CN2305627Y

CN2305627Y - Device for separating oil from refrigerator

Info

Publication number: CN2305627Y
Application number: CN 97236677
Authority: CN
Inventors: 程学来
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-24
Filing date: 1997-07-24
Publication date: 1999-01-27
Anticipated expiration: 2007-07-24

Abstract

The utility model relates to a device for separating oil from a refrigerator. The utility model comprises a casing which can close off space; a wall of the casing is provided with an oleaginous refrigerant vapour inlet; an upper bottom wall of the casing is provided with a pure refrigerant vapour inlet; the upper bottom wall of the casing is provided with an oil liquid outlet; a valve core at the oil liquid outlet is connected with a float in the casing; an oil blocking filter screen which can filter out oil microparticles in the oleaginous refrigerant vapour is arranged in a passage between the oleaginous refrigerant vapour outlet and the pure refrigerant vapour outlet in the casing; a guide mechanism which can make the float move from top to bottom is arranged in the casing. The problem of the oil blockage of the refrigerator is solved, and refrigerant vapour can not leak from the oil liquid outlet; the utility model has the advantages of simple structure, easy fabrication and low cost.

Description

The device of separating oil from refrigerating plant

The utility model relate to a kind of from refrigerating plant the device of separating oil, particularly will remove, and this oil will be sent back to device in the low pressure oil sump in the compressor crankcase from the oil the vaporization high-pressure refrigerant of refrigeration compressor discharging.

In the prior art, oil in the refrigeration system is used for lubricate compressors, but part oil is mixed overheated gas by the compressor boil down to simultaneously with refrigerant, left lubricating component, enter systemic circulation such as condenser, capillary, evaporimeter and form thermal resistance, oil film is attached to the inwall of pipeline, forms the resistance absciss layer, leads refrigeration condenser, evaporimeter heat exchange weak effect; If oil enters throttling arrangement, form the fluid throttling, system does not freeze; When temperature reduced, oil film thickness increased, and the inner-walls of duct effective area narrows down, and reduced disengagement area, reduced refrigerating capacity.When evaporimeter admission end and steam output end had potential difference, oil return was more difficult, and these oil are built up and also can be caused system not freeze in evaporimeter.King Company is to " oil eliminator that refrigerating plant is used " of Patent Office of the People's Republic of China's application by U.S. plug plum, application number is 911010866, comprise the casing that can seal a space, enclosure wall is provided with the import of oil-containing refrigerant gas first, another then is provided with pure refrigerant gas outlet enclosure wall, the casing diapire is provided with the outlet of capillary fluid, is furnished with filter between gas import of casing oil-containing refrigerant and the outlet of pure refrigerant gas.Oil-containing refrigerant gas enters casing, leaches fluid through filter, and pure refrigerant gas is from the outlet pass-out, and the oil that leaches drops to the bottom in the gravity effect, under action of pressure, flows out from capillary.The problem that exists is: in heat transfer process, and intrasystem condition of work such as delivery temperature, pressure etc. are all changing, oil mass in the mist that compressor is discharged, quantity is also changing, and can't accurately design the oily quantitative value of stream capillaceous, thereby the inside and outside pressure reduction of capillary outlet can't be adjusted.And the outlet of capillary fluid does not have valve body, is opening state when the outlet of capillary fluid does not have oil yet, and oil-containing refrigerant gas will directly flow out from the outlet of capillary fluid, forms another throttling refrigeration branch road of refrigerant gas, and is uncontrollable.And use this oil eliminator resistance big, increased the load and the energy consumption of compressor.Moreover, the complex structure of this separator, assembly is many, and the manufacturing process difficulty is big, can only hand assembled, can't batch machining, and cost is also high.

The purpose of this utility model is at the deficiencies in the prior art, proposes a kind ofly can solve the stifled problem of refrigeration plant oil, establishes the float spool in the fluid exit, not the device of separating oil from refrigerating plant of leakage of coolant.

Task of the present utility model is to realize like this, the utility model be a kind of from refrigerating plant the device of separating oil, comprise the casing that can seal a space, enclosure wall is provided with the import of oil-containing refrigerant gas, diapire is provided with pure refrigerant gas outlet on the casing, diapire is provided with the fluid outlet under the casing, the spool that is characterized in the fluid exit is connected with float in the casing, float is to drive the buoyancy aid that spool floats in fluid, is furnished with the oil resistance filter screen that can leach oily particulate in the oil-containing refrigerant gas in the passage between oil-containing refrigerant gas import in the casing and the outlet of pure refrigerant gas.Like this, oil-containing refrigerant gas enters casing, go out fluid through the oil resistance strainer filtering, pure refrigerant gas enters systemic circulation from the outlet pass-out, and the oil that leaches drops to the bottom in the gravity effect, when the casing inner fluid gathers when float floated, float drives on the spool and moves, the fluid outlet is opened, and fluid feeds the low-pressure reservoir from the fluid outlet under the pressure differential effect; When the casing inner fluid was reduced to the float whereabouts, spool moved down, the fluid port closing.The refrigerant gas can not leak from the fluid outlet.

The device of described separating oil is characterized in that casing is a cylindrical shell, and pure refrigerant gas outlet is located at the highest point of diapire on the casing, and the fluid outlet is located at the lowest part of diapire under the casing.Make apparatus structure simple, the effect of separating oil is best.

The utility model compared with prior art, oil in the oil-containing refrigerant gas of refrigerating plant discharge is isolated, send compressor sump back to, pure refrigerant flow of gas has solved the stifled problem of refrigeration plant oil to system's kind of refrigeration cycle, and in the process of separating oil, because of establishing the float spool in the fluid exit, the refrigerant gas can not leak from the fluid outlet, and is simple in structure, manufacturing process is easy, and cost is low.

Fig. 1 is a main sectional structure schematic diagram of the present utility model.

Fig. 2 is the scheme of installation of the utility model in refrigerating plant.

Fig. 1, Fig. 2 are an embodiment of the present utility model.Contrast accompanying drawing below, further describe implementer's case of the present utility model, accompanying drawing be a kind of from refrigerating plant the device of separating oil, comprise the casing (3) that can seal a space, casing (3) wall is provided with oil-containing refrigerant gas import (1), diapire is provided with pure refrigerant gas outlet (2) on the casing, diapire is provided with fluid outlet (7) under the casing, the interior float (5) of the spool (6) that fluid outlet (7) is located and casing (3) is connected, float (5) is to drive the buoyancy aid that spool (6) floats in fluid, is furnished with the oil resistance filter screen (4) that can leach oily particulate in the oil-containing refrigerant gas in the passage between casing (3) interior oil-containing refrigerant gas import (1) and pure refrigerant gas outlet (2).The cylindrical shell inwall is slightly larger than cylindrical float, plays the guide effect to float.Fluid outlet (7) is located at the lowest part of diapire under the casing, is furnished with 4 layers of oil resistance filter screen (4) in the passage in the casing between oil-containing refrigerant gas import (1) and pure refrigerant gas outlet (2).This device is contained on the passage of the compressor (9) of refrigerating plant and the high-pressure refrigerant gas between the condenser (11), like this, oil-containing refrigerant gas enters casing (limit), filter out fluid through oil resistance filter screen (4), pure refrigerant gas enters systemic circulation from outlet (2) pass-out, the oil that leaches drops to the bottom in the gravity effect, when casing (3) inner fluid gathers float (5) when floating, float (5) drives on the spool (6) and moves, fluid outlet (7) is opened, fluid is under the pressure differential effect, feed the low-pressure reservoir (10) from fluid outlet (7), and pure cold-producing medium gas exports (2) from pure cold-producing medium gas and enters condenser (11), evaporimeter (8) circularly cooling.

Claims

1, a kind of from refrigerating plant the device of separating oil, comprise the casing (3) that can seal a space, casing (3) wall is provided with oil-containing refrigerant gas import (1), casing (3) is gone up diapire and is provided with pure refrigerant gas outlet (2), diapire is provided with fluid outlet (7) under the casing, it is characterized in that the interior float (5) of spool (6) that fluid outlet (7) locates and casing (3) is connected, float (5) is to drive the buoyancy aid that spool (6) floats in fluid, is furnished with the oil resistance filter screen (4) that can leach oily particulate in the oil-containing refrigerant gas in the passage between casing (3) interior oil-containing refrigerant gas import (1) and pure refrigerant gas outlet (2).

2, the device of separating oil according to claim 1 is characterized in that casing (3) is a cylindrical shell, and pure refrigerant gas outlet (2) is located at the highest point of diapire on the casing, and fluid outlet (7) is located at the lowest part of diapire under the casing.