DE3321688A1 - DEVICE FOR SEPARATING LIQUID DROPS TAKEN IN A GAS FLOW - Google Patents

Description

321688

Description

The invention relates to air purifiers and more particularly relates to a device that controls the amount of liquid at least reduced that is entrained in a flow of air entering an air purifier = if a A common air purifier used to filter the flow of air to an internal combustion engine often is essential to remove entrained liquid. or

2Q to reduce this at least to an acceptable level. Paper air filters aren't particularly well suited for the treatment of mixed fluid-air flows. Water vapor is and can be fairly widely accepted improve the combustion efficiency. On the other hand are

jg the amounts of entrained liquid are often very high in the neighborhood of road vehicles moving at speed driving in wet weather »

Known liquid separators use centrifugal force and / or a sudden change in the direction of the Air flow, which causes the heavier water particles / drip s are ballistically separated from the air flow on a kind of collector surface, which is equipped with a drainage or drainage opening or such a channel is connected = These known separators are not special effective and it has been suggested that the air flow through a coarse wire mesh or = wire mesh To be guided = The latter is known for its ability to remove liquid droplets from an air stream to "coalesce" or = to aggregate, but if the throughput is high in wet air, the braid can become "plugged" and release amounts of water in the downflow. The braid can also freeze at low temperatures.

According to the invention comprises a device for separating entrained liquid droplets from a gas stream a housing with a generally vertically arranged

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Collecting device in the form of a perforated, net-like Structure comprising a lower edge portion against a generally vertical wall portion of the housing which has an inlet in the form of a generally horizontally extending slot

has, the horizontal boundaries of which to accelerate the incoming gas flow to the collecting device are shaped so that the gas flow is forced to change direction of at least 90 ° before it is generally -iQ nen up through the collection facility and then to a Outlet of the housing runs.

Preferably, the liquid collecting device is arranged so that it drains itself, with liquid, p-outlet devices are provided for the removal of the collected liquid to the outside of the housing.

If the inlet is in direct contact with a liquid-laden gas atmosphere, then the marginal

2Q sections of the inlet shaped to allow the liquid deflect and / or exclude or secrete, which are on the outer or inner surface of the housing collects. In particular, it is important to minimize the amount of such liquid used by the

ok gas stream being entrained into the inlet.

As mentioned above, advantageously the liquid collecting device designed so that it drains itself under the action of gravity. Also will 3Q the gas stream suitably generally upwards over the liquid collecting device, that is, against gravity, guided to the separation effect raise.

gg The invention is illustrated below with reference to the drawing, for example described; in this shows:

Fig. 1 is a sectional view of a liquid separator according to the invention,

-δ-Fig. 2 is a sectional view of a further embodiment a liquid separator according to the invention, and

3 shows a detailed view on an enlarged scale from the embodiment shown in FIG.

According to the drawing, a housing 5 comprises an outlet 6 and a slot or elongated hole inlet 7. A liquid collector with an impermeable support 8 and a layer of steel wire mesh 9 is mounted in the housing so that gas entering through the slot 7 causes a sudden change of direction from slightly downward (relative to the top of the case) to vertical or nearly vertical Path along the surface of the braid 9 before it comes to the end of an impermeable retaining cap or * Retention cover 4 flows to the outlet. The cover 4 serves to prevent the re-entrainment of accumulated on the braid Minimize fluidity while an outlet 11 serves to drain the latter. According to Fig. 2, manifolds 12 are used to perform this function on the sides of the housing.

The slot has an upper lip or projection in the form of an outer channel 3 which is so arranged is that it prevents liquid from dripping directly into the inlet. The approach also has an inner one Channel 13, which serves the same purpose inside the housing. The opposite edge 14 of the slot is rounded, to smooth the inlet gas flow.

According to Fig. 2, two slots and two liquid _{collectors and} a differently directed outlet are provided. The two slots allow greater throughput.

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based embodiment

In one of the embodiments of FIG. 1 / was the housing generally rectangular with a slot dimension 2 in the range of 2 0 to 30 mm, the exact Size was chosen so that for a given slot width the peak flow velocity into the housing is approximately 2 0 m / s. The dimension 1 was about 40 mm, while the wire mesh 9 was about 12 mm thick. The separator had a total pressure drop (from inlet to outlet) of about 55 mm of water or water column.

In the test with air that was artificially charged with large amounts of water (by spraying), the separator removed about 85% of the water supplied. This was an extreme High efficiency.

Claims (5)

Claims 1. Device for separating liquid droplets entrained in a gas stream, thereby marked ei chnet, that a housing with a generally vertically arranged collecting means in the form of a perforated, reticulated Structure is provided which has a lower edge portion on a generally vertical wall portion of the housing tightly abuts an inlet in the form of a generally horizontally extending slot whose horizontal boundaries are shaped to accelerate the incoming gas flow to the collector device: are so that the gas flow is forced to change direction of at least 90 ° before it is generally upward over the collector and thereafter to an outlet from the housing. B-SQOO mouths 2
Isartorplatz 6 POB 26 02 47 D-8000 Munich 26 Cable; Muebopat 089 / 221483-7 Copy of Infotec 6400 B Tslsi: G II + III (O 89) 22 98 43 "5-24 285 2. Device according to claim 1, characterized in that that a liquid outlet from the housing at the junction is provided between the collecting device and the housing wall, so that the collecting device drains itself. 3. Apparatus according to claim 1 or 2, characterized in that the exiting gas stream in general runs horizontally, specifically following an im IQ change of direction essentially by 90 ° around an upper limit of the collecting device. 4. Apparatus according to claim 1 or 2, characterized in that the exiting gas stream in general runs vertically downwards, specifically following on one Change in direction essentially by 180 ° around an upper limit of the collecting device. 5. Device according to one of the preceding claims, characterized in that the boundaries of the inlet are shaped so that they deflect and / or exclude liquid that is in operation on the internal and / or external surfaces of the housing accumulates.