A splitter and burner

Abstract

This utility model discloses a flame distributor and a burner. The flame distributor includes a flame distributor body, a frying fire ejector and an outer ring fire ejector disposed on the lower side of the flame distributor body, a frying fire exhaust channel and an outer ring fire exhaust channel located outside the frying fire exhaust channel on the upper side of the flame distributor body, the exhaust end of the frying fire ejector communicating with the frying fire exhaust channel, the exhaust end of the outer ring fire ejector communicating with the outer ring fire exhaust channel, and the central axis of the frying fire ejector being offset from the central axis of the frying fire exhaust channel by a distance L1, where L1 > 0 mm. This utility model proposes a flame distributor and a burner that achieves high uniformity of air-fuel mixture, thereby improving the primary air coefficient, increasing combustion efficiency, and reducing the CO content in the flue gas produced by combustion.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a flame distributor and burner. Background Technology

[0002] Existing top-intake burners typically have nozzles externally mounted on the cooktop surface, with the ejector hidden under the burner's flame distributor. The ejector's structure is limited, preventing it from being too long, resulting in a lower primary air coefficient and making it easy for CO content in the flue gas to exceed the standard.

[0003] Therefore, there is an urgent need for a flame spreader to solve the above problems. Utility Model Content

[0004] This utility model aims to at least partially solve one of the problems existing in the prior art. To this end, this utility model proposes a flame spreader and burner, which has a high degree of uniformity in the mixing between air and fuel gas, thereby improving the primary air coefficient, improving combustion efficiency, and reducing the CO content in the flue gas produced by combustion.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A flame distributor includes a flame distributor body, a frying fire ejector and an outer ring fire ejector disposed on the lower side of the flame distributor body, a frying fire exhaust channel and an outer ring fire exhaust channel located outside the frying fire exhaust channel disposed on the upper side of the flame distributor body, the exhaust end of the frying fire ejector is connected to the frying fire exhaust channel, the exhaust end of the outer ring fire ejector is connected to the outer ring fire exhaust channel, and the central axis of the frying fire ejector is offset from the central axis of the frying fire exhaust channel by a distance L1, where L1 > 0 mm.

[0007] Optionally, 4mm≤L1≤6mm.

[0008] Optionally, the flame distributor body is further provided with a guide vane located in the gas outlet channel of the stir-fry fire, and the guide vane is located in front of the gas flow direction of the stir-fry fire ejector.

[0009] Optionally, the central axis of the stir-fry flame ejector is located to the right of the central axis of the stir-fry flame exhaust channel, the left end of the guide vane is flush with or protrudes to the left of the stir-fry flame ejector, and the right end of the guide vane is connected to the inner wall of the stir-fry flame exhaust channel.

[0010] Optionally, the ejector channel of the stir-fry ejector is projected onto the guide plate in the direction of airflow.

[0011] Optionally, the end face of the guide vane facing the stir-fry flame ejector is an arc-shaped surface, and the center of the guide vane is offset from the left side of the central axis of the stir-fry flame outlet channel by a distance L3, where 5mm≤L3≤7mm.

[0012] Optionally, the central axis of the outer ring fire ejector and the central axis of the stir-fry fire ejector are spaced apart by L2, where 25mm≤L2≤35mm.

[0013] Optionally, the air inlet of the outer ring flame ejector is provided with a baffle plate, which extends in the direction away from the air outlet of the outer ring flame ejector and is located on the side close to the stir-fry flame ejector.

[0014] Optionally, the baffle plate extends downward from the upper end of the air inlet of the outer ring ejector to at least the middle of the air inlet of the outer ring ejector.

[0015] Optionally, the burner body is further provided with a middle ring flame ejector and a middle ring flame outlet channel. The middle ring flame outlet channel is located between the stir-fry flame outlet channel and the outer ring flame outlet channel. The stir-fry flame ejector is located between the outer ring flame ejector and the middle ring flame ejector. The outlet end of the middle ring flame ejector is connected to the middle ring flame outlet channel. The outer ring flame ejector and the stir-fry flame ejector are both arranged along a first direction. The middle ring flame ejector is arranged along a second direction, and the second direction has an angle β with the first direction. The inlet ends of the middle ring flame ejector, the outer ring flame ejector, and the stir-fry flame ejector are all located on the same side of the burner body, with 15°≤β≤30°.

[0016] Optionally, the air inlet ends of the outer ring fire ejector, the middle ring fire ejector, and the stir-fry fire ejector are staggered along the first direction.

[0017] In another aspect, this utility model provides a burner, including an inner burner cap, an outer burner cap, a base, and the aforementioned flame distributor. The flame distributor is mounted on the base. The inner burner cap includes an inner burner cap body, a frying flame hole formed in the middle of the inner burner cap body, and a central ring flame hole formed around the inner burner cap body. The inner burner cap covers the upper side of the frying flame outlet channel and the central ring flame outlet channel, forming a frying gas channel with the frying flame outlet channel and a central ring gas channel with the central ring flame outlet channel. The frying gas channel communicates with the frying flame hole, and the central ring gas channel communicates with the central ring flame outlet channel. The outer flame cover includes an outer flame cover body and an outer flame hole disposed on the outer flame cover body. The outer flame cover body covers the upper side of the outer ring flame outlet channel to form an outer ring gas channel with the outer ring flame outlet channel. The outer ring gas channel is connected to the outer flame hole. The base includes a base body and a stir-fry gas nozzle, a middle ring gas nozzle and an outer ring gas nozzle installed on the base body. The stir-fry gas nozzle is aligned with the air inlet end of the stir-fry flame ejector. The middle ring gas nozzle is aligned with the air inlet end of the middle ring flame ejector. The outer ring gas nozzle is aligned with the air inlet end of the outer ring flame ejector.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] This utility model provides a flame distributor including a flame distributor body, a flaming ejector and an outer ring flame ejector disposed on the lower side of the flame distributor body, a flaming exhaust channel and an outer ring flame exhaust channel located outside the flaming exhaust channel on the upper side of the flame distributor body, the exhaust end of the flaming ejector and the exhaust end of the outer ring flame ejector being connected to the flaming exhaust channel, the central axis of the flaming ejector being offset from the central axis of the flaming exhaust channel by a distance L1, where L1 > 0 mm. This allows the air and fuel gas mixture ejected through the flaming ejector to form a spiral airflow in the flaming exhaust channel, further improving the mixing uniformity between air and fuel, increasing the primary air coefficient, thereby improving combustion efficiency and reducing the CO content in the flue gas produced by combustion. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the burner provided in a specific embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 Top view;

[0022] Figure 3 yes Figure 2 Sectional view at point AA;

[0023] Figure 4 yes Figure 1 Exploded view;

[0024] Figure 5 This is a bottom view of the fire distributor provided in a specific embodiment of this utility model;

[0025] Figure 6 This is a top view of the fire distributor provided in a specific embodiment of this utility model;

[0026] Figure 7 This is a side view of the fire distributor provided in a specific embodiment of this utility model.

[0027] In the picture:

[0028] 1. Flame distributor; 11. Flame distributor body; 12. Stir-fry flame ejector; 13. Middle ring flame ejector; 14. Outer ring flame ejector; 141. Baffle plate; 15. Flow guide plate;

[0029] 2. Outer flame cap; 21. Outer flame cap body; 22. Outer flame hole;

[0030] 3. Inner burner cap; 32. Middle ring burner hole; 33. Stir-fry burner hole;

[0031] 4. Base; 41. Base body; 42. Stir-fry gas nozzle; 43. Middle ring gas nozzle; 44. Outer ring gas nozzle;

[0032] 101. Stir-fry flame exhaust channel; 102. Middle ring flame exhaust channel; 103. Outer ring flame exhaust channel;

[0033] 201. Gas passage for stir-frying; 202. Gas passage for the middle ring; 203. Gas passage for the outer ring. Detailed Implementation

[0034] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0035] Please refer to Figures 1-7This invention provides a flame distributor, including a flame distributor body 11. A flaming ejector 12 and an outer ring flame ejector 14 are disposed on the lower side of the flame distributor body 11. A flaming exhaust channel 101 and an outer ring flame exhaust channel 103 located outside the flaming exhaust channel 101 are disposed on the upper side of the flame distributor body 11. The exhaust end of the flaming ejector 12 is connected to the flaming exhaust channel 101, and the exhaust end of the outer ring flame ejector 14 is connected to the outer ring flame exhaust channel 103. The central axis of the flaming ejector 12 is offset from the central axis of the flaming exhaust channel 101 by a distance L1 > 0 mm. This allows the air and fuel gas mixture ejected through the flaming ejector 12 to form a spiral airflow in the flaming exhaust channel 101, further improving the mixing uniformity between air and fuel, increasing the primary air coefficient, thereby improving combustion efficiency and reducing the CO content in the flue gas produced by combustion.

[0036] Optionally, 4mm ≤ L1 ≤ 6mm, so that the air and fuel mixture can achieve a better spiral airflow effect while ensuring the miniaturization of the structure. For example, in this embodiment, L1 is 5mm.

[0037] Because the flame ejector 12 creates a spiral airflow through the flame outlet channel 101, the spiral airflow, due to its tangential velocity, exhibits a high velocity on the outer side and a low velocity in the middle, leading to uneven flame distribution. Therefore, in this embodiment, optionally, a guide vane 15 is provided on the flame distributor body 11 within the flame outlet channel 101, positioned in front of the flame ejector 12's airflow direction. By providing the guide vane 15, the spiral airflow impacts the guide vane 15, reducing the spiral airflow rate and homogenizing the airflow velocity. Furthermore, the impact of the spiral airflow on the guide vane 15 allows for further mixing of the fuel and air. Thus, while reducing the uneven velocity generated by the spiral airflow, it also ensures uniform mixing between primary air and fuel, improving the primary air coefficient and ultimately guaranteeing uniform combustion of the flame.

[0038] Optionally, the central axis of the stir-fry ejector 12 is located to the right of the central axis of the stir-fry exhaust channel 101. The left end of the guide vane 15 is flush with or protrudes to the left of the stir-fry ejector 12. The right end of the guide vane 15 is connected to the inner wall of the stir-fry exhaust channel 101, so that the air-gas mixture can be completely blocked by the guide vane 15 and the inner wall of the stir-fry exhaust channel 101 to generate an impact airflow, further mixing the gas and air.

[0039] Optionally, the ejector channel of the stir-fry ejector 12 is projected onto the guide vane 15 along the airflow direction, so that the air and gas mixture ejected from the stir-fry ejector 12 can completely hit the guide vane 15, thus achieving a better uniform airflow speed.

[0040] Optionally, the end face of the guide vane 15 facing the frying fire ejector 12 is an arc-shaped surface. The center of the guide vane 15 is offset from the left side of the central axis of the frying fire outlet channel 101 by a distance L3, 5mm≤L3≤7mm, so that the air and gas mixture ejected from the frying fire ejector 12 can flow smoothly along the guide vane 15, thereby preventing the flow velocity of the gas mixture from decreasing too much, thus ensuring that the gas mixture can be mixed with more primary air.

[0041] Optionally, the distance L2 between the central axis of the outer ring flame ejector 14 and the central axis of the frying flame ejector 12 is set to 25mm≤L2≤35mm, so as to ensure that there is a sufficient distance between the outer ring flame ejector 14 and the frying flame ejector 12, thereby reducing the mutual influence between the mixed gas entering the outer ring flame ejector 14 and the mixed gas entering the frying flame ejector 12.

[0042] Optionally, the air inlet of the outer ring flame ejector 14 is provided with a baffle plate 141. The baffle plate 141 extends toward the air outlet of the outer ring flame ejector 14 and is located on the side close to the frying flame ejector 12. By providing the baffle plate 141, the mixed gas entering the outer ring flame ejector 14 is further blocked from the mixed gas entering the frying flame ejector 12, thereby further reducing the mutual influence between the mixed gas entering the outer ring flame ejector 14 and the mixed gas entering the frying flame ejector 12.

[0043] Optionally, the baffle plate 141 extends downward from the upper end of the air inlet of the outer ring ejector 14 to at least the middle of the air inlet of the outer ring ejector 14 to improve the baffle effect.

[0044] Optionally, the burner body 11 is further provided with a central ring flame ejector 13 and a central ring flame exhaust channel 102. The central ring flame exhaust channel 102 is located between the stir-fry flame exhaust channel 101 and the outer ring flame exhaust channel 103. The stir-fry flame ejector 12 is located between the outer ring flame ejector 14 and the central ring flame ejector 13. The exhaust end of the central ring flame ejector 13 is connected to the central ring flame exhaust channel 102. The outer ring flame ejector 14 and the stir-fry flame ejector 12 are both arranged along a first direction, and the central ring flame ejector 13 is arranged along a second direction, with an angle β between the second direction and the first direction. The air inlet end of the central ring flame ejector 13 and the outer ring flame ejector 12 are also provided. The air inlet ends of the burner 14 and the ignition ejector 12 are both located on the same side of the burner body 11. This allows the ignition gas nozzle 42, the middle ring gas nozzle 43, and the outer ring gas nozzle 44 of the burner to be installed on the same side, facilitating the centralized arrangement of gas pipelines and reducing the space occupied by gas pipelines, thus promoting product miniaturization. Simultaneously, by setting an angle between the first and second directions, the distance between the air inlet ends of the ignition ejector and the middle ring ejector 13 is increased, reducing the mutual influence between the mixed gas entering the middle ring ejector 13 and the mixed gas entering the ignition ejector 12. The angle is 15°≤β≤30°, ensuring a sufficiently large distance between the air inlet ends of the ignition ejector and the middle ring ejector 13, and concentrating the air inlet ends of the ignition ejector 11 and the middle ring ejector 13 on the same side of the burner body 11, facilitating the relatively centralized arrangement of gas pipelines.

[0045] Optionally, the air inlet ends of the outer ring flame ejector 14, the middle ring flame ejector 13, and the stir-fry flame ejector 12 are staggered along the first direction to further increase the distance between any two of the air inlet ends of the outer ring flame ejector 14, the middle ring flame ejector 13, and the stir-fry flame ejector 12, thereby further reducing the mutual influence between the ejected gases.

[0046] In another aspect, this utility model provides a burner, including an inner burner cap 3, an outer burner cap 2, a base 4, and the aforementioned flame distributor 1. The flame distributor 1 is mounted on the base 4. The inner burner cap 3 includes an inner burner cap body 31, a flaming hole 33 opened in the middle of the inner burner cap body 31, and a central ring flame hole 32 opened around the inner burner cap body 31. The inner burner cap 3 covers the upper side of the flaming gas outlet channel 101 and the central ring flame outlet channel 102, so as to form a flaming gas channel 201 between the inner burner cap 301 and a central ring gas channel 202 between the inner burner cap 301 and the central ring flame outlet channel 102. The flaming gas channel 201 communicates with the flaming hole 33, and the central ring gas channel 202 communicates with the central ring flame outlet channel 102. The outer flame cover 2 includes an outer flame cover body 21 and an outer flame hole 22 provided on the outer flame cover body 21. The outer flame cover body 21 covers the upper side of the outer ring flame outlet channel 103 to form an outer ring gas channel 203 between it and the outer ring flame outlet channel 103. The outer ring gas channel 203 is connected to the outer flame hole 22. The base 4 includes a base body 41 and a stir-fry gas nozzle 42, a middle ring gas nozzle 43 and an outer ring gas nozzle 44 installed on the base body 41. The stir-fry gas nozzle 42 is aligned with the air inlet end of the stir-fry flame ejector 12, the middle ring gas nozzle 43 is aligned with the air inlet end of the middle ring flame ejector 13, and the outer ring gas nozzle 44 is aligned with the air inlet end of the outer ring flame ejector 14.

[0047] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A flame spreader, characterized in that, The device includes a flame distributor body (11), on the lower side of which a frying fire ejector (12) and an outer ring fire ejector (14) are provided. On the upper side of the flame distributor body (11) are a frying fire exhaust channel (101) and an outer ring fire exhaust channel (103) located outside the frying fire exhaust channel (101). The exhaust end of the frying fire ejector (12) is connected to the frying fire exhaust channel (101), and the exhaust end of the outer ring fire ejector (14) is connected to the outer ring fire exhaust channel (103). The central axis of the frying fire ejector (12) is offset from the central axis of the frying fire exhaust channel (101) by a distance L1, where L1 > 0 mm.

2. The fire distributor according to claim 1, characterized in that, 4mm≤L1≤6mm.

3. The flame distributor according to claim 1, characterized in that, The flame distributor body (11) is also provided with a guide vane (15) located in the frying fire exhaust channel (101), and the guide vane (15) is located in front of the airflow direction of the frying fire ejector (12).

4. The fire distributor according to claim 3, characterized in that, The central axis of the stir-fry ejector (12) is located to the right of the central axis of the stir-fry exhaust channel (101). The left end of the guide vane (15) is level with or protrudes to the left of the left end of the stir-fry ejector (12). The right end of the guide vane (15) is connected to the inner wall of the stir-fry exhaust channel (101).

5. The fire distributor according to claim 4, characterized in that, The ejection channel of the stir-fry ejector (12) is projected onto the guide plate (15) in the direction of airflow.

6. The fire distributor according to claim 4, characterized in that, The end face of the guide plate (15) facing the stir-fry fire ejector (12) is an arc-shaped surface. The center of the guide plate (15) is offset from the left side of the central axis of the stir-fry fire exhaust channel (101) by a distance L3, 5mm≤L3≤7mm.

7. The fire distributor according to claim 1, characterized in that, The central axis of the outer ring fire ejector (14) is spaced L2 apart from the central axis of the stir-fry fire ejector (12), where 25mm≤L2≤35mm.

8. The fire distributor according to claim 1, characterized in that, The air inlet of the outer ring flame ejector (14) is provided with a baffle plate (141), which extends toward the air outlet of the outer ring flame ejector (14) and is located on the side close to the stir-fry flame ejector (12).

9. The fire distributor according to claim 8, characterized in that, The baffle plate (141) extends downward from the upper end of the air inlet end of the outer ring ejector (14) to at least the middle of the air inlet end of the outer ring ejector (14).

10. The fire distributor according to any one of claims 1-9, characterized in that, The burner body (11) is also provided with a middle ring flame ejector (13) and a middle ring flame outlet channel (102). The middle ring flame outlet channel (102) is located between the stir-fry flame outlet channel (101) and the outer ring flame outlet channel (103). The stir-fry flame ejector (12) is located between the outer ring flame ejector (14) and the middle ring flame ejector (13). The outlet end of the middle ring flame ejector (13) is connected to the middle ring flame outlet channel (103). 2) Connected, the outer ring fire ejector (14) and the stir-fry fire ejector (12) are both arranged along the first direction, the middle ring fire ejector (13) is arranged along the second direction, and the second direction and the first direction have an angle β. The air inlet of the middle ring fire ejector (13), the air inlet of the outer ring fire ejector (14) and the air inlet of the stir-fry fire ejector (12) are all located on the same side of the fire distributor body (11), 15°≤β≤30°.

11. The fire distributor according to claim 10, characterized in that, The air inlet of the outer ring fire ejector (14), the air inlet of the middle ring fire ejector (13), and the air inlet of the stir-fry fire ejector (12) are staggered along the first direction.

12. A burner, characterized in that, The device includes an inner burner cap (3), an outer burner cap (2), a base (4), and a flame distributor (1) as described in any one of claims 1-11. The flame distributor (1) is mounted on the base (4). The inner burner cap (3) includes an inner burner cap body (31), a frying flame hole (33) opened in the middle of the inner burner cap body (31), and a central ring flame hole (32) opened around the inner burner cap body (31). The inner burner cap (3) covers the upper side of the frying flame outlet channel (101) and the central ring flame outlet channel (102) to form a frying gas channel (201) between the inner burner cap (31) and the central ring flame outlet channel (102), and forms a central ring gas channel (202) between the inner burner cap (31) and the central ring flame outlet channel (102). The frying gas channel (201) communicates with the frying flame hole (33), and the central ring gas channel (202) communicates with the central ring flame hole (32). The outer flame cap (2) includes an outer flame cap body (21) and an outer flame hole (22) disposed on the outer flame cap body (21). The outer flame cap body (21) covers the upper side of the outer ring flame outlet channel (103) to form an outer ring gas channel (203) between the outer ring flame outlet channel (103) and the outer ring gas channel (203). The outer ring gas channel (203) is connected to the outer flame hole (22). The base (4) includes a base body (41) and a stir-fry gas nozzle (42), a middle ring gas nozzle (43) and an outer ring gas nozzle (44) installed on the base body (41). The stir-fry gas nozzle (42) is aligned with the air inlet end of the stir-fry flame ejector (12). The middle ring gas nozzle (43) is aligned with the air inlet end of the middle ring flame ejector (13). The outer ring gas nozzle (44) is aligned with the air inlet end of the outer ring flame ejector (14).

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