.5A CN109489142A (en) 2018-11-08 2018-11-08 Oxygen-enriched air purifying fresh air unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811322221.5A CN109489142A (en) 2018-11-08 2018-11-08 Oxygen-enriched air purifying fresh air unit

Publications (1)

Publication Number Publication Date
CN109489142A true CN109489142A (en) 2019-03-19

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CN201811322221.5A CN109489142A (en) 2018-11-08 2018-11-08 Oxygen-enriched air purifying fresh air unit

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2874331Y (en) * 2006-03-24 2007-02-28 北京同方洁净技术有限公司 Xinfeng air exchanging machine
CN203068671U (en) * 2013-01-16 2013-07-17 孙杰 Double-operational-mode air purifier
CN106091230A (en) * 2016-05-27 2016-11-09 刘朝军 A kind of fresh air system of indoors artificial intelligence
CN106152328A (en) * 2015-04-17 2016-11-23 李民 A kind of oxygen-enriched new wind carrying method and system
CN106678992A (en) * 2017-03-08 2017-05-17 孙金鹏 Intelligent fresh and return air volume adjusting type air purifier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2874331Y (en) * 2006-03-24 2007-02-28 北京同方洁净技术有限公司 Xinfeng air exchanging machine
CN203068671U (en) * 2013-01-16 2013-07-17 孙杰 Double-operational-mode air purifier
CN106152328A (en) * 2015-04-17 2016-11-23 李民 A kind of oxygen-enriched new wind carrying method and system
CN106091230A (en) * 2016-05-27 2016-11-09 刘朝军 A kind of fresh air system of indoors artificial intelligence
CN106678992A (en) * 2017-03-08 2017-05-17 孙金鹏 Intelligent fresh and return air volume adjusting type air purifier

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