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1. 发明专利

JP2002360475A ELECTRIC VACUUM CLEANER 失效
公开(公告)号：JP2002360475A
公开(公告)日：2002-12-17
申请号：JP2001173040
申请日：2001-06-07
申请人： HITACHI LTD
发明人： YAMAMOTO WATARU , YAMAGUCHI ATSUSHI , SUZUKI SHIGEHIKO , TOYOSHIMA HISANORI , OZAWA TORU , UMEZAWA KOICHI
IPC分类号： A47L9/00 , A47L9/10 , A47L9/26 , A47L9/28
摘要： PROBLEM TO BE SOLVED: To provide a small-size electric vacuum cleaner which is improved both in exhaust air cleaning performance and silent operation. SOLUTION: According to the electric vacuum cleaner, a pair of annular main wheels 101 are arranged on both sides of an air blowing chamber 114 and a power source chamber 115 of a vacuum cleaner main body 100, and an exhaust air purifying filter 112 based on the HEPA standard and an air passage 135 are arranged in an inner peripheral portion of each main wheel 101. Further, a wheel cover space 133a for turning exhaust air to an outside space 51 is arranged inside a wheel cover 133, and an exhaust port 166 is arranged on the periphery of the main wheel, to thereby emit exhaust air outside the vacuum cleaner.

2. 发明专利

JP2002125896A DISCHARGING RUBBISH STRUCTURE OF VACUUM CLEANER 失效
公开(公告)号：JP2002125896A
公开(公告)日：2002-05-08
申请号：JP2000332126
申请日：2000-10-26
申请人： HITACHI LTD
发明人： TANAKA TAKEO , TAKAHASHI KENJI , IWASE KOJI , NAKAGAWA YOJI , OZAWA TORU , TOYOSHIMA HISANORI
IPC分类号： A47L9/10 , A47L9/16
摘要： PROBLEM TO BE SOLVED: To solve problems such as lowering of suction power and inconve nience to handle a heavy vacuum cleaner caused by filling with rubbish in a vacuum cleaner bag for domestic use and inconvenience to put a vacuum cleaner container in and out and easily to spill the rubbish when discharging rubbish. SOLUTION: The rubbish is collected in the bottom of a vacuum cleaner container consisted of an outside pipe and inside pipe. A discharging rubbish hole and a movable lit are formed in the bottom of rubbish collecting space. With using an electric motor, the movable lit opens and closes and the rubbish is directly discharged outside.

3. 发明专利

JPH04197398A CLOTHING DRYER 失效
公开(公告)号：JPH04197398A
公开(公告)日：1992-07-16
申请号：JP33219390
申请日：1990-11-29
申请人： HITACHI LTD
发明人： KOMATSU TSUNETOSHI , ISHINO TAKASHI , SASAKI KATSUTOSHI , TOMITA TAKASHI , OZAWA TORU
IPC分类号： D06F58/28
摘要： PURPOSE:To improve operability by detecting the temperature at a drying chamber outlet, the temperature difference from the outside temperature, and the humidity at the drying chamber outlet for operation control, and continuously displaying the estimated remaining time for drying from three minutes after the start of an operation. CONSTITUTION:A temperature sensor 20 made of a thermistor and a humidity sensor 22 are fitted at the position faced to the heat outlet 8 of a fan casing 11 in a circulation duct to detect the state change of the dry air. A temperature sensor 21 made of a thermistor is fitted at the cooling air inlet 2 of a back cover 2 to detect the outside air temperature. The drum outlet temperature and the cooling air inlet temperature in a preheating/drying segment I are detected by the temperature sensors made of the thermistor and calculated by a microcomputer, and the progress state is displayed as the remaining time. Conventional products of the current sensor and humidity sensor used for correction have actual achievements, and there is no fear of noises and erroneous actions.

4. 发明专利

JPH04197397A CONTROL DEVICE FOR CLOTHING DRYER 失效
公开(公告)号：JPH04197397A
公开(公告)日：1992-07-16
申请号：JP33219490
申请日：1990-11-29
申请人： HITACHI LTD
发明人： OZAWA TORU
IPC分类号： D06F58/28
摘要： PURPOSE:To reduce the effect of an error at the portion to judge the output voltage values from voltage conversion sections for each detection point by providing multiple voltage conversion sections for one current detection section, and changing the output voltage values of the voltage conversion sections for the same heater excitation current value. CONSTITUTION:A current detection section 18 detects the current value of a heater and outputs it as the AC voltage. This AC voltage is converted into the DC voltage by voltage conversion sections 19a, 19b and outputted to a microcomputer 6. The microcomputer 6 detects the abnormality of a control circuit or the clogging of a lint filter provided to collect the lint generated from the clothing in response to the output voltage of the voltage conversion sections 19a, 19b according to the preset program. The value of the primary current (i) when the output voltage A exceeds the voltage VDD of the control circuit is made small, and the detection current range is made narrow. If the secondary side load resistor 18b is made small, the detection current range is made wide, however detection is impossible at the point with the small primary current (i).

5. 发明专利

JPS61209691A SIGNAL TAKE-IN CIRCUIT 失效
公开(公告)号：JPS61209691A
公开(公告)日：1986-09-17
申请号：JP5047785
申请日：1985-03-15
申请人： HITACHI LTD
发明人： ITO KOICHI , NAGAI TAKASHI , TAKAHASHI TOSHIHIRO , OZAWA TORU
IPC分类号： D06F33/02 , G01M3/16

6. 发明专利

JPH11212782A CONTROL DEVICE FOR ELECTRIC EQUIPMENT 失效
公开(公告)号：JPH11212782A
公开(公告)日：1999-08-06
申请号：JP945398
申请日：1998-01-21
申请人： HITACHI LTD
发明人： HOSOKAWA ATSUSHI , OZAWA TORU , SHINKO YASUSHI , SOMA TSUNEHIRO , ITO SHOICHI , UCHIYAMA TOSHIYUKI
IPC分类号： G06F9/06 , G05B19/02
摘要： PROBLEM TO BE SOLVED: To provide a control device for electric equipment of which specifications are easily changed. SOLUTION: Change of specifications and production management are made easier by making it possible to write (or rewrite) a program and/or data of control processing, which, after a control part 3 is assembled, executes the microcomputer 24 provided for the control part 3 executes, in rewritable non- volatile storage means 24a and 25.

7. 发明专利

JPH1156723A CONTROL CIRCUIT FOR VACUUM CLEANER 失效
公开(公告)号：JPH1156723A
公开(公告)日：1999-03-02
申请号：JP23212997
申请日：1997-08-28
申请人： HITACHI LTD
发明人： KAJI MASAKI , ITO SHOICHI , OZAWA TORU
IPC分类号： A47L9/28
摘要： PROBLEM TO BE SOLVED: To suppress influence of output voltage difference and to improve input control accuracy, by setting the absolute value of output voltage of a current transformer in a current detecting part smaller and amplifying the output voltage after the current transformer voltage comes to over a prescribed valuer in a differential amplifying circuit after rectifying and smoothing. SOLUTION: A current transformer(CT) is used in a current detecting part 23 of a current detecting circuit 22, a diode is connected to a rectifying means 24, and an electrolysis capacitor is used in a smoothing circuit. An operation amplifier is used in an amplifying means 26 to form a differential amplifying circuit. Further a load resistance to set output voltage when certain current flows in the primary side of the CT is connected. The value of the load resistance 31 is made smaller and is shifted by the amplifying means 26 to a required position in the whole input to amplify up to a required value. Thus output voltage difference can be made smaller to reduce the influence thereof.

8. 发明专利

JPH0392199A DRYING MACHINE FOR CLOTHING 失效
公开(公告)号：JPH0392199A
公开(公告)日：1991-04-17
申请号：JP22825389
申请日：1989-09-05
申请人： HITACHI LTD
发明人： OZAWA TORU , IKEDA KAZUFUMI
IPC分类号： D06F58/28
摘要： PURPOSE:To obtain a desired drying-state, by a method wherein a humidity of hot air exhausted from a rotary drum is detected, and on the basis of a signal of its humidity, a speed of a motor for an electric type timer switch is varied, and the switch controls the time when sir is heated and circulated. CONSTITUTION:In a humidity-deciding circuit 305d in a motor control circuit 305, when the impedance of a humidity sensor 18 is larger than a specified value, it is decided that humidity is low, and when smaller, the humidity is high. According to this, a speed of the revolution of a cam-driving motor 303c for an electric type timer switch 303 is varied through a two way thyristor 305a with three terminals from a thyristor-driving circuit 305f. That is to say, when the drying of clothing is going on and the impedance of the humidity sensor 18 is larger than the specified value, it is decided that hot air is turned into the air with low humidity. After that, the cam-driving motor 303c is operated at a relatively high speed, and a heater circuit contact 303b is early opened, and in a definite time, a main circuit contact 303a is opened. In this way, the optimum drying-state desired can be obtained.

9. 发明专利

JPS6137297A Clothing dryer 失效
标题翻译：服装干燥机
公开(公告)号：JPS6137297A
公开(公告)日：1986-02-22
申请号：JP16233584
申请日：1984-07-31
申请人： Hitachi Ltd
发明人： SUZUKI TOSHIO , KINOSHITA HIROSHI , NATSUNO KENJI , OZAWA TORU
IPC分类号： D06F58/28 , F26B25/00

10. 发明专利

JPS6137296A Clothing dryer 失效
公开(公告)号：JPS6137296A
公开(公告)日：1986-02-22
申请号：JP16233184
申请日：1984-07-31
申请人： Hitachi Ltd
发明人： SUZUKI TOSHIO , KINOSHITA HIROSHI , NATSUNO KENJI , OZAWA TORU
IPC分类号： D06F58/28 , F26B25/22

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