CN103574865A - Flexible air-supply diffuser - Google Patents
Flexible air-supply diffuser Download PDFInfo
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- CN103574865A CN103574865A CN201310540919.5A CN201310540919A CN103574865A CN 103574865 A CN103574865 A CN 103574865A CN 201310540919 A CN201310540919 A CN 201310540919A CN 103574865 A CN103574865 A CN 103574865A
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- air
- air supply
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Abstract
The invention discloses a flexible air-supply diffuser. The flexible air-supply diffuser comprises a top plate, an air supply drum, a bottom plate and an air supply pipe, wherein upper-end and lower-end openings of the air supply drum are used for fixing the top plate and the bottom plate respectively, the air supply pipe communicated with the air supply drum is installed in the center of the bottom plate, the air supply pipe is a pipe open at upper and lower ends, and the lower end of the air supply pipe is connected with a fan; the air supply drum is a hollow drum with a regular-polygon-shaped cross section, and a plurality of air outlet holes are evenly distributed in side walls of the air supply drum; the air supply drum is made of a flexible material; a piston sliding block capable of sliding along the air supply pipe up and down is installed in the air supply pipe, and a longitudinal prop is connected between the piston sliding block and the top plate; and a piston sliding block opening is formed in the vertical direction of the piston sliding block. According to the flexible air-supply diffuser, the purpose of horizontal and vertical flow equalizing can be effectively achieved, and the air is evenly supplied in all directions simultaneously, so that the supplied air has good diffusivity. When the flexible air-supply diffuser does not work, the air supply drum can be folded, so that the occupied space of the air supply port is reduced effectively.
Description
Technical field
The present invention relates to a kind of Local Members of air conditioner, specifically a kind of flexible air-supply air diffuser.
Background technology
For a long time, people mainly adopt mixed ventilation or replacement aeration mode to carry out ambient parameter in control room.For the system of mixed ventilation, the new wind of sending into was polluted before arriving personnel respiratory region in room.Meanwhile, in order to guarantee personnel's thermal comfort, make the air themperature in full room reduce, can cause meaningless cold to expend.Comparatively speaking, the air stratification in replacement aeration room makes near the air of ground region cleaner, and temperature is also lower.Yet because human body Lower Half is more responsive to Air Flow, under replacement aeration environment, people easily produce the complaint of coldblast sense, and when pollution sources concentrate on bottom, room, this air-supply even can worsen air quality.
Different from above two kinds of systems, individual blowing is arranged in air port around workbench, when meeting user's free adjustment demand, has improved localized heat environment, and improved the quality of people's air amounts, therefore become the new lover in current supply terminal device.The individualized air supply device product of present stage is various, but its arranges on the table more, the form that adopts air port directly to blow facing to personnel respiratory region.Below several frequently seen individual blowing technology:
1) Chinese patent application (application number: 200610200546.7) that denomination of invention is individual air-supply adjustment, in the method, when the user of air-conditioning is unsatisfied with the comfortableness of own air conditioner surroundings around, can regulate or rotate the mechanism on air conditioning terminal air-supply arrangement, reduce the air-conditioning amount that blows to oneself, thereby change the comfort requirement that microenvironment parameter meets oneself, but the total blast volume that end equipment is sent remains unchanged and also can reduce, to guarantee the freshness of room air.
2) Chinese patent (patent No.: ZL200510011652.6) that denomination of invention is variable air delivery type individualized air supply device, this device comprises air inducing entrance, variable air rate blower fan, upright flexible air-supply pipeline section and tail end air port, described parts connect as a whole successively, and this device integral installation is in the operating position of air-conditioning object.The novel air-supply arrangement that for Different Individual, the preference of air-supply is differed and invent, can solve conventional hybrid ventilation energy consumption large simultaneously, and replacement aeration easily produces the problems such as local discomfort.
The Chinese patent that 3) denomination of invention is Personalized air supplying end device (patent No.: ZL201020552031.5), the unique design that this device consists of new wind volume damper, return air volume damper, manual adjustments knob or YE, volume damper pull bar etc.Can realize according to user's oneself wizard and require to arrange to regulate the wind pushing temperature this purpose in room separately.
To sum up, said method or device all have certain applicability, but but two problems of ubiquity in the specific implementation: first, it is poor that their air-supply only sends from a direction diffusivity that makes to blow, and because uneven its air-supply of the pressure distribution in air port is also inhomogeneous from top to bottom.So its air-supply comfortableness is poor.Secondly, these air ports can not fold or compress when not working, and take very much volume.
Summary of the invention
For the defect existing in above-mentioned prior art or deficiency, the object of the invention is to, a kind of flexible air-supply air diffuser is provided, this device can effectively be up to the standard and the vertical object of current-sharing, to all the winds balanced ventilation simultaneously, makes its air-supply have good diffusivity.While not working, thereby can folding minimizing, air funnel takes up room.
To achieve these goals, the present invention adopts following technical scheme to be solved:
An air-supply air diffuser, comprises top board, air funnel, base plate and ajutage; The upper end open of air funnel and lower ending opening be fixedly top board and base plate respectively, and described base plate center is provided with the ajutage being connected with air funnel, the body that ajutage is upper and lower opening, the lower end of the ajutage machine of giving a dinner for a visitor from afar; Described air funnel is that cross section is the empty cylinder of regular polygon, is uniformly distributed a plurality of exhaust vents on its sidewall; Air funnel is flexible material, and the piston slider that can slide up and down along ajutage is installed in ajutage, is connected with vertical top thick stick between piston slider and top board; On the vertical direction of piston slider, offer piston slider perforate.
Further, the area through type 1 of each exhaust vent on described air funnel calculates:
In formula, the air output that Q is exhaust vent, m
3/ s; △ P is pressure differential, Pa; G is acceleration of gravity, gets 9.8m/s
2; R is the severe of air, generally gets 11.76N/m
3; ξ is resistance coefficient, gets 0.4; A is the area of exhaust vent, m
2.
Further, on described chimney fan, the distance between the center of circle of any two adjacent exhaust vents is 0.01m.
Further, described air funnel is that cross section is square.
Further, the cross section of described ajutage is circle or regular polygon.
Further, the size of described top board and base plate is 220mm * 220mm, and thickness is 10mm; The cross section of air funnel is square, and the distance on chimney fan between the center of circle of any two adjacent exhaust vents is 0.01m; The developed area of air funnel is 880mm * 200mm; Ajutage is the square cylinder of cross section length of side 80mm; The length of vertical top thick stick is 440mm; Piston slider is of a size of 80mm * 80mm * 50mm; The cross section size of piston slider perforate is 30mm * 30mm.
Operation principle of the present invention is as follows:
Putting in blast, air-flow enters ajutage by ajutage lower ending opening, and through the piston slider perforate of offering on piston slider, enter the cylindrical cavity being formed by upper plate, air funnel and lower roof plate three, on air funnel, the air flow rate at each exhaust vent place is consistent, thereby guaranteed on air funnel to air-out good diffusion in all directions, and air output is even, can effectively realize the current-sharing of horizontal direction and vertical direction.While quitting work, the air-flow that is entered cavity by ajutage stops, and top board, air funnel cave in downwards under Action of Gravity Field, under the pressure of top board, vertical top thick stick promotes piston slider along ajutage down sliding, until air funnel is folding complete, the shared space of now the present invention greatly reduces.
Compared with prior art, beneficial effect of the present invention is as follows:
(1) exhaust vent on air funnel is evenly distributed, and the size of each exhaust vent considered that air funnel external and internal pressure is poor and designed, and the air-supply at each exhaust vent place stream is consistent thus, has realized to all the winds good diffusion of its air-out.Meanwhile, the distance between the center of circle of any two adjacent exhaust vents equates further to have guaranteed comfortableness; The air-supply that has overcome existing air-supply arrangement or method only from a direction send and air port in the pressure distribution inequality poor defect of comfortableness that causes blowing.
(2) air funnel adopts flexible material, (as cloth, plastics), in working order under by longitudinal crown bar jack-up, under off working state, can fold, institute takes up space and greatly reduces, overall structure is simple, is easy to realize.Overcome existing air-supply arrangement and taken the defect that volume is larger.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in more detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of flexible air-supply air diffuser of the present invention.
Fig. 2 is the cutaway view of flexible air-supply air diffuser duty of the present invention.
Fig. 3 is the structural representation of piston slider.
Fig. 4 is the cutaway view of flexible air-supply air diffuser off working state of the present invention.
Fig. 5 is by the pressure distribution schematic diagram in the circular cylindrical cavity in top board, air funnel, base plate besieged city in embodiments of the invention.
Fig. 6 is that the diameter of exhaust vent in embodiments of the invention and its form John Burroughs between vertical height of living in and be related to schematic diagram on air funnel.
Fig. 7 is the air supply velocity field homogenising schematic diagrames of embodiments of the invention when implementing air-supply.
Fig. 8 is that the air flow rate effect of the present invention and the equal-sized air-supply arrangement of existing exhaust vent compares schematic diagram.
Each label implication in figure: 1, top board, 2, exhaust vent, 3, flexible air funnel, 4, base plate, 5, ajutage, 6, vertical top thick stick, 7, piston slider, 8, piston slider perforate.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in more detail.
The specific embodiment
Main thought of the present invention is: in the equal-sized situation of exhaust vent for existing air-supply arrangement, each At The Height pressure differential difference of air funnel causes the defect of the uneven air of existing air-supply arrangement, on research air funnel, the exhaust vent size distribution situation of diverse location, even to guarantee air-supply arrangement air-out in all directions.
Inventor studies discovery, air-flow is after entering ajutage 5, by piston slider perforate 8, enter the column cavity being surrounded by top board 1, air funnel 3, base plate 4 threes, the pressure distribution forming in cavity as shown in Figure 5, can obviously find out, in cavity, top-down pressure distribution is inhomogeneous, for straight line air-out is also in order to make the air output of each exhaust vent 2 on air funnel 3 sidewalls in the same size, need to determine exhaust vent 2 sizes on air funnel 3 according to the pressure distribution of diverse location in circular cylindrical cavity.
Now there are some researches show, there is following relation in the air output Q of each exhaust vent and the pressure differential △ P of this exhaust vent whereabouts:
In formula, the air output that Q is exhaust vent, m
3/ s; △ P is pressure differential, Pa; G is acceleration of gravity, gets 9.8m/s
2; R is the severe of air, generally gets 11.76N/m
3; ξ is resistance coefficient, and its value can be looked into the practical heating ventilator design specification of the < < > > that Lu Yaoqing writes, and for the exhaust vent in the present invention, resistance coefficient ξ gets 0.4; A is the area of exhaust vent, m
2.
From formula 1, in the situation that air output Q is certain, the pressure differential △ P of the area of arbitrary exhaust vent 2 and its place air funnel 3 positions presents negative two/first power relation, and vertically the pressure difference value △ P of each At The Height is different on air funnel 3, therefore on air funnel 3, the area of the exhaust vent 2 at differing heights place is also different, when the pressure differential △ P of present position determines on air funnel 3 with certain exhaust vent at air output Q, according to formula 1, can access the area of the exhaust vent 2 that is positioned at this place.Concrete steps are as follows: 1) record the inside and outside pressure distribution situation of air funnel 3, calculate the pressure differential △ P of each At The Height on air funnel 3.2) total air output that use needs, divided by total number of exhaust vent 2 on air funnel 3, obtains the air output Q of each exhaust vent 2.3) according to formula 1, draw on air funnel 3 area A of exhaust vent 2 everywhere.
For example, for being highly 0.2m, the air funnel 3 that top board and base plate diameter are 0.2m, the pressure differential △ P that is obtained 1/10 place from top to bottom of air funnel 3 by Fig. 5 is 15Pa, severe r is 11.76N/m
3, gravity acceleration g is 9.8m/s
2, resistance coefficient ξ is 0.4, air output Q is 0.1m
3/ s, exhaust vent 2 area A that calculated under this height by formula 1 are 0.04m
2.This test obtains the diameter (as shown in table 1) of the exhaust vent 2 at differing heights place on air funnel 3, and obtains the diameter of exhaust vent 2 and the distribution relation of elevation at differing heights place on air funnel 3 as shown in Figure 6.Elevation is herein that wind pushing hole 2 is apart from the vertical range of the base plate 4 of air funnel 3.
The diameter of table 1 exhaust vent table corresponding to elevation (unit: m)
| |
0 | 0.01017 | 0.020339 | 0.030509 | 0.040678 | 0.050848 | 0.061017 |
| Diameter | 0.00295 | 0.00344 | 0.00359 | 0.00362 | 0.0036 | 0.00355 | 0.00347 |
| Elevation | 0.071186 | 0.081356 | 0.091525 | 0.101695 | 0.111864 | 0.122034 | 0.132203 |
| Diameter | 0.00338 | 0.00328 | 0.00318 | 0.00306 | 0.00295 | 0.00283 | 0.00272 |
| Elevation | 0.142373 | 0.152542 | 0.162712 | 0.172881 | 0.183051 | 0.19322 | 0.2 |
| Diameter | 0.0026 | 0.00248 | 0.00236 | 0.00224 | 0.00213 | 0.00201 | 0.00194 |
Inventor is by the result between the diameter elevation corresponding to it of the exhaust vent 2 shown in table 1, through matching, obtain equation as shown in Equation 2, finding that this equation meets John Burroughs relation, is also between the diameter elevation corresponding to it of exhaust vent 2 of vertical direction on air funnel 3, to meet John Burroughs relation:
Diameter=y
0+ W * (1-exp ((elevation-x
0)/t
1)) ^P * exp ((elevation-x
0)/t
2) (formula 2)
In formula, y
0=-0.00262; x
0=-0.525; W=0.00891; t
1=37.56187; P=0.10631; t
2=35.49406.
In order to make on air funnel 3 to equate along the air output of the exhaust vent 2 of elevation direction, on air funnel 3, the diameter of the exhaust vent 2 at differing heights place and this exhaust vent height of living in meet the John Burroughs relation shown in formula 2, thereby have guaranteed that the air-supply of air funnel 3 is even.
In addition, the uniformity of air-supply jet is also relevant with the distribution of exhaust vent 2 on air funnel 3, and inventor has carried out following analysis to the distribution situation of exhaust vent 2:
Because flexible individualized air supply device of the present invention is apart from human body very near (0.2m), according to comfortableization requirement, need to determine the distance between the center of circle of every two the adjacent exhaust vents 2 on chimney fan 3.According to following free jet formula:
Known jet diffusion diameter=0.07 * jet jet length * 6.8+0.147 * spout caliber
Because spout caliber in the present invention (being the diameter of exhaust vent 2) is only several millimeters, can be similar to and ignore spout caliber, have:
Known jet diffusion diameter=0.07 * jet jet length * 6.8
In the present invention according to reality air-supply needs, get jet jet length 0.2m, and consider that surrounding air is to flow perturbation, get 10 safety coefficients, making final jet jet length is 0.02m, calculating jet diffusion diameter is 0.01m, the distance between the center of circle of two adjacent exhaust vents 2 on chimney fan 3 is defined as to 0.01m.In the present invention, between exhaust vent 2 up and down, distance equates it is in order to better meet jet uniformity requirement, the space that each jet is filled is equated, thereby effectively meet comfortableness requirement.
The cross section of ajutage 5 is circle or regular polygon.
Embodiment:
The specific embodiment that following inventor provides, it should be noted that, the present invention is not limited to following specific embodiment, and all equivalents of doing on present techniques scheme basis all fall into protection scope of the present invention.
The present embodiment is deferred to technique scheme of the present invention, and the size of its top board and base plate is 220mm * 220mm, and thickness is 10mm; The cross section of air funnel 3 is square, and the exhaust vent 2 on air funnel 3 sidewalls is along the diameter of elevation in Table 1, and the distance on chimney fan between the center of circle of any two adjacent exhaust vents is 0.01m; The developed area of air funnel 3 is 880mm * 200mm; Ajutage 5 is the square cylinder of cross section length of side 80mm; The length of vertical top thick stick 6 is 440mm; Piston slider 7 is of a size of 80mm * 80mm * 50mm; The cross section size of piston slider perforate 8 is 30mm * 30mm.
In order to verify the air-supply effect of this embodiment, inventor has carried out numerical simulation to flexibility air-supply air diffuser, and analog result as shown in Figure 8, visible, adopt after this design invention, the air output approximately equal at each exhaust vent 2 places, thus guaranteed that the air-supply of flexibility air-supply air diffuser of this embodiment is even.
Claims (6)
1. a flexible air-supply air diffuser, comprises top board (1), air funnel (3), base plate (4) and ajutage (5); The upper end open of air funnel (3) and lower ending opening be fixedly top board (1) and base plate (4) respectively, described base plate (4) center is provided with the ajutage (5) being connected with air funnel (3), the body that ajutage (5) is upper and lower opening, the lower end of ajutage (5) machine of giving a dinner for a visitor from afar; It is characterized in that, described air funnel (3), for the empty cylinder that cross section is regular polygon, is uniformly distributed a plurality of exhaust vents (2) on its sidewall; Air funnel (3) is flexible material, and the piston slider (7) that can slide up and down along ajutage (5) is installed in ajutage (5), is connected with vertical top thick stick (6) between piston slider (7) and top board (1); On the vertical direction of piston slider (7), offer piston slider perforate (8).
2. flexible air-supply air diffuser as claimed in claim 1, is characterized in that, the area through type 1 of each exhaust vent (2) on described air funnel (3) calculates:
In formula, the air output that Q is exhaust vent, m
3/ s; △ P is pressure differential, Pa; G is acceleration of gravity, gets 9.8m/s
2; R is the severe of air, generally gets 11.76N/m
3; ξ is resistance coefficient, gets 0.4; A is the area of exhaust vent, m
2.
3. flexible air-supply air diffuser as claimed in claim 1, is characterized in that, the distance between the center of circle of upper any two the adjacent exhaust vents (2) of described chimney fan (3) is 0.01m.
4. flexible air-supply air diffuser as claimed in claim 1, is characterized in that, described air funnel (3) for cross section be square.
5. flexible air-supply air diffuser as claimed in claim 1, is characterized in that, the cross section of described ajutage (5) is circle or regular polygon.
6. flexible air-supply air diffuser as claimed in claim 1, is characterized in that, the size of described top board (1) and base plate (4) is 220mm * 220mm, and thickness is 10mm; The cross section of air funnel (3) is square, and the distance on chimney fan between the center of circle of any two adjacent exhaust vents is 0.01m; The developed area of air funnel (3) is 880mm * 200mm; Ajutage (5) is the square cylinder of cross section length of side 80mm; The length of vertical top thick stick (6) is 440mm; Piston slider (7) is of a size of 80mm * 80mm * 50mm; The cross section size of piston slider perforate (8) is 30mm * 30mm.
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|---|---|---|---|
| CN201310540919.5A CN103574865B (en) | 2013-11-04 | 2013-11-04 | A kind of flexible air-supply air diffuser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310540919.5A CN103574865B (en) | 2013-11-04 | 2013-11-04 | A kind of flexible air-supply air diffuser |
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| CN103574865B CN103574865B (en) | 2016-04-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196393A (en) * | 2016-08-18 | 2016-12-07 | 珠海格力电器股份有限公司 | Blowing device |
| CN107816756A (en) * | 2017-12-04 | 2018-03-20 | 广东美的制冷设备有限公司 | Ceiling machine |
| CN113375326A (en) * | 2021-06-04 | 2021-09-10 | 大连海事大学 | Air distribution device based on rectangular jet flow film oscillation |
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| JPS6071832A (en) * | 1983-09-29 | 1985-04-23 | Nippon Haigou Shiryo Kk | Ventilating device equipped with soft duct |
| CN87207305U (en) * | 1987-07-16 | 1988-04-27 | 同济大学 | Fresh air feeder with extensible hose |
| CN2185397Y (en) * | 1994-01-25 | 1994-12-14 | 王爱民 | Energy-saving telescopic tuyere |
| JPH1122996A (en) * | 1997-07-04 | 1999-01-26 | Zexel Corp | Diffuser duct structure for air conditioning indoor unit |
| CN2765099Y (en) * | 2004-12-10 | 2006-03-15 | 谢文春 | Air outlet device |
| CN201348344Y (en) * | 2008-09-28 | 2009-11-18 | 徐军 | Blast pipe singe element, combined type blast pipe and blast pipe |
| CN201425361Y (en) * | 2009-03-06 | 2010-03-17 | 长沙凯天环保科技有限公司 | Air supplying drum |
| CN203068750U (en) * | 2013-01-25 | 2013-07-17 | 凯天环保科技股份有限公司 | Radial air supply device provided with adjustable shaft |
-
2013
- 2013-11-04 CN CN201310540919.5A patent/CN103574865B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6071832A (en) * | 1983-09-29 | 1985-04-23 | Nippon Haigou Shiryo Kk | Ventilating device equipped with soft duct |
| CN87207305U (en) * | 1987-07-16 | 1988-04-27 | 同济大学 | Fresh air feeder with extensible hose |
| CN2185397Y (en) * | 1994-01-25 | 1994-12-14 | 王爱民 | Energy-saving telescopic tuyere |
| JPH1122996A (en) * | 1997-07-04 | 1999-01-26 | Zexel Corp | Diffuser duct structure for air conditioning indoor unit |
| CN2765099Y (en) * | 2004-12-10 | 2006-03-15 | 谢文春 | Air outlet device |
| CN201348344Y (en) * | 2008-09-28 | 2009-11-18 | 徐军 | Blast pipe singe element, combined type blast pipe and blast pipe |
| CN201425361Y (en) * | 2009-03-06 | 2010-03-17 | 长沙凯天环保科技有限公司 | Air supplying drum |
| CN203068750U (en) * | 2013-01-25 | 2013-07-17 | 凯天环保科技股份有限公司 | Radial air supply device provided with adjustable shaft |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196393A (en) * | 2016-08-18 | 2016-12-07 | 珠海格力电器股份有限公司 | Blowing device |
| CN107816756A (en) * | 2017-12-04 | 2018-03-20 | 广东美的制冷设备有限公司 | Ceiling machine |
| CN107816756B (en) * | 2017-12-04 | 2023-09-08 | 广东美的制冷设备有限公司 | Ceiling machine |
| CN113375326A (en) * | 2021-06-04 | 2021-09-10 | 大连海事大学 | Air distribution device based on rectangular jet flow film oscillation |
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| Publication number | Publication date |
|---|---|
| CN103574865B (en) | 2016-04-13 |
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Granted publication date: 20160413 Termination date: 20181104 |