Compressor with thermally-responsive injector
AssigneeEmerson Climate Technologies, Inc.
InventorRobert C. Stover
Life of this patent
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Abstract
A compressor includes a housing, a partition, a first scroll, a second scroll, and a valve assembly disposed within the second scroll. The valve assembly includes a valve housing, a valve body, and a first biasing member configured to displace the valve body from a first position to a second position relative to the valve housing. When in the first position, the valve body inhibits fluid communication between a fluid source and one of a series of compression pockets formed by the first and second scroll. When in the second position, the valve body allows fluid communication between the conduit and one or more of the series of compression pockets. The valve body is displaceable between the first and second positions in response to a change in operating temperature of the compressor.
Claims14
A compressor comprising:
- a housing;
- a partition disposed within the housing, the partition defining a suction chamber and a discharge chamber, and including a discharge passage in fluid communication with the discharge chamber;
- a first scroll supported within said housing and including a first endplate having a first spiral wrap extending therefrom;
- a second scroll supported within said housing and including a second endplate having a first side, a second side opposite the first side, and an injection passage, the first side having a second spiral wrap extending therefrom and meshingly engaged with said first spiral wrap to form a series of compression pockets, the injection passage being in fluid communication with at least one of said series of compression pockets;
- and
- an injection system including a conduit and a valve assembly, the conduit having a first end in fluid communication with a fluid source, and a second end in fluid communication with the injection passage, the valve assembly including a valve housing, a valve body, and a first biasing member configured to displace the valve body from a first position to a second position relative to the valve housing, said valve body inhibiting fluid communication between said conduit and one of said series of compression pockets when in said first position, and said valve body allowing fluid communication between said conduit and one of said series of compression pockets when in said second position, said valve body being displaceable between said first and second positions in response to a change in operating temperature of the compressor,
- wherein the valve housing includes a fluid inlet and a fluid outlet, and
- wherein the valve body has a valve head, a valve stem, and a guide, the valve stem extending axially between the valve head and the guide and fixedly coupling the valve head to the guide, the valve stem extending through the fluid outlet and the valve head is disposed on an opposite side of the fluid outlet from the guide.
A valve assembly comprising:
- a valve housing having a fluid inlet and a fluid outlet;
- a valve body having a valve head, a valve stem, and a valve guide, the valve stem extending axially between the valve head and valve guide and fixedly coupling the valve head to the valve guide, the valve guide being disposed within the valve housing and axially translatable between an open position and a closed position relative to the valve housing, wherein when the valve guide is in the open position the valve head allows fluid communication from the fluid inlet through the fluid outlet, wherein when the valve guide is in the closed position, the valve head inhibits fluid communication from the fluid inlet through the fluid outlet;
- a first spring disposed within the valve housing, the first spring engaging a first end of the valve housing and a first side of the valve guide, the first spring biasing the valve guide toward a second end of the valve housing and including a shape memory material configured to translate the valve guide from the closed position to the open position in response to a change in a state of the first spring;
- and
- a second spring disposed within the valve housing, the second spring engaging a second end of the valve housing and a second side of the valve guide, the second spring biasing the valve guide toward the first end of the valve housing,
- wherein the valve stem extends through the fluid outlet and the valve head is disposed on an opposite side of the fluid outlet from the valve guide.
Dependencies are inferred from the claim text.