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Procedure for controlling and maintaining air currents or equivalent in an air-conditioning installation, and an air-conditioning system according to said procedure

  • US 5,071,065 A
  • Filed: 08/17/1990
  • Issued: 12/10/1991
  • Est. Priority Date: 01/13/1989
  • Status: Expired due to Term
First Claim
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1. A procedure for controlling and maintaining air currents or equivalent in an air-conditioning installation or equivalent, said air conditioning installation comprising one or several air conditioning machines (P) for producing the desired flows, and one or several duct systems for conducting the flows into the desired room spaces (H1,H2 . . . ) or equivalent, and/or from room spaces (H1,H2 . . . ) or equivalent, said duct systems being composed of requisite trunk, zone and room duct systems (R,Z,C), and said duct systems being provided with three or more control members (S1,S1.1,S1.2, . . . ;

  • S2,S1.1,S2.2 . . . ) on different levels of hierarchy, for controling the air currents or equivalent, and with one or several control systems for defining, controlling and maintaining the requisite air flows or equivalent, in which control systems are used such controller units (E1,E1.1,E1.2 . . . ;

    E2,E2.1 . . . ) between which exists a data transfer connection through the data transfer buses (T1) or equivalent and said controller units (E1,E1.1,E1.2 . . . ;

    E2,E2.1 . . . ) having a memory for storing data and programmable capacity for processing the data, characterized in that in the procedure the volumetric flow rates of the air required at different points of the air conditioning system at different times are defined on the basis of the air temperature and/or air quality and/or air noise levels and/or air pressure conditions, and/or other equivalent factors, and on the basis of the defined volumetric air flow rates at the same time, the combination of the set values of the control members (S1, S1.1,S1.2 . . . ;

    S2,S2.1,S2.2 . . . ) and of the air conditioning machines (P) is defined at the same time, with which the defined volumetric air flow quantities are realized, and at the same time the required control members (S1,S1.1,S1.2 . . . ;

    S2,S2.1,S2.2 . . . ) and the air-conditioning machines (P) are set to the set values consistent with said set value combination, and that when any air current in the system, respectively its volumetric flow rate is changed, a new set value combination is determined for the control members (S1,S1.1,S1.1,S1.2 . . . ;

    S2,S2.1,S2.2 . . . ) and for the air-conditioning machine (P), and the control members (S1,S1.1,S1.1,S1.2 . . . ;

    S2,S2.1,S2.2 . . . ) and for the air-conditioning machines (P) are set to the settings implied by the new combination.

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