Temperature control system

Abstract

A temperature control system, comprising a first heat exchanger, a second heat exchanger, a first bypass branch and a first valve, wherein a first interface of the first heat exchanger is in communication with a first interface of the second heat exchanger; an inlet of the first bypass branch is connected to the first interface of the first heat exchanger, and an outlet of the first bypass branch is in communication with a second interface of the second heat exchanger, such that a heat exchange medium of the first bypass branch and a heat exchange medium of the second interface of the second heat exchanger are mixed into a mixed-temperature heat exchange medium, and the mixed-temperature heat exchange medium flows into the second interface of the first heat exchanger; and the first valve can be used for adjusting the flow of the heat exchange medium of the first bypass branch. By means of the temperature control system, a first bypass branch is introduced so as to perform high-precision fine tuning on temperature, such that full use is made of heat which is wasted by a high-temperature heat exchange medium, thereby reducing a loss of the whole system, and facilitating energy saving.

Description

[0001] The present application claims the priority to Chinese Patent Application No. 202310789982.6, titled "TEMPERATURE CONTROL SYSTEM", filed on June 28, 2023 with the China National Intellectual Property Administration, which is incorporated herein by reference in its entirety.FIELD

[0002] The present application relates to the technical field of temperature control, and in particular to a temperature control system.BACKGROUND

[0003] In terms of the existing high-precision temperature-controlled cooling field, such as high-precision temperature-controlled air conditioning cooling systems, reference is made to FIG. 1. A first port of a first heat exchanger 01 is connected to a first port of a second heat exchanger 02. A second port of a second heat exchanger 02 is connected to a second port of the first heat exchanger 01 via a heater 03 and a thermal buffer 04 in turn. The first heat exchanger 01 is configured as a terminal heat exchanger. After exchanging heat with the apparatus, the temperature of the heat exchange medium inside the first heat exchanger 01 rises. The high-temperature heat exchange medium then flows back to the second heat exchanger 02, where it is re-cooled. After passing through the heater 03 and the thermal buffer 04, it flows into the first heat exchanger 01 again to cool the external environment or the apparatus.

[0004] Temperature compensation in this cooling system is achieved by the heater, which is typically an electric heating wire. That is, when the temperature approaches the critical desired temperature, the heat exchange medium is electrically heated by the heater to quickly achieve the target temperature with minimal fluctuations. However, since the heater is a power-consuming component, adopting the heater for temperature compensation increases the losses of the overall system, which leads to an increase in Power Usage Effectiveness (PUE) and is not conducive to energy conservation.

[0005] In summary, how to achieve temperature compensation without a heater so as to address the issue of high energy consumption of the cooling system is a challenge that needs to be solved by those skilled in the art at present.SUMMARY

[0006] In view of this, an object of the present application is to provide a temperature control system, and a structural design of its system loop enables temperature compensation without a heater, thereby addressing the issue of high energy consumption in cooling systems.

[0007] To achieve the above object, the following technical solutions are provided according to the present application.

[0008] A temperature control system, applied to an apparatus with high-precision heat dissipation requirements, includes: a first heat exchanger, a second heat exchanger, a first bypass branch line, and a first valve.

[0009] A first port of the first heat exchanger is in communication with a first port of the second heat exchanger.

[0010] An inlet of the first bypass branch line is connected to the first port of the first heat exchanger, and an outlet of the first bypass branch line is in communication with a second port of the second heat exchanger, so that a heat exchange medium flowing out of the first bypass branch line is mixed with a heat exchange medium flowing out of the second port of the second heat exchanger to form a mixed-temperature heat exchange medium, which then flows into a second port of the first heat exchanger.

[0011] The first valve may be configured to regulate a flow rate of the heat exchange medium in the first bypass branch line so as to adjust a temperature of the mixed-temperature heat exchange medium until a temperature difference between the temperature of the mixed-temperature heat exchange medium and a preset target heat exchange medium temperature is within a range of -0.3°C to 0.3°C.

[0012] Optionally, the temperature control system described above further includes: a first temperature sensor for detecting the temperature of the mixed-temperature heat exchange medium, and a controller. The controller is configured to control an opening degree of the first valve based on a detected value from the first temperature sensor, so as to regulate the flow rate of the heat exchange medium in the first bypass branch line by controlling the opening degree of the first valve, ensuring that the flow rate of the heat exchange medium in the first bypass branch line is 0.1% to 10% of the flow rate of the heat exchange medium at the second port of the second heat exchanger.

[0013] Optionally, the temperature control system described above further includes a second temperature sensor for detecting the temperature of the heat exchange medium at the second port of the second heat exchanger. The controller is further configured to control the opening degree of the first valve based on a detected value from the second temperature sensor.

[0014] Optionally, the temperature control system described above further includes a first flow sensor for detecting the flow rate of a working medium in the first bypass branch line. The controller is further configured to control the opening degree of the first valve based on a detected value from the first flow sensor.

[0015] Optionally, the temperature control system described above further includes a second flow sensor arranged at the first port of the first heat exchanger. The second flow sensor is configured to detect the flow rate of the heat exchange medium at the first port of the first heat exchanger, and the controller is further configured to control the opening degree of the first valve based on a detected value from the second flow sensor.

[0016] Optionally, in the temperature control system described above, an accuracy of each of the first temperature sensor and the second temperature sensor is within ±0.3°C, an accuracy of the first valve is within 1%, and an accuracy of each of the first flow sensor and the second flow sensor is within 1%.

[0017] Optionally, the temperature control system described above further includes a third temperature sensor or a first pressure sensor arranged at the first port of the first heat exchanger, and / or a fourth temperature sensor or a second pressure sensor arranged at the second port of the first heat exchanger. The third temperature sensor or the first pressure sensor is configured to detect the temperature or pressure of the heat exchange medium at the first port of the first heat exchanger. The fourth temperature sensor or the second pressure sensor is configured to detect the temperature or pressure of the heat exchange medium at the second port of the first heat exchanger. The controller is further configured to adjust the preset target heat exchange medium temperature at the second port of the first heat exchanger based on the temperature or pressure of the heat exchange medium at the second port of the first heat exchanger, and / or the temperature or pressure of the heat exchange medium at the first port of the first heat exchanger.

[0018] Optionally, the temperature control system described above further includes a mixer, which is configured to mix the heat exchange medium coming from the first bypass branch line with the heat exchange medium coming from the second port of the second heat exchanger to form a mixed-temperature heat exchange medium. The mixer is connected to an outlet of the first bypass branch line and the second port of the second heat exchanger. At least one baffle component 41 is arranged within the mixer, and there is a gap formed between the at least one baffle component and an inner wall of the mixer.

[0019] Optionally, the temperature control system described above further includes a thermal buffer, which is connected between the second port of the first heat exchanger and an outlet of the mixer. A heater is arranged between the thermal buffer and the mixer to regulate the temperature of the mixed-temperature heat exchange medium. A driving pump is arranged between the heater and the mixer, and a water tank is arranged between the driving pump and the mixer to store the mixed-temperature heat exchange medium.

[0020] Optionally, the temperature control system described above further includes a second bypass branch line that is connected to the first port and the second port of the first heat exchanger. The second bypass branch line is configured to bypass a portion of the working medium coming from the first port of the first heat exchanger to the second port of the first heat exchanger. Moreover, a second valve is arranged in the second bypass branch line.

[0021] The temperature control system provided according to the present application includes a first heat exchanger, a second heat exchanger, a first bypass branch line, and a first valve. A first port of the first heat exchanger is in communication with a first port of the second heat exchanger. An inlet of the first bypass branch line is connected to the first port of the first heat exchanger, and an outlet of the first bypass branch line is in communication with a second port of the second heat exchanger. This enables the heat exchange medium coming from the first bypass branch line to mix with the heat exchange medium coming from the second port of the second heat exchanger to form a mixed-temperature heat exchange medium, which then flows into a second port of the first heat exchanger. The first valve may be configured to regulate the flow rate of the heat exchange medium in the first bypass branch line to adjust the temperature of the mixed-temperature heat exchange medium until the temperature difference between the temperature of the mixed-temperature heat exchange medium and the preset target heat exchange medium temperature is within the range of -0.3°C to 0.3°C.

[0022] When applying the temperature control system provided according to the present application, the high-temperature heat exchange medium flowing out of the first port of the first heat exchanger passes through the second heat exchanger for cooling, thereby reaching a temperature that is close to but slightly lower than a target cooling temperature. Through the first bypass branch line, a portion of the high-temperature heat exchange medium coming from the first port of the first heat exchanger is conveyed to the first port of the second heat exchanger and mixed with the heat exchange medium coming from it. The flow rate in the first bypass branch line is usually relatively small, enabling high-precision fine-tuning of the temperature. The adjusted mixed-temperature heat exchange medium is then conveyed to the second port of the first heat exchanger. After absorbing heat from a component or an environment that requires cooling at the first heat exchanger, the high-temperature heat exchange medium flows out of the first port, forming a circulation loop. In summary, for the temperature control system provided according to the present application, by introducing the first bypass branch line, the heat from the high-temperature heat exchange medium that would otherwise be wasted in electrical heating is fully utilized. It can achieve temperature compensation without a heater, reducing the losses of the entire system and facilitating energy conservation.BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate technical solutions in the embodiments of the present application or in the conventional technology, drawings required for describing the embodiments or the conventional technology are briefly de scribed hereinafter. Apparently, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained based on the provided drawings without any creative efforts. FIG. 1 is a schematic structural view of a temperature control system in the conventional technology; FIG. 2 is a schematic structural view of a temperature control system according to a specific embodiment of the present application; FIG. 3 is a schematic connection view of a first valve; FIG. 4 is another schematic connection view of a first valve; FIG. 5 is a schematic structural view of a temperature control system according to another specific embodiment of the present application; FIG. 6 is a schematic view of an external circuit of a second heat exchanger; and FIG. 7 is a schematic structural view of a temperature control system according to yet another specific embodiment of the present application.

[0024] Reference numerals in the drawings are as follows: 1 first heat exchanger, 2 second heat exchanger, A inlet of first bypass branch line, B outlet of first bypass branch line, 3 first valve, 4 mixer, 41 baffle component, 5 thermal buffer, 6 compressor cooling circuit, 61 expansion valve, 62 bypass valve, 63 compressor, 7 cooling water cooling circuit, 71 third heat exchanger, 8 second valve, 9 driving pump, 10 water tank, 11 heater.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] A temperature control system is provided according to an embodiment of the present application, which is configured to allocate waste heat through flow rate adjustment, thereby achieving temperature compensation and reducing energy consumption associated with the temperature compensation.

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. It is apparent that the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative work fall within the protection scope of the present application.

[0027] A temperature control system is provided according to the present application, which is applied to an apparatus with high-precision heat dissipation requirements. By introducing a first bypass branch line, a portion of a high-temperature heat exchange medium coming from a first heat exchanger 1 is directed to an outlet of a second heat exchanger 2, utilizing the wasted heat from the high-temperature heat exchange medium to achieve fine-tuning of the outlet temperature. The configuration of the main cooling loop formed by the first heat exchanger 1 and the second heat exchanger 2 may refer to the structure of the conventional cooling system. It should be noted that in this embodiment, "high precision" refers to a desired temperature control accuracy with a deviation value within ±0.3°C from the target temperature.

[0028] Reference is made to FIG. 2, which is a schematic structural view of a temperature control system according to a specific embodiment of the present application.

[0029] In an embodiment, the temperature control system provided according to the present application includes a first heat exchanger 1, a second heat exchanger 2, a first bypass branch line, and a first valve 3. The first heat exchanger 1 is configured as a terminal heat exchanger for exchanging heat with a component or an environment that requires cooling. The second heat exchanger 2 is configured to cool the high-temperature heat exchange medium flowing out of the first heat exchanger 1. It is understood that the heat exchange medium includes, but is not limited to, coolants such as cooling water, and fluids such as gases may also be used as required. A first port of the first heat exchanger 1 is in communication with a first port of the second heat exchanger 2, and a second port of the second heat exchanger 2 is in communication with the first port of the first heat exchanger 1. The first port of the first heat exchanger 1 serves as a water return port of the temperature control system, and the second port of the first heat exchanger 1 functions as a water outlet port of the temperature control system. The heat exchange medium with high-precision temperature control coming from the water outlet port of the temperature control system is provided via the first heat exchanger 1 to a component that requires cooling. The heat exchange medium at the water return port of the temperature control system exchanges heat with the component or environment that requires cooling at the first heat exchanger 1. After absorbing the heat from the component or environment, the heat exchange medium then flows through the second heat exchanger 2 for cooling. Moreover, an inlet A of the first bypass branch line is connected to the first port of the first heat exchanger 1, and an outlet B of the first bypass branch line is connected to the second port of the second heat exchanger 2. This enables the heat exchange medium coming from the first bypass branch line to be mixed with the heat exchange medium coming from the second port of the second heat exchanger 2 to form a mixed-temperature heat exchange medium, which then flows into the second port of the first heat exchanger 1. The first valve 3 is configured to regulate the flow rate of the heat exchange medium in the first bypass branch line to adjust the temperature of the mixed-temperature heat exchange medium until the temperature difference between the temperature of the mixed-temperature heat exchange medium and a preset target heat exchange medium temperature is within the range of -0.3°C to 0.3°C. The preset target heat exchange medium temperature may specifically refer to the target temperature of the heat exchange medium at the second port of the first heat exchanger 1. The first valve 3 is specifically located in the first bypass branch line.

[0030] When applying the temperature control system provided according to the present application, the high-temperature heat exchange medium coming from the first port of the first heat exchanger 1 flows through the second heat exchanger 2 for cooling, thereby reaching a temperature that is close to but slightly lower than the target cooling temperature. Through the first bypass branch line, a portion of the high-temperature heat exchange medium coming from the first port of the first heat exchanger 1 is conveyed to the first port of the second heat exchanger 2 and mixed with the heat exchange medium coming from it. The flow rate in the first bypass branch line is usually small, thereby achieving high-precision fine-tuning of the temperature. The adjusted mixed-temperature heat exchange medium is then conveyed to the second port of the first heat exchanger 1. After absorbing heat from a component or an environment that requires cooling at the first heat exchanger 1, the high-temperature heat exchange medium flows out of the first port, thereby forming a circulation loop. In summary, for the temperature control system provided according to the present application, by introducing the first bypass branch line, the wasted heat from the high-temperature heat exchange medium is fully utilized, and achieves temperature compensation without a heater, reducing the losses of the entire system and facilitating energy conservation.

[0031] In an embodiment, the flow rate at the outlet B of the first bypass branch line does not exceed the flow rate at the second port of the second heat exchanger 2. Specifically, the flow rate of the heat exchange medium in the first bypass branch line is 0.1% to 10% of the flow rate of the heat exchange medium at the second port of the second heat exchanger 2. A portion of the heat exchange medium coming from the first port of the first heat exchanger 1 may enter the first bypass branch line, and the remaining portion may enter the first port of the second heat exchanger 2. Specifically, the flow rate of the heat exchange medium entering the first bypass branch line is regulated by the first valve 3. Additionally, the flow rate of the heat exchange medium at the outlet B of the first bypass branch line is controlled such that it does not exceed the flow rate of the heat exchange medium at the second port of the second heat exchanger 2, and that the temperature difference between the temperature of the mixed-temperature heat exchange medium and the preset target heat exchange medium temperature is within the range of -0.3°C to 0.3°C. Since the first bypass branch line is configured to replace a conventional heater for temperature compensation adjustment, the flow rate in the first bypass branch line is typically small. Moreover, the smaller the flow rate is, and the higher the relative accuracy in temperature compensation adjustment is.

[0032] The first valve 3 is an adjustable control valve whose opening degree may be regulated manually. In this case, the first valve 3 may be a mechanical valve whose opening degree may be slowly adjusted manually. Alternatively, the first valve 3 may be an electronic valve whose opening degree may be controlled and regulated by a controller of the system. In this embodiment, the first valve 3 is preferably configured as an electronic valve, and its opening degree is controlled and regulated by a controller to achieve higher regulation accuracy.

[0033] In an embodiment, the temperature control system further includes a first temperature sensor T1 for detecting the temperature of the mixed-temperature heat exchange medium. By detecting the temperature of the mixed-temperature heat exchange medium via the first temperature sensor T1, a basis may be provided for regulating the flow rate in the first bypass branch line. That is, the opening degree of the first valve 3 is adjusted based on the temperature of the mixed-temperature heat exchange medium, thereby changing the flow rate in the first bypass branch line and further improving control accuracy

[0034] In an embodiment, the temperature control system further includes a controller. The controller is configured to control the opening degree of the first valve 3 based on the detected value from the first temperature sensor T1, so as to adjust the flow rate of the heat exchange medium in the first bypass branch line by controlling the opening degree of the first valve 3, ensuring that the flow rate of the heat exchange medium in the first bypass branch line is 0.1% to 10% of the flow rate of the heat exchange medium at the second port of the second heat exchanger 2. The controller is further configured to control the flow rate of the heat exchange medium in the first bypass branch line within this range based on the detected value from the first temperature sensor T1, thereby meeting the high-precision requirements of the temperature control system.

[0035] In an embodiment, the temperature control system further includes a second temperature sensor T2 for detecting the temperature of the heat exchange medium at the second port of the second heat exchanger 2. It is understood that the second temperature sensor T2 should be located upstream of the position where the first bypass branch line is in communication with the second port of the second heat exchanger 2 to mix the heat exchange medium coming from the first bypass branch line and the heat exchange medium coming from the second port of the second heat exchanger 2. The second temperature sensor T2 is configured to detect the temperature of the heat exchange medium at the second port of the second heat exchanger 2, thereby facilitating corresponding adjustment of the flow rate in the first bypass branch line based on this temperature. That is, based on the temperature of the heat exchange medium at the second port of the second heat exchanger 2, the opening degree of the first valve 3 is controlled to change the flow rate in the first bypass branch line. In this way, based on the detected value from the first temperature sensor T1, the detected value from the second temperature sensor T2, and the preset target heat exchange medium temperature, the opening degree of the first valve 3 may be precisely controlled, and in turn the flow rate of the heat exchange medium in the first bypass branch line may be accurately adjusted to adjust the temperature of the mixed-temperature heat exchange medium until the temperature difference between the temperature of the mixed-temperature heat exchange medium and the preset target heat exchange medium temperature is within the range of -0.3°C to 0.3°C, thus achieving higher adjustment accuracy.

[0036] Furthermore, the controller is further configured to control the opening degree of the first valve 3 based on the detected value from the second temperature sensor T2. The controller is further configured to control the opening degree of the first valve 3 based on the detected values from both the first temperature sensor T1 and the second temperature sensor T2, further enhancing control accuracy and reducing the impact of temperature fluctuations of the heat exchange medium at the second port of the second heat exchanger 2 on the temperature control accuracy of the mixed-temperature heat exchange medium.

[0037] In an embodiment, the temperature control system further includes a first flow sensor F1 for detecting the flow rate of a working medium in the first bypass branch line. Feedback of the flow rate in the first bypass branch line is provided via the first flow sensor F1, meaning that feedback adjustment is performed based on the detected value of the flow rate in the first bypass branch line to facilitate precise control of the flow rate in the first bypass branch line. Moreover, the controller is further configured to control the opening degree of the first valve 3 based on the detected value from the first flow sensor F1.

[0038] In an embodiment, the temperature control system further includes a second flow sensor F2 provided at the first port of the first heat exchanger 1. The second flow sensor F2 is configured to detect the flow rate of the heat exchange medium at the first port of the first heat exchanger 1. By providing feedback of the flow rate of the heat exchange medium at the first port of the first heat exchanger 1 via the second flow sensor F2, the opening degree of the first valve 3 may be controlled based on the detected value of the flow rate of the heat exchange medium at the first port of the first heat exchanger 1, which in turn alters the flow rate of the heat exchange medium in the first bypass branch line, facilitating precise control of the flow rate of the heat exchange medium in the first bypass branch line. Furthermore, the controller is further configured to control the opening degree of the first valve 3 based on the detected value from the second flow sensor F2, thereby precisely controlling the flow rate value of the heat exchange medium in the first bypass branch line.

[0039] In an embodiment, to ensure high precision of this temperature control system, the accuracies of both the first temperature sensor T1 and the second temperature sensor T2 are within ± 0.03°C. The accuracy of the first valve is within 1%, and the accuracies of both the first flow sensor F1 and the second flow sensor F2 are within 1%. In this way, the temperature control system may be applied in high-precision regulation systems for temperature regulation of the apparatus with high-precision heat dissipation requirements, meeting the high-precision requirements for temperature monitoring and valve opening degree in high-precision temperature regulation systems and matching the high-precision regulation of the temperature control system.

[0040] In an embodiment, the temperature control system further includes a third temperature sensor T3 or a first pressure sensor P1, and / or a fourth temperature sensor T4 or a second pressure sensor P2, for monitoring changes in the load of the first heat exchanger 1. The third temperature sensor T3 or the first pressure sensor P1 is positioned at the first port of the first heat exchanger 1, whereas the fourth temperature sensor T4 or the second pressure sensor P2 is positioned at the second port of the first heat exchanger 1. By monitoring changes in temperature or pressure at the first and / or second ports of the first heat exchanger 1, changes in the load of the first heat exchanger 1 may be monitored, that is, changes in heat exchange of the component or environment that needs to be cooled at the first heat exchanger 1. When the heat exchange demand for the load increases or decreases, the control temperature of the entire temperature control system may be adjusted in a timely manner to always match the heat exchange requirements of the load.

[0041] Thus, based on the detected temperature from the third temperature sensor T3 or the detected pressure from the first pressure sensor P1, or the detected temperature from the fourth temperature sensor T4 or the detected pressure from the second pressure sensor P2, the opening degree of the first valve 3 may be adjusted in a timely manner to adjust the flow rate of the heat exchange medium in the first bypass branch line, so that the temperature of the mixed-temperature heat exchange medium can reach the preset target heat exchange medium temperature after the load is updated.

[0042] Furthermore, the controller is configured to adjust the preset target heat exchange medium temperature at the second port of the first heat exchanger 1 based on the temperature or pressure of the heat exchange medium at the second port of the first heat exchanger 1 and / or the temperature or pressure of the heat exchange medium at the first port of the first heat exchanger 1. Pressure detection may be converted into feedback for the corresponding flow rate. When the load at the terminal changes, a feedback is provided via the third temperature sensor T3 or the first pressure sensor P1, and / or the fourth temperature sensor T4 or the second pressure sensor P2, indicating changes in the temperature or flow rate at the water return port, the temperature or flow rate at the water outlet port, or the temperature difference or flow rate changes between the two, and the opening degree of the first valve 3 is adjusted accordingly based on the feedback, achieving precise control

[0043] In an embodiment, the first valve 3 may be a two-way valve or a three-way valve. Referring to FIG. 3, the first valve 3 is a two-way valve, its first port is connected to the first port of the first heat exchanger 1 and its second port is connected to the second port of the second heat exchanger 2. That is, the first port of the two-way valve serves as the inlet A of the first bypass branch line. In some other embodiments, referring to FIG. 4, the first valve 3 is a three-way valve, its first port is connected to the first port of the first heat exchanger 1, its second port is connected to the second port of the second heat exchanger 2, and its third port is connected to the first port of the second heat exchanger 2. The first port of the three-way valve is in communication with both the second port and the third port of the three-way valve, such that the three-way valve is configured to adjust the flow rate in the first bypass branch line.

[0044] In an embodiment, referring to FIG. 2, the temperature control system further includes a mixer 4. The mixer 4 is configured to mix the heat exchange medium coming from the first bypass branch line with the heat exchange medium coming from the second port of the second heat exchanger 2, thereby forming a mixed-temperature heat exchange medium. An inlet of the mixer 4 is connected to the outlet B of the first bypass branch line and the second port of the second heat exchanger 2, whereas an outlet of the mixer 4 is connected to the second port of the first heat exchanger 1. The mixer 4 is provided to accelerate uniform mixing of the temperature, enhancing the efficiency and precision of the overall temperature control system. In other embodiments, the mixer 4 may be omitted. For instance, the outlet B of the first bypass branch line and the second port of the second heat exchanger 2 are connected to the second port of the first heat exchanger 1 via a manifold, allowing the heat exchange medium to mix inside the manifold. Alternatively, the outlet B of the first bypass branch line is connected to the pipeline between the second port of the second heat exchanger 2 and the second port of the first heat exchanger 1, achieving the mixing of the heat exchange medium as well. Specifically, when a mixer 4 is provided, the first temperature sensor T1 may be located at the outlet of the mixer 4 to detect the temperature of the mixed-temperature heat exchange medium at the outlet of the mixer 4.

[0045] In an embodiment, at least one baffle component 41 is arranged within the mixer 4, and there is a gap between the at least one baffle component 41 and an inner wall of the mixer 4. That is, the baffle component 41 is in a semi-enclosed state. By providing the baffle component 41, the fluid inside the mixer 4 is guided, and the flow path of the fluid within the mixer 4 is extended, resulting in more uniform mixing of the fluid. The baffle component 41 may specifically be a partition plate.

[0046] In an embodiment, the temperature control system further includes a thermal buffer 5, which is connected between the second port of the first heat exchanger 1 and the outlet of the mixer 4. The thermal buffer 5 is provided to regulate temperature stability, ensuring that the temperature is further stabilized following high-precision fine-tuning of the temperature via the first bypass branch line, and the temperature-stabilized heat exchange medium is then supplied to the second port of the first heat exchanger 1, thereby achieving precise control

[0047] In one embodiment, referring to FIG. 5, a heater 11 is further arranged between the thermal buffer 5 and the mixer 4 to regulate the temperature of the mixed-temperature heat exchange medium. A driving pump 9 is arranged between the heater 11 and the mixer 4. A water tank 10 is further arranged between the driving pump 9 and the mixer 4 to store the mixed-temperature heat exchange medium. By arranging the heater 11 downstream of the mixer 4, the mixed-temperature heat exchange medium that has passed through the mixer 4 may be further heated by the heater 11, achieving additional temperature compensation. Through the combined action of the first bypass branch line and the heater 11, multi-stage temperature compensation may be achieved, further enhancing temperature control precision. Additionally, the driving pump 9 is configured to provide motive force for the flow of the mixed-temperature heat exchange medium. Furthermore, the water tank 10 is configured to provide a larger buffering space for the heat exchange medium, which enables better mixing of the heat exchange medium within the water tank 10 and more uniform temperature of the heat exchange medium, thereby further enhancing the precision and stability of the temperature control system. A seventh temperature sensor T7 may be arranged at an outlet of the heater 11, and a third pressure sensor P3 may be arranged at an outlet of the driving pump 9. An eighth temperature sensor T8 may be arranged in a replenishment pipeline of the water tank 10.

[0048] In an embodiment, the second heat exchanger 2 is connected to at least one of a compressor cooling circuit 6 and a cooling water cooling circuit 7. The heat exchange medium flowing through the second heat exchanger 2 is cooled by the compressor cooling circuit 6 or the cooling water cooling circuit 7 to reach the temperature at the outlet. Utilizing the compressor cooling circuit 6 or the cooling water cooling circuit 7 offers high cooling efficiency. In other embodiments, the second heat exchanger 2 may be alternatively cooled by air cooling or the like.

[0049] In an embodiment, referring to FIG. 2, the second heat exchanger 2 is only connected to the cooling water cooling circuit 7. The second heat exchanger 2 includes a third port and a fourth port that are in communication with each other. The third port serves as the cooling medium outlet, and the fourth port serves as the cooling medium inlet. Thus, the heat exchange medium inside the second heat exchanger 2 is cooled by the external cooling medium. Specifically, a fifth temperature sensor T5 may be connected to the third port, whereas a sixth temperature sensor T6 and a third flow sensor F3 may be connected to the fourth port, for the purpose of detecting the temperature of the cooling medium, respectively.

[0050] In an embodiment, referring to FIG. 6, the cooling water circuit includes a third heat exchanger 71. The compressor cooling circuit 6 includes an expansion valve 61, a bypass valve 62, and a compressor 63. The second heat exchanger 2 includes a third port and a fourth port that are in communication with each other. The third port of the second heat exchanger 2 is connected to a first port of the third heat exchanger 71 via the expansion valve 61. A second port of the third heat exchanger 71 is connected to the fourth port of the second heat exchanger 2 via the compressor 63. The bypass valve 62 is connected between the first port of the third heat exchanger 71 and the second port of the second heat exchanger 2. The third heat exchanger 71 is connected to an external cooling medium. Thus, the heat exchange medium within the third heat exchanger 71 is first cooled by the external cooling medium. The primary cooled heat exchange medium is further cooled under the action of the compressor 63, thereby cooling the heat exchange medium inside the second heat exchanger 2. Specifically, the third heat exchanger 71 includes a third port and a fourth port that are in communication with each other. The third port of the third heat exchanger 71 serves as a cooling medium outlet, and the fourth port of the third heat exchanger 71 serves as a cooling medium inlet. Thus, the heat exchange medium inside the third heat exchanger 71 is cooled by the external cooling medium. Specifically, a fifth temperature sensor T5 may be connected to the third port of the third heat exchanger 71, and a sixth temperature sensor T6 may be connected to the fourth port of the third heat exchanger 71, for the purpose of detecting the temperature of the cooling medium, respectively. The expansion valve 61 and the bypass valve 62 in the compressor cooling circuit 6 may be configured to prevent overheating of the compressor 63 and facilitate hot gas bypass, respectively.

[0051] In other embodiments, the cooling water cooling circuit 7 may be omitted, and the heat exchange medium inside the second heat exchanger 2 may be cooled solely by the compressor cooling circuit 6. Specifically, depending on load variations, when the cooling water cooling circuit 7 can meet the load requirements, it is preferred to adopt the cooling water cooling circuit 7. However, when the cooling water cooling circuit 7 fails to meet the load requirements, the compressor cooling circuit 6 may be used alone. Alternatively, as shown in FIG. 5, the compressor cooling circuit 6 may be combined with the cooling water cooling circuit 7, and the cooling capacity or temperature differences is compensated by the compressor cooling circuit 6.

[0052] In an embodiment, referring to FIG. 7, the temperature control system further includes a second bypass branch line. The second bypass branch line is connected to the first port and the second port of the first heat exchanger 1. The second bypass branch line is configured to bypass a portion of the working medium coming from the first port of the first heat exchanger 1 to the second port of the first heat exchanger 1. Moreover, a second valve 8 is arranged in the second bypass branch line to adjust the flow rate of the working medium in the second bypass branch line. The mixed-temperature heat exchange medium may be introduced into the first port of the first heat exchanger 1 via the second bypass branch line. Through the second bypass branch line, flow rate adjustment of the system may be achieved to control the flow rate of the heat exchange medium entering the first heat exchanger 1.

[0053] Specifically, the second valve 8 is a three-way valve. A first port of the three-way valve is connected to the first port of the first heat exchanger 1, a second port of the three-way valve is connected to the second port of the first heat exchanger 1, and a third port of the three-way valve is connected downstream of the connection point between the outlet B of the first bypass branch line and the second port of the second heat exchanger 2. The third port of the three-way valve is in communication with both the first port and the second port of the three-way valve.

[0054] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. Same and similar parts among the embodiments may be referred to each other.

[0055] According to the above description of the disclosed embodiments, those skilled in the art can implement or practice the present application. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments described herein, but should conform to the broadest scope consistent with the principle and novel features disclosed herein.

Examples

Embodiment Construction

[0025]A temperature control system is provided according to an embodiment of the present application, which is configured to allocate waste heat through flow rate adjustment, thereby achieving temperature compensation and reducing energy consumption associated with the temperature compensation.

[0026]The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. It is apparent that the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative work fall within the protection scope of the present application.

[0027]A temperature control system is provided according to the present application, which is applied to an apparatus with high-precision heat dissipation requir...

[0001] The present application claims the priority to Chinese Patent Application No. 202310789982.6, titled "TEMPERATURE CONTROL SYSTEM", filed on June 28, 2023 with the China National Intellectual Property Administration, which is incorporated herein by reference in its entirety.FIELD

[0002] The present application relates to the technical field of temperature control, and in particular to a temperature control system.BACKGROUND

[0003] In terms of the existing high-precision temperature-controlled cooling field, such as high-precision temperature-controlled air conditioning cooling systems, reference is made to FIG. 1. A first port of a first heat exchanger 01 is connected to a first port of a second heat exchanger 02. A second port of a second heat exchanger 02 is connected to a second port of the first heat exchanger 01 via a heater 03 and a thermal buffer 04 in turn. The first heat exchanger 01 is configured as a terminal heat exchanger. After exchanging heat with the apparatus, the temperature of the heat exchange medium inside the first heat exchanger 01 rises. The high-temperature heat exchange medium then flows back to the second heat exchanger 02, where it is re-cooled. After passing through the heater 03 and the thermal buffer 04, it flows into the first heat exchanger 01 again to cool the external environment or the apparatus.

[0004] Temperature compensation in this cooling system is achieved by the heater, which is typically an electric heating wire. That is, when the temperature approaches the critical desired temperature, the heat exchange medium is electrically heated by the heater to quickly achieve the target temperature with minimal fluctuations. However, since the heater is a power-consuming component, adopting the heater for temperature compensation increases the losses of the overall system, which leads to an increase in Power Usage Effectiveness (PUE) and is not conducive to energy conservation.

[0005] In summary, how to achieve temperature compensation without a heater so as to address the issue of high energy consumption of the cooling system is a challenge that needs to be solved by those skilled in the art at present.SUMMARY

[0006] In view of this, an object of the present application is to provide a temperature control system, and a structural design of its system loop enables temperature compensation without a heater, thereby addressing the issue of high energy consumption in cooling systems.

[0007] To achieve the above object, the following technical solutions are provided according to the present application.

[0008] A temperature control system, applied to an apparatus with high-precision heat dissipation requirements, includes: a first heat exchanger, a second heat exchanger, a first bypass branch line, and a first valve.

[0009] A first port of the first heat exchanger is in communication with a first port of the second heat exchanger.

[0010] An inlet of the first bypass branch line is connected to the first port of the first heat exchanger, and an outlet of the first bypass branch line is in communication with a second port of the second heat exchanger, so that a heat exchange medium flowing out of the first bypass branch line is mixed with a heat exchange medium flowing out of the second port of the second heat exchanger to form a mixed-temperature heat exchange medium, which then flows into a second port of the first heat exchanger.

[0011] The first valve may be configured to regulate a flow rate of the heat exchange medium in the first bypass branch line so as to adjust a temperature of the mixed-temperature heat exchange medium until a temperature difference between the temperature of the mixed-temperature heat exchange medium and a preset target heat exchange medium temperature is within a range of -0.3°C to 0.3°C.

[0012] Optionally, the temperature control system described above further includes: a first temperature sensor for detecting the temperature of the mixed-temperature heat exchange medium, and a controller. The controller is configured to control an opening degree of the first valve based on a detected value from the first temperature sensor, so as to regulate the flow rate of the heat exchange medium in the first bypass branch line by controlling the opening degree of the first valve, ensuring that the flow rate of the heat exchange medium in the first bypass branch line is 0.1% to 10% of the flow rate of the heat exchange medium at the second port of the second heat exchanger.

[0013] Optionally, the temperature control system described above further includes a second temperature sensor for detecting the temperature of the heat exchange medium at the second port of the second heat exchanger. The controller is further configured to control the opening degree of the first valve based on a detected value from the second temperature sensor.

[0014] Optionally, the temperature control system described above further includes a first flow sensor for detecting the flow rate of a working medium in the first bypass branch line. The controller is further configured to control the opening degree of the first valve based on a detected value from the first flow sensor.

[0015] Optionally, the temperature control system described above further includes a second flow sensor arranged at the first port of the first heat exchanger. The second flow sensor is configured to detect the flow rate of the heat exchange medium at the first port of the first heat exchanger, and the controller is further configured to control the opening degree of the first valve based on a detected value from the second flow sensor.

[0016] Optionally, in the temperature control system described above, an accuracy of each of the first temperature sensor and the second temperature sensor is within ±0.3°C, an accuracy of the first valve is within 1%, and an accuracy of each of the first flow sensor and the second flow sensor is within 1%.

[0017] Optionally, the temperature control system described above further includes a third temperature sensor or a first pressure sensor arranged at the first port of the first heat exchanger, and / or a fourth temperature sensor or a second pressure sensor arranged at the second port of the first heat exchanger. The third temperature sensor or the first pressure sensor is configured to detect the temperature or pressure of the heat exchange medium at the first port of the first heat exchanger. The fourth temperature sensor or the second pressure sensor is configured to detect the temperature or pressure of the heat exchange medium at the second port of the first heat exchanger. The controller is further configured to adjust the preset target heat exchange medium temperature at the second port of the first heat exchanger based on the temperature or pressure of the heat exchange medium at the second port of the first heat exchanger, and / or the temperature or pressure of the heat exchange medium at the first port of the first heat exchanger.

[0018] Optionally, the temperature control system described above further includes a mixer, which is configured to mix the heat exchange medium coming from the first bypass branch line with the heat exchange medium coming from the second port of the second heat exchanger to form a mixed-temperature heat exchange medium. The mixer is connected to an outlet of the first bypass branch line and the second port of the second heat exchanger. At least one baffle component 41 is arranged within the mixer, and there is a gap formed between the at least one baffle component and an inner wall of the mixer.

[0019] Optionally, the temperature control system described above further includes a thermal buffer, which is connected between the second port of the first heat exchanger and an outlet of the mixer. A heater is arranged between the thermal buffer and the mixer to regulate the temperature of the mixed-temperature heat exchange medium. A driving pump is arranged between the heater and the mixer, and a water tank is arranged between the driving pump and the mixer to store the mixed-temperature heat exchange medium.

[0020] Optionally, the temperature control system described above further includes a second bypass branch line that is connected to the first port and the second port of the first heat exchanger. The second bypass branch line is configured to bypass a portion of the working medium coming from the first port of the first heat exchanger to the second port of the first heat exchanger. Moreover, a second valve is arranged in the second bypass branch line.

[0021] The temperature control system provided according to the present application includes a first heat exchanger, a second heat exchanger, a first bypass branch line, and a first valve. A first port of the first heat exchanger is in communication with a first port of the second heat exchanger. An inlet of the first bypass branch line is connected to the first port of the first heat exchanger, and an outlet of the first bypass branch line is in communication with a second port of the second heat exchanger. This enables the heat exchange medium coming from the first bypass branch line to mix with the heat exchange medium coming from the second port of the second heat exchanger to form a mixed-temperature heat exchange medium, which then flows into a second port of the first heat exchanger. The first valve may be configured to regulate the flow rate of the heat exchange medium in the first bypass branch line to adjust the temperature of the mixed-temperature heat exchange medium until the temperature difference between the temperature of the mixed-temperature heat exchange medium and the preset target heat exchange medium temperature is within the range of -0.3°C to 0.3°C.

[0022] When applying the temperature control system provided according to the present application, the high-temperature heat exchange medium flowing out of the first port of the first heat exchanger passes through the second heat exchanger for cooling, thereby reaching a temperature that is close to but slightly lower than a target cooling temperature. Through the first bypass branch line, a portion of the high-temperature heat exchange medium coming from the first port of the first heat exchanger is conveyed to the first port of the second heat exchanger and mixed with the heat exchange medium coming from it. The flow rate in the first bypass branch line is usually relatively small, enabling high-precision fine-tuning of the temperature. The adjusted mixed-temperature heat exchange medium is then conveyed to the second port of the first heat exchanger. After absorbing heat from a component or an environment that requires cooling at the first heat exchanger, the high-temperature heat exchange medium flows out of the first port, forming a circulation loop. In summary, for the temperature control system provided according to the present application, by introducing the first bypass branch line, the heat from the high-temperature heat exchange medium that would otherwise be wasted in electrical heating is fully utilized. It can achieve temperature compensation without a heater, reducing the losses of the entire system and facilitating energy conservation.BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate technical solutions in the embodiments of the present application or in the conventional technology, drawings required for describing the embodiments or the conventional technology are briefly de scribed hereinafter. Apparently, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained based on the provided drawings without any creative efforts. FIG. 1 is a schematic structural view of a temperature control system in the conventional technology; FIG. 2 is a schematic structural view of a temperature control system according to a specific embodiment of the present application; FIG. 3 is a schematic connection view of a first valve; FIG. 4 is another schematic connection view of a first valve; FIG. 5 is a schematic structural view of a temperature control system according to another specific embodiment of the present application; FIG. 6 is a schematic view of an external circuit of a second heat exchanger; and FIG. 7 is a schematic structural view of a temperature control system according to yet another specific embodiment of the present application.

[0024] Reference numerals in the drawings are as follows: 1 first heat exchanger, 2 second heat exchanger, A inlet of first bypass branch line, B outlet of first bypass branch line, 3 first valve, 4 mixer, 41 baffle component, 5 thermal buffer, 6 compressor cooling circuit, 61 expansion valve, 62 bypass valve, 63 compressor, 7 cooling water cooling circuit, 71 third heat exchanger, 8 second valve, 9 driving pump, 10 water tank, 11 heater.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] A temperature control system is provided according to an embodiment of the present application, which is configured to allocate waste heat through flow rate adjustment, thereby achieving temperature compensation and reducing energy consumption associated with the temperature compensation.

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. It is apparent that the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative work fall within the protection scope of the present application.

[0027] A temperature control system is provided according to the present application, which is applied to an apparatus with high-precision heat dissipation requirements. By introducing a first bypass branch line, a portion of a high-temperature heat exchange medium coming from a first heat exchanger 1 is directed to an outlet of a second heat exchanger 2, utilizing the wasted heat from the high-temperature heat exchange medium to achieve fine-tuning of the outlet temperature. The configuration of the main cooling loop formed by the first heat exchanger 1 and the second heat exchanger 2 may refer to the structure of the conventional cooling system. It should be noted that in this embodiment, "high precision" refers to a desired temperature control accuracy with a deviation value within ±0.3°C from the target temperature.

[0028] Reference is made to FIG. 2, which is a schematic structural view of a temperature control system according to a specific embodiment of the present application.

[0029] In an embodiment, the temperature control system provided according to the present application includes a first heat exchanger 1, a second heat exchanger 2, a first bypass branch line, and a first valve 3. The first heat exchanger 1 is configured as a terminal heat exchanger for exchanging heat with a component or an environment that requires cooling. The second heat exchanger 2 is configured to cool the high-temperature heat exchange medium flowing out of the first heat exchanger 1. It is understood that the heat exchange medium includes, but is not limited to, coolants such as cooling water, and fluids such as gases may also be used as required. A first port of the first heat exchanger 1 is in communication with a first port of the second heat exchanger 2, and a second port of the second heat exchanger 2 is in communication with the first port of the first heat exchanger 1. The first port of the first heat exchanger 1 serves as a water return port of the temperature control system, and the second port of the first heat exchanger 1 functions as a water outlet port of the temperature control system. The heat exchange medium with high-precision temperature control coming from the water outlet port of the temperature control system is provided via the first heat exchanger 1 to a component that requires cooling. The heat exchange medium at the water return port of the temperature control system exchanges heat with the component or environment that requires cooling at the first heat exchanger 1. After absorbing the heat from the component or environment, the heat exchange medium then flows through the second heat exchanger 2 for cooling. Moreover, an inlet A of the first bypass branch line is connected to the first port of the first heat exchanger 1, and an outlet B of the first bypass branch line is connected to the second port of the second heat exchanger 2. This enables the heat exchange medium coming from the first bypass branch line to be mixed with the heat exchange medium coming from the second port of the second heat exchanger 2 to form a mixed-temperature heat exchange medium, which then flows into the second port of the first heat exchanger 1. The first valve 3 is configured to regulate the flow rate of the heat exchange medium in the first bypass branch line to adjust the temperature of the mixed-temperature heat exchange medium until the temperature difference between the temperature of the mixed-temperature heat exchange medium and a preset target heat exchange medium temperature is within the range of -0.3°C to 0.3°C. The preset target heat exchange medium temperature may specifically refer to the target temperature of the heat exchange medium at the second port of the first heat exchanger 1. The first valve 3 is specifically located in the first bypass branch line.

[0030] When applying the temperature control system provided according to the present application, the high-temperature heat exchange medium coming from the first port of the first heat exchanger 1 flows through the second heat exchanger 2 for cooling, thereby reaching a temperature that is close to but slightly lower than the target cooling temperature. Through the first bypass branch line, a portion of the high-temperature heat exchange medium coming from the first port of the first heat exchanger 1 is conveyed to the first port of the second heat exchanger 2 and mixed with the heat exchange medium coming from it. The flow rate in the first bypass branch line is usually small, thereby achieving high-precision fine-tuning of the temperature. The adjusted mixed-temperature heat exchange medium is then conveyed to the second port of the first heat exchanger 1. After absorbing heat from a component or an environment that requires cooling at the first heat exchanger 1, the high-temperature heat exchange medium flows out of the first port, thereby forming a circulation loop. In summary, for the temperature control system provided according to the present application, by introducing the first bypass branch line, the wasted heat from the high-temperature heat exchange medium is fully utilized, and achieves temperature compensation without a heater, reducing the losses of the entire system and facilitating energy conservation.

[0031] In an embodiment, the flow rate at the outlet B of the first bypass branch line does not exceed the flow rate at the second port of the second heat exchanger 2. Specifically, the flow rate of the heat exchange medium in the first bypass branch line is 0.1% to 10% of the flow rate of the heat exchange medium at the second port of the second heat exchanger 2. A portion of the heat exchange medium coming from the first port of the first heat exchanger 1 may enter the first bypass branch line, and the remaining portion may enter the first port of the second heat exchanger 2. Specifically, the flow rate of the heat exchange medium entering the first bypass branch line is regulated by the first valve 3. Additionally, the flow rate of the heat exchange medium at the outlet B of the first bypass branch line is controlled such that it does not exceed the flow rate of the heat exchange medium at the second port of the second heat exchanger 2, and that the temperature difference between the temperature of the mixed-temperature heat exchange medium and the preset target heat exchange medium temperature is within the range of -0.3°C to 0.3°C. Since the first bypass branch line is configured to replace a conventional heater for temperature compensation adjustment, the flow rate in the first bypass branch line is typically small. Moreover, the smaller the flow rate is, and the higher the relative accuracy in temperature compensation adjustment is.

[0032] The first valve 3 is an adjustable control valve whose opening degree may be regulated manually. In this case, the first valve 3 may be a mechanical valve whose opening degree may be slowly adjusted manually. Alternatively, the first valve 3 may be an electronic valve whose opening degree may be controlled and regulated by a controller of the system. In this embodiment, the first valve 3 is preferably configured as an electronic valve, and its opening degree is controlled and regulated by a controller to achieve higher regulation accuracy.

[0033] In an embodiment, the temperature control system further includes a first temperature sensor T1 for detecting the temperature of the mixed-temperature heat exchange medium. By detecting the temperature of the mixed-temperature heat exchange medium via the first temperature sensor T1, a basis may be provided for regulating the flow rate in the first bypass branch line. That is, the opening degree of the first valve 3 is adjusted based on the temperature of the mixed-temperature heat exchange medium, thereby changing the flow rate in the first bypass branch line and further improving control accuracy

[0034] In an embodiment, the temperature control system further includes a controller. The controller is configured to control the opening degree of the first valve 3 based on the detected value from the first temperature sensor T1, so as to adjust the flow rate of the heat exchange medium in the first bypass branch line by controlling the opening degree of the first valve 3, ensuring that the flow rate of the heat exchange medium in the first bypass branch line is 0.1% to 10% of the flow rate of the heat exchange medium at the second port of the second heat exchanger 2. The controller is further configured to control the flow rate of the heat exchange medium in the first bypass branch line within this range based on the detected value from the first temperature sensor T1, thereby meeting the high-precision requirements of the temperature control system.

[0035] In an embodiment, the temperature control system further includes a second temperature sensor T2 for detecting the temperature of the heat exchange medium at the second port of the second heat exchanger 2. It is understood that the second temperature sensor T2 should be located upstream of the position where the first bypass branch line is in communication with the second port of the second heat exchanger 2 to mix the heat exchange medium coming from the first bypass branch line and the heat exchange medium coming from the second port of the second heat exchanger 2. The second temperature sensor T2 is configured to detect the temperature of the heat exchange medium at the second port of the second heat exchanger 2, thereby facilitating corresponding adjustment of the flow rate in the first bypass branch line based on this temperature. That is, based on the temperature of the heat exchange medium at the second port of the second heat exchanger 2, the opening degree of the first valve 3 is controlled to change the flow rate in the first bypass branch line. In this way, based on the detected value from the first temperature sensor T1, the detected value from the second temperature sensor T2, and the preset target heat exchange medium temperature, the opening degree of the first valve 3 may be precisely controlled, and in turn the flow rate of the heat exchange medium in the first bypass branch line may be accurately adjusted to adjust the temperature of the mixed-temperature heat exchange medium until the temperature difference between the temperature of the mixed-temperature heat exchange medium and the preset target heat exchange medium temperature is within the range of -0.3°C to 0.3°C, thus achieving higher adjustment accuracy.

[0036] Furthermore, the controller is further configured to control the opening degree of the first valve 3 based on the detected value from the second temperature sensor T2. The controller is further configured to control the opening degree of the first valve 3 based on the detected values from both the first temperature sensor T1 and the second temperature sensor T2, further enhancing control accuracy and reducing the impact of temperature fluctuations of the heat exchange medium at the second port of the second heat exchanger 2 on the temperature control accuracy of the mixed-temperature heat exchange medium.

[0037] In an embodiment, the temperature control system further includes a first flow sensor F1 for detecting the flow rate of a working medium in the first bypass branch line. Feedback of the flow rate in the first bypass branch line is provided via the first flow sensor F1, meaning that feedback adjustment is performed based on the detected value of the flow rate in the first bypass branch line to facilitate precise control of the flow rate in the first bypass branch line. Moreover, the controller is further configured to control the opening degree of the first valve 3 based on the detected value from the first flow sensor F1.

[0038] In an embodiment, the temperature control system further includes a second flow sensor F2 provided at the first port of the first heat exchanger 1. The second flow sensor F2 is configured to detect the flow rate of the heat exchange medium at the first port of the first heat exchanger 1. By providing feedback of the flow rate of the heat exchange medium at the first port of the first heat exchanger 1 via the second flow sensor F2, the opening degree of the first valve 3 may be controlled based on the detected value of the flow rate of the heat exchange medium at the first port of the first heat exchanger 1, which in turn alters the flow rate of the heat exchange medium in the first bypass branch line, facilitating precise control of the flow rate of the heat exchange medium in the first bypass branch line. Furthermore, the controller is further configured to control the opening degree of the first valve 3 based on the detected value from the second flow sensor F2, thereby precisely controlling the flow rate value of the heat exchange medium in the first bypass branch line.

[0039] In an embodiment, to ensure high precision of this temperature control system, the accuracies of both the first temperature sensor T1 and the second temperature sensor T2 are within ± 0.03°C. The accuracy of the first valve is within 1%, and the accuracies of both the first flow sensor F1 and the second flow sensor F2 are within 1%. In this way, the temperature control system may be applied in high-precision regulation systems for temperature regulation of the apparatus with high-precision heat dissipation requirements, meeting the high-precision requirements for temperature monitoring and valve opening degree in high-precision temperature regulation systems and matching the high-precision regulation of the temperature control system.

[0040] In an embodiment, the temperature control system further includes a third temperature sensor T3 or a first pressure sensor P1, and / or a fourth temperature sensor T4 or a second pressure sensor P2, for monitoring changes in the load of the first heat exchanger 1. The third temperature sensor T3 or the first pressure sensor P1 is positioned at the first port of the first heat exchanger 1, whereas the fourth temperature sensor T4 or the second pressure sensor P2 is positioned at the second port of the first heat exchanger 1. By monitoring changes in temperature or pressure at the first and / or second ports of the first heat exchanger 1, changes in the load of the first heat exchanger 1 may be monitored, that is, changes in heat exchange of the component or environment that needs to be cooled at the first heat exchanger 1. When the heat exchange demand for the load increases or decreases, the control temperature of the entire temperature control system may be adjusted in a timely manner to always match the heat exchange requirements of the load.

[0041] Thus, based on the detected temperature from the third temperature sensor T3 or the detected pressure from the first pressure sensor P1, or the detected temperature from the fourth temperature sensor T4 or the detected pressure from the second pressure sensor P2, the opening degree of the first valve 3 may be adjusted in a timely manner to adjust the flow rate of the heat exchange medium in the first bypass branch line, so that the temperature of the mixed-temperature heat exchange medium can reach the preset target heat exchange medium temperature after the load is updated.

[0042] Furthermore, the controller is configured to adjust the preset target heat exchange medium temperature at the second port of the first heat exchanger 1 based on the temperature or pressure of the heat exchange medium at the second port of the first heat exchanger 1 and / or the temperature or pressure of the heat exchange medium at the first port of the first heat exchanger 1. Pressure detection may be converted into feedback for the corresponding flow rate. When the load at the terminal changes, a feedback is provided via the third temperature sensor T3 or the first pressure sensor P1, and / or the fourth temperature sensor T4 or the second pressure sensor P2, indicating changes in the temperature or flow rate at the water return port, the temperature or flow rate at the water outlet port, or the temperature difference or flow rate changes between the two, and the opening degree of the first valve 3 is adjusted accordingly based on the feedback, achieving precise control

[0043] In an embodiment, the first valve 3 may be a two-way valve or a three-way valve. Referring to FIG. 3, the first valve 3 is a two-way valve, its first port is connected to the first port of the first heat exchanger 1 and its second port is connected to the second port of the second heat exchanger 2. That is, the first port of the two-way valve serves as the inlet A of the first bypass branch line. In some other embodiments, referring to FIG. 4, the first valve 3 is a three-way valve, its first port is connected to the first port of the first heat exchanger 1, its second port is connected to the second port of the second heat exchanger 2, and its third port is connected to the first port of the second heat exchanger 2. The first port of the three-way valve is in communication with both the second port and the third port of the three-way valve, such that the three-way valve is configured to adjust the flow rate in the first bypass branch line.

[0044] In an embodiment, referring to FIG. 2, the temperature control system further includes a mixer 4. The mixer 4 is configured to mix the heat exchange medium coming from the first bypass branch line with the heat exchange medium coming from the second port of the second heat exchanger 2, thereby forming a mixed-temperature heat exchange medium. An inlet of the mixer 4 is connected to the outlet B of the first bypass branch line and the second port of the second heat exchanger 2, whereas an outlet of the mixer 4 is connected to the second port of the first heat exchanger 1. The mixer 4 is provided to accelerate uniform mixing of the temperature, enhancing the efficiency and precision of the overall temperature control system. In other embodiments, the mixer 4 may be omitted. For instance, the outlet B of the first bypass branch line and the second port of the second heat exchanger 2 are connected to the second port of the first heat exchanger 1 via a manifold, allowing the heat exchange medium to mix inside the manifold. Alternatively, the outlet B of the first bypass branch line is connected to the pipeline between the second port of the second heat exchanger 2 and the second port of the first heat exchanger 1, achieving the mixing of the heat exchange medium as well. Specifically, when a mixer 4 is provided, the first temperature sensor T1 may be located at the outlet of the mixer 4 to detect the temperature of the mixed-temperature heat exchange medium at the outlet of the mixer 4.

[0045] In an embodiment, at least one baffle component 41 is arranged within the mixer 4, and there is a gap between the at least one baffle component 41 and an inner wall of the mixer 4. That is, the baffle component 41 is in a semi-enclosed state. By providing the baffle component 41, the fluid inside the mixer 4 is guided, and the flow path of the fluid within the mixer 4 is extended, resulting in more uniform mixing of the fluid. The baffle component 41 may specifically be a partition plate.

[0046] In an embodiment, the temperature control system further includes a thermal buffer 5, which is connected between the second port of the first heat exchanger 1 and the outlet of the mixer 4. The thermal buffer 5 is provided to regulate temperature stability, ensuring that the temperature is further stabilized following high-precision fine-tuning of the temperature via the first bypass branch line, and the temperature-stabilized heat exchange medium is then supplied to the second port of the first heat exchanger 1, thereby achieving precise control

[0047] In one embodiment, referring to FIG. 5, a heater 11 is further arranged between the thermal buffer 5 and the mixer 4 to regulate the temperature of the mixed-temperature heat exchange medium. A driving pump 9 is arranged between the heater 11 and the mixer 4. A water tank 10 is further arranged between the driving pump 9 and the mixer 4 to store the mixed-temperature heat exchange medium. By arranging the heater 11 downstream of the mixer 4, the mixed-temperature heat exchange medium that has passed through the mixer 4 may be further heated by the heater 11, achieving additional temperature compensation. Through the combined action of the first bypass branch line and the heater 11, multi-stage temperature compensation may be achieved, further enhancing temperature control precision. Additionally, the driving pump 9 is configured to provide motive force for the flow of the mixed-temperature heat exchange medium. Furthermore, the water tank 10 is configured to provide a larger buffering space for the heat exchange medium, which enables better mixing of the heat exchange medium within the water tank 10 and more uniform temperature of the heat exchange medium, thereby further enhancing the precision and stability of the temperature control system. A seventh temperature sensor T7 may be arranged at an outlet of the heater 11, and a third pressure sensor P3 may be arranged at an outlet of the driving pump 9. An eighth temperature sensor T8 may be arranged in a replenishment pipeline of the water tank 10.

[0048] In an embodiment, the second heat exchanger 2 is connected to at least one of a compressor cooling circuit 6 and a cooling water cooling circuit 7. The heat exchange medium flowing through the second heat exchanger 2 is cooled by the compressor cooling circuit 6 or the cooling water cooling circuit 7 to reach the temperature at the outlet. Utilizing the compressor cooling circuit 6 or the cooling water cooling circuit 7 offers high cooling efficiency. In other embodiments, the second heat exchanger 2 may be alternatively cooled by air cooling or the like.

[0049] In an embodiment, referring to FIG. 2, the second heat exchanger 2 is only connected to the cooling water cooling circuit 7. The second heat exchanger 2 includes a third port and a fourth port that are in communication with each other. The third port serves as the cooling medium outlet, and the fourth port serves as the cooling medium inlet. Thus, the heat exchange medium inside the second heat exchanger 2 is cooled by the external cooling medium. Specifically, a fifth temperature sensor T5 may be connected to the third port, whereas a sixth temperature sensor T6 and a third flow sensor F3 may be connected to the fourth port, for the purpose of detecting the temperature of the cooling medium, respectively.

[0050] In an embodiment, referring to FIG. 6, the cooling water circuit includes a third heat exchanger 71. The compressor cooling circuit 6 includes an expansion valve 61, a bypass valve 62, and a compressor 63. The second heat exchanger 2 includes a third port and a fourth port that are in communication with each other. The third port of the second heat exchanger 2 is connected to a first port of the third heat exchanger 71 via the expansion valve 61. A second port of the third heat exchanger 71 is connected to the fourth port of the second heat exchanger 2 via the compressor 63. The bypass valve 62 is connected between the first port of the third heat exchanger 71 and the second port of the second heat exchanger 2. The third heat exchanger 71 is connected to an external cooling medium. Thus, the heat exchange medium within the third heat exchanger 71 is first cooled by the external cooling medium. The primary cooled heat exchange medium is further cooled under the action of the compressor 63, thereby cooling the heat exchange medium inside the second heat exchanger 2. Specifically, the third heat exchanger 71 includes a third port and a fourth port that are in communication with each other. The third port of the third heat exchanger 71 serves as a cooling medium outlet, and the fourth port of the third heat exchanger 71 serves as a cooling medium inlet. Thus, the heat exchange medium inside the third heat exchanger 71 is cooled by the external cooling medium. Specifically, a fifth temperature sensor T5 may be connected to the third port of the third heat exchanger 71, and a sixth temperature sensor T6 may be connected to the fourth port of the third heat exchanger 71, for the purpose of detecting the temperature of the cooling medium, respectively. The expansion valve 61 and the bypass valve 62 in the compressor cooling circuit 6 may be configured to prevent overheating of the compressor 63 and facilitate hot gas bypass, respectively.

[0051] In other embodiments, the cooling water cooling circuit 7 may be omitted, and the heat exchange medium inside the second heat exchanger 2 may be cooled solely by the compressor cooling circuit 6. Specifically, depending on load variations, when the cooling water cooling circuit 7 can meet the load requirements, it is preferred to adopt the cooling water cooling circuit 7. However, when the cooling water cooling circuit 7 fails to meet the load requirements, the compressor cooling circuit 6 may be used alone. Alternatively, as shown in FIG. 5, the compressor cooling circuit 6 may be combined with the cooling water cooling circuit 7, and the cooling capacity or temperature differences is compensated by the compressor cooling circuit 6.

[0052] In an embodiment, referring to FIG. 7, the temperature control system further includes a second bypass branch line. The second bypass branch line is connected to the first port and the second port of the first heat exchanger 1. The second bypass branch line is configured to bypass a portion of the working medium coming from the first port of the first heat exchanger 1 to the second port of the first heat exchanger 1. Moreover, a second valve 8 is arranged in the second bypass branch line to adjust the flow rate of the working medium in the second bypass branch line. The mixed-temperature heat exchange medium may be introduced into the first port of the first heat exchanger 1 via the second bypass branch line. Through the second bypass branch line, flow rate adjustment of the system may be achieved to control the flow rate of the heat exchange medium entering the first heat exchanger 1.

[0053] Specifically, the second valve 8 is a three-way valve. A first port of the three-way valve is connected to the first port of the first heat exchanger 1, a second port of the three-way valve is connected to the second port of the first heat exchanger 1, and a third port of the three-way valve is connected downstream of the connection point between the outlet B of the first bypass branch line and the second port of the second heat exchanger 2. The third port of the three-way valve is in communication with both the first port and the second port of the three-way valve.

[0054] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. Same and similar parts among the embodiments may be referred to each other.

[0055] According to the above description of the disclosed embodiments, those skilled in the art can implement or practice the present application. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments described herein, but should conform to the broadest scope consistent with the principle and novel features disclosed herein.

Examples

Embodiment Construction

[0025]A temperature control system is provided according to an embodiment of the present application, which is configured to allocate waste heat through flow rate adjustment, thereby achieving temperature compensation and reducing energy consumption associated with the temperature compensation.

[0026]The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. It is apparent that the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative work fall within the protection scope of the present application.

[0027]A temperature control system is provided according to the present application, which is applied to an apparatus with high-precision heat dissipation requir...

Claims

1. A temperature control system, applied to an apparatus with high-precision heat dissipation requirements, wherein the temperature control system comprises: a first heat exchanger (1) and a second heat exchanger (2), wherein a first port of the first heat exchanger (1) is in communication with a first port of the second heat exchanger (2); a first bypass branch line, wherein an inlet (A) of the first bypass branch line is connected to the first port of the first heat exchanger (1), and an outlet (B) of the first bypass branch line is in communication with a second port of the second heat exchanger (2), so that a heat exchange medium flowing out of the first bypass branch line is mixed with a heat exchange medium flowing out of the second port of the second heat exchanger (2) to form a mixed-temperature heat exchange medium, which then flows into a second port of the first heat exchanger (1); and a first valve (3), which is configured to regulate a flow rate of the heat exchange medium in the first bypass branch line so as to adjust a temperature of the mixed-temperature heat exchange medium until a temperature difference between the temperature of the mixed-temperature heat exchange medium and a preset target heat exchange medium temperature is within a range of -0.3°C to 0.3°C.

2. The temperature control system according to claim 1, further comprising a first temperature sensor for detecting the temperature of the mixed-temperature heat exchange medium, and a controller, wherein the controller is configured to control an opening degree of the first valve (3) based on a detected value from the first temperature sensor, so as to regulate the flow rate of the heat exchange medium in the first bypass branch line by controlling the opening degree of the first valve, ensuring that the flow rate of the heat exchange medium in the first bypass branch line is 0.1% to 10% of that of the heat exchange medium at the second port of the second heat exchanger (2).

3. The temperature control system according to claim 2, further comprising a second temperature sensor for detecting a temperature of the heat exchange medium at the second port of the second heat exchanger (2), wherein the controller is further configured to control the opening degree of the first valve (3) based on a detected value from the second temperature sensor.

4. The temperature control system according to claim 3, further comprising a first flow sensor for detecting a flow rate of a working medium in the first bypass branch line, wherein the controller is further configured to control the opening degree of the first valve (3) based on a detected value from the first flow sensor.

5. The temperature control system according to claim 4, further comprising a second flow sensor arranged at the first port of the first heat exchanger (1), wherein the second flow sensor is configured to detect a flow rate of the heat exchange medium at the first port of the first heat exchanger (1), and the controller is further configured to control the opening degree of the first valve (3) based on a detected value from the second flow sensor.

6. The temperature control system according to claim 5, wherein an accuracy of each of the first temperature sensor and the second temperature sensor is within +0.3°C, an accuracy of the first valve (3) is within 1%, and an accuracy of each of the first flow sensor and the second flow sensor is within 1%.

7. The temperature control system according to claim 2, further comprising a third temperature sensor or a first pressure sensor arranged at the first port of the first heat exchanger (1), and / or a fourth temperature sensor or a second pressure sensor arranged at the second port of the first heat exchanger (1), wherein the third temperature sensor or the first pressure sensor is configured to detect the temperature or pressure of the heat exchange medium at the first port of the first heat exchanger (1), whereas the fourth temperature sensor or the second pressure sensor is configured to detect the temperature or pressure of the heat exchange medium at the second port of the first heat exchanger (1), and the controller is further configured to adjust the preset target heat exchange medium temperature at the second port of the first heat exchanger (1) based on the temperature or pressure of the heat exchange medium at the second port of the first heat exchanger (1), and / or the temperature or pressure of the heat exchange medium at the first port of the first heat exchanger (1).

8. The temperature control system according to claim 1, further comprising a mixer (4), which is configured to mix the heat exchange medium coming from the first bypass branch line with the heat exchange medium coming from the second port of the second heat exchanger (2) to form the mixed-temperature heat exchange medium, wherein the mixer (4) is connected to an outlet (B) of the first bypass branch line and the second port of the second heat exchanger (2), and at least one baffle component (41) is arranged within the mixer (4), with a gap formed between the at least one baffle component (41) and an inner wall of the mixer (4).

9. The temperature control system according to claim 8, further comprising a thermal buffer (5), wherein the thermal buffer (5) is connected between the second port of the first heat exchanger (1) and an outlet of the mixer (4), a heater (11) is arranged between the thermal buffer (5) and the mixer (4) to regulate the temperature of the mixed-temperature heat exchange medium, a driving pump (9) is arranged between the heater (11) and the mixer (4), and a water tank (10) is arranged between the driving pump (9) and the mixer (4) to store the mixed-temperature heat exchange medium.

10. The temperature control system according to claim 1, further comprising a second bypass branch line that is connected to the first port and the second port of the first heat exchanger (1), wherein the second bypass branch line is configured to bypass a portion of the working medium coming from the first port of the first heat exchanger (1) to the second port of the first heat exchanger (1), and a second valve (8) is arranged in the second bypass branch line.

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