| 摘要 |
PROBLEM TO BE SOLVED: To make a salt water tank part compact by forming a part for absorb ing the increase portion of water level in charging salt in a salt water tank part. SOLUTION: A raw water tank part 3 is integrally formed in the salt water tank part 4 and the salt water tank part 4 is communicated with the raw water tank part 3 through a communicating means. A control part 6 and a water purifying part 7 are arranged in the upper part of a resin housing part, a casing 9 is provided to effectively utilize the remaining part 8 and the structure is constituted so as to communicate a space part 10 formed in the casing 9 with the salt water tank part 4. That is, the volume of the upper part of the salt water tank part 4 is extended to absorb the increase part of the water level at the time of charging the salt in the salt water tank part 4 by the space part formed in the casing 9. As a result, the salt water tank part 4 is made compact on the whole.
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