EP3473928A1

EP3473928A1 - Radial flame plate and gas burner using same

Info

Publication number: EP3473928A1
Application number: EP17815611.3A
Authority: EP
Inventors: Young-Tack Hong
Original assignee: Daeshin Electric Industrial Co Ltd
Current assignee: Daeshin Electric Industrial Co Ltd
Priority date: 2016-06-20
Filing date: 2017-05-25
Publication date: 2019-04-24
Also published as: JP2019518188A; CN107949746A; EP3473928A4; CN107949746B; KR101740576B1; WO2017222198A1

Abstract

The present invention relates to a gas burner and, more particularly, to a gas burner which allows fuel gas, such as LPG or city gas, supplied from the outside and air to be mixed easily so that the fuel is completely burned and ejection pressure is increased at the same time, resulting in high efficiency of flame. To achieve the above object, the present invention is characterized by a flame plate having an inclined part, which is tapered inwardly in a manner such that a height thereof increases outwardly from a low central portion, and a plurality of ejection holes radially formed on the inclined part, wherein the plurality of ejection holes is formed at a predetermined angle at a center to a periphery.

Description

[Technical Field]

The present invention relates to a gas burner and, more particularly, to a gas burner which allows fuel gas, such as LPG or city gas, supplied from the outside and air to be mixed easily so that the fuel is completely burned and ejection pressure is increased at the same time, resulting in high efficiency of heating power.

[Background Art]

Generally, a gas burner is used at home or in restaurants, and, especially in the restaurants where a lot of dishes has to be cooked, a gas burner providing high efficiency of heating power is used rather than a gas range in order to reduce cooking time and thus provide dishes quickly.
Thus, a gas burner used in restaurants is configured to eject supplied fuel such as LPG or city gas, and, if fire is ignited with the ejected fuel, the fuel is burned and creates flame and the flame heats up a food container to cook food.
In this case, the gas burner used in restaurants is supplied with fuel of high pressure, unlike a gas range used at home, and, as the fuel is ejected through a flame hole provided on an upper portion of the burner, a bottom surface of a food container is heated up, thereby cooking food.
As illustrated in FIG. 1, an existing gas burner includes: a burner body 10 communicating with an inlet pipe 12, through gas and primary air are introduced, and integrally formed with an annular mixing chamber formed therein; and a flame plate 30 detachably seated on the burner boy 10 and having a main flame hole 34 and 36 and an auxiliary flame hole 35 to generate flame.
In this existing gas burner, fuel supplied through the inlet pipe 12 of the burner body 10 is ejected through the main flame hole 34 and 36 and the auxiliary flame hole 35 of the flame plate 30 through the mixing chamber of the burner body 10, and, if fire is ignited with the ejected fuel, flame is created and a food container is heated up using the flame, thereby cooking food.
However, the existing gas burner relies on pressure of fuel supplied through the inlet pipe 12, so it is inefficient since heating power is wasted to the outside of the container compared to a supplied amount of the fuel, and thus, a considerable amount of fuel is used but a cooking time is not reduced compared to the usage of fuel.
In addition, to completely burn gas, the gas should be mixed with external air, so, if a supplied amount of air is not adjusted using an air adjustment device, a great amount of carbon monoxide is generated due to incomplete burning of the gas, thereby causing harmful effects to a person who is cooking.
As a method for solving this existing problem, Korean Utility Model Registration No. 20-0309319 , titled "PREMIXED GAS BURNER" has been proposed.
Korean Utility Model Registration No. 20-0309319 (referred to as "Related Art 1") is configured to mix outdoor air and gas through a air passage formed at the center of the gas burner and eject flame of the gas through both inside and outside, thereby enhancing combustion efficiency of the gas and reducing an amount of carbon monoxide generated by incomplete combustion.
Although Related Art 1 causes outward ejected flame to be gathered toward the center of a container by inward ejected flame, rather than being wasted to the periphery of the container, but it fails to completely solve the above-described problem of the gas burner.
As another method for solving this problem, Korean Patent Registration No. 10-0901324 , titled "BURNER NOZZLE AND GAS BURNER IN USE WITH THE SAME BURNER NOZZLE" has been proposed.
Korean Patent Registration No. 10-0901324 (referred to as "Related Art 2") has a mountain-shaped protrusion formed on an upper surface of a bas burner, and a gas election hole provided in the mountain-shaped protrusion, and accordingly, flame of gas is gathered at the center of a bottom surface of a cooking container, thereby providing relatively efficient heating power.
Although Related Art 2 has an effect that flame of gas flows toward the bottom surface of the cooking container through the mountain-shaped protrusion formed on the upper surface of the gas burner, but heating power is determined by pressure of the gas and thus the heating power does hot have a great effect, and intensity of flame is determined by pressure of supplied gas, and therefore, Related Art 2 fails to be a solution for achieving higher efficiency.
That is, Related Arts 1 and 2 cause gas supplied from the outside to flow to a flame hole of a flame plate, provided on an upper portion of a gas burner, immediately after flowing into a body of the gas burner, and thus, Related Arts 1 and 2 have a low mixing rate of gas and air and fails to suggest a solution for increasing pressure of supplied gas and thus it is hard to expect further higher efficiency.

[Disclosure]

[Technical Problem]

The present invention has been made in view of the above problems, and provides a guide plate for guiding supplied gas to a gas inlet hole of a burner body, so that gas supplied from the outside flows in one direction in a mixing chamber of the burner body, enhancing a mixing rate of gas and air using a force of rotation in one direction.
In addition, the present invention provides a guide protrusion having a screw shape and formed on an inner wall of the mixing chamber of the burner body, so that a centrifugal force and a rotational force of gas flowing in one direction in the mixing chamber, thereby generating pressure higher than initial pressure of the gas.
In addition, the present invention provides a contact portion between the inner wall of the burner body and the guide protrusion is formed in an arch shape, thereby further improving a rotational force of gas moving in the mixing chamber.
In addition, the present invention provides a plurality of gas ejection holes formed one the flame plate to be inclined in one direction, so that a vortex is formed at the same time when gas is ejected with maintaining a centrifugal force generated in the mixing chamber, thereby causing flame to be gathered at a central portion of the flame plate.
In addition, the present invention provides the central portion of the flame plate recessed to form an inclined part in a funnel shape, thereby causing gas, ejected through the gas ejection holes, to be gathered at the central portion.

[Technical Solution]

In order to achieve the above objects, the present invention provides a flame plate having an inclined part, which is formed on an upper surface of the flame plate and tapered inwardly in a manner such that a height thereof increases outwardly from a low central portion, and a plurality of ejection holes radially formed on the inclined part, wherein the plurality of ejection holes are formed at a predetermined angle in one direction from a center to a periphery.
The plurality of ejection holes may be formed in a manner in which an incision part is inclined at the predetermined angle on an inner circumferential surface and an outer circumferential surface.
In addition, a gas burner includes: a burner body having an inlet pipe, a mixing chamber formed inside to communicate with the inlet pipe and having an opened upper portion, and a pipe-shaped coupling member formed in a central portion; and a flame plate seated to be coupled and fixed to a coupling member of the burner body, wherein a guide plate for guiding gas supplied from an outside to flow in one direction in the mixing chamber is provided in the inlet pipe.
Alternatively, a gas burner includes: a burner body having an inlet pipe, a mixing chamber formed inside to communicate with the inlet pipe and having an opened upper portion, and a pipe-shaped coupling member formed in a central portion; and a flame plate seated to be coupled and fixed to a coupling member of the burner body, wherein the inlet pipe is formed eccentric to one side of the burner body.
The guide plate may protrude toward the mixing chamber of the burner body and is formed to be inclined in one direction.
The guide plate may be provided on one inner side of the inlet pipe, or provided at as a pair of guide plates corresponding to each other on both inner sides of the inlet pipe.
Guide protrusions may protrude on an inner circumferential surface of the mixing chamber of the burner, and is formed in a screw shape.
A curved surface may be formed as an inclined surface or an arc-shaped surface on an upper portion or on upper and lower portions of a contact surface between the guide protrusions and the inner circumferential surface of the mixing chamber.
An inclination part, which is tapered inwardly such that a central portion is low and an outer portion is high, may be formed on the flame plate, and a plurality of ejection holes may be radially and outwardly formed in a long manner.
The plurality of ejection holes may be formed to be inclined in one direction so as to have a predetermined angle at a center of the flame plate.

[Advantageous Effects]

Configured as above, the present invention has a guide plate that guides gas, supplied through a gas inlet hole of a burner body, so as to allow the gas supplied from the outside to flow in one direction in a mixing chamber of the burner body, thereby improving a mixing rate of gas and air using a force of rotation in one direction.
In addition, a guide protrusion in a screw shape is formed on an inner wall of the mixing chamber of the burner body, thereby improving a centrifugal force and a rotational force of gas moving in one direction in the chamber and accordingly generating pressure higher than initial pressure of the gas.
In addition, a contact portion between the inner wall of the burner body and the guide protrusion is formed in an arch shape, thereby further improving a rotational force of gas moving in the mixing chamber.
In addition, a plurality of gas ejection holes is formed one the flame plate to be inclined in one direction, so that a vortex is formed at the same time when gas is ejected with maintaining a centrifugal force generated in the mixing chamber, thereby causing flame to be gathered at a central portion of the flame plate.
In addition, the central portion of the flame plate is recessed to form an inclined part in a funnel shape, thereby causing gas, ejected through the gas ejection holes, to be gathered at the central portion of the flame plate.

[Description of Drawings]

FIG. 1 is a view illustrating an existing gas burner.
FIG. 2 is an exploded perspective view of a gas burner according to the present invention.
FIG. 3 is a cross-sectional view of a gas burner according to the present invention.
FIGS. 4A and 4B are views illustrating a burner body of the present invention.
FIGS. 5A and 5B are views illustrating a flame plate of the present invention.
FIG. 6 is a view illustrating another embodiment of a gas burner of the present invention.
FIG. 7 is a view illustrating yet another embodiment of a gas burner of the present invention.

[Mode for Invention]

Hereinafter, a radial fame sheet and a gas burner using the same according to the present invention will be described with reference to the accompanying drawings.
FIG. 2 is an exploded perspective view of a gas burner according to the present invention, FIG. 3 is a cross-sectional view of a gas burner according to the present invention, FIGS. 4A and 4B are views illustrating a gas burner according to the present invention, and FIGS. 5A and 5B are views illustrating a flame plate according to the present invention.
As illustrated in FIGS. 2 to 5B, a radial flame plate and a gas burner 100 using the same according to the present invention include a burner body 110, and a flame plate 210 which is installed over the burner body 110, and which is configured to create a vortex of flame upon ignition of fire with ejected gas so that the flame is gathered at the central portion.
Here, the burner body 110 has an inlet pipe 112 through which gas and primary are introduced from the outside, a mixing chamber 114 in which the gas and the primary air introduced through the inlet pipe 112 are mixed to be ejected through the flame plate 210, and a coupling member 116 having a pipe-shaped passage 118 which is formed at a central portion to guide secondary air to a combustion part when the ejected gas is burn.
Thus, gas and air are introduced into the mixing chamber 114 through the inlet pipe 112, the gas and the air introduced into the mixing chamber 114 are mixed, a mixture thereof is ejected to the top through the flame plate 210 by pressure introduced through the inlet pipe 112, and food can be cooked using flame generated upon ignition of fire in this state.
Further, a guide plate 120 protruding toward the mixing chamber 114 to be inclined in one direction is formed at an end portion of one inner side of the inlet pipe 112 formed in the burner body 110, that is, an inner side of a contact portion between the mixing chamber 114 and the inlet pipe 112.
In this case, the guide plate 120 may be formed only at an end portion of one inner side of the inlet pipe 112, as illustrated in the drawing, or may be formed as a pair of guide plates corresponding to each other in both inner sides of the inlet pipe.
Thus, as gas and air supplied from the outside through the inlet pipe 112 are guided by the guide plate 120 and flow in one direction in the mixing chamber 114, a vortex is created in the course of the flowing of the gas and the air in one direction, and the gas and the air are mixed in the course of the flowing of the gas and the air in one direction.
In addition, a plurality of guide protrusions 130 each outwardly protruding and having a screw shape is formed on an inner circumferential surface of the mixing chamber 114 of the burner body 110.
In this case, an inclined surface 132 is formed on an upper portion or on upper and lower portions of a contact surface between the inner circumferential surface of the mixing chamber 114 and the guide protrusions 130 in order to prevent frictional resistance with gas that flows in one direction in the mixing chamber 114.
Thus, gas flowing in one direction in the mixing chamber 114 maximizes a vortex phenomenon according to the flowing direction by a centrifugal force and the guide protrusions 130 formed on the inner circumferential surface of the mixing chamber 114, and therefore, a mixing rate of gas and air is increased and pressure higher than pressure of gas introduced through the inlet hole 112 is generated.
In addition, the flame plate 210 has a coupling hole 212 which has a through hole 214 at a central portion to be coupled and fixed to the coupling member 116 of the burner body 110.
Thus, gas supplied to the mixing chamber 114 of the burner body 110 is ejected through the flame plate 210, and fire is ignited with the ejected gas to create frame using which food can be cooked. In this case, secondary air is introduced through the passage 118 of the coupling member 116 formed in the burner body 110, and the introduced secondary air is supplied as frame through the through hole 214.
Here, the flame plate 210 has an inclined part 216, which is tapered inwardly as a central portion is low and an outer portion, that is, a periphery portion is high, and a plurality of ejection holes 218 is radially and outwardly formed on the inclined part 216 in a long manner.
In this case, the plurality of ejection holes 218 is formed to be inclined in one direction so as to have a predetermined angle around the central portion of the flame plate 210.
That is, the plurality of through holes 218 is formed to be inclined in a direction identical to a direction in which gas flows in the mixing chamber 114 of the burner body 110.
Thus, since the ejection holes 218 formed on the flame plate 210 is inclined in a direction identical to a direction in which gas flows in the mixing chamber 114, the gas is ejected with high pressure while maintaining a centrifugal force generated in the course of the flowing of the gas in the mixing chamber 114, and, in the course of the ejecting of the gas through the ejection holes 218 formed to be inclined in one direction on the inclined part 216 formed over the flame plate 210, a vortex phenomenon is created thereby causing the gas to be gathered at a central portion, and, if fire is ignited with the gas in this state, flame is gathered at the central portion due to the vortex phenomenon and thus a central portion of a bottom surface of a cooking container is concentratedly heated up, thereby reducing a cooking time and maximizing heating power.
In addition, an incision part 219 is formed in association with the ejection holes 218 to be inclined at a predetermined angle on an outer circumferential surface of the flame plate 210 and inner circumferential surfaces of the through holes 214.
Meanwhile, the inner circumferential surfaces of the ejection holes 218 formed on the flame plate 210 are formed in a direction in which the ejection holes 218 are inclined, as shown in FIG. 5B, that is, the inner circumferential surfaces are in a direction identical to a direction in which gas flows in the mixing chamber 114.
Thus, as the inner circumferential surfaces of the ejection holes 218 are formed in a direction identical to a direction in which gas flows, the gas may be ejected without losing a rotational force of thereof, thereby creating a vortex.
Following is description about interaction between the above-described radial flame plate and the gas burner using the same according to the present invention.
In the gas burner 100 according to the present invention, gas and primary air are supplied to the mixing chamber 114 of the burner body 110 through the inlet pipe 112, and the gas and the air supplied to the mixing chamber 114 are guided by the guide plate 120 to flow in one direction in the mixing chamber 114 of the burner body 110, and a vortex is created in the course of the flowing of the gas in the mixing chamber 114.
In addition, the gas flowing in one direction in the mixing chamber 114 of the burner body 110 increases a rotational force thereof by the guide protrusions 130 formed in the inside of the mixing chamber 114.
As such, as the gas introduced into the burner body 110 flows by the guide plate 120 in one direction around the center in the mixing chamber 114 of the burner body 110, a centrifugal force is generated, and, in addition, the rotational force according to a flowing direction may increase by the guide protrusions 130 formed in the inside of the mixing chamber 114.
Thus, since the gas introduced into the burner body 110 flows in one direction in the mixing chamber 114 and the rotational force according to the flowing direction is increased by the guide protrusions 130 formed in the mixing chamber 114, a mixing rate of gas and air improves and the centrifugal force and the rotational force increase, thereby creating pressure higher than initial pressure of gas, that is, pressure of gas introduced through the inlet pipe 112.
As such, the gas having a centrifugal force and high pressure in the mixing chamber 114 of the burner body 110 is ejected through the ejection holes 218 formed on the flame plate 210, and, when fire is ignited with the ejected gas, flame is created and heats up a cooking container.
In this case, when the gas having the centrifugal force and high pressure generated in the mixing chamber 114 of the burner body 110 and high pressure is ejected through the ejection holes 218 of the flame plate 210, the gas is ejected through the ejection hole 218 formed to be inclined so as to have a predetermined angle in a direction identical to a direction in which the gas flows, and therefore, the gas may be ejected without losing the centrifugal force generated in the mixing chamber 114, thereby maximizing a vortex phenomenon of the ejected gas.
That is, when gas is ejected through the ejection holes 218 formed on the flame plate 210 to be inclined in a direction identical to a direction in which the gas flows in the mixing chamber 114, the gas is ejected through the ejection holes 218 with maintaining a centrifugal force and pressure which the gas has.
In addition, as an upper portion of the flame plate 210 forms the inclined part 216 to be inclined toward an inner central portion and the ejection holes 218 are formed on the inclined part 216, gas ejected through the ejection holes 218 may be gathered at a central portion, thereby maximizing thermal efficiency.
As such, in the gas burner 100 according to the present invention, a vortex is created as gas introduced into the mixing chamber 114 of the burner body 110 flows in one direction in the mixing chamber 114; a more stronger rotational force is generated in the flowing direction by the plurality of guide protrusions 130 each formed on an inner wall of the mixing chamber 114 and having a screw shape, thereby improving a mixing rate of gas and air; a rotational force of the gas is increased, thereby generating pressure higher than pressure that the gas has when supplied; the inclined part 216 is formed on the flame plate 210; the ejection holes 218 are formed on the inclined part 216 to be inclined in the flowing direction of the gas, and thus the gas is gathered at the central portion as a vortex is created when the gas is ejected through the ejection holes 218; and when the gas ejected through the ejection holes 218 is ignited, flame is gathered at the central portion, thereby preventing the gas from being dispersed to the outside and achieving high thermal efficiency.
FIG. 6 is a diagram illustrating another embodiment of a gas burner according to the present invention.
As illustrated in the drawing, a curved surface 134 in an arc shape is formed on an upper portion or on upper and lower portions of a contact surface between the inner circumferential surface of the mixing chamber 114 and the guide protrusions 130 in order to prevent frictional resistance with gas that flows in one direction in the mixing chamber 114.
As such, the above-described interaction with the gas burner according to the present invention is implemented in the same manner as described in the above example, and detailed description of the interaction will be herein omitted.
FIG. 7 is a diagram illustrating another embodiment of a gas burner according to the present invention.
As illustrated in the drawing, the inlet pipe 112 formed on one side of the burner body 110 is formed eccentric to one side of the burner body 110.
Thus, gas supplied to the maxing chamber 114 of the burner body 110 through the inlet pipe 112 formed eccentric to one side of the burner body 110 naturally flows in one direction in the mixing chamber 114, thereby creating a vortex.
As such, the interaction with the gas burner according to the present invention is implemented in the same manner as described in the above example, and detailed description of the interaction will be herein omitted.
Although preferred embodiments of a radial flame plate and a gas burner using the same according to the present invention have been described, the present invention is not limited thereto but it is intended to cover various modifications included within the spirit and scope of the appended claims, the detailed description, and the accompanying drawings.

Claims

A flame plate having an inclined part, which is formed on an upper surface of the flame plate and tapered inwardly in a manner such that a height increases outwardly from a low central portion, and a plurality of ejection holes radially formed on the inclined part, wherein the plurality of ejection holes are formed at a predetermined angle in one direction from a center to a periphery.
The flame plate of claim 1, wherein the plurality of ejection holes is formed in a manner in which an incision part is inclined at the predetermined angle on an inner circumferential surface and an outer circumferential surface.
A gas burner comprising:
a burner body having an inlet pipe, a mixing chamber formed inside to communicate with the inlet pipe and having an opened upper portion, and a pipe-shaped coupling member formed in a central portion; and

a flame plate seated to be coupled and fixed to a coupling member of the burner body,

wherein a guide plate for guiding gas supplied from an outside to flow in one direction in the mixing chamber is provided in the inlet pipe.
A gas burner comprising:
a burner body having an inlet pipe, a mixing chamber formed inside to communicate with the inlet pipe and having an opened upper portion, and a pipe-shaped coupling member formed in a central portion; and

a flame plate seated to be coupled and fixed to a coupling member of the burner body,

wherein the inlet pipe is formed eccentric to one side of the burner body.
The gas burner of claim 3, wherein the guide plate protrudes toward the mixing chamber of the burner body and is formed to be inclined in one direction.
The gas burner of claim 5, wherein the guide plate is provided on one inner side of the inlet pipe, or provided at as a pair of guide plates corresponding to each other on both inner sides of the inlet pipe.
The gas burner of claim 2 or 3, wherein a guide protrusion protrudes on an inner circumferential surface of the mixing chamber of the burner, and is formed in a screw shape.
The gas burner of claim 7, wherein a curved surface is formed as an inclined surface or an arc-shaped surface on an upper portion or on upper and lower portions of a contact surface between the guide protrusions and the inner circumferential surface of the mixing chamber.
The gas burner of claim 2 or 3, wherein an inclination part, which is tapered inwardly such that a central portion is low and an outer portion is high, is formed on the flame plate, and wherein a plurality of ejection holes is radially and outwardly formed in a long manner.
The gas burner of claim 9, wherein the plurality of ejection holes is formed to be inclined in one direction so as to have a predetermined angle at a center of the flame plate.