CN201449079U - Screw flooded water chilling unit - Google Patents
Screw flooded water chilling unit Download PDFInfo
- Publication number
- CN201449079U CN201449079U CN2009200611584U CN200920061158U CN201449079U CN 201449079 U CN201449079 U CN 201449079U CN 2009200611584 U CN2009200611584 U CN 2009200611584U CN 200920061158 U CN200920061158 U CN 200920061158U CN 201449079 U CN201449079 U CN 201449079U
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- China
- Prior art keywords
- oil
- compressor
- oil return
- return pipe
- oily
- Prior art date
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- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000003507 refrigerant Substances 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 110
- 235000003642 hunger Nutrition 0.000 description 9
- 230000037351 starvation Effects 0.000 description 9
- 239000010725 compressor oil Substances 0.000 description 6
- 230000003134 recirculating effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010729 system oil Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
A screw flooded water chilling unit comprises a first compressor, a second compressor, an evaporator, a condenser, a throttling element and an oil separator, wherein the components are connected through a connecting pipe to form a refrigerant circulation loop; the oil level switches are arranged in oil cavities of the first compressor and the second compressor, the oil separator is further provided with an oil balance port, the air suction ends of the first compressor and the second compressor are communicated with the oil balance port through a first oil balance pipe and a second oil balance pipe respectively, the first oil balance pipe and the second oil balance pipe are provided with a first oil balance valve and a second oil balance valve respectively, and the oil level switches, the first oil balance valve and the second oil balance valve are electrically connected with a control circuit. The utility model discloses can effectively realize that the oil level of each compressor is balanced, improve the stability of system's work.
Description
Technical field
The utility model relates to a kind of screw flooded handpiece Water Chilling Units.
Background technology
The focus that more and more becomes domestic large-scale handpiece Water Chilling Units technical field of screw flooded handpiece Water Chilling Units, it is special after country has announced the energy-conservation evaluation criterion of new handpiece Water Chilling Units, the full-liquid type handpiece Water Chilling Units be because can significantly improve the Energy Efficiency Ratio of unit, becomes each large-scale central air-conditioning manufacturing firm competition focal point especially.In the present screw flooded handpiece Water Chilling Units, because individual difference and the pressure-drop in pipeline difference of double-compressor in running, it is unbalance to cause occurring oil level between the double-compressor most probably, and makes the compressor oil starvation in the system, influences the service behaviour of system.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, and a kind of screw flooded handpiece Water Chilling Units is provided, and the utility model can effectively be realized the oil level balance of each compressor, improves the stability of system works.
Its technical scheme is as follows:
A kind of screw flooded handpiece Water Chilling Units, comprise first compressor, second compressor, evaporimeter, condenser, restricting element and oil eliminator, be connected by tube connector between first compressor, second compressor, evaporimeter, condenser, restricting element and the oil eliminator and form refrigerant circulation loop, be provided with oil return opening on oil eliminator, the suction end of first compressor and second compressor communicates with oil return opening by oil return pipe respectively; In the oil pocket of first compressor and second compressor, be equipped with oil level switch, on oil eliminator, also be provided with oily balance port, the suction end of first compressor and second compressor communicates with oily balance port by first oil balance tube, second oil balance tube respectively, be respectively equipped with the first oily balanced valve and the second oily balanced valve on first oil balance tube, second oil balance tube, aforementioned oil level switch, the first oily balanced valve and the second oily balanced valve all are electrically connected with control circuit.
During work, when if two compressor oil levels all are higher than safe altitude, then the first oily balanced valve and the second oily balanced valve are closed, when a compressor oil starvation, when oil level is lower than lower safety limit, its oil level switch action, and corresponding oily balanced valve opened, increase oil starvation compressor recirculating oil quantity automatically, reduce rich oil compressor recirculating oil quantity, realize the dynamic equilibrium of double compressor system oil level, avoid compressor to influence the operate as normal of system owing to oil starvation.
The technical scheme of the further refinement of aforementioned techniques scheme can be:
Described oil return pipe comprises first oil return pipe and second oil return pipe, on first oil return pipe, second oil return pipe, be respectively equipped with first oil return valve, second oil return valve, this first oil return valve and second oil return valve all are electrically connected with described control circuit, described first oil return pipe, second oil return pipe respectively with the suction end of described first compressor, the corresponding connection of suction end of second compressor.Described oil return opening comprises first oil return opening and second oil return opening, first oil return pipe, second oil return pipe respectively with first oil return opening, the corresponding connection of second oil return opening.In system work process, the oil of separating can be stored in the oil eliminator, and is back in the compressor by the compressor air suction mouth under the effect of pressure reduction.
The height of described oil return opening is higher than the height of described oily balance port, particularly, described oily balance port is located at the bottom of described oil eliminator. when the unit operate as normal, first oil return valve and second oil return valve are opened, the first oily balanced valve and the second oily balanced valve are closed, and lubricating oil is stored in the oil eliminator and can enters respectively in first compressor and second compressor by first oil return pipe and second oil return pipe; When certain compressor oil starvation, its oil level switch moves and corresponding oily balanced valve is opened, and increases the recirculating oil quantity of oil starvation compressor, and makes the oil level of compressor return to normal condition, and after oil level was returned to normal condition, corresponding oily balanced solenoid valve was closed.
Also be provided with first air inlet, second air inlet and exhaust outlet on the described oil eliminator, described first compressor, the second compression mechanism high-pressure side communicate with first air inlet, second air inlet respectively, and the exhaust outlet of oil eliminator is connected with condenser and communicates.
In sum, the utility model has the advantages that: the utility model can effectively be realized the oil level balance of each compressor, improves the stability of system works.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated:
Fig. 1 is the structure chart of the utility model embodiment;
Description of reference numerals:
1, first compressor, 2, second compressor, 3, evaporimeter, 4, condenser, 5, restricting element, 6, oil eliminator, 7, first oil return opening, 8, second oil return opening, 9, first oil return pipe, 10, second oil return pipe, 11, first oil return valve, 9 valves, 12, second oil return valve, 13, oily balance port, 14, first oil balance tube, 15, second oil balance tube, 16, the first oily balanced valve, 17, the second oily balanced valve, 18, oil level switch, 19, first air inlet, 20, second air inlet, 21, exhaust outlet.
The specific embodiment
As shown in Figure 1, a kind of screw flooded handpiece Water Chilling Units, comprise first compressor 1, second compressor 2, evaporimeter 3, condenser 4, restricting element 5 and oil eliminator 6, be connected by tube connector between first compressor 1, second compressor 2, evaporimeter 3, condenser 4, restricting element 5 and the oil eliminator 6 and form refrigerant circulation loop, be provided with oil return opening on oil eliminator 6, the suction end of first compressor 1 and second compressor 2 communicates with oil return opening by oil return pipe respectively; In the oil pocket of first compressor 1 and second compressor 2, be equipped with oil level switch 18, on oil eliminator 6, also be provided with oily balance port 13, the suction end of first compressor 1 and second compressor 2 communicates with oily balance port 13 by first oil balance tube 14, second oil balance tube 15 respectively, be respectively equipped with the first oily balanced valve 16 and the second oily balanced valve 17 on first oil balance tube 14, second oil balance tube 15, aforementioned oil level switch 18, the first oily balanced valve 16 and the second oily balanced valve 17 all are electrically connected with control circuit.
Wherein, also be provided with first air inlet 19, second air inlet 20, exhaust outlet 21, first oil return opening 7 and second oil return opening 8 on the oil eliminator 6, first compressor 1, second compressor, 2 system high-pressure sides communicate with first air inlet 19, second air inlet 20 respectively, and the exhaust outlet 21 of oil eliminator 6 is connected with condenser 4 and communicates; Described oil return pipe comprises first oil return pipe 9 and second oil return pipe 10, at first oil return pipe 9, be respectively equipped with first oil return valve 11 on second oil return pipe 10, second oil return valve 12, this first oil return valve 11 and second oil return valve 12 all are electrically connected with control circuit, first oil return pipe 9, second oil return pipe 10 respectively with the suction end of first compressor 1, the suction end of second compressor 2 is corresponding to be connected, first oil return pipe 9, second oil return pipe 10 respectively with first oil return opening 7, second oil return opening 8 is corresponding to be connected, and oily balance port 13 is located at the bottom of oil eliminator 6 and is made the height of oil return opening be higher than the height of oily balance port 13.
During work, when if two compressor oil levels all are higher than safe altitude, then the first oily balanced valve 16 and the second oily balanced valve 17 are closed, when a compressor oil starvation, when oil level is lower than lower safety limit, its oil level switch 18 actions, and corresponding oily balanced valve opened, increase oil starvation compressor recirculating oil quantity automatically, reduce rich oil compressor recirculating oil quantity, realize the dynamic equilibrium of double compressor system oil level, avoid compressor to influence the operate as normal of system owing to oil starvation.
Only be specific embodiment of the utility model below, do not limit protection domain of the present utility model with this; Any replacement and the improvement done on the basis of not violating the utility model design all belong to protection domain of the present utility model.
Claims (6)
1. screw flooded handpiece Water Chilling Units, comprise first compressor, second compressor, evaporimeter, condenser, restricting element and oil eliminator, be connected by tube connector between first compressor, second compressor, evaporimeter, condenser, restricting element and the oil eliminator and form refrigerant circulation loop, be provided with oil return opening on oil eliminator, the suction end of first compressor and second compressor communicates with oil return opening by oil return pipe respectively; It is characterized in that, in the oil pocket of first compressor and second compressor, be equipped with oil level switch, on oil eliminator, also be provided with oily balance port, the suction end of first compressor and second compressor communicates with oily balance port by first oil balance tube, second oil balance tube respectively, be respectively equipped with the first oily balanced valve and the second oily balanced valve on first oil balance tube, second oil balance tube, aforementioned oil level switch, the first oily balanced valve and the second oily balanced valve all are electrically connected with control circuit.
2. screw flooded according to claim 1 handpiece Water Chilling Units, it is characterized in that, described oil return pipe comprises first oil return pipe and second oil return pipe, on first oil return pipe, second oil return pipe, be respectively equipped with first oil return valve, second oil return valve, this first oil return valve and second oil return valve all are electrically connected with described control circuit, first oil return pipe, second oil return pipe respectively with the suction end of described first compressor, the corresponding connection of suction end of second compressor.
3. as screw flooded handpiece Water Chilling Units as described in the claim 2, it is characterized in that described oil return opening comprises first oil return opening and second oil return opening, described first oil return pipe, second oil return pipe respectively with first oil return opening, the corresponding connection of second oil return opening.
4. as screw flooded handpiece Water Chilling Units as described in each in the claim 1 to 3, it is characterized in that the height of described oil return opening is higher than the height of described oily balance port.
5. as screw flooded handpiece Water Chilling Units as described in the claim 4, it is characterized in that described oily balance port is located at the bottom of described oil eliminator.
6. as screw flooded handpiece Water Chilling Units as described in each in the claim 1 to 3, it is characterized in that, also be provided with first air inlet, second air inlet and exhaust outlet on the described oil eliminator, described first compressor, the second compression mechanism high-pressure side communicate with first air inlet, second air inlet respectively, and the exhaust outlet of oil eliminator is connected with condenser and communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200611584U CN201449079U (en) | 2009-07-24 | 2009-07-24 | Screw flooded water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200611584U CN201449079U (en) | 2009-07-24 | 2009-07-24 | Screw flooded water chilling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201449079U true CN201449079U (en) | 2010-05-05 |
Family
ID=42553800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200611584U Expired - Lifetime CN201449079U (en) | 2009-07-24 | 2009-07-24 | Screw flooded water chilling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201449079U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939323A (en) * | 2014-04-25 | 2014-07-23 | 合肥通用机械研究院 | On-line measurement test device for oil circulation rate of refrigeration compressor controlled by parallel oil levels |
| CN105571184A (en) * | 2015-12-21 | 2016-05-11 | 重庆美的通用制冷设备有限公司 | Water chilling unit |
| CN106907883A (en) * | 2015-12-23 | 2017-06-30 | 宁波奥克斯电气股份有限公司 | A kind of handpiece Water Chilling Units are with parallel dual system gs-oil separator |
| CN107477920A (en) * | 2017-08-30 | 2017-12-15 | 重庆美的通用制冷设备有限公司 | Refrigeration system |
| CN109945540A (en) * | 2019-03-08 | 2019-06-28 | 江森自控日立万宝空调(广州)有限公司 | Water cooling full-liquid type Two-way Cycle parallel system and its oil return equalization methods |
| CN110388775A (en) * | 2019-07-25 | 2019-10-29 | 重庆美的通用制冷设备有限公司 | Water cooler and its control method and device |
| 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 |
-
2009
- 2009-07-24 CN CN2009200611584U patent/CN201449079U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939323A (en) * | 2014-04-25 | 2014-07-23 | 合肥通用机械研究院 | On-line measurement test device for oil circulation rate of refrigeration compressor controlled by parallel oil levels |
| CN103939323B (en) * | 2014-04-25 | 2016-01-20 | 合肥通用机械研究院 | On-line measurement test device for oil circulation rate of refrigeration compressor controlled by parallel oil levels |
| CN105571184A (en) * | 2015-12-21 | 2016-05-11 | 重庆美的通用制冷设备有限公司 | Water chilling unit |
| CN106907883A (en) * | 2015-12-23 | 2017-06-30 | 宁波奥克斯电气股份有限公司 | A kind of handpiece Water Chilling Units are with parallel dual system gs-oil separator |
| CN107477920A (en) * | 2017-08-30 | 2017-12-15 | 重庆美的通用制冷设备有限公司 | Refrigeration system |
| CN109945540A (en) * | 2019-03-08 | 2019-06-28 | 江森自控日立万宝空调(广州)有限公司 | Water cooling full-liquid type Two-way Cycle parallel system and its oil return equalization methods |
| CN109945540B (en) * | 2019-03-08 | 2024-02-13 | 江森自控日立万宝空调(广州)有限公司 | Water-cooling full-liquid type double-circulation parallel system and oil return balancing method thereof |
| CN110388775A (en) * | 2019-07-25 | 2019-10-29 | 重庆美的通用制冷设备有限公司 | Water cooler and its control method and device |
| 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 |
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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: 20100505 |
|
| CX01 | Expiry of patent term |