Combustor and oven

Abstract

The utility model provides a burner and an oven. The burner comprises a main burner, an auxiliary burner and an igniter. The main combustor comprises a first combustion pipe and a first gas supply pipe; the first combustion pipe is provided with a plurality of first fire holes; one end of the first gas supply pipe is communicated with the first combustion pipe; the auxiliary combustor comprises a second combustion pipe and a second gas supply pipe; the second combustion tube is adjacent to the first combustion tube and is provided with a plurality of second fire holes; one end of the second gas supply pipe is communicated with the second combustion pipe; and the ignition end of the igniter corresponds to the second fire hole. The combustor and the oven provided by the embodiment of the utility model can improve the flame stability and the temperature uniformity.

Description

Technical Field

[0001] The utility model relates to the technical field of ovens, in particular to a burner and an oven comprising the burner. Background Art

[0002] In modern kitchens, there are many kinds of cooking utensils, some are powered by electricity, and some are powered by gas. As for ovens, we all know that they use electricity, but gas ovens are not popular in domestic households at present, and they only appear in commercial products. The main reasons why household gas ovens are not popularized in households are as follows: on the one hand, combustion is a dynamic process, and its temperature fluctuation is greater than that of electric ovens, and the control accuracy is worse; on the other hand, the combustion conditions change with the gas quality, pipeline pressure, and environmental changes in the user's home, resulting in uneven combustion performance, unlike electric ovens, which have constant power.

[0003] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0004] The utility model aims to provide a burner which can improve flame stability and temperature uniformity and can be applied to a gas oven.

[0005] Another object of the present invention is to provide an oven, which comprises the above-mentioned burner and can improve the flame stability and temperature uniformity of the gas oven.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A burner comprises a main burner, an auxiliary burner and an igniter;

[0008] The main burner comprises a first combustion tube and a first gas supply tube; the first combustion tube is provided with a plurality of first fire holes; one end of the first gas supply tube is connected to the first combustion tube;

[0009] The auxiliary burner includes a second combustion tube and a second air supply tube; the second combustion tube is adjacent to the first combustion tube and is provided with a plurality of second fire holes; one end of the second air supply tube is connected to the second combustion tube;

[0010] The ignition end of the igniter corresponds to the second fire hole.

[0011] According to one embodiment of the utility model, a flue gas plate is provided above the main burner, the bottom of the flue gas plate is located in the middle of the first combustion tube, and an annular guide plate is provided on the top of the flue gas plate, and the guide plate is located above the first combustion tube.

[0012] According to one embodiment of the utility model, the smoke plate is in a trumpet shape, and its diameter gradually increases from bottom to top.

[0013] According to an embodiment of the utility model, a bracket is provided at the bottom of the main burner, and the top of the bracket is fixedly connected to the bottom of the flue gas plate.

[0014] According to one embodiment of the present invention, the angle between the line between the center of the first fire hole and the center of the maximum diameter circle on the outer circumference of the first combustion tube and the horizontal direction is 30°-60°;

[0015] And / or, the diameter of the first fire hole is 1mm-3mm, and the interval is 2mm-4mm; the diameter of the first air supply pipe is 15mm-30mm, and the length is 150mm-300mm;

[0016] And / or, the diameter of the second fire holes is 1mm-3mm, and the interval is 2mm-4mm; the diameter of the second air supply pipe is 15mm-30mm, and the length is 150mm-300mm.

[0017] According to one embodiment of the present utility model, the diameter of the first fire hole and / or the second fire hole is 2 mm, the diameter of the first air supply pipe and / or the second air supply pipe is 19 mm, and the length is 165 mm.

[0018] According to one embodiment of the utility model, an air inlet is provided on the side of the end of the first air supply pipe and / or the second air supply pipe, and a damper plate is provided at the end of the first air supply pipe and / or the second air supply pipe, and the damper plate is provided with a baffle corresponding to the air inlet and the damper plate can rotate around the axis of the first air supply pipe and / or the second air supply pipe.

[0019] According to one embodiment of the present invention, the size of the air inlet is 10-15 mm×15-30 mm.

[0020] According to one embodiment of the utility model, the first air supply pipe and the second air supply pipe are successively passed through the first fixing plate and the second fixing plate, and the igniter is fixed on the first fixing plate.

[0021] The utility model also provides an oven, comprising a shell and an inner container, wherein a door is arranged on the shell; and the inner container is provided with the burner.

[0022] Compared with the prior art, the advantages and beneficial effects of the embodiments of the present invention are:

[0023] The burner provided in the embodiment of the utility model has two independent combustion air passages, wherein the main burner provides a large main fire power air passage and provides most of the combustion heat; the auxiliary burner provides a small ignition flame stabilization air passage, with flame stabilization as the main function and combustion as the auxiliary function. When the main burner is turned off, the auxiliary burner can also burn independently to maintain a stable flame, improve the stability of flame combustion, and further improve the uniformity of flame combustion temperature. The burner provided in the embodiment of the utility model has an auxiliary burner arranged near the main burner, and the flame is transmitted to the main burner through the combustion of the auxiliary burner, which can improve the overall combustion performance of the burner and reduce the influence of gas and environmental factors on the combustion performance.

[0024] The burner provided in the embodiment of the utility model is provided with a gradually opening smoke plate, which is installed in the middle of the main burner, so that the flame combustion direction will not gather in the middle, and the flame will be forced to expand outward and upward, while the end will die out, and its combustion smoke will also expand upward and outward, avoiding excessive heat concentration in the middle. When applied to an oven, it can further improve the overall temperature uniformity of the oven. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0026] Figure 1 A schematic diagram of the structure of a burner provided in an embodiment of the utility model;

[0027] Figure 2 An exploded schematic diagram of a burner provided in an embodiment of the utility model;

[0028] Figure 3 A schematic diagram of the structure of a main burner of a burner provided in an embodiment of the utility model;

[0029] Figure 4 A schematic diagram of the structure of the auxiliary burner of the burner provided in the embodiment of the utility model;

[0030] Figure 5 A schematic diagram of the structure of a flue gas plate of a burner provided in an embodiment of the utility model;

[0031] Figure 6 A side view of a flue gas plate of a burner provided in an embodiment of the utility model;

[0032] Figure 7 The present invention is a schematic diagram of an oven provided in an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Main burner; 11. First combustion tube; 12. First air supply tube; 13. First fire hole; 131. First flame transmission hole; 15. First air inlet; 16. First damper plate; 161. First baffle plate; 2. Auxiliary burner; 21. Second combustion tube; 22. Second air supply tube; 23. Second fire hole; 231. Second flame transmission hole; 24. Gas nozzle gas tube; 25. Second air inlet; 26. Second damper plate; 261. Second baffle plate; 3. Ignitor; 4. Smoke plate; 41. Guide plate; 5. Bracket; 6. First fixing plate; 7. Second fixing plate; 8. Shell; 81. Door body; 9. Inner tank. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0036] In the description of the present invention, "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. The directions or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense, for example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] like Figure 1 As shown, an embodiment of the utility model provides a burner, including a main burner 1, an auxiliary burner 2 and an igniter 3.

[0038] like Figure 2 , Figure 3As shown, the main burner 1 includes a first combustion tube 11 and a first gas supply tube 12. The first combustion tube 11 is provided with a plurality of first fire holes 13 for providing a gas combustion environment. One end of the first gas supply tube 12 is connected to the first combustion tube 11 for introducing a mixed gas of air and gas into the first combustion tube 11, and the other end of the first gas supply tube 12 is connected to a gas source, such as a gas nozzle gas pipe (not shown).

[0039] like Figure 2 , Figure 4 As shown, the auxiliary burner 2 includes a second combustion tube 21 and a second gas supply tube 22. The second combustion tube 21 is adjacent to the first combustion tube 11 and is provided with a plurality of second fire holes 23. One end of the second gas supply tube 22 is connected to the second combustion tube 21 for introducing a mixed gas of air and fuel gas into the second combustion tube 21, and the other end of the second gas supply tube 22 is connected to a fuel gas source, such as a fuel gas nozzle gas pipe 24.

[0040] like Figure 1 , Figure 2 As shown, the ignition end of the igniter 3 corresponds to the second fire hole 23 and is used to ignite the fuel gas and air mixture flowing out of the second fire hole 23 .

[0041] The burner provided by the embodiment of the utility model has two independent combustion air passages, wherein the main burner 1 provides a large main fire power air passage and provides most of the combustion heat; the auxiliary burner 2 provides a small ignition and flame stabilization air passage, with flame stabilization as the main function and combustion as the auxiliary function. When the burner provided by the embodiment of the utility model is in use, when the igniter 3 (such as an ion electric spark needle) is working, an electric spark is generated and encounters the gas-air mixture discharged from the second combustion tube 21 of the auxiliary burner 2, thereby igniting the flame. Since the second combustion tube 21 of the auxiliary burner 2 is adjacent to and close to the first combustion tube 11 of the main burner 1, the second combustion tube 21 transmits the flame to the first fire hole 13 of the main burner 1 during combustion to ignite the main burner 1. When the main burner 1 is closed, the auxiliary burner 2 can also burn independently to maintain a stable flame, improve the stability of flame combustion, and thereby improve the uniformity of flame combustion temperature. The burner provided in the embodiment of the utility model has an auxiliary burner 2 arranged near the main burner 1, and the flame is transmitted to the main burner through the combustion of the auxiliary burner, which can improve the overall combustion performance of the burner and reduce the influence of gas and environmental factors on the combustion performance.

[0042] like Figure 3 , Figure 4As shown, in one embodiment of the utility model, the first combustion tube 11 is annular, and the second combustion tube 21 is a straight tube with a closed end, and an angle, such as an obtuse angle, is formed between the axis of the first combustion tube 11 and the axis of the second air supply tube 22, so that when the first air supply tube 12 and the second air supply tube 22 are arranged in parallel, the second combustion tube 21 can be adjacent to and close to the side of the annular first combustion tube 11 to better transfer the flame to the first combustion tube 11.

[0043] In one embodiment of the utility model, when the first combustion tube 1 is placed horizontally, the angle between the line between the center of the first fire hole 13 and the center of the maximum diameter circle on the outer circumference of the first combustion tube 11 and the horizontal direction is 30°-60°. In this embodiment, two rows of first fire holes 13 are designed between 30°-60° on the side of the first combustion tube 11. The diameter of the first fire holes 13 is between 1mm-3mm. The two rows of first fire holes 13 are staggered so that the first fire holes 13 are arranged in a triangular shape and are spaced between 2mm-4mm. The size of the first fire hole 13 is not only related to the size of the firepower, but also affects the combustion stability of the main burner 1. In this embodiment, the preferred diameter of the first fire hole 13 is 2mm. The diameter of the first air supply pipe 12 is between 15mm-30mm, and the length is between 150mm-300mm. The length and diameter of the first air supply pipe 12 directly affect the mixing quality of the fuel gas and primary air, and directly affect the combustion performance. In this embodiment, the first air supply pipe 12 preferably has a diameter of 19mm and a length of 165mm.

[0044] Based on the same principle, the diameter of the second fire hole 23 is 1mm-3mm, and the interval is 2mm-4mm. The diameter of the second air supply pipe 22 is 15mm-30mm, and the length is 150mm-300mm. Preferably, the diameter of the second fire hole 23 is 2mm, and the diameter of the second air supply pipe 22 is 19mm, and the length is 165mm.

[0045] In one embodiment of the present invention, Figure 2-Figure 4 As shown, a first flame transfer hole 131 is provided on the side of the first combustion tube 11 opposite to the second combustion tube 21, and the second combustion tube 21 is provided with a second flame transfer hole 231 corresponding to the first flame transfer hole 131, and the second flame transfer holes 231 are arranged in a circle along the circumference of the second combustion tube 21 so that the flame can be better transferred from the auxiliary burner 2 to the main burner 1.

[0046] like Figure 1 , Figure 2As shown, in one embodiment of the utility model, a first air inlet 15 is provided on the side of the end of the first air supply pipe 12, and a first damper plate 16 is provided at the end of the first air supply pipe 12. The first damper plate 16 is provided with a first baffle 161 corresponding to the first air inlet 15 and the first damper plate 16 can rotate around the axis of the first air supply pipe 12. When the first damper plate 16 rotates, the size of the overlapping area between the first air inlet 15 and the first baffle 161 can be adjusted, thereby adjusting the opening of the first air inlet 15, and finally adjusting the mixing ratio of air and gas in the first air supply pipe 12, so that the combustion performance of the gas in the first combustion pipe 11 is optimized. Correspondingly, a second air inlet 25 is provided at the side of the end of the second air supply pipe 22, and a second damper plate 26 is provided at the end of the second air supply pipe 22. The second damper plate 26 is provided with a second baffle plate 261 corresponding to the second air inlet 25 and the second damper plate 26 can rotate around the axis of the second air supply pipe 22. When the second damper plate 26 rotates, the size of the overlapping area between the second air inlet 25 and the second baffle plate 261 can be adjusted, thereby adjusting the opening of the second air inlet 25, and finally adjusting the mixing ratio of air and gas in the second air supply pipe 22, so that the combustion performance of the gas in the second combustion pipe 21 is optimized. The first air inlet 15 and the second air inlet 25 can be rectangular, with a cross-sectional size of 10-15mm×15-30mm. The size of the first air inlet 15 and the second air inlet 25 affects the intake volume of the primary air. At the same time, the excessive length of the first air inlet 15 and the second air inlet 25 will cause gas overflow. Preferably, the cross-sectional size of the first air inlet 15 and the second air inlet 25 in this embodiment is 12mm×15mm.

[0047] like Figure 1 , Figure 2 , Figure 5 , Figure 6 As shown, in a preferred embodiment of the utility model, a smoke plate 4 is provided above the main burner 1, the bottom of the smoke plate 4 is located in the middle of the first combustion tube 11, and a ring-shaped guide plate 41 is provided on the top of the smoke plate 4, and the guide plate 41 is located above the first combustion tube 11. The guide plate 41 can guide the combustion trend of the flame of the first combustion tube 11, so that the flame burns in a certain space, improves the stability of the flame combustion and the temperature uniformity, so as to adapt to the application of the oven. Preferably, the smoke plate 4 is in a bell-mouth shape, and the diameter gradually increases from bottom to top. In this embodiment, the smoke plate 4 is a gradual opening type, which can guide the flame combustion of the main burner 1. Specifically, the gradual opening type smoke plate 4 is gradually expanded from inside to outside and from bottom to top, and is installed in the middle of the main burner 1, so that the flame combustion direction will not gather in the middle, and the flame is forced to expand outward and upward, and the end dies at the same time, and its combustion smoke will also expand upward and outward, avoiding excessive heat concentration in the middle point, and when applied to the oven, it can further improve the overall temperature uniformity of the oven.

[0048] like Figure 1 , Figure 2 As shown, in one embodiment of the utility model, a bracket 5 is provided at the bottom of the main burner 1, and the top of the bracket 5 is fixedly connected to the bottom of the flue plate 4, and the bracket 5 and the flue plate 4 sandwich the first combustion tube 11. Specifically, the bracket 5 can be in an inverted U shape, and the top is fixedly connected to the bottom of the flue plate 4 in the first combustion tube 11, for example, by a bolt or other connecting member. The bracket 5 can be conveniently and detachably fixedly connected to the bottom of the oven inner tank, thereby improving the convenience of burner installation and maintenance and replacement.

[0049] In order to improve the overall structural stability of the burner, such as Figure 1 , Figure 2 As shown, the first air supply pipe 12 and the second air supply pipe 22 are successively passed through the first fixing plate 6 and the second fixing plate 7, and the igniter 3 is fixed on the first fixing plate 6, so that the main burner 1, the auxiliary burner 2 and the igniter 3 are integrated together to form a whole.

[0050] like Figure 7 As shown, an embodiment of the utility model further provides an oven, comprising a shell 8 and an inner pot 9 located inside the shell 8, the shell 8 is provided with a door body 81 corresponding to the inner pot 9, the inner pot 9 is provided with the above-mentioned burner, for example, the above-mentioned burner is fixedly installed at the bottom of the inner pot 9.

[0051] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A burner, characterized in that: It comprises a main burner (1), an auxiliary burner (2) and an igniter (3); The main burner (1) comprises a first combustion tube (11) and a first air supply tube (12); the first combustion tube is provided with a plurality of first fire holes (13); one end of the first air supply tube (12) is in communication with the first combustion tube (11); The auxiliary burner (2) comprises a second combustion tube (21) and a second air supply tube (22); the second combustion tube (21) is adjacent to the first combustion tube (11) and is provided with a plurality of second fire holes (23); one end of the second air supply tube (22) is in communication with the second combustion tube (21); The ignition end of the igniter (3) corresponds to the second fire hole (23).

2. The burner according to claim 1, characterized in that A flue gas plate (4) is provided above the main burner (1), the bottom of the flue gas plate (4) is located in the middle of the first combustion tube (11), and an annular guide plate is provided on the top of the flue gas plate (4), the guide plate is located above the first combustion tube (11).

3. The burner according to claim 2, characterized in that: The smoke plate (4) is in a trumpet shape, and its diameter gradually increases from bottom to top.

4. The burner according to claim 2, characterized in that: A bracket (5) is provided at the bottom of the main burner (1), and the top of the bracket (5) is fixedly connected to the bottom of the flue gas plate (4).

5. The burner according to any one of claims 1 to 4, characterized in that: The angle between a line connecting the center of the first fire hole (13) and the center of the circle with the largest diameter on the outer circumference of the first combustion tube (11) and the horizontal direction is 30°-60°; And / or, the diameter of the first fire hole (13) is 1 mm-3 mm, and the interval is 2 mm-4 mm; the diameter of the first air supply pipe (12) is 15 mm-30 mm, and the length is 150 mm-300 mm; And / or, the diameter of the second fire holes (23) is 1 mm-3 mm, and the interval is 2 mm-4 mm; the diameter of the second air supply pipe (22) is 15 mm-30 mm, and the length is 150 mm-300 mm.

6. The burner according to claim 5, characterized in that The diameter of the first fire hole (13) and / or the second fire hole (23) is 2 mm, and the diameter of the first air supply pipe (12) and / or the second air supply pipe (22) is 19 mm, and the length is 165 mm.

7. The burner according to any one of claims 1 to 4, characterized in that: An air inlet is provided on a side of the end of the first air supply pipe (12) and / or the second air supply pipe (22), and a damper plate is provided at the end of the first air supply pipe (12) and / or the second air supply pipe (22), wherein the damper plate is provided with a baffle corresponding to the air inlet and the damper plate is rotatable around an axis of the first air supply pipe (12) and / or the second air supply pipe (22).

8. The burner according to claim 7, characterized in that The size of the air inlet is 10-15 mm×15-30 mm.

9. The burner according to any one of claims 1 to 4, characterized in that: The first air supply pipe (12) and the second air supply pipe (22) are respectively passed through the first fixing plate (6) and the second fixing plate (7), and the igniter (3) is fixed on the first fixing plate (6).

10. An oven, comprising a shell (8) and an inner container (9), wherein the shell (8) is provided with a door (81), characterized in that: The inner container (9) is provided with a burner according to any one of claims 1 to 9.

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