| US 7,478,792 B2 | ||
| Microvalve having magnetic wax plug and flux control method using magnetic wax | ||
| Kwang-wook Oh, Hwaseong-si (Korea, Republic of); Kak Namkoong, Seoul (Korea, Republic of); and Chin-sung Park, Yongin-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., (Korea, Republic of) | ||
| Filed on Apr. 03, 2006, as Appl. No. 11/396,764. | ||
| Claims priority of application No. 10-2005-0027829 (KR), filed on Apr. 02, 2005. | ||
| Prior Publication US 2006/0219308 A1, Oct. 05, 2006 | ||
| Int. Cl. F16K 31/00 (2006.01); F16K 31/18 (2006.01) | ||
| U.S. Cl. 251—11 [251/129.01; 137/251.1; 137/828] | 20 Claims |
| 1. A microvalve having a magnetic wax plug, the microvalve comprising:
a micro fluidic structure having an inlet portion and an outlet portion;
a magnetic wax plug provided at a predetermined section where the inlet portion and the outlet portion meet, existing in a
solid state, melted at a temperature higher than a predetermined temperature, and reversibly moving along a magnetic field,
so as to control flux of a fluid through the micro fluidic structure;
a heating portion provided corresponding to the section and heating the magnetic wax plug to be melted; and
a magnetic field application portion selectively applying a magnetic field to a position where the melted magnetic wax plug
arrives.
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