Air return type combustor

Abstract

The utility model relates to the field of combustor equipment, and discloses an air return type combustor which comprises a supporting base, a combustion chamber is fixedly connected to the top of the supporting base, a connecting air box is fixedly connected to one side of the combustion chamber, a combustor is fixedly connected to the other side of the connecting air box, and a combustor body is fixedly connected into the combustor. Air blowers are fixedly connected to the two sides of the combustor, the air blowers are fixedly connected to the side, away from the combustion chamber, of the connecting air bellow, a connecting plate is fixedly connected to the lower side face of the combustor, a combustor controller is fixedly connected to the connecting plate, and an air return device shell is fixed to the other side of the combustion chamber. The air return type combustor is arranged on the side, away from the combustion chamber, of the air return device shell and recovers and utilizes waste gas generated in the combustion process, airflow distribution in the combustion chamber can be optimized through the air return type combustor, flames are more stable and uniform, and the combustion efficiency and the energy utilization rate are improved.

Description

Technical Field

[0001] The utility model relates to the field of burner equipment, in particular to a return air burner. Background Art

[0002] Burner is a general term for a device that sprays fuel and air in a certain way for mixed combustion. Burners are divided into industrial burners, civil burners and special burners according to their types and application fields. Among them, industrial burners are mainly fuel oil and gas. According to the combustion control method of the burner, they can be divided into single-stage burners, double-stage burners and proportional regulation burners. The function of the burner is to increase the temperature of the heated object through flame combustion. It is widely used and plays an important role in various fields.

[0003] Traditional burners often have problems such as incomplete fuel combustion, uneven flame distribution and low combustion efficiency during the combustion process, which not only wastes energy, but also may produce a large amount of harmful emissions and have a negative impact on the environment. For this reason, we propose a return air burner. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a return air burner to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a return air burner, comprising a support base, a combustion chamber is fixedly connected to the top of the support base, a connecting bellows is fixedly connected to one side of the combustion chamber, a burner is fixedly connected to the other side of the connecting bellows, a burner body is fixedly connected to the burner, blowers are fixedly connected to both sides of the burner, the blower is fixedly connected to the side of the connecting bellows away from the combustion chamber for providing air to the combustion chamber, a connecting plate is fixedly connected to the lower side of the burner, a burner controller is fixedly connected to the connecting plate, a return air device housing is fixed to the other side of the combustion chamber, and further comprising:

[0008] The return air device is arranged on a side of the return air device housing away from the combustion chamber, and is used to collect and recycle the exhaust gas generated by the combustion.

[0009] Preferably, the burner is a ratio-regulating burner capable of adjusting the mixing ratio of fuel and air according to the rotation angle of the burner controller.

[0010] Preferably, a gas pipe is connected to one side of the burner controller close to the burner, and a gas connecting pipe is connected to the other side for accessing an external gas supply device, and the other end of the gas pipe is fixedly connected to the burner body.

[0011] Preferably, the return air device includes a return air chamber, an air outlet and an exhaust fan. The return air device shell is in a comma shape. The lower end opening of the return air device shell is set as an air outlet. The return air chamber is fixedly connected to the side of the return air device shell away from the combustion chamber, and the exhaust fan is fixedly connected in the return air chamber.

[0012] Preferably, a return air duct 1 is fixedly connected to the side of the return air chamber away from the combustion chamber, and the other end of the return air duct 1 passes through the two sides of the support base and is fixedly connected to the bottom of the combustion chamber. A return air duct 2 is fixedly connected to the front side of the return air chamber, and the other end of the return air duct 2 is fixedly connected to the upper end of the side of the combustion chamber.

[0013] Preferably, the return air device also includes guide air vanes, and a plurality of guide air vanes arranged equidistantly in a ring are fixedly connected to one end of the inner wall of the combustion chamber close to the burner, the guide air vanes are fan-blade-shaped, and the end of the guide air vanes away from the burner is in a pointed shape.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a return air burner, which has the following beneficial effects:

[0016] 1. This type of return air burner recycles and utilizes the waste gas generated during the combustion process through the return air device, realizes the secondary utilization of energy, effectively improves the combustion efficiency and energy utilization rate, not only reduces energy consumption, but also reduces the emission of harmful substances. This type of return air burner can optimize the air flow distribution in the combustion chamber through the design of the guide air vane, making the flame more stable and uniform, which not only improves the combustion efficiency, but also enhances the safety of the combustion process and reduces the risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the housing of the return air device of the utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the combustion chamber of the utility model;

[0020] Figure 4 It is a schematic diagram of the air guide vane of the utility model.

[0021] In the figure: 1. Support base; 2. Combustion chamber; 3. Connecting bellows; 4. Burner; 5. Blower; 6. Connecting plate; 7. Burner controller; 8. Burner body; 9. Return air device housing; 10. Return air chamber; 11. Air outlet; 12. Exhaust fan; 13. Return air duct 1; 14. Return air duct 2; 15. Guide air vane; 16. Return air device. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-4 A return air burner comprises a support base 1, a combustion chamber 2 is fixedly connected to the top of the support base 1, a connecting wind box 3 is fixedly connected to one side of the combustion chamber 2, a burner 4 is fixedly connected to the other side of the connecting wind box 3, a burner body 8 is fixedly connected to the burner 4, a blower 5 is fixedly connected to both sides of the burner 4, the blower 5 is fixedly connected to the side of the connecting wind box 3 away from the combustion chamber 2, and is used to provide air to the combustion chamber 2, a connecting plate 6 is fixedly connected to the lower side of the burner 4, a burner controller 7 is fixedly connected to the connecting plate 6, a return air device housing 9 is fixed to the other side of the combustion chamber 2, and also comprises:

[0024] The return air device 16 is arranged on a side of the return air device housing 9 away from the combustion chamber 2, and is used to collect and recycle the exhaust gas generated by the combustion.

[0025] Furthermore, the burner 4 is a ratio-regulating burner, which can adjust the mixing ratio of fuel and air according to the rotation angle of the burner controller 7 .

[0026] Furthermore, a gas pipe is connected to one side of the burner controller 7 close to the burner 4 , and a gas connecting pipe is connected to the other side for connecting to an external gas supply device. The other end of the gas pipe is fixedly connected to the burner body 8 .

[0027] Furthermore, the return air device 16 includes a return air chamber 10, an air outlet 11 and an exhaust fan 12. The return air device shell 9 is in a comma shape. The lower end opening of the return air device shell 9 is set as the air outlet 11. The return air chamber 10 is fixedly connected to the side of the return air device shell 9 away from the combustion chamber 2, and the exhaust fan 12 is fixedly connected in the return air chamber 10.

[0028] Furthermore, a return air duct 13 is fixedly connected to the side of the return air chamber 10 away from the combustion chamber 2, and the other end of the return air duct 13 passes through the two sides of the support base 1 and is fixedly connected to the bottom of the combustion chamber 2. A return air duct 2 14 is fixedly connected to the front side of the return air chamber 10, and the other end of the return air duct 2 14 is fixedly connected to the upper end of the side of the combustion chamber 2.

[0029] Furthermore, the return air device 16 also includes a guide air vane 15. A plurality of guide air vanes 15 arranged equidistantly in a ring are fixedly connected to one end of the inner wall of the combustion chamber 2 close to the burner 4. The guide air vanes 15 are fan-shaped, and the end of the guide air vane 15 away from the burner 4 is in a pointed shape.

[0030] Working principle: When using this device, first control the mixing ratio of fuel and air by rotating the burner controller 7, then start the blower 5, send the air into the combustion chamber 2 through the bellows 3, and at the same time, the fuel enters the burner body 8 through the gas pipeline and mixes with the air in the burner 4. When the mixture of fuel and air is ignited in the combustion chamber 2, a flame will be generated for combustion. At this time, the exhaust gas generated by the combustion is collected by the return air device 16. Specifically, the exhaust gas is discharged from the return air chamber 10 through the return air pipe under the action of the exhaust fan 12. The waste gas is guided back into the combustion chamber 2 by the return air duct 1 13 and the return air duct 2 14 and re-enters the combustion chamber 2 for secondary combustion. During the combustion process, a plurality of guide air vanes 15 arranged equidistantly in a ring shape are provided on the inner wall of the combustion chamber 2, which will cause the incoming wind and fuel to generate a rotating airflow after combustion. Not only is the airflow distribution more uniform, the combustion efficiency and flame stability are improved, but also the waste gas can be more easily introduced into the return air duct 1 13 and the return air duct 2 14, which effectively improves the combustion efficiency and energy utilization rate, reduces not only the energy consumption but also the emission of harmful substances.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A return air burner, comprising a support base (1), characterized in that: The top of the support base (1) is fixedly connected to a combustion chamber (2); one side of the combustion chamber (2) is fixedly connected to a connecting bellows (3); the other side of the connecting bellows (3) is fixedly connected to a burner (4); a burner body (8) is fixedly connected to the burner (4); both sides of the burner (4) are fixedly connected to a blower (5); the blower (5) is fixedly connected to a side of the connecting bellows (3) away from the combustion chamber (2) for providing air to the combustion chamber (2); a connecting plate (6) is fixedly connected to the lower side of the burner (4); a burner controller (7) is fixedly connected to the connecting plate (6); a return air device housing (9) is fixedly connected to the other side of the combustion chamber (2); and further comprises: The return air device (16) is arranged on a side of the return air device housing (9) away from the combustion chamber (2) and is used to collect and recycle the exhaust gas generated by the combustion.

2. A return air burner according to claim 1, characterized in that: The burner (4) is a ratio-adjustable burner capable of adjusting the mixing ratio of fuel and air according to the rotation angle of the burner controller (7).

3. A return air burner according to claim 1, characterized in that: The burner controller (7) is connected to a gas pipe on one side close to the burner (4), and is connected to a gas connection pipe on the other side for connecting to an external gas supply device. The other end of the gas pipe is fixedly connected to the burner body (8).

4. A return air burner according to claim 1, characterized in that: The return air device (16) comprises a return air chamber (10), an air outlet (11) and an exhaust fan (12); the return air device housing (9) is comma-shaped; the lower end opening of the return air device housing (9) is arranged as the air outlet (11); the return air chamber (10) is fixedly connected to the side of the return air device housing (9) away from the combustion chamber (2); and the exhaust fan (12) is fixedly connected to the return air chamber (10).

5. A return air burner according to claim 4, characterized in that: A return air duct one (13) is fixedly connected to the side of the return air chamber (10) away from the combustion chamber (2), and the other end of the return air duct one (13) passes through the two sides of the support base (1) and is fixedly connected to the bottom of the combustion chamber (2). A return air duct two (14) is fixedly connected to the front side of the return air chamber (10), and the other end of the return air duct two (14) is fixedly connected to the upper end of the side of the combustion chamber (2).

6. A return air burner according to claim 4, characterized in that: The return air device (16) further comprises a guide air vane (15); a plurality of guide air vanes (15) arranged equidistantly in a ring shape are fixedly connected to one end of the inner wall of the combustion chamber (2) close to the burner (4); the guide air vanes (15) are fan-shaped; and the end of the guide air vane (15) away from the burner (4) is in a pointed shape.

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