US 11,806,837 B2
Device for producing CO2 pellets from CO2 snow and cleaning device
Ruwantha De Silva, Schwieberdingen (DE); Juergen Gassmann, Winnenden (DE); Henning Hayn, Stuttgart (DE); and Dieter Plachke, Winnenden (DE)
Assigned to Alfred Kärcher SE & Co. KG, Winnenden (DE)
Filed by Alfred Kärcher SE & Co. KG, Winnenden (DE)
Filed on Nov. 13, 2018, as Appl. No. 16/188,955.
Application 16/188,955 is a continuation of application No. PCT/EP2016/060913, filed on May 13, 2016.
Prior Publication US 2019/0076989 A1, Mar. 14, 2019
Int. Cl. B24C 11/00 (2006.01); B24C 1/00 (2006.01); C01B 32/55 (2017.01); F25C 1/04 (2018.01)
CPC B24C 11/00 (2013.01) [B24C 1/003 (2013.01); C01B 32/55 (2017.08); F25C 1/04 (2013.01)] 34 Claims
OG exemplary drawing
 
1. A device for producing high-strength CO2 pellets from CO2 snow, in particular, for a cleaning device for blasting surfaces to be treated with a mixed-flow consisting of a compressed gas and CO2 pellets, comprising a main compressing device for compressing CO2 snow for forming CO2 pellets, further comprising a pre-compressing device for pre-compressing CO2 snow produced by expanding liquid CO2, wherein the pre-compressing device is in the form of a fluid-mechanical pre-compressing device, wherein the pre-compressing device comprises an expansion device for producing CO2 snow from liquid or gaseous CO2 and a pre-compression chamber for receiving and pre-compressing the produced CO2 snow and wherein the expansion device and the pre-compression chamber are connected to one another in fluidic manner.