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Lubricant still and reservoir for refrigeration system

A lubricant and refrigerant technology, applied in evaporators heated by serpentine tubes, lubricating compositions, cascade evaporators, etc., can solve problems such as high lubricant viscosity and system efficiency impact

Inactive Publication Date: 2006-03-29
CARRIER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, simply increasing the heat supplied to vaporize the refrigerant may result in a slightly higher lubricant viscosity, but may also result in a severe impact on system efficiency since the additional heat supplied must be taken into account when calculating system efficiency
Moreover, conventional stills have disadvantages in producing sufficient lubricant viscosity during transient operations that lead to a sudden increase in the inflow of oil-containing refrigerant from the evaporator

Method used

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  • Lubricant still and reservoir for refrigeration system
  • Lubricant still and reservoir for refrigeration system
  • Lubricant still and reservoir for refrigeration system

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Embodiment Construction

[0020] Describe in detail below with reference to accompanying drawing according to the present invention, figure 1 A refrigeration system 1 is shown, comprising a compressor 2 .

[0021] It is known that the flooded evaporator 3 feeds the predominantly gaseous refrigerant to the compressor 2 via a line 4 . The gaseous refrigerant is compressed by the compressor 2 , and the refrigerant entrains lubricant during its flow through the compressor 2 , so as to lubricate the bearings and rotors of the compressor 2 . From compressor 2 , the oil-entrained refrigerant flows through line 5 to condenser 6 . The compressed gaseous refrigerant is cooled in the condenser and turns into a liquid phase, with oil in a mixture or mutual solution, while it flows in line 11 through an expansion valve (not shown) to the evaporator 3 . At the evaporator 3 , the environment to be cooled is cooled by means of the refrigerant in the evaporator. Typically liquid refrigerant 7 collects in the evapora...

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PUM

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Abstract

A lubricant distiller still for use in a compressor for separating oil from refrigerant, includes a vessel having an inlet for incoming oil laden refrigerant, an outlet for gaseous refrigerant, and an outlet for refrigerant laden oil. A separating structure is provided for separating transitioning oil laden refrigerant from the incoming oil-laden refrigerant, wherein the oil laden refrigerant progressively changes to the refrigerant laden oil closer to the outlet for refrigerant laden oil. A heating device is used for heating the incoming oil laden refrigerant and transitioning oil laden refrigerant, for facilitating the formation of the gaseous refrigerant and the refrigerant laden oil.

Description

technical field [0001] This invention relates to the separation of lubricant from refrigerant in compressors, and more particularly to the separation of lubricant from refrigerant in lubricant stills. Background technique [0002] Screw or helical compressors are commonly used in air conditioning applications to compress refrigerant as part of the refrigeration cycle. Screw compressors consist of intermeshing screws or helical rotors. Although a two-rotor configuration is the most common design, screw compressors having three or more rotors are also known in the prior art, in which the rotors are housed in correspondingly overlapping cylinder bores so as to cooperate with each other in pairs. The rotors of a typical screw compressor are mounted at each end on bearings located in the housing end plates on the inlet and discharge sides. The refrigerant is compressed by the screw rotor toward the discharge side and discharged through the port and enters the discharge pipe. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/00C10M175/00B01D1/26B01D1/02F28D3/00
CPCB01D1/0088B01D1/0017B01D1/26F28D3/00B01D1/02
Inventor S·L·索尔德斯
Owner CARRIER CORP