Oil-gas dual-purpose burner with common control

Abstract

The utility model provides a kind of oil-gas dual-purpose burner of oil-gas sharing control, including combustion head, combustion cylinder, cylinder base, gas device, oil device, regulation and control device;Combustion head is set the front side of combustion cylinder, and combustion head includes spray cylinder, gas nozzle and oil nozzle, and gas nozzle and oil nozzle are set in spray cylinder;Gas device includes gas main pipe, middle pipeline, several gas branch pipes;The lower portion of gas main pipe is equipped with gas valve, and oil device includes outer tube, inner tube, oil inlet pipe, oil return pipe, oil valve;Oil valve is set on oil return pipe;The utility model can use gas to burn, also can use oil to burn, realize oil-gas dual-purpose.The regulation and control device of the utility model can control the flame size of combustion head when burner uses gas to burn or uses oil to burn, realizes sharing control.

Description

Technical Field

[0001] This utility model relates to the field of burners, and in particular to a dual-purpose burner for both oil and gas with shared control. Background Technology

[0002] Burners are generally used to heat boilers by burning either natural gas or oil. Existing burners typically use only natural gas or only oil as fuel. In areas with unstable fuel supplies, relying on only one fuel is obviously a significant limitation. A shortage of either fuel will cause the burner to malfunction. If both oil and natural gas are integrated into a single burner, separate fuel regulators for controlling fuel flow and gas regulators for controlling natural gas flow are required, significantly increasing costs. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a dual-use burner with oil and gas co-control.

[0004] To achieve the above objectives, the technical solution of this utility model is: a dual-fuel burner with shared oil and gas control, comprising a burner head, a burner cylinder, a cylinder base, a gas device, a fuel device, and a control device;

[0005] The rear end of the combustion tube is mounted on the tube base, the combustion tube has a tube cavity inside, and the front end of the combustion tube has an air nozzle;

[0006] The burner head is located at the front of the combustion cylinder. The burner head includes a spray cylinder, a gas nozzle, and a fuel nozzle. The gas nozzle and the fuel nozzle are located inside the spray cylinder.

[0007] The gas appliance includes a main gas pipe, a central pipe, and several branch gas pipes. The upper end of the main gas pipe is located inside the combustion chamber. The central pipe passes through the combustion chamber and connects to the burner head. The branch gas pipes are located around the outer periphery of the central pipe, with their front ends extending forward from the air nozzles. The rear ends of both the branch gas pipes and the central pipe are connected to the main gas pipe. A gas valve is located at the lower part of the main gas pipe.

[0008] The fuel system includes an outer pipe, an inner pipe, an inlet pipe, a return pipe, and a fuel valve. The front end of the outer pipe is connected to the fuel injector, the inner pipe is located inside the outer pipe, and the front end of the inner pipe extends to the position of the fuel injector. The inlet pipe is connected to the outer pipe, the return pipe is connected to the inner pipe, and the fuel valve is located on the return pipe.

[0009] The control device includes a control motor and a control shaft. The control motor is connected to the control shaft and is used to drive the control shaft to rotate. The gas valve includes a first valve body and a first valve stem that can adjust the flow rate of the first valve body by rotation. The fuel valve includes a second valve body and a second valve stem that can adjust the flow rate of the second valve body by rotation. The control shaft is connected to the first valve stem and the second valve stem.

[0010] When using gas combustion, gas is supplied to the main gas pipe, and fuel supply to the fuel inlet pipe is stopped. After passing through the central pipe, the gas is ejected from the gas nozzle to create the inner flame, while gas is ejected from the front end of the gas branch pipe to form the outer flame. Air is ejected from the air nozzle at the front end of the combustion chamber to support the combustion of both the inner and outer flames. The control motor controls the rotation of the control shaft, which drives the first valve stem to rotate, thereby controlling the flow rate of gas through the gas valve to increase or decrease, and correspondingly controlling the size of the inner and outer flames.

[0011] When using fuel combustion, the main gas pipe stops supplying gas, and the fuel inlet pipe sends fuel into the outer pipe. The fuel flows through the outer pipe into the fuel injector, and part of the fuel is ejected from the fuel injector to form a fuel flame. Air is ejected from the air nozzle at the front of the combustion chamber to support the combustion of the fuel flame, while the other part of the fuel flows out from the inner pipe to the return fuel pipe. The regulating motor controls the rotation of the regulating shaft, which drives the second valve stem to rotate. This increases or decreases the fuel flow in the return fuel pipe, thereby affecting the fuel pressure at the fuel injector. The fuel pressure at the fuel injector affects the amount of fuel injected, and the fuel flame also changes size accordingly.

[0012] This invention can use either natural gas or fuel oil for combustion, achieving dual-use (gas and oil) combustion. The control device of this invention can regulate the flame size of the burner head whether the burner is using natural gas or fuel oil, enabling shared control.

[0013] Preferably, the front end of the combustion cylinder is provided with a reduced diameter section, the diameter of which gradually decreases from back to front. A compression sleeve is provided inside the cylinder cavity, the compression sleeve is located outside the gas branch pipe, and the front end of the compression sleeve is provided with a rectifier protrusion. The front side of the rectifier protrusion is provided with a first inclined surface facing forward and downward, and the rear side of the rectifier protrusion is provided with a second inclined surface facing backward and downward.

[0014] The cylinder base can be connected to a blower. The air from the blower is blown from the cylinder base into the cylinder cavity of the combustion cylinder, and finally ejected from the air nozzle at the front end of the combustion cylinder. The diameter of the air nozzle becomes smaller, and at the same time, the rectifier protrusion in the cylinder cavity further narrows the air passage in the cylinder cavity. The air is compressed and accelerated at the rectifier protrusion and ejected at high speed from the air nozzle.

[0015] Preferably, the first valve body has a vertical gas passage, the first valve stem passes laterally through the gas passage, and a valve plate is provided on the first valve stem within the gas passage. The second valve body has a valve cavity, and a valve core is provided within the valve cavity. The valve core is connected to a regulating shaft. Rotating the valve plate can open or close the gas passage. The valve core is a commonly used valve core for controlling fluid flow.

[0016] Preferably, the gas nozzle includes an outer shell and an inner cylinder. The inner cylinder is located in the middle of the outer shell, and the front end of the inner cylinder protrudes from the front end of the outer shell. The inner cylinder and the outer shell form a gas chamber. The rear end of the gas chamber is connected to the middle pipe. Gas holes are arranged in a ring on the outer wall of the gas nozzle, and the gas holes are connected to the gas chamber. The fuel nozzle is located inside the inner cylinder.

[0017] Preferably, the fuel injector includes an injector body and a push rod. The injector body has a fuel chamber, and the front end of the injector body has a fuel orifice communicating with the fuel chamber. The push rod is movable back and forth within the fuel chamber, with its front end positioned at the fuel orifice. Moving the push rod controls the size of the gap between the front end of the push rod and the fuel orifice, thereby controlling the amount of fuel injected from the fuel orifice.

[0018] By adopting the above technical solution, the beneficial effects of this utility model are: this utility model can use either natural gas or fuel oil for combustion, achieving dual-use (gas and oil). The control device of this utility model can control the flame size of the burner head whether the burner is using natural gas or fuel oil, achieving shared control. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the control device of this utility model;

[0022] Figure 4 This is a structural schematic diagram of the burner head position of this utility model;

[0023] Figure 5 This is a partial structural schematic diagram of the fuel device of this utility model.

[0024] Explanation of key figure labels:

[0025] Combustion head 1; Injector 11; Gas nozzle 12; Gas port 121; Fuel nozzle 13; Fuel port 131; Push rod 132; Gas main pipe 21; Gas branch pipe 22; Central pipe 23; Gas valve 24; First valve stem 241; Combustion cylinder 3; Air nozzle 31; Cylinder cavity 32; Reduced diameter section 33; Compression sleeve 34; Rectifying protrusion 341; Cylinder seat 4; Fuel device 5; Outer pipe 51; Inner pipe 52; Fuel inlet pipe 53; Fuel return pipe 54; Fuel valve 55; Second valve stem 551; Control motor 61; Control shaft 62. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1-5 As shown, this utility model discloses a dual-fuel burner with shared control of oil and gas, including a burner head 1, a burner cylinder 3, a cylinder base 4, a gas device, a fuel oil device 5, and a control device.

[0028] The rear end of the combustion cylinder 3 is mounted on the cylinder seat 4. The combustion cylinder 3 contains a cylinder cavity 32, and the front end of the combustion cylinder 3 has an air nozzle 31. The front end of the combustion cylinder 3 has a reduced diameter section 33, the diameter of which gradually decreases from rear to front. The air nozzle 31 is located at the front end of the reduced diameter section 33. A compression sleeve 34 is movable back and forth within the cylinder cavity 32. The compression sleeve 34 is located outside the gas branch pipe 22. The front end of the compression sleeve 34 has a rectifying protrusion 341. The front side of the rectifying protrusion 341 has a first downward-facing inclined surface, and the rear side of the rectifying protrusion 341 has a second downward-facing inclined surface. The cylinder seat 4 can be connected to a blower. The blower casing blows air into the cylinder cavity 32 through the cylinder seat 4. Under the combined compression of the reduced diameter section and the rectifying protrusion, the air velocity increases, and the accelerated air is ejected forward from the air nozzle 31.

[0029] The burner head 1 is positioned on the front side of the burner cylinder 3. For example... Figure 4 As shown, the combustion head 1 includes a spray nozzle 11, a gas nozzle 12, and a fuel nozzle 13, with the gas nozzle 12 and the fuel nozzle 13 disposed inside the spray nozzle 11.

[0030] The nozzle 11 is cylindrical, with its rear end facing the nozzle 31 and connected to the combustion chamber. A gas nozzle is located in the middle of the front end of the nozzle; a portion of the airflow ejected from the air nozzle 31 of the combustion chamber 3 is blown into the nozzle 11. The gas nozzle 12 includes an outer shell and an inner cylinder. The inner cylinder is located in the middle of the outer shell, with its front end protruding from the front end of the outer shell. A gas chamber is formed between the inner cylinder and the outer shell, and the rear end of the gas chamber is connected to a central pipe 23. Multiple gas holes 121 are arranged in a ring on the outer wall of the gas nozzle, and these gas holes 121 connect to the gas chamber. Gas enters the gas chamber through the central pipe 23 and is ejected from the gas holes 121 to form an inner flame.

[0031] The fuel nozzle 13 is located inside the inner cylinder. The fuel nozzle 13 includes a nozzle body and a push rod 132. The nozzle body has a fuel chamber, and its front end has a fuel hole 131 communicating with the fuel chamber. The push rod 132 is movable back and forth within the fuel chamber, with its front end positioned at the fuel hole 131. The fuel hole 131 is a conical hole. Moving the push rod 132 back and forth changes the distance between the front end of the push rod and the fuel hole 131, thereby changing the amount of fuel injected from the fuel hole into the fuel chamber.

[0032] like Figure 2 and Figure 4As shown, the gas device includes a main gas pipe 21, a central pipe 23, and several branch gas pipes 23. The upper end of the main gas pipe 21 is located inside the cylinder base 4. The central pipe 23 passes through the combustion cylinder 3 and connects to the burner head 1. Several branch gas pipes 22 are located around the central pipe 23. The front end of the branch gas pipes 22 extends from the air nozzle 31, and the rear end of both the branch gas pipes 22 and the rear end of the central pipe 23 are connected to the main gas pipe 21. A gas valve 24 is provided at the lower part of the main gas pipe 21. Gas can be supplied from the lower end of the main gas pipe 21. The gas valve 24 can control the gas flow rate in the main gas pipe 21. The gas in the main gas pipe 21 is distributed to the branch gas pipes 22 and the central pipe 23. The front end of the branch gas pipes 22 ejects gas to form an external flame, and the front end of the central pipe 23 sends gas into the gas nozzle 12 and ejects it to form an internal flame.

[0033] like Figure 4 and Figure 5 As shown, the fuel system includes an outer pipe 51, an inner pipe 52, an inlet pipe 53, a return pipe 54, and a fuel valve 55. The front end of the outer pipe 51 is connected to the fuel injector 12. The inner pipe 52 is located inside the outer pipe 51, with its front end extending to the position of the fuel injector 12. The inlet pipe 53 connects to the outer pipe 51, and the return pipe 54 connects to the inner pipe 52. The fuel valve 55 is located on the return pipe 54. Fuel is fed from the inlet pipe 53 into the outer pipe 51 and flows back into the inner pipe 52 at the fuel injector, finally flowing out from the return pipe 54. Fuel pressure is created in the fuel chamber of the fuel injector 13, driving fuel to be injected from the fuel orifice 131. The fuel valve 55 can adjust the fuel flow rate in the return pipe 54, thereby changing the pressure in the fuel chamber and thus changing the amount of fuel injected from the fuel orifice 131 per unit time.

[0034] like Figure 3 As shown, the control device includes a control motor 61 and a control shaft 62. The control motor 61 is connected to the control shaft 62 and is used to drive the control shaft 62 to rotate. The gas valve 24 includes a first valve body and a first valve stem 241 that can be rotated to adjust the flow rate of the first valve body. The first valve body has a vertical gas passage, and the first valve stem passes through the gas passage laterally. The first valve stem has a valve plate in the gas passage, and rotating the valve plate can control the flow rate of the intake manifold. The fuel valve 55 includes a second valve body and a second valve stem 551 that can be rotated to adjust the flow rate of the second valve body; the second valve body has a valve cavity, and the valve core is located in the valve cavity. The valve core is connected to the control shaft. The control shaft 62 is connected to the first valve stem 241 and the second valve stem 551.

[0035] When the burner uses natural gas for combustion, natural gas is supplied to the main gas pipe 21, while fuel oil is stopped from being supplied to the fuel inlet pipe 53. After passing through the central pipe 23, the natural gas is ejected from the gas nozzle 12 to generate an inner flame, and natural gas is ejected from the front end of the gas branch pipe 22 to form an outer flame. Accelerated air is ejected from the air nozzle at the front end of the combustion chamber to support the combustion of the inner and outer flames. The regulating motor 61 controls the rotation of the regulating shaft, which drives the first valve stem 241 to rotate, thereby controlling the flow rate of natural gas through the gas valve 24 to increase or decrease, and correspondingly controlling the size of the inner and outer flames.

[0036] When the burner uses fuel oil for combustion, the gas main pipe 21 stops supplying gas, and the fuel inlet pipe 53 sends fuel oil into the outer pipe. The fuel oil flows into the fuel nozzle through the outer pipe, and part of the fuel oil is sprayed out from the fuel nozzle 13 to form a fuel flame. The air nozzle at the front end of the combustion cylinder 3 sprays accelerated air to support the combustion of the fuel flame, while the other part of the fuel oil flows out from the inner pipe to the return oil pipe. The regulating motor 61 controls the regulating shaft 62 to rotate, which drives the second valve stem 551 to rotate. The fuel flow rate in the return oil pipe 54 increases or decreases, thereby affecting the fuel pressure at the fuel nozzle 13. The fuel pressure at the fuel nozzle affects the fuel spray volume of the fuel nozzle, and the fuel flame also becomes smaller or larger accordingly.

[0037] The above description is merely a preferred embodiment of the present utility model and does not limit the scope of implementation of the present utility model. All equivalent changes and modifications made in accordance with the scope of the patent application of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A dual-fuel burner with shared oil and gas control, characterized in that, Includes burner head, burner cylinder, cylinder base, gas device, fuel device, and control device; The rear end of the combustion tube is mounted on the tube base, the combustion tube has a tube cavity inside, and the front end of the combustion tube has an air nozzle; The burner head is located at the front of the combustion cylinder. The burner head includes a spray cylinder, a gas nozzle, and a fuel nozzle. The gas nozzle and the fuel nozzle are located inside the spray cylinder. The gas appliance includes a main gas pipe, a central pipe, and several branch gas pipes. The upper end of the main gas pipe is located inside the combustion chamber. The central pipe passes through the combustion chamber and connects to the burner head. The branch gas pipes are located around the outer periphery of the central pipe, with their front ends extending forward from the air nozzles. The rear ends of both the branch gas pipes and the central pipe are connected to the main gas pipe. A gas valve is located at the lower part of the main gas pipe. The fuel system includes an outer pipe, an inner pipe, an inlet pipe, a return pipe, and a fuel valve. The front end of the outer pipe is connected to the fuel injector, the inner pipe is located inside the outer pipe, and the front end of the inner pipe extends to the position of the fuel injector. The inlet pipe is connected to the outer pipe, the return pipe is connected to the inner pipe, and the fuel valve is located on the return pipe. The control device includes a control motor and a control shaft. The control motor is connected to the control shaft and is used to drive the control shaft to rotate. The gas valve includes a first valve body and a first valve stem that can adjust the flow rate of the first valve body by rotation. The fuel valve includes a second valve body and a second valve stem that can adjust the flow rate of the second valve body by rotation. The control shaft is connected to the first valve stem and the second valve stem.

2. The dual-fuel burner with shared oil and gas control according to claim 1, characterized in that, The front end of the combustion cylinder is provided with a reduced diameter section, the diameter of which gradually decreases from back to front. A compression sleeve is provided inside the cylinder cavity, located on the outside of the gas branch pipe. The front end of the compression sleeve is provided with a rectifier protrusion, the front side of which has a first inclined surface facing forward and downward, and the rear side of which has a second inclined surface facing backward and downward.

3. The dual-fuel burner with shared oil and gas control according to claim 1, characterized in that, The first valve body has a vertical gas passage, the first valve stem passes through the gas passage laterally, and the first valve stem has a valve plate inside the gas passage. The second valve body has a valve cavity, and the valve core is located inside the valve cavity. The valve core is connected to the control shaft.

4. The dual-fuel burner with shared oil and gas control according to claim 1, characterized in that, The gas nozzle includes an outer shell and an inner cylinder. The inner cylinder is located in the middle of the outer shell, and the front end of the inner cylinder protrudes from the front end of the outer shell. The inner cylinder and the outer shell form a gas chamber. The rear end of the gas chamber is connected to the middle pipe. Gas holes are arranged in a ring on the outer wall of the gas nozzle, and the gas holes are connected to the gas chamber. The fuel nozzle is located inside the inner cylinder.

5. A dual-fuel burner with shared oil and gas control according to claim 1, characterized in that, The fuel injector includes an injector body and a push rod. The injector body has a fuel chamber and a fuel hole at the front end that communicates with the fuel chamber. The push rod is movable back and forth within the fuel chamber, with its front end positioned at the fuel hole.

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