Temperature control cabinet

Abstract

The invention discloses a temperature control cabinet which comprises a cooling liquid branch and a heater arranged on the cooling liquid branch. The first air bath system comprises an inlet A and an outlet B which are used for being connected with a temperature control environment air return end, and a first heating element is arranged on a first heat exchange branch between the inlet A and the outlet B; the second air bath system comprises an inlet C communicating with the outlet B, a second heat exchange branch conducting cold and heat exchange with the cooling liquid system, an outlet D connected with the second heat exchange branch and used for being connected with the temperature control environment air supply end, and a second heating element arranged on the second heat exchange branch. The detection system is at least used for detecting the temperature of fluid or gas of the cooling liquid branch, the first heat exchange branch and the second heat exchange branch; the control system is used for determining a temperature control deviation value according to detection information of the detection system and controlling at least one of the heater, the first heating element and the second heating element to work, the temperature control precision is improved, and the airflow cooling effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling equipment, and more specifically, to a temperature control cabinet. Background Art

[0002] For smart devices, the heat generated during operation will directly affect their service life and performance, so timely and effective heat dissipation is required to ensure the reliable operation of the equipment. For high-precision smart devices, in addition to meeting basic heat dissipation requirements, high-precision temperature control is also required to ensure the stability of temperature control.

[0003] In the related art, relatively independent water circuit systems and gas circuit systems are used for heat exchange to provide high-precision fluid. Specifically, the water circuit system can provide circulating cooling water to circulate heat for the intake air of the gas circuit system, and the heat-exchanged gas is sent to the required temperature-controlled environment.

[0004] In the process of implementing the present invention, the inventors found that the prior art has at least the following problems:

[0005] The gas output after temperature control has a certain deviation from the actual required temperature, and the temperature control accuracy is low. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a temperature control cabinet to solve the problem of inaccurate gas temperature control.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A temperature control cabinet, comprising:

[0009] A coolant system, comprising a coolant branch and a heater arranged on the coolant branch;

[0010] The first air bath system comprises an inlet A and an outlet B for connecting to a return air end of a temperature-controlled environment, wherein a first heat exchange branch between the inlet A and the outlet B is provided with a first heating element;

[0011] A second air bath system, comprising an inlet C connected to the outlet B, a second heat exchange branch for heat exchange with the coolant system, an outlet D connected to the second heat exchange branch and used to connect to the air supply end of the temperature control environment, and a second heating element provided on the second heat exchange branch;

[0012] A detection system, at least used to detect the temperature of the fluid or gas in the coolant branch, the first heat exchange branch, and the second heat exchange branch;

[0013] A control system, signal-connected to the detection system, is used to determine a temperature control deviation value according to detection information of the detection system, and to control the operation of at least one of the heater, the first heating element, and the second heating element.

[0014] Preferably, the coolant system includes a first circulation system and a second circulation system, the coolant branch is arranged in the second circulation system and is used for heat exchange with the first circulation system, and the coolant branch is a circulation loop.

[0015] Preferably, the coolant branch is provided with a power element for realizing coolant circulation;

[0016] The inlet end of the power element is connected to the part of the coolant branch that exchanges heat with the first circulation system, and the outlet end of the power element is connected to a heat exchanger, and the heat exchanger is used to exchange heat with the second gas bath system.

[0017] Preferably, the heater is a first water heater, a second water heater, and a first electric heater which are sequentially arranged along the coolant flow direction in the coolant branch, and the first electric heater is arranged between the heat exchanger and the second water heater.

[0018] Preferably, a first temperature detection element is provided between the first electric heater and the heat exchanger, and the control system is used to control the operation of the first electric heater according to the detection information of the first temperature detection element;

[0019] A second temperature detection element is provided between the second water heater and the first electric heater, and the control system is used to control the operation of the first water heater and the second water heater according to detection information of the second temperature detection element.

[0020] Preferably, a refrigeration coil is provided on the first heat exchange branch for cooling the airflow at the inlet A of the first air bath system;

[0021] The first air bath system includes a main fan, which is used to deliver the cooled air flow to the outlet B of the first air bath system.

[0022] Preferably, the first heating element includes a third water heater connected to the inlet end of the refrigeration coil, the detection system on the first heat exchange branch is a third temperature detection element arranged between the third water heater and the refrigeration coil, and the control system is used to control the operation of the third water heater based on the detection information of the third temperature detection element.

[0023] Preferably, the first heating element comprises an electric heater, and the electric heater is provided at the inlet A and the outlet B of the first gas bath system. The control system is used to control the operation of the electric heater according to the temperature control deviation value at the outlet B.

[0024] Preferably, the detection system of the second air bath system is a fourth temperature detection element and a fifth temperature detection element respectively arranged at the inlet C and the outlet D, the fourth temperature detection element is used to detect the air flow temperature of the outlet B of the first air bath system, and the fifth temperature detection element is used to detect the air flow temperature after the heat exchange with the coolant system.

[0025] Preferably, the fourth temperature detection element and the fifth temperature detection element are both connected to the control system by signals, and the control system is used to determine the temperature control deviation value based on the detection information of the fourth temperature detection element and the fifth temperature detection element, and control the operation of the first heating element and the second heating element accordingly.

[0026] The temperature control cabinet provided by the present invention includes a cooling liquid system, a first air bath system, and a second air bath system. The cooling liquid system includes a cooling liquid branch, and a heater is arranged on the cooling liquid branch. The first air bath system includes an inlet A and an outlet B, and the second air bath system includes an inlet C and an outlet D. The inlet A is connected to the return air end of the temperature control environment. The airflow is sent to the outlet B after heat exchange in the first air bath system, and is further sent to the inlet C. After the airflow through the inlet C exchanges heat with the cooling liquid system, the airflow is sent to the outlet D, and the regulated airflow is sent to the air supply end of the temperature control environment to complete the temperature regulation.

[0027] A first heating element is provided on the first heat exchange branch between the inlet A and the outlet B; a second heating element is provided on the second heat exchange branch between the inlet C and the outlet D, and the first heating element, the second heating element and the heater are all components for improving the temperature control accuracy; specifically, a detection system is provided on the coolant branch, the first heat exchange branch and the second heat exchange branch, and the detection system is at least used to detect the temperature of the fluid or the gas; the control system determines the temperature control deviation value according to the information detected by the detection system, such as determining the temperature control deviation value of the coolant system according to the detection system on the coolant branch, so as to control the operation of the heater to improve the accuracy of the coolant; such as determining the temperature control deviation value of the first gas bath system according to the detection information of the first heating element on the first heat exchange branch, so as to control the operation of the first heating element to improve the gas temperature control accuracy of the first gas bath system; further, the coolant reaching a certain accuracy in the coolant system and the fluid reaching a certain accuracy in the first gas bath system are sent to the second gas bath system, and the gas temperature control deviation value of the second gas bath system is further determined by the detection information of the detection system on the second heat exchange branch, and the control system controls the operation of the second heating element to further improve the accuracy of the gas temperature control.

[0028] The beneficial effect of the present invention is that after the temperature precision is controlled by the cooling liquid system and the first gas bath system respectively, the gas and fluid that have been regulated to a certain precision are merged into the second gas bath system, and then the regulation precision is further controlled by the second gas bath system, and a higher precision gas is output, thereby improving the control precision and ensuring the temperature control effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0030] Figure 1 This is a schematic diagram of the structure of the temperature control cabinet provided by the present invention.

[0031] Figure 1 , the reference numerals include:

[0032] 1-Cooling liquid system; 2-First gas bath system; 3-Second gas bath system; 4-Control system;

[0033] 101-first circulation system; 102-second circulation system; 11-coolant branch; 12-power element; 13-first water heater; 14-second water heater; 15-first electric heater; 16-heat exchanger; 17-first temperature detection element; 18-second temperature detection element; 19-first bypass branch; 20-first proportional valve; 21-third water heater; 22-first heat exchange branch; 23-main fan; 24-second proportional valve; 25-second bypass branch; 26-electric heater; 27-third temperature detection element; 28-refrigeration coil; 31-second heating element; 32-second heat exchange branch; 33-fourth temperature detection element; 34-fifth temperature detection element. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The core of the present invention is to provide a temperature control cabinet. After the temperature precision is controlled by the coolant system and the first gas bath system respectively, the gas and fluid reaching a certain precision are merged into the second gas bath system, and then the regulation precision is further controlled by the second gas bath system. It can provide higher precision gas, improve control precision, and ensure the temperature control effect.

[0036] The temperature control cabinet provided by the present invention includes a cooling liquid system 1, a first gas bath system 2, and a second gas bath system 3. Please refer to Figure 1 .

[0037] The coolant system 1 comprises a coolant branch 11 and a heater arranged on the coolant branch 11, wherein the coolant is arranged in the coolant branch 11, and the coolant can be cooling water or other cooling medium. The coolant can be supplied by a water tank pump or a process cooling water system.

[0038] The heater is arranged on the cooling liquid branch 11. Specifically, when temperature control is performed, the cooling liquid in the cooling liquid branch 11 circulates and maintains a certain amount of cooling, so as to exchange heat and cold with the second air bath system 3, so as to reduce the temperature of the return air end of the temperature control environment and achieve the temperature control effect. In this temperature control process, there will be a certain deviation between the preset temperature value that the cooling liquid can reach and the actual temperature value that the cooling liquid can reach, but the actual cooling liquid temperature is within a certain reasonable range. At this time, the difference between the actual cooling liquid temperature and the preset cooling liquid temperature is the temperature control deviation value.

[0039] A detection system is provided on the coolant branch 11 for detecting the temperature of the fluid, i.e., the coolant. The control system 4 determines the temperature control deviation value of the coolant system 1 according to the detection information value of the detection system, and controls the operation of the heater to further regulate the accuracy of the temperature control, reduce the temperature control deviation value, and ensure the temperature control accuracy of the coolant system 1.

[0040] The first air bath system 2 includes an inlet A and an outlet B connected to the return air end of the temperature control environment. The temperature control environment here can be a device surface, between devices, or a temperature control space, etc., and is not specifically limited. The airflow sent to the return air end of the temperature control environment into the inlet A is the gas with a higher temperature that needs to be regulated. Under the heat exchange effect of the first heat exchange branch 22 of the first air bath system 2, the gas temperature is reduced and sent to the outlet B. The gas at the outlet B is further sent to the second air bath system 3 for further regulation.

[0041] During the temperature control process of the first gas bath system 2, there will be a certain deviation between the preset regulated airflow temperature value and the actual airflow temperature value, but the actual airflow temperature is within a certain reasonable range. At this time, the difference between the actual airflow temperature and the preset airflow temperature is the temperature control deviation value.

[0042] The first heat exchange branch 22 is provided with a first heating element and a detection system. The control system 4 determines the temperature control deviation value of the first gas bath system 2 by analyzing the detection values ​​of the detection system to control the operation of the first heating element, so as to further regulate the accuracy of the air flow temperature control, reduce the temperature control deviation value, and ensure the temperature control accuracy of the first gas bath system 2.

[0043] The second gas bath system 3 includes an inlet C connected to the outlet B of the first gas bath system 2. The airflow regulated by the first gas bath system 2 is sent to the inlet C, and performs heat exchange with the coolant system 1 in the second gas bath system 3. The gas after the heat exchange is sent to the air inlet end of the temperature-controlled environment through the outlet D, that is, the gas regulated by the coolant system 1, the first gas bath system 2, and the second gas bath system 3 is sent to the temperature-controlled environment to meet the temperature control requirements of the temperature-controlled environment.

[0044] A second heat exchange branch 32 for performing heat exchange with the coolant system 1 is arranged between the inlet C and the outlet D of the second air bath system 3. The outlet D connects the second heat exchange branch 32 and the air supply end of the temperature-controlled environment. After the second heat exchange branch 32 performs heat exchange with the coolant system 1, the air flow is sent to the air supply end of the temperature-controlled environment through the outlet D to achieve the effect of temperature regulation of the temperature-controlled environment.

[0045] The second heat exchange branch 32 is provided with a second heating element 31, which is used to heat the gas to stabilize the gas and improve the accuracy of gas temperature control. Specifically, there will be a certain difference between the actual temperature value of the gas after the heat exchange in the second gas bath system 3 and the preset temperature value, but the actual temperature value is within a reasonable range. At this time, the difference between the actual temperature value and the preset temperature value is the temperature control deviation value.

[0046] A detection system is provided on the second heat exchange branch 32 to detect the temperature of the gas on the branch. The control system 4 determines the temperature control deviation value of the second gas bath system 3 based on the detection information of the detection system to control the operation of the second heating element 31, so as to further regulate the accuracy of the air flow temperature control, reduce the temperature control deviation value, and ensure the accuracy of the temperature control of the second gas bath system 3.

[0047] It should be noted that, since the fluid and gas provided by the coolant system 1 and the first gas bath system 2 have a certain degree of accuracy, it is the result of the control system 4 having performed precision regulation based on the actual temperature control deviation value, and thus this has improved the temperature control accuracy of the temperature control cabinet to a certain extent; further, the fluid and gas with a certain degree of accuracy provided by the coolant system 1 and the first gas bath system 2 are further merged in the second gas bath system 3, and the second gas bath system 3 will further regulate the temperature control accuracy, and therefore, a temperature control effect with higher accuracy can be obtained.

[0048] The detection system in the above process is at least used to detect the temperature of the fluid or gas, and can also be used to detect the flow rate, pressure, etc. of the fluid or gas. Through the information fed back by the pressure detection data, flow detection data, and temperature detection data, the control system 4 controls the operation of the first heating element, the heater, and the second heating element 31 to adjust the temperature control accuracy.

[0049] In this embodiment, the first gas bath system 2 and the second gas bath system 3 perform heat exchange between gas and liquid, and the liquid is specifically a coolant. The coldness of the coolant is exchanged with the gas to reduce the temperature of the temperature control environment.

[0050] In this embodiment, the control system 4 is used to determine the temperature control deviation value according to the detection information of the detection system, and control the operation of at least one of the heater, the first heating element, and the second heating element 31. That is, there may be components in the heater, the first heating element, and the second heating element 31 that do not need to operate. The corresponding situation of not needing to operate is that there is no temperature control deviation value or the temperature control deviation value is extremely small and cannot be further refined. This situation is specifically determined by the control system 4 based on the detection information of the detection system.

[0051] In this embodiment, the first gas bath system 2, the second gas bath system 3, and the coolant system 1 may correspond to the same control system 4, or each of the three may correspond to a separate sub-control system, without limiting the specific configuration form.

[0052] Based on the above embodiments, please refer to Figure 1 The coolant system 1 includes a first circulation system 101 and a second circulation system 102. The coolant branch 11 is arranged in the second circulation system 102 and is used for heat exchange with the first circulation system 101. The coolant branch 11 is a circulation loop.

[0053] Taking a specific implementation as an example, the first circulation system 101 contains cooling water, which circulates in the first circulation system 101. The circulating cooling water has cold capacity and can exchange heat with the coolant branch 11. The cold capacity of the circulating cooling water can be maintained by means of a process cooling water system or a water pump tank to ensure that the cooling water in the first circulation system 101 always has cold capacity.

[0054] The cooling liquid branch 11 also contains cooling water. The cooling liquid branch 11 is arranged in the second circulation system 102. The cooling liquid branch 11 can exchange heat with the cooling water in the first circulation system 101, so that the cooling liquid branch 11 has cooling capacity to further exchange heat with the second air bath system 3, thereby ensuring the effect of airflow cooling.

[0055] The coolant branch 11 is a circulation loop. After the coolant branch 11 exchanges heat with the first circulation system 101, the coolant at the outlet of the coolant branch 11 flows out and exchanges heat with the second gas bath system 3; the coolant after heat exchange enters the first circulation system 101 again through the inlet of the coolant branch 11, and exchanges heat again, and this reciprocating cycle ensures the temperature control effect of the coolant system 1.

[0056] Please refer to Figure 1 The first circulation system 101 is also provided with a first proportional valve 20, the opening of which is determined by the flow rate of the coolant in the first circulation system 101, so as to ensure the sufficiency of the coolant in the first circulation system 101 and the cooling effect on the second circulation system 102. The first circulation system 101 also includes a first bypass branch 19, in which coolant is stored, so as to ensure the circulation operation of the first circulation system 101, avoid the circulation operation of the coolant being affected by the lower temperature, and ensure the operation reliability of the first circulation system 101.

[0057] Based on any of the above embodiments, please refer to Figure 1 The coolant branch 11 is provided with a power element 12 for realizing the circulation of the coolant. The power element 12 is specifically a water pump, which can realize the circulation flow of the coolant in the coolant branch 11. The signal of the power element 12 is connected to the control system to realize the automatic control of the circulation flow of the coolant.

[0058] The inlet end of the power element 12 is connected to the part of the coolant branch 11 that exchanges heat with the first circulation system, and the outlet end of the power element 12 is connected to the heat exchanger 16, which is used to exchange heat with the second air bath system 3. The heat exchanger 16 is a component used to exchange heat with the airflow on the second heat exchange branch 32. The cooling capacity of the coolant in the heat exchanger 16 exchanges heat with the airflow, and the airflow with reduced temperature is sent to the temperature control environment through the outlet D.

[0059] Based on any of the above embodiments, please refer to Figure 1 The cooling capacity of the coolant in the heat exchanger 16 exchanges heat with the airflow, and the airflow temperature will decrease. If the airflow temperature reached at this time has a certain deviation from the preset temperature value to form a temperature control deviation, the control system 4 controls the heater operation.

[0060] The specific heaters are a first water heater 13 , a second water heater 14 , and a first electric heater 15 which are sequentially arranged along the flow direction of the coolant in the coolant branch 11 . The first electric heater 15 is arranged between the heat exchanger 16 and the second water heater 14 .

[0061] If the control system 4 determines, based on the detection information of the detection system located on the coolant branch 11, that there is a difference between the preset coolant temperature value and the actual coolant temperature value to form a temperature control deviation value, the control system 4 controls the first water heater 13, the second water heater 14, and the first electric heater 15 to operate to perform temperature precision control to narrow the gap between the preset coolant temperature value and the actual coolant temperature value, thereby improving the temperature control precision.

[0062] The first water heater 13 and the second water heater 14 are located on both sides of the power element 12. The first water heater 13 is specifically used to heat the cooling water after the heat exchange between the coolant branch 11 and the first circulation system 101 to T1 for the first time, and then send it to the position of the second water heater 14 through the power element 12 after heating. The second water heater 14 can heat it to T2 again, T1<T2, and heat it in batches to ensure the heating effect, ensure the reliable use of the power element 12, ensure the accuracy of temperature control, ensure the reliable reduction of the gap between the preset coolant temperature value and the actual coolant temperature value, and improve the temperature control accuracy.

[0063] Furthermore, the cooling water heated by the second water heater 14 is further heated to T3 by the first electric heater 15, T2<T3, so as to further improve the accuracy of temperature control and further reduce the temperature control deviation value.

[0064] In this embodiment, it should be noted that the first water heater 13, the second water heater 14, and the first electric heater 15 do not all have to be in operating state. It is sufficient to determine how to control the operating state of the first water heater 13, the second water heater 14, and the first electric heater 15 in combination with the detection information of the actual detection system.

[0065] Based on any of the above embodiments, please refer to Figure 1 In one implementation, a first temperature detection element 17 is provided between the first electric heater 15 and the heat exchanger 16 , and the control system 4 is used to control the operation of the first electric heater 15 according to the detection information of the first temperature detection element 17 .

[0066] In another embodiment, a second temperature detection element 18 is provided between the second water heater 14 and the first electric heater 15 , and the control system 4 is used to control the operation of the first water heater 13 and the second water heater 14 according to the detection information of the second temperature detection element 18 .

[0067] Under the above two specific implementation methods, the accuracy of the coolant temperature control in the coolant system 1 is guaranteed, so that the temperature of the gas after heat exchange in the second gas bath system 3 can be controlled with better accuracy, and the consistency between the pre-trial temperature value required by the temperature control environment and the actual output air flow temperature at the outlet D of the second gas bath system 3 is guaranteed, the temperature control deviation value is reduced as much as possible, and the control accuracy is improved.

[0068] Based on any of the above embodiments, please refer to Figure 1 A refrigeration coil 28 is provided on the first heat exchange branch 22, which is used to cool the airflow at the inlet A of the first air bath system 2; the outlet end and the inlet end of the refrigeration coil 28 are connected to the outlet end and the inlet end of the cooling liquid supply system, so that the cooling liquid circulates in the refrigeration coil 28. The cooling liquid supply system here can specifically be a water tank water pump or a process cooling water system.

[0069] The refrigeration coil 28 can be set to an S-shape, a serpentine shape, a Z-shape, etc., to increase the contact area between the airflow supplied by the inlet A at the return air end of the temperature-controlled environment and the refrigeration coil 28, to ensure the heat exchange effect, and to ensure the reliable cooling effect of the second air bath system 3 on the airflow.

[0070] The first air bath system 2 includes a main fan 23, which is used to deliver the cooled airflow to the outlet B of the first air bath system 2. The first air bath system 2 can be set as a relatively closed space, and the airflow after heat exchange through the refrigeration coil 28 can enter the inlet of the main fan 23, and the operation of the main fan 23 drives the airflow to be delivered to the outlet B, completing the airflow cooling process in the first air bath system 2.

[0071] Please refer to Figure 1The first gas bath system 2 is also provided with a second proportional valve 24, the opening of which is determined by the flow rate of the coolant in the first heat exchange branch 22, to ensure that the coolant in the first gas bath system 2 is sufficient and the cooling effect on the airflow is ensured. The first gas bath system 2 also includes a second bypass branch 25, in which coolant is stored, to ensure the circulation of the first heat exchange branch 22, to avoid the circulation of the coolant being affected by the lower temperature, and to ensure the operational reliability of the first gas bath system 2.

[0072] Based on any of the above embodiments, please refer to Figure 1 The first heating element includes a third water heater 21 connected to the inlet end of the refrigeration coil 28. The detection system on the first heat exchange branch 22 is a third temperature detection element 27 arranged between the third water heater 21 and the refrigeration coil 28. The control system 4 is used to control the operation of the third water heater 21 according to the detection information of the third temperature detection element 27.

[0073] The coolant in the refrigeration coil 28 needs to maintain a certain amount of cold to ensure the effect of heat exchange with the airflow. The coolant temperature information in the refrigeration coil 28 is detected by the third temperature detection element 27. If the control system 4 determines that there is a difference between the actual coolant temperature and the preset coolant temperature based on the detection information, the control system 4 controls the third water heater 21 to operate to reduce the difference between the actual coolant temperature and the preset coolant temperature, thereby improving the accuracy of temperature control.

[0074] Based on any of the above embodiments, the first heating element includes an electric heater 26, and electric heaters 26 are provided at the inlet A and outlet B of the first gas bath system 2. The control system 4 is used to control the operation of the electric heater 26 according to the temperature control deviation value at the outlet B.

[0075] Please refer to Figure 1 The first heating element also includes an electric heater 26, which is used to heat the airflow. Specifically, based on the difference between the actual temperature value at the outlet B of the first air bath system 2 and the preset temperature value, the electric heater 26 is controlled to operate, and the airflow temperature output to the outlet B is fine-tuned to improve the accuracy of airflow temperature control.

[0076] Based on any of the above embodiments, please refer to Figure 1 The detection system of the second gas bath system 3 is a fourth temperature detection element 33 and a fifth temperature detection element 34 which are respectively arranged at the inlet C and the outlet D. The fourth temperature detection element 33 is used to detect the air flow temperature at the outlet B of the first gas bath system 2, and the fifth temperature detection element 34 is used to detect the air flow temperature after the heat exchange with the coolant system 1.

[0077] The outlet B of the first gas bath system 2 delivers the airflow to the inlet C of the second gas bath system 3, and the airflow further exchanges heat through the coolant branch 11 and is delivered to the outlet D to complete the regulation. The control system 4 determines the temperature regulation effect of the second gas bath system 3 based on the detection information of the fourth temperature detection element 33 and the fifth temperature detection element 34.

[0078] If after temperature control, there is a difference between the temperature at the outlet D and the temperature value of the preset temperature control environment, but this difference is within a reasonable range, the temperature control deviation value is determined by the detection information of the fifth temperature detection element 34, and the operation of the second heating element 31 is controlled.

[0079] Based on any of the above embodiments, please refer to Figure 1 The fourth temperature detection element 33 and the fifth temperature detection element 34 are both connected to the control system 4 by signals.

[0080] In a specific embodiment, the control system 4 is used to determine the temperature control deviation value of the first gas bath system 2 based on the detection information of the fourth temperature detection element 33, and control the operation of the first heating element, where the first heating element is specifically the third water heater 21 and the electric heater 26.

[0081] In another specific embodiment, the control system 4 is used to determine the temperature control deviation value of the second gas bath system 3 according to the detection information of the fifth temperature detection element 34, and control the operation of the second heating element 31 to improve the accuracy of temperature control.

[0082] In general, the first gas bath system 2 and the coolant system 1 can both adjust the temperature control accuracy to a relatively high degree. The gas and liquid after the confluence of the first gas bath system 2 and the coolant system 1 further improve the temperature control accuracy in the second gas bath system 3. Therefore, the entire temperature control cabinet can achieve better temperature control accuracy, so that the final air flow temperature can better meet the requirements, so as to be suitable for temperature control of the environment of high-precision instruments or places.

[0083] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0084] The above is a detailed introduction to a temperature control cabinet provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A temperature control cabinet, characterized in that: include: A coolant system (1) comprising a coolant branch (11) and a heater arranged on the coolant branch (11); A first air bath system (2) comprises an inlet A and an outlet B for connecting to a return air end of a temperature-controlled environment, wherein a first heat exchange branch (22) between the inlet A and the outlet B is provided with a first heating element; A second air bath system (3), comprising an inlet C connected to the outlet B, a second heat exchange branch (32) for heat exchange with the coolant system (1), an outlet D connected to the second heat exchange branch (32) and used for connecting to an air supply end of a temperature-controlled environment, and a second heating element (31) provided on the second heat exchange branch (32); a detection system, at least used to detect the temperature of the fluid or gas in the coolant branch (11), the first heat exchange branch (22), and the second heat exchange branch (32); A control system (4) is connected to the detection system by signal, and is used to determine a temperature control deviation value according to detection information of the detection system, and to control the operation of at least one of the heater, the first heating element, and the second heating element (31).

2. The temperature control cabinet according to claim 1, characterized in that: The coolant system (1) comprises a first circulation system (101) and a second circulation system (102); the coolant branch (11) is arranged in the second circulation system (102) and is used for exchanging heat with the first circulation system (101); the coolant branch (11) is a circulation loop.

3. The temperature control cabinet according to claim 2, characterized in that: The coolant branch (11) is provided with a power element (12) for realizing coolant circulation; The inlet end of the power element (12) is connected to the portion of the coolant branch (11) that exchanges heat with the first circulation system, and the outlet end of the power element (12) is connected to a heat exchanger (16), and the heat exchanger (16) is used to exchange heat with the second gas bath system (3).

4. The temperature control cabinet according to claim 3, characterized in that: The heaters are a first water heater (13), a second water heater (14), and a first electric heater (15) which are arranged in sequence along the flow direction of the coolant in the coolant branch (11); the first electric heater (15) is arranged between the heat exchanger (16) and the second water heater (14).

5. The temperature control cabinet according to claim 4, characterized in that: A first temperature detection element (17) is provided between the first electric heater (15) and the heat exchanger (16), and the control system (4) is used to control the operation of the first electric heater (15) according to detection information of the first temperature detection element (17); A second temperature detection element (18) is provided between the second water heater (14) and the first electric heater (15), and the control system (4) is used to control the operation of the first water heater (13) and the second water heater (14) based on detection information of the second temperature detection element (18).

6. The temperature control cabinet according to any one of claims 1 to 5, characterized in that: The first heat exchange branch (22) is provided with a refrigeration coil (28) for cooling the airflow at the inlet A of the first air bath system (2); The first air bath system (2) comprises a main fan (23), and the main fan (23) is used to deliver the cooled air flow to the outlet B of the first air bath system (2).

7. The temperature control cabinet according to claim 6, characterized in that: The first heating element comprises a third water heater (21) connected to the inlet end of the refrigeration coil (28); the detection system on the first heat exchange branch (22) is a third temperature detection element (27) arranged between the third water heater (21) and the refrigeration coil (28); and the control system (4) is used to control the operation of the third water heater (21) based on the detection information of the third temperature detection element (27).

8. The temperature control cabinet according to claim 7, characterized in that: The first heating element comprises an electric heater (26), and the electric heater (26) is provided at the inlet A and the outlet B of the first gas bath system (2). The control system (4) is used to control the operation of the electric heater (26) according to a temperature control deviation value at the outlet B.

9. The temperature control cabinet according to claim 8, characterized in that: The detection system of the second air bath system (3) comprises a fourth temperature detection element (33) and a fifth temperature detection element (34) which are respectively arranged at the inlet C and the outlet D. The fourth temperature detection element (33) is used to detect the air flow temperature at the outlet B of the first air bath system (2), and the fifth temperature detection element (34) is used to detect the air flow temperature after the heat exchange with the coolant system (1).

10. The temperature control cabinet according to claim 9, characterized in that: The fourth temperature detection element (33) and the fifth temperature detection element (34) are both connected to the control system (4) by signals. The control system (4) is used to determine the temperature control deviation value based on the detection information of the fourth temperature detection element (33) and the fifth temperature detection element (34), and to control the operation of the first heating element and the second heating element (31) accordingly.

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