US 11,754,072 B2 · Compressor having capacity modulation assembly

Abstract

A compressor may include first and second scrolls, and an axial biasing chamber. Spiral wraps of the scrolls mesh with each other and form compression pockets including a suction-pressure compression pocket, a discharge-pressure compression pocket, and intermediate-pressure compression pockets. The axial biasing chamber may be disposed axially between the second end plate and a component. Working fluid disposed within the axial biasing chamber may axially bias the second scroll toward the first scroll. The second end plate includes outer and inner ports. The outer port is disposed radially outward relative to the inner port. The outer port may be open to a first one of the intermediate-pressure compression pockets and in selective fluid communication with the axial biasing chamber. The inner port may be open to a second one of the intermediate-pressure compression pockets and in selective fluid communication with the axial biasing chamber.

Claims21

Dependent claims

A compressor comprising:

a first scroll including a first end plate and a first spiral wrap extending from the first end plate;
a second scroll including a second end plate and a second spiral wrap extending from the second end plate, the first and second spiral wraps meshing with each other and forming a plurality of compression pockets therebetween;
an axial biasing chamber disposed axially between the second end plate and a floating seal assembly, wherein the floating seal assembly at least partially defines the axial biasing chamber, wherein fluid within the axial biasing chamber biases the second scroll toward the first scroll;
and
a valve assembly in communication with the axial biasing chamber and movable between a first position providing fluid communication between a first pressure region and the axial biasing chamber and a second position providing fluid communication between a second pressure region and the axial biasing chamber,
wherein the second pressure region is at a higher pressure than the first pressure region.

3 more elements

A compressor comprising:

an orbiting scroll including a first end plate and a first spiral wrap extending from the first end plate;
a non-orbiting scroll including a second end plate and a second spiral wrap extending from the second end plate, the first and second spiral wraps meshing with each other and forming a plurality of compression pockets therebetween;
an axial biasing chamber disposed axially between the second end plate and a component, wherein the component at least partially defines the axial biasing chamber, wherein fluid within the axial biasing chamber biases the non-orbiting scroll toward the orbiting scroll;
and
a valve assembly in communication with the axial biasing chamber, wherein the valve assembly includes a valve member that is movable between a first position providing fluid communication between a first pressure region and the axial biasing chamber and a second position providing fluid communication between a second pressure region and the axial biasing chamber,
wherein the second pressure region is at a higher pressure than the first pressure region.

3 more elements

Dependencies are inferred from the claim text.

Compressor having capacity modulation assembly

Life of this patent

Compressor having capacity modulation assembly

Life of this patent

Abstract

Claims21