A scroll compressor operating in reverse is known as a scroll expander, and can be used to generate mechanical work from the expansion of a fluid, compressed air or gas. Many residential central heat pump and air conditioning systems and a few automotive air conditioning systems employ a scroll compressor instead of the more traditional rotary, reciprocating, and wobble-plate compressors.
Scroll compressors tend to be very compact and smooth running and so do not require spring suspension. This allows them to have very small shell enclosures which reduces overall cost .

Shaanxi Kaishan Mechanical & Electrical Equipment Co., Ltd. is located in a beautiful ancient City - Xi'an. Since founded more than 10 years ago, our company has accumulated much experience in the business of air compressors and drilling rig machines. we are the sole agency in northwest district of China for Kaishan group.
Kaishan group is a state-level large scale enterprise in China, which has been listed among the five industries of Zhejiang Provincial government, the 958 Technology Catching-up Plan and the key enterprises by Zhejiang provincial government. The group is the civilized enterprise of provincial level and contract abiding and trustworthy enterprise of state level.
By far, Kaishan group is the largest rock drill manufacturer in the world, and the largest air compressor manufacturer in China. Exports are shipped to over 20 different nations and regions such as United States, Germany, Japan, South Korea, Russia, African and Latin American countries.
Please contact me by dialling me or sending e-mail to me if you are intersested in our products, and we will provide you products with high quality, competitive price and excellent after-sale services.