DE2205775C3 - Device with a counterflow heat exchanger - Google Patents

Description

The application relates to a device with a Countercurrent heat exchanger in which cold outside air is passed through the first group of ducts and through the second group of channels pass through warm air containing water vapor. The degradation the naturally occurring high humidity in swimming pools, tubs and shower rooms, Laundry rooms, medical and clinical spas, saunas, wet processing plants and the like is at favorable outside temperatures, close to the desired room temperature, through pure ventilation easily possible. Fresh air is supplied and the moist room air is removed. If the outside temperature drops, so the supply air must be heated in order not to let the room temperature drop. Especially with temperature differences above 10 ° C. the exchange of supply and exhaust air becomes uneconomical, so that another A way must be found to reduce the humidity of the indoor air.

It is known to extract fresh air or outside air by means of steam heat from highly humid, warm exhaust air to warm up. This is done in a countercurrent heat exchanger of the two groups of channels having. Through the first group of channels the fresh air or outside air and through the The second group of ducts is used to channel the highly humid, warm exhaust air.

While with the well-known countercurrent heat exchanger the steam heat of the exhaust air is to be used to heat the fresh air, should be used here an economical dehumidification of the room air can be achieved.

The invention is therefore based on the object of reducing the air humidity in closed spaces economically to belittle.

The solution to this problem is that to lower the humidity in closed Evacuate the air containing water vapor is room air that is used for drying through the countercurrent heat exchanger passes through and can then be fed to the closed space while dry the cold outside air can be released to the outside

ίο In the indoor air / outdoor air counterflow heat exchanger the warm, humid room air flows through upright, narrow, high ducts. On the chilled The walls of these channels form the condensation water that drips down and onto the

sloping bottom of the container flows to the drain. Loss of heat energy occurs only through minimal Cooling of the room air by a few degrees, so that the costs remain almost constant, no matter how low the outside temperature may also drop.

ao Materials can also be dried if these materials are in an enclosed space to which this device is connected.

Further expedient further developments of the invention

application are evident from the subclaims.

The invention is explained in more detail using an exemplary embodiment. It shows

F i g. 1 a longitudinal section through the embodiment,

F i g. 2 shows a section along the line in FIG. 1 level down and

Γ i g. 3 shows a section along the plane cd.
In Fig. 1, 1 and 6 denote the air ducts, 2 the upper warm air chamber and 3 the collecting basin for condensed water.

The warm room air, which holds water vapor, is fed to the device via the upper left connection nozzle fed. It then flows through the upper warm air chamber 2, the warm air ducts, one after the other 6 and the collecting basin 3 for condensation water. From there it is connected to the lower right connection piece returned to the room.

The cold outside air is supplied to the device via the upper right connection stage. she then successively flows through the right cold air chamber 5, the cold air ducts 1, and the left cold air chamber 4. From there it is returned to the outside via the lower left connection port.

^ on the left side of the counterflow heat exchanger is the partition? between the warm air supply and the cold air exhaust with insulation provided so that no condensation forms on the partition wall in the hot air supply occurs. On the right side needs the appropriate partitions between the cold air and the Warm air not to be isolated, since water droplets precipitated on the partition wall 8 enter the Collecting basin 3 can flow.

9 with the bottom of the collecting basin 3 is designated, which inclines to the drain 10 of the condensed water is.

From the F i g. 2 and 3 is in particular the arrangement of the cold air ducts 1 and the warm air ducts 6 evident.

1 sheet of drawings

Claims (3)

Patent claims: 1. Apparatus with a countercurrent heat exchanger in which by the first group of Ducts cold outside air and through the second group of ducts warm water vapor-containing Air passes through, characterized in that to reduce the humidity in closed rooms the air containing water vapor is room air that is Drying passes through the countercurrent heat exchanger and then the closed one Dried room can be supplied, while the cold outside air can be released to the outside is. 2. Apparatus according to claim 1, characterized in that the countercurrent heat exchanger in its lower part a collecting basin (3) with an inclined towards a drain (10) has inclined bottom (9). 3. Apparatus according to claim 1 and 2, characterized in that the room supply air line is thermally insulated from the adjacent outside exhaust duct.