A temperature control system

Abstract

The application discloses a temperature control system, comprising: an outlet end A and a return end B, which are used for connecting two ports of a cold source system with circulating power, respectively, and a first heat exchange device is arranged between the outlet end A and the return end B; at least two circulating branches, the inlets of which are connected to the outlet end A and the outlets of which are connected to the return end B; and at least two circulating systems, each of which is provided with a second heat exchange device and is connected to the corresponding circulating branch. The temperature control system can effectively reduce the overall volume, improve the system reliability, reduce the system operation energy consumption and reduce the use cost.

Description

Technical Field

[0001] This invention relates to the field of temperature control equipment technology, and more specifically, to a temperature control system. Background Technology

[0002] In the field of ultra-high precision micro-scale machining and measurement, a temperature control system is often required to provide a precise and stable temperature control environment to ensure that certain key technical indicators in process control are controllable.

[0003] In existing technologies, a temperature control system is formed by integrating a gas holder system and a water holder system. The cooling medium in the water holder system circulates multiple times and exchanges heat with the circulating air in the gas holder system to achieve the temperature control effect. The water holder system consists of a water supply circulation system powered by a water pump, a compressor refrigeration system, and a water cooling system.

[0004] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems:

[0005] The water supply circulation system includes components such as water pumps and water tanks, resulting in a large overall size and number of components in the temperature control system, and a high energy consumption during system operation. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a temperature control system to solve the problem that the large size of the temperature control system is caused by the large number of water supply devices in the water circulation system.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A temperature control system, comprising:

[0009] The outlet end A and the return end B are used to connect to the two ports of a cold source system with circulating power, respectively. A first heat exchange device is provided between the outlet end A and the return end B.

[0010] There are at least two loop branches, whose inlets are all connected to the outlet A and whose outlets are all connected to the return port B.

[0011] At least two circulation systems, each circulation system having a second heat exchange device, and the circulation system being connected to its corresponding circulation branch.

[0012] Preferably, there are two circulation branches, namely a first circulation branch and a second circulation branch; there are two circulation systems, namely a first circulation system and a second circulation system, with the second circulation system located at the end of the circulation heat exchange path;

[0013] The first circulation branch is used for heat exchange with the hot end of the first circulation system, and the second circulation branch is connected to the second circulation system and is used for heat exchange with the cold end of the first circulation system.

[0014] Preferably, the first circulation system includes a first heat exchange branch for exchanging heat with the first circulation branch, a second heat exchange branch for exchanging heat with the second circulation branch and connected to the first heat exchange branch, the second circulation branch and the second heat exchange branch form an evaporator, and the second heat exchange device corresponding to the first circulation system is the evaporator;

[0015] The second circulation system includes a third heat exchange branch that connects to the second circulation branch, and the second heat exchange device corresponding to the second circulation system is a heat exchanger that includes the third heat exchange branch.

[0016] Preferably, the first circulation branch includes a first end connected to the outlet end A, a second end connected to the return end B, and a heat exchange section connected between the first end and the second end, wherein the heat exchange section is used to exchange heat with the first heat exchange branch.

[0017] The first heat exchange branch has a chamber for the flow of cooling medium, and the water flow direction in the heat exchange section is opposite to the flow direction of the cooling medium in the first heat exchange branch.

[0018] Preferably, the second circulation system includes a water supply branch and a return water branch connected thereto;

[0019] The outlet A is connected to the water supply branch through the second circulation branch;

[0020] The water supply branch is connected to the return water branch through the third heat exchange branch, and the return water branch is connected to the return port B.

[0021] Preferably, the outlet A is connected to the second circulation branch via a pre-heat exchange branch, and the second circulation branch is connected to the water supply branch;

[0022] The return water branch is connected to the return port B via the reheat branch, and the preheat exchange branch and the reheat branch form a reheater.

[0023] Preferably, it also includes a circulating air path, which includes a return air branch and a supply air branch. The return air branch is connected to the supply air branch through a heat exchange air path, and the heat exchange air path and the third heat exchange branch form a heat exchanger.

[0024] A fan is installed on the return air branch, and the fan is used to send the return air in the return air branch into the heat exchanger.

[0025] Preferably, the first circulation system includes a circulation power element disposed between the first heat exchange branch and the second heat exchange branch, the circulation power element being used to realize the circulation flow of the cooling medium between the first heat exchange branch and the second heat exchange branch.

[0026] Preferably, the first heat exchange device is a condenser formed by the first heat exchange branch and the first circulation branch.

[0027] Preferably, the first circulation system includes a semiconductor cooler, the hot end of the semiconductor cooler and the first circulation branch form the first heat exchange device, and the cold end of the semiconductor cooler and the second circulation branch form the evaporator.

[0028] The temperature control system provided by this invention includes an outlet end A and an inlet end B, which are respectively used to connect to the two ports of a cold source system with circulating power. A first heat exchange device is provided between the outlet end A and the inlet end B. It also includes at least two circulation branches, the inlets of which are all connected to the outlet end A and the outlets of which are all connected to the inlet end B. The cold source system enables the cold source to circulate within the circulation branches. In the at least two circulation systems, the circulation system is equipped with a second heat exchange device. The circulation system is connected to its corresponding circulation branch, and the circulation branch provides a cold source to the circulation system, thereby providing a cooling effect through the cooling capacity of the cold source.

[0029] The beneficial effects of this invention are as follows: by utilizing a cold source system with circulating power to provide a cold source to at least two circulating branches, they can exchange heat with the circulating system separately, eliminating the need to arrange power devices for each corresponding circulating system, effectively reducing the size of the entire temperature control system, improving system reliability, reducing system operating energy consumption, and reducing operating costs. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the temperature control system provided by the present invention;

[0032] Figure 2 This is another structural schematic diagram of the temperature control system provided by the present invention.

[0033] Figures 1-2 In the accompanying drawings, the reference numerals include:

[0034] 1-Cold source system; 2-First circulation system; 3-Second circulation system; 4-Temperature control object; 5-First heat exchanger; 6-Evaporator; 7-Heat exchanger; 8-Regenerator;

[0035] 101 - First circulation branch; 102 - Second circulation branch; 103 - Preheat exchange branch;

[0036] 201-First heat exchange branch; 202-Second heat exchange branch; 203-Circulation power element; 204-Electronic bypass valve; 205-Drier filter; 206-Liquid line solenoid valve; 207-Liquid indicator; 208-Electronic expansion valve; 209-High pressure switch; 210-Exhaust temperature sensor; 211-Intake pressure sensor; 212-Intake temperature sensor;

[0037] 301-Third heat exchange branch; 302-Water supply branch; 303-Return water branch; 304-Heat recovery branch; 305-Flow branch; 306-Water heater; 307-Third detection element; 308-Return water thermometer; 309-Flow meter; 310-Return water pressure gauge; 311-Electric proportional three-way valve;

[0038] 401-Heat exchange air path; 402-Return air branch path; 403-Supply air branch path; 404-First detection element; 405-Second detection element; 406-Main control electric heating element; 407-Fan; 408-Fourth detection element. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] The core of this invention is to provide a temperature control system that is small in size, consumes little energy, and is low in cost. This temperature control system is applied in the field of ultra-high precision micro-scale machining and measurement, providing a precise and stable temperature control environment.

[0041] The outlet A and return B are used to connect to the two ports of the circulating cold source system 1, which are essentially the outlet and inlet of the cold source system 1. The cold source system 1 has a circulating power, which allows the cold source to circulate between the outlet A, the circulation branch, the return B, and the cold source system 1, maintaining the cooling capacity of the cold source within the circulation branch.

[0042] The cold source system 1 is specifically a system that can provide circulating power, such as a process water cooling system or a circulating water system.

[0043] Taking one specific implementation as an example, the cold source system 1 is a process water cooling system. The process water cooling system specifically includes a cold source unit, which is a structure that provides a cold source. The cold source can be water, coolant, helium, liquid nitrogen, etc., and can be flexibly selected and changed according to actual requirements.

[0044] The process water cooling system also includes a power unit, which is a component inherent to the system itself. This power unit provides a cooling source to at least two circulation branches, enabling the cold source to circulate within these branches. For example, if the cold source is water or a mixture of water and other substances, the power unit can be a pump.

[0045] The temperature control system also includes at least two circulation branches. The inlet of each circulation branch is connected to outlet A, and the outlet of each circulation branch is connected to return port B. If the cold source is cooling water, then outlet A is the water outlet, and return port B is the water return port. Under the circulation power of the cold source system 1, cooling water can flow from outlet A to the circulation branch, and the cooled water after heat exchange within the circulation branch flows back to return port B, ensuring the cooling capacity of the cold source within the circulation branch. It should be noted that at least two circulation branches are independently configured; the two circulation branches do not intersect and no heat exchange process occurs.

[0046] A first heat exchange device 5 is provided between the outlet end A and the return end B. The first heat exchange device 5 is specifically a condenser, which is used to convert the cold source in the high temperature and high pressure gas state into a liquid state to absorb the heat of the high temperature and high pressure gas, so that the cold source becomes liquid and its temperature decreases, and it continues to participate in the cycle.

[0047] The above process refers to at least two circulation branches, where "multiple" means three or more. The specific number of circulation branches depends on the actual application scenario. If multiple heat exchanges are required to improve temperature control stability and reliability, then multiple circulation branches can be set.

[0048] The temperature control system also includes at least two circulation systems, each equipped with a second heat exchange device, and the circulation systems are connected to the corresponding circulation branches.

[0049] If three circulation systems are set up, the heat exchange path will be the heat exchange process from the first circulation to the second circulation to the third circulation in sequence, that is, the heat exchange path is 1-2-3, and the circulation system at the end of the heat exchange path is the circulation system corresponding to the third circulation.

[0050] For example, if three circulation systems are configured, one of the three circulation systems can be connected to the corresponding circulation branch, and the remaining two can exchange heat with the corresponding circulation branch; or two of the three circulation systems can be connected to the corresponding circulation system, and the remaining one can exchange heat with the corresponding circulation branch. The above are merely examples and do not limit the specific implementation methods used in the combination.

[0051] In one specific implementation, the circulation branch is connected to its corresponding circulation system. In this case, the cold source of the circulation in the circulation branch is directly provided to the circulation system. This cold source exchanges heat with the second heat exchange device of the circulation system to obtain better cooling capacity. Then, the cold source is applied to the heat exchange of the temperature-controlled object 4 to ensure a better heat exchange effect.

[0052] The temperature control object 4 here can be either equipment or the environment, and is not limited to this application scenario. The environment is not limited to factories, offices, or classrooms; it can be flexibly applied to any place that requires cooling.

[0053] Taking a specific implementation as an example, the temperature-controlled object 4 has a circulating air path connected to the temperature-controlled environment. The circulating system located at the end of the circulating heat exchange exchanges heat with the circulating air path to achieve the effect of regulating the temperature of the temperature-controlled environment. The temperature-controlled environment is specifically the ambient temperature of any scenario requiring high-precision temperature control, without limiting the specific application scenario.

[0054] Specific adjustments can be made by controlling the start and stop of the circulation system, controlling the circulation speed of the circulation system, and controlling the start and stop of heating or cooling devices in the circulation system, based on the ratio of the actual temperature of the temperature control environment to the preset temperature.

[0055] The actual temperature of the specific temperature-controlled environment refers to the temperature value of the return air section of the temperature-controlled environment, while the adjusted temperature value is the temperature value of the air inlet section entering the temperature-controlled environment.

[0056] In this embodiment, the cold source system itself has the characteristic of circulating power to provide cold source to at least two circulation branches, so that they can exchange heat with the circulation system separately. There is no need to arrange power devices for each circulation system, which effectively reduces the size of the entire temperature control system, improves system reliability, reduces system operating energy consumption, and reduces operating costs.

[0057] Based on the above embodiments, please refer to Figure 1 , Figure 2 The circulation branch is specifically set up with two circulation branches, namely the first circulation branch 101 and the second circulation branch 102. The first circulation branch 101 and the second circulation branch 102 are both connected to the outlet end A and the return end B, that is, the cooling water can circulate in the first circulation branch 101 and the second circulation branch 102 to carry out the circulation cooling operation of the hot end of the first circulation system 2.

[0058] Two circulation systems are set up, specifically a first circulation system 2 and a second circulation system 3. In the two circulation systems, the second circulation system 3 is located at the end of the heat exchange path, that is, the second circulation system 3 is used to regulate the temperature of the temperature-controlled environment through heat exchange.

[0059] Specifically, the first circulation branch 101 is used for heat exchange with the hot end of the first circulation system 2. The hot end refers to the cooling medium in a gaseous, high-temperature, and high-pressure state. The cold source circulating within the first circulation branch 101 exchanges heat with the first circulation system 2 via the first heat exchange device 5. Specifically, the cold source circulating within the first circulation branch 101 provides cooling energy to the cooling medium in the first circulation system 2, causing it to liquefy. The liquefied cooling medium then continues to participate in the circulation of the first circulation system 2. This continued participation in the circulation means that the liquid cooling medium exchanges heat with the second circulation system 3, causing it to vaporize and form a gaseous state. The gaseous cooling medium then exchanges heat again through the first heat exchange device 5 and becomes liquid again, thus completing the cycle. In this method, the cold source and the cooling medium are of different types, such as cooling water as the cold source and refrigerant as the cooling medium. The refrigerant can switch between gaseous and liquid states.

[0060] The second circulation branch 102 connects to the second circulation system 3 and is used for heat exchange with the cold end of the first circulation system 2, where the cold end of the first circulation system 2 is in a liquid cooling medium. The cold source circulating through the second circulation branch 102 is directly supplied to the second circulation system 3. The cold source supplied to the second circulation system 3 first exchanges heat with the cooling medium (refrigerant) with cooling capacity circulating at the cold end of the first circulation system 2 to obtain cooling capacity before circulating in the second circulation system 3, further ensuring the heat exchange effect of the second circulation system 3.

[0061] The cold source in the second circulation system 3, after exchanging heat with the cooling medium, enters the circulation and exchanges heat with the circulating air path of the temperature-controlled object 4 to perform cooling and regulation operations on the circulating air path.

[0062] In this embodiment, both the first circulation system 2 and the second circulation system 3 utilize the cooling capacity provided by the cold source system 1 for heat exchange. By sharing a single cold source system 1, the use of power components for providing circulation power can be reduced, the volume of the entire temperature control system can be reduced, energy consumption can be reduced, the operational reliability of the temperature control system can be improved, and costs can be reduced.

[0063] Based on any of the above embodiments, please refer to Figure 1 The first circulation system 2 includes a first heat exchange branch 201 and a second heat exchange branch 202, and the second circulation system 3 includes a third heat exchange branch 301.

[0064] Both the first circulation branch 101 and the second circulation branch 102 are connected to the outlet end A and the return end B. Taking the cooling source in both the first circulation branch 101 and the second circulation branch 102 as an example, the cooling water can circulate in the first circulation branch 101 and the second circulation branch 102 to perform circulating cooling operations. Furthermore, the first circulation system 2 includes a first heat exchange branch 201. Specifically, after the cooling water in the first circulation branch 101 passes through the first heat exchange device 5, the gaseous refrigerant in the first heat exchange branch 201 of the first circulation system 2 is converted into a liquid state to achieve a heat exchange effect.

[0065] The first heat exchange branch 201 is connected to the second heat exchange branch 202. The second heat exchange branch 202 is used to exchange heat with the second circulation branch 102. Specifically, the cooling water circulating in the second circulation branch 102 exchanges heat with the liquid refrigerant in the second heat exchange branch 202 to reduce the temperature of the cooling water in the second circulation branch 102 so that it can participate in the third circulation system.

[0066] The second heat exchange branch 202 and the second circulation branch 102 form the evaporator 6. The second heat exchange device corresponding to the first circulation system 2 is the evaporator 6. After the refrigerant in the second heat exchange branch 202 exchanges heat with the cooling water circulating in the second circulation branch 102, the refrigerant absorbs heat in the evaporator 6 area and is converted into a gaseous state to form heat exchange between the second heat exchange branch 202 and the second circulation branch 102.

[0067] The second circulation system 3 includes a third heat exchange branch 301 connected to the second circulation branch 102. The second heat exchange device corresponding to the second circulation system 3 is a heat exchanger 7 including the third heat exchange branch 301. Here, the heat exchanger 7 also includes a circulation loop for heat exchange with the third heat exchange branch 301. The specific temperature control environment or object to which the circulation loop is applied is not limited here. The third heat exchange branch 301 is connected to the second circulation branch 102. Based on the fact that the second circulation branch 102 has already exchanged heat and formed cooling water with cold capacity in the evaporator 6 area, the temperature control effect can be achieved by exchanging heat with the circulation loop through this cold capacity.

[0068] In this embodiment, by utilizing the circulating power of the cold source system 1, the circulating system architecture of the second circulating system 3 is simplified, which can significantly reduce the number of key components and the system volume, and also has greater advantages in terms of energy saving, cost, and reliability. The components reduced in the second circulating system 3, such as water pumps and water tanks, are eliminated, and the overall system volume is greatly reduced, thereby significantly improving system reliability, reducing costs, and reducing system operating energy consumption.

[0069] In this embodiment, the cooling medium flow directions of the second circulation branch 102 and the second heat exchange branch 202 can be the same or opposite, and the cooling medium flow directions of the first heat exchange branch 201 and the first circulation branch 101 can also be the same or opposite. The aforementioned cooling medium, whether refrigerant, water, or other cooling media, can circulate regardless of the flow direction to ensure effective heat exchange and maintain the temperature control effect of the downstream temperature-controlled object 4.

[0070] In this embodiment, when the cooling medium in the first circulation system 2 is refrigerant, the first circulation system 2 further includes a dryer filter 205, a liquid pipe solenoid valve 206, a liquid level indicator 207, and an electronic expansion valve 208 located between the first heat exchange branch 201 and the second heat exchange branch 202; the dryer filter 205 is used to filter and purify the refrigerant in the first circulation system 2; the liquid level indicator 207 is used to determine the quality and water content of the refrigerant in the first circulation system 2; the liquid pipe solenoid valve 206 is used to control the opening and closing of the branch; and the electronic expansion valve 208 is used to regulate the amount of refrigerant supplied to the second heat exchange branch 202.

[0071] Furthermore, since the refrigerant has a high viscosity at low ambient temperatures, a small amount of refrigerant is first passed through the bypass branch of the electronic bypass valve 204 of the first heat exchange device 5 (condenser) to start the entire refrigeration cycle. The temperature of the entire system will gradually rise, the refrigerant viscosity will decrease, and the low-temperature refrigeration will proceed normally.

[0072] Based on any of the above embodiments, the first circulation branch 101 includes a first end connected to the outlet end A, a heat exchange section, and a second end connected to the return end B. The heat exchange section is used for heat exchange with the first heat exchange branch 201. Figure 1 and Figure 2 In this context, the heat exchange section is the part that forms a condenser with the first heat exchange branch 201.

[0073] The first heat exchange branch 201 has a chamber for cooling medium circulation, and the water flow direction in the heat exchange section is opposite to the cooling medium flow direction in the first heat exchange branch 201. For example... Figure 1 As shown by the middle arrow, the water in the heat exchange section flows downwards, while the cooling medium in the first heat exchange branch 201 flows upwards. Through the relative flow of the upper and lower parts, the cooling capacity of the refrigerant in the first circulation system 2 is maintained by the circulation of cooling water.

[0074] In this embodiment, the first circulation system 2 may be equipped with a compressor. The compressor pressurizes the refrigerant, which is in a gaseous state after exchanging heat with the cooling water in the second circulation system 3 in the evaporator 6, to form a high-temperature and high-pressure gas. The high-temperature and high-pressure refrigerant then enters the first heat exchange device 5 and exchanges heat with the cooling water in the first circulation branch 101 to form a liquid state. Subsequently, the liquid refrigerant flows back to the evaporator 6 along the refrigeration system pipelines and various valves to complete a complete cycle.

[0075] Based on any of the above embodiments, please refer to Figure 1 , Figure 2 The second circulation system 3 includes a water supply branch 302 and a return water branch 303 connected thereto; the outlet end A is connected to the water supply branch 302 through the second circulation branch 102; the water supply branch 302 is connected to the return water branch 303 through the third heat exchange branch 301, and the return water branch 303 is connected to the return outlet end B.

[0076] The cooling medium of the second circulation system 3 is the cooling water provided by the second circulation branch 102. Under the external circulation power provided by the cold source system 1 itself, the cooling water first flows from the outlet A through the evaporator 6 and is cooled down. Then it is transported through the water supply branch 302 to the third heat exchange branch 301 to absorb the heat of the air in the circulation air path and reduce the temperature of the air in the circulation air path. After that, it flows back to the return port B through the return water branch 303 to complete the entire circulation.

[0077] Based on any of the above embodiments, the outlet end A is connected to the second circulation branch 102 through the pre-heat exchange branch 103, and the second circulation branch 102 is connected to the water supply branch 302.

[0078] The return water branch 303 is connected to the return port B through the reheat branch 304, and the preheat exchange branch 103 and the reheat branch 304 form the reheater 8.

[0079] Please refer to Figure 2 A regenerator 8 for heat recovery is connected in series on the water supply branch 302 and the return branch 303 of the second circulation system 3. The regenerator branch 304 contains hot water, while the cooling water in the pre-heat exchange branch 103 can exchange heat in the regenerator 8. After heat exchange, it exchanges heat with the liquid refrigerant in the second heat exchange branch 202 in the evaporator 6, causing the liquid refrigerant to vaporize. By setting up the regenerator 8, the heat of the regenerator branch 304 can be utilized, thereby achieving the purpose of energy saving and improving the energy efficiency of the entire temperature control system.

[0080] Based on any of the above embodiments, please refer to Figure 1 , Figure 2 The first circulation system 2 includes a circulation power element 203 disposed between the first heat exchange branch 201 and the second heat exchange branch 202. The circulation power element 203 is used to realize the circulation flow of the cooling medium between the first heat exchange branch 201 and the second heat exchange branch 202.

[0081] For example, if the cooling medium is a refrigerant, then the circulating power element 203 is a compressor. After the gaseous refrigerant is compressed by the compressor, it is sent into the first heat exchange branch 201 and releases heat to the first circulation branch 101 in the condenser to complete the heat exchange. After the heat exchange, it becomes liquid and is sent to the second heat exchange branch 202 to exchange heat with the cooling water in the second circulation branch 102 in the evaporator 6.

[0082] Based on any of the above embodiments, the first heat exchange device 5 is a condenser formed by the first heat exchange branch 201 and the first circulation branch 101. The condenser converts the cold source, which is in a high-temperature and high-pressure gas state, into a liquid state to absorb the heat of the high-temperature and high-pressure gas, thereby lowering the temperature of the cold source and allowing it to continue participating in the circulation.

[0083] Based on any of the above embodiments, the first circulation system 2 includes a semiconductor cooler, the hot end of the semiconductor cooler and the first circulation branch 101 form a first heat exchange device 5, the first heat exchange device 5 is a condenser, and the cold end of the semiconductor cooler and the second circulation branch 102 form an evaporator 6.

[0084] In this embodiment, the hot end and cold end of the thermoelectric cooler absorb and release heat, respectively. Specifically, the thermoelectric cooler includes a hot-end heat sink plate with embedded steel pipes, a cold-end heat sink plate, and a thermoelectric cooling chip installed between the two heat sink plates. The medium in the pipes inside the hot-end and cold-end heat sink plates is liquid. The liquid in the hot-end heat sink plate exchanges heat with the first circulation branch 101, and the liquid in the cold-end heat sink plate exchanges heat with the second circulation branch 102, which is equivalent to the evaporator 6. The two ends absorb and release heat, respectively, thereby achieving the purpose of cooling.

[0085] Based on any of the above embodiments, please refer to Figure 1 , Figure 2 The circulating air path includes a return air branch 402 and a supply air branch 403. The return air branch 402 is connected to the supply air branch 403 through a heat exchange air path 401. The heat exchange air path 401 and the third heat exchange air path 301 form a heat exchanger 7. A fan 407 is installed on the return air branch 402. The fan 407 is used to send the return air in the return air branch 402 into the heat exchanger 7.

[0086] In the temperature-controlled object 4, the return air branch 402 sends the airflow in the temperature-controlled environment or object to the heat exchanger 7 to reduce the temperature. Driven by the fan 407, the airflow flows through auxiliary devices such as the main control electric heating element 406, and the temperature control accuracy is further improved to achieve the target temperature control accuracy requirement. The airflow is then transported to the temperature-controlled environment or object through the supply air branch 403, and finally achieves the application purpose.

[0087] The main control electric heating element 406 is mainly used to improve the temperature control accuracy of the airflow of the temperature-controlled object 4. This is because after the airflow is sent to the heat exchanger 7 to reduce its temperature, the gas needs to be further improved in temperature control accuracy through the operation of the main control electric heating element 406.

[0088] In this embodiment, temperature and humidity detection elements, pressure detection elements, etc. can be installed in the supply air branch 403 and return air branch 402 to achieve the effect of monitoring the operation status.

[0089] Based on any of the above embodiments, the return air branch 402 is provided with a first detection element 404 for detecting the temperature and humidity of the return air, the supply air branch 403 is provided with a second detection element 405 for detecting the temperature and humidity of the supply air, and the water supply branch 302 is provided with a third detection element 307 for detecting the temperature and humidity of the supply water.

[0090] The air supply branch 403 is also equipped with a main control electric heating element 406, and the water supply branch 302 is equipped with a water heater 306. The controller is used to control the operation of the main control electric heating element 406 and the water heater 306 based on the detection values ​​of the first detection element 404, the second detection element 405 and the third detection element 307, so as to improve the control accuracy and stability of the temperature control system and ensure the precise and stable control of the temperature of the temperature control environment.

[0091] For the temperature-controlled object 4, a fourth detection element 408 for detecting air supply pressure / speed is provided on the air supply branch 403. The fourth detection element 408 is connected to the controller signal to monitor the air supply pressure and air supply speed of the regulated airflow.

[0092] For the second circulation system 3, the return water branch 303 is equipped with a flow meter 309 and a return water thermometer 308 to detect the return water flow rate and temperature, respectively. Both the flow meter 309 and the return water thermometer 308 are connected to the controller to monitor the return water flow rate and temperature. The supply water branch 302 is equipped with an electrically operated proportional three-way valve 311. Based on the flow meter 309's detection results, the valve is controlled to be partially or fully open to ensure horizontal circulation of cooling water throughout the second circulation system 3. The flow branch 305 and the third heat exchange branch 301 are connected in parallel. By controlling the electrically operated proportional three-way valve 311 to be fully open, cooling water can flow through the flow branch 305 to the return water branch 303. Furthermore, the return water branch 303 is equipped with a return water pressure sensor 310, which is connected to the controller to monitor the return water pressure.

[0093] For the first circulation system 2, a high-pressure switch 209 and an exhaust temperature sensor 210 are also installed on the first heat exchange branch 201, and an intake temperature sensor 212 and an intake pressure sensor 211 are installed between the second heat exchange branch 202 and the circulation power element 203.

[0094] The above monitoring can effectively monitor the entire operating status of the temperature control system, making it easier to understand the entire operation process. If any abnormality occurs, it can be detected in time, ensuring the reliability of the control.

[0095] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0096] The temperature control system provided by this invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A temperature control system, characterized by, The application relates to a circulating heat exchange device for a cold source system (1) with circulating power, comprising: an outlet end A and a return end B for respectively connecting two ports of the cold source system (1), a first heat exchange device (5) being arranged between the outlet end A and the return end B; at least two circulating branches, the inlets of which are connected to the outlet end A and the outlets of which are connected to the return end B; at least two circulating systems, the circulating systems being provided with second heat exchange devices and being connected to and performing heat exchange with the corresponding circulating branches; the circulating branches are two, namely a first circulating branch (101) and a second circulating branch (102); the circulating systems are two, namely a first circulating system (2) and a second circulating system (3); the first circulating system (2) comprises a first heat exchange branch (201) for performing heat exchange with the first circulating branch (101), a second heat exchange branch (202) for performing heat exchange with the second circulating branch (102) and being connected to the first heat exchange branch (201), the second circulating branch (102) and the second heat exchange branch (202) forming an evaporator (6), and the second heat exchange device corresponding to the first circulating system (2) is the evaporator (6); the second circulating system (3) comprises a third heat exchange branch (301) connected to the second circulating branch (102), and the second heat exchange device corresponding to the second circulating system (3) is a heat exchanger (7) comprising the third heat exchange branch (301). The second circulating system (3) is located at the end of a circulating heat exchange path. The first circulating branch (101) is used for performing heat exchange with a hot end of the first circulating system (2), and the second circulating branch (102) is connected to the second circulating system (3) and used for performing heat exchange with a cold end of the first circulating system (2). The first circulating branch (101) comprises a first end connected to the outlet end A, a second end connected to the return end B and a heat exchange part connected between the first end and the second end, and the heat exchange part is used for performing heat exchange with the first heat exchange branch (201); the first heat exchange branch (201) has a cavity for flowing cooling medium, and the flowing direction of water in the heat exchange part is opposite to the flowing direction of the cooling medium in the first heat exchange branch (201). The second circulating system (3) comprises a water supply branch (302) and a water return branch (303) connected to the water supply branch (302); the outlet end A is connected to the water supply branch (302) through the second circulating branch (102); the water supply branch (302) is connected to the water return branch (303) through the third heat exchange branch (301), and the water return branch (303) is connected to the return end B. The second circulating system (3) comprises a water supply branch (302) and a water return branch (303) connected to the water supply branch (302); the outlet end A is connected to the second circulating branch (102) through a pre-heat exchange branch (103), and the second circulating branch (102) is connected to a water supply branch (302); ​ 2. The temperature control system of claim 1, wherein, ​ ​ 3. The temperature control system of claim 2, wherein, ​ ​ 4. The temperature control system of claim 3, wherein, ​ ​ ​ 5. The temperature control system of claim 3, wherein, ​ ​ The return water branch (303) is communicated with the return end B through a regenerative branch (304), and the pre-heat exchange branch (103) and the regenerative branch (304) form a regenerator (8).

6. The temperature control system of claim 4 or 5, wherein, The circulating air path further comprises a return air branch (402) and a supply air branch (403), the return air branch (402) is communicated with the supply air branch (403) through a heat exchange air path (401), and the heat exchange air path (401) and the third heat exchange branch (301) form the heat exchanger (7). A fan (407) is arranged on the return air branch (402), and the fan (407) is used to send return air in the return air branch (402) into the heat exchanger (7).

7. The temperature control system of claim 6, wherein, The first circulating system (2) comprises a circulating power element (203) arranged between the first heat exchange branch (201) and the second heat exchange branch (202), and the circulating power element (203) is used to realize the circulating flow of the cooling medium between the first heat exchange branch (201) and the second heat exchange branch (202).

8. The temperature control system of claim 7, wherein, The first heat exchange device (5) is a condenser formed by the first heat exchange branch (201) and the first circulating branch (101).

9. The temperature control system of claim 6, wherein, The first circulating system (2) comprises a semiconductor refrigerator, a hot end of the semiconductor refrigerator and the first circulating branch (101) form the first heat exchange device (5), and a cold end of the semiconductor refrigerator and the second circulating branch (102) form the evaporator (6).

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