WO2016056930A2 - The unit for supplying air to the combustion chamber of a pellet burner - Google Patents

The unit for supplying air to the combustion chamber of a pellet burner Download PDF

Info

Publication number
WO2016056930A2
WO2016056930A2 PCT/PL2015/000162 PL2015000162W WO2016056930A2 WO 2016056930 A2 WO2016056930 A2 WO 2016056930A2 PL 2015000162 W PL2015000162 W PL 2015000162W WO 2016056930 A2 WO2016056930 A2 WO 2016056930A2
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
combustion chamber
housing
burner
pellets
Prior art date
Application number
PCT/PL2015/000162
Other languages
French (fr)
Other versions
WO2016056930A3 (en
Inventor
Michał BRZESKI
Original Assignee
Pellasx Spółka Z O.O. Spółka Komandytowa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to PLW.123434 priority Critical
Priority to PL123434U priority patent/PL69009Y1/en
Application filed by Pellasx Spółka Z O.O. Spółka Komandytowa filed Critical Pellasx Spółka Z O.O. Spółka Komandytowa
Publication of WO2016056930A2 publication Critical patent/WO2016056930A2/en
Publication of WO2016056930A3 publication Critical patent/WO2016056930A3/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B40/00Combustion apparatus with driven means for feeding fuel into the combustion chamber
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B1/00Combustion apparatus using only lump fuel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B30/00Combustion apparatus with driven means for agitating the burning fuel; Combustion apparatus with driven means for advancing the burning fuel through the combustion chamber
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B5/00Combustion apparatus with arrangements for burning uncombusted material from primary combustion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B7/00Combustion techniques; Other solid-fuel combustion apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/10Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/10Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses
    • F23G7/105Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses of wood waste
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00Passages or apertures for delivering primary air for combustion 

Abstract

The subject of the utility model is an unit for supplying air to the combustion chamber of a pellet burner having a housing with a delivery pipe of pellets and a rotary chamber, in addition, inside the housing there are a motor driving a shaft of a worm feeder of pellets and a fan, and a part of the burner housing is a blow-in chamber. The essence of a solution according to the utility model is a ring-shaped slot (14), which is an inlet of air from the blow- in chamber (7) to an axial part of the chamber (2), created between a contraction (9) on the outlet of a pipe of the worm feeder (5) and an inlet (10) of a reducer (11), an outlet (12) of which is fitted in a rear wall (13) of the combustion chamber (2).

Description

The unit for supplying air to the combustion chamber
of a pellet burner
The subject of the utility model is an unit for supplying air to the combustion chamber of a pellet burner. The pellet burner can be used both in households and other buildings - starting on hotels, throughout bakeries, pizza restaurants communal facilities such as, for example hospitals, nursery schools, high schools, banks, cinemas, malls, to greenhouses, poly-tunnels, grain and crop dryers and store or production rooms.
There are known the heating stoves for burning biomass, especially the very popular ones with a hearth for burning straw formed into bales, and the burners for burning biomass in a form of pellets. The pellets (pellet - ball, tablet, granule, pill, in English) are becoming more and more popular, renewable, ecological, solid fuels in granular form created by the high press machines from the after-production wood waste, i.e. wood biomass: sawdust, wood shavings, bark of deciduous tree wood with a low resin content, and from the agricultural production waste, so-called agropellets, especially coming from the process-waste, such as stones, husk, cereal, stems and hay of green biomass. Both pellets and agropellets are made in granular form, shaped in balls or, more often, in cylinders of 6-25 mm in diameter, and of up to several centimetres length. The pellets are fully ecological, produced entirely from natural materials, with no additives i.e. without any adhesive substances, bound by natural organic compounds only, i.e. lignins present in cellular structures of plant. They are a kind of briquette and have excellent energetic values - their calorific value can be compared to the ones for wood (the pellets caloric value fluctuates in a range from 18 to 20 MJ/kg), and they are characterised by low humidity values (4,3 - 10%). Furthermore, the specific pellet's feature is a lack of the noxious gas emissions during combustion processes (smoke coming out chimney smells like wood being burnt), and a small amount of ash residuals (up to 1%), which additionally can be used as an excellent ecological fertilizer. For that reason this kind of fuel is called as "green coal" or "green energy". As a matter of fact, agropellets have energetic properties slightly worse (caloric values fluctuate in a range from about 15 to 18 MJ/kg, and ash content (after burning) is of 5%), but they are cheaper.
Pellets and agropellets are much appreciated for their high comfort of use, and therefore they are successfully applied as a very effective fuel for the individual boilers of central heating systems, stoves, fireplaces, and other heating devices designed for heating buildings and rooms, and equipped with a container for pellets, a dosing device for pellets and a feeding device. The burners designed for burning pellets, made of heat- resistant, acid-resistant, and stainless materials, are mounted in the doors of heating boilers of any type, i.e. the oil-, gas-, or solid fuel ones.
There is known a pellet burner which is an automatic device, having a fire grate with a built-in heating element, which starts the burner operation. A warm (screw?)feeder (conveyor) supplies a small amount of fuel to activate the burner. During this activation process a cycle of preheating fuel and igniting (firing up) the created seeds of flames by the precisely operating fan occurs. This burner is equipped with an electronic control module. This module, having analyzed a signal coming from a photocell built in the burner body, starts a process of dosing air, in order to ignite (fire up) a charge of pellets placed on the burner fire grate. Having ignited the first portion of pellets and having reanalyzed the photocell signal, the control module starts precise dosing a fuel and air mixture in order to get a continuous (steady?) process of degassing fuel. The automatics of the burner keeps on the optimal composition of the fuel and air mixture by analyzing the photocell signals and controlling pressure values in the combustion chamber.
There is known a pellet burner disclosed in the European Patent Application no. EP 1359372 Bl, shown in the drawing Pos. la, Pos. lb. The burner comprises a main body (1) and a combustion chamber (2), in which there is a flow of combustion gases moving basically along the (F) direction. Inside the combustion chamber (2) there is a grate (3) bent back in relation to the (F) direction of flow of combustion gases and having a concave cross section. There are some inflating (blowing-in?) nozzles (16) located on the grate's surface for blowing up air using holes (17) situated on their side surfaces. Means of supplying air include at least: one hole for primary air adapted for supplying air to said nozzles (16) throughout a duct (9) below the grate (3); the primary air holes above the lower part of the grate (3) and at least one secondary air duct (12) for blowing-in air in a basically axial zone of the combustion chamber (2).
In all solutions known up to now there are burners designed for burning pellets that operate on a fixed-body principle, with a fixed or rotary combustion chamber, with a multi-point blow-in of air, in addition, the air is supplied to the hearth throughout the holes and/ or the nozzles located in some different places behind and around the combustion chamber. The disadvantage of these solutions consists largely in a lack of any effective control on the amount of air supplied to the combustion chamber, and such inability of controlling it results in the over- oxidation or under- oxidation of the burner.
The aim of the utility model was to develop such aeration mechanism of the combustion chamber in the burner designed for burning pellets and agropellets which would allow even higher effectivity of using the applied fuels to be obtained. An unit for supplying air to the combustion chamber of a pellet burner according to the utility model concerns the burner having a housing with a pellet delivery pipe and a combustion chamber, in addition, there are a motor for driving a shaft of a worm feeder (conveyor) of pellets and a fan placed inside the housing, and a part of housing is a blow-in chamber. According to the utility model the essence of the solution is a ring-shaped slot used as an inlet of air from the blow-in chamber to the axial part of the combustion chamber. The slot is formed between a contraction of the worm feeder (conveyor) pipe outlet and a reducer inlet, an outlet of which is fitted in a rear wall of the combustion chamber.
Owing to the solution according to the utility model an ability of a continuous adjustment of the rotary combustion chamber aeration has been obtained, that allows for supplying a precisely matched amount of air to the inside of the chamber to get the optimum aeration of the hearth and to maintain the optimum composition of a fuel and air mixture during all phases of combustion - starting from igniting the fire throughout all stages of maintaining the fire after reaching the preset temperature of combustion, up to the fire suppression.
The subject of the utility model is show in the schematic drawing, Fig. 1 of which shows a side view of the pellet burner; Fig. 2 - shows a longitudinal section of a detail of the air supply unit to the burner combustion chamber.
An unit for supplying air to the combustion chamber of a pellet burner according to the utility model has been applied in the pellet burner having a steel body, which is a fixed housing (1) and a rotary chamber 2, permanently connected with the housing 1. Inside the housing there are a motor 3 mounted for driving a shaft 4 of a worm feeder (conveyor) 5 and a fan 6. A part of the burner housing is a blow-in chamber 7. The worm feeder (conveyor) 5 is connected with a pellet delivery pipe 8, by which pellets are gravitationally discharge from a container which is not shown in the drawing. The pipe of the worm feeder 5 has a contraction 9 on its outlet, which is fitted in an inlet 10 of a reducer 11, an outlet 12 of which is centrally fitted in a rear wall 13 of the combustion chamber 2. A ring- shaped slot 14 is an inlet of air to an axial part of the combustion chamber 2. The shaft 4 of the worm conveyor 5 is directed to the inside of the combustion chamber 2 and ended with a poker 15.
The fan 6, which delivers air necessary for burning pellets forces air under pressure into the blow-in chamber 7. An overpressure effect occurs in the chamber as a result of which the accumulated in the chamber is flowing out throughout a ring- shaped slot 14 to the inside of the combustion chamber 2. Owing such a solution the air cannot be moved back to the blow-in chamber 7, nor to the delivery pipe 8 with the pellet fuel.

Claims

Claim
An unit for supplying air to the combustion chamber of a pellet burner having a housing with a delivery pipe of pellets and a rotary chamber, in addition, inside the housing there are a motor driving a shaft of a worm feeder of pellets and a fan, and a part of the burner housing is a blow-in chamber, characterized in that it has a ring-shaped slot (14), which is an inlet of air to an axial part of the chamber (2), created between a contraction (9) on the outlet of a pipe of the worm feeder (5) and an inlet (10) of a reducer (11), an outlet (12) of which is fitted in a rear wall (13) of the combustion chamber (2).
Abstract
The subject of the utility model is an unit for supplying air to the combustion chamber of a pellet burner having a housing with a delivery pipe of pellets and a rotary chamber, in addition, inside the housing there are a motor driving a shaft of a worm feeder of pellets and a fan, and a part of the burner housing is a blow-in chamber. The essence of a solution according to the utility model is a ring-shaped slot (14), which is an inlet of air from the blow- in chamber (7) to an axial part of the chamber (2), created between a contraction (9) on the outlet of a pipe of the worm feeder (5) and an inlet (10) of a reducer (11), an outlet (12) of which is fitted in a rear wall (13) of the combustion chamber (2).
Fig. 1 1 claim
List of labels - burner housing
- combustion chamber
- motor
- worm feeder shaft
- worm feeder
- fan
- blow-in chamber
- delivery pipe
- worm feeder pipe outlet
- reducer inlet
- reducer
- reducer outlet
- rear wall of the combustion chamber - slot
- poker
PCT/PL2015/000162 2014-10-08 2015-10-08 The unit for supplying air to the combustion chamber of a pellet burner WO2016056930A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PLW.123434 2014-10-08
PL123434U PL69009Y1 (en) 2014-10-08 2014-10-08 Unit supplying air to the pellet burner combustion chamber

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
ES201790004U ES1186208Y (en) 2014-10-08 2015-10-08 UNIT TO SUPPLY AIR TO THE COMBUSTION CHAMBER OF A PELLET BURNER
LTEP15798578.9T LT3262345T (en) 2014-10-08 2015-10-08 Unit for supplying air to the combustion chamber of a pellet burner
DE212015000243.8U DE212015000243U1 (en) 2014-10-08 2015-10-08 Air supply unit to the combustion chamber of a pellet burner
ES15798578T ES2743483T3 (en) 2014-10-08 2015-10-08 Air supply unit to the combustion chamber of a pellet burner
HUU1700088U HU1700088V0 (en) 2014-10-08 2015-10-08 Unit for supplying air to the combustion chamber of a pellet burner
EP15798578.9A EP3262345B1 (en) 2014-10-08 2015-10-08 Unit for supplying air to the combustion chamber of a pellet burner
DKPA201770320A DK179937B1 (en) 2014-10-08 2015-10-08 The unit for supplying air to the combustion chamber of a pellet burner
FI20175407A FI20175407A (en) 2014-10-08 2017-05-08 Unit for supplying air to the combustion chamber of a pellet burner

Publications (2)

Publication Number Publication Date
WO2016056930A2 true WO2016056930A2 (en) 2016-04-14
WO2016056930A3 WO2016056930A3 (en) 2016-07-07

Family

ID=55646183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2015/000162 WO2016056930A2 (en) 2014-10-08 2015-10-08 The unit for supplying air to the combustion chamber of a pellet burner

Country Status (9)

Country Link
EP (1) EP3262345B1 (en)
DE (1) DE212015000243U1 (en)
DK (1) DK179937B1 (en)
ES (2) ES1186208Y (en)
FI (1) FI20175407A (en)
HU (1) HU1700088V0 (en)
LT (1) LT3262345T (en)
PL (1) PL69009Y1 (en)
WO (1) WO2016056930A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110975472A (en) * 2019-12-31 2020-04-10 魏然 Industrial combined type efficient wet dust collector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1359372B1 (en) 2002-04-09 2008-03-26 Termocabi S.r.l. A burner for pellet fuel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT386268B (en) * 1981-04-10 1988-07-25 Trunkenpolz Maschinen DEVICE FOR BURNING STRAW, WOOD SHAVINGS AND THE LIKE
SE508546C2 (en) * 1997-01-21 1998-10-12 J Tec Burner for solid fuels and ways of regulating the supply of combustion air to a burner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1359372B1 (en) 2002-04-09 2008-03-26 Termocabi S.r.l. A burner for pellet fuel

Also Published As

Publication number Publication date
ES1186208Y (en) 2017-09-18
EP3262345B1 (en) 2019-05-01
WO2016056930A3 (en) 2016-07-07
FI20175407A (en) 2017-05-08
PL69009Y1 (en) 2017-04-28
LT3262345T (en) 2019-08-26
ES1186208U (en) 2017-06-27
DE212015000243U1 (en) 2017-05-22
PL123434U1 (en) 2016-04-11
ES2743483T3 (en) 2020-02-19
HU1700088V0 (en) 2017-07-28
DK179937B1 (en) 2019-10-14
EP3262345A2 (en) 2018-01-03

Similar Documents

Publication Publication Date Title
US5144939A (en) Biomass pellet-burning orchard heaters
US4213404A (en) Solid refuse furnace
US4385567A (en) Solid fuel conversion system
US7954438B2 (en) Wood fired boiler
US5678494A (en) Biomass-fueled furnace
CA1137844A (en) Chip wood furnace and furnace retrofitting system
JP4588628B2 (en) Biomass fuel water heater
WO1998048219A1 (en) Solid fuel burner for a heating apparatus
CN201237348Y (en) Feeding type stalk direct combustion stove
US20090293860A1 (en) Systems and methods relating to fireplaces comprising modular feed and combustion systems for biomass solid particulate fuels
CN106594713B (en) A kind of biomass cascade conversion burner of Anti-slagging
CN103542415A (en) Smoke pyrolysis kiln-furnace-combined type sludge incinerator
US9097421B2 (en) Enclosed granular fuel burning boiler
US20060236906A1 (en) Waste litter heater
US20160238238A1 (en) Combustion Chamber for Burning Solid Fuels
RU132530U1 (en) Long burning solid fuel boiler
AU2011201584B2 (en) A solid fuel unit having the feature of burning solid fuels together with their volatile gases
CN104188556B (en) A kind of biomass-burning intelligence oven
CN101196296A (en) Method and apparatus for biomass ebullition, gasification and combustion
JP2012197952A (en) Hearth structure, and combustion furnace
US20130269678A1 (en) Anti-Scorification Oven
WO2010019877A3 (en) Biomass fuel furnace system and related methods
KR20130037712A (en) Biomass energy burner
CN201145305Y (en) Biomass boiling gasification combustion apparatus
US8322331B2 (en) Burner for combustion of fuel in pellet or granular form

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: U201790004

Country of ref document: ES

WWE Wipo information: entry into national phase

Ref document number: 212015000243

Country of ref document: DE

REEP Request for entry into the european phase

Ref document number: 2015798578

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: HUU1700088

Country of ref document: HU

WWE Wipo information: entry into national phase

Ref document number: U20174129

Country of ref document: FI

Ref document number: 20175407

Country of ref document: FI

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15798578

Country of ref document: EP

Kind code of ref document: A2