CN110793201A - Air-cooled high-temperature heat exchange system with controllable water tank temperature and use method thereof - Google Patents
Air-cooled high-temperature heat exchange system with controllable water tank temperature and use method thereof Download PDFInfo
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- CN110793201A CN110793201A CN201911105742.XA CN201911105742A CN110793201A CN 110793201 A CN110793201 A CN 110793201A CN 201911105742 A CN201911105742 A CN 201911105742A CN 110793201 A CN110793201 A CN 110793201A
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- temperature
- electronic expansion
- expansion valve
- water tank
- circulating fluid
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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
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
- F24H4/04—Storage 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses an air-cooled high-temperature heat exchange system with a controllable water tank temperature, which comprises a high-temperature circulating fluid system and a refrigeration circulating system, wherein a water tank cooling heat exchanger is additionally arranged in a water tank of the high-temperature circulating fluid system, the refrigeration circulation is used for cooling circulating fluid supplement liquid in the water tank through the heat exchanger, the temperature of the water tank is controlled, the influence of expansion with heat and contraction with cold on the circulating system caused by circulating liquid in the water tank is reduced, the phenomenon that the circulating liquid in the water tank is overfull or stops too little is avoided, and meanwhile, the risk of scalding operators is reduced. Meanwhile, the invention also discloses a using method of the high-temperature heat exchange system.
Description
Technical Field
The invention relates to a high-temperature heat exchange system, in particular to an air-cooled high-temperature heat exchange system with a controllable water tank temperature and a using method thereof.
Background
For wide temperature range high temperature heat exchange equipment, the temperature of the circulating liquid rises after absorbing heat energy, the volume of the circulating liquid expands, a liquid circulating system is a closed loop, if no proper constant pressure liquid supplementing water tank is available, the circulating medium contains gas, the flow of the circulating loop is influenced, and the pressure in the pipe also rises along with the expansion of the volume. Conversely, as the temperature decreases, the volume of the liquid decreases, and a negative pressure is also created within the tube, which can adversely affect flow and pressure. The constant-pressure liquid supplementing water tank is used for accommodating volume change of thermal expansion and cold contraction of the circulating liquid, ensuring that the circulating loop works within a certain pressure range, and supplementing liquid for the liquid circulating system.
And to high temperature heat exchange equipment, because the influence of heat transfer, the circulating fluid supplemental liquid temperature in the water tank also can rise, is influenced by expend with heat and contract with cold, and the circulating liquid level also can change in a very large scale in the water tank, causes the phenomenon of overfull overflow or too little shut down easily, seriously reduces the performance of water tank, if the water tank temperature is too high simultaneously, operating personnel adds the circulating liquid and checks and maintains the in-process, has the risk of being scalded.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects and defects of the prior art, the invention provides the air-cooled high-temperature heat exchange system with the temperature controllable water tank and the use method thereof, which can control the temperature of the supplementing liquid in the water tank, avoid the influence of the expansion caused by heat and the contraction caused by cold of the supplementing circulating liquid in the water tank on a liquid circulating system, and simultaneously reduce the risk of scalding operators.
The technical scheme is as follows: the invention discloses an air-cooled high-temperature heat exchange system with a controllable water tank temperature, which is characterized in that: the high-temperature circulating fluid system comprises an electric heater, a water pump and a first temperature sensor which are sequentially connected, the electric heater is connected with the water tank, a second temperature sensor is arranged in the water tank, circulating fluid supplementing liquid in the water tank and the refrigerating circulating system complete heat exchange through a first evaporator to cool the circulating fluid supplementing liquid in the water tank; a first electromagnetic valve is arranged in front of the electric heater;
the refrigeration circulating system is sequentially provided with a compressor, a condenser, a drying filter, a first electronic expansion valve, a first evaporator, a second electronic expansion valve and a second evaporator, the first electronic expansion valve and the first evaporator form a first refrigeration branch, the second electronic expansion valve and the second evaporator form a second refrigeration branch, the first refrigeration branch and the second refrigeration branch are arranged in parallel, and the first refrigeration branch and the second refrigeration branch are also arranged in parallel with a third electronic expansion valve; the second evaporator and a second electromagnetic valve arranged on the liquid inlet side of the second evaporator form a circulating fluid branch which is connected with the first electromagnetic valve in parallel; the compressor and the fourth electronic expansion valve are arranged in parallel, an inlet pipeline of the compressor is provided with a pressure sensor, and an outlet pipeline of the compressor is provided with a third temperature sensor; the condenser comprises a fan, and the fan is connected with the motor; the refrigeration circulation system completes heat exchange with the high-temperature circulation fluid system through the second evaporator to cool the high-temperature circulation fluid.
The first electromagnetic valve and the second electromagnetic valve switch and adjust the temperature of the circulating fluid according to the temperature of the circulating fluid detected by the first temperature sensor.
Wherein, the compressor is a variable-speed compressor.
The switching proportion of the first electronic expansion valve, the second electronic expansion valve, the third electronic expansion valve and the fourth electronic expansion valve is controllable; the first electronic expansion valve adjusts the switch proportion according to the temperature of the circulating fluid supplement liquid in the water tank detected by the second temperature sensor; the second electronic expansion valve adjusts the switch proportion according to the temperature of the high-temperature circulating fluid detected by the first temperature sensor; the third electronic expansion valve adjusts the switching ratio according to the compressor exhaust temperature detected by the third temperature sensor; and the fourth electronic expansion valve adjusts the switching ratio according to the pressure value of the refrigeration cycle system detected by the pressure sensor.
A use method of an air-cooled high-temperature heat exchange system with a controllable water tank temperature is characterized in that: the first electromagnetic valve and the second electromagnetic valve switch and adjust the temperature of the circulating fluid according to the temperature of the circulating fluid detected by the first temperature sensor;
when the high-temperature mode is operated, the first electromagnetic valve is opened, the second electromagnetic valve is closed, and the refrigeration cycle system controls whether to operate or not according to the temperature of circulating fluid supplement liquid in the water tank detected by the second temperature sensor; when the temperature of the circulating fluid supplement liquid is higher than a safety value, the first electronic expansion valve is opened, the refrigeration cycle system operates to cool the circulating fluid supplement liquid in the water tank, and the first electronic expansion valve adjusts the switch proportion according to the temperature of the circulating fluid supplement liquid in the water tank detected by the second temperature sensor; when the temperature of the circulating fluid supplement liquid is lower than a set value, the first electronic expansion valve is closed, and the refrigeration circulating system stops running;
when the refrigeration cycle operates in the medium-low temperature mode, the second electromagnetic valve is opened, the first electromagnetic valve is closed, the second electronic expansion valve is opened, the refrigeration cycle operates to control the temperature of the high-temperature circulating fluid, and the second electronic expansion valve adjusts the switching proportion according to the temperature of the high-temperature circulating fluid detected by the first temperature sensor;
the third electronic expansion valve adjusts the switch proportion according to the exhaust temperature of the compressor detected by the third temperature sensor, when the temperature exceeds a set value, the third electronic expansion valve is adjusted to be large, otherwise, the third electronic expansion valve is adjusted to be small; the fourth electronic expansion valve adjusts the switching proportion according to the pressure value of the refrigeration cycle system detected by the pressure sensor, and when the pressure exceeds a set value, the fourth electronic expansion valve is adjusted to be small, otherwise, the fourth electronic expansion valve is adjusted to be large;
when the refrigeration cycle system operates, the compressor is started, and the compressor adjusts the operating rotating speed of the compressor according to the temperature of the circulating fluid supplementary liquid in the water tank detected by the second temperature sensor and the temperature of the circulating fluid detected by the first temperature sensor.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: according to the air-cooled high-temperature heat exchange system with the controllable water tank temperature, the water tank cooling loop is added, the first evaporator is added in the water tank, cooling of circulating fluid supplement liquid in the water tank by refrigeration circulation is achieved, the temperature of the water tank is controlled, the influence of expansion caused by heat and contraction caused by cold of circulating liquid in the water tank on a circulating system is reduced, the phenomenon that the circulating liquid in the water tank is overfull or stops too little is avoided, and meanwhile, the risk that operators are scalded is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure, 1 is an electric heater, 2 is a water pump, 3 is a first temperature sensor, 4 is a water tank, 5 is a second temperature sensor, 6 is a first evaporator, 7 is a first electromagnetic valve, 8 is a second electromagnetic valve, 9 is a compressor, 10 is a condenser, 11 is a fan, 12 is a drying filter, 13 is a first electronic expansion valve, 14 is a second electronic expansion valve, 15 is a second evaporator, 16 is a third electronic expansion valve, 17 is a fourth electronic expansion valve, 18 is a third temperature sensor, and 19 is a pressure sensor.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and the detailed description, and it is obvious that the described embodiments are some, not all embodiments of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses an air-cooled high-temperature heat exchange system with a controllable water tank temperature, which is characterized in that: the high-temperature circulating fluid system comprises an electric heater 1, a water pump 2 and a first temperature sensor 3 which are sequentially connected, wherein the electric heater 1 is connected with a water tank 4, a second temperature sensor 5 is arranged in the water tank 4, and circulating fluid supplementing liquid in the water tank 4 and the refrigerating circulating system complete heat exchange through a first evaporator 6 to cool the circulating fluid supplementing liquid in the water tank 4; a first electromagnetic valve 7 is arranged in front of the electric heater 1; the refrigeration cycle system is sequentially provided with a compressor 9, a condenser 10, a drying filter 12, a first electronic expansion valve 13, a first evaporator 6, a second electronic expansion valve 14 and a second evaporator 15, the first electronic expansion valve 13 and the first evaporator 6 form a first refrigeration branch, the second electronic expansion valve 14 and the second evaporator 15 form a second refrigeration branch, the first refrigeration branch and the second refrigeration branch are arranged in parallel, and the first refrigeration branch and the second refrigeration branch are also arranged in parallel with a third electronic expansion valve 16; a circulating fluid branch consisting of a second evaporator 15 and a second electromagnetic valve 8 arranged on the liquid inlet side of the second evaporator 15 is connected in parallel with the first electromagnetic valve 7; the compressor 9 is arranged in parallel with the fourth electronic expansion valve 17, a pressure sensor 19 is arranged on an inlet pipeline of the compressor 9, and a third temperature sensor 18 is arranged on an outlet pipeline of the compressor 9; the condenser 10 comprises a fan 11, and the fan 11 is connected with a motor; the refrigeration circulation system performs heat exchange with the high-temperature circulation fluid system through the second evaporator 15 to cool the high-temperature circulation fluid. The first solenoid valve 7 and the second solenoid valve 8 switch and regulate the temperature of the circulating fluid according to the temperature of the circulating fluid detected by the first temperature sensor 3. The compressor 9 is a variable speed compressor. The switching ratios of the first electronic expansion valve 13, the second electronic expansion valve 14, the third electronic expansion valve 16 and the fourth electronic expansion valve 17 are controllable; the first electronic expansion valve 13 adjusts the switching ratio according to the temperature of the circulating fluid supplement liquid in the water tank 4 detected by the second temperature sensor 5; the second electronic expansion valve 14 adjusts the switch proportion according to the temperature of the high-temperature circulating fluid detected by the first temperature sensor 3; the third electronic expansion valve 16 adjusts the switching ratio according to the exhaust temperature of the compressor 9 detected by the third temperature sensor 18; the fourth electronic expansion valve 17 adjusts the switching ratio in accordance with the pressure value of the refrigeration cycle detected by the pressure sensor 19.
A method for using an air-cooled high-temperature heat exchange system with controllable water tank temperature is characterized in that a first electromagnetic valve 7 and a second electromagnetic valve 8 are switched to adjust the temperature of circulating fluid according to the temperature of the circulating fluid detected by a first temperature sensor 3;
when the high-temperature mode is operated, the first electromagnetic valve 7 is opened, the second electromagnetic valve 8 is closed, and the refrigeration cycle system controls whether to operate or not according to the temperature of the circulating fluid supplement liquid in the water tank 4 detected by the second temperature sensor 5; when the temperature of the circulating fluid supplement liquid is higher than a safety value, the first electronic expansion valve 13 is opened, the refrigeration cycle system operates to cool the circulating fluid supplement liquid in the water tank 4, and the first electronic expansion valve 13 adjusts the switching ratio according to the temperature of the circulating fluid supplement liquid in the water tank 4 detected by the second temperature sensor 5; when the temperature of the circulating fluid supplement liquid is lower than a set value, the first electronic expansion valve 13 is closed, and the refrigeration circulating system stops running;
when the refrigeration cycle operates in the medium-low temperature mode, the second electromagnetic valve 8 is opened, the first electromagnetic valve 7 is closed, the second electronic expansion valve 14 is opened, the refrigeration cycle operates to control the temperature of the high-temperature circulating fluid, and the second electronic expansion valve 14 adjusts the switching proportion according to the temperature of the high-temperature circulating fluid detected by the first temperature sensor 3;
the third electronic expansion valve 16 adjusts the switch proportion according to the exhaust temperature of the compressor 9 detected by the third temperature sensor 18, when the temperature exceeds a set value, the third electronic expansion valve 16 is adjusted to be large, otherwise, the third electronic expansion valve is adjusted to be small; the fourth electronic expansion valve 17 adjusts the switching ratio according to the pressure value of the refrigeration cycle system detected by the pressure sensor 19, when the pressure exceeds a set value, the fourth electronic expansion valve 17 is adjusted to be small, otherwise, the fourth electronic expansion valve is adjusted to be large;
when the refrigeration cycle system is operated, the compressor 9 is turned on, and the compressor 9 adjusts the operation speed of the compressor 9 according to the temperature of the circulating fluid supplement liquid in the water tank 4 detected by the second temperature sensor 5 and the temperature of the circulating fluid detected by the first temperature sensor 3.
According to the air-cooled high-temperature heat exchange system with the controllable water tank temperature, the cooling loop of the water tank 4 is added, the first evaporator 6 is added in the water tank 4, cooling of circulating fluid supplement liquid in the water tank 4 by refrigeration circulation is achieved, the temperature of the water tank 4 is controlled, the influence of expansion caused by heat and contraction caused by cold of circulating liquid in the water tank 4 on a circulating system is reduced, the phenomenon that the circulating liquid in the water tank 4 is overfull or stops too little is avoided, and meanwhile the risk that operators are scalded is reduced.
The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the same, and the above embodiments are detailed descriptions of the present invention, which should be understood by those of ordinary skill in the art; modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (5)
1. The utility model provides a controllable forced air cooling high temperature heat exchange system of water tank temperature which characterized in that: the high-temperature circulating fluid system comprises an electric heater (1), a water pump (2) and a first temperature sensor (3) which are sequentially connected, wherein the electric heater (1) is connected with a water tank (4), a second temperature sensor (5) is arranged in the water tank (4), and circulating fluid supplementing liquid in the water tank (4) and the refrigerating circulating system complete heat exchange through a first evaporator (6) to cool the circulating fluid supplementing liquid in the water tank (4); a first electromagnetic valve (7) is arranged in front of the electric heater (1);
the refrigeration cycle system is sequentially provided with a compressor (9), a condenser (10), a drying filter (12), a first electronic expansion valve (13), a first evaporator (6), a second electronic expansion valve (14) and a second evaporator (15), the first electronic expansion valve (13) and the first evaporator (6) form a first refrigeration branch, the second electronic expansion valve (14) and the second evaporator (15) form a second refrigeration branch, the first refrigeration branch and the second refrigeration branch are arranged in parallel, and the first refrigeration branch and the second refrigeration branch are also arranged in parallel with a third electronic expansion valve (16); the second evaporator (15) and a second electromagnetic valve (8) arranged on the liquid inlet side of the second evaporator (15) form a circulating fluid branch which is arranged in parallel with the first electromagnetic valve (7); the compressor (9) and the fourth electronic expansion valve (17) are arranged in parallel, an inlet pipeline of the compressor (9) is provided with a pressure sensor (19), and an outlet pipeline of the compressor (9) is provided with a third temperature sensor (18); the condenser (10) comprises a fan (11), and the fan (11) is connected with the motor; the refrigeration circulation system and the high-temperature circulation fluid system finish heat exchange through a second evaporator (15) to cool the high-temperature circulation fluid.
2. The air-cooled high-temperature heat exchange system with the temperature controllable water tank as claimed in claim 1, wherein: the first electromagnetic valve (7) and the second electromagnetic valve (8) are switched to adjust the temperature of the circulating fluid according to the temperature of the circulating fluid detected by the first temperature sensor (3).
3. The air-cooled high-temperature heat exchange system with the temperature controllable water tank as claimed in claim 1, wherein: the compressor (9) is a variable-speed compressor.
4. The air-cooled high-temperature heat exchange system with the temperature controllable water tank as claimed in claim 1, wherein: the switching proportion of the first electronic expansion valve (13), the second electronic expansion valve (14), the third electronic expansion valve (16) and the fourth electronic expansion valve (17) is controllable; the first electronic expansion valve (13) adjusts the switching ratio according to the temperature of the circulating fluid supplement liquid in the water tank (4) detected by the second temperature sensor (5); the second electronic expansion valve (14) adjusts the switching proportion according to the temperature of the high-temperature circulating fluid detected by the first temperature sensor (3); the third electronic expansion valve (16) adjusts the switching ratio according to the exhaust temperature of the compressor (9) detected by a third temperature sensor (18); and the fourth electronic expansion valve (17) adjusts the switching ratio according to the pressure value of the refrigeration cycle system detected by the pressure sensor (19).
5. A use method of an air-cooled high-temperature heat exchange system with a controllable water tank temperature is characterized in that: the first electromagnetic valve (7) and the second electromagnetic valve (8) switch and regulate the temperature of the circulating fluid according to the temperature of the circulating fluid detected by the first temperature sensor (3);
when the high-temperature mode is operated, the first electromagnetic valve (7) is opened, the second electromagnetic valve (8) is closed, and the refrigeration cycle system controls whether to operate or not according to the temperature of circulating fluid supplement liquid in the water tank (4) detected by the second temperature sensor (5); when the temperature of the circulating fluid supplement liquid is higher than a safety value, a first electronic expansion valve (13) is opened, a refrigeration cycle system operates to cool the circulating fluid supplement liquid in the water tank (4), and the first electronic expansion valve (13) adjusts the switching ratio according to the temperature of the circulating fluid supplement liquid in the water tank (4) detected by a second temperature sensor (5); when the temperature of the circulating fluid supplement liquid is lower than a set value, the first electronic expansion valve (13) is closed, and the refrigeration circulating system stops running;
when the refrigeration cycle operates in the medium-low temperature mode, the second electromagnetic valve (8) is opened, the first electromagnetic valve (7) is closed, the second electronic expansion valve (14) is opened, the refrigeration cycle operates to control the temperature of the high-temperature circulating fluid, and the second electronic expansion valve (14) adjusts the switching proportion according to the temperature of the high-temperature circulating fluid detected by the first temperature sensor (3);
the third electronic expansion valve (16) adjusts the switching proportion according to the exhaust temperature of the compressor (9) detected by the third temperature sensor (18), when the temperature exceeds a set value, the third electronic expansion valve (16) is adjusted to be large, otherwise, the third electronic expansion valve is adjusted to be small; the fourth electronic expansion valve (17) adjusts the switching proportion according to the pressure value of the refrigeration cycle system detected by the pressure sensor (19), when the pressure exceeds a set value, the fourth electronic expansion valve (17) is adjusted to be small, otherwise, the fourth electronic expansion valve is adjusted to be large;
when the refrigeration cycle system operates, the compressor (9) is started, and the compressor (9) adjusts the operating speed of the compressor (9) according to the temperature of the circulating fluid supplement liquid in the water tank (4) detected by the second temperature sensor (5) and the temperature of the circulating fluid detected by the first temperature sensor (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911105742.XA CN110793201A (en) | 2019-11-13 | 2019-11-13 | Air-cooled high-temperature heat exchange system with controllable water tank temperature and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911105742.XA CN110793201A (en) | 2019-11-13 | 2019-11-13 | Air-cooled high-temperature heat exchange system with controllable water tank temperature and use method thereof |
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| CN110793201A true CN110793201A (en) | 2020-02-14 |
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| CN201911105742.XA Pending CN110793201A (en) | 2019-11-13 | 2019-11-13 | Air-cooled high-temperature heat exchange system with controllable water tank temperature and use method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112306116A (en) * | 2020-10-29 | 2021-02-02 | 北京京仪自动化装备技术有限公司 | Semiconductor temperature control system |
| CN112378113A (en) * | 2020-10-29 | 2021-02-19 | 北京京仪自动化装备技术有限公司 | Semiconductor temperature control device and method |
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| CN102721225A (en) * | 2012-07-09 | 2012-10-10 | 西华大学 | High-temperature heat pump and using method thereof |
| CN107843023A (en) * | 2017-10-17 | 2018-03-27 | 天津城建大学 | A kind of refrigerating machine device |
| CN107990610A (en) * | 2018-01-18 | 2018-05-04 | 河南中瑞制冷科技有限公司 | A kind of industry water temperature double-control system |
| WO2019171632A1 (en) * | 2018-03-06 | 2019-09-12 | 栗田工業株式会社 | Method for heating ultra-pure water |
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| CN101178275A (en) * | 2007-12-05 | 2008-05-14 | 阿尔西制冷工程技术（北京）有限公司 | Refrigerating unit using electronic expansion valve to control temperature |
| CN102721225A (en) * | 2012-07-09 | 2012-10-10 | 西华大学 | High-temperature heat pump and using method thereof |
| CN107843023A (en) * | 2017-10-17 | 2018-03-27 | 天津城建大学 | A kind of refrigerating machine device |
| CN107990610A (en) * | 2018-01-18 | 2018-05-04 | 河南中瑞制冷科技有限公司 | A kind of industry water temperature double-control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112306116A (en) * | 2020-10-29 | 2021-02-02 | 北京京仪自动化装备技术有限公司 | Semiconductor temperature control system |
| CN112378113A (en) * | 2020-10-29 | 2021-02-19 | 北京京仪自动化装备技术有限公司 | Semiconductor temperature control device and method |
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Application publication date: 20200214 |
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