Ventilation – Having inlet airway – Including specific air distributor
Patent
1993-03-23
1994-11-01
Joyce, Harold
Ventilation
Having inlet airway
Including specific air distributor
454256, F24F 300, F24F 706
Patent
active
053603745
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION AND PRIOR ART
The present invention relates to an apparatus for desks for influencing the exchange of heat between a person sitting at the desk and the ambient air.
It is well known that there may be very great differences between different persons concerning how they experience one and the same climate condition, for instance in a room with approximately normal room temperature, in particular when the persons are seated. This may depend on differences in clothing, activity level, tiredness and the individual basic heat generating and emission level of the body of a person inter alia depending on the clothes habits established. Furthermore, personal feelings also matter--e.g. some persons like to "be cold" while others hate it.
These differences in experiences of one and the same climate of course give rise to problems, when a great number of persons have to stay in one and the same room for a longer period of time, such as for instance in an office with several desks placed in one and the same room, which is built up as an office landscape. However, hitherto existing climate plants for such rooms have not taken said differences into consideration, but tried to establish the same thermal conditions in the whole room, which logically always leads to that some of the persons being in the room will not be satisfied with the conditions prevailing. Should any person say that he is cold and wish a temperature rise, it will often take a comparatively long time before this could be realized and the power consumption will thus be considerable, and at the same time any other person may get angry because it gets too hot for him.
It would therefor be desirable to provide an apparatus making it possible to influence the so called micro climate at one single desk in such an office landscape, and do this in a remarkable way while almost negligibly influence the micro climate at neighbouring desks. It would then also be desired that such an apparatus enables very rapid changes of the climate conditions for the person sitting at the desk in question as well as that the air quality (the degree of freshness, percentage of outdoor air) in the inhalation organs is under the control of the individual.
BRIEF DESCRIPTION OF THE INVENTION
The object of the present invention is to provide an apparatus with the desired features mentioned above for influencing the climate conditions in the immediate vicinity of a desk.
This object is obtained by providing an apparatus of the kind mentioned in the introduction with means arranged to cause air with a temperature differing from the main room air to enter into contact with substantial surface portions of the body of a person sitting at the desk.
The heat exchange between the body of the person sitting at the desk and the ambient room air may by an apparatus of that kind be considerably influenced, without persons sitting at a very short distance, down to about 1 meter, from the desk feeling any change in climate. This means that, starting from a basic room climate adapted to the needs of the majority, a person having quite different needs than the average will be satisfied without any disadvantage of the other people working.
An apparatus of the type according to the invention enables also a very rapid and accordingly a proper influence of the micro climate at a desk demanding low costs.
The definition desk does not exclusively comprise conventional desks, but also other types of tables which like desks function as a working place for a seated person.
According to a preferred embodiment of the invention said means comprise air stream generating members arranged to generate streams of air having a temperature differing from the main room air from a region located under the desk top in front of and at least at the height that the knees of a person sitting at the desk would have and towards the trunk of such a person while passing above the thighs of the person. Such an apparatus gives rise to very large surface portions of the body of the person in question being
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"Personal Environments", Publication No. 2423, Johnson Controls, Inc., 1989.
"Climadesk", Mikroklimat Sweden AB, Bromma, Sweden, Date unknown.
English translated Abstract, 457,409 Sweden.
Larsson Stefan
Wyon David
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