Scroll compressor with axially floating non-orbiting scroll and no separator plate

A scroll compressor comprising:

• a first scroll having a base and a generally spiral wrap extending from said base;
• a second scroll having a base and a generally spiral wrap extending from said base;
• a shaft for causing said second scroll to orbit relative to said first scroll, said first scroll being operable to move axially along a rotational axis of said shaft relative to said second scroll;
• said first and second scrolls and said shaft being mounted within a sealed housing, said sealed housing including a center shell and an end cap enclosing said center shell, a refrigerant trapped between said wraps of said first and second scrolls being compressed and delivered through a discharge port extending through said base of said first scroll into a discharge pressure chamber, said discharge pressure chamber being defined between a face of said base of said first scroll and said end cap, a seal being formed between a face of said first scroll which faces said end cap and said end cap;
• and
• said seal defining a discharge pressure chamber radially inwardly of said seal and a suction pressure chamber radially outwardly of said seal, said end cap being generally horizontal radially outward of said seal, and having a domed area extending axially outwardly away from said base of said first scroll radially inwardly of said seal to define an enlarged discharge pressure chamber.