Danfoss (tianjin) Ltd.

Leping Zhang

Liang Fan

Serdar Suindykov

Jingyuan Li

Yingke Sun

Kongkham Lovan

Pierre Ginies

Patrice Bonnefoi

Dongdong Wang

Philippe Dewitte

Hongling Xu

Provided is a monitoring apparatus used to monitor lubricating oil inside a compressor. The monitoring apparatus comprises a first capacitance detector (), a calculation unit, and a determining unit. The first capacitance detector () is disposed in a compressor () and is completely immersed in lubricating oil () inside the compressor (), and is used to detect a first capacitance value (Cn). The calculation unit calculates a relative dielectric constant of the lubricating oil inside the compressor according to the first capacitance value (Cn) detected by the first capacitance detector (). The determining unit monitors, according to the calculated relative dielectric constant, whether quality of the lubricating oil () inside the compressor () encounters an exception. Further provided are a method for monitoring quality of lubricating oil inside a compressor and an apparatus and a method for monitoring a fluid level of lubricating oil inside a compressor. The monitoring apparatus and method may accurately monitors quality and a fluid level of lubricating oil inside a compressor, thereby reducing a monitoring cost and improving monitoring accuracy.

Apparatus and method for monitoring the quality of a lubricant in a compressor

An oil-gas balancing apparatus includes: a body, a gas balancing opening and at least one oil balancing hole. The body has a first end and a second end opposite to the first end, and the first end can be fixedly connected to a shell of a compressor and in communication with an oil sump of the compressor and a chamber of the oil sump. The gas balancing opening is disposed on a first portion of an end surface of the second end. The at least one oil balancing hole is disposed on a second portion of the end surface of the second end. The second portion and the first portion are oppositely disposed. A compressor system can include the oil-gas balancing apparatus.

Oil-gas balancing apparatus and compressor system with the same

An oil balancing apparatus is for use with a first compressor and at least two second compressors. Suction pipes of the first compressor and the second compressors are connected in parallel to a suction main pipe and discharge pipes of the first compressor and the second compressors are connected in parallel to a discharge main pipe. The first compressor is in an operating state, and the second compressors are operated intermittently. The oil balancing apparatus includes a first oil balancing pipe connecting oil sumps of the second compressors in series, and a second oil balancing pipe connecting an oil sump of the first compressor to a bottom of the first oil balancing pipe. A refrigeration system is also disclosed.

Oil balancing apparatus and refrigeration system with oil balancing apparatus

Embodiments of the present invention provides an oil balancing apparatus, applied to at least three compressors connected in parallel. The oil balancing apparatus includes a first oil balancing pipe and a second oil balancing pipe. The first oil balancing pipe connects oil sumps of all the compressors, and the second oil balancing pipe only connects oil sumps of oil-rich compressors but not an oil sump of an oil-starved compressor.

Oil balancing apparatus and refrigeration device

Growing community of inventors

Tianjin, China

Leping Zhang