FI109725B - Device for cooling the room air - Google Patents

Description

109725

Device for cooling the room air

Technical area

The present invention relates to a device of the type of ceiling panel 5 or profile for self-circulating cooling of room air, comprising a vertically and horizontally closed, upward and sideways enclosed chamber in the room ceiling area with a lower horizontal wall portion of the lower portion, means for importing primary air 10, and a cooling element, wherein a vertically spaced divider wall extends inwardly from the lower wall portion inlets between the vent openings, and the divider wall is connected to the

BACKGROUND OF THE INVENTION The use of cooling water-filled ceiling panels or profiles for treating room air is known. These systems are inexpensive compared to ventilation and air conditioning systems because they are energy efficient and do not cause noise or draft. Such devices are described, for example, in the patent publication. 20 US-A-4 397 157, GB-A-2 107 856, GB-A-1 468 754, US-A-3 833 051 and EP-A-256 0361. They can also be combined with air ducts to produce • · · ! untreated primary air as described, for example, in GB-A-1011742 and GB-A-2 271 175.

• · ·; ··; The panels generally comprise a frame consisting of metal profiles. These are so constructed and secured to the ceiling that the warm room air can flow vertically upwards between the panels, after which the hot air is cooled by the cooling elements in the panel and, due to its increased tightness, sinks down in the panel. The panels or profiles thus provide · "*: without self-rotation and its room temperature control.

One disadvantage of these panels is the accumulation of dust and other particles over time on horizontal surfaces. Panels or profiles can also cause condensation under certain conditions, which may, together with dust particles, form a breeding ground for molds. Cleaning these surfaces usually requires the dismantling of ceilings, which is both time consuming and complicated.

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Technical problem

It is an object of the present invention to provide an apparatus for cooling room air in combination with primary air supply, which has minimal dust collection surfaces, is also easy to clean 5 and produces a flow along the underside of the ceiling.

Solution

The problem is solved by the devices according to claims 1 and 2. The primary air generating means are arranged such that primary air is provided to a portion or sections of the chamber closest to the outlet, and so that an air stream flowing out of the outlet 10 flows along the underside of the roof. Thanks to this design, the device achieves a short air passage that passes smooth and clean-friendly surfaces, as well as an inexpensive outflow direction.

Description of the drawings

The invention will be described below with reference to the embodiments shown in the accompanying drawings, in which Figure 1 schematically shows a sectional view of a device according to a first embodiment of the invention, Figure 2 similarly shows a second embodiment of the invention; Figure 4 illustrates, in a manner similar to Figure 1, a fourth embodiment of the invention.

DESCRIPTION OF EMBODIMENTS * The device shown in the drawings comprises a chamber 14 defined by oblique wall portions 10, vertical wall portions 11 and horizontal upper and lower wall portions 12: 25 and 13.

v · 'The same reference numerals are used in the corresponding details of the four embodiments.

The length of the chamber 14 may be optional and is mounted on the ceiling • *. · ·. 15 so that the oblique wall portions 10 are connected to the underside of the ceiling.

In the embodiment shown in my figure, the vertical separation wall 16 extends upwardly from the lower wall portion 13 to a level approximately equal to half the height of the chamber. The upper edge of the partition wall 16 is connected to the other side of the cooling element 17, which element comprises a large number of convection plates and a tube 18 containing the cooling medium, wherein the cooling medium 35 is generally water. The cooling element 17 in this embodiment extends obliquely upwardly towards the angle between the wall sections 12 and the second wall section 11.

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A vent passage 22 having one or more discharge nozzles 23 is provided in a portion of the chamber 14 bounded by a separating wall 16 and a cooling element 18 closest to the discharge port 20. The nozzle or nozzles 23 are directed obliquely towards the air stream 21 through the chamber towards the outlet port 20.

Alternatively, the heat sink may lie horizontally relative to wall 11 or stand vertically relative to wall portion 12.

The gap 19 between the second edge of the lower wall portion 13 and the left oblique wall portion 10 of Figure 1 provides an inlet to the chamber 14. Similarly, the gap 20 between the second edge of the lower wall portion 13 and the right oblique wall portion 10 of Figure 1

The heated room air enters the chamber 14 through the inlet opening 19 and passes the upper edge of the separating wall 16. When in contact with the cooling element 17, the air cools and achieves a higher density. In this case, the air sinks down from the right side of the separation wall 16 of Fig. 1 and conveys with the primary air produced through the nozzles 23 through the outlet slot 20. The primary air participates in the circulation through the cooling unit and the direction of the outgoing air.

The chamber 14 forms a space separate from the space between the suspended ceiling 15 and the invisible upper beam, which contains very small surfaces, which are capable of collecting dirt and dust particles. Furthermore, these impurities can be easily removed by removing the wall portion 13 and sucking or wiping; / said surfaces.

Fig. 2 illustrates a similar embodiment in which the separating wall ..li '16 is converted to a ventilation air duct 22 with nozzle openings 23. In addition, the flow through the nozzle openings 23 is directed so that air flows: Τ: out below the ceiling 15.

Figure 3 illustrates a variant of the invention in which the inlet openings 19 are centrally located in the chamber wall 13. The vent air duct 22 is disposed. ** ·. centrally to the chamber 14. Two partition walls 16 extend upwardly from the chamber wall * · ”30 of these 13 upwardly from each of the channels 22. The cooling element: '* 18 is located in the passage between the separating wall 16 and the vertical wall portions 11 of the chamber 14. The nozzle openings 23 extend out of the duct 22 from each partition wall 16 towards the slit openings 20. This design achieves an I · · double function compared to Figures 1 and 2.

Figure 4 illustrates an embodiment of the invention in which centrally located inlet openings 19 allow room air to enter chamber 14 between two vent walls formed as a ventilation duct 22 having nozzle openings 23. As in the embodiment previously described with reference to Figure 3, 16 and the vertical wall portions 11 of the chamber 14.

5 All embodiments of the invention form a structure closed between the suspended ceiling and the beam in which the interior surfaces are easy to clean without dismantling the suspended ceiling. The device also forms a unit which acts as an acoustic barrier in the ceiling of the room and which can cooperate with other units located in parallel.

The invention is not limited to the embodiments mentioned above, but other variations are envisioned within the scope of the following claims.

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Claims (4)

Apparatus of the type of suspended ceiling panel or profile for self-circulating cooling of room air, comprising a chamber (14) formed from wall portions (10-13) arranged vertically and horizontally in the area of the room ceiling (15). having inlet and outlet ports (19, 20) respectively for room air disposed spaced apart in a lower horizontal wall portion (13) of the lower chamber, members (22, 23) for introducing primary air, and a cooling element (18), 16) extends upwardly from the lower wall portion (13) between the inlet and outlet openings (19, 20), and the separation wall (16) is connected to a cooling element (18) disposed on the outlet side of the separating wall (16) closest to the outlet port (20), characterized in that said means (22, 23) are arranged so as to produce primary air a portion of the chamber (14) closest to the outlet (20) and so that air passing through the outlet (20) flows along the underside of the suspended ceiling (15). A device of the type of ceiling panel or profile for self-circulating cooling of a room air, comprising ... 20 wall sections (10-13) arranged vertically and horizontally in the area of the room ceiling (15), upwardly and sideways the elements (22, 23) for the primary air supply of the enclosed chamber (14) having inlet and outlet openings (19, 20), respectively, spaced apart in the lower horizontal wall portion (13) of the lower chamber portion; and two or more cooling elements (18), wherein two or more vertically arranged separating walls (16) extend upwardly from the lower wall portions (13) between the inlet and outlet openings (19, 20), and the separating walls (16) communicate with the cooling elements. . ·. : (18) placed on the outlet side of the partition wall (16) to limit it. ···! a portion of the chamber (14) closest to the outlet (20), characterized in that said members (22, 23) are arranged so that primary air is produced: '·· the portion of the chamber (14) closest to the outlet (20) and , that air passing through the outlet (20) flows along the underside of the ceiling (15). . ···. Device according to claim 1 or 2, characterized in that the partition wall (s) (16) are formed as a ventilation duct (22) having at least one nozzle opening (23) forming said member. 109725 6 Device according to Claim 1 or 2, characterized in that the chamber (14) has an elongated shape and is mounted horizontally in the space between the beam and the ceiling (15) and has wall portions (10) which are connected to an opening in the ceiling. a a a • a * · · • a · a · a · a a «a a • a · a a a a a a • a • a a a t a 7 109725