Patent ID: 6079483
Filing Date: 2000-06-27
Classification: F24F,G05D

Abstract:
A temperature/humidity controller used for controlling temperature/humidity of an air conditioner (1) in whichat least one of temperature/humidity adjusting devices (4, 4, - - - ) including a main heater (H), an adiabatic humidifier (W), a cooler (C) and an auxiliary heater (RH) for controlling temperature/humidity of an intaken outside air are arranged in this order along an air flow path, and further comprising;capacity controllers (Y.sub.1 -Y.sub.4) each conducting feedback control for the capacity of each of the temperature/humidity adjusting devices (4, 4, - - - ) such that the exit temperature or the exit humidity of each of the temperature/humidity adjusting devices (4, 4, - - - ) is identical with the aimed exit temperature or aimed exit humidity, whereinthe temperature/humidity controller comprises a main controller (11) having a temperature/humidity sensor (TH.sub.1) for detecting temperature/humidity of the outside air connected to the input thereof and the capacity controllers (Y.sub.1 -Y.sub.4) connected to the output thereof, in whichthe main controller (11) comprises:a psychrometric chart table (13) previously storing a psychrometric chart,an aimed temperature/humidity line setter (14) for setting, on the psychrometric chart table (13), an aimed temperature/humidity line (Lo) formed by connecting an upper state point (Ps) determined by an upper limit temperature and an upper limit humidity and a lower limit state point (Pw) determined by a lower limit temperature and a lower limit humidity of a conditioned air,an outside air state point setter (16) for setting each of outside air state points (G.sub.1 -G.sub.5) based on the temperature/humidity of an outside air detected by the temperature/humidity sensor (TH.sub.1) on the psychrometric chart table (13),a controlling line setter (18) for setting each of controlling lines (J.sub.1 -J.sub.5) formed by sequentially connecting necessary lines selected from a main heating line (H.sub.L) progressing along an equal absolute humidity line in the heating direction on the psychrometric chart, an adiabatic humidifying line (W.sub.L) progressing along an equal enthalpy line in the humidifying direction on the psychrometric chart, a cooling line (C.sub.L) progressing toward a cooling temperature (Tc) set lower than the dew point for the upper limit state point (Ps) on the psychrometric chart and an auxiliary heating line (RH.sub.L) progressing along the equal absolute humidity line in the heating direction on the psychrometric chart in this order, from the outside air state point (G.sub.1 -G.sub.5) to a point on the aimed temperature/humidity line (Lo), in accordance with the temperature/humidity adjusting device (4, 4, - - - ) provided to the air conditioner (1), andan aimed exit temperature setter (20) for outputting the temperature for the end point of each of the main heating line (H.sub.L), the adiabatic humidifying line (W.sub.L), the cooling line (C.sub.L) and the auxiliary heating line (RH.sub.L) as the aimed exit temperature for each of the main heater (H), the adiabatic humidifier (W), the cooler (C) and the auxiliary heater (RH) provided to the air conditioner (1) in accordance with each of the controlling lines (J.sub.1 -J.sub.5) set by the controlling line setter (18) to each of the capacity controllers (Y.sub.1 -Y.sub.4).