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Document Type and Number:
Japanese Patent JP3140709
Kind Code:

PROBLEM TO BE SOLVED: To prevent various germs from being reproduced by eliminating a float and hence simplifying a structure.
SOLUTION: Dry-bulb and wet-bulb temperatures t and t' are measured by dry-bulb and wet-bulb temperature sensors 4 and 1, respectively, and the sensors are loaded into a water-supply control part 6 and then amount of wick water consumption is obtained by an expression being stored in advance, and the operation rate of an electromagnetic pump 4 is controlled so that the amount of water where a small amount of surplus water is added can be fed. The surplus water is overflown from the water supply port of a wick pan 3, thus eliminating the need for controlling the water level due to a float. The water level is controlled by changing the amount of water feed according to usage conditions, thus reducing the surplus water, eliminating the need for the collection, and simplifying a device. Since the water supply part of the wick pan is short and, for example, a tank for controlling water level is eliminated, thus reducing the amount of preserved water, reducing the residence time of water, and suppressing the reproduction of various germs.

Yoshihiro Fujita
Application Number:
Publication Date:
March 05, 2001
Filing Date:
March 04, 1997
Export Citation:
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Tabai Espec Co., Ltd.
International Classes:
G01K1/08; G01N25/62; (IPC1-7): G01N25/62
Domestic Patent References:
Attorney, Agent or Firm:
Kenji Kageyama