Patent ID: 9534848
Date: 2017-01-03
CPC Classifications: F21V,F28C

Claim:
1. An apparatus for cooling a bulb, comprising: a cooling fluid manifold configured to receive a cooling fluid and distribute the cooling fluid substantially uniformly around a perimeter of the bulb; and one or more cooling fluid distribution elements disposed on the cooling fluid manifold, at least one of the cooling fluid distribution elements comprising an annular nozzle defining an upper chamber and a lower chamber connected by a restricted space, the upper chamber configured to receive the cooling fluid and the lower chamber configured to distribute the cooling fluid from the cooling fluid manifold along a surface of the bulb, wherein the one or more cooling fluid distribution elements comprise airfoils oriented to produce a substantially laminar cooling fluid flow along the surface of the bulb, wherein the restricted space is configured to control a flow of cooling fluid from the upper chamber to the lower chamber, and further configured to produce Joule-Thomson cooling of the cooling fluid.