Rotary compressor, method for manufacturing the same, and defroster for refrigerant circuit
a compressor and refrigerant technology, applied in the direction of machines/engines, liquid fuel engines, lighting and heating apparatus, etc., can solve the problems of deterioration of durability and reliability, increase of compression load of the second rotary compression element, and difficulty in miniaturizing the compressor. achieve the effect of improving reliability
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[0069] The following will detail embodiments of the present invention with reference to drawings. In figures, a reference numeral 10 indicates an internal medium-pressure, multi-stage compression type rotary compressor using carbon dioxide as a refrigerant which comprises a cylindrical sealed vessel 12 made of a steel plate and a rotary compression mechanism portion 18 which includes an electrical-power element 14 arranged and housed in an upper part of an internal space of the sealed vessel and a first rotary compression element 32 (first stage) and a second rotary compression element 34 (second stage) which are arranged below the electrical-power element 14 to be driven by a rotary shaft 16 of the electrical-power element 14. The sealed vessel 12 has its bottom used as an oil reservoir and is composed of a vessel body 12A which houses the rotary compression mechanism portion 18 and the electrical-power, element 14 and a roughly cup-shaped end cap (lid) 12B which blocks an upper pa...
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