NL9500444A - Device for cooling air - Google Patents

Abstract

Device for cooling air which flows through hospitals, halls, working areas and the like, which comprises a casing with cooling water supplied and discharged through a circulation system of lamellae, with a condensate trap comprising profiled sections with projections, inside which casing, at a certain distance beneath the assembly, there is a sloping leakage tray with an outlet for the condensed moisture.

Description

Christienus Wieger Lubbers, in Leerdam.

Air cooling device.

The present invention relates to an apparatus for cooling air in work spaces, meeting rooms, schools, hospitals, apartment buildings and the like.

The atmospheric air is drawn in, cooled, purified, free from moisture and returned to the room. Devices for this purpose are known and described in EP-A-O 194 636 and EP-Ο 454 228.

The equipment is housed in a closed plastic housing (1), which ensures a corrosion-free construction with as little vibration as possible, noise pollution and good thermal insulation.

Given the highly variable relative moisture content of the air in the Western European climate, this causes many problems in cooling installations.

Condensation water is produced in highly variable quantities, which must be quickly collected and discharged from the compact cooling device, since the acidified condensation causes corrosion very quickly and entrained dust bound to aerosol pollutants and in particular also promotes bacterial growth.

Corrosion-resistant steel can even be affected by the strongly varying concentrations of the condensation.

As is known, aluminum forms aluminum oxide under these conditions, as a result of which the gaps between the fins grow closed and the passage of air is hindered. Protection of the metal parts by painting offers some solution, but contamination and bacterial growth remains on the fins and bottom panels of the coolers, leaving acidified condensation on and directly above the bottom panel, stripping away the paint and again causing strong corrosion.

With the present invention, these drawbacks are obviated and a device is obtained which is suitable for long-term operation as well as for frequently varying loads for large and small spaces and thus represents a solution for hospitals, office and other work spaces, as well as for large residential complexes.

The device according to the present invention consists of a combination of a vane air cooler with or without a condenser trap, which is characterized in that both said parts have no bottom panels and are thus vertically suspended free-hanging at the top and sides, below which equipped with a drip tray with sloping bottom which is located at a large distance from the bottom of the slat package of the cooler and the drip catcher. The condensation with dust particles contained therein falls freely into the drip tray (5) and is quickly drained there, through the condensation drain pipe (6) at the lowest point.

The fins of the coolers are thin plates through which cooling pipes (4) transfer the cold from the cooling water supplied and discharged by the shepherds (2 and 3) to the fins so that the passing air is cooled and dehumidified.

The plates or fins of the condensation trap are placed vertically and have a curved surface on which small semi-curved protrusions, which create vortices in passing air, so that droplets and very small droplets (aerosols) that are carried by the air from the cooler on the plates be deposited and, as condensed water, flows directly downwards into the drip tray (5) with an inclined bottom and is quickly drained.

Due to the large distance between the sloping bottom of the drip tray (5), the fins of the cooler and the profiled plates of the condensation trap, the construction is easy to clean and maintenance is no problem, while dust accumulation, corrosion and bacterial growth are prevented.

Fail-free operation, longer life and the prevention of bacterial growth are important advantages for the food industry, hospitals and other public buildings.

The invention is further elucidated with reference to the annexed figures 1 to 4.

Figure 1 shows a front view of the fin air cooler.

Figure 2 shows a section thereof along the line A-A '. Figure 3 is a front view of the condensation trap.

Figure 4 shows a cross section of the condensation trap and the shape of the catch plates (7) with the protrusions (8), which catch the drops.

Identical parts with the same position numbers are indicated in the 4 figures.

The following construction parts are shown in these figures: 1. Casing.

2. Supply of cooling water.

3. Drainage of cooling water.

4. Register pipes for circulation of cooling water.

5. Inclined drip tray.

6. Drainage of condensation 7. Catching profiles in condensation trap 8. Projections Summary:

The air to be cooled enters the vane cooler, the vanes of which are cooled by running cooling water. The heat exchange occurs here.

The air, which enters droplet-shaped condensate, then flows into the condensation trap, which contains the trap profiles (7).

The catch profiles (7) have the protrusions (8) which feed the condensation downwards into the drip tray (5) with an inclined bottom which collects it there at the lowest place (6) and quickly drains it.

Claims (3)

Device for cooling air in work spaces, meeting rooms, schools, hospitals, apartment buildings and the like, consisting of an enclosure (1), comprising a fin air cooler with or without condenser trap, characterized in that the air cooler and the condensation trap vertically free hanging without bottom panels in the housing (1) and including a drip tray with a sloping bottom at a large distance from the free hanging slats packages of cooler and drip catcher, in which the moisture with dust particles contained therein falls free and can collect continuously, with a drain (6) at the lowest side of the drip tray (5), where the fins of the cooler are thin plates, through which the cooling water flows through pipes in a closed circuit, and the condensation trap is provided with rows of curved catch plates placed next to each other (7) with small semi-curved projections (8), creating air vortices to separate droplets and aerosols. 2. Device as claimed in claim 1, characterized in that the fins of the air cooler are cooled with cooling water flowing through pipes or coolant evaporating in the pipes. Device according to claim 1, characterized in that all parts are made of rust-resistant or stainless materials.