DK201300148U3 - AIR PURIFICATION - Google Patents

Abstract

The invention relates to a housing ventilation system (1) in which housing air passes through a horizontal passage through the plant in a box (2) partly through a liquid mist which may contain acid or base, and then passes a droplet trap (4a and 4b), where the liquid in the air upon impact against drop catches in the form of vertically mounted slats (9a and 9b) is trapped so that the liquid can be collected at the bottom of the box (2). The slats (9a and 9b) in the dropper catch may be provided with projections in the form of waves, dents and the like to better form impact surfaces for the liquid in the air! Each droplet catch (4a and 4b) can be withdrawn from the box (2) via a door (3) for cleaning by flushing to remove dust and feathers and the like. Thereafter, the purified droplets can be inserted into the box (2) and the door (3) closed, after which the purification can be resumed. This ensures a simple and effective cleaning as the droplet catches are easily cleanable.

Description

Air purification system The prior art

The production relates to an air purification system, especially for the purification of extract air from pig and poultry barns, which plant is built into a box, container, and in which, in the first part, the air supply end, a device for emitting liquid droplets in mist form is mounted.

Such systems are primarily used to remedy ammonia and odor nuisances and to ensure effective housing ventilation, which results in a significant reduction in air pollution around the houses and at the same time ensures a suitable clean atmosphere for the animals in the house.

The use of filter blocks is known, which are sprayed with liquid, with the liquid running from top to bottom.

This known solution, however, suffers from the disadvantage that the filter is quickly or completely clogged, especially with dust / feathers, which results in considerable energy consumption for ventilation as the air flow is limited as the clogging occurs. Furthermore, a lot of time has to be spent cleaning the filter block and the technology has not been able to be used in poultry houses as a result.

Purpose of production

The object of the present invention is to remedy these deficiencies by known filters, and this is achieved according to the present invention by means of a liquid mist added base / acid for capturing odor / ammonia and subsequently placed a drop trap consisting of parallel lamellae / tubes which extends throughout the box cross-section for trapping and trapping liquid as the liquid droplets with the air in a substantially horizontal flow direction pass the droplet via the space between the slats.

In this surprisingly simple way, a very efficient air purification system is obtained for stables or other dusty industries, which does not suffer significantly from the disadvantage of rapid clogging, as the use of liquid mist followed by drip catch does not stop to the same extent, and therefore will not under operation there is increasing energy consumption for the ventilation system.

Furthermore, the slats or tubes will be effective droplets as the liquid will be trapped and passed down along the slats to the bottom where the liquid can be collected for use as fertilizer.

This is a very suitable solution as it reduces the potential for depositing dust / feathers in the lap and partly absorbs liquid in an efficient way.

The liquid is valuable as it contains fertilizer for the collection of nitrogen from the ammonia-containing air which is neutralized with acid in the spray water.

As defined in claim 2, forming the slats or tubes with protruding impact areas in the form of waves or dents, an effective droplet is obtained, since all the suctioned liquid-containing air will touch a point on one of the slats. This is done without dust / feathers being prone to getting stuck on the slats, thus limiting the flow.

By incorporating the slats / tubes into a frame, as defined in claim 3, it is easy to handle the drop catch and partly ensures that the slats remain stable in the frames.

By installing several droplet catches in succession, as mentioned in claim 4, a new high efficiency can be achieved, since the slats / pipes in the individual catches can be mounted with increasing mutual distance in the direction of the air flow.

By, as defined in claim 5, providing the plant with a door next to the drop catch, the individual frames can be pulled out and cleaned, e.g. by flushing or replacement. This is a great advantage as the user does not need to disassemble the air cleaner or stand inside the air cleaner when cleaning filters when cleaning filters.

Finally, as claimed in claim 6, it is appropriate to provide the gate with sliding guide on the inner side so as to achieve that the gate can act as a sliding guide for the frames when extracting and inserting the individual drop catches.

The drawing

An example of the invention will now be described in more detail with reference to the drawing, in which: FIG. 1 shows an example of a system built into a box, and FIG. 2 shows the system with open door and two drip catches during extraction.

Description of an embodiment

The air purification system according to the invention can be built into a box, pipe or container 2, as shown in FIG. First

The left end of the box is connected via channels not shown to the suction openings of the barn, which may be a pig or poultry barn.

In the interior of the box are not shown means for producing a liquid mist, which the sucked-in air passes through on its way through the plant, that is to say from the drawing from left to right. The exhaust air is extracted via one or more fans 6 mounted at the opposite end of the box.

The liquid, which is emitted in droplet form, together with the air forms a liquid mist which absorbs the substances which may be in the stable air during passage through the liquid mist.

These substances may be ammonia and sulfur hydrogen, as well as other chemical odorants, which are desired to be removed from the housing air before being sent to the environment. In the case of ammonia, acid is added to the water, while sulfur / odor is added to the base.

For trapping and absorbing the liquid in the mist containing these substances, droplet catches 4a, 4b are mounted, as shown in FIG. 2nd

In FIG. 2, two drops are shown, but of course there can be fewer and more depending on the need.

Each drop catch consists of a series of vertical slats or tubes 9a, 9b extending vertically over the entire cross-sectional area of the box.

The first drop catch 4b, seen in the flow direction, has its slats / tubes 9b mounted at a slightly greater distance between the individual slats / tubes, as shown in the drawing.

They may also be formed with waves, as indicated in the drawing, to better constitute impact surfaces for the liquid air during its passage between the slats.

Instead of waves, protrusions may otherwise be formed in the form of dents or the like, which will act as a liquid trap upon impact of the fog against the slats.

The slats / tubes 9a in the subsequent catch 4a may be slightly narrower and less spaced apart to better trap the last residual liquid in the air upon passage through the catch.

In order to ensure the stability of the dropper catch, the lamellae / tubes are shown built into a circular frame 7a and 7b, which partly stabilizes the catch and furthermore allows it to be displaced, as will be explained below.

The box 2 is provided next to the drop catches 4a and 4b with a door 3 which can be opened by folding, as shown in FIG. 2nd

Sliding guides 8a and 8b can be mounted on the inside of the door to control the drop catches so that they can slide on the door for extraction and insertion.

As there is often some dust and, in the case of poultry houses, feathers in the extracted barn air, there is a risk that dust and feathers can settle on the slats. This will reduce the efficiency of the droplet catch and thus the ability to capture liquid and guide it down to the bottom of the box, as the air flow will be reduced as dust and feather deposition is reduced. This will increase energy consumption.

Therefore, in order to ensure the most economical operation of the plant, it is desirable to be able to clean the catch, e.g. by means of a high pressure washer when the dropper catch is extracted.

The precipitated liquid which can be used as fertilizer can be drained via a pipe nozzle 10, after which it can be fed to a container or the like not shown.

The door 3 can be closed by means of bracket 3a and can also rest on supports 5 mounted on the box, as shown in FIG. 2nd

The plant according to the production is very efficient and with its easy possibility of cleaning the drip catches will operate at the lowest possible power consumption and time for maintenance and cleaning. Since there is only a need for energy for the fan 6, this results in a high level of reliability with minimal need for maintenance.

Claims (6)

An air purification system, in particular for the purification of extract air from pig and poultry barns, which is built into a box, pipe, container and in which, in the first part, the air supply end, a mist chamber is formed in the form of a device for dispensing liquid droplets in mist form, which is new in that a drop catch (4a, 4b) consisting of parallel slats or tubes (9a, 9b) extending over the entire cross-section of the box (2) is placed in the box (2) after the mist chamber entrapment and precipitation of liquid when the liquid droplets pass through the air in a substantially horizontal flow direction through the droplet trap via the space between the slats / tubes (9a, 9b). An air purification system according to claim 1, which is new in that the droplet louvers or pipes (9a, 9b) are curved and / or provided with waves to form protruding impact surfaces for the liquid air as it passes through the trap. Air purification system according to claims 1 and 2, which is new in that each droplet catch (4a, 4b) is built into a frame (7a, 7b) such that each droplet catch forms a unit which can be extracted and cleaned. An air purification system according to claims 2 and 3, which is new in that the individual droplet catches can have different distances between the slats / tubes (9a, 9b), so that the catch (7b) closest to the suction is greater than that or the subsequent catches (4b). An air purification system according to claim 3, which is new in that the box (2) is provided with a door (3) next to the drop catch (4a, 4b), which cover (3) can be opened for extraction of the drop catch. An air-purifying system according to claim 5, which is new in that the door (3) can be folded down and form sliding guide (8a, 8b) for the drop catch (4a, 4b) when it is withdrawn for cleaning and subsequent insertion into the box (2 ).