CN220624330U - High-precision temperature control system - Google Patents
High-precision temperature control system Download PDFInfo
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- CN220624330U CN220624330U CN202321676558.2U CN202321676558U CN220624330U CN 220624330 U CN220624330 U CN 220624330U CN 202321676558 U CN202321676558 U CN 202321676558U CN 220624330 U CN220624330 U CN 220624330U
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- 230000008859 change Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 30
- 239000000498 cooling water Substances 0.000 description 11
- 238000001514 detection method Methods 0.000 description 11
- 239000002826 coolant Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of temperature control, and particularly discloses a high-precision temperature control system which comprises a first heat exchanger, a second heat exchanger, a first bypass branch, a second bypass branch, a first valve and a second valve. The heat exchange medium of the first bypass branch and the heat exchange medium of the second interface of the second heat exchanger are mixed to form a first mixed temperature heat exchange medium, the heat exchange medium of the second bypass branch and the first mixed temperature heat exchange medium are mixed to form a second mixed temperature heat exchange medium, the first valve is arranged in the first bypass branch, and the second valve is arranged in the second bypass branch. By applying the high-precision temperature control system provided by the utility model, the temperature difference range between the temperature of the second mixed temperature heat exchange medium and the temperature of the preset target heat exchange medium is (-0.1), and the temperature compensation precision is improved, so that the high-precision control of the temperature control system is realized.
Description
Technical Field
The utility model relates to the technical field of temperature control, in particular to a high-precision temperature control system.
Background
Referring to fig. 1, a first interface of a first heat exchanger 01 is connected with a first interface of a second heat exchanger 02, a second interface of the second heat exchanger 02 is connected with a second interface of the first heat exchanger 01 sequentially through a heater 03 and a thermal buffer 04, the first heat exchanger 01 is a terminal heat exchanger, after exchanging heat with the external environment or equipment, the temperature of a heat exchange medium in the terminal heat exchanger is increased, the high-temperature heat exchange medium flows back to the second heat exchanger 02, is re-cooled in the second heat exchanger 02, and flows into the first heat exchanger 01 again to cool the external environment or equipment through the functions of the heater 03 and the thermal buffer 04.
The temperature compensation of the cooling system is achieved by a heater, typically an electrical heating wire. Namely, when the temperature is close to the critical required temperature, the heat exchange medium is electrically heated by the heater, so that the temperature reaches the standard and the fluctuation is small. However, temperature compensation is performed by primary electric heating, which is high in energy consumption and low in accuracy.
In summary, how to effectively improve the problems of low accuracy of the cooling system without using a heater is a problem that needs to be solved by those skilled in the art at present.
Disclosure of Invention
In view of the above, an object of the present utility model is to provide a high-precision temperature control system that can solve the problem of low precision of a cooling system without temperature compensation by a heater.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the high-precision temperature control system is applied to equipment with high-precision heat dissipation requirements, and comprises a first heat exchanger and a second heat exchanger, wherein a first interface of the first heat exchanger is communicated with a first interface of the second heat exchanger;
the inlet of the first bypass branch is connected with the first interface of the first heat exchanger, and the outlet of the first bypass branch is communicated with the second interface of the second heat exchanger;
the inlet of the second bypass branch is communicated with the first bypass branch, and the outlet of the second bypass branch is communicated with the second interface of the second heat exchanger; the second heat exchanger, the outlet of the first bypass branch and the outlet of the second bypass branch are sequentially arranged;
the first valve is arranged on the first bypass branch, and the second valve is arranged on the second bypass branch.
Optionally, in the high-precision temperature control system, the system further comprises a first temperature sensor for detecting the temperature of the first mixed temperature heat exchange medium and a second temperature sensor for detecting the temperature of the second mixed temperature heat exchange medium.
Optionally, in the high-precision temperature control system, the system further comprises a third temperature sensor for detecting the temperature of the heat exchange medium at the second interface of the second heat exchanger.
Optionally, in the high-precision temperature control system, the system further comprises a first flow sensor for detecting the flow of the first bypass branch heat exchange medium.
Optionally, in the high-precision temperature control system, the system further comprises a second flow sensor arranged at the first interface of the first heat exchanger.
Optionally, in the high-precision temperature control system, the precision of the first temperature sensor and the precision of the third temperature sensor are within ±0.3 ℃, the precision of the second temperature sensor is within ±0.1 ℃, the precision of the first valve and the precision of the second valve are within 1%, and the precision of the first flow sensor and the precision of the second flow sensor are within 1%.
Optionally, the high-precision temperature control system further comprises a fourth temperature sensor or a first pressure sensor for monitoring the change of the load of the first heat exchanger, and/or a fifth temperature sensor or a second pressure sensor;
the fourth temperature sensor or the first pressure sensor is arranged at the first interface of the first heat exchanger, and the fifth temperature sensor or the second pressure sensor is arranged at the second interface of the first heat exchanger.
Optionally, in the high-precision temperature control system, the high-precision temperature control system further comprises a first mixer communicated with the first bypass branch and the second interface of the second heat exchanger, and a second mixer communicated with the second bypass branch and the first mixer; at least one baffle component is arranged in each of the first mixer and the second mixer, and a gap is reserved between the baffle component and the inner wall of the first mixer or the second mixer.
Optionally, in the high-precision temperature control system, the high-precision temperature control system further comprises a thermal buffer device, wherein the thermal buffer device is connected between the first heat exchanger and the second mixer; a drive pump is disposed between the second mixer and the first mixer.
Optionally, in the above high-precision temperature control system, the high-precision temperature control system further includes a third bypass branch connected with the first interface and the second interface of the first heat exchanger, where the third bypass branch is used to bypass part of working medium of the first interface of the first heat exchanger to the second interface of the first heat exchanger, and the third bypass branch is provided with a third valve.
By using the high-precision temperature control system provided by the utility model, temperature compensation is carried out through the first bypass branch and the second bypass branch, partial high-temperature heat exchange medium at the first interface of the first heat exchanger is conveyed to the first interface of the second heat exchanger through the first bypass branch and is mixed into the first mixed-temperature heat exchange medium, the flow rate of the first bypass branch is usually smaller, and the flow rate of the heat exchange medium of the first bypass branch is regulated through the first valve, so that high-precision fine adjustment of the temperature is realized. The adjusted first mixed temperature heat exchange medium is mixed with the heat exchange medium of the second bypass branch to form a second mixed temperature heat exchange medium, and the flow of the heat exchange medium of the second bypass branch is regulated specifically through a second valve. The temperature of the first mixed temperature heat exchange medium is further and accurately adjusted through the second bypass branch, so that the temperature control accuracy is improved, and the temperature difference range between the temperature of the second mixed temperature heat exchange medium and the temperature of the preset target heat exchange medium is (-0.1). In conclusion, the high-precision temperature control system provided by the application fully utilizes the heat of the high-temperature heat exchange medium wasted in an electric heating mode, can realize temperature compensation without a heater, reduces the loss of the whole system, and is beneficial to energy conservation. And the first bypass branch is matched with the second bypass branch, so that the temperature compensation precision is improved, and the high-precision control of the temperature control system is realized.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art temperature control system;
FIG. 2 is a schematic diagram of a high-precision temperature control system according to an embodiment of the present utility model.
The figures are marked as follows:
the heat pump comprises a first heat exchanger 1, a second heat exchanger 2, an inlet A1 of a first bypass branch, an outlet B1 of the first bypass branch, an inlet A2 of a second bypass branch, an outlet B2 of the second bypass branch, a first valve 31, a second valve 32, a first mixer 41, a second mixer 42, a heat buffer device 5 and a driving pump 6.
Detailed Description
The embodiment of the utility model discloses a high-precision temperature control system which does not need a heater and can improve the temperature control precision.
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a high-precision temperature control system according to an embodiment of the utility model.
In one embodiment, the high-precision temperature control system provided by the utility model comprises a first heat exchanger 1, a second heat exchanger 2, a first bypass branch, a second bypass branch, a first valve 31 and a second valve 32. The first heat exchanger 1 is used as a terminal heat exchanger and is used for exchanging heat with parts or the environment needing cooling. The second heat exchanger 2 is used for cooling the high-temperature heat exchange medium flowing out of the first heat exchanger 1. It will be appreciated that the heat exchange medium includes, but is not limited to, a cooling fluid such as cooling water, and a fluid such as a gas may be used as desired. The first interface of the first heat exchanger 1 is communicated with the first interface of the second heat exchanger 2, and the second interface of the second heat exchanger 2 is communicated with the first interface of the first heat exchanger 1 through a first bypass branch and a second bypass branch. The first interface of the first heat exchanger 1 is a water return port of the high-precision temperature control system, the second interface of the first heat exchanger 1 is a water outlet of the temperature control system, a high-precision temperature control heat exchange medium flowing out of the water outlet of the high-precision temperature control system is supplied to a device needing cooling through the first heat exchanger 1, the heat exchange medium of the water return port of the temperature control system exchanges heat with a part or environment needing cooling in the first heat exchanger 1, absorbs heat of the part or environment needing cooling, and then flows through the second heat exchanger 2 to be cooled.
The inlet A1 of the first bypass branch is connected with the first interface of the first heat exchanger 1, the outlet B1 of the first bypass branch is connected with the second interface of the second heat exchanger 2 and is connected with the outlet B2 of the second bypass branch together, so that the heat exchange medium of the first bypass branch and the heat exchange medium of the second interface of the second heat exchanger 2 are mixed into a first mixed temperature heat exchange medium and then are mixed with the heat exchange medium of the second bypass branch. A first valve 31 is provided in the first bypass branch to regulate the flow of the outlet B1 of the first bypass branch. The inlet A2 of the second bypass branch is specifically connected with the outlet of the first valve 31 of the first bypass branch, that is, the heat recovery of the second bypass branch can be split from the first bypass branch, so that the heat exchange medium with higher temperature is introduced into the first mixed temperature heat exchange medium, and the temperature is regulated with further high precision. A second valve 32 is provided in the second bypass branch to regulate the flow of the outlet B1 of the second bypass branch. The flow rate of the first valve 31 and the second valve 32 is adjusted to adjust the temperature of the first mixed temperature heat exchange medium and the temperature of the second mixed temperature heat exchange medium until the temperature difference between the temperature of the second mixed temperature heat exchange medium and the temperature of the preset target heat exchange medium is (-0.1). The temperature of the preset target heat exchange medium specifically may refer to a target temperature of the second interface of the first heat exchanger 1, specifically, the temperature of the first mixed temperature heat exchange medium may be adjusted to a temperature difference range (-0.3) deg.c with the temperature of the preset target heat exchange medium through the first bypass branch, and then the temperature difference range (-0.1) deg.c with the temperature of the second mixed temperature heat exchange medium through the second bypass branch.
By using the high-precision temperature control system provided by the utility model, temperature compensation is carried out through the first bypass branch and the second bypass branch, partial high-temperature heat exchange medium of the first interface of the first heat exchanger 1 is conveyed to the first interface of the second heat exchanger 2 through the first bypass branch and mixed into the first mixed-temperature heat exchange medium, the flow rate of the first bypass branch is usually smaller, and the flow rate of the heat exchange medium of the first bypass branch is regulated specifically through the first valve 31, so that high-precision fine adjustment of the temperature is realized, and the temperature difference range between the temperature of the first mixed-temperature heat exchange medium and the temperature of the preset target heat exchange medium is (-0.3). The adjusted first mixed temperature heat exchange medium is mixed with the heat exchange medium of the second bypass branch to form a second mixed temperature heat exchange medium, and the heat exchange medium of the second bypass branch is regulated specifically through the second valve 32. The temperature of the first mixed temperature heat exchange medium is further and accurately adjusted through the second bypass branch, so that the temperature control accuracy is improved, and the temperature difference range between the temperature of the second mixed temperature heat exchange medium and the temperature of the preset target heat exchange medium is (-0.1). In conclusion, the high-precision temperature control system provided by the application fully utilizes the heat of the high-temperature heat exchange medium wasted in an electric heating mode, can realize temperature compensation without a heater, reduces the loss of the whole system, and is beneficial to energy conservation. And the first bypass branch is matched with the second bypass branch, so that the temperature compensation precision is improved, and the high-precision control of the temperature control system is realized. In this embodiment, the high precision means that the required temperature control precision deviation value is within ±0.1 ℃ and the range thereof; for example: t+ -0.01deg.C, T+ -0.001 deg.C … …
The first valve 31 is an adjustable valve with an adjustable opening, and can be manually controlled to adjust the opening, at this time, the first valve 31 can be a mechanical valve, and the opening of the first valve can be slowly adjusted in a manual mode, or the first valve 31 can be an electronic valve, and the opening of the first valve can be controlled and adjusted by a controller of the system.
In one embodiment, the high-precision temperature control system further comprises a first temperature sensor for detecting the temperature of the first mixed temperature heat exchange medium, and the first temperature sensor is used for detecting the temperature of the first mixed temperature heat exchange medium, so that a basis can be provided for the flow adjustment of the first bypass branch, namely, the opening degree of the first valve 31 is adjusted according to the temperature of the first mixed temperature heat exchange medium, so that the flow of the first bypass branch is changed, and the control precision is further improved.
In one embodiment, the high-precision temperature control system further comprises a controller, wherein the controller is used for controlling the opening degree of the first valve 31 according to the detection value of the first temperature sensor, so that the flow rate of the heat exchange medium of the first bypass branch is adjusted by controlling the opening degree of the first valve 31, and is made to be (0.1-10)% of the flow rate of the heat exchange medium of the second interface of the second heat exchanger 2. The controller controls the flow of the first bypass branch in the numerical range according to the first temperature sensor, so that the high-precision requirement of the temperature control system can be met. The smaller the flow, the higher its relative accuracy, due to the first bypass branch as a temperature compensating adjustment replacing a conventional heater.
In one embodiment, the high-precision temperature control system further comprises a second temperature sensor for detecting the temperature of the second mixed temperature heat exchange medium, and the second temperature sensor is used for detecting the temperature of the second mixed temperature heat exchange medium, so that a basis can be provided for adjusting the flow rate of the second bypass branch, namely, the opening degree of the second valve 32 is adjusted according to the temperature of the second mixed temperature heat exchange medium, so that the flow rate of the second bypass branch is changed, and the control precision is further improved.
Similarly, the second valve 32 is an adjustable valve with an adjustable opening, which can be manually controlled to adjust the opening, at this time, the second valve 32 may be a mechanical valve, and the opening of the second valve may be slowly adjusted manually, or the second valve 32 may be an electronic valve, which may be controlled by a controller of the system and adjust the opening of the second valve, in this embodiment, the second valve 32 is preferably an electronic valve, and the opening of the second valve is controlled by the controller, so that the adjustment accuracy is higher.
In one embodiment, the controller is configured to control the opening of the second valve 32 according to the detection value of the second temperature sensor, so as to adjust the flow rate of the heat exchange medium of the second bypass branch by controlling the opening of the second valve 32, so that the flow rate of the heat exchange medium of the second bypass branch is (0.1-10)% of the flow rate of the heat exchange medium of the first bypass branch. The controller controls the flow of the second bypass branch in the numerical range according to the second temperature sensor, so that the high-precision requirement of the temperature control system can be met. The smaller the flow of the second bypass branch, the higher its relative accuracy.
In one embodiment, the high-precision temperature control system further comprises a third temperature sensor for detecting the temperature of the heat exchange medium of the second interface of the second heat exchanger 2. It will be appreciated that the third temperature sensor should be located before the point where the first bypass branch communicates with the second interface of the second heat exchanger 2 so that the two are mixed. The temperature of the second port of the second heat exchanger 2 is detected by the third temperature sensor, so that the flow rate of the first bypass branch is adjusted accordingly according to the temperature, i.e. the opening degree of the first valve 31 is controlled according to the temperature of the heat exchange medium of the second port of the second heat exchanger 2, thereby changing the flow rate in the first bypass branch.
In this way, the opening of the first valve 31 and the second valve 32 can be precisely controlled by the detection value of the first temperature sensor, the detection value of the second temperature sensor, the detection value of the third temperature sensor and the temperature value of the preset target heat exchange medium, so that the flow of the heat exchange medium of the first bypass branch and the second bypass branch can be precisely adjusted, the temperatures of the first mixed temperature heat exchange medium and the second mixed temperature medium can be adjusted, the temperature difference range between the temperature of the first mixed temperature heat exchange medium and the temperature of the preset target heat exchange medium is (-0.3) DEG C until the temperature difference range between the temperature of the first mixed temperature heat exchange medium and the temperature of the preset target heat exchange medium is (-0.1) DEG C, and the adjustment precision is higher.
Further, the controller also controls the opening of the first valve 31 according to the detection value of the third temperature sensor. The controller controls the opening of the first valve 31 according to the detection value of the first temperature sensor and the third temperature sensor, so that the control precision is further improved, and the influence of the temperature fluctuation of the heat exchange medium of the second interface of the second heat exchanger 2 on the temperature control precision of the mixed temperature heat exchange medium is reduced.
In one embodiment, the high-precision temperature control system further comprises a first flow sensor for detecting the flow of the first bypass branch working fluid. And feeding back the flow of the first bypass branch through the first flow sensor, namely, feeding back and adjusting according to the detection value of the flow of the first bypass branch so as to accurately control the flow of the first bypass branch and the second bypass branch. Further, the controller also controls the opening degree of the first valve 31 and the opening degree of the second valve 32 according to the detection value of the first flow sensor, thereby precisely controlling the flow rate values of the first bypass branch and the second bypass branch.
In one embodiment, the high-precision temperature control system further comprises a second flow sensor arranged at the first interface of the first heat exchanger 1, wherein the second flow sensor is used for detecting the flow of the heat exchange medium at the first interface of the first heat exchanger 1. By feeding back the flow rate of the first port of the first heat exchanger 1 through the second flow rate sensor, the opening of the first valve 31 and the opening of the second valve 32 can be controlled according to the detected value of the flow rate of the first port of the first heat exchanger 1, so that the flow rates in the first bypass branch and the second bypass branch are changed, and the flow rates of the first bypass branch and the second bypass branch can be accurately controlled. Further, the controller also controls the opening degree of the first valve 31 and the opening degree of the second valve 32 according to the detection value of the second flow sensor.
In one embodiment, to ensure the high precision of the high precision temperature control system, the precision of the first temperature sensor and the third temperature sensor are within ±0.3 ℃ and within ±0.1 ℃ and the precision of the second temperature sensor is within ±1% and the precision of the first valve 31 and the second valve 32 are within 1% and within the first flow sensor and the second flow sensor, so that the high precision temperature control system can be applied to the high precision adjustment system, the temperature adjustment of equipment with high precision heat dissipation requirement can be performed, and the high precision requirements of the high precision temperature adjustment system on the temperature monitoring and the valve opening degree can be met, so that the high precision adjustment of the temperature control system is matched.
In one embodiment, the high-precision temperature control system further comprises a fourth temperature sensor or a first pressure sensor for monitoring the change of the load of the first heat exchanger 1, and/or a fifth temperature sensor or a second pressure sensor, wherein the fourth temperature sensor or the first pressure sensor is arranged at the first interface of the first heat exchanger 1, and the fifth temperature sensor or the second pressure sensor is arranged at the second interface of the first heat exchanger 1; by monitoring the change of the temperature or the pressure of the first interface and/or the second interface of the first heat exchanger 1, the change of the load of the first heat exchanger 1 can be monitored, namely, the change of heat exchange carried out by monitoring the parts or the environment which need to be cooled by the first heat exchanger 1 can be monitored, and when the heat exchange amount requirement of the load is increased or reduced, the temperature control temperature of the whole high-precision temperature control system can be timely adjusted, so that the temperature control temperature is always matched with the heat exchange requirement of the load.
The opening of the first valve 31 and the opening of the second valve 32 can be controlled by timely adjustment through the temperature detected by the fourth temperature sensor or the pressure detected by the first pressure sensor or the temperature detected by the fifth temperature sensor or the pressure detected by the second pressure sensor, so that the flow adjustment of the first bypass branch and the second bypass branch is realized, and the temperature of the second mixed temperature heat exchange medium can reach the updated temperature of the preset target heat exchange medium.
Further, the controller adjusts the preset target heat exchange medium temperature of the second interface of the first heat exchanger 1 according to the heat exchange medium temperature or pressure of the second interface of the first heat exchanger 1 and/or the heat exchange medium temperature or pressure of the first interface of the first heat exchanger 1. The detection of pressure can translate feedback to the corresponding flow. When the load at the tail end changes, the opening of the first valve 31 and the opening of the second valve 32 are correspondingly adjusted after the temperature or the flow of the water return port, the temperature or the flow of the water outlet or the temperature difference or the flow of the water return port and the temperature difference or the flow of the water outlet are fed back through the fourth temperature sensor or the first pressure sensor and/or the fifth temperature sensor or the second pressure sensor, so that accurate control is realized.
In one embodiment, the high-precision temperature control system further comprises a first mixer 41 for mixing the heat exchange medium of the first bypass branch with the heat exchange medium of the second interface of the second heat exchanger 2 to form a first mixed temperature heat exchange medium, and a second mixer 42 for mixing the heat exchange medium of the second bypass branch with the first mixed temperature heat exchange medium to form a second mixed temperature heat exchange medium. Specifically, the outlet B1 of the first bypass branch and the second interface of the second heat exchanger 2 are respectively connected with the inlet of the first mixer 41, the outlet of the first mixer 41 is connected with the inlet of the second mixer 42, the first bypass branch is connected with the inlet of the second mixer 42, and the outlet of the second mixer 42 is connected with the second interface of the first heat exchanger 1. By setting the first mixer 41, the uniform mixing of the temperatures is accelerated, and the efficiency and the accuracy of the whole high-precision temperature control system are improved. In other embodiments, the first mixer 41 may not be provided, for example, the outlet B1 of the first bypass branch is connected to the second port of the second heat exchanger 2 via the inlet manifold, and mixed in the manifold. Specifically, in the case where the first mixer 41 is provided, the first temperature sensor may be provided at the outlet of the first mixer 41 to detect the temperature of the first mixed temperature heat exchange medium at the outlet of the first mixer 41. The second mixer 42 is arranged in a similar manner and functions to the first mixer 41, and will not be described again here.
In one embodiment, at least one blocking member is provided in each of the first and second mixers 41 and 42, with a gap between the blocking member and the inner wall of the corresponding first or second mixer 41 or 42. That is, the barrier member is in a semi-closed state, and the barrier member is provided to guide the fluid in the first mixer 41 and the second mixer 42 and to extend the flow path in the first mixer 41 and the second mixer 42 so that the mixing thereof is more uniform. The barrier member is specifically a barrier.
In one embodiment, the high-precision temperature control system further comprises a thermal buffer device 5, the thermal buffer device 5 being connected between the second interface of the first heat exchanger 1 and the outlet of the second mixer 42. Through the setting of thermal buffer 5 to adjust the stability of temperature, make through the high accuracy fine setting of second bypass branch road realization temperature after, the temperature is further stable, and provide the second interface of first heat exchanger 1 with the heat transfer medium of temperature stability, realize accurate control.
Further, a drive pump 6 is provided between the second mixer 42 and the first mixer 41. By providing the driving pump 6, power is provided for the flow of the first mixed temperature heat exchange medium.
In one embodiment, a collection tank for storing the first mixed temperature heat exchange medium is also provided between the second mixer 42 and the first mixer 41. Through the setting of collecting box, can provide bigger buffer memory space for first heat transfer medium that mixes, make it realize better mixing in it, make the temperature of first heat transfer medium that mixes more even to further promote high-accuracy temperature control system's precision and stability.
In one embodiment, the high-precision temperature control system further comprises a third bypass branch connected with the first interface and the second interface of the first heat exchanger 1 respectively, the third bypass branch is used for bypassing part of working medium of the first interface of the first heat exchanger 1 to the second interface of the first heat exchanger 1, and the third bypass branch is provided with a third valve for controlling the flow of the third bypass branch. The third bypass branch is used for introducing the second mixed temperature heat exchange medium into the first interface of the first heat exchanger 1. By the arrangement of the third bypass branch, the flow regulation of the system can be realized to control the flow of the heat exchange medium flowing into the first heat exchanger 1.
Specifically, the third valve is a three-way valve, the first interface of the three-way valve is connected with the first interface of the first heat exchanger 1, the second interface is connected with the second interface of the first heat exchanger 1, the third interface is connected with the outlet of the second bypass branch, for example, the outlet of the second mixer 42 or the outlet of the thermal buffer device 5, and the third interface of the three-way valve is respectively communicated with the first interface of the three-way valve and the second interface of the three-way valve.
In one embodiment, the second heat exchanger 2 is externally connected with at least one of a compressor cooling circuit and a cooling water cooling circuit. The heat exchange medium flowing through the second heat exchanger 2 is cooled by the compressor cooling circuit or the cooling water cooling circuit to reach the temperature close to the water outlet. The compressor cooling loop or the cooling water cooling loop is adopted, so that the cooling efficiency is high. In other embodiments, the second heat exchanger 2 may also be cooled by a fan or the like.
In one embodiment, the second heat exchanger 2 is only externally connected with a cooling water cooling loop, the second heat exchanger 2 comprises a third interface and a fourth interface which are communicated, the third interface is a cooling medium outlet, and the fourth interface is a cooling medium inlet, so that the heat exchange medium in the second heat exchanger 2 is cooled through the externally connected cooling medium. The specific third interfaces can be respectively connected with temperature sensors for respectively detecting the temperature of the cooling medium.
In one embodiment, the cooling water cooling loop comprises a third heat exchanger, the compressor cooling loop comprises an expansion valve, a bypass valve and a compressor, the second heat exchanger 2 comprises a third interface and a fourth interface which are communicated, the third interface is connected with the first interface of the third heat exchanger through the expansion valve, the second interface of the third heat exchanger is connected with the fourth interface of the second heat exchanger 2 through the compressor, the bypass valve is connected between the first interface of the third heat exchanger and the second interface of the second heat exchanger 2, and the third heat exchanger is externally connected with a cooling medium. The cooling medium connected to the inside and the outside of the third heat exchanger firstly cools the heat exchange medium in the third heat exchanger, and the heat exchange medium subjected to preliminary cooling is further cooled under the action of the compressor, so that the heat exchange medium in the second heat exchanger 2 is cooled. The specific third heat exchanger comprises a third interface and a fourth interface which are communicated, wherein the third interface is a cooling medium outlet, and the fourth interface is a cooling medium inlet, so that the heat exchange medium in the third heat exchanger is cooled through an external cooling medium. The third interface and the fourth interface of the specific third heat exchanger can be respectively connected with temperature sensors so as to be respectively used for detecting the temperature of the cooling medium. An expansion valve and bypass valve in the compressor cooling circuit may be used to prevent compressor overheating and hot gas bypass.
In other embodiments, the cooling water cooling circuit may not be provided, and the heat exchange medium in the second heat exchanger 2 may be cooled only by the compressor cooling circuit. Specifically, according to the load change, when the cooling water cooling loop can meet the load requirement, the cooling water cooling loop is preferably selected, and when the cooling water cooling loop does not meet the load requirement, the cooling capacity or the temperature difference can be supplemented by the compressor cooling loop through adopting the compressor cooling loop alone or adopting the combination of the compressor cooling loop and the cooling water cooling loop.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The high-precision temperature control system is characterized by being applied to equipment with high-precision heat dissipation requirements, and comprises a first heat exchanger (1) and a second heat exchanger (2), wherein a first interface of the first heat exchanger (1) is communicated with a first interface of the second heat exchanger (2);
the inlet (A1) of the first bypass branch is connected with a first interface of the first heat exchanger (1), and the outlet (B1) of the first bypass branch is communicated with a second interface of the second heat exchanger (2);
a second bypass branch, the inlet (A2) of which communicates with the first bypass branch, the outlet (B2) of which communicates with the second interface of the second heat exchanger (2); the second heat exchanger (2), the outlet (B1) of the first bypass branch and the outlet (B2) of the second bypass branch are sequentially arranged;
a first valve (31) is provided in the first bypass passage, and a second valve (32) is provided in the second bypass passage.
2. The high-precision temperature control system according to claim 1, further comprising a first temperature sensor for detecting a first mixed temperature heat exchange medium temperature obtained by mixing the heat exchange medium of the first bypass branch and the heat exchange medium of the second interface of the second heat exchanger (2), and a second temperature sensor for detecting a second mixed temperature heat exchange medium temperature obtained by mixing the heat exchange medium of the second bypass branch and the first mixed temperature heat exchange medium.
3. The high-precision temperature control system according to claim 2, further comprising a third temperature sensor for detecting the temperature of the heat exchange medium of the second interface of the second heat exchanger (2).
4. The high-precision temperature control system of claim 3, further comprising a first flow sensor for detecting a flow of the first bypass branch heat exchange medium.
5. The high-precision temperature control system according to claim 4, further comprising a second flow sensor provided at a first interface of the first heat exchanger (1).
6. The temperature control system of claim 5, wherein the first temperature sensor and the third temperature sensor each have a precision of + -0.3 ℃ and less, the second temperature sensor has a precision of + -0.1 ℃ and less, the first valve and the second valve each have a precision of 1% and less, and the first flow sensor and the second flow sensor each have a precision of 1% and less.
7. High-precision temperature control system according to claim 2, further comprising a fourth temperature sensor or a first pressure sensor for monitoring a change in the load of the first heat exchanger (1), and/or a fifth temperature sensor or a second pressure sensor;
the fourth temperature sensor or the first pressure sensor is arranged at a first interface of the first heat exchanger (1), and the fifth temperature sensor or the second pressure sensor is arranged at a second interface of the first heat exchanger (1).
8. The high-precision temperature control system according to any one of claims 1-7, further comprising a first mixer (41) in communication with the first bypass branch and the second interface of the second heat exchanger (2), and a second mixer (42) for communicating with the second bypass branch and the outlet of the first mixer (41); at least one baffle component is arranged in each of the first mixer (41) and the second mixer (42), and a gap is formed between the baffle component and the inner wall of the first mixer (41) or the second mixer (42).
9. The high-precision temperature control system according to claim 8, further comprising a thermal buffer device (5), the thermal buffer device (5) being connected between the first heat exchanger (1) and the second mixer (42); a drive pump (6) is arranged between the second mixer (42) and the first mixer (41).
10. The high-precision temperature control system according to claim 1, further comprising a third bypass branch connected with the first interface and the second interface of the first heat exchanger (1), wherein the third bypass branch is used for bypassing part of working medium of the first interface of the first heat exchanger (1) to the second interface of the first heat exchanger (1), and the third bypass branch is provided with a third valve.
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| CN202321676558.2U CN220624330U (en) | 2023-06-28 | 2023-06-28 | High-precision temperature control system |
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| CN202321676558.2U CN220624330U (en) | 2023-06-28 | 2023-06-28 | High-precision temperature control system |
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