CN103673223B - A kind of intelligent control method of the VMC based on the early warning of wind pushing air quality - Google Patents

A kind of intelligent control method of the VMC based on the early warning of wind pushing air quality Download PDF

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CN103673223B
CN103673223B CN201310637045.5A CN201310637045A CN103673223B CN 103673223 B CN103673223 B CN 103673223B CN 201310637045 A CN201310637045 A CN 201310637045A CN 103673223 B CN103673223 B CN 103673223B
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concentration
sensor
air
gas concentration
operated valve
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CN103673223A (en
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丁勇
李百战
程丽
喻伟
严雪峰
王晗
高亚锋
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Chongqing University
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Air Conditioning Control Device (AREA)
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Abstract

The invention provides a kind of VMC based on the early warning of wind pushing air quality and intelligent control method, comprise gas concentration lwevel sensor, non-personnel produce pollutant levels sensor group, motor regulated valve, intelligent controller.The present invention utilizes each sensor to detect air-supply and indoor pollutant concentration level, compares and determines that both are good and bad, determine the air quality level of outdoor new wind, thus by certain control program, the open and-shut mode controlling new air valve reaches early warning object.Can be widely used in the concentrated ventilation and air conditioning system of all kinds of large public building, avoid because the inferior IAQ that causes of outdoor New atmosphere quality is poor, but the phenomenon of a large amount of new wind is ceaselessly introduced to building interior, by rational fresh air quantity control, build more healthy and safe indoor architecture environment.

Description

A kind of intelligent control method of the VMC based on the early warning of wind pushing air quality
Technical field
The invention belongs to building ventilation and field of air conditioning, be specifically related to the air-supply early warning technology in concentrated ventilation and air conditioning system.
Background technology
Along with the development of economic society and the generally use of air-conditioning, indoor air quality obtains the extensive concern of people, but the air pollution phenomenon of actual building interior is but more and more serious.Wherein serious outdoor air pollution is the major reason causing this phenomenon.Although Leads to new breeze is intended to utilize relatively clean outdoor air displacement indoor pollution air, is provided in room personnel and breathes required oxygen supply, dilution indoor pollutant, ensure in room personnel's healthiness level.But while Leads to new breeze, also can to a certain amount of pollutant of indoor introducing.Therefore, when outdoor certain or multiple pollutant concentration over-standard, strengthen the pollution that resh air requirement can aggravate room air on the contrary, cause indoor environmental pollution serious.Therefore in these cases, need to judge outdoor New atmosphere quality in time, formulate rational Xingfeng capsule strategy.
The shortcoming of existing aeration device is when outdoor pollutant levels exceed its indoor concentration, and when reducing fresh air supply, system can make the false judgment strengthening new wind on the contrary, causes indoor pollution substrate concentration to continue to rise, causes indoor pollution to aggravate.
Summary of the invention
An object of the present invention is to provide a kind of VMC of simultaneously monitoring indoor-outdoor air quality.
The technical scheme adopted for realizing the object of the invention is such, a kind of VMC based on the early warning of wind pushing air quality, it is characterized in that: comprise the air-conditioner set being arranged on outside, room, and total backwind tube, always ajutage, exhaust duct and unit blast pipe;
The air inlet of described total ajutage is connected with air-conditioner set; The air outlet of described total ajutage is communicated with in room by blowpipe.The air inlet of described fresh wind tube is outside in room, air outlet is connected with air-conditioner set.The air inlet of described total backwind tube is communicated with in room by return air arm.The described air outlet of total backwind tube is connected with the air inlet of the air inlet of exhaust duct and unit blast pipe.The air outlet of described exhaust duct is outside in room.The air outlet of described unit blast pipe is connected with air-conditioner set.
In described total return air pipeline section, concentration of formaldehyde sensor I, nitric oxide concentration sensor I, sulfur dioxide concentration sensor I, TVOC concentration sensor I and gas concentration lwevel sensor are installed.Concentration of formaldehyde sensor II, nitric oxide concentration sensor II, sulfur dioxide concentration sensor II and TVOC concentration sensor II are installed in described total ajutage.In described fresh wind tube, electrically operated valve is installed.
The present invention, owing to having said structure, by comparing the quality obtaining architecture indoor outer air quality, rationally can make early warning and judging and the resh air requirement of reasonable adjusting introducing building interior, to build more healthy and safe indoor environment.
Another object of the present invention is to provide a kind of intelligent early-warning Xingfeng capsule method based on said system.
The technical scheme adopted for realizing the object of the invention is such, comprises the following steps:
1) air-conditioner set is started.Electrically operated valve adjusts to initial opening corresponding to design minimum fresh air requirmente.
2) the upper limit of concentration value of each pollutant is set, i.e. formaldehyde: S 1=0.1mg/m 3; Nitrogen dioxide: S 2=0.24mg/m 3; Sulfur dioxide: S 3=0.50mg/m 3; TVOC:S 4=0.6mg/m 3.
3) described concentration of formaldehyde sensor I records concentration of formaldehyde is C11, it is C12 that nitric oxide concentration sensor I records nitric oxide concentration, it is that to record TVOC concentration be C14 to C13, TVOC concentration sensor I that sulfur dioxide concentration sensor I records sulfur dioxide concentration.Calculate:
I 1 = max ( C 11 S 1 , C 12 S 2 , C 13 S 3 , C 14 S 4 ) ( 1 4 Σ i = 1 4 C 1 i Si ) .
It is C21 that concentration of formaldehyde sensor II records concentration of formaldehyde, and it is C22 that nitric oxide concentration sensor II 1 records nitric oxide concentration, and it is that to record TVOC concentration be C24 to C23, TVOC concentration sensor II 1 that sulfur dioxide concentration sensor II 1 records sulfur dioxide concentration.Calculate:
I 2 = max ( C 21 S 1 , C 22 S 2 , C 23 S 3 , C 24 S 4 , ) ( 1 4 Σ i = 1 4 C 2 i Si ) .
4) I is compared 1and I 2size: if I 1be greater than I 2, enter step 5).If I 1be less than I 2, close electrically operated valve, jump to step 7).
5) gas concentration lwevel sensor is started working, and measures gas concentration lwevel, and point three kinds of situations carry out action:
I is when gas concentration lwevel is greater than 1000ppm, and the aperture of electrically operated valve tunes up 5%;
Ii is when gas concentration lwevel is less than 700ppm, and the aperture of electrically operated valve turns 5% down;
Iii is when gas concentration lwevel is in 700 ~ 1000ppm, and the aperture of electrically operated valve remains unchanged.
After performing the action of this step I, ii or iii, interval time, Δ t, then entered next step.
6) after repeating step 5) n time, step 3 is jumped to).
7) gas concentration lwevel sensor is started working, and measures gas concentration lwevel, carries out action in two kinds of situation:
If when i gas concentration lwevel is greater than 1000ppm, opens electrically operated valve and adjust to initial opening corresponding to described design minimum fresh air requirmente;
If ii gas concentration lwevel is less than 1000ppm, electrically operated valve is closed.
After performing the action of this step I or ii, interval time, Δ t, then entered next step.
8) measure gas concentration lwevel, carry out action in two kinds of situation:
I is when gas concentration lwevel is greater than 1000ppm, and the aperture of electrically operated valve tunes up 5%;
If ii gas concentration lwevel is less than 1000ppm, electrically operated valve continues to keep closed condition.Interval time Δ t.
After performing the action of this step I or ii, interval time, Δ t, then entered next step.
9) after repeating step 8) m time, rebound step 3).
Based on above-mentioned intelligent control method, the present invention has following features:
1, indoor and outdoors air quality is considered
This device achieves to be considered the comprehensive of indoor-outdoor air quality comprehensively, and compare according to the air quality of new wind and return air, decision-making system is run and mode of operation.But not single judgement indoor or outdoors environmental quality and controlling, control decision is more comprehensive properly.
2, more healthy and safe indoor environment is built
The New atmosphere quality of this control device to outdoor introducing judges, by the measurement of concetration to 4 kinds of air pollutants, timely early warning can be accomplished, prevent from occurring system malfunction when outdoor air poor quality and strengthening the phenomenon introducing new wind, provide ensure more reliably for building healthy and safe Building Indoor Environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation in multiple room in an embodiment.
In figure: 1-concentration of formaldehyde sensor I, 2-nitric oxide concentration sensor I, 3-sulfur dioxide concentration sensor I, 4-TVOC concentration sensor I, 5-gas concentration lwevel sensor, 6-concentration of formaldehyde sensor II, 7-nitric oxide concentration sensor II, 8-sulfur dioxide concentration sensor II, 9-TVOC concentration sensor II, 10-controller, 11-air-conditioner set, the total backwind tube of 12-, the total ajutage of 13-, 14-fresh wind tube, 15-exhaust duct, 16-unit blast pipe, 17-room, 18-control room, 19-electrically operated valve.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described, but should not be construed the above-mentioned subject area of the present invention and be only limitted to following embodiment.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, make various replacement and change, all should be included in protection scope of the present invention.
Embodiment 1:
Based on a VMC for wind pushing air quality early warning, comprise the air-conditioner set 11 being arranged on outside, room 17, and total backwind tube 12, always ajutage 13, exhaust duct 15 and unit blast pipe 16.
The air inlet of described total ajutage 13 is connected with air-conditioner set 11.The air outlet of described total ajutage 13 is communicated with in room 17 by blowpipe: see Fig. 1, when only having a room, the air outlet of total ajutage 13 is in room.See Fig. 2, when having multiple room, each room all by blowpipe to indoor feeding air.The air inlet of described fresh wind tube 14 is outside in room 17, air outlet is connected with air-conditioner set 11.The air inlet of described total backwind tube 12 is communicated with in room 17 by return air arm: see Fig. 1, when only having a room, the air inlet of total backwind tube 12 is in room.See Fig. 2, when having multiple room, room air is all discharged by return air arm in each room.The air outlet of described total backwind tube 12 is connected with the air inlet of the air inlet of exhaust duct 15 and unit blast pipe 16.The air outlet of described exhaust duct 15 is outside in room 17.The air outlet of described unit blast pipe 16 is connected with air-conditioner set 11.
In described total return air pipeline section 12, concentration of formaldehyde sensor I 1, nitric oxide concentration sensor I 2, sulfur dioxide concentration sensor I 3, TVOC concentration sensor I 4 and gas concentration lwevel sensor 5 are installed.Concentration of formaldehyde sensor II 6, nitric oxide concentration sensor II 7, sulfur dioxide concentration sensor II 8 and TVOC concentration sensor II 9 are installed in described total ajutage 13.In described fresh wind tube 14, electrically operated valve 19 is installed.
Further, described concentration of formaldehyde sensor I 1, nitric oxide concentration sensor I 2, sulfur dioxide concentration sensor I 3, TVOC concentration sensor I 4, gas concentration lwevel sensor 5, concentration of formaldehyde sensor II 6, the measured value of nitric oxide concentration sensor II 7, sulfur dioxide concentration sensor II 8 and TVOC concentration sensor II 9 is sent to by data wire on the display device that is arranged in control room 18.Further, also comprise controller 10, measure by described gas concentration lwevel sensor 5 carbon dioxide concentration value obtained and pass to controller 10, described electrically operated valve 19 is according to the comparative result corresponding actions of surveying gas concentration lwevel and limit value.
Embodiment 2:
The present embodiment is the intelligent control method based on the VMC based on the early warning of wind pushing air quality described in embodiment 1, it is characterized in that, comprises the following steps:
1) air-conditioner set 11 is started.Electrically operated valve 19 adjusts to initial opening corresponding to design minimum fresh air requirmente, and in embodiment, described initial opening is 10% ~ 20%.
2) the upper limit of concentration value of each pollutant is set, i.e. formaldehyde: S 1=0.1mg/m 3.Nitrogen dioxide: S 2=0.24mg/m 3.Sulfur dioxide: S 3=0.50mg/m 3.TVOC：S 4=0.6mg/m 3。
3) described concentration of formaldehyde sensor I 1 records concentration of formaldehyde is C11, it is C12 that nitric oxide concentration sensor I 2 records nitric oxide concentration, it is that to record TVOC concentration be C14 to C13, TVOC concentration sensor I 4 that sulfur dioxide concentration sensor I 3 records sulfur dioxide concentration.Calculate: I 1 = max ( C 11 S 1 , C 12 S 2 , C 13 S 3 , C 14 S 4 ) ( 1 4 Σ i = 1 4 C 1 i Si ) ;
It is C21 that concentration of formaldehyde sensor II 6 records concentration of formaldehyde, and it is C22 that nitric oxide concentration sensor II 7 records nitric oxide concentration, and it is that to record TVOC concentration be C24 to C23, TVOC concentration sensor II 9 that sulfur dioxide concentration sensor II 8 records sulfur dioxide concentration.Calculate:
I 2 = max ( C 21 S 1 , C 22 S 2 , C 23 S 3 , C 24 S 4 , ) ( 1 4 Σ i = 1 4 C 2 i Si ) ;
4) I is compared 1and I 2size: if I 1be greater than I 2, enter step 5).If I 1be less than I 2, close electrically operated valve 19, jump to step 7).
5) gas concentration lwevel sensor 5 is started working, and measures gas concentration lwevel: when gas concentration lwevel is greater than 1000ppm, the aperture of electrically operated valve 19 tunes up 5%.When gas concentration lwevel is less than 700ppm, the aperture of electrically operated valve 19 turns 5% down.When gas concentration lwevel is in 700 ~ 1000ppm, the aperture of electrically operated valve 19 remains unchanged.Interval time Δ t.In embodiment, Δ t=10 minute.
6) after repeating step 5n time, step 3 is jumped to).In embodiment, n=6.
7) gas concentration lwevel sensor 5 is started working, and measures gas concentration lwevel: if when gas concentration lwevel is greater than 1000ppm, opens electrically operated valve 19 and adjust to initial opening corresponding to described design minimum fresh air requirmente.If gas concentration lwevel is less than 1000ppm, electrically operated valve 19 is closed.Interval time Δ t.
8) gas concentration lwevel is measured: when gas concentration lwevel is greater than 1000ppm, the aperture of electrically operated valve 19 tunes up 5%.If gas concentration lwevel is less than 1000ppm, electrically operated valve 19 continues to keep closed condition.Interval time Δ t.
9) after repeating step 8m time, rebound step 3).In embodiment, m=5.

Claims (1)

1. based on the intelligent control method of the VMC of wind pushing air quality early warning, it is characterized in that: VMC comprises the air-conditioner set (11) being arranged on outside, room (17), and total return air pipeline section (12), always ajutage (13), fresh wind tube (14), exhaust duct (15) and unit blast pipe (16);
The air inlet of described total ajutage (13) is connected with air-conditioner set (11); The air outlet of described total ajutage (13) is communicated with in room (17) by blowpipe; The air inlet of described fresh wind tube (14) is outside in room (17), air outlet is connected with air-conditioner set (11); The air inlet of described total return air pipeline section (12) is communicated with in room (17) by return air arm; The described air outlet of total return air pipeline section (12) is connected with the air inlet of the air inlet of exhaust duct (15) and unit blast pipe (16); The air outlet of described exhaust duct (15) is outside in room (17); The air outlet of described unit blast pipe (16) is connected with air-conditioner set (11);
In described total return air pipeline section (12), concentration of formaldehyde sensor I (1), nitric oxide concentration sensor I (2), sulfur dioxide concentration sensor I (3), TVOC concentration sensor I (4) and gas concentration lwevel sensor (5) are installed; Concentration of formaldehyde sensor II (6), nitric oxide concentration sensor II (7), sulfur dioxide concentration sensor II (8) and TVOC concentration sensor II (9) are installed in described total ajutage (13); Electrically operated valve (19) is installed in described fresh wind tube (14);
Described concentration of formaldehyde sensor I (1), nitric oxide concentration sensor I (2), sulfur dioxide concentration sensor I (3), TVOC concentration sensor I (4), gas concentration lwevel sensor (5), concentration of formaldehyde sensor II (6), nitric oxide concentration sensor II (7), the measured value of sulfur dioxide concentration sensor II (8) and TVOC concentration sensor II (9) is sent on the display device that is arranged in control room (18) by data wire,
Also comprise controller (10), the carbon dioxide concentration value obtained by the measurement of described gas concentration lwevel sensor (5) passes to controller (10), and described electrically operated valve (19) is according to the comparative result corresponding actions of surveying gas concentration lwevel and limit value;
The control method of above-mentioned VMC is adopted to comprise the following steps:
1) air-conditioner set (11) is started; Electrically operated valve (19) adjusts to initial opening corresponding to design minimum fresh air requirmente;
2) the upper limit of concentration value of each pollutant is set, i.e. formaldehyde: S 1=0.1mg/m 3; Nitrogen dioxide: S 2=0.24mg/m 3; Sulfur dioxide: S 3=0.50mg/m 3; TVOC:S 4=0.6mg/m 3;
3) described concentration of formaldehyde sensor I (1) records concentration of formaldehyde is C11, it is C12 that nitric oxide concentration sensor I (2) records nitric oxide concentration, it is that to record TVOC concentration be C14 to C13, TVOC concentration sensor I (4) that sulfur dioxide concentration sensor I (3) records sulfur dioxide concentration; Calculate: I 1 = m a x ( C 11 S 1 , C 12 S 2 , C 13 S 3 , C 14 S 4 ) ( 1 4 Σ i = 1 4 C 1 i S i ) ;
It is C21 that concentration of formaldehyde sensor II (6) records concentration of formaldehyde, it is C22 that nitric oxide concentration sensor II (7) records nitric oxide concentration, it is that to record TVOC concentration be C24 to C23, TVOC concentration sensor II (9) that sulfur dioxide concentration sensor II (8) records sulfur dioxide concentration; Calculate: I 2 = m a x ( C 21 S 1 , C 22 S 2 , C 23 S 3 , C 24 S 4 ) ( 1 4 Σ i = 1 4 C 2 i S i ) ;
4) I is compared 1and I 2size: if I 1be greater than I 2, enter step 5); If I 1be less than I 2, close electrically operated valve (19), jump to step 7);
5) gas concentration lwevel sensor (5) is started working, and measures gas concentration lwevel: when gas concentration lwevel is greater than 1000ppm, the aperture of electrically operated valve (19) tunes up 5%; When gas concentration lwevel is less than 700ppm, the aperture of electrically operated valve (19) turns 5% down; When gas concentration lwevel is in 700 ~ 1000ppm, the aperture of electrically operated valve (19) remains unchanged; Interval time Δ t;
6) step 5 is repeated) after n time, jump to step 3);
7) gas concentration lwevel sensor (5) is started working, and measures gas concentration lwevel: if when gas concentration lwevel is greater than 1000ppm, opens electrically operated valve (19) and adjust to initial opening corresponding to described design minimum fresh air requirmente; If gas concentration lwevel is less than 1000ppm, electrically operated valve (19) is closed; Interval time Δ t;
8) gas concentration lwevel is measured: when gas concentration lwevel is greater than 1000ppm, the aperture of electrically operated valve (19) tunes up 5%; If gas concentration lwevel is less than 1000ppm, electrically operated valve (19) continues to keep closed condition; Interval time Δ t;
9) step 8 is repeated) after m time, rebound step 3).
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CN104456870B (en) * 2014-12-11 2017-01-25 重庆大学 Fresh air and return air adjusting method and device for air-conditioning systems
CN110579001A (en) * 2019-08-12 2019-12-17 安徽美博智能电器有限公司 Control method and device of air conditioner
CN110440384A (en) * 2019-09-09 2019-11-12 江苏碳元绿色建筑科技有限公司 A kind of fresh air treatment system and fresh air processing method
CN111895506B (en) * 2020-07-17 2021-11-23 Tcl空调器(中山)有限公司 Air conditioner fresh air control method and air conditioner
CN115751460A (en) * 2022-12-06 2023-03-07 珠海格力电器股份有限公司 Fresh air conditioner and control method thereof

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