| 摘要 |
<p>A first aspect of the present invention provides an impeller device, as an impeller device (120) comprising an impeller (121) and a housing (122) accommodating the impeller. The housing (122) comprises a body composed by stacking two or more plates to form a space for encircling a lateral side of the impeller (121) and accommodating the impeller. Moreover, a second aspect of the present invention provides a heating circulation apparatus comprising the impeller device, a heater (110), and a control box (130) which controls the operation of the heater (110) and the impeller device. In addition, a third aspect of the present invention provides a circulating constant temperature water bath comprising the heating circulation apparatus (100) and a bath (200).</p> |
