CN210345962U - Refrigerant throttle expansion oil cooling device - Google Patents
Refrigerant throttle expansion oil cooling device Download PDFInfo
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- CN210345962U CN210345962U CN201921190667.7U CN201921190667U CN210345962U CN 210345962 U CN210345962 U CN 210345962U CN 201921190667 U CN201921190667 U CN 201921190667U CN 210345962 U CN210345962 U CN 210345962U
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Abstract
The utility model relates to a refrigerant throttle expansion oil cooling device, including refrigerating system return-air manifold, oil-cooled plate heat exchanger and reservoir the last first stop valve, time oil pipe and the second stop valve of returning links to each other with oil-cooled plate heat exchanger is last to be connected with third stop valve, fourth stop valve and fifth stop valve to be connected with the reservoir through fourth stop valve, expansion valve, solenoid valve and first valve the lower extreme of reservoir is connected with the liquid supply pipeline, and the upper end is equipped with second valve and third valve. The utility model has the advantages of simple structure has simplified the refrigerating system pipeline greatly, has also effectively reduced refrigerating system's refrigerant charge volume simultaneously, and the switch of accessible solenoid valve carries out accurate control again to the temperature of producing oil simultaneously.
Description
Technical Field
The utility model relates to a cooling device, especially a refrigerant throttle expansion oil cooling device.
Background
In the prior art, a refrigerant is distributed through a siphon tank, the siphon tank and an oil cooling plate are filled with a large amount of refrigerants, the temperature of oil cooled by the oil cooling plate can be as low as about 10-15 ℃ in cold winter, the viscosity of the oil is greatly increased at the temperature, the oil supply of a compressor is extremely insufficient, the oil flow detection alarm is realized, and the compressor unit cannot stably operate. And the oil cooling plate is filled with refrigerant in the oil cooling plate, and excessive refrigerant can not effectively participate in circulation, so that the refrigerant is filled and wasted.
As shown in fig. 2, in the conventional design method of the thermosiphon oil cooling pipeline, since there is no flow restriction at the inlet and outlet of the oil cooling plate for exchanging the refrigerant, the oil cooling is caused to be half exchanged with the refrigerant filled with low temperature (the temperature in cold winter can be lower than 10 ℃), the temperature of the lubricating oil after cooling is too low, the viscosity of the oil is increased, the fluidity is rapidly deteriorated, the actual oil supply amount of the compressor unit is seriously affected, the oil pressure difference alarm is easily generated, the oil flow alarm and other conditions occur, meanwhile, the abrasion of the internal moving parts of the compressor can be aggravated, and the. In addition, a half of volume of refrigerant can be stored in the siphon tank, the siphon tank is basically full of the refrigerant in the siphon tank, the oil-cooled plate type heat exchanger connecting pipeline and the oil-cooled plate exchanger, the refrigerant can be greatly increased in the system, and the environment-friendly design concept is not met.
Disclosure of Invention
The utility model aims at overcoming the above not enough, provide a simple structure, convenient to use, saved thermosyphon liquid storage pot, effectively reduced refrigerating system's refrigerant charge volume, the refrigerant throttle expansion oil cooling device that the switch of the temperature of producing oil accessible solenoid valve carries out accurate control again.
The purpose of the utility model is realized through the following technical scheme: the utility model provides a refrigerant throttle expansion oil cooling device, includes refrigerating system return-air manifold, oil-cooled plate heat exchanger and reservoir, refrigerating system return-air manifold's one end evaporimeter is connected, and the other end links to each other with vapour and liquid separator return-air manifold is last to link to each other with oil-cooled plate heat exchanger through first stop valve, oil return pipe and second stop valve be connected with third stop valve, fourth stop valve and fifth stop valve on the oil-cooled plate heat exchanger to be connected with the reservoir through fourth stop valve, expansion valve, solenoid valve and first valve the lower extreme of reservoir is connected with the liquid supply pipeline, and the upper end is equipped with second valve and third valve.
The utility model discloses a further improvement lies in: and the upper end of the liquid storage device is also provided with a safety valve.
The utility model discloses a further improvement lies in: the pressure of the safety valve is not lower than 2.4 MPa.
The utility model discloses a further improvement lies in: and a temperature sensing bulb of the expansion valve is horizontally fixed on a pipeline between the second stop valve 4 and the oil-cooled plate heat exchanger.
The utility model discloses a further improvement lies in: and a pressure sensor or an evaporation pressure regulating valve is arranged on the oil-cooled plate type heat exchanger.
Compared with the prior art, the utility model has the following advantage:
the thermosyphon liquid storage tank is omitted, the oil cooling plate is replaced by dry evaporation, and liquid refrigerant is not stored in the oil cooling plate, so that pipelines of a refrigeration system are greatly simplified, the refrigerant filling amount of the refrigeration system is effectively reduced, and the oil outlet temperature can be accurately controlled by the switch of the electromagnetic valve.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a conventional thermosiphon oil cooling circuit;
reference numbers in the figures: the system comprises a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a fifth stop valve, a 2-oil-cooled plate heat exchanger, a 3-third stop valve, a 4-second stop valve, a 5-first stop valve, a 6-return air main pipe, a 7-return oil pipe, a 8-fourth stop valve, a 9-expansion valve, a 10-electromagnetic valve, a 11-first valve, a 12-second valve, a 13-third valve, a 14-liquid storage device.
The specific implementation mode is as follows:
in order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.
Fig. 1 shows an embodiment of a refrigerant throttle expansion oil cooling device: the refrigeration system comprises a refrigeration system air return header pipe 6, an oil-cooled plate type heat exchanger 2 and a liquid storage device 14, wherein one end of the refrigeration system air return header pipe 6 is connected with an evaporator, the other end of the refrigeration system air return header pipe is connected with a gas-liquid separator, the air return header pipe 6 is connected with the oil-cooled plate type heat exchanger 2 through a first stop valve 5, an oil return pipe 7 and a second stop valve 4, the oil-cooled plate type heat exchanger 2 is connected with a third stop valve 3, a fourth stop valve 8 and a fifth stop valve 1, and is connected with the liquid storage device 14 through a fourth stop valve 8, an expansion valve 9, an electromagnetic valve 10 and a first valve 11, the lower end of the liquid storage device 14 is connected with a liquid supply pipeline 15, and the upper end of the liquid; a safety valve 16 is also arranged at the upper end of the liquid storage tank 14; the pressure of the safety valve 16 is not lower than 2.4 MPa; and a temperature sensing bulb of the expansion valve 9 is horizontally fixed on a pipeline between the second stop valve 4 and the oil-cooled plate heat exchanger 2.
Refrigerant from an evaporative condenser directly enters a liquid storage device 14 through a third valve 12, the third valve 13 is a balance pipe of the liquid storage device, one part of the refrigerant in the liquid storage device 14 is supplied to an evaporator through a liquid supply pipeline 15, the other part of the refrigerant enters the oil-cooled plate type heat exchanger 2 through a first valve 11 and an electromagnetic valve 10, an expansion valve 9 and a fourth stop valve 8, the refrigerant liquid forms low-temperature refrigerant under a gas-liquid mixed state under the throttling and expansion action of the expansion valve 9, the low-temperature refrigerant carries out violent heat exchange with refrigeration oil at 80 ℃ in the oil-cooled plate type heat exchanger 2, the refrigerant gas is heated and evaporated to be changed into refrigerant gas, the refrigerant gas enters a refrigeration system air return header pipe 6 through a second stop valve 4, an oil return bend 7 and a first stop valve 5, the evaporation pressure of the refrigerant in the oil-cooled plate type heat exchanger 2 can be adjusted and controlled through a pressure sensor, generally, the evaporation temperature is controlled to be about-5 ℃, and the refrigeration oil entering the oil cooling plate for exchange returns to the air return main pipe of the refrigeration system under the driving of high-speed airflow; the refrigeration oil with the temperature of about 80 ℃ separated from the oil enters the oil-cooled plate heat exchanger 2 from the fifth stop valve 1, flows out from the third stop valve 3 after being cooled, and is sprayed into the refrigeration compressor again, the fourth stop valve 16 is a safety valve of a liquid reservoir, and a pressure sensor or an evaporation pressure regulating valve is installed on the oil-cooled plate heat exchanger 2.
The utility model discloses saved the thermosyphon liquid storage pot, and oil cold plate trades interior for dry-type evaporation, and the refrigerating system pipeline has been simplified greatly to inside liquid refrigerant that does not save, has also effectively reduced refrigerating system's refrigerant charge volume simultaneously, and the switch of the accessible solenoid valve of the temperature of producing oil again simultaneously carries out accurate control.
The applicant further states that the present invention is described by the above embodiments, but the present invention is not limited to the above embodiments, i.e. the present invention is not limited to the above embodiments, and the present invention can be implemented only by relying on the above methods and structures. It should be clear to those skilled in the art that any improvement of the present invention is to the present invention, and the addition of the equivalent replacement of the implementation method and the steps, the selection of the specific mode, etc. all fall within the protection scope and the disclosure scope of the present invention.
The utility model discloses not limited to above-mentioned embodiment, all adopt and the utility model discloses similar structure and method realize the utility model discloses all modes of purpose all are within the protection scope of the utility model.
Claims (5)
1. A refrigerant throttle expansion oil cooling device is characterized in that: including refrigerating system return air house steward (6), oil-cooled plate heat exchanger (2) and reservoir (14) go up return air house steward (6) and link to each other with oil-cooled plate heat exchanger (2) through first stop valve (5), return oil pipe (7) and second stop valve (4) be connected with third stop valve (3), fourth stop valve (8) and fifth stop valve (1) on oil-cooled plate heat exchanger (2) to be connected with reservoir (14) through fourth stop valve (8), expansion valve (9), solenoid valve (10) and first valve (11) the lower extreme of reservoir (14) is connected with liquid supply pipeline (15), and the upper end is equipped with second valve (12) and third valve (13).
2. The refrigerant throttle expansion oil cooling device according to claim 1, characterized in that: and a safety valve (16) is also arranged at the upper end of the liquid storage device (14).
3. The refrigerant throttle expansion oil cooling device according to claim 2, characterized in that: the pressure of the safety valve (16) is not lower than 2.4 MPa.
4. The refrigerant throttle expansion oil cooling device according to claim 1, characterized in that: and a temperature sensing bulb of the expansion valve (9) is horizontally fixed on a pipeline between the second stop valve (4) and the oil-cooled plate type heat exchanger (2).
5. The refrigerant throttle expansion oil cooling device according to claim 1, characterized in that: and a pressure sensor or an evaporation pressure regulating valve is arranged on the oil-cooled plate type heat exchanger (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921190667.7U CN210345962U (en) | 2019-07-26 | 2019-07-26 | Refrigerant throttle expansion oil cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921190667.7U CN210345962U (en) | 2019-07-26 | 2019-07-26 | Refrigerant throttle expansion oil cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210345962U true CN210345962U (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921190667.7U Active CN210345962U (en) | 2019-07-26 | 2019-07-26 | Refrigerant throttle expansion oil cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210345962U (en) |
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2019
- 2019-07-26 CN CN201921190667.7U patent/CN210345962U/en active Active
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