ELECTRIC VACUUM CLEANER
An electric vacuum cleaner which can detect the occurrence of a spark by an inexpensive structure and prevents smoking and ignition due to abnormal overheat in an end stage of life. The electric vacuum cleaner comprises a motor (7) having a commutator (11f) and a brush (11j), a current detecting por...
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| creator | NUMAKURA HIROMU JINBO SEIICHI AJIMA TAKEHIKO MURANO MOTOHIRO IIZUKA MASAYOSHI |
| description | An electric vacuum cleaner which can detect the occurrence of a spark by an inexpensive structure and prevents smoking and ignition due to abnormal overheat in an end stage of life. The electric vacuum cleaner comprises a motor (7) having a commutator (11f) and a brush (11j), a current detecting portion (3a) for detecting a current in the motor (7), a rectifying portion (3b) for rectifying the output of the current detecting portion (3a), an A/D converting portion (3c) for sampling the output of the rectifying portion (3b) as a digital value, a spark judging portion (4) which determines that a spark occurring in the motor (7) is abnormal when the sampled digital value exceeds a predetermined criterion level, and a driving means (5) which cuts off the supply of power to the motor (7) to stop the operation thereof when the spark occurring in the motor is judged abnormal by the spark judging means (4). |
| format | Patent |
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The electric vacuum cleaner comprises a motor (7) having a commutator (11f) and a brush (11j), a current detecting portion (3a) for detecting a current in the motor (7), a rectifying portion (3b) for rectifying the output of the current detecting portion (3a), an A/D converting portion (3c) for sampling the output of the rectifying portion (3b) as a digital value, a spark judging portion (4) which determines that a spark occurring in the motor (7) is abnormal when the sampled digital value exceeds a predetermined criterion level, and a driving means (5) which cuts off the supply of power to the motor (7) to stop the operation thereof when the spark occurring in the motor is judged abnormal by the spark judging means (4).</description><language>eng</language><subject>COFFEE MILLS ; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS ; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS ; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ; DOMESTIC ARTICLES OR APPLIANCES ; DOMESTIC WASHING OR CLEANING ; ELECTRICITY ; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS ; FURNITURE ; GENERATION ; HUMAN NECESSITIES ; MEASURING ; MEASURING ELECTRIC VARIABLES ; MEASURING MAGNETIC VARIABLES ; PHYSICS ; SPICE MILLS ; SUCTION CLEANERS IN GENERAL ; TESTING</subject><creationdate>2010</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20100113&DB=EPODOC&CC=KR&NR=20100005077A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20100113&DB=EPODOC&CC=KR&NR=20100005077A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NUMAKURA HIROMU</creatorcontrib><creatorcontrib>JINBO SEIICHI</creatorcontrib><creatorcontrib>AJIMA TAKEHIKO</creatorcontrib><creatorcontrib>MURANO MOTOHIRO</creatorcontrib><creatorcontrib>IIZUKA MASAYOSHI</creatorcontrib><title>ELECTRIC VACUUM CLEANER</title><description>An electric vacuum cleaner which can detect the occurrence of a spark by an inexpensive structure and prevents smoking and ignition due to abnormal overheat in an end stage of life. 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The electric vacuum cleaner comprises a motor (7) having a commutator (11f) and a brush (11j), a current detecting portion (3a) for detecting a current in the motor (7), a rectifying portion (3b) for rectifying the output of the current detecting portion (3a), an A/D converting portion (3c) for sampling the output of the rectifying portion (3b) as a digital value, a spark judging portion (4) which determines that a spark occurring in the motor (7) is abnormal when the sampled digital value exceeds a predetermined criterion level, and a driving means (5) which cuts off the supply of power to the motor (7) to stop the operation thereof when the spark occurring in the motor is judged abnormal by the spark judging means (4).</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | COFFEE MILLS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DOMESTIC ARTICLES OR APPLIANCES DOMESTIC WASHING OR CLEANING ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS FURNITURE GENERATION HUMAN NECESSITIES MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS SPICE MILLS SUCTION CLEANERS IN GENERAL TESTING |
| title | ELECTRIC VACUUM CLEANER |
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