Glass bead elastic pressure contact temperature measurement heat source
By using glass bead press-contact temperature measurement heat source in the thermal performance test of radiator, the problems of insolid thermocouple wires and poor contact in the measurement point in the existing test methods are solved, and reliable positioning and efficient testing of the temperature measurement point are achieved, and the efficiency and reliability of the test are improved.
Patent Information
- Application Number
- CN202421229309.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing thermal performance testing methods of radiator are not firm, easily loosening and falling off, resulting in poor contact between the test points and large errors in the test data. Frequent heat exchanger heat sources can easily cause irreversible compression to the product, affecting the efficiency and data results of the test.
The glass beads are pressed and contacted with the temperature measurement heat source. By installing a cup-shaped carrier at the bottom of the heating block, the glass beads and springs are installed in the cup-shaped carrier. The end of the thermocouple wire is positioned on the glass beads. The glass beads protrude from the bottom of the heating block through the spring, forming a pressing contact with the radiator table to ensure reliable contact between the end of the thermocouple wire and the radiator table.
The number of debugging of the temperature measurement point is reduced, and the replacement of heating blocks caused by the movement or falling off of the temperature measurement point is avoided. The positioning reliability during the temperature measurement process is improved, the testing error is reduced, and the thermal testing efficiency and the reliability and effectiveness of the thermal performance test of the radiator are improved.
Smart Images
Figure CN222599183U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a glass bead spring pressure contact temperature measurement heat source, which is used for the thermal performance test of a radiator. Background Art
[0002] At present, the photovoltaic industry is constantly expanding, and skived-tooth heat sinks are widely produced and used in outdoor photovoltaic inverter IGBT heat dissipation, mainly for driver boards, IGBT components and other switching devices. For skived-tooth heat sinks, their thermal performance tests must meet routine test and type test requirements. In order to simulate the heat source and accurately test the temperature of the heat sink, thermal performance testing is an important part of obtaining effective data. There are currently three main test methods for the thermal performance test of the heat sink TC surface:
[0003] 1. Use thermally conductive silicone sheet as a carrier to place the thermocouple: When testing in this way, the thermocouple wire is not strong enough and is easy to loosen and fall off, resulting in a high probability that the measuring point contacts the gap and the heat pipe, and the test data shows significant errors. In addition, the thermocouple measuring point is displaced, which can easily cause fatal damage such as scratches and pits to the product bonding surface.
[0004] 2. Use tin foil (copper foil) tape to arrange the thermocouple. If the foil is not tightly attached, it will lead to poor contact and easy loosening, causing the thermocouple to fall off during testing, causing the test temperature to deviate far from the actual data.
[0005] 3. When the thermocouple is soldered on the copper block, the test result is easily affected by the heating rod, the test temperature is much higher, and if the solder joint breaks inside, it is extremely difficult to repair, the processing cost is expensive, and the reprocessing cycle is long.
[0006] The above-mentioned test method is unreasonable, which results in the need to constantly replace the internal accessories of the simulated heat source, frequent maintenance and replacement, and complicated operation, which affects the test efficiency and data results. In addition, the frequent removal and replacement of the heat source will cause a large probability of the position of the thermocouple probe to change, and it is easy to cause irreversible pressure damage to the IGBT bonding surface of the product, increase the test error, and affect the reliability of the judgment of the thermal performance of the radiator. Utility Model Content
[0007] The glass bead spring-pressed contact temperature measurement heat source provided by the utility model forms a spring-pressed point contact between the end of the thermocouple wire and the radiator table surface to form a temperature measurement point, which reduces the number of temperature measurement point debugging times and avoids the replacement of the heating block caused by the movement or falling off of the temperature measurement point, ensures the positioning reliability of each temperature measurement point during the temperature measurement process, improves the thermal test efficiency, improves the reliability and effectiveness of the radiator thermal performance test, and provides reliable test data for the judgment of the radiator thermal performance.
[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0009] The glass bead spring-pressed contact temperature measurement heat source is characterized in that it includes a heating block on which a heating tube can be installed and a glass bead spring-pressed contact temperature measurement component, wherein the glass bead spring-pressed contact temperature measurement component includes a cup-shaped carrier installed at the bottom of the heating block and opening downward, a glass bead movably installed in the cup-shaped carrier, a spring installed in the cup-shaped carrier and a thermocouple wire connected to the thermocouple, the glass bead is pushed by the spring to protrude from the bottom surface of the heating block, the end of the thermocouple wire passes through the heating block and the cup-shaped carrier to be positioned on the glass bead, and protrudes from the bottom surface of the heating block along with the glass bead.
[0010] Preferably, a carrier mounting hole matching with the cup-shaped carrier is provided on the heating block, the cup-shaped carrier is transitionally mounted in the carrier mounting hole and the end surface of the cup-shaped carrier is flush with the bottom surface of the heating block.
[0011] Preferably, the inner wall of the carrier mounting hole is provided with an annular step surface one, and the outer wall of the cup-shaped carrier is provided with an annular step matching surface abutting against the annular step surface one.
[0012] Preferably, the heating block is provided with an entry hole for the thermocouple wire to pass through, the entry hole and the carrier mounting hole are coaxially connected to pass through the heating block, the bottom of the cup-shaped carrier is provided with a threading hole for the thermocouple wire to pass through, the glass bead is provided with radial wire holes for the thermocouple wire to pass through and arranged along the diameter, the entry hole, threading hole and radial wire holes are coaxially aligned, the end of the thermocouple wire passes through the entry hole, through the threading hole and the radial wire holes, and is bent and positioned on the glass bead.
[0013] Preferably, the inner diameter of the carrier mounting hole is larger than the inner diameter of the wire entry hole, a second annular step surface is formed between the carrier mounting hole and the wire entry hole, a packaging space is formed between the cup-shaped carrier bottom surface and the second annular table surface, and high temperature resistant glue is packaged in the closed space.
[0014] Preferably, the top of the cup-shaped carrier has a convex ring protruding inwardly, the diameter of the convex ring is smaller than the diameter of the glass bead, and the inner diameter of the cup-shaped carrier is larger than the diameter of the glass bead.
[0015] Preferably, the heating block is an aluminum block, the glass beads and the cup-shaped carrier are both made of high-temperature resistant rubber material, and threaded holes are provided on the four corner edges of the heating block.
[0016] The beneficial effects of the utility model are:
[0017] The utility model discloses a glass bead spring-pressed contact temperature measurement heat source. The cup-shaped carrier in the glass bead spring-pressed contact temperature measurement component is installed at the bottom of the heating block. The spring and the glass bead are installed in the cup-shaped carrier. The end of the thermocouple wire is positioned on the glass bead. The glass bead and the end of the thermocouple wire protrude from the bottom surface of the heating block through the push of the spring. When the heat performance of the radiator is tested, the heating block is positioned on the radiator. The bottom surface of the heating block fits with the radiator table. The glass bead is pushed by the spring to form a spring-pressed contact with the radiator table to press the end of the thermocouple wire on the radiator table, forming a spring-pressed point contact between the end of the thermocouple wire and the radiator table to form a temperature measurement point, thereby ensuring the contact reliability between the temperature measurement point and the radiator table. The temperature measurement point is positioned by positioning the heating block on the radiator table, thereby reducing the number of temperature measurement point debugging times and avoiding It is unnecessary to replace the heating block due to the movement or falling off of the temperature measuring point. The temperature measuring point is in reliable contact with the radiator table and will not move or detach, which ensures the temperature measurement reliability of each temperature measuring point during the temperature measurement process. When testing multiple radiator tables, the test error can be effectively reduced, the consistency of temperature measurement data can be ensured, and the thermal test efficiency is improved. A cup-shaped carrier is installed on the bottom surface of the heating block, and the temperature measuring point is formed by the elastic contact between the glass beads in the cup-shaped carrier and the radiator table. The area of the temperature measuring point is small, which ensures that the thermal conductivity of the heating block and the radiator table is not reduced due to the setting of the temperature measuring point, thereby improving the reliability of the thermal test, avoiding scratches or crushing on the radiator table, improving the reliability and effectiveness of the radiator thermal performance test, and providing reliable test data for the judgment of the radiator thermal performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the glass bead elastic pressure contact temperature measurement heat source of the utility model.
[0019] Figure 2 This is a cross-sectional view of the glass bead elastic contact temperature measurement heat source.
[0020] Figure 3 Schematic diagram of the glass bead spring pressure contact temperature measurement component.
[0021] Figure 4 It is a cross-sectional view of a cup-shaped carrier.
[0022] Figure 5 A cross-sectional view of the heating block. DETAILED DESCRIPTION
[0023] Combine the following Figures 1 to 5 The embodiments of the utility model are described in detail.
[0024] The glass bead spring-pressed contact temperature measurement heat source is characterized in that it includes a heating block 1 on which a heating tube can be installed and a glass bead spring-pressed contact temperature measurement component 2, wherein the glass bead spring-pressed contact temperature measurement component 2 includes a cup-shaped carrier 3 installed at the bottom of the heating block 1 and opening downward, a glass bead 4 movably installed in the cup-shaped carrier 3, a spring 5 installed in the cup-shaped carrier 3 and a thermocouple wire 6 connected to the thermocouple, the glass bead 4 is pushed by the spring 5 to protrude from the bottom surface of the heating block 1, and the end of the thermocouple wire 6 passes through the heating block 1 and the cup-shaped carrier 3 to be positioned on the glass bead 4, and protrudes from the bottom surface of the heating block 1 along with the glass bead 4.
[0025] The glass bead spring-pressed contact temperature measurement heat source described above, the cup-shaped carrier 3 in the glass bead spring-pressed contact temperature measurement component 2 is installed at the bottom of the heating block 1, the spring 5 and the glass bead 4 are installed in the cup-shaped carrier 3, the end of the thermocouple wire 6 is positioned on the glass bead 4, the glass bead 4 and the end of the thermocouple wire 6 protrude from the bottom surface of the heating block 1 by the push of the spring 5, when the heat sink is tested for thermal performance, the heating block 1 is positioned on the heat sink, the bottom surface of the heating block 1 is fitted with the heat sink table, the glass bead 4 is pushed by the spring 5 to form a spring-pressed contact with the heat sink table, and the end of the thermocouple wire 6 is pressed tightly against the heat sink table, forming a spring-pressed point contact between the end of the thermocouple wire and the heat sink table, forming a temperature measuring point, ensuring the contact reliability between the temperature measuring point and the heat sink table, positioning the heating block 1 on the heat sink table forms the positioning of the temperature measuring point, reducing the measurement The number of temperature point debugging can avoid the replacement of the heating block due to the movement or falling of the temperature measuring point. The temperature measuring point is in reliable contact with the radiator table and will not move or detach, ensuring the temperature measurement reliability of each temperature measuring point during the temperature measurement process. When testing multiple radiator tables, the test error can be effectively reduced, the consistency of temperature measurement data can be ensured, and the thermal test efficiency is improved. A cup-shaped carrier is installed on the bottom surface of the heating block, and the temperature measuring point is formed by the elastic contact between the glass beads in the cup-shaped carrier and the radiator table. The area of the temperature measuring point accounts for a small proportion, ensuring that the thermal conductivity of the heating block and the radiator table is not reduced due to the setting of the temperature measuring point, thereby improving the reliability of the thermal test, avoiding scratches or crushing on the radiator table, improving the reliability and effectiveness of the radiator thermal performance test, and providing reliable test data for the judgment of the radiator thermal performance.
[0026] The heating block 1 is provided with a carrier mounting hole 11 that matches the cup-shaped carrier 3. The cup-shaped carrier 3 is installed in the carrier mounting hole 11 in a transitional manner, and the end face of the cup-shaped carrier 3 is flush with the bottom face of the heating block 1. The cup-shaped carrier 3 is transitionally matched with the carrier mounting hole 11, and the end face is flush with the bottom face of the heating block 1. The cup-shaped carrier 3 is easy to install. The end face of the cup-shaped carrier 3 and the bottom face of the heating block 1 are attached to the radiator table together, so that the glass bead 4 forms a spring-pressed contact with the radiator table, and the end of the thermocouple wire is in contact with the spring-pressed point of the radiator table to form a temperature measuring point. The cross-sectional area of the cup-shaped carrier 3 is small, which reduces the influence of the setting of the temperature measuring point on the contact area between the heating block 1 and the radiator table.
[0027] The inner wall of the carrier installation hole 11 has an annular step surface 12, and the outer wall of the cup-shaped carrier 3 has an annular step mating surface 31 that abuts against the annular step surface 1. The abutment between the annular step mating surface 31 and the annular step surface 12 limits the installation depth of the cup-shaped carrier 3 in the carrier installation hole 11, which facilitates the installation of the cup-shaped carrier 3.
[0028] The heating block 1 is provided with a wire entry hole 13 for the thermocouple wire to pass through. The wire entry hole 13 and the carrier mounting hole 11 are coaxially connected to pass through the heating block 1. The bottom of the cup-shaped carrier 3 is provided with a threading hole 32 for the thermocouple wire to pass through. The glass bead 4 is provided with a radial wire hole 41 for the thermocouple wire 6 to pass through and arranged along the diameter. The wire entry hole 13, the threading hole 32 and the radial wire hole 41 are coaxially aligned. The end of the thermocouple wire 6 passes through the threading hole 32 and the radial wire hole 41 from the wire entry hole 13 and is bent and positioned on the glass bead 4. The wire entry hole 13, the threading hole 32 and the radial wire hole 41 are used for the penetration of the thermocouple wire 6. The radial wire hole 41 is arranged along the diameter of the glass bead 4, so that the end of the thermocouple wire 6 is bent and positioned at the vertex position of the bottom surface of the heating block 1 protruding from the glass bead 4, ensuring that the thermocouple wire 6 forms a point contact with the radiator table when the heating block 1 is positioned on the radiator table. One contact position is a temperature measurement point. In actual use, the end of the thermocouple wire 6 should be stripped to expose the wire core before inserting. The wire core at the end of the thermocouple wire 6 is bent and positioned on the glass bead 4, so that the wire core at the end of the thermocouple wire 6 contacts the radiator table to transmit the temperature signal to the thermocouple through the thermocouple wire 6.
[0029] The inner diameter of the carrier mounting hole 11 is larger than the inner diameter of the wire entry hole 13, and an annular step surface 14 is formed between the carrier mounting hole 11 and the wire entry hole 13. A packaging space 5 is formed between the bottom surface of the cup-shaped carrier 3 and the annular table surface 14, and a high temperature resistant glue is packaged in the closed space 5. The thermocouple wire 6 is fixed to the heating block 1 by filling the closed space 5 with the high temperature resistant glue, and the cup-shaped carrier 3 is positioned in the heating block 1, so that the thermocouple wire 6, the heating block 1, and the glass bead spring pressure contact temperature measurement component 2 are integrated into one, ensuring the structural reliability and stability during the test process.
[0030] The top of the cup-shaped carrier 3 has a convex ring 33 protruding inward, the diameter of the convex ring 33 is smaller than the diameter of the glass bead 4, and the inner diameter of the cup-shaped carrier 3 is larger than the diameter of the glass bead 4. The convex ring 33 clamps the glass bead 4, so that the glass bead 4 can only partially extend out of the cup-shaped carrier 3 and will not fall off from the cup-shaped carrier 3. The glass bead 4 can move up and down in the cup-shaped carrier 3. The elastic force of the spring 5 pushes the glass bead 4 to bulge the bottom surface of the heating block 1. When the bottom surface of the heating block 1 is attached to the radiator table, the glass bead 4 can retract into the cup-shaped carrier 3 to compress the spring 5. The elastic force of the spring 5 on the glass bead 4 can make the glass bead 4 form a spring-pressed point contact with the radiator table, and will not cause pressure loss to the radiator table.
[0031] The heating block 1 is an aluminum block, the glass beads 4 and the cup-shaped carrier 3 are both made of high-temperature resistant rubber, and threaded holes 15 are provided at the four corners of the heating block 1. The threaded holes 15 are used to position the heating block 1 on the radiator. The aluminum heating block 1 is provided with a mounting hole for installing the heating tube, and the heating tube is installed in the mounting hole. The heating block 1 is heated by the heating of the heating tube. The cup-shaped carrier 3 and the glass beads 4 are both made of high-temperature resistant rubber, which ensures that they will not be burned under the high-temperature working environment of the heat source, and the internal structure will not be deformed, so that they can work normally.
[0032] The above is a complete description of the technical solutions of the embodiments of the utility model in combination with the accompanying drawings. It should be noted that the described embodiments are only part of the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
Claims
1. Glass bead elastic pressure contact temperature measurement heat source, characterized by: It includes a heating block on which a heating tube can be installed and a glass bead spring-pressed contact temperature measuring component, wherein the glass bead spring-pressed contact temperature measuring component includes a cup-shaped carrier installed at the bottom of the heating block and opening downward, a glass bead movably installed in the cup-shaped carrier, a spring installed in the cup-shaped carrier and a thermocouple wire connected to the thermocouple, the glass bead is pushed by the spring to protrude from the bottom surface of the heating block, the end of the thermocouple wire passes through the heating block and the cup-shaped carrier to be positioned on the glass bead, and protrudes from the bottom surface of the heating block along with the glass bead.
2. The glass bead elastic contact temperature measurement heat source according to claim 1, characterized in that: The heating block is provided with a carrier mounting hole matched with the cup-shaped carrier, the cup-shaped carrier is installed in the carrier mounting hole in a transitional manner, and the end surface of the cup-shaped carrier is flush with the bottom surface of the heating block.
3. The glass bead elastic pressure contact temperature measurement heat source according to claim 2, characterized in that: The inner wall of the carrier installation hole is provided with an annular step surface one, and the outer wall of the cup-shaped carrier is provided with an annular step matching surface which abuts against the annular step surface one.
4. The glass bead elastic contact temperature measurement heat source according to claim 1, characterized in that: The heating block is provided with an entry hole for the thermocouple wire to pass through, the entry hole and the carrier mounting hole are coaxially connected to pass through the heating block, the bottom of the cup-shaped carrier is provided with a threading hole for the thermocouple wire to pass through, the glass bead is provided with radial wire holes for the thermocouple wire to pass through and arranged along the diameter, the entry hole, threading hole and radial wire holes are coaxially aligned, the end of the thermocouple wire passes through the entry hole, through the threading hole and the radial wire holes, and is bent and positioned on the glass bead.
5. The glass bead elastic contact temperature measurement heat source according to claim 4, characterized in that: The inner diameter of the carrier mounting hole is larger than the inner diameter of the wire entry hole, a second annular step surface is formed between the carrier mounting hole and the wire entry hole, a packaging space is formed between the cup-shaped carrier bottom surface and the second annular table surface, and high temperature resistant glue is packaged in the closed space.
6. The glass bead elastic contact temperature measurement heat source according to claim 1, characterized in that: The top of the cup-shaped carrier is provided with a convex ring protruding inwards, the diameter of the convex ring is smaller than the diameter of the glass bead, and the inner diameter of the cup-shaped carrier is larger than the diameter of the glass bead.
7. The glass bead elastic contact temperature measurement heat source according to claim 1, characterized in that: The heating block is an aluminum block, the glass beads and the cup-shaped carrier are both made of high-temperature resistant rubber material, and threaded holes are arranged on the four corners of the heating block.