Electric heating device for liquid fuel

Abstract

The utility model relates to the field of stoves, in particular to a liquid fuel electric heating device which comprises a heater, a connector, an electric heating rod, a corrugated pipe, a movable joint and the like. The heater is provided with a fuel inlet and outlet, and the corrugated pipe movable joint and the heater are connected into a whole through internal and external threads at the two ends of the connector through hole. The diameter of the head part of the through hole is small, and the diameter of the tail part of the through hole is large; the two ends of the connector are filled with the high-temperature-resistant insulating sealant, the electric wire of the electric heating rod, the electric heating wire and the wiring positions of the electric wire and the electric heating wire are all wrapped in the high-temperature-resistant insulating sealant of the corrugated pipe and the corrugated pipe movable connector, oil leakage and electric leakage are prevented, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of stoves, in particular to the manufacture of a low-power electric heating device for liquid fuel and a liquid stove. Background Art

[0002] Liquid fuel stoves refer to cooking stoves that use liquid fuel as energy and are directly heated by fire. Liquid fuels generally have a high ignition point and require a relatively high temperature to be ignited, so they are relatively safe, but they also bring a problem, which is that they are prone to incomplete combustion, large escape volume, low utilization rate, and will produce nitrogen oxides, which are serious carcinogens and harmful to the human body. At the same time, the outer shell of the low-power electric heating rod is a very thin metal shell, which is easy to deform during the installation process, causing the heated fuel to leak. The heating wire of the heating rod is a hard and brittle metal wire, which is easy to break, and the connection between the heating wire and the wire is also easy to break and short-circuit. The live wire is also easy to cause leakage, resulting in casualties and shortening the service life of the product. Utility Model Content

[0003] The utility model proposes a liquid fuel electric heating device, which solves the problem that the liquid fuel in the existing liquid fuel stove has high ignition temperature, incomplete combustion, large escape volume and low utilization rate when in use. At the same time, it solves the problems of liquid fuel leakage, disconnection, short circuit, leakage of wires and heating wires of heating rods, product service life, and accidents of casualties caused by leakage.

[0004] The technical solution of the utility model is achieved in this way:

[0005] The utility model firstly proposes a liquid fuel electric heating device, including a heater, a connector with a through hole, an adjustable low-power electric heating rod, an electric heating wire, a heating rod wire, a connection point between the electric heating rod wire and the heating wire, a bellows, a bellows flexible joint and high-temperature resistant insulating sealant filling both ends of the through hole of the connector, the high-temperature resistant insulating sealant effectively fixes all live parts and effectively insulates and isolates them from the bellows and the bellows joint, the connector with an axial through hole organically connects the low-power electric heating rod, the heater and the bellows flexible joint into a unified whole; the heater shell has a heating chamber inside, and the heater shell is provided with a fuel inlet and a fuel outlet connected to the heating chamber; the fuel outlet is connected to the burner nozzle of the stove; the low-power electric heating rod of the heating device is arranged in the heating chamber for preheating the incoming fuel; the fuel detection device is installed on the heater shell or in the heating chamber for detecting whether there is fuel in the heating chamber. The fuel temperature measuring device is installed on the heater shell for measuring the temperature of the heated liquid fuel.

[0006] Furthermore, the heating device is a low-power electric heating rod. More specifically, the heating device is a low-power electric heating rod with adjustable heating temperature.

[0007] Furthermore, the connector with the through hole can organically connect the low-power electric heating rod, the heater, and the bellows flexible joint into a unified whole.

[0008] Furthermore, the connector with an axial through hole is a head through hole through a small tail through hole through a large axial through hole, and the low-power electric heating rod passes through the head through hole, and the aperture of the head through hole is smaller than the rod diameter of the heating rod, that is, they are tightly fitted to prevent the heated liquid fuel from leaking out of this gap, but because the metal shell of the electric heating rod is thin, it will be deformed when it is tightly fitted through the connector through hole, and the heated liquid fuel may leak; the aperture of the tail through hole is larger than the rod diameter of the low-power electric heating rod, that is, they are clearance fits, therefore, there is a gap in the fit between the low-power electric heating rod and the tail hole, and this gap is filled with high-temperature resistant insulating sealant to prevent the heated liquid fuel from leaking out.

[0009] Furthermore, both ends of the connector with a through hole respectively have external threads, and the external threads at both ends are respectively connected to the bellows flexible joint with internal threads and the internal threads of the heater to form a whole.

[0010] Furthermore, the bellows flexible joint is sleeved with a bellows.

[0011] Furthermore, the axis of the bellows is sheathed with the electric wire of the low-power electric heating rod, the heating wire of the low-power electric heating rod connected to the electric wire and the connection point where they are connected, and the above live parts are fixed with high-temperature resistant insulating sealant, and are effectively insulated and isolated from the bellows and the bellows joint, so as to prevent oil leakage and electric leakage and extend the service life.

[0012] Furthermore, a temperature sensor for detecting temperature is arranged on the heater housing of the low-power electric heating device or at the fuel outlet.

[0013] Furthermore, the fuel detection device is installed on the heater housing of the low-power electric heating device or in the heating chamber to detect whether there is fuel in the heating chamber.

[0014] Furthermore, the fuel inlet is connected to a feed regulating valve.

[0015] Further, the fuel inlet and the fuel outlet are located at opposite ends of the heater housing for heating the liquid.

[0016] Furthermore, the fuel outlet is connected to a burner nozzle of the stove.

[0017] Furthermore, the fuel detection device is a pressure gauge installed on the heater housing of the low-power electrically heated liquid.

[0018] Beneficial effects of the utility model: The low-power electric heating device for liquid fuel of the utility model can heat the liquid fuel passing through first, so that the liquid fuel has a certain initial temperature when entering the burner nozzle, which makes it easier for the liquid fuel to ignite and burn faster and more fully, while reducing the escape amount of liquid fuel, the utilization rate of liquid fuel is higher, and the nitrogen oxides produced by incomplete combustion can be reduced, so as to achieve the purpose of energy saving and environmental protection. At the same time, due to the connector with a through hole, the head of the through hole uses a tight fit to prevent the heated liquid fuel from leaking. The tail of the through hole uses a clearance fit, and all the gaps are filled with high-temperature resistant insulating sealant. It can prevent the leakage of the heated liquid fuel caused by deformation during the installation process due to the thin metal shell of the low-power heating rod being insufficiently strong. In addition, high-temperature resistant insulating sealant is used at both ends of the connector with a through hole to fix all live parts and effectively insulate and isolate them from the bellows and the bellows joint with high-temperature resistant insulating sealant, which can more effectively prevent personal accidents caused by leakage of electricity due to broken wires, and can also protect the connection between the wires and the heating wire of the heating rod to avoid breakage, thereby extending the service life of the heating rod and effectively preventing the leakage of the heated liquid fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the liquid fuel electric heating device of the utility model.

[0021] In the figure:

[0022] 1. Connector with a through hole with a small aperture at the head and a large aperture at the tail; 2. Low-power electric heating rod; 3. Bellows; 4. Heater; 5. High-temperature resistant insulating sealant; 6. Fuel detection device; 7. Temperature sensor; 11. Connector external thread; 12. Connector with a through hole with a small aperture at the head and a large aperture at the tail; 21. Heating rod wire; 22. Heating rod heating wire; 23. Connection point between electric heating rod wire and heating wire; 31. Bellows flexible joint; 32. Bellows flexible joint internal thread; 41. Heater oil inlet; 42. Heater oil outlet; 43. Heater internal thread; 44. Heater shell cavity. DETAILED DESCRIPTION

[0023] The following will be combined with the attached embodiment of the present utility model Figure 1 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] Reference Figure 1 A liquid fuel electric heater device comprises a connector 1 with a through hole with a small aperture at the head and a large aperture at the tail, a low-power electric heating rod 2, a bellows 3, a heater 4, a high-temperature resistant insulating sealant 5, a fuel detection device 6, a temperature sensor 7, an external thread 11 of the connector, a through hole 12 with a small aperture at the head and a large aperture at the tail of the connector, a heating rod wire 21, a heating rod heating wire 22, a connection point 23 between the electric heating rod wire and the heating wire, a bellows flexible joint 31, an internal thread 32 of the bellows flexible joint, a heater oil inlet 41, a heater oil outlet 42, a heater internal thread 43, and a heater shell cavity 44.

[0026] The heating rod 2 follows the direction of the figure. The low-power electric heating rod 2 first passes through the connector 1 with a through hole 12 with a small head aperture and a large tail aperture. The head aperture is smaller than the diameter of the heating rod, and they are tightly fitted to prevent the heated liquid fuel from leaking out of this gap. However, because the metal shell of the heating rod is thin, it will be deformed when it is tightly fitted through the through hole 12 of the connector 1 with a small head aperture and a large tail aperture, and the heated liquid fuel may leak; then it passes through the tail aperture that is larger than the diameter of the low-power electric heating rod, and they are clearance fit. In the gap between the low-power electric heating rod and the tail aperture, the gap is filled with high-temperature resistant insulating sealant 5 to prevent the heated liquid fuel from leaking out. At the same time, the electric heating rod wire 21, the connection point 23 between the heating rod wire 21 and the heating wire, the heating rod heating wire 22, etc., are successively inserted into the bellows joint 31 and the bellows 3, and the bellows joint internal thread 32 is used to connect with the external thread 11 at one end of the connector 1 with a through hole with a small aperture at the head and a large aperture at the tail, and they are placed at the central axis position of the bellows, and then the high-temperature resistant insulating sealant 5 is poured into it, so that all the live parts can be effectively fixed with the high-temperature resistant insulating sealant 5 and effectively fixed and isolated from the bellows 3 and the bellows joint 31. To prevent the heating wire 22 of the heating rod and the connection point 23 of the heating wire from being broken during use, thereby extending the service life of the heating rod and preventing leakage of electricity caused by short circuit of the live wire due to breaking, thereby protecting the personal safety of the user and preventing leakage of the heated liquid fuel; the heater 4 is a heater shell cavity 44 with an oil inlet 41 and an oil outlet 42, a fuel detection device 6, a temperature sensor 7, and a heater internal thread 43 and an external thread 11 of a connector 1 with a small hole at the head and a large hole at the tail are connected into a whole.

[0027] The fuel detection device 6 is installed on the heater shell or in the heating chamber to detect whether there is fuel in the heating chamber. The temperature sensor 7 is installed on the heater shell cavity to measure the temperature of the heated liquid fuel.

[0028] The fuel inlet 41 and the fuel outlet 42 are located at opposite ends of the heater housing 4, so that the incoming liquid fuel can be heated more fully, and the fuel outlet is connected to the nozzle of the burner.

[0029] The liquid fuel electric heating device 2 is a low-power electric heating rod. More specifically, the low-power electric heating rod 2 is an electric heating rod with adjustable heating temperature. The heating method is simpler and the heating temperature control is more convenient by using a low-power electric heating rod for heating.

[0030] In some embodiments, the fuel detection device 6 is a pressure gauge installed on the heater 4, which determines whether there is liquid fuel in the heater 4 by changing the data on the pressure gauge to prevent dry burning; or, the fuel detection device 6 can also be a pressure sensor installed in the heater 4, which determines whether there is liquid fuel in the heater by changing the pressure value to prevent dry burning.

[0031] The liquid fuel electric heating device can heat the liquid fuel first so that the liquid fuel has a certain initial temperature when entering the burner nozzle, which makes it easier to ignite. The liquid fuel can burn more quickly and more fully, while reducing the escape amount of liquid fuel. The liquid fuel utilization rate is higher, and it can reduce the generation of nitrogen oxides due to incomplete combustion, thereby achieving the purpose of energy conservation and environmental protection. At the same time, due to the use of secondary high-temperature resistant dense insulating sealant, all live circuits are completely insulated and sealed, solving the safety hazards of circuit short circuit, open circuit, leakage, and oil leakage, and extending the service life of the product.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Liquid fuel electric heating device, characterized in that: It includes a heater, a connector with an axial through hole with a small diameter at the head and a large diameter at the tail, an adjustable low-power electric heating rod, an electric heating wire, a bellows, a bellows flexible joint, an electric heating rod wire, and a connection point between the electric heating rod wire and the heating wire; both ends of the connector with the axial through hole are filled with high-temperature resistant insulating sealant, which effectively fixes all live parts and effectively insulates and isolates them from the bellows and the bellows joint; the connector with the axial through hole organically connects the low-power electric heating rod, the heater, and the bellows flexible joint into a unified whole; The interior of the heater is a heating chamber, and the heater is provided with a fuel inlet and a fuel outlet communicating with the heating chamber, and at opposite ends of the heater; A low-power electric heating device is arranged in the heating chamber for preheating the incoming fuel; A fuel temperature measuring device, mounted on the heater housing, for measuring the temperature of the heated liquid fuel; The fuel detection device is installed on the heater housing or in the heating chamber to detect whether there is fuel in the heating chamber.

2. The liquid fuel electric heating device according to claim 1, characterized in that: The connector with an axial through hole has a small diameter at the head and a large diameter at the tail. The diameter of the head of the through hole is smaller than the rod diameter of the low-power heating rod. When the low-power electric heating rod passes through the head through hole, they are tightly fitted to prevent leakage of the heated fuel oil.

3. The liquid fuel electric heating device according to claim 1, characterized in that: The connector with an axial through hole has a small through hole diameter at the head and a large through hole diameter at the tail. The diameter of the through hole at the tail is larger than the rod diameter of the low-power electric heating rod and is a clearance fit. Therefore, there is a gap between the diameter of the through hole at the tail and the electric heating rod, and the gap is filled with high-temperature resistant insulating sealant, which can effectively prevent the heated liquid fuel from leaking from this gap.

4. The liquid fuel electric heating device according to claim 1, characterized in that: Both ends of the connector of the axial through hole respectively have external threads, and the external threads at the two ends are respectively connected with the internal threads of the internal threaded bellows flexible joint and the heater to form a whole.

5. The liquid fuel electric heating device according to claim 1, characterized in that: A bellows is sleeved inside the bellows flexible joint.

6. The liquid fuel electric heating device according to claim 1, characterized in that: One end of the electric wire of the low-power electric heating rod, the heating wire of the electric heating rod connected to the end of the wire, and the connection point where they are connected are all located at the central axis of the corrugated tube, and high-temperature resistant insulating sealant is used to effectively fix all the above live parts and effectively insulate and isolate them from the corrugated tube and the corrugated tube joint.

7. The liquid fuel electric heating device according to claim 1, characterized in that: The fuel inlet and the fuel outlet are located at opposite ends of the heater shell, and the fuel outlet is connected to the nozzle of the burner.

8. The liquid fuel electric heating device according to claim 1, characterized in that: The fuel inlet is connected with a feed regulating valve.

9. The liquid fuel electric heating device according to claim 1, characterized in that: A temperature sensor for detecting temperature is arranged on the heater housing of the low-power electric heating device or at the fuel outlet.

10. The liquid fuel electric heating device according to claim 1, characterized in that: The heater of the low-power electric heating device is provided with a fuel detection device for detecting whether there is liquid fuel in the low-power heater.

Images