| 摘要 |
<p>PROBLEM TO BE SOLVED: To heat a high-viscosity lubricant uniformly without generating, for example, a sludge by accommodating a storage tank for the lubricant with an agitation means inside in a bottomed water tank with a heater at an inner bottom to that a slight space is created at an area to the inner surface of the water tank and by filling water into the space. SOLUTION: An electrical heater 2 is sealed to a bottom plate 1a of a bottomed, cylindrical water tank 1. A ring-shaped flange 3a in a U groove shape facing downward being provided at the upper edge of a coaxial, bottomed and cylindrical storage tank 3 with a smaller diameter than the water tank 1 is fixed to the upper-edge outer-periphery surface of the water tank 1, thus suspending the storage tank 3 so that a slight space S is formed at an area to the outer-periphery surface of the water tank 1. The space S is filled with water 4 and the storage tank 3 is filled with a high-viscosity lubricant 5.</p> |
