Humidity controller

Details Humidity controller Humidity controller

1989-06-14

1991-10-22

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

204425, 204430, 204283, 73335, 733365, G01N 2726, G01W 102, C25B 1103

Patent

active

050592912

ABSTRACT:
A humidity controller has a humidity controlling element disposed in the opening of a chamber and comprising a hydrogen ion conductor membrane, porous electrodes disposed on two surfaces of the hydrogen ion conductor membrane and collecting electrodes disposed on opposite surfaces of the porous electrodes. Each of the collecting electrodes is disposed over an area than the whole area of each surface of the hydrogen ion conductor membrane such that the current density at a portion of the hydrogen ion conductor membrane where no collecting electrode is located is reduced by at most 1/2, thereby reducing the stress due to the difference between the thermal expansion coefficients of the porous electrodes and the collecting electrodes and limiting disconnection between these two groups of electrodes. The difference between the humidity control performance of this humidity controller and that of an arrangement in which collecting electrodes are disposed over the whole surfaces of the porous electrodes is small.

REFERENCES:
patent: 3188283 (1965-06-01), Cole
patent: 4562725 (1986-01-01), Oka et al.
patent: 4693953 (1987-09-01), Torikai

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