Gas heating device and gas heating pipe

Abstract

The present invention relates to the field of gas heating technology, in particular to a gas heating device, including an electric heating element, wherein the electric heating element is multiple; the gas heating device has a shell, an electrode group, the electric heating element is at least partially located in the shell, the multiple electric heating elements are arranged at intervals, there are at least two electrode groups, the electrode groups are located on both sides of the electric heating element, each electrode group has multiple electrode heads, each electrode head corresponds to each electric heating element, each electrode head is limited or fixedly arranged with each electric heating element, and the electrode group is fixed to the shell; the gas heating device has a plurality of channels, the plurality of channels are located between the outer wall of the electric heating element and the wall of the shell and / or are located inside the electric heating element. The device has a simple structure and is easy to assemble.

Description

Technical Field

[0001] The present invention relates to the technical field of gas heating, and in particular to a gas heating device and a gas heating tube. Background Art

[0002] Traditional gas heating uses resistance wire heating, which is not only inefficient and wastes electricity, but also has a complex structure. Summary of the invention

[0003] The purpose of the present invention is to solve the defect of the complicated structure of the gas heating device in the prior art, and to propose a gas heating device and a gas heating tube.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A gas heating device comprises an electric heating element, wherein there are multiple electric heating elements; the gas heating device comprises a shell and an electrode group, wherein the electric heating element is at least partially located in the shell, wherein the multiple electric heating elements are arranged at intervals, wherein there are at least two electrode groups, wherein the electrode groups are located on both sides of the electric heating element, wherein each electrode group comprises multiple electrode heads, wherein each electrode head corresponds to each electric heating element, wherein each electrode head is limited or fixedly arranged with each electric heating element, and wherein the electrode group is fixed to the shell; the gas heating device comprises a plurality of channels, wherein the plurality of channels are located between the outer wall of the electric heating element and the wall of the shell and / or inside the electric heating element.

[0006] Several of the electric heating elements are in the form of electric heating tubes, the outer walls of the electric heating tubes are provided with nanofilms, the diameters of the several electric heating tubes are substantially the same, and the electric heating tubes are coaxially arranged with the shell; the electric heating tubes are distributed in a ring array, and the electric heating tubes are arranged to radiate radially outward from the center; or the electric heating tubes are distributed in a regular polygonal array; the flow area of ​​the several channels is smaller than the equivalent inner diameter of the shell.

[0007] The electrode group comprises a plurality of electrode heads and a connecting wall, each electrode head is arranged in contact with each electric heating element, and the connecting wall connects each electrode head; the electric heating elements are connected in parallel.

[0008] The electrode group can transfer current to the electric heating element. The connecting wall has a flange portion, which connects the electrode heads of the electrode group close to the shell wall. The gas heating device has an electrical connection bracket, which is electrically connected to the flange portion.

[0009] The gas heating device comprises an insulating ring and a supporting ring, wherein the insulating ring is disposed at the end of the shell, the insulating ring is located between the supporting ring and the shell, and the electrode group is fixedly assembled with the insulating ring;

[0010] The gas heating device comprises bolts and nuts, which fix the shell to the insulating rings and support rings at the upper and lower ends thereof. The electric heating element group is fixedly assembled with the shell through the electrode groups at the upper and lower ends.

[0011] The connecting wall has a flange portion, which is connected to the electrode head of the electrode group close to the shell wall. The inner circumferential wall of the insulating ring is provided with an annular groove, and the flange portion is at least partially clamped in the annular groove.

[0012] The electrode head includes a barrel and a second inner edge. The barrel is sleeved on the end of the electric heating element. The second inner edge is located at one end of the barrel. The second inner edge extends radially inward along the barrel. The end of the electric heating element abuts against the second inner edge.

[0013] The shell is a cylindrical structure with two ends open, and the two ends of the shell are folded inwardly along the radial direction of the shell to form a first inner edge, and the inner circumference of the first inner edge is integrally formed with a plurality of first protrusions, and the first protrusions are provided with through holes;

[0014] The inner circumferential wall of the insulating ring is integrally formed with a second protrusion corresponding to the first protrusion, the second protrusion is provided with a through hole, a notch is left between every two flange parts, the number of the notches is the same as the number of the first protrusions, and the notch is directly opposite to the positions of the first protrusion and the second protrusion;

[0015] The support ring includes an annular plate, the inner circumference of which is provided with a third protrusion corresponding to the first protrusion, the third protrusion is provided with a through hole, the bolt passes through the first protrusion, the second protrusion and the third protrusion to connect and fix the shell to the insulating rings and the support ring at the upper and lower ends of the shell; the outer circumference of the annular plate is integrally formed with an arc edge folded along the axial direction of the annular plate.

[0016] The power connection bracket includes a ring portion and a rod portion, a plurality of rod portions are located around the ring portion, a side of the annular groove away from the electric heating element is connected to a plug hole with a number and position corresponding to the rod portion, the rod portion is inserted into the plug hole, and the rod portion is in contact with the flange portion;

[0017] The power connection bracket is fixedly equipped with a power connection part, and the power connection part is provided with a wiring installation hole.

[0018] A gas heating pipe comprises a pipe fitting and a gas heating device as described in the above technical solution, wherein the gas heating device is fixedly arranged on the inner wall of the pipe fitting, and several channels of the gas heating device communicate with parts of the pipe fitting located on both sides of the gas heating device.

[0019] The gas heating device and gas heating tube proposed in the above technical solution have the following beneficial effects: the gas heating device has a shell, an electric heating element, and an electrode group, the electrode group is located on both sides of the electric heating element, each electrode head corresponds to each electric heating element and is limited or fixed, the electrode group is fixed to the shell, and several channels of the gas heating device are located between the outer wall of the electric heating element and the wall of the shell and / or inside the electric heating element. In this way, the heating device has a simple structure and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of a half-section structure of the structure;

[0022] Figure 3 for Figure 1 A schematic diagram of the shell structure of the structure;

[0023] Figure 4 for Figure 1 A schematic diagram of the electrode group structure of the structure;

[0024] Figure 5 for Figure 1 A schematic diagram of the structure of the power connection bracket of the structure;

[0025] Figure 6 for Figure 1 A schematic diagram of the insulating ring structure of the structure;

[0026] Figure 7 for Figure 1 A schematic diagram of the support ring structure of the structure;

[0027] Figure 8 for Figure 1 A schematic diagram of a cross-sectional structure of an electrode head of the structure;

[0028] Fig. 9 for Figure 6 Schematic diagram of partial enlarged structure;

[0029] Fig.10 It is a simplified schematic diagram of another embodiment of the present invention.

[0030] In the figure: shell 1, bolt 2, insulating ring 3, supporting ring 4, electric heating element 5, electrode group 6, power connection part 7, power connection bracket 8, first inner edge 9, first protrusion 10, rod 11, ring 12, electrode head 13, notch 14, flange part 15, connecting wall 16, barrel 17, second inner edge 18, second protrusion 19, jack 20, annular groove 21, arc edge 22, annular plate 23, third protrusion 24, electric heating element group 25. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figure 1-9 A gas heating device 100 includes an electric heating element 5, the electric heating element 5 has a substrate and a nanofilm, the nanofilm is arranged on the substrate, and the substrate is made of quartz, glass, ceramic, insulated metal tube and other materials. There are multiple electric heating elements 5, multiple electric heating elements 5 are placed side by side, several electric heating elements 5 are distributed in a ring shape, and the electric heating elements 5 are arranged to radiate radially outward from the center; or the electric heating elements can be distributed in a regular polygonal array, and multiple electric heating elements 5 form an electric heating element group 25. As an embodiment, several electric heating elements can be in the form of electric heating tubes, the electric heating elements are coaxially arranged with the shell, and a channel is also formed inside the electric heating element, so that the gas can be heated through the inside of the electric heating element, or can also be heated when passing between the outer wall of the electric heating element and the inner wall of the shell.

[0033] The gas heating device 100 also includes a shell 1, and the electric heating element group 25 is at least partially arranged inside the shell 1. Multiple electric heating elements are arranged at intervals, and multiple electric heating elements are arranged coaxially with the shell. The gas heating device 100 has a plurality of channels 30, and the plurality of channels 30 are located between the outer wall of the electric heating element 5 and the wall of the shell 1 and / or located inside the electric heating element 5. The flow area of ​​the plurality of channels 30 is smaller than the equivalent inner diameter of the shell 1. When the gas passes through the gas heating device 100, since the electric heating element of the gas heating device uses a nanofilm as a heating resistor, the heating speed is fast. Since there are multiple electric heating elements arranged at intervals inside the shell, when the gas passes through the channel, the gas can be quickly heated by the electric heating element, so that it has a very high temperature when it leaves the gas heating device. By controlling the heating power, the gas can be quickly heated to above 100°C, such as 150°C, 200°C, 250°C, 300°C, 350°C, etc., which can be used for structures requiring high temperature gas; of course, the gas can also be quickly heated to about 50°C, and this lower temperature can be used for structures such as hair dryers. In addition, since the gas entering the shell is heated separately by multiple electric heating element structures, the gas inside the entire shell is heated evenly and the heating effect is excellent.

[0034] The gas heating device 100 includes at least two electrode groups 6, the electrode group 6 has a plurality of electrode heads and connecting walls, each electrode head corresponds to each electric heating element, and each electrode head is arranged in contact with each electric heating element, and each electrode head is limited or fixed to each electric heating element, for example, the electrode head can be sleeved on the end of the electric heating element.

[0035] The connecting wall is connected to each electrode head, and the external power supply is electrically connected to the electric heating element through the electrode head, and each electric heating element is connected in parallel. The electric heating element is fixed by the electrode heads at both ends, and the electrode group is fixed to the shell again, and such a structure is simple and easy to assemble. In addition, the electric heating element is connected in parallel by the electrode heads, so that each electric heating element can emit roughly the same amount of heat after being energized, so that the gas in the channel between the outer wall of the electric heating element and the wall of the shell and / or the gas inside the electric heating element can be heated relatively evenly, so that the gas passing through the gas heating device can be heated quickly after passing through, and the heating is also relatively even. Moreover, the shell 1 is arranged on the periphery of the electric heating element group 25, which also plays a role in protecting the electric heating element group 25 and plays a supporting role at the same time.

[0036] The gas heating device 100 has an insulating ring 3 and a support ring 4. The insulating ring 3 is placed at the end of the shell 1, and the insulating ring 3 is located between the support ring 4 and the shell 1. The electrode group 6 is fixedly assembled with the insulating ring 3; the gas heating device includes bolts 2 and nuts. The bolts 2 and nuts fix the shell 1 and the insulating ring 3 and the support ring 4 at the upper and lower ends of the shell 1. The position of the electric heating component group 25 is fixedly assembled with the shell 1 through the electrode groups 6 at the upper and lower ends.

[0037] The electric heating component group 25 is surrounded by the shell 1, the insulating ring 3 is clamped between the shell 1 and the support ring 4, and then the insulating ring 3 and the support ring 4 are fixed to the shell 1 by bolts and nuts. The electric heating component group 25 is clamped between the upper and lower electrode groups 6, and the electrode group 6 and the insulating ring 3 are fixedly assembled. In this way, the position between the electric heating component 5 and the shell 1 is relatively fixed, and the conductive parts of the support ring 4, the shell 1, and the bolt 2 are separated from the electrode group 6 and the electric heating component 5 by the insulating ring 3 to ensure the safety of electricity use.

[0038] As one embodiment, the electric heating element 5 is provided with a nano-membrane, and the electrode group 6 is in contact with the electric heating film of the electric heating element 5. As another embodiment, the electric heating element 5 has a nano-membrane and an electrode area, the electrode area is located at both ends of the nano-membrane, the electrode area partially covers the nano-membrane, and the electrode group 6 is in contact with the electrode area.

[0039] The insulating ring 3 is placed at the end of the shell 1, the support ring 4 is placed on the side of the insulating ring 3 away from the support ring 4, the electrode group 6 is fixedly assembled with the insulating ring 3, and the shell 1 is connected and fixed with the insulating ring 3 and the support ring 4 at its upper and lower ends by bolts 2 and nuts. The position of the electric heating element group 25 is fixedly assembled with the shell 1 through the electrode groups 6 at the upper and lower ends.

[0040] refer to Figure 4 , Figure 8The number and position of the electrode heads 13 correspond to the electric heating element 5. Several electrode heads 13 are connected together by a connecting wall 16. The connecting wall 16 has a flange portion 15. The flange portion 15 is connected to the electrode heads 13 in the electrode group 6 close to the wall of the shell 1. An annular groove 21 is opened on the inner circumferential wall of the insulating ring 3. The flange portion 15 is at least partially clamped in the annular groove 21.

[0041] The electrode head 13 includes a barrel 17 and a second inner edge 18. The barrel 17 is sleeved on the end of the electric heating element 5. The second inner edge 18 is located at one end of the barrel 17. The second inner edge 18 extends radially inward along the barrel 17. The end of the electric heating element 5 abuts against the second inner edge 18. In this way, the electrode head 13 can simply connect multiple electric heating elements 5 in parallel. The assembly is simple and convenient, and the connection structure is more stable and reliable.

[0042] The shell 1 can be a cylindrical structure with openings at both ends. The two ends of the shell 1 are folded inward along the radial direction of the shell to form a first inner edge 9. The first inner edge 9 better supports the insulating ring 3, improves the stability of the connection, and reduces the wall thickness of the shell 1. A plurality of first protrusions 10 are integrally formed on the inner circumference of the first inner edge 9, and the first protrusions 10 are provided with through holes; wherein folding inward refers to folding inward toward the center of the shell.

[0043] The flange part 15 is arranged at multiple intervals, and the inner circumferential wall of the insulating ring 3 is integrally formed with a second protrusion 19 corresponding to the first protrusion 10. The second protrusion 19 is provided with a through hole, and a notch 14 is left between every two flange parts 15. The number of the notches 14 is the same as the number of the first protrusion 10. The notch 14 is directly opposite to the position where the first protrusion 10 and the second protrusion 19 are located. The notch 14 is provided to ensure that the bolt 2 will not contact the flange part 15 when passing through the protrusion, thereby preventing the screw from conducting electricity;

[0044] The support ring 4 includes an annular plate 23, and a third protrusion 24 corresponding to the first protrusion 10 is provided on the inner circumference of the annular plate 23. The third protrusion 24 is provided with a through hole. The bolt 2 passes through the first protrusion 10, the second protrusion 19, and the third protrusion 24 to connect and fix the shell 1 and the insulating ring 3 and the support ring 4 at the upper and lower ends of the shell 1, and the insulating ring 3 is pressed onto the shell 1 through the support ring 4.

[0045] An arc-shaped edge 22 folded along the axial direction of the annular plate 23 is integrally formed on the outer circumference of the annular plate 23 . The axially protruding arc-shaped edge 22 improves the bending strength of the annular plate 23 .

[0046] The gas heating device also includes an electrical connection bracket 8, which is electrically connected to the flange portion. The electrical connection bracket 8 includes a ring portion 12 and a rod portion 11, and a plurality of rod portions 11 are located circumferentially of the ring portion 12. The side of the annular groove 21 away from the electric heating element 5 is connected to a socket 20 with a number and position corresponding to the rod portion 11. The rod portion 11 is inserted into the socket 20, and the rod portion 11 is in contact with the flange portion 15. The electrical connection bracket 8 is fixedly assembled with the electrical connection portion 7, and the electrical connection portion 7 is provided with a wiring installation hole. The external power supply is connected through the electrical connection bracket 8, and a plurality of rod portions 11 in contact with the flange portion 15 are provided to ensure the stability of the conduction.

[0047] The gas heating device can be applied in many occasions, for example, it can be applied to hair dryers, or it can also be used for heating special gases in industry, or it can be used for preheating gases in the chemical field, etc.

[0048] As an implementation method, Fig.10 A gas heating pipe 200 is briefly illustrated, comprising a pipe fitting 101 and a gas heating device 100. The gas heating device 100 is fixed to the inner wall of the pipe fitting 101. Several channels of the gas heating device 100 connect the parts of the pipe fitting 101 located on both sides of the gas heating device 100. This gas heating pipe can be used for heating gases in industrial or chemical fields.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technical solution, conception, and design obtained by equivalent replacement or modification of the technical solution and inventive concept of the present invention by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A gas heating device, comprising an electric heating element, characterized in that: There are multiple electric heating elements; the gas heating device has a shell and an electrode group, the electric heating element is at least partially located in the shell, the multiple electric heating elements are arranged at intervals, there are at least two electrode groups, the electrode groups are located on both sides of the electric heating element, each electrode group has multiple electrode heads, each electrode head corresponds to each electric heating element, each electrode head is limited or fixedly arranged with each electric heating element, and the electrode group is fixed to the shell; the gas heating device has a plurality of channels, the plurality of channels are located between the outer wall of the electric heating element and the wall of the shell and / or are located inside the electric heating element; The electrode group has a connecting wall, each electrode head is arranged in contact with each electric heating element, and the connecting wall connects each electrode head; the electric heating elements are connected in parallel; The gas heating device comprises an insulating ring (3) and a supporting ring (4), wherein the insulating ring (3) is placed at the end of the shell (1), the insulating ring (3) is located between the supporting ring (4) and the shell (1), and the electrode group (6) is fixedly assembled with the insulating ring (3); The gas heating device comprises bolts (2) and nuts, wherein the bolts (2) and nuts fix the housing (1) to the insulating rings (3) and the support rings (4) at the upper and lower ends thereof, and the electric heating element group (25) is fixedly assembled with the housing (1) through the electrode groups (6) at the upper and lower ends; The shell (1) is a cylindrical structure with two ends open, and the two ends of the shell (1) are folded inwardly along the radial direction of the shell to form a first inner edge (9), and the inner circumference of the first inner edge (9) is integrally formed with a plurality of first protrusions (10), and the first protrusions (10) are provided with through holes; The inner circumferential wall of the insulating ring (3) is integrally formed with a second protrusion (19) corresponding to the first protrusion (10); the second protrusion (19) is provided with a through hole; a notch (14) is left between every two flange portions (15); the number of the notches (14) is the same as the number of the first protrusions (10); and the notches (14) are directly opposite to the positions of the first protrusion (10) and the second protrusion (19); The support ring (4) comprises an annular plate (23), the inner circumference of which is provided with a third protrusion (24) corresponding to the first protrusion (10), the third protrusion (24) being provided with a through hole, the bolt (2) passing through the first protrusion (10), the second protrusion (19), and the third protrusion (24) to connect and fix the housing (1) to the insulating ring (3) and the support ring (4) at the upper and lower ends of the housing; the outer circumference of the annular plate (23) is integrally formed with an arc-shaped edge (22) folded along the axial direction of the annular plate.

2. A gas heating device according to claim 1, characterized in that: The plurality of electric heating elements (5) are in the form of electric heating tubes, the outer walls of the electric heating tubes are provided with nanofilms, the diameters of the plurality of electric heating tubes are substantially the same, and the electric heating tubes are coaxially arranged with the shell; the electric heating tubes are distributed in a ring array, and the electric heating tubes are arranged to radiate radially outward from the center; or the electric heating tubes are distributed in a regular polygonal array; the flow area of ​​the plurality of channels is smaller than the equivalent inner diameter of the shell.

3. The gas heating device according to claim 1, characterized in that: The electrode group (6) can transmit current to the electric heating element (5), the connecting wall has a flange portion, the flange portion is connected to the electrode head of the electrode group close to the shell wall, and the gas heating device has an electrical connection bracket (8), and the electrical connection bracket (8) is electrically connected to the flange portion.

4. A gas heating device according to claim 1, characterized in that: The connecting wall has a flange portion, the flange portion is connected to the electrode head of the electrode group close to the shell wall, the inner circumferential wall of the insulating ring (3) is provided with an annular groove (21), and the flange portion (15) is at least partially clamped in the annular groove (21).

5. A gas heating device according to claim 1 or 2, characterized in that: The electrode head (13) comprises a barrel (17) and a second inner edge (18); the barrel (17) is sleeved on the end of the electric heating element (5); the second inner edge (18) is located at one end of the barrel (17); the second inner edge (18) extends radially inward along the barrel (17); and the end of the electric heating element (5) abuts against the second inner edge (18).

6. A gas heating device according to claim 3, characterized in that: The power connection bracket (8) comprises a ring portion (12) and a rod portion (11), a plurality of rod portions (11) are located in the circumferential direction of the ring portion (12), an annular groove (21) is provided on the inner circumferential wall of the insulating ring (3), the side of the annular groove (21) away from the electric heating element (5) is connected to a plug hole (20) having a number and position corresponding to the rod portion (11), the rod portion (11) is inserted into the plug hole (20), and the rod portion (11) is in contact with the flange portion (15); The power connection bracket (8) is fixedly equipped with a power connection portion (7), and the power connection portion (7) is provided with a wiring installation hole.

7. A gas heating pipe, comprising a pipe fitting, characterized in that: It also includes a gas heating device according to any one of claims 1 to 6, wherein the gas heating device is fixed to the inner wall of the pipe, and a plurality of channels of the gas heating device are connected to parts of the pipe located on both sides of the gas heating device.

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