KR102629557B1 - Stacked gas burner - Google Patents

Abstract

The present invention relates to a gas burner for cooking appliances.
A gas burner for cooking appliances, which includes a head with multiple flame ports that eject gas-air in a vertical direction, a cup located at the bottom of the head to store gas-air, and a cup connected to the outer wall of the cup to introduce gas-air through a venturi effect. A vertical flame ejection gas burner including an injector holder holding one or more venturi tubes that mix and flow the gas into the cup, and one or more injectors that are spaced apart from the venturi tube and inject gas into the venturi tube, between the head and the cup. It includes a distribution plate that is stacked and communicates with the flame port and disposed with a distribution port for distributing gas-air to the flame port.
The present invention stacks a distribution plate between the head and cup of a vertical flame ejection burner to increase the area of the flame port, thereby increasing primary air and fire power and preventing lifting and backfire.

Description

Stacked gas burner

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

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

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

Burners are classified into inclined, vertical, or horizontal types depending on the direction of flame ejection. Considering appropriate combustibility, efficiency, and cleanability, burners that eject in an inclined direction are widely used, and burners that eject flame in a vertical direction (hereinafter referred to as vertical flame ejection burners) may have lower combustibility and cleanability, but can increase efficiency. Used as needed. In other words, when placing a cooking vessel on a vertical flame ejection burner, if there is no clear waste gas flow path, the waste gas in the center may deteriorate combustibility, and the food overflowing from the cooking vessel may flow into the flame port and block the hole in the flame port. However, since the flame direction of a vertical flame jet burner is vertical, it can directly heat the bottom of the cooking vessel and reduce heat escaping outside the cooking vessel, thereby increasing efficiency.

Existing vertical flame ejection burners combine a cup that stores gas-air and a cap with a flame port to eject gas-air vertically. In this method, there is no means to slow down the gas-air flow when the gas-air is ejected, so the flame is prone to lifting from the flame port. Therefore, the area of the flame port is reduced and the spacing between the flame ports is made tight, preventing flame propagation between flames. Do this to prevent lifting. If you increase the heating power by increasing the amount of gas when the spacing between the flame ports is tight, the length of the flame increases due to flame agglomeration, and incomplete combustion is likely to occur, making it difficult to increase the heating power. Additionally, if the area of the flame port is increased to increase fire power, in addition to lifting, backfire, where the flame burns into the burner and forms a flame in the injector, may easily occur.

Publication number 10-2012-0013326 relates to a vertical flame ejection burner that ejects gas-air by combining a cup storing gas-air and a cap with flame ports. Small flame ports are densely arranged in three rows on the outside. This is the case.

Although the structure is different from the vertical flame ejection burner, burners with multiple or single flame ports arranged horizontally on the inner wall of the center (internal multiple/singular flame port burner) have a larger flame port area. This increases the primary air and fire power, and prevents lifting by allowing the flames of the flame ports to insulate each other. The method of arranging multiple flame ports increases the size of the burner, but the method of arranging a single flame port achieves appropriate fire power and burner size. CN 201448882 U can be considered an example of an internal single flame port burner.

The present invention stacks a distribution plate between the head and cup of a vertical flame ejection burner to increase the area of the flame port like an internal multiple flame port burner, thereby increasing primary air and fire power and improving lifting, backfire, and flame between flames. Implement a burner that prevents agglomeration.

The present invention increases the primary air and fire power by increasing the area of the flame port in the vertical flame ejection burner and prevents lifting, backfire, and flame agglomeration.

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 secure combustibility to increase primary air and fire power in a stack gas burner and prevent lifting, backfire, and flame agglomeration.

Another effect of the present invention is to solve combustibility in gas appliances with an open top that requires high combustibility by utilizing a stack gas burner.

Another effect of the present invention is to increase efficiency and reduce carbon emissions by reducing the gap between cooking vessels in gas appliances using stack gas burners.

Another effect of the present invention is that the distance between the stack gas burner and the cooking vessel can be reduced, thereby reducing the height of the product.

1 is an overall view of a stack gas burner according to an embodiment of the present invention.
Figure 2 is an exploded view of a stack gas burner
Figure 3 is a top view of a stack gas burner
Figure 4 is a portion of a stack gas burner representing the matching between the flame port of the head and the distribution port of the distribution plate.
Figure 5 is a cross-sectional view of the stack gas burner of AA.
Figure 6 is an example of a gas appliance that does not open at the top using a stack gas burner.
7 is an exemplary diagram of an internal multi-flame port burner.

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.

The burner of the present invention ejects flame vertically like a vertical flame ejection burner, but the effect is greatly improved by stacking one or more members between the head and the cup, so it is called a ‘stack gas burner’.

Next, an invention that secures combustibility to increase the primary air and thermal power of a stack gas burner and prevents lifting, backfire, and flame agglomeration will be described in detail with reference to the attached drawings as an example.

1 is an overall view of a stack gas burner according to an embodiment of the invention.

Figure 2 is an exploded view of a stack gas burner.

Figure 3 is a top view of a stack gas burner.

Figure 4 is a partial view of a stack gas burner representing the matching between the flame ports of the head and the distribution ports of the distribution plate.

Figure 5 is a cross-sectional view of a stack gas burner A-A.

The stack gas burner (0) is connected to the outer wall of the injector holder (2) and cup (4), which holds the two injectors (1) that inject gas into the venturi pipe (3) at a distance from the venturi pipe (3). Two venturi pipes (3) that introduce and mix gas-air through the venturi effect and flow it into the cup (4), a cup (4) located below the head (5) that stores the gas-air, and a gas-air It consists of a head (5) with a plurality of flame ports (11) that eject in a vertical direction.

The gas inlet 15 allows gas that has passed through a gas pipe (not shown) to flow into the two injectors 1.

The injector 1 consists of a pair of spaced injectors 1a and 1b and horizontally injects the gas introduced from the gas inlet 15. The injector 1 is fixed by the injector holder 2, and the injector holder 2 may be integrated with the cup 4. The outlet diameters of the injectors 1a and 1b limit the amount of gas injected and thus determine the thermal power of the burner 0. The number of injectors (1) may be one or more depending on the thermal power and size of the burner (0).

The Venturi pipe (3) consists of a pair of Venturi pipes (3a, 3b) and introduces primary air (x) through the Venturi effect by applying Bernoulli's equation. The center lines of the injectors (1a, 1b) and the venturi pipes (3a, 3b) are aligned horizontally so that the largest amount of primary air (x) flows into the venturi pipe. The venturi tube (3) is horizontally coupled to the outer wall of the cup (4). The quantity of venturi pipes (3) is used the same as the quantity of injectors (1).

The cup lower chamber (8) reduces gas-air flow resistance and increases its volume so that the gas-air flowing out of the venturi tube outlet (7) flows in as quickly as possible. The gas-air flow path 14 between the middle air holes 13 allows the gas-air to flow quickly from the cup lower chamber 8 to the cup upper chamber 9 without resistance to the outer portion of the cup. For this reason, the cross-sectional area 14 of the flow path is sufficiently large so that the cup lower chamber 8 and the cup upper chamber 9 can quickly equalize pressure. The equalizing pressure of the cup lower chamber (8) and the cup upper chamber (9) is an important factor in equalizing the flame of the flame port (11) of the head (5).

The central air hole (12) and the middle air hole (13) are arranged to coincide with the cup (4) and head (5). The central air hole 12 penetrates the central portion of the cup lower chamber 8 and the central portion of the head 5 to allow air to flow from beneath the lower cup to the upper upper portion of the head during burner operation. The middle air hole (13) passes through the middle part of the cup upper chamber (9) and the middle part of the head (5) and allows air to flow from under the upper cup to above the upper part of the head during burner operation. The location and quantity of air holes ensure that there is no shortage of air used as secondary air and upward airflow for the internal flame. The air hole does not have to be located in the center or middle, but should be determined by first considering a location suitable for the distribution of the secondary air of the flame.

The head 5 has a plurality of flame ports 11 that eject gas-air in a vertical direction to form a flame, and the location and cross-sectional area of the flame ports 11 are very important factors. The present invention increases the cross-sectional area and thermal power of the flame port 11 as much as possible and prevents lifting, backfire, and flame merging between flames, so that it can be used even in gas appliances whose tops are not open, as shown in the example of Figure 6. However, in general, as the cross-sectional area of the flame port 11 increases, the primary air volume can be increased, but trade-off phenomena such as lifting, backfire, and flame agglomeration are likely to occur, so a constant size consisting of a cup and cap There is a limit to increasing the thermal power in vertical flame ejection burners. Additionally, if the thermal power increases while the cross-sectional area of the flame port 11 is increased, flame agglomeration occurs. That is, when the cross-sectional area and thermal power of the flame port 11 are increased, it is difficult to perform the function as a burner due to lifting, backfire, and flame agglomeration.

In order to solve this, a distribution plate (6) communicating with the flame port (11) and having a distribution port (10) for distributing gas-air to the flame port (11) is placed between the head (5) and the cup (4). (Stack). In addition, each distribution port 10 of the distribution plate 6 and each flame port 11 of the head 5 penetrate one-to-one (a, b, c, d, e, f...) as shown in Figure 4. do.

When the distribution plate (6) is stacked, the head (5) and the distribution plate (6) play their respective roles to increase the cross-sectional area and thermal power of the flame port (11) as much as possible to ensure combustibility and to maintain lifting, backfire, and flame resistance. Avoid flame clumps. The distribution plate (6) determines and distributes the gas-air amount going to the flame port (11) of the head (5) over the cross-sectional area of the distribution port (10). The head 5 has a cross-sectional area of the flame port 11, a flame port height and a means of slowing down the gas-air flow with the flame port wall and prevents the flame from burning out, preventing lifting and flashbacks. When the distribution port (10) determines and distributes the amount of gas-air and then ejects, the gas-air is released even if lifting is eliminated and the flame burns due to the shape, cross-sectional area, flame port height, and flame port wall of the flame port (11). This prevents backfire from occurring by cooling and extinguishing the fire. Flame agglomeration between flames is prevented by arranging the flame ports 11 at regular intervals according to the thermal power. Even if the cross-sectional area of the distribution port 10 and the cross-sectional area of the flame port 11 are either larger or the same, any combination can be used as long as it increases the thermal power and does not cause lifting, backfire, or flame agglomeration between flames. In general, the cross-sectional area of the flame port 11 is equal to or larger than the cross-sectional area of the distribution port 10 to increase thermal power and prevent lifting, backfire, and flame agglomeration between flames. The shape of the flame port 11 may be circular or slit-shaped, or may be used in combination. The material of the distribution plate (6) is made of metal or non-metal that can withstand high temperatures, does not burn and is durable, and the thickness can be any thickness as long as it matches the function of the distribution plate (6). Additionally, if the distribution plate 6 is intended to improve function, the quantity is not limited.

When increasing the total cross-sectional area (㎟) of the distribution port 11 at a certain gas amount of thermal power (kW, BTU, etc.), the flame port loading is lowered because the flame port loading is the total cross-sectional area compared to the thermal power. The lower the flame hole load, the greater the primary air (x), which can increase the thermal power. However, the possibility of lifting, backfire, and flame agglomeration also increases, so the flame hole load should be set to a small value, but the distribution plate (6) is adjusted to the head and cup. Stack them in between to prevent lifting, backfire, or flame agglomeration.

Figure 6 is an example of a gas appliance that does not open at the top utilizing a stack gas burner.

7 is an exemplary diagram of an internal multi-flame port burner.

In Figure 6, the upper part is sealed by a cooking vessel, and the burned waste gas is discharged to the outside through a stack. As shown in Figure 7, a burner (internal multiple/singular flame port burner) with multiple or single flame ports arranged horizontally on the inner wall of the center prevents lifting through flame agglomeration or flame retention between flames. To achieve this, a method is applied to increase the primary air to 70-80% by enlarging the area of the flame port to lower the flame load. Like the internal multiple/single flame port burner, the stack gas burner also stacks the separator plates (6) to reduce the flame load, thereby improving combustibility and allowing it to be used in a closed space. Additionally, by reducing the gap between the stack gas burner and the cooking vessel, the height of the product is reduced and efficiency is improved, thereby reducing carbon emissions.

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.

1: Injector 2: Injector Holder
3: Venturi tube 4: Cup
5: Head 6: Distribution plate
8: cup lower chamber 9: cup upper chamber
10: distribution port 11: flame port
12: central air hole 13: middle air hole

Claims (4)

A head with a plurality of flame ports that eject gas-air in a vertical direction;
a cup located below the head and storing gas-air;
One or more venturi tubes connected to the outer wall of the cup to introduce and mix gas-air through the venturi effect to flow into the cup;
an injector holder spaced apart from the venturi tube and holding one or more injectors that inject gas into the venturi tube; and
A stack gas burner comprising a distribution plate stacked between the head and the cup, communicating with the flame port, and including one or more distribution ports for distributing gas-air to the flame port. According to claim 1,
The distribution plate is a stack gas burner including one or more air holes through which secondary air and air used as an upward air flow pass through and flow into the head and the cup. According to claim 1,
A stack gas burner wherein the distribution port and the flame port in communication with each other have a cross-sectional area of the flame port equal to or larger than a cross-sectional area of the distribution port. According to claim 1,
The flame port is a stack gas burner including at least one slit-type or circular flame port.