HUMIDITY CONTROL SYSTEM FOR COLD STORAGE

摘要

A humidity control system for low-temperature refrigerator adopting a humidifying method to allow natural or forced evaporation of water flowing on an evaporation plate without spraying moisture particles is provided to give no damage to articles to be stored and to reduce maintenance costs. A humidity control system for low-temperature refrigerator comprises: an evaporation plate(220) made of a water-absorbing material and inclined downwardly toward the lower side from the upper side; a spray device(230) to spray water to the upper side of the evaporate plate; a water supply device(240) to supply water to the spray device; a water storage tank(270) installed at the lower side and storing water falling at the lower side of the evaporation plate; a circulating waterway(261) connecting the water storage tank and spray device; and a water-level sensor to measure the water level of the water storage tank. The water supply device contains a water supply pipe(244), an opening and closing device(241,245) to receive the signal of the water-level sensor and open and close the water supply device, a filter device(242) and a motor(243).