Canadian Patents Database / Patent 2738432 Summary

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(12) Patent: (11) CA 2738432
(54) English Title: BIOMASS BURNER FOR A MAPLE SYRUP EVAPORATOR
(54) French Title: BRULEUR DE BIOMASSE POUR EVAPORATEUR DE SIROP D'ERABLE
(51) International Patent Classification (IPC):
  • C13B 25/04 (2011.01)
  • C13B 25/00 (2011.01)
  • F23C 7/00 (2006.01)
  • F23C 10/02 (2006.01)
  • F23C 10/20 (2006.01)
(72) Inventors (Country):
  • BERGERON, MARTIN (Canada)
  • CHABOT, VALLIER (Canada)
  • BEAUCHAMP, MAURICE (Canada)
(73) Owners (Country):
  • LES EQUIPEMENTS D'ERABLIERE CDL INC. (Canada)
(71) Applicants (Country):
  • LES EQUIPEMENTS D'ERABLIERE CDL INC. (Canada)
(74) Agent: GOUDREAU GAGE DUBUC
(45) Issued: 2014-01-21
(22) Filed Date: 2011-04-27
(41) Open to Public Inspection: 2012-08-13
Examination requested: 2011-04-27
(30) Availability of licence: N/A
(30) Language of filing: English

English Abstract

A burner using biomass combustibles, namely pellet fuel, for a maple syrup evaporator. Compared to wood or oil burning heat sources, pellet fuel is less costly, burns more efficiently and generates the heat necessary to properly evaporate maple sap. The burner includes a burn pit defining a plurality of holes for allowing air to communicate between a combustion chamber and a primary air plenum formed between a base and an underside of the burn pit. An air supply conduit supplies air supply to the primary air plenum. A fuel conduit in communication with the combustion chamber supplies the pellet fuel for combustion within said burn pit. A secondary plenum in pneumatic communication with the primary air plenum receives and cools a portion of the primary air supply. A plurality of injectors in communication with the secondary plenum inject the cooled air into the combustion chamber.


French Abstract

Un brûleur utilisant des combustibles de biomasse, notamment des granules, sert à un évaporateur de sirop d'érable. Comparativement aux sources de chaleur brûlant du bois ou du mazout, les granules sont moins coûteuses, brûlent plus efficacement et produisent la chaleur nécessaire pour bien évaporer l'eau d'érable. Le brûleur comprend un foyer définissant une pluralité de trous pour permettre à l'air de communiquer entre la chambre de combustion et le caisson de distribution primaire formé entre la base et l'espace sous le foyer. Un conduit d'approvisionnement d'air fournit l'air au caisson de distribution primaire. Un conduit de combustible en communication avec la chambre de combustion fournit les granules pour la combustion dans ledit foyer. Un caisson de distribution secondaire en communication pneumatique avec le caisson de distribution primaire reçoit et refroidit une partie de l'approvisionnement primaire d'air. Une pluralité d'injecteurs en communication avec le caisson secondaire injecte l'air refroidi dans la chambre de combustion.


Note: Claims are shown in the official language in which they were submitted.



11

CLAIMS:


1. A biomass burner (32) for a maple sap evaporator comprising:
a burner assembly (36) comprising a base (54) and a top for forming
a combustion chamber (66) therein, said top defining an
entrance and an exit;
a burn pit (68) disposed within said base (54) and defining a plurality
of holes (70) for allowing air to communicate between said
combustion (66) chamber and a primary air plenum (76) formed
between said base (54) and an underside of said burn pit (68);
an air supply conduit (90) for supplying a primary air supply to said
primary air plenum (76);
a fuel conduit (92) in communication with said combustion chamber
(66) for supplying a pellet fuel (46) for combustion within said
burn pit (68);
a secondary plenum (102) in pneumatic communication with said
primary air plenum (76) for receiving and cooling a portion of
said primary air supply; and
a plurality of injectors (106) in communication with said secondary
plenum (102) for injecting said cooled air into said combustion
chamber (66);
wherein when said pellet fuel (46) undergoes combustion with said
primary air supply, a generated heat is directed towards said exit by
said injected cooled air.


2. The biomass burner of claim 1, wherein the a plurality of holes (70) of the

burn pit (68) are evenly distributed thereon.


3. The biomass burner of claim 1 or 2, wherein said top is a semi-circular
dome (56).


4. The biomass burner according any one of claims 1 to 3, wherein said exit
comprises a cone (86) for accelerating said heat out of said
combustion chamber (66).



12

5. The biomass burner according to any one of claims 1 to 4, further
comprising a hollow divider (82) projecting from said burn pit (68) into
said combustion chamber (66) for dividing said supplied pellet fuel into
two sub-burn pits.


6. The biomass burner according to any one of claims 1 to 5, further
comprising a door (40) for sealing said entrance.


7. The biomass burner of claim 6, wherein said door (40) is hollowed for
providing said secondary air plenum (102), said door (40) comprising
an inlet for pneumatic communication of said primary air plenum (76)
and said secondary air plenum (102) and defining a plurality of holes
formed within said door (40) for forming said injectors (106).


8. The biomass burner according to any one of claims 1 to 7, wherein said
pellet fuel (46) is supplied to said burn pit (68) by an auger screw
conveyor (114) provided in said fuel conduit (92).


9. The biomass burner according to any one of claims 1 to 8, wherein said
primary air supply is supplied to said primary and said secondary air
plenums (76, 102) via an air blower (96) connected to said air supply
conduit (90).


10. The biomass burner according to any one of claims 1 to 8, wherein said
pellet fuel is wood pellet fuel.


A single figure which represents the drawing illustrating the invention.

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Admin Status

Title Date
(22) Filed 2011-04-27
Examination Requested 2011-04-27
(41) Open to Public Inspection 2012-08-13
(45) Issued 2014-01-21

Maintenance Fee

Description Date Amount
Last Payment 2017-02-20 $200.00
Next Payment if small entity fee 2018-04-27 $100.00
Next Payment if standard fee 2018-04-27 $200.00

Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following

  • the reinstatement fee set out in Item 7 of Schedule II of the Patent Rules;
  • the late payment fee set out in Item 22.1 of Schedule II of the Patent Rules; or
  • the additional fee for late payment set out in Items 31 and 32 of Schedule II of the Patent Rules.

Payment History

Fee Type Anniversary Year Due Date Amount Paid Paid Date
Request for Examination $800.00 2011-04-27
Filing $400.00 2011-04-27
Registration of Documents $100.00 2011-06-13
Maintenance Fee - Application - New Act 2 2013-04-29 $100.00 2013-03-14
Final $300.00 2013-08-13
Maintenance Fee - Patent - New Act 3 2014-04-28 $100.00 2014-03-25
Maintenance Fee - Patent - New Act 4 2015-04-27 $100.00 2015-02-26
Maintenance Fee - Patent - New Act 5 2016-04-27 $200.00 2016-03-21
Maintenance Fee - Patent - New Act 6 2017-04-27 $200.00 2017-02-20

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Document
Description
Date
(yyyy-mm-dd)
Number of pages Size of Image (KB)
Abstract 2011-04-27 1 21
Description 2011-04-27 10 496
Claims 2011-04-27 2 62
Drawings 2011-04-27 3 91
Representative Drawing 2011-11-23 1 21
Description 2012-12-10 10 494
Cover Page 2012-08-20 2 60
Cover Page 2013-12-19 2 60
Correspondence 2011-05-12 1 22
Correspondence 2011-06-13 2 65
Correspondence 2012-06-18 1 12
Prosecution-Amendment 2012-09-10 2 54
Prosecution-Amendment 2012-09-11 1 19
Prosecution-Amendment 2012-09-11 2 62
Prosecution-Amendment 2012-12-10 5 162
Prosecution-Amendment 2013-10-25 3 92
Correspondence 2013-11-01 1 16
Correspondence 2013-08-13 1 38