Variable speed scroll compressor
View Patent ↗A compressor is provided and may include a driveshaft and an orbiting scroll member driven by the driveshaft. The orbiting scroll member may include an end plate, a spiral wrap extending from the end plate, and a chamber formed by the orbiting scroll member and disposed on an opposite side of the end plate than the spiral wrap. A counterweight may be fixed for rotation with the driveshaft and may be received within the chamber of the orbiting scroll member.
1. A compressor comprising:
a driveshaft;
an orbiting scroll member driven by said driveshaft and including a first member and a second member that are separate components, said first member including an end plate and a spiral wrap extending from said end plate, said first member and said second member cooperating to form a chamber therebetween, said chamber being disposed on an opposite side of said end plate than said spiral wrap; and
a counterweight fixed for rotation with said driveshaft and received within said chamber of said orbiting scroll member.
2. The compressor of claim 1 , wherein said second member has a hub portion, a wall portion, and a base portion extending between and connecting said wall portion and said hub portion, said base portion opposing said end plate and defining a chamber therebetween.
3. A compressor comprising:
a driveshaft;
an orbiting scroll member driven by said driveshaft and including an end plate, a spiral wrap extending from said end plate, a hub portion, and a chamber formed by said orbiting scroll member and disposed on an opposite side of said end plate than said spiral wrap;
a bushing disposed between said hub portion and said driveshaft; and
a counterweight fixed for rotation with said driveshaft via said bushing and received within said chamber of said orbiting scroll member, wherein said counterweight includes a first portion attached to said bushing, a second portion extending from said first portion and info said chamber in a direction away from said end plate, and a third portion extending from said first portion, into said chamber, and in a direction toward said end plate.
4. A compressor comprising:
a driveshaft;
an orbiting scroll member driven by said driveshaft and including a first member having an end plate and a spiral wrap extending from said end plate and a second member having a hub portion, a wall portion, and a base portion extending between and connecting said wall portion and said hub portion, said base portion opposing said end plate and defining a chamber therebetween; and
a counterweight fixed for rotation with said driveshaft and received within said chamber of said orbiting scroll member.
5. The compressor of claim 4 , further comprising a bushing disposed between said hub portion and said driveshaft, said counterweight fixed for rotation with said driveshaft via said bushing.
6. The compressor of claim 5 , wherein said counterweight includes a first portion attached to said bushing and a second portion extending from said first portion and into said chamber in a direction away from said end plate.
7. The compressor of claim 6 , wherein said first portion is attached to a distal end of said bushing and said bushing is attached at a distal end of said driveshaft.
8. The compressor of claim 6 , wherein said first portion is attached to an outer surface of said bushing along a length of said bushing between a first end and a second end, said bushing being attached to said driveshaft at a distal end of said driveshaft.
9. The compressor of claim 8 , wherein said counterweight includes a third portion extending from said first portion, into said chamber, and in a direction toward said end plate.
10. The compressor of claim 4 , wherein said wall portion extends from said base portion toward said first member by a greater extent than said hub portion.
11. The compressor of claim 4 , further comprising at least one seal at a junction of said wall portion and said first member.
12. The compressor of claim 4 , further comprising a passageway formed through said base portion, said passageway operable to permit fluid to drain from said chamber.
13. The compressor of claim 4 , further comprising a recess formed in said end plate on an opposite side of said end plate than said spiral wrap, said recess receiving an insulation element therein.
14. The compressor of claim 4 , wherein said first member and said second member are separate components.
15. The compressor of claim 1 , wherein said second member defines a hub portion.
16. The compressor of claim 15 , further comprising a bushing disposed between said hub portion and said driveshaft, said counterweight fixed for rotation with said driveshaft via said bushing.
17. The compressor of claim 16 , wherein said counterweight includes a first portion attached to said bushing and a second portion extending from said first portion and into said chamber in a direction away from said end plate.
18. The compressor of claim 17 , wherein said first portion is attached to a distal end of said bushing and said bushing is attached at a distal end of said driveshaft.
19. The compressor of claim 17 , wherein said first portion is attached to an outer surface of said bushing along a length of said bushing between a first end and a second end, said bushing being attached to said driveshaft at a distal end of said driveshaft.
20. The compressor of claim 15 , wherein said second member includes a base portion and a wall portion surrounding said hub portion and attached to said first member, said wall portion extending from said base portion of said second member toward said first member by a greater extent than said hub portion.
21. The compressor of claim 20 , further comprising a passageway formed through said base portion, said passageway operable to permit fluid to drain from said chamber.