KR20150060137A - Stove air circulation system - Google Patents

Abstract

The present invention relates to an air circulation-type heater. The air circulation-type heater comprises: a body provided with a combustion room disposed on an upper portion thereof, leg members formed on a lower portion thereof to separate the combustion room from the ground and support the combustion room, and a first and a second air inflow hole formed on a lower and an upper portion of a side of the combustion room; a fuel insertion hole formed on one side of an upper portion of the combustion room; an air inflow induction member detachably mounted on the fuel insertion hole, formed in a funnel shape, and whose inner radius becomes smaller towards the lower end thereof; an emission hole formed on the other side of the upper portion of the combustion room; a fuel mounting device installed on the bottom surface inside the combustion room and provided with an inclined surface to dispose fuel in an inclined position; an ash collector installed on a lower surface outside the combustion room to collect ash completely combusted and discharged to the outside. The present invention increases combustion efficiency by 50-60% compared to conventional heaters by using a convection phenomenon in the upper portion of the combustion room caused by the fuel insertion hole and the emission hole which suck air into the upper portion of combustion room. Since fuel consumption is reduced, heating maintenance expenses can be substantially reduced. And, since ash produced from a combustion process is prevented from flowing towards the fuel insertion hole, the heater can be pleasantly used indoors.

Description

{Stove air circulation system}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stove using an air circulation system, and more particularly, to an air-circulated stove capable of providing a stable thermal power with a small amount of fuel and preventing backflow of dust during operation.

Generally, a hearth is one of the heating apparatuses used for heating indoor and outdoor such as a vinyl house of a home, an office, and a farmhouse, and a construction site.

Recently, the prices of fluid fuels (such as gas fuels such as liquefied petroleum gas or natural gas, liquid fuels such as gasoline or gasoline) have been greatly increased, so that solid fuels Coal, coal, firewood, coke, etc.) is on the rise.

Especially in rural areas and mountain villages, most of them are solving the heating of vinyl houses using solid fuel stoves. In addition, in the driving ranges, factories, and construction sites, gas stoves, A stove using solid fuel is replacing heating.

As a prior art of a stove using such a solid fuel, it has already been disclosed in a domestic publication publication No. 20-2013-0004763, "a portable type fireplace stove which is convenient to carry and store ".

However, in the conventional stove using solid fuel such as wood firewood or charcoal including such prior art, due to its structure, there is a large amount of fuel consumed during the combustion, so that the cost of heating is high. In the combustion process, It is difficult to use it indoors, and the efficiency of management is deteriorated.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a fuel injection system and a fuel injection system, An object of the present invention is to provide an air circulation type fireplace which can further improve thermal efficiency and prevent backflow of dust during operation to further reduce the use and maintenance cost.

According to a preferred embodiment of the present invention, a combustion chamber is provided at an upper portion of the present invention, and a leg member for supporting the combustion chamber away from the ground is formed at a lower portion thereof. The upper and lower sides of the combustion chamber have a first air inlet and a second A funnel-shaped air intake induction member which is detachably attached to the fuel inlet and whose inner diameter gradually decreases from the upper side to the lower side; and an air intake guide member which is formed on the other side of the upper portion of the combustion chamber A fuel holder installed on an inner bottom surface of the combustion chamber and having an inclined surface inclined so that the fuel is inclined; and an ash receiving unit disposed on an outer bottom surface of the combustion chamber and containing the ash completely combusted and discharged to the outside of the combustion chamber .

Preferably, the air intake guiding member further includes an adjusting member which is fitted in an inner diameter of one of the sections and can block the air flowing through the air intake guiding member or adjust the inflow amount of the air, do.

More preferably, the present invention relates to the provision of a refraction inducing plate on the top surface of the combustion chamber extending toward the bottom surface of the combustion chamber.

More preferably, the present invention relates to a structure in which the refractive induction plates are spaced apart from each other along the upper surface of the combustion chamber and the elongated lengths of the respective refractive induction plates are formed to be different from each other.

More preferably, the present invention relates to the provision of a side window of the combustion chamber which is capable of penetrating the inside of the combustion chamber.

More preferably, the present invention relates to a combustion chamber having knobs on both sides thereof and a safety net on the front and rear sides of the combustion chamber.

More preferably, the present invention relates to a temperature measuring device for checking the temperature inside the combustion chamber.

More preferably, the present invention relates to the provision of a circular plate corresponding to the inside diameter of the exhaust port in the exhaust port, and an operating member connected to the circular plate outside the exhaust port to adjust the rotation angle of the circular plate.

More preferably, the present invention relates to a case in which a hot water storage portion is annularly installed on one side of the exhaust port, and a supply portion and a discharge portion for supplying cold water and discharging hot water are provided on one side and the other side of the hot water storage portion.

More preferably, the present invention is characterized in that the fuel supply hopper is detachably installed vertically above the fuel injection port provided with the air intake guide member so that the fuel discharged from the fuel supply hopper is supplied into the combustion chamber through the air intake induction member Related to the configuration.

The air circulation type fireplace according to the present invention is characterized in that the combustion efficiency is improved by 50 to 60% or more compared with the conventional one by using the natural convection phenomenon formed at the upper part of the combustion chamber by constituting the fuel inlet and exhaust port, The amount of fuel consumed can be reduced and the cost of maintaining the heating can be greatly reduced and the dust generated during the combustion process can be prevented from flowing back to the fuel inlet.

In addition, since the effect of the present invention is obviously exerted by the constitution of the invention irrespective of whether or not the inventor perceives it, the above effect is only some effects according to the present invention, It should not be.

Further, the effect of the present invention should be additionally grasped by the entire description of the specification, and even if it is not described in an explicit sentence, those skilled in the art will recognize that It should be seen as an effect described in this specification.

1 is a front sectional view illustrating a configuration of an air circulation type fireplace according to an embodiment of the present invention.
2 is a side view illustrating a side view of an air circulation type fireplace according to an embodiment of the present invention.
3 is a front sectional view illustrating an operating state of an air circulation type fireplace according to an embodiment of the present invention.
FIG. 4 is a perspective view showing an air intake guide member of an air circulation type fireplace according to an embodiment of the present invention.
FIG. 5 is a perspective view showing an exhaust port of an air circulation type fireplace according to an embodiment of the present invention.
6 is a front sectional view illustrating an operating state of an air circulation type fireplace according to another embodiment of the present invention.
7 is a front sectional view illustrating an operating state of an air circulation type fireplace according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It will be understood by those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user, operator And the definitions of these terms should be based on the contents throughout this specification.

The air circulation type fireplace according to the present invention includes a body 100 including a combustion chamber 110 and a leg member 120, a fuel inlet 130 provided at one side of the combustion chamber 110, An air inlet guide member 200 detached from the inlet 130, an air outlet 300 installed on the other side of the combustion chamber 110, a fuel holder 400 installed on the inner bottom surface of the combustion chamber 110, And the ash receiving unit 500 installed on the outer bottom surface of the housing 110. Hereinafter, each component will be described in detail with reference to FIG. 1 through FIG.

The body (100)

The combustion chamber 110 includes a combustion chamber 110 and a component including a leg member 120 for supporting the combustion chamber 110 away from the ground. The combustion chamber 110 is cylindrical, A second air intake port 112 formed at the lower side and a fuel inlet 130 and an exhaust port 300 at the upper surface and a re-exhaust hole 170 at the lower surface, .

The first air intake port 111 formed at a side center portion of the combustion chamber 110 may have a structure in which the first air intake port 111 is opened and closed by a lid, The first air intake port 111 is used to supply the air required in the combustion chamber 110 when the fuel inlet 130 is closed as needed. The first air intake port 111 is closed when the fuel inlet 130 is closed It does not need to be used.

The second air intake port 112 formed at the lower side of the combustion chamber 110 serves to supply air to the combustion chamber 110 so that the fuel placed on the bottom surface of the combustion chamber 110 can be burned. May be formed in any part of the combustion chamber 110 as long as it is capable of supplying air to the fuel placed in the combustion chamber 110 without being limited to the side lower part of the combustion chamber 110. [

A material discharge hole 170 is formed in the bottom surface of the combustion chamber 110 so that when the fuel placed on the bottom surface of the combustion chamber 110 is completely burnt and then ashes, such material is discharged to the outside of the combustion chamber 110 through the re- .

2, a handle may be further provided on both sides of the combustion chamber 110 to secure the mobility of the hearth, and a user may be provided on the front and rear surfaces of the combustion chamber 110, And a safety net 140 is provided to prevent direct contact with the image.

The combustion chamber 110 may further include a sight window 160 for confirming the combustion state inside the combustion chamber 110 and a temperature measuring device (not shown) for measuring the temperature inside the combustion chamber 110 .

The fuel inlet (130)

The size of the fuel inlet 130 may vary depending on the volume of the combustion chamber 110. The diameter of the fuel inlet 130 may vary depending on the volume of the combustion chamber 110. For example, And the fuel inlet 130 is preferably formed at a vertex of the outer circumference of the combustion chamber 110. However, the installation position of the fuel inlet 130 may not be limited to the outer circumference of the combustion chamber 110 but may be formed at a position deviated from the vertex.

The fuel inlet 130 need not be limited to a circular shape, but may be formed into a polygonal shape including a square shape or a non-circular shape.

The fuel injected through the fuel inlet 130 may be supplied with fuel as large as the firewood. In the case of using the furnace as a pellet furnace, conventionally, a small-sized fuel such as pellets or sawdust or rice hulls The fuel is supplied to the fuel inlet of the stove while being dropped in the fuel supply cylinder. At this time, the fuel in the fuel supply cylinder is pressurized due to the heat rising to the fuel inlet 130 or the fuel is ignited, There was a risk of being able to.

Therefore, the present invention is applicable to a fuel supply hopper such as a pellet bin in which a small-sized fuel is accommodated in a vertically upper portion, which is spaced by about 20 cm from the fuel inlet 130 where the air intake guide member 200 to be described later is installed, The fuel supply hopper 600 may be detachably attached to the fuel supply hopper 600 and a charge amount adjusting plate 610 may be provided under the fuel supply hopper 600 so that the small amount of fuel accommodated in the fuel supply hopper 600 may be automatically The amount of fuel to be injected is adjusted by manual control, and the fuel is supplied to the inside of the combustion chamber 110 through the air induction member 200 after falling down. Thus, it is possible to use fuel of a small size as well as large- The air in the combustion chamber 110 does not flow back toward the fuel supply hopper 600 as the air is sucked into the combustion chamber 110 through the air intake induction member 200 during operation, Can be used.

The air suction guide member (200)

The air intake guide member 200 is installed in the fuel inlet 130 and allows the outside air to flow into the combustion chamber 110. The air intake guide member 200 introduces outside air into the combustion chamber 110, The amount of air may be controlled or the inflow of air may be blocked.

A preferred embodiment of the air induction guide member 200 may be a funnel shape in which the inner diameter gradually increases from the lower portion to the upper portion so as to be detachably installed through the circular fuel inlet 130.

That is, when the fuel inlet 130 is formed in a circular shape, the air intake induction member 200 is formed in a funnel shape having a circular outer circumferential surface so as to be fitted to the fuel inlet 130 at a predetermined depth. When the fuel inlet 130 is oval, the outer circumferential surface of the air intake induction member 200 may be in the shape of a rectangle in which the outer circumferential surface of the air intake guide member 200 is in the shape of a rectangle, The air intake guide member 200 having a funnel shape having a circular outer circumferential surface as illustrated in the drawings will be described in the present invention.

The reason why the air intake guide member 200 is formed in the form of a funnel and installed at the fuel inlet 130 located at the upper portion of the combustion chamber 110 is that the flow velocity is increased when the fluid passes through a narrow space, And the phenomenon that the air moves toward the hot air.

That is, when the fuel is burned in the combustion chamber 110, air needs to be supplied so that the cool external air is introduced into the combustion chamber 110 through the air intake induction member 200 provided at the fuel inlet 130, The cool outside air passing through the inlet 130 flows into the combustion chamber 110 while the flow velocity is increased due to the difference in the diameter of the fuel inlet 130.

The air suction guide member 200 may further include a handle 201 extended to be easily detachable from the fuel inlet 130 and may block the flow of air passing through the air suction guide member 200 The control members 210 and 220 may be further provided with front and rear surfaces closed to control the amount of passage, or one or more through holes formed on the front and rear surfaces.

3 and 4, the adjusting members 210 and 220 have the same outer diameter as the inner diameter of the inner surface of the air intake guide member 200, The air inhaling member 200 is horizontally hooked on any one of the inner surfaces of the air inhaling guide member 200.

Therefore, when the adjustment member 210 having the front and rear surfaces closed by the air inhaling guide member 200 is installed, air can be prevented from being introduced into the combustion chamber 110 through the air inhaling guide member 200, The amount of air flowing into the combustion chamber 110 through the air intake induction member 200 is reduced by the amount of the air introduced through the air induction member 200 into the through hole 221 when the adjusting member 220 having the at least one through- The size and number of the nozzles 221 are adjusted.

On the other hand, when the control member 210 having the front and rear surfaces closed as described above is installed in the air intake guide member 200, air can not flow into the combustion chamber 110 through the air intake guide member 200 In this case, in order to keep the combustion state in the combustion chamber 110 to a minimum, the first air intake port 111 provided at the side of the combustion chamber 110 may be opened to maintain the basic combustion state in the combustion chamber 110.

In addition, the adjusting members 210 and 220 may be configured to be seated on the upper end of the air induction guide member 200, but they may be mounted horizontally or obliquely in the middle of the inner surface of the air induction guide member 200, The grip members 230 may be further provided on the adjustment members 210 and 220 so that the adjustment members 210 and 220 can be easily detached from the suction guide member 200. [

Another embodiment of detaching the adjustable members 210 and 220 from the air inhaling guide member 200 is to form a fitting hole (not shown in the drawing) communicating with the inside of either of the outer circumferential surfaces of the air inhaling guide member 200 So that the flow of air passing through the air intake induction member 200 is blocked through the adjusting members 210 and 220 which are inserted into the fitting hole while the adjusting members 210 and 220 are inserted into and detached from the fitting hole, The amount of flow of the gas can be adjusted.

6, as another embodiment of the air inhaling guide member 200, a direction adjusting member capable of guiding the direction of the air introduced through the air inhaling guide member 200 to one side rather than the lower side, The air introduced through the air intake induction member 200 is not directly transferred to the fuel in the combustion chamber 110 by installing the air intake guide member 240 in a detachable form integrally or assembled below the air intake guide member 200 So that they can be bent to one side so that they can be indirectly transmitted.

Therefore, when it is necessary to adjust the internal combustion state of the combustion chamber 110 to reduce the combustion state, the conventional air induction member 200 inserted in the fuel inlet 130 is separated, The combustion condition of the combustion chamber 110 can be controlled by adjusting the direction of the direction adjusting member 240 after the direction adjusting member 240 is coupled to the lower portion of the conventional air induction member 200 .

The exhaust port (300)

The combustion chamber 110 is provided at the other side of the upper portion of the combustion chamber 110 and is spaced apart from the fuel inlet 130 by a predetermined distance .

As shown in FIG. 5, the exhaust port 300 may be provided with a means for blocking the discharge of the combustion gas or adjusting the amount of the discharged combustion gas. A disk 310 rotatable within the exhaust port 300 is provided with an outer diameter corresponding to the inner diameter of the exhaust port 300. The disk 310 is connected to an operation member 320 provided outside the exhaust port 300, So that the opening angle of the disc 310 can be adjusted through the operation of the actuating member 320 so that the passage of the exhaust port 300 can be completely opened, closed or partially opened.

A hot water storage unit 330 is annularly wrapped around one side of the exhaust port 300. A supply unit 331 for supplying cold water to one side of the hot water storage unit 330 is installed in the hot water storage unit 330 And a discharge unit 332 through which hot water can be discharged may be installed on the other side of the boiler.

As the air intake induction member 200 and the exhaust port 300 are positioned above the combustion chamber 110, the air intake induction member 200 and the exhaust port 300 are introduced into the combustion chamber 110 through the air induction member 200 located at one side of the combustion chamber 110 The heated air is heated according to the combustion action in the combustion chamber 110 and then immediately escapes through the exhaust port 300 on the other side of the upper portion of the combustion chamber 110 which is spaced apart from the air intake induction member 200. At this time, The amount of fuel consumed can be reduced. However, since heat can not be sufficiently transferred in the combustion chamber 110, it may be difficult to provide an effective thermal power.

1 and 3, a refraction induction plate 150 having a predetermined length toward the bottom surface of the combustion chamber 110 is provided on the top surface of the combustion chamber 110, so that the air induction member 200 The airflow of the air introduced into the combustion chamber 110 through the combustion chamber 110 does not directly escape to the exhaust port 300 but is refracted by the refraction induction plate 150 to cause a sufficient convection phenomenon in the combustion chamber 110, So that it can receive firepower.

A preferred embodiment of the refraction inducing plate 150 may be a straight shape having a predetermined length in the vertical direction toward the bottom surface of the combustion chamber 110 in the top surface of the combustion chamber 110 or a straight shape having a predetermined length in the vertical direction toward the bottom surface of the combustion chamber 110 A shape having a predetermined length in a direction and a part of the end of which is inclined or a curved shape modified from a straight shape.

Another embodiment of the refraction inducing plate 150 may be formed to be inclined at an angle that is not perpendicular to the bottom surface of the combustion chamber 110 from the top surface of the combustion chamber 110 while being in a linear or curved shape as described above.

In another embodiment of the refraction induction plate 150, a plurality of refraction induction plates 150 may be provided on the upper surface of the combustion chamber 110 with the same or different spacing, When the refractive guide plates 150 are formed at the same or different spacing and have a plurality of different lengths, the lengths thereof may be the same or may be different from each other. And may be configured in a sequential manner.

The fuel holder (400)

As shown in FIGS. 1 and 3, the fuel is installed on the bottom surface of the combustion chamber 110 to effectively receive the fuel supplied into the combustion chamber 110, and when the supplied fuel is stacked and stacked, So that the air is introduced into the space and the fuel is effectively burned.

In the preferred embodiment of the fuel holder 400, the central portion is configured to be spaced apart from the bottom surface of the combustion chamber 110 by a predetermined height, and both ends of the fuel holder 400 are inclined downward with respect to the center so as to be in contact with the bottom surface of the combustion chamber 110 (Not shown in the figure) that can pass through the upper and lower sides of the fuel holder 400. The second air intake port 112 provided below the side of the combustion chamber 110 is connected to the fuel The air sucked in the second air intake port 112 is raised upward from the lower center of the fuel holder 400 to effectively burn the fuel held in the fuel holder 400 by extending below the center of the holder 400 .

The ashtray (500)

The fuel injected into the combustion chamber 110 is completely burned as shown in FIGS. 1 and 3, and is installed on the bottom surface of the combustion chamber 110 in correspondence with the position of the re-discharge hole 170 on the bottom surface of the combustion chamber 110, So that the ashes can be safely received in the ash container 500 when the ashes are discharged to the outside of the combustion chamber 110 through the discharge hole 170.

It is preferable that the ashtray 500 is configured to be detachable from the bottom surface of the combustion chamber 110 in a sliding or assembled form rather than being fixedly configured so that the ash contained in the ashtray 500 can be easily discharged to the outside Do.

In addition, the center of the fuel holder 400 and the center of the ash discharging hole 170 and the center of the ash receiving chamber 500 are arranged on the same vertical line so that the ash can be smoothly discharged from the combustion chamber 110 to the outside .

The method of using the air circulation type fireplace and the heat circulation process according to the present invention are as follows.

The fuel is supplied to the combustion chamber 110 through the fuel inlet 130 while the air intake induction member 200 inserted into the fuel inlet 130 of the combustion chamber 110 is separated from the fuel inlet 130. [ The fuel is injected into the combustion chamber 110 by using the fuel holder 400 provided at the bottom of the combustion chamber 110. In this case,

If the air induction member 200 is installed again in the fuel inlet 130 after the fuel is ignited while the second air intake port 112 is opened to allow the air to flow into the fuel, Is rapidly introduced into the combustion chamber through the air induction member 200 from the outside, thereby helping combustion of the fuel.

At this time, in the case of the dust generated in the combustion process of the fuel, the air can not flow back through the air induction inducing member 200 continuously introducing the outside air into the combustion chamber, so that the damage due to dust can be reduced and the surrounding environment can be kept clean.

The air introduced into the combustion chamber 110 through the air intake induction member 200 can not escape directly to the exhaust port 300 in the state where the temperature of the fuel is increased through the combustion of the fuel, So that the thermal efficiency of the combustion chamber can be further increased. After the circulation operation, the air is exhausted to the outside through the exhaust port 300.

In order to block air flowing into the combustion chamber 110 through the air induction member 200 or to control the amount of air flowing into the combustion chamber 110, The method of controlling the combustion power of the combustion chamber 110 may include adjusting the flow rate of the exhaust gas flowing into the combustion chamber 110 by controlling the flow rate of the air, The thermal power of the combustion chamber 110 can be adjusted while adjusting the rotation angle of the disk 310 through the adjustment of the operation member 320 installed in the combustion chamber 110.

In addition, the hot water storage unit 330 may be installed in the exhaust port 300 to utilize the exhaust heat of the exhaust port 300 in the form of a boiler through hot water using a heat source of the combustion gas passing through the exhaust port 300, It is possible to diversify the application range.

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be defined by the appended claims and equivalents thereof.

100: Body 110: Combustion chamber
111: first air intake port 112: second air intake port
120: leg member 130: fuel inlet
140: safety net 150:
160: visible window 170:
200: air induction member 201: handle
210, 220: adjusting member 221: through hole
230: handle 240: direction adjuster
300: exhaust port 310: disc
320: operating member 330: hot water storage unit
331: Supply part 332:
400: fuel holder 500: ash receptacle
600: fuel supply hopper 610: input amount control plate

Claims (10)

1. A furnace for burning fuel supplied to a furnace to provide a required thermal power,
And a lower member provided with a leg member for supporting the combustion chamber away from the ground and supporting a first air inlet and a second air inlet on the upper side and the lower side of the combustion chamber;
A fuel inlet formed at an upper side of the combustion chamber;
A funnel-shaped air induction member detachably attached to the fuel inlet and having an inner diameter gradually reduced from the upper side to the lower side;
An exhaust port formed on the other side of the top of the combustion chamber;
A fuel holder installed on the bottom surface of the combustion chamber and having a slope so that the fuel is inclined; And
And an ashtray installed at an outer bottom surface of the combustion chamber and containing ash completely burned and discharged to the outside of the combustion chamber.
The method according to claim 1,
Wherein the air suction guide member is further provided with an adjusting member fitted in an inner diameter of one of the sections and capable of blocking air flowing through the air suction guide member or adjusting an inflow amount of the air, .
The method according to claim 1,
Wherein the upper surface of the combustion chamber is provided with a refraction induction plate extending toward a bottom surface of the combustion chamber.
The method of claim 3,
Wherein the refraction induction plates are spaced apart from each other along the upper surface of the combustion chamber, and the lengths of the refraction induction plates are different from each other.
The method according to claim 1,
Wherein the one side of the combustion chamber is provided with a sight window through which the inside of the combustion chamber can be viewed.
The method according to claim 1,
Wherein a knob is provided on both sides of the combustion chamber, and a safety net is further provided on the front and rear sides of the combustion chamber.
The method according to claim 1,
Wherein the body is further provided with a temperature measuring device for checking a temperature inside the combustion chamber.
The method according to claim 1,
Wherein the exhaust port is provided with a disk corresponding to the inside diameter of the exhaust port, and an operating member connected to the disk at the outside of the exhaust port to adjust the rotation angle of the disk.
The method according to claim 1,
Wherein a hot water storage portion is annularly formed on an outer circumferential surface of the exhaust port and a supply portion and a discharge portion for supplying cold water and discharging warm water are provided on one side and the other side of the hot water storage portion.
The method according to claim 1,
Wherein a fuel supply hopper is detachably installed on a vertically upper portion spaced apart from a fuel inlet provided with the air intake induction member so that fuel discharged from the fuel supply hopper is supplied into the combustion chamber through an air intake induction member. Circulating stove.

Images