CN101858349B - Oil supply loop of screw rod type refrigeration compressor flooded unit - Google Patents
Oil supply loop of screw rod type refrigeration compressor flooded unit Download PDFInfo
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- CN101858349B CN101858349B CN2009100816659A CN200910081665A CN101858349B CN 101858349 B CN101858349 B CN 101858349B CN 2009100816659 A CN2009100816659 A CN 2009100816659A CN 200910081665 A CN200910081665 A CN 200910081665A CN 101858349 B CN101858349 B CN 101858349B
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- supply loop
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Abstract
The invention discloses an oil supply loop of a screw rod type refrigeration compressor flooded unit, which relates to the technical field of air-conditioning refrigeration. The oil supply loop comprises a screw rod type refrigeration compressor, a differential pressure switch and an external oil circulating system, wherein the differential pressure switch is connected between an air suction port and an air exhaust port of the screw rod type refrigeration compressor; and the external oil circulating system consists of an oil splitter, an oil flow switch, an oil pump, a solenoid valve 1, an oil filter, an oil differential pressure switch, an oil cooler and an oil separator. The oil supply loop has the structure characteristics that: a solenoid valve 2 connected in parallel between the solenoid valve 1 and the oil pump connected with the solenoid valve 1 and a check valve connected with the solenoid valve 2 are arranged between the oil filter and the oil flow switch of the external oil circulating system; and the differential pressure switch controls the oil pump in a servo manner. Compared with the prior art, the oil supply loop has the advantages of providing reliable and effective oil supply pressure difference for compressors under different operation conditions and guaranteeing normal lubrication and working of the system, along with convenient operation and suitability for long-term running and use of the unit.
Description
Technical field
The present invention relates to the air conditioner refrigerating technical field, especially for the fuel supply method and the device of screw rod type refrigeration compressor flooded unit.
Background technique
Screw rod type refrigeration compressor flooded unit receives user's favor deeply because its refrigerating capacity is big, the coefficient of performance of refrigerating advantages of higher.The proper functioning that the large-scale screw type refrigerating compressor of this product bearing portions that adopt external oil circulating system to guarantee screw type refrigerating compressor lubricated more, pressing chamber sealed and held adjusting system.
In the existing technology, the fuel feeding scheme of the big screw rod type refrigeration compressor flooded unit of capacity is generally taked dual mode: a kind of be utilize that compressor is inhaled, exhaust pressure reduction carries out the mode of fuel feeding as power, and is as shown in Figure 1.This fuel system is in the unit starting stage; Because chilled water and cooling water temperature also do not draw back; Can't set up the pressure reduction of compressor oil-supplying system proper functioning in short time, cause compressor can't accomplish loading procedure, fuel delivery causes lubrication failure less and damages compressor.The common way of this moment reduces chilled water or cooling water inflow, after the system of treating sets up certain pressure reduction for regulating the valve of water system; Return to the normal water yield of unit more gradually, but this operation labor intensity is big, needs the professional workforce to instruct; Controlling cost of water route is very high, and the unit operation reliability is relatively poor.Another kind is to carry out the mode of fuel feeding with oil pump as power, and is as shown in Figure 2.Because the operating life of oil pump oil sealing is shorter, replacing can not cause the leakage of system refrigerant and oil on schedule, so oil pump is not suitable for long-term operation, and very trouble is safeguarded and changed to the oil sealing of oil pump.
Summary of the invention
In order to solve the problem that exists in the above-mentioned existing technology, the purpose of this invention is to provide a kind of oil supply loop of screw rod type refrigeration compressor flooded unit.It can provide reliable and effective fuel feeding pressure reduction to the compressor under the different operating conditionss, guarantees the normal lubricated and work of system, and is easy to operate, is fit to the unit long-term operation and uses.
In order to reach the foregoing invention purpose, technological scheme of the present invention realizes as follows:
A kind of oil supply loop of screw rod type refrigeration compressor flooded unit, it comprises screw type refrigerating compressor, inhales with screw type refrigerating compressor, the differential pressure switch that is connected between the relief opening and the external oil circulating system of being made up of oil splitter, oily flow switch, oil pump, solenoid valve one, oil strainer, oil pressure difference switch, oil cooler, oil separator.Its structural feature is to be equipped with the solenoid valve two and the one-way valve that is connected with solenoid valve two that are parallel to solenoid valve one and the oil pump that is connected with solenoid valve one in the said external oil circulating system between oil strainer and the oily flow switch, differential pressure switch servocontrol oil pump.
The present invention is owing to adopted said structure; Fuel system so that compressor is inhaled, exhaust pressure reduction is power is main, is auxilliary with the parallel pipeline fuel system, has reduced the running time of oil pump; Prolong the working life of oil pump oil sealing and the service cycle of unit, reduced the unit operation cost.Be lower than under the situation of the minimum fuel feeding pressure differential resetting of compressor safe operation value monitoring compressor start stage and operating suction, exhaust pressure reduction, start the oil pump in the parallel pipeline; When the compressor suction, when exhaust pressure reduction returns to normal value, oil pump is out of service.The present invention has set up reliable and stable fuel feeding pressure reduction in the external oil circulating system of compressor; Reduced the power consumption of oil pump; Improve the efficiency of unit operation, can guarantee the proper functioning that the bearing portion of Spiral Lobe Refrigeration Compressor is lubricated, pressing chamber seals and hold adjusting system.
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Description of drawings
Inhale by compressor in order to utilize in the existing technology for Fig. 1, exhaust pressure reduction is as the structural representation of power fuel system;
Fig. 2 is with the structural representation of oil pump as the power fuel system in the existing technology;
Fig. 3 is a structural representation of the present invention.
Embodiment
Referring to Fig. 3, differential pressure switch 2 that the present invention includes screw type refrigerating compressor 1, inhales, is connected between the relief opening and the external oil circulating system of forming by oil splitter 11, oily flow switch 4, oil pump 6, solenoid valve 1, oil strainer 3, oil pressure difference switch 8, oil cooler 9, oil separator 10 with screw type refrigerating compressor 1.Be equipped with the solenoid valve 2 5.2 and the one-way valve 7 that is connected with solenoid valve 2 5.2 that are parallel to solenoid valve 1 and the oil pump 6 that is connected with solenoid valve 1 in the external oil circulating system between oil strainer 3 and the oily flow switch 4.Differential pressure switch 2 servocontrol oil pumps 6.
The screw rod type refrigeration compressor flooded unit of the present invention is the start up period of screw type refrigerating compressor 1; When higher the or condenser water temperature of evaporator water is lower; The difference of the air-breathing pressure with exhaust of screw type refrigerating compressor 1 is less than the Minimum differntial pressure that guarantees proper lubrication, and the solenoid valve 1 of oil pump 6 imports is opened, and oil pump 6 starts the operation fuel feeding. when screw type refrigerating compressor 1 is inhaled, exhaust pressure reduction returns to normal value when above; Oil pump 6 is out of service; The solenoid valve 1 of its inlet cuts out, and avoids impacting with high pressure with protection oil pump 6, and this moment, oil circulating system was that power carries out fuel feeding with suction, the exhaust pressure reduction of screw type refrigerating compressor 1 self.The one-way valve 7 parallelly connected with oil pump 6 in the system, fry dried food ingredients is given birth to short-circuit cycle when being used for preventing oil pump 6 work.One-way valve 7 inlet's solenoid valves 2 5.2 are with the startup of screw type refrigerating compressor 1 and stop and opening and closing; When being used for preventing that screw type refrigerating compressor 1 from shutting down; In time the pressure of balance makes lubricant oil continue to flow into the screw compression chamber, oil takes place when avoiding starting once more hit phenomenon and damage or transship and start failure.
Claims (1)
1. the oil supply loop of a screw rod type refrigeration compressor flooded unit; Differential pressure switch (2) that it comprises screw type refrigerating compressor (1), inhale with screw type refrigerating compressor (1), be connected between the relief opening and the external oil circulating system of forming by oil splitter (11), oily flow switch (4), oil pump (6), solenoid valve one (5.1), oil strainer (3), oil pressure difference switch (8), oil cooler (9), oil separator (10); It is characterized in that; Be equipped with the solenoid valve two (5.2) and the one-way valve (7) that is connected with solenoid valve two (5.2), differential pressure switch (2) servocontrol oil pump (6) that are parallel to solenoid valve one (5.1) and the oil pump (6) that is connected with solenoid valve one (5.1) in the said external oil circulating system between oil strainer (3) and the oily flow switch (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100816659A CN101858349B (en) | 2009-04-08 | 2009-04-08 | Oil supply loop of screw rod type refrigeration compressor flooded unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100816659A CN101858349B (en) | 2009-04-08 | 2009-04-08 | Oil supply loop of screw rod type refrigeration compressor flooded unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101858349A CN101858349A (en) | 2010-10-13 |
| CN101858349B true CN101858349B (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100816659A Active CN101858349B (en) | 2009-04-08 | 2009-04-08 | Oil supply loop of screw rod type refrigeration compressor flooded unit |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606452A (en) * | 2012-03-15 | 2012-07-25 | 中国核电工程有限公司 | Pre-lubricating system of compressor |
| CN109876513B (en) * | 2019-03-13 | 2023-12-08 | 成都飞机工业（集团）有限责任公司 | Method and device for purifying full-oil-quantity oil liquid of oiling device |
| CN112146227B (en) * | 2020-08-31 | 2022-04-12 | 珠海格力电器股份有限公司 | Pressure detection switch, air conditioner control method and device, air conditioner and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2100549U (en) * | 1991-09-04 | 1992-04-01 | 沈阳润滑设备厂 | Flow-variable diluted oil lubrication device without reservoir |
| EP0758054A1 (en) * | 1995-08-09 | 1997-02-12 | SULZER-ESCHER WYSS GmbH | Oil circulation system for screw compressors |
| JP3050395B2 (en) * | 1990-06-12 | 2000-06-12 | 国立感染症研究所長 | Hepatitis C virus antigen polypeptide, method for producing the same, and method for detecting antibody |
| CN201016307Y (en) * | 2006-11-08 | 2008-02-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Combustion engine set lubricating oil and jacking oil supplying system |
| CN201439756U (en) * | 2009-04-08 | 2010-04-21 | 同方人工环境有限公司 | Oil supply circuit of flooded unit of screw-rod refrigerating compressor |
-
2009
- 2009-04-08 CN CN2009100816659A patent/CN101858349B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3050395B2 (en) * | 1990-06-12 | 2000-06-12 | 国立感染症研究所長 | Hepatitis C virus antigen polypeptide, method for producing the same, and method for detecting antibody |
| CN2100549U (en) * | 1991-09-04 | 1992-04-01 | 沈阳润滑设备厂 | Flow-variable diluted oil lubrication device without reservoir |
| EP0758054A1 (en) * | 1995-08-09 | 1997-02-12 | SULZER-ESCHER WYSS GmbH | Oil circulation system for screw compressors |
| CN201016307Y (en) * | 2006-11-08 | 2008-02-06 | 沈阳黎明航空发动机(集团)有限责任公司 | Combustion engine set lubricating oil and jacking oil supplying system |
| CN201439756U (en) * | 2009-04-08 | 2010-04-21 | 同方人工环境有限公司 | Oil supply circuit of flooded unit of screw-rod refrigerating compressor |
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| Publication number | Publication date |
|---|---|
| CN101858349A (en) | 2010-10-13 |
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