CN2472109Y - Counterbackflow fun assembly for dustless ceiling filtering system - Google Patents

Abstract

The utility model relates to a dust free room ceiling filtering system air return proof type fan combination; wherein, a rotational impeller body is arranged in a body, on which an upper end air inlet chamber and a lower end air outlet chamber are arranged and a filtering net is arranged in the air outlet chamber; a make-and-break type movable fitting is arranged at the inlet of the air inlet chamber and is driven by the air blast force of the fan, so that the inlet of the air inlet chamber is opened; the inlet of the air inlet chamber is automatically closed, when the movable fitting is in the stopping or inverse blow state, to prevent the counter current air flow, and avoid the positive pressure in the dust free room and the great reduction of the cleanliness, and the inversely spreading of the dust on the filtering net. The centralized pollution of the dust during the re-operation is solved by the utility model.

Description

Dust free room ceiling filtration system prevents the counterbackflow type combination of fans

The utility model relates to a kind of dust free room ceiling filtration system and prevents the counterbackflow type combination of fans, refer to especially a kind of specialize in that the dust free room ceiling installs and uses prevent the counterbackflow type combination of fans.

The precision equipment of high-tech industry must be produced in dust free room, to improve yields, reduces cost.

Shown in the 1st figure, the many groups of installing fan 12,120,121,122 on dust free room 10 Ceiling skeletons 11, establish in these fan bodies one can controlled rotation flabellum 13, and screen pack 14 (please cooperate and consult the 2nd figure) is housed at the lower end air outlet, by each group flabellum 13 continuous running, make contained dust 15 attached outstanding what screen pack 14 inner surfaces in the air, with supply dust free room 10 pure airs.Right Hou air-flow from each group fan 12,120,121,122 delivery of filtered, reaches splendid laminar flow circulating effect, to keep the high-cleanness, high of dust free room 10 once more down through hole type raised floor 16, pressure fan 17 and air-return duct 18.

In long-term operation is used, if wherein fan 12 breaks down, or close a part of fan 12 during maintenance, then fan 12 forms open air channel because of shutting down.Up adverse current is by shutting down fan 12 shown in Fig. 3,4 for the air-flow sent of fan 120,121 around this moment, so that the normal pressure of dust free room 10 reduces, and then influences air purity.Especially, up adverse current is when the fan 12 for air, and the dust 15 that blows screen pack 14 inner surfaces flies upward everywhere, and contained dust 151 is that attached work is at screen pack 14 outer surfaces in the counter-flow air on the other hand.Once this fan 12 turns round again, a large amount of dust 151 of outer surface then shown in Figure 5 are blown in the dust free room 10 at once, cause severe contamination, influence yield of products.

And the purpose of this utility model, be to provide a kind of dust free room ceiling filtration system to prevent the counterbackflow type combination of fans, mainly be to dispose an open-close type movable part at the inlet that fan is gone into air compartment, mat fan air-supply strength drives movable part, with open air compartment mouth; And movable part is in fan shutdown or contrary wind state; promptly close inlet automatically into air compartment; prevent air inversion; can avoid dust free room internal positive pressure power and cleanliness factor to reduce significantly; and dust is reverse on the screen pack flies upward; the phenomenon of a large amount of dust concentrated contaminated waters corresponded to actual needs when further solution was turned round again.

For reaching above-mentioned purpose, the utility model dust free room ceiling filtration system prevents that the counterbackflow type combination of fans is at the movable part of going into the two level board sheets that are pivoted on the inlet of air compartment top, these movable parts each with jackshaft as fulcrum, make both medial margins also adjacent mutually, its lateral border is then by putting the what ingress edge, to close inlet.

And in another possible embodiments, this go into air compartment can around the default multiple tracks of wall laterally enter the mouth, the movable part of the inboard vertical panel sheets that respectively are pivoted of these inlets, make movable part with the top axle as fulcrum, to close inlet.

In another possible embodiments, this goes into down many guide rods of drawdown of air compartment top inlet periphery, cooperates the plate-like movable part that enters the mouth to place one, movable part can be risen at the contrary wind state close inlet.

The utility model has following accompanying drawing:

Fig. 1 is the schematic diagram of dust free room fan operating state commonly used.

Fig. 2 is the enlarged drawing of Fig. 1 fan.

Fig. 3 is the schematic diagram that a fan shuts down among Fig. 1.

Fig. 4 is the partial enlarged drawing of Fig. 3.

Fig. 5 is the action diagram of hookup 4.

Fig. 6 is the stereogram of the utility model embodiment fan.

Fig. 7 is the cutaway view that Fig. 6 closes inlet.

Fig. 8 is the schematic diagram that Fig. 7 opens inlet.

Fig. 9 is the stereogram of another embodiment fan of the utility model.

Figure 10 be Fig. 9 close inlet view.

Figure 11 Figure 10 opens the schematic diagram of inlet.

Figure 12 is the cutaway view that the another embodiment fan of the utility model is opened inlet.

Figure 13 is the schematic diagram that Figure 12 closes inlet.

Elaborate to originally making utility model below in conjunction with drawings and Examples:

At first, see also Fig. 6, Fig. 7, the utility model prevents that counterbackflow type fan 20 from being to establish a flabellum 24 that is turned by motor in body 21, and this body 21 has the upper end goes into air compartment 22 and go out air compartment 23 with the lower end, and a screen pack 28 is installed going out air compartment 23.This fan 20 mainly go into air compartment 22 tops make one the inlet 25, and the movable part 30,31 of two levels that be pivoted on 25 that enter the mouth than the thin plate sheet, these movable parts 30,31 each with jackshaft 32 as fulcrum, make lateral margin 33 phases and adjacent within two movable parts 30,31, its lateral border 34 then is placed in the edge 26 of inlet 25.

In flabellum 24 continuous runnings of fan 20, the air-supply strength of mat fan 20 drives two movable parts 30,31, make two movable parts 30,31 with jackshaft 32 as fulcrum, and cooperate inlet 25 place's pins 27 to design, and swing into erectility shown in Figure 8, open the inlet 25 of air compartment 22, down to supply the dust free room pure air.When this fan 20 hinders for some reason or keeps in repair and when shutting down; flabellum 24 stops operating; two movable part gravity of 30,31 mats own and dust free room normal pressures then; and swing returns back to level shown in Figure 7; to close inlet 25 into air compartment 22; prevent air inversion, avoid dust free room normal pressure and cleanliness factor significantly to reduce.

See also Fig. 9,10, this embodiment fan 40 is that wall is respectively established laterally inlet 45,46 of multiple tracks around body 41 is gone into air compartment 42, respectively the be pivoted movable part 50,51 of a vertical panel sheet of these inlet 45,46 inboards, that is respectively enter the mouth and 45,46 have invagination lug 47, with the top axle 52 that articulates movable part 50,51 as fulcrum.

In flabellum 44 continuous runnings of fan 40, the air-supply strength of mat fan 40 drives each movable part 50,51, make these movable parts 50,51 with top axle 52 as fulcrum, and swing into the state that slopes inwardly shown in Figure 11, open air compartment 42 inlet 45,46 all around, make air-flow down by going out air compartment 43, with supply dust free room pure air.When this fan 40 hinders for some reason or keeps in repair and when shutting down, the gravity of each movable part 50,51 mat own, and swing returns back to the plumbness shown in Fig. 9,10, to close into respectively entering the mouth 45,46 around the air compartment 42.

See also Figure 12, this embodiment fan 60 is inlet 65 peripheries many guide rods of drawdown 66 down of going into air compartment 62 tops at body 61, to place the circular hole 71 all around of a plate-like lightweight plate movable part 70, and locate backstop down by 67 conducts of guide rod 66 bottom nuts, 64 continuous runnings of mat flabellum, make air-flow down by going out air compartment 63, with supply dust free room pure air.When this fan 60 hinders for some reason or keeps in repair and when shutting down, then send under air-flow and the dust free room positive pressure 600,601 of its adjacent fans, movable part 70 can be risen at the contrary wind state, close as shown in figure 13, close inlet 65 into air compartment 62.In preferred embodiment, can be wholely set protuberance 72 on the hollow in these movable part 70 centre positions.

Comprehensive the above; the utility model dust free room ceiling filtration system prevents that the counterbackflow type combination of fans is under fan failure or maintenance shutdown; can close inlet automatically into air compartment; prevent air inversion; avoid dust free room internal positive pressure power and cleanliness factor to reduce significantly, and dust is reverse on the screen pack flies upward everywhere, the phenomenon of a large amount of dust concentrated contaminated waters when further solution is turned round again; correspond to actual needs, can utilize on the industry.

Claims (5)

1. a dust free room ceiling filtration system prevents the counterbackflow type combination of fans, is the flabellum of establishing a controlled rotation in body, and this body has the upper end and goes into air compartment and the lower end goes out air compartment, and goes out air compartment screen pack is installed; Its characteristic is:

The inlet that this fan is gone into air compartment disposes an open-close type movable part at least, and mat fan air-supply strength drives movable part, to open the inlet of air compartment; And movable part is closed the inlet into air compartment automatically in fan shutdown or contrary wind state.

2. dust free room ceiling filtration system as claimed in claim 1 prevents the counterbackflow type combination of fans, its characteristic is: this goes into the movable part of the two level board sheets that are pivoted on the inlet of air compartment top, these movable parts each with jackshaft as fulcrum, make both medial margins also adjacent mutually, its lateral border is then by putting the what ingress edge, to close inlet.

3. dust free room ceiling filtration system as claimed in claim 1 prevents the counterbackflow type combination of fans, its characteristic is: this is gone into around the air compartment wall and respectively establishes complex trace and laterally enter the mouth, respectively the be pivoted movable part of a vertical panel sheet of these inlet inboards, movable part then mat top axle as fulcrum, to close inlet.

4. dust free room ceiling filtration system as claimed in claim 1 prevents the counterbackflow type combination of fans, its characteristic is: this goes into down many guide rods of drawdown of air compartment top inlet periphery, cooperate the plate-like movable part that enters the mouth to place one, movable part can be risen at the contrary wind state close inlet.

5. dust free room ceiling filtration system as claimed in claim 4 prevents the counterbackflow type combination of fans, and its characteristic is: protuberance on the default hollow in the middle of this plate-like movable part.

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