A detection device for heat exchanger fins and a heat exchanger formed thereby

Abstract

The utility model provides a kind of detection tool of heat exchanger fin and the detection device of heat exchanger formed by it, wherein, the detection tool of heat exchanger fin includes detection table, first detection assembly and second detection assembly are arranged in the detection table, the heat exchanger fin includes flanging hole and special-shaped hole, the cross section of the special-shaped hole and the cross section shape of the flanging hole are not identical;The first detection assembly includes the first detection column for adapting flanging hole and the second detection column for adapting special-shaped hole;The second detection assembly includes detection rod and the limiting piece in detection rod, scale is arranged in the detection rod, the limiting piece can slide along the detection rod.This application detection table plane can ensure the adhesion of heat exchanger fin, improve the accuracy and convenience of thickness detection, simultaneously, the nesting relationship of detection column and hole can quickly verify the eligibility of special-shaped hole, improve the accuracy and convenience of special-shaped hole detection.

Description

Technical Field

[0001] This utility model relates to the technical field of fin inspection, and in particular to a tooling for inspecting heat exchanger fins and a device for inspecting the heat exchanger formed therefrom. Background Technology

[0002] In the production process of air conditioner heat exchangers, the processing quality of the heat exchanger fins is crucial. Heat exchanger fins typically include flanged holes and irregularly shaped holes. Flanged holes are used to pass copper tubes through for overlapping and assembling the fins, while irregularly shaped holes are used for bending and assembling the entire evaporator assembly. Before assembling the heat exchanger fins, it is essential to ensure the precise positioning of the irregularly shaped holes and that the thickness of the heat exchanger conforms to standard dimensions. If the position of the irregularly shaped holes is misaligned, or if the thickness of the heat exchanger fins deviates, it will disrupt the design balance of the air conditioner heat exchanger, leading to problems such as decreased air conditioning and heating performance, increased energy consumption, increased noise, reduced reliability, increased icing and clogging, and increased maintenance costs.

[0003] Currently, the thickness of heat exchanger fins is typically measured using vernier calipers. During measurement, a vernier caliper with sufficient accuracy is used, with the measuring jaws parallel to the length of the fins and against the side of the fin. Ten consecutive fins are selected, and the measuring jaws are aligned with the same edge of the first and tenth fins respectively. The value displayed on the vernier caliper is then steadily read; this value represents the total spacing between the ten fins. Next, the distance between the irregularly shaped hole and the edge of the heat exchanger fin is measured using the vernier caliper to determine if the position of the irregularly shaped hole has shifted.

[0004] The method of manually measuring the thickness of heat exchanger fins and the location of irregular holes using vernier calipers has two major problems:

[0005] First: Human error: It is difficult to maintain consistent measurement claw contact force and edge alignment accuracy;

[0006] Second: Operational difficulty: It is difficult to judge the parallel / fitting state of the measuring claw and the side of the fin with the naked eye.

[0007] Therefore, it is necessary to design tooling that can accurately detect heat exchanger fins. Utility Model Content

[0008] To overcome the problems existing in related technologies, one of the objectives of this utility model is to provide a testing fixture for heat exchanger fins. With the help of the testing table, the thickness of the heat exchanger fins and whether the irregular holes have shifted can be measured simultaneously. The plane of the testing table can ensure the fit of the heat exchanger fins, improving the accuracy and convenience of thickness testing. At the same time, the first and second testing columns are adapted to the positions of the flanged holes and irregular holes in the heat exchanger fins. Through the nesting relationship between the testing columns and the holes, the qualification of the irregular holes can be quickly verified, improving the accuracy and convenience of irregular hole testing.

[0009] A testing fixture for heat exchanger fins includes a testing table, in which a first testing component and a second testing component are provided. The heat exchanger fins include flanged holes and irregular holes, wherein the cross-sectional shape of the irregular holes is different from that of the flanged holes.

[0010] The first detection component includes a first detection post for adapting to flanged holes and a second detection post for adapting to irregularly shaped holes;

[0011] The second detection component includes a detection rod and a limiting member located in the detection rod. The detection rod is provided with a scale, and the limiting member can slide along the detection rod.

[0012] This application adopts a multi-functional integrated design, which integrates the detection of irregular holes and the detection of heat exchanger fin thickness into the same tooling, reducing the footprint of the detection tooling, optimizing the production and testing process, and reducing the company's equipment investment and management costs.

[0013] In a preferred embodiment of this invention, the first detection component includes a second detection column and at least two first detection columns.

[0014] In this application, the number of first detection columns can be greater than or equal to two. The more first detection columns there are, the more positions and angles from which the flanged holes can be inspected, making it particularly suitable for scenarios with stringent fin quality requirements and where the accuracy of the flanged holes is significantly affected, further enhancing the accuracy and reliability of the inspection. However, increasing the number of first detection columns may lead to increased costs. On the one hand, increased material usage for the inspection tooling directly drives up material costs; on the other hand, the layout planning and machining accuracy control of multiple first detection columns become more difficult during the design and manufacturing process of the inspection tooling, thus increasing processing and time costs. In practice, using a design with two first detection columns can effectively inspect the size of irregularly shaped holes while better controlling the manufacturing cost of the inspection tooling.

[0015] In a preferred embodiment of this invention, a scale is provided on the outer side of the first detection column along its extension direction.

[0016] The flanged holes in the heat exchanger fins have a certain height, usually 1.2-1.6mm. By setting a scale in the first detection column, it is possible to quickly determine whether the flanged size is within the preset range of the scale line and whether the flanged size is qualified.

[0017] In a preferred embodiment of this invention, the first detection component and the second detection component are located on the same surface of the detection stage, and the detection rod is parallel to the first detection column.

[0018] When the heat exchanger fins are placed on the testing platform, the first testing post is inserted into the flanged hole. If the second testing post can also be inserted into the irregular hole, and the axis of the irregular hole coincides with the axis of the second testing post, it indicates that the hole spacing between the irregular hole and the flanged hole meets the standard requirements. If the second testing post cannot be inserted into the irregular hole, it indicates that the position of the irregular hole is offset. In this case, it is not necessary to test the thickness of the heat exchanger fins; the heat exchanger fins can be judged as unqualified. When there is no deviation in the irregular hole test, since the first and second testing components are located on the same surface of the testing platform, and the testing rod is parallel to the first testing post, the bottom surface of the heat exchanger fins is in contact with the plane of the testing platform. By sliding the limiting component to the position where it is in contact with the top surface of the heat exchanger fins, the thickness of the heat exchanger fins can be read through the testing rod. This allows for the rapid acquisition of the heat exchanger fin thickness based on the irregular hole test, improving the accuracy and convenience of thickness testing.

[0019] In a preferred embodiment of this invention, the testing platform is a cuboid. When the heat exchanger fins are placed on the testing platform, the first testing post is located inside the flanged hole, the second testing post is located inside the irregular hole, and the testing rod is located on the side of the heat exchanger fins.

[0020] In this application, the testing station is a cuboid, and the first testing component and the second testing component are located in one of the faces of the testing station. When testing the heat exchanger fins, the first testing post and the flanged hole are aligned. If the second testing post and the irregular hole can be aligned, the position and size standard of the irregular hole are determined. At this time, the testing rod is located on the side of the heat exchanger fin. It can abut against the edge of the heat exchanger fin or maintain a small distance from the edge of the heat exchanger fin, and is used to test the thickness of the heat exchanger fin. The first testing component and the second testing component are integrated in the same plane, which improves the efficiency of heat exchanger fin testing.

[0021] In a preferred embodiment of this invention, the detection platform is a cuboid, and the detection rod is located at the edge of the cuboid.

[0022] To avoid interference between the detection rod and the heat exchanger fins, this application places the detection rod at the edge of the plane to ensure that there is no interference when the heat exchanger fins are placed. At the same time, it can quickly read the thickness of the heat exchanger fins when they are in contact with the plane.

[0023] In a preferred embodiment of this invention, a first guide head is provided at the top of the first detection column, and the cross-sectional area of ​​the first guide head is smaller than the cross-sectional area of ​​the first detection column in a plane perpendicular to the first detection column.

[0024] The first guide head can be a conical or frustum-shaped structure, and the cross-sectional area of ​​the first guide head near the first detection column is larger than the cross-sectional area of ​​the first guide head away from the first detection column. The first guide head can guide the insertion of the flange hole and the first detection column, making it easier for the heat exchanger fins to be quickly placed in the detection table.

[0025] In a preferred embodiment of this invention, a second guide head is provided at the top of the second detection column, and the cross-sectional area of ​​the second guide head is smaller than the cross-sectional area of ​​the second detection column in a plane perpendicular to the second detection column.

[0026] The second guide head can be a conical or trapezoidal structure, and the cross-sectional area of ​​the second guide head near the second detection column is larger than the cross-sectional area of ​​the second guide head away from the second detection column. The second guide head can guide the insertion of irregular holes and the second detection column, making it easier for the heat exchanger fins to be quickly placed in the testing stage.

[0027] The second objective of this application is to provide a heat exchanger testing device, including the heat exchanger fin testing fixture described above. The testing platform allows for simultaneous measurement of the heat exchanger fin thickness and whether the irregular holes have shifted. The flat surface of the testing platform ensures the fit of the heat exchanger fins, improving the accuracy and convenience of thickness measurement. Simultaneously, the first and second testing posts are matched with the positions of the flanged holes and irregular holes in the heat exchanger fins. The nesting relationship between the testing posts and holes allows for rapid verification of the irregular hole's conformity, improving the accuracy and convenience of irregular hole detection. This, in turn, ensures precise fin dimensions, improves heat exchanger assembly efficiency, and ensures stable heat exchanger performance.

[0028] The beneficial effects of this utility model are as follows:

[0029] This utility model provides a testing fixture for heat exchanger fins, including a testing platform. The testing platform is provided with a first testing component and a second testing component. The first testing component includes a first testing post for adapting to flanged holes and a second testing post for adapting to irregular holes. The second testing component includes a testing rod and a limiting member located in the testing rod. The testing rod is provided with a scale, and the limiting member can slide along the testing rod. Since the heat exchanger fins include flanged holes and irregular holes, and the cross-sectional shapes of the irregular holes and flanged holes are different; when the heat exchanger fins are placed on the testing platform, the flanged holes are nested on the first testing post. If the irregular holes are nested on the second testing post, it means that the irregular holes have not shifted. If the irregular holes cannot be nested on the second testing post, it means that the position of the irregular holes has shifted. After the flanged holes and irregular holes are nested on the first and second testing posts respectively, the bottom surface of the heat exchanger fins is in contact with the testing platform. At this time, the limiting member is moved along the testing rod until it abuts against the top surface of the heat exchanger, and the thickness of the heat exchanger fins can be read through the scale in the testing rod. This application utilizes a testing station to simultaneously measure the thickness of heat exchanger fins and whether irregular holes have shifted. The flat surface of the testing station ensures the fit of the heat exchanger fins, improving the accuracy and convenience of thickness measurement. Simultaneously, the first and second testing columns are matched with the positions of the flanged holes and irregular holes in the heat exchanger fins. Through the nesting relationship between the testing columns and holes, the qualification of irregular holes can be quickly verified, improving the accuracy and convenience of irregular hole detection.

[0030] This application also provides a heat exchanger testing device, including a heat exchanger fin testing fixture as described above. With the aid of a testing platform, the thickness of the heat exchanger fins and whether the irregular holes have shifted can be measured simultaneously. The plane of the testing platform ensures the fit of the heat exchanger fins, improving the accuracy and convenience of thickness measurement. Simultaneously, the first and second testing columns are matched with the positions of the flanged holes and irregular holes in the heat exchanger fins. Through the nesting relationship between the testing columns and holes, the qualification of the irregular holes can be quickly verified, improving the accuracy and convenience of irregular hole detection. This ensures precise fin dimensions, improves the assembly efficiency of the heat exchanger, and ensures stable heat exchanger performance. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the heat exchanger fins in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the structure of the first detection component in the detection station in an embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the first detection component detecting the heat exchanger fins in an embodiment of this application;

[0034] Figure 4This is a schematic diagram of the second detection component detecting the heat exchanger fins in an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the testing fixture used to test the heat exchanger fins in an embodiment of this application.

[0036] Figure label:

[0037] 11. Testing platform; 12. First testing column; 13. Second testing column; 14. Testing rod; 15. Limiting component; 16. Heat exchanger fins; 161. Flanged hole; 162. Irregular hole. Detailed Implementation

[0038] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0039] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0040] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] Example 1

[0042] like Figures 1-5 As shown, the present application provides a testing fixture for heat exchanger fins, including a testing table 11, wherein a first testing component and a second testing component are provided in the testing table 11, and the heat exchanger fin 16 includes a flanged hole 161 and a shaped hole 162, wherein the cross-sectional shape of the shaped hole 162 is different from that of the flanged hole 161.

[0043] The first detection component includes a first detection post 12 for adapting to the flanged hole 161 and a second detection post 13 for adapting to the irregular hole 162;

[0044] The second detection component includes a detection rod 14 and a limiting member 15 located in the detection rod 14. The detection rod 14 is provided with a scale, and the limiting member 15 can slide along the detection rod 14.

[0045] In this application, the testing table 11 is made of high-precision aluminum alloy. It is CNC machined to form a second testing post 13 that perfectly matches the contour of the standard irregular hole 162 of the air conditioner heat exchanger fins 16, and a first testing post 12 that perfectly matches the contour of the standard flanged hole 161. The surface of the testing table 11 is anodized to enhance its wear resistance.

[0046] In this application, the first detection component is used to detect whether the position of the irregular hole 162 has shifted. The heat exchanger fin 16 includes a flanged hole 161 and an irregular hole 162. The flanged hole 161 is used to pass copper tubes to stack and combine fins, while the irregular hole 162 facilitates the bending and assembly of the entire evaporator. According to the design requirements of the air conditioning heat exchanger fin 16, the heat exchanger fin 16 may include one irregular hole 162 or multiple irregular holes 162. The irregular hole 162 is mainly used to assist in the bending of the finished product. If there are multiple irregular holes 162 in the heat exchanger fin 16 of the same specification, the dimensions of the irregular hole 162 and the flanged hole 161 will necessarily be the same under a specific stamping method.

[0047] Correspondingly, the number of second detection columns 13 in this application can be set to multiple, consistent with the position and number of irregular holes 162 in the heat exchanger fins 16, so that the position and size of multiple irregular holes 162 can be determined by one detection.

[0048] This application can also use only one second detection column 13. When there are multiple irregular holes 162 in the heat exchanger fins 16, the multiple irregular holes 162 can be detected sequentially through the same second detection column 13. The detection fixture containing only one second detection column 13 can detect irregular holes 162 in different positions, which can improve detection efficiency, reduce the number of fixtures, and reduce space occupation and cost.

[0049] In this application, the first detection column 12 is adapted to the flanged hole 161 in the heat exchanger fin 16. The first detection column 12 serves two purposes: first, to detect parameters such as the size of the flanged hole 161, thereby improving the accuracy and comprehensiveness of the detection; second, to locate the irregular hole 162, that is, to determine whether the position and distance of the irregular hole 162 relative to the flanged hole 161 have shifted, and to detect the accuracy of the position of the irregular hole 162 while ensuring its dimensional parameters.

[0050] In this application, the number of first detection columns 12 can be greater than or equal to two. The more first detection columns 12 there are, the more positions and angles the flanged hole 161 can be detected. This is especially suitable for scenarios where the fin quality requirements are stringent and the accuracy of the flanged hole 161 is significantly affected, which can further enhance the accuracy and reliability of the detection.

[0051] However, increasing the number of first detection columns 12 may lead to increased costs. On the one hand, the increased material usage of the detection fixture will directly drive up material costs; on the other hand, during the design and manufacturing process of the detection fixture, the layout planning and machining accuracy control of multiple first detection columns 12 become more difficult, thereby increasing processing costs and time costs. In actual operation, the design of two first detection columns 12 can effectively detect the size of irregular holes 162 while better controlling the manufacturing cost of the detection fixture.

[0052] After the first inspection component of this application inspects the flanged hole 161 and the irregular hole 162, if the dimensions and positions of the flanged hole 161 and the irregular hole 162 in the heat exchanger fin 16 are standard, and the bottom surface of the heat exchanger fin 16 is in contact with the inspection table 11, then it is only necessary to move the limiting member 15 to make it abut against the heat exchanger fin 16 to read the scale. In terms of operational convenience, the complex operation of manual alignment is eliminated. The inspector does not need to spend a lot of effort to adjust the parallelism and fit of the limiting member 15 and the inspection table 11 with the heat exchanger fin 16, which greatly reduces the difficulty of operation, shortens the inspection time, and improves the inspection efficiency. In terms of detection accuracy, the limiting component 15 and the detection rod 14 are fixedly installed in the detection table 11, simulating the principle of vernier calipers but eliminating variables caused by human operation, such as inconsistent contact force of the measuring jaws in vernier calipers and edge alignment deviations. This effectively avoids parallelism errors and reading errors, and can provide more accurate and reliable detection data on the thickness of heat exchanger fins 16, providing a solid guarantee for the production quality control of air conditioning heat exchangers.

[0053] In summary, since the heat exchanger fins 16 include flanged holes 161 and irregular holes 162, and the cross-sectional shapes of the irregular holes 162 and the flanged holes 161 are different; when the heat exchanger fins 16 are placed on the testing platform 11, the flanged holes 161 are nested on the first testing post 12. If the irregular holes 162 are nested on the second testing post 13, it means that the irregular holes 162 have not shifted. If the irregular holes 162 cannot be nested on the second testing post 13, it means that the position of the irregular holes 162 has shifted.

[0054] After the flanged hole 161 and the irregular hole 162 are respectively nested on the first detection column 12 and the second detection column 13, the bottom surface of the heat exchanger fin 16 is in contact with the detection table 11. At this time, the limiting member 15 is moved along the detection rod 14 until it abuts against the top surface of the heat exchanger, and the thickness of the heat exchanger fin 16 can be read through the scale in the detection rod 14.

[0055] This application utilizes the testing station 11 to simultaneously measure the thickness of the heat exchanger fins 16 and whether the irregular hole 162 has shifted. The plane of the testing station 11 ensures the fit of the heat exchanger fins 16, improving the accuracy and convenience of thickness detection. At the same time, the first testing column 12 and the second testing column 13 are matched with the positions of the flanged hole 161 and the irregular hole 162 in the heat exchanger fins 16. Through the nesting relationship between the testing columns and the holes, the qualification of the irregular hole 162 can be quickly verified, improving the accuracy and convenience of irregular hole 162 detection.

[0056] Example 2

[0057] like Figures 1-5 As shown, the present application provides a testing fixture for heat exchanger fins, including a testing table 11, wherein a first testing component and a second testing component are provided in the testing table 11, and the heat exchanger fin 16 includes a flanged hole 161 and a shaped hole 162, wherein the cross-sectional shape of the shaped hole 162 is different from that of the flanged hole 161.

[0058] The first detection component includes a first detection post 12 for adapting to the flanged hole 161 and a second detection post 13 for adapting to the irregular hole 162;

[0059] The second detection component includes a detection rod 14 and a limiting member 15 located in the detection rod 14. The detection rod 14 is provided with a scale, and the limiting member 15 can slide along the detection rod 14.

[0060] Specifically, the first detection component includes a second detection column 13 and at least two first detection columns 12.

[0061] In this application, the number of first detection columns 12 can be greater than or equal to two. The more first detection columns 12 there are, the more positions and angles the flanged hole 161 can be inspected, which is particularly suitable for scenarios with stringent fin quality requirements and where the accuracy of the flanged hole 161 is significantly affected, further enhancing the accuracy and reliability of the inspection. However, increasing the number of first detection columns 12 may lead to increased costs. On the one hand, increased material usage for the inspection tooling directly drives up material costs; on the other hand, the layout planning and machining accuracy control of multiple first detection columns 12 become more difficult during the design and manufacturing process of the inspection tooling, thus increasing processing and time costs. In practical operation, the design using two first detection columns 12 can effectively inspect the size of the irregular hole 162 while better controlling the manufacturing cost of the inspection tooling.

[0062] Specifically, along the extension direction of the first detection post 12, a scale is provided on the outer side of the first detection post 12.

[0063] The flanged hole 161 in the heat exchanger fin 16 has a certain height, usually 1.2-1.6mm. By setting a scale in the first detection column 12, it is possible to quickly determine whether the flanged size is within the preset range of the scale line and whether the flanged size is qualified.

[0064] Specifically, the first detection component and the second detection component are located on the same surface of the detection stage 11, and the detection rod 14 is parallel to the first detection column 12.

[0065] When the heat exchanger fins 16 are placed on the testing table 11, the first testing post 12 is first inserted into the flanged hole 161. If the second testing post 13 can also be inserted into the irregular hole 162, and the axis of the irregular hole 162 coincides with the axis of the second testing post 13, it means that the hole spacing of the irregular hole 162 and the flanged hole 161 meets the standard requirements. If the second testing post 13 cannot be inserted into the irregular hole 162, it means that the position of the irregular hole 162 has shifted. At this time, it is not necessary to test the thickness of the heat exchanger fins 16 to determine that the heat exchanger fins 16 are unqualified. When there is no deviation in the detection of the irregular hole 162, since the first detection component and the second detection component are located on the same surface of the detection stage 11, and the detection rod 14 is parallel to the first detection column 12, the bottom surface of the heat exchanger fin 16 is in contact with the plane of the detection stage 11. The sliding limit member 15 is moved to a position in contact with the top surface of the heat exchanger fin 16, and the thickness of the heat exchanger fin 16 can be read by the detection rod 14. Based on the detection of the irregular hole 162, the thickness of the heat exchanger fin 16 can be quickly obtained, which improves the accuracy and convenience of thickness detection.

[0066] Specifically, the testing platform 11 is a cuboid. When the heat exchanger fins 16 are placed in the testing platform 11, the first testing post 12 is located in the flanged hole 161, the second testing post 13 is located in the irregular hole 162, and the testing rod 14 is located on the side of the heat exchanger fins 16.

[0067] In this application, the testing platform 11 is a cuboid. The first testing component and the second testing component are located in one of the faces of the testing platform 11. When testing the heat exchanger fins 16, the first testing post 12 and the flanged hole 161 are aligned. If the second testing post 13 and the irregular hole 162 can be aligned, the position and size standard of the irregular hole 162 are determined. At this time, the testing rod 14 is located on the side of the heat exchanger fins 16. It can abut against the edge of the heat exchanger fins 16 or maintain a small gap from the edge of the heat exchanger fins 16. It is used to test the thickness of the heat exchanger fins 16. The first testing component and the second testing component are integrated in the same plane, which improves the efficiency of testing the heat exchanger fins 16.

[0068] Specifically, the detection platform 11 is a cuboid, and the detection rod 14 is located at the edge of the cuboid.

[0069] To avoid interference between the detection rod 14 and the heat exchanger fins 16, this application sets the detection rod 14 at the edge of the plane to ensure that there is no interference with the detection rod 14 when the heat exchanger fins 16 are placed. At the same time, the thickness of the heat exchanger fins 16 can be quickly read when the heat exchanger fins 16 are in contact with the plane.

[0070] Specifically, a first guide head is provided at the top of the first detection column 12. In a plane perpendicular to the first detection column 12, the cross-sectional area of ​​the first guide head is smaller than the cross-sectional area of ​​the first detection column 12.

[0071] The first guide head can be a conical structure or a frustum-shaped structure, and the cross-sectional area of ​​the first guide head near the first detection post 12 is greater than the cross-sectional area of ​​the first guide head away from the first detection post 12. The first guide head can guide the insertion of the flange hole 161 and the first detection post 12, so that the heat exchanger fins 16 can be quickly placed in the detection table 11.

[0072] Specifically, a second guide head is provided at the top of the second detection column 13. In a plane perpendicular to the second detection column 13, the cross-sectional area of ​​the second guide head is smaller than the cross-sectional area of ​​the second detection column 13.

[0073] The second guide head can be a conical or trapezoidal structure, and the cross-sectional area of ​​the second guide head near the second detection post 13 is greater than the cross-sectional area of ​​the second guide head away from the second detection post 13. The second guide head can guide the insertion of the irregular hole 162 and the second detection post 13, making it easier for the heat exchanger fins 16 to be quickly placed in the detection stage 11.

[0074] Example 3

[0075] like Figures 1-5 As shown, this application provides a testing fixture for heat exchanger fins, used to inspect the size and position of the irregular holes 162 in the heat exchanger fins 16, and also to inspect the thickness of the heat exchanger fins 16. The heat exchanger fins 16 include flanged holes 161 and irregular holes 162. The cross-sectional shape of the irregular holes 162 is different from that of the flanged holes 161; the flanged holes 161 are circular, while the irregular holes 162 are non-standard circular. There are multiple flanged holes 161 and one irregular hole 162. The flanged holes 161 are used to pass copper tubes for stacking and assembling fins, while the irregular holes 162 facilitate the bending and assembly of the entire evaporator assembly.

[0076] The testing fixture includes a testing table 11, which is a cuboid structure made of high-precision aluminum alloy. A second testing column 13, perfectly matching the standard irregular contour of the air conditioner heat exchanger fins 16, and a first testing column 12, perfectly matching the contour of the standard flanged hole 161 of the air conditioner heat exchanger fins 16, are formed by CNC machining. The surface of the testing table 11 is anodized to enhance its wear resistance.

[0077] like Figure 5 As shown, a first detection assembly and a second detection assembly are arranged in the same plane in the detection platform 11. The first detection assembly includes a first detection post 12 for adapting to the flanged hole 161 and a second detection post 13 for adapting to the irregular hole 162; wherein, there is one second detection post 13 and five first detection posts 12. Along the extending direction of the first detection post 12, a scale is provided on the outer side of the first detection post 12, with a scale interval of 0.1 mm. The first detection post 12 and the second detection post 13 are arranged in parallel. The shape and position of the first detection post 12 are adapted to the shape and position of the standard flanged hole 161 in the heat exchanger fin 16, and the shape and position of the second detection post 13 are adapted to the shape and position of the standard irregular hole 162 in the heat exchanger fin 16.

[0078] The top of the first detection post 12 is provided with a first guide head, and the cross-sectional area of ​​the first guide head is smaller than the cross-sectional area of ​​the first detection post 12 in a plane perpendicular to the first detection post 12. The top of the second detection post 13 is provided with a second guide head, and the cross-sectional area of ​​the second guide head is smaller than the cross-sectional area of ​​the second detection post 13 in a plane perpendicular to the second detection post 13.

[0079] The second detection component includes a detection rod 14 and a limiting member 15 located in the detection rod 14. The detection rod 14 is provided with a scale, and the limiting member 15 can slide along the detection rod 14.

[0080] The detection rod 14 is located at the edge of the cuboid. When the heat exchanger fins 16 are placed in the detection platform 11, the first detection post 12 is located inside the flanged hole 161, the second detection post 13 is located inside the irregular hole 162, and the detection rod 14 is located on the side of the heat exchanger fins 16. The structure of the limiting member 15 is similar to the shape of the measuring claw of a vernier caliper in the prior art, and it can fit against the upper surface of the heat exchanger fins 16.

[0081] When the heat exchanger fins 16 are placed on the testing platform 11, the flanged hole 161 is nested on the first testing post 12. If the irregular hole 162 is nested exactly on the second testing post 13, and the axis of the irregular hole 162 coincides with the axis of the second testing post 13, it indicates that the position and size of the irregular hole 162 are standard. If the irregular hole 162 cannot be nested on the second testing post 13, it indicates that the position of the irregular hole 162 is off or the size is not standard. After the flanged hole 161 and the irregular hole 162 are nested on the first testing post 12 and the second testing post 13 respectively, the bottom surface of the heat exchanger fins 16 is in contact with the testing platform 11. At this time, the limiting member 15 is moved along the testing rod 14 until it abuts against the top surface of the heat exchanger, and the thickness of the heat exchanger fins 16 can be read through the scale in the testing rod 14.

[0082] This application allows for the simultaneous testing of multiple heat exchanger fins 16, such as... Figure 5 As shown, batch inspection of heat exchanger fins 16 is achieved. During this process, the scale reading in the detection rod 14 represents the total thickness of multiple heat exchanger fins 16, which can then be converted to the thickness of a single heat exchanger fin 16. Simultaneous measurement of multiple heat exchanger fins 16 allows for quick location of defective irregular holes 162, improving batch measurement efficiency.

[0083] This application adopts a multi-functional integrated design, which integrates the detection of irregular hole 162 and the thickness detection of heat exchanger fin 16 into the same tooling, reducing the footprint of the detection tooling, optimizing the production and testing process, and reducing the company's equipment investment and management costs.

[0084] Example 4

[0085] This application also provides a heat exchanger testing device, including a heat exchanger fin testing fixture as described above. Using a testing table 11, the thickness of the heat exchanger fins 16 and whether the irregular holes 162 have shifted can be measured simultaneously. The plane of the testing table 11 ensures the fit of the heat exchanger fins 16, improving the accuracy and convenience of thickness testing. Simultaneously, the first testing post 12 and the second testing post 13 are matched with the positions of the flanged holes 161 and irregular holes 162 in the heat exchanger fins 16. Through the nesting relationship between the testing posts and holes, the qualification of the irregular holes 162 can be quickly verified, improving the accuracy and convenience of irregular hole 162 testing; thereby ensuring precise fin dimensions, improving the assembly efficiency of the heat exchanger, and ensuring stable heat exchanger performance.

[0086] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings. In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0087] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0088] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0089] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A testing fixture for heat exchanger fins, characterized in that, The device includes a testing platform (11), in which a first testing component and a second testing component are provided. The heat exchanger fins (16) include a flanged hole (161) and a shaped hole (162), and the cross-section of the shaped hole (162) and the cross-section of the flanged hole (161) are different. The first detection component includes a first detection post (12) for adapting to the flanged hole (161) and a second detection post (13) for adapting to the irregular hole (162); The second detection component includes a detection rod (14) and a limiting member (15) located in the detection rod (14). The detection rod (14) is provided with a scale, and the limiting member (15) can slide along the detection rod (14).

2. The inspection fixture for heat exchanger fins according to claim 1, characterized in that, The first detection component includes a second detection column (13) and at least two first detection columns (12).

3. The inspection fixture for heat exchanger fins according to claim 1, characterized in that, Along the extension direction of the first detection column (12), a scale is provided on the outer side of the first detection column (12).

4. The inspection fixture for heat exchanger fins according to claim 1, characterized in that, The first detection component and the second detection component are located on the same surface of the detection stage (11), and the detection rod (14) is parallel to the first detection column (12).

5. The inspection fixture for heat exchanger fins according to claim 4, characterized in that, The testing platform (11) is a cuboid. When the heat exchanger fins (16) are placed in the testing platform (11), the first testing column (12) is located in the flanged hole (161), the second testing column (13) is located in the irregular hole (162), and the testing rod (14) is located on the side of the heat exchanger fins (16).

6. The inspection fixture for heat exchanger fins according to claim 4, characterized in that, The detection platform (11) is a cuboid, and the detection rod (14) is located at the edge of the cuboid.

7. The inspection fixture for heat exchanger fins according to claim 1, characterized in that, The top of the first detection column (12) is provided with a first guide head. In a plane perpendicular to the first detection column (12), the cross-sectional area of ​​the first guide head is smaller than the cross-sectional area of ​​the first detection column (12).

8. The inspection fixture for heat exchanger fins according to claim 1, characterized in that, The top of the second detection column (13) is provided with a second guide head. In a plane perpendicular to the second detection column (13), the cross-sectional area of ​​the second guide head is smaller than the cross-sectional area of ​​the second detection column (13).

9. A detection device for a heat exchanger, characterized in that, The invention includes a testing fixture for heat exchanger fins as described in any one of claims 1-8.

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