Plant oil fuel stove
By using a pump-free design and an air-cooled structure, the vegetable oil-fired stove solves the problems of fuel splashing and heat adjustment, achieving safe and efficient heating in dining establishments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN WANG KITCHEN KITCHENWARE CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-06-26
AI Technical Summary
Existing fuel stoves require a fuel pump to deliver fuel during use, which causes fuel pressure changes and fuel splashing. Furthermore, it is difficult to adjust the flame intensity, making them unsuitable for use in food service establishments.
Adopting an oil pump-free design, the oil box, heat insulation components, and air-cooling layer structure inside the stove shell, combined with the adjustment and blowing components, achieve natural fuel delivery and firepower adjustment, avoid fuel splashing, and carry away heat through the air-cooling layer and blowing components, concentrating heat to heat the cookware.
It can be used normally without an oil pump, adjusts the firepower and avoids fuel splashing, is suitable for food service establishments, and improves heating efficiency and safety.
Smart Images

Figure CN224415204U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fuel stove technology, and in particular to a vegetable oil fuel stove. Background Technology
[0002] As a cooking appliance, fuel-fired stoves have the advantages of being easy to operate, low noise, stable heat, no oil splattering, and strong heat. When using existing fuel-fired stoves, the fuel is usually ignited by a burner at the bottom, and then the flame is blown upward by a high-speed fan to heat the bottom of the pot.
[0003] According to utility model patent CN216693643U, a novel vegetable oil stove structure includes a stove platform. An outer protective frame arranged in a circular array is fixedly installed on the top of the stove platform, and a pot rack is fixedly installed at the top of the outer protective frame. A stove core is installed at the center of the pot rack, and a fuel pipe is connected to the bottom of the stove core. An installation cavity is provided inside the stove platform, and a vegetable oil fuel tank slides within the installation cavity. One side of the vegetable oil fuel tank extends outside the installation cavity. In this novel vegetable oil stove structure, after the stove is turned off, pulling the outer puller outwards causes the adjusting strip to slide within the installation cavity. The aligning teeth on the strip drive the threaded cylinder to rotate through the ring teeth, causing the sealing slip ring to slide upwards within the threaded cylinder until the sealing slip ring disengages from the connecting pipe. Then, pulling the vegetable oil fuel tank outwards allows for the addition of vegetable oil. The operation is very simple and suitable for various fast-heating food service establishments.
[0004] Although the above technical solution can achieve rapid replacement of vegetable oil fuel and adjustment of fire intensity, it still requires a fuel pump to deliver fuel in actual use. Furthermore, due to the setting of its throttling mechanism, the pressure of the fuel delivered by the fuel pump remains unchanged. The throttling mechanism will cause the fuel pressure at the top of the fuel pipe to increase, resulting in fuel splashing. Therefore, it is not suitable for use in catering establishments. Utility Model Content
[0005] The purpose of this invention is to provide a vegetable oil fuel stove that can be used normally without the need for a fuel pump, and the flame intensity can be adjusted during use. It also prevents fuel splashing due to pressure changes during use, making it suitable for use in food service establishments.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0007] A vegetable oil stove includes a stove shell with an open top. An oil box is provided at the bottom of the inner wall of the stove shell. A gap is left between the outer wall of the oil box and the inner wall of the stove shell. A fixing ring is provided at the upper end of the outer wall of the oil box. Several through holes communicating with the stove shell are opened downward through the upper edge of the outer wall of the fixing ring. Several through grooves are opened inward at the lower part of the outer wall of the stove shell. An oil filling pipe is provided at the upper end of the outer wall of the oil box. Multiple connecting pipes are provided at equal intervals and communicating with the oil filling pipe at the upper end of the outer wall of the oil box. An oil core is provided in each connecting pipe, extending out of its open end and its lower end extending to the bottom of the inner wall of the oil box. Each oil core can slide in the corresponding connecting pipe to adjust its length extending out of the upper opening of the corresponding connecting pipe.
[0008] A heat insulation component, which is higher in the middle and lower on both sides, is installed above the oil box inside the stove shell. The upper end of the outer wall of the heat insulation component is recessed downward to form a combustion chamber. The space between the heat insulation component and the oil box forms an air-cooling layer. The oil injection pipe and each connecting pipe extend into the combustion chamber. A countersunk hole is opened at the bottom of the inner wall of the combustion chamber along the edge of the oil injection pipe. The countersunk hole is detachably connected to a sealing plug for sealing the upper opening of the oil injection pipe. An adjustment component for adjusting the firepower is installed at the upper end of the heat insulation component.
[0009] By adopting the above technical solution, when using the device, first place it in a suitable position, then remove the sealing plug in the countersunk hole, add an appropriate amount of vegetable fuel to the oil box through the oil injection pipe, then restore the sealing plug to its initial state, and wait for the oil core to deliver the vegetable oil to its top. Then the oil core can be ignited, and its heat will be concentrated in the combustion chamber. Then the cookware can be placed on the stove shell for use. During use, most of the heat generated will be blocked by the heat insulation component, preventing the heat from spreading to the oil box. The air-cooling layer will allow the residual heat to spread into the air, preventing the heat generated during use from contacting the oil box. During use, the contact area between the outside air and the combustion chamber can be controlled by adjusting the component, thereby controlling the size of the combustion flame.
[0010] A further feature of this invention is that the heat insulation component includes a connecting ring, a U-shaped connecting cover disposed on and communicating with the upper end of the connecting ring, and a heat insulation layer disposed in conjunction with the inner wall of the connecting cover and the bottom of the connecting ring.
[0011] By adopting the above technical solution, not only can the heat from the combustion of the oil core be concentrated in one area to improve heating efficiency, but it can also prevent the heat from being directly conducted to the oil box during use, thus avoiding the temperature rise inside the oil box.
[0012] A further feature of this invention is that the adjusting assembly includes a support ring, fixed shafts disposed on the left and right sides of the upper end of the support ring, and partitions rotatably connected to the outer wall of the fixed shafts and arranged in an arc shape. Each partition has a gear of half its size that meshes with each other on its inner wall behind the fixed shaft. An L-shaped operating rod is provided on one side of the support ring corresponding to the rear of the upper end of the outer wall of the partition. The two partitions cooperate to form a circle.
[0013] By adopting the above technical solution, not only can the firepower be adjusted by controlling the contact area between the outside air and the combustion chamber, but the two baffles can also rotate synchronously, improving the convenience of adjusting the firepower.
[0014] A further feature of this invention is that a retaining ring is provided between the upper edge of the fixing ring and the bottom edge of the heat insulation component, the retaining ring enclosing the air-cooling layer into a closed space, and a blower component that communicates with both the air-cooling layer and the oil box is provided on one side of the outer wall of the stove shell.
[0015] A further feature of this invention is that the blower assembly includes a fixed housing, a fan installed inside the fixed housing, a three-way pipe communicating with the air outlet of the fan, and a control panel installed on one side of the outer wall of the fixed housing. One end of the three-way pipe is connected to the retaining ring, and the other end is equipped with a one-way valve communicating with it.
[0016] By adopting the above technical solution, not only can the heat on the oil injection pipe and connecting pipe be carried away by the air cooling layer during use, preventing heat transfer to the oil box, but also the air force can be allowed to enter the oil box and flow upward along the connecting pipe to promote the combustion of the oil core.
[0017] A further feature of this invention is that a diffuser assembly is provided at the lower end of the outer wall of the other end of the three-way pipe below its open end, the diffuser assembly including a connecting frame and a diffuser plate disposed at the lower end of the connecting frame.
[0018] By adopting the above technical solution, the airflow inside the three-way pipe can be prevented from blowing directly into the oil box, thus avoiding splashing of the oil and allowing the airflow inside the oil box to be more evenly distributed.
[0019] In summary, this utility model has the following beneficial effects:
[0020] Firstly, this utility model can be used normally without the need for an oil pump to deliver fuel, and the flame intensity can be adjusted during use. There will be no fuel splashing due to pressure changes during use, making it suitable for use in catering establishments.
[0021] Secondly, the heat insulation component of this utility model not only allows the heat from combustion to be concentrated on heating the cookware, but also prevents the heat generated by combustion from being transferred to the oil box during long-term use, thus avoiding the temperature rise of the oil box.
[0022] Thirdly, the baffle ring and air blowing assembly of this utility model can not only remove the heat on the oil injection pipe and connecting pipe through the air cooling layer during use, thus preventing the heat from being transferred to the oil box, but also promote the combustion of the oil core by allowing air to enter the oil box and flow upward along the connecting pipe. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 It is mainly used to show the positional connection relationship of each component;
[0025] Figure 3 It is mainly used to display the oil injection pipe and sealing plug;
[0026] Figure 4 This is a schematic diagram of the structure of the adjustment component of this utility model;
[0027] Figure 5 Primarily used to display retaining rings and countersunk holes;
[0028] Figure 6 This is a structural schematic diagram of the blower assembly of this utility model.
[0029] In the diagram: 1. Stove shell; 11. Oil box; 12. Fixing ring; 13. Through hole; 14. Through groove; 2. Oil filling pipe; 21. Connecting pipe; 22. Oil core; 3. Heat insulation component; 31. Connecting ring; 32. Connecting cover; 33. Heat insulation layer; 34. Combustion chamber; 35. Countersunk hole; 36. Sealing plug; 37. Air cooling layer; 4. Adjustment component; 41. Support ring; 42. Fixing shaft; 43. Partition; 44. Gear; 45. Operating lever; 5. Baffle ring; 51. Blowering component; 52. Fixing shell; 53. Fan; 54. T-pipe; 55. Control panel; 6. One-way valve; 61. Air diffuser component; 62. Connecting bracket; 63. Air diffuser. Detailed Implementation
[0030] The present invention will be further described in detail below with reference to the accompanying drawings.
[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.
[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0034] Example 1, Reference Figure 1-4 A vegetable oil fuel stove includes a stove shell 1 with an open top. An oil box 11 is provided at the bottom of the inner wall of the stove shell 1. A gap is left between the outer wall of the oil box 11 and the inner wall of the stove shell 1. A fixing ring 12 is provided at the upper end of the outer wall of the oil box 11. Several through holes 13 are provided downward through the upper edge of the outer wall of the fixing ring 12, communicating with the lower space of the stove shell 1. Several through grooves 14 are provided inward at equal intervals at the lower part of the outer wall of the stove shell 1. An oil injection pipe 2 is provided at the upper end of the outer wall of the oil box 11 and communicates with it. Several connecting pipes 21 are provided at equal intervals at the edge of the oil injection pipe 2 at the upper end of the outer wall of the oil box 11 and communicate with it. An oil core 22 is provided in each connecting pipe 21, extending out of its open end and its lower end extending to the bottom of the inner wall of the oil box 11. Each oil core 22 can slide in the corresponding connecting pipe 21 to adjust its length extending out of the upper opening of the corresponding connecting pipe 21.
[0035] Inside the stove shell 1, above the oil box 11, there is a heat insulation component 3 that is higher in the middle and lower on both sides. The heat insulation component 3 includes a connecting ring 31, a U-shaped connecting cover 32 that is located on the upper end of the connecting ring 31 and communicates with it, and a heat insulation layer 33 that is fitted on the inner wall of the connecting cover 32 and the bottom of the connecting ring 31. The upper end of the outer wall of the connecting cover 32 is recessed downward to form a combustion chamber 34. The space between the heat insulation component 3 and the oil box 11 forms an air-cooling layer 37. The oil injection pipe 2 and each connecting pipe 21 extend into the combustion chamber 34. At the bottom of the inner wall of the combustion chamber 34, a countersunk hole 35 is opened downward at the edge of the oil injection pipe 2. The countersunk hole 35 is detachably connected to a sealing plug 36 that cooperates with it to seal the upper opening of the oil injection pipe 2.
[0036] The upper end of the heat insulation component 3 is equipped with an adjustment component 4 for adjusting its firepower. The adjustment component 4 includes a support ring 41, fixed shafts 42 disposed on the left and right sides of the upper end of the support ring 41, and partitions 43 that are rotatably connected to the outer wall of the fixed shafts 42 and are arranged in an arc shape. Each partition 43 has a gear 44 that is half the size and meshes with each other behind the fixed shafts 42 on its inner wall. An L-shaped operating rod 45 is provided on one side of the support ring 41 behind the upper end of the outer wall of the partition 43. The two partitions 43 are arranged in a circle. The upper end of the operating rod 45 extends out of the corresponding side of the outer wall of the stove shell 1. A heat insulation sleeve is fitted on the upper end of the outer wall of the operating rod 45.
[0037] Instructions for use: When using, first place the device in a suitable position, then remove the sealing plug 36 in the countersunk hole 35, add appropriate amount of vegetable fuel to the oil box 11 through the oil injection pipe 2, then restore the sealing plug 36 to its initial state, and wait for the oil core 22 to deliver the vegetable oil to its uppermost end. Adjust the length of the oil core 22 extending from the upper opening of the corresponding connecting pipe 21 as appropriate, and then ignite the oil core 22. Its heat will be concentrated in the combustion chamber 34 on the connecting cover 32. Then place the pot on the stove shell 1 for use. During use, most of the heat generated will be blocked by the heat insulation layer 33 on the connecting ring 31, preventing the heat from spreading to the oil box 11.
[0038] The air-cooled layer 37 allows residual heat to diffuse into the air, preventing the heat generated during use from contacting the oil box 11. At the same time, the cooperation between the through groove 14 and the through hole 13 allows air to circulate between the air-cooled layers 37. During use, the contact area between the outside air and the combustion chamber 34 can be controlled by adjusting the component 4, thereby controlling the size of the combustion flame. The corresponding baffle 43 can be rotated outward around the fixed axis 42 by the operating lever 45. Since the two baffles 43 are meshed by the gear 44, when one baffle 43 rotates, the other baffle 43 will also rotate synchronously with it, which is convenient for adjustment.
[0039] Example 2, Reference Figure 5-6 The difference from Embodiment 1 is that it also includes the following:
[0040] A retaining ring 5 is provided between the upper edge of the fixing ring 12 and the bottom edge of the heat insulation component 3. The retaining ring 5 encloses the open air-cooling layer 37 into a closed space and communicates with the outside through the cooperation of the through hole 13 and the through groove 14. A blower component 51 is provided on one side of the outer wall of the stove shell 1, which is connected to both the air-cooling layer 37 and the oil box 11.
[0041] Furthermore, the blower assembly 51 includes a fixed housing 52, a fan 53 installed inside the fixed housing 52, a three-way pipe 54 connected to the air outlet of the fan 53, and a control panel 55 installed on one side of the outer wall of the fixed housing 52. One end of the three-way pipe 54 is connected to the retaining ring 5, and the other end extends into the oil box 11 and is equipped with a one-way valve 6 connected to it. Several air inlets are opened on one side of the outer wall of the fixed housing 52.
[0042] Furthermore, a diffuser assembly 61 is provided at the lower end of the outer wall of the other end of the pipe below its opening end. The diffuser assembly 61 includes a connecting frame 62 and a diffuser blade 63 that is fitted to the lower end of the connecting frame 62.
[0043] In this embodiment, the control panel 55 on the fixed housing 52 is used to operate the fan 53. The open air-cooled layer 37 is sealed by the retaining ring 5, and the fan 53 allows outside air to enter the air-cooled layer 37 to remove the residual heat from the oil injection pipe 2 and the connecting pipe 21. The air entering the air-cooled layer 37 flows to the outside through the through hole 13 and through groove 14 on the fixed ring 12, allowing the air to circulate continuously. At the same time, the air generated by the fan 53 can also enter the oil box 11. Since the other end of the three-way pipe 54 is provided with a one-way valve... Valve 6 prevents vegetable oil from flowing back into the three-way pipe 54. The air entering the oil box 11 will not come into direct contact with the vegetable oil under the action of the air diffuser 61, thus preventing fuel from splashing in the oil box 11. The air blown towards the air diffuser 63 on the connecting bracket 62 allows the air to fill the space of the oil box 11 more gently and flow upward along the connecting pipe 21, thereby promoting combustion. In addition, the oil core 22 and the connecting pipe 21 can slide, so it will not affect the normal flow of air along the connecting pipe 21.
[0044] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that make creative contributions as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A vegetable oil cooking stove, comprising a stove shell (1) with an opening at the top, characterized in that: An oil box (11) is provided at the bottom of the inner wall of the stove shell (1). A gap is left between the outer wall of the oil box (11) and the inner wall of the stove shell (1). A fixing ring (12) is provided at the upper end of the outer wall of the oil box (11) to cooperate with it. Several through holes (13) communicating with the stove shell (1) are opened downward through the upper edge of the outer wall of the fixing ring (12). Several through grooves (14) are opened inward at the lower part of the outer wall of the stove shell (1). The upper part of the outer wall of the oil box (11) is provided inward. An oil injection pipe (2) is provided at the end of the oil box (11) and connected to it. Multiple connecting pipes (21) are provided at equal intervals and connected to the oil injection pipe (2) at the upper end of the outer wall of the oil box (11). Each connecting pipe (21) is provided with an oil core (22) that extends out of its opening end and its lower end extends to the bottom of the inner wall of the oil box (11). Each oil core (22) can slide in the corresponding connecting pipe (21) to adjust its length extending out of the opening at the upper end of the corresponding connecting pipe (21). The stove shell (1) is fitted with a heat insulation component (3) that is high in the middle and low on both sides above the oil box (11). The upper end of the outer wall of the heat insulation component (3) is recessed downward to form a combustion chamber (34). The space between the heat insulation component (3) and the oil box (11) forms a cooling layer (37). The oil injection pipe (2) and each connecting pipe (21) extend into the combustion chamber (34). The bottom of the inner wall of the combustion chamber (34) is provided with a countersunk hole (35) at the edge of the oil injection pipe (2). The countersunk hole (35) is detachably connected to a sealing plug (36) that is used to seal the upper opening of the oil injection pipe (2). The upper end of the heat insulation component (3) is fitted with an adjustment component (4) for adjusting its firepower.
2. The vegetable oil fuel stove according to claim 1, characterized in that: The heat insulation component (3) includes a connecting ring (31), a U-shaped connecting cover (32) disposed on the upper end of the connecting ring (31) and communicating with it, and a heat insulation layer (33) disposed in conjunction with the inner wall of the connecting cover (32) and the bottom of the connecting ring (31).
3. A vegetable oil fuel stove according to claim 1, characterized in that: The adjustment assembly (4) includes a support ring (41), fixed shafts (42) disposed on the left and right sides of the upper end of the support ring (41), and partitions (43) rotatably connected to the outer wall of the fixed shafts (42) and arranged in an arc shape. Each partition (43) has a gear (44) of half the size that meshes with each other on the inner wall behind the fixed shaft (42). An operating rod (45) in an L-shape is disposed on one side of the support ring (41) corresponding to the rear of the upper end of the outer wall of the partition (43). The two partitions (43) are arranged in a circle.
4. A vegetable oil fuel stove according to claim 1, characterized in that: A retaining ring (5) is provided between the upper edge of the fixing ring (12) and the bottom edge of the heat insulation component (3). The retaining ring (5) encloses the air-cooled layer (37) into a closed space. A blower component (51) is provided on one side of the outer wall of the stove shell (1), which is connected to both the air-cooled layer (37) and the oil box (11).
5. A vegetable oil fuel stove according to claim 4, characterized in that: The blower assembly (51) includes a fixed housing (52), a fan (53) installed in the fixed housing (52), a three-way pipe (54) connected to the air outlet of the fan (53), and a control panel (55) installed on one side of the outer wall of the fixed housing (52). One end of the three-way pipe (54) is connected to the retaining ring (5), and the other end is equipped with a one-way valve (6) connected to it.
6. A vegetable oil fuel stove according to claim 5, characterized in that: A diffuser assembly (61) is provided at the lower end of the outer wall of the other end of the three-way pipe (54) below its opening end. The diffuser assembly (61) includes a connecting frame (62) and a diffuser plate (63) that is disposed at the lower end of the connecting frame (62).