Hitachi, Ltd.

Hiroshi Ohsugi

Isao Hiyama

Tamotu Shikamori

Hiroyuki Toshimitsu

Tamotsu Shikamori

Soichi Fukuzawa

Hideyuki Tobita

Yoshiaki Takeda

Toshiyasu Kamano

Sizuo Thuruta

Toshikazu Ohonishi

Masayoshi Hirayama

Kenichi Kubo

Yoshihiro Ohta

Hiroshi Kinoshita

Takao Ohsawa

Yousuke Nagano

Hideki Takayama

Toshifumi Koike

Takeo Honma

Yosuke Nagano

Takashi Ishino

Yoshio Ohwa

Shizuo Turuta

Hikaru Kaji

Kazufumi Ikeda

Toshiyuki Hori

An ion removes provided between a feed water valve for supplying water to an outer tub and a detergent supply case and an upper portion from the outer tub includes a cylindrical vessel in which sodium type strong acid positive ion exchange resin is filled up, a salt water vessel provided above the cylindrical vessel, and a salt vessel provided in the salt water vessel for receiving salt to enable plural regeneration of an ion exchange resin. Salt from the salt vessel is dissolved in water supplied to the salt water vessel and salt water having a concentration of about 10% is generated. After completion of every washing feed water cycle and every rinsing feed water cycle with an interval, the salt water is caused to flow into the ion exchange resin and the ion exchange resin is automatically regeneration-processed.

Washing machine

In a full-automated washer, a cloth amount sensor detects a quantity of an object being washed which is thrown into a washing drum as a value inclusive of information regarding a degree of bulkiness of the object to be washed. A processing circuit included in the full-automated washer is responsive to a detection output signal from the cloth amount sensor to determine a water supply amount, a cleanser feed amount, a stirring time and a rinsing time. The cloth amount sensor is mounted to a stirring motor. Upon an OFF-state of the motor, the detection output signal is generated by measuring a voltage waveform induced by inertial motion which varies in accordance the degree of bulkiness of the object to be washed.

Full-automated washer

A full automatic washing machine having a washing/drying cell rotatably mounted in an outer cell, a rotary blade unit provided on the bottom of the washing/drying cell and provided with a cylindrical member mounted thereon, and a washing machine motor adapted to rotate the blade unit in forward and backward directions during washing and rinsing and, to rotate the washing/drying cell at a high speed in one direction during drying. The ratio of the outside diameter of the rotary blade unit to the inside diameter of the washing/drying cell is selected to range between 0.6 and 0.8. The speed of rotation of the rotary blade unit is selected to fall within the range of between 100 and 250 rpm. The time length of rotation of the washing machine motor in each of forward and backward directions is selected to be less than 1 second.

Full automatic washing machine

A washing machine is disclosed in which water is poured on the washing within a washing and dehydrating tank through a water supply port while turning the washing and dehydrating tank slowly, to thereby cause the water to sink into the washing before the normal washing thereof so as to reduce the bulk of the washing or prevent the floating of the washing. Thus, the regular agitating and washing of the washing are well performed.

When an abnormal washing condition occurs during a washing process, an auto-off power source switch is made automatically to present an off condition after a long shelf time such as one hour. In case of the abnormal washing condition of the washing process, since the switch maintains the long shelf time, an operator can notice such an abnormal condition during this long shelf time and then remaining normal washing process can be carried out continuously by getting rid of the abnormal cause. It is therefore unnecessary to re-set the washing process. After the washing process has been finished, the switch is made automatically to present the off condition at a short shelf time such as five minutes. During this short shelf time, it is unnecessary to start the switch at an on condition so as to re-start for carrying out next washing process.

Full automatic electric washing machine having an auto-off power source

In a fully-automated washer, a cloth amount sensor detects a quantity of an object being washed as a value inclusive of information regarding a degree of bulkiness of the object to be washed. A processing circuit is responsive to a detection output signal from the cloth amount sensor to determine a water supply amount, a cleanser feed amount, a stirring or agitating time and a rinsing time. The cloth amount sensor is mounted to a stirring or agitating motor. Upon an OFF-state of the motor, the detection output signal is generated by measuring a voltage waveform induced by inertial motion which varies in accordance the degree of bulkiness of the object to be washed.

Fully-automated washer

A fully automatic washing machine having a washing/drying cell rotatably mounted in an outer cell, a rotary blade unit provided on the bottom of the washing/drying cell and provided with a cylindrical member mounted thereon, and a washing machine motor adapted to rotate the blade unit in forward and backward directions during washing and rinsing and, to rotate the washing/drying cell at a high speed in one direction during drying. The ratio of the outside diameter of the rotary blade unit to the inside diameter of the washing/drying cell is selected to range between 0.6 and 0.8. The speed of rotation of the rotary blade unit is selected to fall within the range of between 100 and 250 rpm. The time length of rotation of the washing machine motor in each of forward and backward directions is selected to be less than 1 second.

Fully automatic washing machine

Electric washing machine

Growing community of inventors

Hitachi, Japan

Hiroshi Ohsugi