Motor rotor for refrigerator compressor

Abstract

The invention provides a motor rotor for a refrigerator compressor, comprising a rotor main body, wherein the rotor main body is formed by combination of a rotor iron core, an aluminium-casting upper-end ring, an aluminium-casting lower-end ring and secondary conductor aluminium; the rotor iron core is formed by lamination of a plurality of silicon steel pieces; the rotor iron core is provided with an aluminium filling hole; the aluminium-casting upper-end ring and the aluminium-casting lower-end ring are respectively positioned at the two ends of the rotor iron core; the secondary conductor aluminium is filled into the aluminium filling hole to connect the aluminium-casting upper-end ring, the rotor iron core and the aluminium-casting lower-end ring into a whole structure; the rotor iron core, the aluminium-casting upper-end ring and the aluminium-casting lower-end ring are respectively provided with an iron core inner hole, an upper-end ring inner hole and a lower-end ring inner hole which are coaxial; the end surface of the aluminium-casting upper-end ring is provided with at least two riveting columns; a radiating fan is provided with an installing ring piece and at least two blades which are connected and uniformly arranged on the installing ring piece; the installing ring piece is provided with installing-ring-piece penetrating holes corresponding to the riveting columns and is provided with an equal-diameter middle hole corresponding to the upper-end ring inner hole; and the radiating fan is fixed on the aluminium-casting upper-end ring by the ring-piece penetrating holes and the riveting columns. The motor rotor provided by the invention has the advantages of strong popularity, good radiating effect and easiness in manufacture.

Description

technical field [0001] The invention relates to a refrigeration compressor, in particular to a motor rotor in the refrigeration compressor. Background technique [0002] The motor (including the stator and rotor) of the refrigerator compressor generates heat when it is working, and the heat is mainly taken away by the casing and the refrigerant. At present, most refrigeration compressor motors do not have heat dissipation devices. [0003] The existing refrigerator compressor motor rotor is used with the stator, and its structure refers to figure 1 , including a rotor main body, the rotor main body is composed of a rotor core 10, an aluminum cast upper end ring 11, an aluminum cast lower end ring 12 and a secondary conductor aluminum. [0004] The rotor core is formed by laminating several silicon steel sheets. The rotor core has an aluminum injection hole. The aluminum-cast upper end ring and the aluminum-cast lower end ring are respectively located at both ends of the rot...

AI Technical Summary

Problems solved by technology

[0007] Although the existing method of directly casting a cooling fan on the motor rotor has the characteristics of simple structure and easy manufacture, different manufacturing molds must be designed for rotors of different specifications, and even rotors with the same specification must be manufactured separately. Different cooling fans are designed according to different powers (realized by using different manufacturing molds), so the problem is that the number of manufacturing molds for the rotor increases and the manufacturing cost increases

At the same time, due to the low strength of the aluminum material, the heat dissipation blades need to be made very thick, which is bulky

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