CN200940976Y - Compression refrigerating oil return structure - Google Patents
Compression refrigerating oil return structure Download PDFInfo
- Publication number
- CN200940976Y CN200940976Y CN 200620123230 CN200620123230U CN200940976Y CN 200940976 Y CN200940976 Y CN 200940976Y CN 200620123230 CN200620123230 CN 200620123230 CN 200620123230 U CN200620123230 U CN 200620123230U CN 200940976 Y CN200940976 Y CN 200940976Y
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- China
- Prior art keywords
- pressure stage
- oil
- low
- check valve
- hiigh pressure
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Abstract
This utility model relates to a compressing and refrigerating oil returning structure comprising a high pressure level oil separator, a high pressure level partial outlet one-way valve, a high pressure level oil returning electromagnetic valve, a middle one-way valve, a middle electromagnetic valve, a low pressure level oil returning electromagnetic valve, an oil pump outlet one-way valve, a low pressure level partial outlet one-way valve, a pump, a low pressure level compressor, a low pressure oil separator, a high pressure level compressor, a high pressure compressor oil level floating ball switch, and a high pressure level oil separator oil level floating ball switch. The utility model is a full-automatic compressing and refrigerating oil returning structure which has simple structure and can ensure high and low pressure level compressor in safe operation.
Description
Technical field:
The utility model relates to a kind of compression refrigeration oil return structure.
Background technology:
Screw type refrigerating compressor work the time needs lubricating oil to play lubricated, cooling and sealing function in compressor.The lubricating oil of separating from oil eliminator normally relies on the pressure reduction of exhaust and compressor oil return opening or oil pump to send compressor back to.Adopt the high and low pressure stage compressor to join the Two-stage refrigerating system of beating, often needing two table oil pumps is two-stage compressor fuel feeding respectively.
Goal of the invention:
It is a kind of full automatic, simple in structure that the purpose of this utility model is to provide, and can guarantee a kind of compression refrigeration oil return structure of high and low pressure stage compressor safe operation.
Summary of the invention:
For achieving the above object, the utility model is taked following design: this compression refrigeration oil return structure is mainly by the hiigh pressure stage oil eliminator, hiigh pressure stage oil content outlet check valve, the hiigh pressure stage oil return solenoid valve, middle check valve, middle magnetic valve, the low-pressure stage oil return solenoid valve, oil pump outlet check valve, low-pressure stage oil content outlet check valve, oil pump, the low-pressure stage compressor, the low-pressure stage oil eliminator, the hiigh pressure stage compressor, hiigh pressure stage compressor oil level float switch, hiigh pressure stage oil eliminator oil level float switch is formed, the refrigerant gas that the exhaust outlet of described hiigh pressure stage compressor is connected described hiigh pressure stage oil eliminator with pipeline, the oil mixture inlet, with described hiigh pressure stage oil eliminator oil level float switch device in described hiigh pressure stage oil eliminator, the forward end that the oil export of described hiigh pressure stage oil eliminator is connected described hiigh pressure stage oil content outlet check valve with pipeline, the backward end of described hiigh pressure stage oil content outlet check valve is connected an end of described hiigh pressure stage oil return solenoid valve and the backward end of described middle check valve respectively with pipeline, an end that the forward end of check valve in the middle of described is connected described middle magnetic valve with pipeline, the other end of magnetic valve in the middle of described is connected an end of described low-pressure stage oil return solenoid valve and the backward end of described oil pump outlet check valve respectively with pipeline, the forward end of described oil pump outlet check valve is connected the outlet of described oil pump with pipeline, described oil pump inlet is connected the low-pressure stage oil export of described low-pressure stage oil eliminator and the forward end of described low-pressure stage oil content outlet check valve respectively with pipeline, the backward end of described low-pressure stage oil content outlet check valve is connected the other end of described low-pressure stage oil return solenoid valve and the air entry of described low-pressure stage compressor respectively with pipeline, the refrigerant gas that the exhaust outlet of described low-pressure stage compressor is connected described low-pressure stage oil eliminator with pipeline, the oil mixture inlet, the refrigerant gas outlet of described low-pressure stage oil eliminator is connected the other end of described hiigh pressure stage oil return solenoid valve and the air entry of described hiigh pressure stage compressor respectively with pipeline, the described hiigh pressure stage compressor oil level float switch of device in described hiigh pressure stage compressor.
Because the utility model adopts above technical scheme, when the low-pressure stage compressor had just started, oil pump also started simultaneously to not setting up the low-pressure stage compressor oil-supplying of pressure as yet, and this moment, the energising of low-pressure stage oil return solenoid valve was opened.Low-pressure stage oil content outlet check valve stops lubricating oil to return the oil pump inlet.After treating that the suction of low-pressure stage compressor, pressure at expulsion difference surpass setting value, oil pump is out of service, the outage of low-pressure stage oil return solenoid valve is closed, the low-pressure stage compressor relies on pressure reduction from another branch road oil return of low-pressure stage oil content outlet check valve is housed, oil pump outlet check valve stops lubricating oil to flow to the oil pump outlet, to prevent the oil pump counter-rotating; When the oil level in the hiigh pressure stage oil eliminator is high, the action of hiigh pressure stage oil eliminator oil level float switch, the energising of hiigh pressure stage oil return solenoid valve is opened, and the pressured difference of lubricating oil in the hiigh pressure stage oil eliminator is returned the hiigh pressure stage compressor, and middle check valve stops lubricating oil to flow to the low-pressure stage system.When hiigh pressure stage oil eliminator oil level hanged down, hiigh pressure stage oil eliminator oil level float switch resetted, and the outage of hiigh pressure stage oil return solenoid valve is closed; When oil level in the hiigh pressure stage compressor is low, the action of hiigh pressure stage compressor oil level float switch, pump start, hiigh pressure stage oil return solenoid valve, the energising of middle magnetic valve are opened, oil pump pumps into the hiigh pressure stage compressor with lubricating oil, and hiigh pressure stage oil content outlet check valve stops lubricating oil to enter the hiigh pressure stage oil eliminator.After treating that the low oil level warning is eliminated in the hiigh pressure stage compressor, oil pump is out of service, and hiigh pressure stage oil return solenoid valve, the outage of middle magnetic valve are closed.So, one table oil pump and 3 magnetic valves only are set in system, can be automatically according to system's operation needs, when low-pressure stage initial operating stage pressure reduction is not set up, low-pressure stage suction and discharge pressure reduction is respectively high and low pressure stage compressor fuel feeding when low, thereby guaranteed the safe operation of compressor less than when setting value, hiigh pressure stage compressor oil level.
Description of drawings:
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model structural representation
The specific embodiment:
As shown in Figure 1, this compression refrigeration oil return of the utility model structure is mainly by hiigh pressure stage oil eliminator 1, hiigh pressure stage oil content outlet check valve 2, hiigh pressure stage oil return solenoid valve 3, middle check valve 4, middle magnetic valve 5, low-pressure stage oil return solenoid valve 6, oil pump outlet check valve 7, low-pressure stage oil content outlet check valve 8, oil pump 9, low-pressure stage compressor 10, low-pressure stage oil eliminator 11, hiigh pressure stage compressor 12, hiigh pressure stage compressor oil level float switch 13, hiigh pressure stage oil eliminator oil level float switch 14 is formed, the refrigerant gas that the exhaust outlet 26 usefulness pipelines of described hiigh pressure stage compressor 12 is connected described hiigh pressure stage oil eliminator 1, oil mixture inlet 15, described hiigh pressure stage oil eliminator oil level float switch 14 is installed in described hiigh pressure stage oil eliminator 1, the forward end that the oil export 17 usefulness pipelines of described hiigh pressure stage oil eliminator 1 is connected described hiigh pressure stage oil content outlet check valve 2, the backward end of described hiigh pressure stage oil content outlet check valve 2 is connected an end of described hiigh pressure stage oil return solenoid valve 3 and the backward end of described middle check valve 4 respectively with pipeline, an end that the forward end of check valve 4 in the middle of described is connected described middle magnetic valve 5 with pipeline, the other end of magnetic valve 5 in the middle of described is connected an end of described low-pressure stage oil return solenoid valve 6 and the backward end of described oil pump outlet check valve 7 respectively with pipeline, the forward end of described oil pump outlet check valve 7 is connected the outlet 18 of described oil pump 9 with pipeline, described oil pump 9 inlets 19 usefulness pipelines are connected the low-pressure stage oil export 24 of described low-pressure stage oil eliminator 11 and the forward end of described low-pressure stage oil content outlet check valve 8 respectively, the backward end of described low-pressure stage oil content outlet check valve 8 is connected the other end of described low-pressure stage oil return solenoid valve 6 and the air entry 20 of described low-pressure stage compressor 10 respectively with pipeline, the refrigerant gas that the exhaust outlet 21 usefulness pipelines of described low-pressure stage compressor 10 is connected described low-pressure stage oil eliminator 11, oil mixture inlet 22, the refrigerant gas outlet 23 usefulness pipelines of described low-pressure stage oil eliminator 11 are connected the other end of described hiigh pressure stage oil return solenoid valve 3 and the air entry 25 of described hiigh pressure stage compressor 12 respectively, the described hiigh pressure stage compressor oil level float switch 13 of device in described hiigh pressure stage compressor 12.
Because the utility model adopts above technical scheme, when low-pressure stage compressor 10 had just started, oil pump 9 also started simultaneously to not setting up low-pressure stage compressor 10 fuel feeding of pressure as yet, and this moment, 6 energisings of low-pressure stage oil return solenoid valve were opened.Low-pressure stage oil content outlet check valve 8 stops lubricating oil to return oil pump 9 inlets.After treating that 10 suctions of low-pressure stage compressor, pressure at expulsion difference surpass setting value, oil pump 9 is out of service, 6 outages of low-pressure stage oil return solenoid valve are closed, low-pressure stage compressor 10 relies on pressure reduction from another branch road oil return of low-pressure stage oil content outlet check valve 8 is housed, oil pump outlet check valve 7 stops lubricating oil to flow to oil pump 9 outlets, to prevent oil pump 9 counter-rotatings; When the oil level in the hiigh pressure stage oil eliminator 1 is high, 14 actions of hiigh pressure stage oil eliminator oil level float switch, 3 energisings of hiigh pressure stage oil return solenoid valve are opened, and the pressured difference of lubricating oil in the hiigh pressure stage oil eliminator 1 is returned hiigh pressure stage compressor 12, and middle check valve 4 stops lubricating oil to flow to the low-pressure stage system.When hiigh pressure stage oil eliminator 1 oil level hanged down, hiigh pressure stage oil eliminator oil level float switch 14 resetted, and 3 outages of hiigh pressure stage oil return solenoid valve are closed; When oil level in the hiigh pressure stage compressor 12 is low, 13 actions of hiigh pressure stage compressor oil level float switch, oil pump 9 starts, hiigh pressure stage oil return solenoid valve 3,5 energisings of middle magnetic valve are opened, oil pump 9 pumps into hiigh pressure stage compressor 12 with lubricating oil, and hiigh pressure stage oil content outlet check valve 2 stops lubricating oil to enter hiigh pressure stage oil eliminator 1.After treating that the low oil level warning is eliminated in the hiigh pressure stage compressor 12, oil pump 9 is out of service, and hiigh pressure stage oil return solenoid valve 3,5 outages of middle magnetic valve are closed.So, one table oil pump and 3 magnetic valves only are set in system, can be automatically according to system's operation needs, when low-pressure stage initial operating stage pressure reduction is not set up, low-pressure stage suction and discharge pressure reduction is respectively high and low pressure stage compressor fuel feeding when low, thereby guaranteed the safe operation of compressor less than when setting value, hiigh pressure stage compressor oil level.
Below only be an embodiment of the present utility model, any based on equivalents of the present utility model all within protection domain of the present utility model.
Claims (1)
1, a kind of compression refrigeration oil return structure, mainly by the hiigh pressure stage oil eliminator, hiigh pressure stage oil content outlet check valve, the hiigh pressure stage oil return solenoid valve, middle check valve, middle magnetic valve, the low-pressure stage oil return solenoid valve, oil pump outlet check valve, low-pressure stage oil content outlet check valve, oil pump, the low-pressure stage compressor, the low-pressure stage oil eliminator, the hiigh pressure stage compressor, hiigh pressure stage compressor oil level float switch, hiigh pressure stage oil eliminator oil level float switch is formed, it is characterized in that: the refrigerant gas that the exhaust outlet of described hiigh pressure stage compressor is connected described hiigh pressure stage oil eliminator with pipeline, the oil mixture inlet, with described hiigh pressure stage oil eliminator oil level float switch device in described hiigh pressure stage oil eliminator, the forward end that the oil export of described hiigh pressure stage oil eliminator is connected described hiigh pressure stage oil content outlet check valve with pipeline, the backward end of described hiigh pressure stage oil content outlet check valve is connected an end of described hiigh pressure stage oil return solenoid valve and the backward end of described middle check valve respectively with pipeline, an end that the forward end of check valve in the middle of described is connected described middle magnetic valve with pipeline, the other end of magnetic valve in the middle of described is connected an end of described low-pressure stage oil return solenoid valve and the backward end of described oil pump outlet check valve respectively with pipeline, the forward end of described oil pump outlet check valve is connected the outlet of described oil pump with pipeline, described oil pump inlet is connected the low-pressure stage oil export of described low-pressure stage oil eliminator and the forward end of described low-pressure stage oil content outlet check valve respectively with pipeline, the backward end of described low-pressure stage oil content outlet check valve is connected the other end of described low-pressure stage oil return solenoid valve and the air entry of described low-pressure stage compressor respectively with pipeline, the refrigerant gas that the exhaust outlet of described low-pressure stage compressor is connected described low-pressure stage oil eliminator with pipeline, the oil mixture inlet, the refrigerant gas outlet of described low-pressure stage oil eliminator is connected the other end of described hiigh pressure stage oil return solenoid valve and the air entry of described hiigh pressure stage compressor respectively with pipeline, the described hiigh pressure stage compressor oil level float switch of device in described hiigh pressure stage compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123230 CN200940976Y (en) | 2006-08-01 | 2006-08-01 | Compression refrigerating oil return structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620123230 CN200940976Y (en) | 2006-08-01 | 2006-08-01 | Compression refrigerating oil return structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200940976Y true CN200940976Y (en) | 2007-08-29 |
Family
ID=38747152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620123230 Expired - Lifetime CN200940976Y (en) | 2006-08-01 | 2006-08-01 | Compression refrigerating oil return structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200940976Y (en) |
-
2006
- 2006-08-01 CN CN 200620123230 patent/CN200940976Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070829 |
|
| EXPY | Termination of patent right or utility model |