CN103499124A - Method and system for purifying indoor fresh air - Google Patents
Method and system for purifying indoor fresh air Download PDFInfo
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- CN103499124A CN103499124A CN201310490119.7A CN201310490119A CN103499124A CN 103499124 A CN103499124 A CN 103499124A CN 201310490119 A CN201310490119 A CN 201310490119A CN 103499124 A CN103499124 A CN 103499124A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 44
- 238000004887 air purification Methods 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 10
- 230000003750 conditioning effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000011109 contamination Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 3
- 239000011859 microparticle Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
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Abstract
The invention discloses a method and system for purifying indoor fresh air. According to the method, an air inlet fan sucks air filtered by an air filter into a room, an exhaust fan sucks the indoor air out of the room, at least one of the air inlet fan and the exhaust fan is a speed-adjustable fan, the content of indoor pollution gas is detected through a detection component in real time, and when the content of the indoor pollution gas is lower than a preset value, a control component controls the speed-adjustable fan to adjust the room to be in a positive-pressure state; when the content of the indoor pollution gas is higher than the preset value, the control component controls the speed-adjustable fan to adjust the room to be in a negative-pressure state. The system comprises the air filter, the air inlet fan, the exhaust fan, the control component and the detection component, at least one of the air inlet fan and the exhaust fan is the speed-adjustable fan, the control component sends control instructions to the speed-adjustable fan to control the air inlet volume or/and the air exhaust volume according to the detection signals of the detection component, and the difference of indoor pressure and outdoor pressure is adjusted. The method and system are simple in structure, low in cost, easy to achieve and good in purification effect.
Description
Technical field
The present invention relates to the indoor fresh air purification techniques, relate in particular to a kind of purification method and system purified for indoor fresh air.
Background technology
At present, a lot of families, factory building, workshop etc. are useful the indoor fresh air cleaning system, for indoor, provide clean air ambient.The indoor fresh air cleaning system has generally comprised air filter machine and new blower fan group, be provided with air intake blower fan and exhaust fan in new blower fan group, (PM2.5 concentration is far below air quality standard required standard value for the air after air filter machine is filtered for air intake blower fan, for example: the filter efficiency to PM2.5 is 98%) suction is indoor, exhaust fan is for being drawn to outdoor by indoor air, form air circulation, to reach the purpose that reduces indoor PM2.5 concentration.
But, from current result of use, after using this indoor fresh air cleaning system, although the personnel in room feel as snug as a bug in a rug, if detect with instrumentation, will find to only have the PM2.5 ≈ 10ug/m at close blower fan group place in room
3, and in room other local PM2.5 considerably beyond 10ug/m
3, reached 30 ug/m
3so the fresh air purifying resultant effect is unsatisfactory.Therefore, the comprehensive purifying effect that how to improve the indoor fresh air cleaning system is to need at present the problem of solution badly.
Summary of the invention
The technical problem to be solved in the present invention is: the deficiency existed for prior art, provide a kind of simple in structure, with low cost, be easy to realization, good purification, in indoor indoor fresh air purification method and the system of taking into account comfortableness and air purity.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of indoor fresh air purification method, air suction after with air intake blower fan, air filter machine being filtered is indoor, with exhaust fan, room air is drawn to outdoor, in air intake blower fan and exhaust fan, at least one selects the adjustable speed blower fan, and with the real-time sensing chamber of detection components internal contamination gas content, during lower than preset value, by Control Component, control the adjustable speed blower fan by the indoor barotropic state that is adjusted to when indoor polluted gas content; During higher than preset value, by Control Component, control the adjustable speed blower fan by the indoor negative pressure state that is adjusted to when indoor polluted gas content.
As further improvement in the technical proposal:
Described air intake blower fan is the adjustable speed blower fan, and described exhaust fan is blower fan at the uniform velocity, and when detection components detects indoor polluted gas content lower than preset value, Control Component is controlled the air intake blower fan speedup, makes intake be greater than exhaust air rate; When detection components detects indoor polluted gas content higher than preset value, Control Component is controlled air intake blower fan and is slowed down, and makes intake be less than exhaust air rate.
Described air intake blower fan is blower fan at the uniform velocity, and described exhaust fan is the adjustable speed blower fan, and when detection components detects indoor polluted gas content lower than preset value, Control Component is controlled exhaust fan and slowed down, and makes exhaust air rate be less than intake; When detection components detects indoor polluted gas content higher than preset value, Control Component is controlled the exhaust fan speedup, makes exhaust air rate be greater than intake.
Described air intake blower fan and exhaust fan are the adjustable speed blower fan, and when detection components detects indoor polluted gas content lower than preset value, Control Component controls the air intake blower fan speedup or/and exhaust fan slows down, and makes intake be greater than exhaust air rate; When detection components detects indoor polluted gas content higher than preset value, Control Component is controlled air intake blower fan and is slowed down or/and the exhaust fan speedup makes intake be less than exhaust air rate.
A kind of cleaning system of the indoor fresh air for above-mentioned indoor fresh air purification method, comprise air filter machine, for the air suction after air filter machine is filtered indoor air intake blower fan, for room air being drawn to outdoor exhaust fan, also comprise Control Component and for detection of the detection components of indoor polluted gas content, in described air intake blower fan and exhaust fan, at least one is the adjustable speed blower fan, described Control Component according to the detection signal sending controling instruction of detection components to the adjustable speed blower fan to control intake or/and exhaust air rate, the conditioning chamber inside and outside differential pressure.
As further improvement in the technical proposal:
Described adjustable speed blower fan is stepless speed regulating blower fan.
Compared with prior art, the invention has the advantages that: indoor fresh air purification method of the present invention, carry out the pressure differential inside and outside conditioning chamber by controlling the adjustable speed blower fan, when detection components detects indoor polluted gas content higher than preset value, Control Component will be automatically by the indoor negative pressure state that is adjusted to, indoor contaminated gas with negative pressure fast discharged to outdoor; When detection components detects indoor polluted gas content lower than preset value, Control Component will be automatically by the indoor malleation (approximately 4-8Pa) that is adjusted to, to guarantee that indoor air ambient is all to process and form through fresh air purifying, the outdoor new wind that undressed, microparticle content is higher is repelled outdoor by indoor pressure-fired, through suitable ventilation cycle, indoor PM2.5 concentration everywhere will approach or reach the index in air intake blower fan exit.So, indoor fresh air purification method of the present invention, can utilize indoor positive pressure to prevent that outdoor unfiltered air from entering indoor and affecting IAQ from the gap, room, outside the peculiar smell and the timely discharge chamber of poisonous and harmful substance that can utilize again indoor negative pressure to be given out by indoor crowd, furniture and ornament etc., thereby effectively improved the fresh air purifying effect, strengthened the comfortableness of indoor environment.Indoor fresh air cleaning system of the present invention, have and the corresponding technique effect of said method, and only need on the basis of existing VMC, set up detection components and Control Component, and by air intake blower fan or/and exhaust fan adopts the adjustable speed blower fan get final product, simple in structure, with low cost, be easy to realization.
The accompanying drawing explanation
Fig. 1 is the structural representation of the present invention in concrete application example.
The control principle drawing that Fig. 2 is the embodiment of the present invention 1.
The control principle drawing that Fig. 3 is the embodiment of the present invention 2.
The control principle drawing that Fig. 4 is the embodiment of the present invention 3.
Marginal data: 1, air filter machine; 2, air intake blower fan; 3, exhaust fan; 4, Control Component; 5, detection components; 6, room.
The specific embodiment
Below in conjunction with specific embodiments and the drawings, the present invention is described in further detail.
As shown in Figures 1 to 4, indoor fresh air purification method of the present invention, the air suction after with air intake blower fan 2, air filter machine 1 being filtered is indoor, with exhaust fan 3, room air is drawn to outdoor.In air intake blower fan 2 and exhaust fan 3, at least one selects the adjustable speed blower fan, and with detection components 5 real-time sensing chamber internal contamination gas contents, during lower than preset value, by Control Component 4, control the adjustable speed blower fans by the indoor barotropic state that is adjusted to when indoor polluted gas content; During higher than preset value, by Control Component 4, control the adjustable speed blower fans by the indoor negative pressure state that is adjusted to when indoor polluted gas content.
Due to indoor be the place of personnel's centralized activity, relative closure, circulation of air far is inferior to outdoor, particularly when the indoor stream of people, furniture, ornament etc. give out peculiar smell or toxic and harmful, just more need these indoor dusty gas are discharged, send into outdoor new wind, to guarantee the comfortableness of indoor environment simultaneously.But, due to outdoor periodic haze, in air, PM2.5 is dense, thus must filter by the 1 pair of outdoor air of air filter machine, after filtering PM2.5 microparticle, send into again indoor, to guarantee to send into the quality of room air.
But, use after air filter machine 1 the PM2.5 ≈ 10ug/m that only has close air intake blower fan 2 exits
3, and in room other local PM2.5 considerably beyond 10ug/m
3, reached 30 ug/m
3, analyze its reason and think it may is that indoor original air PM2.5 concentration is higher, outside the incomplete discharge chamber of original microparticle, but, after long fresh air supply, find that indoor PM2.5 concentration is still higher, fail all the time to descend.Just find through a large amount of experimental studies, after having enabled air filter machine 1, room pressure is lower than outdoor air pressure, and outdoor air will be directly enters indoorly from the door and window gap in room, cause indoor PM2.5 concentration to raise, air quality decline.Cause room pressure lower than the reason of outdoor air pressure: air intake blower fan 2 and exhaust fan 3 all adopt the at the uniform velocity blower fan of constant power at present, from the indoor air of air intake blower fan 2 suction, it is the air air filter machine 1 filters, air filter machine 1 has formed certain windage, therefore air quantity will be less than exhaust air rate, causes room pressure lower than outdoor air pressure.
Therefore, the present invention is set to the adjustable speed blower fan by least one in air intake blower fan 2 and exhaust fan 3, control the adjustable speed blower fan by the indoor barotropic state that is adjusted to by Control Component 4, to guarantee that entering indoor new wind is all the air after air filter machine 1 filters, the outdoor new wind that undressed, microparticle content is higher is repelled outdoor by indoor positive pressure, through suitable ventilation cycle, indoor PM2.5 concentration everywhere will approach or reach the index in air intake blower fan 2 exits.
Yet long-term barotropic state can cause indoor dusty gas not discharge in time, and dusty gas content increases gradually, and the indoor environment comfort level descends gradually.Now, need control the adjustable speed blower fan by the indoor negative pressure state that is adjusted to by Control Component 4, make indoor dusty gas fast discharged to outdoor, indoor environmental degree of comfort will take a turn for the better gradually.So, the present invention is constantly regulated indoor and outdoor pressure reduction according to the signal feedback of detection components 5, in control room, PM2.5 concentration and dusty gas content all are tending towards safe range the most at last, when guaranteeing that indoor PM2.5 concentration descends comprehensively, can guarantee indoor environmental degree of comfort, greatly promote the combination property of indoor fresh air cleaning system.
Figure 2 shows that the control principle drawing of indoor fresh air purification method embodiment 1 of the present invention, in the present embodiment, air intake blower fan 2 is the adjustable speed blower fan, exhaust fan 3 is blower fan at the uniform velocity, when detection components 5 detects indoor polluted gas content lower than preset value, Control Component 4 is controlled air intake blower fan 2 speedups, make intake be greater than exhaust air rate, by the indoor barotropic state that is adjusted to, now the air of outdoor filtered just can not enter indoor in 6 gaps from room, thereby make the air indoor by air intake blower fan 2 suction can be diffused into everywhere indoor, guarantee that indoor PM2.5 everywhere all can reach requirement.When detection components 5 detects indoor polluted gas content higher than preset value, Control Component 4 is controlled air intake blower fan 2 and is slowed down, and makes intake be less than exhaust air rate, and by the indoor negative pressure state that is adjusted to, now dusty gas just can be fast discharged to outdoor.
Figure 3 shows that the control principle drawing of another embodiment 2 of indoor fresh air purification method of the present invention, in this enforcement, air intake blower fan 2 is blower fan at the uniform velocity, exhaust fan 3 is the adjustable speed blower fan, when detection components 5 detects indoor polluted gas content lower than preset value, Control Component 4 is controlled exhaust fan 3 and is slowed down, make exhaust air rate be less than intake, by the indoor barotropic state that is adjusted to, now the air of outdoor filtered just can not enter indoor in 6 gaps from room, thereby make the air indoor by air intake blower fan 2 suction can be diffused into everywhere indoor, guarantee that indoor PM2.5 everywhere all can reach requirement.When detection components 5 detects indoor polluted gas content higher than preset value, Control Component 4 is controlled exhaust fan 3 speedups, makes exhaust air rate be greater than intake, and by the indoor negative pressure state that is adjusted to, now dusty gas just can be fast discharged to outdoor.
Figure 4 shows that the control principle drawing of another embodiment 3 of indoor fresh air purification method of the present invention, in this enforcement, air intake blower fan 2 and exhaust fan 3 are the adjustable speed blower fan, when detection components 5 detects indoor polluted gas content lower than preset value, Control Component 4 is controlled air intake blower fan 2 speedups or/and exhaust fan 3 slows down, make intake be greater than exhaust air rate, by the indoor barotropic state that is adjusted to, now the air of outdoor filtered just can not enter indoor in 6 gaps from room, thereby make the air indoor by air intake blower fan 2 suction can be diffused into everywhere indoor, guarantee that indoor PM2.5 everywhere all can reach requirement.When detection components 5 detects indoor polluted gas content higher than preset value, Control Component 4 is controlled air intake blower fan 2 and is slowed down or/and exhaust fan 3 speedups, make intake be less than exhaust air rate, by the indoor negative pressure state that is adjusted to, now dusty gas just can be fast discharged to outdoor.
Figure 1 shows that the indoor fresh air cleaning system of the present invention for above-mentioned indoor fresh air purification method, comprise air filter machine 1, air intake blower fan 2, exhaust fan 3, Control Component 4 and detection components 5.Air filter machine 1 is positioned over outdoor, for the air by outdoor, is filtered.Air intake blower fan 2 and exhaust fan 3 are installed on the wall in room 6, and air filter machine 1 is positioned at the below of air intake blower fan 2; Air intake blower fan 2 is indoor for the air suction after air filter machine 1 is filtered, and exhaust fan 3 is outdoor for room air is drawn to, and forms air circulation.Control Component 4 is connected with detection components 5, and detection components 5 is for detection of dusty gas content.In air intake blower fan 2 and exhaust fan 3, at least one is the adjustable speed blower fan, preferred stepless speed regulating blower fan, Control Component 4 according to the detection signal sending controling instruction of detection components 5 to the adjustable speed blower fan to control intake or/and exhaust air rate, the conditioning chamber inside and outside differential pressure.
Be only below the preferred embodiment of the present invention, protection scope of the present invention also not only is confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (6)
1. an indoor fresh air purification method, air suction after with air intake blower fan (2), air filter machine (1) being filtered is indoor, with exhaust fan (3), room air is drawn to outdoor, it is characterized in that: in air intake blower fan (2) and exhaust fan (3), at least one selects the adjustable speed blower fan, and with the real-time sensing chamber's internal contamination gas content of detection components (5), during lower than preset value, by Control Component (4), control the adjustable speed blower fan by the indoor barotropic state that is adjusted to when indoor polluted gas content; During higher than preset value, by Control Component (4), control the adjustable speed blower fan by the indoor negative pressure state that is adjusted to when indoor polluted gas content.
2. indoor fresh air purification method according to claim 1, it is characterized in that: described air intake blower fan (2) is the adjustable speed blower fan, described exhaust fan (3) is blower fan at the uniform velocity, when detection components (5) detects indoor polluted gas content lower than preset value, Control Component (4) is controlled air intake blower fan (2) speedup, makes intake be greater than exhaust air rate; When detection components (5) detects indoor polluted gas content higher than preset value, Control Component (4) is controlled air intake blower fan (2) and is slowed down, and makes intake be less than exhaust air rate.
3. indoor fresh air purification method according to claim 1, it is characterized in that: described air intake blower fan (2) is blower fan at the uniform velocity, described exhaust fan (3) is the adjustable speed blower fan, when detection components (5) detects indoor polluted gas content lower than preset value, Control Component (4) is controlled exhaust fan (3) and is slowed down, and makes exhaust air rate be less than intake; When detection components (5) detects indoor polluted gas content higher than preset value, Control Component (4) is controlled exhaust fan (3) speedup, makes exhaust air rate be greater than intake.
4. indoor fresh air purification method according to claim 1, it is characterized in that: described air intake blower fan (2) and exhaust fan (3) are the adjustable speed blower fan, when detection components (5) detects indoor polluted gas content lower than preset value, Control Component (4) controls air intake blower fan (2) speedup or/and exhaust fan (3) slows down, and makes intake be greater than exhaust air rate; When detection components (5) detects indoor polluted gas content higher than preset value, Control Component (4) is controlled air intake blower fan (2) and is slowed down or/and exhaust fan (3) speedup makes intake be less than exhaust air rate.
5. the indoor fresh air cleaning system for indoor fresh air purification method as described in claim 1 to 4 any one, comprise air filter machine (1), for the indoor air intake blower fan (2) of air suction after air filter machine (1) is filtered, for room air is drawn to outdoor exhaust fan (3), it is characterized in that: also comprise Control Component (4) and for detection of the detection components (5) of indoor polluted gas content, in described air intake blower fan (2) and exhaust fan (3), at least one is the adjustable speed blower fan, described Control Component (4) according to the detection signal sending controling instruction of detection components (5) to the adjustable speed blower fan to control intake or/and exhaust air rate, the conditioning chamber inside and outside differential pressure.
6. indoor fresh air cleaning system according to claim 5, it is characterized in that: described adjustable speed blower fan is stepless speed regulating blower fan.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833001A (en) * | 2015-03-18 | 2015-08-12 | 北京金鼎达科技发展有限公司 | Intelligent fresh air and indoor air synchronous purification equipment and intelligent fresh air and indoor air synchronous purification method |
| CN106338124A (en) * | 2015-07-10 | 2017-01-18 | 青岛中集特种冷藏设备有限公司 | Regulation control system for micro-environment in refrigerating container and refrigerating container |
| CN106403020A (en) * | 2016-08-29 | 2017-02-15 | 广东遂联智能装备制造有限公司 | Combined type indoor air treatment device and using method thereof |
| CN107355881A (en) * | 2017-08-25 | 2017-11-17 | 山西彩云归科技有限公司 | Indoor air purification method and device |
| CN107702286A (en) * | 2017-10-02 | 2018-02-16 | 广东美的制冷设备有限公司 | New blower fan and air conditioning linkend system and its control method, device and storage medium |
| CN108404600A (en) * | 2018-02-26 | 2018-08-17 | 浙江城建煤气热电设计院有限公司 | Suitable for odorant of fuel gases anti-leak negative pressure integrating device and its processing method |
| CN108887374A (en) * | 2018-08-31 | 2018-11-27 | 山东商业职业技术学院 | A kind of nano-photo catalytic freshness preserving equipment and control method |
| CN109827300A (en) * | 2018-12-27 | 2019-05-31 | 皓庭(唐山）环境科技有限公司 | The new blower of mixed wind ratio and specific purpose tool and adjusting method inside and outside adjustable chamber |
| CN109838864A (en) * | 2017-11-28 | 2019-06-04 | 山西彩云归科技有限公司 | A kind of normal pressure is without water conservancy diversion fresh air system in piping chamber |
| CN109838863A (en) * | 2017-11-28 | 2019-06-04 | 山西彩云归科技有限公司 | A kind of dynamic indoor pressure regulating system |
| CN111765553A (en) * | 2020-06-17 | 2020-10-13 | 卢利华 | Air epidemic prevention and purification system based on one-way wall-mounted fresh air machine |
| CN112303858A (en) * | 2020-10-31 | 2021-02-02 | 山东驭康医疗科技有限公司 | Indoor micro-positive pressure control method |
| CN113000077A (en) * | 2021-01-26 | 2021-06-22 | 珠海格力电器股份有限公司 | Negative pressure control method, air treatment equipment and biological safety protection three-level laboratory |
| CN113566386A (en) * | 2021-07-13 | 2021-10-29 | 广州云山技术有限公司 | Indoor fresh air control method capable of dynamically regulating pressure |
| CN113669881A (en) * | 2021-08-25 | 2021-11-19 | 海尔(深圳)研发有限责任公司 | Method and device for controlling fresh air machine and intelligent fresh air machine |
| CN114777310A (en) * | 2022-01-24 | 2022-07-22 | 艾欧史密斯(中国)热水器有限公司 | Air system and control method and controller thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104833001B (en) * | 2015-03-18 | 2018-05-01 | 北京金鼎达科技发展有限公司 | A kind of intelligent fresh air and room air synchronous purification device and method |
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| CN106338124A (en) * | 2015-07-10 | 2017-01-18 | 青岛中集特种冷藏设备有限公司 | Regulation control system for micro-environment in refrigerating container and refrigerating container |
| CN106403020A (en) * | 2016-08-29 | 2017-02-15 | 广东遂联智能装备制造有限公司 | Combined type indoor air treatment device and using method thereof |
| CN107355881A (en) * | 2017-08-25 | 2017-11-17 | 山西彩云归科技有限公司 | Indoor air purification method and device |
| CN107702286A (en) * | 2017-10-02 | 2018-02-16 | 广东美的制冷设备有限公司 | New blower fan and air conditioning linkend system and its control method, device and storage medium |
| CN109838863A (en) * | 2017-11-28 | 2019-06-04 | 山西彩云归科技有限公司 | A kind of dynamic indoor pressure regulating system |
| CN109838864A (en) * | 2017-11-28 | 2019-06-04 | 山西彩云归科技有限公司 | A kind of normal pressure is without water conservancy diversion fresh air system in piping chamber |
| CN108404600A (en) * | 2018-02-26 | 2018-08-17 | 浙江城建煤气热电设计院有限公司 | Suitable for odorant of fuel gases anti-leak negative pressure integrating device and its processing method |
| CN108887374A (en) * | 2018-08-31 | 2018-11-27 | 山东商业职业技术学院 | A kind of nano-photo catalytic freshness preserving equipment and control method |
| CN109827300A (en) * | 2018-12-27 | 2019-05-31 | 皓庭(唐山）环境科技有限公司 | The new blower of mixed wind ratio and specific purpose tool and adjusting method inside and outside adjustable chamber |
| CN111765553A (en) * | 2020-06-17 | 2020-10-13 | 卢利华 | Air epidemic prevention and purification system based on one-way wall-mounted fresh air machine |
| CN112303858A (en) * | 2020-10-31 | 2021-02-02 | 山东驭康医疗科技有限公司 | Indoor micro-positive pressure control method |
| CN112303858B (en) * | 2020-10-31 | 2022-02-25 | 山东驭康医疗科技有限公司 | Indoor micro-positive pressure control method |
| CN113000077A (en) * | 2021-01-26 | 2021-06-22 | 珠海格力电器股份有限公司 | Negative pressure control method, air treatment equipment and biological safety protection three-level laboratory |
| CN113566386A (en) * | 2021-07-13 | 2021-10-29 | 广州云山技术有限公司 | Indoor fresh air control method capable of dynamically regulating pressure |
| CN113669881A (en) * | 2021-08-25 | 2021-11-19 | 海尔(深圳)研发有限责任公司 | Method and device for controlling fresh air machine and intelligent fresh air machine |
| WO2023024574A1 (en) * | 2021-08-25 | 2023-03-02 | 海尔(深圳)研发有限责任公司 | Method and apparatus for controlling fresh air blower and smart fresh air blower |
| CN114777310A (en) * | 2022-01-24 | 2022-07-22 | 艾欧史密斯(中国)热水器有限公司 | Air system and control method and controller thereof |
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