CN220303635U - Liquid fuel gasification burner - Google Patents

Abstract

The utility model discloses a liquid fuel gasification burner, which comprises a combustion chamber and a combustion heat insulation layer; the combustion chamber is formed by enclosing a combustion chamber upper surface, a combustion chamber lower surface, a combustion chamber side surface and a combustion chamber end surface, wherein the combustion chamber upper surface is provided with an air injection hole, the combustion chamber lower surface is of a funnel-shaped structure which is downwards sunken from two ends towards the middle, and an air inlet hole for supplying fuel is arranged at the lowest point of the combustion chamber lower surface. During ignition, condensed liquid fuel can flow back to the fuel supply device from the air inlet hole along the lower surface of the combustion chamber after gaseous fuel is introduced into the combustion chamber, so that a large amount of accumulated liquid is prevented from forming in the combustion chamber, a large amount of fuel is not formed to be suddenly sprayed out of the air injection hole after flame is ignited, stable ignition and flame ignition are ensured, and the ignition process of gasification and combustion of the liquid fuel is more controllable, stable and safe.

Description

Liquid fuel gasification burner

Technical Field

The utility model relates to the technical field of liquid fuel gasification burners, in particular to a burner used on a fireplace for liquid fuel gasification combustion.

Background

A liquid fuel fireplace is a type of natural fire fireplace that can replace traditional heat sources and is more environmentally friendly. Under ideal conditions, the liquid fuel fireplace with complete combustion can not discharge toxic and harmful substances to the external environment, can not generate strong smoke smell, does not need a special chimney or flue, and is favored by consumers.

In order to improve the combustion efficiency of the liquid fuel, the liquid fuel is fully combusted, and the liquid fuel is gasified first, and then the gasified liquid fuel is introduced into a combustor for combustion, for example, a fireplace for gasification and combustion of liquid fuel, which is disclosed in patent number CN201110219779.2, wherein the liquid fuel is gasified in a gasification chamber first, and then is introduced into the combustion chamber for combustion. However, the bottom surface of the liquid fuel gasification burner on the market is generally horizontal, and even the two ends of the burner have slight sagging due to processing errors, permanent deformation caused by heating and the like. Thus, when the burner is ignited, the flame is not combusted due to the gasified liquid fuel which is just introduced, the temperature of the burner is low, and the gaseous fuel is easy to be condensed again at the two ends of the combustion chamber, so that the accumulation of the liquid fuel is formed. At this time, once the flame is ignited, the burner is heated, and accumulated liquid at two ends of the burner is gasified again and sprayed out of the fire hole, so that a large amount of fuel is burnt rapidly in a short time, and the fuel is uncontrollable, so that potential safety hazard is formed.

Disclosure of Invention

First, the technical problem to be solved

The utility model aims to solve the problem of providing a liquid fuel gasification burner, so as to solve the problem that the use safety is affected by liquid fuel accumulated at two ends of the burner when the liquid fuel gasification burner is ignited in the prior art.

(II) technical scheme

In order to solve the technical problems, the utility model provides a liquid fuel gasification burner, which comprises a combustion chamber; the combustion chamber is formed by enclosing a combustion chamber upper surface, a combustion chamber lower surface, a combustion chamber side surface and a combustion chamber end surface, wherein the combustion chamber upper surface is provided with air injection holes, and the combustion chamber lower surface is of a funnel-shaped structure with two ends facing towards the middle and downwards concave.

Further, the lower surface of the combustion chamber comprises a first area and two second areas arranged at two ends of the first area, wherein the first area is the lowest plane area of the lower surface of the combustion chamber, and the second areas are areas extending outwards obliquely upwards from one end connected with the first areas.

Further, the front end and the rear end of the lower surface of the combustion chamber along the length direction of the lower surface of the combustion chamber are provided with side surfaces of the combustion chamber, the left end and the right end of the lower surface of the combustion chamber along the length direction of the lower surface of the combustion chamber are provided with end surfaces of the combustion chamber, the upper surface of the combustion chamber is arranged above the lower surface of the combustion chamber, and a space between the upper surface of the combustion chamber and the lower surface of the combustion chamber is matched with the side surfaces of the combustion chamber and the end surfaces of the combustion chamber to form the combustion chamber; wherein, in order to prevent the effusion formed on the upper surface of the combustion chamber from overflowing outwards, the top end of the side surface of the combustion chamber and the top end of the end surface of the combustion chamber are arranged higher than the top end of the upper surface of the combustion chamber.

Further, the liquid fuel gasification burner further comprises a combustion heat insulation layer, wherein the combustion heat insulation layer is buckled above the combustion chamber and clings to the upper surface of the combustion chamber, and two side edges of the combustion heat insulation layer wrap the side surface of the combustion chamber; the fire hole is arranged on the combustion heat insulation layer, the fire holes are in one-to-one correspondence with the positions of the air injection holes, and in order to avoid the influence of manufacturing and assembling errors, the size of the fire holes is larger than or equal to that of the air injection holes, namely, the outline of the fire holes completely covers the outline of the air injection holes.

Further, the top end of the side face of the combustion chamber is lower than the top end of the side face of the combustion heat insulation layer, namely, a space H is formed between the upper edge of the top end of the side face of the combustion chamber and the top end of the combustion heat insulation layer at intervals, and the space H is 1-10 mm so as to reduce heat transfer from the combustion heat insulation layer to the combustion chamber.

Further, the lower surface of the combustion chamber is provided with a plurality of air inlet holes, and the air inlet holes are arranged at the lowest point of the lower surface of the combustion chamber.

Further, the liquid fuel gasification burner further comprises a plurality of adapter joints, and the adapter joints are matched and fixed with the air inlet holes.

Further, a side fire hole is formed in the combustion heat insulation layer; when the gaseous fuel gasified by the liquid fuel from the gas injection hole in the combustion chamber does not all emerge from the fire hole, the gaseous fuel overflows and enters the inner side of the combustion heat insulation layer, and the overflowed gaseous fuel can continue to emerge from the side fire hole for combustion, so that the gaseous fuel is prevented from drifting into a product, and meanwhile, the gaseous fuel can be fully combusted. In addition, the air flow coming out of the side fire hole can also generate superposition effect on the air flow coming out of the fire hole, so that the flame during fuel combustion is more elegant and flexible.

Preferably, the fire holes are arranged along the length direction of the combustion heat insulation layer, and the side fire holes are arranged on the inner side surface of the combustion heat insulation layer and along the length direction of the combustion heat insulation layer.

Further, since the combustion heat insulation layer is in direct contact with flame, the temperature is higher, the size of the combustion heat insulation layer caused by thermal expansion and cold contraction is longer and more severe, and a certain gap is formed between the combustion heat insulation layer and the end face of the combustion chamber in order to prevent the combustion heat insulation layer from being deformed due to the change of heated size.

Further, for manufacturing and installation convenience, and prevent the thermal deformation distortion of combustion insulating layer itself, the combustion insulating layer is for adopting two sections or more than two section concatenation forms to constitute along length direction, can be the complete separation between each section, also can be by tiny connection structure to connect.

Further, the liquid fuel gasification burner further comprises an ignition device, which is arranged close to the fire hole.

Further, the liquid fuel gasification burner further includes a flame detection device disposed close to the fire hole, and the flame detection device is disposed away from the ignition device in order to enable the flame detection device to reliably detect that more fire hole flames are ignited.

Further, the liquid fuel gasification burner further comprises a temperature detection device which is arranged on the lower surface of the combustion chamber and can detect the temperature of the combustion chamber.

In the above technical scheme, the number is one or more than one.

The basic principle of the utility model is as follows:

when the utility model ignites, the gasification state fuel is introduced into the combustion chamber through the adapter, and the ignition needle is controlled to ignite, because the introduced gaseous fuel is insufficient at the beginning, the temperature of the combustion chamber is low enough to keep the fuel in the gaseous state continuously, partial gaseous fuel in the combustion chamber is condensed and accumulated on the lower surface of the combustion chamber, and because the lower surface of the combustion chamber is funnel-shaped, the air inlet hole is arranged at the lowest point, and the condensed liquid fuel flows back to the fuel supply device through the air inlet hole along the lower surface of the combustion chamber, so that a large amount of liquid fuel cannot be accumulated on the lower surface of the combustion chamber.

In addition, as gaseous fuel is continuously fed into the combustion chamber, a portion of less condensed fuel exits the gas orifices and exits at the fire holes to be ignited by the ignition device until all of the fire holes have flames. At this time, the combustion insulating layer is isolated, so that the temperature rising process of the combustion chamber can be slowed down, and a large amount of condensed liquid fuel is not accumulated in the combustion chamber, so that a large amount of fuel is not formed to be sprayed out of the air injection holes suddenly, the stable ignition and flame ignition are ensured, and the ignition process of the gasification combustion of the liquid fuel is more controllable, stable and safe. The flame detection device can detect the flame combustion state, so that stable combustion of the flame is ensured; the temperature detection device can detect the temperature of the combustion chamber and ensure that the temperature in the combustion chamber is in a controllable range.

(III) beneficial effects

Compared with the prior art, the utility model has the beneficial effects that:

according to the liquid fuel gasification burner provided by the utility model, the lower surface of the combustion chamber is divided into the funnel-shaped shape, and the air inlet hole is arranged at the lowest point, so that liquid fuel condensed in the combustion chamber at the beginning of ignition can flow back to the fuel liquid supply device, a large amount of liquid accumulation on the lower surface of the combustion chamber is avoided, flame ignition is avoided, the liquid accumulation on the lower surface of the combustion chamber is rapidly gasified after the temperature of the combustion chamber rises, the phenomenon that the flame suddenly rises is caused, the stable operation of ignition and flame ignition is ensured, and the ignition process of liquid fuel gasification combustion is more controllable, stable and safe.

Drawings

FIG. 1 is a schematic perspective view of a gasification burner for liquid fuel according to embodiment 1 of the present utility model;

FIG. 2 is a schematic view showing an exploded structure of a liquid fuel gasification burner according to embodiment 1 of the present utility model;

FIG. 3 is a schematic view showing a liquid fuel gasification burner in a longitudinal direction according to embodiment 1 of the present utility model;

FIG. 4 is an enlarged schematic view of section A of the liquid fuel gasification burner of example 1 of the present utility model;

FIG. 5 is a schematic view showing a liquid fuel gasification burner in cross section in the width direction according to embodiment 1 of the present utility model;

FIG. 6 is a schematic perspective view showing the lower surface of the combustion chamber in embodiment 1 of the present utility model;

FIG. 7 is a schematic perspective view of a gasification burner for liquid fuel according to embodiment 2 of the present utility model;

FIG. 8 is a schematic perspective view showing another view of a liquid fuel gasification burner according to embodiment 2 of the present utility model;

FIG. 9 is a schematic view showing a liquid fuel gasification burner in a longitudinal direction according to embodiment 2 of the present utility model.

The component names corresponding to the respective reference numerals in the drawings are:

1-a combustion chamber; 11-combustion chamber upper surface; 12-a combustion chamber lower surface; 121-a first region; 122-a second region; 13-combustion chamber side; 14-combustion chamber end face; 15-gas injection holes; 16-an air inlet hole; 2-a combustion insulating layer; 21-fire holes; 22-side fire holes; 3-adapter; 4-ignition means; 5-flame detection means; 6-temperature detecting device.

Detailed Description

For a better understanding of the present utility model, reference will be made to the following description of specific embodiments and accompanying drawings. It is to be understood that these examples are provided only for further illustration of the present utility model and are not intended to limit the scope of the present utility model. It should be further understood that after reading the description of the present utility model, those skilled in the art make some insubstantial changes or modifications to the present utility model, which still fall within the scope of the present utility model.

Example 1

As shown in fig. 1 to 6, a liquid fuel gasification burner of the present embodiment includes a combustion chamber 1 and a combustion insulating layer 2; the combustion chamber 1 is formed by encircling a combustion chamber upper surface 11, a combustion chamber lower surface 12, a combustion chamber side surface 13 and a combustion chamber end surface 14; the upper combustion chamber surface 11 is provided with gas injection holes 15, wherein the lower combustion chamber surface 12 is not a complete plane but a funnel-shaped structure recessed downwards from both ends towards the middle. Further, the lower surface 12 of the combustion chamber includes a first area 121, and two second areas 122 disposed at two ends of the first area 121, where the first area 121 is the lowest planar area of the lower surface 12 of the combustion chamber, and the second area 122 is an area extending obliquely upwards and outwards from an end connected to the first area 121. In this embodiment, the combustion insulating layer 2 is composed of three sections separated from each other, and is respectively fastened above the combustion chamber 1 and is tightly attached to the upper surface 11 of the combustion chamber, and two sides of the combustion insulating layer 2 wrap the side surface 13 of the combustion chamber; the fire holes 21 are arranged on the combustion heat insulation layer 2, the fire holes 21 are in one-to-one correspondence with the positions of the air injection holes 15, and in order to avoid the influence of manufacturing and assembly errors, the size of the fire holes 21 is larger than or equal to the size of the air injection holes 15, in this embodiment, the size of the fire holes 21 is larger than the size of the air injection holes 15.

In the present embodiment, the combustion chamber side surfaces 13 are provided at front and rear ends of the combustion chamber lower surface 12 along the length direction thereof, the combustion chamber end surfaces 14 are provided at left and right ends of the combustion chamber lower surface 12 along the length direction thereof, the combustion chamber upper surface 11 is provided above the combustion chamber lower surface 12, and a space between the combustion chamber upper surface 11 and the combustion chamber lower surface 12 cooperates with the combustion chamber side surfaces 13 and the combustion chamber end surfaces 14 to form the combustion chamber 1; wherein, in order to prevent the effusion formed on the upper surface 11 of the combustion chamber from overflowing outwards, the top end of the side surface 13 of the combustion chamber and the top end of the end surface 14 of the combustion chamber are arranged higher than the top end of the upper surface 11 of the combustion chamber; and the top end of the side face 13 of the combustion chamber is lower than the top end of the side edge of the heat insulating layer 2 of the combustion chamber, namely, a space H is formed between the upper edge of the top end of the side face 13 of the combustion chamber and the top end of the heat insulating layer 2 of the combustion chamber, and the space H is 3mm in the embodiment. In this embodiment, two adapter connectors 3 are further included, two air inlet holes 16 are provided in the first area 121 of the lower surface 12 of the combustion chamber, and the two adapter connectors 3 are respectively welded and fixed with the two air inlet holes 16 in a matching manner. The side fire holes 22 are arranged on the combustion insulating layer 2, when the gaseous fuel gasified by the liquid fuel from the air injection holes 15 in the combustion chamber 1 does not all emerge from the fire holes 21, the gaseous fuel overflows and enters the inner side of the combustion insulating layer 2, and the overflowed gaseous fuel can continue to emerge from the side fire holes 22 for combustion, so that the gaseous fuel is prevented from drifting into a product, and meanwhile, the gaseous fuel can be fully combusted. In addition, the air flow from the side fire hole 22 will also have a superposition effect on the air flow from the fire hole 21, so that the flame during the fuel burning will be more graceful and flexible. Preferably, the fire holes 21 are arranged along the length direction of the combustion insulating layer 2, and the side fire holes 22 are provided on the inner side surface of the combustion insulating layer 2 and are arranged along the length direction of the combustion insulating layer 22. Further, since the combustion insulating layer 2 is in direct contact with flame, the temperature is higher, the size of the combustion insulating layer 2 due to thermal expansion and contraction becomes longer and more severe, and in order to prevent the combustion insulating layer 2 from being deformed due to thermal dimensional change, a certain gap is further provided between the combustion insulating layer 2 and the combustion chamber end face 14.

In this embodiment, the liquid fuel gasification burner further comprises an ignition device 4, a flame detection device 5 and a temperature detection device 6. The ignition device 4 is arranged at the middle position of the combustion chamber 1, the flame detection device 5 is arranged at one side in the combustion chamber 1, and the ignition device 4 and the flame detection device 5 and the fire hole 21 form a straight line. The temperature detecting means 6 is arranged on the lower surface of the combustion chamber 1, and can detect the temperature of the combustion chamber 1.

The working process of the liquid fuel gasification burner in the embodiment comprises the following steps:

in operation of the present utility model, the gasified fuel is introduced into the combustion chamber 1 through the adapter 3, and the ignition device 4 is controlled to ignite, because the gaseous fuel introduced into the combustion chamber 1 is insufficient at the beginning, and is insufficient to be ignited by the ignition device 4, and the temperature of the combustion chamber 1 is low enough to maintain the fuel in a gaseous state continuously, part of the gaseous fuel in the combustion chamber 1 is condensed and accumulated on the lower surface 12 of the combustion chamber, and because the second area 122 is inclined, the condensed liquid fuel flows along the second area 122 to the first area 121, and the air inlet hole 16 is arranged in the range of the first area 121, the condensed liquid fuel flows back to the fuel supply device through the air inlet hole 16, and a large amount of liquid fuel is not accumulated on the lower surface 12 of the combustion chamber. In addition, since the gaseous fuel is continuously supplied to the combustion chamber 1, a part of the less condensed fuel is discharged from the gas injection holes 15, and is further discharged at the ignition holes 21 to be ignited by the ignition device 4 until all the fire holes 21 are discharged with flames. At this time, the combustion heat insulation layer 2 is isolated, the side 13 of the combustion chamber is far away from the combustion heat insulation layer 2, so that the temperature rising process of the combustion chamber 1 can be slowed down, and a large amount of condensed liquid fuel is not accumulated in the combustion chamber 1, so that a large amount of fuel is not formed to be suddenly sprayed out of the air spraying holes 15, the stable performance of ignition and flame ignition is ensured, and the ignition process of the gasification combustion of the liquid fuel is more controllable, stable and safe. The flame detection device 5 can detect the flame combustion state, ensure stable flame combustion, and immediately cut off fuel supply once abnormal conditions occur; the temperature detection device 6 can detect the temperature of the combustion chamber 1, ensure the temperature in the combustion chamber 1 to be in a controllable range, and ensure stable and safe combustion.

After the completion of ignition, as shown in fig. 4, since the combustion insulating layer 2 and the combustion chamber end face 14 are provided with a certain gap, deformation of the combustion insulating layer 2 is not caused even if the combustion insulating layer 2 is lengthened due to thermal expansion, and the appearance of the present embodiment is ensured to be flat. When the gaseous fuel in the combustion chamber 1 from the gas injection holes 15 does not all emerge from the fire holes 21, the gaseous fuel overflows and enters the inner side of the combustion insulating layer 2, and the overflowed gaseous fuel can continue to emerge from the side fire holes 22 for combustion, so that the gaseous fuel can be prevented from drifting into the product, and meanwhile, the gaseous fuel can be fully combusted.

Example 2

As shown in fig. 7 to 9, this embodiment is different from the above embodiment 1 in that the lower surface 12 of the combustion chamber has only two second areas 122, no first area 121, the two second areas 122 form a V shape, and only one air intake hole 16 and adaptor 3 are provided, and the air intake hole 16 is disposed at the connection portion of the two second areas 122, that is, the air intake hole 16 is disposed at the lowest point of the lower surface 12 of the combustion chamber. Then, in this embodiment, the combustion insulating layer 2 is composed of two sections separated from each other, and is respectively fastened above the combustion chamber 1.

The above description is not intended to limit the utility model, nor is the utility model limited to the examples described above. Variations, modifications, additions, or substitutions will occur to those skilled in the art and are therefore within the spirit and scope of the utility model.

Claims (11)

1. A liquid fuel gasification burner, characterized by: comprising a combustion chamber (1); the combustion chamber (1) is formed by enclosing a combustion chamber upper surface (11), a combustion chamber lower surface (12), a combustion chamber side surface (13) and a combustion chamber end surface (14); the upper surface (11) of the combustion chamber is provided with air injection holes (15), wherein the lower surface (12) of the combustion chamber is of a funnel-shaped structure which is downwards recessed from two ends towards the middle.

2. The liquid fuel gasification burner as set forth in claim 1, wherein: the lower surface (12) of the combustion chamber comprises a first area (121) and two second areas (122) arranged at two ends of the first area (121), wherein the first area (121) is the lowest plane area of the lower surface (12) of the combustion chamber, and the second areas (122) are areas extending obliquely upwards and outwards from one end connected with the first area (121).

3. The liquid fuel gasification burner as set forth in claim 1, wherein: the combustion chamber is characterized in that the combustion chamber side surfaces (13) are arranged at the front end and the rear end of the lower surface (12) of the combustion chamber along the length direction, the combustion chamber end surfaces (14) are arranged at the left end and the right end of the lower surface (12) of the combustion chamber along the length direction, the upper surface (11) of the combustion chamber is arranged above the lower surface (12) of the combustion chamber, and the space between the upper surface (11) of the combustion chamber and the lower surface (12) of the combustion chamber, the combustion chamber side surfaces (13) and the combustion chamber end surfaces (14) are matched to form the combustion chamber (1); wherein the top end of the side surface (13) of the combustion chamber and the top end of the end surface (14) of the combustion chamber are higher than the top end of the upper surface (11) of the combustion chamber.

4. A liquid fuel gasification burner in accordance with claim 3 wherein: the liquid fuel gasification burner further comprises a combustion heat insulation layer (2), wherein the combustion heat insulation layer (2) is buckled above the combustion chamber (1) and is clung to the upper surface (11) of the combustion chamber, and two side edges of the combustion heat insulation layer (2) wrap the side surface (13) of the combustion chamber; the fire hole (21) is formed in the combustion heat insulation layer (2), the positions of the fire hole (21) and the air injection holes (15) are in one-to-one correspondence, and the size of the fire hole (21) is larger than or equal to the size of the air injection holes (15).

5. The liquid fuel gasification burner as set forth in claim 4, wherein: the top end of the side surface (13) of the combustion chamber is lower than the top end of the side edge of the heat insulation layer (2), namely, a space H is formed between the upper edge of the top end of the side surface (13) of the combustion chamber and the top end of the heat insulation layer (2), and the space H is 1-10 mm.

6. The liquid fuel gasification burner as set forth in claim 1, wherein: the lower surface (12) of the combustion chamber is provided with a plurality of air inlet holes (16), and the air inlet holes (16) are arranged at the lowest point of the lower surface (12) of the combustion chamber.

7. The liquid fuel gasification burner as set forth in claim 4, wherein: and a side fire hole (22) is arranged on the combustion heat insulation layer (2).

8. The liquid fuel gasification burner as set forth in claim 4, wherein: the combustion heat insulation layer (2) and the combustion chamber end face (14) are provided with a certain gap.

9. The liquid fuel gasification burner as set forth in claim 1, wherein: the liquid fuel gasification burner further comprises an ignition device (4), the ignition device (4) being arranged close to the gas injection holes (15).

10. The liquid fuel gasification burner set forth in claim 9 wherein: the liquid fuel gasification burner further comprises a flame detection device (5); the flame detection device (5) is arranged close to the gas injection holes (15) and far away from the ignition device (4).

11. The liquid fuel gasification burner as set forth in claim 1, wherein: the liquid fuel gasification burner further comprises a temperature detection device (6), said temperature detection device (6) being arranged at the combustion chamber lower surface (12).