Infrared radiation burner capable of preventing hot air from flowing backwards

Abstract

The utility model discloses an infrared radiation burner capable of preventing hot air from flowing backwards, which relates to the technical field of burner equipment and comprises a casing, a natural gas pipe, an ignition component, a control component and a burning cylinder, the inside of the casing is divided into a burning chamber, a fan chamber and a control chamber, and the natural gas pipe penetrates through the control chamber and extends into the burning chamber. The ignition assembly extends into the combustion chamber, and the control assembly is located in the control chamber and connected with the ignition assembly. A one-way valve is arranged between the fan chamber and the combustion chamber and circulates in the direction from the fan chamber to the combustion chamber, a centrifugal fan is arranged on the inner wall of the fan chamber, the axis of the centrifugal fan is perpendicular to the axis of the combustion cylinder, and a shaft fan is arranged at the top of the fan chamber. The air quantity and the air pressure of the shaft type fan are used for flushing hot air flow which flows back to the burner from the drying tunnel, and the hot air flow is prevented from flowing back to the burner to damage the burner.

Description

Technical Field

[0001] The utility model relates to the technical field of burner equipment, in particular to an infrared radiation burner for preventing backflow of hot air. Background Technique

[0002] The combustion equipment that provides heat energy to the infrared radiation pipeline is called an infrared radiation burner. Compared with general natural gas combustion equipment, the infrared radiation burner requires a larger air volume and air pressure to operate normally. Mainly because the fan of the infrared radiation burner needs to balance the air resistance brought by the infrared radiation pipeline with a length of more than ten meters.

[0003] It is found in practice that when multiple infrared radiation burners are used in the same drying tunnel, if one of them is shut down according to requirements while the other burners are not shut down, it will cause the hot air of the shut-down infrared radiation burner to flow back from the infrared radiation pipe into the infrared radiation burner, resulting in damage to the infrared radiation burner due to high temperature or condensate water.

[0004] Currently, the common solutions to prevent the backflow of hot air into the burner are to add a one-way valve and completely isolate the burner control system from the combustion area. However, the actual measured effects have not met the expectations. Therefore, there is an urgent need for an infrared radiation burner that can effectively prevent the backflow of hot air. Contents of the Utility Model

[0005] The purpose of the utility model is to provide an infrared radiation burner for preventing backflow of hot air to solve the problems in the background technique.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] An infrared radiation burner for preventing backflow of hot air includes a housing, a natural gas pipe, an ignition component, a control component, and a combustion cylinder. The interior of the housing is divided into a combustion chamber, a fan chamber, and a control chamber. The combustion chamber is located on one side of the fan chamber and the control chamber. The fan chamber is located above the control chamber. The natural gas pipe passes through the control chamber and extends into the combustion chamber. The combustion cylinder is located at one end of the natural gas pipe and passes through the combustion chamber. The part of the natural gas pipe located in the combustion chamber is provided with round holes, and the round holes are arranged in a circumferential array outside the natural gas pipe. The ignition component extends into the combustion chamber, and the control component is located in the control chamber and is connected to the ignition component;

[0008] A one-way valve is provided between the fan chamber and the combustion chamber, and the one-way valve flows in the direction from the fan chamber to the combustion chamber. The inner wall of the fan chamber is provided with a centrifugal fan, and the axis of the centrifugal fan is perpendicular to the axis of the combustion cylinder. An axial fan is provided at the top of the fan chamber.

[0009] Furthermore, an air filter element is provided outside the axial fan, and the air filter element is detachably connected to the axial fan.

[0010] Further, a sealing ring is provided at the part where the natural gas pipe passes through the control room and the combustion chamber, and a seal is provided at the part where the combustion cylinder passes through the combustion chamber.

[0011] Further, a handle is provided at the top of the outer shell.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1) The air volume and air pressure of the shaft-type fan are used to counteract the hot air flow that backflows from the drying channel into the burner, preventing the hot air flow from flowing back into the burner and damaging the burner. At the same time, since the air pressure of the shaft-type fan itself is small, the air flow generated by it cannot blow into the drying channel, avoiding additional cooling and gas consumption in the drying channel.

[0014] 2) Air passes through the air filter element and the shaft-type fan and enters the fan chamber, then enters the combustion chamber through the one-way valve, and is mixed with gas and burned through the round holes, improving the combustion effect. At the same time, the high-temperature hot gas after combustion enters the infrared radiation tube and provides heat for the infrared radiation tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of an infrared radiation burner for preventing hot air backflow according to the present utility model;

[0016] Figure 2 is a perspective view of an infrared radiation burner for preventing hot air backflow according to the present utility model after removing the air filter element;

[0017] In the figure, 1 - outer shell, 11 - fan chamber, 12 - control room, 13 - combustion chamber, 14 - one-way valve, 15 - handle, 2 - natural gas pipe, 21 - round hole, 3 - control component, 4 - combustion cylinder, 5 - centrifugal fan, 6 - shaft-type fan, 7 - air filter element. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0019] Refer to Figure 1 - Figure 2 , the present utility model provides a technical solution:

[0020] As Figure 1 - Figure 2As shown in the figure, an anti-backflow infrared radiation burner includes a housing 1, a natural gas pipe 2, an ignition assembly, a control assembly 3, and a combustion cylinder 4. The interior of the housing 1 is partitioned into a combustion chamber 13, a fan chamber 11, and a control chamber 12. The combustion chamber 13 is located on one side of the fan chamber 11 and the control chamber 12. The fan chamber 11 is located above the control chamber 12. The natural gas pipe 2 passes through the control chamber 12 and extends into the combustion chamber 13. The combustion cylinder 4 is located at one end of the natural gas pipe 2 and passes through the combustion chamber 13. The part of the natural gas pipe 2 located in the combustion chamber 13 is provided with round holes 21, and the round holes 21 are circumferentially arrayed outside the natural gas pipe 2. The ignition assembly extends into the combustion chamber 13, and the control assembly 3 is located in the control chamber 12 and is connected to the ignition assembly;

[0021] A one-way valve 14 is provided between the fan chamber 11 and the combustion chamber 13, and the one-way valve 14 flows in the direction from the fan chamber 11 to the combustion chamber 13. A centrifugal fan 5 is provided on the inner wall of the fan chamber 11, and the axis of the centrifugal fan 5 is perpendicular to the axis of the combustion cylinder 4. An axial fan 6 is provided at the top of the fan chamber 11.

[0022] Through the above technical solution, when the burner is operating normally, natural gas is introduced into the natural gas pipe 2, and the control assembly 3 controls the ignition assembly. At this time, a combustion reaction occurs in the combustion cylinder 4. At this time, the centrifugal fan 5 is started, and the axial fan 6 is not started. At this time, air passes through the axial fan 6 from the air filter 7 and enters the fan chamber 11, and then enters the combustion chamber 13 through the one-way valve 14; since the part of the natural gas pipe 2 located in the combustion chamber 13 is provided with round holes 21, the air is mixed with the gas through the round holes 21 for combustion, improving the combustion effect. At the same time, the high-temperature hot gas generated by combustion enters the infrared radiation tube to provide heat for the infrared radiation tube.

[0023] When the burner is on standby, the axial fan 6 is started to use the air volume and air pressure of the axial fan 6 to counteract the hot air flow that is backflowed into the burner from the drying channel, avoiding the backflow of the hot air flow into the burner and damaging the burner. At the same time, since the air pressure of the axial fan 6 itself is small, the air flow generated by it cannot blow into the drying channel either, avoiding additional cooling and gas consumption in the drying channel.

[0024] The centrifugal fan 5 adopted in this embodiment has the characteristic of large air pressure and is used when the burner is working normally. Compared with the centrifugal fan 5 of the same power, the axial fan 6 has the characteristics of large air volume and low air pressure and is used when the burner is on standby.

[0025] Furthermore, an air filter 7 is provided outside the axial fan 6, and the air filter 7 is detachably connected to the axial fan 6.

[0026] Through the above technical solution, impurities and moisture in the air can be filtered as much as possible, improving the purity of the air and the effect of the combustion reaction with the gas.

[0027] Furthermore, a sealing ring is provided at the part where the natural gas pipe 2 passes through the control room 12 and the combustion chamber 13, and a seal is provided at the part where the combustion cylinder 4 passes through the combustion chamber 13.

[0028] Through the above technical solution, by sealing the control room 12 and the combustion chamber 13, the electrical components in the control room 12 are prevented from being affected.

[0029] Furthermore, a handle 15 is provided at the top of the housing 1.

[0030] Through the above technical solution, the provision of the handle 15 facilitates the movement of the burner and improves portability.

[0031] The above are only the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in the relevant field. And the changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the protection scope of the appended claims of the present invention.

Claims

1. An anti-backflow infrared radiation burner for hot air, comprising a housing (1), a natural gas pipe (2), an ignition assembly, a control assembly (3) and a combustion cylinder (4), characterized in that: The interior of the outer shell (1) is partitioned into a combustion chamber (13), a blower chamber (11), and a control chamber (12). The combustion chamber (13) is located on one side of the blower chamber (11) and the control chamber (12). The blower chamber (11) is located above the control chamber (12). The natural gas pipe (2) passes through the control chamber (12) and extends into the combustion chamber (13). The combustion cylinder (4) is located at one end of the natural gas pipe (2) and passes through the combustion chamber (13). Circular holes (21) are provided in the portion of the natural gas pipe (2) located in the combustion chamber (13). The circular holes (21) are circumferentially arrayed outside the natural gas pipe (2). The ignition assembly extends into the combustion chamber (13). The control assembly (3) is located in the control chamber (12) and is connected to the ignition assembly; A one-way valve (14) is provided between the blower chamber (11) and the combustion chamber (13). The one-way valve (14) allows flow in the direction from the blower chamber (11) to the combustion chamber (13). A centrifugal blower (5) is provided on the inner wall of the blower chamber (11). The axis of the centrifugal blower (5) is perpendicular to the axis of the combustion cylinder (4). An axial blower (6) is provided at the top of the blower chamber (11).

2. The anti-backflow infrared radiation burner according to claim 1, characterized in that: An air filter element (7) is provided outside the axial blower (6). The air filter element (7) is detachably connected to the axial blower (6).

3. The anti-backflow infrared radiation burner according to claim 1, characterized in that: Sealing rings are provided at the portions where the natural gas pipe (2) passes through the control chamber (12) and the combustion chamber (13). Sealing members are provided at the portions where the combustion cylinder (4) passes through the combustion chamber (13).

4. The anti-backflow infrared radiation burner according to claim 1, characterized in that: A handle (15) is provided at the top of the outer shell (1).

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