FI96542B - Air Cooling Device - Google Patents

Description

! 9654 /

The air cooler

The invention relates to an air cooler comprising a cooling device, an actual water collecting chute located below it and a second water collection chute arranged below it.

Cooling coils based on gravity 10 are used, for example, in the food industry and shops to provide draft-free air cooling. Because the cooling coil is colder than the surrounding space, it tends to condense moisture on its surface. In cases where the temperature of the refrigerant inside the pipe of the heat transfer section is below 0’c, this humidity also freezes, so 15 radiators must be thawed from time to time. Below the radiator, water collection troughs are used to collect the dripping water.

The structure of the cooling radiator based on gravity air flow must be open, because the air must flow as well as possible from top to bottom. The water collection gutters are exposed to a cold air flow and are at a temperature lower than the ambient temperature, which condenses moisture on their surface. Generally, air coolers use 25 superimposed chutes, the lowest of which is to collect condensed water on the lower surface of the chute. Especially in humid conditions, the problem is that the water also condenses on the lower surface of the lower trough and falls from there onto the goods placed in the space, etc.

·: The water collection arrangement used in the refrigerator condenser apparatus is disclosed, for example, in U.S. Patent 4,843,835. The arrangement disclosed in this publication includes a water collection basin 35 and a condenser located below it. In this arrangement, only one water collection basin has been used, and the purpose is to evaporate the water away. Such a structure differs from the structure of the actual 9654:> 2 air coolers and does not work in them.

SE-A-410514 discloses a heat pump and a drainage chute placed thereon, under which a heating coil 5 is arranged. This one trough is heated to keep the water melted. In the structure according to the publication, the structure is not open and does not include two gutters, so it is not suitable for use in the air cooler according to this application.

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The object of the invention is to provide an air cooler by means of which the drawbacks associated with current devices are eliminated. In particular, it is an object of the invention to provide an air cooler in which water does not condense on the lower surface of the lower water collecting chute.

The object of the invention is achieved by an air cooler which is characterized by what is stated in the claims.

The air cooler according to the invention has a heater located in connection with the lower water collecting trough to keep the temperature of the lower surface of the lower water collecting trough above the dew point of the ambient air. When the temperature of the lower surface of the water collection trough is higher than the dew point of the ambient air, moisture cannot condense on the lower surface.

In a preferred embodiment of the invention, the heater is a low-power resistance heater placed on the surface of the water collection chute. The heating power requirement is so small that it does not significantly affect the cooling capacity of the cooling coil and does not adversely heat the actual water collection chute. In this case, the flow of cooling air in the air cooler is also not disturbed.

According to the invention, the heater is preferably located on the upper surface of the second water collecting trough. When the heater is between the water collection chutes, it is protected from bumps, shocks, etc.

il 9654 / '3 stresses. It is also possible to place the heater on the lower surface of the water collection chute.

The invention will now be explained in more detail with reference to the accompanying drawing, which shows an application of an air cooler according to the invention.

The air cooler according to the figure comprises a cooling device 1, which is a cooling coil, water collecting troughs 2, 3 and a heater 10 4. The cooling coil 1 is fastened to the supports in a known manner. Below it there are several water collecting troughs 2, and each trough is trough-shaped so that the water dripping from the cooling coil can flow out along the trough. Immediately below the water collecting troughs 3, 15 correspondingly shaped water collecting troughs 4 are arranged, which are intended for collecting water dripping from the upper trough. On the upper surfaces of these water collecting gutters are placed low-power resistance heaters 4, which are connected to an electric source (not shown in the figure). Resistance heaters do not impede the flow of water 20 on the trough surfaces, but they heat the troughs so that the temperature of the lower surface of the troughs is higher than the dew point of the air.

The invention is not limited to the preferred embodiment shown, but may vary within the scope of the inventive idea formed by the claims.

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Claims (3)

9654 / 1. In the case of an arrangement, the account is to be used as a device (1), and in the case of a placebo (5) and in the case of a placebo (3), a string of the same is shown in the sample. 3) with placerats en • uppvärmningsapparat (4) for the temperature at the same time as the push-button (3) for a maximum of 10 air temperature points. An air cooler comprising a cooling device (1), an actual water collecting trough (2) arranged below it and a second water collecting trough (3) arranged below it, characterized in that a heater (4) to keep the bottom surface temperature above the dew point temperature of the ambient air. 10 2. In the case of a patenting method according to claim 1, the transverse operation (4) does not end up with a wattage knob (3) with a plurality of impact devices. Drip tray according to Claim 1, characterized in that the heater (4) is a low-power resistance heater arranged on the surface of the water collection chute (3). Drip tray according to Claim 2, characterized in that the heater is arranged on the upper surface of the water collecting trough (3). 3. A luftavkylningsanordning enligt patentkrav 2, kännetecknad av, att uppvärmningsapparaten (4) har placerats pä Övre ytan av vattenuppsamlingsrännan (3). Il