CN102548362A - Water-cooling radiating system - Google Patents

Water-cooling radiating system Download PDF

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Publication number
CN102548362A
CN102548362A CN2011104512772A CN201110451277A CN102548362A CN 102548362 A CN102548362 A CN 102548362A CN 2011104512772 A CN2011104512772 A CN 2011104512772A CN 201110451277 A CN201110451277 A CN 201110451277A CN 102548362 A CN102548362 A CN 102548362A
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China
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cooling water
water
water system
level
cooling
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朱旺法
景佰亨
薛松
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ZTE Corp
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ZTE Corp
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Priority to CN2011104512772A priority Critical patent/CN102548362A/en
Priority to PCT/CN2012/072976 priority patent/WO2013097369A1/en
Publication of CN102548362A publication Critical patent/CN102548362A/en
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/20763Liquid cooling without phase change
    • H05K7/2079Liquid cooling without phase change within rooms for removing heat from cabinets

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The invention provides a water-cooling radiating system, which comprises a first-level cooling water system and a second-level cooling water system. The first-level cooling water system is used for delivering cold of the first-level cooling water system to the second-level cooling water system through a water-water heat exchanger, and the second-level cooling water system is used for delivering cold of the second-level cooling water system to a device to be radiated through a water-air heat exchanger. The water-cooling radiating system solves the problems in relevant technology that a forced air cooling radiating method can not meet radiating requirements of high heat consumption devices, energy consumption is big, energy consumption of a refrigeration liquid cooling system is big, and maintaining cost is high. Use of the water-cooling radiating system meets radiating requirements of the high heat consumption devices and reduces maintaining cost of a radiating system.

Description

Water-cooling heat radiating system
Technical field
The present invention relates to the heat radiation field of communication equipment, in particular to a kind of water-cooling heat radiating system.
Background technology
Moore's Law points out that the efficient of electronic product was turned in per 18 months, and therefore, the hear rate of electronic product also increases thereupon; Simultaneously, the physical dimension of electronic product is more and more littler, and this two aspect has caused the heat flow in the unit volume increasing jointly, and the difficult problem of system radiating is more and more outstanding.For example, the overall heat consumption of regular knife chip server system is about 10 3-10 4The W order of magnitude, volume but have only 10-10 2The L order of magnitude, the unit volume heat flow is up to 10 2-10 3The W/L order of magnitude.At present; The cabinet of this type of hear rate situation, rack get more and more; If adopt traditional air blast cooling radiating mode not only be difficult to adapt to growing hear rate demand, can't a resolution system heat radiation difficult problem, and can cause noise pollution; Simultaneously, also can be exaggerated because of the bigger problem of heat radiation consumes energy.
For the rack level system of big hear rate, generally adopt liquid cooling system to dispel the heat, but present liquid cooling system generally adopt refrigerating system as low-temperature receiver.Lot of energy need be consumed owing to keep the running of refrigerating system, therefore,, the problem that consumes mass energy can be faced although refrigerating system can solve the difficult problem of high heat rack level system heat radiation.Therefore, the liquid cooling system of present refrigeration character is not only uneconomical, and maintenance cost is high, also can cause realistic problem such as energy consumption is big, pollution simultaneously, is not suitable for the energy-saving and emission-reduction theory that present country advocates.
Summary of the invention
The invention provides a kind of water-cooling heat radiating system, to solve the problem that consumes energy is big, maintenance cost is high of the big and refrigeration mode liquid cooling system of radiating requirements, consumes energy that air blast cooling radiating mode in the correlation technique can not satisfy high hear rate equipment at least.
According to an aspect of the present invention, a kind of water-cooling heat radiating system is provided, it comprises: the one-level cooling water system passes to the secondary cooling water system through water-water heat exchanger with the cold of said one-level cooling water system; Said secondary cooling water system is delivered to said treating in the heat dissipation equipment through water-empty heat exchanger with the cold of said secondary cooling water system.
Preferably; First end of water-water heat exchanger contacts with one-level cooling water in the one-level cooling water system; Second end of water-water heat exchanger contacts with secondary cooling water in the secondary cooling water system, is used for the cold of one-level cooling water system is passed to the secondary cooling water system; First end of water-empty heat exchanger contacts with secondary cooling water in the secondary cooling water system, and second end of water-empty heat exchanger is connected to treats heat dissipation equipment, is used for cold with the secondary cooling water system and is delivered to and treats heat dissipation equipment.
Preferably, the one-level cooling water system is an open system, and the secondary cooling water system is a closed circulation system.
Preferably, above-mentioned water-cooling heat radiating system also comprises: pipeline, as one-level cooling water in the one-level cooling water system and the secondary cooling-water flow passage in the secondary cooling water system; Water pump is arranged in the secondary cooling water system, is connected with pipeline, is used for circulating at pipeline through the pump pressure driving secondary cooling water of water pump.
Preferably, above-mentioned water-cooling heat radiating system also comprises: water supply tank, be communicated with pipeline through valve, and be used for regulating the discharge that is added into ducted secondary cooling water according to the discharge of the current secondary cooling water of pipeline and required cold.
Preferably; Above-mentioned water-cooling heat radiating system also comprises: automatic temperature control system; Comprise: temp probe, place the return air inlet place that treats heat dissipation equipment, be used for surveying the return air temperature of treating heat dissipation equipment; So that regulate the one-level cooling water and the discharge of the secondary cooling water in the secondary cooling water system in the one-level cooling water system, with the unify cold of secondary cooling water system of adjusting one-level cooling water system according to the return air temperature measured.
Preferably, pipeline is provided with insulation material, is used to reduce the cold loss of secondary cooling water system.
Preferably, the one-level cooling water in the one-level cooling water system is a running water.
According to another aspect of the present invention; A kind of water-cooling heat radiating system is provided; It comprises: the one-level cooling water system passes to the first order cooling water system in the multistage cooling water system through water-water heat exchanger with the cold of one-level cooling water system, wherein; Adjacent two-stage cooling water system in the multistage cooling water system is connected through a water-water heat exchanger, to carry out the cold transmission between the adjacent two-stage cooling water system in multistage cooling water system; Multistage cooling water system, the afterbody cooling water system in the multistage cooling water system are delivered to the cold of the afterbody cooling water system in the multistage cooling water system through water-empty heat exchanger and treat in the heat dissipation equipment.
Preferably; First end of water-water heat exchanger contacts with one-level cooling water in the said one-level cooling water system; Cooling water in the first order cooling water system in second end of water-water heat exchanger and the multistage cooling water system connected in series contacts, and is used for the cold of one-level cooling water system is passed to the first order cooling water system of multistage cooling water system; Cooling water in the afterbody cooling water system in first end of water-empty heat exchanger and the multistage cooling water system contacts; Second end of water-empty heat exchanger is connected to treats heat dissipation equipment, is used for cold with the afterbody cooling water system of multistage cooling water system and is delivered to and treats in the heat dissipation equipment.
Preferably, the one-level cooling water system is an open system, and single cooling water system is a closed circulation system in the multistage cooling water system.
Preferably, the one-level cooling water in the one-level cooling water system is a running water.
In the present invention; Through water-water heat exchanger the cold of one-level cooling water system is passed to the secondary cooling water system; Through water-empty heat exchanger the cold of secondary cooling water system is delivered to again and treats in the heat dissipation equipment; Treat in the heat dissipation equipment air themperature and then lower chip temperature through reduction, realize that high hear rate treats the system radiating of heat dissipation equipment; Simultaneously; The one-level cooling water system is final low-temperature receiver with city tap-water, and when the secondary cooling water system was carried low-temperature receiver to give separately to treat that heat dissipation equipment is not enough to satisfy the equipment cooling requirement, the one-level cooling water system can cooperate with the secondary cooling water system; Increase and be transported to the cold of treating in the heat dissipation equipment; Treat heat dissipation equipment and dispel the heat, avoid dispelling the heat, treat the dispel the heat energy of required additive decrementation of heat dissipation equipment thereby reduced the present invention through forcing wind or refrigerating system to realize treating heat dissipation equipment; Saved a large amount of system capacities, and cost is low.Solved the problem that consumes energy is big, maintenance cost is high that air blast cooling radiating mode in the correlation technique can not satisfy the big and refrigeration mode liquid cooling system of radiating requirements, the consumes energy of high hear rate equipment, thereby the use of water-cooling heat radiating system helps improving fail safe, stability and the reliability of treating the heat dissipation equipment operation among the present invention.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is a kind of preferred construction sketch map according to the water-cooling heat radiating system of the embodiment of the invention;
Fig. 2 is the another kind of preferred construction sketch map according to the water-cooling heat radiating system of the embodiment of the invention.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Embodiment 1
Fig. 1 is a kind of preferred construction sketch map according to the water-cooling heat radiating system of the embodiment of the invention; As shown in Figure 1; This water-cooling heat radiating system comprises: one-level cooling water system 100 passes to secondary cooling water system 200 through water-water heat exchanger 1 with the cold of one-level cooling water system 100; Secondary cooling water system 200 is delivered to the cold of secondary cooling water system 200 through water-empty heat exchanger 3 and treats in the heat dissipation equipment 4.
In above-mentioned preferred embodiment, through water-water heat exchanger 1 cold of one-level cooling water system 100 is passed to secondary cooling water system 200, through water-empty heat exchanger 3 cold of secondary cooling water system 200 is delivered to again and treats in the heat dissipation equipment 4; Carry out heat exchange with treating the hot-air in the heat dissipation equipment 4, reduce the temperature of treating hot-air in the heat dissipation equipment 4, and then the temperature of the electronic product in the heat dissipation equipment 4 is treated in cooling; Simultaneously; One-level cooling water system 100 is a low-temperature receiver with the running water, the cold of cooling water is delivered to through the secondary cooling water system treats in the heat dissipation equipment, treats heat dissipation equipment 4 and dispels the heat; Avoid dispelling the heat through forcing wind or refrigerating system to realize treating heat dissipation equipment 4; Treat the dispel the heat energy of required additive decrementation of heat dissipation equipment thereby reduced the present invention, saved a large amount of system capacities, and cost is low; Solved the problem that consumes energy is big, maintenance cost is high that air blast cooling radiating mode in the correlation technique can not satisfy the big and refrigeration mode liquid cooling system of radiating requirements, the consumes energy of high hear rate equipment, thereby the use of water-cooling heat radiating system helps improving fail safe, stability and the reliability of treating the heat dissipation equipment operation among the present invention.
On the basis of the foregoing description; Present embodiment provides the connected mode of preferred water-water heat exchanger 1 and water-empty heat exchanger 3; Particularly, as shown in Figure 1, first end of water-water heat exchanger 1 contacts with one-level cooling water in the one-level cooling water system 100; Second end of water-water heat exchanger 1 contacts with secondary cooling water in the secondary cooling water system 200, is used for the cold of one-level cooling water system 100 is passed to secondary cooling water system 200; First end of water-empty heat exchanger 3 contacts with secondary cooling water in the secondary cooling water system 200, and second end of water-empty heat exchanger 3 is connected to treats heat dissipation equipment 4, is used for cold with secondary cooling water system 200 and is delivered to and treats heat dissipation equipment 4.In the present embodiment; Connect one-level cooling water and secondary cooling water through water-water heat exchanger 1; Realization passes to the secondary cooling water with the cold of one-level cooling water; And through water-empty heat exchanger 3 cold of secondary cooling water is delivered to and treats in the heat dissipation equipment 4, realize that cold with the cold of one-level cooling water and secondary cooling water combines to be passed to by secondary cooling water system 200 to treat heat dissipation equipment 4, treat the radiating effect of heat dissipation equipment 4 with raising.
On the basis of the foregoing description, the present invention improves above-mentioned water-cooling heat radiating system, and particularly, one-level cooling water system 100 is an open system, secondary cooling water system 200 closed circulation systems.In the present embodiment; One-level cooling water system 100 pipelines can be directly connected on the running water system, thereby form open system, have utilized the advantage of nature low-temperature receiver fully; The energy of the required consumption of system radiating when lowering the temperature of treating heat dissipation equipment 4 can be reached, environment protecting can be reached again.
On the basis of the foregoing description, the present invention improves above-mentioned water-cooling heat radiating system, and is as shown in Figure 1, and this water-cooling heat radiating system comprises: pipeline 8, as one-level cooling water and secondary cooling-water flow passage; Water pump 9 is arranged in the secondary cooling water system 200, is connected with pipeline 8, is used for circulating at pipeline 8 through the pump pressure driving secondary cooling water of water pump 9.In the present embodiment; Make water-water heat exchanger 1 and water-empty heat exchanger 3 contact through pipeline with secondary cooling water in the pipeline 8; Realization passes to secondary cooling water system 200 with the cold of one-level cooling water system 100; And finally be passed to and treat heat dissipation equipment 4, so that satisfy the radiating requirements of high hear rate equipment; Simultaneously, drive circulating of secondary cooling water, make the secondary cooling water in pipeline 8, circulate, transmit one-level cooling water cold to treating heat dissipation equipment through water pump 9.
On the basis of above-mentioned each preferred embodiment; The present invention has carried out further improvement to above-mentioned water-cooling heat radiating system; As shown in Figure 1; This water-cooling heat radiating system comprises: water supply tank 5, be communicated with pipeline 8 through valve 7, and be used for regulating the discharge that is added into ducted secondary cooling water according to the discharge of the current secondary cooling water of pipeline and required cold.In the present embodiment; Can make 5 pairs of secondary cooling waters of water supply tank carry out supply through control valve 7; To regulate the discharge and the cold of secondary cooling water; Realization is regulated the discharge and the cold of secondary cooling water according to different demands, treats the difference heat radiation needs of heat dissipation equipment to satisfy difference, thereby has strengthened use flexibility of the present invention.
On the basis of above-mentioned each preferred embodiment; The present invention has done further improvement to above-mentioned water-cooling heat radiating system, and is as shown in Figure 1, and this water-cooling heat radiating system comprises: automatic temperature control system 11 (for the dotted line among Fig. 1); Comprise: temp probe 12; Place the return air inlet place that treats heat dissipation equipment 4, be used for surveying the return air temperature of treating heat dissipation equipment 4, in the process of regulating discharge; According to the return air temperature adjusting one-level cooling water of measuring and the discharge of secondary cooling water, to regulate the cold of one-level cooling water system 100 and secondary cooling water system 200.In the present embodiment; Return air inlet place at the communication apparatus 4 of waiting to dispel the heat is provided with temp probe 12; Temperature according to temp probe 12 detects is regulated the discharge of one-level cooling water and secondary cooling water targetedly; Realization is regulated the cold of one-level cooling water and secondary cooling water according to temperature requirements, thereby has improved radiating efficiency of the present invention, has improved the accuracy of treating the temperature of heat dissipation equipment after the heat radiation.
On the basis of the foregoing description, the invention provides a kind of preferred regulation scheme.Particularly, detect the return air temperature of treating in the heat dissipation equipment 4 when being higher than preset temperature value, through regulating valve 7 and the adjusting water pump 9 that is connected with pipeline 8 with water supply tank 5, the discharge of the secondary cooling water in the increase pipeline 8 at temp probe 12.In the present embodiment, detect the return air temperature of treating in the heat dissipation equipment 4 when being higher than preset temperature value at temp probe 12, through the discharge of secondary cooling water is regulated; Through regulating the rotating speed of water pump 9; The flow velocity of cooling water in the control secondary cooling system, and then reach the purpose of regulating suitable secondary cooling water cold, so that transmit cold exactly, effectively to treating in the heat dissipation equipment 4; Satisfy the demand of system radiating, reach energy-conservation purpose simultaneously.
On the basis of the foregoing description, the present invention also provides a kind of preferred regulation scheme.Particularly; After the discharge of the secondary cooling water in increasing pipeline 8; When detect the return air temperature of treating in the heat dissipation equipment 4 when being higher than preset temperature value (at this moment; The heat-sinking capability of treating heat dissipation equipment 4 is not enough), through regulating the valve 10 that is connected with the water storage box that the one-level cooling water is housed 2, increase the discharge of one-level cooling water in the water storage box 2.In the present embodiment; After the discharge of regulating the secondary cooling water; Still in the time of can't satisfying the heat radiation needs of treating heat dissipation equipment 4, can regulate the cold of one-level cooling water through the discharge of one-level cooling water is regulated; And then the cold of adjusting secondary cooling water, to satisfy the heat radiation needs of treating heat dissipation equipment 4.When the present invention has realized that the cold of secondary cooling water is not enough; Can strengthen the cold of secondary cooling water through the discharge of regulating the one-level cooling water; Thereby can realize that the heat dissipation equipment 4 of treating of the present invention carries out the interval heat radiation of big temperature value, has strengthened practicality of the present invention.
On the basis of above-mentioned each preferred embodiment; The present invention's pipeline 8 is provided with insulation material; With the loss of the cold that reduces the secondary cooling water, realization can be fully be delivered to the cold of secondary cooling water treats in the heat dissipation equipment 4 that the radiating effect of heat dissipation equipment 4 is treated in raising.
On the basis of the foregoing description, insulation material can but be not limited to heat-preservation cotton,, can when reaching heat insulation effect, reduce cost as insulation material with the heat-preservation cotton of economy.
On the basis of above-mentioned each preferred embodiment; The present invention has done further improvement again to above-mentioned water-cooling heat radiating system, and is as shown in Figure 1, and this water-cooling heat radiating system comprises: speed-regulating fan 6; Be used for to treat that the hot-air of heat dissipation equipment 4 return air inlets blows over water-empty heat exchanger; Carry out heat exchange with secondary cooling water system 200, thereby lower water-empty heat exchanger 3 outlet air temperatures (treating heat dissipation equipment 4 air intake vents), and then the interior electronic product of communication apparatus 4 (promptly treating heat dissipation equipment 4) is dispelled the heat; Wherein, communication apparatus 4 air are closed circulation states.
Further; In the above-described embodiments; After the cold air that carries out heat exchange with water-empty heat exchanger absorbs the heat of electronic product, become hot-air once more, under the actuating force of speed-regulating fan 6, get into water-empty heat exchanger 3 once more; Carry out heat exchange with secondary cooling water system 200, speed-regulating fan 6 is blown into the Cryogenic air that produces once more and treats in the heat dissipation equipment 4.So constantly circulation realizes that treating heat dissipation equipment 4 dispels the heat.
Further, in the above-described embodiments, above-mentioned speed-regulating fan 6 is according to temp probe 12 temperature detected; In certain cold scope; Only regulate rotation speed of the fan, regulate air quantity, reach optimization system heat radiation purpose; Thereby the control system fan noise, the while is realized the effect of energy saving of system to a certain extent.
On the basis of above-mentioned each preferred embodiment, the one-level cooling water in the one-level cooling water system 100 can be running water, also can be other natural water source; The pump pressure that makes full use of the city tap-water system is pressed into water storage box with water service pump; Keep the energy that the one-level cooling water circulates with minimizing, simultaneously, made full use of the advantage of nature low-temperature receiver; To realize reducing the heat radiation cost of treating heat dissipation equipment 4, reduce big, the noisy problem of energy resource consumption that causes because of power source driving cooling system; Simultaneously, make full use of natural advantage,, strengthened operability of the present invention for can directly utilizing under the major part heat radiation scene.
Further; On the basis of above-mentioned each preferred embodiment, can in the secondary cooling water, add ethylene glycol, to reduce the corrosion that the secondary cooling water produces pipeline; Simultaneously; Cross when low in ambient temperature, prevent that the secondary cooling water from freezing, treat heat dissipation equipment 4 smoothly when low and dispel the heat to guarantee that the present invention can cross in ambient temperature.
Embodiment 2
On the basis of above-mentioned each preferred embodiment; The invention provides another kind of preferred water-cooling heat radiating system; Particularly, as shown in Figure 2, above-mentioned water-cooling heat radiating system comprises: one-level cooling water system 100; Through water-water heat exchanger 1 cold of one-level cooling water system 100 is passed to the first order cooling water system in the multistage cooling water system; Wherein, the adjacent two-stage cooling water system in the multistage cooling water system is connected through a water-water heat exchanger 1, to carry out the cold transmission between the adjacent two-stage cooling water system in multistage cooling water system; Multistage cooling water system, the afterbody cooling water system in the multistage cooling water system is delivered to said treating in the heat dissipation equipment 4 through water-empty heat exchanger 3 with the cold of the afterbody cooling water system in the said multistage cooling water system.
In above-mentioned preferred embodiment; One-level cooling water system 100 shown in Fig. 2 has identical internal structure with one-level cooling water system 100 shown in Figure 1; Every grade of cooling water system in the multistage cooling water system shown in Fig. 2 has identical internal structure with secondary cooling water system 200 shown in Figure 1, and the heat dissipation equipment 4 of treating shown in Fig. 2 has identical internal structure with the heat dissipation equipment 4 of treating shown in Figure 1.
In addition, the concrete connectivity scenario that is connected with first order cooling water system (the secondary cooling water system 200 among Fig. 2) in the multistage cooling water system through water-water heat exchanger 1 of the one-level cooling water system 100 shown in Fig. 2 connected mode that can be connected with secondary cooling water system 200 through water-water heat exchanger 1 with reference to one-level cooling water system shown in Figure 1 100.
Afterbody cooling water system in the multistage cooling water system shown in Fig. 2 (three grades of cooling water systems 300 among Fig. 2) through water-empty heat exchanger 3 with treat that the concrete connectivity scenario that heat dissipation equipment 4 is connected can be with reference to secondary cooling water system 200 shown in Figure 1 through water-empty heat exchanger 3 and the concrete connectivity scenario of treating that heat dissipation equipment 4 is connected.
In above-mentioned preferred embodiment; Through water-water heat exchanger 1 cold of one-level cooling water system 100 is passed to the first order cooling water system in the multistage cooling water system; Carry out the cold transmission through water-water heat exchanger 1 between the adjacent two-stage cooling water system in the multistage cooling water system; Through water-empty heat exchanger 3 cold of the afterbody cooling water system in the multistage cooling water system is delivered to and treats in the heat dissipation equipment 4; Carry out heat exchange with treating the hot-air in the heat dissipation equipment 4, treat in the heat dissipation equipment air themperature and then lower chip temperature, realize that high hear rate treats the system radiating of heat dissipation equipment through reduction; Simultaneously; Can realize different radiating requirements, select to use the progression of cooling water system, thereby change the cold of the afterbody cooling water system in the multistage cooling water system according to heat dissipation equipment 4; To satisfy heat dissipation equipment 4 different radiating requirements, strengthen use flexibility of the present invention.
On the basis of the foregoing description; Present embodiment provides preferred water-water heat exchanger 1 and the water-connected mode of empty heat exchanger 3 in multistage cooling water system; Particularly; Can be with reference to the connected mode of the water-water heat exchanger among Fig. 11 and water-empty heat exchanger 3; First end of water-water heat exchanger 1 contacts with one-level cooling water in the one-level cooling water system 100, and the cooling water in the first order cooling water system (the secondary cooling water system 200 among Fig. 2) in second end of water-water heat exchanger 1 and the multistage cooling water system connected in series contacts, and is used for the cold of one-level cooling water system 100 is passed to the first order cooling water system of multistage cooling water system; Cooling water in the afterbody cooling water system (three grades of cooling water systems 300 among Fig. 2) in first end of water-empty heat exchanger 3 and the multistage cooling water system contacts; Second end of water-empty heat exchanger 3 is connected to treats heat dissipation equipment 4, is used for cold with the afterbody cooling water system of multistage cooling water system and is delivered to and treats in the heat dissipation equipment 4.In the present embodiment; Combine through the cold of water-water heat exchanger 1 cooling water in other cooling water systems at different levels (three grades of cooling water systems 300 among Fig. 2) in the cold of the cold of one-level cooling water and the cooling water in the first order cooling water system in the multistage cooling water system (the secondary cooling water system 200 among Fig. 2) and the multistage cooling water system; And the cold of the cooling water after will being combined by the afterbody cooling water system in the multistage cooling water system (three grades of cooling water systems 300 among Fig. 2) passes to and treats heat dissipation equipment 4; Improve the radiating effect of treating heat dissipation equipment 4; Simultaneously; Can select to comprise the multistage cooling water system of different progression, to satisfy different radiating requirements according to the different radiating requirements of treating heat dissipation equipment 4.
On the basis of the foregoing description, the present invention improves above-mentioned water-cooling heat radiating system, and particularly, one-level cooling water system 100 is an open system, and multistage cooling water system is a closed circulation system.In the present embodiment; One-level cooling water system 100 pipelines can be directly connected in the natural water source system; Thereby form the open type loop; Utilize the advantage of nature low-temperature receiver fully, can reach the energy of the required consumption of system radiating when lowering the temperature of treating heat dissipation equipment 4, can reach environment protecting again.
On the basis of above-mentioned each preferred embodiment, the one-level cooling water in the one-level cooling water system 100 can be running water, also can be other natural water source; The pump pressure that makes full use of the city tap-water system is pressed into water storage box with water service pump; Keep the energy that the one-level cooling water circulates with minimizing, simultaneously, made full use of the advantage of nature low-temperature receiver; To realize reducing the heat radiation cost of treating heat dissipation equipment 4, reduce big, the noisy problem of energy resource consumption that causes because of power source driving cooling system; Simultaneously, make full use of natural advantage,, strengthened operability of the present invention for can directly utilizing under the major part heat radiation scene.
Further; On the basis of above-mentioned each preferred embodiment, can in multistage cooling water, add ethylene glycol, to reduce the corrosion that multistage cooling water produces pipeline; Simultaneously; Cross when low in ambient temperature, prevent that multistage cooling water from freezing, treat heat dissipation equipment 4 smoothly when low and dispel the heat to guarantee that the present invention can cross in ambient temperature.
On the basis of the foregoing description, the present invention improves above-mentioned water-cooling heat radiating system, and particularly, this water-cooling heat radiating system comprises: pipeline 8, as multistage cooling-water flow passage; Water pump 9 is arranged in secondary cooling water system 200 and the three grades of cooling water systems 300, is connected with pipeline 8, is used for that pump pressure through water pump 9 drives the secondary cooling water and three grades of cooling waters circulate at pipeline 8.In the present embodiment; Make water-water heat exchanger 1 and water-empty heat exchanger 3 contact through pipeline 8 with multistage cooling water in the pipeline 8; Realization passes to secondary cooling water system 200 with the cold of one-level cooling water system 100; And then the cold of secondary cooling water system 200 passed to three grades of cooling water systems 300, strengthen the cold of three grades of cooling water systems 30, so that satisfy the radiating requirements of high hear rate equipment; Simultaneously; Drive circulating of secondary cooling water and three grades of cooling waters through water pump 9; Make secondary cooling water and three grades of cooling waters in pipeline 8, circulate; Avoid the operation of the present invention of working power driven by energy, reduced energy resource consumption of the present invention, avoided using fan etc. to dispel the heat and the big problem of not environmental protection, noise that causes.
On the basis of above-mentioned each preferred embodiment; The present invention has carried out further improvement to above-mentioned water-cooling heat radiating system; Particularly; This water-cooling heat radiating system comprises: water supply tank 5, be communicated with pipeline 8 through valve 7, and be used for regulating the discharge that is added into the secondary cooling water in the pipeline 8 according to the discharge of the current secondary cooling water of pipeline 8 and required cold; Water supply tank 5 is communicated with pipeline 8 through valve 7, also is used for regulating the discharge that is added into three grades of cooling waters in the pipeline 8 according to the discharge of three grades of current cooling waters of pipeline 8 and required cold.In the present embodiment; Can make water supply tank 5 carry out supply to secondary cooling water and three grades of cooling waters respectively through control valve 7; To regulate the discharge and the cold of secondary cooling water and three grades of cooling waters; Realization is regulated the discharge and the cold of secondary cooling water and three grades of cooling waters according to different demands, treats the difference heat radiation needs of heat dissipation equipment to satisfy difference, thereby has strengthened use flexibility of the present invention.
On the basis of above-mentioned each preferred embodiment; The present invention has done further improvement again to above-mentioned water-cooling heat radiating system, and particularly, this water-cooling heat radiating system comprises: speed-regulating fan 6; Be used for to treat that the hot-air of heat dissipation equipment 4 return air inlets blows over water-empty heat exchanger; Carry out heat exchange with the afterbody cooling water system (three grades of cooling water systems 300 among Fig. 2) in the multistage cooling water system, thereby lower water-empty heat exchanger 3 outlet air temperatures (treating heat dissipation equipment 4 air intake vents), and then the interior electronic product of communication apparatus 4 (promptly treating heat dissipation equipment 4) is dispelled the heat; Wherein, communication apparatus 4 air are closed circulation states.
Further; In the above-described embodiments; After the cold air that carries out heat exchange with water-empty heat exchanger absorbs the heat of electronic product, become hot-air once more, under the actuating force of speed-regulating fan 6, get into water-empty heat exchanger 3 once more; Carry out heat exchange with the afterbody cooling water system in the multistage cooling water system, speed-regulating fan 6 is blown into the Cryogenic air that produces once more and treats in the heat dissipation equipment 4.So constantly circulation realizes that treating heat dissipation equipment 4 dispels the heat.
Further, in the above-described embodiments, above-mentioned speed-regulating fan 6 is according to temp probe 12 temperature detected; In certain cold scope; Only regulate rotation speed of the fan, regulate air quantity, reach optimization system heat radiation purpose; Thereby the control system fan noise, the while is realized the effect of energy saving of system to a certain extent.
On the basis of above-mentioned each preferred embodiment; The present invention has done further improvement to above-mentioned water-cooling heat radiating system; Particularly, this water-cooling heat radiating system comprises: automatic temperature control system 11 comprises: temp probe 12; Place the return air inlet place that treats heat dissipation equipment 4; Be used for surveying the return air temperature of treating heat dissipation equipment 4, so that the discharge of regulating multistage cooling water (three grades of cooling waters among Fig. 2 and secondary cooling water) and one-level cooling water according to the return air temperature of measuring, to regulate the cold of multistage cooling water system 100 and one-level cooling water system.In the present embodiment; Return air inlet place at the communication apparatus 4 of waiting to dispel the heat is provided with temp probe 12; Temperature according to temp probe 12 detects is regulated the discharge of multistage cooling water and one-level cooling water targetedly; Realization is finally regulated the cold of one-level cooling water according to temperature requirements, thereby has improved radiating efficiency of the present invention, has improved the accuracy of treating the temperature of heat dissipation equipment after the heat radiation.
On the basis of the foregoing description; The invention provides a kind of preferred regulation scheme; Concrete; Detect the return air temperature of treating in the heat dissipation equipment 4 when being higher than preset temperature value at temp probe 12, through regulating valve 7 and the adjusting water pump 9 that is connected with pipeline 8 with water supply tank 5, the discharge of the cooling water in the multistage cooling water system 200 in the increase pipeline 8; After the discharge of the cooling water in regulating multistage cooling water system 200; Temp probe 12 detects the return air temperature of treating in the heat dissipation equipment 4 when being higher than preset temperature value; Through regulating the valve 7 that is connected with pipeline 8 with water supply tank 5 and regulating water pump 9, increase the discharge of the cooling water in three grades of cooling water systems 200 in the pipeline 8.In the present embodiment; Detect the return air temperature of treating in the heat dissipation equipment 4 when being higher than preset temperature value at temp probe 12; Discharge to the cooling water in secondary cooling water system 200 and the three grades of cooling water systems 300 is regulated respectively; Be arranged on the rotating speed of the water pump in secondary cooling water system 200 and the three grades of cooling water systems 300 through adjusting; Control the flow velocity of the cooling water in secondary cooling water system 200 and the three grades of cooling water systems 300 respectively, and then reach and regulate the suitable secondary cooling water system 200 and the purpose of three grades of cooling water system 300 colds, so that transmit cold exactly, effectively to treating in the heat dissipation equipment 4; Satisfy the demand of system radiating, reach energy-conservation purpose simultaneously.
On the basis of the foregoing description; The present invention improves regulation scheme, particularly, and after the discharge of the cooling water in the secondary cooling water system 200 in increasing pipeline 8 and the three grades of cooling water systems 300; When detect the return air temperature of treating in the heat dissipation equipment 4 when being higher than preset temperature value (at this moment; The heat-sinking capability of treating heat dissipation equipment 4 is not enough), through regulating the valve 10 that is connected with the water storage box that the one-level cooling water is housed 2, increase the discharge of one-level cooling water in the water storage box 2.In the present embodiment; After the discharge of regulating secondary cooling water and three grades of cooling waters; Still in the time of can't satisfying the heat radiation needs of treating heat dissipation equipment 4, can regulate the cold of one-level cooling water through the discharge of one-level cooling water is regulated; And then the cold of adjusting secondary cooling water system 200 and three grades of cooling water systems 300, to satisfy the heat radiation needs of treating heat dissipation equipment 4.When the present invention has realized that the cold of secondary cooling water system 200 and three grades of cooling water systems 300 is not enough; Can strengthen the cold of secondary cooling water system 200 and three grades of cooling water systems 300 through the discharge of regulating the one-level cooling water; Thereby can realize that the heat dissipation equipment 4 of treating of the present invention carries out the interval heat radiation of big temperature value, has strengthened practicality of the present invention.
On the basis of above-mentioned each preferred embodiment; The present invention's pipeline 8 is provided with insulation material; Loss with the cold that reduces secondary cooling water system 200 and three grades of cooling water systems 300; Realization can be fully be delivered to the cold of secondary cooling water system 200 and three grades of cooling water systems 300 to be treated in the heat dissipation equipment 4, improves the radiating effect of treating heat dissipation equipment 4.
On the basis of the foregoing description, insulation material can but be not limited to heat-preservation cotton,, can when reaching heat insulation effect, reduce cost as insulation material with the heat-preservation cotton of economy.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1. a water-cooling heat radiating system is characterized in that, comprising:
One-level cooling water system (100) passes to secondary cooling water system (200) through water-water heat exchanger (1) with the cold of said one-level cooling water system (100);
Said secondary cooling water system (200) is delivered to said treating in the heat dissipation equipment (4) through water-empty heat exchanger (3) with the cold of said secondary cooling water system (200).
2. water-cooling heat radiating system according to claim 1; It is characterized in that; First end of said water-water heat exchanger (1) contacts with one-level cooling water in the said one-level cooling water system (100); Second end of said water-water heat exchanger (1) contacts with secondary cooling water in the said secondary cooling water system (200), is used for the cold of said one-level cooling water system (100) is passed to said secondary cooling water system (200); First end of said water-empty heat exchanger (3) contacts with secondary cooling water in the said secondary cooling water system (200); Second end of said water-empty heat exchanger (3) is connected to the said heat dissipation equipment (4) of treating, is used for the cold of said secondary cooling water system (200) is delivered to the said heat dissipation equipment (4) of treating.
3. water-cooling heat radiating system according to claim 1 is characterized in that, said one-level cooling water system (100) is an open system, and said secondary cooling water system (200) is a closed circulation system.
4. according to each described water-cooling heat radiating system in the claim 1 to 3, it is characterized in that, also comprise:
Pipeline (8) is as one-level cooling water in the said one-level cooling water system (100) and the secondary cooling-water flow passage in the said secondary cooling water system (200);
Water pump (9) is arranged in the said secondary cooling water system (200), is connected with said pipeline (8), is used for pump pressure through said water pump (9) and drives said secondary cooling water and circulate at said pipeline (8).
5. water-cooling heat radiating system according to claim 4 is characterized in that, also comprises:
Water supply tank (5) is communicated with said pipeline (8) through valve (7), is used for regulating the discharge that is added into the secondary cooling water in the said pipeline (8) according to the discharge of the current said secondary cooling water of said pipeline (8) and required cold.
6. according to each described water-cooling heat radiating system in the claim 1 to 3, it is characterized in that, also comprise:
Automatic temperature control system (11) comprising:
Temp probe (12); Place the said return air inlet place that treats heat dissipation equipment (4); Be used for surveying the said return air temperature of treating heat dissipation equipment (4); So that regulate one-level cooling water and the discharge of the secondary cooling water in the said secondary cooling water system (200) in the said one-level cooling water system (100) according to the return air temperature of measuring, to regulate the cold of said one-level cooling water system (100) and said secondary cooling water system (200)
7. according to each described water-cooling heat radiating system in the claim 1 to 3, it is characterized in that the one-level cooling water in the said one-level cooling water system (100) is a running water.
8. water-cooling heat radiating system according to claim 4 is characterized in that, said pipeline (8) is provided with insulation material, is used to reduce the cold loss of said secondary cooling water system (200).
9. a water-cooling heat radiating system is characterized in that, comprising:
One-level cooling water system (100); Through water-water heat exchanger (1) cold of said one-level cooling water system (100) is passed to the first order cooling water system in the multistage cooling water system; Wherein, Adjacent two-stage cooling water system in the said multistage cooling water system is connected through a water-water heat exchanger (1), to carry out the cold transmission between the adjacent two-stage cooling water system in said multistage cooling water system;
Said multistage cooling water system, the afterbody cooling water system in the said multistage cooling water system is delivered to said treating in the heat dissipation equipment (4) through water-empty heat exchanger (3) with the cold of the afterbody cooling water system in the said multistage cooling water system.
10. water-cooling heat radiating system according to claim 9; It is characterized in that; First end of said water-water heat exchanger (1) contacts with one-level cooling water in the said one-level cooling water system (100); Cooling water in the first order cooling water system in second end of said water-water heat exchanger (1) and the multistage cooling water system connected in series contacts, and is used for the cold of said one-level cooling water system (100) is passed to the first order cooling water system of multistage cooling water system; Cooling water in the afterbody cooling water system in first end of said water-empty heat exchanger (3) and the multistage cooling water system contacts; Second end of said water-empty heat exchanger (3) is connected to treats heat dissipation equipment (4), is used for cold with the afterbody cooling water system of multistage cooling water system and is delivered to and treats in the heat dissipation equipment (4).
11. water-cooling heat radiating system according to claim 9 is characterized in that, said one-level cooling water system (100) is an open system, and said multistage cooling water system is a closed circulation system.
12. water-cooling heat radiating system according to claim 9 is characterized in that, the one-level cooling water in the said one-level cooling water system (100) is a running water.
CN2011104512772A 2011-12-29 2011-12-29 Water-cooling radiating system Pending CN102548362A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102869237A (en) * 2012-09-13 2013-01-09 深圳市博恩实业有限公司 Heat radiating system for server and communication cabinet
CN103052304A (en) * 2012-12-14 2013-04-17 广州高澜节能技术股份有限公司 Server cabinet cooling system
CN103247349A (en) * 2013-04-16 2013-08-14 任曲波 Robot extrinsic cycle liquid cooling system
CN103617941A (en) * 2013-11-14 2014-03-05 中国科学院等离子体物理研究所 Liquid metal two-stage cooling method for high current ion source electrode
CN103744451A (en) * 2014-01-23 2014-04-23 浪潮电子信息产业股份有限公司 Water-cooling cabinet temperature keeping regulation and control method capable of improving noise and condensed water
CN105764308A (en) * 2016-04-19 2016-07-13 上海浪超电子电器有限公司太仓分公司 Intelligent split type water cooling radiator
CN106207822A (en) * 2016-09-09 2016-12-07 国家电网公司 A kind of box-type substation
CN104320953B (en) * 2014-09-19 2017-02-22 中国移动通信集团广东有限公司 Secondary water-loop server cabinet cooling system
CN108012513A (en) * 2017-12-29 2018-05-08 华南理工大学 It is a kind of without the in the ranks data center of air-conditioning and its cooling system
CN109029005A (en) * 2018-09-14 2018-12-18 中国铁建重工集团有限公司 Cooling system and development machine with the cooling system
CN111821744A (en) * 2019-04-23 2020-10-27 西门子(深圳)磁共振有限公司 Water filtering device, water cooling system and water cooling method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7385810B2 (en) * 2005-04-18 2008-06-10 International Business Machines Corporation Apparatus and method for facilitating cooling of an electronics rack employing a heat exchange assembly mounted to an outlet door cover of the electronics rack
CN101223837A (en) * 2006-09-01 2008-07-16 株式会社创造21 Air conditioning system for communication equipment
CN201381421Y (en) * 2009-04-14 2010-01-13 东莞超盈纺织有限公司 Warp knitting machine multifunctional water cooling device
CN101737886A (en) * 2008-12-15 2010-06-16 新疆绿色使者空气环境技术有限公司 Method of horizontally multistage indirect evaporation cooling refrigeration
CN101902897A (en) * 2010-07-19 2010-12-01 深圳市中兴新通讯设备有限公司 Communication machine room cooling system
US20110051372A1 (en) * 2009-09-02 2011-03-03 International Business Machines Corporation Stress relieved hose routing to liquid-cooled electronics rack door

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005079483A (en) * 2003-09-03 2005-03-24 Hitachi Ltd Electronic apparatus
CN2922400Y (en) * 2006-06-02 2007-07-11 贵州航天南海机电有限公司 Control cabinet water-cooled regulating device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7385810B2 (en) * 2005-04-18 2008-06-10 International Business Machines Corporation Apparatus and method for facilitating cooling of an electronics rack employing a heat exchange assembly mounted to an outlet door cover of the electronics rack
CN101223837A (en) * 2006-09-01 2008-07-16 株式会社创造21 Air conditioning system for communication equipment
CN101737886A (en) * 2008-12-15 2010-06-16 新疆绿色使者空气环境技术有限公司 Method of horizontally multistage indirect evaporation cooling refrigeration
CN201381421Y (en) * 2009-04-14 2010-01-13 东莞超盈纺织有限公司 Warp knitting machine multifunctional water cooling device
US20110051372A1 (en) * 2009-09-02 2011-03-03 International Business Machines Corporation Stress relieved hose routing to liquid-cooled electronics rack door
CN101902897A (en) * 2010-07-19 2010-12-01 深圳市中兴新通讯设备有限公司 Communication machine room cooling system

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102869237A (en) * 2012-09-13 2013-01-09 深圳市博恩实业有限公司 Heat radiating system for server and communication cabinet
CN102869237B (en) * 2012-09-13 2016-05-18 深圳市博恩实业有限公司 The cooling system of server and communication cabinet
CN103052304A (en) * 2012-12-14 2013-04-17 广州高澜节能技术股份有限公司 Server cabinet cooling system
CN103247349A (en) * 2013-04-16 2013-08-14 任曲波 Robot extrinsic cycle liquid cooling system
CN103617941A (en) * 2013-11-14 2014-03-05 中国科学院等离子体物理研究所 Liquid metal two-stage cooling method for high current ion source electrode
CN103744451A (en) * 2014-01-23 2014-04-23 浪潮电子信息产业股份有限公司 Water-cooling cabinet temperature keeping regulation and control method capable of improving noise and condensed water
CN104320953B (en) * 2014-09-19 2017-02-22 中国移动通信集团广东有限公司 Secondary water-loop server cabinet cooling system
CN105764308A (en) * 2016-04-19 2016-07-13 上海浪超电子电器有限公司太仓分公司 Intelligent split type water cooling radiator
CN106207822A (en) * 2016-09-09 2016-12-07 国家电网公司 A kind of box-type substation
CN106207822B (en) * 2016-09-09 2018-07-20 国家电网公司 A kind of box-type substation
CN108012513A (en) * 2017-12-29 2018-05-08 华南理工大学 It is a kind of without the in the ranks data center of air-conditioning and its cooling system
CN108012513B (en) * 2017-12-29 2023-10-20 华南理工大学 Data center without inter-row air conditioner and heat dissipation system thereof
CN109029005A (en) * 2018-09-14 2018-12-18 中国铁建重工集团有限公司 Cooling system and development machine with the cooling system
CN109029005B (en) * 2018-09-14 2024-04-26 中国铁建重工集团股份有限公司 Cooling system and heading machine with same
CN111821744A (en) * 2019-04-23 2020-10-27 西门子(深圳)磁共振有限公司 Water filtering device, water cooling system and water cooling method
CN111821744B (en) * 2019-04-23 2022-05-17 西门子(深圳)磁共振有限公司 Water cooling device for magnetic resonance device

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