CN204902319U - Intersection return oil system of two compressors - Google Patents
Intersection return oil system of two compressors Download PDFInfo
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- CN204902319U CN204902319U CN201520458037.9U CN201520458037U CN204902319U CN 204902319 U CN204902319 U CN 204902319U CN 201520458037 U CN201520458037 U CN 201520458037U CN 204902319 U CN204902319 U CN 204902319U
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Abstract
Intersection return oil system of two compressors relates to the air conditioning technology field, and its structure includes the first compressor, second compressor, an oil separator, second separator ware and vapour and liquid separator. Through being connected first row of oil pipe with the second breathing pipe, the second is arranged oil pipe and is connected with first breathing pipe for refrigeration oil in the oil separator flows back to the second compressor, and the refrigeration oil in the 2nd oil separator flows back to the first compressor, and then forms alternately return oil system. Oil mass owing to holding in the compressor varies rather than the exhaust oil mass relation of being directly proportional, the oil mass that needs only in two compressors like this, and the compressor that the oil content is many can produce oil and pass through the few compressor of oil separator supply oil content by the multirow, and the oil content in two compressors is balanced, and then makes the refrigeration oil can distribute two compressors uniformly, prevents that scarce oily phenomenon from appearing in arbitrary compressor to improve the life of compressor, also increase whole refrigerating system's energy efficiency ratio.
Description
Technical field
The utility model relates to air-conditioning technical field, is specifically related to a kind of intersection oil return system of double-compressor.
Background technology
At present, the oil return process of single compressor refrigeration system is generally: the cold-producing medium of discharging from gas-liquid separator and the mixed working fluid of refrigerator oil enter compressor through the air intake duct of compressor, this mixed working fluid is discharged compressor by its blast pipe and is entered oil eliminator by compressor, in oil eliminator, most refrigerator oil is separated, refrigerator oil flow to the air intake duct of compressor by the oil return pipe bottom oil eliminator, and be finally back in compressor, remaining refrigerator oil and cold-producing medium together enter refrigeration system, again get back to compressor after circulating one week.
In existing double-compressor refrigeration system, the oil return system of above-mentioned single compressor is just carried out stack combinations simply by its oil return system.The oil of compressor all can get back to compressor in theory, but due to the difference of each compressor physique, the oil return situation of two compressors is impossible identical in actual motion, even if compressor runs with identical frequency, that is the cold-producing medium that two compressors obtain in refrigeration system is different from the amount of refrigerator oil, the result finally caused can pile with oil in the compressor that refrigerator oil recoverable amount is many, and another compressor may break down because of oil starvation because intrasystem oil is fewer and feweri.And the refrigerator oil whether maintaining abundance in compressor directly will have influence on the life-span of compressor, if by adding a large amount of refrigerator oils to solve compressor oil starvation problem in refrigeration system, too much refrigerator oil certainly will be there is by increase refrigeration system, and then reduce the Energy Efficiency Ratio of whole refrigeration system.
Utility model content
The purpose of this utility model is for deficiency of the prior art, and provides the intersection oil return system of oil mass, the double-compressor in raising compressor life-span in a kind of energy uniform distribution two compressor.
The purpose of this utility model is achieved through the following technical solutions:
A kind of intersection oil return system of double-compressor is provided, comprise the first compressor, second compressor, first oil eliminator, second oil eliminator and gas-liquid separator, described first compressor is connected with described first oil eliminator by the downtake pipe of described first compressor, described first compressor is connected with described gas-liquid separator by the first air intake duct of described first compressor, described second compressor is connected with described second oil eliminator by the second exhaust pipe of described second compressor, described second compressor is connected with described gas-liquid separator by the second air intake duct of described second compressor, described first oil eliminator is connected with the second air intake duct of described second compressor by the first row oil pipe of described first oil eliminator, described second oil eliminator is connected with the first air intake duct of described first compressor by the second row oil pipe of described second oil eliminator.
Wherein, described first row oil pipe is provided with the first capillary for reducing pressure by regulating flow.
Wherein, the first filter is provided with between described first oil eliminator and described first capillary.
Wherein, described second row oil pipe is provided with the second capillary for reducing pressure by regulating flow.
Wherein, the second filter is provided with between described second oil eliminator and described second capillary.
Wherein, described gas-liquid separator is provided with tube connector, and described tube connector is connected with the first air intake duct, the second air intake duct respectively by triple valve.
Wherein, described first compressor, the second compressor is frequency-changeable compressor.
The beneficial effects of the utility model:
The intersection oil return system of double-compressor of the present utility model, by the first row oil pipe of the first oil eliminator is connected with the second air intake duct of the first compressor, the second row oil pipe of the second oil eliminator is connected with the first air intake duct of the first compressor, the refrigeration oil in the first oil eliminator is made to be back to the second compressor, refrigeration oil in second oil eliminator is back to the first compressor, and then forms intersection oil return system.Because the oil mass of the oil mass held in compressor and its discharge is proportional, as long as the oil mass like this in two compressors is not etc., the compressor that oil content is many can be discharged oil more and supply the few compressor of oil content by oil eliminator, until the oil content in two compressors is balanced, and then make refrigeration oil can be assigned to two compressors equably, prevent arbitrary compressor from occurring petrol starvation, thus improve the service life of compressor, also increase the Energy Efficiency Ratio of whole refrigeration system.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the structural representation of the intersection oil return system of double-compressor of the present utility model.
Include in Fig. 1:
1-first compressor, 10-downtake pipe, 11-first air intake duct;
2-second compressor, 20-second exhaust pipe, 21-second air intake duct;
3-first oil eliminator, 30-first row oil pipe, 31-first capillary, 32-first filter, 33-first discharge pipe, 34-first check valve;
4-second oil eliminator, 40-second row oil pipe, 41-second capillary, 42-second filter, 43-second discharge pipe, 44-second check valve;
5-gas-liquid separator, 51-tube connector;
6-triple valve;
7-total air escape pipe;
8-blowdown pipe, 81-magnetic valve.
Detailed description of the invention
With the following Examples the utility model is further described.
The detailed description of the invention of the intersection oil return system of a kind of double-compressor of the present utility model, as shown in Figure 1, its structure comprises the first compressor 1, second compressor 2, first oil eliminator 3, second oil eliminator 4 and gas-liquid separator 5.
First compressor 1 is connected with the first oil eliminator 3 by the downtake pipe 10 of the first compressor 1, first compressor 1 is connected with gas-liquid separator 5 by the first air intake duct 11 of the first compressor 1, first oil eliminator 3 is connected with the second air intake duct 21 of the second compressor 2 by the first row oil pipe 30 of the first oil eliminator 3, thus makes the refrigeration oil in the first oil eliminator 3 be back to the second compressor 2.
Second compressor 2 is connected with the second oil eliminator 4 by the second exhaust pipe 20 of the second compressor 2, second compressor 2 is connected with gas-liquid separator 5 by the second air intake duct 21 of the second compressor 2, second oil eliminator 4 is connected with the first air intake duct 11 of the first compressor 1 by the second row oil pipe 40 of the second oil eliminator 4, thus makes the refrigeration oil in the second oil eliminator 4 be back to the first compressor 1.
The intersection oil return system of the double-compressor in this enforcement, when the first compressor 1 and/or the second compressor 2 frequency conversion, can oil mass in Fast-Balance first compressor 1, second compressor 2.
The utility model is by being connected the first row oil pipe 30 of the first oil eliminator 3 with the second air intake duct 21 of the first compressor 1, the second row oil pipe 40 of the second oil eliminator 4 is connected with the first air intake duct 11 of the first compressor 1, the refrigeration oil in the first oil eliminator 3 is made to be back to the second compressor 2, refrigeration oil in second oil eliminator 4 is back to the first compressor 1, forms intersection oil return system.Because the oil mass of the oil mass held in compressor and its discharge is proportional, as long as the oil mass like this in two compressors is not etc., the compressor that oil content is many can be discharged oil more and supply the few compressor of oil content by oil eliminator, until the oil content in two compressors is balanced, and then make refrigeration oil can be assigned to two compressors equably, the balance of the oil content in two compressors of guaranteeing the quality, prevent arbitrary compressor from occurring petrol starvation, thus improve the service life of compressor, also increase the Energy Efficiency Ratio of whole refrigeration system.
In the present embodiment, first row oil pipe 30 is provided with the first capillary 31 for reducing pressure by regulating flow, second row oil pipe 40 is also provided with the second capillary 41 for reducing pressure by regulating flow, and be provided with the first filter 32 between the first oil eliminator 3 and the first capillary 31, the second filter 42 is provided with between second oil eliminator 4 and the second capillary 41, in intersection oil return system, the setting of filter prevents impurity from blocking capillary.
In the present embodiment, for balancing the inspiratory capacity of the first air intake duct 11, second air intake duct 21, reduce the air-breathing energy consumption of compressor, gas-liquid separator 5 is provided with tube connector 51, and tube connector 51 is connected with the first air intake duct 11, second air intake duct 21 respectively by triple valve 6.
In whole refrigeration system, the discharge pipe of the first oil eliminator 3, second oil eliminator 4 all connects four-way change-over valve, wherein, the first oil eliminator 3 is connected with four-way change-over valve by the first discharge pipe 33, and the first discharge pipe 33 is provided with the first check valve 34 preventing back flow of refrigerant; Second oil eliminator 4 is connected with the four-way change-over valve in refrigeration system by the second discharge pipe 43, and the second discharge pipe 43 is provided with the second check valve 44 preventing back flow of refrigerant.First discharge pipe 33 accumulates total air escape pipe 7 with the second discharge pipe 43 and is connected with four-way change-over valve, total air escape pipe 7 and tube connector 51 are connected with blowdown pipe 8, blowdown pipe 8 is provided with magnetic valve 81, and the effect can playing polishing and equalizing pressure to compressor opened by magnetic valve 81.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection domain; although done to explain to the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (8)
1. the intersection oil return system of double-compressor, comprise the first compressor, second compressor, first oil eliminator, second oil eliminator and gas-liquid separator, described first compressor is connected with described first oil eliminator by the downtake pipe of described first compressor, described first compressor is connected with described gas-liquid separator by the first air intake duct of described first compressor, described second compressor is connected with described second oil eliminator by the second exhaust pipe of described second compressor, described second compressor is connected with described gas-liquid separator by the second air intake duct of described second compressor, it is characterized in that: described first oil eliminator is connected with the second air intake duct of described second compressor by the first row oil pipe of described first oil eliminator, described second oil eliminator is connected with the first air intake duct of described first compressor by the second row oil pipe of described second oil eliminator.
2. the intersection oil return system of double-compressor according to claim 1, is characterized in that: described first row oil pipe is provided with the first capillary for reducing pressure by regulating flow.
3. the intersection oil return system of double-compressor according to claim 2, is characterized in that: be provided with the first filter between described first oil eliminator and described first capillary.
4. the intersection oil return system of double-compressor according to claim 1, is characterized in that: described second row oil pipe is provided with the second capillary for reducing pressure by regulating flow.
5. the intersection oil return system of double-compressor according to claim 4, is characterized in that: be provided with the second filter between described second oil eliminator and described second capillary.
6. the intersection oil return system of double-compressor according to claim 1, it is characterized in that: described gas-liquid separator is provided with tube connector, described tube connector is connected with the first air intake duct, the second air intake duct respectively by triple valve.
7. the intersection oil return system of double-compressor according to claim 1, is characterized in that: described first oil eliminator is connected with the four-way change-over valve in refrigeration system by the first discharge pipe of described first oil eliminator.
8. the intersection oil return system of double-compressor according to claim 1, is characterized in that: described first compressor, the second compressor is frequency-changeable compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520458037.9U CN204902319U (en) | 2015-06-30 | 2015-06-30 | Intersection return oil system of two compressors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520458037.9U CN204902319U (en) | 2015-06-30 | 2015-06-30 | Intersection return oil system of two compressors |
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| CN204902319U true CN204902319U (en) | 2015-12-23 |
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| CN201520458037.9U Active CN204902319U (en) | 2015-06-30 | 2015-06-30 | Intersection return oil system of two compressors |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766371A (en) * | 2016-11-29 | 2017-05-31 | 珠海格力电器股份有限公司 | Two-stage compressor heat pump and oil return control system and control method thereof |
| CN107101419A (en) * | 2017-06-20 | 2017-08-29 | 珠海格力电器股份有限公司 | Compressor oil return system, oil return control method and double-compressor system |
| CN111256379A (en) * | 2018-11-30 | 2020-06-09 | 广东美芝精密制造有限公司 | Refrigerating device |
| CN115200262A (en) * | 2022-07-04 | 2022-10-18 | 湖北泰和电气有限公司 | Balanced oil return system of two compressors |
-
2015
- 2015-06-30 CN CN201520458037.9U patent/CN204902319U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766371A (en) * | 2016-11-29 | 2017-05-31 | 珠海格力电器股份有限公司 | Two-stage compressor heat pump and oil return control system and control method thereof |
| CN106766371B (en) * | 2016-11-29 | 2019-12-10 | 珠海格力电器股份有限公司 | two-stage compressor heat pump and oil return control system and control method thereof |
| CN107101419A (en) * | 2017-06-20 | 2017-08-29 | 珠海格力电器股份有限公司 | Compressor oil return system, oil return control method and double-compressor system |
| CN111256379A (en) * | 2018-11-30 | 2020-06-09 | 广东美芝精密制造有限公司 | Refrigerating device |
| CN115200262A (en) * | 2022-07-04 | 2022-10-18 | 湖北泰和电气有限公司 | Balanced oil return system of two compressors |
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