WO1999052408A1 - Appareil de chauffage monobloc de campement - Google Patents

Appareil de chauffage monobloc de campement Download PDF

Info

Publication number
WO1999052408A1
WO1999052408A1 PCT/CA1999/000302 CA9900302W WO9952408A1 WO 1999052408 A1 WO1999052408 A1 WO 1999052408A1 CA 9900302 W CA9900302 W CA 9900302W WO 9952408 A1 WO9952408 A1 WO 9952408A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
casing
heater
burner
stack
Prior art date
Application number
PCT/CA1999/000302
Other languages
English (en)
Inventor
Edgar C. Robinson
Leonard Fleming
Original Assignee
International Thermal Investments 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
Priority claimed from US09/060,862 external-priority patent/US6478022B2/en
Priority claimed from CA002234916A external-priority patent/CA2234916C/fr
Application filed by International Thermal Investments Ltd. filed Critical International Thermal Investments Ltd.
Priority to AU31346/99A priority Critical patent/AU3134699A/en
Priority to EP99913045A priority patent/EP1071357A1/fr
Publication of WO1999052408A1 publication Critical patent/WO1999052408A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/14—Stoves or ranges for gaseous fuels with special adaptation for travelling, e.g. collapsible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2239/00—Fuels
    • F23N2239/06—Liquid fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/02—Space-heating

Definitions

  • This invention relates to a camp heater and, more particularly, to a camp heater which is self contained and easily transportable with a removable stack which will allow byproducts of combustion to escape from the heater to a position outside the enclosed area where the heater is to be operated.
  • the interior heating apparatus typically consisted of a heater located within the tent or enclosure. Fuel was provided from a fuel tank located outside the tent and a stack was installed with some difficulty and extended from the heater to a position outside the enclosure for safety reasons. The assembly of the various components into an operating heater was time consuming and fuel was generally supplied from another source that, if missing, would not allow operation of the heater. When a new operating location was intended, the disassembly of the heater and its transportation in various segments was time consuming and inconvenient.
  • a self-contained camp heater comprising a transportable holder, a fuel tank and a casing mounted on said - 3 - holder and a stack mountable on said holder with said fuel tank and casing, said stack being removable from said holder and connectible to said casing.
  • a method of operating a self-contained camp heater in an enclosed location comprising the steps of transporting a holder to said enclosed locations with said holder operably holding a fuel tank, a casing with a burner within said casing and a stack, removing said stack from said holder and installing said stack in said casing, commencing fuel flow from said fuel tank to said burner and initiating combustion of said fuel within said casing.
  • Figure 1 is a side, diagrammatic partial sectional view of the camp heater according to the invention. - 4 -
  • FIG. 2 is a plan view of the camp heater of Figure
  • Figure 3 is a diagrammatic partial sectional view of the collar and stack assembly used on the camp heater of Figure 1 ;
  • Figure 4 is a diagrammatic cross-sectional view of a regulator commonly called a zero pressure regulator.
  • a camp heater according to the invention is generally illustrated at 100 in Figure 1. It comprises a fuel tank 101 and a burner casing 121 with a removable filler knob 102 threadedly installed to form a fuel entry passageway into the tank 101 so that upon removal, fuel may be added to the tank 101, the fuel used being conveniently JP8, diesel number 1 or fuel of a similar nature.
  • the fuel tank filler knob 102 seals the tank 101 when it is fully tightened as may be the case when the camp heater 100 is being transported. However, when the camp heater 100 is under operation, the filler knob 102 is loosened thereby to allow air - 5 - to enter the tank 101 and keep the pressure within the tank at or near ambient conditions thereby to allow fuel flow.
  • a zero pressure regulator 103 ( Figure 4) is attached by a tube 104 to the fuel tank 101.
  • the zero pressure regulator 103 is a diaphragm type regulator which, when there is no pressure differential, will not allow fuel to enter the regulator 103.
  • a needle valve 106 connected to the diaphragm 105 opens and allows fuel to enter the regulator 103.
  • a primer knob 154 is positioned in the zero pressure regulator 103 thereby to allow fuel to flow to the burner as will be described when burner operation is to be initiated.
  • Zero pressure regulator 103 is mounted on a threaded screw 110 with a knurled knob 111 connected to the upper end of the screw 110. As the knob 111 is rotated, the zero pressure regulator 103 will move upwardly or downwardly as indicated and as desired by the operator thereby to increase or decrease the fuel being provided to the burner as will be described which, in turn, will increase or decrease the heat being produced by the camp heater 100. - 6 -
  • a second and downstream tube 112 extends from the outlet of the zero pressure regulator 103 and joins with a burner 113, commonly known as an S-tube burner 113.
  • S-tube burner 113 has a cylindrical circumferential member or downtube 114 which is mounted over the up ube 113 and is separated from the uptube 113 by spacers 120. Spacers 120 act to conduct heat from the combustion of the fuel within the casing 121 to the downtube 114 and thence to the uptube 113 which heat provides the temperature required for vaporization of the fuel within the uptube 113.
  • Downtube 114 has two superheaters 122, 123 mounted around the downtube 114. Superheaters 122, 123 are circular members and surround the downtube 114 as illustrated. The lowermost portion 124 of downtube 114 is located approximately 1 1/2 inches from the floor or base 130 of camp heater 100.
  • a series of primary air holes 131 are positioned about the circumference of the burner casing 121 to allow for entry of the primary air used in fuel combustion.
  • a high fire ring 132 is connected to the inside circumference of the burner casing 121 and slopes upwardly at approximately a 20 degree angle with secondary air entry holes 133 located on the upper side of the high fire ring 132. It has been found that the - 7 - slope of the high fire ring 132 is important for proper fuel combustion in the particular application to which the camp heater 100 is directed. If the slope is too small, the combustion in the casing outside the downtube 114 and inside the casing 121 will sputter. If the slope of the high fire ring 132 is too large, the length of the combustion flame will increase which can lead to smoke and inefficient combustion.
  • a removable window 160 is positioned on the upper end of the casing 121. Window 160 allows observation of the combustion conditions within the casing 121 and also allows the insertion of a burning paper or like product to initiate combustion in the casing 121 when the heater 100 is ignited.
  • a stack 134 is mounted within the casing 121 to allow for escape of the combustion byproducts such as nitrous oxide, carbon monoxide, carbon dioxide and the like as is well known.
  • Stack 134 is mounted using an internal mounting collar 140 ( Figure 3) which allows entry of the bottom circumference of stack 134 without extensions protruding upwardly from the casing 121 when the stack 134 is removed which extensions are generally sharp and can cause injury and, in any event, which are a nuisance during transportation and in the event the - 8 - heater 100 is to be packaged.
  • the connection between the stack 134 and the collar 140 is the subject of our United States Patent 5,527,180 granted June 18, 1996, the contents of which are incorporated herein by reference.
  • the stack 134 is extendible; that is, the stack 134 is formed in several pieces which are concentric and which fit within each other. Thus, there may be five (5) pieces of stack 134, each of the pieces being approximately one foot in length and concentrically put together such that when the five (5) pieces are removed and assembled to extend upwardly, the stack may be a length of five (5) feet or so.
  • the stack 134 is intended to be manually removable from collar 140 and placed between the casing 121 holding the burner generally illustrated at 141 and the fuel tank 101. When the stack 134 is in this position, the camp heater 100 is easily transported.
  • Two spacer plates 142, 143 are positioned between the casing 121 of the burner 141 and the fuel tank 101 with air circulation holes 144, 145 allowing air to circulate between the spacer plates 142, 143.
  • the spacer plates 142, 143 are intended to shield the fuel tank 101 from the heat generated by the casing 121 and thereby to keep the fuel tank - 9 _
  • Bail 151 allows the camp heater 100 to be easily carried and is generally mounted with its axis 151 at a position where the camp heater 100 remains in a substantially vertical position when carried so as to maintain the configuration of heater 100 as when it is in its operating position.
  • Two valves 152, 153 are provided to stop or allow fuel flow through the lines 112, 104, respectively.
  • the valves 152, 153 are manually operated and prevent or allow fuel to flow through the lines in which they are positioned.
  • the stack 134 will be removed from the casing 121 and located between the fuel tank 101 and the casing 121 as is illustrated in Figure 1.
  • the entire camp heater 100 will be carried by bail 150 which will be in the upwardly extending position.
  • the camp heater 100 will be relatively easily transported in a convenient self- contained package.
  • the camp heater 100 When the operating location is reached, such as in a tent during military operations in colder weather, the camp heater 100 will be positioned on the floor of the tent or ground surface.
  • the stack 134 will be removed from its position between the fuel tank 101 and the casing 121 and the concentric stack pieces will be separated and assembled end to end.
  • the bottom of the stack 134 will be inserted into collar 140 and the top of the stack 134 will be located outside the tent so as to provide egress for the combustion byproducts during heater operation. - 11 -
  • the filler knob 102 will be removed and fuel will be added if required.
  • Filler knob 102 will be refitted and loosely tightened on the fuel tank 101 so that ambient pressure will allow fuel flow from the fuel tank 101.
  • Valves 153, 152 will be opened to allow fuel flow to the zero pressure regulator 103 and to the burner uptube 113.
  • the primer knob 154 will be pushed which will allow fuel to flow to the burner uptube 113. It is initially intended for the fuel flow created by the primer knob 154 to overflow the burner uptube 113 and be deposited on the floor or base 130 of the casing 121. This is so so that the user or operator may initiate combustion within the casing 121 by lighting the fuel which has overflowed from the burner 141 with a burning paper inserted through window 160. This initiates combustion within the casing 121.
  • the combustion within casing 121 will create a high temperature on the outside of the downtube 114 of the burner 141. This heat will be transferred through the spacers 120 to the burner uptube 113 which will allow fuel vaporization to occur within the burner uptube 113. As the fuel vaporizes in the uptube 113, it will travel in a gaseous state downwardly in - 12 - the circumference between uptube 113 and downtube 114 and exit the circumference at the bottom as is illustrated by arrows 161. The vapor will be ignited within the casing 121 and combustion will continue with the heat generated within the casing 121 being used for heating the tent and with the byproducts exiting from the tent through the stack 134.
  • the level of the fuel within the uptube 113 is regulated by the zero pressure regulator 103.
  • the combustion can be increased or decreased.
  • vaporization of the fuel will only occur within the uptube 113 to avoid liquid overflow from the uptube 113. If the fuel level is higher, increased heat will result and if the fuel level is lower, reduced heat will result.
  • the operator need only rotate knurled knob 111 to raise or lower the zero pressure regulator 103 thereby to raise or lower the fuel level within the uptube 113.
  • valve 152 will terminate fuel flow to the uptube 113. This will then cease the vaporization of the fuel within the uptube 113 and the - 13 - combustion will terminate.
  • an r-tube configuration (not illustrated) could be utilised.
  • the r-tube configuration has an uptube in which the fuel is vaporized similarly to the vaporization which takes place in the s-tube configuration described.
  • the uptube is provided with a cap which directs the vapor into a separate downtube where the vapor exits into the casing where combustion of the vaporized fuel again occurs .
  • a carburetor may be conveniently used.
  • the use of a carburetor is particularly attractive where the installation of the heater 100 is intended to be relatively permanent so that fuel spillage during transportation is not a principal consideration.

Landscapes

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

Abstract

L'invention concerne un appareil de chauffage de campement (100), monobloc et transportable, qui comporte un brûleur à l'intérieur d'un boîtier (121) et un réservoir de combustible (101) relié de manière fonctionnelle au brûleur. Une cheminée (134) est montée amovible sur le boîtier (121). Lorsqu'elle est enlevée à des fins de transport, elle est placée sur un support avec le boîtier et le réservoir de combustible. Un régulateur (103) est relié de manière fonctionnelle au réservoir de combustible et, partant, au brûleur. Le régulateur est avantageusement du type sans pression.
PCT/CA1999/000302 1998-04-15 1999-04-14 Appareil de chauffage monobloc de campement WO1999052408A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU31346/99A AU3134699A (en) 1998-04-15 1999-04-14 Self-contained camp heater
EP99913045A EP1071357A1 (fr) 1998-04-15 1999-04-14 Appareil de chauffage monobloc de campement

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/060,862 1998-04-15
US09/060,862 US6478022B2 (en) 1998-04-15 1998-04-15 Self-contained camp heater
CA002234916A CA2234916C (fr) 1998-04-16 1998-04-16 Rechaud de camping complet
CA2,234,916 1998-04-16

Publications (1)

Publication Number Publication Date
WO1999052408A1 true WO1999052408A1 (fr) 1999-10-21

Family

ID=25680136

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1999/000302 WO1999052408A1 (fr) 1998-04-15 1999-04-14 Appareil de chauffage monobloc de campement

Country Status (3)

Country Link
EP (1) EP1071357A1 (fr)
AU (1) AU3134699A (fr)
WO (1) WO1999052408A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1096132A3 (fr) * 1999-10-28 2002-09-04 International Thermal Investments Ltd. Procédé et dispositif de vaporisation de carburant

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1404490A (fr) * 1964-04-22 1965-07-02 Accessoire de protection pour matériel de camping
CH543265A (de) * 1971-08-24 1973-10-31 Kisag Ag Gasrechaud
GB1446895A (en) * 1973-10-20 1976-08-18 Hunt W C Cooking equipment plumbing connection
DE9101813U1 (de) * 1991-02-16 1991-06-13 Geffen, David, 8013 Haar Wärmvorrichtung
DE9106348U1 (de) * 1991-05-23 1991-08-01 Bierewirtz, Peter, Dipl.-Volksw., 2913 Apen Transportabler Holzkocher
US5527180A (en) 1993-07-09 1996-06-18 International Thermal Investments Ltd. Infrared burner
CA2143058A1 (fr) * 1995-02-21 1996-08-22 Edgar C. Robinson Bruleur polyvalent avec echangeur de chaleur
US5690094A (en) * 1993-09-09 1997-11-25 Etzion Metal Works Gas flame kettle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1404490A (fr) * 1964-04-22 1965-07-02 Accessoire de protection pour matériel de camping
CH543265A (de) * 1971-08-24 1973-10-31 Kisag Ag Gasrechaud
GB1446895A (en) * 1973-10-20 1976-08-18 Hunt W C Cooking equipment plumbing connection
DE9101813U1 (de) * 1991-02-16 1991-06-13 Geffen, David, 8013 Haar Wärmvorrichtung
DE9106348U1 (de) * 1991-05-23 1991-08-01 Bierewirtz, Peter, Dipl.-Volksw., 2913 Apen Transportabler Holzkocher
US5527180A (en) 1993-07-09 1996-06-18 International Thermal Investments Ltd. Infrared burner
US5690094A (en) * 1993-09-09 1997-11-25 Etzion Metal Works Gas flame kettle
CA2143058A1 (fr) * 1995-02-21 1996-08-22 Edgar C. Robinson Bruleur polyvalent avec echangeur de chaleur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section PQ Week 9650, Derwent World Patents Index; Class Q73, AN 96-498195, XP002111264 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1096132A3 (fr) * 1999-10-28 2002-09-04 International Thermal Investments Ltd. Procédé et dispositif de vaporisation de carburant

Also Published As

Publication number Publication date
EP1071357A1 (fr) 2001-01-31
AU3134699A (en) 1999-11-01

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