Soaking block and temperature metering furnace with same

Abstract

The utility model discloses a soaking block and a temperature metering furnace with the same. A soaking block belongs to the technical field of temperature calibration and comprises an outer cylinder and an inner core, the outer cylinder is provided with a mounting hole extending in the axial direction of the outer cylinder, a first containing groove is formed in the inner wall of the mounting hole, the inner core is rotatably arranged in the mounting hole around the axis of the inner core, and a second containing groove is formed in the outer wall, facing the outer cylinder, of the inner core. The first containing groove and the second containing groove can clamp to-be-measured thermometers with different diameters, the universality of the soaking block can be improved, when the inner core rotates to the clamping position, the first containing groove and the second containing groove clamp the to-be-measured thermometers together, the heat transfer effect can be improved, the metering error of the to-be-measured thermometers can be reduced, and the metering efficiency is improved. Therefore, the calibration precision of the to-be-measured thermometer is improved.

Description

Technical Field

[0001] This utility model relates to the field of temperature calibration technology, and more specifically, to a heat spreader and a temperature metering furnace having the same. Background Technology

[0002] In industrial production and laboratory applications, temperature measurement furnaces are the core equipment for calibrating thermometers, and their calibration accuracy directly affects the reliability of thermometers in actual use.

[0003] In related technologies, temperature measurement furnaces include a heat exchanger block with test holes for mounting thermometers. The inner diameter of the test hole needs to be compatible with the diameter of the thermometer, resulting in poor versatility of the heat exchanger block. At the same time, to ensure that the thermometer can be easily inserted into and removed from the test hole, the diameter of the test hole is usually slightly larger than the diameter of the thermometer. This means that the thermometer and the test hole can only fit together on one side at most. The air in the gap between the thermometer and the test hole will block the heat transfer between the heat exchanger block and the thermometer, resulting in measurement errors and reducing calibration accuracy. Utility Model Content

[0004] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, this invention proposes a heat spreader, which can improve the versatility of the heat spreader and enhance the calibration accuracy of the thermometer under test.

[0005] This utility model also proposes a temperature metering furnace having the above-mentioned heat spreader.

[0006] A heat spreader block according to an embodiment of the present invention includes: an outer cylinder and an inner core. The outer cylinder has a mounting hole extending along its axial direction, and the inner wall of the mounting hole forms a first receiving groove extending along the axial direction of the outer cylinder. The inner core is rotatably disposed in the mounting hole about its axis. The inner core has a first assembly hole suitable for mounting a standard thermometer, and the inner core has a second receiving groove formed on the outer wall of the outer cylinder facing the outer cylinder. The second receiving groove extends along the axial direction of the inner core. The inner core has an assembly position and a clamping position. When the inner core rotates to the assembly position, the opening of the first receiving groove and the opening of the second receiving groove are directly opposite each other, and the first receiving groove and the second receiving groove together define a second assembly hole suitable for accommodating a thermometer to be measured. When the inner core rotates to the clamping position, the openings of the first receiving groove and the second receiving groove are partially offset, so that the first receiving groove and the second receiving groove are suitable for jointly clamping the thermometer to be measured.

[0007] According to the embodiment of the present invention, the heat spreader has an inner core rotatably disposed in the mounting hole of the outer cylinder around its axis. By rotating the inner core, the first receiving groove of the mounting hole and the second receiving groove of the inner core can clamp thermometers of different diameters, which is beneficial to improving the versatility of the heat spreader. When the inner core is rotated to the clamping position, the first receiving groove and the second receiving groove together clamp the thermometer, which can improve the heat transfer effect, reduce the measurement error of the thermometer, and thus improve the calibration accuracy of the thermometer.

[0008] According to some embodiments of the present invention, the heat dissipation block further includes a locking member, which is installed on the outer cylinder and can selectively lock into the inner core.

[0009] According to some embodiments of the present invention, the axis of the outer cylinder is collinear with the axis of the inner core, and the axial dimension of the outer cylinder is the same as the axial dimension of the inner core.

[0010] According to some embodiments of the present invention, the heat spreader further includes: a top cover, the top cover being located on the axial outer side of the outer cylinder, the top cover being fixedly connected to the inner core, the top cover having a first top cover hole and a second top cover hole, the first top cover hole communicating with the first assembly hole, and the second top cover hole communicating with the second assembly hole.

[0011] According to some embodiments of this utility model, the outer diameter of the top cover is larger than the outer diameter of the outer cylinder.

[0012] According to some embodiments of the present invention, the top cover includes: a connecting post and a connecting ring. The connecting post is fixedly connected to the inner core and has a first top cover hole and a second top cover hole. The connecting ring is fixedly connected to the end of the connecting post away from the inner core. The outer diameter of the connecting ring is larger than the outer diameter of the outer cylinder and the outer diameter of the connecting post. The connecting ring and the connecting post together define a top cover groove. The first top cover hole and the second top cover hole are located at the bottom of the top cover groove. The connecting ring has a wiring groove that communicates with the top cover groove.

[0013] According to some embodiments of the present invention, the heat spreader further includes: a bottom cover, which is fixedly connected to the end of the inner core away from the top cover, and the bottom cover abuts against the axial end face of the outer cylinder opposite to it.

[0014] According to some embodiments of this utility model, the outer cylinder, the inner core, the top cover, and the bottom cover are all made of copper.

[0015] According to some embodiments of the present invention, there are multiple first receiving slots and multiple second receiving slots, and the multiple first receiving slots and multiple second receiving slots correspond one-to-one.

[0016] According to another embodiment of the present invention, a temperature metering furnace includes the above-described heat spreader.

[0017] According to the embodiment of the present invention, the inner core of the heat exchange block of the temperature measuring furnace is rotatably disposed in the mounting hole of the outer cylinder around its axis. By rotating the inner core, the first receiving groove of the mounting hole and the second receiving groove of the inner core can clamp thermometers of different diameters, which is beneficial to improving the versatility of the temperature measuring furnace. When the inner core is rotated to the clamping position, the first receiving groove and the second receiving groove together clamp the thermometer, which can improve the heat transfer effect, reduce the measurement error of the thermometer, and thus improve the calibration accuracy of the thermometer.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is an exploded view of the heat spreader according to an embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of the heat dissipation block when the inner core is in the assembly position according to an embodiment of the present utility model;

[0021] Figure 3 This is a cross-sectional view of the heat dissipation block when the inner core is in the clamping position according to an embodiment of the present utility model;

[0022] Figure 4 This is a cross-sectional view of the heat exchange block according to an embodiment of the present utility model;

[0023] Figure 5 This is a side view of the heat exchange block when the inner core is in the assembly position according to an embodiment of the present utility model;

[0024] Figure 6 This is a side view of the heat dissipation block when the inner core is in the clamping position according to an embodiment of the present utility model;

[0025] Figure 7 The three-dimensional heat spreader according to the embodiment of this utility model Figure 1 ;

[0026] Figure 8 The three-dimensional heat spreader according to the embodiment of this utility model Figure 2 .

[0027] Figure label:

[0028] Outer cylinder 1; mounting hole 11; first receiving groove 111; locking hole 12;

[0029] Inner core 2; First assembly hole 21; Second receiving groove 22; First connecting hole 23; Third connecting hole 24;

[0030] Locking component 3;

[0031] Top cover 4; connecting post 41; first top cover hole 411; second top cover hole 412; connecting ring 42; wiring groove 421; top cover groove 43; second connecting hole 44;

[0032] Bottom cover 5; Fourth connecting hole 51;

[0033] Second assembly hole 6;

[0034] Heat spreader 10; thermometer to be tested 20. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The following is combined Figures 1-8 A detailed description is given of the heat spreader 10 and the temperature metering furnace having the heat spreader 10 according to an embodiment of the present invention.

[0040] Reference Figures 1-3 As shown, the heat spreader 10 according to an embodiment of the present invention includes: an outer cylinder 1 and an inner core 2. The outer cylinder 1 has a mounting hole 11 extending along its axial direction. A first receiving groove 111 is formed on the inner wall of the mounting hole 11. The first receiving groove 111 extends along the axial direction of the outer cylinder 1. The inner core 2 is rotatably disposed in the mounting hole 11 about its axis. The inner core 2 has a first assembly hole 21 suitable for mounting a standard thermometer. A second receiving groove 22 is formed on the outer wall of the inner core 2 facing the outer cylinder 1. The second receiving groove 22 extends along the axial direction of the inner core 2.

[0041] The inner core 2 has an assembly position and a clamping position. When the inner core 2 rotates to the assembly position, refer to... Figure 2 As shown, the opening of the first receiving groove 111 is directly opposite the opening of the second receiving groove 22. The first receiving groove 111 and the second receiving groove 22 together define a second mounting hole 6 suitable for accommodating the thermometer 20 to be measured. When the inner core 2 is rotated to the clamping position, refer to Figure 3 As shown, the opening of the first receiving groove 111 is partially offset from the opening of the second receiving groove 22, so that the first receiving groove 111 and the second receiving groove 22 are suitable for jointly clamping the thermometer 20 to be measured.

[0042] It should be noted that the heat spreader 10 can be used in a temperature measurement furnace, which can be used to calibrate the thermometer 20 to be tested. Specifically, when calibrating the thermometer 20, a standard thermometer can be installed in the first mounting hole 21, and the thermometer 20 to be tested can be installed in the second mounting hole 6. The temperature measurement furnace has a temperature regulating device, which can blow hot air into the heat spreader 10 to heat it or blow cold air into it to cool it. The standard thermometer measures the temperature of the heat spreader 10 in real time. When the temperature of the heat spreader 10 reaches the predetermined temperature, the deviation between the measured value of the thermometer 20 and the predetermined temperature is calculated. If the deviation is within the preset range, the measurement error of the thermometer 20 is small, and no adjustment is needed. If the deviation exceeds the preset range, the measurement error of the thermometer 20 is large, and the thermometer 20 needs to be adjusted to bring the deviation within the preset range, ensuring that the thermometer 20 can provide reliable temperature measurement data during use.

[0043] It is understandable that when the inner core 2 is in the assembly position, refer to Figure 2As shown, the opening of the first receiving groove 111 is directly opposite the opening of the second receiving groove 22. At this time, the second assembly hole 6 defined by the first receiving groove 111 and the second receiving groove 22 is a circular hole with a large diameter, so that the thermometer to be measured 20 can be smoothly inserted into the second assembly hole 6.

[0044] After the thermometer 20 to be measured is inserted into the second mounting hole 6, rotate the inner core 2 to the clamping position, referring to... Figure 3 As shown, the first receiving groove 111 and the second receiving groove 22 together clamp the thermometer 20 to be measured, thereby achieving reliable fixation of the thermometer 20. The inner walls of both the first receiving groove 111 and the second receiving groove 22 are in direct contact with the thermometer 20 to be measured, forming a clamping effect on both sides. This increases the contact area between the thermometer 20 and the heat spreader 10, which is beneficial to improving the heat conduction efficiency and the heat transfer effect between the heat spreader 10 and the thermometer 20 to be measured. This reduces the temperature difference between the thermometer 20 and the heat spreader 10, which helps to reduce the measurement error of the thermometer 20 and thus improves the calibration accuracy of the thermometer 20.

[0045] In this embodiment, by rotating the inner core 2, the first receiving groove 111 and the second receiving groove 22 can clamp thermometers 20 of different diameters, which helps to improve the versatility of the heat spreader 10, avoids the need to customize multiple different heat spreaders 10 to adapt to thermometers 20 of different diameters, and helps to save costs.

[0046] According to the embodiment of the present invention, the heat spreader 10 has an inner core 2 rotatably disposed in the mounting hole 11 of the outer cylinder 1 around its axis. By rotating the inner core 2, the first receiving groove 111 of the mounting hole 11 and the second receiving groove 22 of the inner core 2 can clamp thermometers 20 of different diameters, which is beneficial to improving the versatility of the heat spreader 10. When the inner core 2 is rotated to the clamping position, the first receiving groove 111 and the second receiving groove 22 jointly clamp the thermometer 20, which can improve the heat transfer effect, reduce the measurement error of the thermometer 20, and thus improve the calibration accuracy of the thermometer 20.

[0047] In some embodiments of this utility model, reference is made to Figure 2 and Figure 3 As shown, the heat spreader 10 also includes a locking element 3, which is installed on the outer cylinder 1 and can be selectively locked to the inner core 2 to facilitate the installation and removal of the thermometer 20 to be measured.

[0048] Understandably, before inserting the thermometer 20 to be tested into the second mounting hole 6, the locking engagement between the locking member 3 and the inner core 2 is released, allowing the inner core 2 to rotate relative to the outer cylinder 1. The inner core 2 can be rotated to the mounting position so that the second mounting hole 6, defined by the first receiving groove 111 and the second receiving groove 22, is easily installed. After the thermometer 20 is inserted into the second mounting hole 6, the inner core 2 is rotated to the clamping position so that the first receiving groove 111 and the second receiving groove 22 are suitable for jointly clamping the thermometer 20, thus fixing the thermometer 20. Then, the locking member 3 is locked into the inner core 2 so that the inner core 2 is fixed in the mounting hole 11, maintaining the relative position of the inner core 2 and the outer cylinder 1. This helps the first receiving groove 111 and the second receiving groove 22 to stably and reliably clamp the thermometer 20.

[0049] Once calibration is complete, the locking mechanism between the locking member 3 and the inner core 2 can be released. By rotating the inner core 2, at least one of the first receiving groove 111 and the second receiving groove 22 can be separated from the thermometer 20 to be measured, so that the thermometer 20 can be removed.

[0050] In some embodiments, refer to Figure 4 As shown, the outer cylinder 1 has a locking hole 12 extending in its radial direction. The locking member 3 can be a fastening screw, and the locking hole 12 can be a threaded hole. The locking member 3 passes through the locking hole 12 and is threadedly engaged with the locking hole 12. By rotating the locking member 3, the locking member 3 can move in the radial direction of the outer cylinder 1. When the locking member 3 moves towards the inner core 2, the locking member 3 can abut against the outer wall of the outer cylinder 1, so that the inner core 2 is fixed in the mounting hole 11, realizing the locking engagement between the locking member 3 and the inner core 2. When the locking member 3 moves away from the inner core 2, the locking member 3 separates from the inner core 2, so that the locking engagement between the locking member 3 and the inner core 2 is released.

[0051] The number of locking parts 3 and locking holes 12 can be multiple. Multiple locking parts 3 correspond one-to-one with multiple locking holes 12. Multiple locking parts 3 can form multiple sets of locking fits with the inner core 2, which is conducive to the inner core 2 being firmly and reliably fixed in the mounting hole 11.

[0052] In other embodiments not shown in the figures, the locking member 3 may be a pin. In the circumferential direction of the inner core 2, the inner core 2 has a plurality of locking grooves spaced apart on the outer wall of the outer cylinder 1. The outer cylinder 1 has a insertion hole extending in its radial direction. The locking member 3 can pass through the insertion hole and be inserted into the locking groove corresponding to the insertion hole to achieve a locking engagement between the locking member 3 and the inner core 2. When it is necessary to release the locking engagement between the locking member 3 and the inner core 2, the locking member 3 can be pulled out from the locking groove to separate the locking member 3 from the inner core 2, thereby releasing the locking engagement between the locking member 3 and the inner core 2.

[0053] In some embodiments of this utility model, reference is made to Figure 4 As shown, the axis of the outer cylinder 1 is collinear with the axis of the inner core 2, which is conducive to uniform heat transfer between the outer cylinder 1 and the inner core 2, and can improve the temperature uniformity of the heat spreader 10. In addition, the axial dimension of the outer cylinder 1 is the same as the axial dimension of the inner core 2, which helps to ensure the heat transfer effect between the outer cylinder 1 and the inner core 2, and ensures the manufacturing cost of the heat spreader 10.

[0054] It is understandable that if the axial dimension of the outer cylinder 1 is larger than the axial dimension of the inner core 2, a cavity will be formed between the outer cylinder 1 and the inner core 2 in the axial direction. The air in the cavity can block the heat transfer between the outer cylinder 1 and the inner core 2, which may lead to uneven temperature of the heat spreader 10. If the axial dimension of the outer cylinder 1 is smaller than the axial dimension of the inner core 2, the redundancy of the inner core 2 is greater, which increases the manufacturing cost of the heat spreader 10. In this embodiment, the axial dimension of the outer cylinder 1 is the same as the axial dimension of the inner core 2, which is beneficial to ensure the heat transfer effect between the outer cylinder 1 and the inner core 2 and to ensure the manufacturing cost of the heat spreader 10.

[0055] In some embodiments of this utility model, reference is made to Figures 4-8 As shown, the heat spreader 10 also includes a top cover 4, which is located on the axial outer side of the outer cylinder 1. The top cover 4 is fixedly connected to the inner core 2. The top cover 4 has a first top cover hole 411 and a second top cover hole 412. The first top cover hole 411 communicates with the first mounting hole 21, and the second top cover hole 412 communicates with the second mounting hole 6. The top cover 4 can block at least part of the mounting hole 11, which can reduce the risk of air blown out by the temperature regulating device entering the mounting hole 11 and directly heating or cooling the thermometer 20 under test. It can also reduce the temperature difference between the thermometer 20 under test and the heat spreader 10, which is beneficial to reducing the measurement error of the thermometer 20 under test, thereby improving the calibration accuracy of the thermometer 20 under test.

[0056] The first top cover hole 411 is adapted to avoid a standard thermometer so that the standard thermometer can be installed into the first mounting hole 21, and the second top cover hole 412 is adapted to avoid a thermometer 20 to be tested so that the thermometer 20 to be tested can be installed into the second mounting hole 6.

[0057] In some embodiments, the top cover 4 and the inner core 2 are integrally formed, and the top cover 4 and the inner core 2 do not need to be connected by fasteners or welding. This helps to reduce the assembly steps of the top cover 4 and the inner core 2, thereby improving the production efficiency of the heat spreader 10. At the same time, it also helps to reduce the number of parts of the heat spreader 10 and reduce the production cost of the heat spreader 10.

[0058] In other embodiments, the top cover 4 and the inner core 2 are formed separately, which helps to reduce the manufacturing difficulty of the top cover 4 and the inner core 2. Referring to... Figure 4As shown, the axial end face of the inner core 2 has a first connecting hole 23, and the top cover 4 has a second connecting hole 44 corresponding to the first connecting hole 23. The first connecting hole 23 can be a threaded hole, and the second connecting hole 44 can be a countersunk hole. A screw can be passed through the second connecting hole 44 and threadedly connected to the first connecting hole 23 to achieve a fixed connection between the top cover 4 and the inner core 2. The connection method between the top cover 4 and the inner core 2 is simple and facilitates the assembly of the top cover 4 and the inner core 2.

[0059] In some embodiments of this utility model, the outer diameter of the top cover 4 is larger than the outer diameter of the outer cylinder 1. When the inner core 2 is inserted into the mounting hole 11 of the outer cylinder 1 or pulled out of the mounting hole 11, the part of the top cover 4 that protrudes relative to the outer cylinder 1 can provide a gripping position, so as to facilitate the insertion of the inner core 2 into the mounting hole 11 or the pulling out of the mounting hole 11, thereby improving the convenience of installing and removing the inner core 2.

[0060] In some embodiments of this utility model, reference is made to Figures 4-8 As shown, the top cover 4 includes a connecting post 41 and a connecting ring 42. The connecting post 41 is fixedly connected to the inner core 2. The connecting post 41 has a first top cover hole 411 and a second top cover hole 412. The connecting ring 42 is fixedly connected to the end of the connecting post 41 away from the inner core 2. The outer diameter of the connecting ring 42 is larger than the outer diameter of the outer cylinder 1 and the connecting post 41. The connecting ring 42 and the connecting post 41 together define the top cover groove 43. The first top cover hole 411 and the second top cover hole 412 are located at the bottom of the top cover groove 43. The connecting ring 42 has a wiring groove 421, which communicates with the top cover groove 43.

[0061] It should be noted that both the standard thermometer and the thermometer under test 20 can have an insulating ring. The insulating ring of the standard thermometer can block the first top cover hole 411, reducing the risk that the air blown out by the temperature regulating device will enter the first assembly hole 21 through the first top cover hole 411 and heat or cool the probe of the standard thermometer. The insulating ring of the thermometer under test 20 can block the second top cover hole 412, reducing the risk that the air blown out by the temperature regulating device will enter the second assembly hole 6 through the second top cover hole 412 and heat or cool the probe of the thermometer under test 20. This is beneficial for the standard thermometer and the thermometer under test 20 to measure temperature in the same temperature environment, which can effectively reduce the measurement error of the standard thermometer and the thermometer under test 20, thereby improving the calibration accuracy of the thermometer under test 20.

[0062] Understandably, the connecting ring 42 and the connecting post 41 together define the top cover groove 43, which can accommodate the insulation ring of the standard thermometer and the insulation ring of the thermometer to be measured 20. The wiring groove 421 is connected to the top cover groove 43 and is suitable for leading out the wiring harness of the standard thermometer and the thermometer to be measured 20 so as to connect the wiring harness of the standard thermometer and the thermometer to be measured to the temperature acquisition device used to acquire temperature signals.

[0063] In some embodiments of this utility model, reference is made to Figure 4 , Figure 7 and Figure 8 As shown, the heat spreader 10 also includes a bottom cover 5, which is fixedly connected to the end of the inner core 2 away from the top cover 4, and the bottom cover 5 abuts against the axial end face of the outer cylinder 1. The bottom cover 5 can block the first mounting hole 21 of the inner core 2 to reduce the risk of air blown out by the temperature regulating device entering the first mounting hole 21 and directly heating or cooling the probe of the standard thermometer. The bottom cover 5 can also block the second mounting hole 6 defined by the inner core 2 and the outer cylinder 1 to reduce the risk of air blown out by the temperature regulating device entering the second mounting hole 6 and directly heating or cooling the probe of the thermometer 20 to be tested. Furthermore, the bottom cover 5 can transfer heat to both the inner core 2 and the top cover 4 at the same time, which can improve the temperature uniformity of the heat spreader 10. This is beneficial for the standard thermometer and the thermometer 20 to measure temperature in the same temperature environment, and can effectively reduce the measurement error of the standard thermometer and the thermometer 20 to be tested, thereby improving the calibration accuracy of the thermometer 20 to be tested.

[0064] Reference Figure 4 As shown, the bottom cover 5 and the top cover 4 are fixedly connected to the two ends of the inner core 2 in the axial direction. The bottom cover 5 and the top cover 4 abut against the end faces of the two ends of the outer cylinder 1 in the axial direction. The bottom cover 5 and the top cover 4 can jointly limit the inner core 2 in the axial direction. In the axial direction of the outer cylinder 1, the inner core 2 can be effectively prevented from moving relative to the outer cylinder 1, and the inner core 2 is prevented from coming out of the mounting hole 11.

[0065] Reference Figure 4 As shown, the inner core 2 has a third connecting hole 24 at the end away from the top cover 4, and the bottom cover 5 has a fourth connecting hole 51 corresponding to the third connecting hole 24. The third connecting hole 24 can be a threaded hole, and the fourth connecting hole 51 can be a countersunk hole. A screw can be passed through the fourth connecting hole 51 and threadedly connected to the third connecting hole 24 to achieve a fixed connection between the bottom cover 5 and the inner core 2. The connection method between the bottom cover 5 and the inner core 2 is simple and facilitates the assembly of the heat spreader block 10.

[0066] In some embodiments of this utility model, the outer cylinder 1, inner core 2, top cover 4, and bottom cover 5 are all made of copper. Copper has a high thermal conductivity, and heat can be quickly conducted to all parts of the outer cylinder 1, inner core 2, top cover 4, and bottom cover 5. This is beneficial for the uniform distribution of heat in the heat spreader 10, ensuring the uniformity of the temperature field of the heat spreader 10. This allows the thermometer under test 20 and the standard thermometer to be measured in the same temperature environment, which can reduce measurement errors and thus improve the calibration accuracy of the thermometer under test 20. Furthermore, the heat spreader 10 can quickly reach the predetermined temperature, which is beneficial for improving calibration efficiency.

[0067] In some embodiments of this utility model, there are multiple first receiving grooves 111 and multiple second receiving grooves 22. The multiple first receiving grooves 111 and multiple second receiving grooves 22 correspond one-to-one. The multiple first receiving grooves 111 and the multiple corresponding second receiving grooves 22 can define multiple second mounting holes 6. Each second mounting hole 6 can be used to install the thermometer to be tested 20, and multiple thermometers to be tested 20 can be calibrated at the same time, which can effectively improve the calibration efficiency.

[0068] In this embodiment, the outer diameter of the outer cylinder 1 is 25.3 mm, the diameter of the first mounting hole 21 of the inner core 2 is 3.6 mm, and the standard thermometer can be a short-branch temperature sensor with a diameter of 3.6 mm. Alternatively, a second-order platinum resistance temperature sensor can be used. The inner core 2 can rotate relative to the mounting hole 11 of the outer cylinder 1 around its axis. The heat spreader 10 is suitable for thermometers 20 with a diameter in the range of 2.5 mm to 8.1 mm. The thermometer 20 can be a short-branch temperature sensor. Specifically, the short-branch temperature sensor is a temperature sensor with a probe length of less than 90 mm, a large-diameter flange, and a large-size metal handle.

[0069] According to another embodiment of the present invention, a temperature metering furnace includes the heat spreader 10 described in the above embodiment.

[0070] According to the temperature measuring furnace of this utility model embodiment, the inner core 2 of the heat spreader 10 is rotatably disposed in the mounting hole 11 of the outer cylinder 1 around its axis. By rotating the inner core 2, the first receiving groove 111 of the mounting hole 11 and the second receiving groove 22 of the inner core 2 can clamp thermometers 20 of different diameters, which is beneficial to improving the versatility of the temperature measuring furnace. When the inner core 2 is rotated to the clamping position, the first receiving groove 111 and the second receiving groove 22 jointly clamp the thermometer 20, which can improve the heat transfer effect, reduce the measurement error of the thermometer 20, and thus improve the calibration accuracy of the thermometer 20.

[0071] In some embodiments of this utility model, the temperature measuring furnace is a dry well temperature measuring furnace, which is easy to carry and operate. The dry well temperature measuring furnace has high temperature control accuracy, reaching ±0.15℃, and good stability, reaching ±0.02℃. The dry well temperature measuring furnace can be widely used in pharmaceutical, food processing, chemical and other industries.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0073] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A heat spreader, characterized in that, include: The outer cylinder (1) has a mounting hole (11) extending along its axial direction, and the inner wall of the mounting hole (11) is formed with a first receiving groove (111) extending along the axial direction of the outer cylinder (1). The inner core (2) is rotatably disposed in the mounting hole (11) about its axis. The inner core (2) has a first mounting hole (21) suitable for mounting a standard thermometer. The inner core (2) has a second receiving groove (22) formed on the outer wall of the outer cylinder (1) facing the outer cylinder (1). The second receiving groove (22) extends along the axial direction of the inner core (2). The inner core (2) has an assembly position and a clamping position. When the inner core (2) is rotated to the assembly position, the opening of the first receiving groove (111) is directly opposite to the opening of the second receiving groove (22). The first receiving groove (111) and the second receiving groove (22) together define a second assembly hole (6) suitable for accommodating the thermometer (20) to be measured. When the inner core (2) rotates to the clamping position, the opening of the first receiving groove (111) is partially offset from the opening of the second receiving groove (22), so that the first receiving groove (111) and the second receiving groove (22) are suitable for jointly clamping the thermometer to be measured (20).

2. The heat spreader according to claim 1, characterized in that, The heat exchange block further includes a locking member (3), which is installed on the outer cylinder (1) and can be selectively locked to the inner core (2).

3. The heat spreader according to claim 2, characterized in that, The axis of the outer cylinder (1) is collinear with the axis of the inner core (2), and the axial dimension of the outer cylinder (1) is the same as the axial dimension of the inner core (2).

4. The heat spreader according to claim 3, characterized in that, The heat spreader also includes a top cover (4), which is located on the axial outside of the outer cylinder (1). The top cover (4) is fixedly connected to the inner core (2). The top cover (4) has a first top cover hole (411) and a second top cover hole (412). The first top cover hole (411) communicates with the first assembly hole (21), and the second top cover hole (412) communicates with the second assembly hole (6).

5. The heat spreader according to claim 4, characterized in that, The outer diameter of the top cover (4) is larger than the outer diameter of the outer cylinder (1).

6. The heat spreader according to claim 5, characterized in that, The top cover (4) includes: A connecting post (41) is fixedly connected to the inner core (2), and the connecting post (41) has a first top cover hole (411) and a second top cover hole (412); A connecting ring (42) is fixedly connected to the end of the connecting post (41) away from the inner core (2). The outer diameter of the connecting ring (42) is larger than the outer diameter of the outer cylinder (1) and the connecting post (41). The connecting ring (42) and the connecting post (41) together define a top cover groove (43). The first top cover hole (411) and the second top cover hole (412) are located at the bottom of the top cover groove (43). The connecting ring (42) has a wiring groove (421) that communicates with the top cover groove (43).

7. The heat spreader according to claim 4, characterized in that, The heat spreader also includes a bottom cover (5), which is fixedly connected to the end of the inner core (2) away from the top cover (4), and the bottom cover (5) abuts against the outer cylinder (1) and its opposite axial end face.

8. The heat spreader according to claim 7, characterized in that, The outer cylinder (1), the inner core (2), the top cover (4), and the bottom cover (5) are all made of copper.

9. The heat spreader block according to any one of claims 1-8, characterized in that, There are multiple first receiving slots (111) and multiple second receiving slots (22), and the multiple first receiving slots (111) and multiple second receiving slots (22) correspond one-to-one.

10. A temperature metering furnace, characterized in that, Includes the heat spreader according to any one of claims 1-9.

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