CN2677808Y - Movable dynamic ventilation air port - Google Patents
Movable dynamic ventilation air port Download PDFInfo
- Publication number
- CN2677808Y CN2677808Y CN 200420000489 CN200420000489U CN2677808Y CN 2677808 Y CN2677808 Y CN 2677808Y CN 200420000489 CN200420000489 CN 200420000489 CN 200420000489 U CN200420000489 U CN 200420000489U CN 2677808 Y CN2677808 Y CN 2677808Y
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- China
- Prior art keywords
- air
- air port
- utility
- model
- booster fan
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- 238000009423 ventilation Methods 0.000 title abstract description 10
- 238000005273 aeration Methods 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 12
- 238000006073 displacement reaction Methods 0.000 abstract description 10
- 238000007664 blowing Methods 0.000 abstract description 7
- 238000004378 air conditioning Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a movable dynamic displacement ventilation air port, which relates to a tail end device of an air conditioning system. The utility model comprises air blowing lead-in ports, an inlet cavity, a flow equalizing plate, a flow equalizing cavity and an outlet grid. The utility model is characterized in that a booster fan is added in the inlet cavity between air blowing lead-in ports and the flow equalizing plate. The booster fan can be vertically arranged or horizontally arranged. Inlets of the booster fan are respectively connected with air blowing lead-in ports. The utility model has advantages that on a large sized displacement ventilating occasion, when a tail end static pressure difference of an air passage is smaller than a set minimal value of the displacement air port, the air port can raise the tail end static pressure to satisfy the requirement of the terminal air supply of the air conditioner. At the same time, the air port can also adjust the air quantity and the air speed of the air supply according to actual requirements.
Description
Technical field
The utility model relates to a kind of end equipment of air-conditioning system, is used for 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, good thermal comfort and have higher drafting efficiency, thereby in industrial building, civil buildings and public building, obtain using widely.Replacement aeration is most widely used in Northern European countries, and about 50% industrial ventilation system has adopted the replacement aeration mode, and about 25% office has adopted displacement ventilation system.At present some domestic engineerings begin to adopt displacement ventilation system (referring to Li Longyu, the Li Qiang people, the principle of replacement aeration and application, dust removal by ventilation, 1996, (1): 27-31).In the air-supply of bottom, room, air-flow slowly moves up with the plug flow regime of similar laminar flow replacement aeration with low speed, arrives the influence that certain altitude is subjected to thermal source and top board, and turbulent phenomenon takes place, and produces the turbulent region.The space air-flow can be divided into one-way flow zone, bottom and turbulent mixture zone, top.Air themperature field and concentration field have very significantly different qualities in these two zones: one-way flow district in bottom exists obvious vertical temperature gradient and concentration gradient, temperature field, turbulent mixture district, top and concentration field are then relatively more even, near the temperature and the pollutant levels of air draft.Therefore, theoretically, as long as guarantee layer height more than the workspace, can guarantee does not have tangible blowing feeling at the workspace human body; Fresh clean air is at first sent into the workspace, earlier through human body, guarantees that human body is in the air ambient that cleans relatively, has improved the air quality of workspace, personnel place effectively.Reaching under the identical air-conditioning effect prerequisite, replacement aeration is than traditional mixed ventilation energy-conservation 10%～50%; Replacement aeration to the control of indoor pollutant can than conventional hybrid ventilate reach better effect (see the Li Qiang people, replacement aeration principle, design and application, HVAC, 2000,30 (5), 41-46).
The air-supply of replacement aeration is sent to the replacement aeration air port of end equipment through air channel or plenum chamber, and the replacement aeration air port is as a kind of air diffuser balanced ventilation of end.Traditional inside, unpowered type replacement aeration air port only is provided with current equalizer, and when not having enough static pressure in supply air duct or the plenum chamber, the diffusing mobilization force in replacement aeration air port continues to reduce; When the pressure reduction between air channel or plenum chamber and the indoor static pressure during less than the air port resistance, the replacement aeration air port air-flow of not blowing, the air diffuser effect can't be played in the air port.The reason that causes this defective is: large-scale replacement aeration occasion, when the displacement tuyere position was far away apart from the air-supply source, loss in head was excessive during air-supply transported, and caused terminal static pressure deficiency.
China's utility model patent discloses a kind of (publication number is CN2441073) replacement aeration air port, belongs to unpowered type displacement air port equally.This patent has kept the principal character in traditional unpowered type air port, comprise inlet box, connect tube sheet, air deflector, panel with holes (homogenizing plate) and fixed mount thereof, wherein inlet box, connection tube sheet and air deflector are affixed successively vertically, on the tank wall of inlet box, be placed with fresh air inlet, be provided with the adjustable plate that matches with its inner chamber cross section in the inlet box, this adjustable plate can be by coupled volume adjusting apparatus moving axially along inlet box; Volume adjusting apparatus can be spring location adjusting device, limit screw cap adjusting device or pull bar adjusting etc.This replacement aeration air port can make things convenient for the adjusting of replacement aeration from positive regulated at will air outlet air quantity; But, when the terminal static pressure in supply air duct or plenum chamber is not enough, can't satisfy indoor air-supply demand because it remains a kind of unpowered type replacement aeration air port.
The utility model content
The purpose of this utility model is to solve the problem that traditional replacement aeration air port is short of power, and promptly still can satisfy indoor air-supply requirement when the displacement tuyere position is far away apart from the air-supply source.
The technical solution of the utility model is as follows: a kind of removable power type replacement aeration air port, comprise the air-supply intake, the inlet cavity, homogenizing plate, current-sharing cavity and outlet grid, it is characterized in that: set up a booster fan in the inlet cavity between air-supply intake and homogenizing plate, this increases blower fan can vertically place or horizontal positioned, and the import of its blower fan links to each other with described air-supply intake.
In order to make air-supply air quantity and wind speed be convenient to regulate, described booster fan can be selected the small pipeline blower fan that has frequency conversion or have level to regulate for use.
The utility model compared with prior art, have the following advantages and technique effect: in large-scale replacement aeration occasion, when the terminal differential static pressure in air channel during less than the setting minimum of a value in displacement air port, this air port can promote terminal static pressure well, satisfies air conditioning terminal air-supply demand.Simultaneously, this air port can also be regulated air port air-supply air quantity and wind speed according to the actual requirements, satisfies different operating mode demands.
Description of drawings
The front view in the power type replacement aeration air port that Fig. 1 provides for the utility model.
Fig. 2 is the side view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing structure of the present utility model is described further.
This replacement aeration air port mainly comprises air-supply intake 1, booster fan 2, and inlet cavity 4, homogenizing plate 3, current-sharing cavity 5 and outlet grid 6, booster fan 2 is arranged in the inlet cavity 4 of blowing between intake and the homogenizing plate.
Intake can be positioned at bottom side, air port or air port rear side portion on the lower side, corresponds respectively to the horizontal or vertical placement of blower fan.Arrange that so the air-supply intake is to insert for the ease of the air channel of different occasions.
This booster fan can be selected the small pipeline blower fan that has frequency conversion or have level to regulate for use.The air output in air port and change of wind velocity can be by to the frequency conversions of blower fan or have level to regulate to realize.Built-in booster fan is riveted or is welded in the air port.The making of homogenizing plate and other parts and fixing and traditional replacement aeration air port is similar.
Be covered with aperture on the homogenizing plate 3, be used for all pressing through the air-supply air-flow current-sharing after the booster fan supercharging.Leave suitable distance between homogenizing plate and the outlet grid 6, guarantee that it is current-sharing cavity 5 that enough big cavity, this cavity are arranged.Intake 1 is sent in the air-supply of plenum chamber earlier, and through the blower fan pressurization, dynamic pressure increases; Pass through homogenizing plate 3 then, dynamic pressure reduces, and static pressure increases, and air-flow distributes comparatively evenly current-sharing cavity 5 in, through replacing the outlet grid 6 in air port, is evenly sent at last.Because during fluid flows, static pressure and dynamic pressure can be changed (seeing formula (1)) mutually, and the cavity of all pressing between homogenizing plate and displacement air port outlet grid has served as the effect (the inlet cavity has served as the effect of one-level plenum chamber) of secondary plenum chamber, air-supply makes the wind speed that goes out to flow from the air port grid approach unanimity along the air port short transverse through converting uneven dynamic pressure to compare uniformity on the space static pressure behind this cavity.
Pt＝P
s+1/2?ρV
2 (1)
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 that replacement aeration requires has guaranteed personnel's comfortableness, even indoor occupant does not have tangible blowing feeling yet before the air port less than 0.2m/s.
This utility model outlet grid and shell and traditional unpowered type replacement aeration air port are similar.Tuyere shell except that shown in Figure 1 flat-shaped, also have column type, 1/2 column type and 1/4 column type etc.The main distinction in various dissimilar air ports is corresponding to the Fan Selection of different air quantity with corresponding to the homogenizing plate shape of air port external form.
Claims (2)
1. removable power type replacement aeration air port, comprise air-supply intake (1), inlet cavity (4), homogenizing plate (3) and outlet grid (6), it is characterized in that: set up a booster fan (2) in the inlet cavity (4) between air-supply intake (1) and homogenizing plate (3), this booster fan is vertical to be placed or horizontal positioned, and the import of its blower fan links to each other with described air-supply intake respectively.
2. according to the described power type replacement aeration of claim 1 air port, it is characterized in that: described booster fan is selected the small pipeline blower fan that has frequency conversion or have level to regulate for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420000489 CN2677808Y (en) | 2004-01-16 | 2004-01-16 | Movable dynamic ventilation air port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420000489 CN2677808Y (en) | 2004-01-16 | 2004-01-16 | Movable dynamic ventilation air port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2677808Y true CN2677808Y (en) | 2005-02-09 |
Family
ID=34582286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420000489 Expired - Fee Related CN2677808Y (en) | 2004-01-16 | 2004-01-16 | Movable dynamic ventilation air port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2677808Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299076C (en) * | 2005-04-29 | 2007-02-07 | 清华大学 | Air supply device for variable air delivery through floor |
| CN1304794C (en) * | 2005-04-29 | 2007-03-14 | 清华大学 | Variable air delivery type individualized air supply device |
| CN100451469C (en) * | 2006-12-01 | 2009-01-14 | 清华大学 | A dynamical replacement aeration and blast apparatus |
-
2004
- 2004-01-16 CN CN 200420000489 patent/CN2677808Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299076C (en) * | 2005-04-29 | 2007-02-07 | 清华大学 | Air supply device for variable air delivery through floor |
| CN1304794C (en) * | 2005-04-29 | 2007-03-14 | 清华大学 | Variable air delivery type individualized air supply device |
| CN100451469C (en) * | 2006-12-01 | 2009-01-14 | 清华大学 | A dynamical replacement aeration and blast apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |