HUE035002T2

HUE035002T2 - A drive unit for a feeder supplying a combustion chamber of a pellet burner

Info

Publication number: HUE035002T2
Application number: HUE15460093A
Authority: HU
Inventors: Michal Brzeski
Original assignee: Pellasx Spolka Z O O Spolka Komandytowa
Priority date: 2014-10-07
Filing date: 2015-10-07
Publication date: 2018-05-02
Also published as: PT3006829T; ES2643418T3; EP3006829A1; DK3006829T3; LT3006829T; PL409725A1; SI3006829T1; EP3006829B1; PL226707B1

Abstract

A drive unit of a worm feeder supplying the combustion chamber of a pellet burner, being the subject of the invention, relates to a burner comprising a steel body, which is a fixed housing with an inlet hole for pellets and a rotary combustion chamber, equipped with a multipoint blow-in of air throughout holes and/or nozzles, to which pellets are being dosed by the worm feeder. According to the invention the drive unit has a centrifugal fan with an internal motor and a mounting plate (6) of the housing, whereas the centrifugal fan (1) and its motor (2) are connected throughout a centring sleeve to a/the reduction gear (7).

Description

Description [0001] The subject of the invention is a drive unit for a worm conveyor supplying the combustion chamber of a burner designed for burning pellets which can be used both in households and other communal facilities buildings and store or production rooms.

[0002] There are known burners designed for burning pellets which are equipped with a worm feedersupplying the combustion chamberof a burnerwith a dosed amount of fuel in a form of granular pellets. The feeder is driven by a motor and a reduction gear such that each of these devices is a separate element of the drive. In addition, there is a fan located in the burner housing, or outside it, which blows in into the combustion chamber a flow of air necessary for performing the combustion process. The fan is driven by a separate motor.

[0003] Patent description no. US 2324042 A discloses a drive mechanism of the worm conveyor (71) for feeding a pellet burner combustion chamber, shown in drawings marked as Pos. I and Pos. II. The mechanism comprises an electric motor (41), reduction gear (75, 76), radial fan (57) with an external motor (41) and a mounting plate on the housing (48), whereas the radial fan (57) and the electric motor (41) are permanently attached to the reduction gear (75, 76) via centring sleeve (52). Said document discloses the preamble of claim 1. A drive unit of the feeder supplying a pellet burner relates to a burner comprising a steel body which is a fixed housing with an inlet hole for pellets, and a worm feeder driven by a drive unit, dosing pellets supplied to the combustion chamber, which is provided with a multipoint blow-in of air throughout holes and/or nozzles. The object of the invention is solved by a drive unit according to claim 1. In the solution according to the invention, there is a fan used for driving a worm feeder supplying the combustion chamber of a burner, comprising a housing, a motorsituated inside the housing, and a rotorwith blades directed outwards, which elements, all together, form one monolith unit. The radial fan is connected with a reduction gear by a special shaft ended with a rack, adapted for transmitting drive from the fan’s motor to the reduction gear where from - by the use of the driving shaft - the drive is transmitted to the worm conveyor’shaft delivering pellets to the combustion chamber.

[0004] In accordance with the invention, there is a construction element placed between the radial fan and the reduction gear in a form of a centring sleeve having an outer flange, in addition, the outer flange is fixed to a mounting plate from one side and it is tightly fitting with a seat of the reduction gearfrom the otherside, whereas a cylinder segment of the centring sleeve passes through a hole of the monting plate and it is slidably and tightly fitted with a centrifugal fan’s hole.

[0005] Thanks to the solution according to the invention, a simple design solution has been developed, improving the drive of the feedersupplying the pellets burner, in a form of one compact unit of small dimensions, which allows the drive’s assembling space to be significantly limited at the evident reduction of the installing costs.

[0006] The subject of the invention is shown in an exemplary embodiment in a schematic drawing, Fig. 1 of which shows a perspective view of the drive unit of the feeder supplying the pellet burner; Fig. 2 - shows a perspective view of the reassembled details of the drive unit; Fig. 3 - shows a side view of the drive unit, and Fig. 4 -a rear view of the drive unit.

[0007] The drive unit for the feeder according to the invention, supplying the pellet burner, has been used in a pellet burner comprising a steel body (not shown in the drawing), being a fixed housing with an inlet hole for pellets and a rotary combustion chamber (also not shown in the drawing) equipped with a multipoint blow-in of air throughout holes and/or nozzles, to which doses of pellet are being delivered by a worm feeder (not shown in the drawing).

[0008] To drive the worm feeder supplying the combustion chamber of the pellet burner a centrifugal fan 1 has been used, comprising a housing not shown in the drawing, a motor 2 located inside the housing, an outer rotor 3 of a motor has blades 4 arranged on its outer circumference, and a stator 5 located inside the housing. These elements all together form one monolith unit. A rearwall of the fan’s 1 housing is formed by an mounting plate 6, adapted properly to the shape of housing. [0009] The motor 2 of the centrifugal fan 1 is connected with a reduction gear 7 by a special shaft ended with a rack (not shown in the drawing), adapted for transmitting drive from the fan’s 1 motor 2 to the reduction gear 7, where from - by using a driving shaft 8 - a torque is transmitted to the shaft of the worm feeder (not shown in the drawing) supplying pellets to the combustion chamber (also not shown in the drawing).

[0010] There is a construction element placed between the centrifugal fan 1 and the reduction gear 7 in a form of centring sleeve 9a having an outer flange 9b. The outer flange 9b is removably mounted to the mounting plate 6 using bolts 10 from one side, and it is tightly fitted with a seat 11 of the reduction gear 7 from the other one, whereas a cylinder segment of the centring sleeve 9a passes throughout a hole of the mounting plate6, and itisslidably and tightly fitted with a hole of the fan 1.

[0011] The shape of the mounting plate 6 is almost a circle-like, however this circle has an irregular contour on the length equal almost 1A of its circumference. This shape is adapted properly to the one of the fan’s housing 1 (not shown in the drawing), which looks like a shell.

List of labels [0012] 1 - centrifugal (radial) fan 2 - motor 3 - outer rotor of the motor 4 - fan’s blade 5 - motor’s stator 6 - mounting plate 7 - reduction gear (transmission) 8 - driving shaft 9a - centring sleeve 9b - centring sleeve flange 10 -bolt 11 - reduction gear’s seat

Claims 1. A drive unit for a worm conveyor supplying a combustion chamber of a pellet burner, comprising an electric motor (2), a reduction gear (7), a radial fan (1), a housing and a mounting plate (6) which has a shape adapted to the shape of the housing, wherein the radial fan (1) and the electric motor (2) are connected with the reduction gear (7) via a centring sleeve (9a), characterised in that said radial fan (2) com prises an outer rotor (3) with blades (4) arranged on its outer circumference and a stator (5) located inside the rotor (3), and wherein the centring sleeve (9a) has a flange (9b) removably mounted to the mounting plate (6) from one side, and tightly fitted with a seat (11) of the reduction gear (7) from the other side.

Patentansprüche 1. Die Antriebseinheit für den Schneckenförderer zur Versorgung der Brennkammer eines Pelletbrenners, die einen Elektromotor (2), ein Reduktionsgetriebe (7), einen Radiallüfter (1), ein Gehäuse und eine Montageplatte (6) mit einer an die Gehäuseform angepassten Form umfasst, der Radiallüfter (1) und der Elektromotor (2) mit Hilfe einer Zentrierhülse (9a) mit dem Getriebe (7) verbunden sind, dadurch gekennzeichnet, daß der Radiallüfter (1) einen externen Rotor(3) mit Paddeln (4) die an seinem äußeren Umfang verteilt sind und einen Stator (5), der sich innerhalb des Rotors (3) befindet, enthält, wobei die Zentrierhülse (9a) mit einem Flansch (9b) versehen ist, der trennbar an der Montageplatte (6) einerseits und fest am Sitz (11) des Reduktionsgetriebes (7) andererseits befestigt ist.

Revendications 1. Une unité d’alimentation propulsion vis de la chambre de combustion des pellets de brûleur, comprenant un moteur électrique (2), un engrenage de réduction (7), le ventilateur radial (1), un boîtier et la plaque de montage (6) qui présente une forme adaptée à la forme du boîtier, dans lequel le ventilateur radial (2) et le moteur électrique (1) étant reliée à un engrenage de réduction (7) par l’intermédiaire d’un centrage manchon (9a), caractérisé en ce que ledit ventilateur radial (2) comprend un rotor extérieur (3) avec des ailettes (4) disposées sur sa périphérie extérieure, et un stator (5) disposé à l’intérieur du rotor (3) et la douille de centrage (9a) présente une bride (9b) montéedefaçon amoviblesurla plaquede montage (6) sur un côté et étroitement ajustée dans un siège (11) du réducteur (7) d’autre part.

REFERENCES CITED IN THE DESCRIPTION

This list of references cited by the applicant is for the reader’s convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description • US 2324042 A [0003]

Claims

MEGHAJTÓ EGYSêG ADAGOLÓHOZ, AMELY EGY PELLETÉGETÖ éGÊSTERÊHEZ SZOLGÁLTAT SZABADALMI IGÉNYPONTOK 1 Meghajtó egység (őrivé unit} egy s?.á?iHóc$lgához (warm conveyor). ahoi as egy ptoieiégsfo (peilet berner) égésidéhez (oonrhestfon Chamber- szolgaitok ame;y egység rastalíhaz agy etosiromos merer; (2). egy toes-fo fogaskereke! trebuchon gear) {?), egy cenirifogal· ventilátort (radia; fon; {11, agy Porkofotot (bou&ngl és egy szarelvénylapot imoehlirrg plate) (81, ahoi ennek olyan alakja van, amely s barkóiéi alak;á);oz van abanlálva, ahol a cenlritogál-venriláfor (!) és az eloktromoa motorDRIVER FOR A UNIT SUPPLIER WHICH IS A PELLETS FOR A PERSONAL STORAGE PATIENT LANDSCAPE 1 Drive unit (guard unit) for a warm conveyor. rakalíhaz brain etosiromos merer; (2) one toes-gear cog! trebuchon gear) {?), a cenirifogal · fan (radia; fon; {11, brain pofof (bou & ngl and a bulletin board imoehlirrg plate) (81, ahoi it has a shape that is a shape of a person; á) oz is where the cenlritogal veneeril (!) and the elo-tromoa motor

(2) Össze vsa kapcsolva a foss;tó fogaskerékkel (7) W központosító persely (centring sfeeve) (Sál étiére azzsl jeöéhSWé»: hegy az említett eentofogákveptliófor (11 tartalmaz égy ifolsb sofort (3) lapátokkal (blade) (4) sónak külső kerülőién eirsffoszve, és tartalasaz egy áiforészí (staior) (5) a rotoron (3) belül, es ehe! a központosító perselynek {Sal ven egy pereme (Hangé) (Sb) sltávoiíihatoas·! foiszaraivg e sZéréivényiaphoz (8) az egyik oioairők és szomsan vers llfotfotve (fit) a lassító fogaskerék (71 Isszkéves (seat) foi) a rnáskc oldatró;(2) Combined with foss; lake with gear (7) W centering bush (centring sfeeve) (mountain is referred to as eentophogic septum) (11 contains four ifolsb (3) blades (blade) (4) salt external and a steaor (5) inside the rotor (3), and the centering sleeve {Sal ven is a flange (Sound) (Sb) sltávoiíihatoas ·! soman versus llfotfotve (fit) the slowing gear (71 slack);