A high-precision constant temperature control system

Abstract

This application relates to a high-precision constant temperature control system, which relates to the field of temperature control systems. It includes a building component, a cooling component, a gas flow driving component, and N temperature increase adjustment components. A gas return channel communicating with the air outlet and the air return opening of the laboratory is formed inside the building component. The cooling component, the gas flow driving component, and multiple temperature increase adjustment components are all connected in series on the gas return channel. The gas flow driving component can drive the gas to flow in the gas return channel. The cooling component can cool the gas to Ta, and N temperature increase adjustment components can adjust the gas temperature from Ta to T, where T1 < T. This application has the effect that it first reduces to the low temperature Ta and then increases to the specified temperature T, which can more precisely control the temperature change, reduce overshoot and fluctuations, and thus achieve higher temperature control accuracy.

Description

Technical Field

[0001] This application relates to the field of temperature control systems, and more particularly to a high-precision constant temperature control system. Background Art

[0002] A constant temperature laboratory, also often referred to as an environmental control laboratory, is mainly used to maintain a stable temperature and humidity environment to meet the needs of various experiments and tests. The development of the laboratory constant temperature equipment industry is driven by the growing demand for thermostats in scientific research, education, and industrial upgrading.

[0003] In the temperature control system of existing constant temperature laboratories, the temperature adjustment module directly acts on the return air system, adjusts the temperature of the return air to the specified temperature T, and then re-introduces it into the laboratory to achieve constant temperature in the laboratory. However, directly adjusting the return air to the specified temperature T requires the temperature adjustment module to have too fast a temperature adjustment rate, resulting in phenomena such as temperature overshoot or fluctuation, and further leading to poor accuracy of temperature control in the laboratory. Summary of the Invention

[0004] To improve the problem that directly adjusting the return air to the specified temperature leads to phenomena such as temperature overshoot or fluctuation, and further leads to poor accuracy of temperature control in the laboratory, this application provides a high-precision constant temperature control system.

[0005] A high-precision constant temperature control system provided by this application adopts the following technical solutions:

[0006] A high-precision constant temperature control system includes a building component, a cooling component, a gas flow driving component, and N temperature increase adjustment components. A gas return channel communicating with the air outlet and the air return port of the laboratory is formed inside the building component. The cooling component, the gas flow driving component, and multiple temperature increase adjustment components are all connected in series on the gas return channel. The gas flow driving component can drive the gas to flow in the gas return channel. The cooling component can cool the gas to Ta, and N temperature increase adjustment components can adjust the gas temperature from Ta to T, where Ta < T.

[0007] By adopting the above technical solutions, when controlling the temperature in the laboratory, the gas flow driving component sucks the air in the laboratory through the air return port into the gas return channel. The gas passes through the cooling component and its temperature is reduced to Ta. The cooled gas then passes through N temperature increase adjustment components to raise the gas temperature to T, and then enters the laboratory through the air outlet, realizing the control of constant temperature in the laboratory. This application first reduces to the low temperature Ta and then raises to the specified temperature T, which can more finely control the temperature change, reduce overshoot and fluctuation, and thus achieve higher temperature control accuracy.

[0008] In a specific feasible implementation, the cooling assembly includes a cooling disk group and a cooling water circulation system. The cooling disk group is arranged in the gas return channel and is connected to the building assembly. The air in the gas return channel can flow through the cooling disk group to adjust the temperature of the gas to Ta. The cooling water circulation system is connected to the cooling disk group to provide cooling water for the cooling disk group.

[0009] By adopting the above technical solution, the heat exchange between the cooling water flowing in the cooling disk group and the gas is utilized to cool down the return gas in the gas return channel.

[0010] In a specific feasible implementation, the cooling disk group includes a plurality of heat exchange disks. The plurality of heat exchange disks are arranged at intervals in the vertical direction in the gas return channel. A gas channel for gas to flow through is formed between two adjacent heat exchange disks. A heat exchange cavity for cooling water to flow through is formed inside the heat exchange disk. An inlet and an outlet communicating with the heat exchange cavity are opened on the heat exchange disk. The inlet is connected to the cooling water circulation system through a water inlet pipe so that the cooling water can flow into the heat exchange cavity. The outlet is connected to the cooling water circulation system through a water outlet pipe so that the water after heat exchange in the heat exchange cavity flows back to the cooling water circulation system.

[0011] By adopting the above technical solution, the cooling water circulation system passes the cooling water into the heat exchange cavity in the heat exchange disk through the water inlet pipe. The air passes through the gas channel and exchanges heat with the heat exchange disk and the cooling water. The cooled cooling water flows into the cooling water circulation system through the water outlet pipe for cooling water circulation. The heat exchange disks are used to cool the gas in layers, increasing the heat exchange area between the gas and the heat exchange disks, thereby improving the efficiency of gas heat exchange.

[0012] In a specific feasible implementation, the front end of the upper heat exchange disk extends along the reverse direction of the air flow beyond the front end of the lower heat exchange disk, so that the connection lines of the two side ends of the plurality of heat exchange disks form a parallelogram.

[0013] By adopting the above technical solution, by using the parallelogram design of the ends of the heat exchange disks, the heat exchange range of the cooling disk group along the gas flow direction can be increased, thereby prolonging the gas heat exchange time. Without changing the cooling temperature, the amount of cooling water used can be reduced, achieving an energy-saving effect.

[0014] In a specific feasible implementation, a water blocking part is fixedly arranged on the top of the heat exchange disk. The water blocking part and the building assembly enclose a water collecting tank, and a water falling port is formed at the tail of the heat exchange disk. The condensed water in the water collecting tank on the upper heat exchange disk can flow down along the water falling port into the water collecting tank on the lower heat exchange disk.

[0015] By adopting the above technical solution, when the cooling water cools the gas, condensed water will condense on the heat exchange plate and then fall into the water collecting tank below, realizing the collection of the condensed water; when the condensed water falls, it will be deflected in the direction of gas flow under the influence of gas flow. The parallelogram design of the heat exchange plate can increase the collection area of the water collecting tank for the condensed water and improve the convenience of collecting the condensed water.

[0016] In a specific feasible implementation, a drainage tank is provided on the building component. The drainage tank is arranged at the tail of the lowest heat exchange plate. The middle of the drainage tank is bent to form a bent part. The drainage tank is provided with a water collecting port and a drainage port on both sides of the bent part. The drainage port is located outside the building component. The condensed water on the heat exchange plate can flow into the drainage tank through the water collecting port. A sealed water body is filled at the bent part of the drainage tank to be able to separate the interior of the drainage tank into a mutually isolated water inlet chamber and a drainage chamber. The water collecting port is communicated with the water inlet chamber, and the drainage port is communicated with the drainage chamber.

[0017] By adopting the above technical solution, the condensed water is discharged from the water falling port at the tail of the heat exchange plate and enters the drainage tank through the water collecting port, increasing the amount of the sealed water body in the drainage tank. Then, the increased amount of water is discharged through the drainage port, thereby ensuring the sealing of the gas return channel while realizing the discharge of the condensed water and facilitating the discharge of the condensed water.

[0018] In a specific feasible implementation, the gas flow driving component includes a fan. The fan is connected in series on the gas return channel to be able to drive the gas to circulate between the gas return channel and the laboratory.

[0019] By adopting the above technical solution, the operation of the fan is utilized to realize the flow of the gas in the gas return channel.

[0020] In a specific feasible implementation, N of the temperature raising and regulating components are all arranged downstream of the gas flow driving component. The temperature raising amplitude that each temperature raising and regulating component can increase the gas is ΔT, and Ta + N * ΔT = T.

[0021] By adopting the above technical solution, multiple temperature raising and regulating components uniformly raise the temperature of the gas, reducing the temperature control and adjustment process, which helps to improve the accuracy and efficiency of temperature control, and can also reduce temperature fluctuations and improve the stability of the temperature control system.

[0022] In a specific feasible implementation, the temperature raising and regulating component includes a plurality of electric heating plates. The plurality of electric heating plates are arranged in the gas return channel, and a heating channel for gas flow is formed between adjacent two electric heating plates.

[0023] By adopting the above technical solution, the gas is heated by energizing the electric heating plate to achieve the temperature rise of the gas.

[0024] In a specific feasible embodiment, the building component is provided with an air supplement port communicated with the gas return channel. The air supplement port is located upstream of the cooling component. A dust removal module is arranged in the gas return channel, and the dust removal module is located between the air supplement port and the cooling component.

[0025] By adopting the above technical solution, the gas return channel is supplemented with gas through the air supplement port to ensure sufficient gas. Then, the gas is filtered by the dust removal module to reduce the dust content in the gas and improve the cleanliness of the air in the laboratory.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When controlling the temperature in the laboratory, the gas flow driving component sucks the air in the laboratory into the gas return channel through the return air port. The gas passes through the cooling component and the temperature is reduced to Ta. The cooled gas then passes through N temperature rising and adjusting components to raise the gas temperature to T, and then enters the laboratory through the air outlet to achieve the control of the constant temperature in the laboratory. The present application first reduces to the low temperature Ta and then raises to the specified temperature T, which can more precisely control the temperature change, reduce overshoot and fluctuation, and thus achieve higher temperature control accuracy;

[0028] 2. By using the parallelogram design at the end of the heat exchange plate, the heat exchange range of the cooling plate group along the gas flow direction can be improved, thereby prolonging the gas heat exchange time. Without changing the cooling temperature, the amount of cooling water can be reduced, achieving the effect of energy saving;

[0029] 3. Multiple temperature rising and adjusting components uniformly raise the temperature of the gas, reducing the temperature control and adjustment process, which helps to improve the accuracy and efficiency of temperature control, can also reduce temperature fluctuation, and improve the stability of the temperature control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of a high-precision constant temperature control system according to an embodiment of the present application.

[0031] Figure 2 is an exploded view for showing the gas return channel.

[0032] Figure 3 is along Figure 1 the cross-sectional view taken along line A-A in

[0033] Figure 4 is Figure 3 the enlarged view of part B in

[0034] Figure 5 It is a schematic structural diagram for showing the cooling component.

[0035] Figure 6 It is along Figure 5 The cross-sectional view taken along the C-C line in

[0036] Explanation of reference numerals: 1, building component; 11, frame; 12, partition; 13, gas return channel; 14, air supply port; 15, dust removal module; 2, cooling component; 21, cooling plate group; 211, heat exchange plate; 212, gas channel; 213, heat exchange cavity; 214, water inlet; 215, water outlet; 216, water retaining part; 217, water collecting tank; 218, water falling port; 22, cooling water circulation system; 221, water inlet pipe; 222, cooling water supply pipe; 224, cooling water return pipe; 225, water outlet pipe; 23, installation frame; 3, gas flow driving component; 31, fan; 4, temperature rise adjustment component; 41, electric heating plate; 42, heating channel; 5, laboratory; 51, air outlet; 52, air return port; 6, drainage tank; 61, bending part; 62, water collecting port; 63, drainage port; 64, sealed water body; 65, water inlet chamber; 66, drainage chamber. Detailed implementation manners

[0037] The following further elaborates on this application Figures 1-6 in conjunction with the attached drawings.

[0038] The embodiment of this application discloses a high-precision constant temperature control system.

[0039] Referring to Figure 1 and Figure 2 , a high-precision constant temperature control system includes a building component 1, a cooling component 2, a gas flow driving component 3, and N temperature rise adjustment components 4. In this embodiment, there are two sets of constant temperature control systems, and the two sets of constant temperature control systems are symmetrically arranged on both sides of the laboratory 5. The building component 1 includes a frame 11 and partitions 12. The frame 11 is installed on the outer wall of the laboratory 5, and multiple partitions 12 are installed on the frame 11 to form multiple square compartments. The multiple square compartments communicate with each other to form a gas return channel 13. One end of the gas return channel 13 is connected to the air outlet 51 at the top of the laboratory 5, and the other end is connected to the air return port 52 at the bottom of the laboratory 5, so that the gas is blown into the laboratory 5 from the air outlet 51 at the top of the laboratory 5 and enters the gas return channel 13 from the air return port 52 at the bottom of the laboratory 5. The cooling component 2, the gas flow driving component 3, and the multiple temperature rise adjustment components 4 are all connected in series on the gas return channel 13. The gas flow driving component 3 drives the gas to flow in the gas return channel 13, forming a circulating flow of the gas between the gas return channel 13 and the laboratory 5. The cooling component 2 can cool the gas to Ta, and the N temperature rise adjustment components 4 can adjust the gas temperature from Ta (°C) to T (°C), and Ta < T.

[0040] When controlling the temperature in Laboratory 5, the gas flow driving assembly 3 sucks the air in Laboratory 5 into the gas return channel 13 through the air return port 52. The gas passes through the cooling assembly 2 and its temperature is reduced to Ta. The cooled gas then passes through N temperature raising and regulating assemblies 4 to raise the gas temperature to T, and then enters Laboratory 5 through the air outlet 51, realizing the control of the constant temperature in Laboratory 5. In this application, the temperature is first reduced to the low temperature Ta and then raised to the specified temperature T, which can more precisely control the temperature change, reduce overshoot and fluctuations, and thus achieve higher temperature control accuracy.

[0041] Refer to Figure 2 、 Figure 3 The partition board 12 in the building component 1 is covered with a sound insulation board, which can reduce the noise caused by gas flow and lower the noise intensity in Laboratory 5. An air supplement port 14 is opened on the partition board 12 of the building component 1. The air supplement port 14 is located upstream of the cooling assembly 2, and a plugging member cooperating with the air supplement port 14 is provided on the partition board 12 to supplement gas to the gas return channel 13 through the air supplement port 14 to ensure sufficient gas. A dust removal module 15 is provided in the gas return channel 13 of the building component 1. The dust removal module 15 in this embodiment is a cartridge dust collector. The dust removal module 15 is arranged between the cooling assembly 2 and the air supplement port 14, so that the gas in the gas return channel 13 and the gas supplemented by the air supplement port 14 are dust-removed by the dust collector, reducing the dust content in the gas and improving the cleanliness of the air in Laboratory 5.

[0042] Refer to Figure 4 、 Figure 5 and Figure 6, the cooling component 2 in this embodiment includes a cooling disk group 21 and a cooling water circulation system 22. The cooling disk group 21 in this embodiment includes a plurality of heat exchange disks 211. An installation frame 23 for placing in the gas return channel 13 is provided on the building component 1. A plurality of heat exchange disks 211 are arranged at intervals in the vertical direction in the installation frame 23. The heat exchange disks 211 are arranged in parallel. A gas channel 212 for gas to flow through is formed between adjacent two heat exchange disks 211. A heat exchange cavity 213 for cooling water to flow through is formed inside the heat exchange disk 211. An inlet 214 and an outlet 215 communicating with the heat exchange cavity 213 are opened on the heat exchange disk 211. The inlet 214 and the outlet 215 are located at both ends of the heat exchange disk 211. Each inlet 214 is connected to a cooling water supply pipe 222 in the cooling water circulation system 22 through a water inlet pipe 221, so that cooling water can flow into the heat exchange cavity 213. Each outlet 215 is connected to a cooling water return pipe 224 in the cooling water circulation system 22 through a water outlet pipe 225, so that the water after heat exchange in the heat exchange cavity 213 flows back to the cooling water circulation system 22. The cooling water after heat exchange in the cooling water circulation system 22 is cooled by a radiator and then flows back to the cooling water return pipe 224 again.

[0043] Refer to Figure 4 , Figure 5 and Figure 6 , the front end of the heat exchange disk 211 from top to bottom extends out of the front end of the lower heat exchange disk 211 along the reverse direction of the air flow, so that the connecting lines of the two side ends of a plurality of heat exchange disks 211 form a parallelogram. The extending length of the heat exchange disk 211 can be designed according to needs. By using the parallelogram design at the end of the heat exchange disk 211, the heat exchange range of the cooling disk group 21 along the gas flow direction can be increased, thereby prolonging the gas heat exchange time. Without changing the cooling temperature, the amount of cooling water can be reduced, achieving the effect of energy saving.

[0044] When the gas in the gas return channel 13 passes through the heat exchange disk 211, it is divided into multiple layers and enters the gas channel 212. The gas exchanges heat with the heat exchange disk 211 and the cooling water. The cooled cooling water flows into the cooling water circulation system 22 through the water outlet pipe 225 for cooling water circulation. By using the heat exchange disk 211 to cool the gas in layers, the heat exchange area between the gas and the heat exchange disk 211 is increased, thereby improving the gas heat exchange efficiency. The temperature of the gas after being cooled by the cooling disk group 21 is Ta. A temperature sensor is arranged at the end outlet of the cooling disk group 21 in the gas return channel 13 to detect the temperature of the gas.

[0045] Refer to Figure 4 , Figure 5, at the front end of the top wall of the heat exchange plate 211, there is a water baffle 216. The water baffle 216 and the partition 12 in the building component 1 enclose a water collecting tank 217 on the top wall of the heat exchange plate 211, and a water falling port 218 is formed at the tail of the water collecting tank 217. The condensed water in the water collecting tank 217 on the upper heat exchange plate 211 can flow down along the water falling port 218 into the water collecting tank 217 on the lower heat exchange plate 211. Below the gas return channel 13 of the building component 1, there is a drainage tank 6. The middle of the drainage tank 6 is bent to form a bent portion 61, making the drainage tank 6 in a V shape. The drainage tank 6 is provided with a water collecting port 62 and a drainage port 63 on both sides of the bent portion 61. The water collecting port 62 is inserted into the gas return channel 13 and is located below the water falling port 218 of the heat exchange plate 211 at the lowest position. The condensed water in the water collecting tank 217 flows through the water falling port 218 into the water collecting port 62. The drainage port 63 is located outside the building component 1. The drainage tank 6 is filled with a sealing water body 64 at the bent portion 61, separating the interior of the drainage tank 6 into a mutually isolated water inlet chamber 65 and a drainage chamber 66. The water collecting port 62 is communicated with the water inlet chamber 65, and the drainage port 63 is communicated with the drainage chamber 66.

[0046] When the cooling water cools the gas, condensed water will form on the heat exchange plate 211, and then the condensed water will fall into the lower water collecting tank 217 to realize the collection of the condensed water. When the condensed water falls, affected by the gas flow, it will deflect in the gas flow direction. The parallelogram design of the heat exchange plate 211 can increase the collection area of the water collecting tank 217 for the condensed water and improve the convenience of collecting the condensed water. The condensed water is discharged from the water falling port 218 at the tail of the heat exchange plate 211 and enters the drainage tank 6 through the water collecting port 62, increasing the amount of the sealing water body 64 in the drainage tank 6. Then the increased water volume is discharged through the drainage port 63, thus ensuring the sealing of the gas return channel 13 while realizing the discharge of the condensed water and facilitating the discharge of the condensed water.

[0047] Refer to Figure 3 , in this embodiment, the gas flow driving component 3 includes a fan 31. The fan 31 is connected in series on the gas return channel 13 to drive the gas to circulate between the gas return channel 13 and the laboratory 5.

[0048] Refer to Figure 3 , taking N = 3 as an example in this embodiment, that is, there are three temperature rising adjustment components 4. The three temperature rising adjustment components 4 are located between the fan 31 and the air outlet 51. Each temperature rising adjustment component 4 raises the temperature of the gas by ΔT, and Ta + N * ΔT = T. The multiple temperature rising adjustment components 4 uniformly raise the temperature of the gas, reducing the temperature control adjustment process, which helps to improve the accuracy and efficiency of temperature control, and can also reduce temperature fluctuations and improve the stability of the temperature control system.

[0049] Refer to Figure 3, each temperature increase adjustment component 4 includes a plurality of electric heating plates 41. The plurality of electric heating plates 41 are arranged in the gas return channel 13, and a heating channel 42 for gas flow is formed between two adjacent electric heating plates 41. When the gas flows through the heating channel 42, the electric heating plates 41 heat the gas, and the temperature of the gas can be conveniently controlled by means of electric heating. In order to facilitate the control of the temperature of the gas after being heated by each temperature increase adjustment component 4, a temperature sensor is provided at the end of each temperature increase adjustment component 4 to facilitate the timely monitoring of the temperature of the gas. An arc-shaped deflector is provided at the corner of the gas return channel 13 between the fan 31 and the air outlet 51 to reduce the sound of the air flow hitting the partition 12 and reduce the noise in the laboratory 5.

[0050] The implementation principle of a high-precision constant temperature control system in an embodiment of the present application is as follows: when controlling the temperature in the laboratory 5, the fan 31 sucks the air in the laboratory 5 into the gas return channel 13 through the air return port 52. The gas exchanges heat with the cooling water through the air flow channel, and the temperature is reduced to Ta. The cooled gas then passes through three temperature increase adjustment components 4 to raise the gas temperature to T, and then enters the laboratory 5 through the air outlet 51, realizing the constant temperature control of the laboratory 5. In the present application, the temperature is first reduced to the low temperature Ta and then raised to the specified temperature T, which can more precisely control the temperature change, reduce overshoot and fluctuation, and thus achieve higher temperature control accuracy.

[0051] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high-precision constant temperature control system, characterized in that: It includes a building component (1), a cooling component (2), a gas flow driving component (3), and N temperature-raising adjustment components (4). A gas return channel (13) that communicates with the air outlet (51) and the air return port (52) of the laboratory (5) is formed inside the building component (1). The cooling component (2), the gas flow driving component (3), and multiple temperature-raising adjustment components (4) are all connected in series on the gas return channel (13). The gas flow driving component (3) can drive the gas to flow in the gas return channel (13), and the cooling component (2) can cool the gas to Ta. The N temperature-raising adjustment components (4) can adjust the gas temperature from Ta to T, where Ta < T; The cooling component (2) includes a cooling disk group (21) and a cooling water circulation system (22). The cooling disk group (21) is arranged in the gas return channel (13) and is connected to the building component (1). The air in the gas return channel (13) can flow through the cooling disk group (21) to adjust the gas temperature to Ta. The cooling water circulation system (22) is connected to the cooling disk group (21) to provide cooling water for the cooling disk group (21); The cooling disk group (21) includes several heat exchange disks (211). The several heat exchange disks (211) are arranged at intervals in the vertical direction in the gas return channel (13). A gas channel (212) for gas to flow through is formed between adjacent two heat exchange disks (211). A heat exchange cavity (213) for cooling water to flow through is formed inside the heat exchange disk (211). An inlet (214) and an outlet (215) that communicate with the heat exchange cavity (213) are opened on the heat exchange disk (211). The inlet (214) is connected to the cooling water circulation system (22) through a water inlet pipe (221) so that the cooling water can flow into the heat exchange cavity (213). The outlet (215) is connected to the cooling water circulation system (22) through a water outlet pipe (225) so that the water after heat exchange in the heat exchange cavity (213) can flow back to the cooling water circulation system (22); The front end of the upper heat exchange disk (211) extends out of the front end of the lower heat exchange disk (211) along the reverse direction of the air flow, so that the connecting lines of the two side ends of the several heat exchange disks (211) form a parallelogram; A water blocking part (216) is fixedly arranged on the top of the heat exchange disk (211). The water blocking part (216) and the building component (1) enclose a water collecting tank (217), and a water falling port (218) is formed at the tail of the heat exchange disk (211). The condensed water in the water collecting tank (217) on the upper heat exchange disk (211) can flow down along the water falling port (218) into the water collecting tank (217) on the lower heat exchange disk (211).

2. The high-precision constant temperature control system according to claim 1, wherein: A drainage tank (6) is provided on the building component (1). The drainage tank (6) is arranged at the tail of the lowest heat exchange plate (211). The middle of the drainage tank (6) is bent to form a bent portion (61). The drainage tank (6) is provided with a water collection port (62) and a drainage port (63) on both sides of the bent portion (61). The drainage port (63) is located outside the building component (1). The condensate water on the heat exchange plate (211) can flow into the drainage tank (6) through the water collection port (62). A sealed water body (64) is filled at the bent portion (61) of the drainage tank (6) so as to be able to divide the interior of the drainage tank (6) into a mutually isolated water inlet chamber (65) and a drainage chamber (66). The water collection port (62) is communicated with the water inlet chamber (65), and the drainage port (63) is communicated with the drainage chamber (66).

3. The high-precision constant temperature control system according to claim 1, wherein: The gas flow driving component (3) includes a fan (31). The fan (31) is connected in series on the gas return channel (13) so as to be able to drive the gas to circulate and flow in the gas return channel (13) and the laboratory (5).

4. The high-precision constant temperature control system according to claim 1, wherein: N of the temperature increase adjustment components (4) are all arranged downstream of the gas flow driving component (3). The temperature increase amplitude that each temperature increase adjustment component (4) can increase the gas is ΔT, and Ta + N * ΔT = T.

5. The high-precision constant temperature control system according to claim 4, characterized in that: The temperature increase adjustment component (4) includes a plurality of electric heating plates (41). The plurality of electric heating plates (41) are arranged in the gas return channel (13). A heating channel (42) for gas flow is formed between adjacent two electric heating plates (41).

6. The high-precision constant temperature control system according to claim 1, characterized in that: The building component (1) is provided with a gas supplement port (14) communicated with the gas return channel (13). The gas supplement port (14) is located upstream of the cooling component (2). A dust removal module (15) is arranged in the gas return channel (13). The dust removal module (15) is located between the gas supplement port (14) and the cooling component (2).

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