Three-phase ptc heater bracket and air conditioner

Abstract

The invention discloses a three-phase PTC ((Positive Temperature Coefficient)) heater bracket and an air conditioner. The three-phase PTC heater bracket comprises a bottom base (1), a middle cover plate (2) and a top cover (3), wherein the middle cover plate (2) covers the bottom base (1); heating tube installing cavities (11) and inserting sheet partitioning cavities which are communicated with the heating tube installing cavities (11) are formed between the bottom of the middle cover plate (2) and the bottom base (1); the inserting sheet partitioning cavities are isolated from one another, and are arranged corresponding to inserting sheets on heating tubes one by one; three isolated auxiliary installing cavities (12) for installing temperature limiters (17) and fuses (18) are formed in the upper part of the middle cover plate (2); the top cover covers the middle cover plate (2); the top cover (3), the middle cover plate (2) and the bottom base (1) are fixedly connected together. The three-phase PTC heater bracket has an integral structure, is simple in structure, is convenient to machine, and can well meet the use requirement of a three-phase PTC heater.

Description

technical field [0001] The invention relates to the field of electric heaters, in particular to a three-phase PTC heater bracket and an air conditioner. Background technique [0002] In recent years, with the expansion of market demand, the application range of PTC (Positive Temperature Coefficient) electric heaters has become wider and wider, especially in the field of household appliances, such as heaters, clothes dryers, air conditioners and so on. At present, the overheating safety protection device of the PTC heater is generally installed on the surface of the corrugated heat dissipation strip. This installation method makes assembly and maintenance inconvenient, and the overheating safety protection device is easy to loosen or even fall off, and the temperature of the electric heater cannot be accurately measured. And play a protective role in an abnormal situation in time. Moreover, this installation method is prone to produce metal debris, once it falls into the PTC...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned PTC heater bracket can only support two-phase PTC heaters, and cannot be used for three-phase PTC heaters, and the PTC heater bracket itself is limited by its structure. If one more phase is added, not only a larger space, and the structure of the bracket itself will be more complicated. There is currently no three-phase PTC heater bracket in the prior art, which can meet the requirements of the three-phase PTC heater.

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