CN214949209U

CN214949209U - Outdoor stove

Info

Publication number: CN214949209U
Application number: CN202120785830.5U
Authority: CN
Inventors: C·詹金斯
Original assignee: Bond Manufacturing Co Inc
Current assignee: Bond Manufacturing Co Inc
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-11-30
Anticipated expiration: 2031-04-16

Abstract

The application discloses outdoor stove includes: a base for placing on a ground, a plurality of through holes formed in the base and a lower thermal barrier disposed in the base; a housing on the base, the housing including an upper thermal barrier as a bottom wall thereof and sidewalls for defining a top opening; and a firebox surrounded by the housing, a space through which air flows is defined between the bottom wall of the firebox and the bottom wall of the housing, and between the side wall of the firebox and the side wall of the housing, the bottom wall of the firebox, the upper thermal barrier, and the lower thermal barrier being spaced from each other, a plurality of vent holes being formed in the bottom wall of the firebox, a first gap around the top opening being defined between the side wall of the firebox and the side wall of the housing in fluid communication with the space, a second gap being defined between the upper thermal barrier and the side wall of the housing in fluid communication with the space, and an air inlet being defined between the lower thermal barrier and the base in fluid communication with the space.

Description

Outdoor stove

Technical Field

The present application relates generally to outdoor fires, in particular portable outdoor fires.

Background

Due to the needs of camping, heating, barbecuing, family dinner, and the like, people usually arrange a stove outdoors and put solid combustible materials such as charcoal or firewood into the stove for combustion and heat generation. Generally, if the solid combustible materials are not sufficiently combusted, a large amount of smoke is generated, which results in low energy utilization of the solid combustible materials and smoking discomfort for users. Furthermore, the burners are usually in direct contact with the ground at the bottom, and a large amount of heat is directed to the ground during combustion, which can cause distortion and/or discoloration of the ground during baking if the temperature is too high. Therefore, when the furnace is removed after use, it is difficult to restore the ground surface.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application aims to provide a novel outdoor fire which enables solid combustible materials to be more fully combusted therein, to produce less smoke, and at the same time to be suitably heat insulated for the floor on which it is located when in operation.

According to an aspect of the application there is provided an outdoor fire comprising:

a base for placement on a ground surface, a plurality of through holes formed in the base and a lower thermal barrier disposed in the base;

a housing on the base, the housing including an upper thermal barrier as a bottom wall thereof and sidewalls for defining a top opening; and

a firebox surrounded by the housing, a space defined between the bottom wall of the firebox and the bottom wall of the housing, the side walls of the firebox and the side walls of the housing through which air flows, the bottom wall of the firebox, the upper thermal barrier and the lower thermal barrier being spaced from one another, a plurality of vent holes formed in the bottom wall of the firebox, a first gap defined between the side walls of the firebox and the side walls of the housing around the top opening in fluid communication with the space, a second gap defined between the upper thermal barrier and the side walls of the housing in fluid communication with the space, and an air inlet defined between the lower thermal barrier and the base in fluid communication with the space. Therefore, air for combustion can enter the fire pan through different routes, wherein the air entering from the first gap can be mixed with smoke generated in the fire pan above after being preheated, so that combustible particles which are not fully combusted in the smoke are further combusted, the combustion efficiency is improved, and the smoke generation is reduced. In addition, the design of upper and lower heat barrier can ensure that the heat that the burning produced can almost be stopped completely and can't reach ground, and then can ensure that outdoor stove uses the back ground can not be because of high temperature impaired.

Optionally, the outdoor fire is configured such that air for combustion can enter the space at least first via the air inlet, and a portion of the air entering the space can enter a combustion region surrounded by the firebox via the air vent of the firebox, and another portion can enter the combustion region via the first gap. In this way, the air entering the fire pan from below for combustion can be preheated before entering, thereby improving the combustion efficiency of the combustible.

Optionally, when the base of the outdoor fire is placed on the ground, the second gap and the air inlet do not have projected areas which overlap one another, viewed in a plane perpendicular to the direction of gravity. In this way, the ashes produced by the combustion do not contaminate the ground by falling directly from the base of the bowl and then from the second gap, since the ashes that eventually fall from the second gap are also blocked by the lower thermal barrier.

Optionally, the base includes a peripheral wall having a plurality of circumferentially evenly spaced through holes formed therein, the lower thermal barrier is located above the plurality of through holes, and the lower thermal barrier is a metal disc having a central opening formed therein, and the air inlet includes the plurality of through holes and the central opening. The lower thermal barrier is located above all the through holes, in particular above the uppermost edge of the uppermost through hole, which ensures that any air entering the space through the central opening for combustion first passes through the through holes of the base, while at the same time avoiding that ashes falling out through the second gap will fall out through the through holes.

Optionally, the housing is supported on the base via the upper thermal barrier.

Optionally, the upper thermal barrier supports the bottom wall of the firebox only via a plurality of firebox brackets removably connected thereto.

Optionally, the lower thermal barrier is supported in the base via a plurality of rests, the plurality of rests being different from the plurality of firebox brackets.

Optionally, the upper thermal barrier is a metal disc, the second gap being formed only between a periphery of the metal disc and a bottom edge of the side wall of the housing.

Optionally, a plurality of tabs extend radially outwardly from a periphery of the metal plate, the side wall of the housing having a plurality of mounting lugs extending radially inwardly on a bottom edge thereof, one of the plurality of tabs being secured together with a respective one of the plurality of mounting lugs by a threaded fastener via a respective one of the plurality of cone mounts.

Optionally, a plurality of spacers are arranged on the bottom wall of the firebox in the interior region of the firebox for containing solid combustible matter. The existence of isolation frame can be ensured when solid combustible substance piles up in the fire pan, can not influence the smooth and easy passing through of the air that is used for carrying out the burning because of blockking the air vent in the fire pan diapire to avoid the insufficient combustion consequence that causes of air supply.

Optionally, the plurality of vent holes are formed in the bottom wall of the firebox in groups such that each group of vent holes is covered by each respective isolation frame in a manner that does not impede the egress of air through the vent holes. Because each vent hole is protected by a corresponding isolation frame, the phenomenon of insufficient air supply caused by blocking the vent holes by solid combustible materials can be almost completely avoided.

Optionally, the casing includes a rim formed on top of the side wall of the casing and a rim extending parallel to the side wall of the casing from a radially innermost side of the rim, and the first gap is formed between the rim and a top edge of the side wall of the bowl.

Optionally, the first gap is configured such that air for combustion enters the interior region of the bowl for containing solid combustible material from above after flowing through the air for preheating. In this way, the smoke rising in the fire pan due to the combustion of the solid combustible can just merge with the air which is discharged through the first gap and preheated beforehand, thereby increasing the likelihood of further combustion of the particulate matter which is not sufficiently combusted in the smoke.

Preferably, the top opening is defined by the rim of the flange and has a diameter less than a diameter of the firebox. In this way, the preheated air discharged from the first gap is first discharged downward as much as possible, and the preheated air is merged with the smoke generated by combustion above the inner region of the bowl as much as possible, thereby increasing the possibility of the particulate matter insufficiently combusted in the smoke being re-combusted.

Optionally, the plurality of groups of vent holes are evenly spaced in the circumferential direction, each isolation frame has a V-shaped cross section, and is arranged on the bottom wall of the fire pan in a manner that two side wings of the V shape contact the bottom wall of the fire pan.

Optionally, at least one aperture is formed in each of the two flanks of the V-shape.

Optionally, a fire pan holder is provided on a side wall of the fire pan to contact the housing to define the first gap.

Optionally, the base is annular and stands on the ground with one edge of the annulus.

Adopt the above-mentioned technical means of this application, can ensure that outdoor stove is in the in-process of using, ground can not be because of the too much heat that comes from the stove and impaired. In addition, the solid combustible in the furnace can be more fully combusted, and the utilization efficiency of the solid combustible is improved. In addition, due to the design of the double heat barrier members, the ash generated by combustion can be ensured not to directly fall from the lower part of the outdoor stove, and further the influence on the attractiveness of the environment is avoided.

Drawings

The principles and aspects of the present application will be more fully understood from the following detailed description, taken in conjunction with the accompanying drawings. It is noted that the drawings may not be to scale for clarity of illustration and will not detract from the understanding of the present application. In the drawings:

figure 1 is a perspective view schematically illustrating a fire according to one embodiment of the present application;

figure 2 is an exploded view schematically showing the fire as shown in figure 1;

figure 3 is a top view schematically illustrating a fire according to an embodiment of the present application;

figure 4 is a cross-sectional view schematically illustrating a fire according to an embodiment of the present application.

Detailed Description

In the various figures of the present application, features that are structurally identical or functionally similar are denoted by the same reference numerals.

Figure 1 is a perspective view schematically illustrating a fire 100 according to one embodiment of the present application. It is noted that the fire 100 of the present application may be an outdoor fire, particularly a portable outdoor fire. The term "portable" means that the fire of the present application can be removed and/or moved as required, particularly outdoors.

As shown in fig. 1, the fire 100 is generally cylindrical, or any other suitable shape. The fire 100 has a base 110 and a housing 120 located on the base 110. It will be clear to those skilled in the art that in the context of the present application, references to directional terms such as "above" or "below" or "beneath" with respect to a feature of the fire 100 may refer to above or below the feature when the fire 100 is normally resting on the ground, as viewed in the direction of gravity relative to other features. The fire 100 also has a firebox 130 surrounded by the housing 120. As shown in fig. 2, the firebox 130 may also be generally cylindrical in shape. Of course, it should be clear that a cylindrical shape is only schematically used in the shown embodiment, and that any other suitable shape, such as a cubical shape, may be used in the solution of the present application.

The fire pan 130 has a hollow interior region for holding solid combustible materials such as charcoal, firewood, etc. that can be ignited to generate heat. The firebox 130 may be integrally formed of metal and has a cylindrical side wall 131 and a bottom wall 132 such that the cylindrical side wall 131 is open at the top for placement of solid combustible materials. Thus, the side wall 131 and the bottom wall 132 together define the aforementioned interior region of the firebox 130. Further, a plurality of vent holes 133 are formed in the bottom wall 132 of the firebox 130. In the illustrated embodiment, the plurality of vent holes 133 are formed in the bottom wall 132 in four groups distributed radially outward from the center of the bottom wall 132, each group of vent holes 133 may be, for example, in a double row arrangement of vent holes, and the groups of vent holes are evenly spaced from each other in the circumferential direction. The number of groups of ventilation apertures 133 is here only schematically 4, it being clear to the skilled person that more or fewer groups of ventilation apertures 133 are possible, and that the number of ventilation apertures 133 in each group may also be varied as desired.

The same number of spacers 134 are provided corresponding to the number of the groups of the vent holes 133. For example, in the illustrated embodiment four spacer frames 134. Each of the isolation frames 134 may be integrally formed of metal, for example. For example, each spacer 134 may have a generally V-shaped cross-section such that one or more apertures 134a are formed in each of the two flanks of the V-shape (in the illustrated embodiment, one aperture 134a is formed on each flank). In use, each of the isolation frames 134 can be placed on the bottom wall 132 of the firebox 130 with the opening of the V-shape facing downward such that each of the isolation frames 134 has a length just enough to cover the vent holes 133 of the corresponding group, as shown in FIG. 3. Thus, a hollow space through which air can flow is formed between the partition frame 134 placed with the opening of the V-shape facing downward and the bottom wall 132, and the hollow space communicates with the interior of the bowl 130 at openings on both sides in the longitudinal direction of the partition frame 134. Further, the hollow space can also communicate with the interior of the firebox 130 via the above-mentioned orifice 134 a.

The side wings of each spacer 134 may be placed directly on the bottom wall 132. Alternatively, the side wings of the spacer 134 may be welded to the bottom wall 132 or detachably connected to the bottom wall 132 by suitable means such as screws. It should be clear that the isolation frame 134 is not limited to the V-shape shown in the figures, and any other shape can be adopted in the technical solution of the present application as long as a hollow space through which air can flow is formed between the isolation frame 134 and the bottom wall 132, particularly the vent hole 133 of the bottom wall 132, and the hollow space is communicated with the inside of the fire pan 130. That is, each spacer 134 can cover the set of vent holes 133 in a manner that does not impede air from exiting through the corresponding set of vent holes 133.

The housing 120 is substantially hollow cylindrical and is integrally formed of metal. The housing 120 has a side wall 121, a skirt 122 formed on the top of the side wall 121. At the same time, a ring of flanges 123 extends substantially parallel to the side wall 121 from the radially innermost side of the skirt 122. The collar flange 123 defines a top opening 120a of the housing 120. The top opening 120a may have a diameter less than the diameter of the hollow interior region of the firebox 130. The side wall 121 has a plurality of mounting lugs 124 extending radially inwardly at its bottom edge, for example four radial lugs 124 in the illustrated embodiment. The radial lugs 124 may be evenly circumferentially spaced from one another. Each radial lug 124 extends radially inward from the side wall 121, and a suitable fixing fitting such as a bolt and a screw for fixing the housing 120 may be mounted on each radial lug 124. The bottom of sidewall 121 defines a bottom opening 120 b. The diameter of the bottom opening 120b is greater than the opening diameter of the firebox 130 so that the firebox 130 may be inserted from below through the bottom opening 120b into the interior cavity surrounded by the housing 120.

To position the firebox 130 relative to the housing 120 to constrain the gap 1231 as described below, the firebox 130 may be provided with a firebox retainer 135. In the illustrated embodiment, four bowl holders 135 are shown. It will be apparent to those skilled in the art that the number of fire pan holders 135 can be as desired. The four cone holders 135 are fixed to the side wall 131 of the cone 130 circumferentially at even intervals from each other near the top edge of the cone 130. Each of the cone holders 135 may, for example, take the form of a hook having a first portion capable of being secured to the outer wall of the cone 130 and a second portion capable of slightly projecting radially outwardly therefrom after being secured to the side wall 131 of the cone 130. After the firebox 130 is inserted into the outer shell 120 as described below, these firebox holders 135 can contact the side edges 122 of the outer shell 120 so that a sufficient gap 1231 is ensured between the flange 123 of the outer shell 120 and the top edge of the side walls 131 of the firebox 130. Thus, these cone holders 135 can function to ensure the temporary positioning of the cone 130 within the housing 120.

The fire 100 of the present application further comprises a first thermal barrier 140 and a second thermal barrier 150. The first thermal barrier 140 may also be referred to as an upper thermal barrier 140. The second thermal barrier 150 may also be referred to as a lower thermal barrier 150. The first and

second heat barriers

140, 150 are each made of a high temperature resistant metal, such as cast iron, stainless steel, etc., and in the embodiment shown are generally disc-shaped, in particular disc-shaped. The diameter of the disk or disc body of the first heat shield 140 is smaller than the diameter of the disk or disc body of the second heat shield 150. A plurality of tabs 140a extend radially outward from the disk or circular disk body of the first heat barrier 140, and a through hole through which a bolt may pass may be formed in each tab 140 a.

The base 110 is substantially circular in shape, and a plurality of through holes 110a are formed in the peripheral wall of the base 110 at circumferentially uniform intervals. In the solution of the present application, the diameter of the circular disk body of the second thermal barrier 150 is slightly smaller than the inner diameter of the peripheral wall of the base 110, so that the second thermal barrier 150 can be put into the hollow cavity surrounded by the peripheral wall of the base 110 after the base 110 is laid on the ground. Furthermore, a plurality of rests 150a are provided around the disk or disc body of the second thermal barrier 150, in the embodiment shown, four rests 150a are shown. These rests 150a are configured to be able to come into contact with corresponding receivers provided on the inner wall of the base 110, so that the second thermal barrier 150 is detachably fixed with respect to the base 110.

As shown in the drawings, the disk or circular disk body of the first heat shield 140 is a solid disk body, and the disk or circular disk body of the second heat shield 150 is formed with an opening 150b at the center thereof. In the context of the present application, the term "solid disc" means that no openings are formed in the disc. Further, each tab 140a of the first thermal barrier 140 may be configured to be able to rest on the top edge of the base 110 after lying on the ground. In addition, according to the application, the fire 100 also includes a plurality of cone supports 160, in the illustrated embodiment four cone supports 160. Each of the cone brackets 160 has a first portion 160a for contacting the corresponding tab 140a of the first heat shield 140, and is formed with a through hole capable of coinciding with the through hole of the tab 140 a. In addition, each of the cone supports 160 also has a second portion 160b extending at a generally offset angle, such as 90 degrees, from the first portion 160 a. In addition, each of the cone supports 160 also has a third portion 160c that is offset from the second portion 160b by an angle, such as 90 degrees, and extends in a direction opposite to the first portion 160 a. The third portion 160c is configured for contact with the bottom wall 132 of the firebox 130. Thus, the tab 140a, the bowl support 160, and the mounting lugs 124 can be secured together using threaded fasteners, such as screws, nuts, and the first thermal barrier 140 can exist as a bottom wall of the outer shell 120.

Thus, how the fire 100 according to the present application is assembled is described below with the aid of figure 2. It should be clear to those skilled in the art that the steps of dismantling the furnace 100 may similarly be accomplished in reverse. In addition, the order of the steps described below is not fixed, and the user can adjust the sequence of the steps according to the needs.

First, the base 110 is placed flat on the ground, i.e., the bottom edge of the base 110 contacts the ground and the top edge of the base 110 is above. Then, the second thermal barrier 150 is placed into the hollow cavity surrounded by the base 110, so that the second thermal barrier 150 is fixed via its rest 150a in contact with the base 110. The second thermal barrier 150 is located within the base 110, as viewed in the direction of gravity. Additionally, the height of the second thermal barrier 150 in the direction of gravity may be higher than or just higher than the upper edge of the uppermost through-hole 110a of the plurality of through-holes 110a formed in the base 110, thereby ensuring that when the fire 100 is used after being assembled in place, the cool air for combustion must first pass through the through-holes 110a of the base 110 before passing through the central opening 150b of the second thermal barrier 150.

Next, the bowl 130, to which the spacer 134 is fixed as described above, is loaded into the housing 120 from below, and the positioning of the bowl 130 in the housing 120 is ensured by the bowl holder 135 contacting, for example, the skirt 122 of the housing 120. Thus, a space through which air can flow may be formed between the cylindrical sidewall 131 of the bowl 130 and the sidewall 121 of the housing 120. At the same time, a sufficient gap 1231 is left between the flange 123 of the outer casing 120 and the top edge of the cylindrical side wall 131 of the firebox 130 so that the air in the space can flow out through the gap 1231. For example, the gap 1231 may extend continuously around the flange 123 of the housing 120 or the top edge of the cylindrical sidewall 131 of the firebox 130. Alternatively, the gap 1231 may also extend intermittently, for example, by forming the flange 123 in a zigzag manner to intermittently contact the cylindrical sidewall 131 of the cone 130. After the firebox 130 is fixed in position relative to the housing 120, the bottom wall 132 of the firebox 130 extends into the housing 120, as viewed in the direction of gravity, so as to be not flush with the bottom edge of the side walls 121 of the housing 120.

Next, a plurality of bolts are respectively passed through the through-holes in the plurality of radial lugs 124 of the outer shell 120, and at the same time, a plurality of cone holders 160 are arranged on the bottom wall 132 of the cone 130, for example, in a manner as shown in fig. 2 (i.e., in a manner that the third portion 160c of each cone holder 160 is in contact with the bottom wall 132 of the cone 130), while the bolts are also passed through the through-holes of the respective tabs 140a of the first heat shield 140 and locked via nuts, so that the third portion 160c of the cone holder 160 is brought into close contact with the bottom wall 132 of the cone 130 while the first portion 160a of the cone holder 160 is sandwiched between the radial lugs 124 of the outer shell 120 and the tabs 140a of the first heat shield 140. Thus, the second portion 160b of the cone support 160 should be configured such that the distance in the direction of gravity between the first portion 160a and the third portion 160c is exactly equal to the distance in the direction of gravity between the bottom wall 132 of the cone 130 and the bottom edge of the side wall 121 of the housing 120 when mounted in place relative to the housing 120. Importantly, due to the presence of the bowl support 160, a space is left between the first thermal barrier 140 and the bowl 130 for the passage of air. Further, since the diameter of the circular disk of the first heat shield 140 is smaller than the diameter of the housing 120, a circumferential gap through which air can pass is formed between the first heat shield 140 and the sidewall 121 of the housing 120.

Next, the housing 120 (carrying the firebox 130 together) with the first thermal barrier 140 already mounted is placed on the top edge of the base 110 with the first thermal barrier 140 down, thereby forming the fire 100 according to the present application, as shown in fig. 4. Here, the first thermal barrier 140 may also be considered to constitute a bottom wall of the housing 120.

In outdoor use, a solid combustible such as charcoal or log splitter is placed into the bowl 130 from above through the top opening 120a, for example, may be scattered on the bottom wall 132 of the bowl 130 and ignited. At this time, the cold air in the open air firstly enters the inside of the fire 100, particularly the area between the first and

second heat barriers

140 and 150, via a path a passing through the through-holes 110a of the base 110 and the central opening 150B of the second heat barrier 150, and then enters the space between the side wall 131 of the fire pan 130 and the housing 120 and the space between the bottom wall 132 of the fire pan 130 and the first heat barrier 140 along a route B of the circumferential gap between the first heat barrier 140 and the side wall 121 of the housing 120. In the process of the cold air entering through the route a, when the cold air flows through the region between the first heat shield 140 and the second heat shield 150, since the heat generated by the combustion in the fire pot 130 is transferred to the region through the first heat shield 140, the cold air is heated, and most of the transferred heat is carried away by the flowing cold air, so that the temperature of the second heat shield 150 is not too high.

Then, a portion of the air that has been heated enters the interior region of the firebox 130 via a route C that passes through the vent holes 133 of the bottom wall 132 and the isolation shelf 134, particularly the apertures 134a of the isolation shelf 134, and participates in combustion. In the process, the air is further heated in the space between the bottom wall 132 of the firebox 130 and the first thermal barrier 140, so that the air so heated can ensure more complete combustion of the solid combustible. At the same time, another portion of the air is discharged above into the firebox 130 via a route D passing through the space between the side wall 131 of the firebox 130 and the outer shell 120 and finally via the gap between the flange 123 of the outer shell 120 and the top edge of the cylindrical side wall 131 of the firebox 130. In the process, the side wall 131 of the firebox 130 is heated and further heats the air traveling along the path D, by being influenced by the heat of combustion of the solid combustible in the firebox 130, so that the air discharged above is already heated to a certain high temperature before being discharged. At the same time, the fumes produced by the combustion of the solid comburent arranged on the bottom wall 131 of the bowl 130 can be mixed above with the high-temperature air discharged along the path D, and if the fumes contain sufficiently unburned combustible particles, they can be further ignited, thus reducing the production of fumes, in particular black fumes.

Therefore, the stove 100 designed by the application can ensure the sufficient combustion of the solid combustible, further reduce the generation of insufficient smoke and improve the energy utilization efficiency. Due to the adoption of the isolation frame 134 on the bottom wall 132 of the fire pan 130, air can enter the interior of the fire pan 130 through the isolation frame 134 in different directions, so that the solid comburent can be ensured not to accidentally block the air from entering the interior of the fire pan 130 through the route C to participate in combustion, and the solid comburent can be ensured to be fully combusted. More importantly, in the fire 100 of the present application, since the first and

second heat barriers

140 and 150, which are isolated from each other, are disposed under the firebox 130, the discharge of heat generated by combustion in the firebox 130 to the ground can be well blocked, thereby eliminating the possibility of damage to the ground. Further, since the gap between the first heat barrier 140 and the side wall 131 and the central opening 150b of the second heat barrier 150 do not have projected areas overlapping each other as viewed in an (imaginary) plane perpendicular to the direction of gravity, even if ash is generated at the time of combustion, such ash does not directly fall onto the ground from the gap between the first heat barrier 140 and the side wall 131 (due to being blocked by the second heat barrier 150).

In addition, a removable bracket (not shown) may be provided on the housing 120 of the fire 100, a portion of which may extend over the firebox 130 so that food items may be placed for grilling consumption.

Although specific embodiments of the present application have been described herein in detail, they have been presented for purposes of illustration only and are not to be construed as limiting the scope of the application. Further, it should be clear to those skilled in the art that the various embodiments described in this specification can be used in combination with each other. Various substitutions, alterations, and modifications may be conceived without departing from the spirit and scope of the present application.

Claims

1. An outdoor fire (100) comprising:

a base (110) for placing on a ground, a plurality of through holes (110a) being formed in the base (110) and a lower thermal barrier (150) being disposed in the base (110);

a housing (120) on the base (110), the housing (120) including an upper thermal barrier (140) as a bottom wall thereof and sidewalls for defining a top opening (120 a); and

a firebox (130) surrounded by the housing (120), a space through which air flows being defined between a bottom wall (132) of the firebox (130) and a bottom wall of the housing (120), a side wall of the firebox (130) and a side wall of the housing (120), the bottom wall (132) of the fire pan (130), the upper thermal barrier (140), and the lower thermal barrier (150) being spaced apart from one another, a plurality of vent holes (133) are formed in the bottom wall (132) of the fire pan (130), a first gap (1231) defined between the side wall of the fire pan (130) and the side wall of the housing (120) around the top opening (120a) is in fluid communication with the space, the upper thermal barrier (140) and the sidewall of the housing (120) defining a second gap therebetween in fluid communication with the space, an air inlet is defined between the lower thermal barrier (150) and the base (110) in fluid communication with the space.

2. An outdoor fire (100) as claimed in claim 1 wherein when the base (110) of the outdoor fire (100) is placed on the ground, there is no projected area where the second gap and the air inlet overlap one another, viewed in a plane perpendicular to the direction of gravity.

3. An outdoor fire (100) as claimed in claim 1 or 2 wherein the base (110) comprises a peripheral wall in which is formed a plurality of circumferentially evenly spaced through holes (110a), the lower thermal barrier (150) is located above the plurality of through holes (110a) and the lower thermal barrier (150) is a metal disc formed with a central opening (150b), the air inlet comprising the plurality of through holes (110a) and the central opening (150 b).

4. An outdoor fire (100) as claimed in claim 3 wherein the housing (120) is supported on the base (110) via the upper thermal barrier (140).

5. An outdoor fire (100) as claimed in claim 4 wherein the upper thermal barrier (140) supports the bottom wall (132) of the fire pan (130) only via a plurality of fire pan brackets (160) removably connected thereto.

6. The outdoor fire (100) of claim 5 wherein the lower thermal barrier (150) is supported in the base (110) via a plurality of rests (150a), the plurality of rests (150a) being different from the plurality of fire pan supports (160).

7. An outdoor fire (100) as claimed in claim 6 wherein the upper thermal barrier (140) is a metal disc, the second gap being formed only between the periphery of the metal disc and the bottom edge of the side wall of the housing (120).

8. The outdoor fire (100) of claim 7 wherein a plurality of tabs (140a) extend radially outwardly from a periphery of the metal plate, a side wall of the housing (120) extends radially inwardly on a bottom edge thereof with a plurality of mounting lugs (124), one tab (140a) of the plurality of tabs (140a) being secured together with a respective one mounting lug (124) of the plurality of mounting lugs (124) via a respective one of the plurality of cone brackets (160).

9. An outdoor fire (100) as claimed in claim 8 wherein a plurality of spacer shelves (134) are arranged on the bottom wall (132) of the fire pan (130) in the interior region of the fire pan (130) for containing solid combustible.

10. An outdoor fire (100) as claimed in claim 9 wherein the plurality of vent holes (133) are formed in the bottom wall (132) of the fire pan (130) in groups such that each group of vent holes (133) is covered by each respective spacer frame (134) in a manner that does not impede the egress of air through the vent holes (133).

11. An outdoor fire (100) as claimed in claim 1 or 2 wherein the housing (120) includes a rim (122) formed on top of the side wall of the housing (120) and a rim flange (123) extending parallel to the side wall of the housing (120) from the radially innermost side of the rim (122), and the first gap (1231) is formed between the rim flange (123) and the top edge of the side wall of the fire pan (130).

12. An outdoor fire (100) as claimed in claim 11 wherein the first gap (1231) is configured such that air for combustion enters from above into an interior region of the fire pan (130) for containing solid combustible material after flowing through the air for preheating.

13. An outdoor fire (100) as claimed in claim 12 wherein the top opening (120a) is defined by the collar (123) and has a diameter less than the diameter of the fire pan (130).

14. The outdoor fire (100) of claim 10 wherein the plurality of sets of ventilation apertures (133) are evenly spaced circumferentially, each spacer (134) has a V-shaped cross-section and is arranged on the bottom wall (132) of the fire pan (130) in such a way that two flanks of the V-shape contact the bottom wall (132) of the fire pan (130).

15. An outdoor fire (100) as claimed in claim 14 wherein at least one aperture (134a) is formed in each of the two flanks of the V-shape.

16. An outdoor fire (100) as claimed in claim 5 wherein a fire pan holder (135) is provided on a side wall of the fire pan (130) to contact the housing (120) to define the first gap.

17. An outdoor fire (100) as claimed in claim 1 or claim 2 wherein the base (110) is annular and stands on the ground with one edge of the annulus.