Upper air inlet burner structure and stove

Abstract

The utility model provides an upper air inlet burner structure which comprises a first furnace end, a first outer injection pipe and a first gas mixing cavity, the first outer injection pipe is communicated with the first gas mixing cavity, a first inner pipe is arranged in the first outer injection pipe, and the first inner pipe is provided with an inlet section, a conical contraction section and a conical diffusion section. The inner pipes are arranged in the first outer injection pipe, the inner injection pipe and the second outer injection pipe, and the inlet sections, the conical contraction sections and the conical diffusion sections of the inner pipes form the Venturi effect, so that air can enter, and combustion is more sufficient.

Description

Technical Field

[0001] This utility model relates to a top-inlet burner structure and a stove. Background Technology

[0002] The burner head of the existing burner is generally equipped with a single outer ring ejector tube connected to the outer ring mixing chamber. When the mixed gas enters the outer ring gas exchange chamber from the outer ring ejector tube, the pressure is the greatest at the air inlet of the outer ring mixing chamber and the lowest at the position farthest from the air inlet. This can easily cause flame lift-off at the air inlet, and the time required for the mixed gas to go from the air inlet to fill the outer ring gas exchange chamber is long. Utility Model Content

[0003] This utility model proposes an upper air intake burner structure, including a first furnace head, a first external ejector tube, and a first mixing chamber. The first external ejector tube is connected to the first mixing chamber. A first inner tube is provided inside the first external ejector tube. The first inner tube is provided with an inlet section, a conical contraction section, and a conical diffusion section.

[0004] In one or more embodiments, a second burner head is further provided, the second burner head is provided with a second mixing chamber, an installation space is formed at the center of the first burner head, the second burner head is disposed on the installation space, and at least one inner ejector tube communicating with the second mixing chamber is provided on the second burner head, the inner ejector tube is provided with a second inner tube, and the second inner tube is also provided with an inlet section, a conical contraction section, and a conical diffusion section.

[0005] In one or more embodiments, the burner head is further provided with a second external ejector tube, the first external ejector tube is provided with a first inlet section and a second arc-shaped section, the second external ejector tube is provided with a second inlet section and a second arc-shaped section, and the air intake directions of the first inlet section and the second inlet section are opposite.

[0006] In one or more embodiments, the diameters of the circles containing the first arc segment and the second arc segment are the same, and the first external ejector and the second external ejector form a rotating air intake structure.

[0007] In one or more embodiments, the first external ejector tube and the second external ejector tube are located below the first furnace head and are shielded by the first mixing chamber.

[0008] In one or more embodiments, the second burner head is provided with a first inner ejector tube and a second inner ejector tube, the first inner ejector tube and the second inner ejector tube being connected to a second mixing chamber.

[0009] In one or more embodiments, the first inner ejector tube and the second inner ejector tube form a swirling gas delivery system.

[0010] In one or more embodiments, the first burner head and the second burner head are detachably connected together.

[0011] In one or more embodiments, it is further provided with a base, on which a first gas pipe and a second gas pipe are provided. The first gas pipe is provided with two outer jet seats, and the second gas pipe is provided with two inner jet seats. The outer jet seats correspond to the first outer ejector pipe and the second ejector pipe, respectively, and the inner jet seats correspond to the first inner ejector pipe and the second inner ejector pipe of the second furnace head, respectively.

[0012] In one or more embodiments, the first air inlet and the second air outlet of the first air pipe are at different horizontal positions, and the second air inlet and the second air outlet of the second air pipe are at different horizontal positions.

[0013] A stove, comprising the aforementioned top-intake burner structure.

[0014] The beneficial effects of this utility model are as follows: by setting an inner tube inside the first outer ejector tube, the inner ejector tube, and the second outer ejector tube, and the inner tube forming an inlet section, a conical contraction section, and a conical diffusion section to form a Venturi effect, air can be provided to enter, making combustion more complete;

[0015] A second burner is located at the center of the first burner head, which can improve the firepower of the burner. At the same time, a first external ejector tube and a second external ejector tube are installed on the first burner head, and the first and second external ejector tubes are connected to the outer ring mixing chamber. This allows the outer ring gas to enter the outer ring mixing chamber through the first and second external ejector tubes respectively, reducing the pressure of the mixed gas entering the outer ring mixing chamber and solving the problem of flame lift-off caused by high gas pressure in the burner. At the same time, the first and second external ring ejector tubes form a spiral gas delivery, which can accelerate the gas delivery speed, allowing the outer ring mixing chamber to be filled with mixed gas quickly, accelerating the ignition speed of the burner and solving the problem of slow ignition speed of the burner. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the top-inlet burner structure.

[0017] Figure 2 This is a schematic diagram of the connection structure between the first and second burners of the top-inlet burner.

[0018] Figure 3 This is a schematic diagram of the bottom connection structure of the first and second burners of the top-inlet burner.

[0019] Figure 4 This is a schematic diagram of the base structure.

[0020] Figure 5 This is a schematic diagram of the structure of the first inner tube. Detailed Implementation

[0021] The following description, in conjunction with the accompanying drawings, further illustrates the proposed solution:

[0022] See appendix Figure 1-4 An upward-inlet burner structure includes a first burner head 1, a first external ejector tube 12, and a first mixing chamber 11. The first external ejector tube 12 is connected to the first mixing chamber 11. A first inner tube 123 is provided inside the first external ejector tube 12. The first inner tube 123 is provided with an inlet section 1231, a conical contraction section 1232, and a conical diffusion section 1233.

[0023] Furthermore, it is also provided with a second burner head 2, which is provided with a second mixing chamber 21. An installation space is formed in the center of the first burner head 1, and the second burner head 2 is disposed in the installation space. At least one inner ejector tube 22 communicating with the second mixing chamber 21 is provided on the second burner head 1. The inner ejector tube 22 is provided with a second inner tube, which is also provided with an inlet section 1231, a conical contraction section 1232, and a conical diffusion section 1233.

[0024] Furthermore, the burner head is also provided with a second external ejector tube 13. The first external ejector tube 12 is provided with a first inlet section 121 and a second arc-shaped section 122. The second external ejector tube 13 is provided with a second inlet section 131 and a second arc-shaped section 132. The air intake directions of the first inlet section 121 and the second inlet section 131 are opposite.

[0025] Furthermore, the diameters of the circles containing the arcs of the first arc segment 121 and the second arc segment 122 are the same, and the first external ejector tube 12 and the second external ejector tube 13 form a rotating air intake structure.

[0026] Furthermore, the first external ejector tube 12 and the second external ejector tube 13 are located below the first furnace head 1 and are blocked by the first mixing chamber 11.

[0027] Furthermore, the second burner head 2 is provided with a first inner ejector tube 22 and a second inner ejector tube 23, which are connected to the second mixing chamber 21.

[0028] Furthermore, the first inner ejector tube 22 and the second inner ejector tube 23 form a swirling gas delivery system.

[0029] Furthermore, the first burner head 1 and the second burner head 2 are detachably connected together. The bottom of the first burner head 1 is provided with a mounting hole, and the second burner head 2 is connected to the mounting hole by screws to be installed in the center of the first burner head 1.

[0030] Furthermore, it is also provided with a base 3, on which a first gas pipe 31 and a second gas pipe 32 are provided. The first gas pipe 31 is provided with two outer jet seats 33, and the second gas pipe 32 is provided with two inner jet seats 34. The outer jet seats 33 correspond to the first outer ejector pipe 12 and the second ejector pipe 13 respectively, and the inner jet seats 34 correspond to the first inner ejector pipe 22 and the second inner ejector pipe 23 of the second furnace head 2 respectively.

[0031] Furthermore, the first air inlet and the second air outlet of the first air pipe 31 are at different horizontal positions, and the second air inlet and the second air outlet of the second air pipe 32 are at different horizontal positions.

[0032] Furthermore, the base 1 is provided with a sensor mounting hole 36 and a flameout protector mounting hole 35.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] The above preferred embodiments should be regarded as illustrative examples of the embodiments of the present application. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present application should be considered within the scope of protection of this patent.

Claims

1. A top-inlet burner structure, characterized in that, It includes a first furnace head, a first external ejector tube, and a first mixing chamber. The first external ejector tube is connected to the first mixing chamber. A first inner tube is provided inside the first external ejector tube. The first inner tube is provided with an inlet section, a conical contraction section, and a conical diffusion section.

2. The top-inlet burner structure according to claim 1, characterized in that, It is also provided with a second burner head, which is provided with a second mixing chamber. An installation space is formed in the center of the first burner head, and the second burner head is set on the installation space. The second burner head is provided with at least one inner ejector tube that communicates with the second mixing chamber. The inner ejector tube is provided with a second inner tube, which is also provided with an inlet section, a conical contraction section, and a conical diffusion section.

3. The top-inlet burner structure according to claim 1, characterized in that, The burner head is also provided with a second external ejector tube. The first external ejector tube is provided with a first inlet section and a second arc-shaped section. The second external ejector tube is provided with a second inlet section and a second arc-shaped section. The air intake directions of the first inlet section and the second inlet section are opposite.

4. The top-inlet burner structure according to claim 3, characterized in that, The first and second arc segments have the same diameter, and the first and second external ejectors form a rotating air intake structure.

5. The top-inlet burner structure according to claim 3, characterized in that, The first and second external ejectors are located below the first furnace head and are blocked by the first mixing chamber.

6. The top-inlet burner structure according to claim 2, characterized in that, The second burner head is provided with a first inner ejector tube and a second inner ejector tube, which are connected to the second mixing chamber, and form a spiral gas delivery system.

7. The top-inlet burner structure according to claim 1, characterized in that, The first and second burners are detachably connected together.

8. The top-inlet burner structure according to claim 1, characterized in that, It is also provided with a base, on which a first gas pipe and a second gas pipe are provided. The first gas pipe is provided with two external jet seats, and the second gas pipe is provided with two internal jet seats. The external jet seats correspond to the first external ejector pipe and the second ejector pipe respectively, and the internal jet seats correspond to the first internal ejector pipe and the second internal ejector pipe of the second furnace head respectively.

9. The top-inlet burner structure according to claim 8, characterized in that, The first air inlet and the second air outlet of the first trachea are at different horizontal positions, and the second air inlet and the second air outlet of the second trachea are at different horizontal positions.

10. A stove, characterized in that, Includes the top-inlet burner structure as described in any one of claims 1-9.

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