Solar heat collecting device
专利汇可以提供Solar heat collecting device专利检索，专利查询，专利分析的服务。并且PURPOSE:To enable to set the effective holding water volume larger by a method wherein the opening of a feed water valve by means of a water level detector is made possible after the elapse of time necessary for draining the water in a heat collecting circuit from the stop of a heat collecting pump. CONSTITUTION:A control device C is energized through the normally closed contact point of a control relay X1 and provided with a timer T, which closes its own timer contact point after the elapse of the energizing time longer than the time necessary for draining the water in the heat collecting circuit, and an auxiliary relay X5 energized by said timer T. The feed water valve 7 is contrived to be open by energizing both said auxiliary relay X5 and a control relay X3. Furthermore, because the feeding of water is contrived to be not performed during the operation of the heat collecting pump 4 but performed in the case that the water level is below the starting level for feeding water L1 even when the water in the heat collecting circuit is drained after the end of the heat collecting operation, the holding water volume lying between the full water level H2 and the stopping level for feeding water H1 is not necessary to be larger than the volume drained from the heat collecting circuit and can be limited to the minimum required volume or in other words the effective holding water volume (the volume lying below H1) can be made larger and economical hot water holding is realized.，下面是Solar heat collecting device专利的具体信息内容。
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