A high power direct resistance heating element and method of use thereof

Abstract

The application relates to a high-power direct resistance heating element and a use method thereof, in particular to a high-power direct resistance heating element and a use method thereof, which comprise an inner cylinder and an outer cylinder, a heating cavity is formed between the inner cylinder and the outer cylinder, a heating piece is arranged in the heating cavity, the heating piece is composed of a plurality of heating plates, the heating cavity is divided into a plurality of independent heating channels by the plurality of heating plates, a plurality of grooves are equidistantly arranged on the two side surfaces of the heating piece, a plurality of heating pieces are arranged in the grooves, and a guide groove for communication is arranged between left and right adjacent grooves. In the application, the grooves are matched with the bosses on the heating element, heating is conducted by a single point, the heating plates and the bosses are heated, the contact area between the flowing liquid and the heating plates and the bosses is larger, the heating efficiency per unit time can be improved, the liquid is heated by the heating element, the area of the flowing liquid that can be heated is increased, and the overall heating efficiency is higher.

Description

Technical Field

[0001] This invention relates to the field of heater technology, specifically to a high-power direct resistance heating element and its usage method. Background Technology

[0002] A pipe heater is an energy-saving device for preheating materials. It is installed before the material equipment to directly heat the material, allowing it to circulate and heat at high temperatures, ultimately achieving energy savings. Common structures for pipe heaters include inserting tubular heating elements directly into the reactor of the pipe heater or evenly distributing heating tubes around the walls of the pipe heater. However, existing tubular heating elements have a simple structure, but when heating liquids, the amount of liquid that can be heated per unit time is limited. Furthermore, the flowing liquid has a certain velocity when passing through the heating element, resulting in a small contact area with the heating element and limited heating efficiency.

[0003] Therefore, a high-power direct resistance heating element and its usage method are needed to improve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a high-power direct resistance heating element and its usage method, in order to solve the problems mentioned in the background art, such as the simple structure of existing tubular electric heating elements, the limited amount of liquid that can be heated per unit time when heating liquid, the small contact area between the flowing liquid and the heating element due to the certain speed of the flowing liquid, and the limited heating efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-power direct resistance heating element includes an inner cylinder and an outer cylinder, with a heating cavity formed between the inner and outer cylinders. A heating element, composed of several heating plates, is disposed inside the heating cavity, dividing the heating cavity into several independent heating channels. Several grooves are equally spaced on both sides of the heating element, each groove containing a heating element. A guide groove for communication is provided between adjacent grooves. An inner mounting cavity is formed inside the heating element, containing a conductive component. Mounting grooves are provided on both sides of the mounting cavity at positions corresponding to the grooves, each containing a heat-conducting component. The grooves and heating elements increase the contact area with the liquid. The conductive component, through the heat-conducting component, achieves simultaneous heating of multiple single points, resulting in greater heat generation per unit time and higher heating efficiency. The heating element includes several protrusions disposed inside the grooves, arranged in several rows, with liquid flow channels formed between adjacent rows of protrusions.

[0007] As a preferred embodiment of the present invention, the conductive component includes a metal guide rod that penetrates the inner mounting cavity. Several connecting members connect the two sides of the metal guide rod to connecting posts, and each connecting post is fixedly connected to each heat-conducting component. The heating plate is energized by an external power source and conducts electricity through the guide rod. The connecting members and connecting posts connect to the circuit, and the heating element generates heat when energized. The heating element aligns with the groove, achieving simultaneous heating of a single point on the heating plate. After the liquid flows through, it flows through the groove and contacts the protrusion within the groove, and is heated through the protrusion and the groove, thus heating the liquid in a short time.

[0008] As a preferred embodiment of the present invention, the heat-conducting element is a heating plate, and the heating plate has a sheet-like structure.

[0009] As a preferred embodiment of the present invention, the boss is hexagonal frustum-shaped and is fixedly connected to one side of the groove. The boss can increase the contact area with the liquid, thereby improving the heating efficiency.

[0010] As a preferred embodiment of the present invention, the heating plate and the outer surface of the boss are both provided with an aluminum nitride ceramic coating, which can prevent leakage.

[0011] As a preferred embodiment of the present invention, the heating element, the inner cylinder and the outer cylinder are all disposed inside the mounting structure, and one end of the mounting structure is provided with an opening, and a partition cylinder is connected to the inside of the opening. A flow cavity is formed between the partition cylinder and the outer cylinder. The liquid enters the flow cavity after passing through the heating channel. A number of grooves connected to the flow cavity are provided at one end of the partition cylinder. A number of U-shaped heating elements are also provided inside the partition cylinder.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] In this invention, by using a groove and a boss on the heating element, heating is carried out at a single point, heating the heating plate and the boss. The contact area between the flowing liquid and the heating plate and the boss is larger, thus improving the heating efficiency per unit time. Furthermore, the heating element heats the liquid separately, increasing the area of ​​the flowing liquid that can be heated, resulting in higher overall heating efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the heating element in this invention;

[0015] Figure 2 This is a schematic diagram of the heating element in this invention;

[0016] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a schematic diagram of the internal structure of the heating element in this invention;

[0018] Figure 5 This is a schematic diagram of the installation structure of the present invention;

[0019] Figure 6 This is an internal schematic diagram of the mounting structure of the present invention;

[0020] Figure 7 This is a cross-sectional view of the installation structure of the present invention.

[0021] In the figure: heating element 1, heating plate 11, groove 12, boss 13, guide groove 14, inner mounting cavity 15, metal guide rod 16, connecting column 17, connector 18, heating plate 19, mounting structure 2, inner cylinder 3, outer cylinder 4. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] To facilitate understanding of the present invention, a more complete description will be given below with reference to relevant descriptions. Several embodiments of the invention are provided. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Please see Figure 1-7 The present invention provides a technical solution:

[0027] For an example, please refer to... Figure 1 , 2 3, 4, 5, 6, and 7, a high-power direct resistance heating element, comprising an inner cylinder 3 and an outer cylinder 4, with a heating cavity formed between the inner cylinder 3 and the outer cylinder 4. A heating element 1 is disposed inside the heating cavity, the heating element 1 consisting of several heating plates 11, which divide the heating cavity into several independent heating channels. Several grooves 12 are equally spaced on both sides of the heating element 1, each groove containing a heating element. A guide groove 14 for communication is provided between adjacent grooves 12. An inner mounting cavity 15 is formed inside the heating element 1, containing a conductive component. Mounting grooves are provided on both sides of the mounting cavity corresponding to the positions of the grooves 12, each containing a heat-conducting component. The conductive component includes a metal guide rod 16, which penetrates the inner mounting cavity 15. Connecting posts 17 are connected to both sides of the metal guide rod 16 via several connectors 18. The connecting post 17 is fixedly connected to each heat-conducting component. The heat-conducting component is a heating plate 19, which has a sheet-like structure. The heating component includes several protrusions 13 disposed inside the groove 12, and the protrusions 13 are arranged in several rows. A liquid flow channel is formed between adjacent horizontal rows of protrusions 13. The protrusions 13 are hexagonal frustum-shaped and are fixedly connected to one side of the groove 12. The liquid enters into several individual heating channels. The heating plate 11 is powered by an external power source and conducts electricity through the connecting rod 16. The connecting member 18 and the connecting post 17 are connected to the circuit. The heating plate 19 is powered and heats up. The heating plate 19 is connected to the groove 12 to achieve common heating of a single point on the heating plate 11. After the liquid flows through, it flows through the groove 12 and contacts the protrusions 13 inside the groove 12. The liquid is heated by the protrusions 13 and the groove 12, which can achieve heating in a short time.

[0028] Please refer to Figure 1 , 2 3. The outer surfaces of the heating plate 11 and the boss 13 are all provided with aluminum nitride ceramic coating, which can prevent leakage.

[0029] Please refer to Figure 1 , 2 In the installation structure 2, heating element 1, inner cylinder 3, and outer cylinder 4 are all located inside the installation structure 2. One end of the installation structure 2 has an opening, and a partition cylinder is connected to the inside of the opening. A flow cavity is formed between the partition cylinder and the outer cylinder 4. The liquid enters the flow cavity after passing through the heating channel. Several grooves connected to the flow cavity are provided at one end of the partition cylinder. Several U-shaped heating elements are also provided inside the partition cylinder. After the liquid is initially heated by the heating channel, it enters the partition cylinder through the flow cavity and is heated again by the U-shaped heating elements.

[0030] A method for using a high-power direct resistance heating element, comprising the following steps:

[0031] S1. Make an electrical connection between one end of the heating plate and the wiring terminal of the mounting structure;

[0032] S2. After being powered on, the metal conductor rod conducts electricity, which is conducted through the connector and the connecting post. The heating element is a resistance element, which heats up and generates point heat. The heat generated by the resistance element is conducted to the heating plate. The heating plate has a thermally conductive and insulating coating to achieve overall heating. At the same time, the boss is heated through the heating plate.

[0033] S3. The liquid flows through the heating channel and comes into contact with the groove and the protrusion inside it, which increases the contact area and makes the heating efficiency higher per unit time.

[0034] S4. The liquid, after passing through the heating channel, enters the separator cylinder and is heated again by the U-shaped heating element.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-power direct resistance heating element, comprising an inner cylinder (3) and an outer cylinder (4), a heating cavity is formed between the inner cylinder (3) and the outer cylinder (4), a heating piece (1) is arranged inside the heating cavity, the heating piece (1) is composed of a plurality of heating plates (11), and the plurality of heating plates (11) separate the heating cavity into a plurality of independent heating channels, characterized in that: The heating element (1) is provided with a plurality of grooves (12) at equal intervals on both sides, a plurality of heating elements are arranged in the grooves (12), and a guide groove (14) for communication is arranged between the left and right adjacent grooves (12), an inner mounting cavity (15) is arranged in the heating element (1), an electrically conductive assembly is arranged in the inner mounting cavity (15), mounting grooves are arranged at positions corresponding to the grooves (12) on both sides of the mounting cavity, and a heat conducting element is arranged in the mounting groove, the heating element comprises a plurality of bosses (13) arranged in the grooves (12), and a plurality of rows of bosses (13) are arranged, and a liquid flow channel is formed between adjacent horizontal rows of bosses (13). ​ 2. A high power direct resistance heating element according to claim 1, characterized in that: The electrically conductive assembly comprises a metal guide rod (16) which is arranged in the inner mounting cavity (15) in a penetrating manner, and the metal guide rod (16) is connected with a connecting column (17) through a plurality of connecting pieces (18) on both sides, and each connecting column (17) is fixedly connected with each heat conducting element.

3. A high power direct resistance heating element according to claim 1, characterized in that: The heat conducting element is a heating sheet (19), and the heating sheet (19) is a sheet structure.

4. A high power direct resistance heating element according to claim 1, characterized in that: The boss (13) is a hexagonal platform, and the boss (13) is fixedly connected with one side in the groove (12).

5. A high power direct resistance heating element according to claim 1, characterized in that: The outer side surfaces of the heating plate (11) and the boss (13) are provided with an aluminum nitride ceramic coating.

6. A high power direct resistance heating element according to any one of claims 1-3, 4-5, characterized in that: The heating element (1), the inner cylinder (3) and the outer cylinder (4) are arranged in the mounting structure (2), and one end of the mounting structure (2) is provided with an opening, and the inner side of the opening is connected with a separation cylinder, and a flow cavity is formed between the separation cylinder and the outer cylinder (4), the liquid enters the flow cavity after passing through the heating channel, one end of the separation cylinder is provided with a plurality of groove bodies connected with the flow cavity, and a plurality of U-shaped heating elements are further arranged in the separation cylinder.

7. A method of using a high power direct resistance heating element, characterized by, The heating element according to any one of claims 1-6 is used, comprising the following steps: S1. electrically connecting between one end of the heating plate and the wiring end of the mounting structure; S2. After power on, the metal guide rod conducts electricity, and the connecting piece and the connecting column conduct electricity, the heating sheet is a resistance sheet, the resistance sheet generates heat, the resistance sheet generates point heating, the heat generated by the resistance sheet is conducted to the heating plate, the heating plate has a heat-conducting insulating coating, the whole heating is realized, and the boss is heated through the heating plate; S3. The liquid flows through the heating channel, contacts the groove and the boss in the groove, and the contact area is increased, so that the heating efficiency in unit time is higher; S4. After the liquid passes through the heating channel, it enters the separation cylinder and is heated again by the U-shaped heating element.

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