×

Passive Device with Micro Capillary Pumped Fluid Loop

  • US 20110192575A1
  • Filed: 07/11/2008
  • Published: 08/11/2011
  • Est. Priority Date: 08/08/2007
  • Status: Active Grant
First Claim
Patent Images

1. A passive thermal regulation device, comprising at least one heat transfer loop with capillary pumping of a heat-carrier fluid, said loop comprising an evaporator including a microporous mass, and a condenser for being in heat exchange relationship with a heat source and a cold source respectively, and tubing connecting said evaporator to said condenser and transporting said heat-carrier fluid essentially in vapour phase from said evaporator to the said condenser and essentially in liquid phase from said condenser to said evaporator, the tubing comprising an outer tube closed on itself and forming a continuous loop, and housing said microporous mass, which has a substantially elongated and cylindrical shape and which ensures a flow of said liquid-phase heat-carrier fluid by capillary pumping, wherein said liquid phase of said fluid originating from said condenser is pumped to a first longitudinal end of said microporous mass of said evaporator, and the said vapour phase of said fluid is discharged by a second longitudinal end of said microporous mass of said evaporator, and said first longitudinal end is separated, by a first longitudinal portion of said microporous mass, from a second longitudinal portion of said microporous mass, in heat exchange relationship with the heat source, said first longitudinal portion extending into a thermally insulating sleeve located in a portion of said outer tube, said sleeve having an outer surface which is in contact with an inner surface of said outer tube, while said second portion of microporous mass is located outside said sleeve and has an outer surface which is in contact without play with said inner surface of said outer tube.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×