DK168412B1 - Ventilation installation, in particular for stall ventilation - Google Patents

Ventilation installation, in particular for stall ventilation Download PDF

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Publication number
DK168412B1
DK168412B1 DK47192A DK47192A DK168412B1 DK 168412 B1 DK168412 B1 DK 168412B1 DK 47192 A DK47192 A DK 47192A DK 47192 A DK47192 A DK 47192A DK 168412 B1 DK168412 B1 DK 168412B1
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DK
Denmark
Prior art keywords
ventilation
damper
opening
closing position
close
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Application number
DK47192A
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Danish (da)
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DK47192A (en
DK47192D0 (en
Inventor
Ole Knudsen
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Dansk Staldindustri A S
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Priority to DK47192A priority Critical patent/DK168412B1/en
Publication of DK47192D0 publication Critical patent/DK47192D0/en
Publication of DK47192A publication Critical patent/DK47192A/en
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Publication of DK168412B1 publication Critical patent/DK168412B1/en

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Description

i DK 168412 B1in DK 168412 B1

Den foreliggende opfindelse angår et ventilationsanlæg, navnlig til staldventilation med mindst én cylindrisk ventilationskanal med en trompetlignende åbning og med et drejespjæld til regulering af luftmængden.The present invention relates to a ventilation system, in particular for housing ventilation with at least one cylindrical ventilation duct with a trumpet-like opening and with a rotary damper for controlling the air flow.

5 Vel nok den simpleste form for reguleringsorgan til regulering af luftstrømmen i ventilationsanlæg er et i en ventilationskanal anbragt plant pladeformet dreje-spjæld med en omdrejningsaksel fastgjort i symmetrilinjen. Spjældets fornemste dyd er dets enkelhed, medens 10 åbningskarakteristikken ikke er særlig fremragende, idet den fastlægges af en cosinusfunktion til spjældets vinkelstilling, og desuden kan spjældet ikke uden videre lukke helt tæt i lukkestillingen.5 Probably the simplest form of regulating means for regulating the air flow in ventilation systems is a flat plate-shaped rotary damper arranged in a ventilation duct with a rotary shaft fixed in the line of symmetry. The main virtue of the damper is its simplicity, while the opening characteristic is not very excellent, as it is determined by a cosine function for the angular position of the damper, and besides, the damper cannot easily close completely in the closing position.

Formålet med opfindelsen er ved ventilationsanlæg 15 af den nævnte art at tilstræbe en ligefrem proportionalitet mellem åbningsgrad og udsuget luftmængde i forening med en fuldstændig lukning i lukkestilling.The object of the invention is to aim at an even proportionality between the degree of opening and the extracted air volume in connection with a ventilation system 15 of the aforementioned kind with a complete closure in the closing position.

Ventilationsanlægget ifølge opfindelsen er ejendommeligt ved, at drejespjældet har en svunget form, 20 således at det med den ene side i lukkestilling ligger an mod siden af kanalåbningens krumme del og med den anden side ligger an mod kanalens cylindriske sidevæg.The ventilation system according to the invention is characterized in that the pivot damper has a pivoted shape, so that with one side in closing position it abuts against the side of the curved part of the duct opening and with the other side abuts the cylindrical side wall of the duct.

Ved denne udformning viser det sig, at man ret overraskende kan opnå en noget nær lineær åbningskarakteri-25 stik samt en fuldstændig tæt lukning i lukkestilling.In this embodiment, it turns out that it is quite surprising to achieve a somewhat close linear opening character connector as well as a completely close closure in the closing position.

At spjældet kun kan åbnes ved at drejes den ene vej på grund af en let asymmetrisk form, er ikke nogen egentlig ulempe.That the damper can only be opened by turning one way due to a slightly asymmetrical shape is not a real disadvantage.

Opfindelsen skal i det følgende belyses nærmere 30 under henvisning til medfølgende tegning, hvorpå fig.BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail with reference to the accompanying drawing, in which

1-4 viser et tværsnit i en udsugningsåbning i en udførelsesform for et ventilationsanlæg ifølge opfindelsen med spjældet vist i forskellige åbningsgrader. Tegningens fig. 5 viser et måleresultat fra et forsøg med det 35 pågældende anlæg.1-4 show a cross-section of a suction opening in one embodiment of a ventilation system according to the invention with the damper shown in different opening degrees. FIG. 5 shows a measurement result from an experiment with the 35 plant in question.

På tegningen er der kun vist de dele af ventila- DK 168412 B1 2 tionsanlægget, der er nødvendige for forståelse af opfindelsen. Indgangen til en loftmonteret cylindrisk udsugningskanal er monteret med en vandretsiddende karm med en trompetlignende form, der opadtil går over i en 5 cylindrisk form 4, der passer med udsugningskanalens sidevæg. I karmen er der monteret et drej esp jæld 6 med en omdrejningsaksel 8 forløbende diametrisk.The drawings show only those parts of the ventilation system that are necessary for understanding the invention. The entrance to a ceiling-mounted cylindrical suction duct is mounted with a horizontal seated frame with a trumpet-like shape, which upwards goes into a 5 cylindrical shape 4 which fits with the suction duct sidewall. In the frame is mounted a rotating spindle 6 with a rotational shaft 8 extending diametrically.

Spjældpladen har en særlig udformning med et øverste parti 10, der i lukkestilling ligger tæt an mod 10 karmens øvre cylindriske del, og som over et midterparti går over i et nederste parti 14, der i lukkestilling ligger tæt an op mod karmens trompetlignende form. Et længdesnit i spjældpladen fremtræder således som et stiliseret s.The damper plate has a special configuration with a top portion 10, which in the closing position is close to the upper cylindrical part of the frame 10, and which over a middle portion goes into a lower portion 14, which in the closing position is close to the trumpet-like shape of the frame. Thus, a longitudinal section of the damper plate appears as a stylized s.

15 På tegningens fig. 1 er spjældet vist i lukkestil ling, hvor det ses, at spjældpladen lukker fuldstændig tæt i karmen. Ved kendte drejespjæld med en cirkulær spjældplade slutter pladen ikke tæt mod kanalsiden, dvs. at der selv i lukkestilling er luftpassage gennem spjæl-20 det. På tegningens fig. 2 er spjældet vist med spjældpladen i let åben stilling. Som det ses fremkommer der under åbningen ret hurtigt en relativ stor åbningspassage 16, medens det ikke er tilfældet for den del af spjældpladen, der drejes op i udsugningskanalens cylin-25 driske del. Dette forhold er også illustreret på tegningens fig. 5, hvor kurven A er et resultat af forsøg med det pågældende spjæld. Som det ses, har spjældet en noget nær ligefrem proportional reguleringskarakteristik. Ved et drej esp jæld med en cirkulær spjældplade vil 30 reguleringskarakteristikken være meget flad ved lav åbningsgrad, ligesom der ved næsten fuldt åben stilling ikke sker noget. Det bedste reguleringsområde ligger omkring 45°. Ved opfindelsen derimod begynder spjældet hurtigt at lukke fra lukkestillingen som vist i fig. 3 35 og videre til fig. 4, hvor spjældet blot er givet en lille vinkeldrejning, men på grund af spjældpladens DK 168412 B1 3 karakteristiske form er der allerede sket en markant reducering af åbningsarealet. Den specielle udformning af spjældpladen har ingen forstyrrende eller kun forsvindende lille indvirkning på udsugningsstrømmen i 5 fuldt åben stilling.15 In the drawing FIG. 1, the damper is shown in the closing position, where it is seen that the damper plate closes completely in the frame. In the case of known rotary dampers with a circular damper plate, the plate does not close close to the channel side, ie. that even in the closing position there is air passage through the damper. In the drawing FIG. 2, the damper is shown with the damper plate in the slightly open position. As can be seen, a relatively large aperture passage 16 appears during the opening, while this is not the case for the part of the damper plate rotated in the cylindrical portion of the suction duct. This relationship is also illustrated in FIG. 5, where curve A is the result of experiments with the damper in question. As can be seen, the damper has a somewhat close to proportional control characteristic. In the case of a rotary shaft with a circular damper plate, the regulation characteristic will be very flat at a low aperture level, and nothing will happen at almost fully open positions. The best regulatory range is around 45 °. In the invention, on the other hand, the damper starts to close quickly from the closing position as shown in FIG. 3 and on to FIG. 4, where the damper is merely given a slight angular rotation, but due to the characteristic shape of the damper plate DK 168412 B1 a marked reduction of the opening area has already been made. The special design of the damper plate has no disturbing or only negligible effect on the suction flow in the fully open position.

Det overraskende ved opfindelsen er, at man med så enkle løsningsmidler er i stand til at opnå en reguleringskarakteristik, hvor der så at sige er næsten ligefrem proportionalitet mellem åbningsgrad og luftmængde, 10 hvilket er bemærkelsesværdigt ved så enkel konstruktion. Yderligere kan spjældet lukke fuldstændig tæt i lukkestilling.What is surprising about the invention is that with such simple solvents one is able to achieve a control characteristic, where there is almost even proportionality between the degree of opening and the airflow, which is remarkable in such a simple construction. Furthermore, the damper can close completely in the closing position.

Claims (1)

DK 168412 B1 Ventilationsanlæg navnlig til staldventilation med mindst én cylindrisk ventilationskanal med en trompetlignende åbning (2) og med et drejespjæld til regulering af luftmængden, kendetegnet ved, at dreje-5 spjældet (6) har en svunget form, hvis ene side (14) i lukkestilling ligger an mod den krumme del af kanalåbningen, og hvis anden side (10) ligger an mod kanalens cylindriske del (4).DK 168412 B1 Ventilation system in particular for housing ventilation with at least one cylindrical ventilation duct with a trumpet-like opening (2) and with a rotary damper for controlling the airflow, characterized in that the rotary damper (6) has a curved shape, one side (14) in the closed position abuts the curved part of the channel opening and the other side (10) abuts the cylindrical part of the channel (4).
DK47192A 1992-04-08 1992-04-08 Ventilation installation, in particular for stall ventilation DK168412B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK47192A DK168412B1 (en) 1992-04-08 1992-04-08 Ventilation installation, in particular for stall ventilation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK47192 1992-04-08
DK47192A DK168412B1 (en) 1992-04-08 1992-04-08 Ventilation installation, in particular for stall ventilation

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Publication Number Publication Date
DK47192D0 DK47192D0 (en) 1992-04-08
DK47192A DK47192A (en) 1993-10-09
DK168412B1 true DK168412B1 (en) 1994-03-21

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DK47192A DK168412B1 (en) 1992-04-08 1992-04-08 Ventilation installation, in particular for stall ventilation

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DK47192A (en) 1993-10-09
DK47192D0 (en) 1992-04-08

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