CN211424749U - Oil return device, refrigerant system, centrifugal chiller and centrifugal heat pump - Google Patents
Oil return device, refrigerant system, centrifugal chiller and centrifugal heat pump Download PDFInfo
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- CN211424749U CN211424749U CN201922289684.2U CN201922289684U CN211424749U CN 211424749 U CN211424749 U CN 211424749U CN 201922289684 U CN201922289684 U CN 201922289684U CN 211424749 U CN211424749 U CN 211424749U
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Abstract
The utility model discloses an oil return device, a refrigerant system, a centrifugal chiller and a centrifugal heat pump, wherein the oil return device is arranged in a refrigerant circulation pipeline, and the oil return device comprises a first inner cavity and a second inner cavity which are arranged at intervals; the first inner cavity is communicated with an exhaust pipe of the compressor through a pipeline, the first inner cavity is communicated with a pipeline of the evaporator through a pipeline, and the first inner cavity is communicated with an air suction port of the compressor through a pipeline; the second inner cavity forms a loop with a lubricating oil pipeline of the compressor through a pipeline; the first inner cavity is communicated with the second inner cavity through a communicating pipe, and lubricating oil in the first inner cavity enters the second inner cavity through the communicating pipe. The utility model discloses an oil return device, refrigerant system, centrifugal chiller and centrifugal heat pump can solve the problem that refrigerant system can't prevent to run oil, difficult oil return among the prior art effectively.
Description
Technical Field
The utility model relates to a refrigeration technology field particularly, relates to an oil return device, refrigerant system, centrifugal chiller and centrifugal heat pump.
Background
In the prior art, the system operation pressure difference (condensing pressure-evaporating pressure) of a refrigerant system (such as a refrigerant system in a heat pump unit or a water chilling unit) is small, so that oil leakage and oil return difficulty are caused in the unit operation process, oil leakage is difficult to effectively prevent by common oil return measures, and the unit operation is not facilitated.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an in provide an oil returning device, refrigerant system, centrifugal chiller and centrifugal heat pump set to the problem of refrigerant system can't prevent to run oil, difficult oil return among the solution prior art.
In order to achieve the purpose, the utility model provides an oil return device which is arranged in a refrigerant circulation pipeline, wherein the oil return device internally comprises a first inner cavity and a second inner cavity which are arranged at intervals; the first inner cavity is communicated with an exhaust pipe of the compressor through a pipeline, the first inner cavity is communicated with a pipeline of the evaporator through a pipeline, and the first inner cavity is communicated with an air suction port of the compressor through a pipeline; the second inner cavity forms a loop with a lubricating oil pipeline of the compressor through a pipeline; the first inner cavity is communicated with the second inner cavity through a communicating pipe, and lubricating oil in the first inner cavity enters the second inner cavity through the communicating pipe.
Further, the second cavity is located at the bottom of the first cavity.
Furthermore, the oil return device also comprises a third inner cavity which is arranged adjacent to the first inner cavity, the third inner cavity is communicated with an exhaust pipe of the compressor through a pipeline, and the third inner cavity is communicated with an air suction port of the compressor through a pipeline.
Further, the third cavity is separated from the first cavity by a heat exchange plate.
Further, the third lumen is located between the first lumen and the second lumen.
Further, the communicating pipe is a pipeline structure with an external oil return device or a pipeline with an internal oil return device.
According to another aspect of the utility model, a refrigerant system is provided, including foretell oil return device.
Further, the system comprises a compressor and an evaporator on a refrigerant circulating pipeline; the exhaust pipe of the compressor is communicated with the first inner cavity of the oil return device, the air suction port of the compressor is communicated with the first inner cavity, the pipeline of the evaporator is communicated with the first inner cavity, and the lubricating oil pipeline of the compressor is communicated with the second inner cavity of the oil return device to form a loop.
Furthermore, the oil return device also comprises a third inner cavity which is arranged adjacent to the first inner cavity, the third inner cavity is communicated with an exhaust pipe of the compressor through a pipeline, and the third inner cavity is communicated with an air suction port of the compressor through a pipeline.
Further, the refrigerant used in the refrigerant system is refrigerant R1233zd (E).
According to another aspect of the present invention, a centrifugal chiller is provided, comprising the above-mentioned refrigerant system.
According to another aspect of the utility model, a centrifugal heat pump unit is provided, including foretell refrigerant system.
Utilize compressor blast pipe and evaporimeter pressure differential to draw and penetrate the oil return, the blast pipe steam bypass of compressor is to first inner chamber, it is the mixed liquid of oil and refrigerant to obtain in the first inner chamber, the mixed liquid is through absorbing high-temperature gas heat in the epicoele, the refrigerant absorbs the heat phase change and becomes gaseous state refrigerant, remaining lubricating oil is retrieved to the second inner chamber through communicating pipe, oil return device makes the refrigerant phase change become gaseous state through above-mentioned structure, lubricating oil can be purified, oil return device sets up in refrigerant circulation pipeline in order to form a lubricating oil recovery purification system, the phenomenon of unit oil leakage and bearing wearing and tearing has been prevented effectively takes place, and reduce the area of liquid of breathing in addition, realize the stable and reliable operation of unit.
Drawings
Fig. 1 is a schematic structural diagram of an oil return device according to an embodiment of the present invention.
Fig. 2 is a schematic view illustrating a pipeline communication of a refrigerant system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, which should not be construed as limiting the invention.
Referring to fig. 1, according to an embodiment of the present invention, an oil return device is provided, which is disposed in a refrigerant circulation pipeline, and the oil return device includes a first inner cavity 10 and a second inner cavity 20 disposed at intervals. The first inner cavity 10 is communicated with an exhaust pipe of the compressor through a pipeline, the first inner cavity 10 is communicated with a pipeline of the evaporator through a pipeline, and the first inner cavity 10 is communicated with an air suction port of the compressor through a pipeline; the second cavity 20 is in circuit with the lubrication oil line of the compressor through a line. The first inner chamber 10 is communicated with the second inner chamber 20 through the communicating pipe 40, the lubricating oil in the first inner chamber 10 enters the second inner chamber 20 through the communicating pipe 40, and the relationship of the communicated pipelines can be seen in a schematic diagram of fig. 2 applied to a refrigerant system.
The oil return device has the advantages that the oil return is induced by utilizing the pressure difference between the exhaust pipe of the compressor and the evaporator, hot gas of the exhaust pipe of the compressor bypasses the first inner cavity 10, mixed liquid of oil and a refrigerant is obtained in the first inner cavity 10, the mixed liquid in the upper cavity absorbs heat of high-temperature gas, the refrigerant absorbs heat and changes phase into a gaseous refrigerant, the rest lubricating oil is recycled to the second inner cavity 20 through the communicating pipe 40, the oil return device enables the refrigerant to change phase into a gaseous state through the structure, the lubricating oil is purified, the oil return device is arranged in a refrigerant circulating pipeline to form a lubricating oil recycling and purifying system, oil leakage of a unit and bearing abrasion are effectively prevented, air suction and liquid carrying are reduced, and stable and reliable operation.
Preferably, the second inner cavity 20 of the oil return device is located at the bottom of the first inner cavity 10. The lubricant oil can be directly introduced into the second inner chamber 20 through the communicating tube 40 by gravity.
The oil return device also comprises a third inner cavity 30, the third inner cavity 30 is adjacent to the first inner cavity 10, the third inner cavity 30 is communicated with an exhaust pipe of the compressor through a pipeline, and the third inner cavity 30 is communicated with an air suction port of the compressor through a pipeline. The high-temperature high-pressure gas which is bypassed by the exhaust port of the compressor in the third inner cavity 30, and the third inner cavity 30 is used for providing heat for the first inner cavity 10, so that the mixed liquid in the first inner cavity 10 can be better separated, the refrigerant absorbs heat and is changed into gaseous refrigerant, and the purification effect of the lubricating oil is further improved.
It is further preferred that the third cavity 30 is separated from the first cavity 10 by a heat exchange plate. The mixed liquid in the first inner cavity 10 absorbs the heat of the high-temperature gas in the third inner cavity 30 through the heat exchange plate, the refrigerant absorbs heat and changes phase into gaseous refrigerant, and the lubricating oil is recycled to the second inner cavity 20 through the communicating pipe 40; the gaseous refrigerant in the first cavity 10 and the refrigerant in the third cavity 30 are recycled to the suction port of the compressor. This design can utilize system's pressure differential to draw on the one hand and penetrate the oil return, and on the other hand can utilize the hot gas separation purification lubricating oil of compressor blast pipe, need not to increase extra energy device. The flow direction sequence of the lubricating oil in the refrigerant system through the oil return device is as follows: evaporator → first lumen 10 → second lumen 20 → compressor → second lumen 20 (circulation circuit).
In this embodiment, the third inner cavity 30 of the oil return device is located between the first inner cavity 10 and the second inner cavity 20. The oil return device is made into an oil tank structure in this embodiment, a plurality of cavities are formed inside the oil tank body through internal partition plates, and in the direction from top to bottom, the first inner cavity 10, the third inner cavity 30 and the second inner cavity 20 are sequentially overlapped to form an upper, middle and lower three-layer cavity structure.
The communication pipe 40 is a pipeline structure (plastic oil pipe) with an external oil return device or a pipeline (pipeline structure formed by the oil tank body) with an internal oil return device.
The utility model also provides an embodiment of refrigerant system, including the oil returning device of above-mentioned embodiment.
Referring to fig. 2, the refrigerant system includes a compressor 50 and an evaporator 60 on a refrigerant circulation line; the exhaust pipe of the compressor 50 is communicated with the first inner cavity of the oil return device, the air suction port of the compressor 50 is communicated with the first inner cavity, the pipeline of the evaporator 60 is communicated with the first inner cavity, and the lubricating oil pipeline of the compressor 50 is communicated with the second inner cavity of the oil return device to form a loop.
In the refrigerant system, a conventional compression refrigeration cycle is formed by a compressor 50, an evaporator 60, a condenser 70 and a throttling device 80, and high-temperature and high-pressure gas discharged by a compressor exhaust pipe in the refrigeration cycle and an oil-refrigerant mixture at the evaporator side are jointly returned to an oil return device for separation and purification.
The oil return device also comprises a third inner cavity which is arranged adjacent to the first inner cavity, the third inner cavity is communicated with an exhaust pipe of the compressor 50 through a pipeline, and the third inner cavity is communicated with an air suction port of the compressor 50 through a pipeline.
The refrigerant system of the embodiment utilizes the pressure difference between the compressor exhaust pipe and the evaporator to inject the return oil, and the mixture of the oil and the refrigerant and the purified lubricating oil are heated by hot gas of the compressor exhaust pipe to form a brand-new oil recovery and purification system, so that oil leakage and bearing abrasion of a unit are prevented, air suction and liquid carrying are reduced, energy is saved, effectiveness is realized, and stable and reliable operation of the unit is realized.
In particular, the refrigerant used in the refrigerant system is refrigerant R1233zd (E). With the elimination of high GWP refrigerants in various countries in the world, the refrigerant R134a is gradually eliminated. The negative pressure novel refrigerant R1233zd (E) is superior to other refrigerants in safety and environmental comprehensive indexes, has superior performance, and becomes the optimal scheme of the current environment-friendly refrigerant. The negative-pressure new refrigerant unit system using the negative-pressure new refrigerant R1233zd (E) has small operation pressure difference (condensing pressure-evaporating pressure), oil is easy to leak and difficult to return in the operation process, oil leakage is difficult to effectively prevent by common oil return measures, and the unit operation is not facilitated. And the utility model provides a refrigerant system is fit for using the new refrigerant unit system of negative pressure of the novel refrigerant R1233zd (E) of negative pressure, the utility model discloses a to the oil returning device and the refrigerant system that the novel refrigerant R1233zd (E) of above-mentioned negative pressure carries out research and development specially, the utility model discloses a refrigerant system can prevent effectively that the unit from running oil, reduces bearing wear, reduces the suction and takes liquid, and is energy-conserving effective, realizes the stable and reliable operation of unit.
The utility model also provides an embodiment of centrifugal cooling water set, centrifugal cooling water set include foretell refrigerant system.
The utility model also provides an embodiment of centrifugal heat pump set, centrifugal heat pump set includes foretell refrigerant system.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
Of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and decorations can be made without departing from the basic principle of the present invention, and these modifications and decorations are also considered to be within the scope of the present invention.
Claims (12)
1. An oil return device is arranged in a refrigerant circulating pipeline, and is characterized in that the oil return device internally comprises a first inner cavity (10) and a second inner cavity (20) which are arranged at intervals;
the first inner cavity (10) is communicated with an exhaust pipe of the compressor through a pipeline, the first inner cavity (10) is communicated with a pipeline of the evaporator through a pipeline, and the first inner cavity (10) is communicated with a suction port of the compressor through a pipeline;
the second inner cavity (20) forms a loop with a lubricating oil pipeline of the compressor through a pipeline;
the first inner cavity (10) is communicated with the second inner cavity (20) through a communicating pipe (40), and lubricating oil in the first inner cavity (10) enters the second inner cavity (20) through the communicating pipe (40).
2. The oil return device according to claim 1, characterized in that the second inner chamber (20) is located at the bottom of the first inner chamber (10).
3. The oil return device according to claim 1, characterized in that the oil return device further comprises a third inner cavity (30) therein, the third inner cavity (30) is disposed adjacent to the first inner cavity (10), the third inner cavity (30) is communicated with a discharge pipe of the compressor through a pipeline, and the third inner cavity (30) is communicated with a suction port of the compressor through a pipeline.
4. Oil return device according to claim 3, characterized in that the third interior (30) is separated from the first interior (10) by a heat exchange plate.
5. Oil return device according to claim 3, characterized in that the third inner chamber (30) is located between the first inner chamber (10) and the second inner chamber (20).
6. The oil return device according to claim 1, wherein the communication pipe (40) is a pipeline structure external to the oil return device or a pipeline internal to the oil return device.
7. A refrigerant system, characterized in that, comprising the oil return device of any one of claims 1 to 6.
8. The refrigerant system as set forth in claim 7, including a compressor (50) and an evaporator (60) on the refrigerant circulation line;
the blast pipe of compressor (50) with oil returning device's first inner chamber intercommunication, the induction port of compressor (50) with first inner chamber intercommunication, the pipeline of evaporimeter (60) with first inner chamber intercommunication, the lubricated oil pipe way of compressor (50) with oil returning device the second inner chamber intercommunication forms the return circuit.
9. The refrigerant system as claimed in claim 8, wherein the oil return device further includes a third inner cavity therein, the third inner cavity is disposed adjacent to the first inner cavity, the third inner cavity is communicated with an exhaust pipe of the compressor (50) through a pipeline, and the third inner cavity is communicated with a suction port of the compressor (50) through a pipeline.
10. The refrigerant system as claimed in claim 7, wherein the refrigerant used in the refrigerant system is refrigerant R1233zd (E).
11. A centrifugal chiller comprising the refrigerant system of any of claims 7 to 10.
12. A centrifugal heat pump unit comprising a refrigerant system as claimed in any one of claims 7 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922289684.2U CN211424749U (en) | 2019-12-18 | 2019-12-18 | Oil return device, refrigerant system, centrifugal chiller and centrifugal heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922289684.2U CN211424749U (en) | 2019-12-18 | 2019-12-18 | Oil return device, refrigerant system, centrifugal chiller and centrifugal heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211424749U true CN211424749U (en) | 2020-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922289684.2U Active CN211424749U (en) | 2019-12-18 | 2019-12-18 | Oil return device, refrigerant system, centrifugal chiller and centrifugal heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211424749U (en) |
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2019
- 2019-12-18 CN CN201922289684.2U patent/CN211424749U/en active Active
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