Panel, casing assembly, and air handling unit

Abstract

The present application discloses a panel, a casing assembly, and an air handling unit. The panel is mounted on a casing of the air handling unit, and is provided with a plurality of counterbores (111) into which screws are inserted, guide holes (112), and anti-falling portions (120) through which screw threads of the screws pass and applying sliding resistance to the screw threads of the screws; the inner diameter of the counterbores (111) matches the maximum outer diameter of screw heads of the screws, and the minimum hole diameter of the guide holes (112) matches the outer diameter of the screw threads of the screws.

Description

Panels, enclosure components and air handling units

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese patent applications filed on November 6, 2024, with application number 202411579236.5 entitled "Panel, Enclosure Assembly and Air Handling Unit" and application number 202422706673.0 entitled "Panel, Enclosure Assembly and Air Handling Unit", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of air conditioning equipment technology, and in particular to a panel, cabinet assembly and air handling unit. Background Technology

[0004] In related technologies, the panel and housing of air handling units are connected by screws. During assembly on the factory assembly line, workers need to hold a pneumatic screwdriver in one hand and a screw in the other, align the screw with the mounting holes on the panel, and then tighten the screw using the pneumatic screwdriver. This assembly process is cumbersome, inefficient, and the screws are prone to falling out. During after-sales installation or maintenance, workers need to disassemble and reassemble the screws on the panel. However, due to the narrow installation space and complex installation environment of air handling units, and the small size of the screws, they are difficult to retrieve once fallen, requiring reassembly and affecting after-sales efficiency. Summary of the Invention

[0005] This application aims to at least partially solve one of the technical problems existing in the prior art. To this end, this application proposes a panel, a housing assembly having the above-described panel, and an air handling unit.

[0006] According to the first aspect of the present application, a panel is installed in the housing of an air handling unit, comprising:

[0007] A plurality of mounting holes for inserting screws along a first direction, the mounting holes including countersunk holes and guide holes communicating along the first direction, the diameter of the countersunk holes being adapted to the maximum outer diameter of the screw nut, and the minimum diameter of the guide holes being adapted to the outer diameter of the screw threads; and

[0008] The anti-detachment part is configured to allow the thread to pass through in the first direction and to provide sliding resistance to the thread in the opposite direction to the first direction.

[0009] According to some embodiments of this application, the anti-detachment part is disposed in the mounting hole.

[0010] According to some embodiments of this application, the anti-detachment portion is located outside the end face of the end of the mounting hole along the first direction.

[0011] According to some embodiments of this application, the anti-detachment part is configured as a gasket, the gasket having a through hole, the minimum inner circumferential diameter of the through hole being smaller than the outer diameter of the thread.

[0012] According to some embodiments of this application, the gasket is installed between the countersunk hole and the guide hole.

[0013] According to some embodiments of this application, the gasket is installed at the end of the guide hole opposite to the countersunk hole.

[0014] According to some embodiments of this application, the gasket is installed within the guide hole.

[0015] According to some embodiments of this application, the panel includes:

[0016] Plate; and

[0017] A frame is fixedly connected to at least one side of the panel. The mounting hole is formed in the frame. The countersunk hole and the guide hole are spaced apart along the thickness direction of the panel so that the frame forms an insertion groove between the countersunk hole and the guide hole.

[0018] The plate includes a hanging ear protruding towards one side of the frame, the hanging ear includes the pad, and the pad is inserted into the insertion slot.

[0019] According to some embodiments of this application, the plate and the hanging ear are metal parts, and the frame is a plastic part.

[0020] According to some embodiments of this application, the anti-detachment part is configured as a cylindrical body, wherein the minimum diameter of the inner hole of the cylindrical body is smaller than the outer diameter of the thread.

[0021] According to some embodiments of this application, the inner hole of the cylindrical body has a plurality of protrusions arranged at intervals along the circumference of the cylindrical body, and the maximum inscribed circle diameter of the structure formed by the plurality of protrusions is smaller than the outer diameter of the thread.

[0022] According to some embodiments of this application, the cylindrical body is formed throughout the guide hole.

[0023] According to some embodiments of this application, the cylindrical body is formed at one end of the guide hole facing the outer side of the panel.

[0024] According to some embodiments of this application, the cylindrical body is formed at one end of the guide hole facing the inside of the panel.

[0025] According to some embodiments of this application, the guide hole includes a first hole segment and a second hole segment arranged along the thickness direction of the panel, and the cylindrical body is formed between the first hole segment and the second hole segment.

[0026] According to some embodiments of this application, the diameter of the guide hole gradually increases in the direction away from the countersunk hole.

[0027] According to a second aspect embodiment of this application, the housing assembly includes:

[0028] The enclosure includes a peripheral wall, and at least one side of the peripheral wall has a mounting opening; and

[0029] The panel described in the above embodiments is fixedly connected to the peripheral wall by screws and covers the mounting opening.

[0030] An air handling unit according to a third aspect of this application includes the housing assembly described in the above embodiments.

[0031] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0032] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0033] Figure 1 is an exploded view of a housing assembly according to an embodiment of this application;

[0034] Figure 2 is a schematic diagram of the panel structure according to an embodiment of this application;

[0035] Figure 3 is a cross-sectional view of a panel according to an embodiment of this application;

[0036] Figure 4 is an enlarged view of point A in Figure 3;

[0037] Figure 5 is a simplified structural diagram of the ear loop according to an embodiment of this application;

[0038] Figure 6 is a simplified structural diagram of the ear loop according to another embodiment of this application;

[0039] Figure 7 is a simplified structural diagram of the ear loop according to another embodiment of this application;

[0040] Figure 8 is a simplified structural diagram of the ear loop according to another embodiment of this application;

[0041] Figure 9 is an exploded view of a panel according to an embodiment of this application;

[0042] Figure 10 is an enlarged view of point B in Figure 9;

[0043] Figure 11 is a cross-sectional view of the mounting position of the ear according to an embodiment of this application;

[0044] Figure 12 is a cross-sectional view of the mounting position of the ear according to another embodiment of this application;

[0045] Figure 13 is a partial structural diagram of the border according to an embodiment of this application;

[0046] Figure 14 is an enlarged view of point C in Figure 13;

[0047] Figure 15 is a partial structural diagram of the border according to another embodiment of this application;

[0048] Figure 16 is an enlarged view of point D in Figure 15;

[0049] Figure 17 is a cross-sectional view of the frame and screw assembly of another embodiment of this application.

[0050] Reference numerals: Box assembly 1000; Panel 100; Mounting hole 110; Countersunk hole 111; Guide hole 112; First hole section 113; Second hole section 114; Anti-detachment part 120; Through hole 121; Cylindrical body 122; Protrusion 123; Hanging lug 130; Plate 140; First connecting hole 141; Frame 150; Insertion groove 151; Mounting groove 152; Groove 153; Second connecting hole 152; Screw 160; Nut 161; Washer 170; Box 200; Peripheral wall 210; Mounting opening 220. Detailed Implementation

[0051] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0052] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0053] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0054] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0055] Referring to Figure 1, a housing assembly 1000 according to one embodiment of this application includes a panel 100 and a housing 200, which are connected by screws 160. The housing assembly 1000 is used in air handling units, housing heat exchangers, fans, electrical control components, and other structures, thus providing protection. To improve the assembly efficiency of the panel 100 and the housing 200, and to solve the problem of screws 160 being easily lost after disassembly, referring to Figures 2, 3, and 4, the panel 100 according to one embodiment of this application has multiple mounting holes 110 and anti-loosening parts 120. The mounting holes 110 allow screws 160 to be inserted along a first direction. For example, there are four mounting holes 110, with two mounting holes 110 at the upper end and two at the lower end of the panel 100. Of course, the number of mounting holes 110 can also be other, such as one, two, or three, depending on the specific circumstances.

[0056] Referring to Figure 4, the mounting hole 110 includes a countersunk hole 111 and a guide hole 112, which are connected and arranged along a first direction. For example, the first direction is the front-to-back direction in Figure 4, with the countersunk hole 111 located on the front side of the panel 100 and the guide hole 112 located on the rear side of the panel 100. The diameter of the countersunk hole 111 is adapted to the maximum outer diameter of the nut 161 of the screw 160, and the minimum diameter of the guide hole 112 is adapted to the outer diameter of the thread of the screw 160. The anti-loosening portion 120 is configured to allow the thread to pass through along the first direction and provide sliding resistance in a second direction to the thread, which is opposite to the first direction. It should be noted that "adapted" should be understood as: the diameter of the countersunk hole 111 is slightly larger than the maximum outer diameter of the nut 161, and the minimum diameter of the guide hole 112 is slightly larger than the outer diameter of the thread. The sliding resistance is applied to the thread by means of local interference around the thread or interference around the periphery of the thread, thereby restricting the screw 160 from disengaging from the anti-loosening part 120 in the second direction.

[0057] Understandably, by adopting the above solution, during the process of pushing the screw 160 into the mounting hole 110 of the panel 100 in the first direction, the countersunk hole 111 can guide the nut 161, preventing the nut 161 from being misaligned and affecting the alignment of the screw 160. The guide hole 112 guides the thread, preventing the thread from being misaligned and affecting the alignment of the screw 160. Moreover, it eliminates the need for workers to manually straighten the position of the screw 160, thus improving the assembly efficiency of the panel 100 and the housing 200. Since the thread can apply sliding resistance to the thread after passing through the anti-loosening part 120, for example by using a local interference fit around the thread or an interference fit around the periphery of the thread, the screw 160 is prevented from coming out of the mounting hole 110 during the removal of the screw 160. After disassembly, the panel 100 and screw 160 are configured into a secure assembly by the anti-detachment part 120, preventing them from easily falling apart. The screw 160 remains in the mounting hole 110, solving the problem of the screw 160 being easily lost after disassembly. Furthermore, the panel 100 and screw 160 can be assembled before being added to the production line, further improving assembly efficiency. For example, the screw 160 is pre-installed on the panel 100, and the anti-detachment part 120 ensures that the screw 160 is not easily separated from the panel 100. When the panel 100 enters the assembly line for assembly with the housing 200, the steps of finding and aligning the screw 160 are eliminated; the panel 100 is directly snapped onto the housing 200, and then the screw 160 is tightened. Therefore, the assembly steps for the panel 100 and housing 200 are reduced, resulting in higher assembly efficiency.

[0058] Referring to Figure 4, in the embodiment of this application, the diameter of the guide hole 112 gradually increases in the direction away from the countersunk hole 111. It is understood that due to manufacturing precision issues, it is difficult to guarantee that the guide hole 112 and the hole on the housing 200 are perfectly aligned. Therefore, by setting the diameter of the guide hole 112 to gradually increase in the forward-backward direction, the screw 160 has a certain amount of space to swing within the guide hole 112, allowing adjustment of the screw 160's position to align with the hole on the housing 200. This ensures the stability and reliability of the installation of the panel 100 and the housing 200, and improves the yield rate of the housing assembly 1000. The guide hole 112 is designed as a tapered hole with a certain draft angle, facilitating demolding during injection molding.

[0059] Referring to Figures 4 and 5, in the embodiments of this application, the anti-detachment part 120 is disposed in the mounting hole 110, which can more effectively prevent the screw 160 from separating from the mounting hole 110. It should be noted that the mounting hole 110 in this embodiment is a structure that passes through the front end and rear end of the panel 100. For example, the countersunk hole 111 and guide hole 112 in Figure 4, and the groove 153 in Figure 12 are also part of the mounting hole 110. The anti-detachment part 120 being disposed in the mounting hole 110 can be understood as follows: the anti-detachment part 120 is configured as a gasket 170 and inserted into the mounting hole 110; or the anti-detachment part 120 is configured as other limiting structures and fixedly connected to the mounting hole 110. The fixed connection can be integral molding, bonding, etc. In another embodiment, the anti-detachment part 120 can also be located outside the end face of the end of the mounting hole 110 along the first direction. For example, the anti-detachment part 120 is configured as a gasket 170, and a receiving groove for receiving the gasket 170 is provided on the side of the housing 200 facing the panel 100, so that one side of the panel 100 and one side of the housing 200 fit together.

[0060] Referring to Figure 5, in this embodiment of the application, the anti-loosening part 120 is configured as a washer 170, which has a through hole 121. The minimum inner circumferential diameter of the through hole 121 is smaller than the outer diameter of the thread. It should be noted that the screw 160 includes a smooth shank section and a threaded section. One end of the smooth shank section is connected to the nut 161, and the other end is connected to the threaded section. The smooth shank section is a shank section with a smooth, arc-shaped outer wall, and the outer wall of the threaded section has threads. Therefore, after the threaded section of the screw 160 passes through the through hole 121 by spiral rotation, the smooth shank section of the screw 160 engages with the wall of the through hole 121. Since the minimum inner circumferential diameter of the through hole 121 is smaller than the outer diameter of the thread, the threads are blocked when the screw 160 is pulled axially along the through hole 121, making it difficult for the screw 160 to separate from the anti-loosening part 120. This ensures that the screw 160 is always located in the mounting hole 110, reducing the problem of the screw 160 being easily lost after disassembly.

[0061] The through hole 121 can be round, as shown in Figure 5. It can also be square, as shown in Figure 6. Furthermore, it can be a perforated shape, as shown in Figure 7, or an elliptical shape, as shown in Figure 8. Of course, it can also be a cross-shaped hole, a star-shaped hole, etc., with the appropriate shape chosen based on the specific circumstances.

[0062] Referring to Figure 4, in this embodiment of the application, the washer 170 is installed between the countersunk hole 111 and the guide hole 112. It is understood that by placing the washer 170 between the countersunk hole 111 and the guide hole 112, the structure of the washer 170 can be simplified. When removing the screw 160, the washer 170 can restrict the separation of the screw 160 and the panel 100, and the screw 160 remains within the mounting hole 110. Simultaneously, the washer 170 can act as a gasket; the nut abuts against the washer 170, which can improve the stability and reliability of the connection between the panel 100 and the housing 200. It should be noted that the screw 160 can be pre-installed on the washer 170. When assembling the panel 100 and the housing 200, the steps of finding and aligning the screw 160 are eliminated; the panel 100 can be directly snapped onto the housing 200, and then the screw 160 can be tightened using a pneumatic screwdriver. Reduce the number of assembly steps for panel 100 and housing 200 to improve assembly efficiency.

[0063] Referring to FIG11, in another embodiment of this application, the structure of the mounting hole 110 and the gasket 170 of the panel 100 is basically the same as that of the above embodiment, except that the gasket 170 in this embodiment is installed in the guide hole 112. For example, by providing a mounting groove 152 communicating with the guide hole 112 in the frame 150, the mounting groove 152 is located in the middle of the guide hole 112, and the gasket 170 is inserted into the mounting groove 152. By setting the gasket 170 in the guide hole 112, it can be ensured that the screw 160 passes through the through hole 121 of the gasket 170 during the installation of the screw 160, and the stability and reliability of the gasket 170 can be improved, reducing the adverse effects such as deformation and bending of the gasket 170 caused by the removal of the screw 160.

[0064] Referring to FIG12, in another embodiment of this application, the structure of the mounting hole 110 and the gasket 170 of the panel 100 is basically the same as that of the above embodiment. The difference is that the gasket 170 in this embodiment is installed at the end of the guide hole 112 away from the countersunk hole 111, that is, the gasket 170 is located at the rear end of the guide hole 112, and the through hole 121 communicates with the guide hole 112. The rear end of the guide hole 112 is provided with a groove 153 for accommodating the gasket 170, which can effectively prevent the gasket 170 from protruding from the edge 150 of the panel 100, which is beneficial for the installation of the panel 100 and the housing 200. It should be noted that the groove 153 is part of the mounting hole 110, therefore the gasket 170 is disposed within the mounting hole 110. Therefore, the screw 160 is sequentially inserted into the countersunk hole 111, the guide hole 112, and the through hole 121 during installation. By limiting the position of the washer 170, the screw 160 can be prevented from separating directly from the panel 100 during disassembly, thereby reducing the likelihood of the screw 160 being lost after disassembly. Referring to Figures 2 and 4, in the embodiments of this application, the panel 100 includes a plate body 140 and a frame 150. The frame 150 is fixedly connected to at least one side of the plate body 140. For example, there are two frames 150, which are respectively connected to the upper and lower ends of the panel 100. The mounting hole 110 is formed in the frame 150. The countersunk hole 111 and the guide hole 112 are spaced apart along the thickness direction of the panel 100, so that the frame 150 forms an insertion groove 151 between the countersunk hole 111 and the guide hole 112. Referring to Figures 9 and 10, the plate body 140 includes a hanging ear 130 protruding towards the side of the frame 150. The hanging ear 130 includes a washer 170 and a connector. The connector is connected between the frame and the washer 170, and the washer 170 is inserted into the insertion groove 151. The lug 130 and the plate 140 are integrally formed. For example, the plate 140 is a sheet metal part, and the lug 130 is manufactured by stamping. By setting the insertion slot 151, the lug 130 can be easily installed and aligned, thereby ensuring that the screw 160 can be smoothly inserted into the through hole 121, and improving the assembly efficiency of the screw 160.

[0065] In another embodiment of this application, the gasket 170 may be configured as an independent sheet structure and connected to the mounting hole 110 (i.e., the frame 150) by snap-fit, adhesive or other means, or connected to the end face of the end of the mounting hole 110 along the first direction (i.e., the inner end face of the frame 150), which will not be specifically limited here.

[0066] In the embodiments of this application, the plate 140 and the hanging ears 130 are metal parts, while the frame 150 is a plastic part. For example, the metal parts used for the plate 140 and the hanging ears 130 can be aluminum alloy, stainless steel, or other non-ferrous metals. Aluminum alloy has good strength, corrosion resistance, lightweight, and a relatively moderate price, and can also provide good structural support, playing a role in safety protection. Stainless steel has excellent corrosion resistance and strength, and also has high durability and scratch resistance. It should be noted that since some air handling units use refrigerants that are flammable, when a refrigerant leaks, the refrigerant may accumulate to a certain concentration inside the air handling unit and then explode. Therefore, the plate 140 is made of metal, which has higher strength than a plastic solution. When the refrigerant explodes, it can provide a certain degree of protection, effectively preventing the plate 140 from breaking into a large number of fragments during the explosion and causing large-scale injury to users. Of course, for air handling units without explosion-proof requirements, the plate 140 can also be made of plastic, and the appropriate solution should be selected according to the actual situation.

[0067] Since the frame 150 is connected to the edge of the plate 140 and is not the main impact point of the explosion, it can be made of plastic, which can reduce production costs. At the same time, the frame 150 can be injection molded into more complex shapes, forming structures such as countersunk holes 111, guide holes 112 and insertion slots 151, which is beneficial for installing screws 160 and improving the assembly efficiency of the panel 100 and the box 200.

[0068] Besides using a through hole 121 in the lug 130 to restrict the separation of the screw 160 and the panel 100, as shown in Figures 13 and 14, in another embodiment of this application, the anti-detachment part 120 is configured as a cylindrical body 122. The inner hole of the cylindrical body 122 has a plurality of protrusions 123 arranged circumferentially around the cylindrical body 122. The maximum inscribed circle diameter of the structure formed by the plurality of protrusions 123 is smaller than the outer diameter of the screw thread. For example, there are four protrusions 123 arranged circumferentially around the cylindrical body 122. Of course, the number of protrusions 123 can also be other, such as two, three, five, etc. The protrusions 123 extend along the axial direction of the cylindrical body 122, which is the front-back direction in Figure 14. The diameter of the largest inscribed circle of the structure formed by the multiple protrusions 123 refers to the inscribed circle tangent to the end of each protrusion 123 closest to the central axis of the cylindrical body 122 on the projection plane from back to front in Figure 14, and this inscribed circle has the largest diameter. It should be noted that the largest inscribed circle does not need to be tangent to the end of every single protrusion 123, but only to at least a portion of the protrusions 123. Since the minimum inner circumference diameter of the structure formed by the multiple protrusions 123 is smaller than the outer diameter of the screw thread, it can restrict the separation of the screw 160 from the cylindrical body 122, thereby reducing the likelihood of the screw 160 being lost after disassembly.

[0069] Referring to Figures 15 and 16, in another embodiment of this application, the structure of the mounting hole 110 of the panel 100 is basically the same as that of the above embodiment. The difference is that the anti-loosening part 120 in this embodiment is configured as a cylindrical body 122, and the minimum diameter of the inner hole of the cylindrical body 122 is smaller than the outer diameter of the thread. Therefore, it can also restrict the separation of the screw 160 and the cylindrical body 122, thereby reducing the possibility of the screw 160 being easily lost after disassembly.

[0070] In embodiments of this application, the cylindrical body 122 may be formed on the inner wall of the integral guide hole 112. Alternatively, the cylindrical body 122 may be formed at one end of the guide hole 112 facing the outside of the panel 100, for example, the cylindrical body 122 may be formed at the front end of the guide hole 112. Or, the cylindrical body 122 may be formed at one end of the guide hole 112 facing the outside of the panel 100, for example, the cylindrical body 122 may be formed at the rear end of the guide hole 112. Alternatively, referring to FIG17, the guide hole 112 includes a first hole segment 113 and a second hole segment 114 arranged along the thickness direction of the panel 100, and the cylindrical body 122 is formed between the first hole segment 113 and the second hole segment 114. By providing the cylindrical body 122, the separation of the screw 160 and the cylindrical body 122 can be effectively restricted, thereby reducing the likelihood of the screw 160 being easily lost after disassembly.

[0071] One embodiment of the housing assembly 1000 of this application includes the panel 100 and housing 200 of the above embodiments. The housing 200 includes a peripheral wall 210, and at least one side of the peripheral wall 210 is provided with a mounting opening 220. The panel 100 is fixedly connected to the peripheral wall 210 by screws 160 and covers the mounting opening 220. The housing assembly 1000 of this application adopts the panel 100 of the above embodiments. By providing a plurality of countersunk holes 111 for screws 160 to be inserted, guide holes 112, and anti-loosening parts 120 for the screw threads to pass through and to apply sliding resistance to the screw threads, the inner diameter of the countersunk hole 111 is adapted to the maximum outer diameter of the nut 161 of the screw 160, and the minimum diameter of the guide hole 112 is adapted to the outer diameter of the screw thread 160. Therefore, during the process of pushing the screw 160 into the mounting hole 110 of the panel 100, the countersunk hole 111 guides the nut 161, preventing the nut 161 from being misaligned and affecting the alignment of the screw 160. The guide hole 112 guides the thread, preventing the thread from being misaligned and affecting the alignment of the screw 160. Moreover, it eliminates the need for workers to manually adjust the position of the screw 160, improving the assembly efficiency of the panel 100 and the housing 200. Since the thread can apply sliding resistance to the thread after passing through the anti-loosening part 120, for example by using a local interference fit around the thread or an interference fit around the periphery of the thread, the screw 160 is prevented from coming out of the mounting hole 110 during the disassembly process. After disassembly, the panel 100 and the screw 160 are constructed into a difficult-to-disengage assembly structure under the constraint of the anti-loosening part 120. The screw 160 is still located in the mounting hole 110, which solves the problem of the screw 160 being easily lost after disassembly. The panel 100 and the screw 160 can also be assembled and then fed into the production line, further improving the assembly efficiency of the production line. For example, screw 160 is pre-installed on panel 100, and the anti-loosening part 120 ensures that screw 160 is not easily separated from panel 100. When panel 100 enters the assembly line and is assembled with housing 200, the steps of finding and aligning screw 160 are eliminated; panel 100 is directly snapped onto housing 200, and then screw 160 is tightened. Therefore, the assembly steps of panel 100 and housing 200 are reduced, and assembly efficiency is higher.

[0072] Since the housing assembly 1000 adopts all the technical solutions of the panel 100 of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0073] The housing assembly 1000 of the embodiments of this application adopts all the technical solutions of the panel 100 of the above embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0074] One embodiment of this application describes an air handling unit, including the housing assembly 1000 described in the above embodiments. Air handling units, also known as ducted air conditioners, are typically installed in attics or basements. Due to the complex installation environment and limited space, they are usually assembled from multiple modular housings 200. For example, housing 200 includes a heat exchange box and a fan housing. The heat exchange box houses heat exchange components, and the fan housing houses fan components. The heat exchange box and fan housing are constructed as two independent modular housings 200, which are detachably connected. They can be disassembled and transported separately, and then quickly reassembled during installation. This facilitates installation in confined spaces, reducing installation difficulty and improving efficiency. It is understood that due to the limited installation space, the detachable structure of the heat exchange box and fan housing improves maintenance convenience when the air handling unit requires repair or cleaning. It should be noted that air handling units can also adopt an integrated design, where the heat exchange components and fan components are installed in the same enclosure 200. The appropriate solution should be selected based on the specific circumstances.

[0075] The air handling unit of this application adopts the housing assembly 1000 of the above embodiment. The housing assembly 1000 has multiple countersunk holes 111 for screws 160 to be inserted, guide holes 112, and anti-loosening parts 120 for the screw threads to pass through and apply sliding resistance to the screw threads in the panel 100. The inner diameter of the countersunk hole 111 is adapted to the maximum outer diameter of the nut 161 of the screw 160, and the minimum diameter of the guide hole 112 is adapted to the outer diameter of the screw thread 160. Therefore, during the process of pushing the screw 160 into the mounting hole 110 of the panel 100, the countersunk hole 111 can guide the nut 161 to prevent the nut 161 from being misaligned and affecting the alignment of the screw 160, and the guide hole 112 guides the screw thread to prevent the screw thread from being misaligned and affecting the alignment of the screw 160. Moreover, it eliminates the need for workers to manually straighten the position of the screw 160, thereby improving the assembly efficiency of the panel 100 and the housing 200. Because the anti-loosening part 120 can apply sliding resistance to the thread after the thread passes through it, for example by using a local interference fit around the thread or an interference fit around the circumference of the thread, the screw 160 is prevented from coming out of the mounting hole 110 during disassembly. After disassembly, the panel 100 and screw 160 are constructed into a difficult-to-disconnect assembly structure under the constraint of the anti-loosening part 120, with the screw 160 still located in the mounting hole 110, thus solving the problem of the screw 160 being easily lost after disassembly. Furthermore, the panel 100 and screw 160 can be assembled before material handling, further improving the assembly efficiency of the production line. For example, the screw 160 can be pre-installed on the panel 100, and the anti-loosening part 120 ensures that the screw 160 is not easily separated from the panel 100. When the panel 100 enters the assembly line and is assembled with the housing 200, the steps of finding and aligning the screw 160 are eliminated; the panel 100 can be directly fastened onto the housing 200, and then the screw 160 can be tightened. Therefore, the assembly steps for panel 100 and housing 200 are reduced, resulting in higher assembly efficiency.

[0076] Since the air handling unit adopts all the technical solutions of the housing assembly 1000 of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0077] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A panel, mounted on the enclosure of the air handling unit, including: Multiple mounting holes for inserting screws along a first direction, the mounting holes including countersunk holes and guide holes that are connected along the first direction, the diameter of the countersunk holes being adapted to the maximum outer diameter of the screw nut, and the minimum diameter of the guide holes being adapted to the outer diameter of the screw thread; as well as The anti-detachment part is configured to allow the thread to pass through in the first direction and to provide sliding resistance to the thread in the opposite direction to the first direction.

2. The panel according to claim 1, wherein, The anti-detachment part is disposed in the mounting hole; or... The anti-detachment part is located outside the end face of the end of the mounting hole along the first direction.

3. The panel according to claim 2, wherein, The anti-detachment part is configured as a gasket, the gasket having a through hole, the minimum inner circumferential diameter of the through hole being smaller than the outer diameter of the thread.

4. The panel according to claim 3, wherein, The gasket is installed between the countersunk hole and the guide hole; or, The gasket is installed at the end of the guide hole opposite to the countersunk hole; or... The gasket is installed inside the guide hole.

5. The panel according to claim 3 or 4, further comprising: plate body; as well as A frame is fixedly connected to at least one side of the panel. The mounting hole is formed in the frame. The countersunk hole and the guide hole are spaced apart along the thickness direction of the panel so that the frame forms an insertion groove between the countersunk hole and the guide hole. The plate includes a hanging ear protruding towards one side of the frame, the hanging ear includes the pad, and the pad is inserted into the insertion slot.

6. The panel according to claim 5, wherein, The plate and the hanging ears are metal parts, and the frame is a plastic part.

7. The panel according to any one of claims 1 to 6, wherein, The anti-detachment part is configured as a cylindrical body, wherein the minimum diameter of the inner hole of the cylindrical body is smaller than the outer diameter of the thread; or, The inner hole of the cylindrical body has a plurality of protrusions arranged at intervals along the circumference of the cylindrical body, and the maximum inscribed circle diameter of the structure formed by the plurality of protrusions is smaller than the outer diameter of the thread.

8. The panel according to claim 7, wherein, The cylindrical body is formed throughout the guide hole; The cylindrical body is formed at the end of the guide hole facing the outer side of the panel; or, The cylindrical body is formed at the end of the guide hole facing the inside of the panel; or, The guide hole includes a first hole segment and a second hole segment arranged along the thickness direction of the panel, and the cylindrical body is formed between the first hole segment and the second hole segment.

9. The panel according to any one of claims 1 to 8, wherein, The diameter of the guide hole gradually increases in the direction away from the countersunk hole.

10. Enclosure assembly, including: The housing includes a peripheral wall, and at least one side of the peripheral wall is provided with a mounting opening; as well as The panel according to any one of claims 1 to 9, wherein the panel is fixedly connected to the peripheral wall by screws and covers the mounting opening.

11. An air handling unit, comprising the housing assembly of claim 10.

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