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US 11,703,053 B2Granted
Scroll compressor
AssigneeLG Electronics Inc.
InventorsJuhwan Yun, Nara Han, Mose Kang, Jihoon Park
Life of this patent
Estimating the term…
Abstract
A scroll compressor is provided that may include a casing, a drive motor, an orbiting scroll, a non-orbiting scroll, and a floating plate provided with a cover portion to cover an area between an outer wall portion and an inner wall portion of the non-orbiting scroll so as to form a back pressure chamber with the non-orbiting scroll, and a valve accommodating portion that extends from the cover portion so as to accommodate a discharge valve configured to open and close a discharge port. Accordingly, structure for forming a back pressure chamber is simplified to thereby reduce the number of components and man-hours required for assembly.
Claims23
A scroll compressor, comprising:
- a casing having a sealed inner space;
- a drive motor installed in the inner space of the casing;
- an orbiting scroll coupled to the drive motor to perform an orbiting motion;
- a non-orbiting scroll including an end plate provided at a first side of the orbiting scroll and having a first surface defining a compression chamber by being engaged with the orbiting scroll and a second surface having an outer wall portion and an inner wall portion that extend in an axial direction with a predetermined gap therebetween in a radial direction, the inner wall portion provided therein with a discharge port configured to discharge refrigerant compressed in the compression chamber into the inner space of the casing;
- and
- a floating plate configured to cover an area between the outer wall portion and the inner wall portion of the non-orbiting scroll so as to form a back pressure chamber with the non-orbiting scroll, wherein the floating plate comprises:
- an upper cover portion having an annular shape to form an upper surface of the back pressure chamber;
- an outer cover portion that extends from an outer circumference of the upper cover portion toward the non-orbiting scroll in the axial direction so as to be slidably fitted to the outer wall portion;
- an inner cover member that extends from an inner circumference of the upper cover portion toward the non-orbiting scroll in the axial direction so as to be slidably fitted to the inner wall portion;
- and
- a valve accommodating portion that axially extends from an inner circumferential side of the inner cover portion so as to accommodate a discharge valve configured to open and close the discharge port, wherein at least one discharge through hole is defined between an outer circumferential surface of the valve accommodating portion and an inner circumferential surface of the inner cover portion, so as to provide communication between the discharge port and the inner space of the casing, and wherein at least one connection portion is defined between the outer circumferential surface of the valve accommodating portion and the inner circumferential surface of the inner cover portion, so as to provide communication between the valve accommodating portion and the inner cover portion.
8 more elements
A scroll compressor, comprising:
- a casing having a sealed inner space;
- a drive motor installed in the inner space of the casing;
- an orbiting scroll coupled to the drive motor to perform an orbiting motion;
- a non-orbiting scroll including an end plate provided at a first side of the orbiting scroll and having a first surface defining a compression chamber by being engaged with the orbiting scroll and a second surface having an outer wall portion and an inner wall portion that extend in an axial direction with a predetermined gap therebetween in a radial direction, the inner wall portion provided therein with a discharge port configured to discharge refrigerant compressed in the compression chamber into the inner space of the casing;
- and
- a floating plate configured to cover an area between the outer wall portion and the inner wall portion of the non-orbiting scroll so as to form a back pressure chamber with the non-orbiting scroll, wherein the floating plate comprises:
- an upper cover portion having an annular shape to form an upper surface of the back pressure chamber;
- an outer cover portion that extends from an outer circumference of the upper cover portion toward the non-orbiting scroll in the axial direction so as to be slidably fitted to the outer wall portion;
- an inner cover member that provides a seal between a circumferential surface of the inner cover portion and a circumferential surface of the inner wall portion facing each other;
- an outer cover member that provides a seal between a circumferential surface of the outer cover portion and a circumferential surface of the outer wall portion facing each other;
- and
- a valve accommodating portion that axially extends from an inner circumferential side of the inner cover portion so as to accommodate a discharge valve configured to open and close the discharge port, wherein a lower end of the valve accommodating portion is spaced apart from the second surface of the end plate of the non-orbiting scroll.
9 more elements
A scroll compressor, comprising:
- a casing having a sealed inner space;
- a drive motor installed in the inner space of the casing;
- an orbiting scroll coupled to the drive motor to perform an orbiting motion;
- a non-orbiting scroll including an end plate provided at a first side of the orbiting scroll and having a first surface defining a compression chamber by being engaged with the orbiting scroll and a second surface having an outer wall portion and an inner wall portion that extend in an axial direction with a predetermined gap therebetween in a radial direction, the inner wall portion of the non-orbiting scroll provided therein with a discharge port configured to discharge refrigerant compressed in the compression chamber into the inner space of the casing;
- and
- a floating plate configured to cover an area between the outer wall portion of the non-orbiting scroll and the inner wall portion of the non-orbiting scroll so as to form a back pressure chamber with the non-orbiting scroll, wherein the floating plate comprises:
- an upper cover portion having an annular shape to form an upper surface of the back pressure chamber;
- an outer cover portion that extends from an outer circumference of the upper cover portion toward the non-orbiting scroll in the axial direction so as to be slidably fitted to the outer wall portion;
- a first elastic sealing provided between a circumferential surface of the inner cover portion and a circumferential surface of the inner wall portion facing each other;
- a second elastic sealing provided between a circumferential surface of the outer cover portion and a circumferential surface of the outer wall portion facing each other;
- and
- a valve accommodating portion that axially extends from an inner circumferential side of the inner cover portion so as to accommodate a discharge valve configured to open and close the discharge port, wherein the end plate of the non-orbiting scroll is provided with at least one bypass hole to allow the compression chamber and the inner space of the casing to communicate with each other, wherein the at least one bypass hole is defined between the discharge port and the inner wall portion in the radial direction, and wherein the second surface of the end plate of the non-orbiting scroll is provided with a bypass valve to open and close the at least one bypass hole.
9 more elements
Dependencies are inferred from the claim text.