Ventilation structure and testing machine

Abstract

The utility model discloses a ventilation structure and a testing machine, and the structure comprises a housing which is provided with an installation port; the ventilation plate is connected with the shell in a pluggable mode and covers the mounting opening, and a plurality of ventilation holes are formed in the ventilation plate; the dustproof part is detachably connected with the ventilation plate and covers the ventilation hole; and the judgment device is installed on the shell and used for judging whether the ventilation plate is installed on the shell or not and / or whether the dustproof piece is installed on the ventilation plate or not. The ventilation plate is connected with the shell in a pluggable mode, the dustproof piece is detachably connected to the ventilation plate, and therefore when the dustproof piece needs to be replaced, the ventilation plate can be conveniently pulled out of the shell, and the dustproof piece is replaced. Therefore, the dustproof part can be conveniently replaced, the replacement difficulty is reduced, the replacement time is shortened, the influence on production is reduced, and the production efficiency is improved. Through the arrangement of the judgment device, the judgment device judges whether the ventilation plate is installed on the shell or not and judges whether the dustproof piece is installed on the ventilation plate or not, and therefore neglected installation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, and in particular to a ventilation structure and a testing machine. Background Technology

[0002] Electronic devices generate heat during operation. If this heat is not dissipated in time, the temperature of electronic components will rise, potentially damaging the device. Forced air cooling systems direct cool air through the inlet, components, heat sink, and outlet, expelling the heated air from the device to ensure its normal operation.

[0003] To ensure sufficient airflow, air inlets and outlets (i.e., ventilation holes) are typically designed with various shapes and a certain opening area. Ventilation holes can be categorized by maintainability into fixed and removable types. Fixed ventilation holes, which are directly drilled into or welded to the equipment panel, have a relatively simple structure and are often used in equipment that does not require dust protection.

[0004] In the semiconductor industry, equipment located in cleanrooms typically doesn't require dustproofing. However, due to various factors, some equipment, even after long-term operation, still exhibits significant internal dust accumulation. Dust poses a considerable threat to high-voltage equipment, such as reducing insulation performance, affecting heat dissipation, and impacting operating efficiency. To mitigate the probability of malfunctions and equipment damage, dustproofing of ventilation openings is necessary for high-voltage equipment; a small investment to reduce potential risks is essential. Depending on the pollution level of the environment, dustproof components need regular replacement. Especially for production lines, fixed ventilation components require prolonged downtime for maintenance, impacting production line utilization and company profits. To avoid prolonged downtime affecting production efficiency, removable ventilation openings are usually snap-on, with most of the removal surface inside the equipment, making them suitable for equipment with hinges or other doors. For smaller equipment such as instruments and test boxes, which typically lack movable doors, a panel needs to be removed to access the ventilation openings, resulting in a relatively large workload and the need to reserve space for disassembly, leading to less than ideal space utilization for small equipment.

[0005] In view of this, there is an urgent need for a ventilation structure and testing machine that can facilitate the replacement of dustproof components and reduce the difficulty of replacement. Utility Model Content

[0006] In view of the above-mentioned problems of the prior art, this application provides a ventilation structure and testing machine that can facilitate the replacement of dustproof parts and reduce the difficulty of replacement.

[0007] To achieve the above objectives, a first aspect of this application provides a ventilation structure, comprising: a housing having an installation port; a ventilation plate pluggably connected to the housing and covering the installation port, the ventilation plate having a plurality of ventilation holes; a dustproof component detachably connected to the ventilation plate and covering the ventilation holes; and a judging device mounted on the housing for judging whether the ventilation plate is mounted on the housing and / or whether the dustproof component is mounted on the ventilation plate.

[0008] As described above, by making the ventilation plate pluggable to the housing, the dustproof component is detachably connected to the ventilation plate. This allows for easy removal of the ventilation plate from the housing when the dustproof component needs to be replaced, facilitating replacement, reducing difficulty, shortening replacement time, minimizing production disruption, and improving production efficiency. Furthermore, this application includes a judgment device to determine whether the ventilation plate is installed on the housing and whether the dustproof component is installed on the ventilation plate, thus preventing omissions and avoiding disruption to the normal operation of the equipment.

[0009] As one possible implementation of the first aspect, the determining device is a limit switch. When the ventilation plate is plugged into or unplugged into the housing, the limit switch is closed; when the ventilation plate is not plugged into or unplugged into the housing, the limit switch is open.

[0010] As described above, by setting a limit switch, the ventilation panel is plugged into and disconnected from the housing, which pushes the limit switch to close / open, thus determining whether the ventilation panel has been installed correctly. This prevents omissions and avoids affecting the normal operation of the equipment.

[0011] As one possible implementation of the first aspect, the outer casing is provided with a first locking slot and a second locking slot, the first locking slot and the second locking slot being located at corresponding positions at both ends of the mounting port in the direction of the plug-in connection; the ventilation plate is provided with a first locking connector and a second locking connector, the first locking connector and the second locking connector being located at corresponding positions of the first locking slot and the second locking slot, respectively, and being able to be inserted into the first locking slot and the second locking slot in the direction of the plug-in connection.

[0012] As described above, by inserting the first and second locking connectors into the first and second locking slots respectively along the insertion / removal direction, the ventilation panel can be simultaneously inserted and removed from the outer casing while being locked in two positions. This improves the firmness and stability of the ventilation panel.

[0013] As one possible implementation of the first aspect, the housing includes a first surface and a second surface that are bent and connected, and the mounting port is disposed on the first surface; the ventilation plate includes a ventilation part and a fixing part that are bent and connected, and when the ventilation plate is plugged and unplugged onto the housing, the ventilation part covers the mounting port, and the fixing part abuts against the second surface on the side facing the plugging and unplugging direction.

[0014] As described above, by bending the ventilation section and the fixing section together, the fixing section abuts against the second surface during the insertion and removal connection, thereby limiting the ventilation plate in the insertion and removal direction. Simultaneously, by abutting the fixing section against the second surface, the fixing section can be exposed on the outside of the housing, facilitating user installation and removal of the ventilation plate from the outside of the housing. This also facilitates the replacement of dustproof components and reduces the difficulty of replacement.

[0015] As one possible implementation of the first aspect, it also includes a fixing screw that passes through the fixing part and is fixedly connected to the second surface.

[0016] As described above, by using fixing screws to securely connect the ventilator to the second surface through the fixing part, the ventilator can be disassembled and assembled from the outside of the housing, making it convenient for users to do so. This also facilitates the replacement of dustproof components and reduces the difficulty of replacement.

[0017] As one possible implementation of the first aspect, the first locking opening is a through hole and is disposed on the second surface; the second locking opening is a notch and is disposed on the edge of the mounting opening away from the second surface; the first locking connector is a protrusion and is disposed on the fixing part, which is adapted to the shape of the first locking opening; the second locking connector is a stepped boss and has a first part and a second part, the first part is disposed on the side of the ventilation part facing the first surface, the second part is disposed on the end of the first part away from the ventilation part, the size of the first part is adapted to the size of the second locking opening, and the size of the second part is larger than the first part.

[0018] As one possible implementation of the first aspect, the ventilation plate is provided with a sealing groove, the sealing groove being an annular groove, and the ventilation hole being located on one side of the annular sealing groove; the ventilation structure further includes a sealing element, which is installed in the sealing groove to press and fix the dustproof element in the sealing groove.

[0019] As described above, the dustproof component is pressed and fixed in the sealing groove by the sealing element, which facilitates the installation and removal of the dustproof component. Therefore, when replacing the dustproof component, the difficulty of disassembly and assembly is reduced, and the replacement efficiency is improved.

[0020] As one possible implementation of the first aspect, it also includes a fan, which is mounted on the housing and drives air to enter the housing through the mounting port and then exit through the air outlet on the housing; the determining device is a wind speed sensor, which detects the wind speed inside the housing, and when the wind speed sensor detects a wind speed greater than a first threshold, it determines that the dustproof component is not installed on the ventilation plate, and / or when the wind speed sensor detects a wind speed less than or equal to the first threshold, it determines that the dustproof component is installed on the ventilation plate.

[0021] As one possible implementation of the first aspect, when the wind speed sensor detects that the wind speed is less than a second threshold, it determines that the dustproof component needs to be replaced, where the second threshold is less than the first threshold.

[0022] As described above, when no dustproof components are installed on the ventilation panel, air can freely enter the housing through the ventilation holes. After installing dustproof components on the ventilation panel and covering the ventilation holes, the dustproof components, while filtering the air, also obstruct the airflow through the ventilation holes, thus reducing the wind speed through the holes and consequently lowering the wind speed detected by the anemometer. Furthermore, as dust and other impurities gradually accumulate on the dustproof components, the obstruction to the airflow through the ventilation holes gradually increases, further reducing the wind speed detected by the anemometer. Therefore, the presence of dustproof components on the ventilation panel can be determined by detecting whether the wind speed exceeds a first threshold, and the need for replacement of dustproof components can be determined by detecting whether the wind speed is below a second threshold. This improves the understanding of the equipment, prevents users from forgetting to install dustproof components, and reminds users to replace them promptly to avoid affecting the normal operation of the equipment.

[0023] A second aspect of this application provides a testing machine, including the ventilation structure described in any one of the first aspects of this application.

[0024] As described above, by making the ventilation plate pluggable to the housing, the dustproof component is detachably connected to the ventilation plate. This allows for easy removal of the ventilation plate from the housing when the dustproof component needs to be replaced, facilitating replacement, reducing difficulty, shortening replacement time, minimizing production disruption, and improving production efficiency. Furthermore, this application includes a judgment device to determine whether the ventilation plate is installed on the housing and whether the dustproof component is installed on the ventilation plate, thus preventing omissions and avoiding disruption to the normal operation of the equipment.

[0025] These and other aspects of this invention will become more readily apparent in the following description of several embodiments. Attached Figure Description

[0026] The various features of this utility model and the relationships between them are further explained below with reference to the accompanying drawings. The drawings are exemplary; some features are not shown to scale, and some drawings may omit conventional features in the field of this application that are not essential to this application, or additional features that are not essential to this application may be shown. The combination of features shown in the drawings is not intended to limit this application. Furthermore, throughout this specification, the same reference numerals refer to the same things. Specific descriptions of the drawings are as follows:

[0027] Figure 1 This is a schematic diagram of the top orthographic projection structure of the testing machine in Example 1;

[0028] Figure 2 for Figure 1 A cross-sectional view of the testing machine along the AA direction;

[0029] Figure 3 for Figure 1 A three-dimensional structural diagram of the test machine after the top is opened;

[0030] Figure 4 A three-dimensional structural diagram showing the installation position of the ventilation panel and the outer casing;

[0031] Figure 5 This is a schematic diagram of the orthographic projection structure of the ventilation plate in two directions in Example 1;

[0032] Figure 6 for Figure 5 A three-dimensional structural diagram of the ventilation panel;

[0033] Figure 7 This is a three-dimensional structural diagram of the ventilation panel when the dustproof component is removed in Example 1;

[0034] Figure 8 This is a schematic diagram of the orthographic projection structure of the seal in two directions in Example 1;

[0035] Figure 9 This is a three-dimensional structural diagram of the test machine after the top is opened in Example 2;

[0036] Figure 10 This is a three-dimensional structural diagram of the ventilation panel when the dustproof component is removed in Example 2.

[0037] Explanation of reference numerals in the attached figures

[0038] 10 Tester; 100 Housing; 111 Base plate; 112 Top plate; 113 Left side plate; 114 Right side plate; 115 Front side plate; 116 Rear side plate; 117 Connecting part; 120 Mounting port; 130 Air outlet; 140 Partition; 150 Fan; 160 First snap-fit ​​joint; 170 Second snap-fit ​​joint; 200 Ventilation plate; 210 Ventilation section; 211 Ventilation hole; 212 Sealing groove; 220 Fixing part; 221 Fixing hole; 230 First snap-fit ​​connector; 240 Second snap-fit ​​connector; 241 First part; 242 Second part; 300 Limit switch; 400 Dustproof component; 500 Sealing component; 600 Pressure plate; 700 Wind speed sensor. Detailed Implementation

[0039] The terms "first, second, third, etc." or similar terms such as module A, module B, module C, etc., used in the specification and claims are only used to distinguish similar objects and do not represent a specific ordering of objects. It is understood that a specific order or sequence may be interchanged where permitted so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0040] The term "comprising" as used in the specification and claims should not be construed as limiting itself to what follows; it does not exclude other elements. Therefore, it should be interpreted as specifying the presence of the mentioned feature, integral, or component, but does not exclude the presence or addition of one or more other features, integrals, or components, or groups thereof. Thus, the statement "equipment comprising means A and B" should not be limited to an equipment consisting solely of components A and B.

[0041] The terms "an embodiment" or "an embodiment" as used in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in at least one embodiment of the present invention. Therefore, the terms "in one embodiment" or "in an embodiment" appearing throughout this specification do not necessarily refer to the same embodiment, but may refer to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics can be combined in any suitable manner, as will be apparent to those skilled in the art from this disclosure.

[0042] The specific structure of the ventilation structure in this application will now be described in detail with reference to the accompanying drawings. The ventilation structure in this application includes a housing 100, a ventilation plate 200, a dustproof component 400, and a determining device. The housing 100 has an installation port 120. The ventilation plate 200 is pluggably connected to the housing 100, covering the installation port 120, and has multiple ventilation holes 211. The dustproof component 400 is detachably connected to the ventilation plate 200, covering the ventilation holes 211. The determining device is mounted on the housing 100 to determine whether the ventilation plate 200 is mounted on the housing 100 and / or whether the dustproof component 400 is mounted on the ventilation plate 200.

[0043] As described above, by plugging and unplugging the ventilation plate 200 to the housing 100, the dustproof component 400 is detachably connected to the ventilation plate 200. This allows for easy removal of the ventilation plate 200 from the housing 100 when the dustproof component 400 needs to be replaced. This facilitates the replacement of the dustproof component 400, reduces replacement difficulty, shortens replacement time, minimizes impact on production, and improves production efficiency. Furthermore, this application also includes a judgment device to determine whether the ventilation plate 200 is installed on the housing 100 and whether the dustproof component 400 is installed on the ventilation plate 200, thereby preventing omissions and avoiding disruption to the normal operation of the equipment.

[0044] In some embodiments, the determining device is a limit switch 300. When the ventilation panel 200 is plugged into and disconnected from the housing 100, the limit switch 300 is closed; when the ventilation panel 200 is not plugged into and disconnected from the housing 100, the limit switch 300 is open. Therefore, by setting the limit switch 300, it can be determined that the ventilation panel 200 has been installed when it is plugged into and disconnected from the housing 100, or that the ventilation panel 200 is not plugged into and disconnected from the housing 100 when the limit switch 300 is open. This avoids omissions and prevents disruption to the normal operation of the equipment.

[0045] In some embodiments, when the limit switch 300 is closed, the test machine 10 is powered on and can be used normally; when the limit switch 300 is open, the test machine 10 is powered off and cannot be used normally.

[0046] In some embodiments, the wind speed sensor 700 may be installed at a corresponding position on the air outlet 130.

[0047] In some embodiments, the housing 100 is provided with a first locking slot 160 and a second locking slot 170, which are respectively located at opposite ends of the mounting opening 120 in the insertion / removal direction. The ventilation plate 200 is provided with a first locking connector 230 and a second locking connector 240, which are respectively located at corresponding positions of the first locking slot 160 and the second locking slot 170, and can be inserted into the first locking slot 160 and the second locking slot 170 in the insertion / removal direction. Thus, by inserting the first locking connector 230 and the second locking connector 240 into the first locking slot 160 and the second locking slot 170 in the insertion / removal direction, the ventilation plate 200 can be simultaneously inserted / removed into the housing 100 while being locked and limited at two positions. This improves the robustness and stability of the ventilation plate 200.

[0048] In some embodiments, the first snap-fit ​​connector 230 is integrally formed with the ventilation plate 200, or the first snap-fit ​​connector 230 is fixed to the ventilation plate 200 by bolts.

[0049] In some embodiments, the housing 100 includes a first surface and a second surface that are bent together, and a mounting opening 120 is disposed on the first surface; the ventilation plate 200 includes a ventilation portion 210 and a fixing portion 220 that are bent together. When the ventilation plate 200 is plugged into the housing 100, the ventilation portion 210 covers the mounting opening 120, and the fixing portion 220 abuts against the second surface on the side facing the plugging / unplugging direction. Thus, by bending the ventilation portion 210 and the fixing portion 220 together, the fixing portion 220 abuts against the second surface during plugging / unplugging, thereby limiting the ventilation plate 200 in the plugging / unplugging direction. Simultaneously, by abutting the fixing portion 220 against the second surface, the fixing portion 220 can be exposed on the outside of the housing 100, thereby facilitating user installation and removal of the ventilation plate 200 from the outside of the housing 100. This facilitates the replacement of the dustproof component 400 and reduces the difficulty of replacement.

[0050] In some embodiments, the ventilation structure further includes fixing screws that pass through the fixing portion 220 and are fixedly connected to the second surface. Therefore, by using fixing screws to fix the ventilation panel 200 to the second surface through the fixing portion 220, the installation and removal of the ventilation panel 200 can be performed from the outside of the housing 100, thus facilitating user installation and removal of the ventilation panel 200 from the outside of the housing 100. This also facilitates the replacement of the dustproof component 400, reducing the difficulty of replacement.

[0051] In some embodiments, the first snap-fit ​​opening 160 is a through hole and is disposed on the second surface; the second snap-fit ​​opening 170 is a notch and is disposed at the edge of the mounting opening 120 away from the second surface; the first snap-fit ​​connector 230 is a protrusion and is disposed on the fixing portion 220, which is adapted to the shape of the first snap-fit ​​opening 160; the second snap-fit ​​connector 240 is a stepped boss and has a first portion 241 and a second portion 242. The first portion 241 is disposed on the side of the ventilation portion 210 facing the first surface, and the second portion 242 is disposed at the end of the first portion 241 away from the ventilation portion 210. The size of the first portion 241 is adapted to the size of the second snap-fit ​​opening 170, and the size of the second portion 242 is larger than the size of the first portion 241.

[0052] It should be noted that the size of the second part 242 is larger than the size of the first part 241. In this embodiment, the size of the second part 242 and the first part 241 refer to their diameters. When the size of the second part 242 is larger than the size of the first part 241, the second snap-fit ​​connector 240 can be securely snapped into the second snap-fit ​​opening 170. In other embodiments, the second part 242 and the first part 241 can also be other shapes, and the corresponding dimensions are set according to the specific shapes. There is no specific limitation on them, and they can be set according to user needs.

[0053] In some embodiments, the second snap-fit ​​connector 240 is a shoulder screw that is threadedly connected to the ventilation section 210.

[0054] In some embodiments, the first card connector 230 may be a square boss, or it may be a circular, oblong, or conical boss, and there is no limitation thereto.

[0055] In some embodiments, the first snap-fit ​​connector 230 and the first snap-fit ​​opening 160 are clearance-fitted, and the gap between the first snap-fit ​​connector 230 and the first snap-fit ​​opening 160 is smaller than the gap between the second part 242 and the second snap-fit ​​opening 170 after the plug-in connection. This improves the stability of the plug-in connection between the ventilation plate 200 and the housing 100.

[0056] In some embodiments, the ventilation plate 200 is provided with a sealing groove 212, which is an annular groove, and the ventilation hole 211 is located on one side of the annulus of the sealing groove 212. The ventilation structure also includes a sealing element 500, which is installed in the sealing groove 212 to press and fix the dustproof component 400 in the sealing groove 212. Thus, by pressing and fixing the dustproof component 400 in the sealing groove 212 by the sealing element 500, the installation and removal of the dustproof component 400 can be easily realized. Therefore, when replacing the dustproof component 400, the difficulty of disassembly and assembly can be reduced and the replacement efficiency can be improved.

[0057] In some embodiments, the seal 500 is annular and adapted to the shape of the sealing groove 212, and the seal 500 presses and fixes the edge of the dustproof member 400 in the sealing groove 212.

[0058] In some embodiments, the seal 500 is made of an elastic material, such as nitrile rubber.

[0059] In some embodiments, the seal 500 is interference-fitted with the sealing groove 212. Therefore, the dustproof component 400 can be pressed and fixed in the sealing groove 212 by the elastic force of the seal 500, making the assembly and disassembly of the dustproof component 400 more convenient.

[0060] In some embodiments, the seal 500 has a circular cross-section and, after installation, is recessed inside the sealing groove 212. Since the size of the seal 500 is larger than the size of the sealing groove 212, a portion of the seal 500 protrudes from the opening of the sealing groove 212. Therefore, the amount of the seal 500 protruding from the sealing groove 212 can be controlled by adjusting the depth of the sealing groove 212, thereby adjusting the compression of the seal 500 when the ventilation plate 200 is plugged into and unplugged onto the housing 100. This allows for a good seal between the ventilation plate 200 and the housing 100 around its perimeter, while also preventing excessive deformation of the seal 500 and extending its service life.

[0061] In some embodiments, the ventilation structure further includes a fan 150, which is mounted on the housing 100 and drives air to enter the housing 100 through the mounting port 120 and then exit through the air outlet 130 on the housing 100. The determining device is a wind speed sensor 700, which detects the wind speed inside the housing 100. When the wind speed sensor 700 detects a wind speed greater than a first threshold, it determines that the dustproof component 400 is not installed on the ventilation plate 200, and / or when the wind speed sensor 700 detects a wind speed less than or equal to the first threshold, it determines that the dustproof component 400 is installed on the ventilation plate 200.

[0062] In some embodiments, when the wind speed sensor 700 detects that the wind speed is less than a second threshold, it determines that the dustproof component 400 needs to be replaced, where the second threshold is less than the first threshold.

[0063] As described above, when the dustproof component 400 is not installed on the ventilation panel 200, air can freely enter the housing 100 through the ventilation hole 211. After the dustproof component 400 is installed on the ventilation panel 200 and covers the ventilation hole 211, the dustproof component 400, while filtering the air, also obstructs the airflow through the ventilation hole 211, thereby reducing the wind speed through the ventilation hole 211 and consequently reducing the wind speed detected by the wind speed sensor 700. Moreover, as dust and other impurities gradually accumulate on the dustproof component 400, the obstruction caused by the dustproof component 400 to the airflow through the ventilation hole 211 gradually increases, further reducing the wind speed detected by the wind speed sensor 700. Therefore, the presence of the dustproof component 400 on the ventilation panel 200 can be determined by whether the wind speed detected by the wind speed sensor 700 exceeds a first threshold, and the need for replacement of the dustproof component 400 can be determined by whether the wind speed detected by the wind speed sensor 700 is below a second threshold. This can improve the understanding of the equipment, prevent users from forgetting to install the dustproof part 400, and remind users to replace the dustproof part 400 in a timely manner to avoid affecting the normal operation of the equipment.

[0064] In some embodiments, when the wind speed sensor 700 detects a wind speed greater than a third threshold, it is determined that the ventilation panel 200 is not installed on the housing 100; when the wind speed sensor 700 detects a wind speed less than or equal to the third threshold, it is determined that the ventilation panel 200 is installed on the housing 100. The third threshold is greater than the first threshold. When the ventilation panel 200 is not installed on the housing 100, the resistance to airflow driven by the fan 150 is minimal because the mounting opening 120 is fully open, resulting in the maximum wind speed inside the housing. Installing the ventilation panel 200 on the housing increases the resistance to airflow driven by the fan 150, thus reducing the wind speed inside the housing 100. Therefore, the wind speed sensor 700 can detect whether the wind speed is greater than the third threshold to determine whether the ventilation panel 200 is installed on the housing 100.

[0065] In some embodiments, the dustproof component 400 is made of materials such as non-woven fabric or polyurethane filter cotton.

[0066] In some embodiments, the ventilation structure further includes a pressure plate 600, which is annular and can be used to press and fix the dustproof component 400 onto the ventilation plate 200 with screws.

[0067] In some embodiments, the ventilation hole 211 may be a circular hole, a square hole, a hexagonal hole, a diamond hole, or a louvered hole, and there is no limitation thereto.

[0068] This application also provides a testing machine 10, including a ventilation structure and electrical components. The ventilation structure can be any of the above-mentioned types, used to cool the electrical components. The specific structure of the ventilation structure will not be described in detail here.

[0069] The specific structure of the test machine 10 will now be described in detail in a specific embodiment, with reference to the accompanying drawings.

[0070] Example 1

[0071] Figure 1 This is a schematic diagram of the top orthographic projection structure of the test machine 10 in Example 1; Figure 2 for Figure 1 A cross-sectional view of the testing machine along the 10A-A direction; Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the testing machine 10 after the top is opened. Figures 1-3As shown, the testing machine 10 in Embodiment 1 includes a housing 100, a ventilation plate 200, a limit switch 300, a dustproof component 400, and electrical components (not shown). The electrical components are installed inside the housing 100. The ventilation plate 200 can be installed on the housing 100 from the outside via a plug-in connection, allowing air to enter the housing 100 through the ventilation plate 200 to cool the electrical components inside. The limit switch 300 is installed on the inner surface of the housing 100, positioned near the ventilation plate 200, and is used to detect whether the ventilation plate 200 is installed on the housing 100 to prevent omissions. The dustproof component 400 is detachably installed on the ventilation plate 200, preventing dust and other debris from entering the housing 100 through the ventilation plate 200.

[0072] like Figures 1-3 As shown, the outer shell 100 is a cuboid shell component, including a bottom plate 111, a top plate 112, a left side plate 113, a right side plate 114, a front side plate 115, and a rear side plate 116. The bottom plate 111, left side plate 113, and right side plate 114 are integrally formed by sheet metal work, and are bent inward at the edges to form connecting portions 117. The top plate 112, front side plate 115, and rear side plate 116 are fixedly connected to the connecting portions 117 at the top, front end, and rear end of the integrally formed bottom plate 111, left side plate 113, and right side plate 114 by screws, thus assembling a cuboid shape.

[0073] The left side panel 113 and right side panel 114 of the outer casing 100 each have a rectangular mounting opening 120 near the front side panel 115 for mounting the ventilation panel 200. The rear side panel 116 of the outer casing 100 has an air outlet 130 for exhausting air from inside the outer casing 100. A partition 140 is also provided inside the outer casing 100, dividing the interior space into front and rear sections. Two fans 150 are mounted on the partition 140, driving airflow within the outer casing 100, allowing air to pass through the ventilation panel 200 into the outer casing 100 and then exit through the air outlet 130. The top panel 112 has a notch corresponding to the ventilation panel 200, exposing the area where the connecting portion 117 of the top edges of the left side panel 113 and right side panel 114 corresponds to the ventilation panel 200, facilitating its installation.

[0074] Figure 4 This is a three-dimensional structural diagram showing the installation positions of the ventilation panel 200 and the outer casing 100. (See diagram below.) Figure 3 , Figure 4As shown, the mounting opening 120 is a rectangular through hole. At corresponding positions near both ends of the upper edge of the connecting portion 117 on the left side plate 113 and the right side plate 114, a first locking opening 160 in the shape of a rectangular through hole is provided. At the lower edge of the mounting opening 120, near both ends, a second locking opening 170 in the shape of a U-shaped notch is provided, and the second locking opening 170 communicates with the mounting opening 120 at the notch position.

[0075] Figure 5 This is a schematic diagram of the orthographic projection structure of the ventilation plate 200 in two directions in Example 1; Figure 6 for Figure 5 A three-dimensional structural diagram of the central ventilation panel 200. (See diagram below.) Figure 5 , Figure 6 As shown, the ventilation plate 200 includes a ventilation section 210 and a fixing section 220. Both the ventilation section 210 and the fixing section 220 are rectangular plate-shaped components. The fixing section 220 is fixed to the upper edge of the ventilation section 210, forming a right-angle bend with it. A rectangular protruding first latching connector 230 is provided on the lower surface of the fixing section 220, corresponding to the first latching opening 160. The first latching connector 230 is integrally formed with the fixing section 220, and its shape and size are adapted to the first latching opening 160, allowing it to be inserted vertically into the first latching opening 160. Two second latching connectors 240 are provided near the lower edge of the surface of the ventilation section 210 facing the outer casing 100, located at positions corresponding to the second latching opening 170. The second snap-fit ​​connector 240 includes a cylindrical first part 241 and a second part 242. The first part 241 is fixedly mounted on the ventilation section 210, and the second part 242 is located at the end of the first part 241 away from the ventilation section 210. The size of the first part 241 is adapted to the size of the second snap-fit ​​opening 170, and the diameter of the second part 242 is larger than that of the first part 241. When the ventilation plate 200 is plugged into and unplugged onto the housing 100, the first part 241 of the second snap-fit ​​connector 240 can be vertically inserted into the second snap-fit ​​opening 170 through the opening, engaging the lower edge of the mounting opening 120 between the second part 242 and the ventilation section 210. The first snap-fit ​​connector 230 and the first snap-fit ​​opening 160 are in clearance fit, and the clearance between the first snap-fit ​​connector 230 and the first snap-fit ​​opening 160 is smaller than the clearance between the second part 242 and the second snap-fit ​​opening 170 after plugging and unplugging. This improves the stability of the plugging and unplugging connection between the ventilation plate 200 and the housing 100.

[0076] like Figure 4 , Figure 6As shown, a fixing hole 221 is provided in the middle of the fixing part 220. After the ventilation plate 200 is plugged into and connected to the housing 100, the fixing part 220 is located at the notch of the top plate 112 and is in contact with the connecting part 117 at the top edge of the left side plate 113 and the right side plate 114. A fixing screw can be used to thread it through the fixing hole 221 from the outside and connect it to the connecting part 117, thereby fixing the ventilation plate 200 to the housing 100.

[0077] like Figure 5 , Figure 6 As shown, the ventilation section 210 is provided with a plurality of circular ventilation holes 211, which are arranged in a square array to form a rectangular area through which air can pass. A recessed square sealing groove 212 is provided around the rectangular area where the ventilation holes 211 are located to accommodate the sealing element 500. The four corners of the groove are rounded to prevent damage from sharp corners after the sealing element 500 is pressed into the sealing groove 212.

[0078] Figure 7 This is a three-dimensional structural diagram of the ventilation panel when the dustproof component is removed in Example 1; Figure 8 This is a schematic diagram of the orthographic projection structure of the seal 500 in two directions in Example 1. Figure 7 , Figure 8 As shown, the seal 500 is shaped to fit the sealing groove 212, forming a rectangular ring. The seal 500 is made of elastic nitrile rubber. The seal 500 is press-fitted into the sealing groove 212 and can be held in place by elastic deformation. This allows for easy installation and removal of the seal 500 without special tools; a common flathead screwdriver is sufficient. After the seal 500 is submerged in the sealing groove 212, a portion of the seal 500 protrudes from the surface of the ventilation section 210. After the ventilation plate 200 is plugged into the housing 100, the gap between the edge of the ventilation section 210 and the housing 100 is sealed by the elastic deformation of the seal 500, allowing air to enter the housing 100 only through the ventilation hole 211. The amount of seal 500 exposed from the sealing groove 212 is controlled by adjusting the depth of the sealing groove 212. This allows the compression of seal 500 to be adjusted when the ventilation plate 200 is plugged into and unplugged onto the housing 100. This ensures that seal 500 has sufficient compression to guarantee the seal between the ventilation section 210 and the housing 100, while reducing damage to seal 500 and improving its service life.

[0079] like Figure 2 , Figure 4As shown, the dustproof component 400 is made of polyurethane filter cotton material that meets the UL94-V0 flame retardant rating, giving it a certain degree of elasticity and strength. The dustproof component 400 is fixedly installed in the ventilation section 210 of the ventilation plate 200, covering the rectangular area where the ventilation hole 211 is located, for filtering dust. Specifically, the dustproof component 400 is a rectangular sheet-like part, with its edge extending to the sealing groove 212. When the sealing component 500 is pressed into the sealing groove 212, it can press and fix the edge of the dustproof component 400 within the sealing groove 212, thereby fixing the dustproof component 400 onto the ventilation plate 200 and ensuring its flatness, preventing wrinkles. When the dustproof component 400 needs to be replaced, simply remove the sealing component 500 from the sealing groove 212 to replace it.

[0080] like Figure 2 As shown, limit switches 300 are also provided on the inner surfaces of the left side plate 113 and the right side plate 114. Limit switches 300 are located at the upper end of the rear edge of the mounting opening 120, near the first locking slot 160. After the first locking connector 230 is inserted into the first locking slot 160, it can compress the spring of the limit switch 300, causing the limit switch 300 to close, thus providing power and allowing the testing machine 10 to confirm that the ventilation plate 200 is installed correctly. After the ventilation plate 200 is removed from the housing 100, the spring of the limit switch 300 is no longer compressed and springs open, causing the limit switch 300 to disconnect. At this time, the testing machine 10 cannot be powered on or started. This method ensures that the ventilation plate 200 is not omitted during assembly and maintenance, protecting the internal electrical components of the testing machine 10.

[0081] like Figure 1 As shown, after the ventilation panel 200 is plugged into the housing 100, the ventilation panel 200 protrudes approximately 4mm from both sides of the housing 100. The specific protrusion can be adjusted according to design requirements and is not specifically limited. Therefore, compared to structures such as louvers, the thickness is much smaller, thus reducing the impact of the ventilation panel 200 on the appearance of the housing 100 and reducing limitations when the testing machine 10 is installed and used in a cabinet.

[0082] Example 2

[0083] Figure 9 This is a three-dimensional structural diagram of the test machine 10 after the top is opened in Example 2; Figure 10 This is a three-dimensional structural diagram of the ventilation panel 200 when the dustproof component 400 is removed in Example 2. Figure 9 , Figure 10As shown, the difference between the testing machine 10 in Embodiment 2 and the testing machine 10 in Embodiment 1 is that, in Embodiment 2, the first snap-fit ​​connector 230 is fixed to the fixing part 220 of the ventilation plate 200 by a square boss fixing screw. The second snap-fit ​​connector 240 is a shoulder screw, which can be threadedly connected to the ventilation part 210 at the corresponding position of the second snap-fit ​​opening 170. The dustproof component 400 is fixed to the ventilation part 210 of the ventilation plate 200 by an annular pressure plate 600. Specifically, the edge of the dustproof component 400 extends to the outer edge of the rectangular area where the ventilation hole 211 is located. Multiple Phillips countersunk screws can pass through the pressure plate 600 and the dustproof component 400 to fix the pressure plate 600 and the dustproof component 400 to the ventilation part 210. After fixing, the rectangular area where the ventilation hole 211 is located is within the annular area of ​​the pressure plate 600, and the edge of the dustproof component 400 is pressed and fixed to the ventilation part 210 by the pressure plate 600, covering the rectangular area where the ventilation hole 211 is located. By using a pressure plate 600 to press and fix the dustproof component 400, the dustproof component 400 can be made of a material with less elasticity, thereby improving the adaptability of the dustproof component 400.

[0084] like Figure 9 As shown, embodiment 2 also includes a wind speed sensor 700. The wind speed sensor 700 is installed on the inner surface of the rear panel 116 of the housing 100, near the air outlet 130. It can detect the wind speed of the air flowing out of the housing 100 through the air outlet 130. Based on the wind speed data, it can determine whether a dustproof component 400 is installed on the ventilation plate 200, or whether the dustproof component 400 needs to be replaced. It should be noted that this embodiment uses the basic detection function of a wind speed sensor; the specific judgment method is a conventional threshold judgment in the art and is not within the scope of protection of this application.

[0085] Specifically, when the dustproof component 400 is not installed on the ventilation panel 200, air can freely enter the housing 100 through the ventilation holes 211. After the dustproof component 400 is installed on the ventilation panel 200 to cover the ventilation holes 211, the dustproof component 400, while filtering the air, also obstructs the airflow through the ventilation holes 211, thereby reducing the wind speed through the ventilation holes 211, and consequently reducing the wind speed detected by the wind speed sensor 700. Moreover, as dust and other impurities gradually accumulate on the dustproof component 400, the obstruction caused by the dustproof component 400 to the airflow through the ventilation holes 211 gradually increases, further reducing the wind speed detected by the wind speed sensor 700. Therefore, when the wind speed sensor 700 detects a wind speed greater than a first threshold, it can be determined that the dustproof component 400 is not installed on the ventilation panel 200, and the testing machine 10 can issue a prompt message to remind the user to install the dustproof component 400. When the wind speed sensor 700 detects a wind speed less than or equal to the first threshold and greater than or equal to the second threshold, it can be determined that the dustproof component 400 is installed on the ventilation panel 200, and the testing machine 10 can issue a prompt message to remind the user that the dustproof component 400 is installed correctly. When the wind speed sensor detects a wind speed less than the second threshold, it can be determined that too much dust has accumulated on the dustproof component 400 and it needs to be replaced, and the testing machine 10 can issue a prompt message to remind the user to replace the dustproof component 400.

[0086] It should be noted that the method for detecting whether the dustproof component 400 is installed is not limited to the method described above. In other embodiments, the installation status of the dustproof component 400 can also be determined by adjusting its thickness and shape. Specifically, the dustproof component 400 can be set to an L-shape that adapts to the ventilation plate 200, so that the dustproof component 400 is bent at the corresponding position of the fixing part 220 and covers the bottom of the fixing part 220. When the first snap-fit ​​connector 230 is fixed to the fixing part 220 by the square boss fixing screw, the dustproof component 400 is clamped in the middle. Therefore, compared with not installing the dustproof component 400, the distance between the end of the first snap-fit ​​connector 230 away from the fixing part 220 and the fixing part 220 will be greater when the dustproof component 400 is installed than when it is not installed. When the ventilation panel 200 is plugged into the mounting port 120, the first locking connector 230 can only compress the spring of the limit switch 300 and close the limit switch 300 when it extends downward to a predetermined position. Therefore, by setting the thickness of the dustproof component 400 to be sufficiently thick, such as 4mm or more, after the dustproof component 400 is installed, the distance between the end of the first locking connector 230 away from the fixing part 220 and the fixing part 220 can be large enough. Thus, after the ventilation panel 200 is installed, the first locking connector 230 can drive the limit switch 300 to close, thereby confirming that the ventilation panel 200 is equipped with the dustproof component 400. If the dustproof component 400 is not installed on the ventilation panel 200, because the distance between the end of the first locking connector 230 away from the fixing part 220 and the fixing part 220 is small, the first locking connector 230 cannot drive the limit switch 300 to close after the ventilation panel 200 is installed, thereby confirming that the ventilation panel 200 is not equipped with the dustproof component 400. Other detection methods are also possible; no specific limitations are made here, and settings can be made according to needs.

[0087] As can be seen from the above embodiments, in this application, the dustproof component 400 is pressed into the U-shaped groove by the elastic deformation of the sealing component 500, making it more convenient and quick to replace the dustproof component 400. The ventilation plate 200 is fastened to the housing 100 (equipment) with only one screw, facilitating the replacement of the entire ventilation plate and simplifying installation. In this application, the sealing component 500 surrounds the mounting holes of the equipment housing, achieving a seal at the gap between the ventilation plate and the equipment, eliminating dead zones in dust prevention. The cooperation between the sealing groove 212 and the sealing component 500 avoids excessive compression of the sealing component 500, extending its service life. The clearance fit between the second snap-fit ​​connector 240 at the bottom and the first snap-fit ​​connector 230 at the top of the ventilation plate 200 and the second snap-fit ​​opening 170 and the first snap-fit ​​opening 160 on the side plate of the equipment enables the positioning and mounting of the ventilation plate 200. Furthermore, the limit switch 300 enables the protection against missing parts of the ventilation plate 200. In addition, the ventilation plate 200 protrudes from the side of the device in this application with a small size, which makes it easy to disassemble and install and provides dust protection. This has little impact on the width dimension of the testing machine 10 and improves the applicability of the testing machine 10.

[0088] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this utility model is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of this utility model. Therefore, although this application has been described in detail through the above embodiments, this utility model is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of this utility model, all of which fall within the protection scope of this utility model.

Claims

1. A vent structure, characterized by, The utility model relates to a dustproof device for air conditioner, including: A shell is provided with a mounting port on it; Ventilation board, the ventilation board is plugged in and pulled out with the shell, covers the mounting port, a plurality of ventilation holes are provided on the ventilation board; Dustproof piece, the dustproof piece is detachably connected with the ventilation board, covers the ventilation hole; Judging device, the judging device is installed on the shell, is used for judging whether the ventilation board is installed on the shell and / or whether the dustproof piece is installed on the ventilation board.

2. The vent structure of claim 1, wherein, The judging device is a travel switch, when the ventilation board is plugged in and pulled out on the shell, push the travel switch to close, when the ventilation board is not plugged in and pulled out on the shell, the travel switch is disconnected.

3. The vent structure of claim 1, wherein, The shell is provided with a first clamping port and a second clamping port, the first clamping port and the second clamping port are located at the corresponding positions of the two ends of the mounting port in the direction of the plug-in connection respectively, the ventilation board is provided with a first clamping head and a second clamping head, the first clamping head and the second clamping head are respectively arranged at the corresponding positions of the first clamping port and the second clamping port, and can be inserted into the first clamping port and the second clamping port in the direction of the plug-in connection.

4. A vent structure according to claim 3, characterised in that The shell includes a first surface and a second surface connected by bending, and the mounting port is arranged on the first surface; the ventilation board includes a ventilation part and a fixed part connected by bending, and when the ventilation board is plugged in and pulled out on the shell, the ventilation part covers the mounting port, and the fixed part is abutted with the second surface towards one side of the plug-in connection direction.

5. A vent structure according to claim 4, wherein Further comprising a fixing screw, the fixing screw is fixedly connected through the fixed part and the second surface.

6. The vent structure of claim 4, wherein, The first clamping port is in the shape of a through hole and is arranged on the second surface; the second clamping port is in the shape of a notch and is arranged at the edge position of the mounting port away from the second surface; the first clamping head is in the shape of a protrusion and is arranged on the fixed part, and is matched with the shape of the first clamping port; the second clamping head is in the shape of a stepped boss and has a first part and a second part, the first part is arranged on the side of the ventilation part towards the first surface, and the second part is arranged at the end of the first part away from the ventilation part, the size of the first part is matched with the size of the second clamping port, and the size of the second part is greater than that of the first part.

7. A vent structure according to any one of claims 1-6, characterized in that The ventilation board is provided with a sealing groove, the sealing groove is an annular groove, and the ventilation hole is located at the position on the side of the annular sealing groove; Further comprising: A sealing member is arranged in the sealing groove to press and fix the dustproof piece in the sealing groove.

8. A vent structure according to any one of claims 1-6, characterized in that Further comprising a fan, the fan is arranged on the shell to drive air entering the shell through the mounting port and then being discharged through an air outlet on the shell; The judging device is a wind speed sensor, the wind speed sensor detects the wind speed in the shell, when the wind speed detected by the wind speed sensor is greater than a first threshold value, it is determined that the dustproof piece is not installed on the ventilation board, and / or when the wind speed detected by the wind speed sensor is less than or equal to the first threshold value, it is determined that the dustproof piece is installed on the ventilation board.

9. A vent structure according to claim 8, characterised in that When the wind speed sensor detects that the wind speed is less than a second threshold value, it is determined that the dustproof member needs to be replaced, the second threshold value being less than the first threshold value.

10. A testing machine characterized by, The ventilation structure according to any one of claims 1 to 9. The ventilation structure according to any one of claims 1 to 9.

Images