ROTARY COMPRESSOR

• Main Author: KOMORI HIROYUKI
• Format: Patent
• Language: English
• Published: 02.05.1997
• Edition: 6
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

PROBLEM TO BE SOLVED: To prevent liquid refrigerant from touching a terminal or motor winding so as to get rid of deterioration of insulation, etc., by opening the returning port of a leading-in pipe through which the refrigerant ejected from compression elements driven by electrically driven elements inside of a tightly sealed container is returned to the side of electrically driven elements of the tightly sealed container in the internal wall direction of the tightly closed container. SOLUTION: In a rotary compressor, an electrically driving element 2 and a compression element driven by the driving element are stored inside of a tightly closed container 1 and the compression element compresses gas by means of turning movement of a roller 6 fitted to its eccentric part 5 thereof. This gas reaches a cooling part 13 through a pre-cooler pipe 12 and after being cooled, it returns again to the tightly closed container 1 from a loading-in pipe 14 and is ejected from an ejecting pipe 15 after cooling electrically driven/compressed element. In this case, the returning port of the leading-in pipe is opened in the internal wall direction of the tightly closed container 1. Thereby, the liquid refrigerant returning form the cooling part 13 is prevented from directly touching terminals and the motor winding so as to prevent the insulation deterioration of the terminal part and coating separation of the motor winding on account of heat shock etc.