CN215413061U - Special electromagnetic hot-blast stove fin heating pipe heat exchanger for grain dryer - Google Patents
Special electromagnetic hot-blast stove fin heating pipe heat exchanger for grain dryer Download PDFInfo
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- CN215413061U CN215413061U CN202121349745.0U CN202121349745U CN215413061U CN 215413061 U CN215413061 U CN 215413061U CN 202121349745 U CN202121349745 U CN 202121349745U CN 215413061 U CN215413061 U CN 215413061U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
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Abstract
The utility model provides a special electromagnetic hot blast stove fin heating pipe heat exchanger for a grain dryer, which comprises a cooling fan positioned below and a fin heating pipe heat exchanger positioned above; the high-temperature mica coil is sequentially wound in the inner cavity of N finned magnetic-conducting metal tubes in the finned heating tube heat exchanger; wherein the output end and the input and output ends of the high-temperature mica coil are both connected with a high-frequency generator, and a power supply sequentially passes through the overload safety protector and the air short-circuit switch and is sent into the high-frequency generator; and a high-temperature-resistant insulating tube is inserted between each finned magnetic conductive metal tube and the high-temperature mica coil. The utility model has the beneficial effects that: the EMI interference can be effectively shielded, the high-frequency noise pulse interference caused by the fact that the power supply connecting wire enters the equipment circuit can be isolated or filtered, the heat efficiency is improved, and the energy is saved.
Description
Technical Field
The utility model relates to an electromagnetic hot-blast stove for grain drying, in particular to a fin heating pipe heat exchanger of an electromagnetic hot-blast stove special for a grain dryer.
Background
At present, grain drying machines utilize electromagnetic hot-blast stoves to carry out hot-blast drying, utilize alternating current to produce alternating magnetic field, make the inside vortex that produces of metal conductor wherein to make finned metal tube generate heat rapidly, make up N finned metal tube, form an integral heater, pass through the fan with natural wind and cool off the heater, the hot-blast heat that produces from this is used for the heat source of grain drying. However, the heat energy generated at present is low in efficiency, and the energy consumption is increased.
Disclosure of Invention
In order to solve the problems, the utility model discloses a fin heating pipe heat exchanger of an electromagnetic hot blast stove special for a grain dryer, which utilizes alternating current to generate an alternating magnetic field and generates eddy current inside a metal conductor, so that the metal pipe with fins can rapidly heat and the heat efficiency is improved.
A kind of grain drier specialized electromagnetic hot-blast furnace fin heating tube heat exchanger, including the cooling blower located below and fin heating tube heat exchanger located above; the high-temperature mica coil is sequentially wound in the inner cavity of N finned magnetic-conducting metal tubes in the finned heating tube heat exchanger; wherein the output end and the input and output ends of the high-temperature mica coil are both connected with a high-frequency generator, and a power supply is sent into the high-frequency generator through an overload safety protector and an air short-circuit switch protector in sequence; and a high-temperature-resistant insulating tube is inserted between each finned magnetic conductive metal tube and the high-temperature mica coil.
The further improvement lies in that: the high-frequency generator adopts a high-speed IGBT driver and an AVR-based digital control chip.
The further improvement lies in that: the fins of the magnetic conductive metal tube with the fins are made of aluminum alloy.
The further improvement lies in that: wherein the air outlet of the cooling fan is provided with a dust removal plate to ensure clean air.
The working principle of the utility model is as follows: 1. the 380V alternating current power supply is connected, and is sent into a high-frequency generator through a load safety protector and an air short-circuit switch protector, and the high-frequency generator generates 5-40KHz high-frequency direct current and outputs the high-frequency direct current to the high-temperature mica coil; the high-temperature mica coil generates a high-frequency magnetic field, and the high-frequency magnetic field generated by the high-temperature mica wire enables the magnetic conductive metal tube with the fins to rapidly heat because the high-temperature mica wire is wound in the inner cavity of the magnetic conductive metal tube with the fins, so that the high temperature of 50-200 ℃ is generated; the cooling fan sends external natural cold air into the fin magnetic metal tube assembly, and high-temperature heat energy generated by the fin magnetic metal tube assembly is converted into high-temperature hot air to be sent into a required heating medium (grain).
2. Because the high-temperature cloud bus coil is wound on the inner surface of the finned magnetic-conducting metal cylinder, and a certain spacing distance is required between the coil and the metal cylinder due to the technical requirement of a magnetic field, a high-temperature-resistant insulating tube is inserted between the high-temperature mica coil and the finned magnetic-conducting metal cylinder, the high-temperature-resistant insulating tube has the function of the spacing distance, the finned magnetic-conducting metal cylinder can be enabled to radiate through the outer wall of the cylinder at high temperature, and the heat efficiency is improved.
3. The high-temperature mica wire wound magnetic conductive metal tube with the fins can effectively shield EMI interference and isolate or filter high-frequency noise pulse interference caused by the fact that a power supply connecting wire enters an equipment circuit.
The utility model has the beneficial effects that: the EMI interference can be effectively shielded, the high-frequency noise pulse interference caused by the fact that the power supply connecting wire enters the equipment circuit can be isolated or filtered, the heat efficiency is improved, and the energy is saved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a finned magnetically permeable metal tube;
list of reference numerals:
wherein 1-a high frequency generator; 2-high temperature mica coils; 3-a magnetic metal tube; 4-high temperature resistant insulating tube; 5-a cooling fan; 6-fin heating tube heat exchanger; 7-a power supply; 8-overload safety protector; 9-air short circuit switch protector; 5-1-dust removal plate.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the utility model and not as limiting the scope of the utility model. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1-2, the fin-heating pipe heat exchanger of the electromagnetic hot-blast stove special for the grain dryer of the present embodiment includes a cooling fan 5 located below and a fin-heating pipe heat exchanger 6 located above; wherein, a dust removal plate 5-1 is arranged at the air outlet of the cooling fan 5.
Wherein the high-temperature mica coil 2 is sequentially wound in the inner cavities of N finned magnetic-conducting metal tubes 3 in the finned heating tube heat exchanger 6; the magnetic conductive metal tube 3 with fins is made of aluminum alloy.
Wherein the output end and the input and output end of the high-temperature mica coil 2 are electrically connected with the high-frequency generator 1, and the power supply 7 is sent into the high-frequency generator 1 through an overload safety protector 8 and an air short-circuit switch protector 9 in sequence; and a high-temperature-resistant insulating tube 4 is inserted between each finned magnetic-conducting metal tube 3 and the high-temperature mica coil.
The high-frequency generator 1 adopts a high-speed IGBT driver and an AVR-based digital control chip; driving 100-300A 1200V IGBT module in the range of 10-100 KW; when the electromagnetic oven is overheated, the electromagnetic oven is shut down for protection, has the characteristic of small input current of a field effect transistor, has the characteristic of high current density and small voltage drop ratio of a bipolar transistor, and is commonly used in occasions such as an electromagnetic oven frequency converter.
A 380V alternating current power supply 7 is connected, and is sent into a high-frequency generator 1 through a load safety protector 8 and an air short-circuit switch protector 9, and 5-40KHz high-frequency direct current generated by the high-frequency generator 1 is output to a high-temperature mica coil 2; the high-temperature mica coil 2 generates a high-frequency magnetic field, and the high-temperature mica coil 2 is wound in the inner cavity of the finned magnetic-conducting metal tube 3, so that the finned magnetic-conducting metal tube 3 is rapidly heated by the high-frequency magnetic field generated by the high-temperature mica coil 2, and the high temperature of 50-200 ℃ is generated; the cooling fan 5 sends external natural cold air into the fin magnetic metal tube assembly, converts high-temperature heat energy generated by the fin magnetic metal tube assembly into high-temperature hot air, and sends the high-temperature hot air into a required heating medium (grain).
2. Because the high-temperature cloud bus coil is wound on the inner surface of the finned magnetic-conducting metal cylinder, and a certain spacing distance is required between the coil and the metal cylinder due to the technical requirement of a magnetic field, a high-temperature-resistant insulating tube is inserted between the high-temperature mica coil and the finned magnetic-conducting metal cylinder, the high-temperature-resistant insulating tube has the spacing distance function, the finned magnetic-conducting metal cylinder can be enabled to have the heat dissipation function through the outer wall of the cylinder at high temperature, and the heat efficiency is improved; the high-temperature mica coil 2 can effectively shield EMI interference in the magnetic conduction metal tube with the fins by winding, and isolate or filter high-frequency noise pulse interference of the power supply connecting lead entering the equipment circuit.
The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.
Claims (4)
1. The utility model provides a special electromagnetism hot-blast furnace fin heating pipe heat exchanger of grain drying-machine which characterized in that: comprises a cooling fan (5) positioned below and a fin heating pipe heat exchanger (6) positioned above; wherein the high-temperature mica coil (2) is sequentially wound in the inner cavity of N finned magnetic conductive metal tubes (3) in the finned heating tube heat exchanger (6); wherein the output end and the input and output ends of the high-temperature mica coil (2) are connected with the high-frequency generator (1), and the power supply (7) is sent into the high-frequency generator (1) through the overload safety protector (8) and the air short-circuit switch protector (9) in sequence; and a high-temperature-resistant insulating tube (4) is inserted between each finned magnetic conductive metal tube (3) and the high-temperature mica coil.
2. The special electromagnetic hot-blast stove fin heating pipe heat exchanger of claim 1, characterized in that: the high-frequency generator (1) adopts a high-speed IGBT driver and an AVR-based digital control chip.
3. The special electromagnetic hot-blast stove fin heating pipe heat exchanger of claim 1, characterized in that: the fins of the magnetic conductive metal tubes (3) with the fins are made of aluminum alloy.
4. The special electromagnetic hot-blast stove fin heating pipe heat exchanger of claim 1, characterized in that: wherein the air outlet of the cooling fan (5) is provided with a dust removal plate (5-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121349745.0U CN215413061U (en) | 2021-06-17 | 2021-06-17 | Special electromagnetic hot-blast stove fin heating pipe heat exchanger for grain dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121349745.0U CN215413061U (en) | 2021-06-17 | 2021-06-17 | Special electromagnetic hot-blast stove fin heating pipe heat exchanger for grain dryer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215413061U true CN215413061U (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121349745.0U Active CN215413061U (en) | 2021-06-17 | 2021-06-17 | Special electromagnetic hot-blast stove fin heating pipe heat exchanger for grain dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215413061U (en) |
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2021
- 2021-06-17 CN CN202121349745.0U patent/CN215413061U/en active Active
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