Energy-saving motor starter and motor running capacitor modularized structure

Abstract

The invention relates to an energy-saving motor starter and motor running capacitor modularized structure and belongs to the field of motor starting and running devices of refrigerating compressors. The energy-saving motor starter and motor running capacitor modularized structure comprises a box, a compressor power-consumption-free starter and a compressor motor running capacitor. A transformer cavity, a bidirectional thyristor cavity and a motor starter cavity are respectively arranged at the left end, the middle and the right end of a box cavity, and a motor running capacitor is formed on the rear side of the box body. The compressor power-consumption-free starter is inserted into the box cavity. The compressor motor running capacitor is packaged in the motor running capacitor cavity. The energy-saving motor starter and motor running capacitor modularized structure is characterized by comprising an electrical compressor connecting box base and a protective cover, the upper side of the electrical compressor connecting box base is fixed with the box, a connecting terminal fixing base is formed on one side of the electrical compressor connecting box base, a connecting terminal cavity is formed on the upper portion of the connecting terminal fixing base, electric compressor connecting terminals are arranged in the connecting terminal cavity, the protective cover is fixedly nested with the box, nested box positioning legs are arranged at the bottom of the box in an extending manner, and a circuit positioning mechanism and a box fixing base are formed on the outer wall of the front side of the box. Modularized and electrical connection effect is good, mounting efficiency is high, and connection is regular and high in speed.

Description

technical field [0001] The invention belongs to the technical field of motor starting and running devices for refrigeration compressors, and in particular relates to a modular structure of an energy-saving motor starter and a motor running capacitor. modular construction. Background technique [0002] As known in the industry, a motor starter is connected in series in the starting circuit of the refrigeration compressor, and the positive temperature coefficient thermistor (abbreviated as PTC) of the motor starter is in a small resistance conduction state at room temperature. When the compressor is energized and started, the current passes through the PTC and a pair of inserts (also known as contact pieces) that are in electrical contact with both sides of the PTC to connect the starting circuit of the compressor to start the refrigeration compressor motor. At the same time, at the moment when the compressor motor starts, the current flowing through the PTC makes the PTC hea...

AI Technical Summary

Problems solved by technology

However, the two patents have the following common shortcomings: first, the patents pay attention to their own modular effect, while ignoring the effect of quick positioning and installation with the installation substrate in the refrigerator; second, the function is single, such as the two patents It does not have the transfer or relay effect function to provide corresponding line connection for the refrigeration compressor, because the line connecting the compressor includes the power line, the main line of the compressor, the auxiliary line of the compressor and the grounding protection line, etc. If the reasonable position of the body is matched with the terminal block for the power line of the compressor, the main and auxiliary lines of the compressor and the grounding protection line, and the terminal box is equipped with terminals for these lines, then not only can the connection line of the compressor be significantly improved. Standardize and regularize the effect, but also play a corresponding role in electrical safety and improve the wiring efficiency of the compressor

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