Scroll machine having improved discharge valve assembly

1. A valve retainer for securing a discharge valve assembly in a compressor, comprising:

the valve retainer connected between the discharge valve and a compressor unit of the compressor;

the valve retainer comprising:

a ring shaped body defining a central axis and a first and a second annular end;

a first plurality of tangs inwardly extending from the ring shaped body;

a second plurality of tangs formed at the first annular end and extending inwardly therefrom; and

a third plurality of tangs alternately formed at the first annular end with the second plurality of tangs, wherein the tangs of the second plurality of tangs are formed at a first angle relative to the ring shaped body and the tangs of the third plurality of tangs are formed at a second angle relative to the ring shaped body, the first and second angles being distinct.

2. The valve retainer of claim 1 wherein each of the tangs of the second plurality of tangs form an acute angle with the ring shaped body and wherein each of the tangs of the third plurality of tangs form an obtuse angle with the ring shaped body.

3. The valve retainer of claim 1 wherein the first plurality of tangs are formed on the ring shaped body in an area offset from the second and third plurality of tangs toward the second annular end.

4. The valve retainer of claim 1 wherein the first plurality of tangs are adapted to cooperatively engage structure defined on the discharge valve assembly and the second plurality of tangs are adapted to cooperatively engage structure defined on the compressor, wherein the cooperative engagement of the first and second plurality of tangs resists withdrawal of the discharge valve assembly.

5. The valve retainer of claim 1 wherein the compressor is a scroll compressor and the discharge valve assembly is on a scroll of the scroll compressor.

6. A method of positioning a discharge valve assembly relative to a scroll compressor structure using a valve retainer, the valve retainer comprising a ring shaped body defining a central axis and a first and a second annular end, a first plurality of tangs inwardly extending from the ring shaped body, and a second plurality of tangs formed at the first annular end and extending inwardly therefrom, the method comprising:

locating the valve retainer into a recess defined by the scroll compressor structure wherein the first annular end is captured under an annular ridge defined by a scroll; and

locating the discharge valve assembly into the recess of the scroll compressor structure wherein the first plurality of tangs formed at the second annular end provide a load between the discharge valve assembly and the scroll compressor structure to resist withdrawal of the discharge valve assembly from the scroll.

7. The method of claim 6 wherein locating the discharge valve assembly into the recess includes positioning the second plurality of tangs that inwardly extend from the ring shaped body into engagement with an annular shoulder of the discharge valve assembly, and wherein the scroll compressor structure includes a scroll member.

8. The method of claim 6 wherein the ring shaped body defines an interior volume and the first plurality of tangs define alternating tangs extending toward and away from the interior volume and wherein locating the discharge valve assembly includes locating the discharge valve assembly into the interior volume of the ring-like body.

9. A valve retainer for securing a discharge valve assembly in a compressor, comprising:

the valve retainer connected between the discharge valve and a compressor unit of the compressor;

the valve retainer comprising:

a ring shaped body defining a central axis and a first and a second annular end;

a first plurality of tangs extending from the ring shaped body in a direction toward the central axis;

a second plurality of tangs formed at the first annular end and extending in a direction toward the central axis and forming an acute angle with the ring shaped body; and

a third plurality of tangs formed at the first annular end and extending in a direction toward the central axis and away from the second annular end forming an obtuse angle with the ring shaped body.

10. The valve retainer of claim 9 wherein the second and third pluralities of tangs are alternately formed around the first annular end.

11. The valve retainer of claim 9 wherein the ring shaped body defines an interior volume and wherein the tangs of the second plurality of tangs are angled toward the interior volume and wherein the tangs of the third plurality of tangs are angled away from the interior volume.

12. The valve retainer of claim 9 wherein the compressor is a scroll compressor and the discharge valve assembly is on a scroll of the scroll compressor.

13. The valve retainer of claim 12 wherein the first plurality of tangs are adapted to cooperatively engage structure defined on the discharge valve assembly and the second plurality of tangs are adapted to cooperatively engage structure defined on the scroll, wherein the cooperative engagement of the first and second plurality of tangs resists withdrawal of the discharge valve assembly.

14. A valve retainer for securing a discharge valve assembly in a compressor, comprising:

a ring shaped body defining a central axis and a first and a second annular end;

a first plurality of tangs inwardly extending from the ring shaped body; and

a second plurality of tangs formed at one of the first and second annular ends and extending inwardly therefrom;

wherein the first plurality of tangs are adapted to cooperatively engage structure defined on the discharge valve assembly and the second plurality of tangs are adapted to cooperatively engage structure defined on the compressor, wherein the cooperative engagement of the first and second plurality of tangs resists withdrawal of the discharge valve assembly.

15. The valve retainer of claim 14 wherein the compressor is a scroll compressor and the discharge valve assembly is on a scroll of the scroll compressor.