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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

DE69000810T2 未知
公开(公告)号：DE69000810T2
公开(公告)日：1993-08-19
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.

3. 发明专利

DE69222494T2 未知
公开(公告)号：DE69222494T2
公开(公告)日：1998-04-30
申请号：DE69222494
申请日：1992-07-23
申请人： HITACHI LTD
发明人： KOHARAGI HARUO , THARA KAZUO , ISHII YOSHITAROU , SUKA HISAO , KAWAMATA MITSUHISA , AZIMA TOSHIYUKI
IPC分类号： A47L9/28 , A47L15/46 , G05B13/02 , G06N3/04 , G05B15/02 , G06F15/00 , A47L9/00
摘要： In order to control a controlled object (1), such as a vacuum cleaner or washing machine signals are derived from a single sensor (4 or 5), which measures a single property of the controlled object (1), and are the signals used by a characteristic amount sampling unit (8) to derive a plurality of control characteristics. These are then processed by a neural network (15) to derive a basic control signal. The characteristics, or further characteristics derived from a further sensor (4) and a local condition detector are analysed by a fuzzy logic system (16) and used to modify the basis control signal. In other arrangements, the fuzzy logic is applied (60A, 60B, 60C, 60D) to each characteristic before the characteristics are applied to the neural network (15). Because the calculation time needed by the neural network (15) is long, it is possible to detect (50) if one of the characteristics has a particular volume (is within a predetermined range). Then, a fixed pattern may be derived, modified only by the fuzzy logic (16).

4. 发明专利

DE69222494D1 未知
公开(公告)号：DE69222494D1
公开(公告)日：1997-11-06
申请号：DE69222494
申请日：1992-07-23
申请人： HITACHI LTD
发明人： KOHARAGI HARUO , THARA KAZUO , ISHII YOSHITAROU , SUKA HISAO , KAWAMATA MITSUHISA , AZIMA TOSHIYUKI
IPC分类号： A47L9/28 , A47L15/46 , G05B13/02 , G06N3/04 , G05B15/02 , G06F15/00 , A47L9/00
摘要： In order to control a controlled object (1), such as a vacuum cleaner or washing machine signals are derived from a single sensor (4 or 5), which measures a single property of the controlled object (1), and are the signals used by a characteristic amount sampling unit (8) to derive a plurality of control characteristics. These are then processed by a neural network (15) to derive a basic control signal. The characteristics, or further characteristics derived from a further sensor (4) and a local condition detector are analysed by a fuzzy logic system (16) and used to modify the basis control signal. In other arrangements, the fuzzy logic is applied (60A, 60B, 60C, 60D) to each characteristic before the characteristics are applied to the neural network (15). Because the calculation time needed by the neural network (15) is long, it is possible to detect (50) if one of the characteristics has a particular volume (is within a predetermined range). Then, a fixed pattern may be derived, modified only by the fuzzy logic (16).

5. 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.

6. 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.

7. 发明专利

JPH10252662A PUMP DEVICE 失效
公开(公告)号：JPH10252662A
公开(公告)日：1998-09-22
申请号：JP5275197
申请日：1997-03-07
申请人： HITACHI LTD
发明人： KASHIMURA HIRONOBU , TANABE MASATOSHI , KAWAMATA MITSUHISA
IPC分类号： F04B49/06 , F04B23/02 , F04B49/08
摘要： PROBLEM TO BE SOLVED: To eliminate influence of a suction up height by detecting pressure in a pump device by a pressure sensor, starting pump operation when a pressure drop is recognized, stopping a pump when the pressure becomes constant, and seizing time when the pump pressure drops by a fixed pressure quantity. SOLUTION: Pressure of a pump 2 is detected by a pressure sensor 5, and when a pressure drop is detected, the pump 2 is started and operated. When the pressure becomes constant, the pump 2 is stopped, and time until pump pressure reaches a fixed pressure drop quantity is measured. When necessary time is shorter than preset time, it is judged as being not less than a stopping flow rate, and pump operation is resumed. When the necessary time is longer than the preset time, it is judged as being not more than a preset stopping flow rate, and a pressure value at judging time is stored as a pump shutoff pressure, and it is put in a standby condition. Therefore, a pump device can be operated and stopped by a pressure switch or the like without fixing an operation starting pressure value and an operation stopping pressure value, and influence of a suction-up height is not exerted.

8. 发明专利

JPH10252659A PUMP DEVICE 失效
公开(公告)号：JPH10252659A
公开(公告)日：1998-09-22
申请号：JP5275297
申请日：1997-03-07
申请人： HITACHI LTD
发明人： KASHIMURA HIRONOBU , TANABE MASATOSHI , KAWAMATA MITSUHISA
IPC分类号： F04B49/00 , F04B23/02 , F04B49/06 , F04B49/08
摘要： PROBLEM TO BE SOLVED: To operate and stop a pump device without fixing an operation starting pressure value and an operation stopping pressure value by stopping a pump for a fixed time, and judging a flow rate by seizing a pressure variation at that time after confirming that detecting pressure does not change for a fixed time by storing the detecting pressure at all times. SOLUTION: A solution plug is opened up to opening A from time T1 to T3. At the time T3, pump pressure becomes constant (P1). A microcomputer recognizes that the pump pressure is constant (P1), and restarts a pump at time T4 after stopping it during time ΔT. Therefore, the microcomputer detects a pressure drop quantity ΔP, and judges a present flow rate, and compares it with a preset stopping flow rate. When judged that it is not less than the stopping flow rate, the pump is continuously operated. When the solution plug is closed up to opening B from time T5 to T6, the microcomputer recognizes the pump pressure becomes constant (P2), and restarts the pump at time T7 after stopping it during time ΔT, and compares a present flow rate with a preset flow rate. When judged that it is less than the preset flow rate, the pump is stopped.

9. 发明专利

JPH09122052A ELECTRIC VACUUM CLEANER 失效
公开(公告)号：JPH09122052A
公开(公告)日：1997-05-13
申请号：JP28286595
申请日：1995-10-31
申请人： HITACHI LTD
发明人： TAKAMUNE YUICHIRO , KAWAMATA MITSUHISA
IPC分类号： A47L9/28 , H04Q9/00
摘要： PROBLEM TO BE SOLVED: To enable adjustment of the body of an electric vacuum cleaner constantly to the completed state thereof by arranging an arithmetic section and a memory means in a control circuit of the electric vacuum cleaner. SOLUTION: When an adjustment start command is outputted from a remote control transmitter 18 by a control box 30, the body 1 of an electric vacuum cleaner receives a signal with a remote control receiving section 6 to start an electric blower. A microcomputer controls an input of the electric blower so that an output from a current detection circuit coincides with a target current value stored in a memory circuit. A control box 30 reads the input at which the both coincide from a wattmeter 29 and compares the input with a target input to generate an adjusting signal, which is outputted from the transmitter 18. The body 1 corrects a target current value based on the adjusting signal and the input of the electric blower 8 is controlled again so that it reaches the corrected target current value. When coincidence is made, the body 1 stores the final target current value into the memory circuit. In the operation thereafter, the electric blower can be controlled by the target power using the value.

10. 发明专利

JPH04269931A VACUUM CLEANER 失效
公开(公告)号：JPH04269931A
公开(公告)日：1992-09-25
申请号：JP2982591
申请日：1991-02-25
申请人： HITACHI LTD
发明人： KAWAMATA MITSUHISA
IPC分类号： A47L9/02 , A47L9/28
摘要： PURPOSE:To forcibly generate changes in operational state by a method wherein a suction port as an attachment of a vacuum cleaner has a construction so that the contact state between the suction port and a floor to be cleaned is changed. CONSTITUTION:For example, a suction port 7 is equipped with a wheel 13, and a spring 14 is put between the suction port 7 and the wheel 13 so that the pressure is forcibly changed with constriction and expansion of the spring 14. The change value of the pressure is detected to judge whether or not cleaning is under way, and when cleaning is not carried out, control is performed so as to reduce the rotating speed of an electric fan. Thus, changes in pressure can easily be generated at the suction port where changes in pressure are hardly generated, that allows easily judging whether or not cleaning is under way. Control is carried out so as to reduce the rotating speed of the electric fan when it is Judged that cleaning is not carried out, resulting in energy saving.

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