A flow guide and heat shield for a burner and a burner

Abstract

The utility model discloses a kind of flow guide heat insulation plate of combustor and combustor, the flow guide heat insulation plate of combustor, including bottom plate, the bottom plate is sequentially opened with avoiding hole, flow guide hole from inside to outside, the bottom plate is also provided with flow guide flanging, the flow guide hole and the flow guide flanging are sequentially provided with multiple along the circumferential direction of the bottom plate, the flow guide hole is sequentially provided along the radial direction of the bottom plate, multiple flow guide holes and multiple flow guide flanging are one-to-one corresponding arrangement, the flow guide flanging is arranged in the first side of the flow guide hole and from below to above to the direction of the second side of the flow guide hole close to the flow guide hole Inclined arrangement, the first side of the flow guide hole and the second side of the flow guide hole are sequentially provided along the radial direction of the bottom plate.The utility model proposes a kind of flow guide heat insulation plate of combustor, can improve the mixing uniformity of gas, air, improve the combustion efficiency of combustor, also can realize better heat insulation effect, improve the thermal efficiency of combustor.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a heat-insulating plate for a burner and a burner. Background Technology

[0002] For an infrared burner to have a primary air coefficient ≥1, it is necessary to have a sufficient amount of air mixed with the gas, and for the gas and air to be mixed sufficiently evenly inside the burner. If the gas and air are not mixed evenly, the gas combustion will be incomplete, resulting in low thermal efficiency and high CO emissions.

[0003] In addition, the temperature of the burner body in an infrared burner is close to 1000℃ or even higher. A lot of heat is transferred downwards from the burner body, which can cause the temperature of the lower part of the burner to be too high. This can lead to excessively high temperatures inside the bottom shell of the stove, causing damage to the electronic components located inside the bottom shell of the stove at high temperatures and affecting their lifespan.

[0004] Therefore, there is an urgent need for a heat-insulating plate for burners to solve the above problems. Utility Model Content

[0005] 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 flow-guiding heat insulation plate for a burner, which can improve the uniformity of mixing of gas and air, improve the combustion efficiency of the burner, and also achieve better heat insulation, thereby improving the thermal efficiency of the burner.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A flow-guiding heat insulation plate for a burner includes a base plate. From the inside out, the base plate has clearance holes and flow-guiding holes sequentially formed. The base plate also has flow-guiding flanges. Multiple flow-guiding holes and flow-guiding flanges are sequentially arranged along the circumference of the base plate. The flow-guiding holes extend radially along the base plate. Each flow-guiding hole corresponds to one flow-guiding flange. The flow-guiding flange is located on a first side of the flow-guiding hole and is inclined from bottom to top towards a second side closer to the flow-guiding hole. Both the first and second sides of the flow-guiding hole extend radially along the base plate.

[0008] Optionally, it also includes a side plate, which is disposed on the periphery of the base plate and extends upward.

[0009] Optionally, the side panel includes a side panel body and a side panel flange. The lower end of the side panel body is connected to the periphery of the bottom plate and extends upward. The upper side of the side panel body is connected to the side panel flange, and the side panel flange extends outward.

[0010] Optionally, the side plate flange is inclined upwards from the inside to the outside.

[0011] In another aspect, this utility model provides a burner, including an ejector tube assembly, a burner head, an infrared combustion plate, and a flow-guiding heat insulation plate for the burner. The ejector tube assembly includes an outer ejector tube and an inner ejector tube. The burner head is provided with an inner mixing chamber and an outer mixing chamber from the inside to the outside. One end of the inner ejector tube is connected to a gas supply pipe outside the burner, and the other end is connected to the inner mixing chamber inside the burner head. The infrared combustion plate is installed on the burner head and covers the upper side of the outer mixing chamber and the inner mixing chamber. The flow-guiding heat insulation plate is sleeved on the outside of the inner mixing chamber through the clearance hole and is located in the middle of the outer mixing chamber to divide the outer mixing chamber into an upper mixing chamber and a lower mixing chamber. One end of the outer ejector tube is connected to a gas supply pipe outside the burner, and the other end is connected to the lower mixing chamber.

[0012] Optionally, the burner head includes a burner head body and a surrounding plate structure disposed on the upper part of the burner head body. The infrared combustion plate is disposed on the upper side of the surrounding plate structure, and the surrounding plate structure is disposed on the outer side of the side plate and spaced apart from the side plate to form a heat insulation cavity.

[0013] Optionally, the enclosure structure includes a first partition and a second partition that are connected to each other. The first partition extends horizontally, and the second partition extends vertically and is disposed outside the first partition. The side plate body of the side plate is located inside the second partition and is spaced apart from the second partition. The side plate flange of the side plate is located above the first partition and is spaced apart from the first partition. The first partition, the second partition, the side plate body, and the side plate flange enclose and form the heat insulation cavity.

[0014] Optionally, the upper mixing chamber includes an upper mixing chamber body and an air guiding chamber that are interconnected. The upper mixing chamber body is disposed above the bottom plate, and the air guiding chamber is disposed above the side plate flange.

[0015] Optionally, the burner head also includes a secondary air passage disposed inside the internal mixing chamber.

[0016] Optionally, it also includes an ignition needle disposed in the secondary air channel and extending above the infrared combustion plate.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The heat-insulating plate for the burner provided in this application can improve the uniformity of the mixing of gas and air, improve the combustion efficiency of the burner, and also achieve better heat insulation, thereby improving the thermal efficiency of the burner. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the heat-insulating plate of the burner provided in a specific embodiment of the present utility model;

[0020] Figure 2 yes Figure 1 Top view;

[0021] Figure 3 yes Figure 2 Sectional view at point AA;

[0022] Figure 4 This is a three-dimensional structural schematic diagram of the burner provided in a specific embodiment of the present utility model;

[0023] Figure 5 yes Figure 4 The main view;

[0024] Figure 6 yes Figure 5 Sectional view at point BB;

[0025] Figure 7 yes Figure 4 The exploded diagram.

[0026] In the picture:

[0027] 1. Flow guiding heat insulation plate; 11. Base plate; 111. Flow guiding hole; 112. Flow guiding flange; 12. Side plate; 121. Side plate body; 122. Side plate flange;

[0028] 2. Infrared combustion plate;

[0029] 3. Burner head; 31. Burner head body; 32. Enclosure structure; 321. First partition section; 322. Second partition section;

[0030] 4. Ejector assembly; 41. External ejector; 42. Internal ejector;

[0031] 5. Ignition needle;

[0032] 100. Circumvention hole; 200. External mixing chamber; 201. Upper mixing chamber; 2011. Upper mixing chamber body; 2012. Air guide chamber; 202. Lower mixing chamber; 300. Internal mixing chamber; 400. Heat insulation cavity; 500. Secondary air passage. Detailed Implementation

[0033] 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.

[0034] Please refer to Figures 1-7 This utility model provides a flow guiding and heat insulation plate for a burner, including a base plate 11. The base plate 11 has a clearance hole 100 and a flow guiding hole 111 sequentially formed from the inside to the outside. The base plate 11 is also provided with a flow guiding flange 112. Multiple flow guiding holes 111 and multiple flow guiding flanges 112 are sequentially arranged along the circumference of the base plate 11. The flow guiding holes 111 extend radially along the base plate 11. Multiple flow guiding holes 111 and multiple flow guiding flanges 112 are arranged one-to-one. The flow guiding flanges 112 are arranged on the first side of the flow guiding holes 111 and are inclined from bottom to top toward the second side of the flow guiding holes 111. Both the first side and the second side of the flow guiding holes 111 extend radially along the base plate 11.

[0035] In practical applications, the flow-guiding heat insulation plate 1 is installed in the middle of the outer mixing chamber 200 of the burner to divide the outer mixing chamber 200 into an upper mixing chamber 201 and a lower mixing chamber 202. On the one hand, the gas achieves the first mixing of air and gas in the outer injector 41, and the second mixing of air and gas in the lower mixing chamber 202. Then, these mixed gases flow out through the guide hole 111 to the upper mixing chamber 201 under the guidance of the flow-guiding flange 112. Since the flow-guiding flange 112 is inclined from bottom to top, it can guide the mixed gas to flow along the circumference of the bottom plate 11 in the upper mixing chamber 201, thereby achieving the third mixing of air and gas, thereby improving the uniformity of gas and air mixing and improving combustion efficiency. On the other hand, by setting the base plate 11, the heat generated by the infrared combustion plate 2 set above the base plate 11 during combustion can be blocked by the base plate 11, reducing the heat transfer to the inside of the stove bottom shell located at the bottom of the burner, thus protecting the electronic components inside the stove bottom shell, and keeping the heat as close as possible to the infrared combustion plate 2, thereby improving the thermal efficiency of the burner.

[0036] Therefore, the heat-insulating plate 1 of the burner provided in this application can improve the uniformity of the mixing of gas and air, improve the combustion efficiency of the burner, and also achieve a better heat insulation effect, thereby improving the thermal efficiency of the burner.

[0037] Optionally, it also includes a side plate 12, which is disposed on the periphery of the base plate 11 and extends upward. By providing the side plate 12, heat can be blocked in the periphery direction, reducing heat dissipation to the periphery of the burner and improving thermal efficiency.

[0038] Optionally, the side panel 12 includes a side panel body 121 and a side panel flange 122. The lower end of the side panel body 121 is connected to the periphery of the bottom plate 11 and extends upward. The upper side of the side panel body 121 is connected to the side panel flange 122, and the side panel flange 122 extends outward.

[0039] Optionally, the side panel flange 122 is inclined upwards from the inside to the outside.

[0040] Another aspect of this utility model provides a burner, including an ejector tube assembly 4, a burner head 3, an infrared combustion plate 2, and a flow-guiding heat insulation plate 1 of the burner. The ejector tube assembly 4 includes an outer ejector tube 41 and an inner ejector tube 42. The burner head 3 is provided with an inner mixing chamber 300 and an outer mixing chamber 200 from the inside to the outside. One end of the inner ejector tube 42 is connected to the gas supply pipe outside the burner, and the other end is connected to the inner mixing chamber 300 inside the burner head 3. The infrared combustion plate 2 is installed on the burner head 3 and covers the upper side of the outer mixing chamber 200 and the inner mixing chamber 300. The flow-guiding heat insulation plate 1 is sleeved on the outside of the inner mixing chamber 300 through the avoidance hole 100 and is located in the middle of the outer mixing chamber 200 to divide the outer mixing chamber 200 into an upper mixing chamber 201 and a lower mixing chamber 202. One end of the outer ejector tube 41 is connected to the gas supply pipe outside the burner, and the other end is connected to the lower mixing chamber 202.

[0041] Optionally, the burner head 3 includes a burner head body 31 and a surrounding plate structure 32 disposed on the upper part of the burner head body 31. The infrared combustion plate 2 is disposed on the upper side of the surrounding plate structure 32. The surrounding plate structure 32 is disposed on the outer side of the side plate 12 and spaced apart from the side plate 12 to form a heat insulation cavity 400, so as to further improve the heat insulation effect on the periphery of the burner.

[0042] Optionally, the enclosure structure 32 includes a first partition 321 and a second partition 322 connected to each other. The first partition 321 extends horizontally, and the second partition 322 extends vertically outside the first partition 321. The side plate body 121 of the side plate 12 is located inside the second partition 322 and is spaced apart from the second partition 322. The side plate flange 122 of the side plate 12 is located above the first partition 321 and is spaced apart from the first partition 321. The first partition 321, the second partition 322, the side plate body 121, and the side plate flange 122 enclose and form a heat insulation cavity 400. The structure is simple and compact and easy to install.

[0043] Optionally, the upper mixing chamber 201 includes an upper mixing chamber body 2011 and an air guide chamber 2012 that are interconnected. The upper mixing chamber body 2011 is disposed above the base plate 11, and the air guide chamber 2012 is disposed above the side plate flange 122. The mixture of fuel gas and air flows through the upper mixing chamber body 2011 to the air guide chamber 2012, thereby providing fuel gas to the portion of the infrared combustion plate 2 located on the upper side of the air guide chamber 2012.

[0044] Because the side plate flange 122 is inclined upward from the inside to the outside, it further guides the gas so that the gas can flow smoothly to the gas guide chamber 2012 and then enter the bottom flame hole of the infrared burner.

[0045] Optionally, the burner head 3 also includes a secondary air passage 500 disposed inside the internal mixing chamber 300 to provide secondary air to the burner, thereby improving combustion efficiency.

[0046] Optionally, it also includes an ignition needle 5, which is disposed in the secondary air channel 500 and extends above the infrared combustion plate 2, thereby igniting the burner.

[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 flow-guiding heat insulation plate for a burner, characterized in that, The system includes a base plate (11), on which clearance holes (100) and flow guide holes (111) are sequentially provided from the inside to the outside. The base plate (11) is also provided with flow guide flanges (112). Multiple flow guide holes (111) and multiple flow guide flanges (112) are sequentially provided along the circumference of the base plate (11). The flow guide holes (111) extend radially along the base plate (11). Multiple flow guide holes (111) are provided in one-to-one correspondence with multiple flow guide flanges (112). The flow guide flanges (112) are provided on the first side of the flow guide holes (111) and are inclined from bottom to top toward the second side of the flow guide holes (111). Both the first side of the flow guide holes (111) and the second side of the flow guide holes (111) extend radially along the base plate (11).

2. The heat-insulating plate for the burner according to claim 1, characterized in that, It also includes a side plate (12), which is disposed on the periphery of the base plate (11) and extends upward.

3. The flow-guiding heat insulation plate of the burner according to claim 2, characterized in that, The side panel (12) includes a side panel body (121) and a side panel flange (122). The lower end of the side panel body (121) is connected to the periphery of the bottom plate (11) and extends upward. The upper side of the side panel body (121) is connected to the side panel flange (122), and the side panel flange (122) extends outward.

4. The flow-guiding heat insulation plate of the burner according to claim 3, characterized in that, The side plate flange (122) is inclined upward from the inside to the outside.

5. A burner, characterized in that, The burner includes an ejector assembly (4), a burner head (3), an infrared combustion plate (2), and a flow-guiding heat insulation plate (1) for the burner according to any one of claims 2-4. The ejector assembly (4) includes an outer ejector (41) and an inner ejector (42). The burner head (3) is provided with an inner mixing chamber (300) and an outer mixing chamber (200) from the inside to the outside. One end of the inner ejector (42) is connected to the gas supply pipe outside the burner, and the other end is connected to the inner mixing chamber (300) inside the burner head (3). The infrared combustion plate (2) The heat-insulating plate (1) is installed on the burner head (3) and covers the outer mixing chamber (200) and the inner mixing chamber (300). The heat-insulating plate (1) is sleeved on the outside of the inner mixing chamber (300) through the clearance hole (100) and set in the middle of the outer mixing chamber (200) to divide the outer mixing chamber (200) into an upper mixing chamber (201) and a lower mixing chamber (202). One end of the outer ejector pipe (41) is connected to the gas supply pipe outside the burner, and the other end is connected to the lower mixing chamber (202).

6. The burner according to claim 5, characterized in that, The burner head (3) includes a burner head body (31) and a surrounding plate structure (32) disposed on the upper periphery of the burner head body (31). The infrared combustion plate (2) is disposed on the upper side of the surrounding plate structure (32). The surrounding plate structure (32) is disposed on the outer side of the side plate (12) and spaced apart from the side plate (12) to form a heat insulation cavity (400).

7. The burner according to claim 6, characterized in that, The enclosure structure (32) includes a first partition (321) and a second partition (322) connected to each other. The first partition (321) extends horizontally, and the second partition (322) extends vertically outside the first partition (321). The side plate body (121) of the side plate (12) is located inside the second partition (322) and spaced apart from the second partition (322). The side plate flange (122) of the side plate (12) is located above the first partition (321) and spaced apart from the first partition (321). The first partition (321), the second partition (322), the side plate body (121), and the side plate flange (122) enclose and form the heat insulation cavity (400).

8. The burner according to claim 7, characterized in that, The upper mixing chamber (201) includes an upper mixing chamber body (2011) and an air guide chamber (2012) that are connected to each other. The upper mixing chamber body (2011) is located above the bottom plate (11), and the air guide chamber (2012) is located above the side plate flange (122).

9. The burner according to any one of claims 5-8, characterized in that, The burner head (3) also includes a secondary air passage (500) disposed inside the internal mixing chamber (300).

10. The burner according to claim 9, characterized in that, It also includes an ignition needle (5), which is disposed in the secondary air channel (500) and extends above the infrared combustion plate (2).

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