Heating oil drum for cooking

Abstract

An oil pipe is communicated with an oil tank, the oil tank is provided with an inner cavity, the inner cavity is used for containing edible oil, the oil pipe is provided with an inlet and an outlet, the edible oil enters the oil pipe from the inlet and flows out from the outlet, and a heating unit is connected with the oil tank and used for heating the edible oil in the oil tank. The bidirectional suction unit is communicated with the oil pipe, the bidirectional suction unit has a first suction direction and a second suction direction which are opposite in suction direction, any one of the suction directions is used for pumping edible oil out of the oil pipe outlet from the inner cavity of the oil tank, and the other suction direction is used for pumping the edible oil in the oil pipe back into the inner cavity of the oil tank. When oil does not flow out of the oil pipe, residual edible oil in the oil pipe is pumped back into the inner cavity of the oil tank, so that the edible oil cannot be solidified in the oil pipe to block the oil pipe. Compared with the prior art, the heating oil barrel for cooking disclosed by the utility model can avoid the blockage caused by solidification of edible oil in the oil pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking robots, in particular to a heating oil barrel for cooking. Background Art

[0002] The cooking robot is a modern technology product, a new generation of microcomputer-controlled intelligent cooking equipment, no smoke, no radiation, fuel-saving and power-saving, automatic stir-frying. The cooking machine also has multifunctional cooking robots such as automatic stir-frying, frying, and stewing. It is convenient and simple to operate. Only through the intelligent human-computer interaction system, you can stay away from the harm of kitchen fumes and easily enjoy delicious food, realizing the automation and fun of the cooking process. It can also be suitable for families, school canteens, corporate canteens, military canteens and cooked food processing industries according to different cooking robot models.

[0003] A heated oil drum is an oil storage device used to store cooking oil and spray the cooking oil into the pot through an oil pipe. Since cooking oils such as lard have a high solidification point and exist in a solid state at room temperature, and some cooking oils will also solidify into a solid at low room temperature, the solidified cooking oil needs to be heated before it can be sprayed into the pot normally.

[0004] In the prior art, after the edible oil is sprayed normally, residual edible oil still exists in the oil pipe outside the heating oil barrel, and the heating rod in the oil barrel cannot heat the edible oil in the oil pipe. Therefore, when the edible oil solidifies, it will cause blockage of the oil pipe, making it impossible to spray the edible oil normally. Utility Model Content

[0005] In order to solve the defect that the oil pipe is blocked due to solidification of cooking oil, thus affecting the spraying of the cooking oil, the utility model provides a heating oil barrel for cooking.

[0006] The technical solution adopted by the utility model is a heating oil drum for cooking, comprising:

[0007] An oil pipe having an inlet and an outlet connected to each other, wherein the inlet is connected to an inner cavity of the oil tank;

[0008] A heating unit is connected to the oil tank;

[0009] The bidirectional suction unit is connected to the oil pipe and has a first suction direction and a second suction direction which are opposite to each other.

[0010] Preferably, the bidirectional suction unit is a bidirectional pump;

[0011] Alternatively, the bidirectional suction unit includes a first oil pump operating in a first suction direction and a second oil pump operating in a second suction direction.

[0012] Preferably, the inlet is connected to the inner cavity of the oil tank through the filter unit.

[0013] Preferably, a mesh plate is provided in the oil tank, a gap is provided between the mesh plate and the bottom of the oil tank, and the filter unit is arranged above the mesh plate.

[0014] Preferably, the oil pipe and / or the two-way suction unit located outside the oil tank is wrapped with a heating belt.

[0015] Preferably, the heating unit comprises a first heating part and a second heating part, and the first heating part and the second heating part are respectively located in two planes that are not parallel to each other.

[0016] Preferably, the heating unit is a heating tube, the middle of the heating tube forms an S-shaped first heating portion, and the two ends of the heating tube form the second heating portions.

[0017] Preferably, the oil tank is connected to a residual material warning unit, and when the oil in the oil tank is reduced to a specified threshold, the residual material warning unit sends a warning signal.

[0018] Preferably, the residual material warning unit includes a buoyancy block, a sliding rod and an alarm, the sliding rod is connected to the bottom of the oil tank, the buoyancy block is connected to the sliding rod without driving, and when the buoyancy block is lower than a specified threshold, the alarm sends a warning signal.

[0019] Preferably, the outer cover of the oil tank is provided with an outer shell, and a space is provided between the outer shell and the oil tank.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The present application discloses a heating oil barrel for cooking, wherein an oil pipe is connected to an oil tank, the oil tank has an inner cavity, the inner cavity is used to place edible oil, the oil pipe has an inlet and an outlet, the edible oil enters the oil pipe from the inlet and flows out from the outlet, and a heating unit is connected to the oil tank for heating the edible oil in the oil tank. A two-way suction unit is connected to the oil pipe, the two-way suction unit has a first suction direction and a second suction direction with opposite suction directions, wherein any one suction direction is used to pump the edible oil from the inner cavity of the oil tank out of the outlet of the oil pipe, and the other suction direction is used to draw the edible oil in the oil pipe back into the inner cavity of the oil tank. By drawing the residual edible oil in the oil pipe back into the inner cavity of the oil tank when the oil pipe does not discharge oil, the edible oil can be prevented from solidifying in the oil pipe and causing the oil pipe to be blocked.

[0022] Compared with the prior art, the cooking heating oil drum disclosed in the present application can prevent the edible oil from solidifying in the oil pipe and causing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is described in detail below with reference to the embodiments and drawings, wherein:

[0024] Figure 1A schematic structural diagram of a cooking heating oil drum provided according to an embodiment of the utility model is shown;

[0025] Figure 2 Shown according to Figure 1 A schematic diagram of the structure of an oil tank and part of an oil pipe in a heating oil drum for cooking is provided;

[0026] Figure 3 Shown according to Figure 2 A schematic structural diagram of a cooking oil heating drum provided with the upper cover removed from another perspective;

[0027] Figure 4 Shown according to Figure 3 A schematic diagram of the structure of a heating unit in a heating oil drum for cooking is provided;

[0028] Figure 5 Shown according to Figure 2 A schematic diagram of a structure in which the outer shell of a heating oil drum for cooking is removed is provided.

[0029] Description of labels:

[0030] 10. Oil pipe; 11. Nozzle;

[0031] 20. Fuel tank; 21. Housing; 22. Plug; 23. First handle; 24. Second handle;

[0032] 30. Two-way suction unit;

[0033] 40. Heating unit; 41. First heating part; 42. Second heating part; 43. Temperature adjustment knob; 44. Operation light; 45. Sensor; 46. Temperature limiter;

[0034] 50. Filter unit;

[0035] 60. Grid plate;

[0036] 70. Heating belt; 71. Heating generator;

[0037] 80. Residual material warning unit; 81. Buoyancy block; 82. Sliding rod; 83. Alarm. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the utility model clearer, the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Examples of embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be interpreted as limiting the utility model.

[0039] The utility model discloses a heating oil drum for cooking, please refer to Figures 1 to 5 ,include:

[0040] The oil pipe 10 has an inlet and an outlet which are connected to each other, and the inlet is connected to the inner cavity of the oil tank 20;

[0041] A heating unit 40 connected to the oil tank 20;

[0042] The bidirectional suction unit 30 is communicated with the oil pipe 10 , and has a first suction direction and a second suction direction which are opposite to each other.

[0043] The oil pipe 10 is connected to the oil tank 20. The oil tank 20 has an inner cavity for placing edible oil. The oil pipe 10 has an inlet and an outlet. The edible oil enters the oil pipe 10 from the inlet and flows out from the outlet. The heating unit 40 is connected to the oil tank 20 and is used to heat the edible oil in the oil tank 20. The two-way suction unit 30 is connected to the oil pipe 10. The two-way suction unit 30 has a first suction direction and a second suction direction with opposite suction directions. Any one of the suction directions is used to pump the edible oil out of the oil pipe 10 outlet from the inner cavity of the oil tank 20, and the other suction direction is used to draw the edible oil in the oil pipe 10 back into the inner cavity of the oil tank 20. By drawing the residual edible oil in the oil pipe 10 back into the inner cavity of the oil tank 20 when the oil pipe 10 does not discharge oil, the edible oil will not solidify in the oil pipe 10 and cause the oil pipe 10 to be blocked. Compared with the prior art, the cooking heating oil barrel disclosed in the present application can prevent the edible oil from solidifying in the oil pipe 10 and causing blockage.

[0044] It should be noted that the two-way suction unit 30 can be a unit that directly or indirectly controls the two-way suction, such as a pump body and a pressure controller. For example, when the two-way suction unit 30 is a pressure controller, the pressure controller can control the pressure of the gas pressure in the oil tank 20 to change, control the edible oil to be pressed out of the oil tank 20 when the pressure is increased, and suck the edible oil from the oil pipe 10 into the oil tank 20 when the pressure is reduced, thereby achieving the purpose of two-way suction and preventing the edible oil from solidifying and clogging in the oil pipe 10. In addition, the present application can also be applied to other ingredients that are easy to solidify, such as hot pot red oil, so as to achieve the purpose of preventing solidification and clogging in the oil pipe 10.

[0045] The bidirectional suction unit 30 and the oil pipe 10 may be connected directly or indirectly, and the bidirectional suction unit 30 is not limited to being installed only on the oil pipe 10 .

[0046] Specifically, the heating unit 40 may be a heating unit 40 directly contacting the cooking oil, such as a heating rod or a heating tube, placed in the inner cavity of the oil tank 20, or may be a heating unit 40 not directly contacting the cooking oil, such as an electromagnetic heater or a microwave heater, placed outside the oil tank 20. Users may select different types of heating units 40 based on cost and required heating rate.

[0047] In other embodiments, the oil tank 20 includes a stir-fry oil tank 20 and a frying oil tank 20, and the oil pipe 10 is connected to the stir-fry oil tank 20 and the frying oil tank 20 through a three-way valve. When cooking normally, the stir-fry oil tank 20 and the oil pipe 10 can be connected through the three-way valve. When frying, the oil pipe 10 and the frying oil tank 20 are connected through the three-way valve, and oil is discharged from the frying oil tank 20. In addition, the edible oil in the pot after frying can be sucked by the setting of the two-way suction unit 30, and it is pumped back into the frying oil tank 20, so as to facilitate the next use. The purpose of setting the stir-fry oil tank 20 and the frying oil tank 20 is to prevent the fried edible oil from entering the unused edible oil and causing the situation of cross-flavor.

[0048] In some embodiments, please refer to Figure 1 The outlet of the oil pipe 10 is connected to a nozzle 11. The arrangement of the nozzle 11 can make the edible oil form a water column, a plurality of fine water columns or a mist when spraying.

[0049] In some embodiments, please refer to Figure 2 and Figure 5 The heating unit 40 is connected to a temperature adjustment button. Preferably, the temperature adjustment button is a temperature adjustment knob 43, and the operator controls the temperature of the heating unit 40 by adjusting the temperature adjustment knob 43, thereby controlling the temperature of the heating unit 40.

[0050] In some specific embodiments, please refer to Figure 2 and Figure 5 The heating unit 40 is also connected to an operation light 44, which sends an operation signal when the heating unit 40 is working. The operation light 44 is used to determine whether the heating unit 40 is still in the heating state, so that the operator can determine when the edible oil changes from a solid state to a liquid state.

[0051] In some embodiments, please refer to Figures 2 to 5 The oil tank 20 is provided with a sensor 45, which is used to sense the temperature of the cooking oil in the oil tank 20. The sensor 45 signal is connected to the temperature limiter 46. When the temperature limiter 46 recognizes that the temperature in the oil tank 20 is higher than the preset temperature, the temperature limiter 46 controls the heating unit 40 to stop working, thereby completing the temperature control. In other embodiments, the heating unit 40 can be a device that can only heat to a fixed temperature.

[0052] In some embodiments, please refer to Figure 1 , the bidirectional suction unit 30 is a bidirectional pump;

[0053] Alternatively, the bidirectional suction unit 30 includes a first oil pump operating in a first suction direction and a second oil pump operating in a second suction direction.

[0054] It should be noted that the bidirectional suction unit 30 is a bidirectional pump, which is a pump body capable of bidirectional suction and can realize the bidirectional suction function in this application. In addition, a first oil pump and a second oil pump working in opposite directions can also be selected to also realize the bidirectional suction function.

[0055] When the first oil pump and the second oil pump are used, a preferred method is to connect the first oil pump and the second oil pump. When the first oil pump is working, the second oil pump can be placed in an uncontrolled state, so that the blades or gears of the second oil pump can rotate in any direction, so as to work in the first suction direction; when the second oil pump is working, the first oil pump can be placed in an uncontrolled state, so that the blades or gears of the first oil pump can rotate in any direction, so as to work in the second suction direction.

[0056] In some embodiments, please refer to Figure 3 The inlet is connected to the inner cavity of the oil tank 20 through the filter unit 50 .

[0057] Specifically, the filter unit 50 is a component for filtering impurities in the edible oil in the oil tank 20. The filtering method is physical filtration to prevent large particles of impurities in the edible oil from entering the oil pipe 10. When physical filtration is used, the process of the two-way suction unit 30 sucking the residual edible oil in the oil pipe 10 is equivalent to backwashing the filter unit 50, thereby preventing the filter unit 50 from being blocked and preventing the edible oil from entering.

[0058] In other embodiments, the filter unit 50 has a first filter layer and a second filter layer, and the edible oil passes through the first filter layer and the second filter layer at one time. The first filter layer is used to filter large particles of impurities, and the second filter layer is used to filter water in the edible oil, so as to achieve a better filtering effect. The first filter layer can be a filter mesh, and the second filter layer can be an oleophobic membrane.

[0059] In some embodiments, please refer to Figure 3 The oil tank 20 has a mesh plate 60 , a gap is formed between the mesh plate 60 and the bottom of the oil tank 20 , and the filter unit 50 is disposed above the mesh plate 60 .

[0060] Specifically, the filter unit 50 is disposed above the mesh plate 60. Since the impurities in the edible oil tend to settle at the bottom of the oil tank 20, by disposing the mesh plate 60 spaced apart from the bottom of the oil tank 20, the impurities in the edible oil can be deposited in the space between the bottom of the oil tank 20 and the mesh plate 60, so as to prevent excessive impurities from covering the filter unit 50 and affecting the efficiency of the filter unit 50 in sucking the edible oil. In addition, this embodiment only illustrates the positional relationship between the filter unit 50 and the mesh plate 60, and does not limit the filter unit 50 to be placed on the mesh plate 60.

[0061] In some embodiments, please refer to Figure 1 The oil pipe 10 and / or the two-way suction unit 30 located outside the oil tank 20 are wrapped with the heating belt 70 .

[0062] It should be noted that by wrapping the heating belt 70 around the oil pipe 10, condensation inside the pipe can be further prevented and the accuracy of oil output can be improved. After the two-way suction unit 30 draws the edible oil in the oil pipe 10 back to the oil tank 20, due to the high viscosity of the oil, some edible oil will still remain on the inner wall of the oil pipe 10. After solidification, the cross-sectional size of the oil pipe 10 will be reduced. The cooking heating oil barrel often completes the spraying action within a few seconds, but the edible oil in the oil tank 20 cannot completely melt the solidified edible oil remaining on the inner wall of the oil pipe 10 in a short time when passing through the oil pipe 10, thereby affecting the accuracy of oil output.

[0063] In addition, by winding the heating belt 70 on the two-way suction unit 30, the two-way suction unit 30 will not be stuck due to the solidification of the cooking oil, allowing it to rotate smoothly, further improving the accuracy of oil output.

[0064] Specifically, the heating belt 70 includes a belt-shaped body and a heating generator 71 connected to the belt-shaped body. The heating generator 71 controls the belt-shaped body to generate heat.

[0065] In some embodiments, please refer to Figure 3 and Figure 4 The heating unit 40 has a first heating portion 41 and a second heating portion 42, and the first heating portion 41 and the second heating portion 42 are respectively located in two planes that are not parallel to each other.

[0066] It should be noted that, in order to make the heating unit 40 obtain a higher heating efficiency, the heating unit 40 has a first heating part 41 and a second heating part 42, which are respectively arranged in two planes that are not parallel to each other, so that the heating of the heating unit 40 in the oil tank 20 has multiple dimensions, rather than just heating from a certain point, so that the solidified cooking oil melts into liquid more quickly. During use, one of the first heating part 41 and the second heating part 42 can be placed at the bottom of the oil tank 20, so that one of them heats the cooking oil at the bottom of the oil tank 20, and the other heats the cooking oil at other positions in the depth direction, so as to achieve faster heating efficiency.

[0067] In some specific embodiments, please refer to Figure 3 and Figure 4 One of the first heating unit 41 and the second heating unit 42 is placed between the grid plate 60 and the bottom of the oil tank 20, so that the cooking oil is heated at the bottom position to prevent the heating unit 40 from being unable to heat the cooking oil when there is less cooking oil in the oil tank 20.

[0068] In addition, the first heating part 41 and the second heating part 42 of the heating unit 40 may be two different heating components or two parts of the same component.

[0069] In some specific embodiments, please refer to Figure 3 and Figure 4 The heating unit 40 is a heating tube, the middle of the heating tube forms an S-shaped first heating portion 41, and the two ends of the heating tube form a second heating portion 42.

[0070] It should be noted that the heating unit 40 is a heating tube, and the first heating part 41 and the second heating part 42 are formed by the heating tube, wherein the heating tube has a middle part and two ends located at both ends of the middle part, and the middle part of the heating tube is bent to form an S-shaped first heating part 41, and the second heating part 42 extends outward relative to the first heating part 41. In this embodiment, since both ends extend outward, a better heating effect can be obtained under the joint action. In addition, by selecting a heating tube and forming the first heating part 41 and the second heating part 42 by one heating tube, the manufacturing cost is lower, and it is more convenient and simple during the installation process.

[0071] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 5 The oil tank 20 is connected to a residual material warning unit 80. When the oil in the oil tank 20 is reduced to a specified threshold, the residual material warning unit 80 sends a warning signal.

[0072] Specifically, a residual material warning unit 80 is connected to the oil tank 20, and the residual material warning unit 80 is used to monitor the amount of edible oil in the oil tank 20. Specific monitorable parameters include weight, depth, volume, etc. When the parameters are reduced to a specified threshold, the residual material warning unit 80 can send a warning signal to remind the operator to add edible oil.

[0073] In other embodiments, the residual material warning unit 80 may be a pressure sensor for monitoring the weight of the fuel tank 20 and an alarm 83 connected to the pressure sensor by a signal. When the weight of the fuel tank 20 drops to a certain specified threshold, the alarm 83 sends a warning signal.

[0074] It should be noted that the warning signal may be a sound signal, a visual signal, etc. The warning signal may be generated by electrical components such as speakers and indicator lights that require electrical connection, or it may be a status signal directly obtained through observation by the operator.

[0075] In some specific embodiments, please refer to Figure 2 , Figure 3 and Figure 5 The residual material warning unit 80 includes a buoyancy block 81, a slide bar 82 and an alarm 83. The slide bar 82 is connected to the bottom of the oil tank 20. The buoyancy block 81 is connected to the slide bar 82 without driving. When the buoyancy block 81 is lower than a specified threshold, the alarm 83 sends a warning signal.

[0076] Specifically, judging the amount of cooking oil in the oil tank 20 by the liquid level of the cooking oil in the oil tank 20 is more intuitive, and the installation process of the buoyancy block 81 and the slide bar 82 is also simpler and more accurate. Preferably, the buoyancy block 81 is a floating ball.

[0077] It should be noted that the alarm 83 can be an electrical component such as a horn or an indicator light. In other embodiments, the alarm 83 can also be a signal rod connected to the buoyancy block 81. The signal rod can extend out of the fuel tank 20 and move up and down with the buoyancy block 81. The operator can obtain the position status of the signal rod and thus obtain a warning signal.

[0078] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 5 The outer cover of the oil tank 20 is provided with a shell 21, and there is a gap between the shell 21 and the oil tank 20.

[0079] Among them, the outer cover of the oil tank 20 is provided with an outer shell 21, and there is a gap between the outer shell 21 and the oil tank 20. The setting of the outer cover can further protect the oil tank 20, and the more important purpose is to keep the oil tank 20 warm and reduce heat overflow.

[0080] In some specific embodiments, please refer to Figure 2 , Figure 3 and Figure 5 The housing 21 has a first handle 23, which is disposed on the top of the housing 21, so as to facilitate lifting the housing 21 and the components inside the housing 21 together.

[0081] In some more specific embodiments, the housing 21 has a second handle 24, and two second handles 24 are respectively arranged on the sides of the housing 21. This satisfies the use scenario where the fuel tank 20 is larger and needs to be carried by two people.

[0082] In the description of this specification, if the terms "embodiment one", "this embodiment", "in an embodiment" and the like appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model or the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example; moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in an appropriate manner.

[0083] In the description of this specification, the terms "connect", "install", "fix", "set", "have", etc. are all understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0084] In the description of this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0085] The above description of the embodiments is to facilitate ordinary technicians in the technical field to understand and apply the technology of this case. People familiar with the technology in this field can obviously make various modifications to these examples easily and apply the general principles described here to other embodiments without creative work. Therefore, this case is not limited to the above embodiments. Modifications to the following situations should all be within the scope of protection of this case: ① A new technical solution based on the technical solution of the utility model and combined with existing common knowledge, the technical effect produced by the new technical solution does not exceed the technical effect of the utility model; ② The equivalent replacement of some features of the technical solution of the utility model by using known technology, the technical effect produced is the same as the technical effect of the utility model; ③ The technical solution of the utility model can be expanded based on the technical solution of the utility model, and the substantive content of the expanded technical solution does not exceed the technical solution of the utility model; ④ The equivalent transformation made by using the contents of the specification and drawings of the utility model is directly or indirectly applied to other related technical fields.

Claims

1. A cooking oil drum, characterized in that: include: An oil pipe having an inlet and an outlet connected to each other, wherein the inlet is connected to the inner cavity of the oil tank; A heating unit connected to the oil tank; The bidirectional suction unit is communicated with the oil pipe and has a first suction direction and a second suction direction which are opposite to each other.

2. A cooking heating oil drum according to claim 1, characterized in that: The bidirectional suction unit is a bidirectional pump; Alternatively, the bidirectional suction unit includes a first oil pump operating in the first suction direction and a second oil pump operating in the second suction direction.

3. A cooking heating oil drum according to claim 1, characterized in that: The inlet is in communication with the inner cavity of the oil tank through a filter unit.

4. A cooking heating oil drum according to claim 3, characterized in that: The oil tank is provided with a mesh plate, a gap is formed between the mesh plate and the bottom of the oil tank, and the filter unit is arranged above the mesh plate.

5. A cooking heating oil drum according to claim 1, characterized in that: The oil pipe and / or the two-way suction unit located outside the oil tank is wrapped with a heating tape.

6. A cooking heating oil drum according to claim 1, characterized in that: The heating unit includes a first heating portion and a second heating portion, wherein the first heating portion and the second heating portion are respectively located in two planes that are not parallel to each other.

7. A cooking heating oil drum according to claim 6, characterized in that: The heating unit is a heating tube, the middle of the heating tube forms the S-shaped first heating portion, and both ends of the heating tube form the second heating portions.

8. A cooking heating oil drum according to any one of claims 1 to 7, characterized in that: The oil tank is connected to a residual material warning unit, and when the oil in the oil tank is reduced to a specified threshold, the residual material warning unit sends a warning signal.

9. A cooking heating oil drum according to claim 8, characterized in that: The residual material warning unit includes a buoyancy block, a sliding rod and an alarm. The sliding rod is connected to the bottom of the oil tank. The buoyancy block is connected to the sliding rod without driving. When the buoyancy block is lower than a specified threshold, the alarm sends a warning signal.

10. A cooking heating oil drum according to any one of claims 1 to 7, characterized in that: The outer cover of the oil tank is provided with an outer shell, and a space is provided between the outer shell and the oil tank.

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