CN220625027U

CN220625027U - Temperature control system

Info

Publication number: CN220625027U
Application number: CN202321677471.7U
Authority: CN
Inventors: 宋斌; 刘翔; 吴刚; 杨斌; 梁健泮
Original assignee: Shenzhen Envicool Technology Co Ltd
Current assignee: Shenzhen Envicool Technology Co Ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2024-03-19
Anticipated expiration: 2033-06-28

Abstract

The utility model relates to the technical field of temperature control, and particularly discloses a temperature control system which comprises 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 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, 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 are mixed into a mixed temperature heat exchange medium and flow into the second interface of the first heat exchanger; the first valve is arranged on the first bypass branch. By introducing the first bypass branch, the temperature control system provided by the utility model carries out high-precision fine adjustment on the temperature, fully utilizes the heat wasted by the high-temperature heat exchange medium, reduces the loss of the whole system and is beneficial to energy conservation.

Description

Temperature control system

Technical Field

The utility model relates to the technical field of temperature control, in particular to a 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 through a heater 03 and a thermal buffer 04 in sequence, the first heat exchanger 01 is a terminal heat exchanger, after heat exchange with 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 the 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 standard reaching of the temperature and smaller fluctuation are rapidly realized. However, the heater is adopted for temperature compensation, and the loss of the whole system is increased due to the fact that the heater is used as a power consumption device, so that the PUE (Power Usage Effectiveness) is improved, and energy conservation is not facilitated.

In summary, how to perform temperature compensation without a heater, thereby improving the problem of higher energy consumption of the cooling system, and the like, is a problem that needs to be solved by those skilled in the art at present.

Disclosure of Invention

In view of the above, the present utility model is directed to a temperature control system, in which the structural design of the system loop can avoid the need of temperature compensation by a heater, so as to solve the problem of high energy consumption of the cooling system.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a temperature control system for use with equipment having high precision heat dissipation requirements, the temperature control system comprising:

the first interface of the first heat exchanger is communicated with the 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, 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 are mixed into a mixed temperature heat exchange medium and flow into the second interface of the first heat exchanger;

and the first valve is arranged on the first bypass branch.

Optionally, in the temperature control system, the temperature control system further includes a first temperature sensor for detecting a temperature of the mixed temperature heat exchange medium.

Optionally, the temperature control system further comprises a second temperature sensor for detecting the temperature of the heat exchange medium at the second interface of the second heat exchanger.

Optionally, in the temperature control system, the temperature control system further includes a first flow sensor for detecting the flow of the first bypass branch working medium.

Optionally, in the temperature control system, the temperature control system further comprises a second flow sensor arranged at the first interface of the first heat exchanger.

Optionally, in the temperature control system, the accuracy of the first temperature sensor and the second temperature sensor is ±0.3 degrees or less, the accuracy of the first valve is 1% or less, and the accuracy of the first flow sensor and the second flow sensor is 1% or less.

Optionally, the temperature control system further comprises a third temperature sensor or a first pressure sensor for monitoring the change of the load of the first heat exchanger, and/or a fourth temperature sensor or a second pressure sensor;

the third temperature sensor or the first pressure sensor is arranged at the first interface of the first heat exchanger, and the fourth temperature sensor or the second pressure sensor is arranged at the second interface of the first heat exchanger.

Optionally, in the temperature control system, the temperature control system further includes a mixer for mixing the heat exchange medium of the first bypass branch and the heat exchange medium of the second interface of the second heat exchanger into a mixed temperature heat exchange medium, and the mixer is connected with the outlet of the first bypass branch and the second interface of the second heat exchanger respectively; at least one baffle component is arranged in the mixer, and a gap is reserved between the baffle component and the inner wall of the mixer.

Optionally, in the temperature control system, the temperature control system further comprises a thermal buffer device, wherein the thermal buffer device is connected between the second interface of the first heat exchanger and the outlet of the mixer; a heater for adjusting the temperature of the mixed temperature heat exchange medium is further arranged between the thermal buffering device and the mixer, and a driving pump is arranged between the heater and the mixer; and a water tank for storing the mixed temperature heat exchange medium is also arranged between the driving pump and the mixer.

Optionally, in the above temperature control system, the temperature control system further includes a second bypass branch connected to the first interface and the second interface of the first heat exchanger, where the second bypass branch is used to bypass a part of working medium of the first interface of the first heat exchanger to the second interface of the first heat exchanger, and the second bypass branch is provided with a second valve.

The temperature control system comprises 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 communicated with a first interface of the second heat exchanger, an inlet of the first bypass branch is connected with the first interface of the first heat exchanger, an outlet of the first bypass branch is communicated with the second interface of the second heat exchanger, so that heat exchange media of the first bypass branch and heat exchange media of the second interface of the second heat exchanger are mixed into mixed temperature heat exchange media and flow into the second interface of the first heat exchanger, and the first valve is arranged on the first bypass branch.

According to the temperature control system provided by the utility model, the high-temperature heat exchange medium flowing out of the first interface of the first heat exchanger flows through the second heat exchanger to be cooled so as to achieve the temperature close to the target cooling temperature, the temperature is slightly lower than the target cooling temperature, part of the high-temperature heat exchange medium of 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 mixed with the first interface, the flow rate of the first bypass branch is usually smaller, so that the high-precision fine adjustment of the temperature is realized, the adjusted mixed-temperature heat exchange medium is conveyed to the second interface of the first heat exchanger, and after the first heat exchanger absorbs the heat of a device or environment needing to be cooled, the high-temperature heat exchange medium flows out of the first interface to form a circulation loop. In summary, according to the temperature control system provided by the utility model, the first bypass branch is introduced, so that the heat of the high-temperature heat exchange medium wasted in an electric heating mode is fully utilized, the temperature compensation can be realized without a heater, the loss of the whole system is reduced, and the energy conservation is facilitated.

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 temperature control system according to an embodiment of the present utility model;

FIG. 3 is a schematic illustration of a first valve connection;

FIG. 4 is a schematic illustration of another first valve connection;

FIG. 5 is a schematic diagram of a temperature control system according to another embodiment of the present utility model;

FIG. 6 is a schematic diagram of an external circuit of a second heat exchanger;

FIG. 7 is a schematic diagram of a temperature control system according to another embodiment of the present utility model.

The figures are marked as follows:

the heat exchanger comprises a first heat exchanger 1, a second heat exchanger 2, an inlet A of a first bypass branch, an outlet B of the first bypass branch, a first valve 3, a mixer 4, a baffle member 41, a thermal buffer 5, a compressor cooling circuit 6, an expansion valve 61, a bypass valve 62, a compressor 63, a cooling water cooling circuit 7, a third heat exchanger 71, a second valve 8, a driving pump 9, a water tank 10 and a heater 11.

Detailed Description

The embodiment of the utility model discloses a temperature control system which is used for distributing waste heat through flow regulation to realize temperature compensation and reduce the energy consumption of the temperature compensation.

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.

The temperature control system provided by the utility model is applied to equipment with high-precision heat dissipation requirement, and partial high-temperature heat exchange medium of the first heat exchanger 1 is introduced into the outlet of the second heat exchanger 2 by introducing the first bypass branch, namely, the waste heat of the high-temperature heat exchange medium is utilized to realize the fine adjustment of the outlet temperature. The arrangement of the main cooling circuit formed by the first heat exchanger 1 and the second heat exchanger 2 can be referred to a conventional cooling system structure. The high precision means that the required temperature control precision deviation value is within the target temperature + -0.3 deg.c and the range thereof.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a temperature control system according to an embodiment of the utility model.

In one embodiment, the temperature control system provided by the utility model comprises a first heat exchanger 1, a second heat exchanger 2, a first bypass branch and a first valve 3. 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. The first interface of the first heat exchanger 1 is a water return port of the temperature control system, the second interface of the first heat exchanger 1 is a water outlet of the temperature control system, high-precision temperature-controlled heat exchange medium flowing out of the water outlet of the 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, and after absorbing heat of the part or environment needing cooling, the heat exchange medium flows through the second heat exchanger 2 to be cooled. And the inlet A of the first bypass branch is connected with the first interface of the first heat exchanger 1, the outlet B of the first bypass branch is communicated with the second interface of the second heat exchanger 2, 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 mixed temperature heat exchange medium and flow into the second interface of the first heat exchanger 1, and the first valve 3 is arranged in the first bypass branch. The first valve can be used for adjusting the flow of the heat exchange medium of the first bypass branch so as to adjust the temperature of the mixed temperature heat exchange medium until the temperature difference range between the temperature of the mixed temperature heat exchange medium and the temperature of the preset target heat exchange medium is-0.3 ℃. The temperature of the preset target heat exchange medium may specifically refer to the target temperature of the second interface of the first heat exchanger 1.

According to the temperature control system provided by the utility model, the high-temperature heat exchange medium flowing out of the first interface of the first heat exchanger 1 flows through the second heat exchanger 2 to be cooled so as to achieve the temperature close to the target cooling temperature, the temperature is slightly lower than the target cooling temperature, part of the 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, the flow rate of the first bypass branch is usually smaller, so that the high-precision fine adjustment of the temperature is realized, the adjusted mixed-temperature heat exchange medium is conveyed to the second interface of the first heat exchanger 1, and after the first heat exchanger 1 absorbs the heat of a device or environment needing cooling, the high-temperature heat exchange medium flows out of the first interface to form a circulation loop. In summary, according to the temperature control system provided by the utility model, the first bypass branch is introduced, so that the heat wasted by the high-temperature heat exchange medium is fully utilized, the temperature compensation can be realized without arranging a heater, the loss of the whole system is reduced, and the energy conservation is facilitated.

In one embodiment, the outlet B flow of the first bypass branch is not higher than the flow of the second interface of the second heat exchanger 2. Specifically, the flow rate of the first bypass heat exchange medium is (0.1-10)% of the flow rate of the second interface heat exchange medium of the second heat exchanger 2. The heat exchange medium flowing out of the first interface of the first heat exchanger 1 can partially enter the first bypass branch, and partially enter the first interface of the second heat exchanger 2, specifically, the flow rate of the heat exchange medium entering the first bypass branch is regulated through the first valve 3, and the flow rate of the outlet B of the first bypass branch is controlled to be not higher than the flow rate of the second interface of the second heat exchanger 2, so that the temperature difference range between the temperature of the mixed temperature heat exchange medium and the temperature of the preset target heat exchange medium is-0.3 ℃, and the flow rate is generally smaller as the first bypass branch is used for replacing the temperature compensation regulation of the conventional heater, and the smaller the flow rate is, the higher the relative accuracy is.

The first valve 3 is an adjustable valve with an adjustable opening, and can be manually controlled to adjust the opening, at this time, the first valve 3 can be a mechanical valve, and the opening of the first valve can be slowly adjusted in a manual mode, or the first valve 3 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 temperature control system further comprises a first temperature sensor T1 for detecting the temperature of the mixed temperature heat exchange medium, and the first temperature sensor T1 is used for detecting the temperature of the mixed temperature heat exchange medium, so that a basis can be provided for adjusting the flow rate of the first bypass branch, namely, the opening degree of the first valve 3 is adjusted according to the temperature of the mixed temperature heat exchange medium, so that the flow rate of the first bypass branch is changed, and the control precision is further improved.

In one embodiment, the temperature control system further comprises a controller for controlling the opening degree of the first valve 3 according to the detection value of the first temperature sensor T1, so as to adjust the flow rate of the heat exchange medium of the first bypass branch by controlling the opening degree of the first valve 3, so that the flow rate of the heat exchange medium of the first bypass branch is (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 T1, and can meet the high-precision requirement of the temperature control system.

In one embodiment, the temperature control system further comprises a second temperature sensor T2 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 second temperature sensor T2 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 interface of the second heat exchanger 2 is detected through the second temperature sensor T2, so that the flow of the first bypass branch is conveniently and correspondingly adjusted according to the temperature, namely, the opening of the first valve 3 is controlled according to the temperature of the heat exchange medium of the second interface of the second heat exchanger 2, so that the flow in the first bypass branch is changed, and thus, the opening of the first valve 3 can be accurately controlled through the detection value of the first temperature sensor T1, the detection value of the second temperature sensor T2 and the temperature value of the preset target heat exchange medium, and the flow of the heat exchange medium of the first bypass branch is accurately adjusted, so that the temperature of the mixed temperature heat exchange medium is adjusted until the temperature difference range between the temperature of the mixed temperature heat exchange medium and the temperature of the preset target heat exchange medium is (-0.3) DEG C, and the adjustment accuracy is higher.

Further, the controller also controls the opening of the first valve 3 according to the detection value of the second temperature sensor T2. The controller controls the opening of the first valve 3 according to the detection value of the first temperature sensor T1 and the second temperature sensor T2, 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 temperature control system further comprises a first flow sensor F1 for detecting the flow of the first bypass branch working fluid. The flow of the first bypass branch is fed back through the first flow sensor F1, namely, feedback adjustment is carried out according to the detection value of the flow of the first bypass branch, so that the flow of the first bypass branch can be accurately controlled. Further, the controller also controls the opening degree of the first valve 3 according to the detection value of the first flow sensor F1.

In one embodiment, the temperature control system further comprises a second flow sensor F2 arranged at the first interface of the first heat exchanger 1, the second flow sensor F2 being configured to detect a flow of heat exchange medium at the first interface of the first heat exchanger 1. The flow rate of the first interface of the first heat exchanger 1 is fed back through the second flow sensor F2, so that the opening degree of the first valve 3 can be controlled according to the detection value of the flow rate of the first interface of the first heat exchanger 1, and the flow rate in the first bypass branch is changed, so that the flow rate of the first bypass branch is accurately controlled. Further, the controller also controls the opening degree of the first valve 3 according to the detection value of the second flow sensor F2, thereby precisely controlling the flow value of the first bypass branch.

In one embodiment, in order to ensure the high precision of the temperature control system, the precision of the first temperature sensor T1 and the second temperature sensor T2 are both ±0.03 ℃ and less, the precision of the first valve 3 is 1% and less, and the precision of the first flow sensor F1 and the second flow sensor F2 are both 1% and less, so that the temperature control system can be applied to a high-precision adjusting system to adjust the temperature of equipment with high-precision heat dissipation requirements, and the high-precision requirements of the high-precision temperature adjusting system on temperature monitoring and valve opening degree are met, so that the temperature control system is matched with the high-precision adjustment of the temperature control system.

In one embodiment, the temperature control system further comprises a third temperature sensor T3 or a first pressure sensor P1 for monitoring a change in the load of the first heat exchanger 1, and/or a fourth temperature sensor T4 or a second pressure sensor P2, wherein the third temperature sensor T3 or the first pressure sensor P1 is arranged at the first interface of the first heat exchanger 1 and the fourth temperature sensor T4 or the second pressure sensor P2 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 temperature control system can be timely adjusted, so that the temperature control temperature is always matched with the heat exchange requirement of the load.

In this way, the opening degree of the first valve 3 can be controlled by timely adjustment through the temperature detected by the third temperature sensor T3 or the pressure detected by the first pressure sensor P1 or the temperature detected by the fourth temperature sensor T4 or the pressure detected by the second pressure sensor P2, so that the flow rate of the first bypass branch is adjusted, and the temperature of the mixed temperature heat exchange medium can reach the temperature of the preset target heat exchange medium after load update.

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 3 is correspondingly adjusted after the temperature or flow of the water return port, the temperature or flow of the water outlet or the temperature difference or flow of the water outlet or both are fed back by the third temperature sensor T3 or the first pressure sensor P1 and/or the fourth temperature sensor T4 or the second pressure sensor P2, so that accurate control is realized.

In one 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, a first port of the two-way valve is connected with a first port of the first heat exchanger 1, and a second port of the two-way valve is communicated with a second port of the second heat exchanger 2. I.e. the first port of the two-way valve is the inlet a of the first bypass branch. In other embodiments, referring to fig. 4, the first valve 3 is a three-way valve, a first port of the three-way valve is connected with a first port of the first heat exchanger 1, a second port of the three-way valve is connected with a second port of the second heat exchanger 2, a third port of the three-way valve is connected with a first port of the second heat exchanger 2, and the first port of the three-way valve is respectively communicated with the second port and the third port, so as to regulate the flow of the first bypass branch through the three-way valve.

In one embodiment, referring to fig. 2, the temperature control system further includes a mixer 4, the mixer 4 mixes the heat exchange medium of the first bypass branch and the heat exchange medium of the second interface of the second heat exchanger 2 into a mixed temperature heat exchange medium, an inlet of the mixer 4 is connected to the outlet B of the first bypass branch and the second interface of the second heat exchanger 2, respectively, and an outlet of the mixer 4 is connected to the second interface of the first heat exchanger 1. Through the setting of blender 4, the even mixing of acceleration temperature promotes whole temperature control system's efficiency and precision. In other embodiments, the mixer 4 may not be provided, for example, the outlet B of the first bypass branch is connected to the second port of the first heat exchanger 1 via the inlet manifold, and mixed in the manifold, with the second port of the second heat exchanger 2. Alternatively, the outlet B of the first bypass branch is connected to a line between the second connection of the second heat exchanger 2 and the second connection of the first heat exchanger 1, so that mixing can also be achieved. Specifically, in the case where the mixer 4 is provided, the first temperature sensor T1 may be provided 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.

In one embodiment, at least one baffle member 41 is provided within the mixer 4, with a gap between the baffle member 41 and the inner wall of the mixer 4. That is, the barrier member 41 is in a semi-closed state, and the barrier member 41 is provided to guide the fluid in the mixer 4 and to extend the flow path in the mixer 4 so that the mixing thereof is more uniform. The barrier member 41 is specifically a partition plate.

In one embodiment, the 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 mixer 4. Through the setting of thermal buffer 5 to adjust the stability of temperature, make through the high accuracy fine setting of first 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 stable, realize accurate control.

In one embodiment, referring to fig. 5, a heater 11 for adjusting the temperature of the mixed temperature heat exchange medium is further arranged between the thermal buffering device 5 and the mixer 4, and a driving pump 9 is arranged between the heater 11 and the mixer 4; a water tank 10 for storing the mixed temperature heat exchange medium is also arranged between the driving pump 9 and the mixer 4. By providing the heater 11 behind the mixer 4, the heater 11 is able to further heat the mixed temperature heat exchange medium passing through the mixer 4 to achieve further temperature compensation. Through the combined action of the first bypass branch and the heater 11, multistage temperature compensation can be realized, so that the temperature control precision is further improved. And by driving the pump 9, power is provided for the flow of the mixed temperature heat exchange medium. In addition, through the setting of water tank 10, can provide bigger buffer memory space for heat transfer medium, make it realize better mixing in it, make heat transfer medium's temperature more even to further promote temperature control system's precision and stability. The outlet of the heater 11 may be provided with a seventh temperature sensor T7 and the outlet of the driving pump 9 may be provided with a third pressure sensor P3. An eighth temperature sensor T8 may be provided in the fluid-replenishing line of the tank 10.

In one embodiment, the second heat exchanger 2 is circumscribed by 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 of the water receiving outlet. The compressor cooling circuit 6 or the cooling water cooling circuit 7 is adopted, so that the cooling efficiency is high. In other embodiments, the second heat exchanger 2 may also be cooled by air cooling or the like.

In one embodiment, referring to fig. 2, the second heat exchanger 2 is only externally connected with a cooling water cooling circuit 7, the second heat exchanger 2 includes 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 by the externally connected cooling medium. Specifically, the third interface may be connected to the fifth temperature sensor T5, and the fourth interface may be connected to the sixth temperature sensor T6 and the third flow sensor F3, for cooling medium temperature detection, respectively.

In one 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 interface and a fourth interface which are communicated, the third interface is connected with the first interface of the third heat exchanger 71 through the expansion valve 61, the second interface of the third heat exchanger 71 is connected with the fourth interface of the second heat exchanger 2 through the compressor 63, the bypass valve 62 is connected between the first interface of the third heat exchanger 71 and the second interface of the second heat exchanger 2, and the third heat exchanger 71 is externally connected with a cooling medium. The cooling medium externally connected to the inside of the third heat exchanger 71 firstly cools the heat exchange medium therein, and the primarily cooled heat exchange medium is further cooled under the action of the compressor 63, thereby cooling the heat exchange medium in the second heat exchanger 2. The third heat exchanger 71 includes a third interface and a fourth interface, where the third interface is a cooling medium outlet, and the fourth interface is a cooling medium inlet, and the cooling medium in the third heat exchanger 71 is cooled by an external cooling medium. A third interface of the third heat exchanger 71 may be connected to the fifth temperature sensor T5, and a fourth interface may be connected to the sixth temperature sensor T6 for cooling medium temperature detection, respectively. The expansion valve 61 and the bypass valve 62 in the compressor cooling circuit 6 can be used to prevent overheating of the compressor 63 and hot gas bypass.

In other embodiments, the cooling water cooling circuit 7 may not be provided, and the heat exchange medium in the second heat exchanger 2 may be cooled only by the compressor cooling circuit 6. Specifically, according to the load change, when the cooling water cooling circuit 7 can meet the load requirement, the cooling water cooling circuit 7 is preferably selected, and when the cooling water cooling circuit 7 does not meet the load requirement, the difference of the cooling capacity or the temperature difference can be supplemented by the compressor cooling circuit 6 by adopting the compressor cooling circuit 6 alone or adopting the compressor cooling circuit 6 and the cooling water cooling circuit 7 in combination as shown in fig. 5.

In one embodiment, referring to fig. 7, the temperature control system further includes a second bypass branch, where the second bypass branch is connected to the first interface of the first heat exchanger 1 and the second interface of the first heat exchanger 1, the second bypass branch is used for bypassing a part of the working medium at the first interface of the first heat exchanger 1 to the second interface of the first heat exchanger 1, and a second valve 8 is disposed in the second bypass branch, and is used for adjusting the flow rate of the second bypass branch. The second bypass branch can introduce the mixed temperature heat exchange medium into the first interface of the first heat exchanger 1. By arranging the second bypass branch, the flow regulation of the system can be realized so as to control the flow of the heat exchange medium flowing into the first heat exchanger 1.

Specifically, the second valve 8 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 to the back of the connection position of the outlet B of the first bypass branch and the second interface of the second heat exchanger 2, 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 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

1. A temperature control system for use with equipment having high precision heat dissipation requirements, the temperature control system comprising:

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 (A) of the first bypass branch is connected with the first interface of the first heat exchanger (1), and the outlet (B) of the first bypass branch is communicated with the second interface of the second heat exchanger (2) 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 mixed temperature heat exchange medium and flow into the second interface of the first heat exchanger (1);

a first valve (3) is arranged in the first bypass branch.

2. The temperature control system of claim 1, further comprising a first temperature sensor for detecting a temperature of the mixed temperature heat exchange medium.

3. Temperature control system according to claim 2, further comprising a second temperature sensor for detecting the temperature of the heat exchange medium of the second interface of the second heat exchanger (2).

4. A temperature control system according to claim 3, further comprising a first flow sensor for detecting the flow of said first bypass branch fluid.

5. The temperature control system according to claim 4, further comprising a second flow sensor arranged at a first interface of the first heat exchanger (1).

6. The temperature control system according to claim 5, wherein the first and second temperature sensors each have a precision of ±0.3 degrees or less, the first valve (3) has a precision of 1% or less, and the first and second flow sensors each have a precision of 1% or less.

7. Temperature control system according to claim 2, further comprising a third temperature sensor or a first pressure sensor for monitoring a change in the load of the first heat exchanger (1), and/or a fourth temperature sensor or a second pressure sensor;

the third temperature sensor or the first pressure sensor is arranged at a first interface of the first heat exchanger (1), and the fourth temperature sensor or the second pressure sensor is arranged at a second interface of the first heat exchanger (1).

8. Temperature control system according to claim 1, further comprising a mixer (4) 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) into a mixed temperature heat exchange medium, the mixer (4) being connected to the outlet (B) of the first bypass branch and the second interface of the second heat exchanger (2), respectively; at least one baffle component (41) is arranged in the mixer (4), and a gap is reserved between the baffle component (41) and the inner wall of the mixer (4).

9. Temperature control system according to claim 8, further comprising a thermal buffer device (5), said thermal buffer device (5) being connected between the second interface of the first heat exchanger (1) and the outlet of the mixer (4); a heater (11) for adjusting the temperature of the mixed temperature heat exchange medium is further arranged between the thermal buffering device (5) and the mixer (4), and a driving pump (9) is arranged between the heater (11) and the mixer (4); a water tank (10) for storing the mixed temperature heat exchange medium is also arranged between the driving pump (9) and the mixer (4).

10. Temperature control system according to claim 1, further comprising a second bypass branch connected to the first and second interfaces of the first heat exchanger (1), respectively, the second bypass branch being used for bypassing part of the working medium of the first interface of the first heat exchanger (1) to the second interface of the first heat exchanger (1), and the second bypass branch being provided with a second valve (8).