FIRE PIT FOR GASIFICATION AND COMBUSTION OF FUEL

Description

TECHNICAL FIELD

[0001] The present invention relates to the technical field of liquid fuel fireplaces, and relates specifically to a fireplace for gasifying and burning fuel.BACKGROUND ART

[0002] Liquid fuel fireplaces are more and more favored by consumers because of their cleanliness and hygiene, safety for use, and simple installation process.

[0003] However, current liquid fuel fireplaces have a single flame form, and many of them burn liquid fuel directly in a combustion tank. For example, an alcohol fireplace is described in Patent Application No. CN202020556590.7, in which flames burn directly in an elongated combustion tank, and the flames are arranged in a straight line, lacking the feelings of depth and graduation. For another example, a fireplace for gasifying alcohol is described in Patent Application No. CN201921102287.3, in which a burner form composed of multiple bent lines is provided in Embodiment 3, but the burner also has a linear structure in a plane, lacking a graduated feeling and the effect of real firewood being stacked and burned together. Alternatively, for example, an alcohol fireplace is described in Patent Application No. CN202230673245.6. The fireplace has a circular form, but the flames still burn in a plane as a whole, and the shape of the flames is not rich and varied.

[0004] CN 202171283 U describes a liquid fuel gasification combustion fireplace comprising a fireplace body. A cavity chamber capable of containing a combustion device is formed at the bottom of a fireplace cavity of the fireplace body, and a flame observing port is further disposed at the front portion of the fireplace body. The liquid fuel gasification combustion fireplace is characterized in that the combustion device comprises a liquid supply device, a gasification chamber and a combustor. A groove hole used for the combustor to be exposed out is arranged at the top of the cavity chamber, a flame eruption hole is disposed on the combustor, the gasification chamber is provided with a liquid fuel adding port and an air outlet, the liquid fuel adding port of the gasification chamber is communicated with the liquid supply device, the air outlet of the gasification chamber is communicated with the combustor, the main body of the combustor is arranged higher than the connecting port of the combustor and the gasification chamber. The gasification chamber is further provided with an electric heating device.

[0005] WO 2022 / 269521 A1 discloses a fireplace system that may comprise a burner comprising an upper portion shape and a front sloping surface sloping downwardly; and / or a log comprising a recess disposed into a bottom surface of the log. The recess may comprise a recess shape complementary to at least a portion of the upper portion shape of the burner, wherein the log may be disposed over the burner such that at least a portion of the burner is disposed within the recess. The burner may be disposed in the recess of the log such that the log hides the burner from view from a position in front of the fireplace system.

[0006] US 6,048,195 A refers to a combined log set and gas burner system comprising a plurality of reinforced ceramic fiber burner elements formed in the shape of artificial logs and or glowing embers or a non-porous bed of coals. The burner elements are formed with a gas passageway in the interior of the element and a plurality of gas jets are made which connect the surface of the burner elements to the gas passageway in the burner elements. A source gaseous fluid is connected to the passageways to complete the combination burner system which eliminates the need for a separate burner apart from the log system.CONTENT OF INVENTION(I) Technical problem to be solved

[0007] The problem to be solved by the present invention is to provide a fireplace for gasifying and burning fuel, so as to overcome the problems of rigid flames and insufficient flame shapes in the prior art, and to provide a flame shape having a three-dimensional spatial form, simulating the flame effect of real firewood burning, and giving users more visual enjoyment.(II) Technical solution

[0008] In order to solve the technical problem, the present invention provides a fireplace for gasifying and burning fuel, comprising a housing, a burner, a gasification device, a liquid supply device, a fuel tank, and a controller; wherein the burner may be provided above the housing to form an open flame effect; the burner may also be provided inside the housing to form a closed flame effect; wherein the burner is composed of a gas intake port, several horizontal portions, and several inclined portions, a lower end of each inclined portion is connected and fixed to one end of a horizontal portion, and the other ends of all the horizontal portions are connected to each other, the horizontal portions and the inclined portions each have an internally hollow structure, and communicate with each other, the inclined portions are inclined upwardly at an angle ∠α relative to the horizontal portions, and the inclined portions and the horizontal portions are combined into a three-dimensional geometric space shape; the gas intake port is provided on bottom surfaces of the horizontal portions and communicates with the interior of the horizontal portions, and gaseous fuel may enter the interior of the horizontal portions from the gas intake port and further diffuse into the interior of the inclined portions; the horizontal portions are provided with several first flame holes, and the inclined portions are provided with several second flame holes. The gasification device, the liquid supply device, and the controller are all arranged inside the housing, and the fuel tank may be arranged inside the housing or outside the housing; an output port of the fuel tank is connected to an inlet of the liquid supply device, an outlet of the liquid supply device is connected to an inlet of the gasification device, and an outlet of the gasification device is connected to the gas intake port; an overall height of the gasification device is lower than that of the burner; and the controller is connected to the gasification device and the liquid supply device.

[0009] Further, the number of horizontal portions is greater than or equal to 3, and the burner further comprises a combustion chamber main body connecting all the horizontal portions together; the combustion chamber main body has a hollow structure and is provided in the middle of all the horizontal portions, and the horizontal portions are arranged around the circumference of the combustion chamber main body, wherein spacing between any two of the horizontal portions may be the same or different; the gas intake port is provided on a bottom surface of the combustion chamber main body, the gas intake port communicates with the interior of the combustion chamber main body, and the interior of the combustion chamber main body communicates with the interior of the horizontal portions; and the combustion chamber main body is provided with several third flame holes.

[0010] Further, the combustion chamber main body is provided with several combustion air inlets through which combustion air can be supplemented for a middle region of the burner.

[0011] Further, the upwardly inclined angle ∠α of each of the inclined portions may be the same or different, where ∠α is 20° to 80°.

[0012] Further, lower surfaces of the horizontal portions each have an upwardly inclined angle ∠β, where ∠β is 1° to 10°.

[0013] Further, the burner may further comprise several simulated solid fuels, wherein the simulated solid fuels are provided with textures and colors simulating real solid fuels, supporting surfaces are provided on the inclined portions, the simulated solid fuels are fastened to the inclined portions, and the supporting surfaces may be used to support the simulated solid fuels.

[0014] Further, upper surfaces of the combustion air inlets may be higher than an upper surface of the combustion chamber main body.

[0015] Further, the bottom of the burner may be provided with pebbles and / or crystal stones and / or crushed glass and / or simulated charcoal beds and simulated solid fuels for decoration, which are used to simulate the structure of a carbon bed after a real solid fuel is burned, and may cover the combustion chamber main body and / or the horizontal portions, so that it looks more beautiful and realistic as a whole.

[0016] Further, the liquid supply device may be a liquid supply device that delivers a flow at a constant average speed. It may be a constant delivery pump in the prior art, or a set of combined flow control and delivery devices.

[0017] Further, the gasification device may comprise a gasification chamber and heating elements, an inner cavity of the gasification chamber is provided with cooling fins, the heating elements are provided below the inner cavity of the gasification chamber, and the heating elements are matched and connected to the controller.

[0018] Further, the fireplace may comprise an ignition device, and the ignition device may be arranged close to the first flame holes and / or the third flame holes.

[0019] Further, the fireplace may comprise a flame detecting device arranged close to the first flame holes and / or the second flame holes and / or the third flame holes. In order to enable the flame detecting device to reliably detect that flames of more flame holes are ignited, the flame detecting device is arranged remote from the ignition device.

[0020] Further, the gas intake port of the burner may be connected to the gasification device through a gas intake pipe, and the gas intake pipe is made of non-metal.

[0021] Further, the burner may be provided above the housing, the fireplace further comprises a decorative piece, the decorative piece is provided at the periphery of the housing, and the housing and its internal components are hidden inside the decorative piece, so that only the effect of flames burning in the middle of the decorative piece can be seen in an overall appearance.

[0022] Basic principle of the present invention: During operation of the present invention, the controller controls the liquid supply device to draw the liquid fuel from the fuel tank into the gasification device. The controller controls the heating elements to heat, so that the liquid fuel is gasified in the inner cavity of the gasification chamber. Then, the gasified fuel enters the interior of the burner through the gas intake pipe, is diffused into the combustion chamber main body and / or the interior of the horizontal portions and the inclined portions, and further emitted from the first flame holes, the second flame holes and the third flame holes. At this time, the controller controls the ignition device to ignite the gaseous fuel, and then flames are burning in each of the combustion chamber main body and the horizontal portions and the inclined portions, thereby forming a flame effect in a three-dimensional (3D) form. The flame detecting device may detect a flame state of the burner to ensure stable flame combustion. Moreover, the combustion air inlets may be used to supplement the middle region of the burner with air required for combustion, so that the combustion is more complete and the flames are brighter.

[0023] In addition, the simulated solid fuels are provided on the inclined portions, and the bottom of the burner is provided with pebbles and / or crystal stones and / or crushed glass and / or simulated charcoal beds and simulated solid fuels for decoration, used to simulate the structure of a carbon bed after a real solid fuel is burned, making the flames more realistic like real firewood burning in a bonfire, which is warm and comfortable.(III) Beneficial effects

[0024] Compared with the prior art, the advantageous effects of the present invention are as follows: In the fireplace for gasifying and burning fuel provided by the present invention, the burner having the 3D spatial structure formed by combining the horizontal portions and the inclined portions with each other is adopted, so that not only the flames in the horizontal state but also the flames burning in the inclined upwardly direction can be provided. The flames are not limited to the horizontal and linear states, and three-dimensional flames in a 3D space can be formed by combining them with each other. The bonfire effect of real firewood burning can even be imitated, and the decorative effect of the flames is stronger, with better visual appreciation. Moreover, the burner has a simple structure and is easy for installation.BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG. 1 is a schematic view of a three-dimensional structure according to Embodiment 1 of the present invention; FIG. 2 is a schematic view of an exploded structure according to Embodiment 1 of the present invention (excluding self-made pieces and pebbles); FIG. 3 is a schematic view of a cross-sectional structure of a burner according to Embodiment 1 of the present invention; FIG. 4 is a top view according to Embodiment 1 of the present invention; FIG. 5 is a schematic view of the cross-sectional structure according to Embodiment 1 of the present invention taken along direction A; FIG. 6 is a front view according to Embodiment 1 of the present invention; FIG. 7 is a schematic view of the cross-sectional structure according to Embodiment 1 of the present invention taken along direction B; FIG. 8 is a schematic view of the cross-sectional structure of a gasification device according to Embodiment 1 of the present invention; FIG. 9 is a schematic view of a three-dimensional structure according to Embodiment 2 (which is not according to the invention and is present for illustration purposes only); FIG. 10 is a schematic view of an exploded structure according to Embodiment 2 (which is not according to the invention and is present for illustration purposes only); FIG. 11 is a schematic view of a cross-sectional structure according to Embodiment 2 (which is not according to the invention and is present for illustration purposes only) when viewed from the left; FIG. 12 is a schematic view of the cross-sectional structure according to Embodiment 2 (which is not according to the invention and is present for illustration purposes only) of the present invention when viewed from the front; and FIG. 13 is a schematic structural view of a burner according to Embodiment 2 (which is not according to the invention and is present for illustration purposes only)when viewed from the front.

[0026] The names of the components corresponding to the respective reference numerals in the figures are as follows: 1-housing; 11-furnace cavity; 12-flame observation opening; 13-furnace door; 14-smoke exhaust device; 2-burner; 21-gas intake port; 22-horizontal portion; 221-first flame hole; 23-inclined portion; 231-second flame hole; 232-supporting surface; 24-combustion chamber main body; 241-third flame hole; 242-combustion air inlet; 25-simulated solid fuel; 3-gasification device; 31-gasification chamber; 32-heating element; 33-cooling fin; 4-liquid supply device; 5-fuel tank; 6-controller; 7-decorative piece; 8-gas inlet pipe; 9-pebble; 10-ignition device; and 20-flame detecting device.DETAILED DESCRIPTION

[0027] For a better understanding of the content of the present invention, further description will be made below with reference to specific embodiments and the accompanying drawings. It should be understood that these embodiments are provided for further illustration of the present invention only and are not intended to limit the scope of the present invention. Further, it should be understood that after reading the content of the present invention, those skilled in the art may make some non-essential changes or adjustments to the present invention, which still fall within the scope of protection of the present invention as defined by the appended claims.Embodiment 1:

[0028] As shown in FIGS. 1 to 8, a fireplace for gasifying and burning fuel according to this embodiment includes a housing 1, a burner 2, a gasification device 3, a liquid supply device 4, a fuel tank 5, a controller 6, and a decorative piece 7. In this embodiment, the burner 2 is provided above the housing 1. The burner 2 is composed of a gas intake port 21, six horizontal portions 22, and three inclined portions 23. The inclined portions 23 are inclined upwardly at an angle ∠α with respect to the horizontal portions 22. In this embodiment, upwardly inclined angles ∠α of the three inclined portions 3 are different from each other, and are 46°, 55°, and 62°, respectively. In this embodiment, an upper surface of each horizontal portion 22 is horizontal, and a lower surface of the horizontal portion 22 has an upwardly inclined angle ∠β. In this embodiment, ∠β is 3° for all the horizontal portions 22. A lower end of each inclined portion 23 is connected and fixed to one end of a horizontal portion 22, and the other ends of all six horizontal portions 22 are connected to the combustion chamber main body 24 so that the other ends of the horizontal portions 22 are connected to each other, and the horizontal portions 22 are arranged around the circumference of the combustion chamber main body 24. In this embodiment, the spacing between any two of the horizontal portions 22 is the same, and the combustion chamber main body 24, the horizontal portions 22, and the inclined portions 23 each have an internally hollow structure and communicate with each other. The horizontal portions 22 are provided with a plurality of first flame holes 221, the inclined portions 23 are provided with a plurality of second flame holes 231, and the combustion chamber main body 24 is provided with a plurality of third flame holes 241. The gas intake port 21 is provided below the combustion chamber main body 24. The gas intake port 21 is connected to an outlet of the gasification device 3 through a gas inlet pipe 8 made of non-metal. The combustion chamber main body 24 is further provided with three combustion air inlets 242 through which combustion air can be supplemented for a middle region of the burner 2, and upper surfaces of the combustion air inlets 242 are higher than an upper surface of the combustion chamber main body 24. The gasification device 3 includes a gasification chamber 31 and heating elements 32, an inner cavity of the gasification chamber 31 is provided with cooling fins 33, and the heating elements 32 are provided below the inner cavity of the gasification chamber 31. The gasification device 3, the liquid supply device 4, and the controller 6 are all arranged inside the housing 1, and the fuel tank 5 is arranged outside the housing 1. An output port of the fuel tank 5 is connected to an inlet of the liquid supply device 4, and an outlet of the liquid supply device 4 is connected to an inlet of the gasification device 3. The controller 6 is matched and connected to the gasification device 3, the heating elements 32, and the liquid supply device 4. In this embodiment, the liquid supply means 4 is a constant delivery pump. The decorative piece 7 is provided at the periphery of the housing 1, the burner 2, and the fuel tank 5. The housing 1, internal components thereof, and the fuel tank 5 are hidden inside the decorative piece 7. The burner 2 is provided at a middle position of the decorative piece 7. The bottom of the burner 2 is provided and covered with pebbles 9, used to simulate the structure of a carbon bed after a real solid fuel is burned. The pebbles 9 may cover the combustion chamber main body 4 and / or the horizontal portions 2, so that it looks more beautiful and realistic as a whole, and only the burner 2, the pebbles 9, and the decorative piece 7 can be seen in the whole appearance. In this embodiment, three simulated solid fuels 5 are further included. Supporting surfaces 232 are provided on the inclined portions 23, and the simulated solid fuels 25 are fastened to the inclined portions 23, and supported and positioned by the supporting surfaces 232. Moreover, the simulated solid fuels 25 have textures and colors simulating real firewood.

[0029] In addition, in this embodiment, an ignition device 10 and a flame detecting device 20 are further included. The ignition device 10 is arranged close to the first flame holes 221, and the flame detecting device 20 is also arranged close to the first flame holes.

[0030] The operation process of the fireplace for gasifying and burning fuel according to this embodiment is as follows: During the operation of this embodiment, the controller 6 controls the liquid supply device 4 to draw the liquid fuel from the fuel tank 5 into the gasification device 3. The controller 6 controls the heating elements 32 to heat, so that the liquid fuel is gasified in the inner cavity of the gasification chamber 31. Then, the gasified fuel enters the interior of the burner 2 through the gas intake pipe 8, is diffused into the combustion chamber main body 24 and / or the interior of the horizontal portions 22 and the inclined portions 23, and further emitted from the third flame holes 241, the first flame holes 22 and the third flame holes 231. At this time, the controller 6 controls the ignition device 10 to ignite the gaseous fuel, and then flames are burning in each of the combustion chamber main body 24 and / or the horizontal portions 22 and the inclined portions 23, thereby forming a flame effect in a three-dimensional (3D) form. The flame detecting device 20 may detect the flame state of the burner 2 to ensure stable flame combustion. Moreover, the combustion air inlets 242 may be used to supplement the middle region of the burner with air required for combustion, so that the combustion is more complete and the flames are brighter.

[0031] In addition, the simulated solid fuels 25 are provided on the inclined portions 23, and the bottom of the burner 2 is provided with the pebbles 9 to cover the combustion chamber main body 24 and the horizontal portions 22, so that a user can see only the pebbles 9 and the simulated solid fuels 25 at the time of viewing for enjoyment, which is more harmonized and unified as a whole, making the flames more realistic like real firewood burning in a bonfire, which is warm and comfortable.

[0032] Comparative embodiment 2 (which is not according to the invention and is present for illustration purposes only): As shown in FIGS. 9 to 13, this comparative embodiment is different from Embodiment 1 described above in that the housing 1 is a cavity body having an internal furnace cavity 11, the burner 2 is provided in the internal furnace cavity 11 of the housing 1, the burner 2 of this embodiment has no combustion chamber main body, and only two horizontal portions 2 are arranged opposite to each other; and the two horizontal portions 2 are connected to each other to form one body, and the gas intake port 1 is provided below the horizontal portions 2. In this embodiment, the fuel tank 5 is also provided inside the housing 1 and below the burner 2.

[0033] A furnace door 13 with a flame observation opening 12 is further provided in front of the housing 1, so that the burner 2 and the flames burning thereon can be observed through the flame observation opening 12. A smoke exhaust device 14 is further provided at the back of the housing 1, and exhaust gas such as carbon dioxide generated by combustion can be exhausted to the outside through the smoke exhaust device 14.

[0034] The flame observation opening 12 may be directly hollow, and the furnace cavity 11 is in direct communication with the outside of the furnace door 13, so that heat diffusion is better performed. The flame observation opening 12 may also be provided with transparent glass, so that the carbon dioxide generated by the combustion does not diffuse through the flame observation opening 12 to the space where the use environment is located, and the heat generated by the combustion is not blocked too much.

[0035] The above description does not limit the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions, or substitutions may be made by those of ordinary skill in the art within the scope of the present invention as defined by the appended claims.

Claims

1. A fireplace for gasifying and burning fuel, characterized by: comprising a housing (1), a burner (2), a gasification device (3), a liquid supply device (4), a fuel tank (5), and a controller (6); the burner (2) is composed of a gas intake port (21), several horizontal portions (22), and several inclined portions (23), one end of each of the horizontal portions (22) is connected, and one end of each inclined portion (23) located at a lower position is connected and fixed to the other end of a horizontal portion (22); an output port of the fuel tank (5) is connected to an inlet of the liquid supply device (4), an outlet of the liquid supply device (4) is connected to an inlet of the gasification device (3), and an outlet of the gasification device (3) is connected to the gas intake port (21); the overall height of the gasification device (3) is lower than the overall height of the burner (2); the controller (6) is connected to the gasification device (3) and the liquid supply device (4); the horizontal portions (22) and the inclined portions (23) each have an internally hollow structure and communicate with each other, and the inclined portions (23) are inclined upwardly at an angle ∠α with respect to the horizontal portions (22); the gas intake port (21) is provided on bottom surfaces of the horizontal portions (22) and communicates with the interior of the horizontal portions (22); and the horizontal portions (22) are provided with several first flame holes (221), and the inclined portions (23) are provided with several second flame holes (231); and wherein: the number of horizontal portions (22) is greater than or equal to 3; the burner (2) further comprises a combustion chamber main body (24) connecting each of the horizontal portions (22) together; the combustion chamber main body (24) has a hollow structure and is provided in the middle of all the horizontal portions (22), and each of the horizontal portions (22) is arranged around the circumference of the combustion chamber main body (24), wherein spacing between any two of the horizontal portions (22) may be the same or different; the gas intake port (21) is provided on a bottom surface of the combustion chamber main body (24), the gas intake port (21) communicates with the interior of the combustion chamber main body (24), and the interior of the combustion chamber main body (24) communicates with the interior of the horizontal portions (22); and the combustion chamber main body (24) is provided with several third flame holes (241); and wherein the combustion chamber main body (24) is provided with several combustion air inlets (242).

2. The fireplace for gasifying and burning fuel according to claim 1, wherein: the upwardly inclined angle ∠α of each of the inclined portions may be the same or different, where ∠α is 20° to 80°.

3. The fireplace for gasifying and burning fuel according to anyone of the preceding claims, wherein: lower surfaces of the horizontal portions (2) each have an upwardly inclined angle ∠β, where ∠β is 1° to 10°.

4. The fireplace for gasifying and burning fuel according to anyone of the preceding claims, wherein: the burner (2) further comprises several simulated solid fuels (25) fastened to the inclined portions (23).

5. The fireplace for gasifying and burning fuel according to claim 4, wherein: the inclined portions (23) are provided with supporting surfaces (232), wherein the supporting surfaces (232) can support the simulated solid fuels (25).

6. The fireplace for gasifying and burning fuel according to anyone of the preceding claims, wherein: upper surfaces of the combustion air inlets (242) are higher than an upper surface of the combustion chamber main body (24).

7. The fireplace for gasifying and burning fuel according to anyone of the preceding claims, wherein: a bottom of the burner (2) is provided with pebbles (9) and / or crystal stones and / or crushed glass and / or simulated charcoal beds and simulated solid fuels for decoration, which are used to simulate the structure of a carbon bed after a real solid fuel is burned.

8. The fireplace for gasifying and burning fuel according to anyone of the preceding claims, wherein: the liquid supply device (4) is a liquid supply device that delivers a flow at a constant average speed.

9. The fireplace for gasifying and burning fuel according to anyone of the preceding claims, wherein: the gasification device (3) comprises a gasification chamber (31) and heating elements (32), an inner cavity of the gasification chamber (31) is provided with cooling fins (33), the heating elements (32) are provided below the inner cavity of the gasification chamber (31), and the heating elements (32) are connected to the controller (6).

10. The fireplace for gasifying and burning fuel according to anyone of the preceding claims, wherein: the fireplace comprises an ignition device (10) and a flame detecting device (20), the ignition device (10) is arranged close to the first flame holes (221) and / or the third flame holes (241), and the flame detecting device (20) is arranged close to the first flame holes (221) and / or the second flame holes (231) and / or the third flame holes (241).

11. The fireplace for gasifying and burning fuel according to anyone of the preceding claims, wherein: the gas intake port (21) is connected to the gasification device (3) through a gas intake pipe (8), and the gas intake pipe (8) is made of a non-metallic pipe.

12. The fireplace for gasifying and burning fuel according to anyone of the preceding claims, wherein: the burner (2) is provided above the housing (1); and the fireplace further comprises a decorative piece (7) which is provided at the periphery of the housing (1).