CN204756936U - Fire cover for burner - Google Patents

Abstract

The utility model provides a fire cover for burner, inner circle wall and outer lane wall that set up including being the annular and with the heart septum lie in the lid above the inside and outside ring of wall, the even interval distribution of circumference who is equipped with edge outer lane wall on the wall of outer lane is and run through the fiery hole of outer lane wall thickness direction to and with the fire little fiery hole that the interval set up about the hole, the baffle has between inner circle wall and the outer lane wall, the baffle separates into first cavity and second cavity with the space that inside and outside ring of wall and lid enclose, angers the hole site in first cavity, little fiery hole site in second cavity, and the hole intercommunication has on the baffle first cavity and second cavity, first cavity communicates and the gas is passed through from first cavity with external mixing chamber the hole gets into the second cavity. This fire cover for burner can prevent to produce flame -out when size fire from switching, or produce detonation etc. When closing the fire to the fiery hole appearance that prevents the fire lid is left the flame, is taken off fiery phenomenon, and should be detachable construction by the fire lid, the washing of being convenient for.

Description

burner fire cover

technical field

The utility model relates to a burner fire cover.

Background technique

In the burner, in order to stabilize the burning flame, a flame-stabilizing groove is usually provided on the fire cover. The flame-stabilizing groove is similar to the fire hole of the fire cover, and is connected to the air mixing chamber in the fire cover, and is generally located on the fire cover. Above or below the fire hole. For example, Chinese patent CN204132345A discloses a "flame-stabilizing burner suitable for gas cookers" and discloses a ring-shaped flame-stabilizing groove. Although it plays a certain role in stabilizing the flame, it is easy to cause overflow during use and block the flame-stabilizing groove. The tank is not easy to clean, and when the burner is turned on and off or when the fire is switched, that is, when the pressure in the air-mixing chamber changes significantly, it will cause the fire to explode and so on.

Utility model content

The technical problem to be solved by the utility model is to provide a burner fire cover with stable flame, no detonation and flameout.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a burner fire cover, including an inner ring wall and an outer ring wall that are annular and concentrically arranged at intervals, and a cover that is located above the inner and outer ring walls. The wall of the outer ring is provided with fire holes distributed evenly along the circumference of the wall of the outer ring and penetrating through the thickness direction of the wall of the outer ring. The small fire hole in the thickness direction is characterized in that: there is a partition between the wall of the inner ring and the wall of the outer ring, and the partition divides the space surrounded by the wall of the inner and outer rings and the cover into the first cavity and the first cavity. The second cavity, the fire hole is located in the first cavity, the small fire hole is located in the second cavity, and there is a channel on the partition to communicate with the first cavity and the second cavity, the first cavity A cavity communicates with the gas mixing chamber outside, and gas enters the second cavity from the first cavity through the channel.

As a preferred embodiment of the present utility model, the partition plate extends horizontally between the wall surface of the inner ring and the wall surface of the outer ring.

In order to facilitate cleaning, the cover body is detachably connected to the wall surfaces of the inner ring and the outer ring.

Preferably, the small fire hole is a concave groove at the top of the wall surface of the outer ring.

In order to make the small flame hole form a circle of flame stabilizing ring, the part of the cover body in contact with the outer edge of the outer ring wall is provided with a circle of upward concave concave ring, and the concave ring communicates with the small flame hole .

As another embodiment of the present utility model, the partition plate is detachably connected to the wall surface of the inner ring and the wall surface of the outer ring.

As another embodiment of the present utility model, the small fire hole is located above the fire hole, and the section of the partition is "L" shape, including a vertically extending wall between the inner ring wall and the outer ring wall. A first portion, and a horizontally extending second portion positioned between the first portion and the outer ring wall.

Preferably, the second part of the separator is separated from the first part, the second part is detachably connected to the wall of the outer ring, the first part is fixed to the cover, and the first part and the second The gap between the two parts forms the channel.

Preferably, the channels are a plurality of small holes or strip-shaped holes evenly spaced along the partition.

Preferably, the channel is in the shape of an annular slit extending in the same direction as the partition.

Preferably, the fire hole extends obliquely upward from the inner side to the outer side of the wall surface of the outer ring.

In order to make the second cavity better form a pressure-stabilizing cavity, the total area of the channels is smaller than the total area of the small flame holes.

Compared with the prior art, the utility model has the advantage that the burner cap is formed with a separate pressure stabilizing cavity to form a ring of stabilizing flame, and has a good stable pressure and pressure in the gas mixing cavity when the load changes. Eliminate the effect of sudden change in combustion state, prevent flameout when switching between large and small fires, or knocking when the fire is turned off, and stabilize the flame ring to grow an open flame, preventing the fire hole of the fire cover from falling out of flame and falling out of fire, and the fire The cover is a detachable structure, which can prevent the overflow from clogging the fire hole and making it impossible to clean.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a burner fire cover according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of the burner cap of the embodiment of the present invention.

Fig. 3 is a partial three-dimensional sectional view of the burner cap of the embodiment of the present invention.

FIG. 4 is an enlarged schematic view of part A in FIG. 2 .

Fig. 5 is a cross-sectional view of a burner cap according to another embodiment of the present invention.

FIG. 6 is an enlarged schematic view of part B in FIG. 5 .

Fig. 7 is a cross-sectional view of a burner cap according to another embodiment of the present invention.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1-4, it is a schematic diagram of a burner fire cover according to an embodiment of the present invention. The fire cover includes an inner ring wall 1 and an outer ring wall 2 that are annular and concentrically arranged at intervals, and a cover body 3 located above the inner and outer wall surfaces. The fire cover is placed above the gas mixing chamber for combustion. The device forms a flame.

The outer ring wall 2 of the fire cover has a circle of fire holes 4 that run through its thickness direction and are evenly spaced along the circumference of the outer ring wall 2. As shown in Figure 2, the axial and horizontal directions of the fire holes 4 Forming an angle, the fire hole 4 extends obliquely upward from the outer ring wall 2 from inside to outside. The top of the outer ring wall surface 2 has a circle of small fire holes 5 that run through the thickness direction of the outer ring wall surface 2 and are evenly spaced along the circumference of the outer ring wall surface 2. The small fire holes 5 and the fire holes 4 Distributed at intervals up and down, in this embodiment, the small fire holes 5 are recessed grooves located on the top surface of the outer ring wall 2. Since the top of the outer ring wall 2 is connected to the cover body 3, the outer ring wall 2 and the A circle of small flame holes 5 connecting the inside and outside of the outer ring wall 2 is formed between the cover bodies 3 .

The air mixing chamber of the burner forms a flame through the fire hole 4, while the small fire hole 5 forms a stable flame circle at the same time. A partition 6 extends horizontally between the inner ring wall 1 and the outer ring wall 2, the partition 6 is annular, and the partition 6 surrounds the inner ring wall 1, the outer ring wall 2 and the cover body 3 The space is divided into two, as shown in Fig. 4, it is two spaces up and down, that is, the first cavity 10 located below and the second cavity 20 located above, the partition 6 connects the small fire hole 5 and the fire hole 4 separated. Wherein the second cavity 20 has a small fire hole 5, the first cavity 10 has a fire hole 4, and the dividing plate 6 is provided with a channel 61 to communicate with the first cavity 10 and the second cavity 20, the channel 61 can The holes are evenly distributed along the partition 6, and the number of holes is much smaller than the fire hole 4 and the small fire hole 5, that is, the total area of the channel 61 is smaller than the total area of the small fire hole 5. The first cavity 10 communicates with the gas mixing chamber, and the gas entering the first cavity 10 from the gas mixing chamber enters the second cavity through the channel 61 .

When the gas flows through the first cavity 10 of the fire cover from the gas mixing chamber, part of the gas flows out from the fire hole 4 for combustion, and part of the gas flows into the second cavity 20 of the fire cover through the passage 61. The second cavity 20 It is a pressure-stabilizing cavity surrounded by a cover body 3, inner and outer ring walls, and partitions 6. Since there is a certain difference between the total area of all channels 61 and the total area of all small fire holes 5, the channel 61 The total area of the small fire hole 5 is smaller than the total area of the small fire hole 5, and there is a large-volume stabilizing cavity in the middle transition stage, which causes the gas flow to decrease sharply to the lower limit of the combustion speed of the gas at the position speed of the small fire hole 5 value, thus forming a natural flame-stabilizing function, that is, the small flame hole 5 forms a circle of flame-stabilizing rings. The second cavity 20 is a separate pressure stabilizing cavity, so when the load changes, it can stabilize the pressure in the air-mixing cavity and eliminate the sudden change of the combustion state, which can prevent the flameout when switching between large and small fires, or When the fire is turned off, detonation etc. are produced, and the small fire hole 5 forms an "eternal flame" relative to the fire hole 4 to light at all times, so as to prevent the fire hole 4 from flaming and deflaming.

Preferably, as shown in Figures 2 and 3, in this embodiment, the separator 5 is integrally formed with the walls of the inner and outer rings, or is fixedly connected as a non-detachable structure, while the cover 3 is independent of the walls of the inner and outer rings. The structure is detachable and can be separated from each other. Therefore, even if the blockage of the fire hole 4 caused by overflow occurs, the cover body 3 can be removed to clean the fire hole 4, so that the fire cover is easy to clean. Moreover, in order to make the flame-stabilizing ring of the small flame hole 5 form a complete circle, the part of the cover body 3 in contact with the outer edge of the outer ring wall 2 is provided with a circle of upwardly concave concave rings 31, the concave ring 31 It is located above the small flame hole 5 and communicates with the small flame hole 5 on the outer ring wall 2, so that the flame stabilization of the small flame hole 5 forms a complete circle and plays a better role in flame stabilization.

As shown in Figures 5 and 6, it is another embodiment of the utility model embodiment. In this embodiment, the difference from the above embodiment is that the cover body 3' is integrally formed or fixedly connected with the inner and outer ring walls. It is a non-detachable structure, the small fire hole 5' is formed on the top of the outer ring wall 2', and does not contact with the cover 3', and there is no concave ring on the cover 3', and the partition 6' is in the The wall of the inner ring 1' and the wall of the outer ring 2' extend horizontally, and the partition 6' and the cover 3' are connected and fixed by screws, and the partition 6' is connected with the wall of the inner ring 1' and the wall of the outer ring 2' Detachable connection, therefore, the partition 6' can also be removed for cleaning, the partition 6' also has a channel 61', and the channel 61' is also arranged on the partition 6' and evenly spaced along the partition. , the partition 6' divides the space enclosed by the cover body 3' and the inner and outer ring walls into two upper and lower cavities, that is, the first cavity 10' below and the second cavity 20' above, and the fire hole 4 'is located in the first cavity 10', and the small flame hole 5' is located in the second cavity 20', which is also a separate pressure-stabilizing cavity.

As shown in Figure 7, it is a cross-sectional view of a burner cap in another embodiment of the utility model, which also includes an inner ring wall 1 "and an outer ring wall 2" arranged at annular intervals, and a wall located on the inner ring 1 "and the cover body 3" above the outer ring wall 2", the small fire hole 5" is located above the fire hole 4", and a partition 6" is arranged between the inner ring wall 1" and the outer ring wall 2", the partition The plate 6" is ring-shaped and has an "L"-shaped cross-section in the up and down direction, including a first part 62" extending up and down between the inner ring wall 1" and the outer ring wall 2", the first part 61" and the cover body 3" connection, and the second part 63" extending horizontally between the first part 62" and the outer ring wall 2", the partition 6" divides the space enclosed by the inner and outer ring walls and the cover into the second A cavity 10" and a second cavity 20". The second cavity 20" is located above and near the outside of the first cavity 10", and the second cavity 20" also forms a pressure stabilizing cavity.

The partition 6" is provided with a slit-shaped channel 61", the channel 61" is annular extending in the same direction as the partition 6", and the channel 61" is arranged between the first part 62" and the second part 63". At the junction, the channel 61" communicates with the second cavity 20" and the first cavity 10", and the total area of the channel 61" is smaller than the total area of the small fire holes 5" in the second cavity 20". And the second part 63" of the partition 6" is separated from the first part 62", and the first part 62" is fixedly connected with the cover body 3", and a gap is formed between the second part 63" and the first part 62". The channel 61 ″ is formed, and the second part 63 ″ is detachably connected to the outer ring wall 2 ″.

And those skilled in the art can also understand that in the above two embodiments, one of the partitions is detachably connected to the walls of the inner and outer rings, and the other is the detachable connection between the cover and the walls of the inner and outer rings. It is detachably connected with the inner and outer ring walls. And in above-mentioned embodiment, small fire hole is positioned at the top of fire hole, also can small fire hole be positioned at the below of fire hole, as long as dividing plate separates fire hole and small fire hole, and dividing plate upper body has hole, makes air-flow from the first One cavity enters the second cavity, and the second cavity has a small fire hole, and the first cavity has a fire hole. The separator may not necessarily be in the shape of a flat plate or an "L" shape as described in the above embodiments, but may also be in other shapes. The passage on the partition can be a plurality of small holes evenly spaced on the partition as described in the first two embodiments, or it can be the passage of the annular gap in the last embodiment, or it can be in other shapes , such as multiple strip-shaped holes spaced apart from each other.

The burner cover has a separate pressure stabilizing chamber to form a ring of stabilizing flame, which can stabilize the pressure in the gas mixing chamber and eliminate the sudden change of combustion state when the load changes, and can prevent the fire from burning when switching between large and small fires. If there is a flameout, or when the fire is turned off, there will be a detonation, etc., and the steady flame will grow into an open flame to prevent the fire hole of the fire cover from being out of flame and out of fire, and the fire cover is a detachable structure, which can prevent overflow from causing a fire hole A condition where it becomes clogged and cannot be cleaned.

Although the preferred embodiments of the present invention have been described in detail above, it should be clearly understood that the present invention can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims (12)

1. A burner fire cover, comprising an annular inner ring wall and an outer ring wall arranged at concentric intervals, a cover body above the inner and outer ring walls, the outer ring wall is provided with a peripheral wall along the outer ring wall The fire holes distributed at uniform intervals and running through the thickness direction of the wall surface of the outer ring, and the small fire holes distributed at intervals above and below the fire holes are also uniformly spaced along the circumferential direction of the wall surface of the outer ring and penetrate the thickness direction of the wall surface of the outer ring, which are characterized in that: There is a partition between the wall of the inner ring and the wall of the outer ring, and the partition divides the space surrounded by the walls of the inner and outer rings and the cover into a first cavity and a second cavity, and the fire hole is located in the first cavity, the small fire hole is located in the second cavity, and there is a channel on the partition to communicate with the first cavity and the second cavity, the first cavity communicates with the external air mixing chamber and the gas flows from the The first cavity enters the second cavity through the channel. 2. The burner cap according to claim 1, characterized in that: the partition (6; 6') extends horizontally between the wall of the inner ring and the wall of the outer ring. 3. The burner fire cover according to claim 2, characterized in that: the cover body (3) is detachably connected to the inner ring wall (1) and outer ring wall (2). 4. The burner fire cover according to claim 3, characterized in that: the small fire hole (4) is a concave groove at the top of the outer ring wall (2). 5. The burner fire cover according to claim 4, characterized in that: the part of the cover body (3) in contact with the outer edge of the outer ring wall (2) is provided with a circle of upwardly concave concave rings (31 ), the concave ring (31) communicates with the small fire hole (5). 6. The burner fire cap according to claim 2, characterized in that: the partition (6') is detachably connected to the inner ring wall (1') and the outer ring wall (2'). 7. The burner fire cover according to claim 1, characterized in that: the small fire hole is located above the fire hole, the section of the partition is "L" shape, including the inner ring wall (1 ”) and the first portion (62”) extending up and down between the outer ring wall (2”), and the second portion ( 63"). 8. The burner fire cover according to claim 7, characterized in that: the second part (63") of the partition (6") is separated from the first part (62"), and the second part ( 63") is detachably connected to the outer ring wall (2"), the first part (62") is fixed to the cover (3"), the first part (62") and the second part ( 63") to form said channel (61"). 9. The burner cap according to any one of claims 1-7, characterized in that: the passages are a plurality of small holes or strip-shaped holes evenly distributed along the partition. 10. The burner cap according to any one of claims 1-7, characterized in that the passage is in the shape of an annular slit extending in the same direction as the partition. 11. The burner fire cover according to any one of claims 1-8, characterized in that, the fire holes extend obliquely upward from the inner side to the outer side of the wall surface of the outer ring. 12. The burner fire cover according to any one of claims 1-8, characterized in that: the total area of the channels is smaller than the total area of the small fire holes.