CN214125550U

CN214125550U - Porous silicon carbide rod electric heating element

Info

Publication number: CN214125550U
Application number: CN202120268351.6U
Authority: CN
Inventors: 陈志辉; 陈章有; 陈克明
Original assignee: Zhengzhou City Songshan Heating Elements Co ltd
Current assignee: Zhengzhou City Songshan Heating Elements Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-09-03
Anticipated expiration: 2031-02-01

Abstract

The utility model provides a porous silicon carbide rod electric heating element, which comprises a body, the body comprises a heating part and two cold ends, the outer surfaces of the two cold ends are provided with metal layers, the heating part comprises at least one tubular heating section, a plurality of first reinforcing ribs are arranged on the outer surface of the heating section along the length direction, the first reinforcing ribs are arranged along the circumferential direction of the heating section at uniform intervals, a plurality of first through holes communicated with the interior are arranged on the side wall of the heating part at positions different from the first reinforcing ribs, and the first through holes are arranged at positions different from the connecting parts of the heating part and the cold ends; through setting up first strengthening rib to first through-hole to increase the surface area of heating end through first strengthening rib and first through-hole, thereby increase area of contact, improve the speed of heat transfer, and can guarantee the intensity of heating section through the mode of first strengthening rib and first through-hole mutually supporting, can improve the wholeness ability of elema electric heating element.

Description

Porous silicon carbide rod electric heating element

Technical Field

The utility model relates to a elema electric heating element technical field, concretely relates to porous elema electric heating element.

Background

The silicon-carbon rod is a rod-shaped or tubular non-metal high-temperature electric heating element which is made by using high-purity silicon carbide as a main raw material, processing and preparing a blank according to a certain material ratio, and carrying out high-temperature silicification recrystallization sintering at 2200 ℃ and has the characteristics of high service temperature, high resistance to high temperature, oxidation, corrosion, fast temperature rise, long service life, small high-temperature deformation and the like, and has good chemical stability.

The silicon carbide rod electric heating element is matched with an automatic electric control system, so that accurate constant temperature can be obtained, and the temperature can be automatically adjusted according to the requirements of the production process and curves. The silicon carbide rod is used for heating, so that the heating is convenient, safe and reliable. The silicon carbide rod is widely applied to the high-temperature fields of electronics, magnetic materials, powder metallurgy, ceramics, glass, semiconductors, analytical tests, scientific research and the like, becomes an electric heating element of a tunnel kiln, a roller kiln, a glass kiln, a vacuum furnace, a muffle furnace, a smelting furnace and various heating devices, is heated after being electrified, and then generates heat transfer with the periphery to realize the heating of the periphery, but the contact area of the existing silicon carbide rod and the surrounding air is only the outer surface of the silicon carbide rod, and the problem of slow heat transfer exists.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problem, the present application provides a porous type elema electric heating element, surface through the heating member at elema electric heating element sets up the strengthening rib, and the position that is different from the strengthening rib sets up the through-hole on the lateral wall of heating member, thereby increase the surface area of heating section through first strengthening rib and first through-hole, thereby improve area of contact, the speed of its high heat transfer, and can guarantee the intensity of heating section through the mode of first strengthening rib and first through-hole mutually supporting, can increase elema electric heating element's wholeness ability.

The utility model provides a porous type elema electric heating element, which comprises a body, the body includes a heating portion and two cold junctions, two the surface of cold junction all is provided with the metal level, the heating portion includes at least one pipy heating section, it is provided with a plurality of first strengthening ribs, a plurality of to extend from along length direction on the surface of heating section first strengthening rib is followed the even interval of circumference of heating section sets up different in on the lateral wall of heating portion the position of first strengthening rib is provided with the inside first through-hole of a plurality of intercommunications, just first through-hole different in the heating portion with the part setting that the cold junction is connected.

Further, the heating part comprises a tubular heating section, the two cold ends are connected to the two ends of the heating section in a welding mode, and the metal layer is close to the two ends of the cold ends.

Further, the heating section includes parallel arrangement's first heating section and second heating section, the heating portion is still including connecting first heating section with the connection bridge of second heating section, just first heating section with the second heating section is with being in connect one side of bridge, the cold junction with first heating section with the second heating section is kept away from the one end of connecting the bridge is connected.

Furthermore, the through hole is different from the connecting bridge and the connecting positions of the first heating section and the second heating section.

Further, the connecting bridge is a non-heating part; the first reinforcing rib is only arranged on the first heating section and the second heating section, and the first through hole is not formed in the connecting bridge.

Further, the connecting bridge is a tubular heating element; the outer side wall of the connecting bridge is provided with a plurality of second reinforcing ribs extending along the length direction of the outer side wall, the second reinforcing ribs are arranged along the circumferential direction of the connecting bridge at even intervals, and a plurality of second through holes are formed in the positions, different from the second reinforcing ribs, of the side wall of the connecting bridge.

Furthermore, the second through hole is arranged at a position different from the connecting bridge connected with the first heating section and the second heating section.

The utility model provides a pair of porous type elema electric heating element is through setting up the electro-magnet, sets up the strengthening rib through the surface at elema electric heating element's heating section to the position that is different from first strengthening rib on the lateral wall of heating section sets up the through-hole, thereby increases the surface area of heating section through first strengthening rib and first through-hole, thereby improves area of contact, improves the speed of the heat transfer of electric heating member.

In addition, the structural strength of the heating section can be ensured through the mode that the first reinforcing rib and the first through hole are matched with each other, and even the structural strength of the heating section can be improved, so that the overall performance of the silicon carbide rod electric heating piece can be improved.

In addition, through setting up the heating member into parallel first heating section and second heating section, can improve the length of heating section, satisfy the heating demand, and can also satisfy the less heating furnace that nevertheless heating temperature is high of some sizes through this kind of mode of setting up to will make first through-hole not set up the position of being connected at first heating section, second heating section and connecting bridge, thereby guarantee the joint strength of first heating section, second heating section and connecting bridge.

In addition, also set up to the heating member through will connecting the bridge to can further improve the heating efficiency of elema electrical heating element, and set up second strengthening rib and second through-hole at the surface of connecting the bridge, improve the surface area of connecting the bridge, improve elema electrical heating element's heating efficiency.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an embodiment of a porous silicon carbide rod electric heating element provided by the present invention.

Fig. 2 is a schematic structural diagram of another embodiment of the porous silicon carbide rod electric heating element provided by the present invention.

Fig. 3 is a schematic structural diagram of a third embodiment of a porous silicon carbide rod electric heating element provided by the present invention.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Detailed Description

Example one

The utility model provides a porous type elema electric heating element, refer to figure 1, as the first mode that can carry out, including body 1, body 1 includes a heating portion 10 and two cold junctions 11, two the surface of cold junction 11 all is provided with metal level 110, heating portion 10 includes at least one pipy heating section 100, it is provided with a plurality of first strengthening ribs 101, a plurality of to extend along length direction on the surface of heating section 100 the strengthening rib is followed the even interval of circumference of heating section 100 is different in on the lateral wall of heating portion 10 first strengthening rib 101's position is provided with the inside first through-hole 102 of a plurality of intercommunications, just first through-hole 102 is different in heating portion 10 with the part setting that cold junction 11 is connected. The heating part 10 comprises a tubular heating section 100, two of the cold ends 11 are connected to two ends of the heating section 100 in a welding mode, and the metal layer 110 is close to two ends of the cold ends 11.

Specifically, the heating section 100 is connected with the cold end in a welding manner, the heating section is of a tubular structure, the first reinforcing rib 101 and the first through hole 102 can be integrally formed during manufacturing the heating section, the reinforcing rib 101 can also generate heat, the first through hole 102 is communicated with the inside of the heating section 100, namely, the first through hole is communicated with a hollow tube in the middle of the tubular heating section, a metal layer 110 is arranged at the cold end to improve the electric contact effect between the cold end and a lead, the metal layer can be a copper layer, an aluminum layer and the like and can be formed in a hot-dip coating or spraying manner, when the heating section 100 is used, the cold end is connected with the lead, the heating section 100 is electrified to generate heat, the internal heating of the heating furnace is realized, the surface area of the heating section 100 can be improved by arranging the first reinforcing rib 101 and the first through hole, so that the heat transfer rate can be improved, and specifically, referring to fig. 1, the first reinforcing rib can be of a linear type, the cross section of the heating section can be in an isosceles trapezoid shape, a semicircular shape and the like, the surface area can be improved by arranging the first reinforcing rib, the problem that the strength of the heating section is reduced after the first through hole is arranged can be solved, and the structural strength of the heating section 100 can be integrally improved; in addition, the first reinforcing rib may be arranged in a spiral shape spirally arranged along the outer surface of the heating section 100, and the first through hole is also arranged at a position different from the first reinforcing rib.

In addition, the first heating section 100 may further have a single-thread type or a double-thread type, and when the heating section 100 is the single-thread type, the first reinforcing ribs should be arranged spirally along an arrangement track of the threads of the thread-type heating section, preferably, two first reinforcing ribs are arranged on both sides of each thread gap, and the first through holes are arranged between two adjacent first reinforcing ribs.

Example two

Referring to fig. 2, the present invention provides a porous silicon carbon rod electric heating element, which is different from the first embodiment in that the heating section 100 includes a first heating section 103 and a second heating section 104 arranged in parallel, the heating section 10 further includes a connecting bridge 105 connecting the first heating section 103 and the second heating section 104, and the first heating section 103 and the second heating section 104 are located at one side of the connecting bridge 105, and the cold end 11 is connected to one ends of the first heating section 103 and the second heating section 104 away from the connecting bridge 105; the first through hole 102 is disposed at a position different from the connecting bridge 105, the first heating section 103, and the second heating section 104.

The connecting bridge 105 is a non-heating element; the first reinforcing rib 101 is disposed only on the first heating section 103 and the second heating section 104, and the first through hole 102 is not disposed on the connecting bridge 105. The connecting bridge can be connected with first heating section and second heating section through the welded mode, first heating section and second heating section are tubular structure, through setting up the heating member into parallel first heating section and second heating section, can improve the length of heating section, satisfy the heating demand, and can also satisfy the less heating furnace that nevertheless heating temperature is high of some sizes through this kind of mode of setting up, and will make first through-hole not set up at first heating section, second heating section and the position of being connected the bridge connection, thereby guarantee first heating section, second heating section and the joint strength who connects the bridge.

EXAMPLE III

Referring to fig. 3, the present invention provides a porous silicon carbide rod electrical heating element, wherein the heating section 100 comprises a first heating section 103 and a second heating section 104 arranged in parallel, the heating section 10 further comprises a connecting bridge 105 connecting the first heating section 103 and the second heating section 104, the first heating section 103 and the second heating section 104 are located at one side of the connecting bridge 105, and the cold end 11 is connected with one ends of the first heating section 103 and the second heating section 104 far away from the connecting bridge 105; the first through hole 102 is disposed at a position different from the connecting bridge 105, the first heating section 103, and the second heating section 104.

The difference from the second embodiment is that the connecting bridge 105 is a tubular heating element; the outer side wall of the connecting bridge 105 is provided with a plurality of second reinforcing ribs 106 extending along the length direction of the connecting bridge, the second reinforcing ribs 106 are uniformly arranged along the circumferential direction of the connecting bridge 105 at intervals, and a plurality of second through holes 107 are formed in the side wall of the connecting bridge 105 at positions different from the positions of the second reinforcing ribs 106. Wherein the mode of setting up of second strengthening rib is unanimous with the mode of setting up of first strengthening rib, can be trapezoidal, semicircular structure for the cross-section, also sets up to the heating member through connecting the bridge to can further improve elema electrical heating element's heating efficiency, and set up second strengthening rib and second through-hole at the surface of connecting the bridge, improve the surface area of connecting the bridge, improve elema electrical heating element's heating efficiency.

Furthermore, the second through hole 107 is different from the connecting bridge 105, and the connecting bridge is connected with the first heating section 103 and the second heating section 104, so that the structural strength of the connecting part of the first heating section, the second heating section and the connecting bridge can be ensured by the arrangement mode.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The utility model provides a porous type elema electric heating element, includes body (1), body (1) includes a heating portion (10) and two cold junctions (11), two the surface of cold junction (11) all is provided with metal layer (110), a serial communication port, heating portion (10) include at least one pipy heating section (100), it is provided with a plurality of first strengthening ribs (101) from extending along length direction on the surface of heating section (100), and is a plurality of first strengthening rib is followed the even interval in circumference of heating section (100) sets up different in on the lateral wall of heating portion (10) the position of first strengthening rib (101) is provided with inside first through-hole (102) of a plurality of intercommunications, just first through-hole (102) different in heating portion (10) with the part setting that cold junction (11) are connected.

2. A porous silicon carbon rod electric heating element according to claim 1, characterized in that said heating part (10) comprises a tubular heating section (100), two said cold ends (11) are welded at both ends of said heating section (100), and said metal layer (110) is disposed near both ends of said cold ends (11).

3. A porous silicon carbon rod electric heating element according to claim 1, characterized in that the heating section (100) comprises a first heating section (103) and a second heating section (104) arranged in parallel, the heating section (10) further comprises a connecting bridge (105) connecting the first heating section (103) and the second heating section (104), and the first heating section (103) and the second heating section (104) are located at the same side of the connecting bridge (105), and the cold end (11) is connected with one ends of the first heating section (103) and the second heating section (104) far away from the connecting bridge (105).

4. A porous silicon carbon rod electric heating element according to claim 3, characterized in that the first through hole (102) is arranged at a position different from the connecting bridge (105) and the connecting positions of the first heating section (103) and the second heating section (104).

5. A porous Si-C rod electric heating element according to claim 4, characterized in that the connecting bridge (105) is a non-heat generating member; the first reinforcing ribs (101) are only arranged on the first heating section (103) and the second heating section (104), and the through holes (102) are not arranged on the connecting bridge (105).

6. A porous Si-C rod electric heating element according to claim 4, characterized in that the connecting bridge (105) is a tubular heat generating member; extend along its length direction on the lateral wall of connecting bridge (105) and be provided with a plurality of second strengthening ribs (106), it is a plurality of second strengthening rib (106) are followed the even interval in circumference of connecting bridge (105) sets up be different in on the lateral wall of connecting bridge (105) the position of second strengthening rib (106) is provided with a plurality of second through-holes (107).

7. A porous silicon carbon rod electric heating element according to claim 6, characterized in that the second through hole (107) is arranged at a position different from the position where the connecting bridge (105) is connected with the first heating section (103) and the second heating section (104).