Integrated motor starting and protecting device with improved structure

Abstract

The invention discloses an integrated motor starting and protecting device with an improved structure, and belongs to the technical field of single-phase alternating current motor starting and protecting devices. The device comprises a shell, a shell cover, an overload protector module, a power consumption-free starter module and an external terminal mechanism, wherein the shell is provided with an overload protector module cavity, a power consumption-free starter module cavity, an external terminal mechanism cavity and a starting controller cavity. The device is characterized in that: the external terminal mechanism cavity comprises a first insert cavity, a second insert cavity, a third insert cavity and a fourth insert cavity; the first, second and third insert cavities are positioned on the same side of the shell; the external terminal mechanism comprises a first insert, a second insert, a third insert and a fourth insert; the first insert is inserted into the first insert cavity; the second insert is inserted into the second insert cavity; the third insert is inserted into the third insert cavity; and the fourth insert is inserted into the fourth insert cavity. The device has the advantages of reducing the material consumption of the external terminal mechanism, meeting industrial production requirements and reflecting resource saving, along with compact structure, convenience for assembly and high assembly efficiency.

Description

technical field [0001] The invention belongs to the technical field of single-phase AC motor starting and protection devices, and in particular relates to a structure-improved integrated motor starting and protecting device, which is used for starting and overload protection of refrigeration compressor motors. Background technique [0002] Common refrigeration compressor motors are low-power single-phase AC motors, which require a starter to assist in starting. When the compressor enters normal operation, it must be protected by an overload protector. The overload protector ensures that the refrigeration compressor Disconnect the power supply in the event of an overload condition to avoid overheating and damage to the compressor motor. [0003] Usually, the starter and the overload protector of the refrigeration compressor are mostly split structures, that is, the starter and the overload protector are connected to the electrical circuit of the refrigeration compressor as tw...

AI Technical Summary

Problems solved by technology

However, there are still shortcomings: the specific performance is that the distribution of the external terminal mechanism (also known as the insert or pin mechanism in the industry) on the housing is scattered and disorderly, so that it is impossible to further reduce the occupied space of the refrigeration compressor, and it also affects the structure. Compactness, convenience and high efficiency of assembly, saving of material consumption and reliability in use

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