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AssigneeBristol Compressors, Inc.
InventorsJohn K. Narney, II, David T. Monk, Joseph F. Loprete
Estimating the term…
A compressor with a capacity modulation system includes a compression chamber, a rotatable shaft within the compression chamber, and a roller mounted on the shaft in contact with a wall of the compression chamber. A suction channel is in fluid communication with the compression chamber for providing fluid at a suction pressure and a discharge channel is in fluid communication with the compression chamber for removing fluid at a discharge pressure. A re-expansion channel adjacent to the compression chamber has a first end forming a re-expansion port in the wall of the compression chamber. A re-expansion chamber is connected to the re-expansion channel. A valve disposed in the re-expansion channel is movable between a first position, in which the valve allows fluid communication between the compression chamber and the re-expansion chamber, and a second position, in which the valve prevents fluid communication between the compression chamber and re-expansion chamber.
A rotary compressor, comprising:
A rotary compressor, comprising:
A rotary compressor, comprising:
A rotary compressor, comprising:
A rotary compressor with a capacity modulation system, the compressor comprising:
A rotary compressor with a capacity modulation system, the compressor comprising:
A method of modulating the capacity of a rotary or swing link compressor including a compression chamber and a rotary compressing member in the compression chamber, the method comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Characterised by changing the positions of the inlet or outlet openings with respect to the working chamber: using lift valves
Rotary-piston, or oscillating-piston, positive-displacement machines for liquids
Term ended 14 Jun 2021 (estimated)
1. Field of the Invention
The present invention relates to a compressor with a capacity modulation system and, more particularly, to a rotary compressor with a capacity modulation system utilizing a re-expansion chamber.
2. Description of the Related Art
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate several embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings,
FIG. 1 is a sectional view of a compressor incorporating the capacity modulation system of the present invention.
FIG. 2 is a partial sectional view on line 2—2 of FIG. 1, showing one embodiment of the capacity modulation system of the present invention in a reduced capacity mode.
Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
The capacity modulation system 10 of the present invention will be described with reference to a rotary or swing-link compressor 12 of the type used in HVAC and refrigeration systems. It is understood, however, that the capacity modulation system could be effectively applied in compressors operating in other environments as well. As shown in FIG. 1, the compressor 12 includes a housing 14, a motor 16, and a rotary compressor unit 18. The motor 16 turns a shaft 20, which operates the compressor unit 18.
In operation, the compressor unit 18 draws fluid, such as refrigerant, into the housing 14 through an inlet 22 at suction pressure. In the compressor shown in FIG. 1, the inlet is proximate to the motor 16, and the refrigerant cools the motor 16 as it flows to the compressor unit 18. Alternatively, the inlet 22 can be positioned proximate to the compressor unit 18 in such a manner that the refrigerant does not flow past the motor 16, but instead is applied directly to the compressor unit 18.