WO2018166064A1 - Gas distribution structure and burner - Google Patents

Abstract

Disclosed are a gas distribution structure (100) and a burner (200) using the gas distribution structure (100). The gas distribution structure (100) comprises a first cavity (10) and a second cavity (20). The bottom surface of the first cavity (10) is provided with a first gas guide tube (14) and a second gas guide tube (16) spaced apart from each other, wherein the first gas guide tube (14) is in communication with a first chamber (12), the first gas guide tube (14) forms a first opening (142) on the bottom surface of the first chamber (12), and the second gas guide tube (16) forms a second opening (162) spaced apart from the first opening (142) on the bottom surface of the first chamber (12); and the second cavity (20) is provided in the first chamber (12), the second cavity (20) is provided with a second chamber (22), the bottom surface of the second chamber (22) is provided with a gas inlet hole (24) in communication with the second chamber (22), the gas inlet hole (24) is in communication with the second opening (162), and a cavity bottom surface (23) of the second cavity (20) is spaced and covers the first opening (142), and is provided with a partition wall (30) that separates the first opening (142) from the second opening (162).

Description

Gas separation structure and burner

Priority information

This application is filed with the National Intellectual Property Office of China on March 15, 2017, and the patent application number is 201710153994.4, submitted to the State Intellectual Property Office of China on March 15, 2017, and the patent application number is 201710153998.2, and it is submitted to China on March 15, 2017. Priority and interest in the patent application No. 201710153212.7 submitted by the State Intellectual Property Office, the patent application number is 201710153212.7 and the patent application number is 201710153037.1 submitted to the State Intellectual Property Office of China on March 15, 2017, and the full text is incorporated herein by reference. At the office.

Technical field

The invention relates to the field of kitchenware, in particular to a gas separation structure and a burner.

Background technique

In the burner of the related art, the mixed gas of gas and air enters the air cavity through the venturi, and is diverted from the fire cover on the air cavity to the entire air cavity, and is sprayed outward through the fire hole of the fire cover, burning After the formation of a flame. However, this causes uneven flames in all directions of the air chamber.

Summary of the invention

The gas separation structure of the embodiment of the invention is used for a burner, and the gas separation structure comprises:

a first cavity, the first cavity is provided with a first chamber, a bottom surface of the first cavity is spaced apart from a first air conduit and a second air conduit, and the first air conduit is connected to the first a first airway forming a first opening on a bottom surface of the first chamber, the second air conduit forming a second opening spaced apart from the first opening on a bottom surface of the first chamber ;

a second cavity disposed in the first chamber, the second cavity is provided with a second cavity, and a bottom surface of the second cavity is provided with an air inlet communicating with the second cavity The air inlet hole is in communication with the second opening;

The bottom surface of the second cavity is spaced above the first opening and is provided with a barrier wall separating the first opening and the second opening.

In the gas separation structure of the embodiment of the present invention, the gas emitted from the first air guide tube is dispersed by the bottom surface of the first cavity to the respective positions of the first chamber and then diffused upward. In this way, the first cavity is uniformly supplied to the respective positions of the first chamber to ensure uniformity of the flame formed by the first cavity. At the same time, the retaining wall allows the supply of air from the first chamber and the second chamber to be unaffected by each other.

In some embodiments, the retaining wall is annular and projects away from the second cavity, the intake aperture extending through the retaining wall.

In certain embodiments, the first airway and the second airway are venturis.

In some embodiments, the bottom surface of the first chamber is provided with a groove, the groove surrounds the second opening, and the groove and the retaining wall are cooperatively connected to separate the first An opening and the second opening.

In some embodiments, the outer wall of the first cavity is provided with a positioning portion for mounting the gas separation structure for mounting the gas separation structure, and the positioning portion includes a guiding portion and a bearing portion. The guiding portion is connected to the bearing portion, the guiding portion is used for guiding the installation of the gas separation structure, the guiding portion protrudes from the outer wall of the first cavity, and the guiding portion The height of the lead gradually increases from bottom to top.

In some embodiments, the hole wall of the air inlet hole includes a flow guiding surface, and the air blocking hole is provided with a shielding piece, and the shielding piece and the flow guiding surface are relatively spaced apart from each other and the guiding current The faces together form a flow guiding channel for directing gas into the second chamber.

In some embodiments, the flow guiding channel has a tapered shape along an intake direction of the intake port.

In some embodiments, the flow guiding surface is curved, the shielding piece comprises a top surface, a bottom surface and a connecting surface, the top surface and the bottom surface are flat, the connecting surface is connected to the top surface and The bottom surface, the connecting surface is curved and forms the flow guiding channel with the guiding surface.

In some embodiments, the bottom surface of the second chamber and the top surface are in the same plane.

In some embodiments, the shielding sheet includes a connection to the wall of the air inlet opening And a plurality of through holes are formed in the connecting portion, and the through holes communicate with the air inlet hole and the second chamber.

In some embodiments, the second cavity includes a fixing portion that connects the shielding sheet and the bottom surface of the second chamber.

In some embodiments, the first opening has a shape that gradually expands toward the first chamber along the first air duct, and the second opening is along the second air duct to the first The direction of a chamber is in a diverging shape.

In certain embodiments, the second cavity is removably mounted in the first chamber.

In certain embodiments, the first chamber includes a chamber wall, the top end of the chamber wall having a tapered shape in the direction of gas exit.

A burner according to an embodiment of the present invention includes the gas separation structure according to any of the above embodiments.

In the burner according to the embodiment of the present invention, the gas emitted from the first air guide tube is dispersed by the bottom surface of the first cavity to the respective positions of the first chamber and then diffused upward. In this way, the first cavity is uniformly supplied to the respective positions of the first chamber to ensure uniformity of the flame formed by the first cavity. At the same time, the retaining wall allows the supply of air from the first chamber and the second chamber to be unaffected by each other.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic perspective view of a gas separation structure according to an embodiment of the present invention.

2 is a schematic side view of a gas separation structure according to an embodiment of the present invention.

3 is a schematic cross-sectional view showing a gas separation structure according to an embodiment of the present invention.

4 is a perspective view of a first cavity of an embodiment of the present invention.

Figure 5 is a perspective view of a second cavity of an embodiment of the present invention.

Fig. 6 is another perspective view of the second cavity of the embodiment of the present invention.

Figure 7 is a schematic cross-sectional view of a second cavity of an embodiment of the present invention.

Fig. 8 is a schematic cross-sectional view of a burner according to an embodiment of the present invention.

Fig. 9 is a perspective exploded view of the burner of the embodiment of the present invention.

detailed description

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions.

In addition, the embodiments of the present invention described below in conjunction with the accompanying drawings are merely illustrative of the embodiments of the invention, and are not to be construed as limiting.

Referring to FIG. 1 , FIG. 3 and FIG. 4 , a gas separation structure 100 according to an embodiment of the present invention includes a first cavity 10 and a second cavity 20 .

The first chamber 10 is open with a first chamber 12. The bottom surface of the first cavity 10 is spaced apart from the first air guiding tube 14 and the second air guiding tube 16. The first air conduit 14 communicates with the first chamber 12. The first air conduit 14 forms a first opening 142 in the bottom surface of the first chamber 12. The second air guiding tube 16 forms a second opening 162 spaced apart from the first opening 142 on the bottom surface of the first chamber 12.

The second cavity 20 is disposed in the first chamber 12. The second chamber 20 is open with a second chamber 22. The bottom surface of the second chamber 22 is provided with an air inlet hole 24 communicating with the second chamber 22. The intake port 24 is in communication with the second opening 162.

The cavity bottom surface 23 of the second cavity 20 is spaced over the first opening 142 and is provided with a barrier wall 30 separating the first opening 142 and the second opening 162.

In the gas separation structure 100 in the embodiment of the present invention, the gas emitted from the first air guide tube 14 is dispersed by the bottom surface of the first cavity 10 to the respective positions of the first chamber 12 and then diffused upward. In this way, the first cavity 10 is supplied with gas more uniformly to the respective positions of the first chamber 12, ensuring that the flame formed by the first cavity 10 is uniform. At the same time, the retaining wall 30 can supply the gas phase of the first chamber 12 and the second chamber 22 Do not affect each other.

Further, in certain embodiments, the gas separation structure 100 can also achieve a red-blue combined combustion flame.

Specifically, referring to FIG. 9, the first chamber 12 in the embodiment of the present invention corresponds to the middle ring gas chamber of the combustor 200, and the second chamber 22 corresponds to the inner ring gas chamber of the combustor 200. The fire cover disposed in the second chamber 22 is a porous ceramic plate 2047.

Thus, the gas is burned on the porous ceramic plate 2047, and the porous ceramic plate 2047 is turned red to realize infrared cooking. The gas is burned at the fire cover on the first chamber 12 to form a blue central ring flame, thereby subtly realizing the red-blue combined combustion flame, improving combustion performance and heating efficiency.

Specifically, in the embodiment of the present invention, the first cavity 10 and the second cavity 20 are substantially cylindrical.

Thus, the structure is simple and easy to manufacture. At the same time, it is easier to allow the gas to enter the first chamber 12 and the second chamber 22 to be smoother, to ensure the flow rate of the gas, thereby ensuring the stability of combustion of the gas at the fire cover on the first chamber 12 and the second chamber 22.

In one example, the first cavity 10 and the second cavity 20 can be made of copper.

As such, the first cavity 10 and the second cavity 20 can withstand high temperatures and prolong the service life of the gas separation structure 100. At the same time, the first cavity 10 and the second cavity 20 are easily cast and formed, and the first opening 142, the second opening 162 and the air inlet hole 24 are formed to achieve better gas separation.

In some embodiments, the retaining wall 30 is annular and projects away from the second cavity 20, and the intake aperture 24 extends through the retaining wall 30.

As such, the length of the air intake opening 24 is increased so that more gas can be collected into the second chamber 22, ensuring the amount of air supplied to the second chamber 22.

Of course, the distance that the retaining wall 30 protrudes from the bottom surface 23 of the cavity can be adjusted with the size of the second chamber 22 to optimize the air supply amount and gas velocity of the second chamber 22.

In certain embodiments, the first airway tube 14 and the second airway tube 16 are venturi tubes.

In some embodiments, the bottom surface of the first chamber 12 is provided with a groove 122. The groove 122 surrounds the second opening 162. The groove 122 and the blocking wall 30 are cooperatively connected to partition the first opening 142 and the first opening. Two openings 162.

In this way, the second cavity 20 and the first cavity 10 are closely connected, the first opening 142 and the second opening 162 are completely blocked, and the gas separation performance of the gas separation structure 100 is greatly improved, thereby avoiding the gas separation structure 100 being After a long period of use in a high temperature environment, deformation of the first cavity 10 and the second cavity 20 results in a connection that is not tight and affects the gas separation performance.

Specifically, the retaining wall 30 is inserted into the recess 122.

Thus, when the gas separation structure 100 is operated in a high temperature environment, the retaining wall 30 is thermally expanded, so that the combination of the retaining wall 30 and the recess 122 is more tight, and the gas in the first chamber 12 and the second chamber 22 can be preferably prevented. The circulation between them ensures the gas separation effect of the gas separation structure 100.

Referring to FIG. 2 together, in some embodiments, the outer wall of the first cavity 10 is provided with a positioning portion 18 for mounting the gas separation structure 100. The positioning portion 18 includes a guiding portion 182 and a bearing portion 184. The guiding portion 182 is connected to the bearing portion 184. The guiding portion 182 is used for guiding the installation of the gas separation structure 100. The guiding portion 182 protrudes from the first cavity 10 The outer wall, and the height of the guiding portion 182 gradually increases from bottom to top.

In the embodiment of the present invention, each of the two sides of the first cavity 10 is provided with two positioning portions 18 spaced apart. As such, the installation of the gas separation structure 100 is relatively stable, avoiding displacement of the gas separation structure 100 in the burner 200.

In some embodiments, the hole wall of the air inlet hole 24 includes a flow guiding surface 242, and a shielding piece 244 is disposed in the air inlet hole 24, and the shielding piece 244 and the flow guiding surface 242 are disposed at a relatively interval and form together with the flow guiding surface 242. A flow guiding passage 246 for guiding the gas into the second chamber 22.

As such, the gas enters the second chamber 22 along the flow conduit 246, greatly increasing the velocity and fluency of the gas into the second chamber 22, making the combustion of the gas outside of the gas separation structure 100 more stable.

Specifically, when the gas separation structure 100 is used, the mixed gas formed by the gas and the air is sprayed toward the shielding piece 244 to form an air flow, and the shielding piece 244 turns the direction of the mixed gas to the guiding flow channel 246, and the mixed gas enters the second cavity through the guiding channel 246. Inside the chamber 22.

Referring to FIGS. 5-7, in some embodiments, the flow guiding passage 246 has a tapered shape along the intake direction of the intake port 24.

In this way, the gas is more smoothly passed through the flow guiding passage 246 into the second chamber 22 of the gas separation structure 100, while also increasing the flow rate of the gas.

In some embodiments, the flow guiding surface 242 is curved, and the shielding piece 244 includes a top surface 2442, a bottom surface 2444, and a connecting surface 2446. The top surface 2442 and the bottom surface 2444 are planar, and the connecting surface 2446 is connected to the top surface 2442 and the bottom surface 2444. The connecting surface 2446 is curved and forms a flow guiding passage 246 with the flow guiding surface 242.

Thus, as the gas enters the second chamber 22 along the flow path 246, the curved flow surface 242 reduces the resistance to gas and thereby achieves a faster rate. At the same time, the curved flow guiding surface 242 makes the gas flow more stable, avoiding the formation of turbulence or turbulence after the gas enters the second chamber 22, and the situation affecting the combustion stability of the gas occurs.

Specifically, the junction of the flow guiding surface 242 and the bottom surface of the second chamber 22 is a rounded curved surface.

As such, the fluency of the gas into the second chamber 22 is increased.

Further, the flow guiding surface 242 may also be provided as a slope.

In this way, the purpose of assisting the gas to smoothly enter the second chamber 22 can also be achieved.

Preferably, when the flow guiding surface 242 is a sloped surface, the acute angle formed by the flow guiding surface 242 and the bottom surface of the second chamber 22 is 45 degrees.

As such, the rate at which gas enters the second chamber 22 can be further optimized.

The curved connecting surface 2446 causes the gas to impinge on the bottom surface 2444 and is directly diverted, reducing the velocity loss of the gas. The connecting surface 2446 cooperates with the flow guiding surface 242 to form a flow guiding passage 246 for the gas to smoothly enter the second chamber 22.

Further, in the embodiment of the present invention, the distance between the connecting surface 2446 and the flow guiding surface 242 is 0.5 cm - 1.5 cm.

Thus, when the gas passes through the flow guiding passage 246 after being deflected by the shielding piece 244, the gas is squeezed and the flow rate is increased due to the narrowing of the air flow path. At the same time, the gas creates a negative pressure below the flow guiding channel 246, drawing more gas into the flow guiding channel 246, further increasing the flow rate of the gas.

In some embodiments, the bottom surface 23 and the top surface 2442 of the second chamber 22 are in the same plane.

In this way, the gas flows smoothly and rapidly after the gas enters the second chamber 22 from the air inlet hole 24, and the phenomenon that the gas enters the second chamber 22 when the top surface 2442 and the bottom surface 23 of the cavity are not in the same plane is prevented from forming a turbulent flow. It is further ensured that the combustion of the gas from the second chamber 22 is stable after combustion.

In some embodiments, the same plane refers to the same horizontal plane.

In some embodiments, the shielding piece 244 includes a connecting portion 2448 connected to the hole wall of the air inlet hole 24, and the connecting portion 2448 defines a plurality of through holes 2441, and the through hole 2441 communicates with the air inlet hole 24 and the second chamber. twenty two.

Since the shielding piece 244 is turned to the gas, a small portion of the gas is turned to the direction of the connecting portion 2448, and the opening through hole 2441 can introduce the portion of the gas into the second chamber 22, thereby avoiding gas loss and increasing the second cavity. The amount of gas supplied to the chamber 22.

Specifically, in the embodiment of the present invention, there are four through holes 2441 and are evenly disposed on the connecting portion 2448.

In this way, the effect of shunting the through holes 2441 is improved.

Of course, the number of the through holes 2441 is not limited to the number of the embodiments discussed above, but may be adjusted according to the magnitude of the gas flow rate and the size of the second chamber 22 to achieve a better gas separation effect.

In some embodiments, the second cavity 20 includes a securing portion 26 that connects the shutter 244 to the cavity bottom surface 23.

Since the gas separation structure 100 operates in a high temperature environment, the shielding sheet 244 in a high temperature environment is easily deformed, affecting the gas separation effect of the gas separation structure 100. The fixing portion 26 further reinforces the shielding piece 244 to ensure that the shielding piece 244 is stably disposed on the second cavity 20, and is not easily deformed, thereby achieving a better gas separation effect and improving the reliability of the gas separation structure 100.

Specifically, in the embodiment of the present invention, the fixing portion 26 has a triangular prism shape.

Thus, the fixing portion 26 can stably fix the shielding piece 244 to the second cavity 20 due to the strong stability of the triangle.

Further, the fixing portion 26 may also have a cylindrical shape.

As such, the smooth surface of the fixed portion 26 does not affect the flow of air entering the second chamber 22, further improving the smoothness of the air flow within the second chamber 22.

In some embodiments, the first opening 142 has a tapered shape along the first air duct 14 toward the first chamber 12, and the second opening 162 is along the second air duct 16 toward the first chamber 12. The shape of the diverging.

In this way, the gas is more smoothly passed into the first chamber 12 through the first air guiding tube 14 and into the second chamber 22 through the second air guiding tube 16, which also increases the flow rate of the gas, and promotes the gas in the first The stability of combustion at the fire cover on a cavity 10 and a second cavity 20.

In certain embodiments, the second cavity 20 is removably mounted in the first chamber 12.

As such, it is easy to disassemble the second cavity 20 to clean the first cavity 10 and the second cavity 20, keeping the air separation structure 100 clean.

In some embodiments, the second cavity 20 is mounted in the first cavity 10 in addition to the retaining wall 30 and the recess 122 on the bottom surface of the first chamber 12, and can also pass over the second cavity 20. The positioning member 28 is disposed to define a positioning hole on the bottom surface of the first chamber 12, and the first cavity 10 is mounted into the second cavity 20 by the cooperation of the positioning member 28 and the positioning hole 11.

As such, the first cavity 10 can be stably installed in the second cavity 20. The relative slippage between the first cavity 10 and the second cavity 20 is less likely to occur, thereby ensuring the gas separation performance of the gas separation structure 100. At the same time, the mounting and dismounting of the second cavity 20 is also facilitated.

Specifically, there are four positioning members 28, and four vertices having a rectangular shape are distributed on the bottom surface 23 of the cavity.

In some embodiments, the inner wall of the second chamber 22 is provided with a stepped mounting portion 222. The mounting portion 222 is for mounting a fire cover.

In this way, the fire cover can be more stably installed on the gas separation structure 100, and there is no left and right displacement, so that the gas in the gas separation structure 100 forms a stable flame at the fire cover. At the same time, the stepped mounting portion 222 can also prevent the gas in the gas separation structure 100 from leaking from the gap between the mounting portion 222 and the second cavity 20, thereby affecting the heating effect.

In the embodiment of the present invention, the side wall of the second cavity 20 is provided with a receiving portion 21, and the receiving portion 21 is used to make the gas separation structure 100 more stable when the gas separation structure 100 is installed.

In certain embodiments, the first chamber 12 includes a chamber wall 124, and the tip end 126 of the chamber wall 124 is tapered in the direction of gas exit.

In this way, the gas is facilitated to smoothly enter the fire cover disposed on the first chamber 12 from the first chamber 12, and the flow rate of the gas is also increased, thereby promoting the fire of the gas on the first chamber 10. The stability of the combustion at the cover.

Specifically, the top end 126 of the chamber wall 124 slopes in the direction of gas exit.

Preferably, the top end 126 of the chamber wall 124 and the horizontal direction form an acute angle of 45 degrees.

As such, the fluency and speed of the gas from the first chamber 12 into the fire cover disposed on the first chamber 12 can be further optimized.

Referring to Figures 8 and 9, a combustor 200, in accordance with an embodiment of the present invention, includes a gas separation structure 100 of any of the above embodiments.

In the combustor 200 in the embodiment of the present invention, the gas emitted from the first air guide tube 14 is dispersed by the bottom surface of the first cavity 10 to the respective positions of the first chamber 12 and then diffused upward. In this way, the first cavity 10 is supplied with gas more uniformly to the respective positions of the first chamber 12, ensuring that the flame formed by the first cavity 10 is uniform. At the same time, the retaining wall 30 allows the supply of air from the first chamber 12 and the second chamber 22 to be unaffected by each other.

Specifically, in certain embodiments, when the gas separation structure 100 is applied to the combustor 200, the gas separation structure 100 can function as a gas separation structure 100 for the rings and inner rings of the combustor 200. A porous ceramic plate 2047 can be placed in the second chamber 22, and the gas injected from the gas separation structure 100 is burned at the porous ceramic plate 2047, and the porous ceramic plate 2047 is heated to form an infrared cooking device, thereby achieving a very small fire and a slow charcoal fire. Stew and other functions.

The combustor 200 of an embodiment of the present invention further includes a base 202 and an upper air intake structure 204.

A gas inlet 2022 is formed in the base 202. The bottom of the base 202 is provided with a gas inlet passage 2026. The base 202 is provided with a liquid receiving tray 2024. The base 202 and the liquid receiving tray 2024 are spaced apart to form a first air replenishing passage 206. a second air replenishing passage is opened in the upper air inlet structure 204 208. The upper air intake structure 204 is further provided with two third air guiding tubes 2042. The third air duct 2042 extends into the gas intake chamber 2022.

A gas chamber is disposed on the upper air intake structure 204. In an embodiment of the invention, the gas chamber on the upper air intake structure 204 corresponds to the outer ring gas chamber 2044. An outer ring fire cover 2046 is mounted on the outer ring gas chamber 2044. The first chamber 12 in the gas separation structure 100 is equivalent to the middle ring gas chamber, and the first air guide tube 14 and the second air guide tube 16 extend into the gas inlet chamber 2022, and the middle chamber fire cover 2043 is mounted on the first chamber 12. The second chamber 22 in the first chamber 12 corresponds to an inner ring gas chamber. A porous ceramic plate 2047 is mounted in the second chamber 22.

When the burner 200 of the embodiment of the present invention is in operation, the gas is input from the gas inlet passage 2026, and is injected into the gas inlet 2022 through the nozzle 2028 disposed on the gas inlet passage 2026, and the injected gas is in the gas inlet 2022. A negative pressure is generated to draw primary air A from the first air replenishing passage 206. As shown in FIG. 8, the primary air and the gas are premixed between the gas inlets 2022 to form a mixed gas and pass through the upper air intake structure 204. A portion of the mixed gas is guided into the outer ring gas chamber 2044 via the third air guiding tube 2042. As shown by A1, the outer ring fire cover 2046 is sprayed outward and burned to form an outer ring fire.

Another portion of the gas and air in the gas inlet 2022 (shown as line A2 in FIG. 8) is guided through the first air conduit 14 and the second air conduit 16 into the first chamber 12 and the first The two chambers 22, the mixed gas of the first chamber 12 is sprayed outward through the middle ring fire cover 2043, and burns to form a middle ring fire. The flow direction of the mixed gas entering the first chamber 12 can be indicated by a broken line A21.

The mixed gas in the second chamber 22 is sprayed outward through the porous ceramic plate 2047, and is burned to form an inner ring fire of infrared rays. The flow direction of the mixed gas entering the second chamber 22 can be indicated by a broken line A22.

The second air replenishing passage 208 can supplement the secondary air when the gas at the middle ring fire cover 2043 and the porous ceramic plate 2047 is burned, and/or replenish the secondary air when the gas inside the outer ring fire cover 2046 is burned, and the secondary air passes through the first The second air replenishing passage 208 enters the inside of the combustor 200 and flows upward, thereby achieving supplemental secondary air. The flow direction of the secondary air entering the burner 200 is indicated by a broken line B with an arrow in the figure.

In this way, the burner 200 is divided by the third air guiding tube 2042, the first air guiding tube 14 and the second air guiding tube 16, and the burner 200 of the three-ring fire is realized, and the heating efficiency of the burner 200 is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " After, "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description, and does not indicate or imply the indicated device or component. It must be constructed and operated in a particular orientation, and is not to be construed as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. Signs, structures, materials or features are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims (15)

1. A gas separation structure for a burner, characterized in that the gas separation structure comprises:

   a first cavity, the first cavity is provided with a first chamber, a bottom surface of the first cavity is spaced apart from a first air conduit and a second air conduit, and the first air conduit is connected to the first a first airway forming a first opening on a bottom surface of the first chamber, the second air conduit forming a second opening spaced apart from the first opening on a bottom surface of the first chamber ;

   a second cavity disposed in the first chamber, the second cavity is provided with a second cavity, and a bottom surface of the second cavity is provided with an air inlet communicating with the second cavity The air inlet hole is in communication with the second opening;

   The bottom surface of the second cavity is spaced above the first opening and is provided with a barrier wall separating the first opening and the second opening.
2. The gas separation structure according to claim 1, wherein said retaining wall is annular and protrudes away from said second cavity, and said intake hole extends through said retaining wall.
3. The gas separation structure according to claim 1, wherein said first air guiding tube and said second air guiding tube are venturi tubes.
4. The gas separation structure according to claim 1, wherein a groove is formed in a bottom surface of the first chamber, the groove surrounds the second opening, and the groove and the retaining wall cooperate Connecting to separate the first opening from the second opening.
5. The air separation structure according to claim 1, wherein the outer wall of the first cavity is provided with a positioning portion for mounting the gas separation structure, and the positioning portion includes a guiding portion and a bearing portion. The guiding portion is connected to the bearing portion, the guiding portion is for guiding the installation of the gas separation structure, the guiding portion protrudes from the outer wall of the first cavity, and the guiding The height of the department gradually increases from the bottom to the top.
6. The air separation structure according to claim 1, wherein the hole wall of the air inlet hole comprises a flow guiding surface, and the air blocking hole is provided with a shielding piece, and the shielding piece and the guiding surface are opposite Interval A flow guiding passage for guiding gas into the second chamber is disposed and formed together with the flow guiding surface.
7. The gas separation structure according to claim 6, wherein said flow guiding passage has a shape of a diverging shape in an intake direction of said intake port.
8. The gas separation structure according to claim 6, wherein the flow guiding surface has an arc shape, and the shielding sheet comprises a top surface, a bottom surface and a connecting surface, wherein the top surface and the bottom surface are planar, The connecting surface connects the top surface and the bottom surface, the connecting surface is curved and forms the flow guiding channel with the flow guiding surface.
9. The gas separation structure according to claim 8, wherein the bottom surface of the second chamber and the top surface are in the same plane.
10. The air separation structure according to claim 6, wherein the shielding piece comprises a connecting portion connected to the hole wall of the air inlet hole, and the connecting portion is provided with a plurality of through holes, the through hole The intake port and the second chamber are connected.
11. The gas separation structure according to claim 6, wherein said second cavity includes a fixing portion that connects said shielding sheet and a bottom surface of said second chamber.
12. The gas separation structure according to claim 1, wherein said first opening has a shape that gradually expands toward said first chamber along said first air conduit, said second opening being along said The second air conduit has a tapered shape toward the first chamber.
13. The gas separation structure according to claim 1, wherein said second cavity is detachably mounted in said first chamber.
14. The gas separation structure according to claim 1, wherein said first chamber comprises a chamber wall, and a top end of said chamber wall has a tapered shape in a gas discharge direction.
15. A burner characterized by comprising the gas separation structure according to any one of claims 1-14.

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