A high frequency heating device for high frequency tempering

Abstract

The utility model discloses a kind of high-frequency heating devices for high-frequency tempering, including high-frequency heating unit, the high-frequency heating unit is covered with heat insulation protective cover, heat energy store and the control store separated from the heat energy store are equipped in the heat insulation protective cover, the heat insulation protective cover is used to cut off heat energy loss in high-frequency heating unit and prevent heat damage from occurring, the heat insulation protective cover includes cover body, aerogel heat insulation intermediate layer being equipped in the inner surface of the cover body, high reflectivity metal inner layer being equipped on the aerogel heat insulation intermediate layer and ceramic fiber outer layer being equipped in the outer surface of cover body;High-frequency heating unit includes high-frequency power module, induction heating coil group, control module, control module is electrically connected with high-frequency power module, induction heating coil group respectively, the utility model solves the problem that heat energy loss is serious due to high-intensity radiant heat by heat insulation protective cover, reaches the effect of reducing heat energy loss, improving heating efficiency and reducing thermal pollution to surrounding environment.

Description

Technical Field

[0001] This utility model relates to the technical field of heating devices, and specifically to a high-frequency heating device for high-frequency tempering. Background Technology

[0002] Tempering technology is a key step in metal heat treatment processes and is widely used in various industries such as automobile manufacturing, aerospace, and precision machinery. It improves the mechanical and processing properties of workpieces by rapidly raising their temperature to the tempering range. Currently, high-frequency tempering mainly relies on high-frequency heating devices. These devices typically include core components such as high-frequency power supply modules, induction heating coil groups, and control modules. They can efficiently convert electrical energy into heat energy and generate eddy currents inside the workpiece through the principle of induction heating, thus causing it to heat up on its own. They have significant advantages such as fast heating speed, high thermal efficiency, and ease of localized heating and automated control.

[0003] However, existing high-frequency tempering and high-frequency heating devices still have insufficient heat insulation effects, especially when facing the high-intensity radiant heat generated by the high-frequency heating device, the heat energy is seriously lost, which not only reduces the heating efficiency, but may also cause thermal pollution to the surrounding environment. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a high-frequency heating device for high-frequency tempering. This device utilizes a multi-layered composite insulation system: an aerogel insulation interlayer in the heat-insulating protective cover blocks heat conduction; a high-reflectivity metal inner layer reflects the radiant heat generated by the high-frequency heating unit; and a ceramic fiber outer layer further inhibits heat conduction. This solves the problem of severe heat loss caused by high-intensity radiant heat in existing high-frequency heating devices, achieving the effects of reducing heat loss, improving heating efficiency, and reducing thermal pollution to the surrounding environment. By placing the high-frequency power module and control module in a control compartment isolated from the heat energy compartment, the interference of heat generated by the high-frequency heating unit on the control module is solved, achieving the effects of protecting the control module, improving equipment stability, and extending service life. Furthermore, by using a snap-fit ​​connection to fix the ceramic fiber outer layer, aerogel insulation interlayer, and high-reflectivity metal inner layer to the cover body, the problem of reduced insulation effect due to insecure installation or gaps in the insulation layer is solved, ensuring that each layer is tightly fitted without gaps, effectively blocking heat conduction and radiant heat loss.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-frequency heating device for high-frequency tempering includes a high-frequency heating unit for continuously providing a high heat source. The high-frequency heating unit is covered by a heat-insulating protective cover. The heat-insulating protective cover contains a heat energy chamber and a control chamber isolated from the heat energy chamber. The heat-insulating protective cover is used to prevent heat loss from the high-frequency heating unit and to prevent thermal damage. The heat-insulating protective cover includes a cover body, an aerogel heat-insulating intermediate layer disposed on the inner surface of the cover body, a high-reflectivity metal inner layer disposed on the aerogel heat-insulating intermediate layer, and a ceramic fiber outer layer disposed on the outer surface of the cover body. The ceramic fiber outer layer, the aerogel heat-insulating intermediate layer, and the high-reflectivity metal inner layer are connected by a snap-fit ​​connection. The heat exchange chamber on the cover body has heat dissipation holes on its top, and adjustable dampers are installed on these holes to dissipate heat from the heat exchange chamber. The cover body serves as a supporting frame for the heat insulation protective cover. The aerogel insulation intermediate layer blocks heat conduction, the high-reflectivity metal inner layer reflects the radiant heat generated by the high-frequency heating unit, and the ceramic fiber outer layer further suppresses heat conduction. The high-frequency heating unit includes a high-frequency power supply module, an induction heating coil group, and a control module. The control module is electrically connected to the high-frequency power supply module and the induction heating coil group, respectively. The induction heating coil group is located inside the heat exchange chamber, and the high-frequency power supply module and the control module are both located inside the control chamber.

[0006] Several infrared thermometers are embedded in the inner wall of the thermal energy chamber. The infrared thermometers have a temperature measurement range of 200-1200℃, an accuracy of ±1℃, and a response time of ≤100ms. The infrared thermometers are electrically connected to the control module.

[0007] The snap-fit ​​connection consists of several dovetail grooves provided inside the cover body, which, when an elastic locking element is inserted into the dovetail groove, form a mechanical interlock.

[0008] The thermal energy chamber has an access channel on one side, which is used to facilitate the loading and unloading of workpieces.

[0009] The control compartment has an operation window, which is used to install the intelligent operation panel of the control module.

[0010] The length and width of the high-reflectivity metal inner layer are adapted to the inner wall size of the heat energy chamber. There is an overlap between adjacent high-reflectivity metal inner layers to completely cover the area inside the heat energy chamber that is in direct contact with the radiant heat of the high-frequency heating unit. The thickness is set between 0.2 and 0.5 mm.

[0011] The thickness of the aerogel insulation interlayer is set between 5 and 10 mm, and it is cut into a square shape that fits perfectly with the inner surface of the cover body, so that the aerogel insulation interlayer has sufficient insulation thickness.

[0012] The outer layer of ceramic fiber is tightly bonded to the cover body by an adhesive.

[0013] The induction heating coil assembly includes a heating coil and an electrically connected high-frequency transformer. The heating coil includes an aluminum nitride substrate, a wire harness wound on the aluminum nitride substrate, and a flange located on one side of the aluminum nitride substrate.

[0014] The aluminum nitride substrate includes a winding body and a mounting plate connected to the winding body via a connecting portion.

[0015] The beneficial effects of this utility model are as follows: 1. Through the multi-layer composite insulation measures of blocking heat conduction with the aerogel insulation middle layer in the heat insulation protective cover, reflecting the radiant heat generated by the high-frequency heating unit with the high reflectivity metal inner layer, and further inhibiting heat conduction with the ceramic fiber outer layer, the effect of reducing heat loss, improving heating efficiency and reducing heat pollution to the surrounding environment is achieved. 2. By placing the high-frequency power supply module and control module in a control compartment that is separated from the thermal energy compartment, the control module is protected, the equipment stability is improved, and the service life is extended. 3. By using a snap-fit ​​connection to fix the outer ceramic fiber layer, the middle aerogel insulation layer, and the inner high reflectivity metal layer to the cover body, the effect of ensuring that each layer fits tightly and without gaps is achieved, effectively blocking heat conduction and radiative heat loss. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 This is a perspective view of the high-frequency power supply module, control module, and high-frequency transformer of this utility model.

[0019] Figure 4 This is a perspective view of the heat insulation protective cover of this utility model.

[0020] Figure 5 This is an internal assembly drawing of the high-frequency heating unit of this utility model.

[0021] Figure 6 This is a perspective view of the heating coil of this utility model.

[0022] Figure 7 This is a longitudinal sectional view of the high-frequency heating unit and heat insulation protective cover of this utility model.

[0023] Explanation of icon numbers: 1-High-frequency heating unit, 10-High-frequency power supply module, 11-Induction heating coil group, 110-Heating coil, 111-High-frequency transformer, 12-Control module, 2-Infrared thermometer, 3-Heat insulation protective cover, 30-Cover body, 300-Dovetail groove, 31-Aerogel heat insulation intermediate layer, 32-High reflectivity metal inner layer, 33-Ceramic fiber outer layer, 4-Heat energy chamber, 40-Heat dissipation hole, 41-Adjustable damper, 42-Inlet / outlet channel, 5-Control chamber, 50-Operating window, 6-Elastic locking component. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-7 As shown, this utility model relates to a high-frequency heating device for high-frequency tempering, including a high-frequency heating unit 1, which continuously provides a high heat source. The high-frequency heating unit 1 is covered by a heat insulation protective cover 3. The heat insulation protective cover 3 has a heat energy chamber 4 and a control chamber 5 separated from the heat energy chamber 4 inside. The heat insulation protective cover 3 is used to prevent heat loss from the high-frequency heating unit 1 and prevent thermal damage. The heat insulation protective cover 3 includes a cover body 30, an aerogel heat insulation intermediate layer 31 disposed on the inner surface of the cover body 30, a high reflectivity metal inner layer 32 disposed on the aerogel heat insulation intermediate layer 31, and a ceramic fiber outer layer 33 disposed on the outer surface of the cover body 30. The ceramic fiber outer layer 33, the aerogel heat insulation intermediate layer 31, and the high reflectivity metal inner layer 32 are fixed to the cover body 30 by snap-fit ​​connection. The heat energy chamber 4 of the cover body 30 has a heat dissipation hole 40 on the top, and a heat dissipation hole 40 is installed on the heat dissipation hole 40. An adjustable damper 41 is provided for heat dissipation from the heat chamber 4. The cover body 30 serves as the supporting frame for the heat insulation protective cover 3. The aerogel heat insulation intermediate layer 31 is used to block heat conduction. The high reflectivity metal inner layer 32 is used to reflect the radiant heat generated by the high-frequency heating unit 1. The ceramic fiber outer layer 33 is used to further suppress heat conduction. The high-frequency heating unit 1 includes a high-frequency power supply module 10, an induction heating coil group 11, and a control module 12. The control module 12 is electrically connected to the high-frequency power supply module 10 and the induction heating coil group 11, respectively. The induction heating coil group 11 is located inside the heat chamber 4. The high-frequency power supply module 10 and the control module 12 are both located inside the control chamber 5. Several infrared thermometers 2 are embedded on the inner wall of the heat chamber 4. The infrared thermometers 2 have a temperature measurement range of 200-1200℃, an accuracy of ±1℃, and a response time of ≤100ms. The infrared thermometers 2 are electrically connected to the control module 12. The snap-fit ​​connection consists of several dovetail grooves 300 provided inside the cover body 30. After the elastic locking member 6 is inserted into the dovetail groove 300, a mechanical interlock is formed. The thermal energy chamber 4 has an inlet / outlet channel 42 on one side, which is used to facilitate the loading and unloading of workpieces. The control chamber 5 has an operation window 50, which is used to install the intelligent operation panel of the control module 12.

[0025] like Figure 7 As shown, the length and width of the high-reflectivity metal inner layer 32 are adapted to the inner wall dimensions of the heat energy chamber 4. There is an overlap between adjacent high-reflectivity metal inner layers 32 to completely cover the area inside the heat energy chamber 4 that is in direct contact with the radiant heat of the high-frequency heating unit 1. The thickness is set between 0.2-0.5 mm to ensure sufficient reflectivity without increasing the overall weight of the heat insulation cover 3 or occupying too much space due to excessive thickness. The high-reflectivity metal inner layer 32 uses aluminum as the base material. Aluminum has the characteristics of low density, low cost and good reflectivity. First, the aluminum material is treated with acid washing and alkali washing chemical methods to remove the oxide layer and impurities on the surface. Then, an anodizing process is used to form a uniform and dense aluminum oxide film on the surface of the aluminum material to improve the corrosion resistance of the aluminum material and enhance the reflectivity of radiant heat. A 50-100 nanometer thick aluminum film is deposited on the surface of the aluminum oxide film using physical vapor deposition (PVD) to give the aluminum film extremely low surface roughness and improve the reflectivity of radiant heat.

[0026] like Figure 7 As shown, the thickness of the aerogel insulation intermediate layer 31 is set between 5 and 10 mm. The aerogel insulation intermediate layer 31 uses silica aerogel as a base. Silica sol is prepared by the sol-gel method and then subjected to supercritical drying in a supercritical drying equipment to obtain a silica aerogel block with high porosity, large specific surface area and low density. The block is then cut into a cube shape that fits perfectly with the inner surface of the cover body 30, so that the aerogel insulation intermediate layer 31 has sufficient insulation thickness. This ensures that the aerogel insulation intermediate layer 31 has sufficient insulation thickness to block heat conduction, while also preventing the overall heat insulation protective cover 3 from becoming too bulky due to excessive thickness.

[0027] like Figure 7 As shown, the ceramic fiber outer layer 33 is tightly bonded to the cover body 30 by an adhesive. The ceramic fiber outer layer 33 uses aluminosilicate ceramic fiber as the base. First, the aluminosilicate ceramic fiber raw material is finely screened and pretreated to remove impurities and unqualified fibers, ensuring the purity and uniformity of the raw material. Then, the pretreated ceramic fiber is mixed evenly with an appropriate amount of organic binder and inorganic binder through vacuum forming, and then placed in a mold for forming. The formed blank is dried to remove moisture, and then sintered in a high-temperature sintering furnace. The length and width of the ceramic fiber outer layer 33 are set to be slightly larger than the corresponding part of the cover body 30 by 2-3 mm to ensure that it can completely cover the cover body 30 without gaps after installation. The thickness is between 8-15 mm to ensure the insulation thickness and reduce heat conduction efficiency.

[0028] like Figure 1-7As shown, the induction heating coil assembly 11 includes a heating coil 110 and an electrically connected high-frequency transformer 111. The heating coil 110 includes an aluminum nitride substrate, a wire bundle wound on the aluminum nitride substrate, and a flange located on one side of the aluminum nitride substrate. The aluminum nitride substrate includes a winding body and a mounting plate connected to the winding body via a connecting part. The aluminum nitride substrate provides stable support for the wire bundle wound on it. The winding body facilitates the orderly winding of the wire bundle to form a specific electromagnetic field. The mounting plate, which is fixedly connected to the connecting part, installs the heating coil 110 in the heat energy chamber 4 via the flange. The heating coil 110 generates an alternating magnetic field when powered by the high-frequency power module 10. When the workpiece is placed in this magnetic field, an induced current (eddy current) is generated inside the workpiece, thereby causing the workpiece to heat up. The high-frequency transformer 111 is used to regulate the voltage. The high-frequency transformer 111 is installed in the control chamber 5 and converts the electrical energy output by the high-frequency power module 10 into electrical energy parameters suitable for the operation of the heating coil 110, converting the electrical energy into heat energy to perform high-frequency tempering heating treatment on the workpiece.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, without departing from the design spirit of the present utility model, any equivalent changes or modifications made by those skilled in the art to the structure, features and principles of the present utility model should fall within the protection scope of the patent application of the present utility model.

Claims

1. A high-frequency heating device for high-frequency tempering, comprising a high-frequency heating unit for continuously providing a high heat source, characterized in that: The high-frequency heating unit is covered by a heat-insulating protective cover. Inside the heat-insulating protective cover is a heat energy chamber and a control chamber isolated from it. The heat-insulating protective cover is used to prevent heat loss from the high-frequency heating unit and to prevent thermal damage. The heat-insulating protective cover includes a cover body, an aerogel heat-insulating intermediate layer on the inner surface of the cover body, a high-reflectivity metal inner layer on the aerogel heat-insulating intermediate layer, and a ceramic fiber outer layer on the outer surface of the cover body. The ceramic fiber outer layer, the aerogel heat-insulating intermediate layer, and the high-reflectivity metal inner layer are fixed to the cover body by snap-fit ​​connections. A diffuser is provided at the top of the heat energy chamber of the cover body. The heat dissipation vents are equipped with adjustable dampers for dissipating heat from the heat energy chamber. The cover body serves as the supporting frame for the heat insulation protective cover. The aerogel insulation intermediate layer blocks heat conduction, the high-reflectivity metal inner layer reflects the radiant heat generated by the high-frequency heating unit, and the ceramic fiber outer layer further suppresses heat conduction. The high-frequency heating unit includes a high-frequency power supply module, an induction heating coil group, and a control module. The control module is electrically connected to the high-frequency power supply module and the induction heating coil group, respectively. The induction heating coil group is located inside the heat energy chamber, and the high-frequency power supply module and the control module are both located inside the control chamber.

2. The high-frequency heating device for high-frequency tempering according to claim 1, characterized in that: Several infrared thermometers are embedded in the inner wall of the thermal energy chamber. The infrared thermometers have a temperature measurement range of 200-1200℃, an accuracy of ±1℃, and a response time of ≤100ms. The infrared thermometers are electrically connected to the control module.

3. The high-frequency heating device for high-frequency tempering according to claim 1, characterized in that: The snap-fit ​​connection consists of several dovetail grooves provided inside the cover body, which, when an elastic locking element is engaged in the dovetail groove, form a mechanical interlock.

4. The high-frequency heating device for high-frequency tempering according to claim 1, characterized in that: The thermal energy chamber has an access channel on one side, which is used to facilitate the loading and unloading of workpieces.

5. A high-frequency heating device for high-frequency tempering according to claim 1, characterized in that: The control compartment has an operation window, which is used to install the intelligent operation panel of the control module.

6. A high-frequency heating device for high-frequency tempering according to claim 1, characterized in that: The length and width of the high-reflectivity metal inner layer are adapted to the inner wall size of the heat energy chamber. There is an overlap between adjacent high-reflectivity metal inner layers to completely cover the area inside the heat energy chamber that is in direct contact with the radiant heat of the high-frequency heating unit. The thickness is set between 0.2 and 0.5 mm.

7. A high-frequency heating device for high-frequency tempering according to claim 1, characterized in that: The thickness of the aerogel insulation interlayer is set between 5 and 10 mm, and it is cut into a square shape that fits perfectly with the inner surface of the cover body, so that the aerogel insulation interlayer has sufficient insulation thickness.

8. A high-frequency heating device for high-frequency tempering according to claim 1, characterized in that: The outer layer of ceramic fiber is tightly bonded to the cover body by an adhesive.

9. A high-frequency heating device for high-frequency tempering according to claim 1, characterized in that: The induction heating coil assembly includes a heating coil and an electrically connected high-frequency transformer. The heating coil includes an aluminum nitride substrate, a wire harness wound on the aluminum nitride substrate, and a flange located on one side of the aluminum nitride substrate.

10. A high-frequency heating device for high-frequency tempering according to claim 9, characterized in that: The aluminum nitride substrate includes a winding body and a mounting plate connected to the winding body via a connecting portion.

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