CN103499124A - Method and system for purifying indoor fresh air - Google Patents

Method and system for purifying indoor fresh air Download PDF

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Publication number
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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CN
China
Prior art keywords
air
indoor
blower fan
fan
exhaust
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CN201310490119.7A
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Chinese (zh)
Inventor
戴若夫
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戴若夫
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Priority to CN201310490119.7A priority Critical patent/CN103499124A/en
Publication of CN103499124A publication Critical patent/CN103499124A/en

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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

Indoor fresh air purification method and system

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.
CN201310490119.7A 2013-10-18 2013-10-18 Method and system for purifying indoor fresh air CN103499124A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
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
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2732906Y (en) * 2004-09-16 2005-10-12 吴林元 Assembling clean positive-negative pressure patients' room
CN102135313A (en) * 2010-01-22 2011-07-27 乐金电子(天津)电器有限公司 Total heat exchanger
CN102628607A (en) * 2012-04-20 2012-08-08 高国辉 Indoor fresh air purifying method and device
CN202419845U (en) * 2011-11-04 2012-09-05 刘道颖 Window type indoor fresh air supply device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2732906Y (en) * 2004-09-16 2005-10-12 吴林元 Assembling clean positive-negative pressure patients' room
CN102135313A (en) * 2010-01-22 2011-07-27 乐金电子(天津)电器有限公司 Total heat exchanger
CN202419845U (en) * 2011-11-04 2012-09-05 刘道颖 Window type indoor fresh air supply device
CN102628607A (en) * 2012-04-20 2012-08-08 高国辉 Indoor fresh air purifying method and device

Cited By (5)

* Cited by examiner, † Cited by third party
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
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
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
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

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Effective date of registration: 20151110

Address after: 201802 Shanghai City, Jiading District Zhong Ren Lu B No. 399 room 1210

Applicant after: The intelligent technology (Shanghai) Co., Ltd.

Address before: 410205 Hunan Xicheng Huaxing science and Technology Development Co., Ltd., Changsha, Yuelu District, Hunan Province, 888, azalea Road, China

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Application publication date: 20140108

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