Thermostat

Abstract

The invention discloses a thermostat. The thermostat comprises a shell, a control mechanism and a controller. A cold head is arranged in the shell, an accommodating space is defined at the top of the cold head, an input channel, an output channel and a discharge channel are defined at the top of the cold head, and a sample table is arranged on the top wall of the cold head and provided with a temperature detection part and a heating part; the control mechanism is arranged in the containing space and comprises a partition part, a plugging part and a driving part, the partition part divides the containing space into a cooling space and a conveying space, the cooling space is located at the top of the partition part, and the conveying space is located at the bottom of the partition part; the discharging channel communicates with the cooling space and the output channel, the partition piece is provided with a communicating hole, the blocking piece is suitable for blocking the communicating hole, and the driving piece is used for driving the blocking piece to move close to or away from the communicating hole; and the controller controls the driving piece to work and controls the heating piece to start or stop heating according to a detection signal of the temperature detection piece. The energy consumption of the thermostat can be reduced.

Description

Technical Field

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

[0002] In the related art, a part is placed on a sample stage in a thermostat, and the thermostat is used to maintain the temperature of the part at a preset temperature, so that optical or electrical experiments can be performed on the part at the preset temperature. The existing thermostat uses a cooling medium and a heating element to cool and heat the sample stage respectively to maintain the temperature of the sample stage at a preset temperature. The cooling medium continuously flows in the thermostat and continuously exchanges heat with the sample stage. When the temperature of the sample stage is lower than the preset temperature, the heating power of the heating element needs to be greatly increased to heat the sample stage to the preset temperature, which increases 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, the present application provides a thermostat.

[0004] The present application provides a thermostat that adopts the following technical solution: A thermostat comprises: a shell, the shell defines an installation space, a cold head is arranged in the shell, the top of the cold head defines a accommodating 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 element and a heating element, the temperature detection element is used to detect the temperature of the sample table, and parts are suitable for being placed on the sample table.

[0005] A control mechanism, wherein the control mechanism is arranged in the accommodating space, the control mechanism comprises a partition, a blocking member and a driving member, the partition divides the accommodating space into a cooling space and a conveying space, the cooling space is located on a side of the partition close to the sample stage, and the conveying space is located on a side of the partition 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, a 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 partition is provided with a connecting hole, the connecting hole is connected to the cooling space and the conveying space, the blocking member is movably arranged in the accommodating space and opposite to the connecting hole, the blocking member is suitable for blocking the connecting hole, the driving member is transmission-connected to the blocking member, and the driving member is used to drive the blocking member to move closer to or away from the connecting hole.

[0006] A controller is communicatively connected with the temperature detecting element and the driving element, and is used to control the working state of the driving element according to the detection signal of the temperature detecting element, and to control the heating element to start or stop heating.

[0007] By adopting the above technical solution, when the temperature of the sample stage is lower than the preset temperature, the controller controls the driving member to drive the blocking member to block the connecting hole according to the detection signal of the temperature detection member, so that the cooling medium in the conveying space cannot enter the cooling space, and the cooling medium cannot exchange heat with the sample stage. Compared with the prior art, the heating power of the heating member can be reduced, thereby reducing the energy consumption of the thermostat.

[0008] Preferably, the partition is provided with a first bracket close to the end wall of the cooling space, and the partition is provided with a second bracket away from the end wall of the cooling space, the driving member is provided on the first bracket, the blocking member includes a first blocking portion and a connecting portion, the first blocking portion is connected and cooperated with the connecting portion, the first blocking portion is suitable for blocking the connecting hole, the connecting portion passes through the second bracket and is slidably arranged on the second bracket, the first elastic member is elastically deformably arranged between the first blocking portion and the second bracket, and the first elastic member is sleeved on the outside of the connecting portion, and the driving member is transmission-connected to the connecting portion.

[0009] By adopting the above technical solution, when the driving member drives the connecting part to drive the first blocking part to move close to the partition, the first elastic member assists in driving the first blocking part to move close to the partition, and when the first blocking part blocks the connecting hole, the first elastic member applies a force toward the partition to the first blocking part, so that the first blocking part can fit tightly with the inner wall of the connecting hole, thereby improving the sealing effect between the first blocking part and the connecting hole, avoiding as much as possible the cooling medium from entering the cooling space through the gap between the first blocking part and the connecting hole, and avoiding heat exchange between the cooling medium and the sample stage when the heating member heats the sample stage.

[0010] Preferably, the blocking member also includes a second blocking portion, the connecting portion is provided with a stop portion, the stop portion is located on a side of the second bracket away from the first bracket, the second blocking portion is slidably sleeved on the outer peripheral wall of the connecting portion, and the second blocking portion is located on a side of the stop portion away from the second bracket, a second elastic member can be elastically deformed and arranged between the second blocking portion and the stop portion, and the second elastic member is sleeved on the outside of the connecting portion, the second blocking portion is suitable for being opposite to the output channel and suitable for blocking the output channel, and the driving member drives the connecting portion to drive the second blocking portion to move closer to or away from the output channel.

[0011] When the first blocking portion blocks the communicating hole, the second blocking portion opens the output channel. When the first blocking portion opens the communicating hole, the second blocking portion blocks the output channel.

[0012] By adopting the above technical solution, when the driving member drives the connecting part to drive the first blocking part to move away from the partition, the driving member drives the connecting part to drive the second blocking part to move closer to the output channel, the second blocking part abuts against the lower end wall of the conveying space and blocks the output channel, and all the cooling medium in the conveying space enters the cooling space through the connecting hole, thereby increasing the speed at which the cooling medium cools the sample stage, increasing the cooling speed of the sample stage, and further improving the user experience of the thermostat. In addition, when the second blocking part abuts against the lower end wall of the conveying space and blocks the output channel, the second elastic member is compressed, and the second elastic member applies a force toward the output channel to the second blocking part, so that the second blocking part fits tightly against the lower end wall of the conveying space, thereby minimizing the cooling medium in the conveying space from entering the output channel through the gap between the second blocking part and the lower end wall of the conveying space.

[0013] Preferably, a limiting portion is provided on an end wall of the connecting portion away from the second bracket, the limiting portion is located on a side of the second blocking portion away from the second bracket, and the limiting portion is suitable for limiting cooperation with the second blocking portion.

[0014] By adopting the above technical solution, when the driving member drives the second blocking part to move away from the output channel, the second elastic member applies a force toward the output channel to the second blocking part, and the second blocking part and the limiting part are stopped and matched, thereby preventing the second blocking part from being separated from the connecting part and preventing the second blocking part from being unable to block the output channel, thereby improving the working reliability of the thermostat.

[0015] Preferably, the first bracket is provided with a guide rod, the blocking member is provided with a guide hole on an end wall close to the cooling space, and the guide rod is in guiding cooperation with the guide hole.

[0016] By adopting the above technical solution, through the cooperation between the guide rod and the guide hole, it is possible to prevent the connecting part from deviating from the preset motion trajectory, prevent the connecting part from being unable to drive the first blocking part to block the connecting hole, and prevent the connecting part from being unable to drive the second blocking part to block the output channel, thereby further improving the working reliability of the thermostat.

[0017] Preferably, a one-way valve is provided in the discharge channel.

[0018] By adopting the above technical solution, it is possible to avoid the cooling medium in the output channel flowing into the cooling space to exchange heat with the sample stage when the heating element heats the sample stage, thereby preventing the cooling medium from interfering with the heating element heating the sample stage, thereby improving the working reliability of the thermostat.

[0019] Preferably, the thermostat further comprises: an anti-radiation screen, the anti-radiation screen is arranged in the shell and sleeved on the outer side of the cold head, and the anti-radiation screen is used to prevent heat radiation.

[0020] By adopting the above technical solution, the heat radiation transmitted from the external environment to the shell will have a great impact on the temperature of the sample stage. The anti-radiation screen can prevent the heat radiation from the external environment to the sample stage as much as possible, thereby avoiding the sample stage from being affected by the heat radiation in the external environment as much as possible, thereby improving the temperature stability of the sample stage and avoiding excessive temperature fluctuations of the sample stage that may lead to deviations in the experimental results of the parts.

[0021] Preferably, the shell is provided with a transmission part, the transmission part is opposite to the sample stage, and light passes through the transmission part to illuminate the part.

[0022] By adopting the above technical solution, the tester aims the optical testing device at the transmission part, and the optical testing device emits light to the part, thereby achieving the technical effect of conducting optical experiments on the part and improving the user experience of the thermostat.

[0023] Preferably, the shell includes a first shell, a second shell and a support seat. Along the height direction of the thermostat, the support seat is arranged at one end of the first shell, and the second shell is arranged at the other end of the first shell. Quick-release clamps are arranged between the first shell and the second shell and between the first shell and the support seat. The first shell and the second shell are locked or unlocked, and the first shell and the support seat are locked or unlocked by the quick-release clamps. The first shell, the second shell and the support seat are sealed each other.

[0024] By adopting the above technical solution, the tester can quickly unlock the first shell and the second shell through the quick-release clamp, and then the tester can remove the radiation shield to replace parts. After completing the replacement of parts, the tester can quickly lock the first shell and the second shell through the quick-release clamp. Such a setting can shorten the time for the tester to install and remove the first shell and the second shell, thereby improving the testing efficiency of parts and improving the user experience of the thermostat.

[0025] Preferably, the quick-release clamp includes a plurality of clamping members and a plurality of hinged members, and the plurality of clamping members and the plurality of hinged members are spaced apart along the circumferential direction of the shell, and the plurality of clamping members are arranged around the outer peripheral wall of the shell, and one of the hinged members is pivotally connected between any two adjacent clamping members, and the clamping members are suitable for clamping the edge of the top of the first shell and the edge of the bottom of the second shell, as well as clamping the edge of the bottom of the first shell and the edge of the top of the support seat, and along the length direction of the quick-release clamp, the fastener sequentially passes through the clamping member located at the head and the clamping member located at the tail of the plurality of clamping members to fixedly connect the corresponding two clamping members.

[0026] By adopting the above technical solution, when the quick-release clamp is installed between the first shell and the second shell, multiple clamping parts are arranged between the outer peripheral wall of the upper end of the first shell and the outer peripheral wall of the lower end of the second shell, and multiple clamping parts clamp the edge of the upper end of the first shell and the edge of the lower end of the second shell, thereby achieving the technical effect of locking the first shell and the second shell, and the clamping part located at the head and the clamping part located at the tail of the multiple clamping parts are fixedly connected by fasteners, thereby achieving the technical effect of fixing the quick-release clamp between the first shell and the second shell, and preventing the multiple clamping parts from moving away from the first shell and the second shell, and avoiding the clamping parts from being unable to clamp the edge of the upper end of the first shell and the edge of the lower end of the second shell.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the temperature of the sample stage is lower than the preset temperature, the controller controls the driving member to drive the blocking member to block the connecting hole according to the detection signal of the temperature detection member, so that the cooling medium in the conveying space cannot enter the cooling space, and the cooling medium cannot exchange heat with the sample stage. Compared with the prior art, the heating power of the heating member can be reduced, thereby reducing the energy consumption of the thermostat; 2. When the driving member drives the connecting part to drive the first blocking part to move close to the partition, the first elastic member assists in driving the first blocking part to move close to the partition, and when the first blocking part blocks the connecting hole, the first elastic member applies a force toward the partition to the first blocking part, so that the first blocking part can fit tightly with the inner peripheral wall of the connecting hole, thereby improving the sealing effect between the first blocking part and the connecting hole, and preventing the cooling medium from entering the cooling space through the gap between the first blocking part and the connecting hole as much as possible, and preventing the cooling medium from exchanging heat with the sample stage when the heating member heats the sample stage; 3. The tester can quickly unlock the first shell and the second shell through the quick-release clamp, and then the tester removes the radiation shield to replace parts. After completing the replacement of parts, the tester quickly locks the first shell and the second shell through the quick-release clamp. This setting can shorten the time for the tester to install and remove the first shell and the second shell, thereby improving the testing efficiency of parts and improving the user experience of the thermostat. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a thermostat according to an embodiment of the present application; Figure 2 is a cross-sectional view of a thermostat according to an embodiment of the present application; Figure 3 yes Figure 2 The enlarged schematic diagram of point A in the middle; Figure 4 yes Figure 2 The enlarged schematic diagram of point B in the middle; Figure 5 yes Figure 2 Enlarged schematic diagram of point C in the middle.

[0029] Description of reference numerals: 100. Thermostat; 1. Shell; 11. Installation space; 12. Cold head; 121. Accommodation 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. Transmission part; 14. First shell; 15. Second shell; 16. Support seat; 17. Quick release clamp; 171. Clamping element; 172. Articulated element; 173. Fastener; 2. Control mechanism; 21. Separator; 211. Communication hole; 212. First bracket; 2121. Guide rod; 213. Second bracket; 22. Blocking member; 221. First blocking portion; 222. Connecting portion; 223. First elastic member; 224. Second blocking portion; 225. Stopping portion; 226. Second elastic member; 227. Limiting portion; 228. Guide hole; 23. Driving member; 3. Anti-radiation screen. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0031] The embodiment of the present application discloses a thermostat 100 .

[0032] Reference Figure 1-Figure 4According to the embodiment of the present application, the thermostat 100 includes: a shell 1, a control mechanism 2 and a controller. The shell 1 defines an installation space 11, a cold head 12 is arranged in the shell 1, and a receiving space 121 is defined at the top of the cold head 12. The cold head 12 defines an input channel 122, an output channel 123 and a discharge channel 124. A sample table 125 is arranged on the top wall of the cold head 12. A temperature detection element 126 and a heating element 127 are arranged in the sample table 125. The temperature detection element 126 is used to detect the temperature of the sample table 125. The parts are suitable for being placed on the sample table 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, the top wall of the cold head 12 refers to the upper end wall of the cold head 12, and the height direction of the thermostat 100 can refer to Figure 1 In the up and down direction, it should be noted that the accommodating space 121 is not connected to the sample stage 125.

[0033] In some specific embodiments, the temperature sensor silicon may be a diode sensor or the like, and the heating element 127 may be a heating wire or the like.

[0034] The control mechanism 2 is arranged in the accommodating space 121, and 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 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 close 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 to say, the cooling space 128 is located above the partition 21, and the conveying space 129 is located below the partition 21.

[0035] Furthermore, the input channel 122 and the output channel 123 are both connected to the conveying space 129, and the exhaust 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 accommodating space 121 through the output channel 123 and the exhaust 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, and the cooling medium in the conveying space 129 flows into the cooling medium conveying device through the output channel 123, and the cooling medium conveying device can refrigerate the cooling medium, thereby achieving the technical effect of recycling the cooling medium, thereby reducing the refrigeration cost of the thermostat 100.

[0036] Furthermore, one end of the discharge channel 124 is communicated with the cooling space 128 , and the other end of the discharge channel 124 is communicated with the output channel 123 . The cooling medium in the cooling space 128 flows into the cooling medium conveying device through the discharge channel 124 and the output channel 123 .

[0037] The partition 21 is provided with a connecting hole 211, which penetrates the partition 21 along the height direction of the thermostat 100, and the connecting hole 211 is connected to both the cooling space 128 and the conveying space 129. The blocking member 22 is movably arranged in the accommodating space 121 and is opposite to the connecting hole 211. Specifically, when the blocking member 22 is driven, the blocking member 22 moves along the height direction of the thermostat 100, and the blocking member 22 is suitable for blocking the connecting hole 211. The driving member 23 is connected to the blocking member 22 in a transmission manner, and the driving member 23 is used to drive the blocking member 22 to move closer to or away from the connecting hole 211. The controller is in communication connection with both the temperature detection member 126 and the driving member 23, and the controller is used to control the working state of the driving member 23 according to the detection signal of the temperature detection member 126, and control the heating member 127 to start or stop heating.

[0038] Specifically, the temperature detection component 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 component 126 generates a first detection signal. The controller controls the heating component 127 to stop working according to the first detection signal, and controls the driving component 23 to drive the blocking component 22 to move away from the partition 21. The connecting hole 211 is not blocked by the blocking component 22. The cooling medium in the conveying space 129 passes through the connecting hole 211 and enters into 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.

[0039] 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 close to the partition 21. The sealing element 22 blocks the connecting hole 211, and the cooling medium 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.

[0040] In some specific embodiments, the cooling medium may be helium, etc., and the cooling medium delivery device may be a compressor, etc. It should be noted that the thermostat 100 cools the sample stage 125 by switching between a compressed state and an expanded state using helium. When the helium is switched from the compressed state to the expanded state, the helium absorbs the heat of the sample stage 125 to reduce the temperature of the sample stage 125.

[0041] In some specific embodiments, the driving member 23 may be an electromagnet, and the blocking member 22 is provided with a magnetic driving portion opposite to the driving member 23 , and the driving member 23 drives the blocking member 22 to move by driving the magnetic driving portion.

[0042] Thus, when the temperature of the sample stage 125 is lower than the preset temperature, the controller controls the driving member 23 to drive the blocking member 22 to block the connecting hole 211 according to the detection signal of the temperature detection member 126, so that the cooling medium 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 member 127 can be reduced, thereby reducing the energy consumption of the thermostat 100.

[0043] Reference Figure 2 and Figure 3 In some embodiments of the present application, a first bracket 212 is provided on the end wall of the partition 21 close to the cooling space 128, and a second bracket 213 is provided on the end wall of the partition 21 away from the cooling space 128, that is, along the height direction of the thermostat 100, the first bracket 212 is located at the upper end wall of the partition 21, and the second bracket 213 is located at the lower end wall of the partition 21, the driving member 23 is provided on the first bracket 212, the blocking member 22 includes a first blocking portion 221 and a connecting portion 222, the first blocking portion 221 is connected and cooperated with the outer peripheral wall of the upper end of the connecting portion 222, the first blocking portion 221 is suitable for blocking the connecting hole 211, the lower end of the connecting portion 222 passes through the second bracket 213 and is slidably arranged on the second bracket 213, the first elastic member 223 can be elastically deformed and arranged between the first blocking portion 221 and the second bracket 213, and the first elastic member 223 is sleeved on the outside of the connecting portion 222, and the driving member 23 is transmission-connected with the connecting portion 222.

[0044] Specifically, when the driving member 23 drives the connecting part 222 to drive the first blocking part 221 to move away from the partition 21, the first blocking part 221 compresses the first elastic member 223. When the driving member 23 drives the connecting part 222 to drive the first blocking part 221 to move close to the partition 21, the first elastic member 223 assists in driving the first blocking part 221 to move close to the partition 21, and when the first blocking part 221 blocks the connecting hole 211, the first elastic member 223 applies a force toward the partition 21 to the first blocking part 221, so that the first blocking part 221 can fit tightly with the inner wall of the connecting hole 211, thereby improving the sealing effect between the first blocking part 221 and the connecting hole 211, avoiding the cooling medium from entering the cooling space 128 through the gap between the first blocking part 221 and the connecting hole 211 as much as possible, and avoiding heat exchange between the cooling medium and the sample stage 125 when the heating member 127 heats the sample stage 125. It should be noted that when the first blocking portion 221 blocks the communicating hole 211 , the first elastic member 223 is in a compressed state.

[0045] In some specific embodiments, the first elastic member 223 may be a spring or the like.

[0046] Reference Figure 2 and Figure 3 In some embodiments of the present application, the blocking member 22 may further include a second blocking portion 224, 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 blocking portion 224 is slidably sleeved on the outer peripheral wall of the connecting portion 222, and the second blocking 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 blocking portion 224 is sleeved on the lower end of the connecting portion 222, and the second blocking portion 224 is located at the stop portion 225, the second blocking portion 224 is suitable for moving along the connecting portion 222 towards or away from the second bracket 213, and the end of the output channel 123 connected to the conveying space 129 is located at the lower end wall of the conveying space 129, the second elastic member 226 can be elastically deformed and arranged between the second blocking portion 224 and the stop portion 225, and the second elastic member 226 is sleeved on the outer side of the connecting portion 222, the second blocking portion 224 is suitable for being opposite to the output channel 123 and suitable for blocking the output channel 123, and the driving member 23 drives the connecting portion 222 to drive the second blocking portion 224 to move towards or away from the output channel 123.

[0047] Furthermore, when the first blocking portion 221 blocks the connecting hole 211, the second blocking portion 224 opens the output channel 123; when the first blocking portion 221 opens the connecting hole 211, the second blocking portion 224 blocks the output channel 123. Specifically, when the driving member 23 drives the connecting portion 222 to drive the first blocking portion 221 to move away from the partition 21, the driving member 23 drives the connecting portion 222 to drive the second blocking portion 224 to move closer to the output channel 123. The second blocking portion 224 abuts against the lower end wall of the conveying space 129 and blocks the output channel 123. All cooling medium in the conveying space 129 enters the cooling space 128 through the connecting hole 211, thereby increasing the speed at which the cooling medium cools the sample stage 125, increasing the cooling speed of the sample stage 125, and further improving the user experience of the thermostat 100.

[0048] Furthermore, when the driving member 23 drives the connecting part 222 to drive the second blocking part 224 to move close to the output channel 123, the connecting part 222 synchronously drives the second elastic member 226 to move close 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, and 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, thereby minimizing the cooling medium in the conveying space 129 from entering the output channel 123 through the gap between the second blocking part 224 and the lower end wall of the conveying space 129.

[0049] Moreover, when the driving member 23 drives the connecting part 222 to drive the first blocking part 221 to move closer to the partition 21, the driving member 23 drives the connecting part 222 to drive the second blocking part 224 to move away from the output channel 123, and 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.

[0050] It should be noted that when the second blocking portion 224 does not block the output channel 123 , the second elastic member 226 is in a compressed state.

[0051] In some specific embodiments, the second elastic member 226 may be a spring or the like.

[0052] Reference Figure 2 and Figure 3In some embodiments of the present application, a limiting portion 227 is provided on the end wall of the connecting portion 222 away from the second bracket 213, and the limiting portion 227 is located on the side of the second blocking portion 224 away from the second bracket 213. That is, along the height direction of the thermostat 100, the limiting portion 227 is provided on the lower end wall of the connecting portion 222, and the second blocking portion 224 is located between the stop portion 225 and the limiting portion 227. When the second blocking portion 224 blocks the output channel 123, the limiting portion 227 extends into the output channel 123.

[0053] In addition, the limiting portion 227 is suitable for limiting cooperation with the second blocking portion 224. Specifically, when the driving member 23 drives the second blocking portion 224 to move away from the output channel 123, the second elastic member 226 applies a force toward the output channel 123 to the second blocking portion 224, and the second blocking portion 224 and the limiting portion 227 are stopped and limitedly cooperated, thereby preventing the second blocking portion 224 from detaching from the connecting portion 222 and preventing the second blocking portion 224 from failing to block the output channel 123, thereby improving the working reliability of the thermostat 100.

[0054] Reference Figure 2 and Figure 3 In some embodiments of the present application, the first bracket 212 is provided with a guide rod 2121, and the end wall of the sealing member 22 close to the cooling space 128 is provided with a guide hole 228, and the guide hole 228 is configured 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 portion 222, and the guide hole 228 is opposite to the guide rod 2121, and the guide hole 228 is extended along the height direction of the thermostat 100, the guide rod 2121 extends into the guide hole 228, and the guide rod 2121 is guided and matched with the guide hole 228.

[0055] By means of the guiding cooperation between the guide rod 2121 and the guide hole 228, the connection part 222 can be prevented from deviating from the preset motion trajectory, the connection part 222 can be prevented from being unable to drive the first blocking part 221 to block the connecting hole 211, and the connection part 222 can be prevented from being unable to drive the second blocking part 224 to block the output channel 123, thereby further improving the working reliability of the thermostat 100.

[0056] Reference Figure 2 and Figure 3In some embodiments of the present application, a one-way valve 1241 is provided in the discharge channel 124, and the cooling medium in the cooling space 128 flows into the output channel 123 through the one-way valve 1241, and the cooling medium in the output channel 123 cannot flow into the cooling space 128 through the one-way valve 1241, thereby preventing 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, thereby preventing the cooling medium from interfering with the heating element 127 in heating the sample stage 125, and thereby improving the working reliability of the thermostat 100.

[0057] Reference Figure 2 and Figure 3 In some embodiments of the present application, the thermostat 100 may further include: an anti-radiation shield 3, which is arranged in the shell 1 and is sleeved on the outer side of the cold head 12. The anti-radiation shield 3 is used to prevent thermal radiation. Specifically, the external environment will transmit thermal radiation into the shell 1. When the preset temperature of the sample stage 125 is low, the thermal radiation transmitted from the external environment to the shell 1 will have a greater impact on the temperature of the sample stage 125. The anti-radiation shield 3 can prevent the thermal radiation transmitted from the external environment to the sample stage 125 as much as possible, thereby avoiding the sample stage 125 from being affected by the thermal radiation in the external environment as much as possible, thereby improving the temperature stability of the sample stage 125, and avoiding excessive temperature fluctuations of the sample stage 125 that lead to deviations in the experimental results of the parts.

[0058] In some specific embodiments, the preset temperature of the sample stage 125 may be -268.15°C.

[0059] Furthermore, the shell 1 can be provided with a vacuum hole, and the vacuum hole is connected to a vacuum pump, and the vacuum pump is used to suck the gas in the shell 1 to make the shell 1 in a vacuum state. The vacuum environment can reduce the propagation of heat radiation, thereby reducing the impact of environmental heat radiation on the sample stage 125, and further improving the temperature stability of the sample stage 125.

[0060] Reference Figure 1 and Figure 2 In some embodiments of the present application, the housing 1 is provided with a transmission portion 13, which is opposite to the sample stage 125, and light passes through the transmission portion 13 to illuminate the part. By providing the transmission portion 13 on the housing 1, when an optical experiment is required on the part, the tester aligns the optical testing device with the transmission portion 13, and the optical testing device emits light to the part, thereby achieving the technical effect of performing an optical experiment on the part and improving the user experience of the thermostat 100.

[0061] Reference Figure 1 , Figure 2 and Figure 5In some embodiments of the present application, the housing 1 includes a first shell 14, a second shell 15 and a support base 16. Along the height direction of the thermostat 100, the support base 16 is arranged at one end of the first shell 14, and the second shell 15 is arranged at the other end of the first shell 14, that is, the second shell 15 is located above the first shell 14, the support base 16 is located below the first shell 14, and the support base 16 is suitable for being installed on a mounting plane.

[0062] In some specific embodiments, the installation plane may be a workbench surface, but the present application is not limited thereto, and the installation plane may also be the ground, etc.

[0063] A quick release clamp 17 is arranged between the first shell 14 and the second shell 15 and between the first shell 14 and the support seat 16. The quick release clamp 17 is used to lock or unlock the first shell 14 and the second shell 15, and to lock or unlock the first shell 14 and the support seat 16. The first shell 14, the second shell 15 and the support seat 16 are sealed with each other.

[0064] When parts need to be replaced, the tester can quickly unlock the first shell 14 and the second shell 15 through the quick-release clamp 17, and then the tester removes the radiation protection screen 3 to replace the parts. After completing the replacement of the parts, the tester quickly locks the first shell 14 and the second shell 15 through the quick-release clamp 17. This arrangement can shorten the time for the tester to install and remove the first shell 14 and the second shell 15, thereby improving the testing efficiency of the parts and improving the user experience of the thermostat 100.

[0065] Furthermore, when the cold head 12 needs to be repaired, the maintenance personnel can quickly unlock the first shell 14 and the second shell 15, and quickly unlock the first shell 14 and the support seat 16 through the quick-release clamp 17, and then the maintenance personnel can remove the radiation protection screen 3, and the maintenance personnel can repair the cold head 12. After the maintenance of the cold head 12 is completed, the maintenance personnel quickly lock the first shell 14 and the second shell 15, and quickly lock the first shell 14 and the support seat 16 through the quick-release clamp 17. Such a setting can shorten the time for the maintenance personnel to install and remove the first shell 14 and the second shell 15 and the first shell 14 and the support seat 16, thereby improving the maintenance efficiency of the maintenance personnel and improving the user experience of the thermostat 100.

[0066] Reference Figure 1 , Figure 2 and Figure 5In some embodiments of the present application, the quick-release clamp 17 includes a plurality of clamping members 171 and a plurality of hinged members 172, and the plurality of clamping members 171 and the plurality of hinged members 172 are spaced apart along the circumferential direction of the shell 1, and the plurality of clamping members 171 are arranged around the outer peripheral wall of the shell 1, and a hinged member 172 is pivotally connected between any two adjacent clamping members 171, and the clamping member 171 is suitable for clamping the edge of the top of the first shell 14 and the edge of the bottom of the second shell 15, as well as clamping the edge of the bottom of the first shell 14 and the edge of the top of the support seat 16, and along the length direction of the quick-release clamp 17, the fastener 173 passes through the clamping member 171 at the head and the clamping member 171 at the tail in sequence among the plurality of clamping members 171 to fixedly connect the corresponding two clamping members 171.

[0067] It should be noted that, among the plurality of clamping members 171 , no hinge member 172 is connected between the clamping member 171 at the front portion and the clamping member 171 at the rear portion.

[0068] Specifically, when the quick-release clamp 17 is not installed to the shell 1, the shape of the quick-release clamp 17 is constructed as a long strip. When the quick-release clamp 17 is installed between the first shell 14 and the second shell 15, multiple clamping parts are arranged between the outer peripheral wall of the upper end of the first shell 14 and the outer peripheral wall of the lower end of the second shell 15. Multiple clamping parts clamp the edge of the upper end of the first shell 14 and the edge of the lower end of the second shell 15, thereby achieving the technical effect of locking the first shell 14 and the second shell 15, and the clamping part 171 located at the head and the clamping part 171 located at the tail of the multiple clamping parts 171 are fixedly connected by the fastener 173, so as to achieve the technical effect of fixing the quick-release clamp 17 between the first shell 14 and the second shell 15, and prevent the multiple clamping parts from moving away from the first shell 14 and the second shell 15, so as to avoid the clamping parts from being unable to clamp the edge of the upper end of the first shell 14 and the edge of the lower end of the second shell 15.

[0069] When the quick-release clamp 17 is installed between the first shell 14 and the second shell 15, multiple clamping parts are arranged between the outer peripheral wall of the lower end of the first shell 14 and the outer peripheral wall of the upper end of the support seat 16, and multiple clamping parts clamp the edge of the lower end of the first shell 14 and the edge of the upper end of the support seat 16, thereby achieving the technical effect of locking the first shell 14 and the support seat 16.

[0070] Furthermore, by loosening the fastener 173 to unlock the corresponding two clamps 171, the quick-release clamp 17 can be removed from between the first shell 14 and the second shell 15 and between the first shell 14 and the support seat 16, thereby achieving the technical effect of unlocking the first shell 14 and the second shell 15 and unlocking the first shell 14 and the support seat 16.

[0071] In some specific embodiments, the fastener 173 may be a screw or a bolt.

[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A thermostat, characterized in that: include: A shell (1), wherein the shell (1) defines an installation space (11), a cold head (12) is arranged inside the shell (1), a accommodating space (121) is defined at the top of the cold head (12), the cold head (12) defines an input channel (122), an output channel (123) and a discharge channel (124), a sample table (125) is arranged on the top wall of the cold head (12), the sample table (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 table (125), and a part is suitable for being placed on the sample table (125); A control mechanism (2), wherein the control mechanism (2) is arranged in the accommodating space (121), and the control mechanism (2) comprises a partition (21), a blocking member (22) and a driving member (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 a side of the partition (21) close to the sample stage (125); the conveying space (129) is located on a 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); and the discharge channel (124) is connected to the cooling space (128) and the output channel (12 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 partition (21) is provided with a connecting hole (211), the connecting hole (211) is connected with both the cooling space (128) and the conveying space (129), the blocking member (22) is movably arranged in the accommodating space (121) and opposite to the connecting hole (211), the blocking member (22) is suitable for blocking the connecting hole (211), the driving member (23) is transmission-connected with the blocking member (22), and the driving member (23) is used to drive the blocking member (22) to move closer to or away from the connecting hole (211); A controller is communicatively connected with the temperature detection element (126) and the driving element (23), and is used to control the working state of the driving 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 partition (21) is provided with a first bracket (212) on the end wall close to the cooling space (128), and the partition (21) is provided with a second bracket (213) on the end wall away from the cooling space (128); the driving member (23) is provided on the first bracket (212); the blocking member (22) comprises a first blocking portion (221) and a connecting portion (222); the first blocking portion (221) is connected and cooperated with the connecting portion (222); the first blocking portion (221) is suitable for blocking the connecting hole (211); the connecting portion (222) passes through the second bracket (213) and is slidably arranged on the second bracket (213); the first elastic member (223) is elastically deformably arranged between the first blocking portion (221) and the second bracket (213), and the first elastic member (223) is sleeved on the outer side of the connecting portion (222); the driving member (23) is transmission-connected with the connecting portion (222).

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

4. A thermostat according to claim 3, characterized in that: A limiting portion (227) is provided on the end wall of the connecting portion (222) away from the second bracket (213); the limiting portion (227) is located on a side of the second blocking portion (224) away from the second bracket (213); and the limiting portion (227) is suitable for limiting cooperation with the second blocking portion (224).

5. A thermostat according to claim 2, characterized in that: The first bracket (212) is provided with a guide rod (2121), the end wall of the blocking member (22) close to the cooling space (128) is provided with a guide hole (228), and the guide rod (2121) is in guiding cooperation with the guide hole (228).

6. A thermostat according to claim 1, characterized in that: A one-way valve (1241) is provided in the discharge channel (124).

7. A thermostat according to claim 1, characterized in that: Also includes: An anti-radiation screen (3) is arranged in the housing (1) and sleeved on the outside of the cold head (12), and the anti-radiation screen (3) is used to prevent heat radiation.

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

9. A thermostat according to claim 1, characterized in that: The housing (1) comprises a first housing (14), a second housing (15) and a support seat (16); along the height direction of the thermostat (100), the support seat (16) is arranged at one end of the first housing (14), and the second housing (15) is arranged at the other end of the first housing (14); a quick release clamp (17) is arranged between the first housing (14) and the second housing (15) and between the first housing (14) and the support seat (16); the first housing (14) and the second housing (15) are locked or unlocked, and the first housing (14) and the support seat (16) are locked or unlocked by the quick release clamp (17); the first housing (14), the second housing (15) and the support seat (16) are sealed with each other.

10. A thermostat according to claim 9, characterized in that: The quick-release clamp (17) comprises a plurality of clamping members (171) and a plurality of hinged members (172). The plurality of clamping members (171) and the plurality of hinged members (172) are arranged at intervals along the circumferential direction of the shell (1), and the plurality of clamping members (171) are arranged around the outer peripheral wall of the shell (1). One of the hinged members (172) is pivotally connected between any two adjacent clamping members (171). The clamping members (171) are suitable for clamping the edge of the top of the first shell (14) and the edge of the bottom of the second shell (15), as well as clamping the edge of the bottom of the first shell (14) and the edge of the top of the support seat (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 among the plurality of clamping members (171) to fixedly connect the corresponding two clamping members (171).

Images