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1. 发明专利

DE69015557D1 未知
公开(公告)号：DE69015557D1
公开(公告)日：1995-02-09
申请号：DE69015557
申请日：1990-10-15
申请人： HITACHI LTD
发明人： JYORAKU FUMIO , SUKA HISAO , ISHII YOSHITARO , TOYOSHIMA HISANORI , KAWAMATA MITSUHISA , KOHARAGI HARUO , TAHARA KAZUO , ENDO TUNEHIRO , MIYASHITA KUNIO , AJIMA TOSHIYUKI , ABE TAKESHI , HOSOKAWA ATUSI
IPC分类号： A47L9/28
摘要： A controlling apparatus (10) controls a suction performance of a blower motor (2) which is installed into a main body (3) of a cleaner (1). The controlling apparatus (10) increases the suction performance when a suction nozzle is operated and decreases the suction performance when the suction nozzle is stopped. Corresponding to a floor cleaning suction nozzle and a crevice cleaning suction nozzle, at a predetermined air flow amount range, the most suitable operation control is carried out automatically in accordance with the detected kind of suction nozzle. Whe the suction nozzle is exchanged the flow amount range is changed over and selected in accordance with the respective suction nozzle. A brushless direct motor is used as the blower motor and has an operational range by means of chopper control duty factor of 100 %.

2. 发明专利

DE69105845T2 未知
公开(公告)号：DE69105845T2
公开(公告)日：1995-04-27
申请号：DE69105845
申请日：1991-07-03
申请人： HITACHI LTD
发明人： IWASE YUKIJI , SATO SHIGENORI , SUNAGAWA MASAO , TOYOSHIMA HISANORI
IPC分类号： A47L9/00 , A47L5/22 , F04D29/44
摘要： A vacuum cleaner blower assembly has a blower motor (81), a vaned centrifugal impeller (90) driven by the blower motor (81) and an air diffuser (89) radially beyond the periphery of the impeller. In order to improve air flow efficiency at the impeller inlet and outlet, the air diffuser (89) has vanes (94) with an inlet angle in the range 1 to 4 DEG .

3. 发明专利

DE3853409D1 未知
公开(公告)号：DE3853409D1
公开(公告)日：1995-04-27
申请号：DE3853409
申请日：1988-12-13
申请人： HITACHI LTD
发明人： TOYOSHIMA HISANORI , JYORAKU FUMIO , ISHII YOSHITARO , TAHARA KAZUO , KOHARAGI HARUO , WATANABE SYUJI , SAITO KOUICHI , MIYASHITA KUNIO , ENDO TUNEHIRO , HISHI WAKICHIRO
IPC分类号： A47L9/28
摘要： The present invention relates to a vacuum cleaner comprising a case body (21); an electric motor blower (24) for collecting dusts into a dust collector chamber (23) through a suction port (29) by generating negative pressure at the suction port; a speed control unit (1) for controlling the rotation speed of said blower (24) according to a speed control signal; and a detecting unit (37) for detecting operation parameters including voltage, current, rotation speed and airflow amount of said blower (24) and pressure in the various portions in said case body (21). According to the invention the vacuum cleaner comprises a control rule generating unit (33) including a memory device (39, 43) which is attachable to and detachable from said case body, said memory device storing a plurality of different control rules (Figs. 5-9) which express mutual relationships among the values of said operation parameters; a switching device (35, 42) for selecting either one of said plurality of control rules stored in said memory device; and a signal processor (36, 41) including a microcomputer (7), which controls and generates said speed control signal in such a manner that the values of the detected operation parameters satisfy the mutual relationship expressed by the selected control rule from the memory device.

4. 发明专利

DE3776069D1 未知
公开(公告)号：DE3776069D1
公开(公告)日：1992-02-27
申请号：DE3776069
申请日：1987-10-08
申请人： HITACHI LTD
发明人： KOHARAGI HARUO , TAHARA KAZUO , ENDO TSUNEHIRO , MIYASHITA KUNIO , ISHII YOSHITARO , JYORAKU FUMIO , WATANABE SYUJI , TOYOSHIMA HISANORI , SAITO KOHICHI , HISHI WAKICHIRO , YAMASHITA KOUJIROU
IPC分类号： A47L9/28 , H02P6/06 , H02P23/00 , H02P6/02 , H02P7/00
摘要： Method an apparatus for operating a vacuum cleaner which a load state of a cleaner (1) is calculated by a microcomputer (13) from a load current and a rotational speed of a motor (9) and wherein a voltage or a current being applied to the motor (9) is controlled so as to save electric power in at least one of the heavy load state or the light load state of the motor (9).

5. 发明专利

DE69127832T2 未知
公开(公告)号：DE69127832T2
公开(公告)日：1998-04-30
申请号：DE69127832
申请日：1991-07-03
申请人： HITACHI LTD
发明人： IWASE YUKIJI , SATO SHIGENORI , SUNAGAWA MASAO , TOYOSHIMA HISANORI
IPC分类号： A47L9/00 , A47L5/22 , F04D29/44
摘要： A vacuum cleaner blower assembly has a blower motor (81), a vaned centrifugal impeller (90) driven by the blower motor (81) and an air diffuser (89) radially beyond the periphery of the impeller. In order to improve air flow efficiency at the impeller inlet and outlet, the air diffuser (89) has vanes (94) with an inlet angle in the range 1 to 4 DEG .

6. 发明专利

DE3853409T2 未知
公开(公告)号：DE3853409T2
公开(公告)日：1995-07-27
申请号：DE3853409
申请日：1988-12-13
申请人： HITACHI LTD
发明人： TOYOSHIMA HISANORI , JYORAKU FUMIO , ISHII YOSHITARO , TAHARA KAZUO , KOHARAGI HARUO , WATANABE SYUJI , SAITO KOUICHI , MIYASHITA KUNIO , ENDO TUNEHIRO , HISHI WAKICHIRO
IPC分类号： A47L9/28
摘要： The present invention relates to a vacuum cleaner comprising a case body (21); an electric motor blower (24) for collecting dusts into a dust collector chamber (23) through a suction port (29) by generating negative pressure at the suction port; a speed control unit (1) for controlling the rotation speed of said blower (24) according to a speed control signal; and a detecting unit (37) for detecting operation parameters including voltage, current, rotation speed and airflow amount of said blower (24) and pressure in the various portions in said case body (21). According to the invention the vacuum cleaner comprises a control rule generating unit (33) including a memory device (39, 43) which is attachable to and detachable from said case body, said memory device storing a plurality of different control rules (Figs. 5-9) which express mutual relationships among the values of said operation parameters; a switching device (35, 42) for selecting either one of said plurality of control rules stored in said memory device; and a signal processor (36, 41) including a microcomputer (7), which controls and generates said speed control signal in such a manner that the values of the detected operation parameters satisfy the mutual relationship expressed by the selected control rule from the memory device.

7. 发明专利

DE69107119D1 未知
公开(公告)号：DE69107119D1
公开(公告)日：1995-03-16
申请号：DE69107119
申请日：1991-04-15
申请人： HITACHI LTD
发明人： KOHARAGI HARUO , TAHARA KAZUO , AJIMA TOSHIYUKI AJIMA TOSHIYUK , ABE TAKESHI , ENDO TSUNEHIRO , MIYASHITA KUNIO , ISHII YOSHITARO , JYORAKU FUMIO , SUKA HISAO , HOSOKAWA ATUSI , TOYOSHIMA HISANORI , KAWAMATA MITSUHISA
IPC分类号： A47L9/28 , A47L9/19
摘要： A fan motor (FM,17,38,39) such as a brushless motor and a static pressure sensor (8) are provided on a cleaner main body (2) and a nozzle motor (26) is brush. A kind of a cleaning surface (1) to be cleaned is estimated according to a fluctuation width of a peak value in current of the nozzle motor (26) or a fluctuation width of an output value the static pressure sensor (8). A kind of a suction nozzle is estimation according to a speed and a load current of the fan motor (FM,17,38,39) or a wind amount and a mean value of the output value of the pressure sensor (8). In response to the estimated result of the kind of the cleaning surface (1) to be cleaned and the kind of the suction nozzle, inputs of the fan motor (FM,17,38,39) and the nozzle motor (26) are controlled automatically. The input of the fan motor is adjusted automatically through a detection of a mean value of the peak value in current of the nozzle motor. The wind amount and a static pressure are calculated according to the load current and the speed of the fan motor, and in accordance with this calculation result a speed command of the fan motor is determined.

8. 发明专利

DE69000810D1 未知
公开(公告)号：DE69000810D1
公开(公告)日：1993-03-11
申请号：DE69000810
申请日：1990-04-03
申请人： HITACHI LTD
发明人： TOYOSHIMA HISANORI , JYORAKU FUMIO , KAWAMATA MITSUHISA , ISHII YOSHITARO , ARAI JIRO
IPC分类号： A47L9/00 , A47L5/22 , A47L9/02 , A47L9/10 , A47L9/12 , A47L9/22
摘要： A vacuum cleaner comprising: a fan motor (6) disposed in a main body case (1) thereof and having a motor (10) arranged in such a manner that its rotor (13) or its stator (14) uses a permanent magnet (12) and a fan arranged to be rotated by the motor; a dust-collecting chamber (1a) for collecting dust sucked into the main body case due to the rotation of the fan motor; and a dust-collecting filter (5) for causing the dust sucked into the main body case to be caught in the dust-collecting chamber, wherein magnetic material adhesion preventing device (20) (21) (22) (25) (26) (27) (29) (30) is provided in a passage through which air flows due to rotation of the fan motor, the magnetic material adhesion preventing device acting to prevent adhesion of fine dust composed of magnetic materials included in the air flow to a portion in the vicinity of the permanent magnet. As a result, the sticking taken place between the rotor and the stator due to adhesion of fine dust between them can be prevented, causing the life to be elongated and the reliability to be improved.

9. 发明专利

DE69127832D1 未知
公开(公告)号：DE69127832D1
公开(公告)日：1997-11-06
申请号：DE69127832
申请日：1991-07-03
申请人： HITACHI LTD
发明人： IWASE YUKIJI , SATO SHIGENORI , SUNAGAWA MASAO , TOYOSHIMA HISANORI
IPC分类号： A47L9/00 , A47L5/22 , F04D29/44
摘要： A vacuum cleaner blower assembly has a blower motor (81), a vaned centrifugal impeller (90) driven by the blower motor (81) and an air diffuser (89) radially beyond the periphery of the impeller. In order to improve air flow efficiency at the impeller inlet and outlet, the air diffuser (89) has vanes (94) with an inlet angle in the range 1 to 4 DEG .

10. 发明专利

DE69105845D1 未知
公开(公告)号：DE69105845D1
公开(公告)日：1995-01-26
申请号：DE69105845
申请日：1991-07-03
申请人： HITACHI LTD
发明人： IWASE YUKIJI , SATO SHIGENORI , SUNAGAWA MASAO , TOYOSHIMA HISANORI
IPC分类号： A47L9/00 , A47L5/22 , F04D29/44
摘要： A vacuum cleaner blower assembly has a blower motor (81), a vaned centrifugal impeller (90) driven by the blower motor (81) and an air diffuser (89) radially beyond the periphery of the impeller. In order to improve air flow efficiency at the impeller inlet and outlet, the air diffuser (89) has vanes (94) with an inlet angle in the range 1 to 4 DEG .

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