Cold blast uchiwa which utilizes heat of vaporization

摘要

Cold air is produced by the heat of vaporization.The container made of plastic is made into the container, and frozen ice is put into the container. A hole passing through the container is formed in the branch part of the handle and the bone, and the dissolution liquid is taken out from the small hole, and the fan is covered with a fan cloth covering the hole, and the fan is cooled by the heat of vaporization.