A return air grille mounting structure and a ducted air conditioner having the same

Abstract

The application provides a return air grille mounting structure and a ducted air conditioner with the same. The return air grille mounting structure comprises a frame, a return air cover plate and a return air grille. The return air grille is arranged on the frame. The return air cover plate is arranged on the frame and the return air grille. A limiting structure is arranged on the frame. The limiting structure is used for limiting a first side wall of the return air grille and forming a gap between the first side wall of the return air grille and a first side wall of the frame. The gap is used for accommodating a first fixing structure. The first fixing structure is used for fixedly connecting the frame and the return air cover plate. The return air grille is removed by means of a tool. The limiting structure is arranged to prevent the first fixing structure from damaging the return air grille. The elastic deformation part is arranged to improve the mounting efficiency of the return air grille. The application has the advantages of simple structure, convenient assembly and high safety.

Description

Technical Field

[0001] This invention relates to the field of air conditioning, and more specifically, to a return air grille installation structure and a duct air conditioner having the same. Background Technology

[0002] Ductless air conditioners are a type of air conditioner that offers advantages such as saving space, eliminating hard-to-clean corners, and requiring only partial ceiling installation. Due to their recessed installation method, they are more aesthetically pleasing than wall-mounted and cabinet air conditioners, making them popular among users.

[0003] The return air grilles in existing ducted air conditioning units are typically installed on the frame by inserting one side into the mounting groove and snapping the other side onto the frame. This connection method allows the return air grille to be removed without tools, making it prone to accidental detachment during use. This is detrimental to the protection of internal components and can even cause accidental injury to the user in severe cases. If the return air grille is fixedly connected to the frame, its fixing performance is poor because it is usually made of non-metallic material. If a cover plate is installed on the outside of the return air grille for protection, the cover plate needs to be fixedly connected to the frame, and the fastener needs to be inserted into the mounting groove, which can easily damage the return air grille. Summary of the Invention

[0004] The problem solved by this invention is that in the prior art, the return air grille can be removed without tools, and when a cover plate is installed on its outside, the fixing parts of the cover plate and the frame can easily damage the return air grille.

[0005] To address the aforementioned problems, the present invention provides a return air grille installation structure, comprising a frame, a return air cover, and a return air grille. The return air grille is disposed on the frame, and the return air cover covers the frame and the return air grille. A limiting structure is provided on the frame, which limits the first sidewall of the return air grille and creates a gap between the first sidewall of the grille and the first sidewall of the frame. This gap accommodates a first fixing structure, which is used for the fixed connection between the frame and the return air cover.

[0006] In this configuration, the fixed connection between the return air cover and the frame restricts the return air grille between them. Removing the return air grille requires first removing the return air cover, preventing direct removal of the grille without tools. This avoids the possibility of the return air grille accidentally detaching during the operation of the ducted air unit, enhancing its operational safety. Furthermore, the limiting structure creates a gap between the first sidewall of the grille and the first sidewall of the frame, preventing contact between the first fixing structure and the return air grille during installation, effectively solving the problem of the return air grille being damaged by the first fixing structure.

[0007] Furthermore, an inwardly extending first folded edge is provided at the top of the first side wall of the frame. The first folded edge is used to support the return air cover and is fixedly connected to the return air cover. An inwardly extending support platform is also provided on the first side wall of the frame. The support platform is used to support the return air grille. Second side walls of the frame are provided at both ends of the first side wall of the frame. The limiting structure is provided on the first folded edge and / or the support platform and / or the second side wall of the frame.

[0008] The limiting structure can be a limiting flange bent downward on the first flange and / or a limiting plate and / or a limiting post, or a limiting protrusion and / or a limiting platform and / or a limiting post in the middle section of the support platform, or a limiting plate and / or a limiting post fixedly installed on the inner side of the second side wall of the frame and extending into the inner side of the frame. All of the above settings can achieve a good limiting effect, avoid damage to the return air grille by the first fixed structure, and ensure the installation stability of the return air grille and the return air cover.

[0009] Furthermore, the limiting structure includes a limiting flange disposed on the first flange and bent toward the support platform.

[0010] The setting of the upper limit fold of the first fold is simpler than the structure of setting the limit structure on the support platform and / or the second side wall of the frame. It only requires stamping the end away from the first side wall of the frame, which can effectively save production costs.

[0011] Furthermore, a support block is provided within the space enclosed by the limiting fold, the first fold, the first side wall of the frame, and the support platform, and the support block is used to support the limiting fold.

[0012] The outer wall of the duct unit is relatively thin, and the limiting flange is also relatively thin. It is easy to deform when limiting the return air grille, which may cause the snap-fit ​​structure on the other side to come off, causing the return air grille to move and affecting the normal use of the duct unit. The setting of the support block enhances the strength of the limiting flange, making it less prone to deformation during use, effectively limiting the return air grille and ensuring the safe use of the duct unit.

[0013] Furthermore, the frame also includes a third sidewall corresponding to the first sidewall of the frame, a second folded edge is provided at the top of the third sidewall of the frame, and a first connecting hole is provided on the first folded edge and the second folded edge. The first connecting hole on the first folded edge is located between the limiting folded edge and the first sidewall of the frame, and a second connecting hole is correspondingly provided on the return air cover. The first fixing structure fixes the return air cover and the frame together through the first connecting hole and the second connecting hole.

[0014] In this configuration, since the first connecting hole on the first folded edge is located between the limiting folded edge and the first side wall of the frame, the return air grille will not be damaged when the first fixing structure is connected.

[0015] Furthermore, a fixed sidewall is provided between the first sidewall and the third sidewall of the frame, and the fixed sidewall is fixedly connected to the second sidewall of the return air grille through a second fixing structure.

[0016] With the above configuration, the return air grille is positioned between the third side wall of the frame and the limiting folded edge. During installation, the first side wall of the grille is first abutted against the limiting folded edge, and then the second side wall of the grille is fixedly connected to the third side wall of the frame to complete the assembly of the return air grille and the frame, which is simple and convenient.

[0017] Furthermore, the second fixing structure includes a locking hole and a locking post, with the locking post extending into the locking hole to complete the fixed connection between the return air grille and the frame.

[0018] This design ensures the stability of the connection between the return air grille and the frame. In addition, the simple structure of the locking holes and locking posts makes it easy to manufacture and can effectively improve the assembly speed of the product. At the same time, the return air cover plate provides a vertical limit to the return air grille, preventing it from moving after installation. This eliminates the need to consider the connection strength between the return air grille and the frame, simplifying the structural design and achieving a good protective effect.

[0019] Furthermore, the return air grille includes a grille mesh portion and a frame surrounding the grille mesh portion in the circumferential direction. The frame where the second sidewall of the grille is located is referred to as the first frame. An elastic deformation portion is provided on the first frame. The elastic deformation portion is provided corresponding to the second fixing structure. The elastic deformation portion deforms when pressed and is used for the assembly of the second fixing structure.

[0020] With the elastic deformation part, during assembly, simply pressing the elastic deformation part moves the locking post toward the first side wall of the grille. When sufficient displacement is achieved, aligning the locking post with the locking hole and releasing it easily achieves the fixed connection between the frame and the return air grille, greatly improving assembly efficiency and reducing the risk of damage to components during assembly.

[0021] Furthermore, the elastic deformation portion is a deformation hole provided on the first frame.

[0022] The design of the deformation hole facilitates production and processing, and its elastic deformation effect is also good, resulting in good assembly speed and assembly quality.

[0023] The present invention also discloses a duct air conditioner, including the return air grille installation structure as described above.

[0024] The advantages of the aforementioned duct unit and return air grille installation structure compared to existing technologies are the same, and will not be repeated here.

[0025] Compared to existing technologies, this invention, through the design of the return air cover, necessitates the use of tools to remove the return air grille, preventing accidental detachment and improving the safety of the ducted air handling unit. Simultaneously, the limiting structure restricts the first sidewall of the return air grille, maintaining a certain gap between it and the frame when it is installed on the frame, thus preventing damage to the return air grille during the installation of the first fixing structure. Furthermore, the elastic deformation portion allows the first frame to deform under pressure during the installation of the return air grille, achieving a secure fit between the locking post and the locking slot, significantly improving the installation efficiency of the return air grille. This invention features a simple structure and is easy and quick to assemble, enhancing both the assembly efficiency and the safety of the return air grille during ducted air handling unit installation. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of a return air cover plate installed on the outside of the return air grille according to an embodiment of the present invention;

[0027] Figure 2 This is a three-dimensional structural diagram from another angle of the embodiment of the present invention, showing the arrangement of a return air cover plate on the outside of the return air grille.

[0028] Figure 3 This is a schematic diagram of the structure when the return air cover is opened according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the return air grille as described in an embodiment of the present invention when it is installed on the frame;

[0030] Figure 5 This is a schematic diagram of the split structure when the return air grille is installed on the frame, as described in an embodiment of the present invention;

[0031] Figure 6 This is a top view of the return air cover according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the return air grille according to an embodiment of the present invention;

[0033] Figure 8 This is a structural schematic diagram of the return air grille from another angle according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the frame structure described in an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of the frame as described in an embodiment of the present invention from another angle.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-Frame; 11-First sidewall of frame; 111-First folded edge; 1111-First connecting hole; 112-Support platform; 113-Support block; 114-Limiting folded edge; 12-Third sidewall of frame; 121-Second folded edge; 13-Fixed sidewall; 14-Second sidewall of frame; 2-Return air grille; 21-First sidewall of grille; 22-First frame; 23-Grill mesh section; 24-Deformation hole; 25-Second sidewall of grille; 3-Return air cover; 31-Cover mesh section; 32-Second connecting hole; 4-Second fixing structure; 41-Snap hole; 42-Snap post. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only some, not all, of the embodiments of this invention. The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0039] The following describes in detail, with reference to the accompanying drawings, a return air grille installation structure and a duct unit having the same structure, according to an embodiment of the present invention.

[0040] Example 1

[0041] This embodiment provides a return air grille installation structure, such as Figure 1-5As shown, the device includes a frame 1, a return air cover 3, and a return air grille 2. The return air grille 2 is disposed on the frame 1, and the return air cover 3 covers the frame 1 and the return air grille 2. A limiting structure is provided on the frame 1. The limiting structure is used to limit the first side wall 21 of the grille of the return air grille 2, and to form a gap between the first side wall 21 of the grille and the first side wall 11 of the frame 1. The gap is used to accommodate a first fixing structure, which is used for the fixed connection between the frame 1 and the return air cover 3. In this configuration, the fixed connection between the return air cover 3 and the frame 1 restricts the return air grille 2 between them. When removing the return air grille 2, the return air cover 3 must be removed first. The return air grille 2 cannot be directly removed without tools, thus preventing the return air grille 2 from accidentally falling off during the operation of the ducted air unit and enhancing the operational safety of the ducted air unit. In addition, the setting of the limiting structure creates a gap between the first side wall 21 of the grille and the first side wall 11 of the frame, preventing the first fixing structure from contacting the return air grille 2 during installation and effectively solving the problem of the return air grille 2 being damaged by the first fixing structure.

[0042] As an embodiment of the present invention, an inwardly extending first folded edge 111 is provided at the top of the first side wall 11 of the frame. The first folded edge 111 is used to support the return air cover 3 and is fixedly connected to the return air cover 3. An inwardly extending support platform 112 is also provided on the first side wall 11 of the frame. The support platform 112 is used to support the return air grille 2. Second side walls 14 of the frame are provided at both ends of the first side wall 11 of the frame. The limiting structure is provided on the first folded edge 111 and / or the support platform 112 and / or the second side wall 14 of the frame. It should be understood that the limiting structure can be a limiting flange 114 bent downward on the first flange 111 and / or a limiting plate and / or a limiting post, or a limiting protrusion plate and / or a limiting platform and / or a limiting post in the middle section of the support platform 112, or a limiting plate and / or a limiting post fixedly installed on the inner side of the second side wall 14 of the frame and extending into the inner side of the frame 1. All of the above settings can achieve a good limiting effect, avoid damage to the return air grille 2 by the first fixed structure, and ensure the installation stability of the return air grille 2 and the return air cover 3. Preferably, in order to facilitate the installation of the return air grille 2 and the return air cover 3, the distance between the first flange 111 of the frame and the support platform 112 is greater than the thickness of the return air grille 2.

[0043] As one of the preferred embodiments, such as Figure 9As shown, the limiting structure includes a limiting flange 114 disposed on the first flange 111 and bent toward the support platform 112. It should be understood that, at this time, the distance between the top of the limiting flange 114 and the support platform 112 is less than the thickness of the return air grille 2. The distance between the top of the limiting flange 114 and the support platform 112 refers to... Figure 4 When placed, the distance between the lowest point of the limiting flange 114 and the support platform 112 on the vertical line ensures that the limiting flange 114 abuts against the first side wall 21 of the grille during installation of the return air grille 2. Setting the limiting flange 114 on the first flange 111 is simpler than setting a limiting structure on the support platform 112 and / or the second side wall 14 of the frame. Only one end away from the first side wall 11 of the frame needs to be stamped, effectively saving production costs. While stamping can also be used to set a limiting structure on the support platform 112, since the support platform 112 also supports the return air grille 2, stamping can only be done in the middle section of the support platform 112, making the operation more complex. Furthermore, if additional limiting structures, such as limiting posts or independent limiting plates, are set, corresponding fixing structures are required, making the structure more complex, seriously affecting product assembly efficiency, and increasing costs.

[0044] In one preferred embodiment, a support block 113 is provided within the space enclosed by the limiting flange 114, the first flange 111, the first side wall 11 of the frame, and the support platform 112. The support block 113 is used to support the limiting flange 114. In the prior art, the wall of the duct unit's outer shell is relatively thin, and the limiting flange 114 is also relatively thin. It is prone to deformation when limiting the return air grille 2, which may cause the snap-fit ​​structure on the other side to come off, causing the return air grille 2 to move and affecting the normal use of the duct unit. By providing the support block 113, the strength of the limiting flange 114 is enhanced, making it less prone to deformation during use, effectively limiting the return air grille 2, and ensuring the safe use of the duct unit.

[0045] As one example, such as Figure 10As shown, the frame 1 also includes a third side wall 12 corresponding to the first side wall 11 of the frame. A second folded edge 121 is provided at the top of the third side wall 12. A first connecting hole 1111 is provided on the first folded edge 111 and the second folded edge 121. The first connecting hole 1111 on the first folded edge 111 is located between the limiting folded edge 114 and the first side wall 11 of the frame. A second connecting hole 32 is provided on the return air cover 3. The first fixing structure fixes the return air cover 3 and the frame 1 through the first connecting hole 1111 and the second connecting hole 32. In this configuration, since the first connecting hole 1111 on the first folded edge 111 is located between the limiting folded edge 114 and the first side wall 11 of the frame, the return air grille 2 will not be damaged when the first fixing structure is connected. In one embodiment, at least the first connecting hole 1111 is a screw hole, the first fixing structure is a screw, and the screw passes through the second connecting hole 32 and the first connecting hole 1111 in sequence to complete the fixed connection between the return air cover 3 and the frame 1.

[0046] In this embodiment, a fixed sidewall 13 is further provided between the first sidewall 11 and the third sidewall 12 of the frame. The fixed sidewall 13 is fixedly connected to the second sidewall 25 of the return air grille 2 via a second fixing structure 4. With the above arrangement, the return air grille 2 is positioned between the third sidewall 12 and the limiting flange 114. During installation, the first sidewall 21 of the grille is first abutted against the limiting flange 114, and then the second sidewall 25 of the grille is fixedly connected to the third sidewall 12 of the frame to complete the assembly of the return air grille 2 and the frame 1, which is simple and convenient. It should be understood that the fixed sidewall 13 can be configured as follows: Figure 9 , Figure 10 As shown, the frame is fixed by a horizontal plate extending inward from the third side wall 12, or the two ends of the fixed side wall 13 are fixedly connected to the second side wall 14 of the frame.

[0047] Specifically, in this embodiment, the second fixing structure 4 includes a locking hole 41 and a locking post 42. The locking post 42 extends into the locking hole 41 to complete the fixed connection between the return air grille 2 and the frame 1. It should be understood that in this embodiment, the second fixing structure 4 is provided in two or more sets. This arrangement can ensure the connection stability between the return air grille 2 and the frame 1. In addition, the matching structure of the locking hole 41 and the locking post 42 is simple and easy to manufacture, which can effectively improve the assembly speed of the product. At the same time, due to the setting of the return air cover plate 3, the return air grille 2 is vertically limited, making it unable to move after installation. There is no need to consider the connection strength between the return air grille 2 and the frame 1 too much, simplifying the structural design and achieving a good protective effect.

[0048] In a preferred embodiment, the locking hole 41 is disposed on the fixed sidewall 13, and the locking post 42 is disposed on the second sidewall 25 of the grille. Generally, to save costs and reduce product weight, the return air grille 2 is usually made of non-metallic materials, resulting in low structural strength. Therefore, setting the locking hole 41 on the return air grille 2 makes it prone to damage. On the other hand, the return air grille 2 made of non-metallic materials is easy to incorporate deformation structures. By placing the locking post 42 on the return air grille 2 and combining it with the deformation structure, rapid assembly of the locking post 42 and the locking hole 41 can be achieved, further improving the product assembly efficiency.

[0049] Specifically, in this embodiment, the return air grille 2 includes a grille mesh portion 23 and a frame surrounding the grille mesh portion 23 in the circumferential direction. The frame where the second sidewall 25 of the grille is located is referred to as the first frame 22. An elastic deformation portion is provided on the first frame 22. The elastic deformation portion is provided corresponding to the second fixing structure 4. The elastic deformation portion deforms when pressed and is used for the assembly of the second fixing structure 4. In the prior art, when assembling the locking hole 41 and the locking post 42, the assembler needs to apply force to both sides simultaneously, causing the fixed sidewall 13 and the return air grille 2 to deform to insert the locking post 42 into the locking hole 41. This operation may cause the fixed sidewall 13 to deform, making it impossible for the second fixing structure 4 to complete the connection. On the other hand, it may also damage the return air grille 2. With the setting of the elastic deformation part, during assembly, only the elastic deformation part needs to be pressed to move the locking post 42 towards the first sidewall 21 of the grille. When sufficient displacement is achieved, the locking post 42 is aligned with the locking hole 41, and releasing the force easily achieves the fixed connection between the frame 1 and the return air grille 2, greatly improving assembly efficiency and reducing the risk of component damage during assembly.

[0050] Specifically, such as Figure 7 , Figure 8 As shown, the elastic deformation part is a deformation hole 24 provided on the first frame 22. It should be understood that the deformation hole 24 is provided in a one-to-one correspondence with the second fixing structure 4. The deformation hole 24 may be through-hole or not through-hole, or at least one deformation hole 24 may be through-hole or not through-hole. In this embodiment, "through-hole" means that the deformation hole 24 passes through the upper and lower surfaces of the first frame 22, and "not through-hole" means that the deformation hole 24 is a countersunk hole provided on the upper surface and / or lower surface of the first frame 22. The upper surface and lower surface of the first frame 22 refer to... Figure 8 The upper and lower surfaces in the vertical direction are described. The deformable hole 24 is easy to manufacture and has a good elastic deformation effect, which can achieve good assembly speed and assembly quality.

[0051] It should be understood that, such as Figure 6 As shown, a cover plate mesh portion 31 is provided on the return air cover plate 3. The cover plate mesh portion 31 is provided in correspondence with the grille mesh portion 23. Its specific structure is existing technology, and its structural details will not be limited here.

[0052] Example 2

[0053] This embodiment discloses a duct air handling unit, which includes the return air grille installation structure as described in Embodiment 1.

[0054] The duct unit provided in this embodiment has the same advantages over the prior art as the return air grille installation structure described in Embodiment 1, and will not be repeated here.

[0055] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "tail end," "head end," and "center," are only used to explain the relative positional relationships and connection situations between components in a specific state. They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0056] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A return air grille installation structure, characterized in that, The device includes a frame (1), a return air cover (3), and a return air grille (2). The return air grille (2) is disposed on the frame (1), and the return air cover (3) covers the frame (1) and the return air grille (2). A limiting structure is provided on the frame (1). The limiting structure is used to limit the first side wall (21) of the grille of the return air grille (2) and to form a gap between the first side wall (21) of the grille and the first side wall (11) of the frame (1). The gap is used to accommodate a first fixing structure. The first fixing structure is used for the fixed connection between the frame (1) and the return air cover (3). A first folded edge (111) extending inward is provided at the top of the first side wall (11) of the frame. The first folded edge (111) is used to support the return air cover (3) and is fixedly connected to the return air cover (3). An inwardly extending support platform (112) is also provided on the first side wall (11) of the frame. The support platform (112) is used to support the return air grille (2). A second side wall (14) of the frame is provided at both ends of the first side wall (11) of the frame. The limiting structure is provided on the first folded edge (111) and / or the support platform (112) and / or the second side wall (14) of the frame.

2. The return air grille installation structure as described in claim 1, characterized in that, The limiting structure includes a limiting flange (114) disposed on the first flange (111) and bent toward the support platform (112).

3. The return air grille installation structure as described in claim 2, characterized in that, A support block (113) is provided in the space enclosed by the limiting fold (114), the first fold (111), the first side wall of the frame (11), and the support platform (112). The support block (113) is used to support the limiting fold (114).

4. The return air grille installation structure as described in claim 3, characterized in that, The frame (1) also includes a third side wall (12) corresponding to the first side wall (11) of the frame. A second folded edge (121) is provided at the top of the third side wall (12). A first connecting hole (1111) is provided on the first folded edge (111) and the second folded edge (121). The first connecting hole (1111) on the first folded edge (111) is located between the limiting folded edge (114) and the first side wall (11) of the frame. A second connecting hole (32) is provided on the return air cover (3). The first fixing structure fixes the return air cover (3) and the frame (1) through the first connecting hole (1111) and the second connecting hole (32).

5. The return air grille installation structure as described in claim 4, characterized in that, A fixed sidewall (13) is also provided between the first sidewall (11) and the third sidewall (12) of the frame. The fixed sidewall (13) is fixedly connected to the second sidewall (25) of the return air grille (2) through the second fixing structure (4).

6. The return air grille installation structure as described in claim 5, characterized in that, The second fixing structure (4) includes a locking hole (41) and a locking post (42). The locking post (42) extends into the locking hole (41) to complete the fixed connection between the return air grille (2) and the frame (1).

7. The return air grille installation structure as described in claim 5 or 6, characterized in that, The return air grille (2) includes a grille mesh portion (23) and a frame surrounding the grille mesh portion (23) in the circumferential direction. The frame where the second sidewall (25) of the grille is located is referred to as the first frame (22). An elastic deformation portion is provided on the first frame (22). The elastic deformation portion is provided corresponding to the second fixing structure (4). The elastic deformation portion deforms when pressed and is used for the assembly of the second fixing structure (4).

8. The return air grille installation structure as described in claim 7, characterized in that, The elastic deformation part is a deformation hole (24) provided on the first frame (22).

9. A ducted air conditioner, characterized in that, The duct unit includes a return air grille mounting structure as described in any one of claims 1-8.

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