WO2016137345A1 - Device for supplying air and fuel to a pellet burner - Google Patents

Device for supplying air and fuel to a pellet burner Download PDF

Info

Publication number
WO2016137345A1
WO2016137345A1 PCT/PL2016/000012 PL2016000012W WO2016137345A1 WO 2016137345 A1 WO2016137345 A1 WO 2016137345A1 PL 2016000012 W PL2016000012 W PL 2016000012W WO 2016137345 A1 WO2016137345 A1 WO 2016137345A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
fuel
transmission
burner
pellets
Prior art date
Application number
PCT/PL2016/000012
Other languages
French (fr)
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
Application filed by Pellasx Spółka Z.O.O Spółka Komandytowa filed Critical Pellasx Spółka Z.O.O Spółka Komandytowa
Priority to DKPA201770705A priority Critical patent/DK179899B1/en
Priority to DE212016000053.5U priority patent/DE212016000053U1/en
Publication of WO2016137345A1 publication Critical patent/WO2016137345A1/en
Priority to FI20175834A priority patent/FI20175834A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING 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
    • F23L5/00—Blast-producing apparatus before the fire
    • F23L5/02—Arrangements of fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/10—Under-feed arrangements
    • F23K3/14—Under-feed arrangements feeding by screw
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00—Feeding arrangements
    • F23K2203/20—Feeding/conveying devices
    • F23K2203/202—Feeding/conveying devices using screws

Definitions

  • the subject of the utility model is a device for supplying air and fuel to a pellet burner, being one of the parts of the burner, designed for burning any ecological renewable fuel of any form - supplied in a form of bulk materials, delivered in a form of granulated product, milling or powders (for example, pellets made of strew, waste wood such as sawdust, wood shavings, chips, bark, and agropellets - made of stones, husk, cereal, stems and hay of green biomass).
  • This device performs two functions - it delivers air into a blow-in chamber of the burner and it also transmits power to a worm feeder delivering fuel to the burner's combustion chamber.
  • centrifugal fans commonly known, a task of which is forcing through a great amount of pressurised air, scattered by blades of a rotor, and directed to the outlet. They can be used in a variety of applications, the ones for heating, ventilating and air-conditioning systems including.
  • the device consists of a housing, a motor and blades of a fan and it is characterised in that the motor (2) is situated inside the housing (1) and is permanently connected with it throughout its axis (3), in addition, the motor (2) is made of materials resistant to high temperatures, whereas the fan's blades (5) are set on a rotating stator (2) of the motor. The air heated up during a combustion process is sucked in throughout an inlet hole (4) to the inside of the fan housing ( 1).
  • the fan can be equipped with a control and safety system (7), which adjusts revolutions of the motor to parameters of air flowing throughout the distribution duct.
  • the ecological boilers and burners of different types, designed for burning pellets, based on different design solutions are well known and are becoming more and more popular, however, in each case they are equipped with a burner body with a combustion chamber, a worm feeder dosing biomass delivered in a form of pellets, an inlet hole for pellets, and a fan delivering air for burning and, alternatively, the other systems of aeration in a form of nozzles, for example.
  • These devices take in fuel from containers throughout special feeders adapted for transporting pellets and delivering them to the combustion chamber of the burner.
  • All known feeders are comprised of a body equipped with a drive, a rigid or, in option, a flexible transportation pipe, which can be slightly bent in all directions and is provided with a steel worm spiral operating inside this pipe. Owing to such systems it is possible to supply the pellet burner with a fuel delivered from distant storage places, for example, in situations when pellets or biomass are stored in a central container situated at the same site as the boiler-room however, in a certain distance from the stove, or they are located inside the same building but in a completely different storeroom made of metal or other materials, or in a large, underground fuel tank, or in any container, barrel, a box etc. for example, or pellets can be stored in a grain silo, for instance, situated outside in a remote even to 60 m from the stove.
  • retort pellets burners offered by the various manufacturers, to which fuel is supplied from an outer tank using a feeder provided in a form of a flexible pipe. Pellets are poured throughout a controlled lock into an inner store container located at the very burner. The maximum filling level is set by a state sensor. Further transportation of pellets - already within the burner - is performed using a spiral, worm feeder, and the fuel is delivered to the burner from its bottom side. The pellets are transported to the rotary combustion chamber, the so-called retort, situated above the feeder, and they are completely burnt in it. The rotation of the retort helps to move ash away and improves the burning conditions. Falling out of the unburned pellets of the combustion chamber is not possible.
  • the burner is equipped with a special ring which is to fulfil two tasks - to remove ash from the hearth and to move a grate so as to get an uniform distribution of glow over the entire hearth ⁇ of the burner).
  • the device for supplying air and fuel to a pellet burner is comprised of a centrifugal fan, the motor of which is located inside a blade ring of the fan's rotor.
  • the fan is equipped with a shaft with a notched rack, which meshes with a transmission mechanism, and the transmission is aligned with the fan by means of a centring sleeve.
  • Fig. 1 shows an exploded perspective view from the top of the device delivering fuel and air to the pellet burner;
  • Fig 2 shows as side view of the device; and
  • Fig. 3 - shows a side view of the centrifugal fan.
  • the device presented in the drawing is one of the elements of the pellet burner and it is comprised of a centrifugal fan 1, having a rotor 2 with a blade-ring 3 and it is equipped with a shaft 4 with a notched rack, in addition, the shaft 4, while passing throughout a mounting plate 5, meshes with a transmission mechanism 6.
  • the transmission 6 is aligned with the fan by means of the centring sleeve 7, whereas, on the other side there is a feeder 10, which is attached using a press bolt 9 to the shaft 8 of the transmission 6, and it is formed in a steel worm spiral for transporting pellets and delivering fuel to the burner combustion chamber.
  • the feeder 10 is ended with an additional, triangular, mixing element 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Solid-Fuel Combustion (AREA)
  • Screw Conveyors (AREA)

Abstract

The subject of the utility model is the a device for supplying fuel and air to the pellet burner, comprising a centrifugal fan, a drive motor of which is located inside a blade-ring of the fan's rotor. The device is characterised in that a fan (1) has a shaft with a notched rack, which meshes with a transmission (6) mechanism, in addition, the transmission (6) is aligned with the fan by means of a centring sleeve (7), whereas a feeder (10) formed in a steel worm spiral is attached to the shaft (8) of the transmission (6), and it is advantageously ended with a mixing element (11).

Description

DEVICE FOR SUPPLYING AIR AND FUEL TO A PELLET BURNER
The subject of the utility model is a device for supplying air and fuel to a pellet burner, being one of the parts of the burner, designed for burning any ecological renewable fuel of any form - supplied in a form of bulk materials, delivered in a form of granulated product, milling or powders (for example, pellets made of strew, waste wood such as sawdust, wood shavings, chips, bark, and agropellets - made of stones, husk, cereal, stems and hay of green biomass). This device performs two functions - it delivers air into a blow-in chamber of the burner and it also transmits power to a worm feeder delivering fuel to the burner's combustion chamber.
There are centrifugal fans commonly known, a task of which is forcing through a great amount of pressurised air, scattered by blades of a rotor, and directed to the outlet. They can be used in a variety of applications, the ones for heating, ventilating and air-conditioning systems including.
There is known a fan described in the Polish utility model Ru. 061624 (Yl) as the one designed especially for fireplaces, shown in an exemplary embodiment in the drawing Pos. I., improving a process of effective distribution of heat produced in the fireplace hearth. The device consists of a housing, a motor and blades of a fan and it is characterised in that the motor (2) is situated inside the housing (1) and is permanently connected with it throughout its axis (3), in addition, the motor (2) is made of materials resistant to high temperatures, whereas the fan's blades (5) are set on a rotating stator (2) of the motor. The air heated up during a combustion process is sucked in throughout an inlet hole (4) to the inside of the fan housing ( 1). Next, it is abruptly pushed out throughout an outlet hole (6) by means of blades (5) set on the rotating stator of the motor (2), and directed to a duct distributing warm air to the other rooms. Moreover, the fan can be equipped with a control and safety system (7), which adjusts revolutions of the motor to parameters of air flowing throughout the distribution duct.
The ecological boilers and burners of different types, designed for burning pellets, based on different design solutions are well known and are becoming more and more popular, however, in each case they are equipped with a burner body with a combustion chamber, a worm feeder dosing biomass delivered in a form of pellets, an inlet hole for pellets, and a fan delivering air for burning and, alternatively, the other systems of aeration in a form of nozzles, for example. These devices take in fuel from containers throughout special feeders adapted for transporting pellets and delivering them to the combustion chamber of the burner. There are three different systems of delivering pellets: i.e. the mechanical, gravitational, and pneumatic ones. A mutual combination of these different ways of delivering is often used. All known feeders are comprised of a body equipped with a drive, a rigid or, in option, a flexible transportation pipe, which can be slightly bent in all directions and is provided with a steel worm spiral operating inside this pipe. Owing to such systems it is possible to supply the pellet burner with a fuel delivered from distant storage places, for example, in situations when pellets or biomass are stored in a central container situated at the same site as the boiler-room however, in a certain distance from the stove, or they are located inside the same building but in a completely different storeroom made of metal or other materials, or in a large, underground fuel tank, or in any container, barrel, a box etc. for example, or pellets can be stored in a grain silo, for instance, situated outside in a remote even to 60 m from the stove.
There are known some retort pellets burners, offered by the various manufacturers, to which fuel is supplied from an outer tank using a feeder provided in a form of a flexible pipe. Pellets are poured throughout a controlled lock into an inner store container located at the very burner. The maximum filling level is set by a state sensor. Further transportation of pellets - already within the burner - is performed using a spiral, worm feeder, and the fuel is delivered to the burner from its bottom side. The pellets are transported to the rotary combustion chamber, the so-called retort, situated above the feeder, and they are completely burnt in it. The rotation of the retort helps to move ash away and improves the burning conditions. Falling out of the unburned pellets of the combustion chamber is not possible. Only light ash can be blown out of the retort. In this type of burners there is a triple aeration system. First of all the air is delivered by a fan located in the burner providing the hot air flow, thanks to which pellets can be automatically ignited in the retort. This hot air flow coming from the fan is not used for transporting pellets. In addition, the burner is equipped with a secondary air blow-in, just above the hearth. The secondary air is delivered, throughout the throttles properly shaped and ended with nozzles, directly over the retort, burning out the formed gases. A precise, spatial and multi-point air dosing enables the high efficiency combustion to be obtained, limiting the amount of ash as well. In turn, the primary air is being blown in into ducts provided in the retort's floor.
Furthermore, the burner is equipped with a special ring which is to fulfil two tasks - to remove ash from the hearth and to move a grate so as to get an uniform distribution of glow over the entire hearth {of the burner). The device for supplying air and fuel to a pellet burner, according to the utility model, is comprised of a centrifugal fan, the motor of which is located inside a blade ring of the fan's rotor. In accordance with the utility model the fan is equipped with a shaft with a notched rack, which meshes with a transmission mechanism, and the transmission is aligned with the fan by means of a centring sleeve. On the other side there is a fuel feeder attached to the transmission shaft, made in a form of a steel worm spring, ended with an additional mixing element.
Owing to the solution according to the utility model, a simple design solution of the device has been developed, in which its two basic functions are combined, i.e. a traditional function of delivering air to the blowing-in chamber of the pellets burner, and the one transmitting drive to the feeder delivering the pellets fuel into the burner combustion chamber are being performed.
The subject of the utility model is shown in the drawing, Fig. 1 , of which shows an exploded perspective view from the top of the device delivering fuel and air to the pellet burner; Fig 2 shows as side view of the device; and Fig. 3 - shows a side view of the centrifugal fan.
The device presented in the drawing is one of the elements of the pellet burner and it is comprised of a centrifugal fan 1, having a rotor 2 with a blade-ring 3 and it is equipped with a shaft 4 with a notched rack, in addition, the shaft 4, while passing throughout a mounting plate 5, meshes with a transmission mechanism 6. The transmission 6 is aligned with the fan by means of the centring sleeve 7, whereas, on the other side there is a feeder 10, which is attached using a press bolt 9 to the shaft 8 of the transmission 6, and it is formed in a steel worm spiral for transporting pellets and delivering fuel to the burner combustion chamber. The feeder 10 is ended with an additional, triangular, mixing element 11.
List of designations(labels) - fan
- rotor
- blade-ring
- fan's shaft
- mounting plate
- transmission (gear)
- centring sleeve
- transmission's (gear's) (shaft
- press bolt
- fedder (conveyor)
- mixing element

Claims

C l a i m s
1. The device for supplying air and fuel to the pellets burner, comprising a centrifugal fan, a drive motor of which is located inside a blade-ring of the fan's rotor, characterised in that the fan (1) has an outer shaft (4) with a notched rack, which meshes with a transmission 6) mechanism, in addition the transmission (6) is aligned with the fan by means of centring sleeve (7), whereas a fuel feeder (10) formed in a steel worm spiral is attached to the shaft (8)of the transmission (6).
2. The device according to claims 1, characterised in that the feeder (10) is advantageously ended with an additional mixing element (11).
3. The device according to claims 2, characterised in that the additional mixing element (11) is triangular.
PCT/PL2016/000012 2015-02-23 2016-02-10 Device for supplying air and fuel to a pellet burner WO2016137345A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DKPA201770705A DK179899B1 (en) 2015-02-23 2016-02-10 Device for supplying air and fuel to a pellet burner
DE212016000053.5U DE212016000053U1 (en) 2015-02-23 2016-02-10 Device for supplying a pellet burner with air and fuel
FI20175834A FI20175834A (en) 2015-02-23 2017-09-19 Device for supplying air and fuel to pellet burner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL123819U PL69028Y1 (en) 2015-02-23 2015-02-23 Device supplying air and fuel to the pellet burner
PLW.123819 2015-02-23

Publications (1)

Publication Number Publication Date
WO2016137345A1 true WO2016137345A1 (en) 2016-09-01

Family

ID=56760252

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2016/000012 WO2016137345A1 (en) 2015-02-23 2016-02-10 Device for supplying air and fuel to a pellet burner

Country Status (7)

Country Link
CZ (2) CZ33084U1 (en)
DE (1) DE212016000053U1 (en)
DK (1) DK179899B1 (en)
FI (1) FI20175834A (en)
HU (1) HU4892U (en)
PL (1) PL69028Y1 (en)
WO (1) WO2016137345A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE422435A (en) *
US2200660A (en) * 1938-03-31 1940-05-14 Link Belt Co Air control for stokers and the like
US2324042A (en) * 1941-03-26 1943-07-13 Carl E Swenson Conveyer apparatus
DE9411426U1 (en) * 1994-07-14 1994-09-08 Buderus Heiztechnik Gmbh Fan for an oil and gas fan burner
US5429110A (en) * 1994-09-09 1995-07-04 Tsd Industries, Inc. Mobile pellet stove with thermal barrier and ventilated firepot
DE10303688B3 (en) * 2003-01-30 2004-08-05 Webasto Thermosysteme International Gmbh Auxiliary heating device for automobile has combustion air supplied via side channel fan with fixed and rotatable channel housing parts
PL61624Y1 (en) 2001-03-07 2005-09-30 Dospel Sp Z Oo Fan in particular that for fireplaces

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU61624U1 (en) 2006-10-02 2007-03-10 Борис Александрович Гормин SHAVER

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE422435A (en) *
US2200660A (en) * 1938-03-31 1940-05-14 Link Belt Co Air control for stokers and the like
US2324042A (en) * 1941-03-26 1943-07-13 Carl E Swenson Conveyer apparatus
DE9411426U1 (en) * 1994-07-14 1994-09-08 Buderus Heiztechnik Gmbh Fan for an oil and gas fan burner
US5429110A (en) * 1994-09-09 1995-07-04 Tsd Industries, Inc. Mobile pellet stove with thermal barrier and ventilated firepot
PL61624Y1 (en) 2001-03-07 2005-09-30 Dospel Sp Z Oo Fan in particular that for fireplaces
DE10303688B3 (en) * 2003-01-30 2004-08-05 Webasto Thermosysteme International Gmbh Auxiliary heating device for automobile has combustion air supplied via side channel fan with fixed and rotatable channel housing parts

Also Published As

Publication number Publication date
HU4892U (en) 2018-07-30
DE212016000053U1 (en) 2017-09-28
PL123819U1 (en) 2016-08-29
FI20175834A (en) 2017-09-19
DK179899B1 (en) 2019-09-10
PL69028Y1 (en) 2017-04-28
DK201770705A1 (en) 2017-10-02
CZ2017550A3 (en) 2017-11-01
CZ33084U1 (en) 2019-08-06

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