Efficient gas igniter

Abstract

The utility model provides a high-efficiency gas igniter which comprises an ignition combustion-supporting air channel, one end of the fuel gas combustion-supporting air mixing channel is communicated with one end of the ignition combustion-supporting air channel, and the fuel gas combustion-supporting air mixing channel extends to one end of the fuel gas combustion-supporting air mixing channel from one end of the ignition combustion-supporting air channel; the fuel gas channel is located on the periphery of the ignition combustion-supporting air channel and the fuel gas combustion-supporting air mixing channel and extends to the fuel gas combustion-supporting air mixing channel from the ignition combustion-supporting air channel; the fuel gas nozzle is located in the channel wall of the fuel gas combustion-supporting air mixing channel, and the fuel gas channel communicates with the fuel gas combustion-supporting air mixing channel through the fuel gas nozzle; and the flame stabilizing shield body is positioned in the fuel gas combustion-supporting air mixing channel. The efficient gas igniter can be in a self-air-suction mode, can suck normal-temperature air to serve as ignition combustion-supporting gas, is not limited by the temperature of main combustion-supporting gas, and can ensure that the efficient gas igniter has long service life.

Description

Technical Field

[0001] The utility model relates to the field of industrial furnaces, in particular to a high-efficiency gas igniter. Background Art

[0002] The burner ignition gun currently used in the market has a relatively simple structure, generally an inner and outer outer tube structure, with fuel gas passing through the inner tube and combustion-supporting air passing through the outer tube, and generally an ignition ceramic rod is placed at the front end of the outer tube. Currently, this type of ignition gun has the following disadvantages: the ignition fuel and the ignition combustion-supporting air are not easy to mix evenly, the ignition success rate is affected by many factors, and the ignition flame is easily blown out by the ignition combustion-supporting air; if the combustion-supporting air is high temperature, the ignition power cord will directly contact the high-temperature combustion-supporting air, greatly reducing the life of the ignition power cord and posing a great safety hazard; if there is no combustion-supporting air, the ignition success rate is greatly reduced. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model proposes a high-efficiency gas igniter to solve the above-mentioned problems in the prior art.

[0004] The utility model provides a high-efficiency gas igniter, comprising:

[0005] Ignition and combustion-supporting air channel;

[0006] A gas combustion-supporting air mixing channel, one end of which is connected to one end of the ignition combustion-supporting air channel;

[0007] A gas channel, located at the periphery of the ignition and combustion-supporting air channel and the gas and combustion-supporting air mixing channel, and extending from the ignition and combustion-supporting air channel to the gas and combustion-supporting air mixing channel;

[0008] A gas nozzle is located in the channel wall of the gas-combustion-supporting-air mixing channel and connects the gas channel with the gas-combustion-supporting-air mixing channel;

[0009] The flame stabilizing shield is located in the gas combustion-supporting air mixing channel.

[0010] Optionally, it also includes a flame stabilizing shield bracket, one end of which is fixed to the inner wall of the gas-combustion-supporting-air mixing channel, and the other end is fixedly connected to the flame stabilizing shield.

[0011] Optionally, there are multiple flame-stabilizing shield supports, and the multiple flame-stabilizing shield supports are arranged at intervals along the circumference of the gas-supporting gas mixing channel.

[0012] Optionally, the flame stabilizing shield is in the shape of an inverted cone.

[0013] Optionally, the center line of the flame stabilizing shield, the center line of the gas channel, the center line of the ignition and combustion-supporting air channel, and the center line of the gas and combustion-supporting air mixing channel all coincide with each other.

[0014] Optionally, the injection direction of the gas nozzle in the axial direction forms an angle α with the central axis of the high-efficiency gas igniter, and the range of α is 15 to 90 degrees; the injection direction of the gas nozzle in the radial direction forms an angle β with the radial center line of the high-efficiency gas igniter, and the range of β is 5 to 60 degrees.

[0015] Optionally, the diameter of the ignition and combustion-supporting air channel is smaller than the diameter of the gas and combustion-supporting air mixing channel.

[0016] As described above, the high-efficiency gas igniter of the utility model has the following beneficial effects:

[0017] The high-efficiency gas igniter of the utility model can be in the form of self-aspiration, and can absorb air at room temperature as ignition-supporting combustion gas, and is not limited by the temperature of the main combustion gas, which can ensure that the high-efficiency gas igniter has a long service life;

[0018] The high-efficiency gas igniter of the utility model is provided with the flame-stabilizing shield in the ignition and combustion-supporting air channel. The flame-stabilizing shield can diffuse the flow of the ignition and combustion-supporting air to the surroundings, making it easier for the gas and the ignition and combustion-supporting air to mix, and forming a certain reflow zone at the front end of the shield to further stabilize the flame, thereby improving the success rate of ignition. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a longitudinal section view of the high-efficiency gas igniter of the utility model.

[0020] Figure 2 It is a top view of the high-efficiency gas igniter of the utility model.

[0021] Figure 3 and Figure 4 It is a schematic diagram of radial and axial angles of the gas nozzle in the high-efficiency gas igniter of the utility model.

[0022] Figure 5 The utility model is a schematic diagram of the gas flow in the high-efficiency gas igniter.

[0023] Component number description:

[0024] 1. gas channel, 2. gas nozzle, 3. ignition and combustion-supporting air channel, 41. flame-stabilizing shield, 42. flame-stabilizing shield bracket, 5. gas and combustion-supporting air mixing channel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The preferred embodiments described below are for example only, and those skilled in the art may think of other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0027] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0028] See also Figures 1 to 5 As shown, in this embodiment, a high-efficiency gas igniter is provided, and the high-efficiency gas igniter includes: an ignition and combustion-supporting air channel 3; a gas and combustion-supporting air mixing channel 5, one end of which is connected to one end of the ignition and combustion-supporting air channel 3; a gas channel 1, wherein the gas channel 1 is located at the periphery of the ignition and combustion-supporting air channel 3 and the gas and combustion-supporting air mixing channel 5, and extends from the ignition and combustion-supporting air channel 3 to the gas and combustion-supporting air mixing channel 5, that is, the gas channel is sheathed around the ignition and combustion-supporting air channel 3 and the gas and combustion-supporting air mixing channel 5; a gas nozzle 2, wherein the gas nozzle 2 is located in the channel wall of the gas and combustion-supporting air mixing channel 5, and connects the gas channel 3 with the gas and combustion-supporting air mixing channel 5; a flame-stabilizing shield 41, wherein the flame-stabilizing shield 41 is located in the gas and combustion-supporting air mixing channel 5.

[0029] Specifically, the downstream end face of the gas channel 1 (ie, the end face of the gas channel 1 adjacent to the gas-fuel-supporting-air mixing channel 5 ) can be sealed and welded to the outer wall of the gas-fuel-supporting-air mixing channel 5 .

[0030] Furthermore, the flame-stabilizing shield 41 can diffuse the flow of the ignition and combustion-supporting air to the surroundings, making it easier for the fuel gas and the ignition and combustion-supporting air to mix, thereby improving the ignition success rate, and forming a certain reflow zone at the front end of the flame-stabilizing shield 41 to further stabilize the flame, thereby improving the ignition success rate.

[0031] As an example, the high-efficiency gas igniter may further include a flame stabilizing shield bracket 42 , one end of which is fixed to the inner wall of the gas-combustion-supporting air mixing channel 5 , and the other end is fixedly connected to the flame stabilizing shield 41 .

[0032] Specifically, one end of the flame stabilizing shield support 42 can be fixedly welded to the inner wall of the gas-combustion-supporting-air mixing channel 5 .

[0033] As an example, there are multiple flame stabilizing shield supports 42 , and the multiple flame stabilizing shield supports 42 are arranged at intervals along the circumference of the gas-supporting gas mixing channel 5 .

[0034] Specifically, the number of the flame stabilizing shield brackets 42 can be determined according to actual needs. Preferably, in this embodiment, the number of the flame stabilizing shield brackets 42 is four. Of course, in other examples, the number of the flame stabilizing shield brackets 42 can also be three, five, six, seven or eight, etc.

[0035] More specifically, the flame stabilizing shield support 42 may be perpendicular to the inner wall of the gas-combustion-supporting-air mixing channel 5 .

[0036] As an example, the flame stabilizing shield 41 has an inverted cone shape. Specifically, the flame stabilizing shield 41 may have an inverted triangular cone shape or the like.

[0037] Specifically, the shape of the flame stabilizing shield 41 may be, but is not limited to, an inverted cone. Of course, in other examples, it may also be other shapes. Preferably, in this embodiment, the shape of the flame stabilizing shield 41 is an inverted cone.

[0038] As an example, the center line of the flame stabilizing shield 41, the center line of the gas channel 1, the center line of the ignition and combustion-supporting air channel 3, and the center line of the gas-fuel-fuel-fuel-air mixing channel 5 all coincide. It should be noted that the center lines here are all axial axis lines, that is, the center lines here are parallel to the extension direction of the gas channel 1, the extension direction of the ignition and combustion-supporting air channel 3, and the extension direction of the gas-fuel-fuel-fuel-air mixing channel 5.

[0039] As an example, the injection direction of the gas nozzle 2 is at an angle α with the central axis of the atmospheric ignition gun in the axial direction, and the range of α is 15 to 90 degrees. Figure 3As shown; the injection direction of the gas nozzle 2 is at an angle β to the radial center line of the atmospheric ignition gun in the radial direction, and the range of β is 5 to 60 degrees, such as Figure 4 shown.

[0040] Specifically, the angle between the injection direction of the gas nozzle 2 and the central axis of the ignition gun in the axial direction is α, and the value of α can be 30 degrees, 50 degrees, 70 degrees, 80 degrees, etc.; the angle between the injection direction of the gas nozzle 2 and the radial center line is β, and the value of β can be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, etc.

[0041] Furthermore, the gas nozzle 2 has rotation in the radial direction and the axial direction, and the gas is sprayed into the gas-fuel-air mixing channel 5 through the gas nozzle 2 to form a rotating upward airflow, and the rotating airflow has stability. The gas passes through the gas nozzle 2, converts potential energy into kinetic energy, and can induce ignition-fuel-air, and the ignition-fuel-air channel 3 has a large flow area and small resistance, and the amount of ignition-fuel-air that is induced can meet the ignition combustion. At the same time, the rotating upward injection of gas can enhance the mixing of gas and air, which is more conducive to successful ignition; specifically, the gas nozzle 2 has radial and axial rotation, and the gas is sprayed into the gas-fuel-air mixing channel 5 through the gas nozzle 2 to form a partially refluxed airflow to the flame-stabilizing shield 41 and partially rotate forward; the high-speed gas rotating airflow rotates forward while induced peripheral ignition-fuel-air to form a spiral forward gas-ignition-fuel-air mixture, which is fully mixed and can effectively ensure the ignition success rate; and the ignition-fuel-air channel 3 has a large flow area and a small resistance, and the induced ignition-fuel-air volume can meet the ignition combustion needs, such as Figure 5 shown.

[0042] As an example, the diameter of the ignition and combustion-supporting air channel 3 may be smaller than the diameter of the gas and combustion-supporting air mixing channel 5 .

[0043] The high-efficiency gas igniter of the utility model can absorb cold air from the atmosphere as ignition and combustion-supporting air by the injection of gas. The ignition ceramic needle can be a simple handheld type or a fixed ignition ceramic needle. The ignition needle ignition device is placed at the outlet of the gas and combustion-supporting air mixing channel, and there is no need to worry about the damage to the high-voltage wire caused by the high-temperature combustion-supporting air. In addition, the high-efficiency gas igniter of the utility model can be applied to gases of various calorific values ​​and is suitable for negative pressure furnaces. The high-efficiency gas igniter of the utility model can achieve a high ignition success rate, and because it is in the form of self-absorption, it can absorb air at room temperature as ignition and combustion-supporting gas, and is not limited by the temperature of the main combustion-supporting air.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high efficiency gas igniter, characterized in that: include: Ignition and combustion air channel; A gas combustion-supporting air mixing channel, one end of which is connected to one end of the ignition combustion-supporting air channel; A gas channel, located at the periphery of the ignition and combustion-supporting air channel and the gas and combustion-supporting air mixing channel, and extending from the ignition and combustion-supporting air channel to the gas and combustion-supporting air mixing channel; A gas nozzle is located in the channel wall of the gas-combustion-supporting-air mixing channel and connects the gas channel with the gas-combustion-supporting-air mixing channel; The flame stabilizing shield is located in the gas combustion-supporting air mixing channel.

2. The high-efficiency gas igniter according to claim 1, characterized in that: It also includes a flame stabilizing shield bracket, one end of which is fixed to the inner wall of the gas-combustion-supporting-air mixing channel, and the other end is fixedly connected to the flame stabilizing shield.

3. The high efficiency gas igniter according to claim 1, characterized in that: There are multiple flame stabilizing shield supports, and the multiple flame stabilizing shield supports are arranged at intervals along the circumference of the gas-supporting gas mixing channel.

4. The high efficiency gas igniter according to claim 1, characterized in that: The flame stabilizing shield is in the shape of an inverted cone.

5. The high efficiency gas igniter according to claim 1, characterized in that: The center line of the flame stabilizing shield, the center line of the gas channel, the center line of the ignition and combustion-supporting air channel, and the center line of the gas and combustion-supporting air mixing channel all coincide with each other.

6. The high-efficiency gas igniter according to claim 1, characterized in that: The injection direction of the gas nozzle in the axial direction forms an angle α with the central axis of the high-efficiency gas igniter, and the range of α is 15 to 90 degrees; the injection direction of the gas nozzle in the radial direction forms an angle β with the radial center line of the high-efficiency gas igniter, and the range of β is 5 to 60 degrees.

7. The high-efficiency gas igniter according to claim 1, characterized in that: The diameter of the ignition and combustion-supporting air channel is smaller than the diameter of the fuel gas and combustion-supporting air mixing channel.

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