Rare earth thick film composite kitchen heating barrel heater

Abstract

The application relates to the technical field of electric heating and discloses a rare earth thick film composite kitchen heating barrel heater, which comprises a metal base, a rare earth thick film heating layer, an insulating layer and a wiring assembly; the rare earth thick film heating layer is combined with the lower surface of the metal base through a mold to form an A heating area, a B heating area and two C heating areas, and the A heating area, the B heating area and the C heating areas are independent of each other; the insulating layer is covered on the outer surface of the rare earth thick film heating layer; and the wiring assembly comprises a common end and four welding wires, and the welding wires are electrically connected with the A heating area, the B heating area and the C heating areas through the common end. Through the mold combined structure of the rare earth thick film heating layer and the metal base, efficient heat conduction, flexible modeling, wide material adaptation and accurate temperature regulation are realized, and the problems of poor heat conduction effect, complex workmanship and narrow application range of a traditional electric heating wire heater are solved.

Description

Technical Field

[0001] This invention relates to the field of electric heating technology, specifically to a rare earth thick film composite kitchen heating tank heater. Background Technology

[0002] Currently, most kitchen heating drum heaters on the market use traditional electric heating wire structures. These heaters have significant technical drawbacks: first, they are complex to manufacture, involve numerous assembly steps, and have low production efficiency; second, there is significant thermal resistance between the heating wire and the bottom of the heating drum, resulting in poor heat conduction and low energy utilization; third, the shape design of the heating wire is limited, making it difficult to flexibly adjust the heating area according to actual needs; and fourth, the material of the object being heated is limited by the installation method of the heating wire, resulting in a narrow range of applications. Therefore, there is an urgent need to develop a new type of kitchen heating drum heater with high thermal conductivity, flexible design, and wide applicability. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a rare-earth thick-film composite kitchen heating barrel heater. Through a mold composite structure of a rare-earth thick-film heating layer and a metal substrate, it achieves efficient heat conduction, flexible shaping, wide material compatibility, and precise temperature regulation, thus solving the problems of poor heat conduction, complex manufacturing, and narrow applicability of traditional electric heating wire heaters.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a metal substrate, a rare-earth thick-film heating layer, an insulating layer, and a wiring assembly; the rare-earth thick-film heating layer is molded onto the lower surface of the metal substrate to form heating region A, heating region B, and two heating regions C, and heating regions A, B, and C are independent of each other; the insulating layer covers the outer surface of the rare-earth thick-film heating layer; the wiring assembly includes a common terminal and four welding wires, and the welding wires are electrically connected to heating regions A, B, and C respectively via the common terminal.

[0005] Furthermore, the heater has a rated voltage of 220V, a rated power of 6000±10%W, an operating temperature of 165℃, and a power density of 26.03W / cm².

[0006] Furthermore, the metal substrate is made of SUS443 or SUS430 stainless steel and has a thickness of 3.0±0.05mm.

[0007] Furthermore, the sheet resistance of the rare earth thick film heating layer is 27.34 mΩ.

[0008] Furthermore, the welding wire is a copper wire with a cross-sectional area of ​​2.5 mm², and the length of a single wire is 100 mm.

[0009] Furthermore, the heater meets the withstand voltage test requirements: under ambient temperature of 25℃ and humidity of 50±25%, it can withstand a voltage of 1500VAC and a current of 5mA for 3 seconds without breakdown.

[0010] Furthermore, the dimensional tolerance of the heater, unless otherwise specified, is ±0.1mm, and the general tolerance meets the IT5 level requirements in the GB / T1804-2000 standard.

[0011] Furthermore, the rare earth thick film heating layer is intact and undamaged, the metal substrate surface is clean and free of dirt, burrs, scratches, rust, pits, scratches, and the welding joints are free of oxidation and yellowing.

[0012] Furthermore, the rare earth thick film heating layer can be designed into any shape according to the heating requirements to adjust the heating area.

[0013] Furthermore, the heater is connected to an external temperature controller, through which the heating temperature is adjusted.

[0014] Furthermore, the heater is suitable for use with the bottom of kitchen heating buckets made of any material.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the present invention provides a rare earth thick film composite kitchen heating barrel heater, which achieves efficient heat conduction, flexible shape, wide material compatibility and precise temperature regulation through the mold composite structure of rare earth thick film heating layer and metal substrate, solving the problems of poor heat conduction, complicated workmanship and narrow application range of traditional electric heating wire heaters. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a cross-sectional view of the rare earth thick film layer and the insulating layer in this invention.

[0018] Explanation of reference numerals in the attached figures: 1. Metal substrate; 2. Rare earth thick film heating layer; 3. Heating area A 2-1; 4. Heating area B 2-2; 5. Heating area C 2-3; 6. Insulation layer; 7. Wiring assembly; 8. Common terminal 4-1; 9. Welding wire 4-2. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0020] See Figure 1 and Figure 2The rare-earth thick-film composite kitchen heating barrel heater provided in this embodiment uses SUS443 stainless steel as the metal substrate 1, with a thickness of 3.0mm (tolerance ±0.05mm). The rare-earth thick-film heating layer 2 is laminated onto the lower surface of the metal substrate 1 through a mold, forming conductive areas A heating area 2-1, B heating area 2-2, and two C heating areas 2-3. The sheet resistance of the rare-earth thick-film heating layer 2 is 27.34mΩ. An insulating layer 3 covers the outer surface of the rare-earth thick-film heating layer 2, providing electrical insulation and physical protection. The wiring assembly 4 includes a common terminal 4-1 and four welding wires 4-2. The welding wires 4-2 are copper wires with a cross-sectional area of ​​2.5mm², and each wire is 100mm long. The four welding wires 4-2 are electrically connected to the A heating area 2-1, B heating area 2-2, and two C heating areas 2-3 respectively via the common terminal 4-1.

[0021] The heater in this embodiment has a rated voltage of 220V, a rated power of 6000W (tolerance ±10%), an operating temperature of 165℃, and a power density of 26.03W / cm².

[0022] The heater in this embodiment meets the following technical requirements: it can withstand 1500VAC voltage and 5mA current for 3 seconds without breakdown under ambient temperature of 25℃ and humidity of 50%; the dimensional tolerance unless otherwise specified is ±0.1mm, and the general tolerance meets the IT5 level requirements in GB / T1804-2000 standard; the surface of the metal substrate 1 is clean and free of dirt, burrs, scratches and rust, the rare earth thick film heating layer 2 is intact without pits or scratches, and the solder joints of the wiring assembly 4 are free of oxidation and yellowing.

[0023] In this embodiment, the heater can achieve heating temperature adjustment within the range of 0-165℃ through an external temperature controller. The rare earth thick film heating layer 2 can be designed into any shape such as round, square or irregular according to the heating requirements of the heating barrel to adjust the heating area, and can be laminated to the bottom of the kitchen heating barrel made of any material such as stainless steel, aluminum alloy, ceramic. Example

[0024] The difference between this embodiment and Embodiment 1 is that the metal substrate 1 is made of SUS430 stainless steel with a thickness of 3.05mm (within a tolerance range of 3.0±0.05mm). The rated power of the heater in this embodiment is 5400W (6000W with a tolerance of -10%), and the rest of the structure, parameters, and technical requirements are exactly the same as in Embodiment 1. Example

[0025] The difference between this embodiment and Embodiment 1 is that the thickness of the metal substrate 1 is 2.95 mm (within a tolerance range of 3.0 ± 0.05 mm). The rated power of the heater in this embodiment is 6600 W (6000 W + 10% tolerance value), and the rest of the structure, parameters and technical requirements are exactly the same as in Embodiment 1.

[0026] Compared with the prior art, the beneficial effects of the present invention are: 1. High thermal conductivity: The rare earth thick film heating layer is directly laminated onto the metal substrate through a mold, eliminating the contact thermal resistance between the traditional heating wire and the substrate, resulting in fast heat conduction and significantly improved energy utilization.

[0027] 2. Flexible design: The rare earth thick film heating layer can be designed into any shape according to actual heating needs, and the heating area can be flexibly adjusted to adapt to heating barrels of different specifications and shapes.

[0028] 3. Wide range of applications: The heater can be integrated into the bottom of kitchen heating tanks made of any material, and the object being heated is not limited by material.

[0029] 4. Temperature controllable: The heating temperature can be precisely adjusted through an external temperature controller to meet the needs of different cooking and heating scenarios.

[0030] 5. Simple production process: Compared with traditional electric heating wire heaters, it eliminates complex assembly processes, resulting in high production efficiency and good product consistency.

[0031] 6. Excellent safety performance: It meets the stringent withstand voltage test requirements, the insulation layer provides reliable protection, and the surface is free of burrs, rust, and other safety hazards.

[0032] 7. Long service life: The rare earth thick film heating layer has stable performance, the film layer is not easily damaged, the solder joints do not oxidize and turn yellow, and the product service life is significantly extended.

[0033] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A rare earth thick-film composite kitchen heating tank heater, characterized in that: It includes a metal substrate (1), a rare earth thick film heating layer (2), an insulating layer (3), and a wiring assembly (4); the rare earth thick film heating layer (2) is molded onto the lower surface of the metal substrate (1) to form a heating area A (2-1), a heating area B (2-2), and two heating areas C (2-3), and the heating areas A (2-1), B (2-2), and C (2-3) are independent of each other; the insulating layer (3) covers the outer surface of the rare earth thick film heating layer (2), and the wiring assembly (4) includes a common terminal (4-1) and four welding wires (4-2), and the welding wires (4-2) are electrically connected to the heating areas A (2-1), B (2-2), and C (2-3) respectively through the common terminal (4-1).

2. The rare earth thick film composite kitchen heating tank heater according to claim 1, characterized in that: The heater has a rated voltage of 220V, a rated power of 6000±10%W, an operating temperature of 165℃, and a power density of 26.03W / cm².

3. The rare earth thick film composite kitchen heating tank heater according to claim 1, characterized in that: The metal substrate (1) is made of SUS443 or SUS430 stainless steel and has a thickness of 3.0±0.05mm.

4. The rare earth thick film composite kitchen heating tank heater according to claim 1, characterized in that: The sheet resistance of the rare earth thick film heating layer (3) is 27.34 mΩ.

5. The rare earth thick film composite kitchen heating tank heater according to claim 1, characterized in that: The welding wire is a copper wire with a cross-sectional area of ​​2.5 mm², and the length of a single wire is 100 mm.

6. The rare earth thick film composite kitchen heating tank heater according to claim 1, characterized in that: The heater meets the withstand voltage test requirements: under ambient temperature of 25℃ and humidity of 50±25%, it can withstand a voltage of 1500VAC and a current of 5mA for 3 seconds without breakdown.

7. The rare earth thick film composite kitchen heating tank heater according to claim 1, characterized in that: The rare earth thick film heating layer (2) is designed in any shape according to the heating requirements in order to adjust the heating area.

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