Closed ammonia-resistant motor with ammonia-resistant insulation system

Abstract

The invention relates to a closed ammonia-resistant motor with an ammonia-resistant insulation system. The closed ammonia-resistant motor with the ammonia-resistant insulation system comprises a stator core, a stator winding, slot insulation and a slot wedge, wherein the stator winding is wound inside a stator core slot, the slot insulation is used for insulating and isolating the stator winding, and the slot wedge is used for fixing the stator winding. The stator winding is aluminum conductor electromagnetic wires coated with polyphenylene sulfide; the slot insulation is compound insulation cloth which is alkali-free glass fiber cloth coated with fluoroplastic; and the slot wedge is a lamination of epoxy resin and glass fiber. The closed ammonia-resistant motor with the ammonia-resistant insulation system enable an ammonia-resistant motor to work in an environment full of ammonia refrigerant, the same with a freon-resistant motor; and is a novel motor for a closed ammonia refrigeration compressor.

Description

technical field [0001] The invention relates to a closed ammonia-resistant motor adopting an ammonia-resistant insulation system. Background technique [0002] Scientific research has proved that Freon and other chemical substances used in the refrigeration industry are one of the important factors causing global climate anomalies, and are the main chemical substances that destroy the structure of the atmosphere and damage the ozone layer. [0003] At present, refrigeration systems generally use substances such as CFCs and HCFCs as refrigerants, while the newly developed fluorine-free refrigeration systems still use fluorocarbons, which are also only considered as an intermediate substitute for refrigerants. [0004] The international community has noticed and taken a series of corresponding measures. In addition to the establishment of the "Montreal Protocol on Substances that Deplete the Ozone Layer" in 1987, and at the United Nations General Assembly in 1994, Sept...

AI Technical Summary

Problems solved by technology

In 1996, someone in our country applied for the patent of the motor for the ammonia refrigeration compressor. With reference to the Chinese patent of the announcement number CN1126900 "Magnetic Sleeve Motor at the Tooth Top and Ammonia Refrigeration Hermetic Compressor Made of It", the ammonia refrigeration motor It is not an ammonia-resistant refrigeration motor used in a hermetic compressor. In terms of structure, a stainless steel isolation sleeve is added between the stator and the rotor. The heat dissipation condition is quite poor, and the cooling condition is not ideal.

In the case of the same power, the volume increases a lot, and it is basically the same as the ordinary air-cooled motor. This kind of motor is not a hermetic refrigeration compressor motor widely used at present, and no one cares about it in the refrigeration compressor industry so far.

Moreover, the structure of the motor is complex, and the motor is not as good as the cooling condition of the current hermetic refrigeration compressor motor, which restricts the use of the motor for the ammonia refrigeration hermetic refrigeration compressor. Another important reason is that the halogenated refrigerant was not found in the early stage. The biggest defect of hydrocarbons and only knowing the advantages of use, under the circumstances at that time also rejected the development and promotion of ammonia refrigeration motors

Images