Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
226 words
A scroll type compressor including a housing having a fluid inlet port and a fluid outlet port, a fixed scroll joined with said housing and having a first end plate from which a first wrap extends into the interior of said housing, an orbiting scroll having a second end plate from which a second wrap extends, said first and second wraps interfitting at an angular and radial offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets and a central fluid pocket, a driving mechanism operatively connected to said orbiting scroll to effect the orbital motion of said orbiting scroll, and a rotation preventing means for preventing the rotation of said orbiting scroll so that the volume of the fluid pockets changes during the orbital motion of said scroll, characterised in that the inner end portion of each of said wraps having a bulbous shaped enlarged portion, a valve chamber is formed on one of said enlarged portions, a discharge hole is formed through the inner side wall of said one enlarged portion at a position near the center of the generating circle of said orbiting scroll to connect the central fluid pocket and said valve chamber, and a valve member is disposed within said valve chamber to control the opening and closing of said discharge hole.
Claim 2
Dependent Claim
226 words
A scroll type compressor including a housing having a fluid inlet port and a fluid outlet port, a fixed scroll joined with said housing and having a first end plate from which a first wrap extends into the interior of said housing, an orbiting scroll having a second end plate from which a second wrap extends, said first and second wraps interfitting at an angular and radial offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets and a central fluid pocket, a driving mechanism operatively connected to said orbiting scroll to effect the orbital motion of said orbiting scroll, and a rotation preventing means for preventing the rotation of said orbiting scroll so that the volume of the fluid pockets changes during the orbital motion of said scroll, characterised in that the inner end portion of each of said wraps having a bulbous shaped enlarged portion, a valve chamber is formed on one of said enlarged portions, a discharge hole is formed through the inner side wall of said one enlarged portion at a position near the center of the generating circle of said orbiting scroll to connect the central fluid pocket and said valve chamber, and a valve member is disposed within said valve chamber to control the opening and closing of said discharge hole.
Claim 3
Dependent Claim
49 words
A scroll type compressor as claimed in claim 1, wherein said fixed scroll is fixed within the interior of said housing and said first end plate partitions the interior of said housing into a discharge chamber and a suction chamber, said valve chamber being connected to said discharge chamber.
Claim 4
Dependent Claim
21 words
A scroll type compressor as claimed in claim 1 or 2, wherein said valve chamber is formed on said first wrap.
Claim 5
Dependent Claim
37 words
A scroll type compressor as claimed in claim 1, wherein said valve member includes an annular shaped valve plate which has a reed valve and a valve retainer disposed within the inner side of said valve plate.
Claim 6
Dependent Claim
74 words
A scroll type compressor as claimed in claim 4, wherein the axial end of said valve chamber facing said second end plate is closed and the other axial end is opened on said first end plate, said valve member being disposed between the inner axial end surface of said valve chamber and a stopper plate fixed on the end surface of said first end plate to limit the axial movement of said valve plate.
Claim 7
Dependent Claim
96 words
A scroll type compressor as claimed in claim 4, wherein the axial end of said valve chamber facing said second end plate is opened and the other axial end is closed by said first end plate, said scroll type compressor further comprising a connecting hole formed through said first end plate for connecting said valve chamber and said discharge chamber, said valve member being disposed between the end surface of said first end plate and a snap ring disposed on the inner surface of said valve chamber to limit the axial movement of said valve member.
Claim 8
Dependent Claim
17 words
A scroll type compressor as claimed in claim 1, wherein said discharge hole has a circular shape.
Claim 9
Dependent Claim
17 words
A scroll type compressor as claimed in claim 1, wherein said discharge hole has an oval shape.