CN107466187A - A kind of liquid cooling heat-exchanger and its control method - Google Patents
A kind of liquid cooling heat-exchanger and its control method Download PDFInfo
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- CN107466187A CN107466187A CN201710670985.2A CN201710670985A CN107466187A CN 107466187 A CN107466187 A CN 107466187A CN 201710670985 A CN201710670985 A CN 201710670985A CN 107466187 A CN107466187 A CN 107466187A
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- 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
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
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- 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
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20281—Thermal management, e.g. liquid flow control
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Abstract
The invention discloses a kind of liquid cooling heat-exchanger and its control method, it includes heat exchanger, for the secondary side water loop to external equipment cooling, for the primary side water loop to be cooled to secondary side water loop, and for being adjusted such that secondary side water loop leaving water temperature reaches the adjusting means of predetermined temperature to primary side water loop；Primary side water loop and secondary side water loop are connected with the both ends of heat exchanger respectively, and primary side water loop, secondary side water loop are connected with the adjusting means.The present invention adjusts the streamflow of primary side water loop inflow heat exchanger by adjusting bypass control valve (BCV), pump rotary speed is adjusted by adjusting frequency converter, the leaving water temperature of secondary side water loop is set to be maintained at predetermined temperature, so as to avoid influence of the various interference such as portfolio, environmental change to controlled parameter, and make controlled temperature stable in setting value, to ensure that liquid cooling system remains higher temperature control quality.
Description
Technical field
The present invention relates to the cold heat exchange structure technical field of liquid, more particularly to a kind of liquid cooling heat-exchanger and its control method.
Background technology
At present, liquid cooling system provides new solution as high heat flux dissipation from electronic devices using its efficient radiating efficiency
Scheme, it can efficiently solve big power consuming device heat dissipation problem so that equipment obtains more reliable operating temperature and lower
Energy consumption, and the multiple fields such as data center, server deploy apply.
However, existing temperature control technology, for liquid cooling system, added at heat exchanger both ends primary side water loop and
Secondary side water loop, and cooled by primary side water loop inflow heat exchanger for secondary side water loop, reduce secondary side water loop
Leaving water temperature, so as to be that external equipment cools cooling by secondary side water loop, it is that external equipment such as server etc. is carried out
During cooling, simple temperature feedback control system still is limited to, and is existed in liquid cooling system as server CPU service bearer amounts are dashed forward
So increase, can directly cause secondary side water loop water inlet pipe enter heat exchanger water temperature raise, or environment temperature rise and
Influence primary side water loop to raise to heat exchanger supply water temperature, can cause the leaving water temperature of secondary side water loop to raise.And show
Some liquid cooling systems can not be regulated and controled in time according to these interference variations to secondary side water loop to the supply water temperature of server,
The cold High Accuracy Constant Temperature cooling of liquid can not be realized.
Therefore, prior art has yet to be improved and developed.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, there is provided a kind of cold heat exchange dress of liquid
Put and its control method, it is intended to when liquid cooling system produce because of ectocine temperature change can not constant temperature cooling when, to the cold system of liquid
System regulation and control in time.
The technical proposal for solving the technical problem of the invention is as follows：
A kind of liquid cooling heat-exchanger, it includes heat exchanger, and it also includes being used for the secondary side water loop to external equipment cooling, uses
It is secondary in the primary side water loop to be cooled to secondary side water loop, and for being adjusted such that to primary side water loop
Side water loop leaving water temperature reaches the adjusting means of predetermined temperature；Primary side water loop and secondary side water loop respectively with heat exchanger
Both ends connection, primary side water loop, secondary side water loop are connected with the adjusting means.
The liquid cooling heat-exchanger, wherein, the adjusting means includes power supply, the controller being connected with the power supply, water
Volume control device, for detecting the first flowmeter of water loop water-carrying capacity in side time in heat exchanger, and second flowmeter；Institute
State water flow control device, the first flowmeter is arranged at the water inlet end of the primary side water loop and is located at the heat exchange
Outside device；The second flowmeter is arranged on the water side of the secondary side water loop and outside the heat exchanger；Positioned at described
The water side of primary side water loop outside heat exchanger is also connected with the water flow control device；Set in the primary side water loop
It is equipped with primary side temperature-detecting device；Secondary side temperature detection means is provided with the secondary side water loop；The water-carrying capacity
Control device, the first flowmeter, the second flowmeter, the primary side temperature-detecting device and the secondary side temperature
Detection means is connected with the controller.
The liquid cooling heat-exchanger, wherein, the water flow control device includes variable frequency pump device and bypass control valve (BCV)；
The bypass control valve (BCV) is between the variable frequency pump device and the heat exchanger；Primary side water outside the heat exchanger
The water side in loop is connected with the bypass control valve (BCV).
The liquid cooling heat-exchanger, wherein, the variable frequency pump device includes water pump and frequency converter；The water pump is arranged on
The water inlet end of the primary side water loop；One end of the frequency converter is connected with the controller, and the other end connects with the water pump
Connect.
The liquid cooling heat-exchanger, wherein, the bypass control valve (BCV) is triple valve.
A kind of control method based on liquid cooling heat-exchanger, it includes step：
A, the leaving water temperature T1 for the secondary side water loop that detection and acquisition are connected with heat exchanger, T1 and predetermined temperature T are compared
Compared with judging whether T1 is equal with predetermined temperature T；
B, when T1 and the predetermined temperature are unequal, the water-carrying capacity of the primary side water loop in heat exchanger when T1 reaches T is calculated
L’；
C, pair primary side water loop being connected with heat exchanger detects, and obtains the water-carrying capacity of primary side water loop in heat exchanger
Compared with L, by L and L ', according to L and L ' comparative result to being arranged on the water inlet end of primary side water loop and being located at heat exchanger
Outer water flow control device is adjusted, until the water-carrying capacity of primary side water loop is equal to L ' in heat exchanger.
The control method based on liquid cooling heat-exchanger, wherein, also include before the step A：
A00, detection simultaneously obtain the leaving water temperature signal of secondary side water loop, the water flow signal of secondary side water loop, heat exchanger
The water flow signal and outdoor wet-bulb temperature of interior primary side water loop；
A01, the water-carrying capacity according to primary side water loop in the leaving water temperature signal of the secondary side water loop of acquisition, heat exchanger
It is the predetermined temperature T that signal, outdoor wet-bulb temperature, which set the leaving water temperature of secondary side water loop,.
The control method based on liquid cooling heat-exchanger, wherein, the step C is specifically included：
C1, when L is less than L ', calculate that valve opening on the bypass control valve (BCV) towards heat exchanger side is maximum and the frequency conversion
The frequency of pumping plant for it is minimum permission frequency when heat exchanger in primary side water loop water-carrying capacity L ", by L " and L ' compared
Compared with, and the water flow control device is accordingly adjusted according to comparative result；
C2, when L ' is less than L, calculate that valve opening on the bypass control valve (BCV) towards heat exchanger side is maximum and the frequency conversion
The frequency of pumping plant for it is minimum permission frequency when heat exchanger in primary side water loop water-carrying capacity L ", by L " and L ' compared
Compared with, and the water flow control device is accordingly adjusted according to comparative result.
The control method based on liquid cooling heat-exchanger, wherein, the step C1 is specifically included:
C11, when L " is less than L ', obtain currently by it is described water inlet amount control device in variable frequency pump device water-carrying capacity, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water inlet amount control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, and calculate the valve opening on the bypass control valve (BCV) towards heat exchanger side it is maximum,
And when the water-carrying capacity of primary side water loop is L ' in heat exchanger the variable frequency pump device frequency, by the bypass control valve (BCV)
Maximum is adjusted to towards the valve opening of heat exchanger side, and the variable frequency pump device is accordingly adjusted；
C12, when L ' is less than L ", obtain currently by it is described water inlet amount control device in variable frequency pump device water-carrying capacity, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water inlet amount control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, and calculate and currently pass through the water of variable frequency pump device in the water flow control device
Under traffic conditions, towards the valve opening of heat exchanger side on the bypass control valve (BCV), and the bypass control valve (BCV) is carried out corresponding
Regulation.
The control method based on liquid cooling heat-exchanger, wherein, the step C2 is specifically included：
C21, when L " is less than L ', obtain currently by the water-carrying capacity of variable frequency pump device in the water flow control device, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water flow control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, calculate in presently described water flow control device and be connected with the variable frequency pump device
Bypass control valve (BCV) on towards under the premise of the valve opening of heat exchanger side, when the water-carrying capacity of primary side water loop is L ' in heat exchanger
The frequency of the variable frequency pump device, and the variable frequency pump device is accordingly adjusted；
C22, when L ' is less than L ", obtain currently by the water-carrying capacity of variable frequency pump device in the water flow control device, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water flow control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, the frequency for calculating the variable frequency pump device are adjusted to minimum permission frequency and changed
When the water-carrying capacity of primary side water loop is L ' in hot device, towards the valve opening of heat exchanger side on the bypass control valve (BCV), by institute
The frequency for stating variable frequency pump device is adjusted to minimum allowable frequency, and on the bypass control valve (BCV) towards the valve of heat exchanger side
Aperture is accordingly adjusted.
Beneficial effect：Compared with prior art, the present invention is detected by adjusting means to primary side water loop, and point
The water-carrying capacity L of primary side water loop and water temperature Huo Qu not be gone out when the secondary side water loop that be connected with heat exchanger in heat exchanger
Degree reaches water-carrying capacity L ' with primary side water loop in heat exchanger during predetermined temperature, and by L and L ' compared with, according to L and L '
Comparative result under temperature feedback adjustment effect, pass through the flowing water of by-pass governing valve regulation primary side water loop inflow heat exchanger
Amount, while pump rotary speed is adjusted by frequency converter, the leaving water temperature of secondary side water loop is maintained at predetermined temperature, so as to avoid
The various interference such as portfolio, environmental change make controlled temperature stable in setting value to being controlled the influence of parameter, to ensure liquid
Cooling system remains higher temperature control quality.
Brief description of the drawings
Fig. 1 is the structural representation of liquid cooling heat-exchanger of the present invention；
Fig. 2 is the flow chart of the control method based on liquid cooling heat-exchanger in the present invention；
Fig. 3 is the functional schematic block diagram of heretofore described liquid cooling heat-exchanger.
Embodiment
A kind of liquid cooling heat-exchanger provided by the invention and its control method, for make the purpose of the present invention, technical scheme and
Advantage is clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should be appreciated that herein
Described specific embodiment only to explain the present invention, is not intended to limit the present invention.
Below in conjunction with the accompanying drawings, by the description to embodiment, the content of the invention is described further.
The present invention provides a kind of liquid cooling heat-exchanger, and as shown in figures 1 and 3, it includes heat exchanger 1, for being set to outside
The cold secondary side water loop 2 of available, for the primary side water loop 3 to be cooled to secondary side water loop 2, and for one
Secondary side water loop 3 is adjusted such that the leaving water temperature of secondary side water loop 2 reaches the adjusting means of predetermined temperature；Primary side water returns
The both ends of road 3 and secondary side water loop 2 respectively with heat exchanger 1 are connected, primary side water loop 3, secondary side water loop 2 with it is described
Adjusting means connects.
Preferably, the liquid cooling heat-exchanger also includes timing means, the timing means is connected with the adjusting means,
So that the adjusting means was detected to the leaving water temperature of the secondary side water loop 2 and carried out corresponding every a scheduled time
Regulation；Further, in order to realize constant temperature cooling of the liquid cooling heat-exchanger to external equipment, the adjusting means can be with
The leaving water temperature of the secondary side water loop 2 is detected in real time and adjusted accordingly.
The liquid cooling heat-exchanger, wherein, the adjusting means includes power supply 4, the controller 5 being connected with the power supply 4,
Water flow control device, for detecting the first flowmeter 6 of water loop 3 water-carrying capacity in side time in heat exchanger 1, and second flow
Meter 7；The water flow control device, the first flowmeter 6 are arranged at the water inlet end 31 of primary side water loop and are located at institute
State outside heat exchanger 1；The second flowmeter 7 is arranged on the water side 22 of the secondary side water loop and is located at the heat exchanger 1
Outside；The water side 32 of primary side water loop outside the heat exchanger 1 is also connected with the water flow control device；Described one
Primary side temperature-detecting device is provided with secondary side water loop 3；Secondary side temperature detection is provided with the secondary side water loop 2
Device；The water flow control device, the first flowmeter 6, the second flowmeter 7, primary side temperature detection dress
Put and the secondary side temperature detection means is connected with the controller 5；The timing means is connected with the controller 5.
The adjusting means also includes man-machine interface 100, and the man-machine interface 100 is connected with the controller 5, and work people
Member can be adjusted by the man-machine interface 100 to the predetermined time interval of the timing means；The man-machine interface 100
The working condition of presently described liquid cooling heat-exchanger can also be shown.The liquid cooling heat-exchanger also includes host computer
200；The host computer 200 is connected with the controller 5.
Further, the primary side temperature-detecting device includes primary side inflow temperature sensor 33 and primary side water outlet
Temperature sensor 34；The primary side inflow temperature sensor 33 is arranged on the water inlet end 31 of the primary side water loop, and position
Between the first flowmeter 6 and the heat exchanger 1；The primary side leaving water temperature sensors 34 are arranged on the primary side
The water side of water loop；The primary side inflow temperature sensor 33 and the primary side leaving water temperature sensors 34 with it is described
Controller 5 connects.The secondary side temperature detection means includes secondary side inflow temperature sensor 23 and secondary side leaving water temperature
Sensor 24；The secondary side inflow temperature sensor 23 is arranged on the water inlet end 21 of the secondary side water loop；It is described secondary
Side leaving water temperature sensors 24 are arranged on the water side 22 of the secondary side water loop；The secondary side inflow temperature sensor 23
It is connected with the secondary side leaving water temperature sensors 24 with the controller 5.
The water flow control device includes variable frequency pump device and bypass control valve (BCV) 9；The bypass control valve (BCV) 9 is located at institute
State between variable frequency pump device and the heat exchanger 1；Primary side water side and the by-pass governing outside the heat exchanger 1
Valve 9 connects.The variable frequency pump device includes water pump 8 and frequency converter 81；The water pump 8 is arranged on the primary side water loop
Water inlet end 31；One end of the frequency converter 81 is connected with the controller 5, and the other end is connected with the water pump 8.The bypass control
Valve 9 processed is triple valve.
The leaving water temperature of secondary side water loop 2 is detected in the adjusting means and judges whether that needs are adjusted
And before adjust accordingly, the controller 5 controls secondary side leaving water temperature sensors 24 and described first-class
Gauge 6 starts, and the leaving water temperature of the secondary side water loop 2 is detected, and obtains the water outlet of the secondary side water loop 2
Temperature signal, the secondary side water loop 2 water flow signal and heat exchanger 1 in primary side water loop 3 water-carrying capacity letter
Number, controller 5 calculates current outdoor wet bulb humidity according to current outdoor ambient temperature and humidity size.The controller 5 is by acquisition
The water flow signal of primary side water loop 3 is brought into the leaving water temperature signal and the heat exchanger 1 of the secondary side water loop 2
In PID control variable, referring again to the normal working temperature scope of local outdoor annual wet bulb humidity and external equipment, according to
It is the predetermined temperature T that pid algorithm, which sets the leaving water temperature of secondary side water loop 2, so that the predetermined temperature T is more than described work as
The outer wet bulb humidity of cup and a default droop sum, and less than external equipment operating temperature higher limit and the default fixation
The difference of deviation, and bring the predetermined temperature T into PID set-points.
When reaching the scheduled time that the timing means is set, T1 compared with T, is judged T1 by the controller 5
It is whether equal with T, if equal, acted without regulation；If unequal, the controller 5 obtains current frequency converter 81
Frequency simultaneously calculates the streamflow L11 for currently flowing through the water pump 8 according to the frequency of current frequency converter 81；The controller 5 also obtains
Take valve opening L2 on presently described bypass control valve (BCV) 9 towards the side of heat exchanger 1, presently described primary side inflow temperature sensor
Inflow temperature T3, the presently described primary side leaving water temperature sensors 34 of the 33 primary side water loops 3 detected detect one
The water of primary side water loop 3 in the heat exchanger 1 that the leaving water temperature T4 of secondary side water loop 3, presently described first flowmeter 6 detect
The inflow temperature T2 for the secondary side water loop 2 that flow L, presently described secondary side inflow temperature sensor 23 detect, current institute
State the leaving water temperature T1 for the secondary side water loop 2 that secondary side leaving water temperature sensors 24 detect and presently described second
The streamflow Le for the secondary side water loop 2 that gauge 7 detects（The leaving water temperature of secondary side water loop 2 is adjusted in the present invention
During section, the streamflow of secondary side water loop 2 is not adjusted, i.e. Le is definite value）.Before the controller 5 can be according to heat exchange flow
Feedback-temperature feedback multiplex control system, flow temperature difference method heat exchange Computing Principle, heat exchange law of conservation of energy and pid control algorithm
Calculate and obtain when the leaving water temperature of secondary side water loop 2 is T, the water-carrying capacity L ' of primary side water loop 3 in heat exchanger 1, then
It is L* (T4-T3)=Le* (T2-T1) according to flow temperature difference method heat exchange Computing Principle and heat exchange law of conservation of energy, when T1 reaches T
When, L=L ', when T1 deviates T, T2 associates change with T1, it is necessary to adjust L values on the premise of Le is definite value（T3, T4 and L are closed
Connection change）, make T1 to the direction change close to T；Secondly, by L and L ' date comprision is carried out, using PID setting methods, meter
Calculate when the water-carrying capacity of primary side water loop 3 in heat exchanger 1 is L ', the frequency of water pump 8 and bypass control valve (BCV) 9 are towards heat exchanger
The valve opening of 1 side, and the frequency converter 81 and the bypass control valve (BCV) 9 are accordingly adjusted by the controller 5.Tool
Body regulation process is as follows：
When L is less than L ', the water-carrying capacity of primary side water loop 3 is on the low side in heat exchanger 1, and the prioritizing selection of controller 5 adjusts L2
Greatly.The controller 5 calculates the valve opening on the bypass control valve (BCV) 9 towards the side of heat exchanger 1 and reached according to pid control algorithm
When frequency to maximum and described variable frequency pump 8 is minimum permission frequency, the water-carrying capacity of primary side water loop 3 in heat exchanger 1
Compared with L ", by L " and L '（When valve opening on the bypass control valve (BCV) 9 towards the side of heat exchanger 1 reaches maximum, by institute
The flowing water for stating water pump 8 no longer flows to the backwater end of primary side water loop 3, but all by direction on the bypass control valve (BCV) 9
The valve inflow heat exchanger 1 of the side of heat exchanger 1）：
When L " is less than L ', even if the valve opening on the bypass control valve (BCV) 9 towards the side of heat exchanger 1 is transferred into maximum, heat exchange
In device 1 primary side enter water loop water-carrying capacity it is still on the low side, now need that the frequency of the water pump 8 is adjusted so that warp
Cross the streamflow increase of the water pump 8.The controller 5 obtains currently to be filled by variable frequency pump in the water inlet amount control device
Direction is changed on bypass control valve (BCV) be connected in the water-carrying capacity put, presently described water inlet amount control device with the variable frequency pump device
The valve opening of hot device side, the inflow temperature T2 of current secondary side water loop 2, primary side water loop 1 enters in current heat exchanger
The leaving water temperature T4 of primary side water loop, passes through heat exchange flow feedforward-temperature feedback in coolant-temperature gage T3 and current heat exchanger
In multiplex control system closed loop transfer function, relation and to disturb full remuneration demand, and combine attenuation curve method and experience examination gather
Method is adjusted to pid parameter, determines gain coefficient P values, integral action value and differential action value respectively, then according to PID certainly
Dynamic regulation result, calculate when the valve opening on the bypass control valve (BCV) 9 towards the side of heat exchanger 1 is transferred to maximum and heat exchanger 1
When the water-carrying capacity of interior primary side water loop 3 is L ', the frequency size of the water pump 8, and convert it into analog electric signal shape
Formula, export to frequency converter 81, meanwhile, the electric signal that frequency converter 81 will receive changes into frequency signal, accordingly adjusts the water pump
8 running speed, and the valve opening on the bypass control valve (BCV) 9 towards the side of heat exchanger 1 is transferred to maximum, until heat exchanger 1
The water-carrying capacity of interior primary side water loop 3 is equal to L '.
When L ' is less than L ", it is only necessary to adjust on the bypass control valve (BCV) 9 towards the valve opening of the side of heat exchanger 1.
The controller 5 is obtained currently by the water-carrying capacity of variable frequency pump device, presently described water inlet in the water inlet amount control device
Towards the valve opening of heat exchanger side, when the first two on the bypass control valve (BCV) being connected in amount control device with the variable frequency pump device
In the inflow temperature T2 of secondary side water loop 2, current heat exchanger in the inflow temperature T3 of primary side water loop 1 and current heat exchanger
The leaving water temperature T4 of primary side water loop, then passed by closed loop in heat exchange flow feedforward-temperature feedback multiplex control system
Delivery function relation and to disturbing full remuneration demand, and combine attenuation curve method and experience trial and error procedure and pid parameter is adjusted,
Gain coefficient P values, integral action value and differential action value are determined respectively, and result is then automatically adjusted according to PID, calculated current
On the premise of water-carrying capacity feelings by variable frequency pump device in the water flow control device, the required bypass control valve (BCV)
Towards the valve opening of the side of heat exchanger 1 on 9, and the bypass control valve (BCV) 9 is accordingly adjusted, until in heat exchanger 1 once
The water-carrying capacity of side water loop 3 is equal to L '.
When L ' is less than L, the water-carrying capacity of primary side water loop 3 is on the high side in heat exchanger 1, and the controller 5 preferentially adjusts institute
The running frequency of water pump 8 is stated, without adjusting on the bypass control valve (BCV) 9 towards the valve opening of the side of heat exchanger 1.The controller
5, according to pid control algorithm, calculate the valve opening on the bypass control valve (BCV) 9 towards the side of heat exchanger 1 and reach maximum and described
When the frequency of variable frequency pump 8 is minimum permission frequency, the water-carrying capacity L " of primary side water loop 3 in heat exchanger 1, by L " and L ' is carried out
Compare：
When L " is less than L ', the controller 5 is obtained currently by the water of variable frequency pump device in the water flow control device
Towards heat exchanger side on the bypass control valve (BCV) being connected in flow, presently described water flow control device with the variable frequency pump device
Valve opening, the inflow temperature T2 of current secondary side water loop, the inflow temperature T3 of primary side water loop in current heat exchanger,
And in current heat exchanger primary side water loop leaving water temperature T4, pass through heat exchange flow feedforward-temperature feedback complex controll system
Closed loop transfer function, relation and to disturbing full remuneration demand in system, and combine attenuation curve method and experience trial and error procedure and PID is joined
Number is adjusted, and is determined gain coefficient P values, integral action value and differential action value respectively, is then automatically adjusted knot according to PID
Fruit, calculate on the bypass control valve (BCV) being connected in presently described water flow control device with the variable frequency pump device towards heat exchange
On the premise of the valve opening of device side, the frequency size of the water pump 8 when the water-carrying capacity of primary side water loop is L ' in heat exchanger,
And analog electric signal form is converted it into, export to frequency converter 81, meanwhile, the electric signal that frequency converter 81 will receive, turn
Into frequency signal, the running speed of water pump 8 is accordingly adjusted, until the water-carrying capacity of primary side water loop 3 is equal in heat exchanger 1
L’。
When L ' is less than L ", the controller 5 is obtained currently by variable frequency pump device in the water flow control device
Water-carrying capacity, on the bypass control valve (BCV) that is connected with the variable frequency pump device in presently described water flow control device towards heat exchange
The valve opening of device side, the inflow temperature T2 of current secondary side water loop, primary side water loop enters water temperature in current heat exchanger
The leaving water temperature T4 of primary side water loop in T3 and current heat exchanger is spent, it is compound by heat exchange flow feedforward-temperature feedback
In control system closed loop transfer function, relation and to disturb full remuneration demand, and combine attenuation curve method and experience trial and error procedure pair
Pid parameter is adjusted, and is determined gain coefficient P values, integral action value and differential action value respectively, is then adjusted automatically according to PID
Nodule fruit, calculate when the water pump 8 is using the water-carrying capacity of primary side water loop 3 in minimum permission frequency operation and heat exchanger 1 as L '
Towards the valve opening of the side of heat exchanger 1 on Shi Suoshu bypass control valve (BCV)s 9, on the bypass control valve (BCV) 9 towards the side of heat exchanger 1
Valve opening is accordingly adjusted, and the running frequency of the water pump 8 is adjusted into minimum permission frequency, until in heat exchanger 1
The water-carrying capacity of primary side water loop 3 is equal to L '.
The present invention also provides a kind of control method based on liquid cooling heat-exchanger, as shown in Fig. 2 it includes step：
S100, detection and the leaving water temperature T1 for obtaining the secondary side water loop being connected with heat exchanger, T1 and predetermined temperature T is carried out
Compare, judge whether T1 is equal with predetermined temperature T；
S200, when T1 and the predetermined temperature are unequal, calculate the current of the primary side water loop in heat exchanger when T1 reaches T
Measure L '；
S300, pair primary side water loop being connected with heat exchanger detect, and obtain the water of primary side water loop in heat exchanger
Compared with flow L, by L and L ', according to L and L ' comparative result to being arranged on the water inlet end of primary side water loop and positioned at changing
Water flow control device outside hot device is adjusted, until the water-carrying capacity of primary side water loop is equal to L ' in heat exchanger.
Also include before the step S100：
S10, detection and obtain the leaving water temperature signal of secondary side water loop, in heat exchanger primary side water loop water flow signal
And outdoor wet-bulb temperature；
S11, the water-carrying capacity according to primary side water loop in the leaving water temperature signal of the secondary side water loop of acquisition, heat exchanger
It is the predetermined temperature T that signal, outdoor wet-bulb temperature, which set the leaving water temperature of secondary side water loop,.
The step S300 is specifically included：
S30, when L is less than L ', calculate that valve opening on the bypass control valve (BCV) towards heat exchanger side is maximum and the frequency conversion
The frequency of pumping plant for it is minimum permission frequency when heat exchanger in primary side water loop water-carrying capacity L ", by L " and L ' compared
Compared with, and the water flow control device is adjusted according to comparative result；
S31, when L ' is less than L, calculate that valve opening on the bypass control valve (BCV) towards heat exchanger side is maximum and the frequency conversion
The frequency of pumping plant for it is minimum permission frequency when heat exchanger in primary side water loop water-carrying capacity L ", by L " and L ' compared
Compared with, and the water flow control device is adjusted according to comparative result.
The step S30 is specifically included:
S301, when L " is less than L ', obtain currently by it is described water inlet amount control device in variable frequency pump device water-carrying capacity, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water inlet amount control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, and calculate the valve opening on the bypass control valve (BCV) towards heat exchanger side it is maximum,
And when the water-carrying capacity of primary side water loop is L ' in heat exchanger the variable frequency pump device frequency, by the bypass control valve (BCV)
Maximum is adjusted to towards the valve opening of heat exchanger side, and the variable frequency pump device is accordingly adjusted；
S302, when L ' is less than L ", obtain currently by it is described water inlet amount control device in variable frequency pump device water-carrying capacity, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water inlet amount control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, and calculate and currently pass through the water of variable frequency pump device in the water flow control device
Under traffic conditions, towards the valve opening of heat exchanger side on the bypass control valve (BCV), and the bypass control valve (BCV) is carried out corresponding
Regulation.
The step S31 is specifically included：
S311, when L " is less than L ', obtain currently by the water-carrying capacity of variable frequency pump device in the water flow control device, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water flow control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, calculate in presently described water flow control device and be connected with the variable frequency pump device
Bypass control valve (BCV) on towards under the premise of the valve opening of heat exchanger side, when the water-carrying capacity of primary side water loop is L ' in heat exchanger
The frequency of the variable frequency pump device, and the variable frequency pump device is accordingly adjusted；
S312, when L ' is less than L ", obtain currently by the water-carrying capacity of variable frequency pump device in the water flow control device, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water flow control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, the frequency for calculating the variable frequency pump device are adjusted to minimum permission frequency and changed
When the water-carrying capacity of primary side water loop is L ' in hot device, towards the valve opening of heat exchanger side on the bypass control valve (BCV), by institute
The frequency for stating variable frequency pump device is adjusted to minimum allowable frequency, and on the bypass control valve (BCV) towards the valve of heat exchanger side
Aperture is accordingly adjusted.
In summary, provided by the present invention a kind of liquid cooling heat-exchanger and its control method, by adjusting means to one
Secondary side water loop is detected, and is obtained the water-carrying capacity L of primary side water loop in heat exchanger respectively and ought be connected with heat exchanger
The leaving water temperature of secondary side water loop reach water-carrying capacity L ' with primary side water loop in heat exchanger during predetermined temperature, and by L
Compared with L ', according to L and L ' comparative result under temperature feedback adjustment effect, pass through by-pass governing valve regulation primary side
The streamflow of water loop inflow heat exchanger, while pump rotary speed is adjusted by frequency converter, make the leaving water temperature of secondary side water loop
Predetermined temperature is maintained at, so as to avoid the various interference such as portfolio, environmental change to being controlled the influence of parameter, and makes controlled temperature
Stabilization is in setting value, to ensure that liquid cooling system remains higher temperature control quality.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (10)
1. a kind of liquid cooling heat-exchanger, it includes heat exchanger, it is characterised in that it also includes being used for the two of external equipment cooling
Secondary side water loop, for the primary side water loop to be cooled to secondary side water loop, and for entering to primary side water loop
Row regulation is so that secondary side water loop leaving water temperature reaches the adjusting means of predetermined temperature；Primary side water loop and secondary side water return
Road is connected with the both ends of heat exchanger respectively, and primary side water loop, secondary side water loop are connected with the adjusting means.
2. liquid cooling heat-exchanger according to claim 1, it is characterised in that the adjusting means includes power supply, with the electricity
The controller of source connection, water flow control device, for detecting the first flowmeter of water loop water-carrying capacity in side time in heat exchanger,
And second flowmeter；The water flow control device, the first flowmeter are arranged at entering for the primary side water loop
Water end (W.E.) is simultaneously located at outside the heat exchanger；The second flowmeter is arranged on the water side of the secondary side water loop and positioned at described
Outside heat exchanger；The water side of primary side water loop outside the heat exchanger is also connected with the water flow control device；Institute
State and primary side temperature-detecting device is provided with primary side water loop；Secondary side temperature inspection is provided with the secondary side water loop
Survey device；The water flow control device, the first flowmeter, the second flowmeter, primary side temperature detection dress
Put and the secondary side temperature detection means is connected with the controller.
3. liquid cooling heat-exchanger according to claim 2, it is characterised in that the water flow control device includes variable frequency pump
Device and bypass control valve (BCV)；The bypass control valve (BCV) is between the variable frequency pump device and the heat exchanger；Positioned at described
The water side of primary side water loop outside heat exchanger is connected with the bypass control valve (BCV).
4. liquid cooling heat-exchanger according to claim 3, it is characterised in that the variable frequency pump device includes water pump and frequency conversion
Device；The water pump is arranged on the water inlet end of the primary side water loop；One end of the frequency converter is connected with the controller, separately
One end is connected with the water pump.
5. liquid cooling heat-exchanger according to claim 3, it is characterised in that the bypass control valve (BCV) is triple valve.
6. a kind of control method based on liquid cooling heat-exchanger, it is characterised in that it includes step：
A, the leaving water temperature T1 for the secondary side water loop that detection and acquisition are currently connected with heat exchanger, T1 and predetermined temperature T are entered
Row compares, and judges whether T1 is equal with predetermined temperature T；
B, when T1 and the predetermined temperature are unequal, the water-carrying capacity of the primary side water loop in heat exchanger when T1 reaches T is calculated
L’；
C, pair primary side water loop being connected with heat exchanger detects, and obtains the water-carrying capacity of primary side water loop in heat exchanger
Compared with L, by L and L ', according to L and L ' comparative result to being arranged on the water inlet end of primary side water loop and being located at heat exchanger
Outer water flow control device is adjusted, until the water-carrying capacity of primary side water loop is equal to L ' in heat exchanger.
7. liquid cooling heat-exchanger according to claim 6, it is characterised in that also include before the step A：
A1, detection simultaneously obtain the leaving water temperature signal of secondary side water loop, the water flow signal of secondary side water loop, in heat exchanger
The water flow signal of primary side water loop and outdoor wet-bulb temperature；
A2, the water-carrying capacity according to primary side water loop in the leaving water temperature signal of the secondary side water loop of acquisition, heat exchanger
It is the predetermined temperature T that signal, outdoor wet-bulb temperature, which set the leaving water temperature of secondary side water loop,.
8. liquid cooling heat-exchanger according to claim 6, it is characterised in that the step C is specifically included：
C1, when L is less than L ', calculate that valve opening on the bypass control valve (BCV) towards heat exchanger side is maximum and the frequency conversion
The frequency of pumping plant for it is minimum permission frequency when heat exchanger in primary side water loop water-carrying capacity L ", by L " and L ' compared
Compared with, and the water flow control device is accordingly adjusted according to comparative result；
C2, when L ' is less than L, calculate that valve opening on the bypass control valve (BCV) towards heat exchanger side is maximum and the frequency conversion
The frequency of pumping plant for it is minimum permission frequency when heat exchanger in primary side water loop water-carrying capacity L ", by L " and L ' compared
Compared with, and the water flow control device is accordingly adjusted according to comparative result.
9. liquid cooling heat-exchanger according to claim 8, it is characterised in that the step C1 is specifically included:
C11, when L " is less than L ', obtain currently by it is described water inlet amount control device in variable frequency pump device water-carrying capacity, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water inlet amount control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, and calculate the valve opening on the bypass control valve (BCV) towards heat exchanger side it is maximum,
And when the water-carrying capacity of primary side water loop is L ' in heat exchanger the variable frequency pump device frequency, by the bypass control valve (BCV)
Maximum is adjusted to towards the valve opening of heat exchanger side, and the variable frequency pump device is accordingly adjusted；
C12, when L ' is less than L ", obtain currently by it is described water inlet amount control device in variable frequency pump device water-carrying capacity, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water inlet amount control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, and calculate and currently pass through the water of variable frequency pump device in the water flow control device
Under traffic conditions, towards the valve opening of heat exchanger side on the bypass control valve (BCV), and the bypass control valve (BCV) is carried out corresponding
Regulation.
10. liquid cooling heat-exchanger according to claim 8, it is characterised in that the step C2 is specifically included：
C21, when L " is less than L ', obtain currently by the water-carrying capacity of variable frequency pump device in the water flow control device, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water flow control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, calculate in presently described water flow control device and be connected with the variable frequency pump device
Bypass control valve (BCV) on towards under the premise of the valve opening of heat exchanger side, when the water-carrying capacity of primary side water loop is L ' in heat exchanger
The frequency of the variable frequency pump device, and the variable frequency pump device is accordingly adjusted；
C22, when L ' is less than L ", obtain currently by the water-carrying capacity of variable frequency pump device in the water flow control device, when
Towards the valve of heat exchanger side on the bypass control valve (BCV) being connected in the preceding water flow control device with the variable frequency pump device
Aperture, the inflow temperature of current secondary side water loop, the inflow temperature of primary side water loop and current heat exchange in current heat exchanger
The leaving water temperature of primary side water loop in device, the frequency for calculating the variable frequency pump device are adjusted to minimum permission frequency and changed
When the water-carrying capacity of primary side water loop is L ' in hot device, towards the valve opening of heat exchanger side on the bypass control valve (BCV), by institute
The frequency for stating variable frequency pump device is adjusted to minimum allowable frequency, and on the bypass control valve (BCV) towards the valve of heat exchanger side
Aperture is accordingly adjusted.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081537A (en) * | 2019-03-20 | 2019-08-02 | 深圳市成大机电科技有限公司 | A kind of control method of ice-melt cooling supply |
| CN110190039A (en) * | 2018-11-30 | 2019-08-30 | 中航光电科技股份有限公司 | Water water heat exchange liquid cooling system and its liquid cooling source feed flow temperature, flow control methods |
| CN111642108A (en) * | 2020-05-30 | 2020-09-08 | 华为技术有限公司 | Liquid cooling module, control method thereof and liquid cooling system for data center |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009231529A (en) * | 2008-03-24 | 2009-10-08 | Hitachi Plant Technologies Ltd | Cooling system for electronic device |
| CN104252187A (en) * | 2014-09-19 | 2014-12-31 | 广东申菱空调设备有限公司 | Control method for heat dissipation system of secondary water loop server cabinet |
| US20160353614A1 (en) * | 2015-06-01 | 2016-12-01 | Fujitsu Limited | Cooling apparatus, cooling method, and data processing system |
| CN106647987A (en) * | 2016-11-15 | 2017-05-10 | 曙光节能技术（北京）股份有限公司 | Cooling system |
| CN106686944A (en) * | 2016-12-01 | 2017-05-17 | 无锡市优利康电气有限公司 | Liquid cooling frequency converter heat dissipation system |
| CN106766365A (en) * | 2016-11-28 | 2017-05-31 | 广东美的暖通设备有限公司 | Frequency conversion air-cooled heat pump water chiller-heater system and its control method and air-conditioning |
| CN207252118U (en) * | 2017-08-08 | 2018-04-17 | 广东申菱环境系统股份有限公司 | A kind of liquid cooling heat-exchanger |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434822C (en) * | 2006-08-16 | 2008-11-19 | 广州市远正智能科技有限公司 | Cold volume governing system for regionally concentrated cold supply second-stage cold volume exchange station |
| CN105020822B (en) * | 2015-07-31 | 2017-10-20 | 新智能源系统控制有限责任公司 | Suitable for the change differential pressure control system of air-conditioning Variable flow system |
| CN106168404A (en) * | 2016-07-13 | 2016-11-30 | 昆山台佳机电有限公司 | The secondary pump air-conditioner water system flow-changing control method of temperature difference correction and device |
-
2017
- 2017-08-08 CN CN201710670985.2A patent/CN107466187B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009231529A (en) * | 2008-03-24 | 2009-10-08 | Hitachi Plant Technologies Ltd | Cooling system for electronic device |
| CN104252187A (en) * | 2014-09-19 | 2014-12-31 | 广东申菱空调设备有限公司 | Control method for heat dissipation system of secondary water loop server cabinet |
| US20160353614A1 (en) * | 2015-06-01 | 2016-12-01 | Fujitsu Limited | Cooling apparatus, cooling method, and data processing system |
| CN106647987A (en) * | 2016-11-15 | 2017-05-10 | 曙光节能技术（北京）股份有限公司 | Cooling system |
| CN106766365A (en) * | 2016-11-28 | 2017-05-31 | 广东美的暖通设备有限公司 | Frequency conversion air-cooled heat pump water chiller-heater system and its control method and air-conditioning |
| CN106686944A (en) * | 2016-12-01 | 2017-05-17 | 无锡市优利康电气有限公司 | Liquid cooling frequency converter heat dissipation system |
| CN207252118U (en) * | 2017-08-08 | 2018-04-17 | 广东申菱环境系统股份有限公司 | A kind of liquid cooling heat-exchanger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190039A (en) * | 2018-11-30 | 2019-08-30 | 中航光电科技股份有限公司 | Water water heat exchange liquid cooling system and its liquid cooling source feed flow temperature, flow control methods |
| CN110081537A (en) * | 2019-03-20 | 2019-08-02 | 深圳市成大机电科技有限公司 | A kind of control method of ice-melt cooling supply |
| CN111642108A (en) * | 2020-05-30 | 2020-09-08 | 华为技术有限公司 | Liquid cooling module, control method thereof and liquid cooling system for data center |
| CN111642108B (en) * | 2020-05-30 | 2021-07-16 | 华为技术有限公司 | Liquid cooling module, control method thereof and liquid cooling system for data center |
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|---|---|
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