4 results about "Centrifugal chiller" patented technology

This application relates to a chiller unit, comprising: a refrigeration circuit, an electric oil supply circuit, and a pneumatic oil supply circuit, wherein the pneumatic oil supply circuit and the electric oil supply circuit are connected in parallel. This application sets the electric and pneumatic oil supply circuits to work together. Under normal conditions, the electric oil supply circuit can stably provide lubricating oil to the compressor, ensuring the lubrication needs during normal operation of the unit. When the electric oil supply circuit malfunctions due to sudden power outages, oil pump failures, or other situations, the control element switches to a second state, using the high-pressure gaseous refrigerant in the condenser to drive the pneumatic oil pump through the pneumatic drive pipeline to continuously deliver lubricating oil to the compressor. This design effectively solves the problem of lubricating oil circulation interruption in conventional centrifugal chiller units under emergency conditions, avoids abnormal mechanical wear of the compressor bearings caused by dry friction due to lack of oil, provides reliable protection for the bearings and core components of the compressor, helps the unit operate safely and stably, and significantly extends the unit's service life.

This invention discloses a multi-media synergistic heat dissipation integrated chiller, relating to the field of chiller unit technology. It includes a magnetic levitation centrifugal chiller unit, comprising a condenser, a throttling valve, an evaporator, and a compressor. The condenser, throttling valve, evaporator, and compressor are sequentially connected in a ring to form a refrigerant flow path. A tank serves as the shell of the condenser to isolate it from the external environment. This invention uses a vortex assembly to drive the gaseous refrigerant inside the tank to form a vortex. In this vortex state, the outer gas layer experiences a temperature increase due to a large velocity gradient and intense friction, while the inner gas layer maintains a low temperature after expansion and cooling. Heat is concentrated in the area near the inner wall of the tank, effectively improving the efficiency of heat transfer outwards and creating conditions for subsequent efficient heat dissipation.

This utility model relates to a marine air-suspension variable frequency centrifugal chiller unit. The exhaust port of the dynamic pressure air-suspension centrifugal compressor is connected to a condenser. The condenser outputs two separate lines: one line connects via an electronic expansion valve to the inlet of the motor cooling system of the dynamic pressure air-suspension centrifugal compressor, and the outlet of the motor cooling system connects to the return air port of the dynamic pressure air-suspension centrifugal compressor; the other line splits into two separate inlets, one for a plate heat exchanger and the other for a gas supply. The outlet of the other gas supply line connects via a pressure sensor and a temperature sensor to the gas supply port of the dynamic pressure air-suspension centrifugal compressor. The outlet of the first gas supply line connects via an electronic expansion valve to the first thermal stage of a dry evaporator, and then via a gas-liquid separator to the return air port of the dynamic pressure air-suspension centrifugal compressor. Its structure is simple, capable of adapting to complex load changes on ships, and can provide integrated real-time cooling for the compressor motor, ensuring stable and safe compression and cooling under complex load variations.

This invention relates to the field of refrigeration technology and discloses an energy-saving magnetic levitation centrifugal chiller unit, including an evaporator, a condenser mounted on the back of the evaporator, a centrifugal compressor assembly on the top of the evaporator, and a flash evaporator mounted on the top of the condenser; the centrifugal compressor assembly includes a centrifugal compressor body. By setting up a maintenance worm gear, maintenance worm, connecting plate, and connecting pipe, rotating the maintenance worm gear drives the maintenance worm gear, connecting plate, connecting pipe, and the entire centrifugal compressor body to rotate synchronously, realizing the switching of the centrifugal compressor body from a vertical position at the top of the condenser to a horizontal position on the side. This effectively reduces the maintenance height of the centrifugal compressor body, allowing maintenance personnel to closely access and perform maintenance operations on core components without the need for lifting equipment such as hand-operated hoists. This not only simplifies the maintenance process and saves maintenance time but also completely avoids the safety risks associated with lifting operations.