PURPOSE: To improve the effect of cooling a motor and the effect of lubricating bearings by splitting a space in the closed shell of a compressor into two, one space serving as suction pressure in which a motor is provided and the other space serving as discharge pressure in which a compressing mechanism is provided.
CONSTITUTION: A closed type rotary compressor consists of a motor 22 and a compressing mechanism 23 which are provided in the closed shell 21. In this case, a sealing section 32 is provided between an upper bearing 27 and the closed shell 21 to split a space A in which the motor 22 is provided from a space B in which the compressing mechanism 23 is provided. A suction pipe 33 is arranged at the upper part of the closed shell 21 to make refrigerant gas flow into the space A. On the other hand, a discharge pipe 34 is arranged at the lower part of the closed shell 21 to make refrigerant gas flow out of the space B to the outside. As a result, the motor 22 is fully cooled by low- temperature cooling gas and easy lubrication in gaps between a shaft 26 and bearings 27, 28 and between a piston 30 and a cylinder 29 is secured.
| JP5724706 | Rotary compressor |
| WO/2003/106843 | SCROLL COMPRESSOR |
| WO/2019/171540 | ROTARY COMPRESSOR AND REFRIGERATION CYCLE DEVICE |
TAGASHIRA MINORU
FUNAKURA SHOZO
YOSHIDA YUJI
