A gas burner with stable flame transmission

Abstract

A gas burner with stable fire transfer includes an air mixing chamber, an outer ring fire cover having an annular outer ring fire cover body, and an inner ring fire cover. A secondary air supply channel communicating with a secondary air annulus inside the air mixing chamber is provided on the side wall of the air mixing chamber, a radially extending main fire transfer groove is provided at the bottom of the outer ring fire cover body, a partial upper wall of the secondary air supply channel corresponding to the main fire transfer groove penetrates upward to form a through groove, and the main fire transfer groove cover is arranged at the top of the through groove to form a fire transfer channel. In the present invention, a part of the secondary air in the secondary air supply channel is added to the fire transfer channel, thereby promoting full, efficient and stable combustion of the flame in the fire transfer channel, while the remaining secondary air continues to be added to the secondary air annulus to ensure stable combustion of the inner ring fire; at the moment of ignition of the fire transfer channel, the secondary air supply channel below it can act as a pressure diffusion chamber, thereby ensuring the stability of the internal pressure in the fire transfer channel, and realizing stable and rapid fire transfer.

Description

Technical Field

[0001] The invention relates to the field of gas stoves, and in particular to a gas burner with stable flame transmission. Background Art

[0002] In order to smoothly transfer the inner ring fire to the outer ring, a fire transfer structure is generally provided on the gas burner, and the fire transfer structure is generally provided above the outer ring fire cover, such as: Chinese utility model patent No. ZL201621154541.0 (authorization announcement No. CN206112934U) discloses a burner fire cover, which includes a fire cover body, and a fire starter groove is provided on the top of the fire cover body. This will cause the upper surface of the fire cover to be uneven, and the overflow will easily block the fire transfer structure, resulting in the failure of the inner ring fire to be transferred to the outer ring.

[0003] Furthermore, a Chinese invention patent with application number 201410116688.X (publication number CN103900086A) discloses a high-efficiency burner with hidden fire transfer grooves, which includes a burner body, a fire cover seat, an inner ring fire cover and an outer ring fire cover. It adopts a staged combustion technology, and the diffusion chamber is independently controlled by three ejector tubes, each tube controls one ring. The upper surface of the fire cover seat has four protrusions, each part of the protrusion is divided into two rings, and each ring is connected to the corresponding ring of the diffusion chamber. The lower surface of the outer ring fire cover has four corresponding protrusions, each protrusion is divided into two rings, the outer ring has a circular fire discharge mode, and the middle ring has a groove-shaped fire discharge mode. The middle part of the four protrusions is a secondary air oxygenation groove, and the secondary air of the middle ring and the inner ring can be supplemented through four notches. The upper surface of the outer ring fire cover does not have a traditional ignition groove, and the flame transfer is completed through a hidden fire transfer groove. The fire transfer groove structure in this patent is a relatively closed channel. The air in the fire transfer groove is insufficient, resulting in fire transfer failure or affecting the fire transfer speed. When combustion occurs in the fire transfer groove, the fire transfer groove cannot replenish air to the inner ring, resulting in incomplete combustion of the burner and low thermal efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a gas burner with stable flame transfer and fast flame transfer speed in view of the prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a gas burner with stable fire transfer, comprising a mixing chamber, an outer ring fire cover with a ring-shaped outer ring fire cover body and an inner ring fire cover, the top of the above-mentioned mixing chamber is provided with an inner ring mixing chamber and an outer ring mixing chamber opening upward in sequence from the inside to the outside, the above-mentioned inner ring fire cover and the outer ring fire cover are respectively covered on the inner ring mixing chamber and the outer ring mixing chamber, a secondary air annular channel is provided between the above-mentioned inner ring mixing chamber and the outer ring mixing chamber, and a secondary air supply channel communicating with the above-mentioned secondary air annular channel is provided on the side wall of the mixing chamber, characterized in that a radially extending main fire transfer groove is provided at the bottom of the outer ring fire cover body, and a partial upper wall of the secondary air supply channel corresponding to the main fire transfer groove penetrates upward to form a through groove, and the above-mentioned main fire transfer groove cover is provided at the top of the through groove to form a fire transfer channel.

[0006] Preferably, the inner ring fire cover comprises a cylindrical inner ring fire cover body, the side wall of which is provided with an inner ring fire transfer hole, and the inner ring fire transfer hole is opposite to the above-mentioned fire transfer channel, so that the inner ring fire can be smoothly transferred to the fire transfer channel.

[0007] In order to make the flame in the inner ring fire transfer hole burn closer to the fire transfer channel and realize rapid fire transfer, preferably, the channel of the inner ring fire transfer hole extends horizontally.

[0008] Furthermore, preferably, the top cover of the inner ring fire cover body is sealed with an end cover, and the side edge of the end cover corresponding to the inner ring fire transfer hole horizontally extends outward to form a fire transfer barrier. The fire transfer barrier can prevent the overflow liquid from dripping into the inner ring fire transfer hole, thereby preventing the inner ring fire transfer hole from being blocked by the overflow liquid. At the same time, the fire transfer barrier can press the flame ejected from the inner ring fire transfer hole, so that the flame is closer to the fire transfer channel.

[0009] Preferably, an ignition groove communicating with the outer ring air mixing chamber is provided on at least one side groove wall of the through groove. The ignition groove extends horizontally and is inclined from the outer ring air mixing chamber side to the inner ring fire cover side relative to the groove wall of the through groove where it is located. The ignition groove is used to guide the inner ring fire on the inner ring fire cover to the fire transfer channel.

[0010] Preferably, an outer ring fire transfer groove communicating with the outer ring air mixing chamber is provided on at least one side groove wall of the through groove. The outer ring fire transfer groove extends horizontally and is inclined from the outer ring air mixing chamber side to the outer side of the air mixing chamber relative to the groove wall of the through groove where it is located. The outer ring fire transfer groove is used to transfer the flame in the fire transfer channel to the main fire hole of the outer ring fire cover.

[0011] Preferably, the above-mentioned ignition groove and the outer ring fire transfer groove are simultaneously provided on at least one side of the groove wall of the through groove, and the ignition groove and the outer ring fire transfer groove are connected through the first auxiliary fire transfer groove. By providing the first auxiliary fire transfer groove, the flames in the ignition groove and the outer ring fire transfer groove can burn stably (mainly by reducing the air flow speed), and can play the role of fire transfer between the ignition groove and the outer ring fire transfer groove.

[0012] The above-mentioned first auxiliary fire transfer groove can be implemented in many specific ways, among which a preferred implementation is: the main fire transfer groove is matched with the through groove, the ignition groove and the outer ring fire transfer groove both pass through the top of the groove wall of the through groove where they are located, and a second groove extending along the length direction of the corresponding groove wall is opened on at least one of the bottom end of the groove wall of the main fire transfer groove or the top end of the groove wall of the through groove. When the main fire transfer groove cover is arranged on the through groove, the second groove is combined with the groove wall of the corresponding main fire transfer groove or the through groove to form the above-mentioned first auxiliary fire transfer groove.

[0013] Preferably, a second auxiliary fire transfer groove is provided on at least one side of the groove wall of the main fire transfer groove, which is connected with at least one main fire hole and passes through the corresponding position of the outer side wall of the outer ring fire cover body. The flame in the fire transfer channel can be transferred to the main fire holes on both sides of the main fire transfer groove through the second auxiliary fire transfer groove.

[0014] Preferably, the outer side wall of the outer ring fire cover body extends outwardly along the circumferential direction to form a liquid retaining ring eaves, and the outer side end of the main fire transfer groove is located on the inner side of the liquid retaining ring eaves, thereby effectively preventing the overflow liquid dripping onto the top surface of the outer ring fire cover from flowing into the main fire transfer groove by adhering to the wall, thereby preventing the main fire transfer groove from being blocked by the overflow liquid.

[0015] Preferably, the through groove is formed by penetrating upward from the middle upper wall of the secondary air supply channel where it is located. In this way, the secondary air in the middle of the secondary air supply channel can be fully replenished into the fire transfer channel, and the secondary air on both sides can be more smoothly replenished into the secondary air loop, thereby ensuring stable and rapid fire transfer.

[0016] Compared with the prior art, the advantages of the present invention are: a part of the secondary air in the secondary air supply channel of the present invention is supplemented into the fire transfer channel, thereby promoting full, efficient and stable combustion of the flame in the fire transfer channel, while the remaining secondary air continues to be supplemented into the above-mentioned secondary air ring channel, ensuring the stable combustion of the inner ring fire, thereby realizing the directional supplementation of secondary air; in addition, at the moment of ignition of the fire transfer channel, the secondary air supply channel below it can act as a diffusion chamber, thereby ensuring the stability of the internal pressure in the fire transfer channel, thereby realizing stable and rapid fire transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a burner in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Enlarged view of part I;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure in another direction;

[0020] Figure 4 This is a structural exploded view of a burner in an embodiment of the present invention;

[0021] Figure 5 for Figure 4 Enlarged view of part II;

[0022] Figure 6 It is a schematic diagram of the structure of the outer ring fire cover in an embodiment of the present invention;

[0023] Figure 7 for Figure 6 A schematic diagram of the structure in another direction;

[0024] Figure 8 for Figure 7 Cross-sectional view along direction BB;

[0025] Fig. 9 for Figure 3 Cross-sectional view along AA direction;

[0026] Fig.10 for Fig. 9 Enlarged view of part III. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 10 As shown, a gas burner with stable flame transmission includes a gas mixing chamber 1, an outer ring fire cover having a ring-shaped outer ring fire cover body 2, and an inner ring fire cover. In this embodiment, the gas mixing chamber 1 and the base 10 at the bottom are integrated, and the top of the gas mixing chamber 1 is provided with an inner ring gas mixing chamber 15 and an outer ring gas mixing chamber 13 which are open upwards in sequence from the inside to the outside, and the inner ring fire cover and the outer ring fire cover are respectively covered on the inner ring gas mixing chamber 15 and the outer ring gas mixing chamber 13, and a secondary air annular channel 14 is provided between the inner ring gas mixing chamber 15 and the outer ring gas mixing chamber 13, and a secondary air supply channel 11 which is communicated with the secondary air annular channel 14 is provided on the side wall of the gas mixing chamber 1.

[0029] Furthermore, a main fire transfer groove 24 extending radially through is provided at the bottom of the outer ring fire cover body 2, and the inner top wall of the main fire transfer groove 24 is inclined upward from the inside to the outside. In this embodiment, the outer ring fire cover body 2 includes an annular top wall 21 and inner and outer ring walls 22, 23 extending vertically or obliquely downward from the inner and outer edges of the annular top wall 21. A protrusion 5 is convexly provided on the inner bottom surface of the outer ring fire cover body 2, and a groove extending radially is provided at the bottom of the protrusion 5, which is the main fire transfer groove 24. In addition, main fire holes 20 and flame stabilizing holes 27 are provided on the outer ring wall 23 at intervals along the circumferential direction. The flame stabilizing hole 27 is located above the main fire hole 20 and is spaced apart from the main fire hole 20. In addition, the outer edge of the above-mentioned annular top wall 21 extends horizontally outward and then vertically downward to form an annular liquid-blocking eaves 26. A gap is left circumferentially between the liquid-blocking eaves 26 and the outer side surface of the outer annular wall 23, and it can horizontally block the above-mentioned flame-stabilizing hole 27. At the same time, the outer end of the main fire transfer groove 24 is located on the inner side below the liquid-blocking eaves 26, thereby effectively preventing the overflow liquid dripping onto the top surface of the outer ring fire cover from flowing into the flame-stabilizing hole 27 and the main fire transfer groove 24 respectively through the wall-adhering effect, thereby preventing the flame-stabilizing hole 27 and the main fire transfer groove 24 from being blocked by the overflow liquid.

[0030] Furthermore, the local upper wall of the secondary air supply channel 11 corresponding to the main fire transfer groove 24 penetrates upward to form a through groove 12, and the through groove 12 matches the above-mentioned main fire transfer groove 24, and the main fire transfer groove 24 is covered on the upper part of the through groove 12 to form the fire transfer channel 4. In this way, a part of the secondary air in the secondary air supply channel 11 is supplemented into the fire transfer channel 4, promoting the full and efficient combustion of the gas in the fire transfer channel 4, while the remaining secondary air continues to be supplemented into the above-mentioned secondary air annular channel 14, ensuring the stable combustion of the inner ring fire, and realizing the directional supplement of the secondary air. Preferably, the through groove 12 is formed by penetrating upward from the middle upper wall of the secondary air supply channel 11 where it is located, so that the secondary air in the middle of the secondary air supply channel 11 can be fully supplemented into the fire transfer channel 4, and the secondary air on both sides can be supplemented into the secondary air annular channel 14 more smoothly. In addition, under normal circumstances, at the moment of fire in the fire transmission channel 4, the internal pressure of the fire transmission channel 4 increases sharply, which can easily lead to interruption of fire transmission. The present application adopts the above design. At the moment of fire in the fire transmission channel 4, the secondary air supply channel 11 below it can act as a pressure diffusion chamber, thereby ensuring the stability of the internal pressure in the fire transmission channel 4, thereby achieving stable and rapid fire transmission.

[0031] In this embodiment, the inner ring fire cover comprises a cylindrical inner ring fire cover body 31 and an end cover 32 sealed on the top of the inner ring fire cover body 31. An inner ring fire transfer hole 311 is provided on the side wall of the inner ring fire cover body 31, and the inner ring fire transfer hole 311 is opposite to the fire transfer channel 4, so that the inner ring fire can be smoothly transferred to the fire transfer channel 4. In order to make the flame in the inner ring fire transfer hole 311 closer to the fire transfer channel 4 when burning and realize rapid fire transfer, the channel of the inner ring fire transfer hole 311 extends horizontally. In addition, the side edge of the end cover 32 corresponding to the inner ring fire transfer hole 311 extends horizontally outward to form a fire transfer eaves 321, which can prevent overflow from dripping into the inner ring fire transfer hole 311, thereby preventing the inner ring fire transfer hole 311 from being blocked by overflow, and at the same time, the fire transfer eaves 321 can press the flame ejected from the inner ring fire transfer hole 311, so that the flame is closer to the fire transfer channel 4.

[0032] Furthermore, two groove walls of the through groove 12 are respectively provided with ignition grooves 121, and the ignition grooves 121 on both sides are symmetrically arranged with the radial center axis of the through groove 12 as the center, each ignition groove 121 extends horizontally, and is respectively communicated with the outer ring gas mixing chamber 13, and is respectively inclined from the outer ring gas mixing chamber 13 side to the inner ring fire cover side relative to the groove wall of the through groove 12 where it is located, and each ignition groove 121 is used to guide the inner ring fire on the inner ring fire cover to the fire transfer channel 4. At the same time, outer ring fire transfer grooves 122 are respectively provided on the two groove walls of the through groove 12, and the outer ring fire transfer grooves 122 on both sides are symmetrically arranged with the radial central axis of the through groove 12 as the center, and each outer ring fire transfer groove 122 extends horizontally and is respectively connected to the outer ring gas mixing chamber 13, and is respectively inclined from the outer ring gas mixing chamber 13 side to the outside of the gas mixing chamber 1 relative to the groove wall of the through groove 12 where it is located, and each outer ring fire transfer groove 122 is used to transfer the flame in the fire transfer channel 4 to the main fire hole 20 of the outer ring fire cover. It can be seen that the provision of the ignition groove 121 and the outer ring fire transfer groove 122 is conducive to the fire transfer channel 4 to transfer the inner ring fire to the outer ring fire cover.

[0033] Furthermore, the ignition grooves 121 on the groove walls on both sides of the through groove 12 are connected to the outer ring fire transfer groove 122 through the first auxiliary fire transfer grooves 123. By providing the first auxiliary fire transfer grooves 123, the flames in the ignition grooves 121 and the outer ring fire transfer grooves 122 can burn stably (mainly by reducing the air flow speed), and can play a role in fire transfer between the ignition grooves 121 and the outer ring fire transfer grooves 122. The first auxiliary fire transfer groove 123 can be implemented in a variety of specific ways, one of which is a preferred implementation: the ignition groove 121 and the outer ring fire transfer groove 122 both penetrate the top of the groove wall of the through groove 12 where they are located, and at least one of the bottom of the groove wall of the main fire transfer groove 24 or the top of the groove wall of the through groove 12 is provided with a second groove 123a extending along the length direction of the corresponding groove wall, and when the main fire transfer groove 24 is covered on the through groove 12, the second groove 123a is combined with the corresponding main fire transfer groove 24 or the groove wall of the through groove 12 to form the first auxiliary fire transfer groove 123. In this embodiment, the second groove 123a is provided at the top of the groove wall of the through groove 12.

[0034] In addition, second auxiliary fire transfer grooves 25 are respectively provided on the groove walls on both sides of the main fire transfer groove 24. Each second auxiliary fire transfer groove 25 penetrates from the groove wall where it is located to the channel of the main fire hole 20 adjacent to the groove wall, and penetrates the groove wall to the outer ring wall 23 corresponding to the main fire hole 20. The flames in the fire transfer channel 4 can be respectively transferred to the main fire holes 20 on both sides of the main fire transfer groove 24 through the second auxiliary fire transfer grooves 25.

Claims

1. A gas burner with stable flame transmission, comprising an air mixing chamber (1), an outer ring fire cover having an annular outer ring fire cover body (2), and an inner ring fire cover, wherein the top of the air mixing chamber (1) is provided with an inner ring air mixing cavity (15) and an outer ring air mixing cavity (13) which are open upwards in sequence from the inside to the outside, the inner ring fire cover and the outer ring fire cover are respectively covered on the inner ring air mixing cavity (15) and the outer ring air mixing cavity (13), a secondary air annular channel (14) is provided between the inner ring air mixing cavity (15) and the outer ring air mixing cavity (13), and a secondary air supply channel (11) which is communicated with the secondary air annular channel (14) is provided on the side wall of the air mixing chamber (1), characterized in that: A main fire transfer groove (24) extending radially is provided at the bottom of the outer ring fire cover body (2), and a partial upper wall of the secondary air supply channel (11) corresponding to the main fire transfer groove (24) penetrates upward to form a through groove (12), and the main fire transfer groove (24) is covered on the top of the through groove (12) to form a fire transfer channel (4); An ignition groove (121) communicating with the outer ring gas mixing chamber (13) is provided on at least one side of the groove wall of the through groove (12), and the ignition groove (121) extends horizontally and is inclined from the outer ring gas mixing chamber (13) side to the inner ring fire cover side relative to the groove wall of the through groove (12); An outer ring fire transfer groove (122) communicating with the outer ring gas mixing chamber (13) is provided on at least one side of the groove wall of the through groove (12). The outer ring fire transfer groove (122) extends horizontally and is inclined from the outer ring gas mixing chamber (13) side to the outer side of the gas mixing chamber (1) relative to the groove wall of the through groove (12) where it is located; The above-mentioned ignition groove (121) and the outer ring fire transfer groove (122) are simultaneously provided on at least one side groove wall of the through groove (12), and the ignition groove (121) and the outer ring fire transfer groove (122) are connected through a first auxiliary fire transfer groove (123); The main fire transfer groove (24) matches the through groove (12), the ignition groove (121) and the outer ring fire transfer groove (122) both penetrate the top of the groove wall of the through groove (12) where they are located, and a second groove (123a) extending along the length direction of the corresponding groove wall is provided at at least one of the bottom of the groove wall of the main fire transfer groove (24) or the top of the groove wall of the through groove (12). When the main fire transfer groove (24) is covered on the through groove (12), the second groove (123a) is combined with the groove wall of the corresponding main fire transfer groove (24) or the through groove (12) to form the above-mentioned first auxiliary fire transfer groove (123); The through groove (12) is formed by penetrating upwards through the middle upper wall of the secondary air supply channel (11) where it is located.

2. The gas burner according to claim 1, characterized in that: The inner ring fire cover comprises a cylindrical inner ring fire cover body (31), and an inner ring fire transfer hole (311) is provided on the side wall of the inner ring fire cover body (31), and the inner ring fire transfer hole (311) is opposite to the above-mentioned fire transfer channel (4).

3. The gas burner according to claim 2, characterized in that: The hole channel of the inner ring fire transmission hole (311) extends horizontally.

4. The gas burner according to claim 2 or 3, characterized in that: The top of the inner ring fire cover body (31) is sealed with an end cover (32), and the side edge of the end cover (32) corresponding to the inner ring fire transfer hole (311) extends horizontally outward to form a fire transfer shielding eave (321).

5. The gas burner according to claim 1, 2 or 3, characterized in that: A second auxiliary fire transfer groove (25) is provided on at least one side groove wall of the main fire transfer groove (24), which is in communication with at least one main fire hole (20) and penetrates the corresponding position of the outer side wall of the outer ring fire cover body (2).

6. The gas burner according to claim 1, 2 or 3, characterized in that: The outer side wall of the outer ring fire cover body (2) extends outwardly in the circumferential direction to form a liquid blocking ring edge (26), and the outer side end of the main fire transfer groove (24) is located on the inner side of the liquid blocking ring edge (26).

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