Double-water-tank accurate temperature control liquid cooling source and control method thereof

Abstract

The invention relates to the technical field of liquid cooling sources, in particular to a double-water-tank accurate temperature control liquid cooling source and a control method thereof. The liquid cooling source comprises a cooling circulation system, a double-water-tank control system and a liquid supply system. The cooling circulation system is provided with a forced cooling branch and a compression refrigeration branch which are arranged in parallel and can operate independently; the double-water-tank control system comprises a cold water tank, a hot water tank and a heating system. The cold water tank and the hot water tank are communicated with each other and provided with a plurality of independent fluid inlet and outlet channels. And the cooling circulation system is communicated with the cold water tank. One path of the cold water tank and one path of the hot water tank are combined to form an outlet, the outlet end is communicated with the inlet end of liquid-to-be-supplied equipment, and the outlet end of the liquid-to-be-supplied equipment is communicated with the hot water tank. Compared with other liquid cooling sources, the liquid cooling source provided by the invention is simple and reliable in design, higher in control precision and quicker in response, and can meet the requirements on temperature control precision in different working environments.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cooling sources, and in particular to a double-water-tank precise temperature-controlled liquid cooling source and a control method thereof. Background Art

[0002] Liquid cooling source is a highly efficient cooling and heat dissipation device. It uses liquid as a heat transfer medium and controls the flow and circulation of liquid at a certain temperature and flow rate to achieve cooling of heating equipment or systems. The precise temperature control of the liquid cooling source can ensure that the cooled equipment or system operates within the optimal operating temperature range, improve the operating performance, stability, energy efficiency and reliability of the equipment or system, and at the same time extend the service life and reduce the cost of use.

[0003] Liquid cooling sources are usually composed of a circulating liquid supply system (water pump, water tank, pipeline, valve, etc.), a control system (control panel, sensor, etc.) and a refrigeration system (compressor, evaporator, condenser, fan, etc.). At present, liquid cooling sources mainly control the temperature of the coolant by adjusting the operating parameters of the refrigeration unit, starting and stopping the fixed-frequency compressor, controlling the compressor power with a variable-frequency compressor, adding valves or branches to control the refrigerant flow, and controlling the fan speed to control the fan heat dissipation air volume, etc., to meet the use requirements. However, the control system of the above means is relatively complex, with low accuracy, delayed response, and high use and maintenance costs. Summary of the invention

[0004] In view of the problem that the existing liquid cooling source temperature control technology has complex design and low precision, the present invention proposes a double-water tank precise temperature control liquid cooling source and a control method thereof, which has the technical effects of being simple and reliable, having higher control precision and rapid response.

[0005] The present invention proposes a double-tank precise temperature-controlled liquid cooling source, including a cooling circulation system, a double-tank control system, and a liquid supply system; the cooling circulation system includes a forced cooling branch and a compression refrigeration branch, which are arranged in parallel and can operate independently; the double-tank control system includes a cold water tank, a hot water tank, and a heating system; the cold water tank and the hot water tank are connected to each other, and at the same time, a number of independent fluid inlet and outlet channels are arranged on both sides; the inlet and outlet ends of the forced cooling branch and the compression refrigeration branch are both connected to the cold water tank; the cold water tank and the hot water tank are combined to form an outlet, and the fluid at the outlet end is a mixture of the cold and hot fluids in the cold water tank and the hot water tank; the liquid supply system, its inlet end is connected to the outlet end of the cold and hot water tanks; its outlet end is connected to the inlet end of the device to be supplied with liquid, and the outlet end of the device to be supplied with liquid is connected to the hot water tank. In one embodiment, the hot water tank and the cold water tank are combined to form an outlet through a three-way valve, and the three-way valve is a flow ratio regulating valve, and the fluid at the outlet end of the three-way valve is a mixture of cold and hot fluids.

[0006] Furthermore, the heating system includes a first electric heater and a second electric heater, the first electric heater is provided in the cold water tank, and the second electric heater is provided in the hot water tank.

[0007] Furthermore, a first solenoid valve is installed at the inlet end of the compression refrigeration branch, and a second solenoid valve is provided at the inlet end of the forced cooling branch; when the first solenoid valve is opened, the compression refrigeration branch is connected, and when it is closed, it is blocked; when the second solenoid valve is opened, the forced cooling branch is connected, and when it is closed, it is blocked.

[0008] Further, the opening states of the first solenoid valve and the second solenoid valve are opposite.

[0009] Furthermore, the dual water tank control system also has a three-way proportional valve, and two inlet ends of the three-way proportional valve are respectively connected to the cold water tank and the hot water tank.

[0010] Furthermore, a second electric valve and a first temperature sensor are provided between the cold water tank and the three-way proportional valve; a third electric valve and a first temperature sensor are provided between the hot water tank and the three-way proportional valve.

[0011] Furthermore, the liquid supply system is provided with a first water pump, whose inlet end is connected to the outlet end of the three-way proportional valve, and whose outlet end is connected to the inlet end of the device to be supplied with liquid.

[0012] Furthermore, a fourth temperature sensor is provided at the outlet end of the first water pump.

[0013] The present invention also proposes a control method for any of the above-mentioned double-tank precise temperature-controlled liquid cooling sources, and the technical solution includes:

[0014] The temperature information of the liquid cooling source is collected, and a compression cooling branch, a forced cooling branch or a heating system is turned on according to the information; wherein the compression cooling branch and the forced cooling branch cool the fluid in the cold water tank.

[0015] Furthermore, the conditions for opening the compression refrigeration branch include: collecting temperature information of the liquid cooling source, including temperature information of the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor; when the temperature information collected by the fourth temperature sensor is higher than the set liquid supply temperature or the temperature information collected by the fourth temperature sensor is lower than the set liquid supply temperature and the difference is less than a certain value, and the temperature value collected by the first temperature sensor is greater than the set liquid supply temperature, the liquid cooling source opens the compression refrigeration branch.

[0016] Furthermore, the opening condition of the forced cooling branch includes: collecting temperature information of the liquid cooling source, including temperature information of the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor; when the temperature information collected by the fourth temperature sensor is lower than the set liquid supply temperature and the difference is greater than a certain value and the temperature value collected by the first temperature sensor is greater than the set liquid supply temperature,

[0017] Furthermore, the start-up conditions of the heating system include collecting temperature information of a liquid cooling source, including a first temperature sensor, a second temperature sensor, and a third temperature sensor; when the temperature values ​​collected by the first temperature sensor and the second temperature sensor are less than the set liquid supply temperature, the liquid cooling source starts the heating system.

[0018] Compared with the prior art, the above-mentioned dual-tank precise temperature control liquid cooling source has the technical effects of being simple and reliable, having higher control accuracy and rapid response, and the accuracy can reach the accuracy of the selected temperature sensor, and respond in real time. In addition, the above-mentioned dual-tank precise temperature control liquid cooling source has multiple working modes, which can adapt to the requirements of temperature control accuracy in different working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a dual-tank precise temperature-controlled liquid cooling source provided in some embodiments of the present invention.

[0020] Figure 2 A schematic structural diagram of a dual-tank precise temperature-controlled liquid cooling source provided in some embodiments of the present invention.

[0021] Among them: 1. First water tank; 2. Second water tank; 3. First electric heater; 4. Second electric heater; 5. First drain valve; 6. First electric valve; 7. Second electric valve; 8. First temperature sensor; 9. Second temperature sensor; 10. Three-way proportional valve; 11. Third electric valve; 12. First drain valve; 13. First water pump; 14. Third temperature sensor; 15. Second water pump; 16. First check valve; 17. Second check valve; 18. Plate heat exchanger; 19. First solenoid valve; 20. Second solenoid valve; 21. Thermal expansion valve; 22. Third solenoid valve; 23. Compressor; 24. First heat exchanger; 25. Second heat exchanger; 26. Fan; 27. Fourth temperature sensor; 100. Cooling circulation system; 101. Forced cooling system; 102. Compression refrigeration branch; 200. Double water tank control system; 201. Cold water tank; 202. Hot water tank; 300. Liquid supply system; 400. Equipment to be supplied with liquid. DETAILED DESCRIPTION

[0022] like Figure 1As shown, an embodiment of the present invention provides a dual-tank precise temperature control liquid cooling source, which includes a cooling circulation system 100, a dual-tank control system 200, and a liquid supply system 300. The cooling circulation system 100 includes a forced cooling system 101 and a compression refrigeration branch 102, both of which can operate independently; the dual-tank cooling system includes a cold water tank 201, a hot water tank 202, and a heating system 203. The cold water tank 201 is used to store the cooled fluid, the hot water tank 202 is used to store the fluid flowing through the heating device, and the heating system 203 is used to heat the liquid in the two water tanks; the two water tanks are connected to each other, and both are provided with a number of independent fluid inlet and outlet channels. The cooling circulation system 100 is connected to the cold water tank 201 in the dual-tank control system. Preferably, the cold water tank 201 and the hot water tank 202 have a path that is merged to form an outlet, and the fluid at the outlet end is a mixture of the cold and hot fluids in the cold water tank 201 and the hot water tank 202. The liquid supply system 300 is used to deliver fluid of a certain flow rate and temperature to the liquid supply device 400. Its inlet end is connected to the cold water tank 201 and the hot water tank 202 in the dual water tank control system 200 and its outlet end is connected. Its outlet end is connected to the inlet end of the liquid supply device 400, and the outlet end of the liquid supply device 400 is connected to the hot water tank 202.

[0023] For ease of explanation, the cold water tank 201 and the hot water tank 202 below have stored sufficient liquid.

[0024] like Figure 1 As shown, when the liquid supply device 400 needs liquid supply, the liquid cooling source liquid supply system 300 is operated. The liquid cooling source operates the forced cooling system 101, the compression refrigeration branch 102 and the heating system 203 according to the collected information and needs, and the three systems will operate independently according to the needs. The dual water tank control system adjusts the mixing ratio of the fluid in the cold water tank 201 and the hot water tank 202 according to the temperature and flow requirements.

[0025] When the liquid supply device 400 does not need liquid supply, the forced cooling system 101, the compression refrigeration branch 102 and the heating system 203 will also operate independently according to the temperature requirements of the subsequent liquid supply to ensure that the use requirements of the liquid supply device are met when the liquid supply system 300 is running.

[0026] like Figure 2As shown, in some embodiments, the cold water tank 201 is composed of a first water tank 1, a first liquid discharge valve 5, a second electric valve 7, and a first temperature sensor 8, and the hot water tank 202 is composed of a second water tank 2, a second liquid discharge valve 12, a second electric valve 11, and a first temperature sensor 9. The first liquid discharge valve 5 is used to discharge the liquid in the first water tank; the second liquid discharge valve 12 is used to discharge the liquid in the second water tank; the second electric valve 7 is arranged at the outlet of the first water tank 1 and connected to one inlet of the three-way proportional valve 10, and the first temperature sensor 8 is arranged between the two to measure the outlet temperature of the first water tank 1; the second electric valve 11 is arranged at the outlet of the first water tank 2 and connected to the other inlet of the three-way proportional valve 10, and the first temperature sensor 9 is arranged between the two to measure the outlet temperature of the first water tank 2. The cold water tank 201 is provided with an electric heater 1, and the hot water tank 202 is provided with an electric heater 2.

[0027] In some embodiments, the liquid supply system 300 is composed of a first water pump 13, a first electric valve 6 and a third temperature sensor 14. The first water pump 13 is a power source for liquid delivery, and its inlet is connected to the outlet of the three-way proportional valve 10. The first electric valve is used to adjust the flow of the liquid supply system, and its two ends are connected to the outlet of the second water tank 2 and the water pump 13. When the flow demand of the liquid supply equipment 400 decreases, the opening is increased; otherwise, the opening is reduced. The third temperature sensor 14 is used to measure the temperature after the cold and hot fluids are mixed. The opening of the three-way proportional valve 10 is roughly adjusted by the first temperature sensor 8, the second temperature sensor 9 and the set temperature value. Preferably, the second electric valve 7 and the third electric valve 11 are fine-tuned according to the temperature data measured by the third temperature sensor and the set temperature value.

[0028] In some embodiments, the circulating refrigeration system comprises a second water pump 15, a first one-way valve 16, a second one-way valve 17, a plate heat exchanger 18, a first solenoid valve 19, a second solenoid valve 20, a thermal expansion valve 21, a third solenoid valve 22, a compressor 23, a first heat exchanger 24, a second heat exchanger 25, a fan 26 and a fourth temperature sensor 27. The fourth temperature sensor is used to measure the ambient temperature.

[0029] Preferably, in the circulating cooling system 200, a first solenoid valve 19 is provided in the compression refrigeration branch, and a second solenoid valve 20 is provided in the forced cooling branch. Furthermore, the opening states of the two are opposite. Exemplarily, when the set temperature value is greater than the temperature collected by the fourth temperature sensor plus 5°C, the first solenoid valve 19 is closed, the first solenoid valve 20 is opened, and the forced cooling branch is opened; when the set temperature value is less than or equal to the temperature collected by the fourth temperature sensor plus 5°C, the first solenoid valve 19 is closed, the first solenoid valve 20 is opened, and the compression cooling branch is opened; when the temperature value collected by the first temperature sensor 8 and the temperature value collected by the second temperature sensor 9 are both less than the set temperature value, the heating system is started.

[0030] Preferably, when the forced cooling branch, the compression cooling branch or the heating system is turned on and the system is running stably, it is ensured that the temperature value collected by the first temperature sensor 8 is less than the set temperature value, and the temperature value collected by the second temperature sensor 9 is greater than the set temperature value.

[0031] In addition, if the temperature drop rate collected by the first temperature sensor is too fast, the third solenoid valve 22 is opened to bypass part of the cooling capacity, and the first electric heater 3 and the second electric heater 4 can also be opened to ensure the stability of the system temperature.

[0032] In this document, the terms "first", "second", "third", etc. are used to define devices. Those skilled in the art should know that the terms "first", "second", "third", etc. are used only to distinguish devices for the convenience of description. Unless otherwise stated, the above terms have no special meanings.

Claims

1. A double-tank precise temperature-controlled liquid cooling source, characterized in that: The invention comprises a cooling circulation system (100), a dual water tank control system (200), and a liquid supply system (300); the cooling circulation system (100) comprises a forced cooling branch (101) and a compression refrigeration branch (102), which are arranged in parallel and can operate independently; the dual water tank control system (200) comprises a cold water tank (201), a hot water tank (202), and a heating system (203); the cold water tank (201) and the hot water tank (202) are connected to each other, and at the same time Both are provided with a plurality of independent fluid inlet and outlet channels; the inlet and outlet ends of the forced cooling branch (101) and the compression refrigeration branch (102) are both connected to the cold water tank (201); the cold water tank (201) and the hot water tank (202) are combined to form an outlet, and the fluid at the outlet end is a mixture of the cold and hot fluids in the cold water tank (201) and the hot water tank (202); the inlet end of the liquid supply system (300) is connected to the combined outlet end of the cold and hot water tanks; Its outlet end is connected to the inlet end of the liquid supply device (400), and the outlet end of the liquid supply device (400) is connected to the hot water tank (202).

2. A double-tank precise temperature-controlled liquid cooling source according to claim 1, characterized in that: The heating system (203) comprises a first electric heater (3) and a second electric heater (4); the first electric heater (3) is provided in the cold water tank (201); and the second electric heater (4) is provided in the hot water tank (201).

3. A double-tank precise temperature-controlled liquid cooling source according to claim 1, characterized in that: A first solenoid valve (19) is installed at the inlet end of the compression refrigeration branch (101), and a second solenoid valve (20) is installed at the inlet end of the forced cooling branch (102); when the first solenoid valve (19) is opened, the compression refrigeration branch (101) is connected, and when it is closed, it is blocked; when the second solenoid valve (20) is opened, the forced cooling branch (102) is connected, and when it is closed, it is blocked.

4. A double-tank precise temperature-controlled liquid cooling source according to claim 3, characterized in that: The opening states of the first solenoid valve (19) and the first solenoid valve (20) are opposite.

5. The double-tank precise temperature-controlled liquid cooling source according to claim 1, characterized in that: The dual water tank control system (200) further comprises a three-way proportional valve (10), and two inlet ends of the three-way proportional valve (10) are respectively connected to the cold water tank (201) and the hot water tank (202).

6. A double-tank precise temperature-controlled liquid cooling source according to claim 5, characterized in that: A second electric valve (7) and a first temperature sensor (8) are provided between the cold water tank (201) and the three-way proportional valve (10); and a third electric valve (11) and a first temperature sensor (9) are provided between the hot water tank (202) and the three-way proportional valve (10).

7. A double-tank precise temperature-controlled liquid cooling source according to claim 1 or claim 5, characterized in that: The liquid supply system (300) is provided with a first water pump (13), the inlet end of which is connected to the outlet end of the three-way proportional valve (10), and the outlet end of which is connected to the inlet end of the device to be supplied with liquid (400).

8. A double-tank precise temperature-controlled liquid cooling source according to claim 7, characterized in that: A fourth temperature sensor (14) is provided at the outlet end of the first water pump (13).

9. A control method for a double-tank precise temperature-controlled liquid cooling source as claimed in any one of claims 1 to 8, characterized in that: The temperature information of the liquid cooling source is collected, and the compression cooling branch (102), the forced cooling branch (101) or the heating system (203) is turned on according to the information; wherein the compression cooling branch (102) and the forced cooling branch (101) cool the fluid in the cold water tank (201).

10. The control method of the double-tank precise temperature-controlled liquid cooling source according to claim 9, characterized in that: The opening condition of the compression refrigeration branch (102) includes: collecting temperature information of a liquid cooling source, including temperature information of a first temperature sensor (8), a second temperature sensor (9), a third temperature sensor (14) and a fourth temperature sensor (27); when the temperature information collected by the fourth temperature sensor (27) is higher than a set liquid supply temperature or the temperature information collected by the fourth temperature sensor (27) is lower than the set liquid supply temperature and the difference is less than a certain value, and the temperature value collected by the first temperature sensor (8) is greater than the set liquid supply temperature, the liquid cooling source opens the compression refrigeration branch (102).

11. The control method of the double-tank precise temperature-controlled liquid cooling source according to claim 9, characterized in that: The opening condition of the forced cooling branch (101) comprises: collecting temperature information of a liquid cooling source, including temperature information of a first temperature sensor (8), a second temperature sensor (9), a third temperature sensor (14) and a fourth temperature sensor (27); when the temperature information collected by the fourth temperature sensor (27) is lower than a set liquid supply temperature and the difference is greater than a certain value and the temperature value collected by the first temperature sensor (8) is greater than the set liquid supply temperature.

12. The control method of the double-tank precise temperature-controlled liquid cooling source according to claim 9, characterized in that: The start-up condition of the heating system (203) includes collecting temperature information of a liquid cooling source, including a first temperature sensor (8), a second temperature sensor (9), and a third temperature sensor (14); when the temperature values ​​collected by the first temperature sensor (8) and the second temperature sensor (9) are less than a set liquid supply temperature, the liquid cooling source starts the heating system.

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