Background technology
Generally speaking, cyclone dust collecting unit is: utilize the cyclonic separation principle, separate and the control of dust air in the device of the dust (below be called " foreign matter ") that contains.Here, above-mentioned cyclone dust collecting unit is mainly used in vacuum cleaner.
Recently, in order further to improve dust collecting performance, the multi-cyclone dust collector (Multi Cyclone Collector) that a plurality of cyclones are connected together and use has appearred on the market.
Here, above-mentioned multi-cyclone dust collector is to comprise as lower member to constitute: after sucking the air comprise dust etc., and the upstream side cyclone of the dust that the control of dust volume is bigger (upstream cyclone); Be connected with above-mentioned upstream side cyclone, and the downstream side cyclone (downstream cyclone) of the less dust of control of dust volume.
Under normal conditions, 1 upstream side cyclone and 1 downstream side cyclone are installed in the above-mentioned multi-cyclone dust collector.But, the situation that also useful a plurality of small-sized cyclones replace the downstream side cyclone to use.Here, an embodiment of above-mentioned multi-cyclone dust collector has been disclosed in Japanese Utility Model publication communique 52-14775.
Below, with reference to Fig. 1, the multi-cyclone dust collector of foundation prior art is described in detail.
Above-mentioned multi-cyclone dust collector is to comprise as lower member to constitute: after sucking contaminated air from the outside, the cyclone 1 of the dust that the control of dust volume is bigger (below, be called " 1 whirlwind dust collecting part "); Be connected with above-mentioned cyclone 1, and the cyclone 3 of the less dust of control of dust volume (below, be called " 2 whirlwind dust collecting part ").Here, the set that is a plurality of small-sized cyclones of 2 whirlwind dust collecting part 3 in the above-mentioned multi-cyclone dust collector.
More detailed explanation said structure is as follows.
At first, the outer periphery of 1 whirlwind dust collecting part 1 is provided with whirlwind dust collecting part 32 times.Here, above-mentioned 2 whirlwind dust collecting part 3 are to be made of a plurality of small-sized cyclones.
Then, the top of the 1st main body 12 of above-mentioned 1 whirlwind dust collecting part 1 is formed with the 1st inflow portion 11.Here, the effect of above-mentioned the 1st inflow portion 11 is as follows: suck the contaminated air in outside to tangential direction.In addition, the general central part of above-mentioned 1 whirlwind dust collecting part inside is formed with the 1st outflow portion 14.Here, the effect of above-mentioned the 1st outflow portion 14 is as follows: discharging to 2 whirlwind dust collecting part 3 through a filtered air.Detailed says, above-mentioned the 1st outflow portion 14 presents drum usually, and its underpart 14b is in open state, and the periphery of top 14a is in closed state.In addition, difference according to circumstances can be provided with filter 16 on the peristome 14b of bottom.
In addition, above-mentioned 2 whirlwind dust collecting part 3 are arranged on a plurality of small-sized cyclone of the outer periphery of above-mentioned 1 whirlwind dust collecting part 1 in fact.Certainly, each 2 whirlwind dust collecting part 3 also possesses the 2nd inflow portion (not shown) and the 2nd outflow portion 34.
Then, under normal conditions, be formed with cushion space 56 between above-mentioned 1 whirlwind dust collecting part 1 and 2 whirlwind dust collecting part 3, cause the air that flows out from above-mentioned 1 whirlwind dust collecting part 1 via above-mentioned cushion space 56 after, flow into whirlwind dust collecting part 32 times.
And the discharge space 52 that is connected with the 2nd outflow portion 34 of a plurality of 2 whirlwind dust collecting part 3 will be positioned at the top of above-mentioned 2 whirlwind dust collecting part 3.Therefore, air via above-mentioned discharge space 52 after, be discharged to the outside by discharge pipe 54.The Reference numeral 5 that does not describe is the shells (case) of accommodating above-mentioned 1 whirlwind dust collecting part 1 and 2 parts such as whirlwind dust collecting part 3.
Below, with the effect of the above-mentioned multi-cyclone dust collector according to prior art of explanation.
At first, in case drive above-mentioned multi-cyclone dust collector, inhalation power generating apparatus [for example, the suction fan (not shown) of vacuum cleaner] will start thereupon.Then, Wai Bu contaminated air will flow into the inside of above-mentioned 1 whirlwind dust collecting part 1 by the 1st inflow portion 11 of above-mentioned 1 whirlwind dust collecting part 1.At this moment, outside contaminated air will suck to tangential direction, and along the inner surface rotation of the 1st main body 12 of above-mentioned 1 whirlwind dust collecting part 1.Therefore, in the middle of this process, because action of centrifugal force, the dust that contains in the air of the inner surface rotation of the 1st main body 12 of above-mentioned 1 whirlwind dust collecting part 1 is with separated.
At this moment, the heavier dust of the big weight of volume is with the bottom of control of dust in above-mentioned 1 whirlwind dust collecting part 1.In addition, the little dust that can't separate rises behind above-mentioned 1 whirlwind dust collecting part, 1 inner rotation number bout, discharges by above-mentioned the 1st outflow portion 14 then.
In addition, the air that includes little dust of discharging from above-mentioned 1 whirlwind dust collecting part 1 (below, be called " the contaminated air of part) will flow into the inside of the 2nd main body 32 of above-mentioned 2 whirlwind dust collecting part 3 by the 2nd inflow portion (not shown).
Then, in above-mentioned 2 whirlwind dust collecting part 3, experience the minute dust detached job of air once more, above-mentioned purify air with successively via the 2nd outflow portion 34, discharge space 52, discharge pipe 54, be discharged to the outside.
But, in sum there are the following problems according to the multi-cyclone dust collector of prior art.
The 1st, in the multi-cyclone dust collector of foundation prior art, flow into the bottom that air in the 1st main body 12 of above-mentioned 1 whirlwind dust collecting part 1 will drop to the 1st outflow portion 14, therefore the dust in the bottom space of control of dust above-mentioned the 1st main body 12 in has disperse again possible.
The 2nd, the air that flow into the 1st main body 12 inside by the 1st inflow portion 11 will rise after will falling to the bottom of above-mentioned the 1st outflow portion 14, be discharged to the outside of above-mentioned the 1st main body 12 then by above-mentioned the 1st inflow portion 11, therefore with the problem of initiation pressure loss.Will reduce suction efficiency like this.
The 3rd, in the multi-cyclone dust collector of foundation prior art, when the filter 16 of the 1st outflow portion 11 that is arranged on 1 whirlwind dust collecting part 1 stops up, will produce serious pressure loss phenomenon, therefore brought out the reduction of inhalation power and the decline of dust collecting performance.
The specific embodiment
Below, will embodiments of the invention be described in detail with reference to the accompanying drawing 2 that provides to Fig. 5.
At first, be to comprise as lower member to constitute according to multi-cyclone dust collector of the present invention: 1 whirlwind dust collecting part 100; 2 whirlwind dust collecting part 200 that are connected with above-mentioned 1 whirlwind dust collecting part 100.Here, above-mentioned 1 the whirlwind dust collecting part 100 according to multi-cyclone dust collector of the present invention includes: parts such as the 1st inflow portion the 110, the 1st main body 120, dust bucket 130, extension the 150, the 1st outflow portion 140.
Here, above-mentioned the 1st inflow portion 110 is as the position that sucks air from the outside, though not expression in the drawings, above-mentioned the 1st inflow portion 110 is connected with the suction hose that constitutes vacuum cleaner.
Then, above-mentioned the 1st main body 120 will form: isolate the space by the foreign matter that contains from above-mentioned the 1st inflow portion 110 leaked-in airs.
At this moment, above-mentioned the 1st inflow portion 110 following connections: promptly, make flowing of air, form to tangential direction for above-mentioned the 1st main body 120.
Here, above-mentioned the 1st main body 120 can form diversified shape, but preferably forms the drum shape that inner surface presents curved surface.
Then, above-mentioned dust bucket 130 will form along the lateral space in the bottom space of above-mentioned the 1st main body 120.Here, above-mentioned dust bucket 130 is collected in formation in the space of above-mentioned the 1st main body 120 inner isolated foreign matters.
Expansion forms above-mentioned dust bucket 130 to the side of above-mentioned the 1st main body 120, when therefore can increase the space of the big relatively foreign matter of collected volume to greatest extent, can also prevent to be collected in dispersing again of foreign matter in above-mentioned dust bucket 130 inner spaces.
Certainly, in order further to enlarge the space of collecting above-mentioned foreign matter, can further increase the height of the 1st main body 120.But,, therefore be difficult to increase the height of the 1st main body 120 owing to define the whole height of the vacuum cleaner of common suitable multi-cyclone dust collector.
Moreover, further enlarge the space of above-mentioned collection foreign matter by the diameter of above-mentioned the 1st main body 120 of further increase.But, in this case, be to be cost with the installing space that reduces above-mentioned 2 whirlwind dust collecting part 220.
Therefore, as embodiments of the invention are described,, can make the bottom outer space of the 1st main body 120 constitute the formation dust bucket 130 in the control of dust space of foreign matter in order not influence the installing space of above-mentioned 2 whirlwind dust collecting part 200.Preferably make the control of dust space of whole foreign matter more become big here.Certainly, though not expression in the drawings, the inner space of above-mentioned dust bucket 130 can be connected with the position that the foreign matter that forms above-mentioned 2 whirlwind dust collecting part 200 is discharged.
Especially, in an embodiment of the present invention, be provided with more than one rib 131 at least on dust bucket 130 inner spaces of said structure.
Detailed says, the effect of above-mentioned rib 131 is as follows: can be reduced in the rotational flow of the foreign matter of control of dust on the inner space of above-mentioned dust bucket 130, and can farthest reduce the phenomenon of dispersing again of above-mentioned foreign matter, and probably be made of thin plate.
At this moment, above-mentioned rib 131, the formation of its wider width, and present the plate shape of thickness relative thin.Here, shown in the significant points profile of Fig. 3, above-mentioned rib 131 preferably is in following installment state: the face of the formation width of above-mentioned rib 131 towards on the mobile stream of above-mentioned foreign matter with above-mentioned (arrow in the accompanying drawing) direction vis-a-vis that flows, promptly towards cutting off above-mentioned mobile direction.
Then, above-mentioned extension 150 is that the bottom surface from above-mentioned the 1st main body 120 prolongs downwards, thereby is positioned at the inboard of above-mentioned dust bucket 130.In addition, on above-mentioned extension 150, be formed with the more than one foreign matter tap 151 that can be communicated with at least with the inner space of above-mentioned dust bucket 130.
Here, above-mentioned extension 150 preferably walks to become narrow more from past more its underpart, the bottom surface of above-mentioned the 1st main body 120.Its reason is as follows: in order to discharge along the foreign matter of the inner surface rotational flow of above-mentioned extension 150 by above-mentioned foreign matter tap 151 more smoothly.
At this moment, above-mentioned foreign matter tap 151 can be formed by simple through hole.But,, the side face of above-mentioned extension 150 is formed foreign matter tap 151 along the long incision of its short transverse in order better to discharge foreign matter.Here, symmetrical position preferably is provided with an above-mentioned foreign matter tap 151 separately.
Then, above-mentioned the 1st outflow portion 140 is arranged on the center side space in above-mentioned the 1st main body 120, and above-mentioned the 1st outflow portion 140 functions as follows: the flow direction when guiding is flowed out in order to make the air that flow in above-mentioned the 1st main body 120 flow out to above-mentioned 2 whirlwind dust collecting part 200.
Here, above-mentioned the 1st outflow portion 140 presents past more its bottom and walks the cone shape that narrows down more.What be provided with like this reasons are as follows: in order to make the rotational flow that also can carry out foreign matter in the lower space in the 1st main body 120 smoothly.
Certainly, as shown in Figure 4, above-mentioned the 1st outflow portion 140 can constitute, the drum shape that the internal diameter of upper space and lower space is identical.
Especially, above-mentioned the 1st outflow portion 140 is characterized in that comprising: periphery is formed with the porous portion 141 of a plurality of through hole 141a; What through hole was not set is in non-porous 142 of closed state.And its bottom surface forms the barrel-shaped shape of sealing.
Above-mentioned the 1st outflow portion 140 will possess following structure: can keep under the situation of original dust collecting performance the phenomenon of the loss of can releasing the pressure.Flow into the air of 1 main body, 120 inside, the above-mentioned end by above-mentioned the 1st inflow portion 110, even do not drop to the bottom of above-mentioned the 1st outflow portion 140, air is flowed out, the loss phenomenon of therefore can releasing the pressure.
Certainly, according to the 1st outflow portion 14 of 1 whirlwind dust collecting part 1 of prior art, its underpart is in open state, and top is in the state that does not have through hole.Here, its reason is described below: if want to utilize the principle of cyclonic separation to collect dust, make leaked-in air at first isolate dust to the bottom rotation with regard to needs, air is risen from general central part once more, discharge afterwards along the inner surface of the 1st main body 12.Therefore, thought in the past, can only seal the top of the 1st outflow portion 14.But, as embodiments of the invention are described, seal the bottom of the 1st outflow portion 140 of 1 whirlwind dust collecting part 100, and form a plurality of through hole 141a on top, also can the effective collection dust.And, since above-mentioned formation, the loss that can also release the pressure.
And the porous portion 141 of above-mentioned the 1st outflow portion 140 probably is positioned at the upper side position of the center side of above-mentioned the 1st outflow portion 140, and non-porous 142 lower position that is positioned at above-mentioned center side, and as feature.
If the bottom of above-mentioned the 1st outflow portion 140 also is formed with a plurality of through hole 141a, influence owing to the ascending air that is subjected in the lower side space of above-mentioned the 1st outflow portion 140, producing, the discharge process of foreign matter will very easily realize, and owing to the air inhalation power in the lower through-hole that results from above-mentioned the 1st outflow portion 140, foreign matter can't descend along the inner surface in the 1st main body 120 and be fused to easily in the air-flow that produces owing to above-mentioned air inhalation power, is worthless structure therefore.
Especially, as shown in Figure 5, the lower end of above-mentioned the 1st outflow portion 140 is preferably until the long formation in the inner space of above-mentioned extension 150.It is the reasons are as follows: promptly, flow along its surface to greatest extent in order to make the foreign matter that flows in the inner space of extension 150.
Then, compare with above-mentioned 1 whirlwind dust collecting part 100 according to 2 whirlwind dust collecting part 200 of the embodiment of the invention and have: relative miniaturization and its number are more than one difference at least.Here, according to 2 whirlwind dust collecting part 200 of the embodiment of the invention separately along the outer periphery setting of above-mentioned 1 whirlwind dust collecting part 100.
The effect of above-mentioned 2 whirlwind dust collecting part 200 is as follows: isolate the small foreign matter and the control of dust that contain from the air that above-mentioned 1 whirlwind dust collecting part 100 is discharged once more.Here, therefore the overall structure of above-mentioned 2 whirlwind dust collecting part 200 omits the detailed description to its structure with identical according to prior art constructions.
Then, the Reference numeral 500 that does not describe is: the shell of accommodating 1 whirlwind dust collecting part 100 and 2 parts such as whirlwind dust collecting part 200.
Below, with the effect that describes in detail in sum according to the embodiment of multi-cyclone dust collector of the present invention.
At first, in case multi-cyclone dust collector drives, outside contaminated air will be drawn into the inside of the 1st main body 120 by the 1st inflow portion 110 of 1 whirlwind dust collecting part 100.
At this moment, outside contaminated air is owing to be that tangential direction to the 1st main body 120 sucks, therefore itself effect there is centrifugal force, cause because above-mentioned centrifugal force, weight is heavier, the dust that volume ratio is bigger can separate from air, and then will descend along the inner surface of above-mentioned the 1st main body 120.
The dust of above-mentioned separation will be provided to the extension 150 of prolongation in the bottom of the 1st main body 120.Then, in the inner surface process of flowing of above-mentioned extension 150, be discharged to the inner space of dust bucket 130 and be collected by each foreign matter tap 151.And include the air of minute dust, that is, the part contaminated air will be discharged by the 1st outflow portion 140.
At this moment, above-mentioned dust bucket 130 is owing to be in the state that separates with the bottom space of above-mentioned the 1st main body 120, therefore can prevent to be discharged to disperse again again phenomenon in aforementioned body 120 of foreign matters in the above-mentioned dust bucket 130.
Especially, the foreign matter of control of dust above-mentioned dust bucket 130 in owing to possess in the effect of a plurality of ribs 131 of above-mentioned dust bucket 130 inside can't be along the inner surface rotational flow of above-mentioned dust bucket 130, and the stabilisation of formation air-flow.
At this moment, according to the present invention, in the porous portion 141 as the top of the 1st outflow portion 140, be formed with a plurality of through hole 141a.Then, owing to wholely be in blocked state, therefore the air that enters by above-mentioned the 1st inflow portion 110 will be through more in the past than outflow the 1st main body 120 after the rotation of lacking as non-porous 142 of the bottom.
Air can not flow to the bottom of above-mentioned the 1st outflow portion 140, and the inner space of above-mentioned dust bucket 130 is in the state of cutting apart with above-mentioned the 1st main body 120, therefore can effectively prevent the phenomenon that dust disperses once more.
In addition, in the above-described embodiment, 2 whirlwind dust collecting part 200 of multi-cyclone dust collector are to be made of a plurality of small-sized cyclones.But the present invention only limits to therewith.The present invention also goes for 2 whirlwind dust collecting part are interconnected and the 2 heavy cyclone dust collecting units that form.And the present invention also goes for the single entry cyclone dust collecting unit that only is made of a cyclone dust collecting unit.
In addition, above-mentioned foundation cyclone dust collecting unit of the present invention can be arranged in the vacuum cleaner of filtered version and the upright vacuum and use.