KR102621868B1 - Gas burner - Google Patents

Abstract

The present invention relates to a gas burner for cooking appliances.
An outer part closed at the top with a cap to provide one or more outer flame rings and having a plurality of outer flame ports for blowing out gas-air, and another cap closed at the top to provide an inner flame ring and spaced from the outer part and located in the center. A head consisting of an inner part with a plurality of flame ports that eject gas-air, an injector holder assembled on the top of the cooking appliance and partially spaced apart from the head, one or more venturi tubes disposed horizontally within the injector holder, and an injector holder. In the gas burner, which is fixed to the wall of the gas burner and includes one or more injectors that are spaced apart from the venturi tube and inject gas into the venturi tube, the upper surface of the injector holder is flat, and the one or more venturi tube diffusion portions are formed in the injector holder. Directly communicating with one expansion chamber, wherein the expansion chamber is in communication with the outer annular chamber of the outer part through one orthogonal vertical channel.
The present invention is a technology related to increasing the primary air of a burner, uniformizing the flame, and improving cleanability.

Description

Gas burner

The present invention relates to a gas burner for cooking appliances.

A gas burner for cooking appliances fixes an injector that sprays gas, closes the top with a cap to provide an injector holder for introducing primary air, and a flame ring, and discharges gas-primary air (hereinafter referred to as 'gas-air'). It is configured to include a head having a plurality of flame ports.

In order for the burner to burn gas, primary air and secondary air are needed. Primary air is air that flows in directly when gas is ejected, and secondary air is air supplied from the surroundings when a flame ring is formed. Burners must be properly supplied with primary and secondary air to achieve effective combustion and ensure safety.

Burners are classified as single, dual, or triple depending on the flame ring, and are classified as horizontal, inclined, or vertical depending on the direction of flame ejection.

A single burner is configured to have one or more flame rings in one venturi tube and is used with a 1-way valve. The dual burner consists of two or more venturi tubes and one head with an outer part that produces high heat power and a central inner part that produces low fire power, forming a double ring, and is a 2-way so that each flame ring can be adjusted separately. Used with valves. Triple burners are usually made by adding a flame ring to the inside of the outer part of the dual burner to create a triple ring. These burners are effectively used depending on the use and purpose, taking cooking into consideration.

The burner can be adjusted over a wide range of heat power, from high heat to low heat, for quick and diverse cooking. In this case, the burner must obtain sufficient primary and secondary air at high heat power to prevent incomplete combustion as much as possible.

In order to obtain high heating power, the burner must increase the primary air and secondary air in proportion to the amount of gas injected to improve combustibility and discharge the burned gas smoothly. Factors that significantly increase primary air and secondary air include injector structure, quantity and arrangement of venturi tubes, shape and size of venturi tubes, gas-air flow structure, arrangement of flame rings, and secondary air inflow structure and method. .

In particular, the gas-air flow structure needs to have the shortest distance to the head to increase the primary air volume. In other words, the gas-air flowing out of the venturi pipe receives minimal resistance from the passage and reaches the head that provides the flame ring directly. In this case, the gas-air flow may be deflected during the shortest structuring process, but uniformity of the flame is achieved.

Due to the burner's high heat power, during the cooking process, food often overflows the container, falls on the burner cap, seeps into the inside of the burner, or flows onto the upper surface of the injector holder. If the upper surface of the injector holder of this burner is complicated, it causes great inconvenience in cleaning. The area of the burner where food dripping from the burner flows needs to be kept simple for easy cleaning.

Patent No. 10-1887258 applies a pair of long horizontal venturi tubes to the injector holder to obtain thermal power, and places two branches of an arch-shaped channel without a partition at the rear end of the horizontal venturi tube and vertical channels at both ends of the branches. In addition, a cavity is placed on the upper surface of the injector holder to fix the injector in the cavity, block it from the surroundings to prevent food, etc. from entering, and apply a structure that allows primary air from the inner part to flow in through a certain passage.

The present invention is a technology related to increasing the primary air of a burner, uniformizing the flame, and improving cleanability.

The present invention minimizes the flow of gas-air obtained through the venturi effect in the burner to increase primary air, uniformize the flame, and simplify the structure to ensure a smooth flow of falling food and to show areas that may be contaminated. do.

According to the invention, this and further objects are realized in a gas burner for cooking appliances by technical means which incorporate the features disclosed in the independent claims and are described below simply by way of non-limiting example with reference to the accompanying drawings.

The effect of the present invention is to increase combustibility by increasing primary air, thereby securing high heating power of the burner and achieving uniformity of flame.

Another effect of the present invention is to flatten the burner area where falling food flows and to make the inside of the burner, which may be contaminated, visible, making cleaning easier.

1 is an overall view of a dual burner according to an embodiment of the present invention.
Figure 2 is a perspective view of the injector holder projecting the upper part of the injector holder of the dual burner
Figure 3 is a perspective view of the injector holder projecting the upper part of the injector holder of the double burner.
Figure 4 is a cross-sectional view of the dual burner injector holder on AA side.
Figure 5 is a cross-sectional view of the double burner injector holder BB side
Figure 6 is an inclined plan view with the outer part cap of the dual burner removed.
Figure 7 is an inclined plan view with the outer part cap of the double burner removed.
Figure 8 is an inclined plan view of the injector holder of the dual burner
9 is a plan view of the head including the outer parts of the dual and double burners.

The present invention is intended to illustrate specific embodiments in the drawings and describe in detail specific details for carrying out the invention. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. When describing each drawing, similar reference numerals are used for similar components.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

A single burner is a burner that consists of one or more flame rings in one venturi tube and is used with a 1-way valve. The outer part of the head produces high heat power and the central part produces low heat power. It includes a double burner consisting of the inner part of . A dual burner consists of two or more venturi tubes and one head with an outer part that produces high heat power and a central inner part that produces low heat power, forming a double ring and using a 2-way valve to control each flame ring. It is used with. In the present invention, a double burner refers to a burner having one horizontal Venturi tube in an injector holder, and a dual burner refers to a burner having two or more horizontal Venturi tubes in an injector holder.

Next, inventions related to increasing primary air, equalizing flame, and improving cleanability of a gas burner will be described in detail with reference to the attached drawings as examples.

1 is an overall diagram of a dual burner according to an embodiment of the present invention.

The dual burner has an injector holder (2) fixed to the top plate (1) of the cooking appliance by a fixing screw (4), and has a plurality of external flame ports (24, 25) that eject gas-air. A head (Head, 7) consisting of a part (5) and an inner part (6) spaced apart from the outer part (5) and having a plurality of flame ports that eject gas-air at the center is disposed on the injector holder (2), The first cap 8 and the second cap 9 are placed on the outer part 5 and the inner part 6 of the head 7, respectively, and are connected by a 2-way valve (not shown). This is a burner in which the flames of the outer part (5) and the inner part (6) are controlled respectively. In this regard, the double burner has a similar structure, but has a different shape and is a burner in which the flames of the outer part (5) and the inner part (6) are simultaneously controlled by a 1-way valve.

Figure 2 is a perspective view of the injector holder projecting the upper part of the injector holder of the dual burner.

The injector holder (2) is a combination of the upper part of the injector holder (2a) and the lower part of the injector holder (2b). The part that supplies gas-air to the outer part (5) of the head (7) is the gas inlet (10) and the injector. (13), cavity (14), venturi tube (15), expansion chamber (18) and vertical channel (19) are configured to maintain communication continuity (22) in that order. Another injector (16) and a venturi tube (17) arranged in pairs next to the venturi tube (15) are also configured to maintain communication continuity (22) through the same expansion chamber (18) and vertical channel (19). do.

Figure 3 is a perspective view of the injector holder projecting the upper part of the injector holder of the double burner.

The parts supplying gas-air to the outer part 5 of the head 7 include a gas inlet 51, an injector 52, a cavity 53, a venturi tube 54, an expansion chamber 55 and a vertical channel. (19) is configured to maintain communication continuity (22).

Figure 4 is a cross-sectional view of the injector holder A-A of the dual burner, and Figure 6 is an oblique plan view with the outer burner cap of the dual burner removed, showing the process of supplying gas-air to the outer part 5 of the head 7. .

The gas inlet 10 is disposed on the vertical outer wall of the injector holder 2 to allow gas that has passed through the valve and gas pipe (not shown) to flow into the injectors 13 and 16.

A pair of injectors 13 and 16 are arranged to be spaced apart and are arranged perpendicular to the outer wall to horizontally inject the gas flowing in from the gas inlet 10. The outlet diameters of the injectors 13 and 16 limit the amount of gas to be injected and thus determine the thermal power of the outer part 5.

The cavity 14 is disposed at regular intervals between the injectors 13 and 16 and the venturi tubes 15 and 17, and when gas is injected 20 from the injectors 13 and 16, the injector holder 2 It is an empty space between the upper part and the lower part of the head (7) (21) that allows primary air (α) to flow into the Venturi pipes (15, 17) together with the gas. The cavity 14 includes a top breather, which is closed at the bottom and open at the top, and a bottom breather, which is closed at the top and open at the bottom. Figure 4 shows an example of a top breather.

The Venturi tubes (15, 17) are composed of a pair and introduce primary air (α) through the Venturi effect by applying Bernoulli's equation. Because the Venturi pipe is placed vertically, which is opposite to the direction of gravity, is disadvantageous to the inflow of primary air, the Venturi pipe is placed horizontally to obtain high heating power by introducing more primary air. The venturi tubes (15, 17) are composed of an inlet (15a, 17a), a throat (15b, 17b), and a diffuser (15c, 17c). The center lines of the injectors (13, 16) and the venturi pipes (15, 17) are aligned horizontally so that the largest amount of primary air (α) flows into the venturi pipe.

The gas-air flow structure is set to the shortest distance to the head to increase the primary air volume. In other words, the gas-air flowing out of the venturi pipe receives minimal resistance from the passage and reaches the head that provides the flame ring directly. In this case, the gas-air flow may be deflected during the shortest structuring process, but uniformity of the flame is achieved. Each description below is a specific embodiment of the invention.

The expansion chamber 18 is placed directly at the Venturi tube outlets 15d and 17d so as to communicate with the Venturi tube diffusion portions 15c and 17c without passing through any channels or tunnels. This arrangement of the expansion chamber 18 reduces the resistance to the flow of gas-air discharged from the venturi tube as much as possible, allowing as much primary air (α) to flow into the expansion chamber 18 as possible.

The expansion chamber 18 increases the internal volume so that the gas-air passing through the venturi tube outlets 15d and 17d is quickly dispersed and rises directly into the vertical channel 19, and the outer flame ring 26 contributes to uniformity. However, since the vertical channel 19 is a single channel, it may result in deflection of the gas-air flow and impair flame uniformity. Accordingly, the expansion chamber 18 uses the lower part of the injector holder 2b farthest from the venturi tube outlets 15d and 17d as the distribution inclined surface 30 to smoothly distribute gas into the vertical channel 19 and the outer annular chamber 23. -Induces air flow and distribution. In addition, the distribution slope 30 is located closer to the venturi tube outlets 15d and 17d to change the flow of the gas-air to make the gas-air distribution in the outer annular chamber 23 more uniform. It may be possible.

As shown in Figure 8, the venturi tube outlets (15d, 17d) are directly adjacent to the expansion chamber (18) with partitions (31, 32) at the upper and lower parts (2a, 2b) of the injector or partitions (32) at the lower part (2b). In communication, the expansion chamber 18 may be in communication with the outer annular chamber 23 via one orthogonal vertical channel 19. This contributes to preventing the gas-air discharged from the venturi tubes 15 and 17 into the expansion chamber 19 from colliding with each other to form turbulence.

One vertical channel 19 is arranged directly above the expansion chamber 18 so that the gas-air reaching the expansion chamber 18 rises directly into the outer annular chamber 23 of the outer part 6. The cross-sectional area of the vertical channel (19) is the same size as the cross-sectional area of the expansion chamber (18) so that there is no gas-air flow resistance.

Figure 5 is a cross-sectional view of the injector holder B-B of the double burner, and Figure 7 is an oblique plan view with the outer part cap of the double burner removed, showing the process of supplying gas-air to the outer part 5 of the head 7. .

The gas inlet 51 is disposed on the vertical outer wall of the injector holder 2 to allow gas that has passed through the valve and gas pipe (not shown) to flow into the injector 52.

The injector 52 is disposed perpendicular to the outer wall to horizontally inject the gas introduced from the gas inlet 10. The outlet diameter of the injector 52 determines the thermal power of the outer part 5 because it limits the amount of gas to be injected.

The cavity 53 is disposed at regular intervals between the injector 52 and the venturi tube 54, and when gas is injected 56 from the injector 52, the upper part of the injector holder 2 and the head 7 It is an empty space that allows primary air (α) to flow into the lower part (57) and flow into the venturi pipe (54) together with the gas. The cavity 53 includes a top breather, which is closed at the bottom and open at the top, and a bottom breather, which is closed at the top and open at the bottom. Figure 5 shows an example of a top breather.

The Venturi tube (54) is composed of one unit and introduces primary air (α) through the Venturi effect by applying Bernoulli's equation. Because the Venturi pipe is placed vertically, which is opposite to the direction of gravity, is disadvantageous to the inflow of primary air, the Venturi pipe is placed horizontally to obtain high heating power by introducing more primary air. The venturi tube 54 consists of an inlet (54a), a throat (54b), and a diffuser (54c). The center lines of the injector 52 and the venturi pipe 54 are aligned horizontally so that the largest amount of primary air (α) flows into the venturi pipe.

The gas-air flow structure is set to the shortest distance to the head to increase the primary air volume. In other words, the gas-air flowing out of the venturi pipe receives minimal resistance from the passage and reaches the head that provides the flame ring directly. In this case, the gas-air flow may be deflected during the shortest structuring process, but uniformity of the flame is achieved. Each description below is a specific embodiment of the invention.

One expansion chamber 55 is placed directly at the Venturi tube outlet 54d to communicate with the Venturi tube diffusion portion 54c without passing through any channel or tunnel. This arrangement of the expansion chamber 55 reduces the resistance to the flow of gas-air discharged from the venturi tube as much as possible, allowing as much primary air (α) to flow into the expansion chamber 55 as possible.

The expansion chamber 55 increases the internal volume so that the gas-air passing through the venturi tube outlet 54d is quickly dispersed and rises directly into the vertical channel 19, and the outer flame ring 26 contributes to uniformity. However, since the vertical channel 19 is a single channel, it may result in deflection of the gas-air flow and impair flame uniformity. Accordingly, the expansion chamber 55 uses the lower part of the injector holder 2b farthest from the venturi tube outlet 54d as the distribution slope 30 to provide smooth gas-air flow to the vertical channel 19 and the outer annular chamber 23. induces the flow and distribution of In addition, the distribution slope 30 may be located closer to the venturi tube outlet 54d to change the flow of gas-air to make the gas-air distribution in the outer annular chamber 23 more uniform. .

One vertical channel 19 is arranged directly above the expansion chamber 55 so that the gas-air reaching the expansion chamber 55 rises directly into the outer annular chamber 23 of the outer part 6. The cross-sectional area of the vertical channel (19) is the same size as the cross-sectional area of the expansion chamber (55) so that there is no gas-air flow resistance.

As shown in Figures 4 and 5, the gas injected from the injectors (13, 16, 52) is the primary air (α ) is introduced to become gas-air, and the outer annular shape of the outer part 6 passes through the expansion chambers 18 and 55 directly in communication with the venturi tube outlets 15d, 17d and 54d and the vertical channel 19 immediately above them. Reach chamber 23. In this communication continuity (22), the distance, flow resistance, and vortex are minimized to increase the primary air (α) to improve the combustibility of the burner and secure the high heating power of the burner.

Figure 8 is an oblique plan view of the injector holder of the dual burner.

As shown in Figure 8, the upper surface of the injector holder (3) has a simplified structure so that it is flat without any depressions or cavities, so that it can be cleaned conveniently and cleanly without difficulty even if the food falls, and the gas is sprayed on the inner part (6). The injector 33 is positioned higher than the upper surface of the injector holder 3 to prevent falling food from contacting it. Meanwhile, the expansion chambers 18 and 55 have no channels or passages, so the entire bottom surface is visible, so falling food passes through the vertical channel 19 through the outer flame port 27 of the outer part 5. Even if it flows into the expansion chambers 18 and 55 and becomes contaminated, it can be cleaned without being unable to clean it or without having to dismantle it.

Figure 9 is a top view of the head including the outer parts of the dual and double burners.

The head (7) has an outer part (5), an inner part (6), a secondary air inlet (34) which is an open space between the outer part (5) and the inner part (6), and an outer part (5) from the inner part (6). It consists of a fire transfer flame port (28) and a fire transfer tunnel (29) that transfer fire to ).

The outer part 5 communicates with the outlet of the vertical channel 19 and consists of an outer annular chamber 23 for holding and distributing the gas-air and outer flame ports 24, 25 for blowing out the gas-air. As shown in Figures 4 and 5, the gas-air passing through the vertical channel 19 goes straight to the outer annular chamber 23 and is distributed to the main outer flame port 24 and the auxiliary outer flame port 25 of each part. Secondary air (27) is obtained to form the outer flame ring (26). In addition, the gas-air in the outer annular chamber 23 is blown out to the flame port (not shown) toward the inner part 6, which is inside the outer part 5, to form an additional flame ring (not shown), thereby forming a triple ring. This can be done with a triple burner.

Although several embodiments of the present invention have been shown and described, those skilled in the art will recognize that the present invention can be implemented in other specific forms without changing its technical spirit, scope, or essential features, and thus the above-described The embodiments are to be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

2: Injector holder 3: Injector holder upper surface
5: outer part 6: inner part
7: Head 8, 9: Cap
13, 16, 52: injector 14: common
15, 17, 54: Venturi tube 18, 55: Expansion chamber
19: vertical channel 23: outer annular chamber
24, 25: Outer flame port (main, auxiliary) 26: Outer flame ring
30: distribution slope 31, 32: partition

Claims (4)

A head consisting of an outer part with a plurality of outer flame ports and an inner part with a plurality of flame ports in the center spaced apart from the outer part and closed with a cap;
An injector holder that is assembled on the top of the cooking appliance, has at least a portion of the head spaced apart from the head, includes one or more venturi pipes spaced apart and horizontally arranged inside, and fixes an injector that introduces gas from the outside.
an expansion chamber in communication with the venturi diffusion portion of the one or more venturi tubes and in communication with the outer annular chamber through an immediately adjacent vertical channel; and
A gas burner comprising a distribution slope that slopes the end of the expansion chamber away from the venturi tube diffusion to allow gas-air to flow evenly through the vertical channel into the outer annular chamber. delete delete delete