US 11,953,002 B2
Scroll compressor for compressing a refrigerant and method for oil enrichment and distribution
Iman Nezami, Remscheid (DE); Laura Arriazu, Pulheim (DE); and Thomas Klotten, Cologne (DE)
Assigned to HANON SYSTEMS, Daejeon (KR)
Appl. No. 17/756,729
Filed by Hanon Systems, Daejeon (KR)
PCT Filed Jun. 30, 2021, PCT No. PCT/KR2021/008299
§ 371(c)(1), (2) Date Jun. 1, 2022,
PCT Pub. No. WO2022/005212, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 10 2020 117 373.3 (DE), filed on Jul. 1, 2020.
Prior Publication US 2023/0113626 A1, Apr. 13, 2023
Int. Cl. F04C 18/02 (2006.01); F04C 27/00 (2006.01); F04C 29/00 (2006.01); F04C 29/02 (2006.01); F16C 33/78 (2006.01)
CPC F04C 18/0215 (2013.01) [F04C 27/00 (2013.01); F04C 29/0021 (2013.01); F04C 29/026 (2013.01); F04C 29/028 (2013.01); F16C 33/7846 (2013.01); F16C 33/785 (2013.01); F04C 2240/50 (2013.01); F04C 2240/807 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A scroll compressor for compressing a refrigerant, comprising:
a compressor housing and two scrolls nested within the compressor housing with a respective base plate and a scroll-shaped wall extending from a front of the base plate, wherein a first one of the scrolls is fixed in a stationary manner and a second one of the scrolls is movable in an eccentric manner on a circular path and by moving the second one of the scrolls, a volume of compressor chambers formed between the scrolls can be changed in a cyclical manner;
an eccentric drive by means of which the second one of the scrolls can be moved on a circular path, which comprises a drive shaft rotatable about an axis of rotation and a balance weight rotatable with the drive shaft and via which the second one of the scrolls is connected to the drive shaft in an eccentric manner;
a first bearing via which the drive shaft is supported on the compressor housing, and a second bearing via which the second one of the scrolls is supported on the balance weight; and
a counter-pressure space within the compressor housing on a back of the base plate of the second one of the scrolls, in which a cavity of the balance weight and of the second bearing is formed, wherein a sealing washer is fixed on the first bearing at a side of the first bearing directed to the cavity of the balance weight and of the second bearing such that the sealing washer seals the first bearing on one side in a radially outer part of a region between an outer ring and an inner ring of the first bearing through which fluid can flow and is spaced from the inner ring of the first bearing in a radial manner such that a gap through which fluid can flow remains, wherein during the operation of the scroll compressor, a fluid mixture of refrigerant gas and oil is introduced into the counter-pressure space and the oil separates from the fluid mixture due to a centrifugal force which occurs in a flow of the mixture of refrigerant gas and oil caused by the balance weight, wherein the sealing washer acts as a barrier up to a setting of a radial oil level which is sufficient for lubrication of the second bearing in the cavity of the balance weight and of the second bearing, wherein the sealing washer is ring shaped with an inner diameter which corresponds to the radial oil level which sets due to a barrier effect of the sealing washer, and wherein a first axis extending in an axial direction of each of the first bearing and the second bearing is always arranged along the inner diameter of the sealing washer while passing between the outer ring and the inner ring of the second bearing with respect to at least one position along the second bearing in a circumferential direction thereof to result in the radial oil level passing between the outer ring and the inner ring of the second bearing along the first axis for lubricating the second bearing via the entry of the oil between the outer ring and the inner ring of the second bearing.