Automatic temperature and humidity regulation – Ventilator type – Electrically actuated
Patent
1990-08-17
1991-12-10
Wayner, William E.
Automatic temperature and humidity regulation
Ventilator type
Electrically actuated
165 22, 364505, F24F 700
Patent
active
050710656
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a procedure for controling and maintaining air currents or equivalent in an air-conditioning installation, and an air-conditioning system according to said procedure.
The control and adjustment of air-conditioning installations are nowadays based on the use of pick-ups and controllers and control members of different kinds. Theoretically, the installations are expected to operate well, but in practice soiling, ageing and electrical creeping, insensitivity of the pick-ups, as well as difficulties in finding appropriate locations for pick-ups result in that majority of even the most modern air-conditioning installations operate unsatisfactorily. Defects occur in particular in energy economy and in optimizing the use. Moreover, feeling of well-being is unsatisfactory.
The object of the invention is, therefore, a novel air-conditioning system in which the efficiency of the system has been increased. The design of the invention is based on a system in which the properties of the air-conditioning apparatus, control means and ducts, and in particular, the specific graphs of the air-conditioning apparatus and control means are known. In the system of the invention such components are used which are controllable in setting and in which the control setting is further transmitted to a controller unit. In the system according to the invention, a controller unit comprises, stored in its memory, the operation parametres and specific graphs of the control member used in the system. The control units of different control members are functionally interconnected through data transmission buses. When one control member of the system is affected in the system of the invention, checking is immediately carried out concerning the other control members to find out whether they are in need of a setting repair owing to the new position of said control member.
As taught by the invention, a system has been provided which comprises a trunk duct system and zone ducts branching from the trunk duct. From the zone ducts are further provided incoming lines to the spaces to be air-conditioned. The invention teaches that the system may further comprise corresponding parts on the air outlet side, a duct going out of the space to be air-conditioned, said duct terminating in a zone duct which leads further to the trunk duct of the outlet side. Furthermore, the system comprises an air conditioning apparatus, preferably a blower producing air flow and being located in the trunk line. In the system of the invention the trunk line may further comprise control members, e.g. control dampers. The zone ducts branching from the trunk line comprise further a duct opening control member located in the adjacency of the joining point of the duct and the trunk line, advantageously a control damper. Respectively, an inlet duct branching from the zone line to the space to be air-conditioned comprises a control member, advantageously a control damper. The control member may, however, be in the design of the invention any control means. Similarly, in the system of the invention the air-conditioning machine may preferably be a blower, but also any other air flow producing apparatus.
What is fundamental to the system of the invention is that when a control member of the system is affected e.g. in order to increase the need of air-conditioning and incoming air in a room space, information concerning this aspect is transmitted further to other control members of the system. First, the control members of the zone line are affected, and if an increased quantity of air is needed through the blower connected to the trunk line, the rpm volume of the blower is further increased, or increasing the air quantity entering through the trunk line is affected in other ways. In the system of the invention the positions of the control members are determined through programs utilizing the system.
The entire system design may be located in a controller unit of a control member of a duct leading to a space to be air-conditioned, or in the controller uni
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patent: 4497031 (1985-01-01), Froehling et al.
patent: 4616325 (1986-10-01), Heckenbach et al.
patent: 4630221 (1986-12-01), Heckenbach et al.
patent: 4821526 (1989-04-01), Otsuka et al.
patent: 4843084 (1989-01-01), Parker et al.
Aalto Erkki
Mattila Timo
Niemela Mertsi
Rantanen Pertti
Halton Oy
Wayner William E.
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