CAPACITY CONTROLLER FOR ENGINE DRIVING TYPE COMPRESSOR

• Main Author: YASUNAGA MASAO
• Format: Patent
• Language: English
• Published: 07.04.2005
• Edition: 7
• Subjects: ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES; BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To prevent occurrence of abnormal sound (hitting sound) under the condition that a compressor 4 is operated with the minimum capacity. SOLUTION: A capacity control means 15 is provided with a rotation speed detection means 27 for detecting rotation speed of an engine 1 and increases compression capacity of the compressor 4 up to predetermined capacity under the condition that compression capacity of the compressor 4 must be the minimum capacity when rotation speed of the engine 1 detected by a rotation speed detection means 27 is within a predetermined scope of capacity increase rotation speed including scopes NL to NH of abnormal sound generation rotation speed for operation. By increasing capacity of the compressor 4 within the predetermined scope of capacity increase rotation speed including the scopes NL to NH of abnormal sound generation rotation speed in which torque fluctuation level rises and abnormal sound is generated, synthetic torque applied to the compressor 4 is raised to prevent occurrence of minus torque. Consequently, occurrence of abnormal sound is prevented even under the condition that the compressor 4 is operated with the minimum capacity. COPYRIGHT: (C)2005,JPO&NCIPI