CN110094883B - Integrated liquid temperature control system - Google Patents
Integrated liquid temperature control system Download PDFInfo
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- CN110094883B CN110094883B CN201910447419.4A CN201910447419A CN110094883B CN 110094883 B CN110094883 B CN 110094883B CN 201910447419 A CN201910447419 A CN 201910447419A CN 110094883 B CN110094883 B CN 110094883B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- Accessories For Mixers (AREA)
- Devices For Medical Bathing And Washing (AREA)
Abstract
An integrated liquid temperature control system is used for mixing low-temperature stock solution and constant-temperature stock solution of the same kind and respectively sending constant-temperature output liquid of different temperatures, and comprises a water bath box, a heat exchange box, a liquid mixer, a pipeline, a delivery pump and a circulating pump, wherein the heat exchange box is positioned in an inner cavity of the water bath box, a plurality of partition plates are arranged in the heat exchange box at intervals along the vertical direction, a plurality of heat exchange chambers are formed in the heat exchange box at intervals along the vertical direction, an inlet of the liquid mixer is connected with an inlet of the low-temperature stock solution of the system, an outlet of the liquid mixer is connected with the top of the heat exchange box, so that the liquid in the liquid mixer can flow into the uppermost heat exchange chamber in the heat exchange box, the plurality of heat exchange chambers are respectively connected with an outlet of the delivery pump through respective one heat exchange chamber liquid outlet electromagnetic valve, a temperature sensor is arranged in each heat exchange chamber, the liquid temperature in the plurality of heat exchange chambers is transmitted to, so that the constant temperature output liquid with the required temperature is sent out from the system.
Description
Technical Field
The invention relates to the field of temperature control systems, in particular to an integrated liquid temperature control system.
Background
In many production processes of modern industry, liquid with specific temperature needs to be used, and more commonly, liquid with different temperatures needs to be used respectively, so that the control of the liquid temperature is particularly important, while a heat exchange method is the most common temperature control method, namely, the liquid with different temperatures is respectively positioned inside and outside a container such as a pipeline or a box body, so as to realize heat exchange between two liquids, thereby achieving the purpose of controlling the temperature of one liquid, but in the existing liquid temperature heat exchange control, when the same liquid needs to be controlled at different temperatures in real time, a plurality of sets of independent heat exchange equipment need to be adopted, each set of equipment is respectively responsible for outputting the liquid with a certain temperature, the heat exchange mode causes that more equipment required by a temperature control system occupies a large amount of fields, and the complexity of the production process is not favorable for the cooperation of the equipment, and the heat exchange efficiency is low, and the requirement on liquid temperature control in modern production is difficult to meet.
Disclosure of Invention
The invention aims to provide an integrated liquid temperature control system, which meets the integration requirement so as to avoid the problem that the existing temperature control system needs to adopt a plurality of sets of independent heat exchange equipment.
The technical scheme adopted by the invention for solving the technical problems is as follows: the integrated liquid temperature control system is used for mixing low-temperature stock solution and constant-temperature stock solution of the same type and respectively sending constant-temperature output liquid of different temperatures, and comprises a water bath box, a heat exchange box, a liquid mixer, a pipeline, a delivery pump and a circulating pump, wherein the water bath box is provided with a constant-temperature stock solution inlet and a constant-temperature stock solution outlet, the heat exchange box is positioned in an inner cavity of the water bath box, a plurality of partition plates are arranged in the heat exchange box at intervals along the vertical direction, so that a plurality of heat exchange chambers are formed in the heat exchange box at intervals along the vertical direction, each partition plate is provided with a through hole for the liquid in the heat exchange chamber above the partition plate to flow into the heat exchange chamber below the partition plate, all the through holes are close to the side wall of the heat exchange box, and the through holes of two adjacent partition plates;
the inlet of the liquid mixer is connected with the low-temperature stock solution inlet of the system through a low-temperature liquid inlet electromagnetic valve, the outlet of the liquid mixer is connected with the top of the heat exchange box through a pipeline penetrating through the side wall of the heat exchange box, so that liquid in the liquid mixer can flow into the uppermost heat exchange chamber in the heat exchange box, the heat exchange chambers are respectively connected with the inlet of the delivery pump through respective liquid outlet electromagnetic valves of the heat exchange chambers, and the outlet of the output pump is connected with a liquid output electromagnetic valve;
the temperature sensors are arranged in the heat exchange chambers, the temperature of liquid in the heat exchange chambers is transmitted to the controller through the temperature sensors, one of the liquid outlet electromagnetic valves of the heat exchange chambers is opened through the controller, and constant-temperature output liquid at the required temperature can flow into the output pump and is sent out from the system;
the outlet of the output pump is also connected with the inlet of the circulating pump through a heat-exchange circulating liquid electromagnetic valve, the outlet of the circulating pump is connected with the inlet of the liquid mixer through a circulating liquid inlet electromagnetic valve, and when the constant-temperature output liquid sent out by the output pump is excessive, the controller opens the heat-exchange circulating liquid electromagnetic valve and the circulating liquid inlet electromagnetic valve, so that the constant-temperature output liquid can flow into the liquid mixer through the circulating pump and is mixed with the low-temperature stock solution;
the inlet of the circulating pump is also communicated with the inner cavity of the water bath tank through a constant-temperature stock solution electromagnetic valve, and when the constant-temperature stock solution electromagnetic valve is closed after heat exchange, the controller enables the constant-temperature stock solution electromagnetic valve to be opened, so that constant-temperature stock solution can flow into the liquid mixer through the circulating pump and be mixed with low-temperature stock solution;
and the outlet of the circulating pump is also communicated with the inner cavity of the water bath tank through a circulating liquid return electromagnetic valve, so that redundant liquid can flow back into the water bath tank.
Preferably, the water bath box is a vertically placed cylindrical structure, and the constant-temperature stock solution inlet and the constant-temperature stock solution outlet are respectively located on the top surface and the bottom surface of the cylindrical structure of the water bath box, so that the constant-temperature stock solution can continuously flow in the water bath box.
Preferably, the heat exchange box is a cylindrical structure vertically placed at the bottom of the inner cavity of the water bath box.
Preferably, the plurality of partition plates are circular plates matched with the inner diameter of the heat exchange box, and are horizontally arranged.
Preferably, one side edge of each through hole is connected with the side wall of the heat exchange box, and the axes of the through holes on two adjacent partition plates are symmetrical about the axis of the heat exchange box.
Preferably, the bottom of the heat exchange box is connected with a liquid drainage pipeline, and the liquid drainage pipeline penetrates through the side wall of the water bath box and is used for discharging liquid in the heat exchange box when the system is stopped.
Preferably, the liquid drainage pipeline is communicated with the heat exchange chamber at the lowest part in the heat exchange box, and a manual valve is installed on the liquid drainage pipeline.
Preferably, the temperature sensor is a wireless temperature sensor.
Preferably, the low-temperature stock solution and the constant-temperature stock solution both adopt deionized water.
Preferably, a three-dimensional screw thread is arranged in the liquid mixer so as to facilitate the liquid to be fully mixed in the liquid mixer.
The working principle is as follows: the heat exchange box is arranged in the water bath box, the constant-temperature stock solution is introduced into the water bath box to exchange heat with the liquid in the heat exchange box, and the constant-temperature stock solution is controlled to continuously flow in from a constant-temperature stock solution inlet of the water bath box and continuously flow out from a constant-temperature stock solution outlet, so that the constant-temperature stock solution in the water bath box is kept unchanged in the heat exchange process, and the accurate control on the liquid temperature in the heat exchange box is facilitated;
when the system works, low-temperature stock solution is conveyed into the liquid mixer, constant-temperature stock solution in the water bath tank is also conveyed into the liquid mixer through the circulating pump, the mixed liquid is conveyed into the uppermost heat exchange chamber in the heat exchange tank and flows into the heat exchange chamber at the bottom of the heat exchange tank step by step, as the through holes of the partition plates are close to the side wall of the heat exchange tank, and the through holes of the two adjacent partition plates are respectively positioned at the two sides of the central axis of the heat exchange tank along the vertical direction, the liquid can flow into the heat exchange chamber below after flowing for a certain time in one heat exchange chamber, so that the liquid in different heat exchange chambers can enter the heat exchange tank for different durations, and the longer the duration is, the longer the heat exchange time between the liquid in the heat exchange tank and the external constant-temperature stock solution is, the liquid with different temperatures can be stored in the different heat exchange chambers, the temperature of the liquid in each heat exchange chamber is monitored through, the liquid outlet electromagnetic valve of the heat exchange chamber corresponding to the required liquid temperature is opened through the controller, the system can output liquid at a certain temperature by using the output pump, and when liquid at another temperature is required, the liquid outlet electromagnetic valve of the other heat exchange chamber is opened through the controller;
when the liquid flow output by the output pump to the outside of the system is overlarge, the circulating liquid electromagnetic valve is opened after heat exchange, so that the overlarge output liquid flows to the circulating pump and then flows into the liquid mixer, and meanwhile, the constant-temperature stock solution is stopped being conveyed to the liquid mixer from the water bath tank, so that the redundant output liquid and the low-temperature stock solution can be mixed and then heat exchange is carried out again, the cyclic utilization is realized, and when the liquid flow output by the output pump to the outside of the system exceeds the upper limit of the circulation of the system, the overlarge output liquid can directly flow back to the water bath tank by opening the circulating liquid return electromagnetic valve, and the waste is avoided.
According to the technical scheme, the invention has the beneficial effects that:
the integrated liquid temperature control system provided by the invention realizes the integration requirement, has a simple and reliable structure, can conveniently realize the real-time control of different liquid temperatures, and avoids the problems that the existing temperature control system needs to adopt a plurality of sets of independent heat exchange equipment, so that the equipment occupies a large amount of places, the production process is complicated, and the cooperation of each set of equipment are not facilitated, and the like.
Drawings
FIG. 1 is a schematic diagram of the present invention.
The labels in the figure are: 1. the system comprises a water bath box, a heat exchange box, a circulating pump, a delivery pump, a liquid mixer, a temperature sensor, a thermostatic stock solution inlet, a thermostatic stock solution outlet, a1-a5, a heat exchange chamber liquid outlet electromagnetic valve, a liquid output electromagnetic valve, a heat exchange post-circulating liquid electromagnetic valve, a thermostatic stock solution electromagnetic valve, a circulating liquid inlet electromagnetic valve, a circulating liquid return electromagnetic valve, a low-temperature liquid inlet electromagnetic valve, a manual valve and a manual valve.
Detailed Description
Referring to the drawings, the specific embodiments are as follows:
integral type liquid temperature control system for mix the low temperature stoste of the same kind and constant temperature stoste to send out the constant temperature output liquid of different temperatures respectively, this system includes water bath 1, heat transfer case 2, liquid mixer 5, pipeline, delivery pump 4 and circulating pump 3, constant temperature stoste inlet 7 and constant temperature stoste export 8 have been seted up on the water bath 1, and water bath 1 is the tubular structure of vertical placing, and constant temperature stoste inlet 7 and constant temperature stoste export 8 are located the top surface and the bottom surface of 1 tubular structure of water bath respectively, so that constant temperature stoste continuously flows in water bath 1, it is equipped with three-dimensional screw thread to open in liquid mixer 5, so that liquid intensive mixing in liquid mixer 5.
The heat exchange box 2 is of a cylindrical structure vertically placed at the bottom of an inner cavity of the water bath box 1, a plurality of partition plates are arranged in the heat exchange box 2 at intervals along the vertical direction, the partition plates are circular plates matched with the inner diameter of the heat exchange box 2, the partition plates are horizontally arranged, a plurality of heat exchange chambers are formed in the heat exchange box 2 at intervals along the vertical direction, each partition plate is provided with a through hole for liquid in the heat exchange chamber above the partition plate to flow into the heat exchange chamber below the partition plate, one side edge of each through hole is connected with the side wall of the heat exchange box 2, and the axes of the through holes on two adjacent partition plates are symmetrical about the axis of the heat exchange box 2;
an inlet of the liquid mixer 5 is connected with a low-temperature stock solution inlet of the system through a low-temperature liquid inlet electromagnetic valve g, an outlet of the liquid mixer 5 is connected with the top of the heat exchange box 2 through a pipeline penetrating through the side wall of the heat exchange chamber, so that liquid in the liquid mixer 5 can flow into the uppermost heat exchange chamber in the heat exchange box 2, a plurality of heat exchange chambers are respectively connected with an inlet of the delivery pump 4 through respective liquid outlet electromagnetic valves of the heat exchange chambers, and an outlet of the output pump 4 is connected with a liquid output electromagnetic valve b; the bottom of heat exchange box 2 is connected with the flowing back pipeline, and the flowing back pipeline runs through the lateral wall of water bath 1, supplies the liquid in heat exchange box 2 to discharge when the system shuts down, and flowing back pipeline and heat exchange box 2 middle and bottom heat transfer chamber intercommunication are installed manual valve h on the flowing back pipeline.
The heat exchange chambers are internally provided with temperature sensors 6, the temperature sensors 6 adopt wireless temperature sensors, the temperature of liquid in the heat exchange chambers is transmitted to the controller through the temperature sensors 6, one of the liquid outlet electromagnetic valves a1-a5 of the heat exchange chambers is opened through the controller, and constant-temperature output liquid with required temperature can flow into the output pump 4 and is sent out from the system.
The export of delivery pump 4 is still through the access connection of heat transfer back circulation liquid solenoid valve c with circulating pump 3, and the export of circulating pump 3 is through the access connection of circulation feed liquor solenoid valve e with liquid mixer 5, and when the constant temperature output liquid that delivery pump 4 sent was too much, the controller made heat transfer back circulation liquid solenoid valve c open with circulation feed liquor solenoid valve e to make constant temperature output liquid can flow into liquid mixer 5 and mix with low temperature stoste through circulating pump 3.
The import of circulating pump 3 still communicates with the inner chamber of water bath 1 through constant temperature stoste solenoid valve d, and when circulation liquid solenoid valve c closed after the heat transfer, the controller made constant temperature stoste solenoid valve d open to make constant temperature stoste can flow into liquid mixer 5 and mix with low temperature stoste through circulating pump 3.
The outlet of the circulating pump 3 is also communicated with the inner cavity of the water bath tank 1 through a circulating liquid return electromagnetic valve f, so that redundant liquid can flow back into the water bath tank 1.
The working process is as follows: when the system starts to work, the constant-temperature stock solution continuously flows in the water bath box 1 through the constant-temperature stock solution inlet 7 and the constant-temperature stock solution outlet 8, so that the constant-temperature stock solution in the water bath box 1 is kept unchanged in the heat exchange process, the temperature of the liquid in the heat exchange box 2 is accurately controlled, the low-temperature stock solution is fed into the liquid mixer 5 through the low-temperature stock solution inlet, the constant-temperature stock solution electromagnetic valve d and the circulating liquid inlet electromagnetic valve e are simultaneously opened, the constant-temperature stock solution flows into the liquid mixer 5 through the circulating pump 3 and is mixed with the low-temperature stock solution, then flows into the uppermost heat exchange chamber in the heat exchange box 2 and sequentially flows into the heat exchange chambers downwards in the heat exchange box 2, so that the heat exchange chambers respectively contain liquids with different temperatures due to different heat exchange durations, meanwhile, the wireless temperature sensors transmit the liquid temperatures in the heat exchange chambers to the controller, and when the system is required to output the liquid with a certain temperature outwards, the controller enables one of the liquid outlet electromagnetic valves a1-a5 of the heat exchange chamber, namely one of the liquid outlet electromagnetic valves a1-a5, in the heat exchange chamber, the liquid temperature of which corresponds to the required temperature, to be opened, the liquid output electromagnetic valve b is also opened, the liquid at the required temperature can be sent out through the delivery pump 4, and when the liquid at the other temperature is required, the controller enables the liquid outlet electromagnetic valve of the other heat exchange chamber to be opened; when the flow of the liquid output by the output pump 4 to the outside of the system is overlarge, the circulating liquid electromagnetic valve c is opened after heat exchange, so that the excessive output liquid flows to the circulating pump 3 and then flows into the liquid mixer 5, and the constant-temperature stock solution electromagnetic valve d is closed at the same time, so that the constant-temperature stock solution is stopped being conveyed from the water bath tank 1 to the liquid mixer 5, the redundant output liquid and the low-temperature stock solution can be mixed and then heat exchange is carried out again, and the cyclic utilization is realized; when the flow of the liquid output to the outside of the system by the output pump 4 exceeds the upper limit of the system circulation, the excessive output liquid can directly flow back to the water bath tank 1 by opening the circulation liquid return electromagnetic valve f, so that the waste is avoided; when the system is shut down, the residual liquid in the heat exchange box 2 can be discharged by opening the manual valve h on the liquid discharge pipeline.
Claims (10)
1. Integral type liquid temperature control system for mix the low temperature stoste of the same kind and constant temperature stoste to send out the constant temperature output liquid of different temperatures respectively, its characterized in that: the system comprises a water bath box (1), a heat exchange box (2), a liquid mixer (5), a pipeline, a delivery pump (4) and a circulating pump (3), wherein a constant-temperature stock solution inlet (7) and a constant-temperature stock solution outlet (8) are formed in the water bath box (1), the heat exchange box (2) is positioned in an inner cavity of the water bath box (1), a plurality of partition plates are arranged in the heat exchange box (2) at intervals along the vertical direction, so that a plurality of heat exchange chambers are formed in the heat exchange box (2) at intervals along the vertical direction, each partition plate is provided with a through hole for liquid in the heat exchange chamber above the partition plate to flow into the heat exchange chamber below the partition plate, all the through holes are close to the side wall of the heat exchange box (2), and the through holes of two adjacent partition plates are respectively positioned at two sides of the central axis of the;
the inlet of the liquid mixer (5) is connected with the low-temperature stock solution inlet of the system through a low-temperature liquid inlet electromagnetic valve, the outlet of the liquid mixer (5) is connected with the top of the heat exchange box (2) through a pipeline penetrating through the side wall of the heat exchange chamber, so that liquid in the liquid mixer (5) can flow into the uppermost heat exchange chamber in the heat exchange box (2), the heat exchange chambers are respectively connected with the inlet of the delivery pump (4) through a liquid outlet electromagnetic valve of each heat exchange chamber, and the outlet of the output pump (4) is connected with a liquid output electromagnetic valve;
the heat exchange chambers are internally provided with temperature sensors (6), the temperature of liquid in the heat exchange chambers is transmitted to the controller through the temperature sensors (6), one of the liquid outlet electromagnetic valves of the heat exchange chambers is opened through the controller, and constant-temperature output liquid with required temperature can flow into the output pump (4) and is sent out from the system;
the outlet of the output pump (4) is also connected with the inlet of the circulating pump (3) through a heat-exchange circulating liquid electromagnetic valve, the outlet of the circulating pump (3) is connected with the inlet of the liquid mixer (5) through a circulating liquid electromagnetic valve, and when the constant-temperature output liquid sent out by the output pump (4) is excessive, the controller opens the heat-exchange circulating liquid electromagnetic valve and the circulating liquid electromagnetic valve, so that the constant-temperature output liquid can flow into the liquid mixer (5) through the circulating pump (3) and be mixed with the low-temperature stock solution;
the inlet of the circulating pump (3) is also communicated with the inner cavity of the water bath tank (1) through a constant-temperature stock solution electromagnetic valve, and when the circulating solution electromagnetic valve is closed after heat exchange, the controller enables the constant-temperature stock solution electromagnetic valve to be opened, so that constant-temperature stock solution can flow into the liquid mixer (5) through the circulating pump (3) and be mixed with low-temperature stock solution;
the outlet of the circulating pump (3) is also communicated with the inner cavity of the water bath tank (1) through a circulating liquid return electromagnetic valve, so that redundant liquid can flow back into the water bath tank (1).
2. The integrated liquid temperature control system of claim 1, wherein: the water bath box (1) is a vertically placed cylindrical structure, and the constant-temperature stock solution inlet (7) and the constant-temperature stock solution outlet (8) are respectively located on the top surface and the bottom surface of the cylindrical structure of the water bath box (1) so that the constant-temperature stock solution can continuously flow in the water bath box (1).
3. The integrated liquid temperature control system of claim 1, wherein: the heat exchange box (2) is of a cylindrical structure which is vertically placed at the bottom of the inner cavity of the water bath box (1).
4. The integrated liquid temperature control system of claim 3, wherein: the plurality of clapboards are circular boards matched with the inner diameter of the heat exchange box (2), and are horizontally arranged.
5. The integrated liquid temperature control system of claim 4, wherein: one side edges of all the through holes are connected with the side wall of the heat exchange box (2), and the axes of the through holes on the two adjacent partition plates are symmetrical about the axis of the heat exchange box (2).
6. The integrated liquid temperature control system of claim 1, wherein: the bottom of the heat exchange box (2) is connected with a liquid drainage pipeline which penetrates through the side wall of the water bath box (1) and is used for discharging liquid in the heat exchange box (2) when the system is stopped.
7. The integrated liquid temperature control system of claim 6, wherein: the liquid drainage pipeline is communicated with the heat exchange chamber at the lowest part in the heat exchange box (2), and a manual valve is installed on the liquid drainage pipeline.
8. The integrated liquid temperature control system of claim 1, wherein: the temperature sensor (6) adopts a wireless temperature sensor.
9. The integrated liquid temperature control system of claim 1, wherein: and the low-temperature stock solution and the constant-temperature stock solution both adopt deionized water.
10. The integrated liquid temperature control system of claim 1, wherein: three-dimensional threads are arranged in the liquid mixer (5) so as to facilitate the liquid to be fully mixed in the liquid mixer (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910447419.4A CN110094883B (en) | 2019-05-27 | 2019-05-27 | Integrated liquid temperature control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910447419.4A CN110094883B (en) | 2019-05-27 | 2019-05-27 | Integrated liquid temperature control system |
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| CN110094883A CN110094883A (en) | 2019-08-06 |
| CN110094883B true CN110094883B (en) | 2020-10-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2258605Y (en) * | 1995-11-02 | 1997-07-30 | 王英和 | Coil tube type water-water heat exchanger |
| CN203240762U (en) * | 2013-04-24 | 2013-10-16 | 湖州职业技术学院 | Cold water backflow device |
| CN104819569A (en) * | 2015-05-12 | 2015-08-05 | 广东今泉节能设备有限公司 | Air source heat pump heating type water heater device |
| CN206362220U (en) * | 2016-12-29 | 2017-07-28 | 新奥（中国）燃气投资有限公司 | A kind of heat exchanger |
| WO2018071956A8 (en) * | 2016-10-19 | 2018-05-24 | Legioguard Pty Ltd | Improvements in hot, tempered and cold water delivery systems |
-
2019
- 2019-05-27 CN CN201910447419.4A patent/CN110094883B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2258605Y (en) * | 1995-11-02 | 1997-07-30 | 王英和 | Coil tube type water-water heat exchanger |
| CN203240762U (en) * | 2013-04-24 | 2013-10-16 | 湖州职业技术学院 | Cold water backflow device |
| CN104819569A (en) * | 2015-05-12 | 2015-08-05 | 广东今泉节能设备有限公司 | Air source heat pump heating type water heater device |
| WO2018071956A8 (en) * | 2016-10-19 | 2018-05-24 | Legioguard Pty Ltd | Improvements in hot, tempered and cold water delivery systems |
| CN206362220U (en) * | 2016-12-29 | 2017-07-28 | 新奥（中国）燃气投资有限公司 | A kind of heat exchanger |
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| CN110094883A (en) | 2019-08-06 |
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Application publication date: 20190806 Assignee: Luoyang Youce New Energy Technology Co.,Ltd. Assignor: HENAN University OF SCIENCE AND TECHNOLOGY Contract record no.: X2023980037564 Denomination of invention: Integrated liquid temperature control system Granted publication date: 20201030 License type: Common License Record date: 20230705 |