Direct-loaded current starter with improved structure

Abstract

The invention discloses a direct-loaded current starter with an improved structure, and belongs to the technical field of refrigeration compressor motor starting devices. The direct-loaded current starter comprises a base, a duplex plugging sheet, a first plugging pin, a second plugging pin, a second fixed contact, a movable contact mechanism and a cover plate, wherein the base is provided with a base cavity, the duplex plugging sheet is arranged on the base, the first plugging pin is inserted into a first plugging pin cavity, the second plugging pin is embedded into a second plugging pin cavity, the base portion of the second plugging pin is provided with a first fixed contact, the second fixed contact is parallel to the first fixed contact, and the movable contact mechanism is arranged on the base. A coil is winded on a coil framework, the movable contact mechanism is matched with a central hole of the coil framework, and the cover plate is matched with the base in a covering manner. The direct-loaded current starter is characterized by further comprising a negative temperature coefficient thermistor and a negative temperature coefficient thermistor wiring pin, a first leading pin of the negative temperature coefficient thermistor is connected with the duplex plugging sheet, a second leading pin of the negative temperature coefficient thermistor is connected with the negative temperature coefficient thermistor wiring pin, and the negative temperature coefficient thermistor wiring pin is inserted to the left of the base. The interference resistance of a power supply is improved, the operating life of the power supply is prolonged, operation is reliable, and the efficiency of a refrigeration compressor is improved.

Description

technical field [0001] The invention belongs to the technical field of motor starters for refrigeration compressors, and in particular relates to a weight-type current starter with improved structure. Background technique [0002] In the published Chinese patent literature, it can be seen that the technical information of heavy hammer current starters applied to refrigeration compressor motors is typical, such as "a kind of fully enclosed heavy hammer starter for R600aZ quality refrigeration compressors" recommended by the authorized announcement number CN2733039Y ", the patent scheme prevents the leakage of the electric spark generated between the dynamic and static contacts by adding a sealed insulating plastic shell, that is to say, the electric spark is sealed in the sealed insulating plastic shell, which improves the performance of the refrigeration compressor. security. A more typical example is "a heavy hammer starter with improved sealing performance" provided by th...

AI Technical Summary

Problems solved by technology

A more typical example is "a heavy hammer starter with improved sealing performance" provided by the authorized announcement number CN202906801U. Compared with the prior art, this patented solution can objectively fulfill the technical effect recorded in paragraph 0010 of its specification. Paragraphs 0024 to 0029 of the description of this patent are not difficult to find that there are following defects: since the moment when the refrigeration compressor motor is started, a surge current will inevitably be generated, and the surge current will interfere with the entire power supply circuit and also affect the power supply circuit. The working life and working stability of the heavy hammer current starter have a great influence, so the patent scheme does not give the enlightenment to eliminate this technical problem

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