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Evaporative cooler

a cooler and evaporative technology, applied in the field of evaporative coolers, can solve the problems of undesirable droplets in the size range of 1 to 5 microns, and achieve the effect of effective control of water supply

Inactive Publication Date: 2011-02-24
HEEMAK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution effectively prevents aerosol formation, improves cooling efficiency by controlling liquid delivery, and reduces the risk of disease transmission by ensuring that only large drops reach the heat exchange surface, maintaining efficient operation and safety.

Problems solved by technology

In particular, droplets in the size range of from 1 to 5 microns have been shown to be undesirable since such droplets are both sufficiently large to carry Legionella bacteria and sufficiently small to be inhaled deep into the lungs where they can cause Legionnaire's disease.

Method used

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Examples

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Embodiment Construction

[0044]FIG. 1 shows a dew point cooler 1 comprising two medium circuits through which, as will be explained below with reference to FIG. 7, a medium, in particular air, can flow in counterflow. The dew point cooler 1 comprises a number of heat-conducting and medium-separating walls 2, which are used for heat transfer between the primary air stream and the secondary air stream, with the media remaining separate. In this context, for explanation reference should be made to FIG. 7.

[0045]As can be seen in particular from FIG. 7, the walls bear copper or aluminium strips which are bent in the shape of square waves, serve as effective features for increasing the surface area and can be considered as fins. These fins are at least partially provided with a porous covering layer, for example consisting of rock wool or a Portland cement. This means that this covering layer is able to retain water which is supplied, for example through capillary action, and to distribute it.

[0046]With a view to...

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Abstract

The invention relates to an evaporative cooler having two medium circuits which are thermally coupled to one another by a number of heat-conducting vertical walls. These walls and the heat-conducting fins arranged thereon are provided with a hydrophilic, water-buffering covering layer, for example made from Portland cement. A humidification unit for moistening the covering layer is added to the dew point cooler. According to the invention, the humidification unit comprises a releasable cover which forms part of the casing of the dew point cooler and bears at least one sprinkler or nozzle for distributing water over the covering layer.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an evaporative cooler and more particularly to an evaporative cooler having an improved irrigation system. It also relates to a method of supplying liquid to an evaporative cooler.[0003]2. Description of the Related Art[0004]Evaporative coolers are known in which a supply of liquid is provided to a porous panel. An air stream passing through the panel can evaporate this liquid. In doing so, the temperature of the air decreases and its humidity is increased. In such prior art devices, the liquid, generally water, was supplied in quantities sufficient to maintain the wettable surface completely saturated. Excess water was allowed to drip away or would be recycled for reuse. Such a device is known from U.S. Pat. No. 6,332,332, which discloses a water distribution tray with an inlet and a series of water outlets. Evaporative coolers of this type have been found to be very inefficient in sign...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F28D5/00F24F1/0071F24F5/00F28D5/02
CPCF24F5/0035F24F2001/0092Y02B30/545F24F2006/146F28D5/02F24F2003/1678F24F1/0007Y02B30/54F24F8/28F24F1/0071F24F1/42F28C1/00
Inventor REINDERS, JOHANNES ANTONIUS MARIA
Owner HEEMAK