CN211739528U - Multi-split VRV device for machine room - Google Patents
Multi-split VRV device for machine room Download PDFInfo
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- CN211739528U CN211739528U CN201922303634.5U CN201922303634U CN211739528U CN 211739528 U CN211739528 U CN 211739528U CN 201922303634 U CN201922303634 U CN 201922303634U CN 211739528 U CN211739528 U CN 211739528U
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Abstract
The utility model relates to a multi-split VRV device for machine room, which comprises a variable frequency compressor, an air-cooled condenser, a water-cooled heat exchanger, a water-cooled solenoid valve, an air-cooled solenoid valve, a temperature sensor and a plurality of terminals, wherein the water-cooled solenoid valve is arranged on a pipeline communicated with the variable frequency compressor and the water-cooled heat exchanger; the air-cooled electromagnetic valve is arranged on a pipeline communicated with the variable frequency compressor and the air-cooled condenser; the tail ends of the temperature sensors are respectively communicated with outlets of refrigerants in the water-cooling heat exchanger and the air-cooling condenser through pipelines, and the temperature sensors are arranged outdoors and used for measuring the temperature of outdoor air. The refrigeration efficiency of a plurality of tail ends is improved, and the shutdown risk of the VRV of the multi-split air conditioner is reduced; the running deviation of the refrigeration system from the running curve of the system is reduced, the condition that the running service life of a refrigeration part is reduced, and the refrigeration system has the advantages of improving the efficiency of the refrigeration system and increasing the reliability of the refrigeration system.
Description
Technical Field
The utility model belongs to the technical field of the cooling of the multi-online machine is used to the computer lab and specifically relates to a VRV device is online with multi-online to the computer lab.
Background
At present, increasingly strong energy conservation and emission reduction and green environmental protection requirements worldwide put forward higher requirements on energy consumption and cold quantity requirements of data centers in subway operation and IT industries; the reliability and stability of energy conservation and refrigeration system operation have become a primary appeal to industry owners and design builders.
The conventional multi-online VRV operation system is single and cannot meet the operation modes of various conditions of equipment rooms, and under the general conditions, the machine room and the subway equipment room are both in terminal refrigeration, so that the system is different from the conventional household and commercial multi-online VRV system in a certain way and has no terminal heating condition. The VRV device of the air-cooled multi-split air conditioner has the main defects that when the temperature is high in summer, the condensing pressure is too high due to too high outdoor temperature, the refrigerating efficiency is reduced, and the refrigerating capacity does not meet the requirements of equipment rooms; the VRV device of the multi-split air conditioning system mainly has the defects that the outdoor temperature is too low in winter, the water-cooling inlet water temperature is possibly low, the condensation pressure of the refrigerant is too low when heat exchange is carried out with the refrigerant, the whole multi-split air conditioning system is possibly out of a theoretical pressure curve deviating from the operation of the system, the efficiency of the refrigerating system is reduced due to long-term operation, the service life of a refrigerating part is shortened, and the reliability of the refrigerating system is greatly reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a computer lab is with many online VRV devices, has the advantage that helps improving refrigerating system efficiency, increase refrigerating system reliability.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a VRV device for a machine room comprises a variable frequency compressor, an air-cooled condenser, a water-cooled heat exchanger, a water-cooled electromagnetic valve, an air-cooled electromagnetic valve, a temperature sensor and a plurality of tail ends, wherein the water-cooled electromagnetic valve is arranged on a pipeline communicated with the variable frequency compressor and the water-cooled heat exchanger; the air-cooled electromagnetic valve is arranged on a pipeline communicated with the variable frequency compressor and the air-cooled condenser; the tail ends of the temperature sensors are respectively communicated with outlets of refrigerants in the water-cooling heat exchanger and the air-cooling condenser through pipelines, and the temperature sensors are arranged outdoors and used for measuring the temperature of outdoor air.
By adopting the technical scheme, the temperature sensor collects the outdoor temperature and adopts different operation modes according to different outdoor temperatures. Namely, when the temperature is high, the water-cooling electromagnetic valve is opened and the air-cooling electromagnetic valve is closed, and the refrigerant is conveyed to the water-cooling heat exchanger through the variable frequency compressor for cooling, so that the condensation temperature of the refrigerant is reduced, the refrigeration efficiency of a plurality of tail ends is improved, and the shutdown risk of the VRV of the multi-split air conditioner is reduced; when the temperature is low, the water-cooling electromagnetic valve is closed and the air-cooling electromagnetic valve is opened, and the refrigerant is conveyed to the air-cooling condenser through the variable frequency compressor for cooling, so that the operation curve of the refrigeration system deviating from the system is reduced, and the condition that the operation life of the refrigeration part is reduced. This helps to improve the efficiency and reliability of the refrigeration system.
The present invention may be further configured in a preferred embodiment as: the refrigerant pump, the compression electromagnetic valve and the pump electromagnetic valve are further included, and the compression electromagnetic valve is arranged on a pipeline into which refrigerant enters in the variable frequency compressor; the pump solenoid valve is arranged on a pipeline for the refrigerant to enter in the refrigerant pump.
By adopting the technical scheme, different power mechanisms are adopted to convey the refrigerant according to different outdoor temperatures, namely the compression electromagnetic valve is opened and the pump electromagnetic valve is closed, and the refrigerant is conveyed to the water-cooling heat exchanger or the air-cooling condenser through the variable frequency compressor; and closing the compression electromagnetic valve and opening the pump electromagnetic valve, and conveying the refrigerant to the air-cooled condenser through the refrigerant pump. The refrigerant pump is adopted to provide power for the circulation reciprocation of the refrigerant, so that energy can be saved, and the natural refrigerant is fully utilized.
The present invention may be further configured in a preferred embodiment as: the high-pressure sensor is arranged on an output pipeline of a refrigerant in the variable-frequency compressor and used for collecting the real-time pressure of the refrigerant output from the variable-frequency compressor.
By adopting the technical scheme, the high-pressure sensor collects the pressure of the refrigerant output frequency conversion compressor, and the opening of the water-cooling heat exchanger actuator and the rotating speed of the outdoor fan of the air-cooling condenser are adjusted according to the pressure of the refrigerant, so that the water flow of the water-cooling heat exchanger and the air flow of the air-cooling condenser are adjusted, the running deviation running curve of the refrigerating system is reduced, and the condition that the running service life of a refrigerating part is reduced.
The present invention may be further configured in a preferred embodiment as: the compressor also comprises a gas-liquid separator which is arranged on an inlet pipeline of a refrigerant in the variable frequency compressor.
By adopting the technical scheme, the gas-liquid separator separates out the liquid part in the refrigerant, and if the liquid refrigerant enters the variable frequency compressor, the variable frequency compressor is easily damaged.
The present invention may be further configured in a preferred embodiment as: the oil separator is arranged on an output pipeline of a refrigerant in the variable frequency compressor.
By adopting the technical scheme, the oil separator separates out the lubricating oil in the refrigerant, and the lubricating oil consumed by the variable frequency compressor is supplemented to a certain extent.
The present invention may be further configured in a preferred embodiment as: and a plurality of input pipelines at the tail ends are provided with electronic expansion valves.
By adopting the technical scheme, the regulation and control are very easy through the electronic expansion valve according to the cold quantity requirement of each tail end.
The present invention may be further configured in a preferred embodiment as: the low-pressure sensor is arranged on an inlet pipeline of a refrigerant in the variable-frequency compressor.
By adopting the technical scheme, the suction superheat degree of the inverter compressor is controlled according to the pressure input by the refrigerant, and the suction superheat degree of the air conditioner is usually referred to a condenser and refers to the difference between the saturation temperature corresponding to the pressure of the refrigerant at a certain point of an outlet of the condenser and the actual temperature of the refrigerant.
The present invention may be further configured in a preferred embodiment as: and the variable frequency compressor, the refrigerant pump, the air-cooled condenser and the water-cooled heat exchanger are all provided with one-way valves on output pipelines of refrigerants.
By adopting the technical scheme, the one-way valve can reduce the backflow of the desert into the equipment through the pipeline where the desert is located.
To sum up, the utility model discloses a following at least one useful technological effect:
1. and collecting the outdoor temperature, and adopting different operation modes for different outdoor temperatures. Namely, at high temperature, a water cooling operation mode is adopted, so that the condensation temperature of a refrigerant is reduced, the refrigeration efficiency is improved, and the shutdown risk of the VRV of the multi-split air conditioning unit is reduced; in low temperature, an air cooling operation mode is adopted, so that the operation deviation of a refrigeration system from the operation curve of the system is reduced, and the condition of reducing the operation service life of a refrigeration part is reduced;
2. the refrigerant is conveyed by different power mechanisms according to different outdoor temperatures, and the refrigerant pump is adopted to provide power for the circulation reciprocation of the refrigerant, so that energy can be saved, and natural refrigerants are fully utilized;
3. the pressure of the refrigerant output variable frequency compressor is collected, the water flow of the water-cooling heat exchanger and the air flow of the air-cooling condenser are adjusted according to the pressure of the refrigerant, the running deviation running curve of the refrigerating system is reduced, and the condition that the running service life of a refrigerating part is shortened is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure, 1, an inverter compressor; 2. an air-cooled condenser; 3. a water-cooled heat exchanger; 4. a water-cooled electromagnetic valve; 5. an air-cooled electromagnetic valve; 6. a temperature sensor; 7. a terminal end; 8. a refrigerant pump; 9. compressing the electromagnetic valve; 10. a pump solenoid valve; 11. a high pressure sensor; 12. an oil separator; 13. an outdoor fan; 14. an electronic expansion valve; 15. a gas-liquid separator; 16. a low pressure sensor; 17. an actuator; 18. a one-way valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A VRV device for a machine room comprises a variable frequency compressor 1, an air-cooled condenser 2, a water-cooled heat exchanger 3, a water-cooled electromagnetic valve 4, an air-cooled electromagnetic valve 5, a temperature sensor 6 and a plurality of tail ends 7, wherein the water-cooled electromagnetic valve 4 is arranged on a pipeline through which the variable frequency compressor 1 is communicated with the water-cooled heat exchanger 3; the air-cooled electromagnetic valve 5 is arranged on a pipeline communicated with the variable frequency compressor 1 and the air-cooled condenser 2; the refrigerant inlets of the plurality of tail ends 7 are respectively communicated with the outlets of the refrigerants in the water-cooling heat exchanger 3 and the air-cooling condenser 2 through pipelines, and the temperature sensor 6 is arranged outdoors and used for measuring the temperature of outdoor air. Wherein, end 7 is indoor air conditioner, and the quantity of end 7 can set up according to the demand, and end 7 has four in this embodiment, provides cold volume for computer lab or subway equipment room etc. through end 7.
The refrigerant outlets of the plurality of terminals 7 are respectively communicated with the refrigerant inlet of the inverter compressor 1 through pipelines, so that the refrigerant circulates among the refrigeration system, the terminals 7 and the inverter compressor 1. The temperature sensor 6 collects outdoor temperature and adopts different operation modes according to different outdoor temperatures. Namely, at high temperature, the water-cooling electromagnetic valve 4 is opened and the air-cooling electromagnetic valve 5 is closed, and the refrigerant is conveyed to the water-cooling heat exchanger 3 through the variable frequency compressor 1 for cooling; and at low temperature, closing the water-cooling electromagnetic valve 4 and opening the air-cooling electromagnetic valve 5, and conveying the refrigerant to the air-cooling condenser 2 for cooling through the variable frequency compressor 1. The input pipelines of the plurality of tail ends 7 are respectively provided with an electronic expansion valve 14, and the refrigeration quantity requirement of each tail end 7 is regulated and controlled through the electronic expansion valves 14.
The refrigerant pump 8, the compression electromagnetic valve 9 and the pump electromagnetic valve 10 are further included, and the compression electromagnetic valve 9 is arranged on a pipeline into which refrigerant enters in the variable frequency compressor 1; a pump solenoid valve 10 is provided in the pipe into which the refrigerant enters in the refrigerant pump 8. In this embodiment, the refrigerant inlet of the refrigerant pump 8 is respectively communicated with the refrigerant outlets of the plurality of terminals 7 through a pipeline, and the refrigerant outlet of the refrigerant pump 8 is respectively communicated with the refrigerant inlets of the water-cooled heat exchanger 3 and the air-cooled condenser 2 through pipelines. According to different outdoor temperatures, different power mechanisms are adopted to convey the refrigerant, namely a compression electromagnetic valve 9 is opened and a pump electromagnetic valve 10 is closed, and the refrigerant is conveyed to a water-cooling heat exchanger 3 or an air-cooling condenser 2 through a variable frequency compressor 1; the compression solenoid valve 9 is closed and the pump solenoid valve 10 is opened, and the refrigerant is delivered to the air-cooled condenser 2 by the refrigerant pump 8. The refrigerant pump 8 is adopted to provide power for the circulation reciprocation of the refrigerant, so that energy can be saved, and the natural refrigerant is fully utilized. In other embodiments, the refrigerant pump 8 may be disposed on a pipe connecting the refrigerant outlet of the air-cooled condenser 2 and the refrigerant inlet of the end 7.
The system also comprises a high-pressure sensor 11, wherein the high-pressure sensor 11 is arranged on an output pipeline of the refrigerant in the variable-frequency compressor 1 and is used for acquiring the real-time pressure of the refrigerant output from the variable-frequency compressor 1; the opening degree of an actuator 17 in the water-cooling heat exchanger 3 and the rotating speed of an outdoor fan 13 in the air-cooling condenser 2 are adjusted according to the pressure output by the refrigerant, so that the water flow of the water-cooling heat exchanger 3 and the air flow of the air-cooling condenser 2 are adjusted. The system also comprises a low-pressure sensor 16, wherein the low-pressure sensor 16 is arranged on an inlet pipeline of the refrigerant in the variable-frequency compressor 1 and is used for acquiring the real-time pressure of the refrigerant input into the variable-frequency compressor 1; the suction superheat degree of the inverter compressor 1 is controlled according to the pressure input by a refrigerant, and the suction superheat degree of the air conditioner, which is usually specific to a condenser, refers to a difference value between a saturation temperature corresponding to the pressure of the refrigerant at a certain point of an outlet of the condenser and an actual temperature of the refrigerant, wherein the saturation temperature corresponding to the pressure of the refrigerant and the actual temperature of the refrigerant are used as calculation methods in the prior art and are not elaborated herein in detail.
The system also comprises an oil separator 12 and a gas-liquid separator 15, wherein the oil separator 12 is arranged on an output pipeline of the refrigerant in the variable-frequency compressor 1, and the gas-liquid separator 15 is arranged on an inlet pipeline of the refrigerant in the variable-frequency compressor 1. The liquid part in the refrigerant is separated through the gas-liquid separator 15, if the liquid refrigerant enters the inverter compressor 1, the inverter compressor 1 is easily damaged, namely, the gas-liquid separator 15 and the low-pressure sensor 16 are used for carrying out double protection on the inverter compressor 1; the lubricating oil in the refrigerant is separated by the oil separator 12, and the lubricating oil consumed by the inverter compressor 1 is supplemented to a certain extent. The output pipelines of the refrigerant in the variable frequency compressor 1, the refrigerant pump 8, the air-cooled condenser 2 and the water-cooled heat exchanger 3 are all provided with check valves 18, and the backflow of the refrigerant can be prevented through the check valves 18.
The implementation principle of the above embodiment is as follows: when the temperature is high, the water cooling electromagnetic valve 4 and the compression electromagnetic valve 9 are opened, the air cooling electromagnetic valve 5 and the pump electromagnetic valve 10 are closed, the variable frequency compressor 1 is started, the refrigerant enters the water cooling heat exchanger 3 through the oil separator 12 to reduce the temperature, then enters the tail end 7 to provide cooling capacity for a machine room or a subway equipment room and the like, and finally returns to the variable frequency compressor 1 through the gas-liquid separator 15. When the temperature is low, the air cooling electromagnetic valve 5 and the compression electromagnetic valve 9 are opened, the water cooling electromagnetic valve 4 and the pump electromagnetic valve 10 are closed, the variable frequency compressor 1 is started, the refrigerant enters the air cooling condenser 2 through the oil separator 12 to reduce the temperature, then enters the tail end 7 to provide cooling capacity for a machine room or a subway equipment room and the like, and finally returns to the variable frequency compressor 1 through the gas-liquid separator 15. When the outdoor temperature is too low, the air cooling electromagnetic valve 5 and the pump electromagnetic valve 10 are opened, the water cooling electromagnetic valve 4 and the compression electromagnetic valve 9 are closed, the refrigerant pump 8 is started, the refrigerant enters the air cooling condenser 2 to reduce the temperature, then enters the tail end 7 to provide cooling capacity for a machine room or a subway equipment room and the like, and finally returns to the refrigerant pump 8.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a computer lab is with many online VRV devices which characterized in that: the variable frequency compressor temperature control system comprises a variable frequency compressor (1), an air-cooled condenser (2), a water-cooled heat exchanger (3), a water-cooled electromagnetic valve (4), an air-cooled electromagnetic valve (5), a temperature sensor (6) and a plurality of tail ends (7), wherein the water-cooled electromagnetic valve (4) is arranged on a pipeline through which the variable frequency compressor (1) is communicated with the water-cooled heat exchanger (3); the air-cooled electromagnetic valve (5) is arranged on a pipeline communicated with the variable frequency compressor (1) and the air-cooled condenser (2); the tail ends (7) are respectively communicated with outlets of refrigerants in the water-cooling heat exchanger (3) and the air-cooling condenser (2) through pipelines, and the temperature sensor (6) is arranged outdoors and used for measuring the temperature of outdoor air.
2. The multi-split VRV device for the machine room as claimed in claim 1, wherein: the refrigerant pump (8), the compression electromagnetic valve (9) and the pump electromagnetic valve (10) are further included, and the compression electromagnetic valve (9) is arranged on a pipeline for the refrigerant to enter in the variable frequency compressor (1); the pump solenoid valve (10) is arranged on a pipeline for the refrigerant to enter in the refrigerant pump (8).
3. The multi-split VRV device for the machine room as claimed in claim 1, wherein: the device is characterized by further comprising a high-pressure sensor (11), wherein the high-pressure sensor (11) is arranged on an output pipeline of a refrigerant in the variable-frequency compressor (1) and used for collecting the real-time pressure of the refrigerant output from the variable-frequency compressor (1).
4. The multi-split VRV device for the machine room as claimed in claim 1, wherein: the variable-frequency compressor is characterized by further comprising a gas-liquid separator (15), wherein the gas-liquid separator (15) is arranged on an inlet pipeline of a refrigerant in the variable-frequency compressor (1).
5. The multi-split VRV device for the machine room as claimed in claim 4, wherein: the variable-frequency compressor further comprises an oil separator (12), wherein the oil separator (12) is arranged on an output pipeline of a refrigerant in the variable-frequency compressor (1).
6. The multi-split VRV device for the machine room as claimed in claim 1, wherein: and electronic expansion valves (14) are arranged on the input pipelines of the tail ends (7).
7. The multi-split VRV device for the machine room as claimed in claim 1, wherein: the variable-frequency compressor further comprises a low-pressure sensor (16), wherein the low-pressure sensor (16) is arranged on an inlet pipeline of a refrigerant in the variable-frequency compressor (1).
8. The multi-split VRV device for the machine room as claimed in claim 2, wherein: and the variable frequency compressor (1), the refrigerant pump (8), the air-cooled condenser (2) and the water-cooled heat exchanger (3) are all provided with one-way valves (18) on output pipelines of refrigerants.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922303634.5U CN211739528U (en) | 2019-12-19 | 2019-12-19 | Multi-split VRV device for machine room |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922303634.5U CN211739528U (en) | 2019-12-19 | 2019-12-19 | Multi-split VRV device for machine room |
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| CN211739528U true CN211739528U (en) | 2020-10-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986406A (en) * | 2019-12-19 | 2020-04-10 | 依米康科技集团股份有限公司 | Multi-split VRV device for machine room, control method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986406A (en) * | 2019-12-19 | 2020-04-10 | 依米康科技集团股份有限公司 | Multi-split VRV device for machine room, control method and system |
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