CN218469342U - Oil cooling efficient system of centrifugal water chilling unit - Google Patents
Oil cooling efficient system of centrifugal water chilling unit Download PDFInfo
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- CN218469342U CN218469342U CN202222301398.5U CN202222301398U CN218469342U CN 218469342 U CN218469342 U CN 218469342U CN 202222301398 U CN202222301398 U CN 202222301398U CN 218469342 U CN218469342 U CN 218469342U
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Abstract
The utility model relates to the technical field of oil cooling of centrifugal water chilling units, and discloses an oil cooling high-efficiency system of a centrifugal water chilling unit, which comprises a compressor, an evaporator and a condenser, wherein the compressor is respectively connected with the evaporator and the condenser; the evaporator is connected with the condenser; the compressor is connected with an oil cooling system; the evaporator is connected with an injection oil return system. The oil cooling high-efficiency system of the centrifugal water chilling unit is provided for overcoming the problem that a refrigerant and lubricating oil are independent systems, and an independent oil cooling system is needed after the lubricating oil cools a bearing.
Description
Technical Field
The utility model relates to a centrifugal cooling water set oil cooling field specifically is a centrifugal cooling water set oil cooling high efficiency system.
Background
With the advancement of carbon peak reaching and carbon neutralization in China, the advancement of carbon reduction work brings great growth space for centrifuge products.
As a product at the top end of an industrial golden tower, a centrifugal machine is a 'huge super' of central air-conditioning products. Due to the high technical threshold, the centrifuge technology is always a name for the hard strength of enterprises of central air conditioners. Who can master the centrifuge technology can take the initiative of the large-scale central air-conditioning market.
The temperature of the lubricating oil is directly related to the viscosity and lubricating effect of the oil. Too low oil temperature results in a change in oil viscosity, poor lubrication, and high oil pump power. Too high an oil temperature can lead to deterioration of the oil quality. A reasonable oil temperature also reduces the adverse effects of oil degradation due to migration of system refrigerant into the tank. Due to the semi-closed structural characteristic of the centrifugal compressor, the refrigerant and the lubricating oil are independent systems, and after the lubricating oil cools the bearing, an independent oil cooling system is needed, so that the oil cooling high-efficiency system of the centrifugal water chilling unit is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at overcoming current semi-enclosed structural feature of centrifugal compressor, the refrigerant is independent system with lubricating oil, behind the lubricating oil cooling bearing, needs solitary oil cooling system's problem and the cold high-efficient system of a centrifugal cooling water set oil that provides.
The technical scheme for realizing the purpose is as follows: the oil cooling efficient system of the centrifugal water chilling unit comprises a compressor, an evaporator and a condenser, wherein the compressor is respectively connected with the evaporator and the condenser; the evaporator is connected with the condenser; the compressor is connected with an oil cooling system; the evaporator is connected with an injection oil return system.
Preferably, the oil cooling system comprises an oil cooling plate exchanger, the compressor is connected with the oil cooling plate exchanger, and the oil cooling plate exchanger is respectively connected with the condenser and the temperature sensor.
Preferably, the injection oil return system comprises an injection oil return electric valve; the evaporator is connected with the injection oil return electric valve; the other end of the injection oil return electric valve is connected with the compressor.
Preferably, the end of the temperature sensor remote from the oil cooling plate is connected to the compressor.
Preferably, an oil return pipeline is connected to a pipeline connected between the evaporator and the injection oil return electric valve, and the other end of the oil return pipeline is connected to a pipeline connected between the compressor and the evaporator.
The utility model has the advantages that: the load born by the oil cooling plate exchanger is reduced by arranging a combined form of an injection oil return system and the oil cooling plate exchanger; the low-temperature oil and part of the refrigerant in the evaporator return to the oil tank through the injection oil return system, and then the oil temperature in the original oil tank is reduced, so that the load of the oil cooling system is reduced.
Drawings
Fig. 1 is a schematic detail view of the present invention.
In the figure: 1. a compressor; 2. an evaporator; 3. a condenser; 4. oil cooling plate replacement; 5. an injection oil return electric valve; 6. a temperature sensor; 7. an injection oil return system; 8. an oil cooling system.
Detailed Description
The technical solution of the present invention will be clearly and completely described with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, the oil cooling high-efficiency system of the centrifugal water chilling unit comprises a compressor 1, an evaporator 2 and a condenser 3, wherein the compressor 1 is respectively connected with the evaporator 2 and the condenser 3; the evaporator 2 is connected with the condenser 3; the compressor 1 is connected with an oil cooling system 8; the evaporator 2 is connected with an injection oil return system 7. The oil cooling system 8 comprises an oil cooling plate exchanger 4, the compressor 1 is connected with the oil cooling plate exchanger 4, and the oil cooling plate exchanger 4 is respectively connected with the condenser 3 and the temperature sensor 6. The injection oil return system 7 comprises an injection oil return electric valve 5; the evaporator 2 is connected with an injection oil return electric valve 5; the other end of the injection oil return electric valve 5 is connected with the compressor 1. The end of the temperature sensor 6 remote from the oil cooling plate 4 is connected to the compressor 1. An oil return pipeline is connected to a pipeline connected between the evaporator 2 and the injection oil return electric valve 5, and the other end of the oil return pipeline is connected to a pipeline connected between the compressor 1 and the evaporator 2. After the unit is started, the injection oil return electric valve 5 is opened to the minimum opening degree of 40%, lubricating oil in the evaporator 2 at about 5 degrees returns to the oil tank of the compressor 1 by using an injection pump, the oil temperature in the oil tank is about more than 30 degrees, the temperature of the oil tank is reduced after mixing, then the oil in the oil tank is conveyed to the oil cooling plate by the oil pump to be changed into 4, meanwhile, the temperature sensor 6 measures the oil temperature at the outlet of the oil cooling plate to be more than 35 degrees, the oil cooling electromagnetic valve is opened, and the oil cooling electromagnetic valve is closed at the temperature of less than 30 degrees. When the temperature is higher than 40 ℃, the heat exchange capacity of the oil cooling plate 4 is not enough, the opening of the injection oil return electric valve 5 is increased, the injection flow of the evaporator 2 is increased, the temperature of an oil groove is reduced, the oil temperature is 1 ℃ per liter, the injection oil return electric valve 5 is opened by 10 percent, and when the temperature is 46 ℃, the injection oil return electric valve 5 is fully opened. When the oil cooling plate exchanger 4 is not large enough, the oil return amount of the evaporator 2 is increased, the temperature of the oil inlet cooling plate exchanger 4 is reduced, the load of the oil cooling plate exchanger 4 is reduced, and the load borne by the oil cooling plate exchanger 4 is reduced in a mode of combining the injection oil return system 7 with the oil cooling plate exchanger 4; the low-temperature oil and part of the refrigerant in the evaporator 2 are returned to the oil tank through the injection oil return system 7, and then the oil temperature in the original oil tank is reduced, so that the load of the oil cooling system 8 is reduced, and the operation requirement of the oil cooling plate exchanger 4 can be met.
The working principle is as follows: after the unit is started, the injection oil return electric valve 5 is opened to the minimum opening degree of 40%, lubricating oil in the evaporator 2 at about 5 degrees returns to an oil tank of the compressor 1 by using an injection pump, the oil temperature in the oil tank is approximately above 30 degrees, the temperature of the oil tank is reduced after mixing, then the oil in the oil tank is conveyed to an oil cooling plate by an oil pump to be changed into 4, meanwhile, the temperature of the oil outlet of the oil cooling plate is measured by a temperature sensor 6, the temperature is more than 35 degrees, an oil cooling electromagnetic valve is opened, and the oil cooling electromagnetic valve is closed when the temperature is less than 30 degrees. When the temperature is higher than 40 ℃, the heat exchange capacity of the oil cooling plate 4 is not enough, the opening of the injection oil return electric valve 5 is increased, the injection flow of the evaporator 2 is increased, the temperature of an oil groove is reduced, the oil temperature is 1 ℃ per liter, the injection oil return electric valve 5 is opened by 10 percent, and when the temperature is 46 ℃, the injection oil return electric valve 5 is fully opened. When the oil cooling plate is not changed by 4, the oil return amount of the evaporator 2 is increased, the temperature of the oil inlet cooling plate is reduced by 4, the load of the oil cooling plate for 4 is reduced, and the operation requirement of the oil cooling plate for 4 can be met.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. The oil cooling efficient system of the centrifugal water chilling unit is characterized by comprising a compressor (1), an evaporator (2) and a condenser (3), wherein the compressor (1) is respectively connected with the evaporator (2) and the condenser (3); the evaporator (2) is connected with the condenser (3); the compressor (1) is connected with an oil cooling system (8); the evaporator (2) is connected with an injection oil return system (7).
2. A centrifugal chiller unit oil cooling efficient system according to claim 1, characterized in that the oil cooling system (8) comprises an oil cooling plate exchanger (4), the compressor (1) is connected with the oil cooling plate exchanger (4), and the oil cooling plate exchanger (4) is respectively connected with the condenser (3) and the temperature sensor (6).
3. The oil cooling efficient system of the centrifugal chiller according to claim 1, characterized in that the injection oil return system (7) comprises an injection oil return electric valve (5); the evaporator (2) is connected with the injection oil return electric valve (5); the other end of the injection oil return electric valve (5) is connected with the compressor (1).
4. A centrifugal chiller unit oil cooling high efficiency system as claimed in claim 2, characterized in that the end of the temperature sensor (6) remote from the oil cooling plate (4) is connected to the compressor (1).
5. The oil cooling efficient system of the centrifugal chiller according to claim 3, characterized in that an oil return pipeline is connected to a pipeline connected between the evaporator (2) and the injection oil return electric valve (5), and the other end of the oil return pipeline is connected to a pipeline connected between the compressor (1) and the evaporator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222301398.5U CN218469342U (en) | 2022-08-31 | 2022-08-31 | Oil cooling efficient system of centrifugal water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222301398.5U CN218469342U (en) | 2022-08-31 | 2022-08-31 | Oil cooling efficient system of centrifugal water chilling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218469342U true CN218469342U (en) | 2023-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222301398.5U Active CN218469342U (en) | 2022-08-31 | 2022-08-31 | Oil cooling efficient system of centrifugal water chilling unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN218469342U (en) |
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2022
- 2022-08-31 CN CN202222301398.5U patent/CN218469342U/en active Active
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