Structural member for conveying fuel and furnace body
By combining the valve body, limiting components, elastic components, and top plug, the problem of fuel backflow in the fuel delivery system is solved, achieving a fuel delivery effect that is low-cost and easy to maintain.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-10
AI Technical Summary
The existing fuel delivery system in stoves has a problem of fuel backflow, which causes cavities in the pipes and affects the effective delivery during the next start-up. In addition, the traditional control valve increases the cost.
It adopts a combination structure of valve body, limiting component, elastic component and top plug, and utilizes the reset characteristic of elastic component to realize unidirectional flow of fuel, and simplifies component disassembly and installation through modular design.
It effectively prevents fuel backflow, reduces costs, and its modular design makes it easy to inspect, clean, and replace parts.
Smart Images
Figure CN223985202U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of furnace bodies, and in particular to a furnace body and a structural component for fuel conveying. Background Technology
[0002] A stove, as a cooking appliance, primarily functions to provide heat to cook food by burning fuel (such as vegetable oil). In modern stove designs, to more efficiently manage and utilize vegetable oil as fuel, pumps and pipes are typically used to deliver oil from a storage tank to the burners for combustion. Specifically, when heating is needed, the pump is activated, drawing fuel from the storage tank and delivering it through pipes to the burners, where it is ignited and burned to provide the heat required for cooking. However, when the pump is turned off, fuel may flow back from the burners into the storage tank. This creates cavities in the pipes, preventing efficient fuel delivery the next time the pump is restarted. Traditionally, this is addressed by installing sophisticated control valves on the pipes, which increases costs. Utility Model Content
[0003] Therefore, there is a need to provide a structural component and furnace body for fuel delivery, which aims to simplify the structure of the control valve and reduce costs.
[0004] To achieve the above objectives, the inventor provides a structural component for fuel delivery, comprising a valve body, a limiting member, an elastic member, and a top plug; the valve body has a chamber inside, one end of which is an inlet and the other end is an outlet, the inlet of which is used to connect to the output port of a pump, and the wall of the chamber has a first threaded area; the limiting member is located in the chamber and is threadedly connected to the first threaded area, the limiting member has a slot to communicate the inlet and outlet of the chamber, and the limiting member is used to limit the elastic member; one end of the elastic member is connected to the limiting member, and the elastic member is used to reset the top plug to close the inlet of the chamber; the top plug is located in the chamber, the top plug is connected to the other end of the elastic member, and the top plug is used to open or close the inlet of the chamber.
[0005] Furthermore, the end of the top plug near the inlet of the chamber is a conical head.
[0006] Furthermore, the inlet of the chamber near the top plug is a conical region, and the conical region has a sealing protrusion for contacting the conical head.
[0007] Furthermore: the elastic element is a helical spring, the top plug includes a body and a limiting protrusion, the limiting protrusion is located on the end of the body near the elastic element, the helical spring abuts against the end of the body near the helical spring, and the limiting protrusion limits the helical spring within the helical spring.
[0008] Furthermore, it also includes exhaust components;
[0009] The exhaust assembly is located at the outlet of the pump or the inlet of the chamber, or the exhaust assembly is located between the outlet of the pump and the inlet of the chamber, for discharging gas.
[0010] Furthermore: the exhaust assembly includes an exhaust channel and screws;
[0011] One end of the exhaust channel is an air inlet and the other end is an exhaust outlet. The exhaust channel has a threaded hole that matches the screw at a position between the air inlet and the exhaust outlet. The screw is threaded into the threaded hole and controls the opening or closing of the exhaust channel.
[0012] Furthermore: the air inlet of the exhaust channel is connected to the output port of the pump, the screw hole is located above the air inlet and is opposite to it, the screw can block the air inlet, and the exhaust hole is located to the side of the screw hole.
[0013] Furthermore, the pump's outlet wall has a second threaded area, and the valve body's inlet end is threadedly connected to the second threaded area.
[0014] Furthermore, it also includes an oil storage tank, which is connected to the pump inlet via a first pipe.
[0015] To achieve the above objectives, the inventors also provide a furnace body, including a burner head and a fuel delivery structure as described in any of the above embodiments; the burner head is connected to the outlet of the chamber of the structure via a second pipe.
[0016] Unlike existing technologies, the above technical solution has the following beneficial effects:
[0017] When the pump starts, it draws fuel oil (such as vegetable oil) from the reservoir and feeds it into the inlet of the chamber through the outlet. As the oil pressure increases, it overcomes the resistance of the elastic element, pushing the top plug away from the inlet, allowing the fuel to flow through the slots on the limiting element to the outlet and finally reach the burner head for combustion. Once the pump stops working, the oil pressure drops rapidly, the elastic element pushes the top plug back to its original position, moving it towards the inlet of the chamber, closing the inlet, preventing fuel backflow, and blocking the oil passage. This invention is inexpensive. Due to its modular design, individual components can be easily disassembled and reinstalled for inspection, cleaning, or replacement.
[0018] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description
[0019] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this utility model and other related contents, and should not be considered as limitations on this application.
[0020] Figure 1 This is a cross-sectional view of the fuel delivery structure in this embodiment;
[0021] Figure 2 This is a cross-sectional view of the top plug in this embodiment;
[0022] Figure 3 This is a cross-sectional view of the fuel delivery structure with a sealing protrusion in this embodiment;
[0023] Figure 4 This is a cross-sectional view of the fuel delivery structure, pump, and exhaust assembly in this embodiment;
[0024] Figure 5 This is a cross-sectional view of the fuel delivery structure, the first pipe, the second pipe, and the oil storage tank in this embodiment.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Structural components for fuel conveying;
[0027] 11. Valve body; 111. Inlet; 1111. Conical region; 1112. Sealing protrusion; 1113. Straight hole region; 112. Outlet; 113. First threaded region;
[0028] 12. Limiting components;
[0029] 13. Elastic components;
[0030] 14. Top plug; 141. Body; 142. Conical head; 143. Limiting protrusion;
[0031] 2. Pump; 21. Output port; 22. Input port; 23. Motor;
[0032] 3. Exhaust system;
[0033] 31. Exhaust passage; 311. Air intake port; 312. Exhaust port;
[0034] 32. Screws;
[0035] 4. First pipeline;
[0036] 5. Second pipeline;
[0037] 6. Oil storage tanks;
[0038] 7. Stove head. Detailed Implementation
[0039] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.
[0040] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.
[0041] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.
[0042] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.
[0043] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.
[0044] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.
[0045] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.
[0046] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0047] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0048] Please see Figures 1 to 5This embodiment provides a fuel delivery structural component 1, which can be connected to a pump 2. The pump 2 has an inlet 22 and an outlet 21. In some embodiments, the structural component 1 may also include the pump 2 as a complete device. The structural component 1 includes a valve body 11, a limiting member 12, an elastic member 13, and a top plug 14. The valve body 11 has a chamber inside, with one end being an inlet 111 and the other end being an outlet 112. The inlet 111 of the chamber is connected to the outlet 21 of the pump 2, and the wall of the chamber has a first threaded region 113. Figure 1 The first threaded area shown is an internal thread; the limiting member 12 is located in the chamber and is threadedly connected to the first threaded area 113. The limiting member 12 has a slot to connect the inlet 111 and outlet 112 of the chamber. The limiting member 12 is used to limit the elastic member 13; one end of the elastic member 13 is connected to the limiting member 12. The elastic member 13 is used to reset the top plug 14 to close the inlet 111 of the chamber; the top plug 14 is located in the chamber and is connected to the other end of the elastic member 13. The top plug 14 is used to open or close the inlet 111 of the chamber.
[0049] The installation steps for fuel conveying structural component 1 are as follows:
[0050] Install the top plug 14: Place the top plug 14 into the chamber of the valve body 11. The position of the top plug 14 should allow it to move freely to open or close the inlet 111 of the chamber, but at the same time ensure that it can tightly close the inlet 111 under the action of the elastic element 13 to prevent backflow.
[0051] Assemble the elastic element 13: Place the elastic element 13 in the chamber and make it contact the top plug 14.
[0052] Screw in the limiting member 12: Screw in the limiting member 12 into the chamber and adjust its position in the chamber, thereby changing the preload of the elastic member 13 and the force with which the top plug 14 closes the inlet 111.
[0053] The fuel delivery structure 1 is inexpensive. Due to its modular design, the individual components of the fuel delivery structure 1 can be easily disassembled and reinstalled if inspection, cleaning, or replacement is required.
[0054] The working principle of the fuel conveying structural components is as follows:
[0055] When pump 2 starts, it draws fuel oil (such as vegetable oil) from the storage tank 6 and inputs it through the outlet 21 into the inlet 111 of the chamber of the fuel delivery structure 1. As the oil pressure increases, it overcomes the resistance of the elastic element 13, pushing the top plug 14 away from the inlet 111, allowing the fuel to flow through the slot on the limiting element 12 to the outlet 112 and finally reach the burner head for combustion. Once pump 2 stops working, the oil pressure drops rapidly, the elastic element 13 pushes the top plug 14 back to its original position, moving towards the inlet 111 of the chamber, closing the inlet 111 of the chamber, and preventing fuel from flowing back into the storage tank 6.
[0056] Please see Figure 2 In this embodiment, the end of the top plug 14 near the inlet 111 of the chamber is a conical head 142, which can block the inlet 111 of the chamber.
[0057] Please see Figure 1 and Figure 2 In a further embodiment, the end of the chamber inlet 111 near the top plug 14 is a conical region 1111, and the conical head 142 is adapted to the conical region 1111. Optionally, the left side of the chamber inlet 111 is a conical region 1111, and the right side is a straight hole region 1113. The design of the conical region 1111 facilitates the smooth entry of the top plug 14, thereby blocking the straight hole region 1113 on the right side to achieve a sealing effect. Preferably, the chamber inlet 111 and the conical head 142 are tightly machined to fit together, and the top plug 14 can directly block the conical region 1111 to achieve a seal. When the pump 2 stops working, the oil pressure drops, and the elastic element 13 pushes the top plug 14 towards the chamber inlet 111, so that the conical head 142 of the top plug 14 is tightly embedded in the conical region 1111 of the chamber inlet 111 to prevent fuel backflow.
[0058] Please see Figure 3 In a further embodiment, the conical region 1111 has a sealing protrusion 1112, which is used to fully contact the conical head 142. The sealing protrusion 1112 can be metal or a high-temperature resistant, oil-resistant elastic material (such as polytetrafluoroethylene PTFE or certain rubber materials) and is fixed to the conical region 1111. Even if there are slight manufacturing errors in the conical region 1111 and the conical head 142 or wear after long-term use, the sealing protrusion 1112 can ensure sufficient sealing performance.
[0059] In a further embodiment, the conical head 142 may be provided with a sealing gasket that seals the gap between the conical head 142 and the inlet 111 of the chamber.
[0060] Unlike the design described above that uses a conical head 142, in some embodiments, the end of the top plug 14 near the chamber inlet can be designed as a ball head. To accommodate the ball head, the chamber inlet is designed as a spherical region. Alternatively, in some embodiments, the end of the top plug 14 near the chamber inlet can be designed as a flat surface, and the top plug 14 as a whole can be cylindrical. To accommodate the flat surface of the top plug 14, the chamber inlet is designed as a flat region.
[0061] In this embodiment, the slot in the middle of the limiting member 12 is a hexagonal hole. The hexagonal hole can be rotated using standard tools (such as a hex wrench or an Allen screwdriver), which makes it convenient for users to adjust the position of the limiting member during installation and debugging.
[0062] Please see Figure 1 In this embodiment, the elastic element 13 is a helical spring, which is made of metal wire (such as spring steel, stainless steel, alloy steel, etc.) wound into a spiral shape. The helical spring can effectively store elastic potential energy when compressed, and use this energy to drive the top plug 14 to reset when needed, ensuring the tight closure of the chamber inlet 111. In addition, the connection method between the helical spring, the limiting element 12, and the top plug 14 is flexible and versatile, supporting both simple assembly schemes that do not require fixed connections and more stable connections that can be achieved through appropriate fixing methods, meeting the specific requirements of various application scenarios.
[0063] Please see Figures 1 to 3 In this embodiment, the top plug 14 includes a body 141 and a limiting protrusion 143. The limiting protrusion 143 is located on the end of the body 141 near the elastic member 13. The coil spring abuts against the end of the body 141 near the coil spring, and the limiting protrusion 143 limits the coil spring within the coil spring. Specifically, the body 141 can be cylindrical, and the structure of the top plug 14, from the outlet 112 of the chamber to the inlet 111, consists of the limiting protrusion 143, the body 141, and the conical head 142, which can be integrally formed. The limiting protrusion 143 prevents the coil spring from bending excessively within the coil spring, ensuring that the coil spring maintains its correct shape during compression and reset.
[0064] Please see Figure 4 In this embodiment, the fuel delivery structure further includes an exhaust assembly 3; the exhaust assembly 3 is disposed at the output port of the pump 2 or the inlet 111 of the chamber, or the exhaust assembly 3 is disposed between the output port of the pump 2 and the inlet 111 of the chamber, for discharging gas. Figure 4 The diagram shows the structure of the exhaust assembly 3 mounted on the pump 2. When the fuel delivery system is running, gas may accumulate in the pump 2, fuel delivery structure 1, or pipelines due to incomplete or uneven liquid flow or residual air in the system. The exhaust assembly 3 removes the gas accumulated in the fuel delivery structure.
[0065] Please see Figure 4 In this embodiment, the exhaust assembly 3 includes an exhaust channel 31 and a screw 32. One end of the exhaust channel 31 is an air inlet 311, and the other end is an exhaust outlet 312. The exhaust channel 31 has a threaded hole adapted to the screw 32 at a position between the air inlet 311 and the exhaust outlet 312. The screw 32 is threadedly connected to the threaded hole and controls the opening or closing of the exhaust channel 31. The screw 32 controls the opening or closing of the exhaust channel 31 through its threaded connection with the threaded hole. Specifically, the screw 32 can either completely block the air inlet 311 to prevent gas from entering, or it can be slightly loosened to allow gas to pass through the air inlet 311 and the threaded hole, and finally be discharged from the exhaust outlet 312.
[0066] Please see Figure 4 In this embodiment, the air inlet 311 of the exhaust passage 31 is connected to the output port 21 of the pump 2. The screw hole is located above the air inlet 311 and is opposite to it. The screw 32 can block the air inlet 311, and the exhaust port 312 is located to the side of the screw hole. The screw is screwed deeper and deeper, extending into the air inlet and blocking the air inlet 311, thus blocking the exhaust passage 31.
[0067] In some embodiments, the exhaust assembly 3 may be an automated pressure relief valve, spaced apart from the pump 2 and the fuel delivery structure 1, and located on the second pipe 5.
[0068] Please see Figure 4 In this embodiment, the wall of the output port 21 of the pump 2 has a second threaded area, and the end of the valve body 11 where the inlet 111 is located is threadedly connected to the second threaded area. Figure 4 The second threaded area shown is an internal thread. During assembly, first align the inlet 111 end of the fuel delivery structure 1 with the outlet 21 of the pump 2, and then begin rotating the valve body 11. As it rotates, the internal thread inside the valve body 11 gradually engages with the second threaded area on the outlet 21 of the pump 2 until it is fully tightened. The threaded connection design makes the installation and disassembly process very simple.
[0069] Please see Figure 5 In this embodiment, the fuel delivery structure also includes an oil storage tank 6, which is connected to the inlet 22 of the pump 2 via the first pipe 4. The oil storage tank 6 is used to store vegetable oil or other liquid fuels.
[0070] In this embodiment, pump 2 drives an impeller or piston to rotate via motor 23 to extract and pressurize fuel. Motor 23 can be a stepper motor to achieve precise control of the fuel supply.
[0071] Please see Figure 5 This embodiment also provides a furnace body, including a burner head 7 and a fuel conveying structure as described in any of the above embodiments; the burner head is connected to the outlet 112 of the chamber via a second pipe 5.
[0072] When pump 2 starts, it draws vegetable oil from oil tank 6 and delivers it through first pipe 4 to pump 2's inlet 22, then through pump 2's outlet 21 into the chamber inlet 111 of fuel delivery structure 1. Under high pressure, top plug 14 moves towards chamber outlet 112, overcoming the resistance of elastic member 13 and opening chamber inlet 111. The slots in limiting member 12 connect the inlet 111 and outlet 112 on both sides, allowing vegetable oil to flow through the chamber and via second pipe 5 to the burner. The vegetable oil reaching the burner is ignited and burned, providing heat for cooking.
[0073] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.
Claims
1. A structural member for fuel delivery, characterized by, The valve body has a chamber inside, one end of the chamber is an inlet, the other end is an outlet, the inlet of the chamber is used to connect with the output port of the pump, the wall of the chamber has a first threaded area; the limiting piece is located in the chamber and is threadedly connected with the first threaded area, the limiting piece has a slot hole to connect the inlet and the outlet of the chamber, and the limiting piece is used to limit the elastic piece; one end of the elastic piece is connected with the limiting piece, the elastic piece is used to reset the top plug to close the inlet of the chamber; the top plug is located in the chamber and is connected with the other end of the elastic piece, and the top plug is used to open or close the inlet of the chamber.
2. The structural member for fuel delivery according to claim 1, characterized by: The end of the top plug close to the inlet of the chamber is a conical head.
3. The structural member for fuel delivery according to claim 2, characterized by: The end of the inlet of the chamber close to the top plug is a conical area, and the conical area has a ring of sealing protrusions, which are used to contact the conical head.
4. The structural member for fuel delivery of claim 1, wherein: The elastic piece is a spiral spring, the top plug includes a body and a limiting protrusion, the limiting protrusion is located on the end of the body close to the elastic piece, the spiral spring abuts against the end of the body close to the spiral spring, and the limiting protrusion limits the spiral spring in the spiral spring.
5. The fuel delivery structure according to any one of claims 1 to 4, characterized in that: The exhaust assembly is further included; The exhaust assembly is arranged on the output port of the pump or the inlet of the chamber, or the exhaust assembly is arranged between the output port of the pump and the inlet of the chamber, and is used to exhaust gas.
6. The structural member for fuel delivery according to claim 5, characterized by: The exhaust assembly includes an exhaust channel and a screw; One end of the exhaust channel is an air inlet hole, the other end is an exhaust hole, the exhaust channel has a screw hole adapted to the screw at a position between the air inlet hole and the exhaust hole, the screw is threadedly connected with the screw hole and controls opening or closing of the exhaust channel.
7. The structural member for fuel delivery according to claim 6, characterized by: The air inlet hole of the exhaust channel is communicated with the output port of the pump, the screw hole is located above the air inlet hole and opposite to the air inlet hole, the screw can block the air inlet hole, and the exhaust hole is located on the side of the screw hole.
8. The fuel delivery structure of any one of claims 1 to 4, wherein: The wall of the output port of the pump has a second threaded area, and the end of the inlet of the valve body is threadedly connected with the second threaded area.
9. The fuel delivery structure of any one of claims 1 to 4, wherein: The oil storage tank is further included, and the oil storage tank is connected with the input port of the pump through a first pipeline.
10. A furnace body characterised in that: The furnace head is connected with the chamber outlet of the structural member for fuel delivery through a second pipeline.