CN217236016U - Multi-connected fluorine pump system - Google Patents
Multi-connected fluorine pump system Download PDFInfo
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- CN217236016U CN217236016U CN202220394834.5U CN202220394834U CN217236016U CN 217236016 U CN217236016 U CN 217236016U CN 202220394834 U CN202220394834 U CN 202220394834U CN 217236016 U CN217236016 U CN 217236016U
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Abstract
The utility model discloses a multi-connected fluorine pump system, which comprises an outdoor host and an indoor terminal, wherein the number of the outdoor hosts is multiple; the indoor end is a multi-coil heat exchanger, and each coil is correspondingly connected with an outdoor host; the indoor tail end, the second ball valve, the intermediate heat exchanger, the first ball valve, the liquid storage device and the second refrigerant pump form a secondary side refrigeration cycle, the intermediate heat exchanger, the compressor, the condenser, the first refrigerant pump and the electronic expansion valve form a primary side refrigeration cycle, the compressor is connected with a first bypass provided with a first check valve in parallel, and the first refrigerant pump is connected with a second bypass provided with a second check valve in parallel; the primary side refrigeration cycle and the secondary side refrigeration cycle exchange heat in the intermediate heat exchanger. In the utility model, the outdoor hosts are backups for each other, and the coil pipes at the indoor end are backups for each other, so that the system has high stability and reliability; when the multi-chamber external host works simultaneously, the unit operates under partial load, the system has high energy efficiency and low power consumption.
Description
Technical Field
The utility model relates to an air conditioning equipment, concretely relates to many fluorine pump systems that ally oneself with.
Background
With the development of data center scale and integration, the power density of IT equipment in the server is increasing day by day, and the heat density is increasing dramatically. On one hand, the electric power consumed by the refrigeration equipment is rapidly increased, and the energy consumption problem of a machine room is more and more concerned; on the other hand, the problem of server heat dissipation becomes more and more serious, and even a shutdown condition caused by equipment heating occurs, which puts higher requirements on the reliability of the air conditioning system of the machine room.
Disclosure of Invention
The purpose of the invention is as follows: the utility model aims at providing an energy-conserving and reliable and stable many fluorine pump systems that ally oneself with.
The technical scheme is as follows: the utility model discloses a multi-connected fluorine pump system, which comprises an outdoor host and an indoor terminal, wherein the number of the outdoor hosts is multiple; the indoor end is a multi-coil heat exchanger, and each coil is correspondingly connected with an outdoor host.
In the utility model, the outdoor hosts are backups for each other, and the coil pipes at the indoor end are backups for each other, so that the damage of one outdoor host or one coil pipe can not influence the operation of the whole system, thereby improving the stability and reliability of the system; the system can meet the requirement of cooling capacity when working under a single coil pipe single outdoor host, and when a plurality of outdoor hosts work simultaneously, the unit runs under partial load, so that the system has high energy efficiency and low power consumption.
Further, the outdoor main machine comprises an intermediate heat exchanger, a compressor, a condenser, a first refrigerant pump, an electronic expansion valve, a first ball valve, a second ball valve, a liquid storage device and a second refrigerant pump; the indoor tail end, the second ball valve, the intermediate heat exchanger, the first ball valve, the liquid storage device and the second refrigerant pump form a secondary side refrigeration cycle, the intermediate heat exchanger, the compressor, the condenser, the first refrigerant pump and the electronic expansion valve form a primary side refrigeration cycle, the compressor is connected with a first bypass provided with a first check valve in parallel, and the first refrigerant pump is connected with a second bypass provided with a second check valve in parallel; the primary-side refrigeration cycle and the secondary-side refrigeration cycle exchange heat in the intermediate heat exchanger.
In the technical scheme, the refrigerant on the primary side and the refrigerant on the secondary side are separated through the intermediate heat exchanger, the oil return problem of a refrigeration system under a long pipeline and high-altitude difference and the refrigerant distribution problem of a multi-split air-conditioning system are solved, the applicability is high, and the longer one-way pipe and the larger negative-altitude difference can be realized. There are three modes of operation on the primary side: a compressor cooling operation mode; a compressor and refrigerant pump mixed refrigeration operation mode; a refrigerant pump operating mode; when the outdoor temperature is low, namely winter and transition seasons, the first refrigerant pump partially or completely replaces the compressor to work, a natural cold source is fully utilized, and the power of the compressor is generally more than 10kW, and the power of the refrigerant pump is less than 1kW, so that the power consumption of the unit can be saved. The utility model discloses compare with conventional air cooling system, the annual energy efficiency ratio can improve more than 50%.
Further, the second refrigerant pump is connected with a third refrigerant pump in parallel, and two ends of the second refrigerant pump and two ends of the third refrigerant pump are respectively connected with the inlet ball valve and the outlet ball valve in series. The second refrigerant pump and the third refrigerant pump are mutually backup, when one pump fails, the other pump works normally, the system operation is not influenced, and the stability and the reliability of the system can be further improved.
Further, the intermediate heat exchanger is a plate heat exchanger or a sleeve heat exchanger.
Further, the compressor adopts a variable frequency compressor.
Further, the compressor is a single compressor or two compressors connected in parallel, and is determined according to different cold quantities.
Furthermore, the air inlet of the condenser is provided with a wet film device, so that the air inlet temperature of the condenser can be reduced, the condensation efficiency is improved, and the natural cold source is further fully utilized.
Further, the number of the indoor ends is multiple, and the multiple indoor ends are connected in parallel.
Has the advantages that: compared with the prior art, the utility model, have following advantage: in the utility model, the outdoor hosts are backups for each other, and the coil pipes at the indoor end are backups for each other, so that the system has high stability and reliability; when the multi-chamber external host works simultaneously, the unit operates under partial load, the system has high energy efficiency and low power consumption.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is an energy efficiency curve of the unit under different loads.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the multi-connected fluorine pump system includes two outdoor hosts a and two indoor terminals B, where the indoor terminals B are double-coil heat exchangers including a first coil 31 and a second coil 32, the first coil 31 is connected to one outdoor host a, and the second coil 32 is connected to the other outdoor host a.
The outdoor host machine A comprises an intermediate heat exchanger 1, a compressor 3, a condenser 4, a first refrigerant pump 6, an electronic expansion valve 8, a first ball valve 11, a second ball valve 12, a liquid storage device 13 and a second refrigerant pump 14, an indoor tail end B, the second ball valve 12, the intermediate heat exchanger 1, the first ball valve 11, the liquid storage device 13 and the second refrigerant pump 14 form a secondary side refrigeration cycle, the intermediate heat exchanger 1, the compressor 3, the condenser 4, the first refrigerant pump 6 and the electronic expansion valve 8 form a primary side refrigeration cycle, the compressor 3 is connected in parallel with a first bypass provided with a first check valve 2, and the first refrigerant pump 6 is connected in parallel with a second bypass provided with a second check valve 7. The primary-side refrigeration cycle and the secondary-side refrigeration cycle exchange heat in the intermediate heat exchanger 1. Be equipped with condensation fan 5 on the condenser 4, 4 air inlets department of condenser sets up wet film equipment, reduces the inlet air temperature.
In addition, the second refrigerant pump 14 is connected in parallel with a third refrigerant pump 15, the inlet ball valve 22 and the outlet ball valve 21 are connected in series at both ends of the second refrigerant pump 14, and the inlet ball valve 24 and the outlet ball valve 23 are connected in series at both ends of the third refrigerant pump 15. The second refrigerant pump 14 and the third refrigerant pump 15 are used as backup for each other. The two outdoor hosts a also backup each other. The system automatically judges and preferentially starts the refrigerant pump and the outdoor host A with less running time. In this embodiment, both the two coil pipes and the two outdoor hosts a are hot backup, that is, two sets of systems work simultaneously, a single coil pipe and one outdoor host a can meet the requirement of cold capacity, and the two works simultaneously can ensure that each host operates under partial load, at this time, the unit has high energy efficiency, as shown in fig. 2. The intermediate heat exchanger 1 adopts a plate heat exchanger, and the compressor 3 adopts a variable frequency compressor. The number of the indoor terminals B is plural, and the plural indoor terminals B are connected in parallel to each other. The secondary refrigerant liquid condensed from the intermediate heat exchanger 1 sequentially passes through the first ball valve 11, the liquid storage tank 13 and the inlet ball valve, then enters the second refrigerant pump 14 or the third refrigerant pump 15, then passes through the outlet ball valve, and enters the coil pipe at the indoor tail end B for evaporation and heat absorption. The coolant gas returning from the indoor passes through the second ball valve 12 and then enters the intermediate heat exchanger 1 for condensation.
The outdoor host a has three operation modes: a compressor cooling mode; a compressor + refrigerant pump hybrid refrigeration mode; a refrigerant pump cooling mode. In particular, the amount of the solvent to be used,
when the outdoor temperature is higher than the mixed mode starting temperature (default 20 ℃), the unit operates in the compressor refrigeration mode, at this time, the compressor 3 is operated, and the first refrigerant pump 6 is not operated: the refrigerant vapor from the intermediate heat exchanger 1 enters the compressor 3 to be pressurized, becomes high-temperature and high-pressure refrigerant vapor, and then enters the condenser 4 to be cooled and condensed. After passing through the second one-way valve 7, the condensed refrigerant is throttled and depressurized by the electronic expansion valve 8, and then enters the intermediate heat exchanger 1 to be evaporated and absorb heat, so that the whole cycle is formed.
When the outdoor temperature is lower than the mixed mode starting temperature and higher than the fluorine pump starting temperature (default 10 ℃), the unit operates in a compressor and refrigerant pump mixed refrigeration mode, at the moment, the compressor 3 works, and the first refrigerant pump 6 also works: the refrigerant vapor from the intermediate heat exchanger 1 enters the compressor 3 to be pressurized, becomes high-temperature and high-pressure refrigerant vapor, and then enters the condenser 4 to be cooled and condensed. The condensed refrigerant is subcooled, is pressurized by the first refrigerant pump 6, is throttled and depressurized by the electronic expansion valve 8, and then enters the intermediate heat exchanger 1 to be evaporated and absorb heat, so that the whole cycle is formed.
When the outdoor temperature is lower than the fluorine pump starting temperature (default 10 ℃), the unit operates in a refrigerant pump refrigeration mode, the compressor 3 does not work, and the first refrigerant pump 6 works: refrigerant vapor from the intermediate heat exchanger 1 passes through the first check valve 2 and enters the condenser 4 for cooling and condensation. The condensed refrigerant is subcooled, is pressurized by the first refrigerant pump 6, is throttled and depressurized by the electronic expansion valve 8, and then enters the intermediate heat exchanger 1 to be evaporated and absorb heat, so that the whole cycle is formed.
Claims (8)
1. A multi-connected fluorine pump system comprises an outdoor host (A) and an indoor tail end (B), and is characterized in that: the number of the outdoor host machines (A) is multiple; the indoor end (B) is a multi-coil heat exchanger, and each coil is correspondingly connected with an outdoor host (A).
2. The multi-connected fluorine pump system as claimed in claim 1, wherein: the outdoor host machine (A) comprises an intermediate heat exchanger (1), a compressor (3), a condenser (4), a first refrigerant pump (6), an electronic expansion valve (8), a first ball valve (11), a second ball valve (12), a liquid storage device (13) and a second refrigerant pump (14); the indoor tail end (B), the second ball valve (12), the intermediate heat exchanger (1), the first ball valve (11), the liquid storage device (13) and the second refrigerant pump (14) form a secondary side refrigeration cycle, the intermediate heat exchanger (1), the compressor (3), the condenser (4), the first refrigerant pump (6) and the electronic expansion valve (8) form a primary side refrigeration cycle, the compressor (3) is connected with a first bypass provided with a first check valve (2) in parallel, and the first refrigerant pump (6) is connected with a second bypass provided with a second check valve (7) in parallel; the primary-side refrigeration cycle and the secondary-side refrigeration cycle exchange heat in the intermediate heat exchanger (1).
3. The multi-connected fluorine pump system as claimed in claim 2, wherein: the second refrigerant pump (14) is connected with a third refrigerant pump (15) in parallel, and two ends of the second refrigerant pump (14) and two ends of the third refrigerant pump (15) are respectively connected with an inlet ball valve and an outlet ball valve in series.
4. The multi-connected fluorine pump system as claimed in claim 2, wherein: the intermediate heat exchanger (1) adopts a plate heat exchanger or a sleeve heat exchanger.
5. The multi-connected fluorine pump system as claimed in claim 2, wherein: the compressor (3) adopts a variable frequency compressor.
6. A multi-connected fluorine pump system as set forth in claim 2, wherein: the compressor (3) is a single compressor or two compressors connected in parallel.
7. The multi-connected fluorine pump system as claimed in claim 2, wherein: and a wet film device is arranged at the air inlet of the condenser (4).
8. A multi-connected fluorine pump system as claimed in any one of claims 1 to 7, wherein: the number of the indoor terminals (B) is plural, and the plural indoor terminals (B) are connected in parallel with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220394834.5U CN217236016U (en) | 2022-02-25 | 2022-02-25 | Multi-connected fluorine pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220394834.5U CN217236016U (en) | 2022-02-25 | 2022-02-25 | Multi-connected fluorine pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217236016U true CN217236016U (en) | 2022-08-19 |
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ID=82836706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220394834.5U Active CN217236016U (en) | 2022-02-25 | 2022-02-25 | Multi-connected fluorine pump system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217236016U (en) |
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2022
- 2022-02-25 CN CN202220394834.5U patent/CN217236016U/en active Active
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