NO127293B

NO127293B -

Info

Publication number: NO127293B
Application number: NO04790/69A
Authority: NO
Inventors: Luigi Roda
Original assignee: Roda Sa Flli
Priority date: 1968-12-23
Filing date: 1969-12-04
Publication date: 1973-06-04
Also published as: FI47324C; CS163760B2; IE34253B1; IE34253L; JPS5021906B1; CH501536A; US3688948A; SE385267B; BR6915547D0; BG25508A3; YU307069A; RO59885A; CA927335A; FI47324B; YU32420B

Description

Trekkregulator. Draft regulator.

Foreliggende oppfinnelse angår en trekkregulator av den art, som er innrettet til å tilsluttes en sideåpning i avtrekkspipen eller røkstussen fra et ildsted til pipen for å holde trekken i ildstedet konstant under vekslende vind- og værfor-hold. Virkningen av en sådan regulator er at det gjennom denne suges mere eller mindre tilleggsluft inn i pipen alt etter vind- og værforholdene således at trekken i ildstedet kan holde seg konstant. The present invention relates to a draft regulator of the kind which is designed to be connected to a side opening in the exhaust pipe or the flue from a hearth to the pipe in order to keep the draft in the hearth constant under changing wind and weather conditions. The effect of such a regulator is that more or less additional air is sucked into the pipe through it, depending on the wind and weather conditions, so that the draft in the fireplace can remain constant.

Ved kjente regulatorer av denne art benyttes et i forbindelse med et regulatorhus montert svingbart spjeld, som holdes i lukket stilling av en loddanordning og åpnes mere eller mindre under innflytelse av varierende trekk i pipen, hvorved det går en varierende luftmengde (tilleggsluft) gjennom regulatoren inn i pipen. Disse regulatorer er imidlertid ikke så følsomme for trekken i pipen som ønskelig, da de er utsatt for kun en gangs forbistrømning av den varierende luftstrøm. De er også van-skelige å innregulere etter de forskjellige forhold, da de må justeres ved hjelp av lodd før monteringen. Den tilsiktede kon-stantholdelse av trekken i ildstedet blir derfor ofte illusorisk. With known regulators of this type, a pivoting damper mounted in connection with a regulator housing is used, which is held in the closed position by a plumb line device and is opened more or less under the influence of varying drafts in the pipe, whereby a varying amount of air (additional air) passes through the regulator into in the pipe. However, these regulators are not as sensitive to the draft in the pipe as desired, as they are exposed to only one pass of the varying air flow. They are also difficult to adjust according to the different conditions, as they must be adjusted using a plumb bob before installation. The intentional constancy of the draft in the hearth therefore often becomes illusory.

Oppfinnelsen har til formål å tilveie-bringe en trekkregulator, som er særlig ømfintlig for variasjoner i trekken og som lett kan innstilles etter forholdene. The purpose of the invention is to provide a draft regulator, which is particularly sensitive to variations in draft and which can be easily adjusted according to the conditions.

Regulatoren er av den art, hvor spjeldet er et dobbeltspjeld, som er svingbart om en midtakse således at det er helt utbalansert, og som er montert således at dets ene halvdel i lukkestilling helt dekker regulatorhusets innløpsåpning, mens spjeldets annen halvdel raker inn i husets ut-løpskanal uten å stenge denne, og det ho-vedsakelig karakteristiske ved oppfinnelsen er at huset er således formet at den gjennom dette innsugede luft påvirker de to spjeldhalvdeler således at de derved oppståtte dreiemomenter virker i samme retning og forsterker hverandre med øket føl-somhet for variasjoner i trekken som følge. The regulator is of the type where the damper is a double damper, which can be pivoted about a central axis so that it is completely balanced, and which is mounted so that one half in the closed position completely covers the inlet opening of the regulator housing, while the other half of the damper rakes into the housing's outlet -running channel without closing this, and the main characteristic of the invention is that the housing is shaped in such a way that the air drawn in through this affects the two damper halves so that the resulting torques act in the same direction and reinforce each other with increased sensitivity to variations in the trait as a result.

Et annet karakteristisk trekk ved oppfinnelsen er at den med lodder forsynte snor, som ved loddenes vekt søker å holde spjeldet i lukket stilling, er festet på en hel, utbalansert snorskive, som er festet til den ut av regulatorhuset rakende del av spjeldets aksel. Another characteristic feature of the invention is that the cord provided with weights, which by the weight of the weights seeks to keep the damper in the closed position, is attached to a complete, balanced cord disc, which is attached to the part of the damper's shaft extending out of the regulator housing.

Oppfinnelsen er anskueliggjort på hos-stående skjematisk tegning, hvor The invention is illustrated in the accompanying schematic drawing, where

fig. 1 viser en utførelsesform av trekkregulatoren, mens fig. 1 shows an embodiment of the draft regulator, while

fig. 2 viser samme i perspektiv. Trekkregulatoren består av et hus 1, hvis øvre del danner en rett kanal 2, som er tilsluttet en sideåpning i en avtrekks-pipe over ildstedet. 3 betegner en festeflens for regulatoren. Husets øvrige del er krum-met 180° så at det dannes en krum kanal 4, som ender i en luftinnløpsåpning 5. Denne åpning vender til samme side som kanalens 2 utløpsåpning, således at den innstrøm-mende og utstrømmende luft har motsatt retning som antydet ved pilene. fig. 2 shows the same in perspective. The draft regulator consists of a housing 1, the upper part of which forms a straight channel 2, which is connected to a side opening in an exhaust pipe above the fireplace. 3 denotes a mounting flange for the regulator. The other part of the housing is curved 180° so that a curved channel 4 is formed, which ends in an air inlet opening 5. This opening faces the same side as the outlet opening of the channel 2, so that the inflowing and outflowing air has the opposite direction as indicated by the arrows.

I huset 1 er montert et om en midtakse svingbart dobbeltspjeld, som består av to like halvdeler 6 og 7 således at det er helt utbalansert. Spjeldets aksel 8 er lagret i husets sidevegger ved hjelp av kulelagre 9. Til den ut av huset rakende del av ak-selen 8 er festet en hel, utbalansert snorskive 14, på hvilken er festet en snor 11. til hvis nedre ende er festet et regulerbart lodd 12, som søker å holde spjeldet i lukket stilling. I denne stilling dekker spjeldets nedre del 6 innløpsåpningen 5, mens spjeldets øvre del 7 raker opp i kanalen 2 uten å stenge denne. In housing 1, a double damper pivotable about a central axis is mounted, which consists of two equal halves 6 and 7 so that it is completely balanced. The damper's shaft 8 is supported in the side walls of the housing by means of ball bearings 9. A complete, balanced sheave 14 is attached to the part of the shaft 8 extending out of the housing, on which is attached a cord 11. to the lower end of which is attached a adjustable plumb bob 12, which seeks to keep the damper in the closed position. In this position, the damper's lower part 6 covers the inlet opening 5, while the damper's upper part 7 rakes up into the channel 2 without closing it.

Når trekken i pipen og ildstedet blir for stor vil det oppstå en sugevirkning i regulatorhuset, hvorved spjeldets nedre halvdel vil svinge en viss vinkel innover i huset. Derved vil luft suges inn gjennom åpningen 5 og tilføres pipen som tilleggsluft, således at trekken i ildstedet avtar. Også spjeldets øvre del 7 har en viss regu-leringsvirkning, idet kanalens 2 gjennom-strømningstverrsnitt forandres under spjeldets svingning. Spjeldet blir i alminnelig-het stående å spille omkring en viss åp-ningsvinkel og holder derved trekken i ildstedet praktisk talt konstant. When the draft in the pipe and hearth becomes too great, a suction effect will occur in the regulator housing, whereby the lower half of the damper will swing a certain angle inwards into the housing. Thereby, air will be sucked in through the opening 5 and supplied to the pipe as additional air, so that the draft in the hearth decreases. The damper's upper part 7 also has a certain regulating effect, as the through-flow cross-section of the channel 2 changes during the swing of the damper. The damper is generally left to play around a certain opening angle and thereby keeps the draft in the hearth practically constant.

Ved den beskrevne trekkregulator vil luftstrømmen fra innløpsåpningen 5 gjennom kanalen 4, 2 passere spjeldhalvdelene 6 og 8 etter tur på en sådan måte at det på spjeldet som helhet utøves to dreiemomenter, som virker i samme retning og forsterker hverandre. Dette har tilfølge at regulatoren blir særlig følsom for trekkvaria-sjoner. Da ennvidere spjeldsystemet er helt utbalansert kan regulatoren lett justeres under drift ved endring av antallet av lod-dene 12. En fordel ved regulatoren er også at den kan monteres i en hvilken som helst vinkelstilling. With the draft regulator described, the air flow from the inlet opening 5 through the channel 4, 2 will pass the damper halves 6 and 8 in turn in such a way that two torques are exerted on the damper as a whole, which act in the same direction and reinforce each other. This has the consequence that the regulator becomes particularly sensitive to draft variations. Furthermore, since the damper system is completely balanced, the regulator can be easily adjusted during operation by changing the number of solders 12. An advantage of the regulator is also that it can be mounted in any angular position.

Claims

1. Draft regulator of the kind which is designed to be connected to a side opening in the exhaust pipe or the flue from a fireplace to the pipe in order to keep the draft in the fireplace constant, consisting of a pivoting damper mounted in connection with a regulator housing, which is held in the closed position by a plumb device and is opened more or less by varying air flow through the regulator, which damper is a double damper, which can be pivoted about a central axis so that it is completely balanced, and which is mounted so that one half in the closed position completely covers the inlet opening of the regulator housing, while the other half of the damper extends into the housing's outlet channel without closing it, characterized by the housing being shaped in such a way that the air drawn in through this affects the two damper halves in such a way that the resulting torques act in the same direction and reinforce each other with increased sensitivity to variations in the trait as a result.

2. Traction regulator according to claim 1, characterized in that the cord provided with weights, which, due to the weight of the weights, tries to keep the damper in the closed position, is attached to a complete, balanced cord disc, which is mounted on the part of the damper protruding from the regulator housing axle.