| 主权项 |
1. A boiling heat transfer device comprising:
a heat receiving portion that boils a liquefied refrigerant to convert it to vapor, and contacts with a device to be cooled and cools the device to be cooled, wherein the heat receiving portion comprises a main body portion and a cover portion, the main body portion comprises a box shape and a bottom plate contacting with the device to be cooled, the cover portion covers the main body portion, and an outer shape of the cover portion is a truncated pyramid; a vapor tube that connects to an upper portion of the heat receiving portion and conveys the vapor generated by the heat receiving portion; a heat dissipating portion that condenses the vapor conveyed from the vapor tube to convert it to a liquefied refrigerant and dissipates heat to an atmosphere; a liquid tube that returns to the heat receiving portion the liquefied refrigerant condensed by the heat dissipating portion; and a plurality of boiling promotion plates provided in the heat receiving portion, wherein each of the boiling promotion plates comprises a porous material made of aluminum, wherein each of the boiling promotion plates comprises a lower end and an upper end, the lower end contacting with the bottom plate of the main body portion, and the upper end is apart from the cover portion and positioned below the cover portion, and wherein at least a portion of a cross-sectional area of a flow passage of the vapor in the heat receiving portion gradually decreases from a lower portion of the heat receiving portion toward the upper portion of the heat receiving portion. |
