CN110195861B

CN110195861B - Surface combustion burner with backfire preventing structure

Info

Publication number: CN110195861B
Application number: CN201910126294.5A
Authority: CN
Inventors: 金相贤
Original assignee: Kovea Co ltd
Current assignee: Kovea Co ltd
Priority date: 2018-02-26
Filing date: 2019-02-20
Publication date: 2021-01-01
Anticipated expiration: 2039-02-20
Also published as: KR101895966B1; CN110195861A; TW201937108A; TWI691678B

Abstract

Disclosed is a surface combustion type burner having a backfire phenomenon preventing structure, characterized by comprising: a main body part formed of a supply part supplying fuel and an adjustment part formed at one side of the supply part to adjust an amount of the supplied fuel; a support part which is arranged on the upper side of the main body part and forms an accommodating space for accommodating fuel; and a combustion part disposed at an upper side of the support part and receiving a supply of fuel from the accommodating space to generate surface combustion, the supply part including a supply oil path communicating with a fuel tank, a mixture oil path communicating with the supply oil path to supply fuel to the accommodating space, and an air supply part supplying air to the mixture oil path, the burner further including a prevention structure disposed at an outer side of the air supply part to prevent a flame from flowing into the accommodating space, thereby preventing a backfire phenomenon to provide further improved safety and durability.

Description

Surface combustion burner with backfire preventing structure

Technical Field

The present invention relates to a burner, and more particularly, to a burner of a surface combustion type in a premixed combustion manner, which prevents a flashback phenomenon to enable a user to use more safely.

Background

In general, a portable gas burner is used by supplying fuel to the burner through a connection of a fuel tank, and a fuel stove cooks a portable cooker, a fire plate, or the like by placing it on the upper end of a main body and heating the cooker.

Recently, with the increase of various leisure life cultures such as fishing, camping, or leisure sports, there has been an increase in the time for outdoor activities and an increase in the chance of cooking in the field. There is an increasing demand from users for burners that can be used more easily and safely in the field.

In response to such user's demands, a premix combustion type surface combustion burner has been developed which can stably burn food in the open air and rapidly heat the food, but when the user erroneously determines the ignition position, there is a problem that a flame flows in through the air supply port and a backfire occurs.

Documents of the prior art

Patent document

(patent document 0001) Korean patent application No. 10-0732937 (application No. 2007, 06, 21)

(patent document 0002) Korean patent application No. 10-0224004 (application No. 1999, 07 Yue 12)

(patent document 0003) Korean laid-open patent No. 10-2015 0037945 (published 2015, 04 months and 08 days)

Disclosure of Invention

Problems to be solved

Embodiments of the present invention have been made to solve the above-mentioned problems, and an object thereof is to provide a surface combustion type burner with improved stability and durability to a user by preventing a flashback phenomenon in which the inside of the burner is burned using a simple prevention structure.

Means for solving the problems

In order to solve the above-mentioned problems, an embodiment of the present invention provides a surface combustion burner having a flashback preventing structure, including: a main body part formed of a supply part supplying fuel and an adjustment part formed at one side of the supply part to adjust an amount of the supplied fuel; a support part which is arranged above the main body part and forms a fuel supply path; and a combustion part which is arranged on the upper side of the supporting part, forms an accommodating space for accommodating fuel and generates surface combustion on the outer surface of the combustion part; the supply portion is formed of a supply oil passage communicating with a fuel tank, a mixture oil passage communicating with the supply oil passage and supplying fuel to the housing space, and an air supply portion supplying air to the mixture oil passage; the burner further includes a prevention member disposed outside the air supply part to prevent flame from flowing into the accommodation space.

The support portion includes: a support member disposed below the combustion section; an accommodating member fixed to an upper side of the support member, forming an insertion hole into which the mixing oil passage is inserted; and an oil passage member disposed inside the housing member and forming an oil passage for the fuel supplied through the mixture oil passage; the combustion portion is disposed above the housing member, and can form the housing space that communicates with the mixture passage.

The air supply portion is disposed outside the housing member so that the supply oil passage and the mixture oil passage communicate with each other, and an open portion into which air flows may be formed, and the preventing member may be formed so as to surround an outer side surface of the open portion.

The prevention structure can be formed of a mesh member.

The air supply portion may be formed in a cylindrical shape having an open circumferential surface, and a hook jaw portion for hooking and fixing the prevention member may be formed at one end of the cylindrical shape.

A blocking member may be further included, which is disposed between the supporting member and the combustion part in a manner of surrounding an outer side surface of an upper portion of the supply part, for blocking inflow of external impurities.

The blocking member is formed of a porous member.

One end of the supply oil passage is formed by one oil passage communicating with the fuel tank, and the other end is bifurcated into a pair, and the mixture oil passage and the air supply portion are respectively formed at the other ends of the pair of supply oil passages.

Effects of the invention

As described above, according to the solution to the problem of the present invention, the following various effects can be expected. However, the present invention is not all satisfied to exhibit the following effects.

The surface combustion type burner according to one embodiment has a flashback phenomenon prevention structure capable of preventing a flame from flowing in through an air inflow port even if a user erroneously determines an ignition position, thereby providing the user with more improved safety and durability.

Further, the open portions are formed on both sides of the air supply portion to maximize the inflow amount of air, so that stable combustion can be performed even in various external environments.

The grid plate formed in the etching process is used in the structure to prevent damage which may occur when an operator assembles the burner, and the connecting part is provided with a hanging and buckling jaw part, so that the operator can assemble the structure more easily.

Drawings

FIG. 1 is a perspective view of one embodiment of the present invention.

Fig. 2 is a perspective view of fig. 1 in a state in which a fuel tank is incorporated.

Fig. 3 is an exploded perspective view of fig. 1.

Fig. 4 is a view showing the moving direction of fuel and air in the section in the direction iv-iv of fig. 2.

Fig. 5 is a perspective view of the air supply unit of fig. 3 with a prevention structure disposed.

Fig. 6 is an exploded perspective view of fig. 5.

FIG. 7 is a view in section in the direction VII-VII of FIG. 5.

Fig. 8 is a perspective view of a state in which the supply part and the support part of fig. 3 are combined.

Fig. 9 is an exploded perspective view of the support part of fig. 8.

Fig. 10 is a perspective view of the combustion part of fig. 3.

Fig. 11 is an enlarged view showing a coupling relationship of the combustion plate and the receiving jaw of fig. 3.

Fig. 12 is a perspective view of the blocking member of fig. 3.

Detailed Description

Hereinafter, an embodiment of the surface combustion type burner having the flashback phenomenon prevention structure of the present invention will be described with reference to the accompanying drawings.

Fig. 1 is a perspective view of an embodiment of the present invention, fig. 2 is a perspective view of fig. 1 in a state where a fuel tank is combined, fig. 3 is an exploded perspective view of fig. 1, and fig. 4 is a view showing moving directions of fuel and air in a cross section in an iv-iv direction of fig. 1. Fig. 5 is a perspective view of the air supply unit of fig. 3 with a prevention structure disposed thereon, fig. 6 is an exploded perspective view of fig. 5, and fig. 7 is a cross-sectional view taken in the vii-vii direction of fig. 5. Fig. 8 is a perspective view of a state in which the supply part and the support part of fig. 3 are combined, fig. 9 is an exploded perspective view of the support part of fig. 8, fig. 10 is a perspective view of the combustion part of fig. 3, fig. 11 is an enlarged view showing a combination relationship of the combustion plate and the receiving jaw of fig. 3, and fig. 12 is a perspective view of the blocking member of fig. 3.

Referring to fig. 1 to 12, a surface combustion burner (10) having a flashback phenomenon prevention structure according to an embodiment of the present invention is characterized by comprising: a main body part (100) formed of a supply part (120) that communicates with a fuel tank (110) and supplies fuel, and an adjustment part (130) that is formed on one side of the supply part (120) to adjust the amount of fuel supplied; a support part (200) which is formed on the upper side of the main body part (100) and forms a containing space for containing fuel; and a combustion unit (300) disposed above the support unit (200) to receive a supply of fuel from the housing space and generate combustion, wherein the supply unit (120) includes a supply oil path (121) communicating with the fuel tank, a mixture oil path (123) communicating with the supply oil path (121) and supplying fuel to the housing space (223), and an air supply unit (122) supplying air to the mixture oil path (123), and further includes a structure (400) disposed outside the air supply unit (122) and preventing flame from entering the housing space (223).

The main body part (100) includes a supply part (120) connected to the fuel tank (110) to supply fuel and an adjustment part (130) to adjust the amount of the supplied fuel. A fuel tank (110) is connected to one side of the supply section (120) to supply fuel through a supply oil passage (121).

The supply unit (120) includes a supply oil path (121), an air supply unit (122), and a mixture oil path (123). The supply oil passage (121) communicates with a fuel discharge port of the fuel tank (110) to receive fuel supply. At this time, it is preferable that one end of the supply oil path (121) connected to the fuel discharge port is formed as one oil path, and the other end is formed by a bifurcated pair of branches. This is to facilitate mixing of the fuel and the air flowing in through the air supply portion (122) and to provide stable combustion.

The air supply section (122) includes a connection section (1221), an open section (1222), a guide section (1223), and a communication section (1224), and the air supply section (122) has a cylindrical shape with one side surface open to supply fuel and air to the mixing oil path (123) together.

The connection part (1221) is formed to protrude outward on the other side surface not opened, and is connected to the oil supply passage (121). At this time, the end of the protruding connection part (1221) is formed with a screw thread to enable easier connection with the oil supply passage (121). Further, a fuel supply hole (1226) communicating with the opening portion (1222) is formed along the center of the connecting portion (1221).

As shown in fig. 6, the fuel supply hole (1226) is preferably formed so that the cross-sectional area thereof is sharply reduced at a portion connected to the opening portion (1222). As a result, the supplied fuel is discharged through the fuel supply holes (1226) and the speed is increased, so that a negative pressure is locally formed in the open part (1222) to make the inflow of the outside air easier.

The opening portion (1222) is formed to be open in the circumferential surface of the air supply portion (122) so that air can flow in from the outside. At this time, most of the circumferential surface is opened to maximize the amount of air flowing in, and a guide section (1223) is formed so as to penetrate the opening section (1222) so that the connection section (1221) and the communication section (1224) can be connected.

The guide section (1223) connects the open one side surface and the other side surface, and enables the air supply section (122) to be formed integrally. Thus, the guide portions (1223) are preferably formed as a pair opposing each other.

The communicating part (1224) is formed in an open manner so that the fuel flowing into one side surface of the air supply part (122) through the fuel supply hole (1226) and the air flowing into the open part (1222) can be supplied to the mixing oil path (123) together.

Further, a hooking jaw (1225) is further formed to protrude along the outer surface of the communication part (1224) to enable easier arrangement of the prevention structure, thereby enabling an operator to assemble the burner (10) more easily while preventing the structure from slipping during use to improve durability. Therefore, the protruding degree of the hooking jaw (1225) is preferably formed to be the same as the thickness of the prevention structure.

The mixing oil path (123) is formed in a cylindrical shape with both side surfaces open, and the length of the mixing oil path is longer than that of the air supply part (122), so that the fuel and the air supplied through the communication part (1224) can be uniformly mixed while moving along the mixing oil path (123). Thus, the open one side surface is communicated with the communication portion (1224), and the open other side surface is communicated with the housing space (223) along the oil path formed by the oil path member (230).

At this time, the air supply part (122) and the mixing oil path (123) are formed in a pair and are respectively arranged at the other ends of the supply oil paths (121) which are formed in a pair by being branched. Thus, the amount of air supplied and the mixing space are increased, thereby uniformly mixing the air and the fuel to provide stable combustion.

The adjusting part (130) is formed on one side of the supplying part (120) and adjusts the amount of fuel supplied to the supplying part (120). Therefore, the adjusting part (130) is formed to be distributed on the inner side and the outer side of the supplying part (120) and is formed to protrude outwards, so that the operation of a user can be easily performed.

The user rotates the adjusting part (130) protruding to the outside of the supplying part (120) to the left and right direction to adjust the size of the space connected with the fuel discharging port and the fuel supplying part (120), thereby easily and finely adjusting the amount of the supplied fuel. Thereby providing stable combustion under various environments.

The prevention structure (400) is formed in a ring shape and is disposed so as to surround the outer side surface of the open section (1222). At this time, the prevention structure (400) is formed as a mesh structure having a plurality of holes. The grid structure prevents fuel from flowing into the opening (1222) by forming a plurality of holes in a pattern with a certain interval. At this time, the hole pitch and size of the mesh structure can be changed according to design.

In other words, the structure prevents the open part (1222) from supplying external air, and prevents the fuel from flowing into the open part (1222), so as to prevent the phenomenon of combustion, namely the backfire phenomenon, in the combustor (10).

The backfire phenomenon occurs when the user erroneously determines the ignition position, fuel to flow downward flows in through the opening portion (1222), and flame flows into the interior of the burner (10) along the communication portion (1224). At this time, air flows in through the opening part (1222) at the same time, and fuel is supplied through the supply oil path (121) to continuously perform combustion.

Since the surface combustion type burner (10) of the present invention has the preventing structure (400) of the outer side surface of the opening portion (1222) into which the flame cannot flow through the air, there is no limitation in supplying the air to the inside of the burner (10) and the backfire phenomenon is prevented, thereby providing more improved safety to the user. In addition, when the backfire phenomenon occurs, the internal structure of the burner (10) is heated and thermal damage and the like may occur, so the present invention also improves the durability of the burner (10).

The support section (200) includes a support member (210), an accommodating member (220), and an oil passage member (230), and is disposed on the upper side of the main body section (100) to accommodate the supply section (120) and support the combustion section (300).

The support member (210) is disposed between the fuel tank (110) and the supply section (120), and one side thereof is formed so as to extend toward the fuel tank (110) for the user to grasp. Further, the user can easily attach and detach the burner (10) to and from the fuel tank (110).

In addition, external impurities are prevented from flowing into a lower space of the support member (210), thereby preventing internal damage of the burner (10) caused by the impurities, and the other side is formed to be wider than the one side to stably support the combustion part (300).

A hole is formed in the lower surface of the support member (210) so as to penetrate the fuel supply unit (120), and an internal space is formed to accommodate the fuel supply unit (120), the accommodating member (220), and the oil path member (230). In addition, support protrusions (211) are formed at certain intervals to support the receiving member (220).

The support projection (211) is in contact with a support jaw (321) formed on the lower side of the support plate (320) of the combustion part (300) so that the receiving member (220) can be disposed on the lower side of the support member (210) at a predetermined interval. Thus, the supply oil path (121) is easily connected to the air supply portion (122), and the mixing oil path (123) is formed longer to uniformly mix the fuel and the air, thereby providing more stable combustion.

The housing member (220) is formed with a housing space (223) which houses the mixing oil path (123) and the oil path member (230) and is open on the upper side thereof, and an insertion hole (221) is formed on one side of the housing space (223) corresponding to the position of the air supply portion (122) so that the air supply portion (122) can communicate with the mixing oil path (123). Furthermore, an accommodating jaw (222) protruding outward is formed along the outer peripheral surface of the opened upper side.

The insertion holes (221) are formed as a pair spaced from each other, the air supply section (122) is disposed outside the insertion holes (221), and the mixing oil passage (123) is disposed inside the insertion holes (221) and communicated with each other through the insertion holes (221).

The receiving jaw (222) is formed to protrude outward along the opened upper outer peripheral surface, and the cross section thereof is formed to have a T-shape, forming a predetermined space protruding outward. At this time, the lower side portion of the combustion plate (310) is received and supported in a predetermined space protruding outward. Further, the outer side surface of the receiving jaw (222) abuts against the inner surface of the supporting jaw (321) of the supporting plate (320), the outer surface of the supporting jaw (321) abuts against the upper surface of the supporting protrusion (211), and the supporting portion (200) and the combustion portion (300) are connected to and supported by each other.

The accommodating space (223) is opened at the upper side, but is blocked from the outside by a combustion plate (310) arranged at the upper side of the accommodating member (220). At this time, the lower side of the circumferential surface of the combustion plate (310) is projected and accommodated in the accommodating jaw (222), and outflow of the fuel and air mixture is minimized.

A mixing oil passage 123 and an oil passage member 230 are disposed in the housing space 223, and the open upper side is blocked from the outside by being housed and supported on the lower side of the combustion plate 310 housing the jaw 222. Thereby, the fuel and air mixture supplied from the mixture oil path (123) is accommodated to the accommodation space (223) along the oil path formed by the oil path member (230) and supplied to the combustion portion (300).

The oil passage member (230) is formed of a 1 st shielding plate (231) and a 2 nd shielding plate (232) formed perpendicular to each other, and is disposed in the accommodating space (223) to form an oil passage through which a mixture of fuel and air supplied from the mixture oil passage (123) moves.

A1 st shielding plate (231) is disposed in front of the mixing oil passage (123) so as to be perpendicular to the discharge direction of the fuel-air mixture supplied from the mixing oil passage (123), and a 2 nd shielding plate (232) is formed so as to extend vertically above the 1 st shielding plate (231). At this time, the lower side surface of the 1 st shielding plate (231) is formed to be separated from the receiving member (220) to form an oil path capable of moving the fuel and air mixture.

Next, as shown in fig. 4, the fuel-air mixture supplied from the mixture oil passage (123) moves downward and upward by the 1 st shutter (231) and the 2 nd shutter (232). At this time, the 2 nd shielding plate (232) is formed to be spaced apart from the lower side surface of the combustion plate (310) to be able to supply the fuel and air mixture to the entire lower side surface of the combustion plate (310).

The combustion part (300) includes a combustion plate (310) and a support plate (320), and is disposed on an upper side of the support part (200) to form an accommodation space (223) distinguished from the outside.

The combustion plate (310) is formed such that the lower side of the side surface protrudes further than the upper side, and the protruding lower side is received in the support jaw (321) to block the open upper side of the receiving space (223) from the outside. Further, the cross section of the combustion plate (310) is curved, being formed higher at the center than at both ends.

Thus, the size of the receiving space (223) formed inside is increased, so that more stable combustion can be provided, and the fuel and air mixture can be easily circulated along a curved surface to be uniformly supplied to the combustion plate (310).

The support plate (320) is formed with a support jaw (321) which protrudes inward along the inner peripheral surface in an annular manner with the center portion open. At this time, the upper surface of the support jaw (321) is in contact with the accommodating jaw (222) of the accommodating member (220), and the lower surface of the support jaw (321) is in contact with the upper surface of the support projection (211), so that the combustion plate (310) can be disposed above the support section (200).

The blocking member (500) is formed in a ring shape so as to surround the outside of the supply part (120) and the housing member (220), and the blocking member (500) is formed of a porous member to prevent impurities from flowing into the inside of the combustor (10). Thus, a groove is formed on the outer circumferential surface of the support plate (320) and the upper outer circumferential surface of the support member (210) to support the upper and lower sides of the fixing blocking member (500).

At this time, the blocking member (500) is used to prevent impurities such as insects, fallen leaves, etc. from flowing into the inside of the burner (10) and from being damaged inside the burner (10) by the external environment, unlike the prevention structure, and there is no limitation on the size or pattern of the holes formed.

As described above, the surface combustion burner (10) of the present invention has both a prevention structure and a blocking member (500) to doubly block impurities of air flowing into the inside of the burner (10) and to prevent flame from flowing in through the air supply part (122) by the prevention structure. Thus, a surface combustion burner (10) that can be used more safely in various environments is provided.

The preferred embodiments of the present invention have been described above by way of example, but the scope of the present invention is not limited to only such specific embodiments, and appropriate modifications may be made within the scope described in the patent claims, which are intended to be included within the scope of the present invention.

Description of the reference symbols

10 burner 100 main body 110 fuel tank

120 supply part 121 supply oil path 122 air supply part

1221 connecting part 1222 opening part 1223 guide part

1224 communication portion 1225 hook jaw 1226 fuel supply hole

123 mixed oil path

130 adjusting part 200 supporting part 210 supporting member

211 supporting protrusions 220 receiving members 221 insert into holes

222 accommodating jaw 223 accommodating space 230 oil passage member

231 st 1 shutter 232 nd 2 shutter 300 combustion section

310 combustion plate 320 support plate 321 support jaw

400 prevention structure 500 blocking member

Claims

1. A surface-combustion burner having a flashback phenomenon preventing structure, comprising:

a main body part formed of a supply part supplying fuel and an adjustment part formed at one side of the supply part to adjust an amount of the supplied fuel;

a support part which is arranged above the main body part and forms a fuel supply path; and

a combustion part which is arranged on the upper side of the supporting part, forms a containing space for containing fuel, generates surface combustion on the outer surface of the combustion part,

the supply section is formed of a supply oil passage communicating with a fuel tank, a mixture oil passage communicating with the supply oil passage and supplying fuel to the housing space, and an air supply section supplying air to the mixture oil passage,

the burner further includes a prevention member disposed outside the air supply part to prevent flame from flowing into the accommodation space.

2. The surface-combustion type burner with the flashback phenomenon preventing structure according to claim 1, wherein:

the support portion includes:

a support member disposed below the combustion section;

an accommodating member fixed to an upper side of the support member, forming an insertion hole into which the mixing oil passage is inserted; and

an oil passage member disposed inside the housing member and forming an oil passage for the fuel supplied through the mixture oil passage,

the combustion portion is disposed above the housing member, and forms the housing space communicating with the mixture passage.

3. The surface-combustion type burner with the flashback phenomenon preventing structure according to claim 2, wherein:

the air supply portion is disposed outside the housing member so that the supply oil passage and the mixture oil passage communicate with each other and forms an open portion into which air flows,

the prevention member is formed in a manner to surround an outer side surface of the open portion.

4. The surface-combustion type burner with the flashback phenomenon preventing structure according to claim 1, wherein:

the prevention structure is formed of a mesh structure.

5. The surface-combustion type burner with the flashback phenomenon preventing structure according to claim 1, wherein:

the air supply part is formed in a cylindrical shape with an open circumferential surface, and a hook jaw part for fixing the preventing member by a hook is formed at one end of the cylindrical shape.

6. The surface-combustion type burner with the flashback phenomenon preventing structure according to claim 2, wherein:

and a blocking member disposed between the supporting member and the combustion part in a manner of surrounding an outer side surface of an upper portion of the supply part, for blocking inflow of external impurities.

7. The surface-combustion type burner with the flashback phenomenon preventing structure according to claim 6, wherein:

the blocking member is formed of a porous member.

8. The surface-combustion type burner with the flashback phenomenon preventing structure according to claim 1, wherein:

one end of the supply oil path is formed by one oil path communicated with the fuel tank, and the other end is branched into a pair,

the mixing oil passage and the air supply portion are formed at the other end of the pair of supply oil passages, respectively.