Danfoss Commercial Compressors

Mickael Bron

Pierre Ginies

Dominique Gross

Franck Meynand

Stephane Watts

Jean-Francois Le Coat

Rémi Bou Dargham

Yusong Sun

The scroll compressor includes a fixed scroll; an orbiting scroll (); a drive shaft (); a support arrangement () on which is slidably mounted the orbiting scroll (); a rotation preventing device configured to prevent rotation of the orbiting scroll () with respect to the fixed scroll, the rotation preventing device including orbital discs () respectively arranged in circular receiving holes () provided on the support arrangement (), each orbital disc () being provided with an outer circumferential bearing surface () configured to cooperate with an inner circumferential bearing surface () provided on the respective circular receiving hole (); and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces () with oil supplied from an oil sump, the lubrication system including an oil reservoir () in which part of the oil supplied to the lubrication system is collected during operation of the scroll compressor, and a plurality of lubrication passages () provided on the support arrangement (), each lubrication passage () including an oil outlet aperture () emerging in a bottom surface of a respective circular receiving hole () and an oil inlet aperture () emerging in the receiving chamber ().

Scroll compressor provided with an orbital disc lubrication system

The scroll compressor includes stationary and moving volutes each including a scroll plate provided with a spiral wrap, the spiral wraps defining the variable-volume compression chambers, a delivery conduit including a first end emerging in a central compression chamber and a second end designed to be communicated with a delivery chamber, a delivery valve movable between closing and opening positions for closing and opening at least one delivery opening arranged to communicate the delivery conduit and the delivery chamber, at least one bypass valve associated with a bypass passage arranged to communicate the delivery chamber with an intermediate compression chamber. The compressor includes a retaining plate mounted on the scroll plate of the stationary scroll and on which first and second retaining elements are formed, the latter being arranged to limit respectively the amplitude of movement of the delivery valve and of each bypass valve toward the opening position thereof.

Scroll refrigeration compressor with improved retaining means and bypass valves

The scroll refrigeration compressor includes a stationary volute and a moving volute provided with spiral wraps defining variable-volume compression chambers, a separating member sealably mounted on a plate of the stationary volute so as to allow a relative movement between the separating member and the stationary volute, a delivery chamber at least partially defined by the separating member and the sealed casing. The compressor further includes a bypass passage arranged to communicate the delivery chamber with an intermediate compression chamber, and a anti-return device comprising a closing member movable between closing and opening positions for closing and opening the bypass passage, and an enclosure, positioned between the separating member and the plate of the stationary volute, including a first portion sealably mounted in a housing defined by the separating member and oriented substantially parallel to the longitudinal axis of the compressor.

Scroll refrigeration compressor with anti-return device

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Saint Bonnet de Mure, France

Mickael Bron