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turbo refrigerator

A turbo refrigerator and turbo compressor technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of lower oil temperature, lack of oil recovery, inability to ensure oil pressure and oil volume, etc. The effect of preventing oil temperature drop and preventing oil foaming

Active Publication Date: 2018-02-13
EBARA REFRIGERATION EQUIP & SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (1) Due to the recovery of a two-phase liquid with a high refrigerant ratio, a sufficient amount of oil recovery cannot be obtained
[0009] (2) Since the low-temperature (approximately 6°C in general air conditioner) refrigerant liquid is mixed into the oil cylinder, the temperature of the oil in the oil cylinder is lowered, and the viscosity of the oil required to supply oil to the rotating body cannot be ensured.
[0010] (3) For the same reason as (2) above, foaming (foaming) occurs in the cylinder and the oil pressure and oil volume for oil supply cannot be ensured

Method used

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Embodiment Construction

[0021] Below, refer to Figure 1 ~ Figure 3 Embodiments of the turbo refrigerator of the present invention will be described. exist Figure 1 ~ Figure 3 In , the same reference numerals are attached to the same or corresponding constituent elements, and overlapping descriptions are omitted.

[0022] figure 1 It is a schematic diagram showing an embodiment of the turbo refrigerator of the present invention. like figure 1 As shown, the turbo refrigeration mechanism is equipped with: a turbo compressor 1 for compressing refrigerant, a condenser 2 for cooling the compressed refrigerant gas with cooling water (cooling fluid) and condensing it, and cooling water (fluid to be cooled) The evaporator 3 that captures heat and evaporates the refrigerant to exert a cooling effect, and the economizer 4 that is an intercooler arranged between the condenser 2 and the evaporator 3, and the turbo refrigerator passes through the refrigerant piping that circulates the refrigerant 5 to conne...

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Abstract

The invention provides a turbine refrigerator which can recycle a refrigerant containing a large amount of oil and can prevent the temperature of oil to decrease and the oil from bubbling. The turbine refrigerator is provided with oil recycling ports (L1-L3) located at parts, at different heights, of an evaporator. The turbine refrigerator is also provided with a discharging unit (20) which absorbs the refrigerant, staying in the evaporator (3) and containing oil, through one of the oil recycling ports (L1-L3) and enables the refrigerant to return to an oil cylinder (160 of a turbine compressor (1). The turbine refrigerator is also provided with open and close valves (V1-V3) which are disposed in oil recycling loops (P1-P3), a level sensor which is used for detecting the level of the refrigerant in the evaporator (3), and a control part which operates the open and close valves (V1-V3) so as to enable one oil recycling port exactly under the level of the refrigerant to be communicated with the discharging unit (20).

Description

technical field [0001] The present invention relates to a turbo refrigerator, and more particularly, to a turbo refrigerator in which oil-containing refrigerant remaining in an evaporator is recovered to an oil cylinder by an ejector that uses exhaust gas from a compressor as driving gas. Background technique [0002] Conventionally, turbo refrigerators used in refrigerating and air-conditioning equipment and the like are constituted by a closed system in which a refrigerant is sealed, and are configured as an evaporator that absorbs heat from cold water (fluid to be cooled) to evaporate the refrigerant to exert a cooling effect, A compressor that compresses the refrigerant gas evaporated by the evaporator to become a high-pressure refrigerant gas, a condenser that cools the high-pressure refrigerant gas with cooling water (cooling fluid) to condense it, and The expansion valve (expansion mechanism) that depressurizes the refrigerant and expands it is connected through refri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B1/10F25B49/02
CPCF25B2341/0016
Inventor 远藤哲也天野俊辅大塚晃一郎
Owner EBARA REFRIGERATION EQUIP & SYST CO LTD