CN210624987U - Boosting system for assisting operation of refrigeration system - Google Patents
Boosting system for assisting operation of refrigeration system Download PDFInfo
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- CN210624987U CN210624987U CN201921598299.XU CN201921598299U CN210624987U CN 210624987 U CN210624987 U CN 210624987U CN 201921598299 U CN201921598299 U CN 201921598299U CN 210624987 U CN210624987 U CN 210624987U
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- branch pipe
- compressor
- pipe
- valve
- servo valve
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Abstract
The utility model discloses a booster system of supplementary refrigerating system operation, including first compressor, the exhaust end intercommunication of first compressor has first blast pipe, the exhaust end intercommunication of second compressor has the second blast pipe, the confluence becomes first branch pipe after first blast pipe and the second blast pipe is parallelly connected, first branch pipe is divided into second branch pipe and third branch pipe through tee bend pipe fitting, install first stop valve, first filter, first servo valve and second stop valve according to the medium flow direction in proper order on the second branch pipe, the terminal condenser that gets into of second branch pipe, install third stop valve, second filter, second servo valve and fourth stop valve according to the medium flow direction in proper order on the third branch pipe, the terminal dry-type oil separator that gets into of third branch pipe. The utility model discloses the carminative pressure boost of compressor in simple and convenient realization low load operation avoids the exhaust pressure low excessively to cause the emergence of the unable operational aspect of end equipment.
Description
Technical Field
The utility model relates to a refrigeration technology field, concretely relates to booster system of supplementary refrigerating system operation.
Background
The cold storage is a constant temperature and humidity storage device for creating an environment with different outdoor temperature or humidity by manual means and for food, liquid, chemical engineering, medicine, vaccine, scientific experiment and other articles, the main devices of the refrigeration system of the cold storage comprise a compressor, an evaporator, a condenser and an expansion valve, and the refrigeration principle is similar to that of an air conditioning system.
When a refrigeration house refrigeration system is designed, the refrigeration house refrigeration system is usually designed according to the maximum production capacity of the system, but in the actual operation process of a refrigeration unit, the production load is small, namely only a small part of terminal cooling equipment is operated, most of the terminal cooling equipment is not operated, especially in winter low-load operation, the exhaust pressure of a compressor is often too low, the working pressure required by the terminal equipment cannot be reached later, the cooling requirement of the terminal equipment cannot be met, and the terminal equipment cannot normally operate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a booster system of supplementary refrigerating system operation realizes the carminative pressure boost of compressor in the low-load operation portably, avoids the exhaust pressure low excessively to cause the emergence of the unable normal operating conditions of terminal equipment to solve the problem that proposes in the above-mentioned background art.
In order to achieve the purpose, the invention provides the following technical scheme: a booster system for assisting in the operation of a refrigeration system comprising a first compressor, a second compressor, and a condenser, wherein: the exhaust end of the first compressor is connected with a first exhaust pipe, the exhaust end of the second compressor is connected with a second exhaust pipe, the first exhaust pipe and the second exhaust pipe are connected in parallel to form a first branch pipe, the first branch pipe is divided into a second branch pipe and a third branch pipe through a tee pipe fitting, the second branch pipe is sequentially provided with a first stop valve, a first filter, a first servo valve and a second stop valve according to the medium flow direction, the condenser is connected with the tail end of the second branch pipe, the third branch pipe is sequentially provided with a third stop valve, a second filter, a second servo valve and a fourth stop valve according to the medium flow direction, the tail end of the third branch pipe is connected with a dry-type oil separator, the outlet of the condenser is connected with a fourth branch pipe, the fourth branch pipe is provided with a throttle valve, the tail end of the fourth branch pipe is connected with an evaporator, the outlet end of the evaporator is respectively connected with the suction ends of the first compressor and the second compressor after being divided through, and an outlet of the dry-type oil separator is connected with a fifth branch pipe, and the tail end of the fifth branch pipe is connected with the evaporator.
And the air suction end and the air discharge end of the first compressor and the air suction end and the air discharge end of the second compressor are provided with shutoff valves.
The first servo valve and the second servo valve are both pressure-controlled servo valves, and the set values of the first servo valve and the second servo valve are both 0.75MPa-0.85 MPa.
Wherein, the first filter and the second filter are both stainless steel filters, and the mesh diameters of the first filter and the second filter are 1mm-2 mm.
In summary, due to the adoption of the technology, the invention has the beneficial effects that:
in the utility model, one part of the compressor exhaust is connected with the third branch pipe and then connected with the dry-type oil separator, the other part is connected with the second branch pipe and then connected with the condenser, and all valves on the second branch pipe and the third branch pipe are in a normally open state (wherein, the first servo valve and the second servo valve are opened when reaching a set pressure value); when a refrigeration system operates in winter, the pressure values of a first servo valve and a second servo valve are set according to the requirements of the refrigeration system, then a group of compressors is operated, the defrosting system does not operate, an original stop valve of the system on a fifth branch pipe is in a closed state, refrigerant gas is gathered at the front ends of the first servo valve and the second servo valve, the pressure at the front ends is continuously increased, when the pressure reaches the set values of the first servo valve and the second servo valve, the first servo valve and the second servo valve are opened, the refrigeration system starts to operate, the pressurization of the exhaust gas of the compressor during low-load operation is simply and conveniently realized, and the situation that the exhaust gas pressure is too low to cause the abnormal operation of end equipment is avoided.
Drawings
FIG. 1 is a schematic diagram of the system connection of the present invention;
FIG. 2 is a circuit diagram of a servo valve according to the present invention;
fig. 3 is a schematic view of the operation principle of the first embodiment of the present invention;
fig. 4 is a circuit diagram of a first servo valve according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating the operation of a second embodiment of the present invention;
fig. 6 is a circuit diagram of a first servo valve according to a second embodiment of the present invention.
In the figure: 1. a first compressor; 2. a second compressor; 3. a condenser; 4. a first exhaust pipe; 5. a second exhaust pipe; 6. a first branch pipe; 7. a second branch pipe; 8. a third branch pipe; 9. a first shut-off valve; 10. a first filter; 11. a first servo valve; 12. a second stop valve; 13. a third stop valve; 14. a second filter; 15. a second servo valve; 16. a fourth stop valve; 17. a dry oil separator; 18. a fourth branch pipe; 19. a throttle valve; 20. an evaporator; 21. a fifth branch pipe; 22. the valve is closed.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a booster system for assisting the operation of a refrigeration system as shown in figures 1-2, which comprises a first compressor 1, a second compressor 2 and a condenser 3, wherein the exhaust end of the first compressor 1 is connected with a first exhaust pipe 4, the exhaust end of the second compressor 2 is connected with a second exhaust pipe 5, the first exhaust pipe 4 and the second exhaust pipe 5 are connected in parallel to form a first branch pipe 6, the first branch pipe 6 is divided into a second branch pipe 7 and a third branch pipe 8 by a tee pipe fitting, the second branch pipe 7 is sequentially provided with a first stop valve 9, a first filter 10, a first servo valve 11 and a second stop valve 12 according to the medium flow direction, the condenser 3 is connected with the tail end of the second branch pipe 7, the third branch pipe 8 is sequentially provided with a third stop valve 13, a second filter 14, a second servo valve 15 and a fourth stop valve 16 according to the medium flow direction, the tail end of the third branch pipe 8 is connected with a dry-type oil separator 17, the outlet of the condenser 3 is connected with a fourth branch pipe 18, a throttle valve 19 is installed on the fourth branch pipe 18, the tail end of the fourth branch pipe 18 is connected with an evaporator 20, the outlet end of the evaporator 20 is connected with the air suction ends of the first compressor 1 and the second compressor 2 respectively after being branched by a tee pipe, the outlet of the dry-type oil separator 17 is connected with a fifth branch pipe 21, and the tail end of the fifth branch pipe 21 is connected with the evaporator 20.
The air suction end and the air discharge end of the first compressor 1 and the air suction end and the air discharge end of the second compressor 2 are both provided with the shutoff valve 22, the shutoff valve 22 is convenient for shutting off corresponding pipelines, and the operation of one group of compressors in the first compressor 1 or the second compressor 2 is convenient to realize, so that the first compressor 1 and the second compressor 2 form a mutual standby mode.
The first servo valve 11 and the second servo valve 15 are both pressure-controlled servo valves, and the set values of the first servo valve 11 and the second servo valve 15 are both 0.75-0.85 MPa, so that the corresponding opening pressure of the servo valves can be set conveniently according to the refrigeration requirements, and the use is convenient.
Wherein, the first filter 10 and the second filter 14 are both stainless steel filters, the mesh diameters of the first filter 10 and the second filter 14 are 1mm-2mm, and impurities are filtered.
Example 1
Referring to fig. 3 and 4, under the condition of a small load operation in winter, the opening pressure of the first servo valve 11 is set to be 0.75MPa, when the first compressor 1 operates and the second compressor 2 is closed, the stop valve on the fifth branch pipe 21 is closed, the gas discharged from the first compressor 1 sequentially passes through the first branch pipe 6 and the second branch pipe 7 and is collected in front of the valve of the first servo valve 11, when the pressure before the valve reaches the set value of 0.75MPa of the first servo valve 11, the first servo valve 11 is opened, the refrigerant gas reaching the pressure of 0.75MPa enters the condenser 3 through the second branch pipe 7 for condensation, the condensed refrigerant enters the evaporator 20 for evaporation after passing through the fourth branch pipe 18 and the throttle valve 19 installed on the fourth branch pipe 18, the evaporated refrigerant is sucked from the suction end of the first compressor 1 and returns to the first compressor 1, and the refrigeration cycle is completed.
Example 2
Referring to fig. 5 and 6, under the low load operation condition in winter, the opening pressure of the first servo valve 11 is set to 0.85MPa, the first compressor 1 is closed, the stop valve on the fifth branch pipe 21 is closed when the second compressor 2 operates, the gas discharged from the second compressor 2 sequentially passes through the first branch pipe 6 and the second branch pipe 7 and is collected in front of the valve of the first servo valve 11, when the pressure before the valve reaches the set value of 0.85MPa of the first servo valve 11, the first servo valve 11 is opened, the refrigerant gas reaching the pressure of 0.85MPa enters the condenser 3 through the second branch pipe 7 for condensation, the condensed refrigerant enters the evaporator 20 for evaporation after passing through the fourth branch pipe 18 and the throttle valve 19 installed on the fourth branch pipe 18, the evaporated refrigerant is sucked from the suction end of the second compressor 2 and returns to the second compressor 2, and the refrigeration cycle is completed.
The utility model discloses in normal refrigerating system, simple and convenient pressure of setting for the servo valve for refrigerant gas gathers the pressure boost before the servo valve, and the refrigerant gas that reaches the setting just can promote the servo valve and open, and the carminative pressure boost of compressor in the simple and convenient realization light load operation avoids the exhaust pressure to hang down excessively and causes the emergence of the unable operational aspect of end equipment.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or some features may be substituted by equivalent features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention are within the scope of the present invention.
Claims (4)
1. A supercharging system for assisting the operation of a refrigeration system comprising a first compressor (1), a second compressor (2) and a condenser (3), characterized in that: the exhaust end of the first compressor (1) is connected with a first exhaust pipe (4), the exhaust end of the second compressor (2) is connected with a second exhaust pipe (5), the first exhaust pipe (4) and the second exhaust pipe (5) are connected in parallel to form a first branch pipe (6), the first branch pipe (6) is divided into a second branch pipe (7) and a third branch pipe (8) through a three-way pipe, a first stop valve (9), a first filter (10), a first servo valve (11) and a second stop valve (12) are sequentially installed on the second branch pipe (7) according to the medium flow direction, the condenser (3) is connected to the tail end of the second branch pipe (7), a third stop valve (13), a second filter (14), a second servo valve (15) and a fourth stop valve (16) are sequentially installed on the third branch pipe (8) according to the medium flow direction, and the tail end of the third branch pipe (8) is connected with a dry-type oil separator (17), the outlet of the condenser (3) is connected with a fourth branch pipe (18), a throttle valve (19) is installed on the fourth branch pipe (18), the tail end of the fourth branch pipe (18) is connected with an evaporator (20), the outlet end of the evaporator (20) is connected with the air suction ends of the first compressor (1) and the second compressor (2) respectively after being shunted through a three-way pipe, the outlet of the dry-type oil separator (17) is connected with a fifth branch pipe (21), and the tail end of the fifth branch pipe (21) is connected with the evaporator (20).
2. A booster system for assisting in the operation of a refrigeration system as set forth in claim 1, wherein: and the air suction end and the air discharge end of the first compressor (1) and the air suction end and the air discharge end of the second compressor (2) are provided with a shut-off valve (22).
3. A booster system for assisting in the operation of a refrigeration system as set forth in claim 1, wherein: the first servo valve (11) and the second servo valve (15) are both pressure-controlled servo valves, and the set values of the first servo valve (11) and the second servo valve (15) are both 0.75MPa-0.85 MPa.
4. A booster system for assisting in the operation of a refrigeration system as set forth in claim 1, wherein: the first filter (10) and the second filter (14) are both stainless steel filters, and the mesh diameters of the first filter (10) and the second filter (14) are 1-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921598299.XU CN210624987U (en) | 2019-09-24 | 2019-09-24 | Boosting system for assisting operation of refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921598299.XU CN210624987U (en) | 2019-09-24 | 2019-09-24 | Boosting system for assisting operation of refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210624987U true CN210624987U (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921598299.XU Expired - Fee Related CN210624987U (en) | 2019-09-24 | 2019-09-24 | Boosting system for assisting operation of refrigeration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7239857B1 (en) | 2021-09-30 | 2023-03-15 | ダイキン工業株式会社 | air conditioner |
-
2019
- 2019-09-24 CN CN201921598299.XU patent/CN210624987U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7239857B1 (en) | 2021-09-30 | 2023-03-15 | ダイキン工業株式会社 | air conditioner |
| WO2023053577A1 (en) * | 2021-09-30 | 2023-04-06 | ダイキン工業株式会社 | Air conditioner |
| JP2023051139A (en) * | 2021-09-30 | 2023-04-11 | ダイキン工業株式会社 | air conditioner |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200526 Termination date: 20210924 |
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| CF01 | Termination of patent right due to non-payment of annual fee |