Hermetically enclosed refrigerant compressor arrangement
Provided is a simplified design for spring retainers in a hermetically enclosed refrigerant compressor. A hermetically enclosed refrigerant compressor includes a hermetically tight enclosure, and an electrical motor unit and a compressor supported relative to the enclosure by springs. The electrical motor unit and compressor include a first spring retainer and the enclosure includes a second spring retainer. The first and second spring retainers hold springs such that the electrical motor and compressor are supported relative to the enclosure. The first spring retainer is integrated with the electrical motor unit and the compressor.
1. A hermetically enclosed refrigerant compressor arrangement comprising:
a hermetically tight enclosure;
a unit comprising an electrical motor, the electrical motor comprising a stator with a stator core lamination, a stator winding, and an electrically insulating end plate disposed between the stator core lamination and the stator winding;
a compressor with a cylinder head cover; and
springs fixed on the unit via first spring retainers and on the enclosure via second spring retainers;
wherein each of the cylinder head cover and the end plate of the stator comprises at least one integrated first spring retainer.
2. The arrangement according to claim 1 , wherein the cylinder head cover and the end plate have bottom sides, which are located in the same horizontal level.
3. The arrangement according to claim 2 , wherein all springs are located in the same horizontal level.
4. The arrangement according to claim 1 , wherein the stator has a stator core lamination, in which grooves are provided, the end plate engaging said grooves.
5. The arrangement according to claim 4 , wherein between the grooves the stator core lamination has webs, one front side of each web being covered by the end plate.
6. The arrangement according to claim 1 , wherein the end plate is made as a plastic injection molded part.
7. The arrangement according to claim 1 , wherein the cylinder head cover is made as a pressure or injection molded part of aluminum.
8. The arrangement according to claim 1 , wherein the cylinder head cover has a reinforcement brace.
9. The arrangement according to claim 8 , wherein the reinforcement brace is located in extension of a first spring retainer.
10. The arrangement according to claim 1 , wherein a safety element is located on the inside of the enclosure facing away from the springs, said safety element engaging an opening of a safety ring located on the unit.
11. The arrangement according to claim 10 , wherein the safety element and/or the safety ring has a flexible coating.
12. The arrangement according to claim 1 , wherein the motor has a drive shaft, whose lower end is guided through an opening in a safety plate, which is fixed on the inside of the enclosure.
13. The arrangement according to claim 1 , wherein at least one end of at least one spring has a retaining insert, with which it is fitted on its spring retainer.
14. The arrangement according to claim 1 , wherein the springs are located under the unit.