CN106766431B - Oil content system and air conditioning system - Google Patents
Oil content system and air conditioning system Download PDFInfo
- Publication number
- CN106766431B CN106766431B CN201710174550.9A CN201710174550A CN106766431B CN 106766431 B CN106766431 B CN 106766431B CN 201710174550 A CN201710174550 A CN 201710174550A CN 106766431 B CN106766431 B CN 106766431B
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- Prior art keywords
- oil
- pipe
- separator
- oil separator
- opening
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/16—Lubrication
Abstract
The application discloses an oil content system and an air conditioning system, which relate to the field of refrigeration and are used for optimizing the structure of an existing oil separator. The oil system comprises an oil separator, an oil inlet pipe, an oil outlet pipe and an oil return pipe; wherein, at least one part pipeline of the oil inlet pipe and the oil outlet pipe is close to the lower part of the oil separator, and the oil return pipe is arranged at the bottom of the oil separator. According to the oil separator structure provided by the technical scheme, the temperature of lubricating oil in the oil separator can be heated, and the phenomenon of blockage of an oil return capillary tube caused by too low temperature and too thick oil in the oil separator is prevented.
Description
Technical Field
The application relates to the field of refrigeration, in particular to an oil content system and an air conditioning system.
Background
The viscosity of the refrigerant lubricant increases rapidly with decreasing temperature. When the compressor in the refrigeration system works, part of lubricating oil can be discharged from the compressor along with the refrigerant and enters an oil separator (also called oil content for short). When the lubricating oil cannot be returned to the compressor from the oil separator in time, damage to the compressor may result.
In the refrigeration cycle, the compressor discharge gas is a high-temperature and high-pressure gaseous refrigerant and lubricating oil, and the discharged refrigerant and lubricating oil mixture are separated in an oil separator. During normal operation, the lubricating oil returns from the oil to the compressor through the oil return capillary. However, in a low-temperature environment system, when the system is started after long-time shutdown or is operated after defrosting is finished, a large amount of lubricating oil (possibly containing part of liquid refrigerant) is stored in the oil, and at the moment, the lubricating oil is at a very low temperature, and particularly the temperature of the lubricating oil at the bottom of the oil can be close to the ambient temperature.
The inventors found that at least the following problems exist in the prior art: at low temperature, the viscosity of the lubricating oil in the oil is particularly high, and an oil return capillary is blocked, so that the lubricating oil is difficult to return to the compressor through the oil return capillary, and the compressor is starved of oil.
Disclosure of Invention
One of the objects of the present application is to provide an oil content system and an air conditioning system for optimizing the structure of an existing oil separator so that lubricating oil in the oil separator can be smoothly returned to a compressor even in a low temperature state.
In order to achieve the above purpose, the present application provides the following technical solutions:
the application provides an oil content system, which comprises an oil separator, an oil content inlet pipe, an oil content outlet pipe and an oil content return pipe; and at least one part of pipelines of the oil inlet pipe and the oil outlet pipe is close to the lower part of the oil separator, and the oil return pipe is arranged at the bottom of the oil separator.
In an alternative embodiment, the oil separator is provided with a first opening, a second opening and a third opening;
the oil return pipe extends out of the oil separator through the third opening.
In an alternative embodiment, at least one of the first opening and the second opening is adjacent to a lower portion of the oil separator, and the third opening is adjacent to a bottom portion of the oil separator.
In an alternative embodiment, the first opening is proximate to a lower portion of the oil separator and the second opening is proximate to an upper portion of the oil separator.
In an alternative embodiment, the second opening is proximate to a lower portion of the oil separator and the first opening is proximate to an upper portion of the oil separator.
In an alternative embodiment, both the first opening and the second opening are proximate to the bottom of the oil separator.
In an alternative embodiment, the first opening and the second opening are both near an upper portion of the oil separator, and at least one of the oil inlet pipe and the oil outlet pipe has a portion bent to the lower portion of the oil separator.
In an alternative embodiment, the portion of the oil intake tube between the port inside the oil separator and the first opening is located entirely inside the oil separator or partially inside the oil separator.
In an alternative embodiment, the portion of the oil outlet tube between the port inside the oil separator and the second opening is located entirely inside the oil separator or partially inside the oil separator.
In an alternative embodiment, the oil intake tube comprises a curved tube.
In an alternative embodiment, the oil intake tube comprises a wave tube.
In an alternative embodiment, the oil outlet pipe comprises a curved pipe.
In an alternative embodiment, the oil outlet pipe comprises a wave-shaped pipe.
In an alternative embodiment, a portion of the conduit of at least one of the oil inlet pipe and the oil outlet pipe is near the bottom of the oil separator.
Another embodiment of the present application provides an air conditioning system, including the oil system provided in any one of the aspects of the present application.
In an alternative embodiment, the compressor of the air conditioning system is in communication with the oil inlet pipe, the four-way valve of the air conditioning system is in communication with the oil outlet pipe, and the oil return capillary of the air conditioning system is in communication with the oil return pipe.
Based on the technical scheme, the embodiment of the application at least has the following technical effects:
according to the oil separator structure provided by the technical scheme, a part of pipelines of at least one of the oil inlet pipe and the oil outlet pipe are close to the lower part of the oil separator. Because the gas temperature in the oil separation inlet pipe and the oil separation pipe is high, the temperature of lubricating oil in the oil separator can be heated, and the phenomenon of blockage of an oil return capillary caused by too low temperature and too thick oil in the oil separator is prevented.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic diagram of an air conditioning system to which an oil system according to an embodiment of the present application belongs;
FIG. 2 is a schematic diagram of a second structure of an oil system according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a third structure of an oil system according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a fourth configuration of an oil system according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a fifth configuration of an oil system according to an embodiment of the present application;
fig. 6 is a schematic diagram of a sixth structure of an oil system according to an embodiment of the present application.
Reference numerals: 1. an oil separator; 2. an oil separating inlet pipe; 3. an oil separation pipe; 4. an oil return pipe; 5. a compressor; 6. a four-way valve; 7. an oil return capillary; 8. an outdoor heat exchanger; 9. vapor separation; 10. an indoor heat exchanger; 11. a first opening; 12. a second opening; 13. a third opening; 14. a filter; 15. an oil return electromagnetic valve; 111. a gas valve; 112. a liquid valve; 113. an electronic expansion valve; 114. a liquid pipe; 115. and an air pipe.
Detailed Description
The technical scheme provided by the application is described in more detail below with reference to fig. 1 to 6.
Referring to fig. 1, an embodiment of the present application provides an oil system including an oil separator 1, an oil inlet pipe 2, an oil outlet pipe 3, and an oil return pipe 4. The oil separation inlet pipe 2, the oil outlet pipe 3, and the oil return pipe 4 are all attached to the oil separator 1. Wherein, at least one part of the pipelines of the oil inlet pipe 2 and the oil outlet pipe 3 is close to the lower part of the oil separator 1, and the oil return pipe 4 is arranged at the bottom of the oil separator 1.
The ports of the oil separation inlet pipe 2 and the oil separation pipe 3 located inside the oil separator 1 are both close to the top of the oil separator 1 so that the gas can normally flow in and out.
In the present embodiment, the lower portion of the oil separator 1 is oriented in the upper and lower directions when the oil separator 1 is in the use state, that is, in fig. 1. The position of the middle line of the oil separator 1 in the use state is defined as "upper" above the middle line and "lower" below the middle line.
Further, a part of the piping of at least one of the oil inlet pipe 2 and the oil outlet pipe 3 is near the bottom of the oil separator 1. The bottom portion refers to the region where the lowest point of the oil separator 1 is located when in the use state.
Referring to fig. 1, the oil separator 1 is optionally provided with a first opening 11, a second opening 12, and a third opening 13. Wherein the oil inlet pipe 2 extends into the oil separator 1 through the first opening 11, the oil outlet pipe 3 extends out of the oil separator 1 through the second opening 12, and the oil return pipe 4 extends out of the oil separator 1 through the third opening 13.
With the above-described configuration, the oil inlet pipe 2, the oil outlet pipe 3, and the oil return pipe 4 are connected to the oil separator 1 through the respective openings, and the oil inlet pipe 2, the oil outlet pipe 3, and the oil return pipe 4 are more conveniently provided.
Referring to fig. 2, 3, 5, and 6, as an alternative, at least one of the first opening 11 and the second opening 12 may be located near the lower portion of the oil separator 1, in particular near the bottom, i.e. may be located lower. The third opening 13 is near the bottom of the oil separator 1.
At least one of the first opening 11 and the second opening 12 is near the lower portion of the oil separator 1, specifically including the following three ways: referring to fig. 3 and 5, only the first opening 11 is near the lower portion of the oil separator 1; referring to fig. 2, only the second opening 12 is near the lower portion of the oil separator 1; referring to fig. 6, the first opening 11 and the second opening 12 are close to the lower portion of the oil separator 1 at the same time.
The first mode described above is described in detail below: the first opening 11 is near the lower part of the oil separator 1, in particular may be located at the bottom; the second opening 12 is near the upper part of the oil separator 1, in particular near the top of the oil separator 1, see in particular fig. 3 and 5. Of course, the second opening 12 may also be near the middle of the oil separator 1.
The second mode is described in detail below: the second opening 12 is near the lower part of the oil separator 1, and may be located at the bottom; the first opening 11 is near the upper part of the oil separator 1, and may be located at the top in particular, see fig. 2 in particular.
The third mode is described in detail below: both the first opening 11 and the second opening 12 are near the lower part of the oil separator 1, and may be located at the bottom in particular, see fig. 6.
Referring to fig. 1 and 4, as another alternative: both the first opening 11 and the second opening 12 are near the top of the oil separator 1, and at least one of the oil inlet pipe 2 and the oil outlet pipe 3 has a portion bent to the bottom of the oil separator 1.
The portion where at least one of the oil separation pipe 2 and the oil separation pipe 3 is bent to the bottom of the oil separator 1 means the following three cases:
first case: referring to fig. 4, the oil outlet pipe 3 has a portion bent to the bottom of the oil separator 1.
Second case: referring to fig. 1, an oil intake pipe 2 has a portion bent to the bottom of an oil separator 1.
Third case: both the oil separation inlet pipe 2 and the oil separation pipe 3 have portions bent to the bottom of the oil separator 1. This situation is not illustrated in the figures.
In the above various embodiments, the oil intake pipe 2 may be provided as follows: the portion of the oil separation pipe 2 between the port inside the oil separator 1 and the first opening 11 is located entirely inside the oil separator 1 or partially inside the oil separator 1. Fig. 5 shows the case where the first opening 11 is located at the lower portion and a part of the pipeline is located outside the oil distribution pipe 2, and it should be noted that the oil distribution pipe 2 in fig. 2 to 6 may also have a similar pipe structure.
In the above various embodiments, the oil intake pipe 2 may be provided as follows: the oil separating tube 2 comprises a curved tube. A curved pipe may be located at the lower portion of the oil separator 1 so as to better heat the oil in the oil separator 1.
Specifically, the oil intake pipe 2 includes a wave-shaped pipe. The wave-shaped pipe is preferably positioned at the lower part of the oil separator 1, so that the heating effect is better.
Among the various embodiments described above, the oil separation pipe 3 may be provided as follows: the portion of the oil outlet pipe 3 between the port inside the oil separator 1 and the second opening 12 is located entirely inside the oil separator 1 or partially inside the oil separator 1. Reference is made in particular to the structure of the oil distribution pipe 2 in fig. 5.
Among the various embodiments described above, the oil separation pipe 3 may be provided as follows: the oil outlet pipe 3 comprises a curved pipe. A curved pipe may be located at the lower portion of the oil separator 1 so as to better heat the oil in the oil separator 1.
Specifically, the oil outlet pipe 3 includes a wave-shaped pipe. The wave-shaped pipe is preferably positioned at the lower part of the oil separator 1, so that the heating effect is better.
The above embodiments, in which the oil separation refrigerant and the lubricating oil are not changed, can achieve the effect of ensuring the separation of the refrigerant and the lubricating oil in the oil separator and heating the lubricating oil temperature in the oil separator by changing the flow path of the oil separation pipe and/or the oil separation pipe.
In fig. 1, 3 and 5, the temperature of the lubricating oil in the oil separator is heated by adjusting the flow direction of the oil inlet pipe; FIGS. 2 and 4 are diagrams showing the temperature of lubricating oil in the oil separator by adjusting the flow direction of the oil separator outlet pipe; fig. 6 is a view showing the realization of heating of the temperature of the lubricating oil in the oil separator by adjusting the flow directions of the oil separation inlet pipe and the oil separation outlet pipe at the same time.
The oil inlet pipe or the oil outlet pipe of the oil separator passes through the inside of the oil separator, and the oil inlet pipe and the oil outlet pipe of the oil separator are both high-temperature and high-pressure gaseous refrigerants, so that lubricating oil in the oil can be heated, and the temperature of the lubricating oil in a low-temperature environment can be ensured.
Referring to fig. 1, an embodiment of the present application further provides an air conditioning system, including the oil system provided by any one of the embodiments of the present application.
In one particular air conditioning system, the connection may be as follows: the compressor 5 of the air conditioning system is communicated with the oil inlet pipe 2, the four-way valve 6 of the air conditioning system is communicated with the oil outlet pipe 3, and the oil return capillary tube 7 of the air conditioning system is communicated with the oil return pipe 4.
Referring to fig. 1, in the above-described air conditioning system, the connection relationship among the outdoor heat exchanger 8, the vapor separator 9, the indoor heat exchanger 10, the gas valve 111, the liquid valve 112, the electronic expansion valve 113, the liquid pipe 114, and the air pipe 115 is the same as in the conventional manner.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present application.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with others, which may not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. An oil system is characterized by comprising an oil separator (1), an oil inlet pipe (2), an oil outlet pipe (3) and an oil return pipe (4); wherein, a part of pipelines of the oil inlet pipe (2) is close to the lower part of the oil separator (1), and the oil return pipe (4) is arranged at the bottom of the oil separator (1);
the oil separator (1) is provided with a first opening (11), a second opening (12) and a third opening (13); wherein the oil inlet pipe (2) extends into the oil separator (1) through the first opening (11), the oil outlet pipe (3) extends out of the oil separator (1) through the second opening (12), and the oil return pipe (4) extends out of the oil separator (1) through the third opening (13);
the first opening (11) and the second opening (12) are both close to the upper part of the oil separator (1), and the oil separation pipe (2) has a portion bent to the lower part of the oil separator (1);
the part of the oil inlet pipe (2) between the port inside the oil separator (1) and the first opening (11) is located entirely inside the oil separator (1) or partially inside the oil separator (1).
2. An oil system according to claim 1, characterized in that the part of the oil outlet pipe (3) between the port inside the oil separator (1) and the second opening (12) is located entirely inside the oil separator (1) or partly inside the oil separator (1).
3. An oil system according to claim 1 or 2, characterized in that the oil inlet pipe (2) comprises a curved pipe.
4. An oil system according to claim 3, characterized in that the oil inlet pipe (2) comprises a wave-shaped pipe.
5. An oil system according to claim 1 or 2, characterized in that the oil outlet pipe (3) comprises a curved pipe.
6. An oil system according to claim 5, characterized in that the oil outlet pipe (3) comprises a wave-shaped pipe.
7. The oil system according to claim 1 or 2, characterized in that a part of the piping of at least one of the oil inlet pipe (2) and the oil outlet pipe (3) is near the bottom of the oil separator (1).
8. An air conditioning system comprising the oil system according to any one of claims 1 to 7.
9. An air conditioning system according to claim 8, characterized in that a compressor (5) of the air conditioning system communicates with the oil inlet pipe (2), a four-way valve (6) of the air conditioning system communicates with the oil outlet pipe (3), and an oil return capillary (7) of the air conditioning system communicates with the oil return pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174550.9A CN106766431B (en) | 2017-03-22 | 2017-03-22 | Oil content system and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174550.9A CN106766431B (en) | 2017-03-22 | 2017-03-22 | Oil content system and air conditioning system |
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| Publication Number | Publication Date |
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| CN106766431A CN106766431A (en) | 2017-05-31 |
| CN106766431B true CN106766431B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710174550.9A Active CN106766431B (en) | 2017-03-22 | 2017-03-22 | Oil content system and air conditioning system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949677B (en) * | 2017-03-23 | 2023-08-25 | 珠海格力电器股份有限公司 | Oil separator and air conditioner with same |
| CN107300272A (en) * | 2017-06-13 | 2017-10-27 | 珠海格力电器股份有限公司 | Condense unit and the air conditioner with it |
| CN110006193B (en) * | 2019-03-25 | 2020-05-22 | 珠海格力电器股份有限公司 | Air conditioning system and compressor oil temperature adjusting device used by same |
| CN110006194A (en) * | 2019-04-09 | 2019-07-12 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method with drop oil temperature and anti-hydrops function |
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