High-efficiency variable-frequency electromagnetic hot-air heater
The electromagnetic hot air furnace, with its frequency conversion control and double insulation layer design, solves the problems of poor insulation and difficult disassembly and assembly, improves thermal energy utilization and heating effect, and facilitates maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI YUEPU ELECTRIC CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-05
AI Technical Summary
Existing electromagnetic hot air furnaces suffer from poor heat preservation and energy efficiency, and are difficult to disassemble and maintain, resulting in low thermal energy utilization and low heat conversion rate.
The electromagnetic heating structure is controlled by a frequency converter, combined with a stepped electromagnetic heating design and a double insulation layer structure, which prolongs the residence time of air in the furnace and improves the thermal energy utilization rate. The air flow path is optimized through a multi-stage cavity design.
It achieves higher thermal energy utilization and heating effect, and its structural design facilitates disassembly and maintenance.
Smart Images
Figure CN224327352U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electromagnetic hot air equipment technology, and in particular to a high-efficiency variable frequency electromagnetic hot air heater. Background Technology
[0002] A hot blast stove is a type of thermodynamic machinery that has become a replacement for electric and traditional steam power sources in many industries. As a type of hot blast stove, the electromagnetic heating hot blast stove is a device that converts electrical energy into heat energy using the principle of electromagnetic induction. It uses a high-frequency, high-voltage current flowing through a coil to generate a high-speed alternating magnetic field. When the magnetic lines of force within the magnetic field pass through a magnetically conductive metal material, countless small eddy currents are generated within the metal, causing the metal material itself to heat up rapidly, thereby heating the material inside the metal cylinder.
[0003] In existing technologies, electromagnetic heating, also known as electromagnetic induction heating, is a technology that works by generating an alternating magnetic field through electronic circuitry. When an iron-containing container is placed on top, the container's surface cuts the alternating magnetic field lines, generating an alternating current (eddy current) in the metal part at the bottom of the container. This eddy current causes charge carriers at the bottom of the container to move at high speed and randomly. The collisions and friction between these charge carriers and atoms generate heat, thus heating the food. Because the iron container itself generates heat, the heat conversion rate is exceptionally high, reaching up to 95%, making it a direct heating method. Induction cookers, induction stoves, and electromagnetic rice cookers all utilize electromagnetic heating technology.
[0004] Publication No.: CN215864050U A variable frequency electromagnetic hot air furnace energy-saving system includes an air inlet pipe and a furnace body. One end of the air inlet pipe is closed, and the furnace body is inserted into the air inlet pipe. The outer wall of the furnace body is connected to the inner wall of the air inlet pipe via a support rod. An air supply mechanism is installed at the end of the furnace body located inside the air inlet pipe. An electromagnetic coil is wound around the outer wall of the end of the furnace body located inside the air inlet pipe. A heating plate is installed inside the furnace body. Existing electromagnetic hot air furnaces have certain drawbacks in use. The device cannot effectively maintain heat, resulting in poor energy-saving effects and inconvenience for users. While increasing the airflow path (heat exchange path) and residence time within the furnace can achieve sufficient heat exchange, it does not improve thermal energy utilization and thus fails to enhance the heating effect of the electromagnetic hot air furnace. Furthermore, the device is difficult to disassemble and maintain, causing adverse effects on users. Utility Model Content
[0005] The purpose of this invention is to provide a high-efficiency variable frequency electromagnetic hot air heater, which solves the problems of poor thermal control, inability to achieve sufficient heat exchange, and reduced thermal energy utilization of ordinary electromagnetic hot air heaters.
[0006] The technical solution adopted by this utility model to solve its technical problem is: a high-efficiency variable frequency electromagnetic hot air heater, including a heating chamber structure, an electromagnetic heating structure disposed in the heating chamber structure, an air inlet cavity structure disposed at the rear end of the heating chamber structure, an external base structure disposed at the front end of the heating chamber structure, and a variable frequency controller. The heating chamber structure includes an outer shell, a heating chamber, a heat insulation layer structure disposed in the outer heating chamber, a heating component connection structure disposed in the outer heating chamber, and a mounting bracket disposed at the lower part of the outer shell. The air inlet cavity structure includes a docking sleeve connected to the heating chamber structure, an air inlet chamber disposed at the rear end of the docking sleeve, an air inlet duct disposed in the air inlet chamber, and a blower disposed at the rear end of the air inlet chamber.
[0007] The heating component connection structure includes an end connection seat assembly located in the outer heating chamber, an inner connection column assembly arranged in a ring radial distribution, and a bottom inner connection platform.
[0008] The insulation layer structure includes an insulation layer connecting sleeve disposed between the outer heating chamber and the outer shell, an outer insulation layer disposed outside the insulation layer connecting sleeve, and an inner fireproof insulation layer disposed inside the insulation layer connecting sleeve.
[0009] The electromagnetic heating structure includes an inner grid frame for the electromagnetic heater located in the inner connecting column assembly, and an electromagnetic heating coil located in the inner grid frame for the electromagnetic heater.
[0010] The external base structure includes a connecting base located at the outer end of the external heating chamber, an air outlet located in the connecting base, a locking seat assembly located outside the connecting base, and a mounting sleeve located outside the air outlet.
[0011] The beneficial effects of this utility model are as follows: the heating temperature of the electromagnetic heating structure can be controlled by the frequency converter; the stepped electromagnetic heating structure can control the temperature of the processing stage; the double insulation layer design improves the heat energy utilization rate; and the overall multi-stage cavity design extends the air residence time in the furnace, thereby improving the heating effect of the electromagnetic hot air furnace.
[0012] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 for Figure 1 A schematic diagram of its internal structure.
[0015] Figure 3 for Figure 1 A schematic diagram of the electromagnetic heating structure.
[0016] Figure 4 for Figure 1 A schematic diagram of the structure of the insulation layer.
[0017] In the diagram: 1. Outer shell, 2. Heating chamber, 3. Mounting bracket, 4. Connecting sleeve, 5. Air inlet chamber, 6. Inner air inlet duct, 7. Blower, 8. End connecting seat assembly, 9. Inner connecting column assembly, 10. Bottom inner connecting platform, 11. Insulation layer connecting sleeve, 12. Outer insulation layer, 13. Inner fireproof insulation layer, 14. Electromagnetic heater inner connecting mesh frame, 15. Electromagnetic heating coil, 16. Connecting seat, 17. Air outlet, 18. Locking seat set, 19. Mounting sleeve, 20. Frequency converter. Detailed Implementation
[0018] The terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" used in the application text to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] Example 1, such as Figure 1-4 As shown, a high-efficiency variable frequency electromagnetic hot air heater includes a heating chamber structure, an electromagnetic heating structure disposed in the heating chamber structure, an air inlet cavity structure disposed at the rear end of the heating chamber structure, an external base structure disposed at the front end of the heating chamber structure, and a variable frequency controller 20. The heating chamber structure includes an outer shell 1, a heating chamber 2, an insulation layer structure disposed in the outer heating chamber, a heating component connection structure disposed in the outer heating chamber, and a mounting bracket 3 disposed at the lower part of the outer shell. The air inlet cavity structure includes a docking sleeve 4 connected to the heating chamber structure, an air inlet chamber 5 disposed at the rear end of the docking sleeve, an air inlet duct 6 disposed in the air inlet chamber, and a blower 7 disposed at the rear end of the air inlet chamber.
[0021] The heating component connection structure includes an end connection seat group 8 located in the outer heating chamber, an inner connection column group 9 arranged in a ring radial distribution, and a bottom inner connection platform 10.
[0022] The insulation layer structure includes an insulation layer connecting sleeve 11 disposed between the outer heating chamber and the outer shell, an outer insulation layer 12 disposed outside the insulation layer connecting sleeve, and an inner fireproof insulation layer 13 disposed inside the insulation layer connecting sleeve.
[0023] The electromagnetic heating structure includes an inner grid frame 14 of the electromagnetic heater located in the inner connecting column group and an electromagnetic heating coil 15 located in the inner grid frame of the electromagnetic heater.
[0024] The external base structure includes a connecting base 16 located at the outer end of the external heating chamber, an air outlet 17 located in the connecting base, a locking base sleeve 18 located outside the connecting base, and a mounting sleeve 19 located outside the air outlet.
[0025] The electromagnetic hot air heater structure can control the heating temperature of the electromagnetic heating structure according to the frequency converter. The stepped electromagnetic heating structure can control the temperature of the processing stage. The double insulation layer design improves the heat energy utilization rate. The overall multi-stage cavity design extends the air residence time in the furnace and improves the heating effect of the electromagnetic hot air furnace.
[0026] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
[0027] The parts not covered in this utility model are the same as or can be implemented using existing technologies.
Claims
1. A high-efficiency variable frequency electromagnetic hot air heater, characterized in that: The device includes a heating chamber structure, an electromagnetic heating structure disposed within the heating chamber structure, an air inlet cavity structure disposed at the rear end of the heating chamber structure, an external mounting structure disposed at the front end of the heating chamber structure, and a frequency converter. The heating chamber structure includes an outer shell, a heating chamber, an insulation layer structure disposed within the outer heating chamber, a heating component connection structure disposed within the outer heating chamber, and a mounting bracket disposed at the lower part of the outer shell. The air inlet cavity structure includes a docking sleeve connected to the heating chamber structure, an air inlet chamber disposed at the rear end of the docking sleeve, an air inlet duct disposed within the air inlet chamber, and a blower disposed at the rear end of the air inlet chamber.
2. The high-efficiency variable frequency electromagnetic hot air heater as described in claim 1, characterized in that: The heating component connection structure includes an end connection seat assembly located in the outer heating chamber, an inner connection column assembly arranged in a ring radial distribution, and a bottom inner connection platform.
3. The high-efficiency variable frequency electromagnetic hot air heater as described in claim 1, characterized in that: The insulation layer structure includes an insulation layer connecting sleeve disposed between the outer heating chamber and the outer shell, an outer insulation layer disposed outside the insulation layer connecting sleeve, and an inner fireproof insulation layer disposed inside the insulation layer connecting sleeve.
4. The high-efficiency variable frequency electromagnetic hot air heater as described in claim 2, characterized in that: The electromagnetic heating structure includes an inner grid frame for the electromagnetic heater located in the inner connecting column assembly, and an electromagnetic heating coil located in the inner grid frame for the electromagnetic heater.
5. The high-efficiency variable frequency electromagnetic hot air heater as described in claim 1, characterized in that: The external base structure includes a connecting base located at the outer end of the external heating chamber, an air outlet located in the connecting base, a locking seat assembly located outside the connecting base, and a mounting sleeve located outside the air outlet.