PTC thermal sensitive ceramic heating element

Abstract

The invention discloses a heating element of PTC thermosensitive ceramics. The main ingredient of the heating element comprises the following components and the material proportioning by weight: 37.56 to 42.65 percent of BaCO2, 26.16 to 31.23 percent of Pb3O4, 26.74 to 28.23 percent of TiO2, and 2.16 to 3.13 percent of CaCO3. The heating element has the advantages that firstly, the curie temperature of the receipt of the heating element, and the range for being suitable for the service voltage are both wider, and the conformity and the stability of the finished product are obviously improved;secondly, the electrical property of the heating element is better, the heating element is uneasy to be punctured and spark, and the thermal efficiency and the service life of the element are both greatly prolonged; thirdly, the physical property of the heating element is obviously improved, the cold-hot resistant catastrophic property is greatly enhanced, and the anti-aging property is improved;fourthly, the manufacturing process of the heating element is simple, the energy consumption for sintering is obviously saved, and the manufacturing cost is greatly reduced; fifthly, after the PTC heating element manufactured through the invention is assembled into a heating device, the production cost is obviously reduced, and the conformity, the operation reliability and the security of the product are all greatly improved.

Description

technical field

[0001] The invention relates to a high Curie point positive temperature coefficient (PTC) heat-sensitive ceramic heating element, in particular to a positive temperature coefficient ceramic heating element used in positive temperature coefficient heating devices of household appliances and positive temperature coefficient auxiliary electric heaters of air conditioners. Background technique

[0002] Ceramic positive temperature coefficient constant temperature heating devices are widely used in various AC and DC household appliances and civil and industrial electrical equipment. In recent years, it has been widely used especially in auxiliary electric heating of air conditioners. Among them, the positive temperature coefficient ceramic heating element is the most critical part in the heater, and its electrical and physical properties directly determine the performance of the heater. The positive temperature coefficient heating elements used in the existing ce...