Axial thrust applying structure for the scrolls of a scroll type compressor

Claim 2

A scroll type compressor including a housing with a front section and a rear section; a fluid inlet in the housing; a fluid outlet in the housing; a non-orbital scroll including an end plate, a spiral wrap and an outlet passage through a central portion of the end plate mounted in the rear section of the housing by a mounting assembly which permits axial movement of the non-orbital scroll relative to the housing; an orbital scroll including an end plate and a spiral wrap mounted in the front portion of the housing and cooperating with the non-orbital scroll to form at least one pair of fluid pockets; a scroll drive to drive the orbital scroll in an orbital path; an anti rotation assembly to prevent rotation of the orbital scroll while permitting orbital movement; and an axial thrust load assembly including a baffle plate mounted in the rear section of the housing, a first pressure chamber flange integral with the baffle plate and extending forwardly toward the scrolls, a second pressure chamber flange integral with the baffle plate, extending forwardly toward the scrolls and surrounding the first pressure chamber flange grooves in the end plate of the non-orbital scroll telescopically receiving the first pressure chamber flange and the second pressure chamber flange and a resilient seal in each groove for sealing between the end plate of the non-orbital scroll and the forward edges of the first and second pressure chamber flanges operable to maintain sealing during axial movement of the non-orbital scroll within the compressor housing, a passage through the end plate of the non-orbital scroll between the first and second pressure chamber flanges, and wherein the first pressure chamber flange surrounds the outlet passage.

Claim 3

A scroll type compressor including a housing with a front section and a rear section; a fluid inlet in the housing; a fluid outlet in the housing; a non-orbital scroll including an end plate, a spiral wrap and an outlet passage through a central portion of the end plate, mounted in the rear section of the housing by a mounting assembly including a plurality of pins extending forwardly from the rear section of the housing and telescopically received in bores in the end plate of the non-orbital scroll; an orbital scroll including an end plate and a spiral wrap, mounted in the front portion of the housing and cooperating with the non-orbital scroll to form at least one pair of fluid pockets; a scroll drive to drive the orbital scroll in an orbital path; an anti-rotation assembly to prevent rotation of the orbital scroll while permitting orbital movement; and an axial thrust load assembly including a baffle plate mounted in the rear section of the housing, a first pressure chamber flange integral with the baffle plate and extending forwardly toward the scrolls, a second pressure chamber flange integral with the baffle plate and extending forwardly toward the scrolls and surrounding the first pressure chamber flange, grooves in the end plate of the non-orbital scroll telescopically receiving the first pressure chamber flange and the second pressure chamber flange and a spring seal in each groove for sealing between the end plate of the non-orbital scroll and the forward edges of the first and second pressure chamber flanges operable to maintain sealing during limited movement of the non-orbital scroll axially within the compressor housing, a passage through the end plate of the non-orbital scroll between the first and second pressure chamber flanges, and wherein the first pressure chamber flange surrounds the outlet passage.

Claim 4

A scroll type compressor including a housing with a front section and a rear section; a fluid inlet in the housing; a fluid outlet in the housing; a non-orbital scroll including an end plate, a spiral wrap and an outlet passage through a central portion of the end plate, mounted in the rear section of the housing by a mounting assembly including a plurality of pins extending forwardly from the rear section of the housing and telescopically received in bores in the end plate of the non-orbital scroll; an orbital scroll including an end plate and a spiral wrap, mounted in the front portion of the housing and cooperating with the non-orbital scroll to form at least one pair of fluid pockets; a scroll drive to drive the orbital scroll in an orbital path; an anti-rotation assembly to prevent rotation of the orbital scroll while permitting orbital movement; and an axial thrust load assembly including a baffle plate mounted in the rear section of the housing, a first pressure chamber flange integral with the baffle plate and extending forwardly toward the scrolls, a second pressure chamber flange integral with the baffle plate and extending forwardly toward the scrolls and surrounding the first pressure chamber flange, grooves in the end plate of the non-orbital scroll telescopically receiving the first pressure chamber flange and the second pressure chamber flange and a spring seal in each groove for sealing between the end plate of the non-orbital scroll and the forward edges of the first and second pressure chamber flanges operable to maintain sealing during limited movement of the non-orbital scroll axially within the compressor housing, a passage through the end plate of the non-orbital scroll between the first and second pressure chamber flanges, and wherein the first pressure chamber flange surrounds the outlet passage.

Claim 5

A scroll type compressor including a housing with a front section and a rear section; a fluid inlet in the housing; a fluid outlet in the housing; a non-orbital scroll including an end plate, a spiral wrap and an outlet passage through a central portion of the end plate, mounted in the rear section of the housing by a mounting assembly including a plurality of pins extending forwardly from the rear section of the housing and telescopically received in bores in the end plate of the non-orbital scroll; an orbital scroll including an end plate and a spiral wrap, mounted in the front portion of the housing and cooperating with the non-orbital scroll to form at least one pair of fluid pockets; a thrust washer between the end plate of the orbital scroll and a rear surface of the front section of the housing to transmit axial loads on the orbital scroll to the housing; a scroll drive to drive the orbital scroll in an orbital path; an anti-rotation assembly to prevent rotation of the orbital scroll while permitting orbital movement; and an axial thrust load assembly including a baffle plate mounted in the rear section of the housing, a first pressure chamber flange integral with the baffle plate and extending forwardly toward the scrolls, a second pressure chamber flange integral with the baffle plate and extending forwardly toward the scrolls and surrounding the first pressure chamber flange, grooves in the end plate of the non-orbital scroll telescopically receiving the first pressure chamber flange and the second pressure chamber flange and a spring seal in each groove for sealing between the end plate of the non-orbital scroll and the forward edges of the first and second pressure chamber flange, operable to maintain sealing during limited movement of the non-orbital scroll axially within the compressor housing, a passage through the end plate of the non-orbital scroll between the first and second pressure chamber flanges, and wherein the first pressure chamber flange surrounds the outlet passage.

Claim 6

A scroll type compressor including a housing with a front section and a rear section; a fluid inlet in the housing; a fluid outlet in the housing; a non-orbital scroll including an end plate, a spiral wrap and an outlet passage through a central portion of the end plate, mounted in the rear section of the housing by a mounting assembly including a plurality of pins extending forwardly from the rear section of the housing and telescopically received in bores in the end plate of the non-orbital scroll; an orbital scroll including an end plate and a spiral wrap, mounted in the front portion of the housing and cooperating with the non-orbital scroll to form at least one pair of fluid pockets; a thrust washer between the end plate of the orbital scroll and a rear surface of the front section of the housing to transmit axial loads on the orbital scroll to the housing; a scroll drive to drive the orbital scroll in an orbital path; an anti-rotation assembly to prevent rotation of the orbital scroll while permitting orbital movement; and an axial thrust load assembly including a baffle plate mounted in the rear section of the housing, a first pressure chamber flange integral with the baffle plate and extending forwardly toward the scrolls, a second pressure chamber flange integral with the baffle plate and extending forwardly toward the scrolls and surrounding the first pressure chamber flange, grooves in the end plate of the non-orbital scroll telescopically receiving the first pressure chamber flange and the second pressure chamber flange and a spring seal in each groove for sealing between the end plate of the non-orbital scroll and the forward edges of the first and second pressure chamber flange, operable to maintain sealing during limited movement of the non-orbital scroll axially within the compressor housing, a passage through the end plate of the non-orbital scroll between the first and second pressure chamber flanges, and wherein the first pressure chamber flange surrounds the outlet passage.