Rotary multi-sample variable temperature stage

Abstract

The utility model discloses a kind of rotary multi-sample variable temperature stage, including base, cover and variable temperature stage, base and cover cooperate to form airtight chamber, variable temperature stage is fixedly arranged in airtight chamber, still include sample support mechanism, sample changing mechanism and guide block, sample support mechanism is located in airtight chamber, sample support mechanism is provided with several sample dishes along circumference, part of sample changing mechanism is located in airtight chamber and is transmission connection with sample support mechanism, sample support mechanism has a rotation axis relative to base, sample changing mechanism is used to drive sample support mechanism to rotate around rotation axis, guide block is located below the rotation track of sample support mechanism, guide block has guide surface, when sample dish rotates to preset position with sample support mechanism, guide surface can receive and guide sample dish to variable temperature stage, multiple samples can be loaded, and sample changing does not need to open cover, airtight chamber environment keeps stable.

Description

Technical Field

[0001] This utility model relates to the field of variable temperature stage technology, and in particular to a rotary multi-sample variable temperature stage. Background Technology

[0002] A high-low temperature variable temperature stage is a device that provides a target temperature environment for experimental samples, enabling performance testing under the target temperature conditions. Most existing high-low temperature variable temperature stages have a top-opening design. Inside the stage is a well-sealed chamber containing a sample stage for placing the sample. The sample stage can perform heating and cooling functions. During operation, the top cover of the stage must first be unscrewed or lifted to fully expose the sample stage to the external environment. Then, using tweezers or other tools, the sample is manually picked up and placed on the sample stage, ensuring full contact between the sample and the stage surface. To ensure that the temperature can be transferred to the sample, the chamber is sealed after the sample is placed (e.g., by tightening the top cover). If necessary, a specific gas can also be introduced into the chamber for testing. However, most existing variable temperature stages adopt a "single sample stage" design, which means that only one sample can be loaded and tested at a time. When it is necessary to change the sample, the experiment needs to be interrupted and the airtight chamber opened (e.g., by unscrewing the top cover), which disrupts the stable temperature and atmosphere environment inside the chamber. It is necessary to re-introduce gas to flush the chamber and wait for the temperature to recover. This not only wastes gas resources but may also affect the consistency of test data. Therefore, it is necessary to improve this design. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a rotary multi-sample temperature stage with a simple and reasonable structure and convenient operation. It can hold multiple samples. After one sample is tested, there is no need to open the cover. The sample support mechanism is driven to rotate by the sample changing mechanism, which drives the next sample dish to move to the stage through the guide surface to achieve the sample changing function. The entire process does not require opening the cover, and the temperature and atmosphere in the airtight chamber remain stable.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: This utility model discloses a rotary multi-sample variable-temperature stage, comprising a base, a cover plate, and a variable-temperature stage. The base and cover plate cooperate to form an airtight chamber, and the variable-temperature stage is fixedly disposed within the airtight chamber. It also includes a sample support mechanism, a sample changing mechanism, and a guide block. The sample support mechanism is located within the airtight chamber and has several sample dishes arranged circumferentially thereon. A portion of the sample changing mechanism is located within the airtight chamber and is drively connected to the sample support mechanism. The sample support mechanism has a rotation axis relative to the base, and the sample changing mechanism drives the sample support mechanism to rotate around the rotation axis. The guide block is located below the rotation trajectory of the sample support mechanism and has a guide surface. When the sample dish rotates with the sample support mechanism to a preset position, the guide surface can receive and guide the sample dish onto the variable-temperature stage.

[0005] Furthermore, the plane on which the sample dish is placed on the variable-temperature stage is defined as the loading surface, the end of the guide surface away from the variable-temperature stage is defined as the starting end, and the end of the guide surface close to the variable-temperature stage is defined as the ending end. The height of the guide surface gradually increases from the starting end to the ending end, and the height of the ending end matches the height of the loading surface.

[0006] Furthermore, the guide surface is curved.

[0007] Furthermore, the sample dish has a bottom surface that can contact the loading surface. When the sample dish is not rotated onto the loading surface, the bottom surface is lower than the loading surface.

[0008] Furthermore, the sample support mechanism includes a gear sample tray, which has a plurality of sample dish holes along the circumferential direction. The sample dish is correspondingly matched with the sample dish holes and is placed inside the sample dish holes.

[0009] Furthermore, the sample changing mechanism includes a handle having a first part and a second part, the first part being located inside the airtight chamber and the second part being located outside the cover plate, the first part having a gear portion that meshes with the gear sample tray.

[0010] Furthermore, a viewing window is provided on the cover plate, and the viewing window is located above the variable temperature stage.

[0011] Furthermore, a first sealing element is provided between the base and the cover plate.

[0012] Furthermore, an atmosphere connector is provided on the base, and the atmosphere connector is connected to the airtight chamber.

[0013] Furthermore, a temperature-changing module is provided on the base, and the temperature-changing module is connected in conjunction with the temperature-changing stage.

[0014] The beneficial effects of this utility model are as follows: The rotary multi-sample variable temperature stage of this utility model includes a sample support mechanism, a sample changing mechanism, and a guide block. The sample support mechanism is provided with several sample dishes along the circumference. Unlike traditional variable temperature stages that can only hold one sample at a time, this utility model can load multiple samples at once. The sample changing mechanism is located in an airtight chamber and is connected to the sample support mechanism for transmission. The sample support mechanism has a rotation axis relative to the base. The sample changing mechanism is used to drive the sample support mechanism to rotate around the rotation axis. The guide block is located below the rotation trajectory of the sample support mechanism. The guide block has a guiding surface. When the sample dish rotates with the sample support mechanism to a preset position, the guiding surface can receive and guide the sample dish to the variable temperature stage.

[0015] Once a sample test is completed, there is no need to open the cover. The sample support mechanism is driven to rotate by the sample changing mechanism, which in turn drives the next sample dish to be guided to the variable temperature stage through the guide surface to achieve the sample changing function. The entire process does not require opening the cover. The temperature and atmosphere in the airtight chamber remain stable, ensuring that all samples are tested under the same conditions, thus improving data reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is a cross-sectional schematic diagram of the present invention; Figure 4 This is a partially enlarged structural diagram of the internal structure of this utility model.

[0017] Figures 1-4 middle: 1. Base; 11. Airtight chamber; 12. Tighten screws by hand; 13. Atmosphere connector; 14. Variable temperature module; 2. Cover plate; 21. Viewing window; 211. Viewing window retaining ring; 212. Viewing window glass; 213. Viewing window gasket; 3. Variable temperature stage; 31. Load-bearing surface; 4. Gear sample tray; 41. Sample dish well; 42. Sample dish; 421. Bottom of the dish; 5. Handle; 51. Part One; 511. Gear Section; 52. Part Two; 53. Bearings; 6. Guide block; 61. Guiding surface; 7. First sealing element; 8. Decorative panels. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figures 1-4 The rotary multi-sample variable-temperature stage shown includes a base 1, a cover plate 2, and a variable-temperature stage 3. The base 1 and cover plate 2 cooperate to form an airtight chamber 11. The variable-temperature stage 3 is fixedly installed inside the airtight chamber 11. Preferably, the base 1 and cover plate 2 are fixedly connected by hand-tightening screws 12, which eliminates the need for additional tools and facilitates easy assembly and disassembly. In this embodiment, an atmosphere connector 13 is provided on the base 1, which communicates with the airtight chamber 11. A protective gas (such as nitrogen or argon) can be introduced through the atmosphere connector 13 to establish a stable test atmosphere, ensuring that the environment inside the airtight chamber 11 is not affected by external interference. Preferably, there are two atmosphere connectors 13, one for gas inlet and the other for gas outlet, to establish the required test environment.

[0020] Preferably, in this embodiment, a temperature-changing module 14 is provided on the base 1. The temperature-changing module 14 is connected in cooperation with the temperature-changing stage 3. The temperature-changing module 14 is used to control the temperature-changing stage 3 to reach the target temperature, so as to provide a high and low temperature testing environment for the sample.

[0021] refer to Figure 2 Preferably, in this embodiment, a decorative panel 8 is also provided inside the base 1 to prevent the internal components of the base 1 from being directly exposed, making it more aesthetically pleasing.

[0022] The variable temperature module 14 may include a heating actuator, a cooling actuator, and a temperature sensor. The temperature sensor is used to receive temperature. The variable temperature module 14 described in this utility model is prior art, and its structure and working principle will not be described in detail here.

[0023] This utility model also includes a sample support mechanism, a sample changing mechanism, and a guide block 6. The sample support mechanism is located inside the airtight chamber 11 and has several sample dishes 42 arranged circumferentially. Unlike traditional variable temperature stages that can only hold one sample at a time, this utility model can load multiple samples at once. Part of the sample changing mechanism is located inside the airtight chamber 11 and is connected to the sample support mechanism via a transmission connection. The sample support mechanism has a rotation axis relative to the base 1. The sample changing mechanism is used to drive the sample support mechanism to rotate around the rotation axis. The guide block 6 is located below the rotation trajectory of the sample support mechanism. The guide block 6 has a guide surface 61. When the sample dish 42 rotates with the sample support mechanism to a preset position, the guide surface 61 can receive and guide the sample dish 42 onto the variable temperature stage 3.

[0024] Once a sample test is completed, there is no need to open the cover plate 2. The sample support mechanism is driven to rotate by the sample changing mechanism, which drives the next sample dish 42 to be guided to the variable temperature stage 3 through the guide surface 61 to achieve the sample changing function. The entire process does not require opening the cover plate 2. The temperature and atmosphere environment in the airtight chamber 11 remain stable, realizing a continuous process of "test-switching-retesting". This solves the problems of gas waste and temperature fluctuation caused by the traditional "open chamber sample changing" and ensures that all samples are tested under the same conditions, thereby improving data reliability.

[0025] Preferably, in this embodiment, the plane on which the sample dish 42 is placed on the variable-temperature stage 3 is defined as the loading surface 31, the end of the guide surface 61 away from the variable-temperature stage 3 is defined as the starting end, and the end of the guide surface 61 close to the variable-temperature stage 3 is defined as the ending end. The height of the guide surface 61 gradually increases from the starting end to the ending end, and the height of the ending end matches the height of the loading surface 31. Preferably, the guide surface 61 is arc-shaped, and the height of the ending end is flush with the height of the loading surface 31. When the gear sample tray 4 rotates, the sample dish 42 smoothly transitions along the guide surface 61 onto the loading surface 31 of the variable-temperature stage 3.

[0026] Preferably, in this embodiment, the sample dish 42 has a bottom surface 421 that can contact the carrier surface 31. When the sample dish 42 is not rotated onto the carrier surface 31, the bottom surface 421 is lower than the carrier surface 31. The arc-shaped guide surface 61 guides the sample dish 42 from the state where the bottom surface 421 is lower than the carrier surface 31 to the state where it is in contact with the carrier surface 31.

[0027] Preferably, in this embodiment, the sample support mechanism includes a gear sample tray 4. In this embodiment, the rotation axis is located at the center of the gear sample tray 4. The gear sample tray 4 is provided with a plurality of sample dish holes 41 along the circumferential direction. The sample dishes 42 are correspondingly engaged with the sample dish holes 41. The sample dishes 42 have a limiting part, which is engaged with the sample dish holes 41 to limit the movement of the sample dishes 42. The sample dishes 42 are placed in the sample dish holes 41. Multiple sample dishes 42 can be pre-placed in the sample dish holes 41 to achieve multiple samples being loaded at once.

[0028] In this embodiment, see Figure 2 The sample dish has 8 holes 41. Of course, in other embodiments, the sample dish may have 4 or 6 holes 41, etc.

[0029] Preferably, in this embodiment, the sample changing mechanism includes a handle 5, which has a first part 51 and a second part 52. The first part 51 is located inside the airtight chamber 11, and the second part 52 is located outside the cover plate 2. (See reference...) Figure 4 The first part 51 has a gear part 511, which meshes with the gear sample tray 4. After a sample is tested, the second part 52 can be rotated to drive the next sample dish 42 to move to the stage via the guide surface 61. The entire process does not require opening the cover plate 2. The temperature and atmosphere in the airtight chamber 11 remain stable, realizing a continuous process of "test-switching-retest".

[0030] Preferably, in this embodiment, the cover plate 2 is provided with a viewing window 21, which is located above the variable temperature stage 3, facilitating the operator to observe the position and status of the sample in real time. The viewing window 21 includes a viewing window ring 211, a viewing window glass 212, and a viewing window gasket 213. The viewing window ring 211 is pressed onto the viewing window glass 212, and the viewing window gasket 213 is pressed between the cover plate 2 and the viewing window glass 212. The viewing window gasket 213 effectively provides cushioning and sealing.

[0031] Preferably, in this embodiment, a first sealing element 7 is provided between the base 1 and the cover plate 2. In this embodiment, the first sealing element 7 is a first sealing ring, and the base 1 is provided with a device for installing the first sealing ring to improve the sealing performance.

[0032] Preferably, in this embodiment, a bearing 53 is provided between the handle 5 and the cover plate 2 to facilitate smoother rotation of the handle 5. A second sealing element (not shown in the figure) is provided below the bearing 53. In this embodiment, the second sealing element is a second sealing ring. By providing the second sealing ring, the sealing function can be effectively achieved to prevent fluid leakage.

[0033] The working principle of this invention is as follows: Before the experiment begins, first open the cover plate 2 and place multiple sample dishes 42 to be tested into the corresponding sample dish holes 41 on the gear sample tray 4, ensuring that each sample dish 42 is placed securely. After placement, close the cover plate 2 again to seal the entire airtight chamber 11. Then, introduce the required protective gas, such as nitrogen or argon, into the airtight chamber 11 through the atmosphere connector 13 to eliminate air interference and maintain a stable experimental atmosphere.

[0034] After the experiment is started, the temperature-changing module 14 adjusts the temperature of the temperature-changing stage 3 according to the preset program to reach the target temperature. Once the first sample has been tested, the operator does not need to interrupt the experiment or disrupt the atmosphere inside the chamber; they simply turn the handle 5 to drive the gear sample tray 4 to rotate. During rotation, the next sample dish 42 moves along the guide surface 61 onto the temperature-changing stage 3 and enters the observation area. Throughout the entire test, the temperature and atmosphere inside the airtight chamber 11 remain stable, greatly improving the reliability and consistency of the experimental data.

[0035] After all experiments are completed, wait for the temperature of the variable-temperature stage 3 to gradually decrease to a safe range (e.g., close to room temperature). At this point, gas replacement can be performed through the atmosphere connector 13 as needed to remove residual atmosphere. Finally, open the chamber cover 2 and remove the sample dishes 42 one by one to safely and conveniently unload all the tested samples.

[0036] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A rotary multi-sample variable temperature stage, comprising a base (1), a cover plate (2), and a variable temperature stage (3), wherein the base (1) and the cover plate (2) cooperate to form an airtight chamber (11), and the variable temperature stage (3) is fixedly disposed within the airtight chamber (11), characterized in that: It also includes a sample support mechanism, a sample changing mechanism, and a guide block (6). The sample support mechanism is located in the airtight chamber (11). The sample support mechanism is provided with a number of sample dishes (42) along the circumferential direction. Part of the sample changing mechanism is located in the airtight chamber (11) and is connected to the sample support mechanism in a transmission manner. The sample support mechanism has a rotation axis relative to the base (1). The sample changing mechanism is used to drive the sample support mechanism to rotate around the rotation axis. The guide block (6) is located below the rotation trajectory of the sample support mechanism. The guide block (6) has a guide surface (61). When the sample dish (42) rotates with the sample support mechanism to a preset position, the guide surface (61) can receive and guide the sample dish (42) onto the variable temperature stage (3).

2. The rotary multi-sample temperature stage according to claim 1, characterized in that: The plane on which the sample dish (42) is placed on the variable temperature stage (3) is defined as the loading surface (31). The end of the guide surface (61) away from the variable temperature stage (3) is defined as the starting end, and the end of the guide surface (61) close to the variable temperature stage (3) is defined as the ending end. The height of the guide surface (61) gradually increases from the starting end to the ending end, and the height of the ending end matches the height of the loading surface (31).

3. The rotary multi-sample temperature-changing stage according to claim 2, characterized in that: The guide surface (61) is curved.

4. A rotary multi-sample temperature stage according to claim 2, characterized in that: The sample dish (42) has a bottom surface (421) that can contact the loading surface (31). When the sample dish (42) is not rotated onto the loading surface (31), the bottom surface (421) is lower than the loading surface (31).

5. A rotary multi-sample temperature-changing stage according to claim 1, characterized in that: The sample support mechanism includes a gear sample tray (4), which has a plurality of sample dish holes (41) arranged along the circumferential direction. The sample dish (42) is correspondingly matched with the sample dish holes (41) and is placed inside the sample dish holes (41).

6. A rotary multi-sample temperature-changing stage according to claim 5, characterized in that: The sample changing mechanism includes a handle (5), which has a first part (51) and a second part (52). The first part (51) is located inside the airtight chamber (11), and the second part (52) is located outside the cover plate (2). The first part (51) has a gear part (511) that meshes with the gear sample tray (4).

7. A rotary multi-sample temperature stage according to claim 1, characterized in that: The cover plate (2) is provided with a viewing window (21), which is located above the temperature-controlled stage (3).

8. A rotary multi-sample temperature stage according to claim 1, characterized in that: A first sealing element (7) is provided between the base (1) and the cover plate (2).

9. A rotary multi-sample temperature stage according to claim 1, characterized in that: An atmosphere connector (13) is provided on the base (1), and the atmosphere connector (13) is connected to the airtight chamber (11).

10. A rotary multi-sample temperature stage according to claim 1, characterized in that: A temperature-changing module (14) is provided on the base (1), and the temperature-changing module (14) is connected to the temperature-changing stage (3).

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