跳至主要内容

The lubrication method of the internal components of the screw chiller-oumalchiller.com

 Screw compressor chillers can be divided into air-cooled screw chillers and water-cooled screw chillers according to different heat dissipation methods. According to different temperatures, it can also be divided into low temperature screw chillers, and according to the protection method, there are explosion-proof screw chillers. Explosion-proof screw chillers are mainly used in the chemical industry. The core components-compressors of these screw chillers are screw-type series of well-known brands, such as: Taiwan Hanbell screw compressor, Germany Bitzer screw compressor, the lubrication effect is very good, and the service life is over 20 years.


Air cooled screw compressor chiller


When the compressor lubrication system of the screw chiller is better, it can reduce the friction force, friction heat and wear of parts of the compressor, better improve the mechanical efficiency of the compressor, and increase the reliability and working life of the compressor. The compressor lubrication method of the screw chiller is divided into oil lubrication and oil-free lubrication. At present, oil lubrication is still the main method, and the dripping or splashing method is adopted, and the splashing method is the most widely used in screw compressors. a form. In this lubrication method, the air and the compressor oil are in close contact, which can play a better role in the operation of the compressor of the chiller.


So, what is the lubrication method of the refrigeration compressor of the screw chiller?

1. Splash lubrication: This method is generally used for small open or semi-hermetic compressors. It uses the crankshaft or accessories set on the crankshaft to contact the oil surface when rotating, so that the lubricating oil splashes and the friction parts are lubricated.


2. Centrifugal oil supply and lubrication: This method is generally used in fully enclosed compressors with vertical crankshaft installations. It uses the centrifugal force of the crankshaft to tell the rotation to make the lubricating oil in the center of the crankshaft move along the shaft to two directions under the action of centrifugal force. Side and upper flow to lubricate the friction parts.


3. Mechanical oil pump oil supply and lubrication: This method is generally used for medium and large compressors. It uses mechanical oil pumps (commonly there are gear pumps, rotor pumps, crescent pumps, etc.) to pump and press lubricating oil to each friction area.


The lubricating oil (that is, refrigeration oil) used in the refrigeration compressor of the screw chiller can enhance the sealing effect after filling the gap with the cylinder and the friction surface of the shaft seal, and can take away the wear debris and improve the friction surface. Working conditions, ensure the normal operation of the compressor, and improve the working efficiency of the entire chiller.


标签：

评论

发表评论

此博客中的热门博文

Avoid Downtime, Cut Costs: Smart Maintenance for Smarter Chillers

  Screw water-cooled chillers   typically operate around 3,000 hours per year, depending on China's climate and geographical conditions. Regular and scientific maintenance is crucial to ensure long-term, reliable operation, extend the lifespan, and reduce operating costs. Maintenance and Upkeep Preventive maintenance during operation and inspection involves creating annual and monthly maintenance plans based on actual operating conditions. Shutdown Procedures In winter, clean and dry the unit. Open the drain valve to empty the  shell-and-tube heat exchanger  to avoid freezing. The shutdown sequence is: chiller off - cooling tower fan off - cooling water pump off - chilled water pump off. Special attention to anti-freezing: 1. Drain the evaporator and condenser if the unit is outdoors below 0°C during standby. 2. Interlock the water flow switch with the unit to prevent freezing when the chilled water flow switch malfunctions. 3. Ensure water in the evaporator is flowi...
发表评论
阅读全文

What Are the Key Requirements for Flooded-Type Heat Exchangers in Air Suspension Chillers

  Air suspension chillers   are crucial in many industrial and commercial applications, and the flooded-type heat exchanger is one of the most important components of these systems. Understanding the requirements of the heat exchanger is essential to ensuring the air suspension units operate efficiently and remain stable. A flooded-type heat exchanger works by transferring heat between two fluids with different temperatures. In air suspension chillers, it helps regulate temperature, optimize energy use, and improve overall performance. For instance, it can transfer heat from high-temperature gases to low-temperature liquids, or vice versa. 1. Material Requirements 1.1 Corrosion Resistance In many industrial environments, fluids can be corrosive. For example, they may come into contact with acidic or alkaline substances. To withstand these conditions, the heat exchanger’s tubes and casing need to be made from corrosion-resistant materials, such as stainless steel. Stainless ste...
发表评论
阅读全文

Hotels Go Green: Heat Recovery Chillers Cut Costs and Carbon Footprints

  In the operation of hotels, energy costs are a significant factor that cannot be overlooked. The advent of   heat recovery chillers   offers an efficient and energy-saving solution for hotels. ​ A heat recovery chiller, in simple terms, not only performs cooling tasks but also effectively recovers heat. For hotels, this is a highly practical feature. Traditional chillers only accomplish cooling, wasting the heat generated. However, heat recovery chillers are different; they can convert the otherwise wasted heat into usable hot water. In principle, during the cooling cycle of a chiller, the refrigerant releases heat. Heat recovery chillers use special devices to collect this heat, and through a series of heat exchange processes, they can produce hot water. This hot water can be used in various scenarios within the hotel. For example, it can supply water for guest rooms' washing and brushing, provide hot water for the hotel's restaurant kitchen, and even be used for heati...
发表评论
阅读全文