Scroll compressor having positioning means for axially movable non-orbiting scroll
First Claim
1. A scroll compressor having a closed vessel, a compression mechanism accommodated in the closed vessel and including a non-orbiting scroll and an orbiting scroll in engagement with each other, and a drive mechanism for driving the compression mechanism, wherein:
- said non-orbiting scroll comprises a frame portion and a non-orbiting end plate axially movable relative to said frame portion;
said frame portion has a first recess defined therein and a pin secured thereto;
said non-orbiting end plate has a cylindrical wall integrally formed therewith and loosely received in said first recess, thereby radially positioning said non-orbiting end plate relative to said frame portion;
said non-orbiting end plate has a second recess defined therein in which said pin is loosely received, thereby circumferentially positioning said non-orbiting end plate relative to said frame portion; and
said pin is itself hardened so as to have a Rockwell hardness of more than 35 on a scale C, and has a chemical compound layer deposited thereon.
1 Assignment
0 Petitions
Accused Products
Abstract
A scroll compressor has a closed vessel, a compression mechanism accommodated in the closed vessel and including a non-orbiting scroll and an orbiting scroll in engagement with each other, and an electric motor for driving the compression mechanism. The non-orbiting scroll includes a frame portion and a non-orbiting end plate axially movable relative to the frame portion. The frame portion has a recess defined therein and a pin secured thereto. The non-orbiting end plate has a cylindrical wall integrally formed therewith and loosely received in the recess, thereby radially positioning the non-orbiting end plate relative to the frame portion. The non-orbiting end plate also has a recess defined therein in which the pin is loosely received, thereby circumferentially positioning the non-orbiting end plate relative to the frame portion. The pin is hardened so as to have a Rockwell hardness of more than 35 on scale C and has a chemical compound layer deposited thereon, to thereby minimize wear thereof.
18 Citations
28 Claims
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1. A scroll compressor having a closed vessel, a compression mechanism accommodated in the closed vessel and including a non-orbiting scroll and an orbiting scroll in engagement with each other, and a drive mechanism for driving the compression mechanism, wherein:
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said non-orbiting scroll comprises a frame portion and a non-orbiting end plate axially movable relative to said frame portion; said frame portion has a first recess defined therein and a pin secured thereto; said non-orbiting end plate has a cylindrical wall integrally formed therewith and loosely received in said first recess, thereby radially positioning said non-orbiting end plate relative to said frame portion; said non-orbiting end plate has a second recess defined therein in which said pin is loosely received, thereby circumferentially positioning said non-orbiting end plate relative to said frame portion; and said pin is itself hardened so as to have a Rockwell hardness of more than 35 on a scale C, and has a chemical compound layer deposited thereon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A scroll compressor having a closed vessel, a compression mechanism accommodated in the closed vessel and including a non-orbiting scroll and an orbiting scroll in engagement with each other, and a drive mechanism for driving the compression mechanism, wherein:
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said non-orbiting scroll comprises a frame portion and a non-orbiting end plate axially movable relative to said frame portion; said frame portion has first and second recesses defined therein; said non-orbiting end plate has a cylindrical wall integrally formed therewith and loosely received in said first recess, thereby radially positioning said non-orbiting end plate relative to said frame portion; said non-orbiting end plate has a pin secured thereto which is loosely received in said second recess, thereby circumferentially positioning said non-orbiting end plate relative to said frame portion; and said pin is itself hardened so as to have a Rockwell hardness of more than 35 on scale C, and has a chemical compound layer deposited thereon. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification