CN102245006A - Cooling method and cooling system for electronic device - Google Patents
Cooling method and cooling system for electronic device Download PDFInfo
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- CN102245006A CN102245006A CN2011101077064A CN201110107706A CN102245006A CN 102245006 A CN102245006 A CN 102245006A CN 2011101077064 A CN2011101077064 A CN 2011101077064A CN 201110107706 A CN201110107706 A CN 201110107706A CN 102245006 A CN102245006 A CN 102245006A
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- 238000001816 cooling Methods 0.000 title claims abstract description 163
- 239000003507 refrigerant Substances 0.000 claims abstract description 168
- 239000007788 liquid Substances 0.000 claims abstract description 127
- 230000004087 circulation Effects 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 86
- 230000008859 change Effects 0.000 claims description 57
- 238000001704 evaporation Methods 0.000 claims description 47
- 238000000605 extraction Methods 0.000 claims description 26
- 239000006200 vaporizer Substances 0.000 claims description 15
- 238000002309 gasification Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000009833 condensation Methods 0.000 abstract description 16
- 230000005494 condensation Effects 0.000 abstract description 16
- 239000007789 gas Substances 0.000 description 109
- 230000009467 reduction Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008520 organization Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20836—Thermal management, e.g. server temperature control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
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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
- F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
- F25B23/006—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect boiling cooling systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
- G06F1/206—Cooling means comprising thermal management
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/208—Liquid cooling with phase change
- H05K7/20809—Liquid cooling with phase change within server blades for removing heat from heat source
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
- G06F2200/20—Indexing scheme relating to G06F1/20
- G06F2200/201—Cooling arrangements using cooling fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a cooling method and cooling system for an electroinc device. A cooling method and system for an electronic device 14 has a naturally circulating refrigerant vaporized at evaporators 20X, 20Y, by heat exchange with exhaust hot air from the electronic device, such as a server, to provide cooling of the exhaust hot air. The refrigerant circulates to a cooling tower 22 which is placed at a position higher than the evaporators, and the vaporized refrigerant is liquefied. A valve controls the flow rate of the refrigerant liquid to the evaporators such that an air temperature after heat has been exchanged for cooling by the evaporators becomes a temperature suited to the operating environment of the electronic device. In addition, the condensation temperature or a condensation pressure of the refrigerant gas in the cooling tower does not fluctuate even when the flow rate of the refrigerant liquid to be supplied to the evaporators is valve-controlled. Accordingly, it is possible to stably maintain natural circulation of the refrigerant and to prevent dew condensation on the evaporator surface.
Description
Technical field
The present invention relates to the cooling means and the cooling system of electronic equipment, especially relate to by making cold-producing medium natural circulation between evaporator and cooling tower (or condenser), be used for electronic equipments such as the computer that is provided in room server, server are carried out the cooling means and the cooling system of the electronic equipment of local cooling.
Background technology
At room server, electronic equipments such as a plurality of computers, server are being set with intensive state.Electronic equipment generally is a path frame mounting means, that is, the mode that will be contained in rack according to frame (framework) layer that electronic equipment is cut apart and taken in to functional unit is provided with, and a plurality of racks are arranged on the floor that is configured in room server.
These electronic equipments need the stationary temperature environment in order to move normally, if become the condition of high temperature, then have the possibility of faults such as causing that system stops.Therefore, be the stationary temperature environment by air conditioner with the room server management.But, in recent years, be accompanied by the processing speed of electronic equipment, the rapid rising of disposal ability, constantly rise from the caloric value of electronic equipment, the operating cost of air conditioner also significantly increases.
Because this background has proposed to be used for the various technology of cooling electronic apparatus effectively.For example, proposed in the patent documentation 1,, in view of the above, come electronic equipment is carried out the method for local cooling by this closed-loop path of cools down by being formed on the closed-loop path that electronic equipment passes through.
In addition, though also carry out regulating the method for cooling off room server by the floor blow out air that has used combined air conditioner machine (the empty Tone Machine of パ ッ ケ one ジ), but, because the temperature that is the part of causing for the heat extraction that suppresses from electronic equipment rises, and integral body in the room server is carried out air conditioning, so, have the problem of cooling effectiveness difference.Therefore, heat carries the shared ratio of required air-supply power big in the air-conditioning power.Therefore, with regard to strategy of Saving Energy, importantly how to reduce the gimmick of hot transmitting power.
Therefore, the cooling system of natural circulation mode of cold-producing medium that proposed use such shown in the patent documentation 2.In patent documentation 2, proposed at each evaporator flow rate regulating valve to be set in the mode that each evaporator can corresponding other heat load, the quantity delivered of the refrigerant liquid that the subtend evaporator is supplied with is carried out valve control, by the ability of indivedual adjustment evaporators, seeks energy-conservation scheme.Like this, the quantity delivered of the refrigerant liquid of supplying with by the subtend evaporator is carried out valve control, can enough evaporators cools off the heat extraction air from the high temperature of server rightly, and emits to room server.In view of the above, room server is controlled in the design temperature condition.
Technical literature formerly
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Application Publication 2006-507676 communique
Patent documentation 2: Japanese kokai publication hei 1-121641 communique
But, because valve control is the mechanism of adjusting refrigerant flow by the pipe arrangement change in resistance of the pipe arrangement that makes flow of refrigerant, so,, exist significantly in the cold-producing medium natural circulation mode of the operating condition of left and right sides cooling system at the pipe arrangement resistance because valve control causes the problem of the change of evaporating temperature.For example, exist because valve is controlled, the evaporating pressure of evaporator inside reduces, and causes the reduction of evaporating temperature to reach more than necessity, produces the situation that evaporator outlet temperature significantly reduces.Existence produces the possibility of dewfall because of the significantly reduction of this evaporator outlet temperature at evaporator surface.If produce dewfall at evaporator surface, then dew causes harmful effect to electronic equipment, and not only reliability reduces, and also has the problem that produces the energy loss that is used to prevent dewfall.
Have again, make cold-producing medium under the situation of natural circulation between evaporator and the cooling tower (or condenser), keep the pressure differential of the cold-producing medium evaporation side (vaporizer side) of the condensation of refrigerant side (cooling tower or condenser side) of low-pressure side and high pressure side rightly, make the natural circulation stabilisation aspect be important, the interlock of condensing pressure and evaporating pressure and condensing temperature and evaporating temperature.
Therefore, if because evaporating temperature change, then evaporating pressure also changes, so, the natural circulation that the produces cold-producing medium problem of unstable that becomes.
The present invention uses for reference such situation and the invention made, its purpose is, even provide a kind of refrigerant flow to carry out valve control to the evaporator in the cooling system of cold-producing medium natural circulation mode, also can stably keep the natural circulation of cold-producing medium, and the device surface that can avoid evaporating produces the cooling means and the cooling system of the electronic equipment of dewfall.
Summary of the invention
To achieve these goals, first invention provides a kind of cooling means of electronic equipment, the cooling means of described electronic equipment by with heat exchange from the heat extraction air of electronic equipment, make the cold-producing medium gasification, and the evaporator that this heat extraction air is cooled off and be configured in the position higher than above-mentioned evaporator, make between the cooling tower or condenser of above-mentioned vaporized cold-producing medium liquefaction, make above-mentioned cold-producing medium natural circulation, and with by above-mentioned evaporator heat exchange, and the air themperature after being cooled becomes the mode of the temperature of the operating environment that is suitable for above-mentioned electronic equipment, the flow of the refrigerant liquid that the above-mentioned evaporator of subtend is supplied with carries out valve control, it is characterized in that, even the flow of the refrigerant liquid that the above-mentioned evaporator of subtend is supplied with carries out valve control, the condensing temperature of the refrigerant gas in above-mentioned cooling tower or the condenser or condensing pressure can not change yet.
According to first invention,, also make as the cooling tower of the low-pressure side of cooling system or the condensing temperature or the condensing pressure of the refrigerant gas in the condenser not change even the flow of the refrigerant liquid that the subtend evaporator is supplied with carries out valve control.Like this,, control, suppressed the change of the evaporating pressure of vaporizer side in the mode that the condensing temperature or the condensing pressure of cooling tower side or condenser side do not change by in the valve control of carrying out vaporizer side.In view of the above, can stably keep the natural circulation of cold-producing medium, and the device surface that can avoid evaporating produces dewfall.
The evaporating pressure of the evaporator inside in the cold-producing medium natural circulation mode is by the difference of height decision of the condensing pressure in the condenser and evaporator and condenser.That is evaporator internal pressure=condensing pressure+head pressure reduction.In view of the above, if the evaporator internal pressure is constant at head pressure reduction, then the change because of condensing pressure changes.Therefore, even the flow of the refrigerant liquid of supplying with by the subtend evaporator carries out valve control, also make as the cooling tower of the low-pressure side of cooling system or the condensing pressure of the refrigerant gas in the condenser not change, can stably keep the natural circulation of cold-producing medium.In addition, because condensing temperature and condensing pressure interlock, so, do not change by making condensing temperature, can stably keep the natural circulation of cold-producing medium.
In addition, because comparing with condenser, evaporator is configured in the below, so the evaporator internal pressure must be the value higher than condensing pressure.In view of the above, if the condenser internal pressure is set to the cold-producing medium saturation temperature from indoor dew point temperature, then the evaporating temperature of evaporator is inevitable more than the dew point temperature of room air.Therefore, can avoid evaporating device surface produces dewfall.
To achieve these goals, second invention provides a kind of cooling system of electronic equipment, the cooling system of described electronic equipment by with heat exchange from the heat extraction air of electronic equipment, make the cold-producing medium gasification, and the evaporator that this heat extraction air is cooled off and be configured in the position higher than above-mentioned evaporator, make between the cooling tower of above-mentioned vaporized cold-producing medium liquefaction, make above-mentioned cold-producing medium natural circulation, and with by above-mentioned evaporator heat exchange, and the air themperature after being cooled becomes the mode of the temperature of the operating environment that is suitable for above-mentioned electronic equipment, the flow of the refrigerant liquid that the above-mentioned evaporator of subtend is supplied with carries out valve control, it is characterized in that, above-mentioned cooling tower possesses: the cooling tower main body of obtaining mouth and exhaust outlet that is formed with outer gas, be arranged in the above-mentioned cooling tower main body, inlet is connected with the gas pipe arrangement that refrigerant gas flowed that returns from above-mentioned evaporator, the heat exchanger coil that outlet is connected with the refrigerant liquid institute flowing liquid pipe arrangement of supplying with to above-mentioned evaporator, water sprayer to above-mentioned heat exchanger coil watering, from above-mentioned obtain the mouth obtain outside gas, to above-mentioned heat exchanger coil air-supply, and from the forced draft fan of above-mentioned exhaust outlet exhaust, adjust the air output of the air output of above-mentioned forced draft fan and adjust member, measure the refrigerant liquid temperature transducer of the refrigerant liquid temperature of above-mentioned heat exchanger coil outlet, mensuration temperature according to above-mentioned refrigerant liquid temperature transducer, control above-mentioned air output and adjust the controller of member, above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration temperature of above-mentioned refrigerant liquid temperature transducer, but be maintained at the mode of set point of temperature, adjust member by above-mentioned air output, control the air output of above-mentioned forced draft fan.
Even second invention has been represented the flow of the refrigerant liquid that the subtend evaporator is supplied with and has been carried out valve control, also made the constant concrete apparatus structure of employing of condensing temperature of the refrigerant gas in cooling tower or the condenser.
According to second invention, even because the quantity delivered of the refrigerant liquid that the subtend evaporator is supplied with is carried out valve control, the evaporating temperature change of evaporator, controller is also by the air output of control to the forced draft fan that cools off as the heat exchanger coil in the cooling tower of the low-pressure side of cooling system, the refrigerant liquid temperature of the heat exchanger coil outlet of cooling tower is not changed, but maintain set point of temperature.
In view of the above,, also can stably keep the natural circulation of cold-producing medium, and the device surface that can avoid evaporating produces dewfall even the refrigerant flow of the evaporator in the cooling system of cold-producing medium natural circulation mode is carried out valve control.
The 3rd invention is in second invention, it is characterized in that, above-mentioned refrigerant liquid temperature transducer is replaced with the refrigerant liquid pressure sensor, and above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration pressure of above-mentioned refrigerant liquid pressure sensor, but be maintained at the mode of authorized pressure, adjust member by above-mentioned air output, control the air output of above-mentioned forced draft fan.
The 3rd invention is to substitute the refrigerant liquid temperature of heat exchanger coil outlet, and the condensing pressure that heat exchanger coil is exported becomes the mode of authorized pressure and controls.
To achieve these goals, the 4th invention provides a kind of cooling system of electronic equipment, the cooling system of described electronic equipment by with heat exchange from the heat extraction air of electronic equipment, make the cold-producing medium gasification, and the evaporator that this heat extraction air is cooled off and be configured in the position higher than above-mentioned evaporator, make between the cooling tower of above-mentioned vaporized cold-producing medium liquefaction, make above-mentioned cold-producing medium natural circulation, and with by above-mentioned evaporator heat exchange, and the air themperature after being cooled becomes the mode of the temperature of the operating environment that is suitable for above-mentioned electronic equipment, the flow of the refrigerant liquid that the above-mentioned evaporator of subtend is supplied with carries out valve control, it is characterized in that, above-mentioned cooling tower possesses: the cooling tower main body of obtaining mouth and exhaust outlet that is formed with outer gas, be arranged in the above-mentioned cooling tower main body, inlet is connected with the gas pipe arrangement that refrigerant gas flowed that returns from above-mentioned evaporator, the heat exchanger coil that outlet is connected with the refrigerant liquid institute flowing liquid pipe arrangement of supplying with to above-mentioned evaporator, water sprayer to above-mentioned heat exchanger coil watering, from above-mentioned obtain the mouth obtain outside gas, to above-mentioned heat exchanger coil air-supply, and from the forced draft fan of above-mentioned exhaust outlet exhaust, measure the refrigerant liquid temperature transducer of the refrigerant liquid temperature of above-mentioned heat exchanger coil outlet, make the part of gas outside the exhaust of above-mentioned exhaust outlet exhaust return near above-mentioned obtaining the mouth, and with from above-mentioned obtain mouthful obtain the circulating line that outer gas mixes, the air circulation adjustment means that the air quantity of gas outside the exhaust that above-mentioned circulating line flows is regulated, mensuration temperature according to above-mentioned refrigerant liquid temperature transducer, control above-mentioned air circulation and adjust the controller of member, above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration temperature of above-mentioned refrigerant liquid temperature transducer, but be maintained at the mode of set point of temperature, adjust member by above-mentioned air circulation, be controlled at the air circulation of the outer gas of the mobile exhaust of above-mentioned circulating line.
Even the flow of the refrigerant liquid that the 4th invention is an expression subtend evaporator to be supplied with carries out valve control, also make the alternate manner of the constant concrete apparatus structure of employing of condensing temperature of the refrigerant gas of cooling tower.
According to the 4th invention, even because the quantity delivered of the refrigerant liquid that the subtend evaporator is supplied with is carried out valve control, the evaporating temperature change of evaporator, controller is the air circulation of the outer gas of discharge by being controlled at circulating line circulation also, the refrigerant liquid temperature of the heat exchanger coil outlet of cooling tower can not changed in linkage with above-mentioned change, but maintain set point of temperature.That is,, make the part of the outer gas of discharge that temperature rises because of the heat exchange on the heat exchanger coil return near obtaining the mouth of cooling tower main body, mix with gas outside obtaining obtaining that mouth obtains by circulating line is set.In view of the above, the wind pushing temperature to the heat exchanger coil air-supply changes.In addition, by adjusting the air circulation of circulating line, can adjust wind pushing temperature.In view of the above, the condensing temperature as the cooling tower of the low-pressure side of cooling system can be maintained set point of temperature consistently.
Therefore,, also can stably keep the natural circulation of cold-producing medium, and the device surface that can avoid evaporating produces dewfall even the refrigerant flow of the evaporator in the cooling system of cold-producing medium natural circulation mode is carried out valve control.
The 5th invention is in the 4th invention, it is characterized in that, above-mentioned refrigerant liquid temperature transducer is replaced with the refrigerant liquid pressure sensor, and above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration pressure of above-mentioned refrigerant liquid pressure sensor, but be maintained at the mode of authorized pressure, adjust member by above-mentioned air circulation, be controlled at the air circulation of the outer gas of the mobile exhaust of above-mentioned circulating line.
The 5th invention is to substitute the refrigerant liquid temperature of heat exchanger coil outlet, and the condensing pressure that heat exchanger coil is exported becomes the mode of authorized pressure and controls.
To achieve these goals, the 6th invention provides a kind of cooling system of electronic equipment, the cooling system of described electronic equipment by with heat exchange from the heat extraction air of electronic equipment, make the cold-producing medium gasification, and the evaporator that this heat extraction air is cooled off and be configured in the position higher than above-mentioned evaporator, make between the cold water type condenser of above-mentioned vaporized cold-producing medium liquefaction, make above-mentioned cold-producing medium natural circulation, and with by above-mentioned evaporator heat exchange, and the air themperature after being cooled becomes the mode of the temperature of the operating environment that is suitable for above-mentioned electronic equipment, the flow of the refrigerant liquid that the above-mentioned evaporator of subtend is supplied with carries out valve control, it is characterized in that, above-mentioned cold water type condenser is that inlet is connected with the gas pipe arrangement that refrigerant gas flowed that returns from above-mentioned evaporator, outlet is connected with the refrigerant liquid institute flowing liquid pipe arrangement of supplying with to above-mentioned evaporator, and obtain being used for the cold water supplied with to above-mentioned cold water type condenser by through the Cold water supply pipe arrangement, above-mentioned refrigerant gas is condensed into the cold and hot condenser of above-mentioned refrigerant liquid, described cold water type condenser possesses: be arranged on the above-mentioned Cold water supply pipe arrangement, the cool water quantity that the cold water flow that the above-mentioned cold water type condenser of subtend is supplied with is adjusted is adjusted member, measure the refrigerant liquid temperature transducer of the refrigerant liquid temperature of above-mentioned cold water type condensator outlet, mensuration temperature according to above-mentioned refrigerant liquid temperature transducer, control above-mentioned cool water quantity and adjust the controller of member, above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration temperature of above-mentioned refrigerant liquid temperature transducer, but be maintained at the mode of set point of temperature, adjust member by above-mentioned cool water quantity, the cold water flow that control is supplied with to above-mentioned cold water type condenser.
Even the flow of the refrigerant liquid that the 6th invention is an expression subtend evaporator to be supplied with carries out valve control, also make the other alternate manner of the constant concrete apparatus structure of employing of condensing temperature of the refrigerant gas in the cold water type condenser.
According to the 6th invention, even because the quantity delivered of the refrigerant liquid that the subtend evaporator is supplied with is carried out valve control, the evaporating temperature change of evaporator, controller also by control to cold water flow as the cold water type condenser feeding cold water of the low-pressure side of cooling system, the refrigerant liquid temperature of cold water type condensator outlet is not changed in linkage with above-mentioned change.
Therefore,, also can stably keep the natural circulation of cold-producing medium, and the device surface that can avoid evaporating produces dewfall even the refrigerant flow of the evaporator in the cooling system of cold-producing medium natural circulation mode is carried out valve control.
The 7th invention is in the 6th invention, it is characterized in that, above-mentioned refrigerant liquid temperature transducer is replaced with the refrigerant liquid pressure sensor, and above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration pressure of above-mentioned refrigerant liquid pressure sensor, but be maintained at the mode of authorized pressure, adjust member by above-mentioned cool water quantity, control the cold water flow of above-mentioned Cold water supply stream.
The 7th invention to be to substitute the refrigerant liquid temperature of cold water type condensator outlet, and the mode that makes the condensing pressure of cold water type condensator outlet become authorized pressure is controlled.
The 8th invention is in the 6th invention, it is characterized in that, the temperature degree is under the situation below 10 ℃ outside, uses outer gas to cool off water to above-mentioned cold water type condenser supply.
According to this structure, the temperature degree is under the following situation of 10 degree outside, can flexible Application not use so-called refrigerator, only promptly can cool off " natural cooling " of cold water with outer gas, can further reduce the power cost of air-conditioning system cost.
The invention effect
As described above, cooling means and cooling system according to electronic equipment of the present invention, even the refrigerant flow to the evaporator in the cooling system of cold-producing medium natural circulation mode carries out valve control, also can stably keep the natural circulation of cold-producing medium, and the device surface that can avoid evaporating produces dewfall.
Description of drawings
Fig. 1 is the integrally-built concept map of first execution mode of the cooling system of explanation electric equipment of the present invention.
Fig. 2 is the integrally-built concept map of second execution mode of the cooling system of explanation electric equipment of the present invention.
Fig. 3 is the key diagram of the structure of explanation circulating line type cooling tower.
Fig. 4 is the integrally-built concept map of the 3rd execution mode of the cooling system of explanation electric equipment of the present invention.
Embodiment
Below, with reference to the accompanying drawings, describe the cooling means of relevant electronic equipment of the present invention and the preferred implementation of cooling system in detail.
In the present embodiment, be that example describes as electronic equipment with the server that is configured in room server.
(first execution mode of the present invention)
Fig. 1 is the integrally-built concept map of first execution mode of the cooling system 10 of expression electronic equipment.
Under the floor 13 of each room server 12X, 12Y, form underground chamber 18X, 18Y, a plurality of blow-off outlets through being formed at floor 13 of underground chamber 18X, 18Y and room server 12X, 12Y (not shown go out) are communicated with.To underground chamber 18X, 18Y air feed, this adjusting air blows out to room server 12X, 12Y from blow-off outlet by the adjusting air of combined air conditioner machine etc. (not shown go out) cooling.In addition, blow-off outlet be formed on server 14 attraction mouth 14A near, by attracting this to regulate air, can cool off server 14 effectively by server 14.
Have, server 14 is by cooling system 10 local coolings again.
As the cold-producing medium of circulation, can use freon or the HFC of freon (hydrogen-containing carbon fluoride) etc. as an alternative.In addition, if under the pressure that forces down than atmosphere, use, also can make water.
Then, by the quantity delivered of control to the refrigerant liquid of evaporator 20X, 20Y supply, cooling has been cooled off air themperature behind the high temperature air of server 14 exhausts (from server 14 through evaporator 20X, the 20Y temperature to the evacuating air of room server 12X, 12Y exhaust) by evaporator 20X, 20Y, room server 12X, 12Y is maintained the temperature environment that is suitable for server 14.Promptly, near the outlet of the evacuating air 21 of room server 12X, 12Y exhaust, temperature sensor 23X, 23Y are being set from each evaporator 20X, 20Y, and flow rate regulating valve 25X, the 25Y of the flow of adjusting refrigerant liquid are being set on branched pipe 24X, the 24Y of liquid pipe arrangement 24.And the mensuration temperature of being measured by temperature sensor 23X, 23Y is transfused to controller 17, and controller 17 is individually controlled the aperture of flow rate regulating valve 25X, 25Y respectively according to measuring temperature.In view of the above, evaporator 20X, 20Y that can be different with respect to the height of the upper and lower supply with and to be used to the appropriate refrigerant flow that makes the evacuating air temperature identical.Its result is will adjust to the temperature environment of the running that is suitable for server 14 to the exhaust temperature of room server 12X, 12Y exhaust through evaporator 20X, 20Y from server 14.
Then, cooling tower 22 is described.
As shown in Figure 1, cooling tower 22 is adapted to cooling tower main body (housing) 30 horizontal, and gas obtains a mouthful 30A, the exhaust outlet 30B of gas outside another distolateral formation outside a distolateral formation of cooling tower main body 30 is obtained.Heat exchanger coil 28 is set in cooling tower main body 30, the inlet of heat exchanger coil 28 is connected with the gas pipe arrangement 26 that refrigerant gas flowed that returns from evaporator 20X, 20Y, and the outlet of heat exchanger coil 28 is connected with the refrigerant liquid institute flowing liquid pipe arrangement of supplying with to evaporator 20X, 20Y 24.
In addition, in mouthful 30A side of obtaining of heat exchanger coil 28 water sprayer 34 is set, and more Air Blast fan 36 is being set by obtaining a mouthful 30A side than water sprayer 34.Like this, by Air Blast fan 36 will from cooling tower main body 30 obtain outside the obtaining that mouthful 30A obtains gas X to heat exchanger coil 28 air-supplies, and from water sprayer 34 to heat exchanger coil 28 waterings.In view of the above, gas, watering cooling and condensation are liquefied as refrigerant liquid outside the refrigerant gas quilt that heat exchanger coil 28 flows.On the other hand, the outer gas X that obtains that gets access in the cooling tower main body 30 captures heat from the refrigerant gas that flows at heat exchanger coil 28, and temperature rises, and is discharged from as gas Y outside the exhaust from exhaust outlet 30B.
Be applied at cooling system under the situation of server cooling of data center this cold-producing medium natural circulation mode, the situation of 22 ℃～28 ℃ of design temperatures that the outlet air temperature of the evaporator 20X20Y that the exhaust of server 14 is cooled off is configured to general room server is a lot, and the cold-producing medium evaporating temperature of evaporator 20X20Y inside need be about 18 ℃～24 ℃.
In the cold-producing medium natural circulation mode, temperature with respect to evaporator 20X20Y, need make temperature as the heat exchanger coil 28 of cooling tower 22 inside of condenser is low temperature about 2～6 ℃, need be about 12 ℃～18 ℃ as the condensation of refrigerant temperature of heat exchanger coil 28 inside of condenser.
On the other hand, in this cooling tower 22, by the outer gas of the low temperature that uses winter and intergrade, the outer gas watering of also oriented low temperature, become on the basis of the outer gas of low temperature more at the heat of gasification of the outer gas that makes low temperature by watering, heat exchanger coil 28 to cooling tower 22 inside ventilates, and cold-producing medium is cooled off.Here, if the outer gas of the condensation of refrigerant temperature low temperature that requires in the specific heat exchange coil pipe 28 then can not use the heat resource equipment of making cold water, cold-producing medium is cooled off.In general design, the condensation of refrigerant temperature is about 12 ℃～18 ℃, if also consider the heat exchanger effectiveness of heat exchanger coil, then as long as outer temperature degree below 15 ℃, just can only fully cool off by outer gas.
In addition, on cooling tower 22, be provided be used for the temperature constant of the refrigerant liquid of heat exchanger coil 28 outlet maintain the controlling organization 42 of setting.
Controlling organization 42 is by the refrigerant liquid temperature transducer 44 of the temperature of the refrigerant liquid of measuring heat exchanger coil 28 outlets, by changing the rotating speed of Air Blast fan 36, the air output of adjusting to the air output of heat exchanger coil 28 air-supply from Air Blast fan 36 is adjusted member 36A and according to the mensuration temperature of refrigerant liquid temperature transducer 44, the controller 46 that the control air output is adjusted member 36A constitutes.In addition, controller 46 also can dual-purpose controller 17, also can image pattern 1 be provided for the controller 46 of cooling tower 22 like that separately.In the present embodiment, situation about being provided with is separately described.
The effect of the cooling system 10 of above-mentioned such electronic equipment that constitutes then, is described.
At evaporator 20X, 20Y, refrigerant liquid gasification in view of the above, is cooled off the heat extraction air from the high temperature of server 14.On the other hand, at cooling tower 22, by cooling off the refrigerant gas of flash- pot 20X, 20Y, make it condensation and liquefy, the refrigerant liquid of liquefaction runs down into evaporator 20X, 20Y because of gravity.In view of the above, form the natural circulation of cold-producing medium.Then, controller 17 monitors the air themperature of being measured by temperature sensor 23X, 23Y, promptly, supervision will be from the air themperature after the heat extraction air cooling of server 14 by evaporator 20X, 20Y, the mode that becomes the temperature of the operating environment that is suitable for server 14 with air themperature is controlled flow rate regulating valve 25X, 25Y, is adjusted at the flow of the mobile refrigerant gas of liquid pipe arrangement.By this valve control, controlled rightly by the cooled air themperature of evaporator 20X, 20Y.
But, because valve control is the operation of adjusting the resistance of liquid pipe arrangement, so, the evaporating pressure change of evaporator 20X, 20Y inside.Because it is unstable that the change of this evaporating pressure, the natural circulation of cold-producing medium become, and cause evaporating temperature necessity to reduce abovely, there is the problem that significantly reduces of the refrigerant gas temperature that produces evaporator 20X, 20Y outlet.In addition, be accompanied by the reduction of evaporating temperature, produce dewfall, worry the server 14 as precision equipment is caused harmful effect on the surface of evaporator 20X, 20Y.
Therefore, in the present invention,, the condensing temperature of the refrigerant gas of cooling tower 22 is not changed even the flow of the refrigerant liquid of being supplied with by flow rate regulating valve 25X, 25Y subtend evaporator 20X, 20Y carries out valve control.
That is, controller 46 monitors whether the condensing temperature of being measured by the refrigerant liquid temperature transducer 44 of heat exchanger coil 28 outlets changes with respect to set point of temperature.Here, set point of temperature for example can be made as for the cold-producing medium necessary condensing temperature of natural circulation stably.
And, measuring under the situation of temperature with respect to the set point of temperature change, the air output of controller 46 control cooling towers 22 is adjusted member 36A, change the rotating speed of Air Blast fan 36, become the mode of set point of temperature with the mensuration temperature of refrigerant liquid temperature transducer 44, adjust the air output that heat exchanger coil 28 is cooled off.
Like this,, control, suppress the change of the evaporating pressure of evaporator 20X, 20Y side in the mode that the condensing temperature of cooling tower 22 sides does not change by in the valve control of carrying out evaporator 20X, 20Y side.That is,, the pressure of the high pressure side in the natural circulation of cold-producing medium can be stably kept, the natural circulation stabilisation of cold-producing medium can be made by eliminating the temperature change of cooling tower 22 sides.
In view of the above,, also can stably keep the natural circulation of cold-producing medium, and the device surface that can avoid evaporating produces dewfall even the refrigerant flow of evaporator 20X, 20Y in the cooling system of cold-producing medium natural circulation mode is carried out valve control.
In addition, the mensuration temperature of refrigerant liquid temperature transducer 44 with respect to set point of temperature changed what the degree after, controller 46 carries out controlling and driving, can set rightly, for example, preferably change temperature design temperature ± 1 ℃ in.Below shown in mode of the present invention too.
(second execution mode of the present invention)
Fig. 2 is the integrally-built concept map of second execution mode of the cooling system 10 of expression electronic equipment, is as the device with the refrigerant gas condensation, is provided with the situation of circulating line type cooling tower.
In addition, to the part mark identical symbol common, and omit explanation with first execution mode.
As Fig. 2 and shown in Figure 3, at mouthful lateral opening of 30A side that obtains of cooling tower main body 30 connect apertures 30C is arranged, and the part of exhaust outlet 30B and connect apertures 30C are linked by circulating line 38.In view of the above, because the part of gas Y is recycled to by circulating line 38 and obtains near mouthful 30A outside the exhaust that the temperature of exhaust outlet 30B exhaust has risen, so, the outer gas Y of exhaust and obtain outer gas X mixing.Its result is to be risen by Air Blast fan 36 outer temperature degree of gas Z outside the air-supply of heat exchanger coil 28 air-supplies.
In this case, preferably the gas pipe arrangement 26 that returns to cooling tower 22 from evaporator 20X, 20Y connects the sidewall of circulating lines 38, circulating line 38 in by and with the inlet binding of heat exchanger coil 28.In view of the above, because the part of gas pipe arrangement 26 is incorporated in the circulating line 38, so, can be effectively carry out heat exchange at the outer gas Y of the exhaust that circulating line 38 flows with between the mobile refrigerant gas of gas pipe arrangement 26.Therefore because the outer gas Y of exhaust can capture heat in a large number from heat exchanger coil 28, so, can with temperature than gas Y outside the exhaust that gas Y is high outside the exhaust of exhaust outlet 30B exhaust be mixed into obtain outside the gas X.
In addition, throttle setting 40 is set in the way of circulating line 38,, adjusts the combined amount (comprising that also combined amount is 0) of gas Y outside the exhaust that gas X mixes outside obtaining by regulating the aperture of (comprising that also aperture is 0) throttle setting 40.
Have, at cooling tower 22 controller 46 is set, this controller 46 becomes the mode of set point of temperature with the condensing temperature by heat exchanger coil 28 condensed refrigerant gases, is controlled at the air quantity of the outer gas Y of exhaust that circulating line 38 flows by throttle setting 40.Here, set point of temperature can be made as the cold-producing medium necessary condensing temperature that stably circulates for example in cooling system of the present invention between evaporator 20X, 20Y and cooling tower 22.
Then, controller 46 is according to the mensuration temperature from the refrigerant liquid temperature transducer 44 that is arranged on heat exchanger coil 28 outlets, becomes the mode of set point of temperature, the aperture of control throttle setting 40 with the mensuration temperature of refrigerant liquid temperature transducer 44.
Effect to above-mentioned such second execution mode of the present invention that constitutes describes.
In addition, as mentioned above, mentioned and obtained outer gas X, the outer gas Y of exhaust, these three kinds of outer gas of the outer gas Z of air-supply, as following, separately used.That is, obtaining outer gas X refers to from obtaining the outer gas that does not add change that mouthful 30A obtains.The outer gas Z that blows refers to by the outer gas of Air Blast fan 36 to heat exchanger coil 28 air-supply, comprises it only being to obtain the outer gas of outer gas X and obtain outer gas X and exhaust these two kinds in the mixed outer gas of gas Y outward.The outer gas Y of the exhaust outer gas Z that refers to blow contacts with heat exchanger coil 28 and has carried out the outer gas that the temperature after the heat exchange has risen.
Before the running of cooling system 10 began, the aperture that makes throttle setting 40 was the state of 0 (closed condition), entry into service under this state.Promptly, it is mobile to turn back to the refrigerant gas one side heat exchanger coil 28 cooling tower 22 in of cooling tower 22 by gas pipe arrangement 26 from evaporator 20X, 20Y, one side is by obtaining outer gas X and cool off from the watering of water sprayer 34 from what obtain that mouthful 30A obtains by Air Blast fan 36, and condensation.In view of the above, refrigerant gas liquefaction becomes refrigerant liquid, flows at liquid pipe arrangement 24, supplies with to evaporator 20X, 20Y.On the other hand, the outer gas Z of air-supply that has contacted with heat exchanger coil 28 captures heat from refrigerant gas, and temperature rises, become the outer gas Y of exhaust, and 30B is deflated from exhaust outlet.
In addition, the refrigerant liquid that has been liquefied by heat exchanger coil 28 is measured by refrigerant liquid temperature transducer 44 in heat exchanger coil 28 outlets, measures temperature successively to controller 46 transmission.Controller 46 is under the mensuration temperature of the refrigerant liquid situation lower than set point of temperature, throttle setting 40 is opened, the part of the outer gas Y of exhaust that temperature risen is circulated near obtaining mouthful 30A through circulating line 38, be mixed into and obtain outer gas X, and aperture control by throttle setting 40, become the mode of set point of temperature with the mensuration temperature of measuring by refrigerant liquid temperature transducer 44, be controlled at the air quantity of the outer gas Y of exhaust that circulating line 38 flows.
And, under the situation of mensuration temperature with respect to the set point of temperature change of refrigerant liquid temperature transducer 44, controller 46 controls are formed on the throttle setting 40 of the circulating line 38 on the cooling tower 22, become the mode of set point of temperature with the mensuration temperature of refrigerant liquid temperature transducer 44, adjust the temperature of gas outside the air-supply of heat exchanger coil 28 air-supplies.
Like this, by in the valve control of carrying out evaporator 20X, 20Y side,, suppress the change of the evaporating pressure of evaporator 20X, 20Y side so that the mode that the condensing temperature of cooling tower 22 sides does not change is controlled.That is,, the pressure of the high pressure side in the natural circulation of cold-producing medium can be stably kept, the natural circulation stabilisation of cold-producing medium can be made by eliminating the temperature change of circulating line type cooling tower 22 sides.
In view of the above,, also can stably keep the natural circulation of cold-producing medium, and the device surface that can avoid evaporating produces dewfall even the refrigerant flow of evaporator 20X, 20Y in the cooling system of cold-producing medium natural circulation mode is carried out valve control.
(the 3rd execution mode of the present invention)
Fig. 4 is the integrally-built concept map of the 3rd execution mode of the cooling system 10 of expression electronic equipment, is as the device with the refrigerant gas condensation, the cooling tower 22 in first and second execution mode is replaced with the situation of cold water type condenser 48.
In addition, to the part mark identical symbol common, and omit explanation with first and second execution mode.
As shown in Figure 4, the Cold water supply coil pipe 50 that the heat exchanger coil 28 that links with gas pipe arrangement 26 and liquid pipe arrangement 24 is set in cold water type condenser bodies 49 (housing) and links with the not shown cold water supply apparatus that goes out.Then, carry out heat exchange by the refrigerant gas that flows at heat exchanger coil 28 with in Cold water supply coil pipe 50 flowing cold water, refrigerant gas is cooled and condensation, and liquefying is refrigerant liquid.
Be applied at cooling system under the situation of server cooling of data center this cold-producing medium natural circulation mode, the situation of 22 ℃～28 ℃ of design temperatures that the outlet air temperature of the evaporator 20X20Y that the exhaust of server 14 is cooled off is configured to general room server is a lot, and the cold-producing medium evaporating temperature of evaporator 20X20Y inside need be about 18 ℃～24 ℃.
In the cold-producing medium natural circulation mode, temperature with respect to evaporator 20X20Y, need make temperature as the heat exchanger coil 28 of cooling tower 22 inside of condenser is low temperature about 2～6 ℃, need be about 12 ℃～18 ℃ as the condensation of refrigerant temperature of heat exchanger coil 28 inside of condenser.
On the other hand, in this cold water type condenser bodies 49, make about 7 ℃～12 ℃ cold water usually by the heat resource equipment of making cold water, make it at Cold water supply coil pipe 50 internal circulations, in view of the above, condensating refrigerant.Here, the cold water that uses the so-called natural cooling system by the outer gas manufacturing of the low temperature that uses winter and intergrade cold water to produce at the cold water of Cold water supply coil pipe 50 internal circulations in view of the above, not needing can to realize the energy-saving operation of the running of heat resource equipment.In this case, the outer temperature degree of cold water of the necessary temperature of condensation that can make cold-producing medium effectively in general design below 10 ℃.
In addition, in heat exchanger coil 28 outlets the refrigerant liquid temperature transducer of measuring by the condensing temperature of cold water type condenser 48 condensed refrigerant 44 is being set, and is being adjusted at the cool water quantity adjustment valve 52 of the flow of Cold water supply coil pipe 50 flowing cold water in the outlet setting of Cold water supply coil pipe 50.
The refrigerant temperature of being measured by refrigerant liquid temperature transducer 44 is input to controller 46 successively, monitors whether refrigerant temperature changes with respect to set point of temperature.Have again, controller 46 is adjusted valve 52 by cool water quantity, be not controlled to be the evaporating temperature change change in linkage of evaporator 20X, the 20Y of cause with valve with evaporator 20X, 20Y side with the mensuration temperature of refrigerant liquid temperature transducer 44, but maintain the mode of set point of temperature, the cold water flow that control is supplied with to cold water type condenser 48.
In view of the above, under the situation of the 3rd execution mode of the present invention, even also be that refrigerant flow to evaporator 20X, 20Y in the cooling system of cold-producing medium natural circulation mode carries out valve control, also can stably keep the natural circulation of cold-producing medium, and the device surface that can avoid evaporating produces dewfall.
In addition, in first execution mode to the, three execution modes, temperature sensor has been disposed in heat exchanger coil 28 outlets at cooling tower 22 (also comprising the circulating line type) or cold water type condenser 48, but, also can be pressure sensor (not shown go out), controller 46 is not controlled to be the evaporating temperature change change in linkage of evaporator 20X, the 20Y of cause with the mensuration pressure of pressure sensor with the valve with evaporator 20X, 20Y side, but the mode that maintains authorized pressure is controlled.
Here, authorized pressure can for example be made as for the cold-producing medium necessary condensing pressure of natural circulation stably.
Symbol description
10: the cooling system of electronic equipment; 12X, 12Y: room server; 13: floor; 14: server; 15: cooling device; 17: controller; 18X, 18Y: underground chamber; 20X, 20Y: evaporator; 22: condenser; 23X, 23Y: temperature sensor; 24: the liquid pipe arrangement; 24X, 24Y: branched pipe; 25X, 25Y: flow rate regulating valve; 26: the gas pipe arrangement; 26X, 26Y: branched pipe; 28: heat exchanger coil; 30: the cooling tower main body; 32: coupling member; 34: water sprayer; 36: Air Blast fan; 36A: air output is adjusted member; 38: circulating line; 40: throttle setting; 42: controlling organization; 44: the refrigerant liquid temperature transducer; 46: controller; 48: the cold water type condenser; 50: the Cold water supply coil pipe; 52: cool water quantity is adjusted valve; X: obtain outer gas; Y: the outer gas of exhaust; Z: the outer gas of blowing.
Claims (8)
1. the cooling means of an electronic equipment, the cooling means of described electronic equipment by with heat exchange from the heat extraction air of electronic equipment, make the cold-producing medium gasification, and the evaporator that this heat extraction air is cooled off and be configured in the position higher than above-mentioned evaporator, make between the cooling tower or condenser of above-mentioned vaporized cold-producing medium liquefaction, make above-mentioned cold-producing medium natural circulation, and with by above-mentioned evaporator heat exchange, and the air themperature after being cooled becomes the mode of the temperature of the operating environment that is suitable for above-mentioned electronic equipment, the flow of the refrigerant liquid that the above-mentioned evaporator of subtend is supplied with carries out valve control, it is characterized in that
Even the flow of the refrigerant liquid that the above-mentioned evaporator of subtend is supplied with carries out valve control, the condensing temperature of the refrigerant gas in above-mentioned cooling tower or the condenser or condensing pressure can not change yet.
2. the cooling system of an electronic equipment, the cooling system of described electronic equipment by with heat exchange from the heat extraction air of electronic equipment, make the cold-producing medium gasification, and the evaporator that this heat extraction air is cooled off and be configured in the position higher than above-mentioned evaporator, make between the cooling tower of above-mentioned vaporized cold-producing medium liquefaction, make above-mentioned cold-producing medium natural circulation, and with by above-mentioned evaporator heat exchange, and the air themperature after being cooled becomes the mode of the temperature of the operating environment that is suitable for above-mentioned electronic equipment, the flow of the refrigerant liquid that the above-mentioned evaporator of subtend is supplied with carries out valve control, it is characterized in that
Above-mentioned cooling tower possesses:
Be formed with outer gas obtain mouthful and the cooling tower main body of exhaust outlet,
Be arranged in the above-mentioned cooling tower main body, inlet is connected with the gas pipe arrangement that refrigerant gas flowed that returns from above-mentioned evaporator, the heat exchanger coil that outlet is connected with the refrigerant liquid institute flowing liquid pipe arrangement of supplying with to above-mentioned evaporator,
To the water sprayer of above-mentioned heat exchanger coil watering,
Obtain outer gas from the above-mentioned mouth that obtains, blow to above-mentioned heat exchanger coil, and from the forced draft fan of above-mentioned exhaust outlet exhaust,
The air output of adjusting the air output of above-mentioned forced draft fan adjust member,
Measure the refrigerant liquid temperature of above-mentioned heat exchanger coil outlet the refrigerant liquid temperature transducer,
According to the mensuration temperature of above-mentioned refrigerant liquid temperature transducer, control the controller that above-mentioned air output is adjusted member,
Above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration temperature of above-mentioned refrigerant liquid temperature transducer, but be maintained at the mode of set point of temperature, adjust member by above-mentioned air output, control the air output of above-mentioned forced draft fan.
3. the cooling system of electronic equipment as claimed in claim 2, it is characterized in that, above-mentioned refrigerant liquid temperature transducer is replaced with the refrigerant liquid pressure sensor, and above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration pressure of above-mentioned refrigerant liquid pressure sensor, but be maintained at the mode of authorized pressure, adjust member by above-mentioned air output, control the air output of above-mentioned forced draft fan.
4. the cooling system of an electronic equipment, the cooling system of described electronic equipment by with heat exchange from the heat extraction air of electronic equipment, make the cold-producing medium gasification, and the evaporator that this heat extraction air is cooled off and be configured in the position higher than above-mentioned evaporator, make between the cooling tower of above-mentioned vaporized cold-producing medium liquefaction, make above-mentioned cold-producing medium natural circulation, and with by above-mentioned evaporator heat exchange, and the air themperature after being cooled becomes the mode of the temperature of the operating environment that is suitable for above-mentioned electronic equipment, the flow of the refrigerant liquid that the above-mentioned evaporator of subtend is supplied with carries out valve control, it is characterized in that
Above-mentioned cooling tower possesses:
Be formed with outer gas obtain mouthful and the cooling tower main body of exhaust outlet,
Be arranged in the above-mentioned cooling tower main body, inlet is connected with the gas pipe arrangement that refrigerant gas flowed that returns from above-mentioned evaporator, the heat exchanger coil that outlet is connected with the refrigerant liquid institute flowing liquid pipe arrangement of supplying with to above-mentioned evaporator,
To the water sprayer of above-mentioned heat exchanger coil watering,
Obtain outer gas from the above-mentioned mouth that obtains, blow to above-mentioned heat exchanger coil, and from the forced draft fan of above-mentioned exhaust outlet exhaust,
Measure the refrigerant liquid temperature of above-mentioned heat exchanger coil outlet the refrigerant liquid temperature transducer,
Make the part of gas outside the exhaust of above-mentioned exhaust outlet exhaust return near above-mentioned obtaining the mouth, and with from above-mentioned obtain mouthful obtain circulating line that outer gas mixes,
The air circulation adjustment means that the air quantity of gas outside the exhaust that above-mentioned circulating line flows is regulated,
According to the mensuration temperature of above-mentioned refrigerant liquid temperature transducer, control the controller that above-mentioned air circulation is adjusted member,
Above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration temperature of above-mentioned refrigerant liquid temperature transducer, but be maintained at the mode of set point of temperature, adjust member by above-mentioned air circulation, be controlled at the air circulation of the outer gas of the mobile exhaust of above-mentioned circulating line.
5. the cooling system of electronic equipment as claimed in claim 4, it is characterized in that, above-mentioned refrigerant liquid temperature transducer is replaced with the refrigerant liquid pressure sensor, and above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration pressure of above-mentioned refrigerant liquid pressure sensor, but be maintained at the mode of authorized pressure, adjust member by above-mentioned air circulation, be controlled at the air circulation of the outer gas of the mobile exhaust of above-mentioned circulating line.
6. the cooling system of an electronic equipment, the cooling system of described electronic equipment by with heat exchange from the heat extraction air of electronic equipment, make the cold-producing medium gasification, and the evaporator that this heat extraction air is cooled off and be configured in the position higher than above-mentioned evaporator, make between the cold water type condenser of above-mentioned vaporized cold-producing medium liquefaction, make above-mentioned cold-producing medium natural circulation, and with by above-mentioned evaporator heat exchange, and the air themperature after being cooled becomes the mode of the temperature of the operating environment that is suitable for above-mentioned electronic equipment, the flow of the refrigerant liquid that the above-mentioned evaporator of subtend is supplied with carries out valve control, it is characterized in that
Above-mentioned cold water type condenser is
Inlet is connected with the gas pipe arrangement that refrigerant gas flowed that returns from above-mentioned evaporator, outlet is connected with the refrigerant liquid institute flowing liquid pipe arrangement of supplying with to above-mentioned evaporator, and obtain being used for the cold water supplied with to above-mentioned cold water type condenser by through the Cold water supply pipe arrangement, above-mentioned refrigerant gas is condensed into the cold and hot condenser of above-mentioned refrigerant liquid
Described cold water type condenser possesses:
Be arranged on the above-mentioned Cold water supply pipe arrangement, the cool water quantity adjustment member that the cold water flow that the above-mentioned cold water type condenser of subtend is supplied with is adjusted,
Measure the refrigerant liquid temperature of above-mentioned cold water type condensator outlet the refrigerant liquid temperature transducer,
According to the mensuration temperature of above-mentioned refrigerant liquid temperature transducer, control the controller that above-mentioned cool water quantity is adjusted member,
Above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration temperature of above-mentioned refrigerant liquid temperature transducer, but be maintained at the mode of set point of temperature, adjust member by above-mentioned cool water quantity, the cold water flow that control is supplied with to above-mentioned cold water type condenser.
7. the cooling system of electronic equipment as claimed in claim 6, it is characterized in that, above-mentioned refrigerant liquid temperature transducer is replaced with the refrigerant liquid pressure sensor, and above-mentioned controller can not be controlled to be the evaporating temperature change change in linkage of the above-mentioned evaporator of cause with the valve with above-mentioned vaporizer side with the mensuration pressure of above-mentioned refrigerant liquid pressure sensor, but be maintained at the mode of authorized pressure, adjust member by above-mentioned cool water quantity, control the cold water flow of above-mentioned Cold water supply stream.
8. the cooling system of electronic equipment as claimed in claim 6 is characterized in that, the temperature degree is under the situation below 10 ℃ outside, uses outer gas to cool off the water of supplying with to above-mentioned cold water type condenser.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010106788A JP2011237887A (en) | 2010-05-06 | 2010-05-06 | Cooling method and cooling system for electronic equipment |
| JP2010-106788 | 2010-05-06 |
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| CN102245006A true CN102245006A (en) | 2011-11-16 |
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| CN2011101077064A Pending CN102245006A (en) | 2010-05-06 | 2011-04-28 | Cooling method and cooling system for electronic device |
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| Country | Link |
|---|---|
| US (1) | US20110271695A1 (en) |
| JP (1) | JP2011237887A (en) |
| CN (1) | CN102245006A (en) |
| GB (1) | GB2480152B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2011237887A (en) | 2011-11-24 |
| GB201107469D0 (en) | 2011-06-15 |
| NL2006727A (en) | 2011-11-08 |
| NL2006727C2 (en) | 2012-08-14 |
| SG176365A1 (en) | 2011-12-29 |
| GB2480152B (en) | 2012-11-21 |
| GB2480152A (en) | 2011-11-09 |
| US20110271695A1 (en) | 2011-11-10 |
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