CN211702445U - Air current electromagnetic heating device - Google Patents
Air current electromagnetic heating device Download PDFInfo
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- CN211702445U CN211702445U CN202020735098.6U CN202020735098U CN211702445U CN 211702445 U CN211702445 U CN 211702445U CN 202020735098 U CN202020735098 U CN 202020735098U CN 211702445 U CN211702445 U CN 211702445U
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Abstract
The utility model discloses an air current electromagnetic heating device, including the tuber pipe that generates heat, the inside of the tuber pipe that generates heat is equipped with the heating plug, and the heating plug sets up with the tuber pipe coaxial line that generates heat, is equipped with heat exchanger between the inner wall of the heating plug and the tuber pipe that generates heat, still includes thermal-insulated shell, thermal-insulated shell cover the outer wall of the tuber pipe that generates heat, the outer wall of thermal-insulated shell is equipped with the coil, the inner wall of thermal-insulated shell with be formed with the passageway that is used for the air current to pass through between the tuber pipe outer wall that generates heat, the outer wall of the tuber pipe that generates heat is connected with a plurality of outer heat; because the heat of the outer wall of the heating air pipe is taken away by the airflow flowing through the channel between the outer wall of the heating air pipe and the inner wall of the heat insulation shell, the heat of the heating air pipe is prevented from being emitted to the external space by the airflow, and the heat insulation shell further prevents the heat from being dissipated to the external space, so that the airflow electromagnetic heating device of the embodiment is favorable for energy conservation.
Description
Technical Field
The utility model relates to an air current heating device field, concretely relates to air current electromagnetic heating device.
Background
An airflow heating device is a device for heating an airflow passing through the inside thereof. The existing airflow heating device is provided with a tubular heating air pipe, the heating air pipe is made of steel, a coil is wound outside the heating air pipe, when the coil is switched on by high-frequency alternating current, the coil generates a corresponding alternating magnetic field, the alternating magnetic field enables the heating air pipe to generate electromagnetic induction eddy current, so that the heating air pipe generates heat, and airflow flowing through the heating air pipe can be heated by the heating air pipe. However, a part of heat of the heating air duct is dissipated to the external space of the heating air duct, resulting in electric energy waste.
Disclosure of Invention
An object of the utility model is to overcome prior art not enough, provide an air current electromagnetic heating device, it is favorable to energy-conservation.
The purpose of the utility model is realized by the following technical scheme.
The utility model discloses an air current electromagnetic heating device, including the tuber pipe that generates heat, its characterized in that the inside of tuber pipe that generates heat is equipped with the plug that generates heat, the plug that generates heat with the tuber pipe coaxial line that generates heat sets up, the plug that generates heat with be equipped with heat exchanger between the inner wall of tuber pipe that generates heat;
the heating air pipe is characterized by also comprising a heat insulation shell, wherein the heat insulation shell is sleeved on the outer wall of the heating air pipe, the outer wall of the heat insulation shell is provided with a coil, and a channel for air flow to pass through is formed between the inner wall of the heat insulation shell and the outer wall of the heating air pipe;
the outer wall of the heating air pipe is connected with a plurality of outer heat conducting rods, and the heat insulation shell is connected with the heating air pipe in a sliding mode through the outer heat conducting rods.
Preferably, the heat exchanger includes a plurality of heat exchange fences, the heat exchange fences are arranged at intervals along the axis of the heating air pipe, the heat exchange fences include a plurality of inner heat conducting rods, one end of each inner heat conducting rod is fixedly connected with the outer wall of the heating core rod, the other end of each inner heat conducting rod is fixedly connected with the inner wall of the heating air pipe, and the inner heat conducting rods are arranged in a radial manner.
Preferably, the number of the heat insulation shells is at least two, shell flanges are arranged at the end parts of the heat insulation shells, and the shell flanges of the adjacent heat insulation shells are connected in an abutting mode through bolts.
Preferably, both ends of the heating core rod are provided with air guide conical heads.
Preferably, both ends of the heating air pipe are fixedly connected with flanges respectively.
Preferably, the heat exchanger includes a plurality of outer ring pieces, the outer ring pieces are arranged at intervals along the axis of the heating air pipe, the outer edge of the outer ring pieces is fixedly connected with the inner wall of the heating air pipe, the heat exchanger includes a plurality of inner ring pieces, the inner ring pieces are arranged at intervals along the axis of the heating air pipe, the inner edge of the inner ring pieces is fixedly connected with the outer wall of the heating core rod, and the outer ring pieces and the inner ring pieces are arranged at intervals.
Preferably, the heat exchanger comprises a spiral air deflector, the spiral air deflector and the heating core rod are coaxially arranged, and the spiral air deflector is fixedly connected with the outer wall of the heating core rod.
Compared with the prior art, the utility model, its beneficial effect is: through setting up thermal-insulated shell, thermal-insulated shell cover is in the outside of coil, be formed with the passageway that is used for the air current to pass through between the inner wall of thermal-insulated shell and the coil, the outer wall connection of tuber pipe that generates heat has a plurality of outer heat conduction poles, thermal-insulated shell is connected through outer heat conduction pole with the tuber pipe that generates heat, the heat of tuber pipe outer wall that generates heat has been taken away to the air current of the passageway between the inner wall that makes the flow through thermal-insulated shell and the coil, the heat that the tuber pipe that generates heat has also been separated to the while air current gives off to the exterior space, thermal-insulated shell further avoids the heat to scatter.
Drawings
Fig. 1 is a schematic diagram of the internal structure of the first embodiment of the present invention.
Fig. 2 is a left side view schematic diagram of an embodiment of the present invention.
Fig. 3 is an external structural diagram of a second embodiment of the present invention.
Fig. 4 is a schematic diagram of an internal structure of a third embodiment of the present invention.
Fig. 5 is a left side view schematically illustrating a third embodiment of the present invention.
Fig. 6 is a schematic view of an internal structure of a fourth embodiment of the present invention.
Fig. 7 is a schematic structural view of the flange of the present invention.
Description of reference numerals: 1-heating air pipe; 2-a coil; 3-heating core rod; 301-wind guiding conical head; 4-a heat exchanger; 41-a heat exchange fence; 401-inner heat conducting rod; 402-outer ring plates; 403-inner ring sheet; 404-a fixing bar; 405-a spiral wind deflector; 5-a flange; 501-connecting hole; 502-a connection plate; 6-outer heat conducting rod; 7-a thermally insulating shell; 701-shell flange; 8-bolt.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the air flow electromagnetic heating device of the present embodiment includes a heating air duct 1, the heating air duct 1 is cylindrical, the material of the heating air duct 1 is magnetic steel, such as "201 stainless steel" or ordinary carbon steel, and the inner diameter of the heating air duct 1 may be 350 mm to 400 mm, and the specific size is determined according to the actual application.
As shown in fig. 1, a heating core rod 3 is provided inside the heating duct 1, and the material of the heating core rod 3 is a magnetically conductive steel material, for example, "201 stainless steel" or ordinary carbon steel. The heating core rod 3 may have a hollow structure, which is advantageous for weight reduction. The heating core rod 3 and the heating air pipe 1 are arranged coaxially. A heat exchanger 4 is arranged between the heating core rod 3 and the inner wall of the heating air pipe 1, the heat exchanger 4 can allow air flow to pass through, and the air flow is in contact with the surface of the heat exchanger 4 to exchange heat. There are some heat exchangers for air flow, such as radiator of diesel generator, which is actually air flow heat exchanger, and the radiator is heated by coolant of diesel generator, and when air flow generated by fan passes through the radiator, the air flow contacts with the radiator to exchange heat, so as to heat the air flow; for example, a radiator of an automobile also belongs to an airflow heat exchanger, and it can be seen that the heat exchanger 4 can adopt various structural forms, but the basic principle is that airflow contacts with the surface of the heat exchanger 4 to exchange heat.
As shown in fig. 1, the heat insulation pipe also comprises a heat insulation shell 7, the heat insulation shell 7 is sleeved on the outer wall of the heat generation air pipe 1, the heat insulation shell 7 can be a heat insulation cylinder made of mica plates, so that the heat insulation shell 7 can play a role of insulation and heat insulation, and the thickness of the heat insulation shell 7 can be 5 mm to 10 mm. The coil 2 is arranged on the outer wall of the heat insulation shell 7, the coil 2 is directly wound on the outer wall of the heat insulation shell 7, and a channel for air flow to pass through is formed between the inner wall of the heat insulation shell 7 and the outer wall of the heating air pipe 1; the outer wall of the heating air duct 1 is connected with a plurality of outer heat conducting rods 6, the outer heat conducting rods 6 can be welded with the outer wall of the heating air duct 1, the heat insulating shell 7 is connected with the heating air duct 1 through the outer heat conducting rods 6 in a sliding manner, specifically, the heat insulating shell 7 can flexibly slide at the end part of the outer heat conducting rods 6 (i.e. the end far away from the end where the outer heat conducting rods 6 are welded with the outer wall of the heating air duct 1), for those skilled in the art, it should be clear that, in order to make the heat insulating shell 7 flexibly slide at the end part of the outer heat conducting rods 6, the end part of the outer heat conducting rods 6 can be processed into a hemispherical shape (not shown in the figure), the friction force between the heat insulating shell 7 and the end part of the outer heat conducting rods 6 is reduced by the end part of the hemispherical outer heat conducting rods 6, so that the heat insulating shell 7 flexibly slides on the outer, as shown in fig. 1, 2, 4 and 5. Meanwhile, since the heat insulating case 7 of the present embodiment is made of mica plate, there is a certain deformation, and the outer heat conducting rod 6 of the present embodiment may support the heat insulating case 7 in addition to conducting heat in order to make the heat insulating case 7 circular. The outer heat conducting rods 6 may be stainless steel round bars, the diameter of the outer heat conducting rods 6 may be 5 mm to 10 mm, as shown in fig. 2, the outer heat conducting rods 6 are circumferentially and uniformly distributed around the axis of the heat generating air duct 1, the number of the outer heat conducting rods 6 per circle may be 30 to 40, and as shown in fig. 1, the outer heat conducting rods 6 are arranged at intervals in the axis direction of the heat generating air duct 1, and the intervals may be 30 mm to 40 mm.
The operation principle of the air flow electromagnetic heating apparatus of the present embodiment is briefly described below: the airflow electromagnetic heating device is directly connected with an axial flow fan (not shown in the figure), or the airflow electromagnetic heating device is connected with an air pipe with airflow. The coil 2 is connected with high-frequency alternating current, and the high-frequency alternating magnetic field correspondingly generated by the coil 2 enables the heating air pipe 1 and the heating core rod 3 to generate electromagnetic induction eddy currents, so that the heating air pipe 1 and the heating core rod 3 generate heat, and the heating air pipe 1 and the heating core rod 3 simultaneously transfer the heat to the heat exchanger 4. The air current flows through the inside of the heating air pipe 1 and the channel between the heating air pipe 1 and the heat insulation shell 7 simultaneously, the air current is in heat exchange with the surface contact of the heat exchanger 4, the air current is also in contact with the inner wall of the heating air pipe 1 and the outer wall of the heating core rod 3 to be heated, the heat of the outer wall of the heating air pipe 1 is taken away by the air current flowing through the channel between the outer wall of the heating air pipe 1 and the inner wall of the heat insulation shell 7, meanwhile, the heat of the heating air pipe 1 is prevented from being emitted to the outer space by the air current, the heat insulation shell 7 further prevents the heat from being dissipated to the outer space, therefore, the air current electromagnetic heating device of the embodiment is beneficial to energy conservation, the heat insulation shell 7 also prevents people from being scalded by touch, because the surface of the coil 2 is in contact with the. In addition, partial heat of the outer wall of the heating air pipe 1 is transferred to the outer heat conducting rod 6, the outer heat conducting rod 6 also plays a role in increasing the contact area of air flow, and the increase of the contact area of the outer heat conducting rod and the air flow is beneficial to improving the heat exchange efficiency.
Further, the heat exchanger 4 includes a plurality of heat exchange fences 41, as shown in fig. 1, the heat exchange fences 41 are arranged at intervals along the axis of the heating air duct 1, as shown in fig. 2, the heat exchange fences 41 include a plurality of inner heat conduction rods 401, one end of each inner heat conduction rod 401 is fixedly connected with the outer wall of the heating core rod 3, the other end of each inner heat conduction rod 401 is fixedly connected with the inner wall of the heating air duct 1, the inner heat conduction rods 401 are arranged in a radial manner, the inner heat conduction rods 401 may be made of stainless steel round rods, the diameter of each inner heat conduction rod 401 may be 5 mm to 10 mm, the number of the inner heat conduction rods 401 in one circle may be 20 to 30, the pitch of the heat exchange fences 41 may be 30 to 40 mm, and the inner heat conduction rods 401 may be connected with the heating air duct 1. In this embodiment, when the heating air duct 1 and the heating core rod 3 generate heat, the inner heat conducting rod 401 is connected to the heating air duct 1 and the heating core rod 3, so that the inner heat conducting rod 401 is also heated, and the air flow contacts with the surface of the inner heat conducting rod 401 to perform heat exchange, so that the air flow is heated, the resistance of the air flow is increased by the inner heat conducting rod 401, the time for the air flow to pass through the heat exchanger 4 is longer, that is, the heating time is increased, and thus the temperature rise amplitude of the air flow is favorably improved. The heat exchanger 4 constituted by the inner heat conduction rod 401 has the following structural advantages over the prior art: the inner heat conducting rod 401 plays a role in supporting and fixing the heating core rod 3, and is small in wind resistance and suitable for application occasions with requirements on wind speed.
Furthermore, as shown in fig. 1, both ends of the heating core rod 3 are provided with air guiding conical heads 301, the tips of the air guiding conical heads 301 are outward, when the heating core rod 3 is cylindrical, the air guiding conical heads 301 are correspondingly set to be conical, and the air guiding conical heads 301 are concealed in the end surface range of the heating air pipe 1, so as to avoid collision and damage in the transportation process. Through setting up wind-guiding conical head 301, make the air current get into generate heat tuber pipe 1 time by wind-guiding conical head 301 water conservancy diversion and flow to heat exchanger 4, owing to the both ends of the plug 3 that generates heat all are equipped with wind-guiding conical head 301, so the air current can flow through generate heat tuber pipe 1 from a left side to the right side, also can flow through generate heat tuber pipe 1 from a right side to the left side.
Further, as shown in fig. 1 and 2, flanges 5 are respectively and fixedly connected to two ends of the heating air duct 1, and connection holes 501 are formed at four corners of the flanges 5, so that the airflow electromagnetic heating device can be conveniently connected with an external air duct. In order to avoid that the flange 5 covers the airflow channel formed between the inner wall of the heat insulation shell 7 and the outer wall of the heating air duct 1, as shown in fig. 7, four connecting plates 502 may be formed at the edges of the ventilation holes in the center of the flange 5, and the inner ends of the connecting plates 502 are welded to the end surface of the heating air duct 1.
In the second embodiment, the basic structure is similar to that of the above (first embodiment), and as shown in fig. 3, for the convenience of installation, the number of the heat insulating cases 7 of fig. 3 is three, the end portions of the heat insulating cases 7 are provided with case flanges 701, and the case flanges 701 of the adjacent heat insulating cases 7 are butted and connected by bolts 8. Through the arrangement, when the length of the airflow electromagnetic heating device needs to be set to be longer, for example, 4 meters to 8 meters long, the mica material is difficult to manufacture the heat insulation shell 7 with the length, so that the heat insulation shell 7 is set to be of the spliced structure, the manufacturing difficulty is favorably reduced, and the assembly is convenient.
In the third embodiment, as shown in fig. 4 and 5, the heat exchanger 4 comprises a plurality of outer ring plates 402, the outer ring plates 402 are arranged at intervals along the axis of the heat generating air duct 1, the outer edges of the outer ring plates 402 are fixedly connected with the inner wall of the heat generating air duct 1, the heat exchanger 4 further comprises a plurality of inner ring plates 403, the inner ring plates 403 are arranged at intervals along the axis of the heat generating air duct 1, the inner edges of the inner ring plates 403 are fixedly connected with the outer wall of the heating core rod 3, the outer ring plates 402 are arranged at intervals with the inner ring plates 403, the outer ring plates 402 and the inner ring plates 403 are both in a discoid shape with holes in the middle, the intervals between the outer ring plates 402 can be 100 mm to 160 mm, the intervals between the inner ring plates 403 can be 100 mm to 160 mm, the air flow is circulated between the outer ring plates 402 and the inner ring plates 403 from left to right as shown by the dotted arrows in fig. 4, the air flow is turbulent flow at this time, and then the air flow, the air flow is obstructed by the outer ring plate 402 and the inner ring plate 403, so that the flow rate is reduced, the heating time is longer, and the heating effect of the air flow is improved. The fixing rod 404 shown in fig. 4 and 5 serves to fixedly support the heating core rod 3, and the material of the fixing rod 404 may be a stainless steel rod.
In the fourth embodiment, as shown in fig. 6, the heat exchanger 4 includes a spiral air deflector 405, the spiral air deflector 405 is disposed coaxially with the heating core rod 3, and the spiral air deflector 405 is fixedly connected to the outer wall of the heating core rod 3. The spiral air deflector 405 may be made by stitch welding 0.5 to 1 mm thick stainless steel plates that have been bent into a curved surface. When the air flow passes through the heat exchanger 4 of the embodiment, the air flow is guided by the spiral air deflector 405 to form a spiral air flow, the air flow is in contact with the surface of the spiral air deflector 405 to perform heat exchange, the path of the spiral air flow inside the heating air duct 1 is greatly increased, and thus the heating time is longer, thereby being beneficial to improving the temperature rise effect of the air flow.
The structure of the heat exchanger 4 shown in fig. 1 is simple to manufacture and convenient to obtain, so that the heat exchanger is preferable.
Claims (7)
1. The utility model provides an air current electromagnetic heating device, includes heating tuber pipe (1), its characterized in that: a heating core rod (3) is arranged inside the heating air pipe (1), the heating core rod (3) and the heating air pipe (1) are coaxially arranged, and a heat exchanger (4) is arranged between the heating core rod (3) and the inner wall of the heating air pipe (1);
the heating air pipe is characterized by further comprising a heat insulation shell (7), wherein the heat insulation shell (7) is sleeved on the outer wall of the heating air pipe (1), a coil (2) is arranged on the outer wall of the heat insulation shell (7), and a channel for air flow to pass through is formed between the inner wall of the heat insulation shell (7) and the outer wall of the heating air pipe (1);
the outer wall of the heating air pipe (1) is connected with a plurality of outer heat conducting rods (6), and the heat insulation shell (7) is connected with the heating air pipe (1) in a sliding mode through the outer heat conducting rods (6).
2. The airflow electromagnetic heating device according to claim 1, characterized in that: the heat exchanger (4) comprises a plurality of heat exchange fences (41), the heat exchange fences (41) are arranged along the axis of the heating air pipe (1) at intervals, the heat exchange fences (41) comprise a plurality of inner heat conducting rods (401), one ends of the inner heat conducting rods (401) are fixedly connected with the outer wall of the heating core rod (3), the other ends of the inner heat conducting rods (401) are fixedly connected with the inner wall of the heating air pipe (1), and the inner heat conducting rods (401) are arranged in a radial mode.
3. The airflow electromagnetic heating device according to claim 1, characterized in that: the number of the heat insulation shells (7) is at least two, shell flanges (701) are arranged at the end parts of the heat insulation shells (7), and the shell flanges (701) of the adjacent heat insulation shells (7) are connected in an attached mode through bolts (8).
4. The airflow electromagnetic heating device according to claim 1, characterized in that: and two ends of the heating core rod (3) are provided with air guide conical heads (301).
5. The airflow electromagnetic heating device according to claim 1, characterized in that: and flanges (5) are respectively and fixedly connected with two ends of the heating air pipe (1).
6. The airflow electromagnetic heating device according to claim 1, characterized in that: the heat exchanger (4) comprises a plurality of outer ring pieces (402), the outer ring pieces (402) are arranged at intervals along the axis of the heating air pipe (1), the outer edge of each outer ring piece (402) is fixedly connected with the inner wall of the heating air pipe (1), the heat exchanger (4) comprises a plurality of inner ring pieces (403), the inner ring pieces (403) are arranged at intervals along the axis of the heating air pipe (1), the inner edges of the inner ring pieces (403) are fixedly connected with the outer wall of the heating core rod (3), and the outer ring pieces (402) and the inner ring pieces (403) are arranged at intervals.
7. The airflow electromagnetic heating device according to claim 1, characterized in that: the heat exchanger (4) comprises a spiral air deflector (405), the spiral air deflector (405) and the heating core rod (3) are coaxially arranged, and the spiral air deflector (405) is fixedly connected with the outer wall of the heating core rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020735098.6U CN211702445U (en) | 2020-05-07 | 2020-05-07 | Air current electromagnetic heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020735098.6U CN211702445U (en) | 2020-05-07 | 2020-05-07 | Air current electromagnetic heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211702445U true CN211702445U (en) | 2020-10-16 |
Family
ID=72783843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020735098.6U Active CN211702445U (en) | 2020-05-07 | 2020-05-07 | Air current electromagnetic heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211702445U (en) |
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2020
- 2020-05-07 CN CN202020735098.6U patent/CN211702445U/en active Active
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