Air volume adjustable type combustion assembly

Abstract

The utility model relates to the technical field of combustors, in particular to an air volume adjustable type combustion assembly. An air volume adjustable type combustion assembly comprises a base plate arranged in a hearth and used for playing a supporting role, a plurality of pipe bodies used for jetting mixed air and gas are arranged in the middle of the upper portion of the base plate, combustion heads used for jetting flames are arranged at the front ends of the pipe bodies, and gas mixing valves used for mixing the gas and the air are arranged at the tail ends of the pipe bodies. Wherein an ignition needle used for ignition operation and a detection needle used for detecting whether a combustion head is combusted after the ignition needle is ignited are arranged below one pipe body side by side, and a frame plate which is connected with the pipe bodies and plays a role in bearing and positioning is arranged on the upper parts of the ignition needle and the detection needle; an air pipe capable of sliding along the inner wall of the air mixing valve to change the air inlet amount is arranged in the air mixing valve. According to the combustion assembly, the ignition needle and the detection needle can be effectively limited and supported through the frame plate, and the air volume can be effectively adjusted through the air mixing valve and the air pipe.

Description

Technical Field

[0001] The present application relates to the technical field of burners, and in particular to a combustion assembly with adjustable air volume. Background Art

[0002] Traditional gas and air premix combustion components are widely used in household and industrial equipment such as water heaters and wall-mounted boilers. However, these components generally have the problem of inconvenient air volume regulation and cannot flexibly adjust the combustion state according to actual needs to achieve optimal combustion efficiency and environmental protection requirements.

[0003] In addition, during the combustion process, detonation often occurs due to uneven mixing of gas and air or incomplete combustion, causing the ignition needle and detection needle installed under the combustion tube to shift due to vibration, which not only affects the stability and reliability of ignition, but also reduces the accuracy of flame detection, posing a safety hazard. Utility Model Content

[0004] The problem to be solved by this application is that the existing gas and air premix combustion assembly is not only unable to adjust the air volume according to the combustion requirements, but is also prone to vibration and displacement of the ignition needle and detection needle below the combustion tube due to uneven mixing of gas and air or incomplete combustion.

[0005] In order to solve the above technical problems, a combustion assembly with adjustable air volume is provided, including a base plate arranged inside the furnace for supporting, a plurality of pipe bodies for spraying mixed air and gas are arranged in the middle position of the upper part of the base plate, a combustion head for spraying flame is arranged at the front end of the pipe body, and a mixing valve for mixing gas and air is arranged at the end of the pipe body, an ignition needle for ignition operation and a detection needle for detecting whether the combustion head is burning after the ignition needle is ignited are arranged side by side under one of the pipe bodies, a frame plate connected to the pipe body is arranged above the ignition needle and the detection needle to support and position, and an air duct is provided inside the mixing valve that can slide along its inner wall to change the air intake volume.

[0006] Since the combustion assembly of the present application is designed with a frame plate, a mixing valve and an air duct, the frame plate can be used to effectively limit and support the ignition needle and the detection needle, and the mixing valve and the air duct can be used to effectively adjust the air volume. This solves the problem of the gas and air premixed combustion assembly in the prior art, which not only cannot adjust the air volume according to combustion requirements, but is also prone to vibration displacement of the ignition needle and detection needle under the combustion tube due to uneven mixing of gas and air or incomplete combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of the front structure of the embodiment.

[0008] Figure 2It is a side structural schematic diagram of an embodiment.

[0009] Figure 3 Schematic diagram of the rear structure of the embodiment.

[0010] Figure 4 It is a schematic diagram of the three-dimensional structure of the mixing valve and air duct.

[0011] Figure 5 This is a schematic diagram of the cross-sectional structure of the mixing valve and air duct.

[0012] In the figure: 1. Base plate; 2. Insulation board; 3. Tube body; 4. Burner head; 5. Frame plate; 6. Detection pin; 7. Ignition pin; 8. Slot; 9. Mixing valve; 10. Air pipe; 11. Air nozzle; 12. Through slot; 13. Air duct; 14. Slide; 15. Butterfly nut; 16. Stud. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application. Example

[0014] The present application relates to a combustion assembly with adjustable air volume, such as Figure 1-5 As shown, the combustion assembly includes a base plate 1 arranged inside the furnace for supporting, a plurality of pipe bodies 3 for spraying mixed air and gas are arranged in the middle position of the upper part of the base plate 1, a combustion head 4 for spraying flame is arranged at the front end of the pipe body 3, and a mixing valve 9 for mixing gas and air is arranged at the end of the pipe body 3, an ignition needle 7 for ignition operation and a detection needle 6 for detecting whether the combustion head 4 is burning after the ignition needle 7 is ignited are arranged side by side below one of the pipe bodies 3, and a gas pipe 10 for conveying gas is arranged at the end of the mixing valve 9 and is vertically connected to it.

[0015] In order to prevent the ignition needle 7 and the detection needle 6 from being offset due to the detonation generated during the combustion process of the combustion head 4, a frame plate 5 connected to the tube body 3 is arranged on the upper part of the ignition needle 7 and the detection needle 6 to support and position them.

[0016] In order to be able to flexibly adjust the combustion state, an air duct 13 is added to the interior of the mixing valve 9, which can slide along its inner wall to change the air intake volume. In order to realize the air intake operation of the air duct 13, a through groove 12 is opened on the upper part of the side wall of the mixing valve 9. In order to realize the adjustment and positioning operation of the air duct 13, a slide groove 14 is also opened on the upper part of the side wall of the mixing valve 9. A stud 16 that can be connected to the air duct 13 is arranged inside the slide groove 14, and the end of the screw is locked and fixed by a butterfly nut 15.

[0017] Since the air duct 13 can adjust its position inside the mixing valve 9, in order to prevent the gas from escaping along the through groove 12, a conical gas nozzle 11 is added at the end of the gas pipe 10 and arranged along the axial direction of the mixing valve 9. This allows the gas to be gathered by the gas nozzle 11 and effectively sucked into the tube body 3 under the negative pressure generated inside the tube body 3 after combustion, thereby preventing it from escaping along the through groove 12 of the mixing valve 9.

[0018] Since the burner head 4 generates high temperature during combustion, in order to prevent the high temperature from causing thermal erosion to the base plate 1 and the components behind it, an insulation board 2 made of vermiculite is added to the side of the base plate 1 close to the burner head 4, and a slot 8 is left between the insulation board 2 and the base plate 1 to achieve ventilation and heat dissipation operations.

[0019] When in use, the base plate 1 with the insulation board 2 is installed inside the furnace, and then the position of the gas pipe 10 inside the gas mixing valve 9 is adjusted according to the required flame temperature, so that the air volume entering the gas pipe 10 along the gas mixing valve 9 channel can be changed, and then the gas pipe 10 is locked and fixed by the stud 16 and the butterfly nut 15 sliding along the slide 14, and the gas enters the gas mixing valve 9 along the gas pipe 10, and then is sprayed into the gas pipe 10 and the air is mixed with the gas nozzle 11 arranged inside the gas mixing valve 9. The gas is mixed, and then the mixed gas reaches the position of the combustion head 4 along the tube body 3, and then the mixed gas ejected from the burner head is ignited through the ignition operation of the ignition needle 7. The detection needle 6 on one side of the ignition needle 7 is used to detect whether the gas is ignited, so as to control the ignition needle 7 to stop repeating the ignition operation, and the hanging plate arranged on the upper part of the tube body 3 can support and position the ignition needle 7 and the detection needle 6, so as to avoid the detonation of the gas inside the combustion head 4, so as to cause the position of the ignition needle 7 and the detection needle 6 to be offset.

[0020] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0021] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0022] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A combustion assembly with adjustable air volume, comprising a base plate arranged inside a furnace for supporting the combustion chamber, characterized in that: A plurality of pipes for spraying mixed air and gas are arranged in the middle position of the upper part of the base plate, a combustion head for spraying flame is arranged at the front end of the pipe, and a mixing valve for mixing gas and air is arranged at the end of the pipe. An ignition needle for ignition operation and a detection needle for detecting whether the combustion head is burning after the ignition needle is ignited are arranged side by side under one of the pipes. A frame plate connected to the pipe body is arranged above the ignition needle and the detection needle to support and position the pipe. An air duct is provided inside the mixing valve, which can slide along its inner wall to change the air intake volume.

2. The air volume adjustable combustion assembly according to claim 1, characterized in that: The end of the gas mixing valve is provided with a gas pipe vertically connected thereto for conveying gas.

3. The air volume adjustable combustion assembly according to claim 1, characterized in that: A through groove is provided on the upper portion of the side wall of the mixing valve.

4. The air volume adjustable combustion assembly according to claim 3, characterized in that: A slide groove is also provided on the upper portion of the side wall of the mixing valve.

5. The air volume adjustable combustion assembly according to claim 4, characterized in that: A stud that can be connected to the air duct is arranged inside the slide, and the end of the screw is locked and fixed by a butterfly nut.

6. The air volume adjustable combustion assembly according to claim 2, characterized in that: The end of the air pipe is provided with a conical air nozzle arranged along the axial direction of the mixing valve.

7. The air volume adjustable combustion assembly according to claim 1, characterized in that: A temperature insulation plate made of vermiculite is arranged on one side of the base plate close to the combustion head.

8. The air volume adjustable combustion assembly according to claim 7, characterized in that: Slots are left between the insulation board and the base plate to achieve ventilation and heat dissipation.

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