Fuel oil burner with automatic oil return function

Abstract

The utility model discloses a fuel oil burner with an automatic oil return function. The fuel oil burner comprises a furnace base, an injection pipe, an oil tank and an atomization assembly. The lower part of the furnace seat is connected with an injection pipe; the oil tank comprises an oil filling port, an oil outlet and an oil return port; the atomization assembly is connected with the fuel outlet through a pipeline, and fuel oil can be converted into mist from the liquid state and sent out towards the injection pipe. An injection port of the injection pipe is provided with an oil discharge port; and the oil discharge port is connected with the oil return port through a pipeline. According to the utility model, fuel oil at the oil discharge outlet can be automatically sucked and recycled into the oil tank to a certain extent, so that the air pressure in the oil tank is kept stable, and on one hand, higher negative pressure cannot be formed in the oil tank to cause waste of the fuel oil; and on the other hand, fuel oil flowing back from the injection pipe can be timely recycled into the oil tank for reuse, a fuel gas channel is not prone to being blocked, the fuel concentration at the injection pipe can be kept in a good value state, stable combustion is guaranteed, and the whole structure is simple and ingenious in connection and convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the field of oil burners, in particular to an oil burner with an automatic oil return function. Background Art

[0002] In addition to conventional gas combustion devices, there are also liquid fuel combustion devices on the market, such as mineral oils such as white oil. This liquid combustion device achieves combustion by atomizing and igniting the atomized gas. During the combustion process, the atomized white oil is easily liquefied into liquid fuel again and remains in the burner. A matching combustion structure needs to be set to ensure smooth combustion of white oil.

[0003] Existing liquid fuel combustion devices usually use fuel storage tanks. As the fuel is consumed, a certain negative pressure will be formed in the tank. When the negative pressure drops to a certain level, the fuel cannot be released. In the end, some of the fuel cannot be used and is wasted.

[0004] Moreover, during the use of the oil burner, the inner wall of the burner and the inner wall of the ejector tube will be attached with oil, which will generally be drained to the auxiliary oil tank through the oil drain pipe. If the oil drain pipe is blocked, the oil will block the atomized gas path, and the concentration of the mixed gas at the burner mouth will change, resulting in incomplete combustion, black smoke, carbon deposits at the burner mouth blocking the fire hole, and causing deflagration. In addition, the auxiliary oil tank needs to be recovered and cleaned, which is cumbersome and inconvenient to use. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a fuel burner with an automatic oil return function.

[0006] The technical solution adopted by an embodiment of the utility model to solve the technical problem is: a fuel burner with automatic oil return function, comprising: a furnace base, an ejector pipe, an oil tank and an atomization component;

[0007] The lower part of the furnace base is connected to the ejector pipe; the oil tank includes a refueling port, an oil outlet and an oil return port; the atomizing assembly is connected to the oil outlet through a pipeline, and can convert the fuel from liquid to mist and send it toward the ejector pipe; the ejector port of the ejector pipe is provided with an oil discharge port; the oil discharge port is connected to the oil return port through a pipeline.

[0008] Optionally, the atomization assembly includes an atomizer body and an atomizer mounting shell; the atomizer body is mounted on the atomizer mounting shell, and the atomizer mounting shell is detachably assembled on the injection port of the injection tube.

[0009] Optionally, the oil drain port is arranged below the atomizer mounting shell.

[0010] Optionally, an air inlet is provided on the top and / or side of the atomizer mounting shell.

[0011] Optionally, the atomizer mounting shell is provided with a plurality of ears spaced apart along the circumferential direction; the ears can be buckled on the injection port of the injection tube; and the air inlet is formed by the interval between two adjacent ears.

[0012] Optionally, the atomizer mounting shell includes a mounting inner shell and a mounting outer shell which are separately arranged; the mounting inner shell and the mounting outer shell are detachably mounted, and the atomizer body is press-fitted therebetween.

[0013] Optionally, the atomizer body is a flat atomizer sheet structure.

[0014] Optionally, the inner mounting shell and the outer mounting shell are made of plastic parts.

[0015] Optionally, the furnace base is funnel-shaped; the ejector tube includes an ejector connecting section and a Venturi ejector section; the ejector connecting section is connected to the bottom of the furnace base; the Venturi ejector section is tilted downward; the ejector connecting section and the Venturi ejector section have an arc-shaped transition.

[0016] Optionally, the oil outlet is located at the bottom end of the oil tank; the oil return port and the oil filling port are located above the oil tank; and the arrangement height of the oil outlet is higher than the arrangement height of the atomization assembly.

[0017] The beneficial effects of the utility model are as follows: after the fuel tank is filled with fuel, the fuel filling port can be closed; then the atomizing component can suck the fuel in the fuel tank from the oil outlet and transform it into mist through the pipeline and send it to the injection port of the injection tube for combustion. The mist fuel can flow downward to the oil discharge port after being attached to the furnace seat and the injection tube. When the amount of oil returned from the oil discharge port is small, the oil discharge port will not be blocked. At this time, the oil discharge port is connected with the oil return port of the fuel tank, and the outside air can be added to the fuel tank without forming a negative pressure, and it can be smoothly sucked to the atomizing component for atomization; when the amount of oil returned from the oil discharge port is large, the oil discharge port is blocked, and the oil return port cannot suck the outside air at this time, and a negative pressure will be formed in the fuel tank. When the negative pressure reaches a certain value, the fuel in the oil discharge port can be sucked and refluxed into the fuel tank, so that the oil discharge port is unobstructed again; so that the atomizing component can continue to smoothly suck the fuel in the fuel tank to work. According to the utility model, the fuel at the oil discharge port can be automatically sucked back into the fuel tank to a certain extent, so as to keep the gas pressure in the fuel tank stable. On the one hand, a high negative pressure will not be formed in the fuel tank, which will cause fuel waste. On the other hand, the fuel refluxed from the ejector pipe can be promptly recovered into the fuel tank for reuse, and is not easy to block the gas passage. The fuel concentration at the ejector pipe can be maintained at an optimal value, so as to ensure stable combustion. The overall structure has simple and ingenious connection and is easy to disassemble and assemble.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of the oil burner of the utility model;

[0021] Figure 2 for Figure 1 A cross-sectional view of the oil burner;

[0022] Figure 3 for Figure 2 A magnified schematic diagram of center A.

[0023] Description of main component symbols:

[0024] 10. Furnace base; 20. Ejector tube; 21. Ejector port; 22. Oil drain port; 23. Ejector connecting section; 24. Venturi ejector section; 30. Oil tank; 31. Oil filling port; 32. Oil outlet; 33. Oil return port; 40. Atomizer assembly; 41. Atomizer body; 42. Atomizer mounting shell; 421. Mounting inner shell; 422. Mounting outer shell; 43. Air inlet; 44. Ear. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0026] In the description of the present utility model, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore cannot be understood as a limitation on the present invention.

[0028] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0029] Example

[0030] Reference Figures 1 to 3 The utility model provides a fuel burner with automatic oil return function, comprising: a furnace base 10, an ejector pipe 20, an oil tank 30 and an atomizing assembly 40;

[0031] The furnace base 10 is connected to the ejector pipe 20 at the bottom; the oil tank 30 includes a refueling port 31, an oil outlet 32 ​​and an oil return port 33; the atomizing assembly 40 is connected to the oil outlet 32 ​​through a pipeline, and can convert the fuel from liquid to mist and send it toward the ejector pipe 20; the ejector port 21 of the ejector pipe 20 is provided with an oil discharge port 22; the oil discharge port 22 is connected to the oil return port 33 through a pipeline.

[0032] In the utility model, after the fuel tank 30 is filled with fuel, the fuel filling port 31 can be closed; then the atomizing assembly 40 can send the fuel in the fuel tank 30 through the pipeline from the fuel outlet 32 ​​to the injection port 21 of the injection pipe 20 for combustion. The atomized fuel can flow downward to the oil outlet 22 after being attached to the stove base 10 and the injection pipe 20. When the amount of oil returned from the oil drain port 22 is small, the oil drain port 22 will not be blocked. At this time, the oil drain port 22 is connected with the oil return port 33 of the fuel tank 30, and the outside air can be replenished into the fuel tank 30, and no negative pressure will be formed, and the fuel can be smoothly sucked into the atomizing component 40 for atomization; when the amount of oil returned from the oil drain port 22 is large, the oil drain port 22 is blocked. At this time, the oil return port 33 cannot suck the outside air, and a negative pressure will be formed in the fuel tank 30. When the negative pressure reaches a certain value, the fuel in the oil drain port 22 can be sucked and refluxed into the fuel tank 30, so that the oil drain port 22 is unobstructed again, so that the atomizing component 40 can continue to smoothly suck the fuel from the fuel tank 30 to work.

[0033] According to the utility model, the fuel at the oil discharge port 22 can be automatically sucked back into the fuel tank 30 to a certain extent, so as to keep the gas pressure in the fuel tank 30 stable. On the one hand, a high negative pressure will not be formed in the fuel tank 30, which will cause fuel waste. On the other hand, the fuel refluxed from the ejector pipe 20 can be promptly recovered into the fuel tank 30 for reuse, and is not easy to block the gas passage. The fuel concentration at the ejector pipe 20 can be maintained at an optimal value to ensure stable combustion. The overall structure is simple and ingenious in connection, and is easy to disassemble and assemble.

[0034] In this embodiment, the atomizer assembly 40 includes an atomizer body 41 and an atomizer mounting shell 42; the atomizer body 41 is mounted on the atomizer mounting shell 42, and the atomizer mounting shell 42 is detachably mounted on the injection port 21 of the injection tube 20. The atomizer mounting shell 42 can be used to conveniently install the atomizer body 41, and align the mist outlet of the atomizer with the injection port 21 of the injection tube 20.

[0035] Specifically, the oil discharge port 22 is arranged below the atomizer mounting shell 42. The oil discharge port 22 can be conveniently made in the atomizer mounting shell 42 made of plastic, and the liquid refluxed from the ejection tube 20 can be collected at the same time, and the product structure is simple and easy to implement.

[0036] In this embodiment, an air inlet 43 is provided above and / or on the side of the atomizer mounting shell 42. When the mist fuel formed by the atomizer body 41 is sprayed toward the ejection pipe 20, negative pressure can be formed and air is sucked out of the ejection port 21 of the ejection pipe 20 through the air inlet 43 for primary air intake.

[0037] Specifically, the atomizer mounting shell 42 is provided with a plurality of ears 44 at intervals along the circumferential direction; the ears 44 can be buckled on the injection port 21 of the injection tube 20; and the air inlet 43 is formed by two adjacent ears 44. The ears 44 structure arranged at intervals can be expanded and deformed to be inserted into the injection port 21, and the air inlet 43 structure can be formed by the intervals.

[0038] In some embodiments, the atomizer mounting shell 42 includes a mounting inner shell 421 and a mounting outer shell 422 which are separately arranged; the mounting inner shell 421 and the mounting outer shell 422 are detachably mounted, and the atomizer body 41 is pressed between the two. This facilitates the installation of the atomizer body 41 between the mounting inner shell 421 and the mounting outer shell 422, and the connection is simple and the sealing is good.

[0039] Specifically, the atomizer body 41 is a flat atomizing sheet structure. The flat atomizing sheet can be firmly pressed between the mounting inner shell 421 and the mounting outer shell 422. The atomizing sheet can be wrapped with a sealant to improve the sealing after pressing.

[0040] In this embodiment, the inner mounting shell 421 and the outer mounting shell 422 are made of plastic.

[0041] The atomizer assembly consists of inner and outer plastic parts and an atomizer chip. The atomizer chip is wrapped with sealant. An inverted structure allows the inner and outer plastic parts and the atomizer chip to be clamped together. The installation is easy, the separation is effortless, and the sealing is good.

[0042] In this embodiment, the furnace seat 10 is funnel-shaped; the ejector tube 20 includes an ejector connecting section 23 and a venturi ejector section 24; the ejector connecting section 23 is connected to the bottom of the furnace seat 10; the venturi ejector section 24 is tilted downward; the ejector connecting section 23 and the venturi ejector section 24 have an arc transition. The funnel-shaped furnace seat 10 can conveniently collect the fuel oil adhering to the inner cavity of the furnace seat 10, and sequentially flow downward through the ejector connecting section 23 and the venturi ejector section 24 to be discharged, thereby avoiding incomplete combustion of the fuel and carbon deposition in the fire hole. In addition, the venturi ejector section is tilted, and the ejector connecting section 23 and the venturi ejector section 24 are provided with an arc transition, so that the adhering fuel oil can be collected and flowed to the oil discharge port 22 of the ejector port 21 in a timely and smooth manner.

[0043] In this embodiment, the oil outlet 32 ​​is located at the bottom of the oil tank 30; the oil return port 33 and the refueling port 31 are located above the oil tank 30; the arrangement height of the oil outlet 32 ​​is higher than the arrangement height of the atomizing assembly 40. The arrangement height of the oil tank 30 and the oil outlet 32 ​​is higher than the arrangement height of the atomizing assembly 40 of the injection port 21, and the fuel in the oil tank 30 can automatically flow toward the atomizing assembly 40 under the action of gravity.

[0044] Of course, the present invention is not limited to the above-mentioned embodiments, and technicians familiar with the field may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A fuel burner with automatic oil return function, characterized in that: include: A furnace base (10), an ejector tube (20), an oil tank (30) and an atomizing assembly (40); The lower part of the furnace base (10) is connected to the ejector pipe (20); the oil tank (30) comprises a refueling port (31), an oil outlet (32) and an oil return port (33); the atomizing assembly (40) is connected to the oil outlet (32) via a pipeline, and can convert the fuel from a liquid state into an atomized state and send it toward the ejector pipe (20); the ejector port (21) of the ejector pipe (20) is provided with an oil discharge port (22); the oil discharge port (22) is connected to the oil return port (33) via a pipeline.

2. The oil burner with automatic oil return function according to claim 1 is characterized in that: The atomizer assembly (40) comprises an atomizer body (41) and an atomizer mounting shell (42); the atomizer body (41) is mounted on the atomizer mounting shell (42), and the atomizer mounting shell (42) is detachably mounted on the injection port (21) of the injection tube (20).

3. The oil burner with automatic oil return function according to claim 2 is characterized in that: The oil discharge port (22) is arranged below the atomizer mounting shell (42).

4. The oil burner with automatic oil return function according to claim 2 is characterized in that: An air inlet (43) is provided on the top and / or the side of the atomizer mounting shell (42).

5. The oil burner with automatic oil return function according to claim 4 is characterized in that: The atomizer mounting shell (42) is provided with a plurality of ears (44) spaced apart along the circumferential direction; the ears (44) can be buckled on the injection port (21) of the injection tube (20); and the air inlet (43) is formed by spacing two adjacent ears (44).

6. The oil burner with automatic oil return function according to claim 2, characterized in that: The atomizer mounting shell (42) comprises a mounting inner shell (421) and a mounting outer shell (422) which are separately arranged; the mounting inner shell (421) and the mounting outer shell (422) are detachably mounted, and the atomizer body (41) is pressed between the two.

7. The oil burner with automatic oil return function according to claim 6, characterized in that: The atomizer body (41) is a flat atomizer sheet structure.

8. The oil burner with automatic oil return function according to claim 6, characterized in that: The inner mounting shell (421) and the outer mounting shell (422) are made of plastic parts.

9. The oil burner with automatic oil return function according to claim 1, characterized in that: The furnace base (10) is funnel-shaped; the ejector tube (20) comprises an ejector connecting section (23) and a Venturi ejector section (24); the ejector connecting section (23) is connected to the bottom of the furnace base (10); the Venturi ejector section (24) is arranged to be inclined downward; and the ejector connecting section (23) and the Venturi ejector section (24) have an arc-shaped transition.

10. The oil burner with automatic oil return function according to claim 1, characterized in that: The oil outlet (32) is located at the bottom end of the oil tank (30); the oil return port (33) and the oil filling port (31) are located above the oil tank (30); and the arrangement height of the oil outlet (32) is higher than the arrangement height of the atomization assembly (40).

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