CN109731624A - A kind of scientific experiment cupboards high-precision twin-stage temperature-controlling system based on thermoelectric heat pump - Google Patents
A kind of scientific experiment cupboards high-precision twin-stage temperature-controlling system based on thermoelectric heat pump Download PDFInfo
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- CN109731624A CN109731624A CN201910064728.3A CN201910064728A CN109731624A CN 109731624 A CN109731624 A CN 109731624A CN 201910064728 A CN201910064728 A CN 201910064728A CN 109731624 A CN109731624 A CN 109731624A
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Abstract
A kind of scientific experiment cupboards high-precision twin-stage temperature-controlling system based on thermoelectric heat pump, wherein the cooling branch circuit parallel connection containing cold plate is at cooling network；The water supply of cooling network and water return pipeline pass through thermoelectric heat pump progress heat exchange；The cold and hot end of thermoelectric heat pump has bypass branch respectively；The secondary liquid circulatory system carries out heat with the thermal control bus outside cabinet by Intermediate Heat Exchanger and exchanges.The present invention regulates and controls cooling Web portal Temperature of Working in parallel by thermoelectric heat pump, and the solenoid valve by adjusting each cooling branch meets local radiating requirements；The cooling Temperature of Working of cooling Web portal in parallel is adjusted by semiconductor heat pump assembly, be conducive to eliminate temperature of incoming flow fluctuation to negative effect caused by in-cabinet temperature control, lower temperature control needs can be met in the case where temperature of incoming flow is higher, and avoid condensing in the case where temperature of incoming flow is relatively low, improve the validity and accuracy of scientific experiment cupboards temperature control.
Description
Technical field
The invention belongs to spacecraft thermal control application fields, disclose a kind of suitable for the control of spacecraft scientific experiment cupboards temperature
System schema.
Background technique
Spacecraft Active thermal control system mainly executes heat collection, heat by the circulation of fluid circuit that mechanical pump provides power
The function that amount transmitting and heat dissipate.Scientific experiment cupboards, which are on spacecraft, to be multidisciplinary, multi-field scientific research instrument and sets
It is standby that the device of resource interface is provided.Part and terminal of the scientific experiment cupboards temperature-controlling system as spacecraft Active thermal control system, it
Task be mainly to collect load waste heat by being arranged in each local cold plate, be transferred to outside cabinet and final dissipation be to space
It is heat sink, environment temperature needed for guaranteeing different experiments with this, while reducing the influence that load radiates to spacecraft structure and environment.
Therefore effective development and aircraft whole duty cycle of the design of scientific experiment cupboards temperature-controlling system to scientific experiment in spacecraft
Under safe flight it is significant.
By taking international space station as an example, inside space station Active thermal control system be divided into mild two circuits of low temperature.It is scientific real
Cabinet is tested there are many thermal control scheme: (1) space station heat control system while providing middle warm water and water at low temperature for experiment cabinet；(2) space station
Heat control system is only warm water or water at low temperature during experiment cabinet provides；(3) space station heat control system provides middle warm water or low for experiment cabinet
Warm water, the second level water loop by pumping driving in Intermediate Heat Exchanger and cabinet carry out heat and exchange.Experiment cabinet enters under these schemes
Mouth cooling water temperature depends directly on the temperature of incoming flow of space station thermal control bus, does not carry out independent regulation.Therefore entrance is cold
But the fluctuation of water temperature brings difficulty to the accurate temperature controlling of experiment cabinet.And effective reality is difficult in the case where temperature of incoming flow is higher
The control target of existing lower temperature.
Therefore, it designs one kind and is relatively independent of spacecraft thermal control system, the adjustable science of the cooling Temperature of Working of entrance is real
Cabinet temperature control scheme is tested, for realizing that scientific experiment cupboards high accuracy temperature control and lower temperature control target, guarantees that spacecraft is flat
Effective development of scientific experiment in platform, ensures that the safe operation of spacecraft is significant.
Summary of the invention
According to an aspect of the invention, there is provided a kind of scientific experiment cupboards high-precision twin-stage temperature-controlling system, feature exist
In including:
Intermediate Heat Exchanger, the Intermediate Heat Exchanger are placed in except experiment cabinet；
The secondary liquid circulatory system comprising circulating pump, cold end triple valve, semiconductor heat pump assembly, hot end triple valve, side
Road solenoid valve, shut-off valve, cooling network, and be placed within experiment cabinet,
Wherein:
The cooling network includes multiple cooling branches in parallel, and each cooling branch includes cold plate, the adjusting of branch electromagnetism
Valve, temperature sensor and flowmeter,
The water supply pipe and water return pipeline of the cooling network carry out heat exchange by the semiconductor heat pump assembly；
Bypass branch is equipped between the semiconductor heat pump assembly and circulating pump；
The cold end triple valve connects the water supply pipe, the cold end of semiconductor heat pump assembly and a cold end bypass；
The hot end triple valve connects the water return pipeline, the hot end of semiconductor heat pump assembly and a hot end bypass；
Spacecraft thermal control bus outside the secondary liquid circulatory system and experiment cabinet carries out heat by Intermediate Heat Exchanger
Amount exchange,
The bypass branch is equipped with a bypass solenoid valve and differential pressure pickup.
A further aspect according to the present invention is provided based on above-mentioned scientific experiment cupboards high-precision twin-stage temperature control
The scientific experiment cupboards high-precision twin-stage temperature control method of system.
Detailed description of the invention
Fig. 1 is a kind of scientific experiment cupboards high-precision twin-stage based on thermoelectric heat pump according to an embodiment of the invention
The structural schematic diagram of temperature-controlling system.
Fig. 2 is a kind of scientific experiment cupboards high-precision twin-stage based on thermoelectric heat pump according to an embodiment of the invention
The structural schematic diagram of semiconductor heat pump assembly in temperature-controlling system.
Fig. 3 is a kind of scientific experiment cupboards high-precision twin-stage based on thermoelectric heat pump according to an embodiment of the invention
The control logic figure of temperature-controlling system.
Fig. 4 shows a kind of scientific experiment cupboards high-precision based on thermoelectric heat pump according to an embodiment of the invention
Three kinds of operating modes of twin-stage temperature-controlling system.
Appended drawing reference:
1- Intermediate Heat Exchanger；The 2- secondary liquid circulatory system；3- circulating pump；4- bypass branch；5- cold end triple valve；6- half
Conductor heat pump components；The bypass of 7- cold end；8- cools down branch；9- cold plate；10- branch solenoid valve；The hot end 11- triple valve；12-
Hot end bypass；；13- bypasses solenoid valve；14- shut-off valve；15- differential pressure pickup；16- temperature sensor；17- flowmeter；
18- experiment cabinet；19- spacecraft thermal control bus.
601- semiconductor heat pump assembly cold end (internally finned tube)；602- semiconductor heat pump assembly hot end (internally finned tube)；
603- thermoelectric cooler；604- inner core；The corrugated inner fin of 605-；606-P-N ties thermocouple arrays.
20- bypass branch valve positioner；21- thermoelectric cooler controller；22- cools down branch road valve controller；23- tri-
Port valve controller；24-FPGA controller；Temperature sensor before 1601- water supply pipe semiconductor heat pump assembly；1602- water supplying pipe
(the cooling Web portal of parallel connection) temperature sensor after the semiconductor heat pump assembly of road；The cooling branch cold plate outlet temperature sensing of 1603-
Device.
Specific embodiment
The purpose of the present invention is being directed in space science experiment cabinet Design of Temperature Control, the cooling Temperature of Working of experiment cabinet entrance
The problem of fluctuation or temperature drift, propose a kind of scientific experiment cupboards high-precision twin-stage temperature-controlling system side based on thermoelectric heat pump
Case avoids the cooling Temperature of Working of entrance so that the cooling Temperature of Working of experiment cabinet entrance can be adjusted independently of spacecraft thermal control system
Fluctuation or temperature drift improve the temperature controlled validity of experiment cabinet and accuracy to the temperature controlled influence of experiment cabinet.
Technical scheme is as follows:
A kind of scientific experiment cupboards high-precision twin-stage temperature-controlling system based on thermoelectric heat pump contains Intermediate Heat Exchanger, circulation
Pump, semiconductor heat pump assembly, several cold plates, triple valve, solenoid valve, shut-off valve, differential pressure pickup, temperature sensor and stream
Meter；The circulating pump, semiconductor heat pump assembly, triple valve, solenoid valve, cold plate, shut-off valve, differential pressure pickup, temperature
Sensor and flowmeter form secondary liquid recirculating network, it is characterised in that: the secondary liquid recirculating network and external space flight
Device heat control system carries out heat exchange by Intermediate Heat Exchanger；The semiconductor heat pump assembly is by the heat based on P-N junction thermocouple
Electric refrigerator and internally finned tube composition；There is the bypass branch with solenoid valve between the circulating pump, semiconductor heat pump assembly
Road；The multiple cooling branch has a cold plate and an electromagnetism tune using the cooling network of structure composition in parallel, each cooling branch
Save valve.The water supply of the cooling network in parallel and water return pipeline are exchanged by the thermoelectric heat pump component rows heat；It is described cold
Hold triple valve connection water supply pipe, semiconductor heat pump assembly cold end and cold end bypass；The hot end triple valve connection water return pipeline,
Semiconductor heat pump assembly hot end and hot end bypass.
Preferably, the internally finned tube uses the waveform internally finned tube with inner core, to improve heat transfer efficiency.
The scientific experiment cupboards high-precision twin-stage temperature-controlling system based on thermoelectric heat pump is by four control objects to being
System is regulated and controled, and holding circulating pump first is run under constant rotational speed, makes cooling net in parallel by adjusting bypass branch solenoid valve
The pressure difference that network supplies water between water return pipeline is setting value, on the other hand controls bosher's mass flow by regulating three-way valve and is partly led
Body heat pump assembly cold end/cold end bypass, hot end/hot end bypass path and flow, and the function by adjusting thermoelectric heat pump
Rate, which is adjusted from the refrigerating capacity that cold end is pumped to hot end, makes cooling Web portal temperature setting value in parallel, each cold finally by adjusting
But the flow that the electromagnetism valve regulation of branch flows through respective branch makes cold plate import and export working medium temperature difference setting value.
At least there are three types of operating modes for the scientific experiment cupboards high-precision twin-stage temperature-controlling system based on thermoelectric heat pump: false
If cooling working medium temperature range needed for scientific experiment cupboards is Tc-min~Tc-max, 1. as entrance Temperature of Working T1601>Tc-max, respectively
Regulating three-way valve, which makes to supply water, fully enters thermoelectric heat pump cold end pipeline, and return water fully enters thermoelectric heat pump hot end pipeline, adjusts
The power of thermoelectric cooler makes T in section semiconductor heat pump assembly1602∈[Tc-min,Tc-max]；2. working as T1601<Tc-min, adjust respectively
Triple valve, which makes to supply water, fully enters thermoelectric heat pump cold end pipeline, and return water part enters thermoelectric heat pump hot end pipeline, thermoelectricity system
Cooler does not work, and makes T1602∈[Tc-min,Tc-max], semiconductor heat pump assembly is equivalent to a Recuperative heat exchanger at this time, prevents
Low chilled liquid temperature makes to condense in experiment cabinet；3. working as T1601∈[Tc-min,Tc-max], regulating three-way valve makes to supply water respectively
Cold end bypass is fully entered, return water fully enters hot end bypass, and thermoelectric cooler does not work.
Compared with prior art, the invention has the advantages and beneficial effects that: 1. by semiconductor heat pump assembly realize to reality
The adjustment for testing the cooling Temperature of Working of cabinet entrance, avoids the fluctuation of spacecraft thermal control system temperature of incoming flow to experiment cabinet accurate temperature controlling
Influence, meet the demand for control of lower temperature under the conditions of higher temperature of incoming flow, while lower temperature of incoming flow condition being avoided to issue
The solidifying situation of raw food；2. keep circulating pump to work with constant rotational speed, it is stable in parallel cold by adjusting bypass branch solenoid valve
But the pressure difference of network water supply and water return pipeline is conducive to keep cooling bypass flow and solenoid valve valve opening approximation line
Property, the stability that enhancing bypass flow is adjusted, while advantageously reducing the loss of pump；3. the design of bypass branch structure is conducive to
Flow is distributed according to radiating requirements, to reduce the energy consumption of semiconductor heat pump assembly；4. semiconductor heat pump assembly uses band inner core
Waveform internally finned tube, enhance the heat exchange of hot and cold side.
As shown in figure 3, the signal of differential pressure pickup 15 inputs bypass branch valve positioner 20, output signal control bypass
The bypass solenoid valve 13 of branch road；The signal of temperature sensor 1601 and 1602 inputs threeway valve control 23 and heat simultaneously
Electric refrigerator controller 21, output signal control the thermoelectric cooler in triple valve 5 and 11 and semiconductor heat pump assembly 6 respectively
603；The signal of temperature sensor 1602 and 1603 inputs cooling branch road valve controller 22, and output signal controls cooling branch road
Branch solenoid valve 10.Bypass branch valve positioner 20, thermoelectric cooler controller 21, cooling branch road valve controller
22 and threeway valve control 23 be integrated in FPGA controller 24.
Fig. 4 is showing a kind of scientific experiment cupboards high-precision twin-stage temperature control system based on thermoelectric heat pump according to the present invention
Three kinds of operating modes of system.It is assumed that cooling Web portal Temperature of Working needed for scientific experiment cupboards is Tc-min~
Tc-max, for temperature of incoming flow T before thermoelectric heat pump1601Three kinds of situations, can by change operating mode make parallel connection cool down net
Temperature T before network entrance1602∈[Tc-min,Tc-max].Fig. 4 will be hereinafter described further.
Specific structure of the invention, principle and embodiment are further illustrated with reference to the accompanying drawing.
Fig. 1 is a kind of scientific experiment cupboards high-precision twin-stage based on thermoelectric heat pump according to an embodiment of the invention
The principle schematic diagram of temperature-controlling system, which includes Intermediate Heat Exchanger 1, second level liquid
Body circulation network 2, circulating pump 3, bypass branch 4, cold end triple valve 5, semiconductor heat pump assembly 6, cold end bypass 7, cooling branch
8, cold plate 9, branch solenoid valve 10, hot end triple valve 11, hot end bypass 12, bypass solenoid valve 13, shut-off valve 14, pressure
Gap sensor 15, temperature sensor 16, flowmeter 17.Including circulating pump 3, bypass branch 4, cold end triple valve 5, thermoelectric heat pump
Component 6, cold plate 9, branch solenoid valve 10, hot end triple valve 11, bypass solenoid valve 13, shut-off valve 14, pressure difference sensing
Device 15, temperature sensor 16, flowmeter 17 the level two circulatory system 2 be built in experiment cabinet 18.Each cooling branch 8 wraps
Cold plate 9, branch solenoid valve 10, temperature sensor 16 and flowmeter 17 are included, and forms cooling network in parallel.And
The water supply of the cooling network of connection and water return pipeline pass through the semiconductor heat pump assembly 6 progress heat exchange；It circulating pump 3 and partly leads
There is bypass branch 4 between body heat pump assembly 6；The cold end triple valve 5 connects water supply pipe, semiconductor heat pump assembly cold end 601
With cold end bypass 7；The hot end triple valve connection water return pipeline, semiconductor heat pump assembly hot end 602 and hot end bypass 12；Second level
Fluid circulation system 2 carries out heat with spacecraft thermal control bus 19 outside experiment cabinet by Intermediate Heat Exchanger 1 and exchanges.
The semiconductor heat pump assembly 6 include thermoelectric refrigeration component 603 based on P-N junction thermocouple, be arranged symmetrically it is cold
Hold internally finned tube 601 and hot end internally finned tube 602.To improve heat transfer efficiency, using the waveform internally finned tube with inner core.
The working principle of the invention and implementation process are as follows: circulating pump (3) drives liquid with the rotary speed working of approximately constant
The circulation in secondary liquid circulation loop (2).Differential pressure pickup (15) acquisition pressure difference signal passes to the control of bypass branch valve
Device (20), the bypass solenoid valve (13) on bypass branch (4) issue the aperture of Signal Regulation valve, control in parallel cooling
Network supplies water and the pressure difference of water return pipeline is definite value.Temperature sensor (1601) acquires temperature before water supply pipe semiconductor heat pump assembly
Degree, temperature sensor (1602) acquire cooling Web portal temperature i.e. in parallel after water supply pipe semiconductor heat pump assembly.Assuming that section
Learning cooling working medium temperature range needed for experiment cabinet is Tc-min~Tc-max, the temperature T before water supply pipe semiconductor heat pump assembly1601>
Tc-maxWhen, adjusting cold end triple valve (5) and hot end triple valve (11) respectively makes water supply fully enter thermoelectric heat pump cold end pipeline
(601), return water fully enters thermoelectric heat pump hot end pipeline (602), and thermoelectric cooler controller (21) issues signal control half
Heat is pumped from cold end to hot end, makes T by the power of thermoelectric cooler (603) in conductor heat pump components (6)1602∈[Tc-min,
Tc-max]；Work as T1601<Tc-min, adjusting cold end triple valve (5) makes water supply fully enter semiconductor heat pump assembly cold end pipeline (601),
Adjust the amount that hot end triple valve (11) control return water enters semiconductor heat pump assembly end tube road (602), thermoelectric cooler (603)
It does not work, makes T1602∈[Tc-min,Tc-max], semiconductor heat pump assembly is equivalent to a Recuperative heat exchanger at this time, prevents because of cooling
It is condensed in the too low experiment cabinet of coolant-temperature gage.The aperture of cold end triple valve (5) and hot end triple valve (11) is controlled by triple valve
Device (23) automatic adjustment；Work as T1601∈[Tc-min,Tc-max], adjusting cold end triple valve (5) and hot end triple valve (11) respectively makes to supply
Water fully enters cold end bypass (7), and return water fully enters hot end bypass (12), and thermoelectric cooler (603) does not work at this time.Such as figure
Shown in 4, for temperature of incoming flow T before thermoelectric heat pump1601Three kinds of situations, pass through cold end triple valve (5), hot end triple valve (11)
Regulation with thermoelectric cooler (603) can guarantee the Temperature of Working T into cooling network1602∈[Tc-min,Tc-max].Temperature passes
Sensor 1603 acquires cooling branch cold plate and exports Temperature of Working.For each cooling branch (8), pass through cooling branch road valve control
The flow that the big minor adjustment of device (22) controlling brancher solenoid valve (10) aperture passes through keeps cold plate out temperature T1602、
T1603Difference be definite value, to reach the temperature control demand of each branch part.Above-mentioned bypass branch valve positioner (20), thermoelectricity system
Cooler controller (21), cooling branch road valve controller (22) and threeway valve control (23) are integrated in the FPGA in experiment cabinet
In controller (24).Last each branch liquid summarizes by Intermediate Heat Exchanger (1) space flight passed to waste heat outside experiment cabinet
Device thermal control bus (19), circulation fluid temperature reduction, into next circulation.
The present invention is realized by semiconductor heat pump assembly to the adjustment of the cooling Temperature of Working of experiment cabinet entrance, and space flight is avoided
Influence of the fluctuation of device heat control system temperature of incoming flow to experiment cabinet temperature control, while can satisfy lower in the case of higher temperature of incoming flow
The demand for control of temperature, and avoid condensing in cabinet in the case of lower temperature of incoming flow, improve having for experiment cabinet temperature control
Effect property and accuracy are conducive to ensure going on smoothly for space science experiment.
Claims (10)
1. a kind of scientific experiment cupboards high-precision twin-stage temperature-controlling system, characterized by comprising:
Intermediate Heat Exchanger (1), the Intermediate Heat Exchanger (1) are placed in except experiment cabinet (18)；
The secondary liquid circulatory system (2) comprising circulating pump (3), cold end triple valve (5), semiconductor heat pump assembly (6), hot end
Triple valve (11), bypass solenoid valve (13), shut-off valve (14), cooling network, and be placed within experiment cabinet (18),
Wherein:
The cooling network includes multiple cooling branches in parallel, and each cooling branch (8) includes cold plate (9), branch electromagnetism tune
Valve (10), temperature sensor (16) and flowmeter (17) are saved,
The water supply pipe and water return pipeline of the cooling network carry out heat exchange by the semiconductor heat pump assembly (6)；
Bypass branch (4) are equipped between the semiconductor heat pump assembly (6) and circulating pump (3)；
The cold end triple valve (5) connects the cold end (601) and a cold end of the water supply pipe, semiconductor heat pump assembly (6)
It bypasses (7)；
The hot end triple valve (11) connects the hot end (602) and a hot end of the water return pipeline, semiconductor heat pump assembly (6)
It bypasses (12)；
Spacecraft thermal control bus (19) outside the secondary liquid circulatory system (2) and experiment cabinet passes through Intermediate Heat Exchanger (1)
Heat exchange is carried out,
The bypass branch (4) is equipped with a bypass solenoid valve (13) and differential pressure pickup (15).
2. scientific experiment cupboards high-precision twin-stage temperature-controlling system according to claim 1, it is characterised in that the semiconductor heat
Pump assembly (6) includes:
Thermoelectric refrigeration component (603) based on P-N junction thermocouple,
Cold end end internally finned tube (601), the hot end internally finned tube (602) being arranged symmetrically.
3. scientific experiment cupboards high-precision twin-stage temperature-controlling system according to claim 2, it is characterised in that further comprise:
Bypass branch valve positioner (20) receives the signal of differential pressure pickup (15), and other by the control of its output signal
Road solenoid valve (13)；
Threeway valve control (23), according to the signal from temperature sensor (1601) before water supply pipe semiconductor heat pump assembly
With the signal from temperature sensor (1602) after water supply pipe semiconductor heat pump assembly, cold end triple valve (5) and hot end are controlled
Triple valve (11),
Thermoelectric cooler controller (21), according to from temperature sensor (1601) before water supply pipe semiconductor heat pump assembly
Signal and the signal for coming from temperature sensor (1602) after water supply pipe semiconductor heat pump assembly control semiconductor heat pump assembly
(6) thermoelectric cooler (603) in,
Cooling branch road valve controller (22), according to from temperature sensor (1602) after water supply pipe semiconductor heat pump assembly
Signal and come from the signal of each cooling branch cold plate outlet temperature sensor (1603), control the branch electromagnetism of cooling branch road
Regulating valve (10).
4. scientific experiment cupboards high-precision twin-stage temperature-controlling system according to claim 3, it is characterised in that:
Bypass branch valve positioner (20), thermoelectric cooler controller (21), cooling branch road valve controller (22) and threeway
Valve control (23) is integrated in FPGA controller (24).
5. scientific experiment cupboards high-precision twin-stage temperature-controlling system described in one of -4 according to claim 1, it is characterised in that:
By the bypass solenoid valve (13) on bypass branch (4), the pressure difference between water supply pipe and water return pipeline is controlled；
Change the scientific experiment cupboards high-precision twin-stage temperature-controlling system by control cold end triple valve (5) and hot end triple valve (11)
Operating mode；
By adjusting the power of the thermoelectric refrigeration component (603) in semiconductor heat pump assembly (6), the entrance work of cooling network is controlled
The temperature of matter；
By the branch solenoid valve (10) of each cooling branch (8), controls the import working medium of each cooling branch cold plate (9) and go out
The temperature difference of mouth working medium.
6. the scientific experiment cupboards high-precision based on scientific experiment cupboards high-precision twin-stage temperature-controlling system according to claim 1 is double
Grade temperature control method, characterized by comprising:
Make circulating pump (3) with the rotary speed working of approximately constant, drive liquid circulation in secondary liquid circulation loop (2),
The pressure difference signal that differential pressure pickup (15) acquire is passed to bypass branch valve positioner (20),
The aperture of the bypass solenoid valve (13) on bypass branch (4) is controlled, with bypass branch valve positioner (20) with handle
The control of the pressure difference of water supply pipe and water return pipeline is definite value,
With temperature before temperature sensor (1601) acquisition water supply pipe semiconductor heat pump assembly before water supply pipe semiconductor heat pump assembly
Degree,
Cooling Web portal temperature in parallel is acquired with temperature sensor (1602) after water supply pipe semiconductor heat pump assembly,
If cooling working medium temperature range needed for scientific experiment cupboards is Tc-min~Tc-max, and:
The temperature T before water supply pipe semiconductor heat pump assembly1601>Tc-maxWhen, cold end triple valve (5) and hot end threeway are adjusted respectively
Valve (11), which makes to supply water, fully enters thermoelectric heat pump cold end pipeline (601), and return water fully enters thermoelectric heat pump hot end pipeline
It (602), will be hot with the power of thermoelectric cooler (603) in thermoelectric cooler controller (21) control semiconductor heat pump assembly (6)
Amount is pumped from cold end to hot end, makes T1602∈[Tc-min,Tc-max]；Work as T1601<Tc-min, adjusting cold end triple valve (5) makes to supply water all
Into semiconductor heat pump assembly cold end pipeline (601), enter semiconductor heat pump assembly heat with hot end triple valve (11) control return water
Thermoelectric cooler (603) is placed in off position, makes T by the amount on end pipe road (602)1602∈[Tc-min,Tc-max], it partly leads at this time
Body heat pump assembly is equivalent to a Recuperative heat exchanger, prevents because condensing in the too low experiment cabinet of cooling water temperature, wherein cold end
The aperture of triple valve (5) and hot end triple valve (11) is automatically adjusted by threeway valve control (23)；
Work as T1601∈[Tc-min,Tc-max], by adjust cold end triple valve (5) respectively and hot end triple valve (11) make to supply water all into
Enter cold end bypass (7), so that return water is fully entered hot end bypass (12), thermoelectric cooler (603) is made to be in off position.
7. scientific experiment cupboards high-precision twin-stage temperature control method according to claim 6, characterized by comprising:
For temperature of incoming flow T before thermoelectric heat pump1601>Tc-max、T1601<Tc-min、T1601∈[Tc-min,Tc-max] three kinds of situations,
By regulation cold end triple valve (5), hot end triple valve (11) and thermoelectric cooler (603), make the working medium temperature for entering cooling network
Spend T1602∈[Tc-min,Tc-max]。
8. scientific experiment cupboards high-precision twin-stage temperature control method according to claim 7, it is characterised in that further comprise:
Temperature of Working is exported with the cold plate that cooling branch cold plate outlet temperature sensor (1603) acquire cooling branch,
For each cooling branch (8), with the aperture of cooling branch road valve controller (22) controlling brancher solenoid valve (10),
To adjust the flow by cooling branch (8), cold plate out temperature T is kept1602、T1603Difference be definite value, to reach each
The temperature control demand of branch part.
9. scientific experiment cupboards high-precision twin-stage temperature control method according to claim 8, it is characterised in that:
Bypass branch valve positioner (20) (19), thermoelectric cooler controller (21) (20), cooling branch road valve controller
(22) (21) and threeway valve control (23) (22) are integrated in the FPGA controller in experiment cabinet (24) (23).
10. the scientific experiment cupboards high-precision twin-stage temperature control method according to one of claim 6-9, it is characterised in that:
Summarize the circulating liquid of all cooling branches (8) by Intermediate Heat Exchanger (1), so that waste heat be passed to outside experiment cabinet
The spacecraft thermal control bus (19) in portion, makes circulation fluid temperature reduction.
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| CN111238122A (en) * | 2020-02-27 | 2020-06-05 | 上海辛格林纳新时达电机有限公司 | Anti-condensation cabinet body and anti-condensation method for cabinet body |
| 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 |
| CN111998707A (en) * | 2020-09-03 | 2020-11-27 | 中国电子科技集团公司第十四研究所 | Multi-parallel branch stabilizing device and method for two-phase cooling system |
| CN113091348A (en) * | 2021-04-07 | 2021-07-09 | 青岛科技大学 | Semiconductor TEC ultralow-temperature refrigeration auxiliary circulation system and method |
| CN115061550A (en) * | 2022-06-20 | 2022-09-16 | 之江实验室 | Distributed thermal management device based on thermoelectric cooler and control method |
| CN117577601A (en) * | 2024-01-12 | 2024-02-20 | 广东海洋大学 | Microcircuit efficient thermal control system based on liquid metal cold carrying |
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| CN111238122A (en) * | 2020-02-27 | 2020-06-05 | 上海辛格林纳新时达电机有限公司 | Anti-condensation cabinet body and anti-condensation method for cabinet body |
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| 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 |
| CN111998707A (en) * | 2020-09-03 | 2020-11-27 | 中国电子科技集团公司第十四研究所 | Multi-parallel branch stabilizing device and method for two-phase cooling system |
| CN113091348A (en) * | 2021-04-07 | 2021-07-09 | 青岛科技大学 | Semiconductor TEC ultralow-temperature refrigeration auxiliary circulation system and method |
| CN115061550A (en) * | 2022-06-20 | 2022-09-16 | 之江实验室 | Distributed thermal management device based on thermoelectric cooler and control method |
| CN115061550B (en) * | 2022-06-20 | 2024-04-26 | 之江实验室 | Distributed thermal management device based on thermoelectric refrigerator and control method |
| CN117577601A (en) * | 2024-01-12 | 2024-02-20 | 广东海洋大学 | Microcircuit efficient thermal control system based on liquid metal cold carrying |
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