CN109945540B - Water-cooling full-liquid type double-circulation parallel system and oil return balancing method thereof - Google Patents
Water-cooling full-liquid type double-circulation parallel system and oil return balancing method thereof Download PDFInfo
- Publication number
- CN109945540B CN109945540B CN201910176752.6A CN201910176752A CN109945540B CN 109945540 B CN109945540 B CN 109945540B CN 201910176752 A CN201910176752 A CN 201910176752A CN 109945540 B CN109945540 B CN 109945540B
- Authority
- CN
- China
- Prior art keywords
- oil
- outlet
- air
- compressor
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000003507 refrigerant Substances 0.000 claims description 83
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 231
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a water-cooling full-liquid type double-circulation parallel system and an oil return balancing method thereof. The water-cooling full-liquid type double-circulation parallel system adopts an oil tank pressure equalizing mode to realize oil balance of the system, and improves the safety and reliability of the system.
Description
Technical Field
The invention relates to the field of oil return of central air conditioner compressors, in particular to a water-cooling flooded double-circulation parallel system and an oil return balancing method thereof.
Background
In the actual use process of the traditional central air conditioner, most of the unit time is in a partial load running state, and the double-compressor system has higher energy efficiency and more flexible energy adjustment due to the partial load running, so that the double-compressor system is more and more popular in the market, and the double-compressor system inevitably brings about the problem of lubricating oil balance between the two systems; because the individual differences of the compressors or the differences of the systems cause certain differences of the high pressures of the two compressors, even if the high pressure is deficient in oil, the high pressure is continuously supplied to the low pressure compressor, so that the high pressure is deficient in oil, and when one of the compressors is in a stop state, the two compressors cannot realize oil balance due to large pressure difference.
Disclosure of Invention
The invention aims to provide a water-cooling full-liquid type double-circulation parallel system and an oil return balancing method thereof, wherein the water-cooling full-liquid type double-circulation parallel system adopts an oil tank pressure equalizing mode to realize system oil balance, and the safety and reliability of the system are improved.
The technical scheme is as follows:
the water-cooling full-liquid type double-circulation parallel system is characterized by comprising a first compressor, a second compressor, a first oil separator, a second oil separator and an oil tank, wherein the first compressor comprises a first exhaust port, a first air suction port and a first oil return port, the second compressor comprises a second exhaust port, a second air suction port and a second oil return port, the first oil separator comprises a first refrigerant inlet, a first air outlet and a first oil outlet, the second oil separator comprises a second refrigerant inlet, a second air outlet and a second oil outlet, the oil tank comprises a first oil inlet, a second oil inlet, a third oil outlet and a fourth oil outlet, the first exhaust port and the second exhaust port are respectively connected with the first refrigerant inlet and the second refrigerant inlet through pipelines, the first air outlet and the second air outlet are respectively communicated with the first air suction port and the second air suction port, the first oil outlet and the second oil outlet are respectively connected with the first oil inlet and the second oil inlet through pipelines, and the third oil outlet and the fourth oil outlet are respectively connected with the first oil return port and the second oil return port through pipelines.
The oil tank further comprises a third exhaust port and a fourth exhaust port, the first compressor further comprises a first air return port, the second compressor further comprises a second air return port, and the third exhaust port and the fourth exhaust port are respectively connected with the first air return port and the second air return port through pipelines.
The third oil outlet and the fourth oil outlet are respectively arranged at the bottom of the oil tank, the first oil inlet, the second oil inlet, the third air outlet and the fourth air outlet are respectively arranged at the top of the oil tank, and the volume of eighty percent of the oil tank is larger than the total volume of refrigerating oil required by the operation of the first compressor and the second compressor.
The air conditioner further comprises a first air exhaust electromagnetic valve and a second air exhaust electromagnetic valve, and the third air exhaust port and the fourth air exhaust port are respectively connected with the first air return port and the second air return port through the first air exhaust electromagnetic valve and the second air exhaust electromagnetic valve.
The device further comprises a first one-way valve and a second one-way valve, wherein the first oil outlet and the second oil outlet are respectively connected with the first oil inlet through the first one-way valve and the second one-way valve, and the second oil inlet is connected with the pipeline.
The oil return device is characterized by further comprising a first oil return electromagnetic valve and a second oil return electromagnetic valve, wherein the third oil outlet and the fourth oil outlet are respectively connected with the first oil return port and the second oil return port through the first oil return electromagnetic valve and the second oil return electromagnetic valve.
The condenser comprises a third refrigerant inlet, a fourth refrigerant inlet, a third gas outlet and a fourth gas outlet, wherein the first gas outlet and the second gas outlet are respectively connected with the third refrigerant inlet and the fourth refrigerant inlet through pipelines, and the third gas outlet and the fourth gas outlet are respectively communicated with the first air suction port and the second air suction port.
The evaporator further comprises a fifth refrigerant inlet, a sixth refrigerant inlet, a fifth gas outlet and a sixth gas outlet, wherein the third gas outlet and the fourth gas outlet are respectively connected with the fifth refrigerant inlet and the sixth refrigerant inlet through pipelines, and the fifth gas outlet and the sixth gas outlet are respectively connected with the first air suction port and the second air suction port through pipelines.
The air conditioner further comprises a first throttle orifice plate and a second throttle orifice plate, wherein the third air outlet and the fourth air outlet are respectively connected with a fifth refrigerant inlet and a sixth refrigerant inlet pipeline through the first throttle orifice plate and the second throttle orifice plate.
The oil return balancing method of the water-cooling flooded double-circulation parallel system comprises the following steps:
oil and refrigerant mixtures discharged from a first exhaust port and a second exhaust port of the first compressor and the second compressor are respectively separated by a first oil separator and a second oil separator, and then respectively generate a first gas refrigerant, a first oil, a second gas refrigerant and a second oil;
the first air refrigerant and the second air refrigerant are subjected to heat exchange and then respectively flow back into the first compressor and the second compressor through the first air suction port and the second air suction port to be recompressed;
the first oil and the second oil flow into the oil tank through the first oil inlet and the second oil inlet respectively;
the first oil and the second oil flowing into the oil tank are subjected to mixing balance pressure equalizing in the oil tank, and the mixed balance pressure equalizing oil flows back to the first compressor and the second compressor from the third oil outlet and the fourth oil outlet respectively through the first oil return port and the second oil return port, so that oil balance is realized.
It should be noted that:
the foregoing "first and second …" do not represent a specific number or order, but are merely for distinguishing between names.
The advantages and principles of the invention are described below:
1. the water-cooling full-liquid type double-circulation parallel system comprises a first compressor, a second compressor, a first oil separator, a second oil separator and an oil tank, wherein the first compressor and the second compressor are used for compressing low-pressure gas into high-temperature high-pressure gas through the first compressor and the second compressor after sucking the low-pressure gas, and oil and refrigerant mixed gas discharged from a first exhaust port and a second exhaust port of the first compressor and the second compressor are separated through the first oil separator and the second oil separator respectively to generate each gas refrigerant, each first oil, each second gas refrigerant and each second oil;
the first air refrigerant and the second air refrigerant are subjected to heat exchange and then become low-pressure low-temperature air, and the low-pressure low-temperature air flows back into the first compressor and the second compressor through the first air suction port and the second air suction port respectively for re-air compression; the first oil and the second oil flow into the oil tank through the first oil inlet and the second oil inlet respectively; the first oil and the second oil flowing into the oil tank are subjected to mixing balance and pressure equalizing in the oil tank, and the mixed balance and pressure equalizing oil flows back into the first compressor and the second compressor from the third oil outlet and the fourth oil outlet respectively through the first oil return port and the second oil return port so as to realize oil balance;
the water-cooling full-liquid type double-circulation parallel system adopts an oil tank pressure equalizing mode to realize oil balance of the system, and improves the safety and reliability of the system.
2. The oil tank also comprises a third exhaust port and a fourth exhaust port, the top of the oil tank is additionally provided with two paths of exhaust ports, and the refrigerant gas entering the oil tank along with the first oil and the second oil can be timely discharged.
3. The eighty percent volume of the oil tank is larger than the total capacity of the refrigerating oil required by the operation of the first compressor and the second compressor, and the balance and pressure equalizing of the oil tank are ensured.
4. The first exhaust electromagnetic valve and the second exhaust electromagnetic valve are arranged, so that when the compressor stops running, the exhaust pipeline is conveniently controlled to be cut off.
5. The arrangement of the first one-way valve and the second one-way valve prevents the first oil refrigerant and the second oil refrigerant which enter the oil tank from flowing back into the first oil separator and the second oil separator, and ensures the safety of the system.
6. The first oil return electromagnetic valve and the second oil return electromagnetic valve are arranged, so that when the compressor stops running, the cutting-off of an oil return pipeline can be conveniently controlled.
7. The water-cooling flooded double-circulation parallel system further comprises a condenser, and the first gas refrigerant and the second gas refrigerant are condensed into liquid after heat exchange of the condenser.
8. The water-cooling full-liquid type double-circulation parallel system further comprises an evaporator, liquid flowing out of the condenser enters the evaporator again to be evaporated, the liquid becomes low-pressure low-temperature gas after passing through the evaporator, and the low-pressure low-temperature gas is sucked by the compressor again to be compressed.
9. The water-cooling full-liquid type double-circulation parallel system also comprises a first throttling orifice plate and a second throttling orifice plate, so that the flow speed and the pressure of liquid flowing out of the condenser are increased.
Drawings
FIG. 1 is a schematic plan view of a water-cooled flooded dual-cycle parallel system in accordance with an embodiment of the invention.
Reference numerals illustrate:
10. the first compressor, 11, first discharge port, 12, first suction port, 13, first return port, 14, first return port, 20, second compressor, 21, second discharge port, 22, second suction port, 23, second return port, 24, second return port, 30, first oil separator, 31, first refrigerant inlet, 32, first air outlet, 33, first oil outlet, 40, second oil separator, 41, second refrigerant inlet, 42, second air outlet, 43, second oil outlet, 50, oil tank, 51, first oil inlet, 52, second oil inlet, 53, third oil outlet, 54, fourth oil outlet, 55, third discharge port, 56, fourth discharge port, 61, first discharge solenoid valve, 62, second discharge solenoid valve, 63, first check valve, 64, second check valve, 65, first return solenoid valve, 66, second return solenoid valve, 70, condenser, 71, third refrigerant inlet, 72, fourth refrigerant inlet, 73, third air outlet, 74, fourth evaporator, 80, fifth evaporator, 92, sixth evaporator, fifth air outlet, 83, sixth air orifice, 81, sixth air inlet, sixth evaporator, sixth air outlet, and throttle orifice.
Detailed Description
The following describes embodiments of the present invention in detail.
As shown in fig. 1, the water-cooled flooded dual-cycle parallel system comprises a first compressor 10, a second compressor 20, a first oil separator 30, a second oil separator 40 and an oil tank 50, wherein the first compressor 10 comprises a first exhaust port 11, a first air suction port 12 and a first oil return port 13, the second compressor 20 comprises a second exhaust port 21, a second air suction port 22 and a second oil return port 23, the first oil separator 30 comprises a first refrigerant inlet 31, a first air outlet 32 and a first oil outlet 33, the second oil separator 40 comprises a second refrigerant inlet 41, a second air outlet 42 and a second oil outlet 43, the oil tank 50 comprises a first oil inlet 51, a second oil inlet 52, a third oil outlet 53 and a fourth oil outlet 54, the first exhaust port 11 and the second exhaust port 21 are respectively connected with the first refrigerant inlet 31 and the second refrigerant inlet 41 in a pipeline, the first air outlet 32 and the second air outlet 42 are respectively communicated with the first air suction port 12 and the second air suction port 22, the first oil outlet 33 and the second oil outlet 43 is respectively connected with the first oil inlet 51, the second oil outlet 52 and the second oil outlet 53 is respectively connected with the second oil inlet 52, the third oil outlet 53 and the fourth oil outlet 54 is connected with the fourth oil inlet 23 and the fourth oil outlet is respectively connected with the fourth oil inlet 23.
The oil tank 50 further comprises a third exhaust port 55 and a fourth exhaust port 56, the first compressor 10 further comprises a first air return port 14, the second compressor 20 further comprises a second air return port 24, and the third exhaust port 55 and the fourth exhaust port 56 are respectively connected with the first air return port 14 and the second air return port 24 in a pipeline manner;
the third oil outlet 53 and the fourth oil outlet 54 are respectively arranged at the bottom of the oil tank 50, the first oil inlet 51, the second oil inlet 52, the third air outlet 55 and the fourth air outlet 56 are respectively arranged at the top of the oil tank 50, and the volume of eighty percent of the oil tank 50 is larger than the total volume of refrigerating oil required by the operation of the first compressor 10 and the second compressor 20;
the water-cooling full-liquid type double-circulation parallel system further comprises a first exhaust electromagnetic valve 61, a second exhaust electromagnetic valve 62, a first one-way valve 63, a second one-way valve 64, a first oil return electromagnetic valve 65, a second oil return electromagnetic valve 66, a condenser 70, an evaporator 80, a first orifice plate 91 and a second orifice plate 92, wherein the third exhaust port 55 and the fourth exhaust port 56 are respectively connected with the first air return port 14 and the second air return port 24 in a pipeline manner through the first exhaust electromagnetic valve 61 and the second exhaust electromagnetic valve 62; the first oil outlet 33 and the second oil outlet 43 are respectively connected with the first oil inlet 51 and the second oil inlet 52 through a first check valve 63 and a second check valve 64 in a pipeline manner; the third oil outlet 53 and the fourth oil outlet 54 are respectively connected with the first oil return port 13 and the second oil return port 23 through a first oil return electromagnetic valve 65 and a second oil return electromagnetic valve 66 in a pipeline manner;
the condenser 70 includes a third refrigerant inlet 71, a fourth refrigerant inlet 72, a third gas outlet 73, and a fourth gas outlet 74, the first gas outlet 32 and the second gas outlet 73 are respectively connected to the third refrigerant inlet 71 and the fourth refrigerant inlet 72 by pipes, and the third gas outlet 73 and the fourth gas outlet 74 are respectively communicated with the first air suction port 12 and the second air suction port 22;
the evaporator 80 includes a fifth refrigerant inlet 81, a sixth refrigerant inlet 82, a fifth gas outlet 83, and a sixth gas outlet 84, the third gas outlet 73 and the fourth gas outlet 74 are respectively connected to the fifth refrigerant inlet 81 and the sixth refrigerant inlet 82 by pipes through the first orifice plate 91 and the second orifice plate 92, and the fifth gas outlet 83 and the sixth gas outlet 84 are respectively connected to the first suction port 12 and the second suction port 22 by pipes.
The oil return balancing method of the water-cooling flooded double-circulation parallel system comprises the following steps:
the oil and refrigerant mixture discharged from the first discharge port 11 and the second discharge port 21 of the first compressor 10 and the second compressor 20 are separated by the first oil separator 30 and the second oil separator 40, respectively, and then a first gas refrigerant, a first oil, a second gas refrigerant, and a second oil are generated, respectively;
after heat exchange, the first air refrigerant and the second air refrigerant respectively flow back into the first compressor 10 and the second compressor 20 through the first air suction port 12 and the second air suction port 22 for re-air compression;
the first oil and the second oil flow into the oil tank 50 through a first oil inlet 51 and a second oil inlet 52 respectively;
the first oil and the second oil flowing into the oil tank 50 are subjected to mixing and balancing pressure equalization in the oil tank 50, and the mixed and balanced pressure equalization oil flows back into the first compressor 10 and the second compressor 20 from the third oil outlet 53 and the fourth oil outlet 54 respectively through the first oil return port 13 and the second oil return port 23, so that oil balance is realized.
This embodiment has the following advantages:
1. the water-cooling full-liquid type double-circulation parallel system comprises a first compressor 10, a second compressor 20, a first oil separator 30, a second oil separator 40 and an oil tank 50, wherein low-pressure gas is sucked into the first compressor 10 and the second compressor 20, then compressed into high-temperature and high-pressure gas through the first compressor 10 and the second compressor 20, and the high-temperature and high-pressure gas is separated from oil and refrigerant mixed gas discharged from a first exhaust port 11 and a second exhaust port 21 of the first compressor 10 and the second compressor 20 through the first oil separator 30 and the second oil separator 40 respectively to generate a first gas refrigerant, a first oil, a second gas refrigerant and a second oil respectively;
the first air refrigerant and the second air refrigerant are changed into low-pressure low-temperature air after heat exchange, and respectively flow back into the first compressor 10 and the second compressor 20 through the first air suction port 12 and the second air suction port 22 for re-air compression; the first oil and the second oil flow into the oil tank 50 through a first oil inlet 51 and a second oil inlet 52 respectively; the first oil and the second oil flowing into the oil tank 50 are subjected to mixing balance and pressure equalizing in the oil tank 50, and oil refrigerants subjected to mixing balance and pressure equalizing flow back into the first compressor 10 and the second compressor 20 from the third oil outlet 53 and the fourth oil outlet 54 respectively through the first oil return port 13 and the second oil return port 23 so as to realize oil balance;
the water-cooling full-liquid type double-circulation parallel system adopts the oil tank 50 pressure equalizing mode to realize the oil balance of the system, and improves the safety and reliability of the system.
2. The oil tank 50 further includes a third air outlet 55 and a fourth air outlet 56, and two air outlets are additionally provided at the top of the oil tank 50, so that the refrigerant gas entering the oil tank 50 along with the first oil and the second oil can be timely discharged, and the refrigerant gas at this time is high-temperature and high-pressure gas, so that the refrigerant gas returns to the first air return port 14 and the second air return port 24 in the middle of the first compressor 10 and the second compressor 20 respectively.
3. Eighty percent of the volume of the oil tank 50 is larger than the total capacity of the refrigerating oil required by the operation of the first compressor 10 and the second compressor 20, and the balance and pressure equalizing of the oil tank 50 are ensured.
4. The arrangement of the first exhaust electromagnetic valve 61 and the second exhaust electromagnetic valve 62 facilitates the control of the cutting off of the exhaust pipeline when the compressor stops running.
5. The first check valve 63 and the second check valve 64 prevent the first oil refrigerant and the second oil refrigerant which enter the oil tank 50 from flowing back into the first oil separator 30 and the second oil separator 40, and ensure the safety of the system.
6. The first oil return electromagnetic valve 65 and the second oil return electromagnetic valve 66 are arranged, so that when the compressor stops running, the cutting-off of an oil return pipeline is conveniently controlled.
7. The water-cooling flooded dual-cycle parallel system further comprises a condenser 70, wherein the first gas refrigerant and the second gas refrigerant are condensed into liquid after heat exchange is performed by the condenser 70.
8. The water-cooling flooded dual-cycle parallel system further comprises an evaporator 80, wherein the liquid flowing out of the condenser 70 enters the evaporator 80 again for evaporation, the liquid is changed into low-pressure low-temperature gas after passing through the evaporator 80, and the low-temperature gas is sucked by the compressor again for compression.
9. The water-cooled flooded dual-cycle parallel system further comprises a first orifice plate 91 and a second orifice plate 92, so that the flow rate and pressure of the liquid flowing out of the condenser 70 are increased.
The foregoing is merely exemplary embodiments of the present invention, and is not intended to limit the scope of the present invention; any substitutions and modifications made without departing from the spirit of the invention are within the scope of the invention.
Claims (6)
1. The water-cooling full-liquid type double-circulation parallel system is characterized by comprising a first compressor, a second compressor, a first oil separator, a second oil separator and an oil tank, wherein the first compressor comprises a first exhaust port, a first air suction port and a first oil return port, the second compressor comprises a second exhaust port, a second air suction port and a second oil return port, the first oil separator comprises a first refrigerant inlet, a first air outlet and a first oil outlet, the second oil separator comprises a second refrigerant inlet, a second air outlet and a second oil outlet, the oil tank comprises a first oil inlet, a second oil inlet, a third oil outlet and a fourth oil outlet, the first exhaust port and the second exhaust port are respectively connected with the first refrigerant inlet and the second refrigerant inlet through pipelines, the first oil outlet and the second oil outlet are respectively connected with the first air suction port and the second air suction port through pipelines, the first oil outlet and the second oil outlet are respectively connected with the first oil inlet and the second oil inlet through pipelines, and the third oil outlet and the fourth oil outlet are respectively connected with the first oil return port and the second oil return port through pipelines;
the oil tank further comprises a third exhaust port and a fourth exhaust port, the first compressor further comprises a first air return port, the second compressor further comprises a second air return port, and the third exhaust port and the fourth exhaust port are respectively connected with the first air return port and the second air return port through pipelines;
the third oil outlet and the fourth oil outlet are respectively arranged at the bottom of the oil tank, the first oil inlet, the second oil inlet, the third air outlet and the fourth air outlet are respectively arranged at the top of the oil tank, and the eighty percent volume of the oil tank is larger than the total volume of refrigerating oil required by the operation of the first compressor and the second compressor;
the air inlet pipe is connected with the first air inlet pipe and the second air inlet pipe through the first air inlet electromagnetic valve and the second air inlet electromagnetic valve respectively;
the device further comprises a first one-way valve and a second one-way valve, wherein the first oil outlet and the second oil outlet are respectively connected with the first oil inlet through the first one-way valve and the second one-way valve, and the second oil inlet is connected with the pipeline.
2. The water-cooled flooded dual-cycle parallel system of claim 1, further comprising a first oil return solenoid valve, a second oil return solenoid valve, wherein the third oil outlet and the fourth oil outlet are respectively connected with the first oil return port and the second oil return port through the first oil return solenoid valve and the second oil return solenoid valve.
3. The water-cooled flooded dual-cycle parallel system of claim 1 or 2, further comprising a condenser, wherein the condenser comprises a third refrigerant inlet, a fourth refrigerant inlet, a third gas outlet, and a fourth gas outlet, wherein the first gas outlet and the second gas outlet are respectively connected with the third refrigerant inlet and the fourth refrigerant inlet pipe, and the third gas outlet and the fourth gas outlet are respectively communicated with the first air suction port and the second air suction port.
4. The water-cooled flooded dual-cycle parallel system of claim 3, further comprising an evaporator, wherein the evaporator comprises a fifth refrigerant inlet, a sixth refrigerant inlet, a fifth gas outlet, and a sixth gas outlet, wherein the third gas outlet and the fourth gas outlet are respectively connected with the fifth refrigerant inlet and the sixth refrigerant inlet pipe, and the fifth gas outlet and the sixth gas outlet are respectively connected with the first air suction port and the second air suction port pipe.
5. The water-cooled flooded dual-cycle parallel system of claim 4, further comprising a first orifice plate, a second orifice plate, wherein the third gas outlet and the fourth gas outlet are respectively connected with a fifth refrigerant inlet and a sixth refrigerant inlet pipeline through the first orifice plate and the second orifice plate.
6. The oil return balancing method of the water-cooling flooded double-circulation parallel system is characterized by comprising the following steps of:
oil and refrigerant mixtures discharged from a first exhaust port and a second exhaust port of the first compressor and the second compressor are respectively separated by a first oil separator and a second oil separator, and then respectively generate a first gas refrigerant, a first oil, a second gas refrigerant and a second oil;
the first air refrigerant and the second air refrigerant are subjected to heat exchange and then respectively flow back into the first compressor and the second compressor through the first air suction port and the second air suction port to be recompressed;
the first oil and the second oil flow into the oil tank through the first oil inlet and the second oil inlet respectively;
the first oil and the second oil flowing into the oil tank are subjected to mixing balance and pressure equalizing in the oil tank, and the mixed balance and pressure equalizing oil flows back into the first compressor and the second compressor from the third oil outlet and the fourth oil outlet respectively through the first oil return port and the second oil return port so as to realize oil balance;
the top of the oil tank is additionally provided with a third exhaust port and a fourth exhaust port, so that refrigerant gas entering the oil tank along with the first oil and the second oil can be timely discharged and returned to the first air return port and the second air return port in the middle of the first compressor and the second compressor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910176752.6A CN109945540B (en) | 2019-03-08 | 2019-03-08 | Water-cooling full-liquid type double-circulation parallel system and oil return balancing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910176752.6A CN109945540B (en) | 2019-03-08 | 2019-03-08 | Water-cooling full-liquid type double-circulation parallel system and oil return balancing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109945540A CN109945540A (en) | 2019-06-28 |
| CN109945540B true CN109945540B (en) | 2024-02-13 |
Family
ID=67009417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910176752.6A Active CN109945540B (en) | 2019-03-08 | 2019-03-08 | Water-cooling full-liquid type double-circulation parallel system and oil return balancing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109945540B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353386A (en) * | 2021-12-10 | 2022-04-15 | 南京天加环境科技有限公司 | Oil balance system of multi-unit parallel unit of fluorine system and control method thereof |
| CN116642278B (en) * | 2023-04-19 | 2024-03-19 | 江森自控日立万宝空调(广州)有限公司 | Control method and device for electronic expansion valve and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201449079U (en) * | 2009-07-24 | 2010-05-05 | 珠海格力电器股份有限公司 | Screw flooded water chilling unit |
| CN101865553A (en) * | 2010-05-21 | 2010-10-20 | 北京中科华誉能源技术发展有限责任公司 | Flooded water source heat pump system with parallel scroll compressor |
| CN105157277A (en) * | 2014-06-03 | 2015-12-16 | 广东美的暖通设备有限公司 | Multi-connected split air conditioning system |
| CN107642921A (en) * | 2016-07-22 | 2018-01-30 | 约克（无锡）空调冷冻设备有限公司 | Oil balancing system and there is its multiscrew compressor parallel refrigeration unit |
| CN209783030U (en) * | 2019-03-08 | 2019-12-13 | 江森自控日立万宝空调(广州)有限公司 | Water-cooling flooded double-circulation parallel system |
-
2019
- 2019-03-08 CN CN201910176752.6A patent/CN109945540B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201449079U (en) * | 2009-07-24 | 2010-05-05 | 珠海格力电器股份有限公司 | Screw flooded water chilling unit |
| CN101865553A (en) * | 2010-05-21 | 2010-10-20 | 北京中科华誉能源技术发展有限责任公司 | Flooded water source heat pump system with parallel scroll compressor |
| CN105157277A (en) * | 2014-06-03 | 2015-12-16 | 广东美的暖通设备有限公司 | Multi-connected split air conditioning system |
| CN107642921A (en) * | 2016-07-22 | 2018-01-30 | 约克（无锡）空调冷冻设备有限公司 | Oil balancing system and there is its multiscrew compressor parallel refrigeration unit |
| CN209783030U (en) * | 2019-03-08 | 2019-12-13 | 江森自控日立万宝空调(广州)有限公司 | Water-cooling flooded double-circulation parallel system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109945540A (en) | 2019-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103851830B (en) | Oil balancing unit and refrigeration plant | |
| CN104848599B (en) | Air conditioning system and control method thereof | |
| CN107576090B (en) | Refrigerating system | |
| CN107560210B (en) | Refrigerating system | |
| CN109945540B (en) | Water-cooling full-liquid type double-circulation parallel system and oil return balancing method thereof | |
| CN101384863B (en) | Refrigerating system | |
| CN100507401C (en) | Capacity adjustable vortex compressor refrigeration system with mediate loop installed with ejector | |
| CN103994608A (en) | Microchannel heat exchanger and refrigerating plant | |
| CN209783030U (en) | Water-cooling flooded double-circulation parallel system | |
| CN108800393B (en) | Air conditioning system | |
| CN113405303B (en) | Refrigerator refrigerating system and refrigerator comprising same | |
| CN110608539A (en) | Cascade high-temperature heat pump system | |
| CN204141880U (en) | Air conditioning system | |
| CN109682104B (en) | Refrigerant circulation system and air conditioner | |
| CN101476793B (en) | Ultra-high temperature air conditioner cooling cycle system | |
| CN204665752U (en) | Air conditioning system | |
| CN201255527Y (en) | Large heating capacity multi-connection air conditioner heat pump unit | |
| CN214841173U (en) | Hydraulic module of double-four-way valve multi-connected unit | |
| CN210070283U (en) | Refrigerant circulation system and air conditioner | |
| CN103322712A (en) | Parallel compression refrigeration system | |
| CN111486609B (en) | Air conditioning system and control method | |
| CN109682105B (en) | Air Conditioning System | |
| CN203364497U (en) | Outdoor low-temperature vortex parallel connection compression condensing unit with functions of steam spraying and enthalpy increasing | |
| CN211290622U (en) | Cascade high-temperature heat pump system | |
| CN203364494U (en) | Parallel-connection compression refrigerating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |