CN114838354A - Upper air inlet burner and gas stove - Google Patents

Abstract

The invention provides an upper air inlet burner and a gas stove, and relates to the technical field of gas stoves, wherein the upper air inlet burner comprises a burner body and an outer fire cover; the burner body comprises an outer peripheral ring and a middle peripheral ring, a burner partition plate is arranged between the outer peripheral ring and the middle peripheral ring, and a channel for communicating the outer premixed air cavity and the middle premixed air cavity is arranged between the outer premixed air cavity and the middle premixed air cavity; the furnace end partition plate is provided with a first outer ring outlet and a second outer ring outlet, the first outer ring outlet is communicated with the outer premixed air cavity and the outer ring fire ejector pipe, and the second outer ring outlet is communicated with the outer premixed air cavity and the middle ring fire ejector pipe; the outer fire cover comprises an outer gas mixing cavity and a middle gas mixing cavity which are arranged in a separated mode, and the outer fire cover is buckled on the furnace end body. The gas stove comprises an upper air inlet burner. The technical problems that the air outlet pressure of the outer fire hole and the middle fire hole of the same outer fire cover is uneven and flame and tempering are easily caused in the prior art are solved, the air flow pressure field in the distribution cavity is consistent, the air flow of each fire hole of the outer fire cover is even, and the flame and tempering are avoided.

Description

Upper air inlet burner and gas stove

Technical Field

The invention relates to the technical field of gas cookers, in particular to an upper air inlet burner and a gas stove.

Background

Most of the existing cookers in the market are embedded atmospheric burners, and the existing cookers have the advantages of high heat load and high firepower. However, due to the limited space of the cabinet, when the primary air of the embedded atmospheric burner is not sufficiently supplemented, the combustion is insufficient, and yellow flame is generated. At present, people are increasingly focusing on upper intake burners to optimize the primary air supplement.

In order to ensure sufficient heat load, the outer ring and the middle ring are generally provided with fire holes on the same outer fire cover, but because the air outlet pressure required by the outer ring and the middle ring is not consistent, but the pressure of the outer ring and the middle ring is consistent, the flame combustion is easy to be unstable, and phenomena such as flame leaving and backfire occur.

Disclosure of Invention

The invention aims to provide an upper air inlet burner and a gas stove, which are used for solving the technical problems of the prior art that the air outlet pressure of the outer fire hole and the middle fire hole of the same outer fire cover is not uniform, and flame leaving and tempering are easily caused.

In a first aspect, the present invention provides an upper intake burner comprising: the furnace end body and the outer fire cover;

the burner body at least comprises an outer peripheral ring and a middle peripheral ring, a burner partition plate is arranged between the outer peripheral ring and the middle peripheral ring, the burner partition plate divides the area between the outer peripheral ring and the middle peripheral ring into an outer premixed air cavity and an intermediate premixed air cavity, a channel for communicating the outer premixed air cavity and the intermediate premixed air cavity is arranged between the outer premixed air cavity and the intermediate premixed air cavity, and the space of the outer premixed air cavity is larger than that of the middle premixed air cavity;

the furnace end partition plate is provided with a first outer ring outlet and a second outer ring outlet, the first outer ring outlet is communicated with the outer premixed air cavity and the outer ring fire ejector pipe, and the second outer ring outlet is communicated with the outer premixed air cavity and the middle ring fire ejector pipe;

the outer fire cover comprises an outer air mixing cavity and an intermediate air mixing cavity which are arranged in a separated mode, the outer fire cover is buckled on the furnace end body, so that the outer air mixing cavity is communicated with the outer air mixing cavity, and the intermediate air mixing cavity is communicated with the intermediate air mixing cavity.

Further, a fire cover clapboard is arranged inside the outer fire cover, and divides the inner space of the outer fire cover into the outer gas mixing cavity and the middle gas mixing cavity;

the channel is a vertical gap between the furnace end clapboard and the fire cover clapboard.

Furthermore, the channels are arranged into a plurality of groups, and the plurality of groups of channels are arranged along the circumferential direction of the furnace end partition plate at intervals.

Furthermore, concave platforms are arranged at the top ends of the furnace end partition plates, and a boss is formed between every two adjacent groups of concave platforms;

the bottom surface of the fire cover partition plate is tightly abutted to the top surface of the boss, and the vertical gap is formed between the bottom surface of the fire cover partition plate and the concave table.

Further, the channel is arranged on the furnace end clapboard.

Further, the area of the channel is set according to the middle ring power.

Furthermore, the outer ring fire ejector pipe and the middle ring fire ejector pipe are both arranged in an extending mode along the horizontal direction.

Furthermore, the outer ring fire injection pipe and the middle ring fire injection pipe are arranged oppositely or in the same direction.

Further, the upper air inlet burner also comprises an inner fire cover; the furnace end also comprises an inner surrounding ring, the inner surrounding ring is positioned on the inner peripheral side of the middle surrounding ring, and the inner fire cover is buckled on the inner surrounding ring;

the outer ring fire ejector pipe and the middle ring fire ejector pipe are arranged on two sides of the inner enclosure, and an air channel is formed between the outer ring fire ejector pipe and the middle ring fire ejector pipe.

Has the beneficial effects that:

on one hand, the first outer ring outlet is communicated with the outer premixing air cavity and the outer ring fire ejector pipe, so that fuel gas of the outer ring fire ejector pipe can enter the outer premixing air cavity from the outer ring fire ejector pipe through the first outer ring outlet for premixing; on the other hand, the second outer ring outlet is communicated with the outer premixed air cavity and the middle ring fire ejector pipe, so that the fuel gas of the middle ring fire ejector pipe can enter the outer premixed air cavity through the second outer ring outlet from the middle ring fire ejector pipe for premixing; moreover, because a channel for communicating the outer premixed air cavity and the middle premixed air cavity is arranged between the outer premixed air cavity and the middle premixed air cavity, part of the fuel gas in the outer premixed air cavity can enter the middle premixed air cavity. Simultaneously, because outer air cavity and outer air cavity intercommunication, well air cavity and well air cavity intercommunication that mixes in advance mix outside with, consequently, can make the gas that mixes in advance of outer air cavity get into outer air cavity that mixes and carry out the intensive mixing, simultaneously, can make the gas that mixes in advance of well air cavity mix in the gas cavity gets into and mix the air cavity and carry out the intensive mixing.

It is obvious that the gas of outer ring fire ejector tube and well ring fire ejector tube all gets into outer premix air cavity earlier and mixes, because the space of outer premix air cavity is greater than the space of well premix air cavity, can guarantee that the gas mixes evenly, pressure stability, and during little part premix gas gets into well premix air cavity through the passageway again, the gas supply capacity and pressure stability of well zhong can be guaranteed to little part premix gas, thereby realize well premix air cavity, the outer required pressure of premix air cavity separately, realize well ring fire, the stability of outer ring fire burning, thereby avoid appearing phenomenons such as flame or tempering.

In a second aspect, the present invention provides a gas range comprising: the upper intake air burner of any one of the preceding embodiments.

Has the advantages that:

the gas stove provided by the invention comprises the upper air inlet burner, so that the technical advantages and effects of the gas stove also comprise the technical advantages and effects of the upper air inlet burner, and are not repeated herein.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of an upper intake air burner according to an embodiment of the present invention;

FIG. 2 is a top view of an upper intake burner provided in accordance with an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an upper intake burner provided in accordance with an embodiment of the present invention;

FIG. 4 is a partial schematic structural view of an upper intake burner provided in an embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 7 is a partial structure diagram of the burner.

An icon:

100-a furnace end body; 110-peripheral ring; 120-middle apron; 130-a furnace end clapboard; 140-outer premix air cavity; 150-middle premixed air cavity; 160-channel; 170-outer ring fire ejector pipe; 180-medium ring fire ejector pipe; 190-inner enclosure;

131-a first outer ring outlet; 132-a second outer ring outlet; 133-concave stage; 134-boss;

200-outer fire cover; 210-an outer gas mixing cavity; 220-medium air mixing cavity; 230-fire lid baffles;

300-inner fire cover;

400-air channel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1 to 7, the present embodiment provides an upper inlet air burner including a burner body 100 and an outer fire cover 200; the burner body 100 at least comprises an outer peripheral ring 110 and a middle peripheral ring 120, a burner partition 130 is arranged between the outer peripheral ring 110 and the middle peripheral ring 120, the burner partition 130 divides the area between the outer peripheral ring 110 and the middle peripheral ring 120 into an outer premixed air cavity 140 and a middle premixed air cavity 150, a passage 160 for communicating the outer premixed air cavity 140 and the middle premixed air cavity 150 is arranged between the outer premixed air cavity 140 and the middle premixed air cavity 150, wherein the space of the outer premixed air cavity 140 is larger than that of the middle premixed air cavity 150; the furnace end partition 130 is provided with a first outer ring outlet 131 and a second outer ring outlet 132, the first outer ring outlet 131 is communicated with the outer premix air cavity 140 and the outer ring fire ejector pipe 170, and the second outer ring outlet 132 is communicated with the outer premix air cavity 140 and the middle ring fire ejector pipe 180; the outer fire cap 200 includes an outer air mixing chamber 210 and an intermediate air mixing chamber 220 which are separately provided, and the outer fire cap 200 is fastened to the burner body 100 so that the outer air mixing chamber 210 communicates with the outer pre-mixing air chamber 140 and the intermediate air mixing chamber 220 communicates with the intermediate pre-mixing air chamber 150.

In the upper air inlet burner provided by this embodiment, on one hand, the first outer ring outlet 131 is communicated with the outer premix air cavity 140 and the outer ring fire ejector pipe 170, so that the fuel gas of the outer ring fire ejector pipe 170 can enter the outer premix air cavity 140 through the first outer ring outlet 131 from the outer ring fire ejector pipe 170 for premixing; on the other hand, the second outer ring outlet 132 is communicated with the outer premix air cavity 140 and the middle ring fire ejector pipe 180, so that the fuel gas of the middle ring fire ejector pipe 180 can enter the outer premix air cavity 140 through the second outer ring outlet 132 from the middle ring fire ejector pipe 180 for premixing; furthermore, since the passage 160 for communicating the outer premix air chamber 140 and the middle premix air chamber 150 is provided between the two, a part of the fuel gas in the outer premix air chamber 140 can be introduced into the middle premix air chamber 150. Meanwhile, since the outer premix air chamber 210 is communicated with the outer premix air chamber 140 and the middle premix air chamber 220 is communicated with the middle premix air chamber 150, the premixed gas of the outer premix air chamber 140 can enter the outer premix air chamber 210 to be fully mixed, and the premixed gas of the middle premix air chamber 150 can enter the middle premix air chamber 220 to be fully mixed.

It can be seen that the gas of the outer ring fire ejector pipe 170 and the middle ring fire ejector pipe 180 enters the outer premixed gas cavity 140 to mix, the space of the outer premixed gas cavity 140 is larger than the space of the middle premixed gas cavity 150, so that uniform premixing and stable pressure of the gas can be ensured, a small part of premixed gas enters the middle premixed gas cavity 150 through the passage 160, and a small part of premixed gas can ensure the middle ring gas supply amount and the pressure stability, thereby realizing the respective required pressures of the outer premixed gas cavity 140 and the middle premixed gas cavity 150, realizing the combustion stability of the middle ring fire and the outer ring fire, and avoiding the occurrence of flame-leaving or backfire.

In one embodiment of the present application, referring to fig. 6, a fire cover partition 230 is provided inside the outer fire cover 200, and the fire cover partition 230 partitions an inner space of the outer fire cover 200 into an outer air mixing chamber 210 and an intermediate air mixing chamber 220; the channel 160 is a vertical gap between the burner partition 130 and the fire cover partition 230, and thus, the gas can flow from the outer premix gas chamber 140 to the middle premix gas chamber 150 only by properly adjusting the vertical gap between the burner partition 130 and the fire cover partition 230; in addition, the channel 160 of this structure can eliminate the need for excessive changes in the structure of the burner body 100 and the outer fire cover 200.

Further, the passages 160 are provided in a plurality of sets, and the plurality of sets of passages 160 are provided at intervals along the circumferential direction of the burner partition 130, so that it is ensured that the gas flows toward the middle premix air chamber 150 from a plurality of directions, thereby satisfying the gas supply amount of the middle premix air chamber 150 and shortening the time for supplying the required gas amount.

In this embodiment, the channels 160 may be provided in four groups, and the four groups of channels 160 are uniformly provided, and of course, the number of the channels 160 may be increased or decreased as appropriate according to the area of the channels 160.

Referring to fig. 7, concave platforms 133 are arranged at the top ends of the furnace end partition plates 130, and a convex platform 134 is formed between two adjacent groups of concave platforms 133; the bottom surface of the fire lid partition 230 is in close abutment with the top surface of the boss 134, and a vertical gap, i.e. a channel 160, is formed between the bottom surface of the fire lid partition 230 and the recessed platform 133.

In another embodiment of the present application, the channel 160 may open directly into the burner partition 130 (not shown in the figures).

On the basis of the above embodiment, the area of the channel 160 is set according to the middle ring power, in short, when the required middle ring power is large, the area of the channel 160 is properly increased, that is, the depth of the concave platform 133 can be properly adjusted to be small; if the required middle ring power is large, the area of the channel 160 is appropriately reduced, i.e., the depth of the recess 133 can be appropriately adjusted to be large.

In this embodiment, referring to fig. 2 and 3, the outer ring fire ejector pipe 170 extends in the horizontal direction at the inlet of the outer premix air chamber 140; the middle ring fire ejector pipe 180 extends in a horizontal direction at an inlet of the middle premix air chamber 150. So set up, can increase relatively outer ring fire and draw the extension length that penetrates pipe 170 and middle ring fire and draw and penetrate pipe 180, can reduce the velocity of flow of gas and air mixing gas, promote the intensive mixing of gas and air to improve and draw the ability, realize the complete combustion.

The outer ring fire ejector pipe 170 and the middle ring fire ejector pipe 180 are arranged in an opposite direction, that is, the fuel gas in the two pipes is an opposite flow path.

Alternatively, the outer annular fire ejector pipe 170 and the middle annular fire ejector pipe 180 are arranged in the same direction, that is, the fuel gas in the two pipes is a same-direction flow path.

Referring to fig. 1, the upper inlet burner further includes an inner fire cover 300; the furnace end further comprises an inner surrounding ring 190, the inner surrounding ring 190 is positioned on the inner peripheral side of the middle surrounding ring 120, and an inner fire cover 300 is buckled on the inner surrounding ring 190; the outer ring fire ejector pipe 170 and the middle ring fire ejector pipe 180 are disposed at both sides of the inner enclosure 190, and an air passage 400 is formed therebetween.

Specifically, air may flow from the bottom of the burner body 100 through the air channel 400 to the outer fire cap 200 and around the copper core to provide secondary air for the combustion of the gas on the outer fire cap 200.

The embodiment also provides a gas stove which comprises the upper air inlet burner of the previous embodiment. The gas stove comprises the upper air inlet burner of the previous embodiment. The gas stove provided by the embodiment comprises the upper air inlet burner, and therefore the technical advantages and effects achieved by the gas stove also comprise the technical advantages and effects achieved by the upper air inlet burner, and are not repeated herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An upper intake air burner, comprising: a furnace end body (100) and an outer fire cover (200);

the burner body (100) at least comprises an outer peripheral ring (110) and a middle peripheral ring (120), a burner partition plate (130) is arranged between the outer peripheral ring (110) and the middle peripheral ring (120), the burner partition plate (130) divides the area between the outer peripheral ring (110) and the middle peripheral ring (120) into an outer premixing air cavity (140) and a middle premixing air cavity (150), a channel (160) for communicating the outer premixing air cavity (140) and the middle premixing air cavity (150) is arranged between the outer premixing air cavity (140) and the middle premixing air cavity (150), and the space of the outer premixing air cavity (140) is larger than that of the middle premixing air cavity (150);

the furnace end partition plate (130) is provided with a first outer ring outlet (131) and a second outer ring outlet (132), the first outer ring outlet (131) is communicated with the outer premixing air cavity (140) and the outer ring fire ejector pipe (170), and the second outer ring outlet (132) is communicated with the outer premixing air cavity (140) and the middle ring fire ejector pipe (180);

the outer fire cover (200) comprises an outer air mixing cavity (210) and an intermediate air mixing cavity (220) which are arranged in a spaced mode, the outer fire cover (200) is buckled on the burner body (100) so that the outer air mixing cavity (210) is communicated with the outer air mixing cavity (140), and the intermediate air mixing cavity (220) is communicated with the intermediate air mixing cavity (150).

2. The upper intake burner of claim 1, wherein a fire cover partition (230) is provided inside the outer fire cover (200), the fire cover partition (230) dividing an inner space of the outer fire cover (200) into the outer air mixing chamber (210) and the middle air mixing chamber (220);

the channel (160) is a vertical gap between the furnace end clapboard (130) and the fire cover clapboard (230).

3. The upper intake burner of claim 2, wherein the passages (160) are arranged in a plurality of groups, the plurality of groups of passages (160) being spaced apart along a circumference of the burner partition (130).

4. The upper air intake burner of claim 3, wherein the top end of the burner partition (130) is provided with concave platforms (133), and a convex platform (134) is formed between two adjacent groups of concave platforms (133);

the bottom surface of the fire cover partition plate (230) is tightly abutted to the top surface of the boss (134), and the vertical gap is formed between the bottom surface of the fire cover partition plate (230) and the concave table (133).

5. The upper inlet burner according to claim 1, characterized in that the channel (160) opens into the burner baffle (130).

6. The upper intake burner according to any one of claims 1 to 5, wherein the area of the channel (160) is set according to the magnitude of the medium ring power.

7. The upper intake burner according to any one of claims 1 to 5, wherein the outer ring fire ejector pipe (170) and the middle ring fire ejector pipe (180) are both extended in a horizontal direction.

8. The upper intake burner of claim 7, wherein the outer ring fire ejector pipe (170) is disposed opposite or in the same direction as the middle ring fire ejector pipe (180).

9. The upper inlet air burner of claim 8, further comprising an inner flame cap (300);

the furnace end further comprises an inner surrounding ring (190), the inner surrounding ring (190) is located on the inner peripheral side of the middle surrounding ring (120), and the inner fire cover (300) is buckled on the inner surrounding ring (190);

the outer ring fire ejector pipe (170) and the middle ring fire ejector pipe (180) are arranged on two sides of the inner surrounding ring (190), and an air channel (400) is formed between the two.

10. A gas range, comprising: the upper intake air burner of any one of claims 1 to 9.

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