CN-122002653-A - Mica ceramic heating plate and assembly method thereof

CN122002653ACN 122002653 ACN122002653 ACN 122002653ACN-122002653-A

Abstract

The invention discloses a mica ceramic heating plate and an assembling method thereof, belonging to the technical field of electric heating equipment, wherein the heating plate comprises a plate body component, the plate body component comprises an upper plate cover and a lower plate seat, one end of the lower plate seat is provided with a mounting groove matched with the upper plate cover, the other end of the lower plate seat is provided with a cavity communicated with the mounting groove, and a heating component is arranged in the mounting groove and between the upper disc cover and the lower disc seat, the heating component comprises a substrate matched with the mounting groove and mica sheets arranged on the surfaces of two sides of the substrate, and the mica sheets on two sides of the substrate are respectively and flexibly attached to the lower disc seat and the upper disc cover. The heating plate can eliminate the thermal resistance caused by the air gap in the heating plate, efficiently conduct heat to the heating plate, effectively absorb the stress generated by the internal structure due to thermal expansion and cold contraction, prevent the damage such as cracking of the plate body, and effectively prolong the service life of the plate body. The assembly method of the scheme is simple, and heat loss caused by an air gap inside the heating plate can be effectively eliminated.

Inventors

MA JIAQI
WANG QIAOGANG
JIN ZHONGXUAN

Assignees

浙江先导热电科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20251231

Claims (10)

1. The utility model provides a mica pottery heating plate, its characterized in that, includes disk body subassembly, disk body subassembly includes upper disc cover and lower disc seat, lower disc seat one end be equipped with the mounting groove of upper disc cover adaptation, the lower disc seat other end be equipped with the cavity of mounting groove intercommunication, in the mounting groove and be located upper disc cover with be equipped with heating element between the lower disc seat, heating element include with the base plate of mounting groove adaptation and locate the mica sheet on base plate both sides surface, the mica sheet of base plate both sides respectively with lower disc seat with the flexible laminating of upper disc cover.
2. The mica ceramic heating plate of claim 1 wherein the heating assembly and the plate assembly are provided with a thermally conductive insulating layer comprising a first thermally conductive insulating layer and a second thermally conductive insulating layer, the first thermally conductive insulating layer being provided between the heating assembly and the upper plate cover, and the second thermally conductive insulating layer being provided between the heating assembly and the lower plate base.
3. A mica ceramic heating plate as in claim 2 wherein a heat retaining reflective layer is provided between the heating element and the second thermally conductive insulating layer.
4. The mica ceramic heating plate of claim 1 wherein a temperature sensor is disposed on a side of the heating assembly adjacent to the mounting groove, and the temperature sensor is embedded in the upper plate cover corresponding to the cavity.
5. A mica ceramic heating plate as in claim 2 or 3 wherein the first thermally conductive insulating layer is a thermally conductive grease and the second thermally conductive insulating layer is a flexible silicone or ceramic thermally conductive adhesive.
6. A mica ceramic heating plate as in any one of claims 1 to 4 wherein said heating assembly has a plurality of axially disposed air storage holes extending therethrough.
7. A mica ceramic heating plate as in any one of claims 1 to 4 wherein the upper plate cover and the lower plate base are provided with a plurality of corresponding mounting holes and fixedly connected by fasteners.
8. A method of assembling a mica ceramic heating plate as claimed in any one of claims 1 to 7 comprising the steps of: s1, uniformly coating a layer of ceramic heat-conducting glue or flexible silica gel in a mounting groove of a lower disc seat to form a second heat-conducting insulating layer, and then arranging a plurality of layers of heat-insulating cotton and metal reflecting foil to form a heat-insulating reflecting layer; S2, placing the heating component in a mounting groove of the ceramic base, leading out the lead component from the cavity, and adjusting the alignment of the heating component and the hole site of the disc component; And S3, coating a first heat conduction insulating layer on one side of the heating component far away from the mounting groove, and locking the upper disc cover on the heating component by adopting a fastener.
9. The method of assembling a mica ceramic heating plate as claimed in claim 8 wherein in step S2, air storage holes are punched in the heating element corresponding to the installation groove.
10. The method of assembling a ceramic mica heating plate according to claim 8, wherein after the upper plate cover is assembled, a temperature sensor is placed in the cavity and is inserted into the mounting hole of the upper plate cover.

Description

Mica ceramic heating plate and assembly method thereof Technical Field The present invention relates to an electric heating apparatus, and more particularly, to a mica ceramic heating plate and an assembling method thereof. Background The ceramic heating plate is widely used because of the advantages of high temperature resistance, corrosion resistance, small thermal inertia, good temperature uniformity and the like. The traditional ceramic heating plate mainly comprises (1) embedding metal resistance wires, directly embedding the resistance wires into a ceramic blank, and sintering, and has the defects of complex manufacturing process, high cost, easy cracking caused by unmatched thermal expansion coefficients of the resistance wires and the ceramic, and incapability of replacement after damage. (2) The thick film printing method has the defects of extremely high process requirement, high cost, severe requirement on flatness of the substrate and integral scrapping after local damage. (3) The tubular heater is externally attached, namely the metal tubular heater is fixed on the back of the ceramic disc in a mechanical mode, and the defects are low thermal efficiency, poor temperature uniformity and the risk of stress concentration of mechanical fixing points. Mica heating plates are a common electric heating element, which is wound on a mica plate by adopting nichrome resistance wires (or etched foils), and the mica plate has good insulation and heat resistance. However, the ceramic heating plate is usually used as a planar heat source, and the problems of heat conduction, stress matching, installation and fixation and the like caused by the high-efficiency, reliable and uniform integration of the ceramic heating plate into a ceramic heating plate with extremely high performance requirements are solved, so that the ceramic heating plate is a technical problem to be solved at present. For example, chinese patent publication No. CN206237622U, publication No. 2017, no.6 and No. 9, the utility model discloses a heating plate, which comprises an upper plate body, an upper mica insulation plate, a mica fixing plate, a lower mica insulation plate and a lower plate body, wherein the upper plate body, the upper mica insulation plate, the mica fixing plate, the lower mica insulation plate and the lower plate body are sequentially arranged, heating wires are uniformly distributed on the mica fixing plate, the end parts of the heating wires penetrate through lead holes on the lower mica insulation plate, quick connection terminals connected with the end parts of the heating wires are arranged on the lower plate body, the edge of the lower plate body is bent towards the direction of the lower mica insulation plate to form a fixed edge, the upper mica insulation plate, the mica fixing plate and the lower mica insulation plate are clamped inside the fixed edge, and the lower end surface of the upper plate body is fixedly connected with the upper end surface of the fixed edge. This scheme can realize evenly generating heat, and overall structure is succinct, simple to operate. However, such a heating plate is likely to have an air gap inside, and the gas is a poor conductor of heat, which greatly reduces the heat generation efficiency and increases the heat generation loss. Disclosure of Invention The invention solves the problems of low heating efficiency and high heating loss of the existing heating plate, and provides the mica ceramic heating plate, and the heating plate can eliminate the thermal resistance caused by the air gap in the heating plate and efficiently conduct heat to the heating plate; simultaneously, the inner structure can effectively absorb the stress generated by thermal expansion and cold contraction, prevent the damage such as cracking of the disc body, and effectively prolong the service life of the disc body. The invention further aims to provide an assembling method of the mica ceramic heating plate, which is simple and can effectively eliminate heat loss caused by an air gap in the heating plate. In order to solve the technical problems, the mica ceramic heating plate comprises a plate body assembly, wherein the plate body assembly comprises an upper plate cover and a lower plate seat, one end of the lower plate seat is provided with a mounting groove matched with the upper plate cover, the other end of the lower plate seat is provided with a cavity communicated with the mounting groove, a heating assembly is arranged in the mounting groove and between the upper plate cover and the lower plate seat, the heating assembly comprises a substrate matched with the mounting groove and mica sheets arranged on the surfaces of two sides of the substrate, and the mica sheets on two sides of the substrate are respectively and flexibly attached to the lower plate seat and the upper plate cover. In this scheme, the mounting groove on the lower disc seat is used for placing heating element and upper disc lid, a