Nozzle holder and combustor

Abstract

The utility model provides a nozzle seat and a burner, the nozzle seat comprises a seat body, the seat body is provided with a through nozzle hole and a first air inlet channel, and the direction of the first air inlet channel is parallel to the axial direction of the nozzle hole; the base body is further provided with a second air inlet channel, an included angle is formed between the direction of the second air inlet channel and the axial direction of the nozzle hole, and the second air inlet channel is communicated with the nozzle hole. According to the nozzle holder and the burner, the primary air coefficient can be increased, the mixing proportion of fuel gas and air can be increased, yellow flames can be reduced, and heat efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a nozzle seat and a burner. Background Art

[0002] Existing burner nozzle holders on the market are designed solely for nozzle installation. However, with increasing demands for improved thermal efficiency and yellow flame operating conditions, the demand for primary air injection capacity is also increasing. Existing technical solutions optimize injection capacity by adjusting the dimensions of the ejector tubes. However, this improvement is limited, and further optimization to increase the primary air coefficient is not possible.

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

[0004] The purpose of the utility model is to provide a nozzle seat, which can improve the primary air coefficient, increase the mixing ratio of gas and air, reduce yellow flames, and improve thermal efficiency.

[0005] Another object of the present invention is to provide a burner, which includes the above-mentioned nozzle seat, which can improve the primary air coefficient, increase the mixing ratio of gas and air, reduce yellow flames, and improve thermal efficiency.

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

[0007] A nozzle seat includes a seat body, the seat body is provided with a penetrating nozzle hole and a first air inlet channel, the direction of the first air inlet channel is parallel to the axial direction of the nozzle hole; the seat body is also provided with a second air inlet channel, the direction of the second air inlet channel forms an angle with the axial direction of the nozzle hole, and is connected to the nozzle hole.

[0008] According to one embodiment of the present invention, the angle is 60-90 degrees.

[0009] According to one embodiment of the present invention, the angle is 90 degrees.

[0010] According to one embodiment of the present invention, the second air inlet channel is connected to a mounting base to form a sealed air passage, and the mounting base is connected to an air blowing device.

[0011] According to one embodiment of the present invention, the cross section of the first air inlet channel is fan-shaped.

[0012] According to one embodiment of the present invention, the nozzle hole is provided in the middle of the seat body.

[0013] The utility model also provides a burner, comprising the above-mentioned nozzle seat.

[0014] According to one embodiment of the present invention, the burner further comprises a nozzle, wherein the nozzle is located in the nozzle hole and forms an annular gap with the nozzle hole, and the annular gap is communicated with the second air inlet channel.

[0015] According to one embodiment of the present invention, the burner also includes an ejector tube, which includes a tube body and a joint provided at the end of the tube body, the inner diameter of the joint gradually increases from the inside to the outside along the axial direction of the tube body, and the end of the joint is connected to the seat body; the axial direction of the nozzle hole coincides with the axial direction of the tube body.

[0016] According to one embodiment of the present invention, the outer diameter of the annular gap is smaller than or equal to the inner diameter of the tube body.

[0017] Compared with the prior art, the advantages and beneficial effects of the embodiments of the present invention are:

[0018] The nozzle holder and burner provided by the embodiment of the present invention can deliver primary air through the first air inlet channel and directly into the ejector tube; in addition, primary air can also be delivered through the second air inlet channel and delivered into the ejector tube through the annular gap. The nozzle holder and burner provided by the embodiment of the present invention can improve the primary air coefficient, improve the mixing ratio of gas and air, reduce yellow flames, and improve thermal efficiency. In addition, the directions of the first air inlet channel and the second air inlet channel of the nozzle holder are consistent with the gas injection direction, which is conducive to improving the mixing effect of gas and air. Moreover, the primary air entering the annular gap between the nozzle and the nozzle hole from the second air inlet channel is closer to the center of the nozzle, has greater kinetic energy, and is better mixed. Finally, the primary air intake volume can be preliminarily controlled by controlling the size of the annular gap between the nozzle and the nozzle hole, and then the damper corresponding to the first air inlet channel can be fine-tuned to further adjust the primary air volume. The adjustment range is large and the effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present invention are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention.

[0020] Figure 1 A schematic structural diagram of a nozzle holder provided in an embodiment of the present utility model;

[0021] Figure 2 A schematic structural diagram of the top direction of the nozzle holder provided by an embodiment of the present utility model;

[0022] Figure 3 A schematic diagram of the structure of the nozzle holder bottom direction provided by an embodiment of the utility model;

[0023] Figure 4 A schematic cross-sectional view of a nozzle holder provided in an embodiment of the present utility model;

[0024] Figure 5 A schematic diagram of the installation structure of the nozzle holder provided in an embodiment of the utility model;

[0025] Figure 6 A schematic structural diagram of a nozzle holder with a blast device provided in an embodiment of the present utility model;

[0026] Figure 7 A cross-sectional schematic diagram of a nozzle holder with a blast device provided in an embodiment of the present utility model;

[0027] Figure 8 A longitudinal sectional view of a nozzle holder with a blast device provided in an embodiment of the present utility model;

[0028] Figure 9 This is a schematic structural diagram of a burner provided in an embodiment of the present utility model.

[0029] Description of reference numerals:

[0030] 1. Base; 10. Nozzle hole; 11. First air inlet channel; 12. Second air inlet channel; 13. Annular gap; 2. Ejector tube; 21. Tube body; 22. Connector; 3. Nozzle; 31. Knife back groove; 4. Mounting base; 41. Air duct; 5. Blowing device; 6. Burner head. DETAILED DESCRIPTION

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with examples. 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 can 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 part of one embodiment can be used in another embodiment to produce yet another embodiment. Therefore, it is intended that the present invention encompass such modifications and variations as come within the scope of the appended claims and their equivalents.

[0032] In the description of the present invention, the words "first", "second" and similar terms do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "include" or "comprises" and similar terms mean that the element or object preceding the word includes the elements or objects listed after the word and their equivalents, but does not exclude other elements or objects. The terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and other directions or positions are based on the directions or positions shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention. The terms "connected", "connected" and "disposed" used in the present invention should be understood in a broad sense. For example, they can mean fixed connection or detachable connection; direct connection or indirect connection through an intermediate component; wired electrical connection, radio connection, or wireless communication signal connection. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0033] like Figure 1-Figure 4 As shown, an embodiment of the present invention provides a nozzle holder, comprising a holder body 1, the holder body 1 being provided with a nozzle hole 10 and a first air inlet channel 11 extending therethrough. The first air inlet channel 11 is oriented parallel to the axial direction of the nozzle hole 10. The holder body 1 is further provided with a second air inlet channel 12, the second air inlet channel 12 being oriented at an angle to the axial direction of the nozzle hole 10 and being in communication with the nozzle hole 10. The orientation of the first air inlet channel 11 and the second air inlet channel 12 refers to the direction in which their lengths extend.

[0034] like Figure 5As shown, when the nozzle holder provided by the embodiment of the present invention is installed and used, the holder body 1 is mounted on the air inlet end of the ejector tube 2 of the burner, and the nozzle 3 is installed in the nozzle hole 10 of the holder body 1. An annular gap 13 is formed between the nozzle hole 10 and the nozzle 3, and the second air inlet channel 12 is connected to the annular gap 13. In this way, the nozzle holder provided by the embodiment of the present invention can deliver primary air through the first air inlet channel 11 and directly into the ejector tube 2. Alternatively, primary air can be delivered through the second air inlet channel 12 and then into the ejector tube 2 through the annular gap 13. The nozzle holder provided by the embodiment of the present invention can improve the primary air coefficient, increase the gas-air mixing ratio, reduce yellow flames, and improve thermal efficiency. Furthermore, the first and second air inlet channels 11, 12 of the nozzle holder are aligned with the direction of gas injection, which helps improve gas-air mixing. Furthermore, the primary air entering the annular gap 13 between the nozzle 3 and the nozzle hole 10 through the second air inlet channel 12 is closer to the center of the nozzle 3, resulting in greater kinetic energy and better mixing. Finally, the primary air intake volume can be preliminarily controlled by controlling the size of the annular gap 13 between the nozzle 3 and the nozzle hole 10, and then the damper corresponding to the first air inlet channel 11 can be fine-tuned to further adjust the primary air volume. The adjustment range is large and the effect is good.

[0035] Furthermore, the angle between the direction of the second air inlet channel 12 and the axial direction of the nozzle hole 10 can be 60-90 degrees. In this embodiment, the angle is 90 degrees, that is, the direction of the second air inlet channel 12 and the axial direction of the nozzle hole 10 are perpendicular to each other.

[0036] It should be noted that this embodiment is described by taking two nozzle holes 10 provided on the base body 1 as an example, and the two nozzle holes 10 correspond to the ejector pipes 2 of the outer and inner rings of the burner, respectively. In other embodiments, the base body 1 may be provided with only one nozzle hole 10 corresponding to only one ejector pipe 2.

[0037] In an embodiment of the present invention, the number of the first air inlet channel 11 and the second air inlet channel 12 can be one or more, and they are arranged along the circumference of the nozzle hole 10 .

[0038] like Figure 6-Figure 8 As shown, to increase the primary air intake volume, the second air inlet channel 12 is connected to the mounting base 4, forming a sealed airway 41. The mounting base 4 is connected to a blower 5, such as a blower. The blower 5 provides airflow, and the blower controls the airflow volume, effectively resolving the primary air issue without damaging the ejector tube 2 or affecting its original ejection performance. In other words, while maintaining the original performance of the ejector tube 2, the airflow further enhances this performance. This eliminates the need to compromise the original performance of the ejector tube 2 and then painstakingly improve its performance.

[0039] like Figure 7 、 Figure 8 As shown, the blast device 5 blows primary air into the primary air containing cavity (the sealed air passage 41 formed by the mounting seat 4 and the second air inlet channel 12) to form a certain pressure. The air is then injected into the ejector tube 2 from the annular gap 13 between the nozzle 3 and the nozzle hole 10 to mix with the gas. Since there is a complete annular gap 13 between the nozzle 3 and the nozzle hole 10, the air is evenly injected into the ejector tube 2 from all sides of the nozzle 3, and the mixing effect is better. This can solve the problem of poor mixing effect of air and gas in blast burners on the market, which requires increasing the blast volume to better reduce smoke, etc. However, this also results in a large amount of primary air, which takes away some heat and the thermal efficiency does not reach the optimal value. By adjusting the size of the annular gap 13, the blast volume of the burner inner and outer rings (corresponding to different ejector tubes and nozzle seats) with different loads can be controlled to achieve the optimal internal and external air-gas ratio.

[0040] like Figure 1 As shown, in one embodiment of the present invention, the cross section of the first air inlet channel 11 is fan-shaped.

[0041] like Figure 4 As shown, in one embodiment of the present invention, the nozzle hole 10 is provided in the middle of the base body 1 to facilitate alignment with the ejector tube 2 of the burner.

[0042] like Figure 9 As shown, an embodiment of the present invention further provides a burner, comprising the above-mentioned nozzle seat.

[0043] Specifically, refer to Figure 5-Figure 8 , the burner also includes a nozzle 3, which is located in the nozzle hole 10 and forms an annular gap 13 with the nozzle hole 10, and the annular gap 13 is connected to the second air inlet channel 12. The burner provided by the embodiment of the present utility model can send primary air through the first air inlet channel 11 and directly send it into the ejection tube 2; in addition, primary air can also be sent through the second air inlet channel 12 and sent into the ejection tube 2 through the annular gap 13. The burner provided by the embodiment of the present utility model can improve the primary air coefficient, improve the mixing ratio of gas and air, reduce yellow flames, and improve thermal efficiency. In addition, the directions of the first air inlet channel 11 and the second air inlet channel 12 of the nozzle holder of the burner are consistent with the gas injection direction, which is conducive to improving the mixing effect of gas and air, and the primary air entering the annular gap 13 between the nozzle 3 and the nozzle hole 10 from the second air inlet channel 12 is closer to the center of the nozzle 3, has greater kinetic energy, and is better mixed. Finally, the primary air intake volume can be preliminarily controlled by controlling the size of the annular gap between the nozzle 3 and the nozzle hole 10, and then the air damper corresponding to the first air inlet channel 11 can be fine-tuned to further adjust the primary air volume. The adjustment range is large and the effect is good.

[0044] In this embodiment, reference Figure 5 The nozzle 3 is provided with a tool-retracting groove 31, which abuts against the side surface of the nozzle seat body 1, thereby ensuring that the nozzle 3 is installed in place with good centering.

[0045] refer to Figure 5 、 Figure 8 In one embodiment of the present invention, the burner further comprises an ejector tube 2, comprising a tube body 21 and a connector 22 disposed at the distal end of the tube body 21. The inner diameter of the connector 22 gradually increases from the inside outward along the axial direction of the tube body 21, and the distal end of the connector 22 is connected to the base 1. The axial direction of the nozzle hole 10 coincides with the axial direction of the tube body 21, thereby improving the mixing effect of the gas and air.

[0046] In a preferred embodiment of the present invention, the outer diameter of the annular gap 13 is less than or equal to the inner diameter of the tube body 21. This allows the primary air entering the annular gap 13 from the second air inlet channel 12 to enter the ejector tube 2 in a direction parallel to the axial direction of the tube body 21 of the ejector tube 2, consistent with the direction of gas injection, which is conducive to further improving the mixing effect of gas and air.

[0047] like Figure 9 As shown, in one embodiment of the present invention, the burner further comprises a burner head 6 having an inner ring and an outer ring, each corresponding to an ejector tube 2, and each ejector tube 2 corresponding to two nozzles 3 on a nozzle holder. The nozzle holder also has a damper on the air inlet end surface for adjusting the cross-sectional size of the first air inlet channel 11. The damper structure can adopt an existing structure and will not be described in detail.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A nozzle holder, characterized in that: The invention comprises a base body (1), wherein the base body (1) is provided with a nozzle hole (10) and a first air inlet channel (11) extending therethrough, wherein the direction of the first air inlet channel (11) is parallel to the axial direction of the nozzle hole (10); and the base body (1) is further provided with a second air inlet channel (12), wherein the direction of the second air inlet channel (12) forms an angle with the axial direction of the nozzle hole (10) and is communicated with the nozzle hole (10).

2. The nozzle holder according to claim 1, characterized in that The angle is 60-90 degrees.

3. The nozzle holder according to claim 1, wherein: The angle is 90 degrees.

4. The nozzle holder according to any one of claims 1 to 3, characterized in that The second air inlet channel (12) is connected to the mounting seat (4) to form a sealed air passage (41), and the mounting seat (4) is connected to the air blowing device (5).

5. The nozzle holder according to any one of claims 1 to 3, characterized in that The cross section of the first air inlet channel (11) is fan-shaped.

6. The nozzle holder according to any one of claims 1 to 3, characterized in that The nozzle hole (10) is provided in the middle of the seat body (1).

7. A burner, characterized in that: Comprising the nozzle holder according to any one of claims 1 to 6.

8. The burner according to claim 7, characterized in that It also includes a nozzle (3), the nozzle (3) being located in the nozzle hole (10) and forming an annular gap (13) with the nozzle hole (10), the annular gap (13) being in communication with the second air inlet channel (12).

9. The burner according to claim 8, characterized in that The ejector tube (2) further comprises a tube body (21) and a joint (22) provided at the end of the tube body (21), wherein the inner diameter of the joint (22) gradually increases from the inside to the outside along the axial direction of the tube body (21), and the end of the joint (22) is connected to the base body (1); and the axial direction of the nozzle hole (10) coincides with the axial direction of the tube body (21).

10. The burner according to claim 9, characterized in that The outer diameter of the annular gap (13) is smaller than or equal to the inner diameter of the tube body (21).

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