Carrier Corporation

Scott A Nieforth

Vishnu Mohan Sishtla

Kai Deng

Michael A Stark

Haiping Ding

Yuling Shi

HongYi Li

Zhanbo Du

Biao Shu

Xili Liu

Danni Yuan

Michael Bergin

An illustrative example embodiment of a compressor assembly includes a compressor housing having a suction inlet and a discharge outlet. A flow restricting valve allows unrestricted fluid flow in a first direction into the housing through the suction inlet and out of the discharge outlet during a first operating condition. The flow restricting valve allows a restricted fluid flow in a second, opposite direction into the housing through the discharge outlet in a second operating condition.

Compressor assembly including a flow-restricting valve

A deflector for a condenser. The condenser has an inlet in communication with a compressor, and a deflector for guiding a refrigerant gas flow from the compressor is arranged in the condenser and at a position close to the inlet. The deflector is provided with a deflecting structure projecting toward the inlet, and the deflecting structure is configured as impermeable to the refrigerant gas flow.

Guiding panel for condenser, condenser and refrigeration system

A shield for controlling the cooling within a hermetically cooled motor, and a compressor incorporating the shield are provided. The shield includes an insulator, at least one fastener, and a venting aperture. The insulator restricts the flow of a working fluid between a first side and a second side. The at least one fastener secures the insulator. The venting aperture controls a pressure differential between the first side and the second side. The venting aperture may include at least one hole through the insulator. The venting aperture may be provided as a hole through the insulator for the rotating shaft of the compressor.

Magnetic bearing cooling management

A method of operating a heat exchanger system in which a compressor, which is drivable by a motor, is fluidly interposed between an evaporator and a condenser following receipt of a shutdown command is provided. The method includes positioning inlet guide vanes (IGVs) of the compressor in a first position in the event of at least one of a first precondition being in effect and the first and a second precondition both not being in effect. The method further includes positioning the IGVs in a second position in an event the first precondition is not in effect but the second precondition is in effect, ramping a speed of the compressor down until a third precondition takes effect, removing power from the motor and positioning the IGVs in the first position once power is removed from the motor.

Reverse rotation prevention in centrifugal compressor

A lubrication additive recovery system is provided for use with a vapor compression system. The vapor compression system includes a compressor having a bearing, a condenser and an evaporator. The lubrication additive recovery system includes a lubrication ring formed to define first and second through-holes, a first system by which a portion of a required supply of lubrication is drawn from the condenser and provided to the bearing through the first through-holes and a second system by which a remainder of the required supply of lubrication is recovered from the evaporator and provided along with compressor discharge gas to the bearing through the second through-holes.

Lubrication supply system

A vapor compression system () comprises: a compressor () having a suction port () and a discharge port (); a heat rejection heat exchanger () coupled to the discharge port to receive compressed refrigerant; a heat absorption heat exchanger (); a first lubricant flowpath () from the heat rejection heat exchanger to the compressor; a second lubricant flowpath () from the heat absorption heat exchanger to the compressor; at least one lubricant pump (); and a controller () configured to control lubricant flow along the first lubricant flowpath and the second lubricant flowpath based on a sensed fluctuation.

Vapor compression system with refrigerant-lubricated compressor

The present utility model relates to a deflector for a condenser. The condenser has an inlet in communication with a compressor, and a deflector for guiding a refrigerant gas flow from the compressor is arranged in the condenser and at a position close to the inlet. The deflector is provided with a deflecting structure projecting toward the inlet, and the deflecting structure is configured as impermeable to the refrigerant gas flow. The present utility model further provides a condenser having the deflector for a condenser and a refrigeration system equipped with the condenser. The deflector for a condenser according to the present utility model not only can alleviate the impact of high-temperature high-pressure gas from the compressor but also can reduce noise and vibration.

A vapor compression system comprises a compressor (). The compressor comprises an inlet () and an outlet () and an electric motor (). The motor has a stator () and a rotor (). A plurality of bearings () support the rotor. A fluid flowpath () extends to the plurality of bearings. A branch () from the fluid flowpath extends to the compressor. A liquid sensor () is along the branch.

Liquid sensing for refrigerant-lubricated bearings

A vapor compression system () has: a compressor () having a suction port () and a discharge port (); a heat rejection heat exchanger () coupled to the discharge port to receive compressed refrigerant; a heat absorption heat exchanger (); a first lubricant flowpath () from the heat rejection heat exchanger to the compressor; a second lubricant flowpath () from the heat absorption heat exchanger to the compressor; at least one lubricant pump (); at least one liquid level sensor (); and a controller () configured to control lubricant flow along the first lubricant flowpath and the second lubricant flowpath based on output of the at least one liquid level sensor.

A diffuser for a centrifugal compressor and a centrifugal compressor having the same. The diffuser () comprises a drive component (), a transmission assembly (), an adjustment assembly (), a spool valve assembly () and a rear wall (); wherein the transmission assembly is used for transmitting power produced by the drive component to the adjustment assembly, the adjustment assembly is capable of circumferentially reciprocating with respect to the rear wall and driving the spool valve assembly to reciprocate axially; and wherein a rolling element () is provided between the adjustment assembly and the rear wall. Intervention of a mechanism for adjusting a flow passage width is better achieved by such an arrangement in combination with an existing configuration of the diffuser; and a low-friction fit between the adjustment assembly and the rear wall is achieved by the rolling element.

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Clay, NY, United States of America

Scott A Nieforth