CN214887724U - Siphon cooling system suitable for screw compressor - Google Patents
Siphon cooling system suitable for screw compressor Download PDFInfo
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- CN214887724U CN214887724U CN202121446936.9U CN202121446936U CN214887724U CN 214887724 U CN214887724 U CN 214887724U CN 202121446936 U CN202121446936 U CN 202121446936U CN 214887724 U CN214887724 U CN 214887724U
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Abstract
The utility model provides a siphon cooling system suitable for helical-lobe compressor, include: a screw compressor; the inlet of the oil separator is connected with the refrigerant outlet of the screw compressor, and the gas separation outlet of the oil separator is connected with the inlet of the evaporative condenser; a refrigerant inlet of the plate oil cooler is connected with an outlet of the evaporative condenser, a refrigerant outlet of the plate oil cooler is connected with an inlet of the evaporative condenser, an oil inlet of the plate oil cooler is connected with a lubricating oil inlet of the screw compressor, and an oil outlet of the plate oil cooler is connected with a lubricating oil outlet of the screw compressor; the inlet of the liquid receiver is connected with the outlet of the evaporative condenser, and the outlet of the liquid receiver is connected with the inlet of the evaporator; and the inlet of the gas-liquid separator is connected with the outlet of the evaporator, and the gas outlet of the gas-liquid separator is connected with the refrigerant inlet of the screw compressor.
Description
Technical Field
The utility model relates to a cooling system technical field, concretely relates to siphon cooling system suitable for helical-lobe compressor.
Background
With the continuous development of the refrigeration industry, screw compressors are widely applied in the field of large-scale food freezing. Wherein, the temperature of the lubricating oil in the screw compressor can seriously affect the running state and the refrigerating effect of the whole refrigerating system. Generally, the lubricating oil flowing out of the screw compressor has a high temperature, which causes the lubricating oil to undergo a chemical reaction, resulting in decomposition and deterioration of the oil, and formation of deposits and coke. Therefore, in order to improve and maintain the operation performance of the refrigeration system, it is necessary to cool the lubricating oil in the screw compressor.
At present, the lubricating oil in the screw compressor is generally cooled by a circulating water cooling system, but the method has the following defects: 1. the circulating water cooling system needs to increase the investment and energy consumption of equipment such as a circulating water pump, a cooling tower and the like. 2. Circulating water system need detect quality of water and be equipped with charge device. 3. The use of this method has limitations in arid water-deficient areas.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a siphon cooling system suitable for helical-lobe compressor makes it can not use equipment such as circulating water pump and cooling tower, and the arid quality requirement adds the medicine processing, also can overcome the limitation in arid water shortage area.
In order to achieve the above purpose, the present invention is implemented by the following technical solutions: a siphon cooling system for a screw compressor comprising:
a screw compressor;
the inlet of the oil separator is connected with the refrigerant outlet of the screw compressor, and the gas separation outlet of the oil separator is connected with the inlet of the evaporative condenser;
a refrigerant inlet of the plate oil cooler is connected with an outlet of the evaporative condenser, a refrigerant outlet of the plate oil cooler is connected with an inlet of the evaporative condenser, an oil inlet of the plate oil cooler is connected with a lubricating oil inlet of the screw compressor, and an oil outlet of the plate oil cooler is connected with a lubricating oil outlet of the screw compressor;
the inlet of the liquid receiver is connected with the outlet of the evaporative condenser, and the outlet of the liquid receiver is connected with the inlet of the evaporator; and
and the inlet of the gas-liquid separator is connected with the outlet of the evaporator, and the gas outlet of the gas-liquid separator is connected with the refrigerant inlet of the screw compressor.
The evaporator further comprises a siphon device, an inlet of the siphon device is connected with an outlet of the evaporative condenser, the upper portion and the lower portion of the siphon device are respectively provided with a first outlet and a second outlet, an inlet of the liquid receiver is connected with the first outlet, and a refrigerant inlet of the plate oil cooler is connected with the second outlet.
Further, an oil outlet of the oil separator is connected to a lubricating oil inlet of the screw compressor.
Further, a thermostatic expansion valve is arranged between the liquid reservoir and the evaporator, an inlet of the thermostatic expansion valve is connected with an outlet of the liquid reservoir, and an outlet of the thermostatic expansion valve is connected with an inlet of the evaporator.
Further, a temperature sensing bulb is installed on the inner wall of the outlet of the evaporator, and the temperature sensing bulb is connected with the thermal expansion valve.
The utility model has the advantages that:
1. the utility model provides a pair of siphon cooling system suitable for screw compressor combines compression refrigeration cycle and lubricating oil cooling cycle together through the siphon device, utilizes one set of system to accomplish lubricating oil cooling and compression refrigeration simultaneously promptly. Compared with the traditional circulating water cooling system, the system does not use equipment such as a circulating water pump and a cooling tower, does not have water quality requirement and chemical treatment, overcomes the limitation of the drought water-deficient area, and can be widely popularized and used in the drought water-deficient area.
2. The utility model provides a pair of siphon cooling system suitable for screw compressor, the application of siphon device has solved the problem that does not have the liquid column height when plate-type oil cooler siphon is refrigerated, has increased the effect of spraying drainage, utilizes the efficiency of bleeding of the venlafer pipe among the hydrodynamics, has overcome the resistance in the refrigerant flow path, increases plate-type oil cooler's refrigerant flow, the flow of required low temperature high pressure liquid refrigerant when having satisfied lubricating oil cooling.
Drawings
Fig. 1 is a schematic diagram of the wiring structure of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of the portion B in FIG. 1;
FIG. 4 is an enlarged schematic view of the portion C in FIG. 1;
fig. 5 is a schematic view of the installed partial structure of the present invention;
fig. 6 is a schematic top view of the structure of fig. 5.
Reference numerals: 10-screw compressor, 11-refrigerant outlet, 12-refrigerant inlet, 13-lubricating oil inlet, 14-lubricating oil outlet, 20-oil separator, 21-gas-component outlet, 22-oil-component outlet, 30-evaporative condenser, 40-plate oil cooler, 41-refrigerant inlet, 42-refrigerant outlet, 43-oil inlet, 44-oil outlet, 50-liquid reservoir, 60-evaporator, 70-gas-liquid separator, 80-siphon device, 81-first outlet, 82-second outlet, 90-thermal expansion valve and 91-temperature sensing bag.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
In this application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or an integral part; can be mechanically connected or connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "horizontal," "top," "bottom," "upper," "lower," "inner" and "outer" and the like are used in the orientation or positional relationship shown in the drawings, which are used for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
As shown in fig. 1 to 6, the present invention provides a siphon cooling system suitable for a screw compressor, which comprises a screw compressor 10, an oil separator 20, an evaporative condenser 30, a plate oil cooler 40, a liquid reservoir 50, an evaporator 60 and a gas-liquid separator 70.
The inlet of the oil separator 20 is connected to the refrigerant outlet 11 of the screw compressor 10, and the gas outlet 21 of the oil separator 20 is connected to the inlet of the evaporative condenser 30.
The refrigerant inlet 41 of the plate oil cooler 40 is connected to the outlet of the evaporative condenser 30, and the refrigerant outlet 42 of the plate oil cooler 40 is connected to the inlet of the evaporative condenser 30. An oil inlet 43 of the plate oil cooler 40 is connected with the lubricating oil inlet 13 of the screw compressor 10, and an oil outlet 44 of the plate oil cooler 40 is connected with the lubricating oil outlet 14 of the screw compressor 10.
The inlet of the liquid reservoir 50 is connected to the outlet of the evaporative condenser 30 and the outlet of the liquid reservoir 50 is connected to the inlet of the evaporator 60.
An inlet of the gas-liquid separator 70 is connected to an outlet of the evaporator 60, and a gas outlet of the gas-liquid separator 70 is connected to the refrigerant inlet 12 of the screw compressor 10.
The whole working process is divided into a lubricating oil flow path and a refrigerant flow path.
Lubricating oil flow path: when the screw compressor 10 is in operation, the lubricating oil outlet 14 discharges high-temperature lubricating oil. The high-temperature lubricating oil enters the plate oil cooler 40 and is cooled into low-temperature lubricating oil, and the low-temperature lubricating oil is discharged from the oil outlet 44 of the plate oil cooler 40 and returns to the screw compressor 10 from the lubricating oil inlet 13 of the screw compressor 10, so that the lubricating oil cooling cycle is completed.
A refrigerant flow path: when the screw compressor 10 is in operation, the refrigerant outlet 11 discharges high-temperature and high-pressure gaseous refrigerant. The high-temperature high-pressure gaseous refrigerant enters the oil separator 20 for oil-gas separation, and the oil-gas separation can separate a small amount of lubricating oil carried in the high-temperature high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant from which the lubricating oil is separated is discharged from the gas branch outlet 21 of the oil separator 20, enters the evaporative condenser 30, and is condensed into a low-temperature and high-pressure liquid refrigerant in the evaporative condenser 30, and the low-temperature and high-pressure liquid refrigerant is divided into two paths: one path is discharged from the outlet of the evaporative condenser 30, enters the liquid receiver 50 for storage, then is discharged from the outlet of the liquid receiver 50, enters the evaporator 60, is evaporated into low-temperature and low-pressure gaseous refrigerant after absorbing the heat of the outside air in the evaporator 60, is discharged from the outlet of the evaporator 60, enters the gas-liquid separator 70, is dried in the gas-liquid separator 70, is discharged from the outlet of the gas-liquid separator 70, returns to the screw compressor 10 from the refrigerant inlet 12, and starts the next cycle, and the compression refrigeration is completed in the path; the other path is discharged from the outlet of the evaporative condenser 30, enters the cooling cavity of the plate oil cooler 40 from the refrigerant inlet 41 of the plate oil cooler 40, exchanges heat with the high-temperature lubricating oil entering the plate oil cooler 40 in the cooling cavity to cool the high-temperature lubricating oil into low-temperature lubricating oil, evaporates the low-temperature high-pressure liquid refrigerant after heat exchange into high-pressure high-temperature gaseous refrigerant, mixes with the high-temperature high-pressure gaseous refrigerant discharged from the gas distribution outlet 21 of the oil separator 20, and enters the evaporative condenser 30, thereby cooling the lubricating oil. Finally, the two combine to complete the refrigerant cycle.
The system combines the compression refrigeration cycle and the lubricating oil cooling cycle together, namely, a set of system is utilized to simultaneously finish the cooling of the lubricating oil and the compression refrigeration. Compared with the traditional circulating water cooling system, the system does not use equipment such as a circulating water pump and a cooling tower, does not have water quality requirement and chemical treatment, overcomes the limitation of the drought and water-deficient area, and can be widely popularized and used in the drought and water-deficient area.
In one embodiment, the system further includes a siphon device 80. An inlet of the siphon device 80 is connected to an outlet of the evaporative condenser 30, and upper and lower portions of the siphon device 80 have a first outlet 81 and a second outlet 82, respectively. The inlet of the reservoir 50 is connected to the first outlet 81, and the refrigerant inlet 41 of the plate oil cooler 40 is connected to the second outlet 82. The first outlet 81 and the second outlet 82 maintain a certain height difference, and the height difference can overcome the resistance in the refrigerant flow path by utilizing the air suction efficiency of the siphon device 80 in fluid mechanics, and reasonably distribute the flow of the low-temperature high-pressure liquid refrigerant required by the cooling of the lubricating oil in the siphon device 80, thereby achieving the purpose of better cooling the lubricating oil.
It is worth explaining that the application of the siphon device 80 solves the problem that no liquid column height exists when the plate type oil cooler 40 is in siphon cooling, increases the function of jet drainage, overcomes the resistance in a refrigerant flow path by utilizing the air extraction efficiency of a Laval tube in hydrodynamics, increases the refrigerant flow of the plate type oil cooler 40, and meets the flow of a low-temperature high-pressure liquid refrigerant required by lubricating oil cooling.
The siphon device 80 can combine the compression refrigeration cycle and the lubricating oil cooling cycle together, and is equivalent to a circulating water pump for replacing a circulating water cooling system.
In one embodiment, the oil outlet 22 of the oil separator 20 is connected to the lubricant inlet 13 of the screw compressor 10, so that the lubricant separated from the high-temperature and high-pressure gaseous refrigerant is returned to the screw compressor 10 for recycling.
In one embodiment, a thermal expansion valve 90 is further disposed between the liquid reservoir 50 and the evaporator 60, an inlet of the thermal expansion valve 90 is connected to an outlet of the liquid reservoir 50, and an outlet of the thermal expansion valve 90 is connected to an inlet of the evaporator 60. The thermostatic expansion valve 90 can expand the low-temperature high-pressure liquid refrigerant discharged from the outlet of the liquid receiver 50 into a low-temperature low-pressure refrigerant gas-liquid mixture, and send the mixture into the evaporator 60.
In one embodiment, a bulb 91 is installed on an outer wall of an outlet of the evaporator 60, and the bulb 91 is integrally connected with the thermostatic expansion valve 90. The bulb 91 senses the temperature of the low-temperature and low-pressure refrigerant discharged from the outlet of the evaporator 60, and the thermostatic expansion valve 90 automatically adjusts the opening degree by the temperature of the outlet of the evaporator 60, so as to adjust the flow rate of the low-temperature and low-pressure refrigerant liquid mixture entering the evaporator 60 according to the opening degree.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a siphon cooling system suitable for helical-lobe compressor which characterized in that: the method comprises the following steps:
a screw compressor;
the inlet of the oil separator is connected with the refrigerant outlet of the screw compressor, and the gas separation outlet of the oil separator is connected with the inlet of the evaporative condenser;
a refrigerant inlet of the plate oil cooler is connected with an outlet of the evaporative condenser, a refrigerant outlet of the plate oil cooler is connected with an inlet of the evaporative condenser, an oil inlet of the plate oil cooler is connected with a lubricating oil inlet of the screw compressor, and an oil outlet of the plate oil cooler is connected with a lubricating oil outlet of the screw compressor;
the inlet of the liquid receiver is connected with the outlet of the evaporative condenser, and the outlet of the liquid receiver is connected with the inlet of the evaporator; and
and the inlet of the gas-liquid separator is connected with the outlet of the evaporator, and the gas outlet of the gas-liquid separator is connected with the refrigerant inlet of the screw compressor.
2. A syphon cooling system for a screw compressor as claimed in claim 1, wherein: the evaporator further comprises a siphon device, an inlet of the siphon device is connected with an outlet of the evaporative condenser, a first outlet and a second outlet are respectively formed in the upper portion and the lower portion of the siphon device, an inlet of the liquid reservoir is connected with the first outlet, and a refrigerant inlet of the plate oil cooler is connected with the second outlet.
3. A syphon cooling system for a screw compressor as claimed in claim 1, wherein: an oil outlet of the oil separator is connected to a lubricating oil inlet of the screw compressor.
4. A syphon cooling system for a screw compressor as claimed in claim 1, wherein: a thermostatic expansion valve is also arranged between the liquid reservoir and the evaporator, the inlet of the thermostatic expansion valve is connected with the outlet of the liquid reservoir, and the outlet of the thermostatic expansion valve is connected with the inlet of the evaporator.
5. A syphon cooling system as claimed in claim 4, adapted for use in a screw compressor, wherein: the inner wall of the outlet of the evaporator is provided with a temperature sensing bulb, and the temperature sensing bulb is connected with the thermostatic expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121446936.9U CN214887724U (en) | 2021-06-28 | 2021-06-28 | Siphon cooling system suitable for screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121446936.9U CN214887724U (en) | 2021-06-28 | 2021-06-28 | Siphon cooling system suitable for screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214887724U true CN214887724U (en) | 2021-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121446936.9U Active CN214887724U (en) | 2021-06-28 | 2021-06-28 | Siphon cooling system suitable for screw compressor |
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| Country | Link |
|---|---|
| CN (1) | CN214887724U (en) |
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2021
- 2021-06-28 CN CN202121446936.9U patent/CN214887724U/en active Active
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