Ventilation – Having inlet airway – Including specific air distributor
Patent
1998-08-19
2000-10-24
Joyce, Harold
Ventilation
Having inlet airway
Including specific air distributor
454297, 454299, 454305, 454306, F24F 13068
Patent
active
061358770
DESCRIPTION:
BRIEF SUMMARY
FIELD OF INVENTION
According to one aspect, the present invention relates to a box-like or screen-like supply air terminal device of the kind defined more specifically in the preamble of claim 1.
According to another aspect, the invention relates to a nozzle module for use with such a supply air terminal device.
Supply air terminal devices of this kind, for instance those devices marketed under the trademark REPUS.RTM., find versatile use for draught-free delivery of temperature controlled air to different types of work places, for instance offices, and to dwellings. The air delivered by the device has a low impulse and the device can therefore be placed in the immediate vicinity of a work place in many cases and in this way ensure a considerably better quality of air at the work place than would otherwise be the case.
When cold fresh air is delivered to supply air terminal devices of this kind, air is also taken from the occupied zone in the room or place in which the device is placed and preferably mixed with the cold air in suitable proportions, so as to avoid cold draughts on the floor of the room.
DESCRIPTION OF THE BACKGROUND ART
Examples of known supply air terminal devices of this kind are described in SE-B-7613876-7, SE-B-77043362-8, SE-B-7810734-9, U.S. Pat. No. 4,537,118 and EP-A-0 337 971, all in the name of Lind.
Other known solutions utilize air distribution filters which produce a laminar inflow. However, such solutions do not result in satisfactory admixture with surrounding air. The filters also become clogged and must be replaced at regular intervals. Such solutions are therefore both complicated and expensive.
Other examples of the earlier standpoint of techniques are found in WO 90/02912 (Papula Rein Lathela), DE-C-4 428 655 (Erwin Muller) and in DE-C-4 026 529 (H. Kranlz-TKT)
OBJECTS OF THE INVENTION
One object of the invention is to provide an improved supply air terminal device which, without the use of filters, enables room air to be admixed effectively with cold air and which delivers temperature controlled air to the room in an effective and draught-free fashion.
Another object of the invention is to provide a compact supply air terminal device which, according to one preferred embodiment, enables the direction in which the air leaves the device to be adapted individually in a simple fashion.
A further object of the invention is to provide a supply air terminal device with which air exiting from the nozzle openings of the device is distributed more uniformly than in the case of hitherto known supply air terminal devices.
According to a second aspect of the invention, one object is to provide a nozzle module for a supply air terminal device of the aforesaid kind that is separate from the main part of the terminal device and which can be easily fitted thereto. Another object is to provide a nozzle module that can be mass-produced in large numbers and which, in the case of one preferred embodiment, enables the air exiting from the terminal device to be readily controlled within wide limits.
SUMMARY OF THE INVENTION
These and other objects are fulfilled with an inventive supply air terminal device of the aforementioned kind and having the characteristic features set forth in the characterizing clause of claim 1.
The advantages afforded by the invention are governed by the nozzle modules that are located immediately behind the slot-like apertures and that by virtue of their design capture equally as large part-flows to each slot-like aperture. These part-flows are deflected through about 90.degree. two times before passing each slot-like aperture and effective admixture of the fresh air delivered via the supply air terminal device is with room air is achieved effectively by virtue of the configuration and positioning of these slots-like apertures.
Because each group of slot-like apertures is allocated to a particular nozzle module, both the manufacture of the terminal device and fitting of the nozzle module are simplified. One preferred embodiment of the invention also enable
REFERENCES:
patent: 3319558 (1967-05-01), Bodian
patent: 4316407 (1982-02-01), Lambert
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