CN107062688B - Wide Wen Kongleng island type liquid cooler - Google Patents
Wide Wen Kongleng island type liquid cooler Download PDFInfo
- Publication number
- CN107062688B CN107062688B CN201710048851.7A CN201710048851A CN107062688B CN 107062688 B CN107062688 B CN 107062688B CN 201710048851 A CN201710048851 A CN 201710048851A CN 107062688 B CN107062688 B CN 107062688B
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- Prior art keywords
- cooling liquid
- way valve
- cooling
- air cooling
- island
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
Abstract
The invention discloses a wide-temperature air cooling island type liquid cooler which comprises a refrigerating host, an air cooling island group, an intermediate heat exchanger, an external circulating pump, an evaporation side circulating pump, a condensation side circulating pump, a first three-way valve, a second three-way valve, a one-way valve, an evaporation side expansion water tank, a condensation side expansion water tank, an external expansion water tank, a heat load and cooling liquid, wherein a first cooling liquid internal circulating system, a second cooling liquid internal circulating system, a third cooling liquid internal circulating system and a cooling liquid external circulating system are respectively formed. On the basis of a refrigeration host, related components are added, so that effective combination of two cooling modes in a annual environment is realized, and a miniaturized and modularized solution is provided for a large-sized air-cooled liquid chiller.
Description
Technical Field
The invention relates to the field of liquid coolers (or called cold water machines), in particular to a wide-temperature air cooling island type liquid cooler.
Background
Because the liquid cooler has a plurality of characteristics compared with an air conditioner, such as avoiding long-distance transmission of the refrigerant; reducing the likelihood of refrigerant leakage; the cold energy is more conveniently transmitted through cooling liquid (secondary refrigerant); multiple sets of transmission and control are easy to realize, so that rapid development is achieved in recent years. At present, the liquid chiller is widely applied to the fields of power electronics, military and aviation, power stations, medical laser and diagnostic equipment, industrial laser, cabinet cooling, analytical instruments, nuclear power generation, semiconductor equipment, telecommunication fields, supercomputers and the like. In recent years, particularly in the mass appearance of high-power radar transmitter sets, lasers, high-energy weapons and the like, military liquid cooling machines are gradually developed to high power, modularization, energy conservation, safety, environmental protection and the like.
The main purpose of the liquid chiller is to provide a circulating cooling liquid with certain temperature, flow and pressure requirements for a thermal load (object to be cooled). Sometimes, the requirement for the cooling liquid is very high, such as the cleanliness is not lower than 40-100 mu M, the resistivity is not lower than 0.5MΩ & cm-5 MΩ & cm, and the like, if the cooling liquid is directly sent to the evaporation side of the cooling liquid machine to obtain the cooling capacity, too many parts in the chain are easy to cause pollution and cannot reliably work. The liquid chiller with forced air cooling function has the same problems as the cooling liquid is directly sent to the radiator in the liquid chiller for radiating, including harmful substances such as copper, iron ions and the like generated in various devices.
For large (such as megawatt) air-cooled liquid coolers, there are condensation heat exchange modes by adopting a cooling tower, but the mode needs cooling water and a certain evaporation capacity, for example, the evaporation capacity is about 0.5-2% of the circulation capacity, so that the influence on water quality is generated, and continuous water supplementing is needed; on the other hand, the water-soluble fiber is difficult to put into use in winter (for example, the temperature is minus 30 ℃ to minus 45 ℃). In a large power generation place or the like, waste heat is usually discharged by using a large air cooling island, but the function is single. At present, a domestic large-scale air-cooled liquid chiller, such as an air-cooled screw chiller, directly connects exhaust gas of a screw compressor into an air-cooled condenser for heat exchange, and the compressor is difficult to perform refrigeration work in winter, and is usually of a single-cooling type unless a set of forced air cooling system is additionally arranged.
At present, a high-temperature screw unit appears in the market, the temperature of condensed water can reach 80-120 ℃, and the main purpose is to take heat, thereby realizing the full utilization of new energy. In the same way, under the environment of high temperature of 50-60 ℃, the large heat transfer temperature difference clearly provides a necessary condition for miniaturization of the heat exchanger, and a solution can be provided for a large-scale liquid cooler by reasonably designing the evaporation temperature.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a wide-temperature air cooling island type liquid cooler, which effectively combines two cooling modes of refrigeration and forced air cooling of a compressor in the liquid cooler by utilizing the principle of an air cooling island, thereby achieving the purposes of wide temperature, safety, environmental protection, reliability and miniaturization.
The technical scheme of the invention is as follows:
the utility model provides a wide temperature air cooling island formula liquid chiller, includes refrigeration host computer, air cooling island group, intermediate heat exchanger, outer circulating pump, evaporation side circulating pump, condensation side circulating pump, first, two three-way valve, check valve, evaporation side expansion tank, condensation side expansion tank, outside expansion tank, heat load and coolant liquid, its characterized in that: the outlet end of the evaporation side of the refrigeration host is sequentially connected with the expansion water tank, the evaporation side circulating pump, the intermediate heat exchanger and the first three-way valve of the evaporation side, and then is connected with the inlet end of the evaporation side of the refrigeration host to form a first cooling liquid internal circulating system; the outlet end of the condensing side of the refrigeration host is sequentially connected with the expansion water tank, the circulating pump, the one-way valve, the air cooling island group and the second three-way valve of the condensing side, and then is connected with the inlet end of the condensing side of the refrigeration host to form a second cooling liquid internal circulation system; when the refrigeration host is not in operation, the outlet end of the evaporation side circulating pump is connected with the intermediate heat exchanger, the first three-way valve, the air cooling island group, the second three-way valve and the evaporation side expansion water tank in sequence, and then is connected with the inlet end of the evaporation side circulating pump to form a third cooling liquid internal circulating system; the outlet end of the external circulation pump is connected with the heat load, the intermediate heat exchanger and the outer expansion water tank in sequence and then is connected with the inlet end of the external circulation pump to form a cooling liquid external circulation system; the third cooling liquid internal circulation system and the first cooling liquid internal circulation system and the second cooling liquid internal circulation system realize circulation interlocking through the first three-way valve, the second three-way valve and the one-way valve; the first and second cooling liquid internal circulation systems and the cooling liquid external circulation system form a compressor refrigeration mode; the third cooling liquid internal circulation system and the cooling liquid external circulation system form a forced air cooling mode.
The wide Wen Kongleng island type liquid cooler is characterized in that: the air cooling island group is formed by combining a plurality of air cooling heat exchangers and fans in a compressor refrigeration mode and a forced air cooling mode, wherein the air cooling heat exchangers are all of tube-fin type or plate-fin type heat exchanger structures, cooling liquid is filled in the air cooling heat exchangers, and the air cooling island group is formed by modularized parallel combination, so that the air cooling island group does not exclude the need of adding a valve or adopting a variable frequency fan to control each air cooling island according to heat dissipation.
The wide Wen Kongleng island type liquid cooler is characterized in that: the intermediate heat exchanger realizes the isolation of the inner and outer cooling liquid, adopts stainless steel or titanium and other anti-corrosion materials, and ensures the special requirements of heat load on the cleanliness, resistivity and the like of the cooling liquid.
The wide Wen Kongleng island type liquid cooler is characterized in that: the first, second and third cooling liquid internal circulation systems and the cooling liquid external circulation system are all of closed system design, and the open system is not excluded under the condition of the same circulation principle.
The wide Wen Kongleng island type liquid cooler is characterized in that: the first three-way valve and the second three-way valve are electric three-way valves, and can back up the manual function.
The wide Wen Kongleng island type liquid cooler is characterized in that: the cooling liquid is glycol water solution or water.
The invention is further illustrated as follows:
in order to realize energy-saving operation of the product, the third cooling liquid inner circulation system and the cooling liquid outer circulation system are combined, and the formed forced air cooling mode is a priority mode. In winter (such as-30 ℃ to-45 ℃), accurate temperature supply is realized by controlling the air cooling island group. And switching to a compressor refrigeration mode, namely combining the first cooling liquid inner circulation system and the second cooling liquid inner circulation system with the cooling liquid outer circulation system only when the forced air cooling mode cannot meet the requirement of heat load cooling. The switching between the forced air cooling mode and the compressor refrigeration mode can be completed through tolerance design, and frequent switching is avoided.
The refrigerating host can be designed as a single body, and is internally provided with a compressor, a condenser, an expansion valve, an evaporator and the like, and two groups of four interfaces are externally arranged, namely a condensing side inlet, a condensing side outlet, an evaporating side inlet and an evaporating side outlet. The compressor can adopt screw rods, semi-closed type and the like according to the refrigerating capacity. The condenser and the evaporator can adopt shell-and-tube type, plate type and other heat exchangers. The specific design of the refrigeration host is not the scope of protection of this patent.
The first, second and third cooling liquid internal circulation systems and the cooling liquid external circulation system are preferably closed circulation to avoid external pollution, and the constant pressure, pressure relief, liquid supplementing, liquid discharging and other additional designs of the system are realized. The constant pressure value is always consistent because of the switching among the first, second and third cooling liquid internal circulation systems. This patent does not exclude the first, second, third coolant inner circulation systems and coolant outer circulation systems from being changed to open systems, which is not exclusive of the present patent protection.
The invention has the beneficial effects that:
1. on the basis of a refrigeration host, related components are added, so that effective combination of two cooling modes in a annual environment is realized, and a miniaturized and modularized solution is provided for a large-sized air-cooled liquid chiller.
2. The invention adopts the design mode of 'air cooling island', uses the cooling liquid inside, is convenient to be independently arranged outside, avoids the adverse factors of high pressure, easy leakage or serious loss after leakage and the like caused by the input of the refrigerant into the air cooling heat exchanger, and improves the safe operation of the refrigeration host.
3. The invention adopts an intermediate heat exchanger mode to provide a relatively independent and closed circulating system for the load, thereby ensuring the special requirements of the cleanliness, the resistivity and the like of the cooling liquid.
4. The invention realizes the most energy-saving operation of the equipment by preferentially starting the forced air cooling mode.
5. The invention has simple and novel principle, is convenient for module design and is easy to realize.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Fig. 2 shows a special evolution example of the system principle of the invention.
Detailed Description
Referring to fig. 1, a wide temperature air cooling island type liquid chiller comprises a refrigeration host 7, an air cooling island group 11, an intermediate heat exchanger 1, an external circulation pump 3, an evaporation side circulation pump 5, a condensation side circulation pump 9, a first three-way valve 6, a second three-way valve 12, a one-way valve 10, an evaporation side expansion water tank 8, a condensation side expansion water tank 13, an outer expansion water tank 2, a heat load 4 and cooling liquid, wherein an outlet end of an evaporation side 7.1 of the refrigeration host 7 is sequentially connected with the evaporation side expansion water tank 8, the evaporation side circulation pump 5, the intermediate heat exchanger 1 and the first three-way valve 6, and then is connected with an inlet end of the evaporation side 7.1 of the refrigeration host 7 to form a first cooling liquid internal circulation system; the outlet end of the condensing side 7.2 of the refrigeration host 7 is sequentially connected with a condensing side expansion water tank 13, a condensing side circulating pump 9, a one-way valve 10, an air cooling island group 11 and a second three-way valve 12, and then is connected with the inlet end of the condensing side 7.2 of the refrigeration host 7 to form a second cooling liquid internal circulation system; when the refrigeration host 7 does not work, the outlet end of the evaporation side circulating pump 5 is connected with the intermediate heat exchanger 1, the first three-way valve 6, the air cooling island group 11, the second three-way valve 12 and the evaporation side expansion water tank 8 in sequence, and then is connected with the inlet end of the evaporation side circulating pump 5 to form a third cooling liquid internal circulating system; the outlet end of the external circulation pump 3 is connected with the heat load 4, the intermediate heat exchanger 1 and the external expansion water tank 2 in sequence and then is connected with the inlet end of the external circulation pump 3 to form a cooling liquid external circulation system; the third cooling liquid internal circulation system is in circulation interlocking with the first cooling liquid internal circulation system and the second cooling liquid internal circulation system through the first three-way valve 6 and the second three-way valve 12 and the one-way valve 10; the first and second cooling liquid internal circulation systems and the cooling liquid external circulation system form a compressor refrigeration mode; the third cooling liquid inner circulation system and the cooling liquid outer circulation system form a forced air cooling mode.
In the invention, the air cooling island group 11 participates in working in a compressor refrigeration mode and a forced air cooling mode, and is formed by combining a plurality of air cooling heat exchangers 11.2 and fans 11.1, wherein the plurality of air cooling heat exchangers 11.2 are all of tube-fin type or plate-fin type heat exchanger structures, cooling liquid is filled in the air cooling island group, and the air cooling island group is formed by modularly parallel combination, so that the air cooling island group does not exclude the need of adding a valve or adopting a variable frequency fan to control each air cooling island according to heat dissipation.
The intermediate heat exchanger 1 realizes the isolation of inner and outer cooling liquid, adopts corrosion-resistant materials such as stainless steel or titanium and the like, and ensures the special requirements of the heat load 4 on the cleanliness, the resistivity and the like of the cooling liquid.
The first, second and third cooling liquid internal circulation systems and the cooling liquid external circulation system are all closed system designs, and open systems are not excluded under the same circulation principle.
The first three-way valve 6 and the second three-way valve 12 are electric three-way valves, and can back up the manual function.
The cooling liquid is glycol water solution or water.
Referring to fig. 2, a specific example of the evolution of the system schematic of the present invention is shown. The intermediate heat exchanger 1, the outer expansion tank 2, the outer circulation pump 3 and the like are canceled, i.e. the first cooling liquid inner circulation system is combined with the cooling liquid outer circulation system. The advantages are that there are few intermediate links, the disadvantage is that the inner and outer cooling liquid are no longer isolated, and there is a certain risk when there is a requirement for cooling liquid.
The above-described embodiments are only preferred embodiments of the present invention, but the present invention is not limited to the above-described embodiments, and any obvious modifications thereof will be apparent to those skilled in the art without departing from the principles of the present invention, without departing from the spirit of the invention and the scope of the appended claims.
Claims (5)
1. The utility model provides a wide temperature air cooling island formula liquid chiller, includes refrigeration host computer, air cooling island group, intermediate heat exchanger, outer circulating pump, evaporation side circulating pump, condensation side circulating pump, first, two three-way valve, check valve, evaporation side expansion tank, condensation side expansion tank, outside expansion tank, heat load and coolant liquid, its characterized in that: the outlet end of the evaporation side of the refrigeration host is sequentially connected with the expansion water tank, the evaporation side circulating pump, the intermediate heat exchanger and the first three-way valve of the evaporation side, and then is connected with the inlet end of the evaporation side of the refrigeration host to form a first cooling liquid internal circulating system; the outlet end of the condensing side of the refrigeration host is sequentially connected with the expansion water tank, the circulating pump, the one-way valve, the air cooling island group and the second three-way valve of the condensing side, and then is connected with the inlet end of the condensing side of the refrigeration host to form a second cooling liquid internal circulation system; when the refrigeration host is not in operation, the outlet end of the evaporation side circulating pump is connected with the intermediate heat exchanger, the first three-way valve, the air cooling island group, the second three-way valve and the evaporation side expansion water tank in sequence, and then is connected with the inlet end of the evaporation side circulating pump to form a third cooling liquid internal circulating system; the outlet end of the external circulation pump is connected with the heat load, the intermediate heat exchanger and the outer expansion water tank in sequence and then is connected with the inlet end of the external circulation pump to form a cooling liquid external circulation system; the third cooling liquid internal circulation system and the first cooling liquid internal circulation system and the second cooling liquid internal circulation system realize circulation interlocking through the first three-way valve, the second three-way valve and the one-way valve; the first and second cooling liquid internal circulation systems and the cooling liquid external circulation system form a compressor refrigeration mode; the third cooling liquid internal circulation system and the cooling liquid external circulation system form a forced air cooling mode;
the air cooling island group is formed by combining a plurality of air cooling heat exchangers and a fan in a compressor refrigeration mode and a forced air cooling mode, wherein the air cooling heat exchangers are all of tube-fin or plate-fin heat exchanger structures, and cooling liquid is filled in the air cooling heat exchangers and is formed by modularized parallel combination.
2. The wide Wen Kongleng island chiller according to claim 1 wherein: the intermediate heat exchanger realizes the isolation of inner and outer cooling liquid and is made of stainless steel or titanium.
3. The wide Wen Kongleng island chiller according to claim 1 wherein: the first, second and third cooling liquid internal circulation systems and the cooling liquid external circulation system are all of closed system design.
4. The wide Wen Kongleng island chiller according to claim 1 wherein: the first three-way valve and the second three-way valve are electric three-way valves.
5. The wide Wen Kongleng island chiller according to claim 1 wherein: the cooling liquid is glycol water solution or water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710048851.7A CN107062688B (en) | 2017-01-20 | 2017-01-20 | Wide Wen Kongleng island type liquid cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710048851.7A CN107062688B (en) | 2017-01-20 | 2017-01-20 | Wide Wen Kongleng island type liquid cooler |
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| Publication Number | Publication Date |
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| CN107062688A CN107062688A (en) | 2017-08-18 |
| CN107062688B true CN107062688B (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710048851.7A Active CN107062688B (en) | 2017-01-20 | 2017-01-20 | Wide Wen Kongleng island type liquid cooler |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11173711A (en) * | 1997-12-12 | 1999-07-02 | Daikin Ind Ltd | Dual refrigerator |
| CN201177333Y (en) * | 2008-01-25 | 2009-01-07 | 北京金万众空调制冷设备有限责任公司 | Perennial refrigeration wind-cooling cold water machine set with auxiliary coil tube |
| CN101988722A (en) * | 2010-10-27 | 2011-03-23 | 郭海新 | Natural cold source cooling water chiller |
| CN202002246U (en) * | 2011-04-19 | 2011-10-05 | 广州市华德工业有限公司 | Natural cooling cold water unit |
| CN102607123A (en) * | 2012-04-01 | 2012-07-25 | 海信（山东）空调有限公司 | Multi-system circulating air conditioning unit and control method |
| CN104296428A (en) * | 2014-10-09 | 2015-01-21 | 合肥天鹅制冷科技有限公司 | Device for regulating energy of vapor compression cycle refrigeration type cold liquid unit |
| CN104534730A (en) * | 2015-01-14 | 2015-04-22 | 合肥天鹅制冷科技有限公司 | Energy-saving type liquid refrigerating system |
| CN104776731A (en) * | 2015-03-31 | 2015-07-15 | 清华大学 | System and method for freezing resistance of cooling tower in winter by utilizing indirect evaporative cooling |
| CN206626850U (en) * | 2017-01-20 | 2017-11-10 | 合肥天鹅制冷科技有限公司 | The wide warm cold liquid machine of air cooling island |
-
2017
- 2017-01-20 CN CN201710048851.7A patent/CN107062688B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11173711A (en) * | 1997-12-12 | 1999-07-02 | Daikin Ind Ltd | Dual refrigerator |
| CN201177333Y (en) * | 2008-01-25 | 2009-01-07 | 北京金万众空调制冷设备有限责任公司 | Perennial refrigeration wind-cooling cold water machine set with auxiliary coil tube |
| CN101988722A (en) * | 2010-10-27 | 2011-03-23 | 郭海新 | Natural cold source cooling water chiller |
| CN202002246U (en) * | 2011-04-19 | 2011-10-05 | 广州市华德工业有限公司 | Natural cooling cold water unit |
| CN102607123A (en) * | 2012-04-01 | 2012-07-25 | 海信（山东）空调有限公司 | Multi-system circulating air conditioning unit and control method |
| CN104296428A (en) * | 2014-10-09 | 2015-01-21 | 合肥天鹅制冷科技有限公司 | Device for regulating energy of vapor compression cycle refrigeration type cold liquid unit |
| CN104534730A (en) * | 2015-01-14 | 2015-04-22 | 合肥天鹅制冷科技有限公司 | Energy-saving type liquid refrigerating system |
| CN104776731A (en) * | 2015-03-31 | 2015-07-15 | 清华大学 | System and method for freezing resistance of cooling tower in winter by utilizing indirect evaporative cooling |
| CN206626850U (en) * | 2017-01-20 | 2017-11-10 | 合肥天鹅制冷科技有限公司 | The wide warm cold liquid machine of air cooling island |
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