Air-conditioning apparatus

Abstract

The invention relates to an air-conditioning apparatus which regulates at least the temperature of at least one room to a predetermined temperature desired value (T RAUM SOLL ) by ventilation with heated or cooled supply air. The air-conditioning apparatus has a supply air motor ( 15 ) which feeds the supply air over a supply air channel ( 10 ) to the room ( 1 ) to be air-conditioned, a cooling and/or heating device ( 30, 40 33 ) for the cooling or warming of the supply air, and an exhaust air motor ( 16 ) which draws the exhaust air from the room ( 1 ) to be air-conditioned over an exhaust air channel ( 11 ). According to the invention, the desired value (P AB SOLL ) for the regulator of the exhaust air motor ( 16 ) forms a room excess pressure established with respect to the outside pressure (P A ).

1 . An air conditioning apparatus for controlling a temperature condition in at least one room to achieve a selected room temperature condition by ventilation using temperature adjusted supply air comprising:
 a supply air motor for supplying air at a supply air pressure through a supply air channel to the at least one room;   cooling heating means for adjusting a temperature of the supply air;   means for regulating the temperature of the supply air as a function of the difference between the room temperature and the selected room temperature;   means for regulating a pressure in the at least one room, the pressure being adjustably varied relative to an outside pressure to increase or decrease the room pressure in dependence on the difference between the selected room temperature and the actual room temperature.   
     
     
         2 . The air conditioning apparatus of  claim 1  further comprising a control arrangement for controlling the cooling heating means to adjust the temperature of the supply air. 
     
     
         3 . (canceled) 
     
     
         4 . The air conditioning apparatus of  claim 1  wherein the pressure regulating means regulates the room pressure by adjusting the supply air motor to alter the supply air pressure. 
     
     
         5 . The air conditioning apparatus of  claim 1  further comprising a control valve disposed in the supply air channel and wherein the pressure regulating means regulates the room pressure by adjusting the control valve. 
     
     
         6 . The air conditioning apparatus of  claim 1  wherein the pressure regulating means regulates room pressure by adjusting a speed of the supply air motor to supply a selected supply air pressure. 
     
     
         7 . The air conditioning apparatus of  claim 1  further comprising an exhaust air motor to withdraw air from the at least one room through an exhaust air channel. 
     
     
         8 . The air conditioning apparatus of  claim 7  further comprising means for regulating an amount of exhaust air withdrawn from the at least one room. 
     
     
         9 . The air conditioning apparatus of  claim 7  wherein the pressure regulating means regulates the room pressure by adjusting the supply air motor to supply a set increased selected supply air pressure to the at least one room and by adjusting the exhaust air motor to withdraw a selected amount of exhaust air from the at least one room. 
     
     
         10 . The air conditioning apparatus of  claim 7  wherein the pressure regulating means regulates the room pressure by increasing or decreasing a speed of the exhaust air motor, to adjust an amount of air withdrawn from the room through the exhaust air channel. 
     
     
         11 - 14 . (canceled) 
     
     
         15 . An air conditioning apparatus for conditioning the air in at least one room, a temperature condition of the at least one room controlled by ventilating the room with heated or cooled air delivered at a preset desired temperature value, the air conditioning apparatus comprising:
 a supply air motor for supplying the temperature controlled air to the at least one room through a supply air duct;   cooling-heating means integrated with the supply air duct for controllably cooling or heating the air supplied through the supply duct to the at least one room;   pressure regulating means for adjustably controlling a differential pressure in the room relative to an outside pressure for increasing or decreasing the room differential pressure to blend the delivered supply air with the air in the at least one room, the pressure control means assuring that the room pressure does not go below a predetermined minimum excess or a predetermined maximum excess pressure over the outside air pressure.   
     
     
         16 . The air conditioning apparatus of  claim 15  further comprising a control arrangement for controlling the cooling—heating means to adjust the temperature of the supply air. 
     
     
         17 . The air conditioning apparatus of  claim 15  wherein the pressure regulating means regulates the room pressure by adjusting the supply air motor to increase or decrease the supply air pressure delivered to the room. 
     
     
         18 . The air conditioning apparatus of  claim 15  further comprising a control valve disposed in the supply air channel supplying the room and wherein the pressure regulating means regulates the room pressure by adjusting the opening and closing of the control valve. 
     
     
         19 . The air conditioning apparatus of  claim 15  wherein the pressure regulating means regulates room pressure by adjusting a speed of the supply air motor to increase or decrease the speed to increase or decrease the pressure of the supply air delivered to the room. 
     
     
         20 . The air conditioning apparatus of  claim 15  further comprising an exhaust air motor for withdrawing air from the at least one room through an exhaust air channel connected thereto. 
     
     
         21 . The air conditioning apparatus of  claim 20  further comprising means for regulating an amount of exhaust air withdrawn from the at least one room. 
     
     
         22 . The air conditioning apparatus of  claim 20  wherein the pressure regulating means regulates the room pressure by adjusting the supply air motor to supply a set increased selected supply air pressure to the at least one room and by adjusting the exhaust air motor to withdraw an adjustable amount of exhaust air from the at least one room, a differential in the amount of supply air versus the amount of exhaust air increasing or decreasing the room air pressure. 
     
     
         23 . The air conditioning apparatus of  claim 20  wherein the pressure regulating means regulates the room pressure by increasing or decreasing a speed of the exhaust air motor, to adjust an amount of air withdrawn from the room through the exhaust air channel. 
     
     
         24 . The air conditioning apparatus of  claim 21  wherein the pressure regulating means adjusts the room pressure by adjusting the exhaust air regulating means to control the amount of exhaust air withdrawn from the room. 
     
     
         25 . The air conditioning apparatus of  claim 15  wherein the pressure regulating means effects an increase or decrease in room pressure only when an room temperature changes within a predetermined temperature range, and when the room temperature is lower than the predetermined temperature range, the pressure regulating means effects a room pressure having a first constant value, and when the room temperature is higher than the predetermined temperature range, the regulating means effects a room pressure having a second constant value. 
     
     
         26 . The air conditioning apparatus of  claim 25  wherein the pressure regulating means decreases the room pressure from a selected maximum room pressure to a selected minimum room pressure relative to an increase of the room temperature within the predetermined temperature range. 
     
     
         27 . The air conditioning apparatus of  claim 15  further comprising a control valve disposed in the exhaust air channel for withdrawing air from the at least one room and wherein the pressure regulating means regulates the room pressure by adjusting the opening and closing of the control valve. 
     
     
         28 . The air conditioning apparatus of  claim 15  further comprising humidifying-dehumidifying means integrated with the supply air duct for controllably humidifying or dehumidifying the air supplied through the supply duct to the at least one room, a relative humidity condition of the at least one room controlled by ventilating the room with humidified or dehumidified air delivered at a preset desired relative humidity value. 
     
     
         29 . The air conditioning apparatus of  claim 15  further comprising humidifying-dehumidifying means integrated with the supply air duct for controllably humidifying or dehumidifying the air supplied through the supply duct to the at least one room, based on a temperature, a pressure and a relative humidity of the at least one room.