| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a robust heating device in which heat transfer efficiency is superior and assembling is easy, and breakage of a heating element is less. SOLUTION: In a liquid environment such as a pisciculture tank 12, the heater and a heating control unit 10 are installed wherein proper temperatures can be maintained appropriately. The heating control unit 10 has the heating element 26 in the heater device 14. The heater device 14 has a base 32 at least one of which is elastically deformable, a partition 34 and a case 28 including the upper cap 36. A case 28 prevents the breakage of the heating element 26. In order to prevent that the case 28 is contacted with the heating element 26, a protrusion is equipped in the inside of the case 28. The control unit 16 controls the heater device 14.</p> |
