Rapid-heating three-electrode metal ceramic heater

Abstract

A rapid heating three-electrode metal ceramic heater comprises an upper ceramic chip, a middle ceramic chip and a lower ceramic chip which are laminated, three receding through grooves are machined in one end of the upper ceramic chip, and a first live wire lead, a zero wire lead and a second live wire lead are sequentially arranged in the three receding through grooves. A first metal resistor pattern and first to third electrode patterns are arranged on the middle ceramic chip, the first electrode pattern and the third electrode pattern are respectively connected with two ends of the first metal resistor pattern, and the first to third electrode patterns are correspondingly and electrically connected with a first live wire lead, a zero wire lead and a second live wire lead; conductive through holes are formed in the second electrode pattern and the third electrode pattern, a second metal resistor pattern, a fourth electrode pattern and a fifth electrode pattern are arranged on the upper surface of the lower ceramic chip, the fourth electrode pattern and the fifth electrode pattern are connected with the two ends of the second metal resistor pattern respectively, and the fourth electrode pattern and the fifth electrode pattern are correspondingly connected with the second electrode pattern and the third electrode pattern through the conductive through holes respectively. The heating device has the characteristic of high heating efficiency.

Description

Technical Field

[0001] The utility model belongs to the field of power electronic components, and in particular relates to a three-electrode metal ceramic heater with rapid heating. Background Art

[0002] A metal-ceramic heater is a heating element manufactured using high-temperature co-firing of metal and ceramic. This heater is formed by printing a metal (high-melting-point) slurry onto a ceramic tape-cast body, laminating the layers through hot pressing, and then sintering them together under a high-temperature hydrogen atmosphere. Metal-ceramic heaters offer advantages such as corrosion resistance, high-temperature resistance, long life, high energy efficiency, uniform temperature, excellent thermal conductivity, and rapid thermal compensation. They also contain no harmful substances such as lead, cadmium, and mercury, complying with environmental standards.

[0003] At present, the metal ceramic heaters available on the market are two-electrode, consisting of an upper plate and a lower plate. Figure 1 This product has a single heating circuit and takes 60 seconds to heat up to the operating temperature of 230°C. It cannot meet the requirements of use in situations where rapid heating is required. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a three-electrode metal ceramic heater with reasonable structure, high power, safety, reliability and rapid heating.

[0005] The technical solution adopted to solve the above technical problems is: a three-electrode metal ceramic heater with rapid heating, comprising an upper ceramic sheet, a middle ceramic sheet, and a lower ceramic sheet stacked in sequence, three evenly distributed makeshift grooves processed at one end of the upper ceramic sheet, and a first live wire lead, a neutral wire lead, and a second live wire lead arranged in sequence in the three makeshift grooves, a first metal resistor pattern and a first electrode pattern, a second electrode pattern, and a third electrode pattern printed on the upper surface of the middle ceramic sheet, the first electrode pattern being connected to one end of the first metal resistor pattern, and the third electrode pattern being connected to the other end of the first metal resistor pattern, the first electrode pattern, the second electrode pattern, and the third electrode pattern being electrically connected to the first live wire lead, the neutral wire lead, and the second live wire lead one by one, the second electrode pattern and the third electrode pattern being both processed with conductive through holes, the upper surface of the lower ceramic sheet being printed with a second metal resistor pattern and a fourth electrode pattern and a fifth electrode pattern connected to both ends thereof respectively, the fourth electrode pattern being electrically connected to the second electrode pattern through a conductive through hole, and the fifth electrode pattern being electrically connected to the third electrode pattern through a conductive through hole.

[0006] As a preferred technical solution, both the first metal resistance pattern and the second metal resistance pattern are tungsten resistance patterns.

[0007] As a preferred technical solution, the first metal resistor pattern and the second metal resistor pattern are both strip-shaped and distributed in an S-shape.

[0008] As a preferred technical solution, the first electrode pattern, the second electrode pattern, the third electrode pattern, the fourth electrode pattern, and the fifth electrode pattern are all tungsten electrode patterns.

[0009] The beneficial effects of the utility model are as follows:

[0010] The heater of this utility model adopts a three-layer ceramic laminate structure and is provided with three electrodes, which enables the heater to reach the required operating temperature more quickly. It only takes 15 seconds to heat up to the operating temperature of 230°C. Compared with the existing technology, this significantly shortens the heating time and can meet the needs of applications requiring rapid temperature increase. This utility model does not contain harmful substances such as lead, cadmium, and mercury, meeting environmental protection requirements. The rationality of its structure and the high temperature resistance of the materials ensure the stability and durability of the heater, while also ensuring safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of an existing metal ceramic heater.

[0012] Figure 2 A schematic structural diagram of the present utility model.

[0013] Among them: upper ceramic sheet 1; middle ceramic sheet 2; lower ceramic sheet 3; third electrode pattern 4; second electrode pattern 5; first electrode pattern 6; conductive through holes 7 and 8; fifth electrode pattern 9; fourth electrode pattern 10; first live wire lead 11; neutral wire lead 12; second live wire lead 13; first metal resistor pattern 14; second metal resistor pattern 15. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and examples, but the present invention is not limited to the following embodiments.

[0015] exist Figure 2In the embodiment, the fast-heating three-electrode metal ceramic heater includes an upper ceramic sheet 1, a middle ceramic sheet 2, and a lower ceramic sheet 3 stacked in sequence. One end of the upper ceramic sheet 1 is processed with three evenly distributed through-grooves, and the three through-grooves are sequentially soldered with a first live wire lead 11, a neutral wire lead 12, and a second live wire lead 13. The upper surface of the middle ceramic sheet 2 is printed with a first metal resistor pattern 14 and a first electrode pattern 6, a second electrode pattern 5, and a third electrode pattern 4 in a strip shape and an S-shaped distribution. The first electrode pattern 6 is connected to one end of the first metal resistor pattern 14, and the third electrode pattern 4 is connected to the other end of the first metal resistor pattern 14. The first electrode pattern 6, the second electrode pattern 5, and the third electrode pattern 4 are electrically connected to the first live wire lead 11, the neutral wire lead 12, and the second live wire lead 13 respectively. The second electrode pattern 5 is processed with a conductive through-hole 8, and the third electrode pattern 4 is processed with a conductive through-hole 7. The upper surface of the lower ceramic sheet 3 is printed with a strip-shaped and S-shaped second metal resistor pattern 15 and a fourth electrode pattern 10 and a fifth electrode pattern 9 respectively connected to the two ends thereof. The fourth electrode pattern 10 is electrically connected to the second electrode pattern 5 through the conductive through-hole 8, and the fifth electrode pattern 9 is electrically connected to the third electrode pattern 4 through the conductive through-hole 7.

[0016] In this embodiment, the first metal resistor pattern 14 and the second metal resistor pattern 15 are both tungsten resistor patterns, and the first electrode pattern 6 , the second electrode pattern 5 , the third electrode pattern 4 , the fourth electrode pattern 10 , and the fifth electrode pattern 9 are all tungsten electrode patterns.

[0017] The working principle of this utility model is as follows:

[0018] A voltage of 120V is applied to the first live lead 11 and the neutral lead 12, and a voltage of 220V is applied to the neutral lead 12 and the second live lead 13. When the power is turned on, current flows through the first live lead 11 and the second live lead into the first metal resistance pattern 14 and the second metal resistance pattern 15, which generates heat and heats up the heater. Since the circuits of the middle ceramic sheet 2 and the lower ceramic sheet 3 are connected in parallel, the power of the heater is doubled, and it only takes 15 seconds to heat to the operating temperature of 230°C, which has the characteristic of high heating efficiency.

Claims

1. A three-electrode metal ceramic heater with rapid heating, characterized by: It includes an upper ceramic sheet, a middle ceramic sheet, and a lower ceramic sheet stacked in sequence. Three evenly distributed makeshift grooves are processed at one end of the upper ceramic sheet. The first live wire lead, the neutral wire lead, and the second live wire lead are arranged in sequence in the three makeshift grooves. The upper surface of the middle ceramic sheet is printed with a first metal resistor pattern and a first electrode pattern, a second electrode pattern, and a third electrode pattern. The first electrode pattern is connected to one end of the first metal resistor pattern, and the third electrode pattern is connected to the other end of the first metal resistor pattern. The first electrode pattern, the second electrode pattern, and the third electrode pattern are electrically connected to the first live wire lead, the neutral wire lead, and the second live wire lead respectively. Conductive through holes are processed on the second electrode pattern and the third electrode pattern. The upper surface of the lower ceramic sheet is printed with a second metal resistor pattern and a fourth electrode pattern and a fifth electrode pattern connected to both ends thereof respectively. The fourth electrode pattern is electrically connected to the second electrode pattern through a conductive through hole, and the fifth electrode pattern is electrically connected to the third electrode pattern through a conductive through hole.

2. The three-electrode metal ceramic heater with rapid temperature rise according to claim 1, characterized in that: The first metal resistance pattern and the second metal resistance pattern are both tungsten resistance patterns.

3. The three-electrode metal ceramic heater with rapid heating according to claim 1 or 2, characterized in that: The first metal resistor pattern and the second metal resistor pattern are both strip-shaped and distributed in an S-shape.

4. The three-electrode metal ceramic heater with rapid temperature rise according to claim 1, characterized in that: The first electrode pattern, the second electrode pattern, the third electrode pattern, the fourth electrode pattern, and the fifth electrode pattern are all tungsten electrode patterns.

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