CN201652723U - Single centrifugal fan type and double centrifugal fan type current equalizing clean cover - Google Patents
Single centrifugal fan type and double centrifugal fan type current equalizing clean cover Download PDFInfo
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- CN201652723U CN201652723U CN2010201294391U CN201020129439U CN201652723U CN 201652723 U CN201652723 U CN 201652723U CN 2010201294391 U CN2010201294391 U CN 2010201294391U CN 201020129439 U CN201020129439 U CN 201020129439U CN 201652723 U CN201652723 U CN 201652723U
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- centrifugal blower
- filter
- air
- prefilter
- high efficiency
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Abstract
The utility model relates to a single centrifugal fan type and double centrifugal fan type current equalizing clean cover comprising a pre-filter, centrifugal fans, fan boxes, a static pressure box and a high efficiency air filter. The clean cover is characterized in that the pre-filter and the high-efficiency air filter, which respectively act as the top and bottom of the clean cover, are centrosymmetrically arranged; the fan box is arranged at the lower side of the pre-filter; one centrifugal fan and the pre-filter are correspondingly horizontally placed in the fan box or, with opposite air outlets, the two centrifugal fans together with the pre-filter are correspondingly horizontally placed in the fan box; the lateral wall of the static pressure box, which corresponds to the air outlet of the centrifugal fan and two sides of which are tightly connected between the pre-filter and the high efficiency air filter is shaped like a slope with a smooth dip angle; and the air outlet of the centrifugal fan is provided with a variable inclination angle fixed blade type louver current equalizer. The clean cover has advantages of improvement of static pressure distribution uniformity everywhere at the windward side of the high efficiency filter, more equal wind outlet speed, proper wind quantity, wind pressure and wind speed, more efficient pre-filter, small size, light weight and lower noise.
Description
Technical field
The utility model relates to air cleaning apparatus, relates in particular to single centrifugal blower formula and the clean cover of the equal flow pattern of two centrifugal blower formulas.
Background technology
The air cleaning cover that with the centrifugal blower is power source is used to form local I SO5 level (Fed.st.100 level) clean environment, to satisfy the needs of scientific research, production, medical environment, is widely used in industries such as electronics, chemical industry, medical treatment.
So far, the cleaning cover that is used for the local environment air cleaning divides by the classification that drives blower fan, mainly contains two kinds, and a kind of is axial flow blower, promptly belongs to this as the popular FFU of existing market (fan filter unit).But because of being subjected to effects limit such as noise, its air-out wind speed is low, and the outer overbottom pressure of machine is little, and it is little to provide the pressure that overcomes high efficiency particle air filter to fall scope, is only applicable to not have the dividing plate high efficiency particle air filter.And because of the FFU driving force is little, can not be before high efficiency particle air filter device have the fore filter of higher filter effect, with the protection high efficiency particle air filter and prolong its service life.Therefore generally be mainly used in high-level clean room, when using, to return air environmental requirement height as cycle of treatment wind.
And another kind of driving blower fan is a centrifugal blower, overbottom pressure is big outward because of its machine, have the ability to overcome that depth is big, nominal air delivery is big, circulating resistance is big that the dividing plate high efficiency particle air filter is arranged, also can bear simultaneously big resistance, filter efficiency is higher, even have just effect, middle effect two-stage fore filter, and can be directly used in the high-level cleaner of introducing outdoor new wind, restriction is little relatively to the air intake quality.Fig. 1 shows the clean cover 1 of the basic model that typically disposes centrifugal blower in the market, mainly by plenum chamber 11, air box 12, centrifugal blower 13, prefilter 14 and high efficiency particle air filter 15 constitute, during work, under the centrifugal blower suction, air enters air box through prefilter 14, and be blown into plenum chamber by the centrifugal blower air outlet, send clean gas flow through improving static pressure and current stabilization from high efficiency particle air filter.Dispose the clean cover of other forms of centrifugal blower as the clean cover of flow pattern etc. that looses in the existing market in addition, but the plenum chamber of the clean cover of existing centrifugal blower formula is square, the airflow path that this vertical bending structure forms makes air-flow need carry out 90 ° and turns to output, easily form eddy current, it is inhomogeneous to use the wind speed degree, influences the effect of way flow, obviously weakens clean cover row for the contaminated air ability, and noise is big, and it is big to take up space.
The utility model content
Main purpose of the present utility model is at the problems referred to above, single centrifugal blower formula and the clean cover of the equal flow pattern of two centrifugal blower formulas are provided, by adopting centrifugal blower, change the plenum chamber shape and set up stationary blade blinds current equalizer, improve the high efficiency particulate air filter windward side uniformity of static pressure distribution everywhere, make the more even and reduction noise of air-out wind speed, reduce volume, save the space.
The technical scheme that its technical problem that solves the utility model adopts is:
The clean cover of the equal flow pattern of a kind of single centrifugal blower formula, comprise prefilter, centrifugal blower, air box, plenum chamber and high efficiency particle air filter, it is characterized in that described prefilter and high efficiency particle air filter are symmetrical arranged as the top and the bottom centre of described clean cover respectively, described air box is arranged on the prefilter downside, and described centrifugal blower is corresponding with prefilter to be lain in a horizontal plane in the air box; Three sidewalls that corresponding centrifugal blower air outlet and both sides sealing thereof are connected in the plenum chamber between prefilter and the high efficiency particle air filter are the slope shape with slick and sly knuckle.
On described centrifugal blower air outlet, be provided with blade and be the stationary blade blinds current equalizer that becomes inclination angle divergent shape arrangement along the air outlet vertical plane.
Described prefilter and high efficiency particle air filter are symmetrical arranged as the top and the bottom centre of described clean cover respectively, described air box is arranged on the prefilter downside, and two described centrifugal blowers are arranged in the air box towards phase inverse correspondence prefilter horizontal symmetrical with its air outlet; It is slope shape with slick and sly knuckle that corresponding two centrifugal blower air outlets and both sides sealing thereof are connected in plenum chamber four sides sidewall between prefilter and the high efficiency particle air filter.
On described centrifugal blower air outlet, be provided with blade and be the stationary blade blinds current equalizer that becomes inclination angle divergent shape arrangement along the air outlet vertical plane.
The beneficial effects of the utility model are: select the slow-speed of revolution for use, and the outer rotor centrifugal blower of low noise, both body was light in a small amount, and the bigger outer overbottom pressure of machine can be provided again.The configuration of this blower fan has solved clean cover to air quantity, blast and air-out wind speed and the requirement of more high efficiency prefilter is arranged; In addition, unlike the prior art, corresponding centrifugal blower air outlet of plenum chamber of the present utility model and side walls thereof are the slope shape with slick and sly knuckle, having formed along flow channel surface and be the housing of smooth curved surface, is the variable cross-section plenum chamber, has improved airflow path, windage reduces, eddy current reduces, and makes high efficiency particle air filter windward side static pressure everywhere more even, high efficiency particle air filter everywhere to go out wind speed also more even; Reduced volume save the space, and rigidity is stronger, is convenient to large-scale production; Be provided with the irregular stationary blade blinds of the blade tilt current equalizer that is complementary with variable cross-section plenum chamber airflow path, in order to dredging flow, make the high efficiency particulate air filter windward side everywhere static pressure distribution get more even, thereby the air-out wind speed is more even and noise reduces.
Description of drawings
Fig. 1 is the main sectional structure schematic diagram of looking of the clean cover of the basic model of existing configuration centrifugal blower;
Fig. 2 is the main sectional structure schematic diagram of looking of the clean cover of the equal flow pattern of single centrifugal blower formula;
Fig. 3 is the vertical view of the clean cover of the equal flow pattern of single centrifugal blower formula;
Fig. 4 is the main sectional structure schematic diagram of looking of the clean cover of the equal flow pattern of two centrifugal blower formulas;
Fig. 5 is the vertical view of the clean cover of the equal flow pattern of two centrifugal blower formulas.
Among the figure: 11 plenum chambers, 12 air boxes, 13 centrifugal blowers, 14 prefilters, 15 high efficiency particle air filters; The clean cover of the equal flow pattern of 2 single centrifugal blower formulas, 21 air boxes, 22 prefilters, 23 centrifugal blowers, 24 blinds current equalizers, 25 plenum chambers, 26 the ears of an ox or cows, 27 high efficiency particle air filters; 3 pairs of clean covers of the equal flow pattern of centrifugal blower formula, 31 air boxes, 32 prefilters, 33-1 centrifugal blower, 33-2 centrifugal blower, 34-1 blinds current equalizer, 34-2 blinds current equalizer, 35 plenum chambers, 36 the ears of an ox or cows, 37 high efficiency particle air filters.
Below in conjunction with drawings and Examples the utility model is described in detail.
The specific embodiment
Embodiment 1
Fig. 2～Fig. 3 shows the clean cover 2 of the equal flow pattern of a kind of single centrifugal blower formula, comprises prefilter 22, centrifugal blower 23, air box 21, plenum chamber 25 and high efficiency particle air filter 27, and is lifted on places such as clean room or workbench top by the ears of an ox or cow 26; It is characterized in that above-mentioned prefilter 22 and high efficiency particle air filter 27 are symmetrical arranged as the top and the bottom centre of above-mentioned clean cover respectively, above-mentioned air box 21 is arranged on prefilter 22 downsides, above-mentioned centrifugal blower 23 and prefilter 22 corresponding lying in a horizontal plane in the air box 21; Three sidewalls that corresponding centrifugal blower 23 air outlets and both sides sealing thereof are connected in the plenum chamber 25 between prefilter 22 and the high efficiency particle air filter 27 are the slope shape with slick and sly knuckle.Above-mentioned centrifugal blower air outlet is provided with blade and is the stationary blade blinds current equalizer 24 that becomes inclination angle divergent shape arrangement along the air outlet vertical plane.Here, the angle of inclination of each blade is irregular, determines according to the result to the air-flow test, and it is fixing to become inclination angle vane group merging by multi-disc, forms fixed blade blinds current equalizer.
The utility model is selected the slow-speed of revolution for use, the outer rotor centrifugal blower of low noise, and both body is in a small amount light, can provide the bigger machine that reaches 320-400Pa outer overbottom pressure again, than high about one times of the overbottom pressure of conventional axial flow blower.The configuration of this blower fan has solved clean cover to air quantity, blast and air-out wind speed and the requirement of more high efficiency prefilter is arranged.In addition, different with the airflow path of the cleaning cover that has the configuration centrifugal blower now with the plenum chamber shaped design, three sidewalls of plenum chamber 25 corresponding centrifugal blower air outlets of the present utility model and both sides thereof are the slope shape with slick and sly knuckle, the one side opposite perpendicular shared that be air box 21 with plenum chamber 25 with air outlet, plenum chamber has formed along the flow channel surface and has been the housing of smooth curved surface, this plenum chamber is the variable cross-section plenum chamber, improved flow channel, air communication is out-of-date, windage reduces, eddy current reduces, make high efficiency particle air filter windward side static pressure everywhere more even, high efficiency particulate air filter everywhere to go out wind speed also more even, reach the requirement of wind speed relative standard deviation S≤15% of the American National environmental balance NEBB of office (National Environment Balance Bureau) regulation; Volume has not only been dwindled in novel plenum chamber housing design, save the space, and rigidity is stronger, is convenient to adopt mould to accomplish scale production.
In addition, the utility model also is provided with the irregular stationary blade blinds of the blade tilt current equalizer that is complementary with above-mentioned plenum chamber airflow path, in order to dredging flow, make the high efficiency particulate air filter windward side everywhere static pressure distribution get more even, thereby the air-out wind speed is more even and noise is little.
The single centrifugal blower air output that adopts in this example is
Multiple sizes such as the 610*610 of configurable GB-01, GB-03 type, 610*1220 the dividing plate high efficiency particle air filter arranged.In addition, centrifugal blower has adopted the suspended spring of conventional use and rubber cushion (not shown) to carry out dual damping and silencing, so the complete machine operation is more steady, and noise is low.
Embodiment 2
Fig. 4～Fig. 5 shows a kind of pair of clean cover 3 of the equal flow pattern of centrifugal blower formula, comprise prefilter 32, centrifugal blower 33-1,33-2, air box 31, plenum chamber 35 and high efficiency particle air filter 37, it is characterized in that above-mentioned prefilter 32 and high efficiency particle air filter 37 are symmetrical arranged as the top and the bottom centre of described clean cover respectively, above-mentioned air box 31 is arranged on prefilter 32 downsides, and two above-mentioned centrifugal blower 33-1,33-2 are arranged in the air box 31 towards phase inverse correspondence prefilter horizontal symmetrical with its air outlet; The air outlet of corresponding two centrifugal blower 33-1,33-2 and both sides sealing thereof be connected between prefilter 32 and the high efficiency particle air filter 37 plenum chamber on four sides sidewall be slope shape with slick and sly knuckle.
On above-mentioned centrifugal blower 33-1,33-2 air outlet, be respectively equipped with blade and be stationary blade blinds current equalizer 34-1, the 34-2 that becomes inclination angle divergent shape arrangement along the air outlet vertical plane.
The two centrifugal blower air-supply total amounts that adopt in this example are 2000-3000m
3/ h.Blower fan total head 320-400Pa, noise≤50dB (A).
The clean cover 3 of the equal flow pattern of two centrifugal blower formulas that present embodiment provides is to have adopted two centrifugal blowers on the structure with the difference of embodiment 1, and plenum chamber four sides sidewall is the slope shape with slick and sly knuckle; Its operation principle and beneficial effect are identical with embodiment 1.
In actual applications, according to the size and the correlation engineering condition of clean room, single centrifugal blower formula that the utility model provides and the clean cover of the equal flow pattern of two centrifugal blower formulas can be used in the various combination mode.
Claims (4)
1. the equal flow pattern cleaning of single centrifugal blower formula is covered, comprise prefilter, centrifugal blower, air box, plenum chamber and high efficiency particle air filter, it is characterized in that described prefilter and high efficiency particle air filter are symmetrical arranged as the top and the bottom centre of described clean cover respectively, described air box is arranged on the prefilter downside, and described centrifugal blower is corresponding with prefilter to be lain in a horizontal plane in the air box; Three sidewalls that corresponding centrifugal blower air outlet and both sides sealing thereof are connected in the plenum chamber between prefilter and the high efficiency particle air filter are the slope shape with slick and sly knuckle.
2. the clean cover of the equal flow pattern of single centrifugal blower formula according to claim 1 is characterized in that being provided with blade and is the stationary blade blinds current equalizer that becomes inclination angle divergent shape arrangement along the air outlet vertical plane on described centrifugal blower air outlet.
3. the equal flow pattern cleaning of two centrifugal blower formulas is covered, comprise prefilter, centrifugal blower, air box, plenum chamber and high efficiency particle air filter, it is characterized in that described prefilter and high efficiency particle air filter are symmetrical arranged as the top and the bottom centre of described clean cover respectively, described air box is arranged on the prefilter downside, and two described centrifugal blowers are arranged in the air box towards phase inverse correspondence prefilter horizontal symmetrical with its air outlet; It is slope shape with slick and sly knuckle that corresponding two centrifugal blower air outlets and both sides sealing thereof are connected in plenum chamber four sides sidewall between prefilter and the high efficiency particle air filter.
4. the clean cover of the equal flow pattern of single centrifugal blower formula according to claim 1 is characterized in that being provided with blade and is the stationary blade blinds current equalizer that becomes inclination angle divergent shape arrangement along the air outlet vertical plane on described centrifugal blower air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201294391U CN201652723U (en) | 2010-03-12 | 2010-03-12 | Single centrifugal fan type and double centrifugal fan type current equalizing clean cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201294391U CN201652723U (en) | 2010-03-12 | 2010-03-12 | Single centrifugal fan type and double centrifugal fan type current equalizing clean cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201652723U true CN201652723U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201294391U Expired - Lifetime CN201652723U (en) | 2010-03-12 | 2010-03-12 | Single centrifugal fan type and double centrifugal fan type current equalizing clean cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201652723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196519A (en) * | 2015-05-07 | 2016-12-07 | 河北航安智能科技有限公司 | A kind of static pressure control wind air purification method |
-
2010
- 2010-03-12 CN CN2010201294391U patent/CN201652723U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196519A (en) * | 2015-05-07 | 2016-12-07 | 河北航安智能科技有限公司 | A kind of static pressure control wind air purification method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |