METHOD FOR CONTROLLING THE SUPPLY AND THE DISCHARGE OF HOT AIR TO AND FROM, RESPECTIVELY, A BLOWING TUNNEL

摘要

PCT No. PCT/SE89/00237 Sec. 371 Date Dec. 27, 1990 Sec. 102(e) Date Dec. 27, 1990 PCT Filed Apr. 27, 1989 PCT Pub. No. WO89/11074 PCT Pub. Date Nov. 16, 1989.A funnel-shaped arrangement (1) for drying and/or cooling vehicles or parts thereof. The funnel-shaped arrangement (1) is longitudinally divided into a number of sections each of which is provided with a plurality, preferably 60-250, of nozzles (7,20,21,22,23,24,25) which are substantially evenly distributed over the curved inner surface of the section and through which the gases are supplied and blown against the vehicle or the parts thereof passing through the arrangement (1), the pressure drop of the gases is measured across the nozzles (7,20,21,22,23,24,25) and the temperature of the gases before the nozzles (7,20,21,22,23,24,25). The measured pressure drop values are then compared with predetermined desired values corresponding to the prevailing temperature, whereupon a pressure increase or a pressure reduction signal is supplied to a first pressure changing means (29) for suplying the gases to the arrangement (1), depending on whether the measured values are below or above the desired values.