FI91994C

FI91994C - Supply air

Info

Publication number: FI91994C
Application number: FI923411A
Authority: FI
Inventors: Tapio Paananen; Juhani Laine; Christer Groenlund
Original assignee: Sanhem Konsultit Oy
Priority date: 1992-07-28
Filing date: 1992-07-28
Publication date: 1994-09-12
Also published as: FI91994B; FI923411A0; FI923411A

Description

91 99491 994

Tuloilmaelin - Tilluftsdon Tåmån keksinnon kohteena on tuloilmaelin, joka muodostuu 5 tuloilmakotelosta, jonka vaippaseinåmå on osittain tai koko-naan rei'itetty ja jonka tuloilmaputki on liitetty tuloilma-kanavaan, ja jonka yleisin sijoituspaikka on huonetilan katto.The present invention relates to a supply air element consisting of 5 supply air housings, the jacket wall of which is partially or completely perforated and the supply air pipe of which is connected to the supply air duct, and the most common location of which is the ceiling of the room.

10 Epåkohtana tåmån tapaisilla tunnetuilla tuloilmaelimillå on se, ettå sisåån tuleva alilåmpoinen ilma purkautuu tuloilma-elimestå alaspåin. Mikåli sisåån tulevan ilman ja huoneti-lassa olevan ilman låmpotilaero on esimerkiksi noin 10°C, tuntuu vetoa. Keksinn5n tarkoituksena on poistaa edellå esi-15 tetty epåkohta. Keksinnon mukaiselle tuloilmaelimelle on tunnusomaista se, ettå tuloilmaputken påå, joka avautuu tu-loilmakoteloon alaspåin, ulottuu tuloilmakotelon rei'ittå-måttomån påådyn låheisyyteen, jolloin huonetilaan tuleva ilma suuntautuu yl6spåin. Keksinnon mukaisella tuloilmaeli-20 mellå saadaan aikaan suuri painehåvio, lyhyt heittopituus, alilåmpoisen ilman vedoton sisåånpuhallus ja alhainen ååni-taso yksinkertaisella ja varmatoimisella rakenteella. Tuloilmaelin voidaan suunnitella ja rakentaa my6s siten, ettå se toimii paloteknisenå kuristimena, kun vaippaseinåmåsså 25 olevien reikien lukumåårå rajoitetaan sopivaksi. Palotekni- sen kuristimen suurin sallittu ilmavirta on 42 dm3/s 100 Pa:n paine-erolla. Itse tuloilmaelin voi olla mitoitettu 5-400 dm3/s.10 A disadvantage of known supply air elements of this type is that the incoming low-temperature air is discharged downwards from the supply air element. If the temperature difference between the incoming air and the air in the room is, for example, about 10 ° C, traction is felt. The object of the invention is to eliminate the above-mentioned drawback. The supply air element according to the invention is characterized in that the end of the supply air pipe, which opens downwards into the supply air housing, extends in the vicinity of the perforated end of the supply air housing, whereby the air entering the room space is directed upwards. The supply air element 20 according to the invention provides a high pressure drop, a short throw length, a draft-free supply of low-temperature air and a low sound level with a simple and reliable structure. The supply air element can also be designed and constructed in such a way that it acts as a fire choke when the number of holes in the jacket wall 25 is limited to suit. The maximum permissible air flow of the fire choke is 42 dm3 / s with a pressure difference of 100 Pa. The supply air element itself can be dimensioned 5-400 dm3 / s.

30 Keksinnon eråålle sovellutusmuodolle on tunnusomaista se, ettå tuloilmaputki ulottuu koaksiaalisesti tuloilmakotelon vaippaseinåmåsså olevan rei'ityksen ohi. Nåin olien saadaan kaikki huonetilaan tuleva ilma suunnattua yl6spåin.An embodiment of the invention is characterized in that the supply air pipe extends coaxially past the perforation in the jacket wall of the supply air housing. In this way, all the air entering the room is directed upwards.

35 Keksinnon eråålle toiselle sovellutusmuodolle on tunnusomaista se, ettå tuloilmakotelon toinen pååty, jonka låpi tuloilmaputki kulkeutuu, on varustettu sinånså tunnetulla • paineenmittauskammiolla. Nåin olien saadaan hyvin tarkka 2 91994 ilmavirran mittaus ilmavirran måårittåmiseksi, kun paineen-mittauskammioon yhdistetåån paine-eromittari.Another embodiment of the invention is characterized in that the second end of the supply air housing, through which the supply air pipe passes, is provided with a pressure measuring chamber known per se. In this way, a very accurate 2 91994 air flow measurement is obtained to determine the air flow when a differential pressure gauge is connected to the pressure measuring chamber.

Keksintoå selostetaan seuraavassa esimerkin avulla viittaa-5 malla oheiseen piirustukseen, joka esittåå keksinnon mukais-ta tuloilmaelintå halki leikattuna.The invention will now be described, by way of example, with reference to the accompanying drawing, which shows a cross-section of a supply air element according to the invention.

Tuloilmaelin muodostuu tuloilmakotelosta l, jonka vaippasei-nåmå 2 on rei'itetty. Tuloilmaelimen tuloilmaputki 3 on lii-10 tetty tuloilmakanavaan 4. Tuloilmaputken påå 5, joka avautuu tuloilmakoteloon 1, ulottuu tuloilmakotelon rei'ittåmåttomån påådyn 6 låheisyyteen. Kuten kuviosta kåy ilmi, ulottuu tu-loilmaputki 3 koaksiaalisesti tuloilmakotelon vaippaseinå-måsså 2 olevan rei'ityksen ohi. Tuloilmakotelon 1 toisessa 15 påådysså 7 on sinånså tunnettu paineenmittauskammio 8. Pai-neenmittauskammioon liitetåån paine-eromittari 9, kun suori-tetaan paine-eromittaus.The supply air element consists of a supply air housing 1, the jacket wall 2 of which is perforated. The supply air pipe 3 of the supply air element is connected to the supply air duct 4. The end 5 of the supply air pipe, which opens into the supply air housing 1, extends in the vicinity of the non-perforated end 6 of the supply air housing. As can be seen from the figure, the supply air pipe 3 extends coaxially past the perforation in the jacket wall 2 of the supply air housing. At the other end 7 of the supply air housing 1 there is a pressure measuring chamber 8 known per se. A differential pressure gauge 9 is connected to the pressure measuring chamber when the differential pressure measurement is performed.

Tuloilmaelimen yleisin sijoituspaikka on huonetilan katto, 20 mutta se voidaan luonnollisesti myos sijoittaa huonetilan seinåmåån. On myås itseståån selvåå, ettå tuloilmaelin sopii kåytettåvåksi poistoilmalaitteena. Ilmavirtaus on nåin olien vain påinvastainen kuin esimerkisså on esitetty.The most common location of the supply air element is the ceiling of the room, 20 but it can of course also be placed in the wall of the room. It is also self-evident that the supply air element is suitable for use as an exhaust air device. The air flow is thus only the opposite of that shown in the example.

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Claims

91994

1. A tufuftsdon, which comprises a tuft (1), a sheath (2) and a tongue or flap perforator and a tuft (3) and a trough for the tuft channel (4) and a plurality of lower troughs outside the trough 25 all of these parts (3) and (5) of the same type (1) are not used, the number of parts of the active part (6) is shown.

A supply air element consisting of a supply air housing (1), the jacket wall (2) of which is partially or completely perforated and the supply air pipe (3) of which is connected to the supply air duct (4), 5 and most commonly located in a room ceiling, that the end (5) of the supply air pipe (3), which opens downwards into the supply air housing (1), extends in the vicinity of the non-perforated end (6) of the supply air housing, whereby the air entering the room space is directed upwards. 10

2. A patent according to claim 1, which can be used to coax (3) a device coaxially for a cartridge (1) with a cover (2) for perforating the perforation.

Supply air element according to Claim 1, characterized in that the supply air pipe (3) extends coaxially past the perforation in the jacket wall (2) of the supply air housing (1).

Supply air element according to Claim 1 or 2, characterized in that a pressure measuring chamber is known per se at the other end of the supply air housing through which the supply air pipe passes.

20 Patentkrav

3. A patent according to claims 1 or 2, comprising 35 figures per second, the genome being a single column, or a portion of a trick screen.