Sanyo Electric Co., Ltd.

Konica Corporation

The Tokyo Electric Power Company, Incorporated

Tokyo Sanyo Electric Co.

Toshiaki Kawada

Masayuki Kurematsu

Takeshi Osawa

Kouichi Noma

Kazuto Matsuda

Toshio Sakurai

Yuio Yoshiokaya

Satoshi Yuzawa

Noriyuki Shimamura

Toshio Fukamachi

Souichiro Shibata

Shoichi Kuroda

When waste liquid is concentrated using a radiant heat section and a heat absorbent section of a heat pump circuit, in the proper place of the heating region of the heat pump circuit, a detector for detecting the pressure and/or temperature of the heat transfer medium is provided, or a detector for detecting the value of an electric current flowing through or the amount of electric power consumed in a system which includes a compressor for the heat pump circuit, is provided, and by the provision of a control system which can halt the concentration operation when the detected value exceeds a set value, both with a liquid in which the concentration of the non-volatile component is low so that a comparatively long time is required for the concentration operation, and, conversely, with a liquid in which the concentration of the non-volatile component is high so that the concentration operation is completed in a comparatively short time, the concentration operation has good efficiency, and can always be halted at a uniform liquor concentration.

Apparatus for concentrating waste liquid

An ultrasonic humidifier for atomizing water in a vessel by an ultrasonic oscillator and supplying atomized water with air into a room by a blower comprising a humidity sensor detecting the humidity in the room and a thermosensor detecting the temperature in the room. The operation of said ultrasonic oscillator is controlled in such a manner that the value of the detected humidity compensated by said thermosensor may be set for the desired value.

Ultrasonic humidifier

Growing community of inventors

Oizumi-machi, Japan

Toshiaki Kawada