GB2536575A

GB2536575A - Oven

Info

Publication number: GB2536575A
Application number: GB1604732.6A
Authority: GB
Inventors: Ashby Martin
Original assignee: Esse Eng Ltd
Current assignee: Esse Eng Ltd
Priority date: 2015-03-19
Filing date: 2016-03-21
Publication date: 2016-09-21
Anticipated expiration: 2036-03-21
Also published as: GB201504692D0; GB2536575B; GB201604732D0

Abstract

A device 1 for cooking food comprises: a combustion assembly 41 (Fig. 5), 42 (Fig. 5), 44 arranged to provide heat to the device 1 by combustion of charcoal, and an exhaust assembly 30 configured to vent exhaust gases produced by the combustion into a room in which the device 1 is located, wherein the exhaust assembly 30 comprises a catalytic converter 33 (Fig. 4) configured to filter the exhaust gases so as to reduce the amount of harmful gases vented into the room. Optionally, the device has a main body sub-divided into upper and lower sections forming upper and lower ovens 110a and 110b (Fig. 6). The exhaust assembly 30, could be flueless, and the main body could be adapted to be positioned under a typical cooker hood provided in a kitchen.

Description

This invention relates to an oven, particularly, but not limited to, a charcoal oven.

Ovens which use charcoal as a fuel can reach temperatures of around 500°C -600°C, which is much hotter than typical gas or wood fuelled ovens. This high temperature has the advantage of cooking food very quickly. In addition, the high temp also imparts a distinctive flavour to the food.

However, a number of problems arise with such ovens. Firstly, the components for such ovens must be manufactured to withstand repeated use at these high temperature conditions. Furthermore, unlike typical cooking appliances which can be easily turned off, charcoal continues to smoulder and produce poisonous carbon monoxide for many hours after ignition. Consequently, charcoal ovens situated indoors must include effective systems for ensuring the continued production of carbon monoxide does not result in a poisonous atmosphere.

One solution to such a problem is to provide a flue for venting the gases to the exterior of the building. However, there has recently been a desire to employ charcoal ovens in commercial restaurant kitchens. Such kitchens have integrated extraction systems which extract the dirty air associated with conventional cooking apparatuses, such as gas stoves and the like, and vent it outdoors. However, many of these extraction systems are designed to automatically activate when the cooking apparatus is in use, for example when gas is supplied to a gas stove. Consequently, they are incompatible with charcoal ovens which are not connected to the automated extraction system, and which produce potentially poisonous emissions for a considerable length of time after cooking. In situations where the extraction system is not automated, one must ensure the extraction system is left on for a sufficient amount of time after the cessation of cooking so that the continually-produced gases are adequately vented.

It is an aim of the present invention to address at least some of the above difficulties, or other difficulties which will be appreciated from the description below.

According to the present invention there is provided an apparatus and method as set forth in the appended claims. Other features of the invention will be apparent from the dependent claims, and the description which follows.

According to an aspect of the present invention there is provided a device for cooking food comprising: a combustion assembly arranged to provide heat to the device by combustion of charcoal, and an exhaust assembly configured to vent gases produced by the combustion into a room in which the device is located, wherein the exhaust assembly comprises a catalytic converter configured to filter the gases so as to reduce the amount of harmful gases vented into the room.

Preferably, the device comprises a main body which is substantially cuboid in shape, wherein the combustion assembly is disposed within the main body.

Advantageously, in use, combustion gases pass through the main body to flavour food being cooked therein.

Advantageously, the dimensions of the main body are such that the device may be easily positioned under a typical cooker hood provided in a commercial kitchen.

Preferably, the device comprises a door aperture formed in a front face of the main body, so as to allow access to an interior of the device and a door formed to cover the door aperture.

Preferably, the door is hinged along a bottom edge thereof.

Preferably, the device comprises a door hinge assembly comprising: a pair of hinging apertures, each formed on a respective vertical side wall of the door; a pair of hinge angles, provided on the front face below the door aperture, each hinge angle having a hinge angle aperture formed therein at a positions corresponding to its respective hinging aperture; a substantially cylindrical hinge bar arranged so as to pass through the hinging apertures and the hinge angles, thereby allowing the door to move from a substantially vertical closed position to a substantially horizontal open position, and a pair hinge bosses, each disposed at a respective end of the hinge bar, so as to retain the hinge bar in position.

Preferably, the device comprises a door retaining assembly so as to retain the door in the closed position.

Preferably, the device comprises a pair of vertical sealing bars and a pair of horizontal sealing bars, disposed proximate to the respective vertical and horizontal edges of the door aperture Preferably, the door comprises an outer skin and an inner door assembly.

Preferably, a space formed between the outer skin and the inner door assembly is filled with a fireproof material.

Preferably, the fireproof material is vermiculite.

Preferably, the fireproof material comprises at least one vermiculite firebrick.

Preferably, a fat trap is disposed below the door aperture, so as to catch fat which may drip from food which is cooking in the device. Preferably, the fat trap is a trough which protrudes horizontally from the front face along the width of the door.

Preferably, an exhaust aperture is formed in an upper surface of the main body at a position corresponding to the exhaust assembly, thereby allowing combustion gases to move from the main body to the exhaust assembly.

The main body may be sub-divided into upper and lower sections, forming upper and lower ovens. The upper and lower sections may have door assemblies as described above. The upper section may have a door assembly as described above, which door assembly may be a double door with left and right side hinges instead of a bottom hinge.

The exhaust assembly may be located at an upper part of the lower section, preferably above an exhaust aperture as described above.

The upper section may have inner and outer walls, adapted to receive the combustion gases from the exhaust assembly and direct the combustion gases into a cavity between the inner and outer walls. A lower outer wall of the upper section may incorporate an opening adapted to receive the exhaust gases from the exhaust assembly. An upper wall of the upper section may incorporate an opening adapted to vent the exhaust gases.

Advantageously, a lower inner wall of the upper section located above the opening in the lower outer wall of the upper section functions as a spark arrester to sparks exiting the exhaust assembly. Additionally, heat from the exhaust gases from the exhaust assembly is used to heat an interior space of the upper section.

Preferably, the exhaust assembly is flueless.

Preferably, the catalytic converter is configured to reduce the presence of carbon monoxide in the gases, preferably from approximately 7,500 parts per million to preferably approximately parts per million, more preferably approximately 150 parts per million, more preferably approximately 100 parts per million, more preferably approximately 75 parts per million.

Preferably, the exhaust assembly comprises a cowl which covers the exhaust assembly and is configured to ensure that gases flow out of, and not in to, the main body via the exhaust assembly.

Preferably, the exhaust assembly comprises a down draught diverter configured to divert gases which may otherwise enter the main body to the sides of the assembly.

Preferably, the exhaust assembly comprises a spark arrestor configured to prevent emission of flammable material through the exhaust assembly.

Preferably, the main body comprises a firebox which forms the internal structure of the main body.

Preferably, the firebox further comprises an exhaust assembly support portion, which protrudes from a top of the firebox so as to support the exhaust assembly.

Preferably the exhaust assembly support portion is formed around a periphery of a firebox exhaust aperture, so as to allow combustion gases to move from the main body to the exhaust assembly.

Preferably, the exhaust assembly support portion is formed at a position corresponding to the exhaust aperture of the upper surface, so that, once assembled, the support portion protrudes from the upper surface of the main body.

Preferably, the device comprises at least one firebrick are disposed inside the main body at at least one position corresponding to at least one face of the main body.

Preferably, the at least one firebrick comprises a front firebrick is disposed at a position corresponding to the front face, below the aperture. Preferably, the at least one firebrick comprises two side firebricks are disposed at each respective side of the main body. Preferably, the at least one firebrick comprises two rear firebricks are disposed at a rear face of the main body. Preferably, the at least one firebrick comprises an upper firebrick is disposed at the upper surface. Preferably, the upper firebrick comprises an aperture at a position corresponding to the exhaust aperture adapted to allow the support portion to pass therethrough. Preferably, the or each firebrick retained in between the firebox and the main body.

Preferably, the combustion assembly is provided towards the bottom of the main body.

Preferably, the combustion assembly comprises a fuel retaining means adapted to retain the charcoal. Preferably, the fuel retaining means comprises at least one grate.

Preferably, the combustion assembly comprises a support assembly, the support assembly comprising a plurality of braces secured to either the bottom or side of the firebox, so as to hold the fuel retaining means in position.

Preferably, the combustion assembly further comprises an ash pan removably mounted below the fuel retaining means.

Preferably, an ash pan aperture is provided in the front face of the main body, wherein the ash pan is mounted through the ash pan aperture.

Preferably, the device comprises a plurality of shelves operable to hold food to be cooked by rising heat from the charcoal. Preferably, the shelves are disposed above the combustion assembly.

Preferably, the device comprises a pair of runner assemblies disposed on each interior side walls of the main body, wherein the runner assemblies are configured to support each of the plurality of shelves. Preferably, the shelves 50 are removably mounted on the runner assembly.

For a better understanding of the invention, and to show how embodiments of the same may be carried into effect, reference will now be made, by way of example, to the accompanying diagrammatic drawings in which: Figure 1 is a front plan view of a charcoal oven; Figure 2 is a side plan view of the charcoal oven; Figure 3 is a perspective view of the charcoal oven; Figure 4 is an exploded perspective view of the charcoal oven; Figure 5 is an exploded perspective view of a main body of the charcoal oven; Figure 6 is a schematic perspective view of a second embodiment of charcoal oven; Figure 7 is a schematic front view of the embodiment of Figure 6; Figure 8 is a schematic side view of the embodiment of Figure 6, Figure 9 is a schematic exploded view of a lower part of the second embodiment; and Figure 10 is a schematic exploded vierw of an upper part of the second embodiment..

Figures 1 to 5 show a charcoal oven 1 in accordance with an example embodiment of the invention. The charcoal oven 1 comprises a main body 10, a door 20 and an exhaust assembly 30.

The main body 10 is substantially cuboid in shape, and comprises a front face 11, an upper surface 12, a base 13, a rear face 14 and sides 15. The dimensions of the main body 10 are such that the oven 1 may be easily positioned under a typical cooker hood provided in a commercial kitchen. In one example, the main body 10 is manufactured from a metal, such as stainless steel, but other metals would also be adequate.

An aperture 16 is formed in the front face 11 of main body 10, so as to allow access to the interior of the oven 1. An exhaust aperture 12b is formed in the upper surface 12, thereby allowing combustion gases to move from the main body 10 to the exhaust assembly 30.

As best seen in Figure 5, the main body 10 comprises a firebox 17 which forms the internal structure of the main body 10. The firebox 17 has a front wall 17a, a rear wall 17b, top 17c and a base 17d. An aperture 17e is formed in the front wall 17a at a position corresponding to the aperture 16 in front face 11. The main body 10 is formed by attaching the panels which comprise the front face 11, upper surface 12, base 13 and sides 15 to the respective walls of the firebox 17.

The firebox 17 further comprises an exhaust assembly support portion 17f, which protrudes from the top 17c of the firebox 17 around a periphery of an aperture so as to allow combustion gases to move from the main body 10 to the exhaust assembly 30. The support portion 17f is formed at a position corresponding to the exhaust aperture 12b of the upper surface, so that, once assembled, the support portion 17f protrudes from the upper surface 12 of the main body 10.

As best seen in Figure 5, a plurality of firebricks 11 a-15a are disposed inside the main body 10 at positions corresponding to the faces of the main body 10. Particularly, a front firebrick 11 a is disposed at a position corresponding to the front face 11, below the aperture 16. Side firebricks 15a are disposed at each respective side 15 of the main body 10. Two rear fire bricks 14a are disposed at the rear face 14. An upper firebrick 12a is disposed at the upper surface 12. The upper firebrick 12a comprises an aperture at a position corresponding to the exhaust aperture 12b, thereby allowing combustion gases to move from the main body 10 to the exhaust assembly 30 and allowing the support portion 17f to pass therethrough. The firebricks 11a-15a serve to protect the main body 10 from the intense heat generated within the oven 1, and also serve to insulate the oven 1 so as to better retain the heat generated therein.

In one example, the plurality of firebricks 11a-15a are disposed between the firebox 17 and the each corresponding face of the main body 10, and are held in place by virtue of their abutment to both the firebox 17 and the main body 10. In further examples, retaining means may be provided to secure each firebrick to its respective face. The retaining means may take the form of a substantially vertical bar 18, attached to the top and bottom of the main body 10. The bar 18 may also serve the purpose of bracing the main body 10 so as to provide extra strength.

The door 20 is formed to cover the aperture 16. The door 20 is hinged along a bottom edge 21 thereof, so as to open and allow access to the interior of the oven 1. In further examples, the door 20 may be hinged along a side edge thereof. Alternatively, a pair of doors 20 may be instead provided.

The door hinge assembly 22 is best seen in Figure 4. Hinging apertures 23a are formed on the two vertical side walls 23 of the door 20, and hinge angles 22c are provided on the front face 11 below the aperture 16, with apertures formed therein at positions corresponding to the hinging apertures 23a. A substantially cylindrical hinge bar 22a is arranged so as to pass through the hinging apertures 23 and the hinge angles 22c, thereby allowing the door to move from a substantially vertical closed position to a substantially horizontal open position. The hinge bar 22a is retained in position by hinge bosses 22b disposed at either end thereof.

In one example, a door retaining assembly 27 may be provided to retain the door 20 in the closed position. The door 20 closes by engaging a spring mechanism when moved towards a closed position and is held closed by tension from the spring mechanism. Spring tension also works as a damper when the door 20 is being opened or closed.

The door 20 further comprises a handle 28 disposed on an outer surface thereof The handle 28 is configured to receive a force from a user to move the door between the open and closed positions.

A pair of vertical sealing bars 24a and a pair of horizontal sealing bars 24b may be disposed proximate to the respective vertical and horizontal edges of the aperture 16. The sealing bars 24 form a seal between the door 20 and the main body 10 when the door 20 is in the closed position. The bars 24 ensure a tight seal, preventing the escape of odours, combustion gases and heat.

In one example, the door 20 is hollow, and comprises an outer skin 26a and an inner door assembly 26b. The space formed between the outer skin 26a and the inner door assembly 26b is filled with a suitable fireproof material. In one example, the fireproof material is vermiculite. Particularly, a pair of vermiculite firebricks 26c are disposed in between the outer skin 26a and the inner door assembly 26b. It will be understood that a single firebrick could be instead retained in between the outer skin 26a and the inner door assembly 26b. The firebricks 26c may be secured within the door 20 by brick plates 26d A fat trap 25 may be disposed below the aperture 16, so as to catch any fat which may drip from food which is cooking in the oven 1. In one example, the fat trap 25 is a trough which protrudes horizontally from the front face 11 along the width of the door 20.

The exhaust assembly 30 is a flueless exhaust system disposed on an upper surface 12 of the main body 10, and further comprises a catalytic converter (not shown), which filters harmful chemicals, including carbon monoxide, from combustion gases. In one example, the catalytic converter reduces the presence of carbon monoxide in the gases from approximately 7,500 parts per million to approximately 68 parts per million.

The exhaust assembly 30 is disposed at a position corresponding to an aperture 12b formed in the upper surface 12 of the main body 10, thereby allowing the combustion gases to move from the main body 10 to the exhaust assembly 30. The exhaust assembly 30 is mounted to the exhaust support portion 17f of the firebox 17, which is arranged so as to protrude from the main body 10.

The exhaust assembly 30 comprises a cowl 31, a down draught diverter 32 and a spark arrestor/catalytic converter brick 33. The cowl 31 covers the exhaust assembly 30 and is configured to ensure that gases flow out of, and not in to, the main body 10 via the exhaust assembly 30. The down draught diverter 32 diverts any gases which may otherwise enter the main body 10 to the sides of the aperture 12b, thereby preventing them entering the main body 10. The spark arrestor 33 is configured to prevent the emission of flammable material through the exhaust assembly 30.

Turning now to the interior of the oven 1, a combustion assembly is provided towards the bottom of the main body 10. The combustion assembly is arranged to provide heat to the oven, by means of the combustion of charcoal. The combustion assembly comprises a fuel retaining means 41, a fuel retaining means support assembly 42 and an ash pan 43.

The fuel retaining means 41 holds the charcoal which is the fuel for the oven 1. In one example, the fuel retaining means 41 comprises at least one grate. Holes of a suitable proportion are formed in the retaining means 41, so that fully combusted fuel may pass therethrough, but uncombusted fuel may not.

The support assembly 42 comprises a plurality of braces secured to the bottom and sides of the firebox 17, which hold the fuel retaining means 41 in position.

The ash pan 43 is a substantially tray-shaped device which is removably mounted below the fuel retaining means 41. The ash pan 43 collects the combusted fuel which has passed through the holes in the fuel retaining means 41. In one example, an ash pan aperture 18 is provided in the front face 11 of the main body 10, so that the ash pan 43 may be easily removed from the main body 10 by a user. In this way, the fully combusted waste fuel may be easily disposed of. A handle 44 is disposed on the exterior end of the ash pan 43, so as to protrude from the ash pan aperture 18 so that a user may easily remove the ash pan 43 by pulling the handle 44.

A plurality of shelves 50 are disposed above the combustion assembly 40. The shelves 50 hold the food which is to be cooked in the oven 1. The position of the shelves 50 above the combustion assembly 40 means that the rising heat from the burning charcoal held in the combustion assembly 40 cooks the food held on the shelves 50.

In one example, a runner assembly 51 is provided one each of the interior side walls of the main body 10, so as to support each of the plurality of shelves 50. The shelves 50 are removably mounted on the runner assembly 51 so that they may be removed for cleaning and maintenance.

In use, the oven 1 is placed under a cooker hood (not shown) or similar dirty air extraction means, the like of which is generally found in a commercial kitchen.

A suitable amount of charcoal is placed on the fuel retaining means 41, and set alight. After a period of time, the heat generated by the burning charcoal reaches a suitable temperature for cooking. At such a time, the door 20 is opened and food is placed on the shelves 50 to be cooked. Once the food has been inserted, the door 20 is closed to retain heat and prevent the escape of combustion gases and odours.

The combustion gases produced by the burning charcoal rise through the oven 1, pass through the aperture 12b in the upper surface 12 of the main body 10 and into the exhaust assembly 30. The combustion gases are filtered by the catalytic converter provided in the exhaust assembly 30, so as to remove harmful chemicals emitted. Because the oven 1 filters the gases, the need for a flued system which transports the gases out of the kitchen is obviated. Instead, the filtered gases can pass out of the top of the exhaust assembly 30 without contaminating the room in which the oven is placed, and are then subsequently extracted from the kitchen by a conventional cooker hood or extraction means.

Even after the cessation of cooking operations, the waste charcoal continues to smoulder for many hours. The catalytic converter in the exhaust assembly continues to filter the exhaust gases, thereby prevent the emission of harmful chemicals such as carbon monoxide.

Advantageously, the above-described oven does not require a dedicated extraction system in order to be safely used in a commercial kitchen. The catalytic converter means that no special adaptation is required to connect the oven to standard air extraction systems. Furthermore, the dangers associated with continued production of carbon monoxide and other harmful gases after the cessation of cooking are avoided by the use of the catalytic converter.

Furthermore, the construction and materials of the oven allow it to withstand the extreme temperatures associated with cooking over charcoal.

A second embodiment of charcoal oven 101 is shown in Figures 7 to 10 in accordance with an example embodiment of the invention. The charcoal oven 101 has many features in common with the first embodiment and like parts are given the same references numerals and function in much the same way. In the second embodiment the main body is split in to a lower section 110a and an upper section 110b. The lower section 110a is comparable in function and features to the main body 110 of the first embodiment, with the upper section acing as a warming oven that is heated by exhaust gases from the lower section 110a. The lower section 110a comprises a door 20 and an exhaust assembly consisting of the exhaust aperture 12b formed in the upper surface 12 of the lower section 110a and two catalytic converter bricks 33..

The lower section 110a is substantially cuboid in shape, and comprises a front face 11, an upper surface 12, a base 13, a rear face 14 and sides 15. The dimensions of the main body 10 are such that the oven 1 may be easily positioned under a typical cooker hood provided in a commercial kitchen. In one example, the lower section 110a is manufactured from a metal, such as stainless steel, but other metals would also be adequate. Other features of the lower section are as described above for the main body of the first embodiment.

The exhaust assembly leads into an aperture 120 in a lower outer wall 122a of the upper section 110b. The upper section 110b has inner and outer walls forming a cavity therebetween. The lower outer wall 122a has a corresponding lower inner wall 122b. Fire bricks 123 are located between the lower outer wall 122a and lower inner wall 122b. The upper section 110b has inner side walls 124b and outer side walls 124a, an inner rear wall (not shown) and an outer rear wall 126a, and an inner top plate 128b and an outer top plate 128a. Combustion gases pass around a cavity 130 formed by the lower inner wall 122b, inner side walls 124b, inner rear wall and inner top plate 128b and exit from the outer top plate 128a through a slotted aperture 128c. The gases are then extracted from the room by a separate extraction system..

The cavity 130 can include shelves mounted on rails 132 secured to the side walls 124b.

A door assembly 134 is secured to the front of the upper section 110b. The door assembly 134 may include two doors 136a, 136b hinged at respective left and right side edges.

In use, the oven of the second embodiment is used in the same way as the first embodiment.

However, the hot combustion gases exiting the lower section 110a are channelled out of the lower section 110a through the aperture 120 in the lower outer wall 122a. Any sparks in the combustion gases will hit the lower face of the fire bricks 123 and be arrested; thereby usefully using the fire bricks 123 as a spark arrester and heat sink. The combustion gases then heat the cavity 130, which will also cool the combustion gases, to thereby make use of the heat.

The cavity 130 can be used for cooking/heating.

The provision of two spark arresters (the catalytic converter bricks 33 and the fire bricks 123 provides additional safety. The extraction of heat from the combustion gases is also beneficial in improving efficiency and reducing the amount of heat emitted into the room Attention is directed to all papers and documents which are filed concurrently with or previous to this specification in connection with this application and which are open to public inspection with this specification, and the contents of all such papers and documents are incorporated herein by reference.

All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.

Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.

The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

Claims

CLAIMS1. A device for cooking food comprises: a combustion assembly arranged to provide heat to the device by combustion of charcoal, and an exhaust assembly configured to vent exhaust gases produced by the combustion into a room in which the device is located, wherein the exhaust assembly comprises a catalytic converter configured to filter the exhaust gases so as to reduce the amount of harmful gases vented into the room.
2. The device of claim 1, which comprises a main body, wherein the combustion assembly is disposed within the main body.
3. The device of claim 1 or claim 2, in which the main body is adapted to be positioned under a typical cooker hood provided in a commercial kitchen.
4. The device of any preceding claim, which comprises a door aperture formed in a front face of the main body and a door formed to cover the door aperture.
5. The device of claim 4 comprising a door hinge assembly having: a pair of hinging apertures, each formed on a respective vertical side wall of the door; a pair of hinge angles, provided on the front face below the door aperture, each hinge angle having a hinge angle aperture formed therein at a positions corresponding to its respective hinging aperture; a substantially cylindrical hinge bar arranged so as to pass through the hinging apertures and the hinge angles, thereby allowing the door to move from a substantially vertical closed position to a substantially horizontal open position, and a pair hinge bosses, each disposed at a respective end of the hinge bar, so as to retain the hinge bar in position.
6. The device of claim 4 or claim 5 having, a space formed between an outer skin and an inner door assembly, said space being filled with a fireproof material.
7 The device of any one of claims 4 to 6, further comprising a fat trap disposed below the door aperture.
8. The device of any preceding claim, further comprising an exhaust aperture formed in an upper surface of the main body at a position corresponding to the exhaust assembly, thereby allowing combustion gases to move from the main body to the exhaust assembly.
9. The device of any preceding claim, in which the main body is sub-divided into upper and lower sections, forming upper and lower ovens.
10. The device of claim 9, in which the exhaust assembly is located at an upper part of the lower section, above an exhaust aperture thereof.
11. The device of claim 9 or claim 10, in which the upper section has inner and outer walls, adapted to receive the combustion gases from the exhaust assembly and direct the combustion gases into a cavity between the inner and outer walls.
12. The device of claim 11, in which an upper wall of the upper section incorporates an opening adapted to vent the exhaust gases.
13. The device of any preceding claim, in which, the exhaust assembly is flueless.
14. The device of any preceding claim, in which the catalytic converter is configured to reduce the presence of carbon monoxide in the exhaust gases, from approximately 7,500 parts per million to approximately 200 parts per million,.
15. The device of any preceding claim, in which the exhaust assembly comprises a spark arrestor configured to prevent emission of flammable material through the exhaust assembly.
16. The device of any preceding claim, in which, the device comprises at least one firebrick disposed inside the main body at at least one position corresponding to at least one face of the main body.
17. The device of any preceding claim, in which the combustion assembly comprises a fuel retaining means adapted to retain the charcoal.