PUMP
PROBLEM TO BE SOLVED: To provide a pump capable of reducing heat generation when a motor generates heat. SOLUTION: A current detection means 9 detecting a value of current carried to the motor 4 and a drive circuit 2 having a switching function turning on and off electricity carry to the motor 4 are...
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| creator | IYASAKA MASATOSHI UEDA HIDETOSHI HATSUTORI CHIYOUKEN |
| description | PROBLEM TO BE SOLVED: To provide a pump capable of reducing heat generation when a motor generates heat. SOLUTION: A current detection means 9 detecting a value of current carried to the motor 4 and a drive circuit 2 having a switching function turning on and off electricity carry to the motor 4 are provided. When motor current effective value at a cold time of a predetermined section is defined as Ic and motor current effective value at a hot time is defined as Ih, electricity carry to the motor 4 is turned on and off by using the drive circuit 2 to satisfy inequality Ih≤Ic. COPYRIGHT: (C)2006,JPO&NCIPI |
| format | Patent |
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SOLUTION: A current detection means 9 detecting a value of current carried to the motor 4 and a drive circuit 2 having a switching function turning on and off electricity carry to the motor 4 are provided. When motor current effective value at a cold time of a predetermined section is defined as Ic and motor current effective value at a hot time is defined as Ih, electricity carry to the motor 4 is turned on and off by using the drive circuit 2 to satisfy inequality Ih≤Ic. 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SOLUTION: A current detection means 9 detecting a value of current carried to the motor 4 and a drive circuit 2 having a switching function turning on and off electricity carry to the motor 4 are provided. When motor current effective value at a cold time of a predetermined section is defined as Ic and motor current effective value at a hot time is defined as Ih, electricity carry to the motor 4 is turned on and off by using the drive circuit 2 to satisfy inequality Ih≤Ic. COPYRIGHT: (C)2006,JPO&NCIPI</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | BLASTING CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS |
| title | PUMP |
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