Whirlpool S.a.

Universidade Federal De Santa Catarina

Fernando Withers Torres

Aloisio Nelmo Klein

Cristiano Binder

Roberto Binder

Valderes Drago

José Daniel Biasoli De Mello

Cristian Bernardi

Andre Messias Teixeira

The present disclosure refers to a partial texturization applied on a contact interface of a scroll fluid compressor. The scroll fluid compressor may have an orbiting whorl, a non-orbiting whorl, and a block frame which holds the orbiting whorl in contact with the non-orbiting whorl. The partial texturization can be applied on the lower surface of the orbiting whorl, the upper surface of the block frame, or both, and can include at least two first regions separated by second regions. The first regions have surfaces including a plurality of micro-cavities and the second regions have substantially smooth surfaces.

Hydrodynamic bearing applied on a contact interface of a fluid compressor based on a spiral type mechanism

The process basically comprises: dissolving a lamellar disulphide, as a source of the solid lubricant, in an aqueous solvent, forming a first aqueous solution; dissolving a reducing agent, as hydroxylamine, sodium hypophosphite or sodium borohydride, in an aqueous solvent, forming a second aqueous solution; mixing the first and second aqueous solutions, forming a third aqueous solution; neutralizing the pH of the third aqueous solution; dissolving a sulphur source, in an aqueous solvent, forming a fourth aqueous solution; mixing the third and fourth aqueous solutions, forming a fifth aqueous solution, which is contained and heated in an autoclave; cooling the fifth aqueous solution to the room temperature; and removing, from the autoclave, the nanoparticles in powder form.

Process for production of nanoparticles of solid lubricant and lubricant dispersions stable in oil and in water

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Fernando Withers Torres