CN102538120A - Safe escape system of enclosed airflow channel at L-shaped building member edge - Google Patents
Safe escape system of enclosed airflow channel at L-shaped building member edge Download PDFInfo
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- CN102538120A CN102538120A CN2011104153943A CN201110415394A CN102538120A CN 102538120 A CN102538120 A CN 102538120A CN 2011104153943 A CN2011104153943 A CN 2011104153943A CN 201110415394 A CN201110415394 A CN 201110415394A CN 102538120 A CN102538120 A CN 102538120A
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Abstract
The invention discloses a safe escape system of an enclosed airflow channel at an L-shaped building member edge. The escape system comprises an L-shaped first static pressure box and an L-shaped second static pressure box; the first static pressure box and the second static pressure box are opposite to each other in the vertical direction and are arranged in parallel; the first static pressure box and the second static pressure box are communicated by a ventilating pipeline; the ventilating pipeline is provided with an air inlet connected with a blower; and the opposite sides of the first static pressure box and the second static pressure box are provided with a first nozzle and a third nozzle as well as a second nozzle and a fourth nozzle, which blow to each other in pairs and form a jet flow region and a positive pressure region for effectively preventing smoke from entering a safe region. According to the unique design of the safe escape system of the enclosed airflow channel at the L-shaped building member edge, four groups of airflows colliding with one another can be produced; a piston flow is produced by the collision among the airflows to drive away the smoke in a special region, so that a safe and clean channel is formed at the L-shaped building member edge and finally, a clean and safe survival way is created for the escaping of staff.
Description
Technical field
The present invention relates to a kind of personnel escape system, relate in particular to a kind of L type building element limit portion air-flow closed channel security escape system.
Background technology
After taking place, fire can produce a large amount of flue gases, and the main cause of death of high-temperature flue gas when being breaking out of fire.Because flue gas is higher than environment temperature, the relative air of its density will be little.Compare less smoke density with surrounding air and can produce buoyancy, cause flue gas to move up.When flue gas moves upward when running into ceiling, because the flue gas of back contact ceiling contacts the flue gas of ceiling before can pushing.This has just caused flue gas to move horizontally along ceiling, and research shows that moving horizontally of this flue gas is breakneck, because it can take flue gas to each place of building element.
Research shows that for building element or tier building owing to the accumulation of flue gas in top of space, the flue gas height can constantly reduce.This will compress personnel escape's space largely, referring to Fig. 1.Personnel in this can cause building are difficult to escape.Thereby cause great personnel's property loss.If after fire takes place, can in building, form a zone clean, that low temperature does not promptly have flue gas yet through various technological means, will make things convenient for the personnel escape largely.The personal security of improvement after fire takes place.Thereby reduce personnel's property loss to greatest extent.
Correlative study shows, has no eliminating that a kind of smoke control system can 100% at present because the caused fire smoke of fire.Existing building element fume-resisting system mainly is employed in the mode that building top is provided with the smoke evacuation air port and discharges fume, thereby the flue gas in the building is diluted, thereby reduces indoor flue gas concentration, but at present there is following problem in prior art:
(1) flue gas dilution is not whole eliminatings, still have the flue gas of the overwhelming majority to be present in the building, and this part flue gas can cause personnel's property loss equally.
(2) the flue gas dilution effect is not directly to depend on the smoke exhaust fan watt level; Because the effect of smoke exhaust fan draft; In building, form negative pressure, promptly the building internal pressure is bigger than outdoor pressure, and high-power in the case smoke exhaust fan also can't be extracted flue gas out fully in building.
The mode technical disadvantages of discharging fume through the smoke evacuation air port merely to prior art; The applicant has applied for a patent of invention in 2010; Its name be called a kind of stairwell fume-resisting system (number of patent application: 201010580513.6) improve existing, the applicant is in line with the scientific idea of " stifled not as dredging ", through six independently " jet " spout produce and form the fluerics that liquidates; Thereby effectively stoped the entering of flue gas, finally reached the effect of putting cigarette.
Along with the further research of applicant to this problem, the applicant finds that also there is following technological deficiency in said system:
(1) though can stop flue gas to get into the protection zone through " jet " spout in first to file; But because flue gas has turbulance, random fluctuation property; This makes flue gas itself vary with respect to each spout air-out speed; Thereby cause this stairwell fume-resisting system to flue gas stop only 70%-80% (percent by volume) of rate, therefore remaining 20%-30% (percent by volume) flue gas can get into the Smoke prevention protection zone of this patent.
(2) can't get rid of process " jet " spout in first to file and hit the flue gas of fluerics, on the contrary, because up and down a plurality of efflux nozzle effect meeting is quickened through hitting the diffusion of fluerics flue gas.
(3) because can't be to getting rid of through the flue gas of head-on collision fluerics in first to file, so its main purpose of design be to strengthen the barrier effectiveness of fume-resisting system to flue gas.Be provided with three pairs of six spouts altogether at first to file fume-resisting system efflux nozzle, we find the research practice through the later stage, initial outlay fund, manufacture difficulty and operating cost in the technological improvement design increase system of first to file.
Summary of the invention
Defective or deficiency to prior art; The object of the present invention is to provide a kind of L type building element limit portion air-flow closed channel security escape system; With when the breaking out of fire, effectively stop flue gas to spread, but the no cigarette channel of one escape unharmed is provided for wrecked personnel toward L type building element limit portion.
In order to realize above-mentioned technical purpose, the present invention adopts as following technical scheme is achieved:
A kind of L type building element limit portion air-flow closed channel security escape system is characterized in that:
Comprise L type first plenum chamber and L type second plenum chamber, first plenum chamber and second plenum chamber are connected through ventilation shaft between first plenum chamber and second plenum chamber up and down relatively and laterally arrange, and ventilation shaft is provided with air inlet; The face relative with second plenum chamber of said first plenum chamber is provided with first spout and second spout, and the outside at the first plenum chamber turning is provided with the 5th spout, and first spout is adjacent with the 5th spout; The face relative with first plenum chamber of said second plenum chamber is provided with the 3rd spout and the 4th spout; Wherein: first spout and the 3rd spout are symmetrical set up and down; The air-out of first spout towards and vertical direction between angle be 1 °～5 °; The air-out of the 3rd spout towards and vertical direction between angle be 1 °～5 °, and the air-out of first spout towards with vertical direction between angle and the 3rd spout air-out towards and vertical direction between angle identical; The air-out of the 5th spout towards the air-out of, first spout towards with the air-out of the 3rd spout towards intersecting at the same line; Second spout and the 4th spout are oppositely arranged up and down, the air-out of second spout towards with the air-out of the 4th spout towards being vertical direction and both are relative.
Other technologies of the present invention are characterized as:
Described second spout and the 4th spout place all are equipped with flaring type spout, and the area ratio of flaring type spout exit and flaring type spout porch is 5 to 1.
The area in the said first spout exit is identical with the area in the 3rd spout exit, and the area in said flaring type spout exit is 5 to 1 with the area ratio in the first spout exit.
Fore-and-aft distance between said first spout and the 3rd spout is smaller or equal to 3m, and the fore-and-aft distance between second spout and the 4th spout is smaller or equal to 3m.
The unique design of security escape system of the present invention can produce two groups of air streams of mutual head-on collision.Relative air port ejection high velocity air through being positioned at plenum chamber limit portion forms the fluerics to blowing, to stop the entering of flue gas.Adopt simultaneously and be positioned at the inner relative air port ejection low speed flow of plenum chamber blowing the formation zone of positive pressure; With " backing " as the Smoke prevention of fluerics, with the increase system to flue gas stop rate in will get rid of because of the flue gas that the turbulance effect get in the flue gas protection zone.
The present invention has following advantage:
(1) flue gas that gets in this zone can effectively be got rid of owing to the effect of zone of positive pressure by system of the present invention, rather than only stops flue gas to get into, and its flue gas stops that rate is near 100%.
(2) system of the present invention does not account for architectural volume in actual installation, and the parts that when the personnel escape, also do not add stop escape.
(3) system cost of the present invention is low, and system is simple, and the installation process is simple.
Description of drawings
Fig. 1 (a1) and Fig. 1 (a2) are respectively fire when back 60 seconds and 180 seconds take place, the flue gas concentration distribution schematic diagram in the L type building element on the longitudinal section, burning things which may cause a fire disaster 15m place;
Fig. 1 (b1) and Fig. 1 (b2) are respectively fire when back 60 seconds and 180 seconds take place, the flue gas concentration distribution schematic diagram in the L type building element on the longitudinal section, burning things which may cause a fire disaster 10m place;
Fig. 1 (c1) and Fig. 1 (c2) are respectively fire when back 60 seconds and 180 seconds take place, the flue gas concentration distribution schematic diagram in the L type building element on the longitudinal section, burning things which may cause a fire disaster 5m place;
Fig. 2 is the structural representation of security escape system of the present invention;
Fig. 3 (a) is the A-A cutaway view of Fig. 2, and Fig. 3 (b) is the B-B cutaway view of Fig. 2;
Fig. 4 exports for flaring type spout and inlet area is analyzed sketch map than calculation optimization;
Fig. 5 is up and down relatively between the spout under the different fore-and-aft distance, the flue gas concentration sketch map in the Smoke prevention protection zone;
Fig. 6 is a L type building element of the present invention limit portion air-flow closed channel security escape system air-out direction sketch map;
Fig. 7 is that sketch map is analyzed in the optimization of two nozzle outlet air supply velocity ratios on the same plenum chamber of the present invention;
Fig. 8 (a1) and Fig. 8 (a2) are respectively fire when back 60 seconds and 180 seconds take place, and the flue gas concentration distribution schematic diagram on the longitudinal section, burning things which may cause a fire disaster 15m place is installed in the L type building element after the system of the present invention;
Fig. 8 (b1) and Fig. 8 (b2) are respectively fire when back 60 seconds and 180 seconds take place, and the flue gas concentration distribution schematic diagram on the longitudinal section, burning things which may cause a fire disaster 10m place is installed in the L type building element after the system of the present invention;
Fig. 8 (c1) and Fig. 8 (c2) are respectively fire when back 60 seconds and 180 seconds take place, and the flue gas concentration distribution schematic diagram on the longitudinal section, burning things which may cause a fire disaster 5m place is installed in the L type building element after the system of the present invention;
After Fig. 8 (d) installed system of the present invention, 2m highly located the flue gas concentration distribution schematic diagram on the cross section apart from ground when fire took place back 240 seconds;
Fig. 9 is under the different angles with vertical direction of spout, and fume-resisting system stops the rate sketch map to flue gas;
Figure 10 is the flue gas concentration distribution schematic diagram in first to file " stairwell fume-resisting system (201010580513.6) ";
Figure 11 is the application and flue gas concentration velocity field contrast sketch map in first to file " stairwell fume-resisting system (201010580513.6) ".
Do explanation in further detail below in conjunction with the accompanying drawing specific embodiments of the invention.
The specific embodiment
L type building element among the present invention refers to that interior construction spacing constitutes element, like L type Zhongting, and L type corridor, L type platform etc.
The present invention has been equivalent in building, open up a safety, free of contamination, low temperature, that visibility is high personnel escape's passage; The validity of this passage and fire intensity, fire location have nothing to do, thereby have guaranteed personnel's the security of the lives and property to greatest extent.When fire took place, security escape system of the present invention can form clean a, low temperature, smokeless zone through scientific and reasonable technological means in building.
Like Fig. 2, shown in Figure 3; L type building element of the present invention limit portion air-flow closed channel security escape system comprises L type first plenum chamber 1 and L type second plenum chamber 5; First plenum chamber 1 and second plenum chamber 5 are up and down relatively and laterally arrange; And be connected through ventilation shaft 8 between the two, air inlet 9 places that are provided with on the ventilation shaft 8 are connected with blower fan; First plenum chamber 1 be provided with first spout 3 and second spout 4 with second plenum chamber, 5 relative faces; The outside at first plenum chamber, 1 turning is provided with the 5th spout 2; First spout 3 is adjacent with the 5th spout 2, second plenum chamber 5 be provided with the 3rd spout 6 and the 4th spout 7 with first plenum chamber, 1 relative face; Wherein, first spout 3 and the 3rd spout 6 are symmetrical set up and down, and second spout 4 and the 4th spout 7 are oppositely arranged up and down; The air-out of first spout 3 towards and vertical direction between angle be 1 °～5 °; The air-out of the 3rd spout 6 towards and vertical direction between angle be 1 °～5 °; The air-out of first spout 3 towards with vertical direction between angle and the 3rd spout 6 air-out towards and vertical direction between angle identical; The air-out of the 5th spout 2 towards the air-out of, first spout 3 towards with the air-out of the 3rd spout 6 towards intersecting at the same line; And the air-out of the 5th spout 2 towards the air-out of, first spout 3 towards with the air-out of the 3rd spout 6 towards all towards the outside of L type building element, the air-out of second spout 4 towards with the air-out of the 4th spout 7 towards being vertical direction and both are relative.
Fore-and-aft distance between first spout 3 and the 3rd spout 6 is smaller or equal to 3m, and the fore-and-aft distance between second spout 4 and the 4th spout 7 is smaller or equal to 3m.When air quantity one regularly, the fore-and-aft distance between the spout is crossed the jet that conference causes this spout to spray and can not be clashed, thereby can not form fluerics and zone of positive pressure, can not effectively get rid of flue gas then.Fig. 5 representes along with the increasing of spout longitudinal pitch and causes the flue gas in the Smoke prevention protection zone to change.Can find out that the flue gas concentration behind spacing 3m obviously increases.So in this application, get longitudinal pitch between spout smaller or equal to 3m, the distance of this scope can guarantee the exit flow collision, and then guarantee the formation that zone of positive pressure and jet go, finally effective discharge flue gas.
When fire takes place; The outer clean air of blower fan suction chamber is sent into first plenum chamber 1 and second plenum chamber 5 through ventilation shaft; Behind plenum chamber; The dynamic pressure of the air in the ventilation shaft changes static pressure into, makes that air is outside to member from first spout 2, the 3rd spout 4 and the 5th spout 7 rows with certain relative position relation, enters in the no cigarette channel from second spout 3 and the 4th spout 6, effectively disperses the flue gas of top of building.
Analyze theoretically, the wind of any direction can resolve into the stack of the wind of the directions X, Y direction and the Z direction that vary in size according to the vector principle, as follows:
Wind speed WS1 (x, y, z)=u1 (x) i+v1 (y) j+w1 (z) k
Wind speed WS2 (x, y, z)=u2 (x) i+v2 (y) j+w2 (z) k
In the formula: u1 (x), u2 (x) be the velocity function of x direction respectively, and v1 (y), v2 (y) represent the velocity function of y direction, and w1 (z), w2 (z) represent the velocity function of z direction, and i is that x direction footmark, j are that y direction footmark, k are z direction footmark;
After wind speed WS1 and the WS2 stack be:
WS3(x，y，z)＝[u1(x)+u2(x)]i+[v1(y)+v2(y)]j+[w1(z)+w2(z)]k
When two differences are come the wind facies collision of flow path direction,, when the velocity magnitude of Y direction equates, have if do not have the velocity component of Z direction:
WS3(x，y，z)＝[u1(x)+u2(x)]i+[v1(y)-v2(y)]j+[0+0]k
＝2×u1(x)i
The wind speed of the collision back vertical direction of the wind comes from the above-mentioned different directions is offset remaining horizontal direction wind speed; So the back of high-speed air flow head-on collision simultaneously is because the excessive loss of momentum of momentum is less relatively with respect to itself entrained momentum; This just makes that dynamic pressure conversion static pressure in upper and lower sides high speed air-out head-on collision back is incomplete; Thereby form to the member movement outside plug-flow, form the mixed zone afterwards.
The present invention is just based on above-mentioned principle; Wherein first spout 3 and the 3rd spout 6 are symmetrical set and all adopt the tilting air-out up and down; The air-out that realizes first spout 3 and the 3rd spout 6 collides, and offsets the vertical velocity component of air-out, the stack horizontal velocity component; And the air-out speed of the two enough can form the air slide of horizontal direction greatly and pass, and stops that flue gas gets into L type member middle part and the upper space of incoming flow flue gas in its sphere of action entrainmented; The present invention simultaneously is oppositely arranged and all adopts vertical air-out through second spout 4 up and down with the 4th spout 7; Second spout 4 and the 4th spout 7 air-out speed are little and be in the head-on collision form; Fluid entrained dynamic pressure or momentum in head-on collision back itself has loss greatly up and down; And the dynamic pressure of this part loss or momentum can be converted into pressure differential, thereby form zone of positive pressure, see Fig. 6.Such first spout 3, the 3rd spout 6 and the 5th spout 2 formed head-on collision jets; Owing to reason with big momentum; Can effectively intercept flue gas and get into the safety zone; Simultaneously second spout 4 with the 4th spout 7 owing to have big malleation, can be effectively with the flue gas pressure of passing first spout 3, the 3rd spout 6 and the 5th spout 2 fluerics that forms also to the safety zone, thereby finally played the effect of formation escape way.
In addition; Because the air-out meeting is collided with the turning wall, causes the loss of momentum, thereby reduce the effect that flue gas is dredged; Therefore add the 5th spout 2 in passage corner; And the air-out of the 5th spout 2 towards with the air-out of first spout 3 and the 3rd spout 6 towards intersecting at a line, will increase the air-out momentum of corner like this, form and have the more piston flow of high thrust; Why prevent that flue gas from getting in the safety zone, be because flue gas is to concentrate on the building upper space because of the buoyancy major part in upper design only.Thereby finally reach the personnel's that in the diffusion of safety zone, do not take at the prevention flue gas escape space, and create the interval purpose of escape of a relative clean in the flue gas region covered.
Can regulate the air-out speed of the spout of sharing same wind regime through the area size of controlling the spout exit; And the air port size is inversely proportional to its wind speed size; First spout 3 and the 3rd spout 6 are in the outer part among the present invention; It needs the air-out of higher wind to form a large amount of flue gas that offset the fluerics, and the air-out of the low wind speed of the need of second spout 4 and the 4th spout 7 forms zone of positive pressure, so second spout 4 and the 4th spout 7 are flaring property spout; Make second spout 4 and the 4th spout 7 place exit area exit area greater than first spout 3 and the 3rd spout 6, first spout 3 and the 3rd spout 6 wind speed are bigger than the wind speed of second spout 4 and the 4th spout 7;
The wind speed of second spout 4 and the 4th spout 7 is difficult for excessive and too small simultaneously; Can influence personnel escape's speed when excessive and give discomfort; Just can not guarantee fully when too small that flue gas is isolated in outside the zone of positive pressure, be 5 to 1 based on the area ratio of flaring type spout exit among this present invention and porch.And under this area ratio; Air-out head-on collision back momentum is subdued very fast; Its most of momentum all can be converted into pressure; And then can guarantee that enough air-out dynamic pressure meetings change static pressure into, promptly the momentum of the overwhelming majority can change air pressure into and form zone of positive pressure, so that the flue gas in the admission passage is discharged the place of safety; First spout 3 and the 3rd spout 6 are tiny spout with respect to second spout 4 and the 4th spout 7, and its air-out speed is high, and momentum is big, still have big momentum after the air-out head-on collision, can form fluerics as shown in Figure 6, stop that flue gas gets into the safety zone.
In addition, research shows that under the certain situation of total blast volume, first spout, 3 air supply velocities strengthen, and then second spout, 4 air supply velocities reduce, otherwise first spout, 3 speed reduce, and then second spout, 4 air supply velocities increase.When first spout, 3 air supply velocities strengthened, " shielding " of 3 pairs of flue gases of first spout effect will be strengthened, and second spout, 4 air supply velocities reduce, and then the effect of driveing to flue gas will reduce.Otherwise " shielding " effect of 3 pairs of flue gases of first spout will reduce, and the effect of driveing of 4 pairs of flue gases of second spout will be strengthened.So the air supply velocity ratio of first spout 3 and second spout 4 has an optimal value, research shows that when the air supply velocity ratio of first spout 3 and second spout 4 reached 5: 1, the C0 concentration in the Smoke prevention protection zone was minimum, sees Fig. 7.In like manner, the air supply velocity that can know the 3rd spout 6 and the 4th spout 7 also is 5: 1 than optimal value.Can be through the air supply velocity ratio in the hope of first spout 3; Second spout 4; The 3rd spout 6; The air supply areas of the 4th spout 7, promptly the area in flaring type spout exit is 5 to 1 with the area ratio in first spout, 3 exits, the area in flaring type spout exit is 5 to 1 with the area ratio in the 3rd spout 6 exits.And then can confirm the area ratio in each relevant spout exit.
In conjunction with Fig. 9, research shows that the air-out direction and the angle between the vertical direction of first spout 3, the 3rd spout 6, the 5th spout 2 is excessive, and then to depart from air supply position far away excessively for convergent point, and flue gas leaks out to zone of positive pressure easily.If angle is too small, then too small towards the wind speed of horizontal direction, cause the flue gas seepage equally easily.Through the discovering of applicant, when the angle of the air-out direction of first spout 3, the 3rd spout 6, the 5th spout 2 and vertical direction was between 1 °～5 °, native system can prevent flue gas entering place of safety under good air-supply effect.
At first, even second spout 4 and the 4th spout 7 can form zone of positive pressure, because the pulsating nature of flue gas, partial fume can constantly get into zone of positive pressure, is constantly extruded by the pressure in the zone of positive pressure again.This will form a dynamic equilibrium, and also promptly, the flue gas that has that does not stop gets into, and the not all right flue gas that has is excluded.This just causes having all the time in the Smoke prevention protection zone flue gas to exist, and this part flue gas can cause personnel's property loss.After adding first spout 3 and the 3rd spout 6 formed fluericses, shielding action can be played to the flue gas of wanting to get in the Smoke prevention protection zone in the fluerics.Isolated most of flue gas, and the flue gas of slipping through the net finally can be got rid of by the malleation in the zone of positive pressure.
Secondly, though the fluerics can effectively shield flue gas, because the effect of flue gas pulsating nature, its shield effectiveness is not 100%, and this just makes part of smoke directly to get in the Smoke prevention protection zone.
Generally speaking, the fluerics is equivalent to the gate of zone of positive pressure, effectively gets rid of most flue gas earlier, and zone of positive pressure then is equivalent to the strong backing of fluerics, gets rid of because a small amount of extension that the flue gas pulsating nature is got into.
When security escape system of the present invention is installed under construction wherein first plenum chamber and second plenum chamber respectively concealed installation on the furred ceiling and floor of L type building element limit portion.
Embodiment:
Below provide specific embodiment of the present invention, need to prove that the present invention is not limited to present embodiment, all equivalents of on present techniques scheme basis, doing all fall into protection scope of the present invention.
Defer to technique scheme, with reference to figure 2, Fig. 3,
Wherein the size of first plenum chamber and second plenum chamber is 30m * 0.6m * 0.4m, and ventilation shaft 8 calibers are 0.3m * 0.3m;
The flaring type spout exit area that install in second spout, 4 places is 5: 1 with first spout, 3 exit area ratios, and under the same air-supply source, the air supply velocity of the two ratio is 1: 5 accordingly.Then working as first spout, 3 areas is 30m * 0.1m, and then second spout, 4 areas are 30m * 0.5m, and in like manner, the 3rd spout 6 areas are 30m * 0.1m, and then the 4th spout 7 areas are 30m * 0.5m;
Total air output of whole system is 12m
3/ s, first spout 3 and the 3rd spout 6 air supply velocities are 1m/s, air output is 3m
3/ s, second spout 4 and the 4th spout 7 air supply velocities are 0.2m/s, air output is for also being 3m
3/ s.Above-mentioned second spout 4 is vertical with plenum chamber with the 4th spout 7, and the air-out direction of first spout 3 and the 3rd spout 6 is identical with the angle of vertical direction and be 3 °.
It below is contrast experiment's effect that the inventor provides about the application and 201010580513.6 patent applications.Experiment is under identical exhaust smoke level, equal static pressure case size, identical fire location and identical rate of heat release condition, to carry out.
(1) from the rate that stops to flue gas; Because the present invention has got into the flue gas in Smoke prevention district and has stopped that flue gas gets into through the effective eliminating of cooperatively interacting of zone of positive pressure and fluerics; See Fig. 8, this compares 201010580513.6 patent applications can only stop that flue gas more has superiority.Shown in figure 10, fail to form zone of positive pressure in the system in 201010580513.6 applications, and the zone of positive pressure of system of the present invention can more effectively stop flue gas, keeps lower flue gas concentration in the escape zone; Simultaneously; Shown in figure 11, along with the passing of time on fire, because of the increasing of flue gas turbulance; 201010580513.6 the flue gas that gets in the Smoke prevention zone in the system of application increases; Flue gas concentration by the time strengthen, and the flue gas concentration the Smoke prevention zone in maintains a steady state value in the application's the system, and is starkly lower than the flue gas concentration in 201010580513.6 systems that apply for.
(2) say from the cost lattice; The application's main spout number has four; There are six spouts in the system that is less than 201010580513.6 applications; This just makes the application's air output under equal conditions lack 30% than original system, and then the required blower fan of whole system also can become present ting model blower fan from original big model, and the initial cost of total system can reduce more than 20%.Say from operational efficiency, and because air quantity requires forr a short time, so the efficient during operation is higher, the power consumption during the system operation also reduces relatively.
Claims (4)
1. L type building element limit portion air-flow closed channel security escape system is characterized in that:
Comprise first plenum chamber (1) of L type and second plenum chamber (5) of L type; First plenum chamber (1) and second plenum chamber (5) are up and down relatively and laterally arrange; Be connected through ventilation shaft (8) between first plenum chamber (1) and second plenum chamber (5), ventilation shaft (8) is provided with air inlet (9);
Said first plenum chamber (1) be provided with first spout (3) and second spout (4) with the relative face of second plenum chamber (5), the outside at first plenum chamber (1) turning is provided with the 5th spout (2), first spout (3) is adjacent with the 5th spout (2);
Said second plenum chamber (5) be provided with the 3rd spout (6) and the 4th spout (7) with the relative face of first plenum chamber (1);
Wherein:
First spout (3) is symmetrical set up and down with the 3rd spout (6);
The air-out of first spout (3) towards and vertical direction between angle be 1 °～5 °; The air-out of the 3rd spout (6) towards and vertical direction between angle be 1 °～5 °, and the air-out of first spout (3) towards with vertical direction between angle and the 3rd spout (6) air-out towards and vertical direction between angle identical;
The air-out of the 5th spout (2) towards the air-out of, first spout (3) towards with the air-out of the 3rd spout (6) towards intersecting at the same line;
Second spout (4) and the 4th spout (7) are oppositely arranged up and down, the air-out of second spout (4) towards with the air-out of the 4th spout (7) towards being vertical direction and both are relative.
2. security escape system as claimed in claim 1 is characterized in that, described second spout (4) and the 4th spout (7) locate all to be equipped with flaring type spout, and the area ratio of flaring type spout exit and flaring type spout porch is 5 to 1.
3. security escape system as claimed in claim 2; It is characterized in that; The area in said first spout (3) exit is identical with the area in the 3rd spout (6) exit, and the area in said flaring type spout exit and the area ratio in first spout (3) exit are 5 to 1.
4. security escape system as claimed in claim 1 is characterized in that, the fore-and-aft distance between said first spout (3) and the 3rd spout (6) is smaller or equal to 3m, and the fore-and-aft distance between second spout (4) and the 4th spout (7) is smaller or equal to 3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110415394 CN102538120B (en) | 2011-12-13 | 2011-12-13 | Safe escape system of enclosed airflow channel at L-shaped building member edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110415394 CN102538120B (en) | 2011-12-13 | 2011-12-13 | Safe escape system of enclosed airflow channel at L-shaped building member edge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102538120A true CN102538120A (en) | 2012-07-04 |
| CN102538120B CN102538120B (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110415394 Active CN102538120B (en) | 2011-12-13 | 2011-12-13 | Safe escape system of enclosed airflow channel at L-shaped building member edge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244172A (en) * | 2013-04-26 | 2013-08-14 | 西安建筑科技大学 | Colliding-jet tunnel fire side escape system |
| CN103244165A (en) * | 2013-04-26 | 2013-08-14 | 西安建筑科技大学 | Collision-type respiratory zone air supply system |
| CN103267335A (en) * | 2013-04-26 | 2013-08-28 | 西安建筑科技大学 | Horizontal and vertical air supply combined fire escape system capable of realizing collision effect in breathing zone and air supply tunnel |
| CN103277135A (en) * | 2013-04-26 | 2013-09-04 | 西安建筑科技大学 | Tunnel fire escape system with breathing zone air supplying and lower portion air supplying combined |
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| CN2194468Y (en) * | 1994-05-21 | 1995-04-12 | 徐振昌 | Multi-function exhausting hood |
| CN1579580A (en) * | 2004-05-21 | 2005-02-16 | 南京工业大学 | Fire smoke-proof air curtain system with additional power |
| CN102003766A (en) * | 2010-12-09 | 2011-04-06 | 西安建筑科技大学 | Smoke protection system for stairwell |
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| CN2194468Y (en) * | 1994-05-21 | 1995-04-12 | 徐振昌 | Multi-function exhausting hood |
| CN1579580A (en) * | 2004-05-21 | 2005-02-16 | 南京工业大学 | Fire smoke-proof air curtain system with additional power |
| CN102003766A (en) * | 2010-12-09 | 2011-04-06 | 西安建筑科技大学 | Smoke protection system for stairwell |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244172A (en) * | 2013-04-26 | 2013-08-14 | 西安建筑科技大学 | Colliding-jet tunnel fire side escape system |
| CN103244165A (en) * | 2013-04-26 | 2013-08-14 | 西安建筑科技大学 | Collision-type respiratory zone air supply system |
| CN103267335A (en) * | 2013-04-26 | 2013-08-28 | 西安建筑科技大学 | Horizontal and vertical air supply combined fire escape system capable of realizing collision effect in breathing zone and air supply tunnel |
| CN103277135A (en) * | 2013-04-26 | 2013-09-04 | 西安建筑科技大学 | Tunnel fire escape system with breathing zone air supplying and lower portion air supplying combined |
| CN103244172B (en) * | 2013-04-26 | 2015-04-15 | 西安建筑科技大学 | Colliding-jet tunnel fire side escape system |
| CN103244165B (en) * | 2013-04-26 | 2015-05-20 | 西安建筑科技大学 | Collision-type respiratory zone air supply system |
| CN103267335B (en) * | 2013-04-26 | 2015-08-19 | 西安建筑科技大学 | Horizontal vertical is blown the respiratory region head-on collision air-supply tunnel fire hazard escape system combined |
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