WO1996033109A1

WO1996033109A1 - Oven produced of packing material and packing for production of the oven

Info

Publication number: WO1996033109A1
Application number: PCT/NO1996/000092
Authority: WO
Inventors: Paal Wendelbo
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-21
Filing date: 1996-04-19
Publication date: 1996-10-24
Anticipated expiration: 1997-10-21
Also published as: AU5517696A; NO952333D0; NO952333L; NO300516B1

Abstract

Stove, consisting of an outer shell part (1) and an inner shell part (11). In the outer part there are formed openings (28) near the bottom for the inflow of combustion air, and in the inner part there are formed openings (27, 28) near the bottom for the inflow of primary air and openings (25, 26) near the top and/or the mid-section for the inflow of secondary air. There is also at least one opening (21, 22) near the top of both the outer and the inner parts for the outflow of exhaust gas. The outer and inner parts are made of non-combustible packaging material, e.g., in the form of tin pails (1) or tin cans (11), which have been pre-stamped with marks (6-8, 15-18) to indicate where openings are to be made.

Description

OVEN PRODUCED OF PACKING MATERIAL AND PACKING FOR PRODUCTION OF THE OVEN

The present invention relates to a stove according to claim 1, and to a packaging apparatus, or container, according to claim 5.

In emergency areas or refugee camps there will naturally arise many problems. One of the difficulties that has proven to be major, at least after a period of time, relates to the heating and cooking of food. It has become apparent that the field stoves used by the military, among others, in various parts of the world do not function adequately in an emergency situation. These field stoves often comprise regulators, which generally have a tendency to break after a certain period of time. The stoves are often designed for a certain type of fuel, and function poorly or not at all for the combustion of, e.g., wood or other solid fuel, which may be of a quite varying character according to what is available in the emergency area.

Also, there is a problem in getting a sufficient number of stoves brought into the emergency area or refugee camp. The result is thus that the people must either eat food that has not been heated or cooked, or wait until they can gain access to a stove.

With the following invention, the objective is to provide both a stove capable of effectively burning almost any form of solid fuel, and a stove that may be brought into an emergency area/refugee camp in sufficiently large quantity without major difficulties.

The stove is distinguished by the features disclosed by the characterizing clause according to claim 1. To secure the possibility of bringing this type of stove into the area in sufficiently large number, we suggest the use of a packaging material (container) that is distinguished by the characterizing clause according to claims 5 and 8.

The stove/container will now be described in more detail with reference to the attached drawings, where:

Figure la - lc shows a first packaging material (container), which at the same time forms a first blank for the stove, while

Figure la shows the container seen from the side,

Figure lb shows the lid of the container, and

Figure lc shows the container seen from below,

Figure 2 shows a second packaging material (container), which at the same time forms a second blank for the stove, where

Figure 2a shows the container seen from the side, and

Figure 2b shows the container seen from below.

Figure 3 shows in cross-section a stove in accordance with the invention.

In Figure la there is shown a first packaging material, or container, in the form of a large tin pail 1. The pail 1 consists of a shell 2, a handle 3, a bottom 4 and a top 5. On the shell 2 of the pail there are impressed/etched marks 6 and 7, where marks 6 form a row of circles along the circum¬ ference at the top 5, and marks 7 form a row of angles along the circumference at the bottom 4. The pail 1 is preferably circular-cylindrical, as shown in Figure lc. On the top 5 of the pail a circular mark is etched, concentric with shell 2. In Figure lb the top 5 of pail 1 has been removed such that it forms a lid 8. The circular mark is indicated by reference numeral 9.

On shell 2 are formed circumferential ribs 10 to stiffen the shell 2.

In Figure 2a a second container is shown, in the form of a smaller pail or tin 11. By "smaller" we mean here that tin 11 is smaller than pail 1, but it is of course relatively large compared to the tins that may be purchased in Norwegian stores.

The tin 11 consists of a shell 12, a bottom 13 and a top 14. On shell 12 there are impressed/etched marks 15, 16 and 17, which appear as a row of circles along the circumference of shell 12, at the top, bottom and mid-section, respectively.

Tin 11 is also preferably circular-cylindrical, as is apparent from Figure 2b. Here, tin 11 is shown as viewed from underneath, such that the bottom 13 is visible. On the bottom 13 have been etched marks 18 in a central area. These marks are made up of a plurality of circles.

In Figure 3 is shown a stove, which has been constructed from pail 1 and tin 11. We will now explain how one can put together stove 20 according to Figure 3 with the aid of pail 1 and tin 11.

When an emergency station or a refugee camp receives pail 1 and tin 11, which preferentially contain preserved food products, the lid 8 is first removed from pail 1 in a practical manner, according to how the lid is fastened to the pail. A hole 21 is stamped out within circular mark 9. Within the circular marks 6 on shell 2 of pail 1 there are also stamped out holes 22. To facilitate the stamping there may, for example, be provided weakening- or break lines along the marks. Cuts are made along marks 7 to form tongues or tabs 23, which are bent inwards so that the points 24 of tabs 23 are oriented inwards into the interior of the pail 1. Now the outer part of stove 2 is ready.

From tin 11 the top 14 is removed in a practical manner. Holes 25, 26, 27 are stamped out within marks 15, 16 and 17. In the bottom of the tin a hole 28 is stamped out within marks 18. Now tin 11 is also ready to form the inner part of the stove 20.

Tin 11 is lowered down into pail 1 with its bottom 13 first, from the top 5 of pail 1. Tin 11 is brought all the way down to the bottom 13 of tin 11 and rests against tabs 23, which have been bent inwards into pail 1. Tabs 23 thus form a support for tin 11.

Material has been removed from the edge area of lid 8 of tin 11 so that lid 8 has a diameter smaller than the diameter of shell 2, but a diameter greater than the diameter of the shell 12 of tin 11. Lid 8 is placed down in pail 1, so that it rests on top of tin 11. The stove 20 is now ready for the insertion of fuel and the food preparation.

Stove 20 functions as follows: the fuel, e.g., in the form of wood, is lowered through hole 21 in lid 8 and down into tin 11, which forms the stove's combustion chamber. The fuel is ignited and air flows in through openings 28, which are formed by bending in the tabs 23. Primary air flows in through holes 28 in the bottom 23 of tin 11. Additional air also flows in through holes 27. Secondary air flows into the combustion chamber at two levels. The first level is made up of holes 26 and the second level is made up of holes 25. In this manner one attains nearly complete combustion and an extremely high temperature. The exhaust gases flow up through the hole 21. When a cooking vessel is put on top of the stove 20, this will cover the top of the stove in such a way that the exhaust gases have to flow out through the holes 22.

By means of the above, the inventor has thus managed to provide a stove which may be assembled on the spot with the aid of simple tools. The stove is very simple to use and basically requires no regulation. If one wishes, however, one may "turn down the heat" by making holes in the lid belonging to tin 11 (which has not yet been used for anything else), which holes would have a total open area smaller than that of hole 21. This lid (not shown) may then be placed on top of lid 8 to cover hole 21.

Claims

P a t e n t C l a i m s

1.

A stove, consisting of an outer shell part (1) and an inner shell part (11), where in the outer part there are formed openings (28) near the bottom for the inflow of combustion air, and where in the inner part there are formed openings (27, 28) near the bottom for the inflow of primary air and openings (25, 26) near the top and/or mid-section for inflow of secondary air, and at least one opening (21, 22) near the top of both the outer and the inner parts for the outflow of exhaust gas, c h a r a c t e r i z e d i n that the outer and the inner parts are made of non-combustible packaging material, e.g., in the form of a tin pail (1) or tin can (11), which have been pre-stamped with marks (6-8, 15-18) to indicate where openings are to be made.

2.

A stove according to claim 1, c h a r a c t e r i z e d i n that in the shell (2) of the outer part (1) near the bottom thereof there are formed openings (28) by means of tabs (23) being bent inwards into the interior of the outer part (1), which tabs form a support for the second part (11).

3.

A stove according to claim l or 2, c h a r a c t e r i z e d i n that in the shell (2) of the outer part near the top thereof there are formed openings (22) for the outflow of exhaust gas, and that the outer part (1) is open at the top and closed at the bottom.

4.

A stove according to claims 1, 2 and 3, c h a r a c t e r i z e d i n that in the bottom (13) of the inner part (11) and/or the shell (12) of the inner part (11) there are formed openings (28) for the inflow of primary air, that in the shell (12) there are formed openings (25) near the top for the inflow of secondary air, that the inner part (11) is open at the top, that a lid (8) is provided on the top of the inner part (11), extending all the way out to the interior surface of the outer part (1), and that the lid (8) is provided with at least one opening (21) for the outflow of exhaust gas from the inner part (11).

5.

Packaging material in the form of a cylindrical container (1) of non-combustible material , intended to encase an inner container (11), c h a r a c t e r i z e d i n that the encasing container (1) is pre-stamped with marks (6-8, 15-18) to indicate where holes are to be made for gas-conducting openings in a part for the fabrication of a stove (20).

6.

Packaging material according to claim 5, c h a r a c t e r i z e d i n that angles (7) or the like are marked on the shell (2) of the container (1) at the lower end (4) thereof, for the formation of tabs (23) that may be bent inwards.

7.

Packaging material according to claim 6, c h a r a c t e r i z e d i n that the container (1) has marks (6) on the shell (2) at the upper end (5) thereof for stamping out holes, and that it has marks (9) on the top surface thereof for stamping out at least one opening (21).

8.

Packaging material in the form of a cylindrical container (11) of non-combustible material, intended to be encased by an outer container (1), c h a r a c t e r i z e d i n that the encasing container (11) is provided with marks (17, 18) on the bottom surface and/or on the shell (12) thereof near the bottom (13) for stamping out holes (27, 28) which may function as gas-conducting openings in a stove part.

9.

Packaging material according to claim 8, c h a r a c t e r i z e d i n that the container (11) near the top (14) thereof has marks (15) on the shell (12) for stamping out holes (25) and optionally marks (16) on the mid- section of the shell (12) for stamping out holes (26).

10.

Packaging material according to any one of the claims 5 - 9, c h a r a c t e r i z e d i n that weakening- or break lines, or the like, are made in the marks.