Energy-saving electric heating tube

Abstract

The utility model relates to an energy-saving electric heating tube in the field of electric heating tubes, which comprises a shell and a heating tube arranged in the shell, a heating wire is arranged on the outer surface of the heating tube, a containing cavity is arranged in the shell, a heat conducting sheet is arranged on the outer surface of the heating tube, and the heat conducting sheet is spirally arranged on the outer surface of the heating tube in a surrounding mode. The heating wire and the heat-conducting strip sequentially surround the outer surface of the heating pipe at intervals, the space between the outer surface of the heating pipe and the containing cavity is filled with filler, the tail end of the heating pipe is connected with a heat insulation block, the bottom of the heat insulation block is connected with an insulating layer, and a temperature sensing assembly is arranged in the heating pipe. According to the utility model, the heat-conducting fins and the heating wires sequentially surround the outer surface of the heating tube at intervals, heat conduction can be uniformly and stably carried out through the spirally arranged heat-conducting fins, the contact area with the filler is increased, the heat loss is reduced, and the heating efficiency of the electric heating tube is improved, so that the electric energy loss generated by heating is reduced; and the electric heating tube has the effects of energy conservation and high efficiency.

Description

Technical Field

[0001] The utility model relates to the field of electric heating pipes, in particular to an energy-saving electric heating pipe. Background Art

[0002] The electric heating tube is an electrical component specially used to convert electrical energy into thermal energy. Among the existing electric heating tubes, the single-head electric heating tube is a common electric heating tube heating element. Its basic structure includes a metal tube, one end of which is closed and the other end is connected to the power supply. In the mold industry, the single-head electric heating tube is widely used in various plastic molding molds, die-casting molds, rubber molds, etc. As a mold heating element, its main function is to help the mold heat up quickly and maintain a constant temperature.

[0003] The main way to use a single-head electric heating tube in a mold is to insert its heating end into the heating hole of the mold and transfer heat through contact with the mold. The shell of the existing electric heating tube is generally a cylindrical structure. At the same time, the other end of the electric heating tube is connected to a power source to achieve rapid heating of the mold by powering on.

[0004] Existing electric heating tubes generally generate heat by energizing the heating wire, allowing electrons to move in the resistor due to the thermal vibration energy generated by atomic collisions, and finally conduction for use. However, the existing conduction device is only provided with a shell and magnesium oxide, and its conduction structure is relatively simple, resulting in poor energy utilization of the electric heating tube, thereby causing heat loss and causing a large amount of electrical energy waste. At the same time, this method will also cause the heating wire to be rapidly oxidized, which not only affects the service life of the electric heating tube, but also causes the use environment to be polluted and worsened due to the oxidation of the heating wire. Utility Model Content

[0005] The purpose of the utility model is to solve the above defects and provide an energy-saving electric heating tube to solve the technical problems that the electric heating tube in the above background technology has poor heat utilization rate and easy heat loss and waste, thereby resulting in slow heating efficiency of the electric heating tube.

[0006] The purpose of the utility model is achieved by the following methods:

[0007] An energy-saving electric heating tube comprises an outer shell and a heating tube arranged inside the outer shell, a heating wire is arranged on the outer surface of the heating tube, the heating wire is spirally wrapped and distributed on the outer surface of the heating tube, a guide pin is connected inside the heating tube, one end of the guide pin extends to one end of the outer shell and is connected to a wire, a accommodating cavity is arranged inside the outer shell, the heating tube is sleeved and installed in the accommodating cavity, a heat conducting plate is arranged on the outer surface of the heating tube in a spiral shape, the heating wire and the heat conducting plate are sequentially spaced and wrapped around the outer surface of the heating tube, a filler is filled between the outer surface of the heating tube and the accommodating cavity, an insulating block is connected to the end of the heating tube, an insulating layer is connected to the bottom of the insulating block, a mounting flange is connected to one end of the outer shell, one end of the mounting flange is connected to one end of the outer shell through a sealing groove, and a temperature sensing component is arranged inside the heating tube.

[0008] Further in the above description, the temperature sensing component is composed of a temperature sensing wire, one end of the temperature sensing wire extends inwardly along the axial direction of the heating tube, and the other end of the temperature sensing wire extends outwardly through the mounting flange. The temperature sensing wire is connected to an external detection device through the arranged temperature sensing wire, so that the heating temperature can be detected in real time to prevent excessive waste of heat.

[0009] Further in the above description, an insulating sealing member is inserted into the open end of the shell, and the upper surface of the insulating sealing member contacts the inner wall of the sealing groove. The setting of the insulating sealing member prevents heat from being lost from the open end of the shell, thereby enhancing heat utilization.

[0010] Further in the above description, the heat conductive sheet is in the shape of a spiral spring, and the two ends of the heat conductive sheet are respectively in contact with the surface of the insulating sealing member and the insulating heat insulation layer. The arrangement of the heat conductive sheet can enhance the uniform conduction of heat after the heating wire and the heating tube generate heat, thereby enhancing the contact area with the filler, making full use of the heat and conducting it to the surface of the outer shell. The spiral distribution of the heat conductive sheet and the heating wire can further enhance the heat utilization space, so that the heat accumulates in the middle of the outer shell, reducing the loss during the heat conduction process.

[0011] Further in the above description, a sealing position is provided on the outer surface of the mounting flange, and a sealing gasket is sleeved on the sealing position. The provided sealing gasket enhances the sealing of the electric heating pipe after installation and reduces heat loss from the outside.

[0012] Further in the above description, the outer surface of the mounting flange is provided with a threaded portion.

[0013] Further in the above description, there are two wires, and one end of each of the two wires extends outward through the mounting flange and is connected to a heat shrink tubing.

[0014] The beneficial effects of the utility model are as follows: the heat conducting sheet and the heating wire are arranged to surround the outer surface of the heating tube in sequence, so that the heat energy of the heating tube and the heating wire is generated rapidly and the heating is evenly performed, which greatly shortens the heating time. Therefore, through the design of the spirally wrapped heating wire and the heat conducting sheet, the electrical energy can be efficiently converted into thermal energy. At the same time, the heat conducting sheet arranged in a spiral can conduct heat evenly and stably, increase the contact area with the filler, reduce heat loss, improve the heating efficiency of the electric heating tube, thereby reducing the power loss generated by heating, and making the electric heating tube energy-saving and efficient. The design of the heat insulation block and the insulating heat insulation layer can prevent excessive heat transfer and reduce heat loss from the end of the outer shell, so that the electric heating tube has a longer service life. Through the design of the temperature sensing component, the temperature of the heating tube can be monitored in real time, and connected to the outside for feedback to achieve precise temperature control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional diagram of this embodiment;

[0016] Figure 2 This is an exploded view of the first direction of this embodiment;

[0017] Figure 3 It is an exploded view of the second direction of this embodiment;

[0018] Figure 4 is a cross-sectional view of this embodiment;

[0019] Figure 5 for Figure 4 A is a partial enlarged schematic diagram;

[0020] The reference numerals in the figure are: 1-housing, 2-heating tube, 3-heating wire, 4-conducting wire, 5-accommodating cavity, 6-heat conducting sheet, 7-filler, 8-insulating block, 9-insulating thermal insulation layer, 10-mounting flange, 11-closed groove, 12-temperature sensing wire, 13-insulating sealing part, 14-sealing position, 15-sealing gasket, 16-threaded part, 17-heat shrink sleeve. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] In this embodiment, refer to Figure 1-Figure 5The invention discloses an energy-saving electric heating tube, comprising a shell 1 and a heating tube 2 arranged inside the shell 1, a heating wire 3 is arranged on the outer surface of the heating tube 2, and the heating wire 3 is spirally distributed on the outer surface of the heating tube 2, a guide pin is connected to the heating tube 2, one end of the guide pin extends to one end of the shell 1, and is connected to a wire 4, a receiving cavity 5 is arranged inside the shell 1, the heating tube 2 is sleeved and installed in the receiving cavity 5, a heat conducting plate 6 is arranged on the outer surface of the heating tube 2 in a spiral shape, the heating wire 3 and the heat conducting plate 6 are sequentially spaced and surrounded on the outer surface of the heating tube 2, a filler 7 is filled between the outer surface of the heating tube 2 and the receiving cavity 5, a heat insulating block 8 is connected to the end of the heating tube 2, and an insulating heat insulating layer 9 is connected to the bottom of the heat insulating block 8, a mounting flange 10 is connected to one end of the shell 1, and one end of the mounting flange 10 is connected to one end of the shell 1 through a sealing groove 11, and a temperature sensing component is arranged inside the heating tube 2. The temperature sensing component is composed of a temperature sensing wire 12, one end of the temperature sensing wire 12 extends axially inwardly along the heating tube 2, and the other end of the temperature sensing wire 12 extends outwardly through the mounting flange 10. The temperature sensing wire 12 is connected to an external detection device so that the heating temperature can be detected in real time to prevent excessive waste of heat.

[0023] An insulating sealing member 13 is inserted into the open end of the housing 1, and the upper surface of the insulating sealing member 13 contacts the inner wall of the sealing groove 11. The insulating sealing member 13 prevents heat from being lost from the open end of the housing 1, thereby enhancing heat utilization.

[0024] The heat conducting sheet 6 is in the shape of a spiral spring, and the two ends of the heat conducting sheet 6 are respectively in contact with the surfaces of the insulating sealing member 13 and the insulating heat insulating layer 9. The heat conducting sheet 6 can enhance the uniform heat conduction after the heating wire and the heating tube 2 generate heat, thereby enhancing the contact area with the magnesium oxide powder, so that the heat can be fully utilized and conducted to the surface of the outer shell 1. The spiral distribution of the heat conducting sheet 6 and the heating wire 3 can further enhance the heat utilization space, so that the heat is accumulated in the middle of the outer shell 1, and the loss during the heat conduction process is reduced.

[0025] The outer surface of the mounting flange 10 is provided with a sealing clamp 14, and a sealing gasket 15 is sleeved on the sealing clamp 14. The provided sealing gasket 15 enhances the sealing performance of the electric heating pipe after installation and reduces the heat loss from the outside. The outer surface of the mounting flange 10 is provided with a threaded portion 16. Two wires 4 are provided, and one end of the two wires 4 passes through the mounting flange 10 and extends outward to be connected to a heat shrink sleeve 17.

[0026] The filler 7 in this example is magnesium oxide powder.

[0027] The specific use process of this embodiment is as follows: after the heat conducting sheet 6 and the heating wire 3 are plugged into each other in a spiral shape, they are both sleeved on the outer surface of the heating tube 2, the heating tube 2 is sleeved in the accommodating cavity 5 of the shell 1, and the insulating sealing member 13 is installed on the open end of the shell 1, and the wire 4 of the heating tube 2 is extended outward through the mounting flange 10, so that the wire 4 is connected to the power supply, and the temperature sensing line 12 is connected to the detection equipment. When the heating wire 3 and the heating wire are powered on and heated, the heat generated by them is heat-conducted through the spirally surrounded heating wire 3 and the heat conducting sheet 6. The heat conducting sheet 6 arranged with spiral intervals can enhance the heat conduction with the accommodating cavity. The magnesium oxide powder filled in 5 is contacted and conducted, which enhances the transmission and utilization of heat, improves the heating efficiency of the shell 1 and the uniformity of heat transfer, thereby reducing the power loss caused by the heating of the electric heating tube, so that the electric heating tube can achieve energy-saving and high-efficiency effects. The heat insulation blocks 8 and the insulating sealing members 13 arranged at both ends of the heating tube 2 can prevent excessive heat transfer to both ends of the shell 1, reduce heat loss from the end of the shell 1, and make the electric heating tube have a longer service life. The internal temperature of the heating tube 2 can be monitored in real time through the temperature sensing line 12, and can be accurately controlled and fed back through the connected detection equipment.

[0028] In summary, the energy-saving electric heating tube in the utility model has the advantages of energy saving and high efficiency, rapid heating, strong durability and precise temperature control, which is of great significance for improving heating efficiency and saving energy.

[0029] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. An energy-saving electric heating tube, comprising a shell and a heating tube arranged inside the shell, a heating wire is arranged on the outer surface of the heating tube, the heating wire is spirally arranged on the outer surface of the heating tube, a guide pin is connected inside the heating tube, one end of the guide pin extends to one end of the shell and is connected to a wire, characterized in that: A accommodating cavity is provided inside the shell, and the heating tube is sleeved and installed in the accommodating cavity. A heat conductive sheet is provided on the outer surface of the heating tube, and the heat conductive sheet is spirally arranged on the outer surface of the heating tube. The heating wire and the heat conductive sheet are sequentially spaced and surrounded on the outer surface of the heating tube. A filler is filled between the outer surface of the heating tube and the accommodating cavity. An insulating block is connected to the end of the heating tube, and an insulating layer is connected to the bottom of the insulating block. One end of the shell is connected to a mounting flange, and one end of the mounting flange is connected to one end of the shell through a sealing groove. A temperature sensing component is provided inside the heating tube.

2. An energy-saving electric heating tube according to claim 1, characterized in that: The temperature sensing component is composed of a temperature sensing wire, one end of which extends inwardly along the axial direction of the heating tube, and the other end of which extends outwardly through the mounting flange.

3. The energy-saving electric heating tube according to claim 1, characterized in that: An insulating sealing piece is inserted into the open end of the shell, and the upper surface of the insulating sealing piece contacts the inner wall of the sealing groove.

4. The energy-saving electric heating tube according to claim 3, characterized in that: The heat conducting sheet is in the shape of a spiral spring, and two ends of the heat conducting sheet are respectively in contact with the surfaces of the insulating sealing member and the insulating heat insulation layer.

5. An energy-saving electric heating tube according to any one of claims 1 to 4, characterized in that: The outer surface of the mounting flange is provided with a sealing clamping position, and a sealing gasket is sleeved on the sealing clamping position.

6. An energy-saving electric heating tube according to any one of claims 1 to 4, characterized in that: The outer surface of the mounting flange is provided with a threaded portion.

7. An energy-saving electric heating tube according to any one of claims 1 to 4, characterized in that: There are two wires, and one end of each of the two wires passes through the mounting flange and extends outwards to be connected with a heat shrink sleeve.

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