DE10133499B4 - Wet vacuum with mist eliminator - Google Patents

Abstract

Wet vacuum cleaner with mist eliminator, in particular for filtering explosive and / or for the health and / or harm the environment Particles through guiding of the loaded with these particles suction air flow through and / or over a Liquid bath (23), in particular containing water, characterized in that the Mist separator substantially as provided with openings (22) Drop stopper pot (1) is formed, which defines a cavity, with which he is installed in the sucker against the water bath, the moist air flow from below into the drop stopper pot (1) flows in, first meets the drop deflector pot (1) and now a change of direction experiences in the direction of the openings (22) and emerges through this.

Description

The The invention relates to a wet vacuum cleaner with mist eliminator the preamble of claim 1.

Similar Wet vacuum cleaners are described in WO-98/19587 A1, WO-94/17717 A1 and US-4,547,206 A has become known.

Of the Droplet separator of the wet vacuum cleaner of US-4,547,206 A is conical trained and is in the water chamber upside down above the water level arranged, so with its cone tip down and its cone base pointing upwards. There is an opening in the bottom cone tip by which accumulated above the droplet condensate back to the water chamber is directed. Furthermore, in the cone jacket of the droplet Durchbrechungen arranged, however only on the half 180 ° coat and the other half 180 ° coat is formed closed without openings. The closed one 180 ° Coats Located at the suction tube inlet, allowing a high vacuum of too much water in the direction of the suction motor is thereby avoided. Disadvantage is that moist suction air partly directly through the openings of the half 180 ° cone sheath the droplet is sucked in the direction of the engine without Condensate release, and only partially directly on the cone jacket directly meets to give off condensation before they dry off the openings are sucked towards the engine. By on the Head-shaped cone shape of the droplet separator with openings only in half 180 ° -Konusmantel is the Deposition effect therefore insufficient.

Of the Droplet separator of the wet vacuum cleaner of WO-98/19587 A1 has three stages formed, wherein in the flow direction the moist suction air stream three baffles as a mist eliminator nested coaxially with each other lying one behind the other are arranged. All three baffles are conical or funnel-shaped formed, wherein the first and third baffle closed in itself open without openings and down to the pool, and the intermediate second baffle plate upside down in the top with a big one cylindrical passage opening but is formed without openings in the jacket and from the Water basin opens off. The first and third baffle thereby cover the radial Through opening at the cone tip of the second baffle. The moist suction air flow is between the conical outer shell the first baffle and the cone tip opening of the second baffle passed through and passes disadvantageously partially directly in the direction of the engine, but sometimes also under condensation on the lower surface the third baffle and flows slightly drier from the interior of the third baffle around their Cone shell surfaces around, to be sucked also in the direction of the engine. By the cascade-like arrangement of the cone-shaped baffles of the mist eliminator and the targeted guidance of the moist suction air stream thus achieved Although the condensation efficiency compared to a simple baffle plate elevated, But it can on the one hand directly humid suction in the direction of the engine arrive and also lacks an increase in the flow velocity and thus a decrease in the static pressure of the humid Air flow and thus to an additional condensation separation. The deposition effect of this mist eliminator is therefore insufficient.

Of the The mist eliminator of the wet vacuum cleaner of WO-94/17717 A1 is likewise known constructed cascade-like, with three in the flow direction of the moist suction air stream consecutive conical baffles. The first downstream Baffle plate is away from the liquid receiver funnel-shaped provided tapered, arranged in the top of a cylinder tube is, in which the second baffle is, the one for first deflecting plate has opposite conicity. Downstream of second baffle is the third baffle, the as the first baffle plate with its cone base facing the liquid catcher is and the second baffle covered radially. The with the aufzusaugenden liquid loaded suction air is first over the Intake manifold of the wet vacuum cleaner in an annular space of the droplet separator guided and enters the liquid collecting container, where most of the liquid is unloaded. The moist suction air is then passed over the three cascades of the mist eliminator sucked and from there into a subsequent cylinder space, which with the motor housing connected is. While the impact of the moist suction air on the self-contained Coats (without perforations) of the conical baffles of the droplet, condensed Although a part of the liquid from the suction air and drips back into the liquid collecting container, however again there is an increase the flow velocity and thus a decrease in the static pressure of the humid Air flow and thus to an additional condensation separation. The deposition effect of this droplet is therefore also insufficient.

Such a wet vacuum cleaner is also known, for example, with the subject of their own DE-GM 93 12 156. The nipple mentioned there is mainly used to aspirate ex plosive dusts, with the aim of avoiding self-ignition of such dusts.

For this beats the utility model DE-GM 93 12 156 a so-called mist eliminator before, but only in the form of a simple baffle plate is. However, the deposition effect of this mist eliminator is insufficient.

Of the The invention is therefore based on the object, a sucker of the above so-called type so that it with a much higher separation efficiency is working.

to solution the object is the invention characterized in that that the mist eliminator substantially as provided with openings Drop stopper pot is formed, which defines a cavity, with which he is installed in the sucker against the water bath, the moist air flow from below into the drop stopper pot into flows, first meets the drop deflector pot and now a change of direction experiences in the direction of the openings and emerges through this.

With the given technical teaching gives the essential advantage that now formed by the formation of the droplet as hollow Drop stopper pot a much better separation efficiency is achieved.

The Breakthroughs of the droplet deflector pot are in this case arranged such that the humid air flow first meets the drop deflector pot, there already by temperature difference a partial condensation takes place, and then the humid air flow a change of direction in Direction of the openings learns and he made these out of the cavity of the drip cup on the outside flows, causing an increase the flow velocity and the associated static pressure drop a further partial condensation takes place.

At the outer surface of the Drop stopper pot then becomes the moist airflow due to the suction effect sucked along the Saugerturbine, which Saugerturbine about centrally located above the drop deflector pot.

Prefers In this case, we think that the drop deflector pot is approximately cylindrical is, whose lateral surface is limited by a frontal cover plate. An effective Separation effect is achieved if only in the lateral surface of the Breakthroughs are provided.

Of course you can the entire hollow Tropfenabweisertopf or only the cover plate take other forms, e.g. Partial spherical shape, conical shape or Partial conical or elliptical, parabola, hyperbole Shapes or the like. In the following, only on a Tropfenabweisertopf with cylindrical tube lateral surface and frontal cover plate reference, but not limiting for the invention should be.

By the surrounding wall surface (Sheath surface), in which the openings are preferably arranged evenly distributed and to which the deflector plate (frontal cover plate) connects, So there is the significant advantage that now loaded with water droplets Air, which flows from below into the pot, now through the arranged in the wall surface Breakthroughs must emerge and this is deflected.

It So is through the openings in the wall surface a Deflection effect on the water droplets laden with airflow achieved in such a way that in the area of the openings now the air separates from the water. The separated water droplets form put together a water film and this water flow is then due the gravity effect back down into the water bath, while the partially dried air flow is now deflected upwards on the wall surface becomes and radially inward is directed into the middle region of the droplet deflector pot.

in this connection it is proposed in a preferred embodiment of the invention, that in addition in this area (in the area of the cover plate of the drop deflector pot) an additional Chicane is installed, which provides an additional deflection of the air flow enforces in this area.

In order to is guaranteed that in this area still possibly contained in the air flow smaller water droplets the chicane are deposited and via appropriate drainage surfaces on the Return the cover plate of the drop deflector pot back to the water bath.

In a development of the invention, it is otherwise provided that air conclusive connected to the chicane yet another diversion. These further deflection is designed constructively as a dome. This means that the Cover plate of the drop deflector pot with a corresponding dome-like shaping is over which (in the axial direction above lying) arranged the suction opening is.

The air flow, which has overcome the previously mentioned chicane, now passes through another deflection at this dome finally in the Ab suction opening of the vacuum cleaner, which then leads directly into the suction tank upstream of the droplet separator.

It So is a triple deflection of the loaded with water droplets Air flow provided.

The The first deflection takes place according to the invention in the area of the circulating wall surface and the openings arranged there; the second diversion takes place in the area of the chicane and the third diversion takes place in the range of the previously mentioned Domes.

In order to results in a significantly improved over the prior art Separation efficiency in the air stream.

Prefers It is when the drop deflector pot is made of plastic and if those in the mentioned wall surface arranged openings are preferably formed as round holes. However, the invention is not limited thereto. It can be any Form of breakthroughs are provided. In addition, the openings need not evenly distributed They can also be arranged at the circumference, but they can also be correspondingly uneven distances from each other taking.

Regarding the remaining function of the vacuum cleaner is on the own utility model DE-GM 93 12 156 referenced. The description there should be completely from of the present disclosure.

In a development of the invention, it is provided that instead one, arranged in the cover plate of the Abweisertopfes chicane, which is designed as a ring land, even more such ring lands are arranged parallel to each other and at a mutual distance.

Of the with water droplets laden airflow is then forced to a multiple chicane to enforce.

in the The following is the invention with reference to only one embodiment illustrative drawings closer explained. Here are more from the drawings and their description Features and advantages of the invention.

It demonstrate:

1 FIG. 2 is a diagrammatic cross-section through a vacuum cleaner according to the invention at rest, FIG.

2 : the vacuum cleaner after 1 in the operating state,

3 : A perspective view obliquely from above of a Tropfenabweisertopfes invention.

In the 1 and 2 is generally illustrated a vacuum cleaner whose function is described in DE-GM 93 12 156.

Explosive dusts are over the manifold 3 sucked in and through a water bath 23 directed.

At the exit of the manifold 3 this is a sleeve 7 arranged at the one flap 10 is held pivotally. The flap 10 is under the action of a swimmer 9 controlled in their open and closed positions.

If the water bath 23 is missing, locks a lock 8th the flap 10 and prevents it from the manifold 3 Air enters the vacuum cleaner, because then the cleaning effect of the water bath 23 not available.

Only when the water bath 23 was filled to a sufficient level, locks the float 9 the lock 8th So shut up 10 in their open position according to 2 arrives.

The aspirated, with explosive dusts afflicted air flow is now according to 2 passed through the water bath and passes as an air-water stream 11 in the region of the invention provided Tropfenabweisertopfes 1 ,

Above the drop deflector pot 1 is a drop deflector ring 2 arranged, which the drop deflector pot 1 holds. This drop deflector ring 2 surrounds the filter jacket-shaped 14 that in a filter support basket 4 is held.

To prevent flooding of the filter 14 is in a conventional manner in the filter support basket 4 a swimmer 5 arranged.

The manifold 3 is the rest with a suction hose 6 connected, this suction hose 6 a corresponding cut wall surface 21 in the drop deflector pot 1 (please refer 3 ) interspersed.

According to the invention, the drop deflector pot 1 according to 3 from a cover plate 15 , to which a single piece of material, a circumferential, approximately cylindrical wall surface 21 connects, at regular intervals through appropriate openings 22 is broken.

The air-water stream 11 now passes according to 3 in the lower, downwardly open cavity of the drop stopper pot 1 into it and will be in the area of the wall surface 11 and its openings 22 deflected accordingly, resulting in the desired separation effect.

The at the drop deflector pot 1 separated water stream 12 Now flows down towards the water bath 23 during the substantially freed from water droplets airflow 13 up through the openings 22 flows through it.

It is important that in the area of the cover plate 15 a chicane is incorporated, which serves as a substantially circumferential ring land 18 is trained.

For fastening the drip deflector pot 1 Here are 3 radially outwardly directed webs 16 on the cover plate 15 attached, which bridges 16 the ring bridge 18 wear.

At the jetties 16 So will the drop deflector pot 1 at the bottom of the drop deflector ring 2 attached.

The ring bridge 18 defines three substantially separate flow spaces 17 , which are upstream of the ring land 18 lie. The pre-dried air stream 13 So it has to go over the ring bridge 18 flow over it and there is another separation effect instead. The separated water droplets then flow over the flow spaces 17 radially outward over the wall surface 21 down into the water bath 23 from.

After the further dried air stream 13 the ring bridge 18 has overcome, he gets into an interior 20 of the drop deflector pot 1 , From the interior 20 out of a cathedral rises 19 over which the airflow 13 has to flow.

The cathedral 19 thus forms another chicane, and it comes in particular to a change in the flow velocity of the air flow 13 ,

While in the interior 20 a relatively low air velocity of the airflow 13 There is a significant acceleration of the air flow 13 if this on the dome 19 with a reduced diameter, because there is practically a concentration of air flow in the area above the dome 19 gives.

According to 2 namely extends the suction of the vacuum cleaner immediately above the dome 19 , so that there is a relatively high extraction speed.

Due to this change in the flow velocity compared to the flow velocity in the interior 20 it comes to a further separation effect.

Those in the area of the cathedral 19 separated water droplets are so on the interior 20 outwards over the incised wall surface 21 back down in the water bath 23 derived.

Overall, this results in a 3-fold separation effect, namely once through the openings 22 , to the second through the Ringsteg 18 and for the third through the cathedral 19 ,

Of course it is possible to have a multi-graduated dome 19 to use, to achieve a further increase in airspeed.

It is also possible, several air-tightly arranged one behind the other ring lands 18 to use to provide a multiple chicane.

The The invention thus relates in summary to a wet vacuum cleaner with a droplet separator, wherein the mist eliminator substantially comprises a drip stopper pot includes, whose lateral surface and cover plate define a cavity, wherein the Tropfenabweisertopf is built with its cavity open against the water bath, and only the lateral surface with for the condensation (droplet deposition) effective breakthroughs is provided.

advantage is that through the formation of the pot trap as a drip deflector pot a much better separation efficiency is achieved.

further developments see additional Bullying e.g. in the form of ring bridges and domes before, the separation efficiency (Water droplets from particle-free air flow) additionally increase.

1

Tropfenabweisertopf

2

Tropfenabweiserring

3

elbow

4

Filter holder

5

swimmer

6

suction

7

sleeve

8th

lock

9

swimmer

10

flap

11

Air-water flow

12

water flow

13

airflow

14

filter

15

cover plate

16

web

17

flow chamber

18

ring land

19

mandrel

20

inner space

21

wall surface

22

perforations

23

water bath

Claims (17)

Wet vacuum cleaner with droplet separator, in particular for filtering explosive and / or harmful to health and / or the environment particles by passing the charged with these particles suction air flow through and / or a liquid bath ( 23 ), in particular including water, characterized in that the mist eliminator substantially as with openings ( 22 ) provided drop stopper pot ( 1 ) is formed, which defines a cavity with which it is installed against the water bath in the vacuum cleaner, wherein the moist air flow from below into the Tropfenabweisertopf ( 1 ), first onto the drop deflector pot ( 1 ) and now a change of direction in the direction of the openings ( 22 ) learns and passes through them. Wet vacuum cleaner with droplet separator according to claim 1, characterized in that the droplet deflector pot ( 1 ) a cylindrical tube-shaped jacket with lateral surface ( 21 ) and an end cover plate ( 15 ), wherein only the lateral surface ( 21 ) with openings ( 22 ) is provided. Wet vacuum cleaner with droplet separator according to claim 2, characterized in that the end-side cover plate ( 15 ) substantially transversely to the longitudinal axis of the tubular lateral surface ( 21 ) runs. Wet vacuum cleaner with droplet separator according to claim 2, characterized in that the end-side cover plate ( 15 ) is dome-shaped cone-shaped, partially conical or partially spherical. Wet vacuum cleaner with droplet separator according to one of claims 1 to 4, characterized in that the openings ( 22 ) are formed round in cross-section. Wet vacuum cleaner with droplet separator according to one of claims 2 to 5, characterized in that the perforations ( 22 ) evenly distributed over the lateral surface ( 21 ) are arranged. Wet vacuum cleaner with droplet separator according to one of claims 2 to 6, characterized in that in the region of the cover plate ( 15 ) of the drop deflector pot ( 1 ) at least one additional baffle is installed, the additional deflection of the air flow ( 13 ) enforces. Wet vacuum cleaner with droplet separator according to claim 7, characterized in that the at least one additional chicane as at least one axially extending annular web ( 18 ) is trained. Wet vacuum cleaner with droplet separator according to claim 8, characterized in that the annular web ( 18 ) has a smaller outer diameter than the drop deflector pot ( 1 ) or its lateral surface ( 21 ). Wet vacuum cleaner with droplet separator according to one of claims 8 or 9, characterized in that the annular web ( 18 ) is open and at its ends radially outwardly extending webs ( 16 ) are located. Wet vacuum cleaner with droplet separator according to claim 10, characterized in that the webs ( 16 ) extends into the transition region of the cover plate ( 15 ) to lateral surface ( 21 ) of the drop deflector pot ( 1 ). Wet vacuum cleaner with droplet separator according to one of claims 8 or 9, characterized in that the annular web ( 18 ) is completely self-contained. Wet-suction device with droplet separator according to one of claims 7 to 12, characterized in that it is connected to the baffle or the annular web ( 18 ) at least one further deflection of the air flow ( 13 ), which is connected upstream of the suction opening of a turbine of the nipple. Wet vacuum cleaner with droplet separator according to claim 13, characterized in that the at least one further deflection of the air flow ( 13 ) in the form of a cathedral ( 19 ) happens. Wet vacuum cleaner with droplet separator according to claim 14, characterized in that the dome ( 19 ) is cylindrical or conical or frusto-conical or partially spherical. Wet vacuum cleaner with droplet separator according to one of claims 14 or 15, characterized in that the dome ( 19 ) is in the operating position of the nipple axially below the suction opening of the turbine of the nipple. Wet vacuum with demister after egg nem of claims 1 to 16, characterized in that the Tropfenabweisertopf ( 1 ) consists at least partially of plastic.