thermostat

Abstract

The application discloses a thermostat, which comprises a shell, a control mechanism and a controller. A cold head is arranged in the shell, the top of the cold head defines a containing space, the cold head defines an input channel, an output channel and a discharge channel, a sample table is arranged on the top wall of the cold head, the sample table is provided with a temperature detection member and a heating member; the control mechanism is arranged in the containing space, the control mechanism comprises a partition member, a blocking member and a driving member, the partition member divides the containing space into a cooling space and a conveying space, the cooling space is located at the top of the partition member, the conveying space is located at the bottom of the partition member, the input channel and the output channel are communicated with the conveying space, the discharge channel is communicated with the cooling space and the output channel, the partition member is provided with a communication hole, the blocking member is suitable for blocking the communication hole, and the driving member is used for driving the blocking member to move close to or away from the communication hole; and the controller controls the driving member to work and controls the heating member to start or stop heating according to the detection signal of the temperature detection member. The application can reduce the energy consumption of the thermostat.

Description

Technical Field

[0001] This application relates to the field of temperature control equipment, and in particular to a thermostat. Background Technology

[0002] In related technologies, a part is placed on the sample stage inside a thermostat. The thermostat is used to maintain the temperature of the part at a preset temperature, allowing optical or electrical experiments to be performed on the part at the preset temperature. Existing thermostats use a cooling medium and a heating element to cool and heat the sample stage respectively to maintain the sample stage temperature at the preset temperature. The cooling medium continuously flows within the thermostat and continuously exchanges heat with the sample stage. When the temperature of the sample stage falls below the preset temperature, the heating power of the heating element needs to be significantly increased to heat the sample stage back to the preset temperature, increasing the energy consumption of the thermostat. Summary of the Invention

[0003] In order to reduce the heating power of the heating element when heating the sample stage and reduce the energy consumption of the thermostat, this application provides a thermostat.

[0004] The thermostat provided in this application adopts the following technical solution:

[0005] A thermostat includes: a housing defining an installation space; a cold head disposed within the housing; a receiving space defined at the top of the cold head; an input channel, an output channel, and a discharge channel defined at the top wall of the cold head; a sample stage disposed on the top wall of the cold head; a temperature sensing element and a heating element disposed on the sample stage; the temperature sensing element being used to detect the temperature of the sample stage; and components adapted to be placed on the sample stage.

[0006] A control mechanism is provided within the accommodating space. The control mechanism includes a separator, a sealing element, and a drive element. The separator divides the accommodating space into a cooling space and a conveying space. The cooling space is located on the side of the separator closer to the sample stage, and the conveying space is located on the side of the separator away from the sample stage. The input channel and the output channel are both connected to the conveying space. The discharge channel is connected between the cooling space and the output channel. Cooling medium flows into the conveying space through the input channel and flows out of the accommodating space through the output channel and the discharge channel. The separator has a connecting hole that is connected to both the cooling space and the conveying space. The sealing element is movably disposed within the accommodating space and opposite to the connecting hole. The sealing element is adapted to block the connecting hole. The drive element is drively connected to the sealing element and is used to drive the sealing element to move closer to or away from the connecting hole.

[0007] The controller is communicatively connected to both the temperature detection element and the drive element. The controller is used to control the working state of the drive element according to the detection signal of the temperature detection element, and to control the heating element to start or stop heating.

[0008] By adopting the above technical solution, when the temperature of the sample stage is lower than the preset temperature, the controller controls the drive component to drive the sealing component to block the connecting hole based on the detection signal of the temperature detection component. The cooling medium located in the conveying space cannot enter the cooling space, and the cooling medium cannot exchange heat with the sample stage. Compared with existing technologies, the heating power of the heating element can be reduced, thereby reducing the energy consumption of the thermostat.

[0009] Preferably, the separator has a first support on the end wall near the cooling space and a second support on the end wall away from the cooling space. The driving member is disposed on the first support. The sealing member includes a first sealing part and a connecting part. The first sealing part is connected and cooperates with the connecting part. The first sealing part is adapted to block the communicating hole. The connecting part passes through the second support and is slidably disposed on the second support. A first elastic member is elastically deformable and disposed between the first sealing part and the second support. The first elastic member is sleeved on the outside of the connecting part. The driving member is drively connected to the connecting part.

[0010] By adopting the above technical solution, when the driving member drives the connecting part to move the first sealing part closer to the separator, the first elastic member assists in driving the first sealing part closer to the separator. When the first sealing part blocks the connecting hole, the first elastic member applies a force towards the separator to the first sealing part so that the first sealing part can fit tightly against the inner peripheral wall of the connecting hole. This can improve the sealing effect between the first sealing part and the connecting hole, minimize the possibility of the cooling medium entering the cooling space through the gap between the first sealing part and the connecting hole, and prevent the cooling medium from exchanging heat with the sample stage when the heating member heats the sample stage.

[0011] Preferably, the sealing member further includes a second sealing part, the connecting part is provided with a stop part, the stop part is located on the side of the second bracket away from the first bracket, the second sealing part is slidably sleeved on the outer peripheral wall of the connecting part, and the second sealing part is located on the side of the stop part away from the second bracket, the second elastic member is elastically deformable and disposed between the second sealing part and the stop part, and the second elastic member is sleeved on the outside of the connecting part, the second sealing part is adapted to be opposite to the output channel and adapted to block the output channel, and the driving member drives the connecting part to move the second sealing part closer to or away from the output channel.

[0012] When the first blocking part blocks the connecting hole, the second blocking part opens the output channel; when the first blocking part opens the connecting hole, the second blocking part blocks the output channel.

[0013] By adopting the above technical solution, when the driving component drives the connecting part to move the first sealing part away from the separator, the driving component drives the connecting part to move the second sealing part closer to the output channel. The second sealing part abuts against the lower end wall of the conveying space and blocks the output channel. All the cooling medium in the conveying space enters the cooling space through the connecting hole, thereby increasing the cooling speed of the sample stage and improving the temperature control experience. Furthermore, when the second sealing part abuts against the lower end wall of the conveying space and blocks the output channel, the second elastic element is compressed. The second elastic element applies a force towards the output channel to the second sealing part, ensuring a tight fit between the second sealing part and the lower end wall of the conveying space. This minimizes the possibility of the cooling medium in the conveying space entering the output channel through the gap between the second sealing part and the lower end wall of the conveying space.

[0014] Preferably, the end wall of the connecting portion away from the second bracket is provided with a limiting portion, the limiting portion is located on the side of the second sealing portion away from the second bracket, and the limiting portion is adapted to limit and cooperate with the second sealing portion.

[0015] By adopting the above technical solution, when the driving member drives the second sealing part to move away from the output channel, the second elastic member applies a force towards the output channel to the second sealing part. The second sealing part and the limiting part stop and limit each other, thereby preventing the second sealing part from detaching from the connecting part and preventing the second sealing part from failing to block the output channel, thus improving the working reliability of the thermostat.

[0016] Preferably, the first bracket is provided with a guide rod, and the end wall of the sealing member near the cooling space is provided with a guide hole, and the guide rod and the guide hole are guided and engaged.

[0017] By adopting the above technical solution, the guide rod and guide hole are guided and matched, thereby preventing the connecting part from deviating from the preset movement trajectory, preventing the connecting part from failing to drive the first sealing part to seal the connecting hole, and preventing the connecting part from failing to drive the second sealing part to seal the output channel, thereby further improving the working reliability of the thermostat.

[0018] Preferably, the discharge channel is equipped with a one-way valve.

[0019] By adopting the above technical solution, the cooling medium located in the output channel can be prevented from flowing into the cooling space and exchanging heat with the sample stage when the heating element heats the sample stage. This can prevent the cooling medium from interfering with the heating element's heating of the sample stage, thereby improving the working reliability of the thermostat.

[0020] Preferably, the thermostat further includes a radiation shield, which is disposed inside the housing and sleeved on the outside of the cold head, and is used to prevent heat radiation.

[0021] By adopting the above technical solution, the thermal radiation propagated from the external environment into the shell can have a significant impact on the temperature of the sample stage. The radiation shield can prevent the thermal radiation propagated from the external environment into the sample stage as much as possible, thereby minimizing the impact of thermal radiation from the external environment on the sample stage. This can improve the temperature stability of the sample stage and prevent excessive temperature fluctuations from causing deviations in the experimental results of the parts.

[0022] Preferably, the housing is provided with a transmissive part, which is opposite to the sample stage, and light passes through the transmissive part to illuminate the part.

[0023] By adopting the above technical solution, the tester aligns the optical testing equipment with the transmission part, and the optical testing equipment emits light towards the part, thereby achieving the technical effect of optical experimentation on the part and improving the user experience of the thermostat.

[0024] Preferably, the housing includes a first outer shell, a second outer shell, and a support base. Along the height direction of the thermostat, the support base is located at one end of the first outer shell, and the second outer shell is located at the other end of the first outer shell. Quick-release clamps are wound around the first outer shell and the second outer shell, as well as between the first outer shell and the support base, to lock or unlock the first outer shell and the second outer shell, and to lock or unlock the first outer shell and the support base. The first outer shell, the second outer shell, and the support base are all sealed together in pairs.

[0025] By adopting the above technical solution, testers can quickly unlock the first and second outer shells using quick-release clamps. Then, testers can disassemble the radiation shield to replace parts. After replacing the parts, testers can quickly lock the first and second outer shells using quick-release clamps. This setup can shorten the time for testers to install and disassemble the first and second outer shells, thereby improving the testing efficiency of parts and enhancing the user experience of the thermostat.

[0026] Preferably, the quick-release clamp includes multiple clamping members and multiple hinge members. The multiple clamping members and multiple hinge members are spaced apart along the circumferential direction of the housing, and the multiple clamping members are all wrapped around the outer peripheral wall of the housing. A hinge member is pivotally connected between any two adjacent clamping members. The clamping members are adapted to clamp the top edge of the first housing and the bottom edge of the second housing, as well as the bottom edge of the first housing and the top edge of the support base. Along the length direction of the quick-release clamp, the fastener passes sequentially through the clamping member located at the beginning and the clamping member located at the end of the multiple clamping members to fix the corresponding two clamping members.

[0027] By adopting the above technical solution, when the quick-release clamp is installed between the first and second outer shells, multiple clamping parts are arranged around the outer peripheral wall of the upper end of the first outer shell and the outer peripheral wall of the lower end of the second outer shell. The multiple clamping parts clamp the edges of the upper end of the first outer shell and the edges of the lower end of the second outer shell, thereby achieving the technical effect of locking the first and second outer shells. Furthermore, by fastening the clamping parts at the head and the clamping parts at the tail of the multiple clamping parts, the technical effect of fixing the quick-release clamp between the first and second outer shells can be achieved. This can prevent the multiple clamping parts from moving away from the first and second outer shells and can prevent the clamping parts from failing to clamp the edges of the upper end of the first outer shell and the edges of the lower end of the second outer shell.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. When the sample stage temperature is lower than the preset temperature, the controller controls the drive component to drive the sealing component to block the connecting hole based on the detection signal from the temperature sensor. The cooling medium located in the conveying space cannot enter the cooling space, and therefore cannot exchange heat with the sample stage. Compared with existing technologies, this reduces the heating power of the heating element, thereby reducing the energy consumption of the thermostat.

[0030] 2. When the driving member drives the connecting part to move the first sealing part closer to the separator, the first elastic member assists in driving the first sealing part closer to the separator. When the first sealing part blocks the connecting hole, the first elastic member applies a force toward the separator to the first sealing part so that the first sealing part can fit tightly against the inner peripheral wall of the connecting hole. This can improve the sealing effect between the first sealing part and the connecting hole, and can minimize the entry of the cooling medium into the cooling space through the gap between the first sealing part and the connecting hole. It can also prevent the cooling medium from exchanging heat with the sample stage when the heating element heats the sample stage.

[0031] 3. Testers can quickly unlock the first and second outer shells using quick-release clamps, and then remove the radiation shield to replace parts. After replacing the parts, testers can quickly lock the first and second outer shells using quick-release clamps. This setup can shorten the time testers spend installing and removing the first and second outer shells, thereby improving the testing efficiency of parts and enhancing the user experience of the thermostat. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the thermostat according to the embodiments of this application;

[0033] Figure 2 This is a cross-sectional view of the thermostat according to an embodiment of this application;

[0034] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0035] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0036] Figure 5 yes Figure 2 Enlarged diagram of point C in the middle.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100. Thermostat;

[0039] 1. Housing; 11. Installation space; 12. Cold head; 121. Receiving space; 122. Input channel; 123. Output channel; 124. Discharge channel; 1241. One-way valve; 125. Sample stage; 126. Temperature detection element; 127. Heating element; 128. Cooling space; 129. Conveying space; 13. Transmitting part; 14. First outer shell; 15. Second outer shell; 16. Support base; 17. Quick-release clamp; 171. Clamping element; 172. Hinge element; 173. Fastener;

[0040] 2. Control mechanism; 21. Separator; 211. Connecting hole; 212. First bracket; 2121. Guide rod; 213. Second bracket; 22. Sealing component; 221. First sealing part; 222. Connecting part; 223. First elastic element; 224. Second sealing part; 225. Stopping part; 226. Second elastic element; 227. Limiting part; 228. Guide hole; 23. Driving component;

[0041] 3. Radiation shield. Detailed Implementation

[0042] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0043] This application discloses a thermostat 100.

[0044] Reference Figures 1-4 According to an embodiment of this application, the thermostat 100 includes: a housing 1, a control mechanism 2, and a controller. The housing 1 defines an installation space 11. A cold head 12 is provided inside the housing 1. The top of the cold head 12 defines a receiving space 121. The cold head 12 defines an input channel 122, an output channel 123, and a discharge channel 124. A sample stage 125 is provided on the top wall of the cold head 12. A temperature sensing element 126 and a heating element 127 are provided inside the sample stage 125. The temperature sensing element 126 is used to detect the temperature of the sample stage 125. The parts are adapted to be placed on the sample stage 125. Along the height direction of the thermostat 100, the top of the cold head 12 refers to the upper end of the cold head 12, and the top wall of the cold head 12 refers to the upper end wall of the cold head 12. The height direction of the thermostat 100 can refer to... Figure 1 It should be noted that the accommodating space 121 is not connected to the sample stage 125 in the vertical direction.

[0045] In some specific embodiments, the temperature sensor silicon can be a diode sensor, etc., and the heating element 127 can be a heating wire, etc.

[0046] The control mechanism 2 is located within the accommodating space 121. The control mechanism 2 includes a partition 21, a sealing member 22, and a driving member 23. The partition 21 is fixedly connected to the inner peripheral wall of the accommodating space 121. The partition 21 divides the accommodating space 121 into a cooling space 128 and a conveying space 129. The cooling space 128 is located on the side of the partition 21 closer to the sample stage 125, and the conveying space 129 is located on the side of the partition 21 away from the sample stage 125. That is, the cooling space 128 is located above the partition 21, and the conveying space 129 is located below the partition 21.

[0047] Furthermore, both the input channel 122 and the output channel 123 are connected to the conveying space 129, and the discharge channel 124 is connected between the cooling space 128 and the output channel 123. The cooling medium flows into the conveying space 129 through the input channel 122 and flows out of the receiving space 121 through the output channel 123 and the discharge channel 124. Specifically, one end of the input channel 122 is connected to the conveying end of the cooling medium conveying device, and the other end of the input channel 122 is connected to the conveying space 129. One end of the output channel 123 is connected to the input end of the cooling medium conveying device, and the other end of the output channel 123 is connected to the conveying space 129. The cooling medium conveying device conveys the cooling medium to the conveying space 129 through the input channel 122. The cooling medium in the conveying space 129 flows into the cooling medium conveying device through the output channel 123. The cooling medium conveying device can cool the cooling medium, thereby achieving the technical effect of recycling the cooling medium and reducing the cooling cost of the thermostat 100.

[0048] Furthermore, one end of the discharge channel 124 is connected to the cooling space 128, and the other end of the discharge channel 124 is connected to the output channel 123. The cooling medium located in the cooling space 128 flows into the cooling medium conveying device through the discharge channel 124 and the output channel 123.

[0049] The separator 21 has a connecting hole 211 that extends through the separator 21 along the height direction of the thermostat 100. The connecting hole 211 communicates with both the cooling space 128 and the conveying space 129. The sealing member 22 is movably disposed within the receiving space 121 and is opposite to the connecting hole 211. Specifically, when the sealing member 22 is driven, it moves along the height direction of the thermostat 100 and is adapted to block the connecting hole 211. The driving member 23 is driven by the sealing member 22 and is used to drive the sealing member 22 to move closer to or away from the connecting hole 211. The controller is communicatively connected to both the temperature detection element 126 and the driving member 23. The controller is used to control the working state of the driving member 23 according to the detection signal of the temperature detection element 126, and to control the heating element 127 to start or stop heating.

[0050] Specifically, the temperature detection element 126 detects the temperature of the sample stage 125. When the temperature of the sample stage 125 is higher than the preset temperature, the temperature detection element 126 generates a first detection signal. The controller controls the heating element 127 to stop working according to the first detection signal, and controls the driving element 23 to drive the sealing element 22 away from the separator 21. The connecting hole 211 is not blocked by the sealing element 22. The cooling medium in the conveying space 129 passes through the connecting hole 211 and enters the cooling space 128. The cooling medium in the cooling space 128 cools the sample stage 125 to reduce the temperature of the sample stage 125.

[0051] When the temperature of the sample stage 125 is lower than the preset temperature, the temperature detection element 126 generates a second detection signal. The controller controls the heating element 127 to start working according to the second detection signal, and controls the driving element 23 to drive the sealing element 22 to move closer to the separator 21. The sealing element 22 blocks the connecting hole 211, and the cooling medium located in the conveying space 129 cannot enter the cooling space 128, thereby preventing the sample stage 125 from exchanging heat with the cooling medium and reducing the heating power of the heating element 127 to heat the sample stage 125 to the preset temperature.

[0052] In some specific embodiments, the cooling medium can be helium or the like, and the cooling medium delivery device can be a compressor or the like. It should be noted that the thermostat 100 cools the sample stage 125 by switching helium between a compressed state and an expanded state. When the helium switches from a compressed state to an expanded state, the helium absorbs heat from the sample stage 125 to lower the temperature of the sample stage 125.

[0053] In some specific embodiments, the driving member 23 can be an electromagnet, and the blocking member 22 is provided with a magnetic driving part opposite to the driving member 23. The driving member 23 drives the blocking member 22 to move by driving the magnetic driving part.

[0054] Therefore, when the temperature of the sample stage 125 is lower than the preset temperature, the controller controls the drive component 23 to drive the sealing component 22 to block the connecting hole 211 according to the detection signal of the temperature detection component 126. The cooling medium located in the conveying space 129 cannot enter the cooling space 128, and the cooling medium cannot exchange heat with the sample stage 125. Compared with the prior art, the heating power of the heating component 127 can be reduced, thereby reducing the energy consumption of the thermostat 100.

[0055] Reference Figure 2 and Figure 3 In some embodiments of this application, the partition 21 is provided with a first support 212 on the end wall near the cooling space 128, and a second support 213 is provided on the end wall away from the cooling space 128. That is, along the height direction of the thermostat 100, the first support 212 is located on the upper end wall of the partition 21, and the second support 213 is located on the lower end wall of the partition 21. The driving member 23 is provided on the first support 212. The sealing member 22 includes a first sealing part 221 and a connecting part 222. The first sealing part 221 is connected and cooperates with the outer peripheral wall of the upper end of the connecting part 222. The first sealing part 221 is suitable for sealing the connecting hole 211. The lower end of the connecting part 222 passes through the second support 213 and is slidably disposed on the second support 213. The first elastic member 223 is elastically deformable and disposed between the first sealing part 221 and the second support 213. The first elastic member 223 is sleeved on the outside of the connecting part 222. The driving member 23 is connected to the connecting part 222 in a transmission manner.

[0056] Specifically, when the driving member 23 drives the connecting part 222 to move the first sealing part 221 away from the separator 21, the first sealing part 221 compresses the first elastic member 223. When the driving member 23 drives the connecting part 222 to move the first sealing part 221 closer to the separator 21, the first elastic member 223 assists in driving the first sealing part 221 closer to the separator 21. When the first sealing part 221 blocks the connecting hole 211, the first elastic member 223 applies a force towards the separator 21 to the first sealing part 221 so that the first sealing part 221 can fit tightly against the inner peripheral wall of the connecting hole 211. This can improve the sealing effect between the first sealing part 221 and the connecting hole 211, and can minimize the entry of the cooling medium into the cooling space 128 through the gap between the first sealing part 221 and the connecting hole 211. It can also prevent the cooling medium from exchanging heat with the sample stage 125 when the heating member 127 heats the sample stage 125. It should be noted that when the first sealing part 221 blocks the connecting hole 211, the first elastic element 223 is in a compressed state.

[0057] In some specific embodiments, the first elastic element 223 can be a spring or the like.

[0058] Reference Figure 2 and Figure 3 In some embodiments of this application, the sealing member 22 may further include a second sealing portion 224, and the connecting portion 222 is provided with a stop portion 225. The stop portion 225 is located on the side of the second bracket 213 away from the first bracket 212. The second sealing portion 224 is slidably sleeved on the outer peripheral wall of the connecting portion 222, and the second sealing portion 224 is located on the side of the stop portion 225 away from the second bracket 213. That is, along the height direction of the thermostat 100, the stop portion 225 is located below the second bracket 213, the second sealing portion 224 is sleeved on the lower end of the connecting portion 222, and the second sealing portion 224 is located on the side of the stop portion. Below 225, the second blocking part 224 is adapted to move closer to or away from the second bracket 213 along the connecting part 222, and one end of the output channel 123 communicating with the conveying space 129 is located on the lower end wall of the conveying space 129. The second elastic member 226 is elastically deformable and disposed between the second blocking part 224 and the stop part 225, and the second elastic member 226 is sleeved on the outside of the connecting part 222. The second blocking part 224 is adapted to be opposite to the output channel 123 and adapted to block the output channel 123. The driving member 23 drives the connecting part 222 to move the second blocking part 224 closer to or away from the output channel 123.

[0059] Furthermore, when the first blocking part 221 blocks the connecting hole 211, the second blocking part 224 opens the output channel 123. When the first blocking part 221 opens the connecting hole 211, the second blocking part 224 blocks the output channel 123. Specifically, when the driving member 23 drives the connecting part 222 to move the first blocking part 221 away from the separator 21, the driving member 23 drives the connecting part 222 to move the second blocking part 224 closer to the output channel 123. The second blocking part 224 abuts against the lower end wall of the conveying space 129 and blocks the output channel 123. All the cooling medium in the conveying space 129 enters the cooling space 128 through the connecting hole 211, thereby increasing the cooling speed of the sample stage 125 and the cooling speed of the sample stage 125, thus improving the user experience of the thermostat 100.

[0060] Furthermore, when the driving member 23 drives the connecting part 222 to move the second blocking part 224 closer to the output channel 123, the connecting part 222 simultaneously drives the second elastic member 226 to move closer to the output channel 123. When the second blocking part 224 abuts against the lower end wall of the conveying space 129 and blocks the output channel 123, the second elastic member 226 is compressed. The second elastic member 226 applies a force toward the output channel 123 to the second blocking part 224 so that the second blocking part 224 fits tightly against the lower end wall of the conveying space 129. This can minimize the possibility of the cooling medium located in the conveying space 129 entering the output channel 123 through the gap between the second blocking part 224 and the lower end wall of the conveying space 129.

[0061] Furthermore, when the driving member 23 drives the connecting part 222 to move the first blocking part 221 closer to the separator 21, the driving member 23 drives the connecting part 222 to move the second blocking part 224 away from the output channel 123. The first blocking part 221 blocks the connecting hole 211, and all the cooling medium in the conveying space 129 flows out of the conveying space 129 through the output channel 123.

[0062] It should be noted that when the second blocking part 224 does not block the output channel 123, the second elastic element 226 is in a compressed state.

[0063] In some specific embodiments, the second elastic element 226 can be a spring or the like.

[0064] Reference Figure 2 and Figure 3In some embodiments of this application, the end wall of the connecting part 222 away from the second bracket 213 is provided with a limiting part 227. The limiting part 227 is located on the side of the second blocking part 224 away from the second bracket 213. That is, along the height direction of the thermostat 100, the lower end wall of the connecting part 222 is provided with a limiting part 227, and the second blocking part 224 is located between the stop part 225 and the limiting part 227. When the second blocking part 224 blocks the output channel 123, the limiting part 227 extends into the output channel 123.

[0065] Furthermore, the limiting part 227 is adapted to limit and cooperate with the second blocking part 224. Specifically, when the driving member 23 drives the second blocking part 224 away from the output channel 123, the second elastic member 226 applies a force toward the output channel 123 to the second blocking part 224. The second blocking part 224 and the limiting part 227 stop and limit each other, thereby preventing the second blocking part 224 from disengaging from the connecting part 222 and preventing the second blocking part 224 from failing to block the output channel 123, thereby improving the working reliability of the thermostat 100.

[0066] Reference Figure 2 and Figure 3 In some embodiments of this application, the first bracket 212 is provided with a guide rod 2121, and the end wall of the sealing member 22 near the cooling space 128 is provided with a guide hole 228. The guide hole 228 is constructed as a blind hole. Specifically, along the height direction of the thermostat 100, the guide hole 228 is located on the upper end wall of the connecting part 222, and the guide hole 228 is opposite to the guide rod 2121. The guide hole 228 extends along the height direction of the thermostat 100, and the guide rod 2121 extends into the guide hole 228. The guide rod 2121 and the guide hole 228 are guided and engaged.

[0067] By guiding the guide rod 2121 and the guide hole 228, the connecting part 222 can be prevented from deviating from the preset movement trajectory, the connecting part 222 can be prevented from failing to drive the first sealing part 221 to seal the connecting hole 211, and the connecting part 222 can be prevented from failing to drive the second sealing part 224 to seal the output channel 123, thereby further improving the working reliability of the thermostat 100.

[0068] Reference Figure 2 and Figure 3In some embodiments of this application, a one-way valve 1241 is provided in the discharge channel 124. The cooling medium in the cooling space 128 flows into the output channel 123 through the one-way valve 1241. The cooling medium in the output channel 123 cannot flow into the cooling space 128 through the one-way valve 1241. This can prevent the cooling medium in the output channel 123 from flowing into the cooling space 128 and exchanging heat with the sample stage 125 when the heating element 127 heats the sample stage 125. This can prevent the cooling medium from interfering with the heating element 127 heating the sample stage 125, thereby improving the working reliability of the thermostat 100.

[0069] Reference Figure 2 and Figure 3 In some embodiments of this application, the thermostat 100 may further include: a radiation shield 3, which is disposed inside the housing 1 and sleeved on the outside of the cold head 12. The radiation shield 3 is used to prevent thermal radiation. Specifically, the external environment will transmit thermal radiation into the housing 1. When the preset temperature of the sample stage 125 is low, the thermal radiation transmitted from the external environment into the housing 1 will have a significant impact on the temperature of the sample stage 125. The radiation shield 3 can prevent the thermal radiation transmitted from the external environment into the sample stage 125 as much as possible, thereby minimizing the impact of thermal radiation from the external environment on the sample stage 125, thereby improving the temperature stability of the sample stage 125 and preventing excessive temperature fluctuations of the sample stage 125 from causing deviations in the experimental results of the parts.

[0070] In some specific embodiments, the preset temperature of the sample stage 125 can be -268.15°C.

[0071] Furthermore, the housing 1 may be provided with a vacuum hole, and the vacuum hole is connected to a vacuum pump. The vacuum pump is used to draw gas from the housing 1 so that the housing 1 is in a vacuum state. The vacuum environment can reduce the propagation of heat radiation, thereby reducing the impact of ambient heat radiation on the sample stage 125, and further improving the temperature stability of the sample stage 125.

[0072] Reference Figure 1 and Figure 2 In some embodiments of this application, the housing 1 is provided with a transmission section 13, which is opposite to the sample stage 125. Light passes through the transmission section 13 to illuminate the part. By providing the transmission section 13 in the housing 1, when optical experiments need to be performed on the part, the tester aligns the optical testing equipment with the transmission section 13, and the optical testing equipment emits light towards the part, thereby achieving the technical effect of optical experiments on the part and improving the user experience of the thermostat 100.

[0073] Reference Figure 1 , Figure 2 and Figure 5In some embodiments of this application, the housing 1 includes a first outer shell 14, a second outer shell 15, and a support base 16. Along the height direction of the thermostat 100, the support base 16 is disposed at one end of the first outer shell 14, and the second outer shell 15 is disposed at the other end of the first outer shell 14. That is, the second outer shell 15 is located above the first outer shell 14, the support base 16 is located below the first outer shell 14, and the support base 16 is adapted to be installed on the mounting plane.

[0074] In some specific embodiments, the mounting surface can be a workbench surface, but this application is not limited to this; the mounting surface can also be the ground, etc.

[0075] Quick-release clamps 17 are provided between the first outer shell 14 and the second outer shell 15, and between the first outer shell 14 and the support base 16. The quick-release clamps 17 lock or unlock the first outer shell 14 and the second outer shell 15, and lock or unlock the first outer shell 14 and the support base 16. The first outer shell 14, the second outer shell 15, and the support base 16 are all sealed together.

[0076] When parts need to be replaced, the tester can quickly unlock the first outer shell 14 and the second outer shell 15 using the quick-release clamp 17. Then, the tester can remove the radiation shield 3 to replace the parts. After replacing the parts, the tester can quickly lock the first outer shell 14 and the second outer shell 15 using the quick-release clamp 17. This setting can shorten the time for the tester to install and remove the first outer shell 14 and the second outer shell 15, thereby improving the testing efficiency of the parts and improving the user experience of the thermostat 100.

[0077] Furthermore, when the cold head 12 needs maintenance, the maintenance personnel can quickly unlock the first outer shell 14 and the second outer shell 15, as well as the first outer shell 14 and the support base 16, using the quick-release clamp 17. Then, the maintenance personnel can disassemble the anti-radiation screen 3 to perform maintenance on the cold head 12. After the cold head 12 is repaired, the maintenance personnel can quickly lock the first outer shell 14 and the second outer shell 15, as well as the first outer shell 14 and the support base 16, using the quick-release clamp 17. This setting can shorten the time for maintenance personnel to install and disassemble the first outer shell 14 and the second outer shell 15, as well as the first outer shell 14 and the support base 16, thereby improving the maintenance efficiency of the maintenance personnel and enhancing the user experience of the thermostat 100.

[0078] Reference Figure 1 , Figure 2 and Figure 5In some embodiments of this application, the quick-release clamp 17 includes a plurality of clamping members 171 and a plurality of hinge members 172. The plurality of clamping members 171 and the plurality of hinge members 172 are all spaced apart along the circumferential direction of the housing 1, and the plurality of clamping members 171 are all wrapped around the outer peripheral wall of the housing 1. A hinge member 172 is pivotally connected between any two adjacent clamping members 171. The clamping members 171 are adapted to clamp the top edge of the first housing 14 and the bottom edge of the second housing 15, as well as clamp the bottom edge of the first housing 14 and the top edge of the support base 16. Along the length direction of the quick-release clamp 17, the fastener 173 passes sequentially through the clamping member 171 located at the head and the clamping member 171 located at the tail of the plurality of clamping members 171 to fix the corresponding two clamping members 171.

[0079] It should be noted that there is no hinge 172 connecting the clamping member 171 at the head and the clamping member 171 at the tail among the multiple clamping members 171.

[0080] Specifically, when the quick-release clamp 17 is not installed in the housing 1, the quick-release clamp 17 is elongated. When the quick-release clamp 17 is installed between the first housing 14 and the second housing 15, multiple clamping parts are arranged around the outer peripheral wall of the upper end of the first housing 14 and the outer peripheral wall of the lower end of the second housing 15. The multiple clamping parts clamp the edge of the upper end of the first housing 14 and the edge of the lower end of the second housing 15, thereby achieving the technical effect of locking the first housing 14 and the second housing 15. Furthermore, the clamping part 171 located at the head and the clamping part 171 located at the tail are fixedly connected by the fastener 173, thereby achieving the technical effect of fixing the quick-release clamp 17 between the first housing 14 and the second housing 15. This can prevent the multiple clamping parts from moving away from the first housing 14 and the second housing 15, and can prevent the clamping parts from failing to clamp the edge of the upper end of the first housing 14 and the edge of the lower end of the second housing 15.

[0081] When the quick-release clamp 17 is installed between the first outer shell 14 and the second outer shell 15, multiple clamping parts are arranged around the outer peripheral wall of the lower end of the first outer shell 14 and the outer peripheral wall of the upper end of the support base 16. The multiple clamping parts clamp the edge of the lower end of the first outer shell 14 and the edge of the upper end of the support base 16, thereby achieving the technical effect of locking the first outer shell 14 and the support base 16.

[0082] Furthermore, by loosening the fasteners 173 to unlock the corresponding two clamping parts 171, the quick-release clamps 17 can be removed from between the first housing 14 and the second housing 15 and between the first housing 14 and the support base 16, thereby achieving the technical effect of unlocking the first housing 14 and the second housing 15 and unlocking the first housing 14 and the support base 16.

[0083] In some specific embodiments, the fastener 173 may be a screw or bolt, etc.

[0084] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A thermostat, characterized in that, include: A housing (1) defines an installation space (11). A cold head (12) is provided inside the housing (1). The top of the cold head (12) defines an accommodating space (121). The cold head (12) defines an input channel (122), an output channel (123), and a discharge channel (124). A sample stage (125) is provided on the top wall of the cold head (12). The sample stage (125) is provided with a temperature detection element (126) and a heating element (127). The temperature detection element (126) is used to detect the temperature of the sample stage (125). The parts are adapted to be placed on the sample stage (125). A control mechanism (2) is disposed within the accommodating space (121). The control mechanism (2) includes a partition (21), a sealing component (22), and a driving component (23). The partition (21) divides the accommodating space (121) into a cooling space (128) and a conveying space (129). The cooling space (128) is located on the side of the partition (21) closer to the sample stage (125), and the conveying space (129) is located on the side of the partition (21) away from the sample stage (125). The input channel (122) and the output channel (123) are both connected to the conveying space (129). The discharge channel (124) is connected to the cooling space (128) and the output channel (129). Between 3), the cooling medium flows into the conveying space (129) through the input channel (122) and flows out of the accommodating space (121) through the output channel (123) and the discharge channel (124). The separator (21) is provided with a connecting hole (211), which is connected to both the cooling space (128) and the conveying space (129). The sealing member (22) is movably disposed in the accommodating space (121) and opposite to the connecting hole (211). The sealing member (22) is adapted to block the connecting hole (211). The driving member (23) is connected to the sealing member (22) in a transmission manner. The driving member (23) is used to drive the sealing member (22) to move closer to or away from the connecting hole (211). The controller is communicatively connected to both the temperature detection element (126) and the drive element (23). The controller is used to control the working state of the drive element (23) according to the detection signal of the temperature detection element (126), and to control the heating element (127) to start or stop heating.

2. A thermostat according to claim 1, characterized in that, The separator (21) has a first bracket (212) near the end wall of the cooling space (128), and a second bracket (213) is provided on the end wall of the separator (21) away from the cooling space (128). The drive member (23) is provided on the first bracket (212). The sealing member (22) includes a first sealing part (221) and a connecting part (222). The first sealing part (221) is connected and cooperates with the connecting part (222). The first sealing part (221) is suitable for sealing the connecting hole (211). The connecting part (222) passes through the second bracket (213) and is slidably disposed on the second bracket (213). The first elastic member (223) is elastically deformable and disposed between the first sealing part (221) and the second bracket (213). The first elastic member (223) is sleeved on the outside of the connecting part (222). The drive member (23) is connected to the connecting part (222) in a transmission manner.

3. A thermostat according to claim 2, characterized in that, The sealing member (22) further includes a second sealing part (224). The connecting part (222) is provided with a stop part (225). The stop part (225) is located on the side of the second bracket (213) away from the first bracket (212). The second sealing part (224) is slidably sleeved on the outer peripheral wall of the connecting part (222), and the second sealing part (224) is located on the side of the stop part (225) away from the second bracket (213). The second elastic member (22... 6) The second elastic member (226) is elastically deformably disposed between the second blocking part (224) and the stop part (225), and the second elastic member (226) is sleeved on the outside of the connecting part (222). The second blocking part (224) is adapted to be opposite to the output channel (123) and adapted to block the output channel (123). The driving member (23) drives the connecting part (222) to move the second blocking part (224) closer to or away from the output channel (123). When the first blocking part (221) blocks the connecting hole (211), the second blocking part (224) opens the output channel (123). When the first blocking part (221) opens the connecting hole (211), the second blocking part (224) blocks the output channel (123).

4. A thermostat according to claim 3, characterized in that, The connecting part (222) has a limiting part (227) on the end wall away from the second bracket (213). The limiting part (227) is located on the side of the second blocking part (224) away from the second bracket (213). The limiting part (227) is adapted to limit and cooperate with the second blocking part (224).

5. A thermostat according to claim 2, characterized in that, The first bracket (212) is provided with a guide rod (2121), and the sealing member (22) is provided with a guide hole (228) on the end wall near the cooling space (128). The guide rod (2121) and the guide hole (228) are guided and engaged.

6. A thermostat according to claim 1, characterized in that, The discharge channel (124) is equipped with a one-way valve (1241).

7. A thermostat according to claim 1, characterized in that, Also includes: Radiation shield (3) is disposed inside the housing (1) and sleeved on the outside of the cold head (12). The radiation shield (3) is used to prevent thermal radiation.

8. A thermostat according to claim 1, characterized in that, The housing (1) is provided with a transmission part (13), which is opposite to the sample stage (125), and light passes through the transmission part (13) to irradiate the part.

9. A thermostat according to claim 1, characterized in that, The housing (1) includes a first outer shell (14), a second outer shell (15), and a support base (16). Along the height direction of the thermostat (100), the support base (16) is located at one end of the first outer shell (14), and the second outer shell (15) is located at the other end of the first outer shell (14). Quick-release clamps (17) are wound around the first outer shell (14) and the second outer shell (15), as well as between the first outer shell (14) and the support base (16). The quick-release clamps (17) lock or unlock the first outer shell (14) and the second outer shell (15), as well as lock or unlock the first outer shell (14) and the support base (16). The first outer shell (14), the second outer shell (15), and the support base (16) are all sealed together.

10. A thermostat according to claim 9, characterized in that, The quick-release clamp (17) includes multiple clamping members (171) and multiple hinge members (172). The multiple clamping members (171) and multiple hinge members (172) are spaced apart along the circumferential direction of the housing (1), and the multiple clamping members (171) are all wrapped around the outer peripheral wall of the housing (1). A hinge member (172) is pivotally connected between any two adjacent clamping members (171). The clamping members (171) are adapted to clamp the top edge of the first housing (14) and the bottom edge of the second housing (15), as well as clamp the bottom edge of the first housing (14) and the top edge of the support base (16). Along the length direction of the quick-release clamp (17), the fastener (173) passes through the clamping member (171) located at the head and the clamping member (171) located at the tail in sequence to fix the corresponding two clamping members (171).

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