CN1963322A - A dynamical replacement aeration and blast apparatus - Google Patents
A dynamical replacement aeration and blast apparatus Download PDFInfo
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- CN1963322A CN1963322A CN 200610144278 CN200610144278A CN1963322A CN 1963322 A CN1963322 A CN 1963322A CN 200610144278 CN200610144278 CN 200610144278 CN 200610144278 A CN200610144278 A CN 200610144278A CN 1963322 A CN1963322 A CN 1963322A
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- dividing plate
- circular arc
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- inclination
- wind
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Abstract
A dynamo driven ventilation and air blast exchanger features in the even flow and dynamo driven characteristics. Based on the traditional device, it adds an inside linear even flow barricade between which and the output grid forms into a secondary curve cavity. Due to the shape and structure of the linear even flow barricade, remaining constant differential static pressure at the end of the wind channel, sending the wind to wind blast device through the wind channel. After the treatment of the linear even flow barricade, the dynamic pressure decreases and the static pressure increases. Inside the secondary curve cavity between the linear even flow barricade and the output grid, an even flow field is formed with even distribution of wind height and width and meeting wind speed requirement for ventilation exchanging.
Description
Technical field
The present invention relates to a kind of power type replacement aeration and blast apparatus, belong to the HVAC technical field,
Background technology
Replacement aeration is a kind of novel air conditioner ventilation mode, this air supply mode is compared with traditional mixed ventilation mode, can make the office work district obtain higher air quality and thermal comfort preferably, and have higher drafting efficiency, thereby in industrial building, civil buildings and public building, obtained using widely.Replacement aeration is most widely used in Northern European countries, and about 50% industrial ventilation system has adopted replacement aeration, and about 25% office has adopted displacement ventilation system.Some domestic engineerings begin to adopt displacement ventilation system at present.
And for replacement aeration, prior art both domestic and external and product mainly also all are in the majority with passive type.This traditional replacement aeration and blast apparatus inside only is provided with current equalizer, and when not having enough static pressure in supply air duct or the floor, the diffusing mobilization force of replacement aeration and blast apparatus continues to reduce; When in air channel or the floor with indoor static pressure pressure reduction during less than the air-supply arrangement resistance, the replacement aeration and blast apparatus air-flow of will not blowing, air-supply arrangement can't play the air diffuser effect.
And existing power type replacement aeration and blast apparatus kind is number and few, from the air-vent air intake, send by exhaust outlet,, increased dynamic pressure though blower fan is equipped with in inside, but because the influence of blower fan work, make air-out mainly be distributed in the part, velocity flow profile is very inhomogeneous, and some local wind speed is excessive, also have a lot of places almost do not have wind or or even negative pressure, cause and pour wind regime into.Therefore so, cause at the plenum chamber internal resistance also greatlyyer, can not reach theoretical delivery at the air outlet place, can not satisfy low wind speed and the uniformity requirement of replacement aeration air-out.
Summary of the invention
Goal of the invention provides a kind of dynamical replacement aeration and blast apparatus, and is big to solve existing power type replacement aeration and blast apparatus resistance, the uneven problem of air-out.
Technical scheme of the present invention is as follows:
A kind of dynamical replacement aeration and blast apparatus, comprise air-vent, booster fan and outlet grid, it is characterized in that: between described booster fan and outlet grid, be provided with streamlined current-sharing dividing plate, form a conic section shape cavity between this dividing plate and the outlet grid 3; Described streamlined current-sharing dividing plate is made up of with a vertical circular arc dividing plate that is arranged on below this inclination circular arc dividing plate an inclination circular arc dividing plate; Described inclination circular arc dividing plate is straight line on one side, and another side is a circular arc; Described vertical circular arc dividing plate is the tubular of conic section, the curvature on the circular arc limit on vertical circular arc dividing plate top is identical with inclination circular arc dividing plate circular arc curvature on one side, and the circular arc limit of described inclination circular arc dividing plate is mediated with the arc limit on described vertical circular arc dividing plate top and is one.
The angle of inclination of described inclination circular arc dividing plate of the present invention is in 30 °～60 ° the scope.
The present invention compared with prior art, have the following advantages and the high-lighting progress: the present invention is because in power type displacement air-supply arrangement inside, promptly between described booster fan and outlet grid, be provided with streamlined current-sharing dividing plate, be used to the current-sharing of blowing, therefore, under the situation of air channel terminal differential static pressure size change, can make wind enter air-supply arrangement equally from the air channel, after streamlined current-sharing dividing plate is handled, dynamic pressure reduces, and static pressure increases, and forms uniform flow field in the conic section shape cavity between streamlined current-sharing dividing plate and outlet grid, air-supply can both be evenly distributed in height and width range, and satisfies the wind speed requirement of replacement aeration.
Description of drawings
Fig. 1 is the replacement aeration and blast apparatus front view.
Fig. 2 is the replacement aeration and blast apparatus left view.
Fig. 3 is the replacement aeration and blast apparatus vertical view.
Fig. 4 is the front view of streamlined current-sharing dividing plate.
Fig. 5 is the left view of streamlined current-sharing dividing plate.
Fig. 6 is the vertical view of streamlined current-sharing dividing plate.
Fig. 7 is the conic section shape figure of streamlined current-sharing dividing plate.
Among the figure: the 1-booster fan; The streamlined current-sharing dividing plate of 2-; 3-exports grid; The 4-air-vent; 5-inclination circular arc dividing plate; The vertical circular arc dividing plate of 6-; The 7-base plate; The 8-conic section.
The specific embodiment
Below in conjunction with concrete accompanying drawing concrete structure of the present invention and enforcement are described in further detail:
Dynamical replacement aeration and blast apparatus provided by the invention contains air-vent 4, booster fan 1, streamlined current-sharing dividing plate 2 and outlet grid 3.Streamlined current-sharing dividing plate 2 is arranged between booster fan 1 and the outlet grid 3, forms a conic section shape cavity between this dividing plate and the outlet grid 3.Described streamlined current-sharing dividing plate 2 is made up of with a vertical circular arc dividing plate 6 that is arranged on below this inclination circular arc dividing plate an inclination circular arc dividing plate 5; Described inclination circular arc dividing plate 5 is a straight line on one side, and another side is a circular arc; Described vertical circular arc dividing plate 6 is the tubular of conic section, the curvature on the circular arc limit on vertical circular arc dividing plate 6 tops is identical with inclination circular arc dividing plate 5 circular arcs curvature on one side, and the circular arc limit of described inclination circular arc dividing plate 5 is mediated with the arc limit on described vertical circular arc dividing plate 6 tops and is one.Decide according to concrete condition at the angle of inclination of described inclination circular arc dividing plate, is generally in 30 °～60 ° the scope.
Streamlined current-sharing dividing plate is the conic section shape of symmetry, and quadratic curve equation is determined by formula (1).The air-flow that inclination circular arc dividing plate 5 is adjusted on the height distributes, and the air-flow that vertical circular arc dividing plate 6 is adjusted on the width distributes.Outlet grid 3 be a circular orifice, on a large amount of evenly densely covered small sircle holes are arranged.Leave enough big conic section shape cavity between streamlined current-sharing dividing plate 2 and the outlet grid 3.The air-supply of plenum chamber is sent into air-vent 4 by the air channel earlier, and through booster fan 1 pressurization, dynamic pressure increases; Pass through streamlined current-sharing dividing plate 2 then, dynamic pressure reduces, static pressure increases, the distribution of air-flow on the height and the width direction is all more even, form uniform and stable flow field in the conic section shape cavity between streamlined current-sharing dividing plate 2 and outlet grid 3, speed and distribution also more meet the air-supply standard of replacement aeration, through the outlet grid 3 of displacement air-supply arrangement, are evenly sent at last.Because during fluid flows, static pressure and dynamic pressure can be changed (seeing formula (2)) mutually, and the effect that the cavity of streamlined current-sharing dividing plate 2 and 3 of grids of outlet has served as the secondary plenum chamber, air-supply makes the wind speed that goes out stream from outlet grid 3 all approach unanimity along dynamical replacement aeration and blast apparatus height and width through converting uneven dynamic pressure to compare uniformity on the space static pressure behind this cavity.
y＝x
2/1000 (1)
P
t＝P
s+1/2ρV
2 (2)
Wherein: P
tBe the total head that fluid flows, Pa
P
sBe static pressure, Pa
V is the flow velocity at measuring point place, m/s
The air supply velocity of dynamical replacement aeration and blast apparatus provided by the invention has guaranteed personnel's comfortableness near 0.2m/s, even indoor occupant does not have tangible blowing feeling yet before air-supply arrangement.
Built-in booster fan 1 horizontal positioned, air-vent 4 are arranged in displacement air-supply arrangement below, are close to the air-supply arrangement lower baffle plate, and form is changeable, can be the cylindric raised flooring that stretches into, and also can directly be connected into ventilation shaft.
Claims (2)
1. dynamical replacement aeration and blast apparatus, comprise air-vent (4), booster fan (1) and outlet grid (3), it is characterized in that: between described booster fan (1) and outlet grid (3), be provided with streamlined current-sharing dividing plate (2), form a conic section shape cavity between this dividing plate and the outlet grid 3; Described streamlined current-sharing dividing plate (2) is made up of with a vertical circular arc dividing plate (6) that is arranged on below this inclination circular arc dividing plate (5) an inclination circular arc dividing plate (5); Described inclination circular arc dividing plate (5) is a straight line on one side, and another side is a circular arc; Described vertical circular arc dividing plate (6) is the tubular of conic section, the curvature on the circular arc limit on vertical circular arc dividing plate (6) top is identical with inclination circular arc dividing plate (5) circular arc curvature on one side, and the circular arc limit of described inclination circular arc dividing plate is mediated with the arc limit on described vertical circular arc dividing plate top and is one.
2. according to right 1 described dynamical replacement aeration and blast apparatus, it is characterized in that: the angle of inclination of described inclination circular arc dividing plate (5) is in 30 °～60 ° the scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101442781A CN100451469C (en) | 2006-12-01 | 2006-12-01 | A dynamical replacement aeration and blast apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101442781A CN100451469C (en) | 2006-12-01 | 2006-12-01 | A dynamical replacement aeration and blast apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1963322A true CN1963322A (en) | 2007-05-16 |
| CN100451469C CN100451469C (en) | 2009-01-14 |
Family
ID=38082471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101442781A Expired - Fee Related CN100451469C (en) | 2006-12-01 | 2006-12-01 | A dynamical replacement aeration and blast apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100451469C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825330A (en) * | 2010-04-15 | 2010-09-08 | 西安建筑科技大学 | Overhead wall adherent low diffusion ladder flow air supply system for displacement ventilation |
| CN102434926A (en) * | 2010-09-28 | 2012-05-02 | 勤益科技大学 | Device and method for cooling and humidifying air in building |
| CN105178645A (en) * | 2015-09-11 | 2015-12-23 | 无锡零界净化设备有限公司 | Negative pressure weighing chamber |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2441073Y (en) * | 2000-09-06 | 2001-08-01 | 东莞市桥头飞达通风空调配件厂 | Replaceable ventilating opening |
| CN2529189Y (en) * | 2002-02-08 | 2003-01-01 | 上海良机冷却设备有限公司 | Arc plate of vertical cooling tower |
| CA2454220C (en) * | 2003-12-24 | 2008-12-30 | Juergen Koessler | Vent apparatus |
| CN2677808Y (en) * | 2004-01-16 | 2005-02-09 | 清华大学 | Movable dynamic ventilation air port |
| JP4557207B2 (en) * | 2004-05-31 | 2010-10-06 | 株式会社竹中工務店 | Ventilation replacement air conditioner |
| PL1867932T3 (en) * | 2005-01-06 | 2009-07-31 | Oy Halton Group Ltd | Automatic displacement ventilation system with heating mode |
| CN2770755Y (en) * | 2005-02-04 | 2006-04-12 | 深圳市金开利环境科技有限公司 | Ultrasilencing high-cleanliness air purifying unit |
-
2006
- 2006-12-01 CN CNB2006101442781A patent/CN100451469C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825330A (en) * | 2010-04-15 | 2010-09-08 | 西安建筑科技大学 | Overhead wall adherent low diffusion ladder flow air supply system for displacement ventilation |
| CN102434926A (en) * | 2010-09-28 | 2012-05-02 | 勤益科技大学 | Device and method for cooling and humidifying air in building |
| CN102434926B (en) * | 2010-09-28 | 2015-02-18 | 勤益科技大学 | Device and method for cooling and humidifying air in building |
| CN105178645A (en) * | 2015-09-11 | 2015-12-23 | 无锡零界净化设备有限公司 | Negative pressure weighing chamber |
| CN105178645B (en) * | 2015-09-11 | 2017-12-12 | 无锡零界净化设备股份有限公司 | Negative pressure weighing room |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100451469C (en) | 2009-01-14 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20131201 |