CN201396980Y - Flooded unit with ejection oil return circuit - Google Patents
Flooded unit with ejection oil return circuit Download PDFInfo
- Publication number
- CN201396980Y CN201396980Y CN200920119039XU CN200920119039U CN201396980Y CN 201396980 Y CN201396980 Y CN 201396980Y CN 200920119039X U CN200920119039X U CN 200920119039XU CN 200920119039 U CN200920119039 U CN 200920119039U CN 201396980 Y CN201396980 Y CN 201396980Y
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- oil return
- pipeline
- compressor
- oil
- injector
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Abstract
The utility model discloses a flooded unit with ejection oil return circuit, comprising a compressor (1), an oil-gas separator (2), a condenser (3), a throttle element (5) and an evaporator (7) whichare connected in turn to form a circuit; wherein the unit further comprises an ejection oil return circuit provided with an ejector (6), the ejection oil return circuit comprises three pipelines, theinput end of the first pipeline is connected with the evaporator (7) while the output end is connected with the ejector (6), the input end of the second pipeline is connected with the ejector (6) while the output end is connected with the compressor (1), and the output end of the third pipeline is connected with the ejector (6) while the input end is communicated with the oil-gas separator (2). The ejector of the ejection oil return circuit utilizes the high-pressure liquid oil discharged from the oil-gas separator as the power source for ejection, thereby preventing the cooling capacity fromreduction and improving the reliability of the unit.
Description
Technical field
The utility model relates to the refrigeration and air-conditioning technical field, specifically is a kind of full-liquid type unit with injection oil return loop that is used for refrigeration air-conditioner.
Background technology
Country has announced the energy-conservation evaluation criterion of a series of product, comprising the energy-conservation evaluation criterion of handpiece Water Chilling Units for realizing energy-saving and cost-reducing target.At present, for improving the Energy Efficiency Ratio of product, more and more enterprises adopts the flooded evaporator technology in large-scale handpiece Water Chilling Units in the industry.For a long time, flooded evaporator technology ubiquity the problem of compressor oil return, be that the interior lubricating oil of compressor can be taken compressor out of from blast pipe along with refrigerant, will certainly cause the lubricating oil meeting phenomenon less and less in the compressor like this, thereby cause the damage of compressor.
For guaranteeing the reliability service of compressible machine, a lot of producers have all adopted the unit with injection oil return loop, it comprises compressor, gs-oil separator, condenser, restricting element, the evaporimeter that connects and form the loop successively, also comprise injection oil return loop in the described unit, described injection oil return loop comprises a pipeline and a pipeline of drawing from described evaporimeter of drawing from described condenser, and two described pipelines are connected in described compressor by pipeline after being summarized in injector again.But this structure exists following shortcoming: because the injection oil return loop that these producers adopt all has a key equipment---injector, and injector most employing gases at high pressure and highly pressurised liquid are as the power source of injection, because gases at high pressure and highly pressurised liquid have all taken a part of cold-producing medium, so just waste the energy of a part of compressor, thereby reduced refrigerating capacity.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of energy of saving compressor can guarantee the full-liquid type unit with injection oil return loop that the refrigerating capacity of air-conditioning can not reduce.
For solving the problems of the technologies described above, a kind of full-liquid type unit that the utility model provides with injection oil return loop, comprise the compressor that connects and form the loop successively, gs-oil separator, condenser, restricting element, evaporimeter, also comprise the injection oil return loop that is provided with injector in the described unit, described injection oil return loop is three pipelines, article one, the input of pipeline is connected with evaporimeter, output is connected with injector, the input of second pipeline is connected with injector, output is connected with compressor, article three, the output of pipeline is connected with injector, and the input of described the 3rd pipeline is communicated with gs-oil separator.
After adopting above structure, the utility model compared with prior art, have the following advantages: because the input of the 3rd pipeline is communicated with gs-oil separator, be that injector in the injection oil return loop adopts the highly pressurised liquid oil the come out power source as injection from gs-oil separator, can save independent in a prior art injection oil return loop, the energy of compressor is still less saved better in the loop that makes whole unit, thereby the refrigerating capacity that guarantees air-conditioning can not descend, and unit is more reliable.
As improvement, describedly from the pipeline that evaporimeter is drawn, be provided with a magnetic valve.After adopting this structure, make injection oil return loop have the characteristic of intermittent work, thus the oil return of system when having guaranteed the sub-load bad working environments more.
Description of drawings
Shown in Figure 1 is the connection operation schematic diagram of prior art full-liquid type handpiece Water Chilling Units;
Shown in Figure 2 is the connection operation schematic diagram that the utlity model has the full-liquid type unit embodiment one in injection oil return loop;
Shown in Figure 3 is the connection operation schematic diagram that the utlity model has the full-liquid type unit embodiment two in injection oil return loop.
Wherein:
Prior art: 1 ', compressor; 2 ', gs-oil separator; 3 ', condenser; 4 ', device for drying and filtering; 5 ', restricting element; 6 ', injector; 7 ', evaporimeter; 8 ', magnetic valve.
The utility model: 1, compressor; 2, gs-oil separator; 3, condenser; 4, device for drying and filtering; 5, restricting element; 6, injector; 7, evaporimeter; 8, magnetic valve.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
Connection by prior art full-liquid type handpiece Water Chilling Units shown in Figure 1 moves schematic diagram as can be known, it comprises compressor 1 ', gs-oil separator 2 ', condenser 3 ', restricting element 5 ', the evaporimeter 7 ' that connects and form the loop successively, also comprises the injection oil return loop with injector 6 ' in the described unit.Described injection oil return loop comprises a pipeline and a pipeline of drawing from evaporimeter 7 ' of drawing from condenser 2 ', is connected in compressor 1 ' by pipeline again after described two pipelines are summarized in injector 6 '.Therefore, injector 6 ' adopts the highly pressurised liquid that the comes out power source as injection from condenser 3 '.The pipeline of drawing, be provided with a magnetic valve 8 ' from described evaporimeter 7 '.
Connection by the full-liquid type unit embodiment one that the utlity model has injection oil return loop shown in Figure 2 moves schematic diagram as can be known, it comprises the compressor 1 that connects and form the loop successively, gs-oil separator 2, condenser 3, restricting element 5, evaporimeter 7, also comprise the injection oil return loop that is provided with injector 6 in the described unit, described injection oil return loop is three pipelines, article one, the input of pipeline is connected with evaporimeter 7, output is connected with injector 6, the input of second pipeline is connected with injector 6, output is connected with compressor 1, article three, the output of pipeline is connected with injector 6, and the input of described the 3rd pipeline is communicated with gs-oil separator 2.
In the described in the drawings injection oil return loop, it comprises a pipeline and a pipeline of drawing from evaporimeter 7 of drawing from gs-oil separator 2, and two pipelines are connected on the compressor 1 by pipeline after being summarized in injector 6 again.Unit has adopted hydraulic oil from gs-oil separator 2 as the power source of injection, does not have extra cold-producing medium as the injection source, does not therefore have the refrigerating capacity loss of this part.
Air current flow direction when as shown in the figure, arrow is represented unit work.In the time of in working order, the high temperature and high pressure gas that comes out from compressor 1 flows through gs-oil separator 2 and carries out Oil-gas Separation, gas after the separation enters condenser 3, in condenser 3, be condensed into highly pressurised liquid, through filtration, the desiccation of device for drying and filtering 4, become in low-pressure gas and the low pressure liquid inflow evaporator 7 through behind the restricting element 5 again.In evaporimeter 7, cold-producing medium is evaporated, and the gas after the evaporation is inhaled into compressor 1.Oil in the gs-oil separator 2 is got back to compressor 1 through custom-designed injector 6, thereby has guaranteed the oil return of system.
Connection by the full-liquid type unit embodiment two that the utlity model has injection oil return loop shown in Figure 3 moves schematic diagram as can be known, it comprises the compressor 1 that connects and form the loop successively, gs-oil separator 2, condenser 3, restricting element 5, evaporimeter 7, also comprise the injection oil return loop that is provided with injector 6 in the described unit, described injection oil return loop is three pipelines, article one, the input of pipeline is connected with evaporimeter 7, output is connected with injector 6, the input of second pipeline is connected with injector 6, output is connected with compressor 1, article three, the output of pipeline is connected with injector 6, and the input of described the 3rd pipeline is communicated with gs-oil separator 2.Describedly be provided with a magnetic valve 8 from the pipeline that evaporimeter 7 is drawn, this magnetic valve 8 is intermittent work just.
In the described in the drawings injection oil return loop, it comprises a pipeline and a pipeline of drawing from evaporimeter 7 of drawing from gs-oil separator 2, and two pipelines are connected on the compressor 1 by pipeline after being summarized in injector 6 again.It is the power source of injection that unit has adopted the hydraulic oil from gs-oil separator 2 to use, and does not have extra cold-producing medium as the injection source, does not therefore have the refrigerating capacity loss of this part.
When injection circuit electromagnetic valve 8 cut out, this loop just became the oil return loop of gs-oil separator 2; When injection circuit electromagnetic valve 8 is opened, it is the injection oil return loop in injection source that this loop just becomes with oil, that is to say, the hydraulic oil liquid that comes out from gs-oil separator 2 is through custom-designed injector 6, the suction effect is drawn in generation, under powerful absorption affinity effect in the evaporimeter the higher liquid of oil concentration some attracted in the injector 6 through behind filter, after the hydraulic oil liquid that produces injection mixes, get back to compressor 1, thus the oil return of system when having guaranteed the sub-load bad working environments.
Air current flow direction when as shown in the figure, arrow is represented unit work.In the time of in working order, the high temperature and high pressure gas that comes out from compressor 1 flows through gs-oil separator 2 and carries out Oil-gas Separation, gas after the separation enters condenser 3, in condenser 3, be condensed into highly pressurised liquid, through filtration, the desiccation of device for drying and filtering 4, become in low-pressure gas and the low pressure liquid inflow evaporator 7 through behind the restricting element 5 again.In evaporimeter 7, cold-producing medium is evaporated, and the gas after the evaporation is inhaled into compressor 1.Oil in the gs-oil separator 2 is got back to compressor 1 through custom-designed injector 6, thereby has guaranteed the oil return of system.
The utility model is not limited to above-described structure, and it also has other distortion and change, and for example, the use of condenser can be water side condenser or wind side condenser; The practicality of restricting element can be orifice plate, electric expansion valve or heating power expansion valve etc.; In whole unit, for the convenience of overhauling or controlling can also be set up Hydraulic Elements such as some ball valves, angle valve, check valve in the loop.More than these variations all fall within the utility model protection domain.
Claims (2)
1, a kind of full-liquid type unit with injection oil return loop, comprise the compressor (1) that connects and form the loop successively, gs-oil separator (2), condenser (3), restricting element (5), evaporimeter (7), also comprise the injection oil return loop that is provided with injector (6) in the described unit, described injection oil return loop is three pipelines, article one, the input of pipeline is connected with evaporimeter (7), output is connected with injector (6), the input of second pipeline is connected with injector (6), output is connected with compressor (1), article three, the output of pipeline is connected with injector (6), it is characterized in that: the input of described the 3rd pipeline is communicated with gs-oil separator (2).
2, the full-liquid type unit with injection oil return loop according to claim 1 is characterized in that: describedly be provided with a magnetic valve (8) from the pipeline that evaporimeter (7) is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920119039XU CN201396980Y (en) | 2009-04-29 | 2009-04-29 | Flooded unit with ejection oil return circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920119039XU CN201396980Y (en) | 2009-04-29 | 2009-04-29 | Flooded unit with ejection oil return circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396980Y true CN201396980Y (en) | 2010-02-03 |
Family
ID=41619498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920119039XU Ceased CN201396980Y (en) | 2009-04-29 | 2009-04-29 | Flooded unit with ejection oil return circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396980Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180541A (en) * | 2015-10-14 | 2015-12-23 | 珠海格力电器股份有限公司 | Injection oil return control method and device for air-conditioning system and air-conditioning system |
| CN107504731A (en) * | 2017-07-19 | 2017-12-22 | 珠海格力电器股份有限公司 | Refrigeration unit oil return component and its control method |
| WO2018082347A1 (en) * | 2016-11-02 | 2018-05-11 | 重庆美的通用制冷设备有限公司 | Water chilling unit |
| CN108954916A (en) * | 2018-06-15 | 2018-12-07 | 重庆美的通用制冷设备有限公司 | Water cooler and its method for controlling oil return |
| CN109442777A (en) * | 2018-11-30 | 2019-03-08 | 珠海格力电器股份有限公司 | Air-conditioner set |
-
2009
- 2009-04-29 CN CN200920119039XU patent/CN201396980Y/en not_active Ceased
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180541A (en) * | 2015-10-14 | 2015-12-23 | 珠海格力电器股份有限公司 | Injection oil return control method and device for air-conditioning system and air-conditioning system |
| WO2018082347A1 (en) * | 2016-11-02 | 2018-05-11 | 重庆美的通用制冷设备有限公司 | Water chilling unit |
| CN107504731A (en) * | 2017-07-19 | 2017-12-22 | 珠海格力电器股份有限公司 | Refrigeration unit oil return component and its control method |
| CN108954916A (en) * | 2018-06-15 | 2018-12-07 | 重庆美的通用制冷设备有限公司 | Water cooler and its method for controlling oil return |
| CN109442777A (en) * | 2018-11-30 | 2019-03-08 | 珠海格力电器股份有限公司 | Air-conditioner set |
| CN109442777B (en) * | 2018-11-30 | 2024-04-09 | 珠海格力电器股份有限公司 | Air conditioning unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo AUX Electric Co., Ltd. |
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| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20160826 Decision number of declaring invalidation: 29870 Granted publication date: 20100203 |
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| IW01 | Full invalidation of patent right |