Heat exchange – With valve or movable deflector for heat exchange fluid flow – With by-pass of heat exchanger or heat exchanger section
Patent
1989-12-18
1991-07-23
Tapolcai, William E.
Heat exchange
With valve or movable deflector for heat exchange fluid flow
With by-pass of heat exchanger or heat exchanger section
165 56, F24F 13072
Patent
active
050333615
DESCRIPTION:
BRIEF SUMMARY
The invention relates to equipment for supplying air as well as heat emission and/or absorption at a ceiling, including an elongate intake or fresh air supply device placed in or somewhat below the ceiling and at least one elongate panel arranged substantionally horisontally in the ceiling, consisting of heat conductive material and having heat emission and/or absorption means.
In a known type of such equipment, heat emitting panels are placed as the bottom wall in the fresh air supply device formed as a pressure box, one or more apertures through which air is blown being directed vertically downwards, so that the incoming air flows straight down from the ceiling. The heating panels emit radiant heat, but the fresh air hardly comes into contact with these panels, at least not to such a degree that any substantial heat transmission takes place. In certain types of this known equipment, there is additional or alternative heat absorption, i.e. cooling walls in the pressure box or on one side thereof, but neither do these walls or panels have any substantial degree of thermal exchange with the fresh air.
The known arrangements have certain disadvantages: the fresh air flowing vertically into a room can lead to cold draught, it is difficult to achieve any controlled, circulating air flow in a room, and no coaction is obtained between the fresh air, on the one hand, and the heat emitting or absorbing panels, on the other hand.
The object of the present invention is to achieve, against this background, an improved ventilation equipment of the kind referred to above, which gives controlled air flow in a room, and also enables thermal exchange between the fresh air and the heat emitting or absorbing panels.
This object is achieved by the distinguishing features disclosed in claim 1, the fresh air supply device here being formed such that air is blown in laterally along the underside of the panel or panels, enabling the blown-in air flow to coact thermally therewith.
A series of advantages are obtained with this arrangement, viz.:
ventilation, cooling and heating can be achieved with a single system, particularly if the fresh air supply device and panels comprise mutually connectable aluminum profile sections (cf. claims 7, 9 and 11);
effective thermal exchange is achieved between the fresh air and panels;
a controlled, circulating air flow is enabled, while cold draught at windows can be counteracted;
warm air which has risen by convection is recirculated from the ceiling to remaining parts of the rooms;
the ventilation equipment can be placed at the same level as light fittings in a false ceiling, whereby an undisturbed air flow in the upper part of the room can be achieved;
a low flow rate is obtained due to the elongate blowing-in aperture (cf. claim 2);
the equipment enables a simple configuration and simple installation, as well as relatively low production and installation costs;
the equipment is flexible, since the fresh air supply device can be given a desired length, it thus being well-suited for modular buildings.
Suitable embodiments and further distinguishing features of the ventilation equipment in accordance with the invention are disclosed in claims 2-16, and will now be described in more detail below with reference to the accompanying drawings, where
FIG. 1 is a cross-section through an intake or fresh air supply device and ceiling heating panels in accordance with the invention;
FIG. 2 illustrates in a schematic cross-sectional view how the equipment according to FIG. 1 is placed in the false ceiling of a room;
FIGS. 3 and 4 are perspective views from below of the equipment according to FIG. 1;
FIGS. 5 and 6 are cross-sections, in larger scales, through the blowing-in aperture of the fresh air supply device;
FIGS. 7, 8 and 9 illustrate an application of the invention with modular air supply devices and panels connected to supply units.
The ventilation equipment illustrated in FIGS. 1-6 essentially comprises an elongate fresh air supply device 2, which is arranged in a false ceiling under the ceilin
REFERENCES:
patent: 1771269 (1930-07-01), Musgrave et al.
patent: 2245470 (1941-06-01), Fuchs
patent: 3744556 (1973-07-01), Church
patent: 3815486 (1974-06-01), Morrison
patent: 4488408 (1984-12-01), Kajitsuka
patent: 4703685 (1987-11-01), Meckler
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