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WO2009094677A2 - A fuel burner system - Google Patents

A fuel burner system Download PDF

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Publication number
WO2009094677A2
WO2009094677A2 PCT/ZA2009/000003 ZA2009000003W WO2009094677A2 WO 2009094677 A2 WO2009094677 A2 WO 2009094677A2 ZA 2009000003 W ZA2009000003 W ZA 2009000003W WO 2009094677 A2 WO2009094677 A2 WO 2009094677A2
Authority
WO
WIPO (PCT)
Prior art keywords
burner body
zone
burner
preheating zone
preheating
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/ZA2009/000003
Other languages
French (fr)
Other versions
WO2009094677A3 (en
Inventor
Kenneth Michael Hall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BUZBEE Pty Ltd
Sasol Oil Pty Ltd
Original Assignee
BUZBEE Pty Ltd
Sasol Oil Pty Ltd
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 BUZBEE Pty Ltd, Sasol Oil Pty Ltd filed Critical BUZBEE Pty Ltd
Publication of WO2009094677A2 publication Critical patent/WO2009094677A2/en
Publication of WO2009094677A3 publication Critical patent/WO2009094677A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F23D11/443—Vaporising devices incorporated with burners heated by the main burner flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/28—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid in association with a gaseous fuel source, e.g. acetylene generator, or a container for liquefied gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/66—Preheating the combustion air or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel
    • F23D17/002—Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2214/00—Cooling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • This invention relates to a burner. More particularly, this invention relates to a fuel burner used in a cooking apparatus.
  • Cooking appliances of the portable type that are powered by paraffin or gas has been known for many years in the state of the art.
  • the Primus stove is a pressurised paraffin appliance resulting in efficient fuel combustion.
  • the disadvantages of this stove include:
  • the paraffin fuel container is pressurised by means of a hand pump.
  • the applicant has described a fuel canister in South African patent number 2006/01588 which contains a paraffin/LPG mix.
  • the LPG may contain propane and/or butane.
  • the propane having a lower flash point, acts as a fire starter while also acting as a propellant.
  • a burner body which includes:
  • the preheating zone may be a substantially toroidal chamber.
  • the preheating zone may be located upstream of the expansion zone.
  • the preheating zone may be a tube which extends at least partway around the burner, to assist in preheating a heating mixture before it is combusted.
  • the preheating zone and the expansion zone may be part of the same chamber.
  • the preheating zone and the expansion zone may be in flow communication.
  • a conduit may connect said zones.
  • the conduit may extend substantially into the preheating zone.
  • the conduit may extend to an upper wall portion of the preheating zone.
  • One or more orifice may be located in or proximally the expansion zone.
  • the orifice is located at a ceiling of the expansion zone.
  • the orifice may be in the form of a jet.
  • the heating mixture may be a mixture of liquid hydrocarbon and a combustible gas.
  • the heating mixture may be guided towards the preheating zone by means of one or more conduits which extend from a pressurised fuel tank wherein the heating mixture is contained.
  • the pressurised fuel tank may be in the form of a canister.
  • a combustion zone may be located above the preheating zone of the burner body. This may be termed the hat of the burner body.
  • the hat may include a series of perforations.
  • the perforations may facilitate distribution of a gasified heating mixture.
  • the burner body may include castellations. This may be termed the crown of the burner body.
  • the castellations may be disposed perimetrically, substantially vertically on the burner body.
  • the castellations may be configured so as to assist in control of the temperature of the burner body.
  • the temperatures of the preheating zone may be kept below 380°C to ensure that the paraffin in the heating mixture does not carbonize. Preferably the temperature is kept below 350 ° C.
  • a burner control mechanism which include a valve and two conduits detachably secured to the valve, wherein in use, one of the conduits extends upwardly and the other is disposed at an angle thereto.
  • one of the conduits extends upwardly and the other substantially downwardly thereto.
  • the burner control mechanism may balance the flow of the fuel from a pressurised fuel reservoir to the burner.
  • the burner control mechanism may facilitate partial separation of the combustible gas from the liquid hydrocarbon.
  • Partial separation is achieved by the configuration of the two conduits.
  • a burner control mechanism which mechanism includes a needle that is engageable with a seat; wherein one of the needle and the seat is stainless steel and the other brass.
  • the needle may be formed from stainless steel.
  • the seat may be made from brass.
  • a fuel burner system which includes:- - a burner body as described above;
  • a pressurised fuel reservoir containing a heating mixture of a combustible gas and a liquid hydrocarbon.
  • the fuel burner system may be utilised in any cooking and/or heating apparatus.
  • Figure 1 shows a three-dimensional view of a burner body, according to the present invention
  • Figure 2 shows a cross-sectional view of a burner body with two expansion chambers according to the present invention
  • Figure 3-4 shows a front-view and a cross-sectional view along a line A-A of a control mechanism, according to a second and third aspect of the invention
  • Figure 5 shows a three-dimensional view of a fuel burner system, according to a fourth aspect of the invention.
  • FIG. 6 shows a cross-sectional view of a burner body, according to the present invention.
  • reference numeral 10 refers generally to a burner body according to the invention.
  • the burner body 10 includes a preheating zone in the form of a chamber 12, an expansion zone in the form of a chamber 14 and a orifice in the form of a jet 16.
  • the preheating chamber 12 is a toroidal cavity, as shown.
  • the preheating chamber 12 and the expansion chamber 14 are in flow communication with each other by means of a conduit 22.
  • the conduit 22 extends substantially into the preheating chamber 12, preferably to the ceiling 12b of the preheating chamber 12.
  • the heating mixture 24 may be a mixture including a liquid hydrocarbon and a combustible gas.
  • the combustible gas is propane and/or butane and the liquid hydrocarbon is illuminating paraffin.
  • propane is 5 to 40 % v/v and the paraffin from about 60 to 95% v/v.
  • the heating mixture 24 is guided towards the preheating chamber 12 by means of two angularly disposed conduits 26a and 26b, which extend from a pressurised tank 28 wherein the heating mixture 24 is contained.
  • the combustible gas moves at a faster rate and reaches the burner body 10 before the liquid hydrocarbon.
  • the liquid hydrocarbon then passes through the preheating chamber 12 and exits as a substantially vaporised hydrocarbon.
  • the vapour is forced to exit the preheating chamber due to pressure within the preheating chamber 12.
  • the vapour then flows through a conduit 22 to the expansion chamber 14, where it substantially gasifies and escapes through the jet 16 located at the ceiling 14b of the expansion chamber 14, passes through the series of perforations of the hat 20 and is ignited and burns.
  • the expansion chamber 14 includes a baffle 42 having a first and second orifice, 44a and 44b. The inventor believes that the baffle 42 regulates the flow of gasified vapours to the jet 16.
  • the jet 16 includes a jet filter 46.
  • the inventor believes that the jet filter 46 prevents liquid drops, which have not been vaporised and/or gasified, from passing throught the jet 16.
  • the burner body 10 includes castellations 32. This is termed the crown of the burner body 10.
  • the inventor believes that the castellations 32 aid in the collection of heat and heat transfer to the burner body 10.
  • the inventor further believes that the dimensions of the castellations 32, in particular, the height of the castellations 32 controls the temperature of the preheating zone in ensuring that the preheating zone does not exceed 380 ° C, more preferably that the preheating zone does not exceed 350 ° C.
  • One or more temperature tuning rings 48 is detachably positioned on a free end of the castellations 32.
  • the ring 48 comprises a flange 50, which the inventor believes assists in trapping the heat and deflecting said heat onto the castellations 32.
  • a burner control mechanism 34 which includes a valve 36 and two conduits 26a and 26b which are detachable connected to the valve 36.
  • the control mechanism balances the flow of the fuel from the pressurised fuel tank 28 to the burner body 10. Partial separation of the combustible gas and the liquid hydrocarbon is achieved by the configuration of the two conduits 26a and 26b as one of the conduits 26a extends upwardly and the other 26b downwardly.
  • the control mechanism includes a stainless needle 38 that is engageable with a brass seat 40.
  • the burner operates as follows.
  • the control mechanism 34 is actuated and the heating mixture 24 is released.
  • the heating mixture includes a combustible gas and a liquid hydrocarbon. This mixture is partially separated into a gas and a liquid. The gas moves at a faster rate than the liquid and moves in conduit 26a and rapidly passes through the preheating chamber 12 expansion chamber 14, jet 16 and is ignited.
  • the castellations 32 collects the heat generated from ignition of the combustible gas and transfers it to the burner body. Furthermore, the heat is trapped by the temperature tuning rings 48 and deflected by the flange 50 onto the castellations 32.
  • the liquid hydrocarbon lags slightly behind the combustible gas and passes through the hot preheating chamber 12, where the heat from the burner body 10 vaporises the liquid hydrocarbon.
  • the jet filter 46 prevents any liquid drops that have not been vaporised and/or gasified from passing through the jet 16. At steady state both the gas and liquid continuously pass through the preheating chamber 12.
  • the height of the castellations controls the temperature of the preheating chamber and maintains said temperature below 350 0 C so as prevent carbonization of the paraffin in the heating mixture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

The invention provides a burner body which includes a preheating zone, an expansion zone, and one or more orifice, wherein the preheating zone is a substantially toroidal chamber. The invention extends to a burner control mechanism which include a valve and two conduits detachably secured to the valve, wherein in use, one of the conduits extends upwardly and the other is disposed at an angle thereto and which facilitates partial separation of a combustible gas and a liquid hydrocarbon from a heating mixture which is a mixture of liquid hydrocarbon and combustible gas.

Description

A FUEL BURNER SYSTEM
INTRODUCTION
This invention relates to a burner. More particularly, this invention relates to a fuel burner used in a cooking apparatus.
BACKGROUND TO THE INVENTION
Cooking appliances of the portable type that are powered by paraffin or gas has been known for many years in the state of the art.
Various types of burners are known for liquid and gas powered appliances. These include paraffin wick, pressurised paraffin and liquid petroleum gas cylinder based appliances.
The Primus stove is a pressurised paraffin appliance resulting in efficient fuel combustion. The disadvantages of this stove include:
• Preheating, often using methylated spirits, is required to start the burner.
• The paraffin fuel container is pressurised by means of a hand pump.
• The paraffin is often overheated resulting in the fuel carbonizing and blocking the jet.
The disadvantage of wick type burners include:
• They take a long time to heat up.
• The wick deteriorates quickly reducing the cooker's performance.
• Pots are left with black bases because of incomplete fuel combustion.
The applicant has described a fuel canister in South African patent number 2006/01588 which contains a paraffin/LPG mix. The LPG may contain propane and/or butane. In this patent the applicant claims that the propane, having a lower flash point, acts as a fire starter while also acting as a propellant. OBJECTS OF THE INVENTION
It is the object of the present invention to provide a new fuel burner configuration.
It is a second object of the invention to provide a control mechanism for controlling the flow of a heating mixture from a pressurised vessel.
It is a further object of the invention to provide a gas-liquid fuel burner to be used in a cooking appliance or heating apparatus.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention there is provided a burner body which includes:
- a preheating zone;
- an expansion zone and
- one or more orifice.
The preheating zone may be a substantially toroidal chamber. The preheating zone may be located upstream of the expansion zone.
Alternatively, the preheating zone may be a tube which extends at least partway around the burner, to assist in preheating a heating mixture before it is combusted.
The preheating zone and the expansion zone may be part of the same chamber.
The preheating zone and the expansion zone may be in flow communication. A conduit may connect said zones. The conduit may extend substantially into the preheating zone.
The conduit may extend to an upper wall portion of the preheating zone.
One or more orifice may be located in or proximally the expansion zone.
In use, the orifice is located at a ceiling of the expansion zone.
The orifice may be in the form of a jet.
The heating mixture may be a mixture of liquid hydrocarbon and a combustible gas.
The heating mixture may be guided towards the preheating zone by means of one or more conduits which extend from a pressurised fuel tank wherein the heating mixture is contained.
The pressurised fuel tank may be in the form of a canister.
A combustion zone may be located above the preheating zone of the burner body. This may be termed the hat of the burner body.
The hat may include a series of perforations.
The perforations may facilitate distribution of a gasified heating mixture.
The burner body may include castellations. This may be termed the crown of the burner body.
The castellations may be disposed perimetrically, substantially vertically on the burner body. The castellations may be configured so as to assist in control of the temperature of the burner body.
The temperatures of the preheating zone may be kept below 380°C to ensure that the paraffin in the heating mixture does not carbonize. Preferably the temperature is kept below 350°C.
According to a second aspect of the invention there is provided a burner control mechanism, which include a valve and two conduits detachably secured to the valve, wherein in use, one of the conduits extends upwardly and the other is disposed at an angle thereto.
Alternatively, one of the conduits extends upwardly and the other substantially downwardly thereto.
The burner control mechanism may balance the flow of the fuel from a pressurised fuel reservoir to the burner.
The burner control mechanism may facilitate partial separation of the combustible gas from the liquid hydrocarbon.
Partial separation is achieved by the configuration of the two conduits.
According to a third aspect of the invention there is provided a burner control mechanism , which mechanism includes a needle that is engageable with a seat; wherein one of the needle and the seat is stainless steel and the other brass.
The needle may be formed from stainless steel. The seat may be made from brass.
According to a fourth aspect of the invention there is provided a fuel burner system which includes:- - a burner body as described above;
- a control mechanism as described above; and
- a pressurised fuel reservoir containing a heating mixture of a combustible gas and a liquid hydrocarbon.
The fuel burner system may be utilised in any cooking and/or heating apparatus.
DETAILED DESCRIPTION OF AN EMBODIMENT OF THE INVENTION
The invention will now be described in greater detail, by way of non-limiting example only with reference to the following drawings in which:
Figure 1 shows a three-dimensional view of a burner body, according to the present invention;
Figure 2 shows a cross-sectional view of a burner body with two expansion chambers according to the present invention;
Figure 3-4 shows a front-view and a cross-sectional view along a line A-A of a control mechanism, according to a second and third aspect of the invention;
Figure 5 shows a three-dimensional view of a fuel burner system, according to a fourth aspect of the invention;
Figure 6 shows a cross-sectional view of a burner body, according to the present invention. In Figures 1 to 6, reference numeral 10 refers generally to a burner body according to the invention. The burner body 10 includes a preheating zone in the form of a chamber 12, an expansion zone in the form of a chamber 14 and a orifice in the form of a jet 16.
The preheating chamber 12 is a toroidal cavity, as shown.
The preheating chamber 12 and the expansion chamber 14 are in flow communication with each other by means of a conduit 22.
The conduit 22 extends substantially into the preheating chamber 12, preferably to the ceiling 12b of the preheating chamber 12.
The heating mixture 24 may be a mixture including a liquid hydrocarbon and a combustible gas. Typically the combustible gas is propane and/or butane and the liquid hydrocarbon is illuminating paraffin. In the heating mixture the propane is 5 to 40 % v/v and the paraffin from about 60 to 95% v/v.
The heating mixture 24 is guided towards the preheating chamber 12 by means of two angularly disposed conduits 26a and 26b, which extend from a pressurised tank 28 wherein the heating mixture 24 is contained.
In use, the combustible gas moves at a faster rate and reaches the burner body 10 before the liquid hydrocarbon.
The liquid hydrocarbon then passes through the preheating chamber 12 and exits as a substantially vaporised hydrocarbon. The vapour is forced to exit the preheating chamber due to pressure within the preheating chamber 12. The vapour then flows through a conduit 22 to the expansion chamber 14, where it substantially gasifies and escapes through the jet 16 located at the ceiling 14b of the expansion chamber 14, passes through the series of perforations of the hat 20 and is ignited and burns.
The expansion chamber 14 includes a baffle 42 having a first and second orifice, 44a and 44b. The inventor believes that the baffle 42 regulates the flow of gasified vapours to the jet 16.
The jet 16 includes a jet filter 46. The inventor believes that the jet filter 46 prevents liquid drops, which have not been vaporised and/or gasified, from passing throught the jet 16.
The burner body 10 includes castellations 32. This is termed the crown of the burner body 10.
The inventor believes that the castellations 32 aid in the collection of heat and heat transfer to the burner body 10. The inventor further believes that the dimensions of the castellations 32, in particular, the height of the castellations 32 controls the temperature of the preheating zone in ensuring that the preheating zone does not exceed 380°C, more preferably that the preheating zone does not exceed 350°C.
One or more temperature tuning rings 48 is detachably positioned on a free end of the castellations 32. The ring 48 comprises a flange 50, which the inventor believes assists in trapping the heat and deflecting said heat onto the castellations 32.
As shown in Figures 3 and 4, there is provided a burner control mechanism 34 which includes a valve 36 and two conduits 26a and 26b which are detachable connected to the valve 36. The control mechanism balances the flow of the fuel from the pressurised fuel tank 28 to the burner body 10. Partial separation of the combustible gas and the liquid hydrocarbon is achieved by the configuration of the two conduits 26a and 26b as one of the conduits 26a extends upwardly and the other 26b downwardly.
The control mechanism includes a stainless needle 38 that is engageable with a brass seat 40.
In use, the burner operates as follows.
The control mechanism 34 is actuated and the heating mixture 24 is released. The heating mixture includes a combustible gas and a liquid hydrocarbon. This mixture is partially separated into a gas and a liquid. The gas moves at a faster rate than the liquid and moves in conduit 26a and rapidly passes through the preheating chamber 12 expansion chamber 14, jet 16 and is ignited.
The castellations 32 collects the heat generated from ignition of the combustible gas and transfers it to the burner body. Furthermore, the heat is trapped by the temperature tuning rings 48 and deflected by the flange 50 onto the castellations 32.
The liquid hydrocarbon lags slightly behind the combustible gas and passes through the hot preheating chamber 12, where the heat from the burner body 10 vaporises the liquid hydrocarbon.
The vaporised hydrocarbon exits the preheating chamber 12, flows via conduit 22 to the expansion chamber 14 where it is substantially gasified. The baffle 42 with orifice 44a and 44b regulates the flow of the substantially gasified vapour to the jet 16. The gasified vapours escapes through the jet 16, passes through the perforations of the hat 20 and burns. The jet filter 46 prevents any liquid drops that have not been vaporised and/or gasified from passing through the jet 16. At steady state both the gas and liquid continuously pass through the preheating chamber 12.
The height of the castellations controls the temperature of the preheating chamber and maintains said temperature below 3500C so as prevent carbonization of the paraffin in the heating mixture.
Although certain embodiments of the invention have been described herein, it will be readily appreciated to any person skilled in the art that other modifications and/or variations of the inventions are possible. Such modifications are therefore to be- considered as falling within the scope and spirit of the invention as herein described or exemplified.

Claims

Claims
1. A burner body which includes:
- a preheating zone;
5 - an expansion zone and
- one or more orifice.
2. A burner body as claimed in claim 1 , wherein the preheating zone is a substantially toroidal chamber. 0
3. A burner body as claimed in claim 1 or claim 2, wherein the preheating zone is located upstream of the expansion, zone.
4. A burner body as claimed in claim 1 or claim 2, wherein the preheating5 zone is a tube which extends at least partway around the burner, to assist in preheating a heating mixture before it is combusted.
5. A burner body as claimed in any one of the preceding claims, wherein the preheating zone and the expansion zone are part of the same chamber. 0
6. A burner body as claimed in any one of the preceding claims, wherein the preheating zone and the expansion zone are in flow communication and a conduit connects said zones. 5
7. A burner body as claimed in claim 6, wherein the conduit extends and protrudes into the preheating zone.
8. A burner body as claimed in claim 7, wherein the conduit extends to an upper wall portion of the preheating zone. i0
9. A burner body as claimed in any one of the preceding claims, wherein one or more orifices are located in or proximally the expansion zone.
10. A burner body as claimed in claim 9, wherein, in use, the orifice is located at a ceiling of the expansion zone.
11. A burner body as claimed in claim 9 or claim 10, wherein the orifice is in the form of a jet.
12. A burner body as claimed in any one of the preceding claims, wherein the heating mixture is a mixture of liquid hydrocarbon and a combustible gas, the heating mixture being guided towards the preheating zone by means of one or more conduits which extend from a pressurised fuel tank wherein the heating mixture is contained.
13. A burner body as claimed in claim 12, wherein the pressurised fuel tank is in the form of a canister.
14. A burner body as claimed in any one of the preceding claims, wherein a combustion zone is located above the preheating zone of the burner body.
15. A burner body as claimed in claim 14, wherein the combustion zone has a hat like appearance and includes a series of perforations.
16. A burner body as claimed in claim 15, wherein the perforations facilitate distribution of a gasified heating mixture.
17. A burner body as claimed in any one of the preceding claims, wherein the burner body includes castellations.
18. A burner body as claimed in claim 17, wherein the castellations are disposed perimetrically, substantially vertically on the burner body.
19. A burner body as claimed in claim 17 or 18, wherein the castellations are configured so as to assist in control of the temperature of the burner body.
20. A burner body as claimed in any one of the preceding claims, wherein, in use, the temperature of the preheating zone may be kept below 380°C to ensure that the paraffin in the heating mixture does not carbonize, typically below 350°C.
21 A burner control mechanism, which include a valve and two conduits detachably secured to the valve, wherein in use, one of the conduits extends upwardly and the other is disposed at an angle thereto.
22. A control mechanism as claimed in claim 21 , wherein one of the conduits extends upwardly and the other substantially downwardly thereto.
23. A control mechanism as claimed in claim 21 or claim 22, wherein it balances the flow of the fuel from a pressurised fuel reservoir to a burner.
24. A control mechanism as claimed in any one of claims 21 to 23, which facilitates partial separation of a combustible gas and a liquid hydrocarbon from a heating mixture which is a mixture of liquid hydrocarbon and combustible gas.
25. A control mechanism as claimed in any one of claims 21 to 24, which includes a needle that is engageable with a seat; wherein one of the needle and the seat is stainless steel and the other brass.
26. A fuel burner system which includes:- - a burner body as claimed in any one of claims 1 to 20;
- a control mechanism as claimed in any one claims 21 to 25; and - a pressurised fuel reservoir containing a heating mixture of a combustible gas and a liquid hydrocarbon.
27. A fuel burner system as claimed in claim 26, which system is a cooking and/or heating apparatus.
PCT/ZA2009/000003 2008-01-25 2009-01-15 A fuel burner system Ceased WO2009094677A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200800769 2008-01-25
ZA2008/0769 2008-01-25

Publications (2)

Publication Number Publication Date
WO2009094677A2 true WO2009094677A2 (en) 2009-07-30
WO2009094677A3 WO2009094677A3 (en) 2009-12-10

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Family Applications (1)

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PCT/ZA2009/000003 Ceased WO2009094677A2 (en) 2008-01-25 2009-01-15 A fuel burner system

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Publication number Priority date Publication date Assignee Title
CN109180043A (en) * 2018-10-15 2019-01-11 湖南斯多孚节能科技有限公司 Crystallite heat-insulating granules and its continuous producing apparatus
US11175050B2 (en) * 2019-12-04 2021-11-16 Hangzhou Xiaoyi E-commerce Co., Ltd. Heater

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109180043A (en) * 2018-10-15 2019-01-11 湖南斯多孚节能科技有限公司 Crystallite heat-insulating granules and its continuous producing apparatus
US11175050B2 (en) * 2019-12-04 2021-11-16 Hangzhou Xiaoyi E-commerce Co., Ltd. Heater

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